CN102947831B - The system improved for the evaluation of heat exchanger network energy efficiency and life-span - Google Patents

Abstract

The present invention is provided to management/evaluation for the heat exchanger network energy efficiency of industrial plants and the system (30) of improvement and program product (51).The embodiment of system (30) can comprise heat exchanger network analysis and designs a calculating machine (31) and be configured to cause described heat exchange network analysis and design a calculating machine (31) perform heat exchange network analysis and design program product (51) of various operation, and described operation comprises reclaims the operation of the optimal heat exchanger network improvement item sequence of extension between the current heat exchanger network improved project of purpose and the following heat exchanger network improved project meeting final wasted energy recovery purpose meeting current wanted wasted energy for determining.Described heat exchanger network improved project sequence can be configured so that each subsequent project in described heat exchanger network improved project sequence not with any one contradiction in the prior projects in described heat exchanger network improved project sequence.

Description

The system improved for the evaluation of heat exchanger network energy efficiency and life-span

Related application

nullPresent application for patent advocates the " system improved for the evaluation of heat exchanger network energy efficiency and life-span entitled filed in 4 days March in 2011、Program product and method (Systems，Program Product and Methods For HeatExchanger Network Energy Efficiency Assessment and Lifetime Retrofit) " the 13/041st,The priority of No. 057 U.S. patent application case，Described 13/041st,No. 057 U.S. patent application case is the " system of interference with probabilistic heat exchanger network with the optimum topology identified for improvement in future for synthesizing the higher level that looks to the future entitled filed in 5 days October in 2010、Program product and method (Systems，Program Product，And MethodsFor Synthesizing Heat Exchanger Networks That Account For Future Higher Levels ofDisturbances and Uncertainty and Identifying Optimal Topology For Future Retrofit) " the 12/898th,The continuation in part application case of No. 475 U.S. patent application case，Described 12/898th,No. 475 U.S. patent application case advocate the 61/356th of entitled filed in 21 days June in 2010 " for the heat exchanger network life cycle convertibility under likely the combining of technique change and the system synthesis methods and procedures product (Systematic Synthesis Methodand Program Product For Heat Exchanger Network Life-Cycle Switchability and FlexibilityUnder All Possible Combinations of Process Variations) of motility ",Filed in No. 900 U.S. Provisional Patent Application cases and 30 days October in 2009 entitled " for synthesizing unconfinement and constraint heat exchanger network and identifying the system of optimum topology improved for future、Methods and procedures product (System，Method，And ProgramProduct for Synthesizing Non-Constrained and Constrained Heat Exchanger Networks andIdentifying Optimal Topoloy for Future Retrofit) " the 61/256th,The benefit of priority of No. 754 U.S. Provisional Application cases，And the described 12/898th,No. 475 U.S. patent application case are " setting the goal and the system of optimal drive power distribution in energy-recuperation system entitled filed in 1 day March in 2010、Methods and procedures product (System，Method，And Program Product for Targeting and Optimal Driving Force Distribution in EnergyRecovery Systems) " the 12/715th,The continuation in part application case of No. 255 U.S. patent application case，Described 12/715th,No. 255 U.S. patent application case are " setting the goal and the system of optimal drive power distribution in energy-recuperation system entitled filed in 25 days June in 2007、Methods and procedures product (System，Method，And ProgramProduct for Targeting and Optimal Driving Force Distribution in Energy Recovery Systems) " the 11/768th,No. 084 U.S. patent application case (is now United States Patent (USP) 7,698,022) continuation application，Described 11/768th,No. 084 U.S. patent application case advocates the 60/816th of entitled filed in 23 days June in 2006 " setting the goal and the methods and procedures product (Method and Program Product forTargeting and Optimal Driving Force Distribution in Energy Recovery Systems) of optimal drive power distribution in energy-recuperation system ",No. 234 U.S. Provisional Patent Application cases、Filed in 26 days April in 2010 entitled " for synthesize unconfinement and constraint heat exchanger network system、Methods and procedures product (System，Method，And Program Product forSynthesizing Non-Constrained and Constrained Heat Exchanger Networks) " the 12/767th,No. 217 U.S. patent application case、Filed in 26 days April in 2010 entitled " for synthesizing the system of non-thermodynamic restriction heat exchanger network、Methods and procedures product (System，Method，And Program Product forSynthesizing Non-Thermodynamically Constrained Heat Exchanger Networks) " the 12/767th,Entitled " the system of the optimum topology for synthesizing heat exchanger network and identify for improvement in future filed in No. 275 U.S. patent application case and 26 days April in 2010、Methods and procedures product (System，Method，AndProgram Product for Synthesizing Heat Exchanger Networks and Identifying OptimalTopology for Future Retrofit) " the 12/767th,Entitled " the system setting the goal and identifying of the optimised process variable in bound energy recovery system filed in No. 315 U.S. patent application case and 8 days October in 2009、Methods and procedures product (System，Method，And Program Product for Targeting and Identification of OptimalProcess Variables in Constrained Energy Recovery Systems) " the 12/575th,The priority of No. 743 U.S. patent application case and rights and interests；nullAnd the described 11/768th,No. 084 U.S. patent application case is entitled filed in 26 days April in 2010 " for synthesizing heat exchanger network and the identification system for the optimum topology of improvement in future、Methods and procedures product (System，Method，And Program Product for Synthesizing Heat Exchanger Networksand Identifying Optimal Topology for Future Retrofit) " the 12/767th,The continuation in part application case of No. 315 U.S. patent application case，Described 12/767th,No. 315 U.S. patent application case are advocated entitled filed in 30 days October in 2009 " for synthesizing unconfinement and constraint heat exchanger network and identifying the system of the optimum topology improved for future、Methods and procedures product (System，Method，And Program Product for SynthesizingNon-Constrained and Constrained Heat Exchanger Networks and Identifying OptimalTopology for Future Retrofit) " the 61/256th,The priority of No. 754 U.S. Provisional Patent Application cases；nullAnd with on June in 2009 8 filed in the entitled " system that the overall situation for technique public work under varying conditions sets the goal、Program product and correlation technique (System，Program Product，And Related Methods for GlobalTargeting of Process Utilities Under Varying Conditions) " the 12/480th,Filed in No. 415 U.S. patent application case and 4 days March in 2011 entitled " for heat exchanger network energy efficiency evaluation and the life-span improve method (Methods for Heat Exchanger Network Energy Efficiency Assessment and LifetimeRetrofit) " the 13/041st,No. 087 U.S. patent application case is correlated with，The full text of each patent application case is incorporated herein by reference.

Technical field

The present invention relates generally to the field of energy-recuperation system, and specifically, relate to improving, with the evaluation of the energy efficiency of single and multiple public works, the new and existing heat exchanger network design on basis and current and future, system, program product and the method that amendment is relevant.

Background technology

In order to obtain output result or in order to produce required product or compound, many different types of techniques consume multiple vapor level and electric power.(such as) is consumed to the Large scale processes of a large amount of fuel and steam, preferably by the consumption operating, design or being reconfigured to optimization energy with caution of factory with the equipment used.It addition, in some industrial manufacturing process, need at a certain temperature the specific logistics of material stream to be fed to different types of equipment and machine.These material streams may need to be heated or cooled to target temperature from original beginning temperature or supply temperature.This needs again to consume steam and cools down specific logistics to heat specific logistics and consumption water (such as).

The gross energy used by industrial manufacturing process or consume can (such as) by certain material logistics relative to each other place with caution and configuration is optimized to global minima level.There may be (such as) needs the hot logistics of cooling to be positioned to the possibility close to the cold logistics needing heating.The logistics of the logistics or needs interpolation heat with the heat energy (used heat) existed needing removal can be with the energy expenditure being associated with each other to optimize technique.Heat exchanger network (HEN) can be synthesized to provide for utilizing this used heat to provide the medium of heat to those logistics of needs interpolation heat.This heat exchanger network can be very important subsystem in any new factory.

HEN design faces high-caliber operation change during its life-span.These change can (such as) because material condition and the process disturbance of product demand and/or uncertain and be short-term, and can (such as) since it is desired that process more raw material and be long-term, described need ensure comprise HEN facility assembly eliminate weak link to increase its volume of production.Nowadays and since the seventies later stage in last century, another important long term factor is that energy cost rises continuously with the high speed of advancing the speed than plant capacity system equipment cost.This relatively continuous rising of cost of energy has promoted the needs reclaimed the HEN periodically revising facility during the life-span that can reach 30 years or more than 30 years at facility with the HEN wasted energy (quality and quantity) increasing facility.

In this case, HEN Further aim/task is the most enforceable cost-effective HEN design amendment producing and meeting new technology target and new operational constraints thereof.Inventor is it has been recognized that can exist and make existing HEN improve original design with the possible amendment of the many realizing fresh target.It is one or more that described amendment can comprise in the following: technological operation and design condition amendment, existing HEN topology/structural modification, and comprise and improve the design amendment of existing HEN unit and the parameter modification etc. that the heat transfer of heat transfer (U) strengthens.

In theory, optimization can be used to solve this problem, wherein target is to make the technique unit design of existing HEN amendment and factory and the totle drilling cost of the rest of operation amendment deduct realized cost of energy to save and be minimized.Therefore, inventor has recognized that, there is the institute's likely degree of freedom using or using above-identified and to strengthen the system process step of the Waste Heat Recovery of any industrial plants, the Waste Heat Recovery effort in the world will be highly profitable, strengthen the percentage ratio of elimination weak link that the Waste Heat Recovery of any industrial plants can be automatically converted to the energy system of factory.

Inventor can use or use the current efficiency likely combining to improve the HEN of any facility of available degree of freedom now, after 2 years, after 5 years etc. until the system process step of factory's end-of-life and any improvement effort that the relatively early time of not damaging is carried out also will be highly profitable it is also to be recognized that any industrial plants have.In other words, need to enable factory owner with the energy cost of today evaluate and improve its HEN by obtain current cost of energy and save and can do so with the following methods cost-effective in the way of: when policymaker want after 2 years to three years evaluate because another of energy cost rises and to perform another improve with saving cost of energy time, it can not do so with in the case of the action contradiction that carries out in previous improved project.

Hence, it is recognised that need to enable industrial plants have continue to revise its HEN but not because of system facility do not have option or only have much more expensive/actual and/or contradiction improve option can capture the situation of more used heat in its production facility and hindered the system approach of ability, system and program product.

It addition, exist the today recognizing the need for testing the result comprising mathematical programming model or the result of other improved method any in future and its result can be evaluated from the wasted energy angle of the many unit added and recovery and determine whether HEN has and can allow the abstract technique of healthy topology of more improved projects in future.In other words, need to reproduce and there is the new system approach of structure of continuous factory life-span improved capacity, system and program product for Waste Heat Recovery purpose for present improvement and observable following improvement.

The conventional method that HEN improves uses: pinch technology and amendment thereof, network pinch technology and enhancing thereof, or Mathematical Planning technology.The method using the HEN of pinch technology method and amendment thereof to improve is followed by design amendment level by the level that sets the goal especially and forms.Setting the goal in level especially, it is assumed that the overall situation Δ t_min and by it in order to arrange energy object, and be then used by latice draw network.Then check heat exchanger with from supposing that the relative position of " being assumed to fix " folder point that overall situation Δ t_min value produces is to identify that the HE unit of point (position) exchanged heat is pressed from both sides in leap this " imaginary fix ".Design modification stage, heat exchanger and the heater/cooler that is associated thereof relative to imaginary the folder point position fixed the most systematically/manually reorientate so that its place-exchange no longer crossing over the folder point fixed hot imaginaryly.

In the HEN improved method based on heuristic of routine that is independent or that combine mathematical programming model use pinch technology, the reimbursemen cycle (such as, 2 years) of " once improving " project it is initially selected in the case of unexpected/invisible following improved project.It follows that use the overall Δ T_min of the position consistency with technical clamp point determine required energy to be saved from composite curve and load is newly heated or cooled.Existing network is drawn on the figure of referred to as latice, latice highlights the unit crossing over the work of technical clamp point temperature.Designer is then used by its experience and corrects the situation violating technical clamp point temperature, and this depends on these and changes the hypothesis by not changing folder point position.

Because problem/initialized be initially based on heuristic, so it improves solution in the case of unexpected/invisible following improved project.But, use different starting point to would potentially result in diverse network structure and improve solution.Accordingly, because many alternate design with similar performance are possible, so initialize overall situation Δ T_min value to start improved project to be enforceable with so-called " correct ".Those skilled in the art knows, the different value of Δ T_min will produce difference folder point position, and different folder point positions will cause heterogeneous networks structure.Thus, if started with mistake Δ T_min, then wrong structure will be obtained, and evolution heuristic and optimisation technique (NLP) will not result in optimum, because being infeasible or impossible from the basic mobile/change of a structure to another structure.It is the discovery that based on the first law of thermodynamics although this improves solution, but it is not carried out with the system mode of target reaching initially to define, but it is unexpected method (once improving bag).That is, if designer because a kind of reason or another kind of reason (such as, required capital and/or for the time implemented, impact etc. on other technique unit) and whole solution structure can not be accepted, then will have to refuse described bag.This is probably troublesome, because the target defined for area and cost of investment imprecision and the most coarse.

Use the method that the HEN of method based on network pinch improves use some programs with determine in network by the maximum possible Waste Heat Recovery merely with network public work path (such as, by adding more HE cell list areas).Evolvement method is by being minimised as zero extruding carrying out recurrent network by the Δ T_min between the logistics in each technique to technique HE unit repeatedly, to produce the things being referred to as new " assuming that fixing " network pinch not changing its position with technique and/or structural modification.It is then used by the same rule of pinch technology, reorientates the HE unit crossing over the new network pinch exchanged heat fixed imaginaryly.Business software is currently using these methods by the Mathematical Planning technique complementary of the form in LP, NLP and MILP to select Stream match, optimizes the affluent-dividing in basic engineering network, and/or helps to find the minimum cost topological modification to existing network.

In using the network pinch method of mixing of mathematical programming model and network pinch concept, existing network logistics is first forced to use composite curve or mathematical programming model to extrude cold composite curve to position so-called network pinch.Described method is then used by pinch technology rule to find topological modification (such as, re-sequence, introduce new heat exchanger, Fluid branch etc.), it is followed by the employing of the Network Optimization Model of the load/affluent-dividing using NLP technology or staggered with the employing of the Network Optimization Model of the load/affluent-dividing using NLP technology.But, use pinch technology rule with find the topological modification of existing HEN to overcome so-called network pinch imprecision because it is the hypothesis that will not change its position because of the topological modification taked based on network pinch and technical clamp point.As it is assumed that incorrect, so topological modification can arrive to a certain degree having adverse effect each other so that it can negate the probability carrying out following improved project completely.It is to say, use a certain improved project probably due to it becomes impossible to the adverse effect of prior projects etc., so that improved project cannot continue.

For example, if using the pinch technology concept comprising evolution network pinch method to carry out current HEN improve technique, if and then at least one times, improve a difference folder point position (such as) at technique at any future network and occur because of technological parameter and/or structural modification, if and the some position instruction of different folder needs the unit of the minimal amount fewer than the unit of the minimal amount used in previous HEN improved project, then result is probably some wasted during previous HEN improves in the HE unit added.

