CN1427877A - Petroleum distillation method and system - Google Patents
Petroleum distillation method and system Download PDFInfo
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- CN1427877A CN1427877A CN01806559A CN01806559A CN1427877A CN 1427877 A CN1427877 A CN 1427877A CN 01806559 A CN01806559 A CN 01806559A CN 01806559 A CN01806559 A CN 01806559A CN 1427877 A CN1427877 A CN 1427877A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0033—Optimalisation processes, i.e. processes with adaptive control systems
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/12—Controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00168—Controlling or regulating processes controlling the viscosity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00186—Controlling or regulating processes controlling the composition of the reactive mixture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/085—Analysis of materials for the purpose of controlling industrial production systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/46—NMR spectroscopy
- G01R33/4625—Processing of acquired signals, e.g. elimination of phase errors, baseline fitting, chemometric analysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Feedback Control In General (AREA)
Abstract
In a distillation control system, a nuclear magnetic resonance (NMR) sensor identifies the composition of petroleum distillates from a distillation tower, and preferably also identifies the composition of the input feed method. This information is processed to obtain estimates of values of selected properties of the distillates and the feed. These values are provided to a multivariate controller, together with a setpoint of desired quality factors selected on the basis of competitive market forces, environmental regulations and economic factors including feed and product prices and operating cost. On the basis of the NMR measured values of selected quality properties, the multivariate controller generates values of manipulated operating variables that, when applied to the distillation system, adjust the distillation operation to reduce differences between the controlled variables and their respective setpoints. The ultimate values of the operating variables are determined, preferably in conjunction with an optimizer so that product qualities are maintained and the tower is operated in an economically optimum manner subject to specific characteristics of the refinery.
Description
Invention field
The present invention relates to the refining of petroleum field, relate in particular to the system that the petroleum distillate of distillation tower output is controlled.
Background of invention
Crude oil also claims oil, is a kind of hydrocarbon mixture of complexity.In order to produce the petroleum products of commercial value, be with separated from one another the coming of part hydro carbons in this mixture.Being used for crude separation is that the various physics and the chemical process step of part hydro carbons is generically and collectively referred to as " refining ".
Because each component volatilization difference of hydro carbons, making it effective each other isolating method is fractionation.This method is injected a distillation tower that thermograde is arranged in it with the oil of heating, and the distillation tower temperature is from reducing to low temperature by high temperature gradually to cat head at the bottom of the tower.Pass distillation tower by the oil vapour rising that each hydro carbons of its vapour phase becomes to be grouped into.Meet with lower temperature thereon when rising gradually.When temperature equaled a certain height of coagulation temperature of this steam composition in oil vapour arrives its distillation tower, this composition promptly condensed.Collect the hydrocarbon component that these are condensed at the tower tray that this height of tower is provided with.
In fact, the overhead product of being collected by arbitrary tower tray in the distillation tower is not certain concrete hydro carbons of pure form.In fact, although this overhead product based on certain concrete hydro carbons, it still comprises impurity.These impurity exert an influence to the performance of overhead product.Partly distilling a relevant difficulty with oil is the control of keeping the selected performance of overhead product.These selected performances comprise its physics and chemical property, as aromaticity, boiling point, flash-point, cloud point, viscosity, pour point, api gravity, zero pour, octane value, PIONA value and the Reid Vapour Pressure (RVP) of overhead product.These performances normally on industry or the market to the module of overhead product as product quality, therefore, be refined as the product quality factor here usually or be quality factor.
By controlling some or all this tower operational variables, might control above-mentioned quality factor.The example of tower operational variable comprises overhead product flow rate, stripped vapor flow rate, backflow flow rate, feed flow rates, pump circulation thermal load, pressure tower and tower feeding temperature condition.The definite operational variable that share depends on the concrete configuration of distillation system.But, the accurate control of overhead product quality factor is required that the selected performance number of overhead product composition is had up-to-date information.
A kind of method of obtaining the selected quality factor value of overhead product is that the sample chamber of experimentizing of this overhead product is detected.But this way is costliness but also consuming time not only.Its result is difficult to carry out frequent lab investigation, can not fully provide last look to the selected quality factor of all overhead products of the arbitrary moment output of distillation tower.Therefore, this method is not suitable for controlling fast the selected performance number of overhead product.