Therefore, inventor recognizes, facility has following technique by for useful: by means of described technique, if the folder point of improved project changes its position because of current and future network improvement project solutions (comprising the change to technological parameter and structural modification), then this situation will not negatively affect the topology improvement of network.That is, in addition to needing to strengthen current network UA as network improvement project on the horizon and the part of future network improved project, there will be no on Stream match and/or be previously completed or the appreciable impact of the change of minimal amount that the unit completed in future is needed.

Accepting of pinch technology method and amendment thereof is mutual owing to be present between the improvement solution of designer and evolution.This existence of the designer in circle is so that it can perform deep cost estimate, thus accepts on demand or refuse solution aspect.It also provides for notice plant manager to be helped before starting to improve exercise to set the goal the stage about the coarse of advantage carrying out HEN improved project, and its many degree of freedom being suitable for improving solution, described many degree of freedom are typically too expensive so that actually in mathematic programming methods (such as, use MINLP model) in do not consider, especially for industry size issue.

The acceptance of the network pinch method adopted in the business softwares such as such as SPRINT allows users to automatically search for possible improvement action to determine the ability of required topological modification owing to it.It addition, by using mathematical programming model, the software of network pinch method is used to carry out the optimization level of fixed topology for utilizing public work path, to the optimum load distribution of existing unit and affluent-dividing distribution.It uses evolvement method with the some mathematical programming model of use to improve HEN, and uses network pinch concept to guide the search improving solution.But, this use based on heuristic is coarse, and imprecision (the most accurately).

Although as previously mentioned, most of business softwares are currently using Mathematical Planning technology to supplement other method, but simple Mathematical Planning technology is received, especially in industrial community by not good enough.Mathematical Planning technology generally uses MINLP in one-level or uses MILP to be followed by two-stage to use the NLP of superstructure to carry out, and superstructure is embedded with the object function based on cost being made up of relevance of cost to identify improvement solution in " institute likely solution ".Mathematical Planning technology uses Deterministic searching method and heuristic/proximity search method, described heuristic/proximity search method to use (such as) genetic algorithm, TABU search, simulated annealing and mixed method to find the overall solution of issue of improvement.If expection is embedded in problem superstructure exactly, then Mathematical Planning technology considers while can providing " likely revising ".

Following paper mentions these methods above: base of a fruit letter N base of a fruit Joy (Tjaan N.Tjoe) and Bo Duolinhuofo (BodoLinnhoff), " use pinch technology for process modification (Using pinch technology for process retrofit) ", Chemical Engineering (Chemical engineering), page 47 to 60, April (1986)；N A Sangte (N.Asante) and X Zhu X (X.X.Zhu), " the automatic and exchange method (An automated and interactiveapproach for heat exchanger network retrofit) improved for heat exchanger network ", Institution of Chemical Engineers's proceedings (Transactions ofInstitution of Chemical Engineers), volume 75, part a, page 349 to 360 (1997)；Gram (Amy Ciric) and Christo Du Luofuluodesi (Christodoulos Floudas) in Martin Amis, " for improving the mixed-integer nonlinear programming model (A mixed integer non-linear programming model forretrofitting heat exchanger networks) of heat exchanger network ", industry and engineering chemistry study (Industrial & EngineeringChemistry Research), volume 29, page 239 to 251 (1990)；T Gang Desen (T.Gundersen) and L how this (L.Naess), " synthesis (The synthesis of cost optimal heat exchangernetworks) of the optimal heat exchanger network of cost ", computer and Chemical Engineering (Computers and Chemical Engineering), volume 12, page 503 to 530 (1988)；nullKevin's C George Foreman (Kevin C.Furman) and Nicholas v Sa Nidi (Nikolaos v.Sahinidi)，" for critical review and band annotation bibliography (A criticalreview and annotated bibliography for heat exchanger network synthesis in the 20thcentury) of the heat exchanger network synthesis of 20th century "，Industry and engineering chemistry study (Industrial & Engineering Chemistry Research)，Volume 41，Page 2335 to 2370 (2002)；R Smith (R.Smith), M Qiao Busen (M.Jobson) and 1 old (1.Chen), " latest developments (Recent development in the retrofit of heat exchangernetworks) of the improvement of heat exchanger network ", Chemical Engineering proceedings (Chemical Engineering Transactions), volume 18, page 27 to 32 (2009)；E Rahman Rezaei (E.Rezaei) and S Sa Feiyi (S.Shafiei), " improve (Heat exchanger networks retrofit by coupling genetic algorithmwith NLP and ILP methods) by the heat exchanger network of coupling genetic algorithm with NLP and ILP method ", computer and Chemical Engineering (computers and chemical engineering), volume 33, page 1451 to 1459,2009 years；And R Smith (R.Smith), M Qiao Busen (M.Jobson) and 1 old (1.Chen), " latest developments (Recent development in the retrofit of heatexchanger networks) of the improvement of heat exchanger network ", application thermal technology's journey (Applied Thermal Engineering), volume 30, page 2281 to 2289 (2010).

Each in above-described existing method has some significant drawbacks.For example, in most widely used pinch technology method and amendment thereof, described method is nonsystematic and relates to heuristic, heuristic produces quality and depends entirely on the solution-i.e. of the designer's experience applying these heuristics, should use overall situation Δ T_min when determining the position of the folder point supposing optimal overall situation Δ T_min.But, when the value supposing optimal overall situation Δ T_min changes, the position change of folder point, and therefore, which HE unit is crossed over the evaluation of folder point heat of transfer and is also changed, so that being appropriately chosen as key.This is equally applicable relative to the process reform causing identical output.Thering is provided it addition, improve as a packet mode solution, it does not consider progressively to revise and the practicality of following improved project.Use the heat exchanger with large surface area to may result in the network with one or more heat transfers crossing over folder point during improving after a while to reduce Δ T_min.

Therefore, inventor is it has been recognized that the method is not system, and its needs repeatedly, and recognize that the folder point methods using supposition optimal overall situation Δ T_min is initialized as particularly, and therefore, the method can be not used as the standard method of factory's life-span improvement.For example, the design provided by network pinch method by analysis, inventor is it is also recognized that network pinch method also can cause the network with one or more heat transfers crossing over folder point during improving after a while.This is because described method suppose improperly technique HEN topology change will not affect that technical clamp point and only produce laod network folder point chance any topology change will not increase R_max.It practice, by labor, inventor has been found that the two parameter all can change.Therefore, the method is also not available as the standard method of factory's life-span improvement.

Method based on Mathematical Planning also has significant drawback.For example, method based on Mathematical Planning provides seldom or provides hardly scope mutual for user.Although currently utilizing these methods may solve bigger problem compared with before, but current ability being still not up to scale required in many commercial Application.The problem that HEN improves mathematically is considered as NP difficulty.Thus, inventor it has been recognized that comprise likely technological design amendment, HE unit of dissimilar in superstructure and configuration etc. is unrealistic and problem will be made more difficult, difficult and can not solve.

It addition, MINLP model cost objective function needs for the comprehensive data of model solution to be real.But, required information/data is the most not available during the concept phase of improved project, especially in typical dispersion engineering-environment, wherein project cost control depends entirely on tight cost calculation, and tight cost calculation generally (if not always) carries out after improved project basic engineering and performs at different department (at least in most of companies) places.Additionally, with high fidelity suppose be able to implement for the given site plan of facility all possibly improve solution or run before mathematical routine exploitation closely with each relevance of cost (especially when be constantly present perform to specify improve more than one option revised time) will be actual, the most illogical.Thus, inventor it has been recognized that Mathematical Planning technology often will cause comprising the design of the heat exchange crossing over folder point, described design in improving future by hardly possible correction to reclaim extra heat.

Therefore, inventor recognizes, can evaluate existing network closely without one in these methods (pinch technology, network pinch and Mathematical Planning)；Can add the most accessible Waste Heat Recovery and/or need to realize wanted energy expenditure target or its part for solution before the progress of improved project and systematically reproduce the solution can implemented in some stages in the case of will not become obstacle ensureing the solution implemented today (in the stage one) or need and damage and set the goal closely for by the minimal amount of the unit improving solution in the tomorrow of stage two, stage three etc. middle enforcement in the time after a while in future.It is also recognized that today exist method do not use process reform likely combine for find optimal HEN improvement solution, process reform not only comprises HEN, but also comprises the rest of plant design and operating condition.Accordingly, it is understood that need to provide heat exchanger network energy efficiency and the method for improvement, the system and program product for managing industrial plants of features above.

Summary of the invention

In view of foregoing, various embodiments of the present invention advantageously comprise the heat exchanger network energy efficiency for managing industrial plants and the system of improvement, program product and method, it can evaluate existing network closely, for solution the most accessible wasted energy (heat and/or merit) reclaimed before the progress of improved project and/or need to add to realize wanted energy expenditure target or its part and systematically reproduce the solution can implemented in some stages in the case of will not become obstacle ensureing the solution implemented today (in the stage one) or needs breaking-up for will be in the time after a while in future in the stage two, the minimal amount of the unit that the tomorrow implemented in stage three etc. improves solution sets the goal closely.Various embodiments of the present invention also comprise and use the system of some processing steps, program product and method, by means of described processing step, if the folder point of improved project changes its position because of current and future network improvement project solutions (comprising technological parameter and structural modification), then this situation will not negatively affect the topology of network.

Various embodiments of the present invention advantageously provide the user friendly program introducing the system improved for system, program product and the method performing single and multiple public work, the HEN design of the new factory in basis and the energy efficiency of the HEN improved project of old factory that designed by any means or improved is evaluated.Various embodiments of the present invention advantageously provide the new evolution improved for the HEN life-span of any industrial plants or industrial plants cluster and the innovation system of program, program product and the method for introducing, and what its use HEN improvement was revised likely combines to comprise possible technique unit design and operating condition amendment.Advantageously, the application of these programs can reproduce for the list of HEN improved project in present and following enforcement during the life-span of facility, wherein for all following improved project during the whole time span of facility, the improved project of today not with the improved project contradiction of tomorrow and the day after tomorrow etc..

More particularly, heat exchanger network analysis can be comprised in order to manage/to evaluate the example for the heat exchanger network energy efficiency of industrial plants and the embodiment of the system of improvement and design a calculating machine, it has processor and is coupled to processor so that software and data-base recording are stored in memorizer therein, and be stored in belong to heat exchanger network analysis and design a calculating machine or heat exchanger network analysis and the accessible memorizer that designs a calculating machine (volatibility or non-volatile, interiorly or exteriorly) in data base.Data base can comprise many class values of the possible range of the value of many class values of the possible range of the value of each operational attribute of each each defined individually in multiple thermal process logistics and each operational attribute of the respective each defined individually in multiple cold process-streams.These attributes can be including (for example) each in each in the lower border value of the supply temperature (Ts) of each in each in thermal process logistics and cold process-stream and upper boundary values, thermal process logistics and the lower border value of the target temperature (Tt) of each in cold process-stream and upper boundary values, and/or thermal process logistics and the lower border value of the thermal capacity flow rate (FCp) of each in cold process-stream and upper boundary values.Attribute also comprises the capital cost of the various HEN equipment of the industrial plants according to received logistics condition, together with a group or more logistics specific minimum temperature proximity values (Δ T_min_i) between logistics, logistics starting type, Stream match constraint, overall situation public work consumption figures [Qh], [Qc], wherein " [] " represents interval value.Attribute also can comprise describe at least for the interval in the often referred to as Jia Dian district of " folder point " of " minimum select lower temperature boundary and the district of upper temperature boundary " of each folder point control process-stream/stream temperature and/or discrete location, the identification of logistics of control folder point position, link according to Δ T_min_i or the data of the folder point of one or more figures of the gradual change definition folder point position of process conditions, the minimal amount that some position is the HE unit required for network condition, and other attribute is pressed from both sides with each.

System also can comprise the heat exchanger network analysis being stored in heat exchanger network analysis and the memorizer that designs a calculating machine and designs program product and/or have heat exchanger network analysis and the design program product that independent referable uses.According to exemplary configuration, program product provides the system synthesis of the heat exchanger network in order to the heat exchanger network energy efficiency and improvement managing industrial technology or technique cluster for using multiple resource logistics in the case of remembeing following improvement.Program product can be included in by computer (such as, heat exchanger network analysis and design a calculating machine) cause computer to perform the instruction of various operations when performing, described operation comprises the operation of various input data receiving instruction for the current hot transfer organization of the existing heat exchanger network of industrial plants.These data can comprise under a group between the instruction multiple data points of possible range of value of operational attribute of each in multiple process-streams, logistics the specific minimum temperature of logistics close to boundary value and the specific minimum temperature of upper logistics close to boundary value, logistics starting type, Stream match constraint, at least one interval overall situation public work consumption figures, and other.

According to embodiments of the invention, operation also can comprise the current hot transfer organization showing existing heat exchanger network to graphically.Figure show can comprise identify the folder point position temperature line of the folder point for heat exchanger network and instruction more than the folder point position line, the following and heat transfer crossed between corresponding one or more thermal process logistics and one or more the cold process-streams of the folder point position line to be to provide one or more connecting lines identified rapidly of each heat exchanger appropriately and/or irrelevantly crossing over folder point temperature exchange heat in heat exchanger network.Each in one or more than one connecting line can provide the linear figure of the heat exchange crossing over the folder point position temperature line extended between corresponding thermal process logistics-cold process-stream combination to illustrate with the visual identity strengthening this condition.Unique figure represents scope and the visual identity of other process-stream of the value that also can strengthen major control folder point position, discrete folder point position and folder point position.

Operation also can comprise one or more process-streams identifying major control for the folder point position of existing heat exchanger network, and wasted energy is reclaimed one group of one or more thermal process logistics with the highest impact after reducing its corresponding logistics specific minimum temperature proximity values by identification at once.Operation also can comprise to receive provides intended maximum the wanted used heat/wasted energy within the life-span of heat exchanger network defining final used heat/wasted energy recovery purpose to reclaim the data of the instruction of purpose, and determines the optimal heat exchanger network improvement item sequence sequentially identifying that incremental used heat/wasted energy recovery that multiple heat exchanger network improved project is caused by the incremental increase increasing above Capital expenditure of public work cost of energy to allow (such as) improves.

According to exemplary configuration, optimal heat exchanger network improvement item sequence is meeting extension between the current heat exchanger network improved project of wanted used heat/wasted energy recovery purpose and the following heat exchanger network improved project meeting final used heat/wasted energy recovery purpose.It addition, heat exchanger network improved project sequence can be configured so that each subsequent project in heat exchanger network improved project sequence not with any one contradiction in the prior projects in heat exchanger network improved project sequence.

That is, according to exemplary configuration, determine that the operation of optimal heat exchanger network improvement item sequence can comprise corresponding the increasing of the Capital expenditure increasing above and increasing energy efficiency based on public work cost and set up and the continuum of each corresponding previously multiple order improvement plans that improvement plan is not conflicted in sequence.The continuum of multiple order improvement plans extended between current improvement plan can describe used heat/wasted energy recover energy efficiency current wanted grade and with the end in the service life of facility at or near used heat/wasted energy of joining of time correlation recover energy anticipated the wanted grade of efficiency.