The another kind of method that obtains the selected quality factor value of overhead product admits that these performances are subjected to Effect on Temperature Distribution in the distillation tower to a great extent.In this method, undertaken along the temperature measuring of each height of tower by the transmitter that is distributed in the tower.These measured values are offered a handler, make it related with the quality factor value.Utilize tabling look-up of experience derivation result, or utilize the numerical value of mathematical model generation, can realize this association as temperature function.
Although exist relatedly between distillation tower overhead product performance and temperature distribution, this association is far from perfection.Therefore, above-mentioned currently known methods all depends on people to only can derive the hypothesis of overhead product quality factor numerical value according to temperature distribution.This hypothesis generally is wrong, thereby causes inaccurate.
Therefore, the object of the invention is to provide a kind of method and system that is used for being obtained by one or more overhead products of distillation tower output relevant product quality factor up-to-date information.
Other purpose of the present invention will be recited in down, and also should be clearly according to following description.
Summary of the invention
The inventive method is measured by the online nucleus magnetic resonance (NMR) to the selected performance number of at least a overhead product of distillation tower and optional tower charging, has overcome the defective of prior art.With the result of this on-line determination and together, offer a two-position controller as input to the expected value of the selected quality factor of overhead product.This controller is calculated as the tower operational variable value that obtains to meet the overhead product of expecting quality factor according to these information.Because measure is online execution, adopts system of the present invention and can respond rapidly and automatically to the charging of tower input and the variation of distillation tower output.Because nuclear magnetic resonance measuring does not rely on optics or ir radiation, so they are not subjected to the influence of the high opaqueness of tested material.In addition, nuclear magnetic resonance measuring is more stable as the function of temperature.Therefore, the various overhead products for the wide temperature range of distillation tower output all can draw reliable nuclear magnetic resonance measuring.
In the most enforcement of the present invention, guarantee two kinds of mensuration, and, be considered to preferred according to two groups of variablees of measuring control process to gas-oil feed and output finished product.But characteristics of the present invention can extend to the occasion that gas-oil feed is only measured in implementation, or only measure the occasion of one or more output cuts, and regulate one or more process variables according to this mensuration.According to the gas-oil feed material is measured, the regulate process variable carries out feed forward control and according to the mensuration to finished product materials, the regulate process variable carries out feedback control.
One embodiment of the invention comprise that to the related hydrocarbon material of still-process be the step that overhead product or feed sample apply stabilizing magnetic field.Owing to there is stabilizing magnetic field, nmr sensor produces magnetic field in a flash to overhead product or charging, and measures its response to transient magnetic field.Nmr sensor does not generally directly provide the performance numerical value to the relevant selected quality of overhead product or charging, and the chemical constitution of overhead product or charging but is provided.Therefore, the inventive method comprises the step of measuring the composition estimation materials quality factor of surveying according to it.Then these estimated values are used for the optionally operational variable of control tower, meet the overhead product of expecting quality factor thereby produce.The example of these quality factors comprises aromaticity, boiling point, flash-point, cloud point, viscosity, pour point, api gravity, zero pour, octane value, PIONA value, Reid Vapour Pressure (RVP) or other chemistry or physicals.
Purpose product quality factor is generally by the market competitiveness, legislations of environmental protection and comprise the decision of economic factorss such as charging, product price and productive expense.They also may be subjected to the restriction that refinery comprises device configurations and concrete feature such as validity and operational constraints.
Therefore, the inventive method can provide the rapid determination to the selected performance numerical value of various products that distillation tower produces.The optical measuring technique because the inventive method is based on nucleus magnetic resonance is so these accuracy of measurement are irrelevant with the opaqueness or the temperature of overhead product basically.
Implement that of the present invention kind of system is optional to comprise an optimizer, be used to stipulate production is met the permanent expectation numerical value of the selected tower operational variable of the finished product of expecting quality factor, take into account wherein charging and process cost and the output value simultaneously, this tower economical operation is carried out optimizing.This optimizer also can be taken into account the concrete feature of refinery, comprises device configurations, validity and comprises product production ultimate operational constraints.
This system further comprises one or more transmitters, is used to measure the selected performance of at least a overhead product and optional charging.With these sensing numerical value,, offer a controller with by the permanent expected value of this optimizer to selected operational variable regulation.This controller is according to information, expectation quality factor and the permanent expected value of this transmitter, and decision forms and meets the necessary operational variable currency of expectation quality factor overhead product, and the economic performance to this tower carries out optimizing simultaneously.
Description of drawings
According to the following detailed description and the accompanying drawings, these and other feature of the present invention and advantage all can be clearly, wherein:
Fig. 1 is the multivariate distillation hierarchy of control schematic block diagram that embodies feature of the present invention; With
Fig. 2 shows that Fig. 1 distills the schematic block diagram of hierarchy of control details.
Illustrative embodiment is described
Fig. 1 represents to adopt a kind of multivariable control system 10 of the principle of the invention.This multivariable control system 10 comprises a distillation system 11 that is communicated with multivariable controller 12.The output of distillation system 11 is a plurality of hydro carbons overhead products, and each characterizes with its selected quality factor value.These numerical value are to represent with the output vector y that feeds back to multivariable controller 12 in Fig. 1, are some controlled variablees that are used for multivariable control system 10.The measured value of charging quality parameter is represented with vectorial z, and being feedovered enters multivariable controller.Multivariable control system 10 further comprises an optimizer 13, is used for the selected tower operational variable of product of producing the expectation quality is produced permanent expected value, simultaneously the economical operation of tower is carried out optimizing.These expected values are represented with set-point vector r in Fig. 1, and set-point vector r is produced by optimizer 13, and offers multivariable controller 12.The element of vector r has been taken into account the feature of refinery, comprises device configurations, validity and comprises product production ultimate operational constraints.Optimizer 13 is optional increases of system 10.Another kind is used for controller 14 and sends into the embodiment of set-point data and comprise that a kind of artificial input and other of being used for is the keyboard device of currently known methods at control domain automatically.
According to one or more differences, output vector y and/or the feed forward vector z between set-point vector r, the expected product quality factor, multivariable controller 12 produces one group of controlled variable vector x of regulating distillation procedure when providing it to distillation system 11, to change the element value in the output vector, approach corresponding expected value.
As shown in Figure 2, this illustrative distillation system 11 comprises the input channel 14 that leads to distillation tower 15.Before arriving tower 15, pipeline 14 passes through process furnace 16, and the furnace operation temperature is under multivariable controller 12 controls.The pump 20 that links to each other with input channel 14 orders about crude oil and passes process furnace 16, and enters distillation tower 15.
Distillation tower 15 is factory of an oil refinery current version.Such distillation tower 15 generally comprises along a plurality of mouths that distillate of tower 15 different heights settings.Distillation tower 15 shown in Figure 2 only is illustrative, and can adopt the distillation tower of various patterns.Distillation tower 15 respectively distillates mouthful corresponding to by concrete cut of petroleum feeding institute distilled.Be in distillating of tower 15 bottoms, as oil fuel or kerosene corresponding to heavy ends.Be in distillating of tower 15 tops, as gasoline or petroleum naphtha corresponding to light ends.This distillation tower can comprise one or more pump circulation stream 50, so that remove heat from each section of tower, adjusts the internal reflux amount, and changes the volume of the following overhead product that produces of given quality.Tower distillates the calculated load that can influence multivariable controller 12 with the number of pump circulation stream, but not content of the present invention.Therefore, illustrate with being easy to that Fig. 2 has only represented that first and second of tower distillates mouthful 22,24 and pump circulations streams 50 for distinct.
First valve 36 is communicated with tower first and distillates mouth 22, and control is by the speed of distillation tower 15 extractions first overhead product.Equally, second valve 38 is communicated with tower second and distillates mouth 24, and control is by the speed of distillation tower 15 extractions second overhead product.First and second valve acutators 40,42 are handled by multivariable controller 12, control the state of first and second valves 36,38 respectively.