Determine that the operation of optimal heat exchanger network improvement item sequence can also or alternatively comprise the multiple expections determined for corresponding multiple heat exchanger network Curve guide impeller change and be incremented by the continuum that folder point position is moved, the most multiple may be incremented by the incremental reduction moved with the one or more of logistics specific minimum temperature proximity values being applied in multiple thermal process logistics folder point position and be associated.Continuum extends between the folder point position being associated with the heat exchanger network Curve guide impeller meeting heat exchanger network Curve guide impeller and wanted satisfied used heat/wasted energy recovery purpose that wanted used heat/wasted energy reclaims purpose, purpose is reclaimed compared to wanted used heat/wasted energy, wanted used heat/wasted energy reclaims purpose needs larger amount of used heat/wasted energy to reclaim, and the wherein corresponding each in multiple heat exchanger network Curve guide impeller provides progressive larger amount of used heat/wasted energy to reclaim.

Determine that the operation of optimal heat exchanger network improvement item sequence can also or alternatively comprise and determine that offer changes associated plurality of expection and is incremented by the folder point location drawing of the description in order that folder point position is moved with corresponding multiple heat exchanger network Curve guide impeller.The plurality of incremental folder point position is moved and is generally produced by the incremental reduction of the one or more of logistics specific minimum temperature proximity values being applied in multiple thermal process logistics.Folder point position is moved and can be extended between the folder point position that the heat exchanger network Curve guide impeller reclaiming purpose with the heat exchanger network Curve guide impeller meeting wanted used heat/wasted energy recovery purpose and satisfied wanted used heat/wasted energy is associated, purpose is reclaimed compared to wanted used heat/wasted energy, final wanted energy regenerating purpose needs larger amount of used heat/wasted energy to reclaim, and each in wherein moving with the corresponding associated plurality of incremental folder point position of heat exchanger network Curve guide impeller provides progressive larger amount of used heat/wasted energy to reclaim.Folder point the location drawing provide sequentially identify the heat exchanger network improved project sequence of multiple heat exchanger network improved project to define optimal heat exchanger network improvement item sequence, the most each subsequent thermal exchanger network improvement project be configured in case with any prior projects contradiction in heat exchanger network improved project sequence.

Determine that the operation of optimal heat exchanger network improvement item sequence can also or alternatively comprise the minimum temperature proximity values data of the upper and lower bound receiving one group of logistics specific minimum temperature proximity values of instruction.The upper limit of logistics specific minimum temperature proximity values is generally assigned the value that can reach according to the current structure of existing heat exchanger network.The lower limit of logistics specific minimum temperature proximity values is generally assigned the lower bound being associated with by the last improved project carried out at the future date at the end of being used for the service life of heat exchanger network of facility and sets, the following heat exchanger network improved project of described last improved project definition.It addition, lower bound is set as such as 2 °F, the numerals such as 5 °F, or following progressive a certain theoretical minimum value based on HE monotechnics.Operation also can comprise the technical clamp point range interval determining the technical clamp point position range identifying all expection combinations revising (such as, causing owing to condition changes) for process conditions and heat exchanger network design in response to minimum temperature proximity values data.

According to exemplary configuration, operation identifies before can be additionally included in the expection heat exchanger network design that structure meets wanted used heat/useless recoverable correspondence and controls one or more with meet in multiple process-streams that one or more folder point positions that used heat/useless recoverable current heat exchanger network design to be increased is associated are moved, and identifies that pressing from both sides a position with one or more moves each in one or more logistics specific turning point temperature being associated.These features can be advantageous particularly, positioned optimal folder point position because it provides to designer and identifies process conditions and/or the ability of characteristic of realization optimal folder point position before expanding the notable resource of design technology in the case of remembeing following improvement.

According to exemplary configuration, operation also can comprise and the one or more of logistics specific minimum temperature proximity values that be applied in multiple thermal process logistics is incrementally decreased moves to define the multiple heat exchanger network Curve guide impeller for heat exchanger network design problem whereby with the multiple incremental folder point positions identifying the multiple different folder point positions of definition and change.Operation also can comprise the minimal amount of the required heat exchanger unit that each independent person in the multiple heat exchanger network Curve guide impeller change determined and have corresponding different folder point positions is associated, and determines the optimal folder point position of the minimal amount providing heat exchanger unit.

According to exemplary configuration, operation also can comprise and the one or more of logistics specific minimum temperature proximity values that be applied in multiple thermal process logistics is incrementally decreased moves with the multiple incremental folder point positions identifying the multiple different folder point positions of definition, and determines that giving process conditions for one group provides maximum used heat/useless recoverable optimal folder point position.

According to exemplary configuration, operation also can comprise the minimal amount of the required heat exchanger unit determined in the design of a certain heat exchanger network, determine and use the heat exchanger unit fewer than the minimal amount of required heat exchanger unit on used heat/useless recoverable impact, determine according to the erroneous matching between one or more in the one or more and multiple cold process-stream in multiple thermal process logistics that a certain heat exchanger network designs used heat/useless recoverable impact, and/or determine that heat exchanger unit has the not optimal heat exchanger unit surface area designed for a certain heat exchanger network to used heat/useless recoverable impact relative to capital cost.Operate also can comprise and determine that needing to add a certain heat exchanger network to designs to be issued to, in existing process conditions and logistics specific minimum temperature proximity values, the minimal amount that current used heat/wasted energy reclaims the heat exchanger unit of ability.

According to exemplary configuration, operation also can comprise by be identified as control for a certain heat exchanger network design folder point position one or more process-streams process conditions amendment move folder point a position, and by be identified as control folder point position one or more process-streams minimum temperature proximity values amendment move folder point a position.

Advantageously, embodiments of the invention also comprise heat exchanger network energy efficiency and the method for improvement managing the industrial plants for having multiple process-stream.The various examples of method comprise to implement operations described above and the step of operation described in the following detailed description.For example, embodiment according to method, method can comprise the steps of one or more process-streams identifying major control for the folder point position of existing heat exchanger network, determine and give, for one group, the optimal folder point position that process conditions provide the minimal amount of maximum used heat/wasted energy recovery and/or required heat exchanger unit, and determine the optimal heat exchanger network improvement item sequence of extension between the current heat exchanger network improved project and the following heat exchanger network improved project meeting final used heat/wasted energy recovery purpose of wanted satisfied used heat/wasted energy recovery purpose.

Various steps also can comprise and show current and proposed hot transfer organization to graphically according to new and unique graphical method.Step also can comprise from energy viewpoint, the viewpoint of the minimal amount of unit to be added or two viewpoints selection optimal folder point positions, and calculates the minimal amount of HE unit.Step also comprises employing traveling technology { at once to find/to calculate tight new Further aim after the reduction of Δ T_min_i} system and/or process conditions change, cross over folder point and public work violator is marked, finding erroneous matching and correct described erroneous matching by the new public work path of generation, it comprises elimination because using the HE unit fewer than the minimal amount of HE unit and because the energy lost in the topology of erroneous matching generation.

Various embodiments of the present invention advantageously represent (such as) in the method representing existing HEN, set the goal the stage from the test of " energy efficiency " viewpoint and the uniqueness of analyzing the method for existing HEN and last several times in the system searching improving solution in energy expenditure and number of unit, improve solution system searching on the implementation for evolve and in thinking for innovation, because of the novel concept of its service Factory life-span improved capacity the past improve and following improve between do not have contradiction and will not impracticable because of physics (wanted structural modification can not be carried out) or economical impracticable (more actions to be improved become the most expensive so that the situation that can not adjust) and lose the chance that continues more improved projects.Various embodiments of the present invention additionally advantageously solve the improvement of single and multiple public work HEN for wasted energy mass recovery, and can use process reform likely combine for finding optimal heat exchanger network improvement solution, described combination not only comprises HEN, but also comprises the rest of plant design and operating condition.

Various embodiments of the present invention additionally advantageously work to identify final purpose folder point/finally improve terminus and can describe to be taken to perform the road sign of improved project, described improved project causes: optimal wasted energy reclaims and the energy system assembly of factory eliminates weak link, the optimal minimum of new unit adds, and both.These embodiments enable a designer to determine the number of unit required for reaching wanted energy object and decision optimal tradeoff between energy saving and the number (capital cost expenditure) of unit to be added of execution before being engaged in improved project solution.

As mentioned previously, in the method (technique and network) being currently based on folder point, folder point position will occur immediately upon change after performing amendment.Therefore, sequential update is by that be likely to become conflict and cause common solution.Therefore, embodiments of the invention provide for likely pressing from both sides the solution a little using interval to comprise method.Various embodiments of the present invention additionally advantageously promote to control hot logistics and/or the identification of cold logistics of folder point position.Process conditions and any of HEN topology are successfully revised, before determining any amendment, knows that described logistics can be considered priori.Orientation problem technical clamp point diagram is also useful to the picture completing technical clamp point interval, especially when there is not technical clamp point (as in threshold application) and only having public work folder point and as in the situation (wherein having non-process folder point) of CDU.The logistics at once on energy regenerating after reducing its Δ T_min_i with the highest impact can position and/or re-position at by again mating on public work path.

nullAccording to various embodiments of the present invention，Advantageously，HEN can be carried out under likely the combining of technological parameter and structural modification to improve，Such as (e.g.) " setting the goal and the system of optimal drive power distribution in energy-recuperation system entitled filed in 25 days June in 2007、Methods and procedures product (System，Method and Program Product forTargeting and Optimal Driving Force Distribution in Energy Recovery Systems) " the 11/768th,No. 084 U.S. patent application case (is now United States Patent (USP) 7,698,022)、Entitled " the system of interference with probabilistic heat exchanger network with the optimum topology identified for improvement in future for synthesizing the higher level that looks to the future filed in 5 days October in 2010、Program product and method (Systems，Program Product，And Methods ForSynthesizing Heat Exchanger Networks That Account For Future Higher Levels ofDisturbances and Uncertainty and Identifying Optimal Topology For Future Retrofit) " the 12/898th,Entitled " the system of the optimum topology for synthesizing heat exchanger network and identify for improvement in future filed in No. 475 U.S. patent application case and 26 days April in 2010、Methods and procedures product (System，Method，AndProgram Product for Synthesizing Heat Exchanger Networks and Identifying OptimalTopology for Future Retrofit) " the 12/767th,Described in No. 315 U.S. patent application case.

Various embodiments of the present invention provide be better than in general for the conventional method improved for factory life-span heat exchanger and especially for understand advantage for pinch technology and network pinch method, although pinch technology and network pinch method provide a certain ability of management result to designer, but it has significant drawback.For example, use Mathematical Planning to extrude network in network pinch method and do not produce the entirety of the next step about the problem required for find solution and see clearly, and do not provide guiding when meeting with Threshold and without the problem in public work path.In the solution space used is not included in.These methods may use the coarse cost estimate of today and make this estimate to control the final situation that the improvement of factory's life-span needs before solution details unknown.Find solution be order and do not provide the progressively action used not with collide with one another or solution just advances to obtain the optimal guarantee improved towards correct direction in the long run.These methods the most do not provide the improvement remembeing more improvement.These methods the most not energy (being caused by erroneous matching practice) to loss in topology sets the goal, sets the goal the energy (being caused by the unit that can not utilize required minimal amount) of loss in number of unit, systematically capacity decisions (capital with energy balance) to loss in surface area set the goal.These methods the most do not use traveling or other technical optimization { Δ T_min_i} setting value, Optimizing Technical and HEN network improvement action simultaneously, identify that to be included in the technical clamp point likely combine lower institute's likely technical clamp point that technique and HEN condition change interval, or identification or appointment press from both sides point control logistics to instruct the search to the solution that can stand time test.These methods can not reproduce the amendment one by one to the correct direction for life-span embodiment.Various embodiments of the present invention advantageously provide these features.These methods the most do not provide the open-and-shut expression of existing HEN or utilize the number finding the degree of freedom improving solution as described in this article.

Degree of freedom is including (for example) heat exchanger unit condition (overall thermal jump condition (U), comprise heat transfer enhancings, dirt minimizing etc.), { Δ T_min_i} setting (surface area), Fluid branch ratio, number of unit, Stream match, technological design and operating condition, and the combination of all above-mentioned each.It should be noted that, operation pressure, stream flow speed, all hot logistics to be cooled and the supply temperature of cold logistics to be heated and target temperature, circulating reflux/intercooler and the existence of intermediate heater that technological design and operating condition comprise unit or shortage and flow rate thereof and supply temperature and target temperature, the post reflux ratio post reflux ratio of change (can generally utilize in HEN improved project /) are, and the tower tray in catalyst type, activity and selectivity, tower tray/packaging efficiency, multi-level unit and the number of level, separated network sequence etc..

As conventional method, be based not only on folder point and network pinch method can not simultaneously or sequentially use likely degree of freedom, or use be likely at once provided as system after some in degree of freedom technique, the hypothesis extended to after will be regarded as the things of myopia is provided, or the improved project that looks to the future, these methods cannot guarantee that the action of reservation or today in next improved project be will not become the obstacle of future-action by the action taked today.These can be provided to ensure without various embodiments of the present invention limited thereto.It is therefore contemplated that these embodiments will become to be highly profitable optimized for energy efficiency group, because it is more used heat/wasted energy recovery opens up new way.

Accompanying drawing explanation

In order to the features and advantages of the present invention and other content that will be apparent from can be understood in more detail, can be by the more specific description making the present invention being briefly summarized above with reference to the embodiments of the invention illustrated in the accompanying drawings, accompanying drawing forms the part of this specification.Various embodiments of the present invention are only described however, it should be noted that graphic and be therefore not construed as limiting the scope of the present invention, because it also can comprise other effective embodiment.