First nucleus magnetic resonance (NMR) transmitter 24 is to distillate mouthfuls 22 with tower first to be communicated with and to sample via 26 pairs first overhead products of first bypass tube or cut.Equally, second nmr sensor 28 is to distillate mouth 24 with tower second to be communicated with, and via 30 pairs second overhead products of second bypass tube or cut sampling.Equally, shown in the hierarchy of control 10 comprise the 3rd nmr sensor 51, it is communicated with this tower charging via bypass tube 52.Although distillation system shown in Figure 2 has showed three different IPs magnetic resonance sensors 24,28,51, should be known in that can adopt a nmr sensor to be communicated with first and second of tower by time sharing system distillates mouth 22,24 and charging 14.To offer calibrator 32,34,53 by nmr sensor 24,28,51 output informations of being read.This calibrator is the stoichiometry analogue unit preferably, and the output transform of this nmr sensor 24,28,51 is become the form that is suitable for its multivariable controller that is connected 12.
A kind of preferred sensor adopts the equipment and technology of I/A Series Process NMR, and (Foxoboro, Massachusetts) company provides, and still, also can use various types of nmr sensors by FoxboroCompany.
To each calibrator 32,24,53 and be suitable for implementing stoichiometry analogue unit of the present invention a kind of digital processing unit preferably is provided, survey hydrogenation per sample and carry out valuation instruction selected physicals.The well-known program of persons skilled in the art is implemented in these instructions.These programs comprise: formulate look-up table, carry out interpolation and implement mathematical model selected performance is carried out valuation between numerical value by look-up table.Each stoichiometry analogue unit can be partial to nmr sensor shown in Figure 2.In another embodiment of the present invention (not showing), the nmr sensor in the distillation system 11 is pressed time sharing system and is shared a general chemistry metering analogue unit.
Optimizer 13 and multivariable controller 12 all preferably are provided at the instruction of carrying out on the programmable digital treater with software.In fact, these instructions are all carried out on universal digital computer.But, specifically satisfy the desired properties requirement, can provide application specific integrated circuit to optimizer 13 and multivariable controller 12.Implement suitable optimizer of the present invention and multivariable controller and be by Simulation Sciencesof Brea (California, USA) company sells, its trade mark is respectively ROMeo
TMAnd Connoisseur
TMThe concrete assembling detail of multivariable controller 12 and optimizer 13 belongs to those of ordinary skills' horizontal extent, does not influence scope of the present invention.
In the operation of system, pump 20 orders about crude oil and passes process furnace 16 shown in Fig. 1 and 2, enters distillation tower 15, makes it be separated into a plurality of overhead products.These overhead products leave distillation tower 15 via a plurality of mouths that distillate, and wherein Fig. 2 is shown as two.First overhead product flows to first valve 36, and leaves system when first valve is opened.Distillate mouthfuls 22 the first overhead product sample with first,, feed first nmr sensor 24 through first bypass tube 26.Therefore, the flow rate of first overhead product is under 36 controls of first valve.Equally, second overhead product flows to second valve 38, and leaves system when second valve is opened.The second second overhead product sample that distillates mouth 24 is entered second nmr sensor 28 via second bypass tube 30.Shown in system 10 embodied optional feature, wherein feed sample is passed bypass tube 52 and is entered charging nmr sensor 51, and returns in the feed stream.
24 pairs of nmr sensors apply a stabilizing magnetic field from the first overhead product sample, aim at the magnetic dipole moment of associated molecule in this sample.Owing to there is a stabilizing magnetic field, nmr sensor 24 produces a kind of transient magnetic field, and its direction is different from and preferably is orthogonal to stabilizing magnetic field.This transient magnetic field is temporarily aimed at its direction and is different from the magnetic sample dipole that the dipole direction is aimed in this static-magnetic place.When cutting off this transient magnetic field, dipole rebounds and by stabilizing magnetic field the aligning that it applied is located in the sample.Just because this, this dipole produces a radio frequency (RF) signal.The concrete dipole stabilizing magnetic field that rebounds is aimed at localized speed, and the frequency of consequent RF signal, is the feature of this sample molecule structure.Consequent radio frequency spectrogram and nmr sensor 24 have constituted the method that a kind of definite sample chemical is formed to its detection.
Nmr sensor 24 provides the relevant chemical constitution information that distillates the overhead product of mouth 22 from tower first thus.Surveying per sample and form the respective value of calculating its selected performance, is known in this area.This institute test sample product are formed the operation that is transformed to selected performance numerical value is by first calibrator 32, preferably finishes by the stoichiometry analogue unit 32 that both are communicated with multivariable controller 12 and nmr sensor 24.Information to 32 inputs of the first stoichiometry analogue unit is to form as this sample chemical of being measured by nmr sensor 24.The output of the first stoichiometry analogue unit 32 is corresponding measured values of one group of selected performance.The second and the 3rd nmr sensor 28 and 51 and all operations in the same manner of relevant calibrator 34,53, and the performance information about second overhead product and charging offered multivariable controller 12.