Fig. 1 be according to embodiments of the invention for management for heat exchanger network (HEN) energy efficiency of industrial plants and the schematic diagram of the General System framework of the system of improvement；

Fig. 2 be explanation according to an embodiment of the invention for management for the HEN energy efficiency of industrial plants and the schematic frame flow chart of the step of improvement；

Fig. 3 is the schematic block diagram that explanation dissects for the energy loss of existing single public work HEN according to an embodiment of the invention；

Fig. 4 is the schematic diagram of existing HEN；

Fig. 5 is the figured schematic diagram of the HEN that Fig. 4 according to an embodiment of the invention is described；

If one group of schematic diagram of the stem portion of the systems technology that Fig. 6 to 9 is explanation evaluation according to an embodiment of the invention and laboratory test；

If Figure 10 is that explanation is according to an embodiment of the invention for seeing clearly the schematic diagram of the stem portion of the systems technology producing and setting the goal；

Figure 11 to 14 is one group of schematic diagram of explanation the most different types of folder point leap problem；

Figure 15 to 24 is that explanation is according to an embodiment of the invention for finding one group of schematic diagram of the systems technology improving solution；

Figure 25 is that the figure of the data entry page of the network described in Figure 15 according to embodiments of the invention is described；

The schematic diagram of the existing HEN of the software application of pinch technology is used according to Figure 26；

Figure 27 is the figured schematic diagram explanation life-span according to an embodiment of the invention for performing on the HEN of Figure 26 improving the result of the systems technology of solution example；

The schematic diagram of the existing HEN of the software application of pinch technology is used according to Figure 28；

Figure 29 is the figured schematic diagram of the HEN that Figure 28 according to an embodiment of the invention is described；

Figure 30 is the figured schematic diagram of the improvement that the HEN according to the software application using pinch technology is described；

Figure 31 is the explanation figured schematic diagram improving solution testing according to an embodiment of the invention to the HEN of Figure 30；

The schematic diagram of the existing HEN of the software application of pinch technology is used according to Figure 32；

Figure 33 to 41 is that one group of schematic diagram that the HEN performed on the HEN of Figure 32 according to an embodiment of the invention improves example is described；

The schematic diagram of the existing HEN of the software application of Mathematical Planning technology is used according to Figure 42；

Figure 43 to 50 is that one group of schematic diagram that the comparison HEN performed on the HEN of Figure 42 according to an embodiment of the invention improves example is described；

The schematic diagram of the existing HEN of the software application of Mathematical Planning technology is used according to Figure 51；

Figure 52 to 55 is that one group of schematic diagram that the comparison HEN performed on the HEN of Figure 51 according to an embodiment of the invention improves example is described；

The schematic diagram of the existing HEN of the software application of Mathematical Planning technology is used according to Figure 56；

Figure 57 to 66 is that one group of schematic diagram that the comparison HEN performed on the HEN of Figure 56 according to an embodiment of the invention improves example is described；

Figure 67 is the schematic block diagram that explanation dissects for the energy loss of existing multiple public works HEN according to an embodiment of the invention；

Figure 68 is the schematic diagram that the most multiple public works HEN are described；

Figure 69 is that the figure of the data entry page of the network described in Figure 68 according to embodiments of the invention is described；

Figure 70 is that the figure of the energy quality target after the improvement of use parent and branch system is described；

Figure 71 is that the figure of the energy quality after the improvement of use parent and branch system/merit loss target is described；And

Figure 72 is that the figure at the HEN improved further to consider the Figure 68 after multiple public work grades according to embodiments of the invention is described.

Detailed description of the invention

The present invention, accompanying drawing explanation embodiments of the invention now be will be described more fully hereinafter with reference to the accompanying drawings.But, the present invention can embody in many different forms and should not be construed as limited by illustrated embodiment described herein.And be to provide these embodiments so that the present invention is by for detailed and complete, and the scope of the present invention will be passed on all sidedly to those skilled in the art.Same numbers refers to similar elements all the time.Like in prime symbols (if use) instruction alternate embodiment.

In order to obtain output result or in order to produce required product or compound, many different types of techniques consume multiple vapor level and electricity.(such as) is consumed to the Large scale processes of a large amount of steam, optimize steam and power system the most in the conceived case.Improving for the recoverable heat exchanger network that gives up under likely the combining of technique change can be the very important subsystem in any new factory.But, the improved project increasing the today produced of Energy harvesting cost may conflict with the improved project of tomorrow, thus cause the improved project of the today not performed originally by the Capital expenditure of unwanted excess.

Various embodiments of the present invention provide the various new and/or option of improvement improved for heat exchanger network that can sequentially and/or simultaneously carry out, and described option does not cause this conflict.These options can including (for example) use traveling technology and with best of breed guide Δ T_min_i} optimize to accelerate this search, such as in the United States Patent (USP) 7 of entitled " setting the goal and the system of optimal drive power distribution, methods and procedures product (System; Method; and ProgramProduct for Targeting and Optimal Driving Force Distribution in Energy Recovery Systems) in energy-recuperation system ", discussed in 698,022.These options can also or alternatively comprise and re-sequence；nullTechnological parameter is revised，Such as change stream supply temperature and/or target temperature、Add new logistics、Change operation pressure，And structural modification can be comprised，Such as utilize existing public work path、By inserting heat exchanger (HE) unit and/or by the new coupling of identification execution to use cold logistics and the new public work path of hot Fluid branch generation to increase number of unit at identical match、Change/correct coupling to change public work path，It is included in entitled filed in 26 days April in 2010 " for synthesizing unconfinement and the system of constraint heat exchanger network、Methods and procedures product (System，Method，And Program Product forSynthesizing Non-Constrained and Constrained Heat Exchanger Networks) " the 12/767th,The option discussed in No. 217 U.S. patent application case.Structural modification can also or alternatively comprise to be removed the cooler more than technical clamp point, the heater below technical clamp point and crosses over any process heat exchangers unit of technical clamp point.nullFor example，NLP may be used to optimize branch and Q distribution after the topology of fixing HEN minimizes (it makes the gross area at given HEN topology minimize) with the outer HEN area of the total value being used in HEN design under change and uncertainty，Such as (e.g.) in " the system of interference with probabilistic heat exchanger network with the optimum topology identified for improvement in future for synthesizing the higher level that looks to the future entitled filed in 5 days October in 2010、Program product and method (Systems，ProgramProduct，And Methods For Synthesizing Heat Exchanger Networks That Account For FutureHigher Levels of Disturbances and Uncertainty and Identifying Optimal Topology For FutureRetrofit) " the 12/898th,Described in No. 475 U.S. patent application case.It should be noted that HEN motility can change because of (such as) environment temperature, dirt, catalyst deactivation, heat, quality and momentum transfer ratio in exchanger is uncertain, reactive kinetics parameters uncertain (activation energy and frequency factor), equilibrium constant are uncertain, the degradation of equipment thermodynamic efficiency etc. and different little change/interference and uncertainty are provided.

Various options according to an exemplary embodiment of the invention are described below.Specifically, Fig. 1 explanation is given up the system 30 of recoverable heat exchanger network energy efficiency and improvement in order to manage being used under likely the combining of the technique change giving alms (indivedual industry are given alms or industrial plants cluster) for industry.System 30 can comprise: heat exchanger network analysis and design a calculating machine 31, and it has processor 33, is coupled to processor 33 so that software and data-base recording to be stored in memorizer 35 therein；With user interface 37, it can comprise the pictorial displays 39 for showing graph image, and the known user input apparatus 41 handling software and data-base recording in order to provide user to access of those skilled in the art.It should be noted that computer 31 can form in personal computer or in servicing form of other configuration known to the server of multiple user interfaces 37 or server zone or those skilled in the art.Therefore, user interface 37 may be coupled directly to computer 31 or is connected to computer 31, as known to those skilled in the art by network 38.

System 30 also can comprise data base 43, and data base 43 is stored in heat exchanger network analysis and 31 (interiorly or exteriorly) memorizer 35 that designs a calculating machine and has many class values of possible range of value of each operational attribute of each each defined individually in multiple thermal process logistics and the many class values of the possible range of the value of each operational attribute of each each defined individually in multiple cold process-streams.nullThese attributes can be including (for example) the lower border value of the supply temperature (Ts) of each in each in thermal process logistics and cold process-stream and upper boundary values、The lower border value of the thermal capacity flow rate (FCp) of each in the lower border value of the target temperature (Tt) of each in thermal process logistics and each in cold process-stream and upper boundary values and/or thermal process logistics and each in cold process-stream and upper boundary values、The capital cost of the various HEN equipment of industrial plants it is used for according to received logistics condition，Together with a group or more logistics specific minimum temperature proximity values (Δ T_min_i) between logistics、Logistics starting type、Stream match retrains、Overall situation public work consumption figures [Qh]、[Qc] (wherein " [] " represents interval value)，And interval and/or the discrete location in the often referred to as Jia Dian district of " folder point " in " the lower temperature boundary of minimum selection and the district of upper temperature boundary " that be at least used for each folder point control process-stream/stream temperature are described、Control the identification of the logistics of folder point position、Link according to Δ T_min_i or the data of the folder point of one or more figures of the gradual change definition folder point position of process conditions，Minimal amount with the HE unit required for the network condition of each folder point position，And other person.

System 30 also can comprise heat exchanger network analysis and design program product 51, its be stored in heat exchanger network analysis and design a calculating machine 31 memorizer 35 in and be adapted to provide for comprising and analyze and the system process of various unique stage of design, described various unique stage provide the innovative solution method with the amendment step that decoupling is evolved.Analysis and the design phase according to system process comprises " evaluation stage ", it provides setting up and promoting the evaluation of existing HEN by until producing laboratory testing analysis and reporting of the existing HEN basic network design conditions that expection improves, and the report of described laboratory testing analysis represents by the figure of existing HEN according to new and unique method and assist and provide from " energy efficiency " viewpoint and test and analysis.Analyzing and the design phase also comprises " seeing clearly and the target selection stage ", it provides and consumption is set the goal by implementation and energy selects and determines the minimal amount meeting the HE unit required for energy object.Analysis and design phase also comprise " finding the solution stage ", and it provides the system process for finding the improvement solution evolved on the implementation and innovate in thinking.System process serves the novel concept of factory's life-span improved capacity, and the past improve and following improve between there is no contradiction and will not become the most expensive because of impracticable or more (following) improvement action thus the situation that can not adjust and lose the chance that continues more improved projects.It also solves the improvement of single and multiple public work HEN for wasted energy mass recovery.Analyze and the design phase also can comprise promote Mathematical Planning technology utilize to assess " evaluation stage " of HEN solution, and promote " the specifying the stage " of the exploitation of actual implementation strategy and enforcement.

It should be noted that, heat exchanger network analysis and design program product 51 can in microcode, program, routine and offer organize the form of symbolic language of specific settings of ordered operation more, described many group ordered operations control working and instructing it to operate of hardware, as known to persons skilled in the art road and understanding.Should also be noted that, according to embodiments of the invention, heat exchanger network analysis and design program product 51 need not all reside in volatile memory, but can be selectively loaded according to various methods on demand, as known to persons skilled in the art road and understanding.

Fig. 2 provides and heat exchanger network analysis according to an embodiment of the invention and the design operation of program product 51 and/or the high level flow chart of method step being associated is described.As frame 111 is shown, step/operation comprises reception input data, input data can comprise the data of the possible range of the value of the operational attribute of instruction each in multiple process-streams of existing HEN (see (such as) Fig. 4) to be modified, one group of specific minimum temperature of logistics between logistics is close to boundary value Δ T_min_i, logistics starting type, Stream match retrains, one or more interval overall situations public work consumption figures [Qh], [Qc], the labelling of existing HEN design structure, and for producing under a group between the logistics of improvement figure the specific minimum temperature of logistics close to boundary value and the specific minimum temperature of upper logistics close to boundary value { Δ T_min_i [L:U] }.It should be noted that Fig. 4 illustrates to use the conventional expression of the HEN problem of the network pinch method provided by example.

As shown in frame 113, step/operation can comprise according to drawing the existing HEN shown in Fig. 4 such as (e.g.) the new graphical representation method of the system being illustrated in Figure 5.It should be noted that the network under existence conditions represents the energy lost in the topology of the heating public work of extra 5MW and the cooling public work of 5MW.At current process with { under the conditions of Δ T_min_i}, there is not the heat crossing technique source range from technique place section (part that folder point is above), in technique source range (part that folder point is following), do not use hot public work, and in the section of technique place, see the cooling activity of mistake.Current network design uses 6 HE unit.Thermal process logistics H3, H2 and H4 are serviced by cooler to technique unit service, H1 and H4 by technique, and cold process-stream C1 is serviced by heater.

As shown in frame 115, step/operation comprises the system evaluation that execution comprises referred to as the things of " laboratory test results ".Method program for evaluating/testing generally comprises: current { the technical clamp point under Δ T_min_i} of definition, definition process folder point interval, " implying " folder point is identified when needed in applying at Threshold, calculate each in the case of the minimal amount of unit, identify optimal folder point position from number of unit and energy expenditure viewpoint, and draw physical technology folder point.The minimum of Fig. 6 to 9 explanation each in hot logistics H1 to the H4 is reduced to zero one by one ({ Δ T_min_i}=0.0) close to temperature value.{ combination of Δ T_min_i}=0.0 provides seeing clearly and in order to obtain the thing that the most possible target should be done about the process-stream on energy regenerating with the highest impact.The network condition of amendment can make comparisons with real network to identify the energy (energy of loss in the number of unit) of loss in the energy (energy of loss in coupling) putting into practice loss in the topology produced because of erroneous matching and the topology produced because of the use HE unit fewer than the minimal amount of HE unit, with the energy of loss in area/{ Δ T_min_i} selection (capital-energy balance), and the energy of loss in process conditions.It should be noted that Fig. 3 to illustrate for the energy loss of existing single public work HEN to dissect.

In topology, costing bio disturbance can give designer reality { " extruding coupling " impact of the HEN heat recovery efficiency under Δ T_min_i}, and the position of the network pinch for all these couplings extruding coupling on being used.New { Δ T_min_i} repeats this and calculates to reproduce and be simultaneously used for each new { energy object of loss in the topology under Δ T_min_i} of all extruding logistics for each.Described data provide in order to segregation table area effect, number of unit impact, process conditions, in order to determine erroneous matching impact and in order to identify folder point interval an input, as described below.

As shown in frame 117,119,121,123 and 125, step/operation comprises for carrying out the step/operation set the goal with target selection.At frame 117, receiving the target selection from policymaker and input, it comprises the Suo Yao factory life-span Further aim of policymaker.At frame 119,121 and 123, formulate the extra minimal amount target of wanted energy object, unit, and/or a combination of both.At frame 125, produce and check possible case.Consumption is set the goal by execution, energy selects and the various analysis seen clearly, described analysis comprises the minimal amount determining the HE unit required for the satisfied energy object provided by policymaker, and definition reproduces factory's life-span improvement institute syllabus target to policymaker and most preferably presss from both sides a position.

By application Δ T_min_i traveling technology (such as, in United States Patent (USP) 7,698, traveling technology described in 022), following information can be produced: optimal Δ T_min_i value, corresponding energy object, folder point is interval, control a folder point logistics for position, the interval and hot logistics of minimal amount of unit { minimal amount of the unit of needs at each combination of Δ T_min_i} value, and the logistics on Waste Heat Recovery with the highest impact that may readily identify.

In the example shown in Fig. 10, by application traveling technology, determine following information: folder point interval is equal to [100:145] °F.The H3 definition folder point upper bound, position and C1 definition folder point position lower bound.H3 positive control folder point position is until its Δ T_min_H3=5 °F, and below that value (such as, Δ T_min_H3=45 °F), C1 controls folder point position, and at overall situation Δ T_min=6 °F, problem becomes threshold value.Minimal amount interval=[5:9] of unit.For using the example of instance parameter, using and press from both sides a rule (using formula according to an embodiment of the invention), the minimal amount of the unit needed more than folder point is 3 and is 4 pressing from both sides a minimal amount for following unit.Thus, a total number unit fewer than the minimal amount of required unit of the HE unit used, thus cause there is the energy lost in the number of the unit used.

As frame 127 is shown, step/operation can comprise application system program to find the solution that services present and following HEN improved project and to solve solution details, and its (such as) performs to next step to find to ultimately result in institute's syllabus target route by progressively amendment in the case of remembeing following improved project.It addition, as shown in frame 129 and 131, step/operation can comprise for Q and branch and/or additional areas optimization application Non-Linear Programming (NPL).The details of various step is described in greater detail below.

The situation that Figure 11 illustrates to cross over folder point without logistics and extends.New coupling will be needed to reclaim useless cooling load (Q_c_waste) pressing from both sides below the above useless heating load (Q_h_waste) of point and folder point.In this case, Q_lost_heating is equal to Q_lost_cooling.More than folder point this gives up " heating load " and folder point is following give up " cooling down load " is equal to Q_lost=FCph* (Ts-Tt), the temperature shown in figure whereby is that unit is specific, wherein Tt ＞=tp and tp ＞=tt (use cold yardstick temperature as with reference to and existing Δ T_min_i}).

In this case, at least one new HE unit is needed.If the Q_lost* $/MMBtu saved in heating public work and cooling public work does not proves that it is correct for adding any new unit, then stop this segment process.No, technique should not then or change into using existing HE unit for the hot logistics load that coupling folder point the is above new cold logistics load above with folder point or a cold Fluid branch.If driving force allows to insert, then insert and mate with the new of existing cold logistics, otherwise re-sequence the unit in this cold logistics to allow to insert.

In the case of FCph ＜=FCpc_new, cold logistics and/or cold division should be positioned at public work path/heater path and cold Fluid branch ts (being positioned at folder point or more than folder point) is less than or equal to hot logistics Tt.If meeting these conditions, then only need a new coupling more than folder point, otherwise more than one new coupling will be needed more than folder point.If the Q_lost* $/MMBtu in heating public work and cooling public work saves does not proves that it is correct for adding more than one unit, then stop this segment process.

According to exemplary configuration, if Tt=tp, then any cold logistics for the folder above candidate matches of point is positioned at be considered as on public work heater path enforceable.If ∑ FCph is also greater than ∑ FCpc, then change the public work path at the folder point more than the folder point of existing network or the driving force distributed on heater load so that new the wanted temperature (tp) overcoming this to retrain is moved/be trimmed in folder point position by the Δ T_min_i of amendment process conditions (stream inlet temperature) and/or folder point position control logistics.If ∑ FCph is less than ∑ FCpc, wherein public work path pressing from both sides at the folder point that point is following at existing network, then perform step same as above.At this after amendment, the type of inspection problem at hand is to determine if still for the most having become the problem crossing over folder exchanged heat without crossing over the problem of folder point exchanged heat or its.

Otherwise, it would be desirable to again the mating of the above cold logistics of folder point and hot logistics has preferable public work path or heater load, or produces new public work path or heater load.If this is wanted cold Stream match condition impossible, then the hot logistics load FCph that division folder point is above, and repeat procedure above.

Below folder point, the cooling load loss being also equal to Q_lost=FCph* (Ts-Tt) should be inserted into the hot logistics being positioned at public work path/cooler path, and applies, by changing the role between folder point hot logistics used above and cold logistics, the same program used in pressing from both sides the situation that point is above.It should be noted that and can re-use existing HE unit in the case of being suitable for (about space, pipeline, topology etc.).In this case, both are equal with in terms of candidate user in the heat load of existing HE unit in it mates.The UA of new coupling should define the distribution of existing HE unit together with other process constraint.

Figure 12 illustrates that the situation pressing from both sides point and extend is crossed in a logistics (cold logistics).New coupling will be needed to reclaim useless cooling load (Q_c_waste) pressing from both sides below the above useless heating load (Q_h_waste) of point and folder point.In the case of Q_lost_heating is equal to Q_lost_cooling, more than folder point this gives up " heating load " and folder point is following give up " cooling down load " is equal to Q_lost_heating=FCph* (Ts-Tt)-FCpc* (tt-tp).If the Q_lost* $/MMBtu saved in heating public work and cooling public work does not proves that it is correct for adding two new unit, then stop this segment process.Otherwise, use existing unit for the hot logistics load that coupling folder point the is above new cold logistics load above with folder point or a cold Fluid branch, and if driving force allow to insert, then insert and newly the mating of the existing cold logistics being positioned at folder point.Otherwise, the unit in this cold logistics is re-sequenced to allow to insert.In the case of FCph ＜=FCpc_new, cold logistics and/or cold division should be positioned at public work path/heater path, are positioned at cold Fluid branch ts and FCph_branch at folder point equal to Q_lost/ (Ts-Tt).

According to exemplary configuration, it is desirable to for any cold logistics by the candidate matches above for folder point, it should be positioned on public work heater path.If ∑ FCph is more than ∑ FCpc, wherein public work path is at the folder above folder point of point of existing network, then change driving force distributed to move/to be trimmed to, by a folder point position, new the wanted temperature (tp) overcoming this to retrain by the Δ T_min_i of amendment process conditions (stream inlet temperature) and/or folder point position control logistics.If ∑ FCph is less than ∑ FCpc, wherein public work path pressing from both sides at the folder point that point is following at existing network, then perform step same as above.At this after amendment, from the point of view of the type of inspection problem at hand (such as) its be the most still the problem of " folder point is crossed in single logistics " type, or its problem the most becoming " two logistics are crossed over and pressed from both sides point " type.

Otherwise, it would be desirable to again the mating of the above cold logistics of folder point and hot logistics has preferable public work path or heater load, or produces new public work path or heater load.If this is wanted cold Stream match condition impossible, then the hot logistics load FCph that division folder point is above, and repeat procedure above.

Below folder point, cooling load loss equal to Q_lost_cooling=FCpc* (tp-ts) should be connected to be positioned at public work path/cooler path and the hot logistics at both places of folder point, or with from the hot logistics being positioned at folder hot Fluid branch/branch and again with public work route matching.It should be noted that and can re-use existing HE unit in the case of being suitable for (about space, pipeline, topology etc.).

Figure 13 illustrates that the situation pressing from both sides point and extend is crossed in a logistics (such as, hot logistics).New coupling will be needed to reclaim useless cooling load (Q_c_waste) and Q_lost_heating pressing from both sides below the above useless heating load (Q_h_waste) of point and folder point equal to Q_lost_cooling.In this case, more than folder point this gives up " heating load " and folder point is following give up " cooling down load " is equal to Q_lost=FCph* (Ts-Tp), the temperature wherein shown in figure is that unit is specific, and wherein tp ＞=tt (use cold yardstick temperature as with reference to and existing Δ T_min_i}).

If the Q_lost* $/MMBtu saved in heating public work and cooling public work does not proves that it is correct for adding two new unit, then stop this segment process.No, use existing HE unit to load the new cold logistics above with folder point for the hot logistics that coupling folder point is above and load or cold Fluid branch.Specifically, if driving force permission is inserted, then insert and mate with the new of the existing cold logistics being positioned at folder point, the unit in this cold logistics is otherwise re-sequenced to allow insertion, FCph ＜=FCpc_new whereby.Cold logistics and/or cold division should be positioned at public work path/heater path, and cold Fluid branch ts should be positioned at folder point.

According to exemplary configuration, it is desirable to for any cold logistics by the candidate matches above for folder point, it should be positioned on public work heater path.If ∑ FCph is more than ∑ FCpc, wherein public work path is at the folder above folder point of point of existing network, then change driving force distributed to move/to be trimmed to, by a folder point position, new the wanted temperature (tp) overcoming this to retrain by the Δ T_min_i of amendment process conditions (stream inlet temperature) and/or folder point position control logistics.If ∑ FCph is less than ∑ FCpc, wherein public work path pressing from both sides at the folder point that point is following at existing network, then repeat step same as above.At this after amendment, the type of inspection problem at hand, (such as) its be the most still that problem is crossed in single hot logistics, or it has become two logistics leap problems the most.

Otherwise, it would be desirable to again the mating of the above cold logistics of folder point and hot logistics has preferable public work path/heater load, or produces new public work path/heater load.If this is wanted cold Stream match condition impossible, then the hot logistics load FCph that division folder point is above, and repeat procedure above.

Below folder point, the cooling load loss being also equal to Q_lost=FCph* (Ts-Tp) should be inserted into the hot logistics being positioned at public work path/cooler path, and by applying, folder point role used above, the same program used in the above situation of folder point between exchanged heat logistics and cold logistics.It should be noted that and can re-use existing HE unit in the case of being suitable for (about space, pipeline, topology etc.).

Figure 14 illustrates that the situation pressing from both sides point and extend is crossed in two logistics (such as, hot logistics and cold logistics).New coupling will be needed to reclaim useless cooling load (Q_c_waste) pressing from both sides below the above useless heating load (Q_h_waste) of point and folder point.Press from both sides point above this useless " heating load " (Q_lost_heating) and press from both sides both following useless " cooling loads " (Q_lost_cooling) equal to Q_lost=FCph* (Ts-tp)-FCpc (tt-tp).

If the Q_lost* $/MMBtu saved in heating public work and cooling public work does not proves that it is correct for adding 3 new unit, then stop this segment process.Otherwise, according to exemplary configuration, it is desirable to for any cold logistics by the candidate matches above for folder point, it should be positioned on public work heater path.If at the folder point that the folder point of existing network is above, ∑ FCph is more than ∑ FCpc, then change driving force distributed to move/to be trimmed to, by folder point position, new the wanted temperature (tp) overcoming this to retrain by the Δ T_min_i of amendment process conditions (stream inlet temperature) and/or folder point position control logistics.If at the folder point that the folder point of existing network is following, ∑ FCph is less than ∑ FCpc, then repeat such as program above.At this after amendment, the type of inspection problem at hand is to verify that it is the most still that problem is crossed in two logistics.

Otherwise, it may be desired to again the mating of the above cold logistics of folder point and hot logistics has preferable public work path/heater load or produce new public work path/heater load.If this is wanted cold Stream match condition impossible, then the hot logistics load FCph that division folder point is above, and repeat procedure above.Reduce Q_lost_heating={FCph* (the Ts-tp)-FCpc (tt-tp) from existing HE unit } load and divide hot logistics to obtain new branch FCph=Q_lost/Ts-tp.This branch and the cold logistics pressing from both sides more than point is mated so that this cold logistics is positioned at public work path/heater path at the folder point of FCph_branch ＜=FCpc.It should be noted that and can re-use existing HE unit in the case of being suitable for (about space, pipeline, topology etc.).

The rule mentioned in previous occasion is suitable for.Below folder point, by dividing cold stream portions to reproduce FCp_branch, be also equal to Q_lost_cooling={FCpc* (tp-ts)-FCph (tp-Tt) } cooling load loss with folder point at be positioned at the hot Stream match at public work path/cooler path, wherein FCpc_branch=Q_lost_cooling/ (tp-ts).

Figure 15 to 24 explanation is used for implementing the example of the systems technology in " finding solution " stage.As Figure 15 shows, under the present conditions, heat exchanger crosses over folder point without one, do not use the hot public work that folder point is following.It addition, visible H3 positive control folder point position is until its Δ T_min_H3=5, and below Δ T_min_H3=5 (such as, Δ T_min_H3=4), C1 controls folder point.Select behind the optimal folder point position that the life-span improves policymaker, should at once correct the hot-fluid from problem place to source, should the use of the hot public work in correction process source range at once, should the use of the cold public work in the section of correction process place at once, should at once use the unit of minimal amount, and should reduce that { Δ T_min_i} setting value is to reach wanted target the most one by one.

In this example, as shown in Figure 16, in order to correct the energy of loss in topology, division is worked as the C1 of more than fore-clamp point (135 °F) and is moved to below fore-clamp point by H4 cooler.Result is the heat exchange or the inappropriate use of public work not existing now and crossing over folder point.But, the institute's syllabus after improving with this design is designated as Qh=155, Qc=45.Extra saving can be possible.It addition, will expect that policymaker may ask more/next improved project after a few years from now on is the most for many years along with cost of energy increases.In order to prepare for these requests, the analysis shown in Figure 17 to 23 comprises by the most observable following improved project inspection reduction { effect of Δ T_min_i} value, described inspection by evolutionary step but is most preferably pressed from both sides point (such as, policymaker selecting in technical clamp point interval before any improved project) with reference to want to reach and is performed.

For example, as shown in Figure 17, Δ T_min_H1 is currently at 60 °F.As shown in Figure 18, Δ T_min_H1 can be reduced to (such as) 5 °F to check its effect.It should be noted that by starting with H1, technique is avoided changing folder point position.The change of Δ T_min_H1 causes logistics to move to more than folder point.Press from both sides, in order to utilize, the energy that point is above, C1 can be divided further and extra HE unit (such as, H1-C13) can be added.

As Figure 19 and 20 show, recognizable Δ T_min_H4 and be reduced to (such as) 5 °F similarly to check its effect.Three order improved projects are used, if these amendments reproduce the target previously selected by policymaker, then stop in the life span of old factory.It should be noted that reduction Δ T_min_H2 without benefit, because of according to illustrated by structure, it is not resulted in the change of Waste Heat Recovery.This is because whole heating loads (Q) of the most fully utilized in current structure/exchanged heat logistics H2.Therefore, without more used heat/wasted energys be possible/can be used for reclaiming further from that logistics.

If policymaker changes now its idea and wants to carry out new improved project or its improved project that do not looks to the future during first item after 3 to 5 years, now in current techniques status method the most so, so as shown in Figure 21 to 23, it is by the face of the problem of initial new improved project.In order to initiate new improved project, check the current state of network.Cross over or the inappropriate use of public work if there is no folder point, then can only add surface area and/or strengthen existing HE unit to reclaim more used heat.

By way of example, it will be assumed that policymaker wishes that after a while the energy object of structure being used for being shown in Figure 21 is reduced to Qh=110 by Δ T_min_H3 is reduced to 5 °F by (such as), Qc=0.As Figure 22 shows, this will cause folder point (temperature) to move to the new position at 145 °F, thus cause the some heat transfer of the new leap shown in 151 to 153 (thick line) place folder and jeopardize the prior actions that in old improved project several years ago, (in prior projects) is taked.

As Figure 23 shows, in order to process this new situation and reach the wanted energy object made by policymaker, three coupling HE unit can be added in technique source region again to reach wanted target.But, this option may not only become expensive, and unrealistic because of the horizontal layout constraint diagram of factory.

Figure 24 explanation can have advantageous result in the situation: according to various embodiments of the present invention, policymaker identifies optimal folder point position (such as, 145 °F) before selecting factory's life-span or life cycle improved project target and all improved projects will implemented during factory's life-span.As the diagram illustrates, previously discussed energy object ambitious can use fewer number of unit (such as, total of six HE unit) obtain, and therefore policymaker obtains the approval to its project by being more likely to be able to because overcoming the horizontal layout constraint diagram of factory.In other words, it can continue executing with improved project without in midway stopping.

Figure 25 illustrates the data entry page of the network described in Figure 15, but arranges the energy object of structure the most as follows: Qh=110, Qc=0.For comparing purpose that the benefit of various embodiments of the present invention is described, Figure 26 explanation is according to the gained network configuration of the business software application program using pinch technology.It should be noted that the explanation of described figure uses current state of the art application program, even if the whole network of redesign that allows to start from scratch is to reach wanted energy regenerating target, produced solution remains a need for 8 HE unit.

By contrast, for illustration purposes, Figure 27 shows the result of the systems technology improving solution example for the life-span.According to embodiments of the invention, if policymaker determines to select to be in the lower end, folder point interval controlled by flow C 1 (such as, 100 °F of lines) place folder point position as the terminal in its improved project course, so problem becomes threshold value, wherein there is not the conventional system method comprising engineer in circle according to current state of the art.nullBut，" it is used for the system synthesizing unconfinement and constraint heat exchanger network and identification for the optimum topology of improvement in future above in association with entitled filed in 30 days October in 2009、Methods and procedures product (System，Method，And Program Product for SynthesizingNon-Constrained and Constrained Heat Exchanger Networks and Identifying OptimalTopoloy for Future Retrofit) " the 61/256th,Technique and achievement (such as) thereof that various techniques described in No. 754 U.S. Provisional Application cases describe can provide the design shown in figure.

Figure 28 illustrates that the conventional of the simplified example of individual process represents (Lin Huofo (Linnhoff) et al.).For comparative purposes, Figure 29 explanation represents according to an embodiment of the invention.This expression aid decision making people visualization design mistake valuably improved controls logistics, the existence etc. of leap folder point heat exchange unit with determining.In illustrated industrial technology, H1 controls folder point position and has the highest impact on energy regenerating.It should be noted that and never obtain the folder point at 127 °F by reduction " overall " Δ T_min.

Figure 30 explanation is illustrated between H1 and C2 another the conventional expression of the industrial technology adding new HE unit.For comparative purposes, Figure 31 explanation represents according to an embodiment of the invention.It should be noted that overall situation Δ Tmin=19 °F arbitrarily presss from both sides point in order to position and finds new Waste Heat Recovery target especially.In this example, after completing the design of HEN improved project, change into using overall situation Δ Tmin=15 °F rather than 19 °F, and as shown in Figure 31, the network after improvement still represents the heat transfer crossing over folder point.It should be noted that Lin Huofo (Linnhoff) et al. example nonsystematic, need repeatedly, need particularly to initialize and cannot act as standard factory life-span improved method.

Following table provides the senior summary of " program searched for improved project solution " of example according to an embodiment of the invention:

Above-described step can be further divided into the various stage, and the described various stages comprise " seeing clearly the stage " (it comprises generation laboratory test report), " setting the goal the stage " and " finding solution " stage.

Following table provide example according to an embodiment of the invention " seeing clearly/laboratory test " if the senior summary of the stem portion in stage:

		Step #1:	Current { the technical clamp point at Δ T_min_i} of definition.
Step #2:	Definition process folder point interval.
		Step #3:	If it is required, identify " implying " folder point in Threshold is applied.
Step #4:	Calculate each in the case of the minimal amount of HE unit.
		Step #5:	Optimal folder point position is identified from number of unit and energy expenditure viewpoint.
Step #6:	Draw physical technology folder point.

Following table provide example according to an embodiment of the invention " setting the goal " if the senior summary of the stem portion in stage:

Following table provides the senior summary in " finding solution " stage of example according to an embodiment of the invention:

Following table provides the senior summary of " finding solution typically to mate " program of example according to an embodiment of the invention:

nullFigure 32 to 42 explanation is used for the example of the systems technology of the program using the industrial technology example identified in " heat exchanger network synthesis (Heat ExchangerNetwork Synthesis) " (1995) thank to noy (Shenoy) to implement for the lookup of improved project solution，It provides for the number of energy regenerating and unit to be added and sets the goal for a long time，Described systems technology surpasses common process folder point methods，Common process folder point methods (such as) uses overall situation Δ T_min and rule thereof especially，Solution is packed whereby、In being not included in、Do not look to the future improvement、Unstable，And common process folder point methods is limited by following facts: each special change of overall situation Δ T_min in the middle of solution understand connection in the case of change the overall plan of solution.

The structure that Figure 32 explanation is described according to routine techniques.By contrast, Figure 33 illustrates that figure is described according to an embodiment of the invention, and it can enable a designer to only find improvement solution by detection.

Figure 34 to 36 illustrates from " laboratory test results " and the various steps in " seeing clearly " stage.For example, Figure 34 presss from both sides to put position and Δ T_min_H2 is adjusted to 0 °F by the adjustment explanation H2 positive control of Δ T_min_H2 and folder o'clock will be caused to move to 125 °F from 112 °F.Figure 35 illustrates that the reduction (being herein 5 °F) of Δ T_min_H1 will reproduce the highest impact on Waste Heat Recovery.Figure 36 illustrates to use present topology, reduces mobile folder point by Δ T_min_H2 and will not result in and realize energy expenditure target, and therefore, the most should not carry out this approach-can change into considering Fluid branch.It addition, described figure illustrates that the degree that folder point moves up pressing from both sides more than some reduction cold load is more than the degree reducing heat load.

Figure 37 to 41 explanation is from the various steps in " finding solution " stage.For example, Figure 37 illustrates at 161,162, the H1-C1 HE unit at 161 is reconfigured to the place section at 162 so that unit is no longer crossed over when fore-clamp point.Figure 38 illustrates the application of Fluid branch, and C1 mates having enough logistics through dividing folder point is following reaching folder point and H2 through division whereby.The topology that this Fluid branch recoverable causes because of not meeting the minimal amount of HE unit is lost.

If policymaker comes back for moce, energy is saved, then as shown in Figure 39, can reduce Δ T_min_H1 further.This reduce can be one next and combine so that analysis is for the effect of each reduction of each logistics with adjusting of load and affluent-dividing.Additionally, as Figure 40 shows, Δ T_min_H2 can be reduced to adjust folder point position, the value of the about half of original value it is adjusted to herein, make { Δ T_min_i}={5,7}, and coupling connects, load and branch will be configured to adjust for new folder point leap (such as, 118 °F).

Figure 41 illustrates to press from both sides the adjustment after Point matching in correction process because of produce to the adjustment of newly folder point, and the corresponding essence together with energy requirement reduces.Note that according to preferred disposition, make Δ T_min_i in amendment erroneous matching and amendment after the number of unit in order to satisfied required minima and reduce.It is to say, preferably process stipulation should be made to affect the change of the Δ T_min_i of folder point position before the extra reduction performing other Δ T_min_i.

Figure 42 to 50 illustrates that solution represents and the comparative example of solution with conventional H EN using Mathematical Planning described in " for improving the mixed-integer nonlinear programming model (A Mixed Integer NonlinearProgramming Model for Retrofitting Heat-Exchanger Networks) of heat exchanger network " (1990) of Fu Luodesi (Floudas) et al. according to an embodiment of the invention.The structure that Figure 42 explanation is described according to Conventional mathematical planning technology.By contrast, Figure 43 illustrates that figure is described according to an embodiment of the invention.From the result to the laboratory report that counter structure performs, can determine in the drawings and vision heat-transformation logistics H1 controls folder point position in limited range and controls for any Δ T_min_H1 ＞ 3 °F and the Δ T_min_H2 that such as there is currently or { during Δ T_min_i} ＜=5 °F, C2 controls a folder position when two.Folder point interval is discontinuous, and it starts at 353 °F and jumps to 440 °F when Δ T_min_H1=3.Can also readily be and determine have by crossing over off-energy in the topology that folder Point matching causes with structure described in visualization.Can also readily be and determine, with visualization H1, energy regenerating had the highest impact, and therefore may be used to provide optimal public work path.

Figure 44 explanation by hot logistics H1 from C1 mate again mate for the mating of C2, reconnecting H2-C1 HE unit along the various location in H2 path and adding the result of new C1 heater.It should be noted that H2-C1 mates leap current process folder point again.Figure 45 illustrates to apply Fluid branch to cross over the result of folder Point matching with correction.Specifically, in order to move to C1-H2 press from both sides point, C1 can be split into C11 and C12 below folder point.

In the case of there is the first coupling again completed, public work path can be utilized by adding more areas/reduction H1.For example, Figure 46 explanation is by adding more areas or H1 is additionally reduced to 10 °F making that { Δ T_min_i}={10,10} and the heater removed on C2 utilize public work path.Figure 47 explanation by add more areas or additionally H1 is reduced to 3 °F make Δ T_min_i}={10,10} and re-use the C2 exchanger for H1-C1 further with result.

Figure 47 further illustrates " distance terminates " place after following some improved projects, and problem will be ultimately converted to threshold value.Valuably, it is known that therefore this fact will provide do not use the suggestion of this solution route today to designer from starting, because it adds a heater in early days in improved project again, and then after require to damage described added heater together with old heater in following improved project.Therefore, solution should be substituted for the process choice described in Figure 42 and 43.

As it was previously stated, described problem has the cooler in the technique place district crossing over folder Point matching and technical clamp point temperature more than 353 °F.As Figure 43 shows, at the folder point that described folder point is above, the number of hot logistics is equal to the number of cold logistics, but since the FCp_hot ＞ for H1 is used for the FCp_cold of C1, as shown in Figure 48, technique can divide folder above H1 and the C2 logistics of point and coupling H12-C22 and C21 and H2.

Figure 49 further illustrates Δ T_min_H1 according to an embodiment of the invention and is reduced to the effect that 3 °F of folder points caused as identified in advance during laboratory test phase jump.In order to this design finally be decided, technique only needs to comprise some load/affluent-dividing optimizations for the division H1 path at 171,173/be reassigned plus damaging old heater 173 to provide the result shown in Figure 50.

Figure 51 to 55 illustrates that solution represents and another comparative example of solution with routine (Fu Luodesi (Floudas) et al.) HEN using Mathematical Planning according to an embodiment of the invention.The structure that Figure 51 explanation is described according to Conventional mathematical planning technology.By contrast, Figure 52 illustrates that figure is described according to an embodiment of the invention.Can be easy to see, Hl logistics positive control folder point position, { it is 360MW that the reduction of Δ T_min_i} value will cause this example problem to become the energy of loss in Threshold, and topology.

According to embodiments of the invention, in order to solve this problem, process implementing implicit folder point concept, technique first positioning process before problem is converted to Threshold presss from both sides point whereby.Figure 53 illustrates that technique is from { Δ T_min_i}={20,10,20} to { Δ T_min_i}={60, the initial conversion of 10,20} is to be initially defined in 440 °F by implicit folder point position.H1 and C1, and the H1 load used along public work path from other HE unit deduction below folder point are mated in Figure 54 explanation more than implicit folder point.Figure 55 further illustrates and deducts 360MW from H2 by again mating C3-H2, but this deducts 480 MW.Thus, technique can reduce C1-H2 coupling and reaches 120MW and loaded thermal balance by division H2 to meet H22-C1 and H21-C3.

Figure 56 to 66 illustrates that solution represents and another comparative example of solution with routine (Fu Luodesi (Floudas) et al.) HEN using Mathematical Planning according to an embodiment of the invention.The structure that Figure 56 explanation is described according to Conventional mathematical planning technology.By contrast, Figure 57 illustrates that figure is described according to an embodiment of the invention, and Figure 58 illustrates that the minimum being used for H4 configures close to reduction and the resulting structures of temperature.

Referring mainly to Figure 57, can be easy to see, there are the multiple HE unit crossing over 100 °F of folder points.nullAdditionally，By using laboratory test phase，Can be seen that/determine Δ T_min_H4、Δ T_min_H2 and Δ T_min_C5 value positive control folder point position，Folder o'clock is between 100 °F and 160 °F，C1 controls the folder point position at (100 °F) place under the conditions of currently existing，C1 continues when Δ T_min_H4 ＞ 26 °F, the rest does not changes to control folder point position，And H4 controls folder point position (according to its Ts) when the rest does not changes any Δ T_min_H4 ＜ 26 °F，But after Δ T_min_H2 is reduced to zero，C5 is at once for Δ T_min_H4 and Δ T_min_H2 at its lower bound (such as，Be respectively 5 °F and 11 °F) place any combination control (140 °F) place folder point position.Can also be seen that/determine that Δ T_min_H4 value reduces problem Waste Heat Recovery is had the highest impact, for the optimal folder point of minimal amount unit 140 °F at, and most preferably press from both sides also at 140 °F for recuperation of heat.Can see/determine that two are crossed over folder Point matching (H4-C3, H1-C2) and cause the possible energy regenerating of loss in the topology of about 10% further.

It should be noted that, reference thermal logistics H3 and cold flow C 4, when have this hot logistics-cold logistics combination have cause the hot logistics supply temperature (Ths) the hot logistics minimum equal to cold logistics target temperature (Tct) and equal hot logistics and cold logistics thermal capacity flow rate (FCpH=FcpC) close to these special circumstances of temperature time, cross over the two logistics in folder point one HE unit of Temperature Matching and do not produce leap folder point situation, and therefore need not correction.

Figure 59 illustrates that correction is crossed over the one in folder Point matching (H1-C2 coupling), division logistics H1 and adds new HE unit (H12-C2) and do not change Δ T_min_i with the outer 1.92MW of the amount of income obtaining Waste Heat Recovery.Figure 60 explanation is by and folder point following division H4 above at folder point and H41 reconnects to C3 corrects H4-C3 leap and presss from both sides Point matching.It should be noted that and can not obtain the rest (0.625MW) to be saved completely according to this design direction, can use cold coupling because not existing at folder point for public work path for H42.So it would be desirable to mainly change.

Figure 61 illustrate to use Δ T_min_i substitute another demonstrative structure set and it causes folder o'clock to the reorientation of 140 °F.It should be noted that H4-C1 crosses over folder point heat transfer coupling and will be difficult to correct crop exterior-heat back and forth, as discussed above in improving future.Accordingly, though by cross over the heat loss that causes of erroneous matching of folder point Δ T_min_i} set in the reducing further of value in the case of also will be difficult to recovery in improving future.

Figure 62 illustrates the demonstrative structure of Figure 57, and the folder point extended between 100 °F and 160 °F that its explanation determines according to exemplary processes is interval.According to exemplary processes, can the minimal amount of required HE unit identified below: 160 °F of folder points are 16 HE unit, are 14 HE unit for 140 °F of folder points, and is 15 HE unit for 100 °F of folder points.Embodiment according to technique, if and only if when fore-clamp point position is optimal folder point position, and labelling is crossed over and pressed from both sides point and public work violator and adjust structure to eliminate because of the energy of loss in the topology using the unit fewer than the minimal amount of unit and erroneous matching to produce.But, in this example, laboratory test instruction optimal folder point position is 140 °F.It should be noted that according to preferred disposition, it is possible to can be important by folder point position adjustment to final this feature selected, because it enables a designer to control improvement solution selection.Lacking the major defect that this ability is mathematic programming methods, because once model is through formulating and object function and data base are in appropriate location, output cannot be controlled by designer.

Figure 63 explanation is used for the reduction of the Δ T_min_i value of H2 and H4 to make folder point displacement to 140 °F.After selecting optimal folder point position, as previously mentioned, technique works to calculate fresh target, and labelling crosses over folder point and public work violator, and eliminate because using the unit fewer than the minimum w.r.t number of unit and because the energy of loss in the topology that causes of erroneous matching.It should be noted that H3-C4 coupling is currently not intended as leap folder Point matching but may be considered as crossing in improving future after reduction Δ T_min_H3 pressing from both sides Point matching.It shall yet further be noted that initial designs uses than required minima (being 14 HE unit for 140 °F of folder point positions) few 4 HE unit according to an embodiment of the invention.It addition, the Δ T_min_global that initial designs uses is identical with the Δ T_min_global used by Fu Luodesi (Floudas).

Figure 64 illustrates that amendment connection between H4-C3, H1-C2 and H1-C1 crosses over folder Point matching to eliminate, and remembers that the future that H3-C4 mates crosses over folder Point matching simultaneously.Figure 65 further illustrates execution Fluid branch (herein for H1 and H4), change coupling, and use above-described rule to handle Δ T_min_i (herein for Δ T_min_H2) with balanced load, thus cause the removal of a C1 heater, 10% extra save of cooling, 8% extra save of heating, 12 HE unit rather than the utilization of 14 HE unit, and the topology improved for following improved project.It should be noted that selected Δ T_min_i sets and the Δ T_global used by Fu Luodesi (Floudas) is almost provided.

Figure 66 explanation finally improves, reduce the Δ T_min_i for H3 whereby, be followed by and perform the Fluid branch of C5 and the interpolation of new H3-C5 HE unit, thus cause the 23% of cooling work extra to be saved, 19.5% extra save and the utilization of 14 HE unit that 13 HE unit rather than Fu Luodesi (Floudas) require of heating work.

Figure 67 to 72 explanation HEN improves, and remembers that the improvement utilizing above-described innovative approach and decoupling evolution solution is for multiple public works HEN simultaneously.The energy loss that previous case is generally mentioned for existing single public work HEN dissects.Figure 67 explanation dissects for the energy loss of existing multiple public works HEN.Although the many principles described about single public work HEN can directly migrate to the analysis of multiple public work HEN, but there are some differences and should be discussed.For example, according to exemplary configuration, energy quality/theoretical work=T0*{ (∑ Q_i/Tout_i) _ before retrofit-(∑ Q_i/Tout_i) the after retrofit} of loss in the topology that HEN will save in improving, the wherein cryogenic temperature under T_out_i=grade i, freezing work under Q_i=temperature grade (T_out_i), and T0=environment temperature.

Figure 68 explanation has the example simple network of four freezing grades, and Figure 69 explanation is for carrying out, before improving, the data page that energy quality sets the goal.As described above, first technique determine the existing network driving force distributed for life-span decision-making.As most preferably shown in the Figure 70 of the energy quality target of wanting being described separately after improvement and energy quality/merit loss is to 71, after making this and determining, technique performs mode of progression from top to bottom.Finally, as shown in Figure 72, treating each freezing grade R just as it is folder point, and division also mates logistics again.Although it should be noted that the freezing grade of leap second, but division logistics FCp21-FCp3 coupling not presenting problem, because it being the special circumstances with coupling flow.

It is important to note that, although having the above embodiment of the present invention described in the context of fully functional system and technique, but it is understood by those skilled in the art that, the present invention and/or at least portions of mechanism in terms of it can be with the formal distributions of computer-readable media, described computer-readable media is used for the various ways of the one group of instruction performed on a processor, multiple processor etc. in storage, and no matter in order to how actually to perform the particular type of the media of described distribution, embodiments of the invention are equally applied.The example of computer-readable media is including but not limited to nonvolatile, hard-coded type media, such as read only memory (ROM), CD-ROM and DVD-ROM, or eprom (EEPROM)；Recordable type media, such as floppy disc, hard disk drive, CD-R/RW, DVD-RAM, DVD-R/RW, DVD+R/RW, HD-DVD, memory stick, minidisk, laser disk, Blu-ray disc, flash drive, and the memorizer of other newer type；And certain form of transport-type media, such as can store digital communi-cations link and the analog communication links of described group of instruction.These media can contain (such as) operational order relevant with program product 51 and operational order, and the computer being used for the method step of the various embodiments of the heat exchanger network energy efficiency of industrial plants and the method for improvement according to management can executable portion.

Various embodiments of the present invention provide a kind of technique, described technique is individually implemented minimum close to temperature value to minima (such as zero, such as, Δ T_min_i}=0.0) and reduction one by one, and analyze the combination of Δ T_min_i}=0.0 with obtain about energy regenerating is had the highest impact { seeing clearly and identifying of Δ T_min_i} most preferably may target, then gained network is compared with real network to identify that in topology, the energy of loss is (i.e., put into practice by erroneous matching and use the unit fewer than the minimal amount of unit to cause) and area in the energy (capital-energy balance) of loss.Can be by via using the Fluid branch new cooler of interpolation and heater and new HE unit the number of unit to be increased to minima and obtains gained network.Exemplary processes provides and utilizes and/or correct current public work path and produce new public work path and if necessary identify, adjust, replace and/or revise the ability that process heat reclaims when making its Δ T_min_i=0.0K the public work path providing the highest impact when needing only once improvement.

Exemplary processes gives designer and finds and use two { abilities of the interval unrelated tight structure of the technical clamp point that Δ T_min_i} sets: press from both sides point with the folder point improved and lower bound in existing network.Technique gives the change of designer's chien shih process conditions the most in the design and/or { folder point is moved (rather than removal leap coupling) to complete two abilities mating logistics above and below by Δ T_min_i} optimization.Valuably, this feature can enable a designer to control to improve solution selection；Lacking the major defect that this ability is mathematic programming methods, the most once mathematical programming model is through formulating and object function and data base are in appropriate location, and output cannot be controlled by designer.Additionally, in the case of there is no this feature, if designer is just seeing at it changes its idea about some features in final solution when solution is in progress/evolves, then in the case of mathematic programming methods, designer will generally need to return to the beginning of technique.

Exemplary processes also comprises costing bio disturbance in topology, and described calculating can give designer in actually used { " extruding coupling " impact of the HEN heat recovery efficiency under Δ T_min_i}, and the position of these matching networks folder point for all extruding couplings.For each new Δ T_min_i} repeat this calculate reproduce be simultaneously used for all extruding logistics in each new { off-energy target in the topology at Δ T_min_i}.

Exemplary processes can describe two the problem at Δ T_min_i} setting, and one be actual set and second be { Δ T_min_i}={0.0 or 1}；Optimal folder point position can be selected from energy viewpoint, the minimal amount viewpoint of unit to be added or two viewpoints；The minimal amount of the HE unit in the case of using n-1 pinch technology heuristic to calculate two kinds；Utilize traveling technology { to find tight Further aim after the reduction of Δ T_min_i} system；Find by producing new public work path and correct erroneous matching；And once define topology, facility Non-Linear Programming or for disposing other technology of load distribution and Fluid branch to minimize the outer HEN area of total value.

Various embodiments of the present invention provide some advantage/additional advantage.These advantages can comprise to introduce remembers/sees that the systems technology of following improvement was improved for the factory HEN life-span.Systems technology can adjust dynamic programming ultimate principle to ensure that long-term factory improved project will not contradiction each other.This technology can be included in the method that sets the goal for a long time likely combining down the number for energy regenerating and unit to be added carried out of technological parameter and structural modification, and can provide the analysis of the result in evaluation stage and identify tight target and to finding the solution stage to see clearly before any improved project is initial.It should be noted that, this is contrasted with technical clamp point methods, described technical clamp point methods use overall situation Δ T_min especially and encapsulated, be not included in interior, improvements that do not look to the future, unstable solution, and through carry out each special change making overall situation Δ T_min in the middle of solution without clear connection in the case of change the overall plan of solution.

Systems technology can comprise use coupling again come the most exhaustive (the need to) by the current public work path used with evolution modelling to produce optimal public work path, can pass through one by one to set for each hot logistics that { Δ T_min_i}=0.0 systematically selects optimal path whereby.Can determine energy object for { Δ T_min_i}={ [{ Δ T_min_i_lower:{ Δ T_min_i_Upper] }, the highest { Δ T_min_i} is the energy object that currently can reach in existing network before the first improved project and relatively low { Δ T_min_i} is set as the new settings that lower bound sets or determines for the last improved project carried out in future during the life-span of facility.The evolution embodiment to be revised using repetition emulation mode to carry out with the stage amendment selecting to reproduce the highest benefit/benefit cost ratio can become easy, now because defining last countermeasure.In known number step, remember/see that next this method based on innovation moved is possible, because can all movements of capture folder point position at method sets the goal the stage before improved project searches the solution stage.Even if only once improved project is used as the same rule of this systems technology and carries out.

Systems technology also can comprise identify in the case of with and without topological constraints and each topology change at and for existing HEN technique and topology change likely combine under for enhancing Waste Heat Recovery optimised process change.Systems technology also can comprise each topological constraints of identification (if there is more than one topological constraints) and set the goal each topological constraints and define to reclaim wasted energy to have most preferably to be affected and the topological constraints (such as, the energy component of loss in identification topology) of worst impact.Systems technology also can comprise that { Δ T_min_i} setting value optimizes, and may { the exploitation of the technical clamp point location drawing that Δ T_min_i} sets for all problems.

Systems technology also can comprise offer and enable a designer to only find the new abstraction graph of the current network improving solution to represent/draw by visual detection.Unique figure shows hot logistics and/or the identification of cold logistics that can promote controlling folder point position.Process conditions and any of HEN topology are successfully revised, before determining any amendment, knows that described logistics can be considered priori.Orientation problem technical clamp point diagram is also useful to the picture completing technical clamp point interval, especially when there is not technical clamp point (in threshold application) and in the case of such as CDU (wherein having non-process folder point).The logistics at once on energy regenerating after reducing its Δ T_min_i with the highest impact can position and/or re-position at by again mating on public work path.

Various embodiments of the present invention comprise the HEN wasted energy quantity or the method for mass recovery improved for factory's life-span, and it comprises: enable factory engineering teacher from the new HEN method for expressing of the energy efficiency of the First view existing HEN of inspection；Enable Designer Craftman from the new method for expressing of basic engineering energy efficiency new for First view inspection HEN；It is not resulted in the new HEN evaluation of Future Project and the correct sequence of the improved project of the project contradiction of today with the figure identification drawing the logistics controlling folder point position and finds solution method.New HEN represents, evaluates and finds solution method to comprise to identify and problem wasted energy reclaims the logistics with the highest impact optimal { Δ T_min_i} sets to produce；And provide guarantee without the following guideline by the HEN improvement solution of evolution order violated, improve, for many public works of HEN, the program that offer sets the goal and many public works improvement solutions of HEN are searched for wasted energy quality.

The various embodiments of method comprise the method reproducing innovative solution method but have the bounded part enabling a designer to sequentially implement solution and do not injure the decoupling evolution amendment of following improved project.Conventional method considers to improve sometimes for factory's life-span to continue more than 30 years without one, and preferred embodiment considers and systematically disposes life-span issue of improvement.Do not assure or ensure that the improvement action taked at current improved project now will not be with the improvement action contradiction needed in following improved project later, and according to preferred embodiment, it is contemplated that and consider these actions.Do not look to the future in folder point methods and network pinch method site plan, and according to preferred embodiment, site plan was provided to designer before any improved project solution and is allowed it to decision/selection maximum number by the HE unit of interpolation during the life-span that factory improves by designer's use.

It addition, do not consider in folder point methods and network pinch improved method { the system reduction of Δ T_min_i} sets the goal, and preferred embodiment utilizes the method to combine United States Patent (USP) 7, the traveling technology described in 698,022.Technical clamp point and network pinch method do not consider the fact that folder point changes its position because of Δ T_min amendment, so that method becomes " shooting in the dark " method, and preferred embodiment not only considers folder point position change but also set the goal optimal folder point position find the improvement solution considering likely to press from both sides some position changes.Conventional method identifies from the minimal amount viewpoint of energy expenditure viewpoint and unit without one and most preferably presss from both sides a little, and according to preferred embodiment, carry out this and identify and analyze strengthening design.And, conventional method can not identify the logistics controlling folder point position, and according to preferred embodiment, carry out this and identify to guide following improved project.It practice, according to preferred embodiment, the interval and optimal folder point of folder point can be carried out under likely the combining of the change of parameter and structural manufacturing process condition simultaneously identify both.

In folder point methods and network pinch method, during setting the goal and finding the improvement solution stage, do not consider the impact using the unit fewer than the correct number of unit to energy regenerating, and the present invention considers this situation.There is not routine sets the goal step or system approach that impact and correction thereof on erroneous matching set the goal, and in preferred embodiments, set the goal as complete and comprise and likely revise, such as process reform, reduction, the correction of erroneous matching and the interpolation of new minimal amount unit of ({ Δ T_min_i}).Network pinch method is the most systematically applicable to all Thresholds, and embodiments of the invention may can work for any in problem/application (extruding or threshold value).Conventional method considers without one system process condition amendment (parameter and structure) improved for HEN simultaneously, and according to the present embodiment, analyzes these conditions.

Due to the various combinations of above-described feature, decoupling evolution solution is possible, and wherein implementation strategy realizes following improved project.These methods can contain different types of HEN improved project, such as: has the predefined improved project embodiment evolved based on solution based on innovation improved of finite population；Remember the method based on evolution of next improvement/movements all；Once evolve improved project；And an innovative approach project.Valuably, various combinations also provide for processing erroneous matching, the minimal amount of unit that used and the system process of process conditions and ({ Δ T_min_i}) in order to provide life-span plan/management perfection ability.

nullPresent application for patent advocates the " system improved for the evaluation of heat exchanger network energy efficiency and life-span entitled filed in 4 days March in 2011、Program product and method (Systems，Program Product and Methods For HeatExchanger Network Energy Efficiency Assessment and Lifetime Retrofit) " the 13/041st,The priority of No. 057 U.S. patent application case，Described 13/041st,No. 057 U.S. patent application case is the " system of interference with probabilistic heat exchanger network with the optimum topology identified for improvement in future for synthesizing the higher level that looks to the future entitled filed in 5 days October in 2010、Program product and method (Systems，Program Product，and MethodsFor Synthesizing Heat Exchanger Networks That Account For Future Higher Levels of nullDisturbances and Uncertainty and Identifying Optimal Topology For Future Retrofit) " the 12/898th,The continuation in part application case of No. 475 U.S. patent application case，Described 12/898th,No. 475 U.S. patent application case advocate the 61/356th of entitled filed in 21 days June in 2010 " for the heat exchanger network life cycle convertibility under likely the combining of technique change and the system synthesis methods and procedures product (Systematic Synthesis Methodand Program Product For Heat Exchanger Network Life-Cycle Switchability and FlexibilityUnder All Possible Combinations of Process Variations) of motility ",Filed in No. 900 U.S. Provisional Patent Application cases and 30 days October in 2009 entitled " for synthesizing unconfinement and constraint heat exchanger network and identifying the system of optimum topology improved for future、Methods and procedures product (System，Method，And ProgramProduct for Synthesizing Non-Constrained and Constrained Heat Exchanger Networks andIdentifying Optimal Topoloy for Future Retrofit) " the 61/256th,The benefit of priority of No. 754 U.S. Provisional Application cases，And the described 12/898th,No. 475 U.S. patent application case are " setting the goal and the system of optimal drive power distribution in energy-recuperation system entitled filed in 1 day March in 2010、Methods and procedures product (System，Method，And Program Product for Targeting and Optimal Driving Force Distribution in EnergyRecovery Systems) " the 12/715th,The continuation in part application case of No. 255 U.S. patent application case，Described 12/715th,No. 255 U.S. patent application case are " setting the goal and the system of optimal drive power distribution in energy-recuperation system entitled filed in 25 days June in 2007、Methods and procedures product (System，Method，And ProgramProduct for Targeting and Optimal Driving Force Distribution in Energy Recovery Systems) " the 11/768th,No. 084 U.S. patent application case (is now United States Patent (USP) 7,698,022) continuation application，Described 11/768th,No. 084 U.S. patent application case advocates the 60/816th of entitled filed in 23 days June in 2006 " setting the goal and the methods and procedures product (Method and Program Product forTargeting and Optimal Driving Force Distribution in Energy Recovery Systems) of optimal drive power distribution in energy-recuperation system ",No. 234 U.S. Provisional Patent Application cases、Filed in 26 days April in 2010 entitled " for synthesize unconfinement and constraint heat exchanger network system、Methods and procedures product (System，Method，And Program Product forSynthesizing Non-Constrained and Constrained Heat Exchanger Networks) " the 12/767th,No. 217 U.S. patent application case、Filed in 26 days April in 2010 entitled " for synthesizing the system of non-thermodynamic restriction heat exchanger network、Methods and procedures product (System，Method，And Program Product forSynthesizing Non-Thermodynamically Constrained Heat Exchanger Networks) " the 12/767th,Entitled " the system of the optimum topology for synthesizing heat exchanger network and identify for improvement in future filed in No. 275 U.S. patent application case and 26 days April in 2010、Methods and procedures product (System，Method，AndProgram Product for Synthesizing Heat Exchanger Networks and Identifying OptimalTopology for Future Retrofit) " the 12/767th,Entitled " the system setting the goal and identifying of the optimised process variable in bound energy recovery system filed in No. 315 U.S. patent application case and 8 days October in 2009、Methods and procedures product (System，Method，And Program Product for Targeting and Identification of OptimalProcess Variables in Constrained Energy Recovery Systems) " the 12/575th,The priority of No. 743 U.S. patent application case and rights and interests；nullAnd be entitled filed in 26 days April in 2010 " for synthesizing heat exchanger network and the identification system for the optimum topology of improvement in future、Methods and procedures product (System，Method，And ProgramProduct for Synthesizing Heat Exchanger Networks and Identifying Optimal Topology forFuture Retrofit) " the 12/767th,The continuation in part application case of No. 315 U.S. patent application case，Described 12/767th,No. 315 U.S. patent application case are advocated entitled filed in 30 days October in 2009 " for synthesizing unconfinement and constraint heat exchanger network and identifying the system of the optimum topology improved for future、Methods and procedures product (System，Method，And Program Product for Synthesizing Non-Constrained and Constrained HeatExchanger Networks and Identifying Optimal Topology for Future Retrofit) " the 61/256th,The priority of No. 754 U.S. Provisional Patent Application cases；nullAnd with on June in 2009 8 filed in the entitled " system that the overall situation for technique public work under varying conditions sets the goal、Program product and correlation technique (System，Program Product，And Related Methods for Global Targeting of Process Utilities UnderVarying Conditions) " the 12/480th,Filed in No. 415 U.S. patent application case and 4 days March in 2011 entitled " for heat exchanger network energy efficiency evaluation and the life-span improve method (Methods for Heat ExchangerNetwork Energy Efficiency Assessment and Lifetime Retrofit) " the 13/041st,No. 087 U.S. patent application case is relevant，The full text of each patent application case is incorporated herein by reference.

The typical preferred embodiment of the present invention is had revealed that with in description graphic, and although with particular term, but in descriptive sense, only use described term not for the purpose of limiting.The most specifically the present invention is described in detail with reference to these embodiment described.But, it will be apparent that various modifications and changes can be carried out in the spirit and scope of the present invention as described in the above specification.

Claims (16)

1. one kind in order to manage for having multiple process-streams of including multiple thermal process logistics and multiple cold process-stream The heat exchanger network energy efficiency of industrial plants and the heat exchanger network analysis of improvement and design device, described dress Put and be characterised by:

For identifying that major control is used for one or more technique things of the folder point position of existing heat exchanger network The component of stream；

For utilizing, the described identification of the described process-stream of folder point position described in major control will be determined for future The component of the optimal folder point position improved；And

For determining optimal heat exchanger network improvement project sequence based on the described optimal folder point position improved for future The component of row, described optimal heat exchanger network improvement item sequence is meeting working as of current wanted wasted energy recovery purpose Front heat exchanger network improved project reclaims the following heat exchanger network improved project of purpose with meeting final wasted energy Between extend.

Device the most according to claim 1, wherein said for determining optimal heat exchanger network improvement item sequence Component includes:

Set up for corresponding the increasing of the Capital expenditure increasing above and increasing energy efficiency based on public work cost Structure to each corresponding previously continuum of multiple order improvement plans that improvement plan is not conflicted in described sequence Part, the described continuum of the plurality of order improvement plan extended between current improvement plan describes wasted energy and reclaims Current the wanted grade of energy efficiency and with the service life of described industrial plants at the end of or close at the end of The wasted energy of time correlation connection recovers energy anticipated the wanted grade of efficiency.

3. according to the device described in any claim in claim 1 or 2, wherein said for determining optimal heat exchanger The component of network improvement item sequence includes:

For determining that the multiple expections for corresponding multiple heat exchanger network Curve guide impeller change are incremented by folder point position The component of the continuum of movement, the plurality of expection is incremented by folder point position and moves and be applied to the plurality of thermal process thing The incremental reduction of the one or more of logistics specific minimum temperature proximity values in stream is associated, described continuum With meet described current wanted wasted energy and reclaim the heat exchanger network Curve guide impeller of purpose and satisfied finally to give up Can reclaim and extend between the folder point position that the heat exchanger network Curve guide impeller of purpose is associated, compared to described currently Wanted wasted energy reclaims purpose, and described final wanted wasted energy reclaims purpose needs larger amount of wasted energy to reclaim, described correspondence Multiple heat exchanger network Curve guide impeller in each provide progressive larger amount of wasted energy reclaim.

4. according to the device described in any claim in claim 1 or 2, wherein said for determining optimal heat exchanger The component of network improvement item sequence comprises:

It is incremented by with the associated plurality of expection of change of corresponding multiple heat exchanger network Curve guide impeller for determining to provide The component of the folder point location drawing that what folder point position was moved describe in order, the plurality of expection be incremented by a folder point position move by It is applied to passing of the one or more of logistics specific minimum temperature proximity values in the plurality of thermal process logistics Increase and decrease little generation, described folder point position move with meet described current wanted wasted energy reclaim purpose heat exchanger network Network Curve guide impeller and satisfied final wanted wasted energy reclaim the folder point that the heat exchanger network Curve guide impeller of purpose is associated Extending between position, reclaim purpose compared to described current wanted wasted energy, described final wanted wasted energy reclaims purpose and needs Wanting larger amount of wasted energy to reclaim, the plurality of expection being associated with corresponding heat exchanger network Curve guide impeller is incremented by Each during folder point position is moved provides progressive larger amount of wasted energy to reclaim.

Device the most according to claim 4, the wherein said folder point location drawing provides and sequentially identifies multiple heat exchanger network The heat exchanger network improved project sequence of improved project is to define described optimal heat exchanger network improvement project sequence Row, each subsequent thermal exchanger network improvement project be configured in case with described heat exchanger network improved project sequence In any prior projects contradiction.

6., according to the device described in any claim in claim 1 or 2, it is further characterized by

It is specific for the one or more of logistics that be applied in the plurality of thermal process logistics is incrementally decreased Little approach temperature is to identify that multiple incremental folder point position is moved to define the improvement of multiple heat exchanger network whereby and set The component of meter；

For identifying each thermal process just crossing over optimal folder point exchanged heat in each respective heat exchanger network design The component of logistics-cold process-stream combination, one or more leap folder point heat exchanges of described optimal folder point definition Condition；

One or more to remove each respective heat exchanger network for perform in following matching technique again In design any leap folder point heat exchange conditions component: by impacted be thermally connected to different cold process-stream and Extra heat exchanger unit is added in described folder point above and below；

For perform one or more than one again matching technique with remove each respective heat exchanger network set One or more of component in execution the following after any leap folder point heat exchange conditions in meter:

Again mate in the plurality of process-stream is one or more with in one or more non-process One or more than one non-process folder point is considered in the presence of folder point, and

Again mate in the plurality of process-stream is one or more to examine in the presence of multiple freezing grades Consider the plurality of freezing grade；And

For analyze resulting structures in each respective heat exchanger network design with determine the feasibility of Continuous improvement with Form the component of described optimal heat exchanger network improvement item sequence whereby.

7., according to the device described in any claim in claim 1 or 2, it is further characterized by for for multiple The component of the following operation of each execution in heat exchanger network design:

The one or more of logistics that be applied in the plurality of thermal process logistics specific minimum temperature is incrementally decreased Degree proximity values moves with the multiple incremental folder point position identifying definition multiple folder point position；

Identify the plurality of selected one exchanged heat pressed from both sides in some position of the leap in respective heat exchanger network design Thermal process logistics-cold process-stream combination, folder point heat exchange conditions is crossed in the plurality of folder point position definition；And

Perform process conditions manipulation, minimum temperature proximity values handles or process conditions are handled and minimum temperature proximity values is handled Both are to move to described folder point position crossing over, with described, the hot logistics that folder point heat exchange conditions is associated completely With more than cold stream temperature or completely crossing over, with described, hot logistics and the cold logistics that folder point heat exchange conditions is associated Below temperature.

8., according to the device described in any claim in claim 1 or 2, it is further characterized by

Control was identified before meet the expection heat exchanger network design of described recoverable correspondence of giving up at structure Make and design one or more being associated with satisfied useless recoverable current heat exchanger network to be increased One or more of component in the plurality of process-stream that folder point position is moved；And

Move, with one or more than one folder point position, one or more logistics spy being associated for identifying Determine the component of each in turning point temperature.

9. according to the device described in any claim in claim 1 or 2, wherein said for determining optimal heat exchanger The component of network improvement item sequence comprises:

For receiving the minimum temperature proximity values number of the upper and lower bound of one group of logistics specific minimum temperature proximity values of instruction According to component, the described upper limit of logistics specific minimum temperature proximity values is can be according to described existing heat exchanger network The value that current structure reaches, the described lower limit of logistics specific minimum temperature proximity values is and will set being used for described industry The last improved project phase carried out at future date at the end of the service life of the described heat exchanger network executed The lower bound of association sets, the described following heat exchanger network improved project of described last improved project definition；And

For utilizing described minimum temperature proximity values data to determine, identification designs for process conditions and heat exchanger network The component in the technical clamp point range interval of the technical clamp point position range of all expection combinations of amendment.

10., according to the device described in any claim in claim 1 or 2, it is further characterized by

It is specific for the one or more of logistics that be applied in the plurality of thermal process logistics is incrementally decreased Little approach temperature moves to define whereby with the multiple incremental folder point position identifying the multiple different folder point positions of definition The component changed for multiple heat exchanger network Curve guide impeller of heat exchanger network design problem；

In the plurality of heat exchanger network Curve guide impeller change determined and there are corresponding different folder point positions The component of the minimal amount of required heat exchanger unit that is associated of each independent person；And

Wherein said for determining that the optimal component pressing from both sides some position improved for future includes for determining that offer heat is handed over The component of the optimal folder point position of the described minimal amount of exchange unit.

11. according to the device described in any claim in claim 1 or 2, and it is further characterized by

It is specific for the one or more of logistics that be applied in the plurality of thermal process logistics is incrementally decreased The component that little approach temperature moves with the multiple incremental folder point position identifying the multiple different folder point positions of definition；And

Wherein said for determining that the optimal component pressing from both sides some position improved for future includes for determining for one group Given process conditions provide the component of the useless recoverable optimal folder point position of maximum.

12. according to the device described in any claim in claim 1 or 2, and it is further characterized by

For determining the component of the minimal amount of the required heat exchanger unit in the design of a certain heat exchanger network；

Use the heat exchanger unit fewer than the minimal amount of required heat exchanger unit to useless recoverable for determining The component of impact；

The one in the plurality of thermal process logistics or one is designed according to described a certain heat exchanger network for determining Erroneous matching between one or more above and in the plurality of cold process-stream is to useless recoverable institute State the component of impact；And

For determining that heat exchanger unit has for the design of described a certain heat exchanger network relative to capital cost Say the not optimal heat exchanger unit surface area component on useless recoverable described impact.

13. according to the device described in any claim in claim 1 or 2, and it is further characterized by

For determining that needing to add a certain heat exchanger network to designs with in the specific minimum of existing process conditions and logistics Approach temperature is issued to the component of the minimal amount of the heat exchanger unit of current wasted energy recovery ability.

14. according to the device described in any claim in claim 1 or 2, and it is further characterized by below performing One or more of component in every:

By to be identified as control for a certain heat exchanger network design folder point position one or more works Described folder point position is moved in the process conditions amendment of process stream；And

By the minimum temperature being identified as controlling the described one pressing from both sides some position or more than one process-stream is connect Described folder point position is moved in close values amendment.

15. according to the device described in any claim in claim 1 or 2, and it is further characterized by the following One or more:

For only having the one of following public work kind apoplexy due to endogenous wind when the instruction heat exchanger network design of wanted energy purpose And the component of definition implicit folder point during not both: heating public work and cooling public work；And

For identifying that design strengthens the component of situation, wherein it is applied to described existing heat exchanger network and is presented with full The described final wasted energy of foot reclaims the heat exchanger network design problem of purpose and becomes Threshold during optimizing analysis.

16. 1 kinds in order to manage for having multiple process-streams of including multiple thermal process logistics and multiple cold process-stream The heat exchanger network energy efficiency of industrial plants and the device of improvement, described device is characterised by:

For receiving the structure of the data of the current hot transfer organization indicating the existing heat exchanger network for industrial plants Part；

For identifying that major control is used for one or more works of the folder point position of described existing heat exchanger network The component of process stream；

For identifying at once wasted energy to be reclaimed after reducing its corresponding logistics specific minimum temperature proximity values that there is Gao Ying The component of one group of one or more thermal process logistics rung；

For identifying that defining final wasted energy reclaims the intended maximum institute within the life-span of described heat exchanger network of purpose Wasted energy is wanted to reclaim the component of purpose；

For utilize in the following one or more determine for providing maximum used heat/wasted energy to reclaim and/or The component of the optimal folder point position of the required heat exchanger unit of minimal amount: major control is handed over for described existing heat The one of the described folder point position of parallel operation position or more than one process-stream, reducing, its corresponding logistics is specific At once Waste Heat Recovery is had after minimum temperature proximity values described group of one or more technique thing of the highest impact Stream, and define the intended described maximum institute within the life-span of described heat exchanger network of final wasted energy recovery purpose Wasted energy is wanted to reclaim purpose；And

For based on for providing maximum used heat/wasted energy to reclaim and/or described in the required heat exchanger unit of minimal amount Optimal folder point position determines the optimal heat exchanger network improvement sequentially identifying multiple heat exchanger network improved project The component of item sequence, described heat exchanger network improved project sequence is meeting current wanted wasted energy recovery purpose Current heat exchanger network improved project and the following heat exchanger network meeting described final wasted energy recovery purpose change Extending between income mesh, reclaim purpose compared to described current wanted wasted energy, described final wasted energy reclaims purpose to be needed Larger amount of wasted energy reclaims, and described heat exchanger network improved project sequence is configured such that described heat exchanger network Each subsequent project in network improved project sequence not previous with in described heat exchanger network improved project sequence Any one contradiction in project.