This multivariable controller 12, according to nmr sensor 24,28,51 data that provided, and with generally from the conventional data of other transmitter (not shown) such as this area conventional and known such as pressure, temperature, time and flow rate, the red-tape operati variate-value of distillation system shown in the decision 11.Difference between the measured value of the expected value that determined these numerical value can make the product quality factor and corresponding selected performance reduces to minimum, and line operate provides as being incorporated into by first and second nmr sensors 24,28 and the first and second stoichiometry analogue units or other calibrator 32 and 34.As determined by optimizing 13, the permanent expected value of this operational variable also obtains considering within controller 12.Charging nmr sensor 51, in conjunction with the operation of stoichiometry analogue unit 53, provide the information of closing the charging quality to controller 12, so that can before feed variation becomes obviously to the influence of product, adjust the operation of tower.This feedforward ability is important handling because of crude oil is faded to aspect the another kind of feed variation that causes by a class.Sort controller 12 utilizes means known in the art to determine each controlled variable value.These methods generally comprise the mathematical model of consulting look-up table and the derivation of execution experience.
After determining these controlled variable values, multivariable controller 12 is passed to first and second valve acutators 40,42 with control signal.Then, these valve acutators 40,42 are optionally regulated first and second valves 36,38, thereby regulate the flow rate that distillates the overhead product of mouth 22,24 from first and second of distillation tower 15.In addition, multivariable controller 12 also can provide control signal to process furnace 16, to control the temperature that crude oil enters distillation tower 15.Controller 12 can be equally regulated any other various operational variables by method known in the art.
Although here the present invention is disclosed, can be applicable to two kinds of overhead products are selected the control of performance as it, obviously, describe according to these, the present invention is easy to expand to the control of two or more overhead products being selected performance.Equally, the present invention can be used for each material of multiple charging is measured and responded.
After describing a present invention and an one preferred embodiment, the new scope that requires patent protection is as follows.
Claims (21)
1, a kind of in the refining of petroleum system the selected performance to petroleum distillate carry out control method, described method comprises step:
Obtain nucleus magnetic resonance (NMR) spectrogram of petroleum distillate,
According to described nmr spectrum, determine selected overhead product the quality factor value and
According to determined numerical value, decision red-tape operati variate-value is to reach the expected value of described selected quality factor.
2, according to the process of claim 1 wherein that the described step of obtaining nmr spectrum comprises:
At least a sample to petroleum distillate applies a stabilizing magnetic field,
To described stabilizing magnetic field superpose in a flash magnetic field and
Measure of the magnetic dipole response of described petroleum distillate to described transient magnetic field.
3, according to the process of claim 1 wherein that described selected quality factor is to be selected from aromaticity, boiling point, flash-point, cloud point, viscosity, pour point, api gravity, zero pour, octane value, PIONA value, Reid vapour pressure (RVP).
4, according to the method for claim 1, further comprise the step of stipulating the expected value of described red-tape operati variable according to market condition.
5,, comprise that further selection comprises the step of the described red-tape operati variable of described petroleum distillate flow rate according to the method for claim 1.
6,, comprise that further selection comprises the step of the controlled variable of the temperature range that forms described overhead product according to the method for claim 1.
7,, further comprise the step of from the described variable combination of forming by overhead product flow rate, stripped vapor flow rate, backflow flow rate, feeding rate, pump circulation thermal load, pressure tower and tower feed heat condition, selecting described red-tape operati variable according to the method for claim 1.
8, a kind of system of controlling the selected quality factor of petroleum distillate, described system comprises
A nmr sensor that is communicated with the petroleum distillate source fluid, the nmr sensor of described configuration for the nmr spectrum that obtains at least a petroleum distillate sample and
A multivariable controller that is communicated with described nmr sensor, described multivariable controller according to the spectrogram reply data that is provided by described nmr sensor, is produced as the instruction of acquisition to the expected value of the described selected quality factor of petroleum distillate.
9, according to the system of claim 8, wherein said nmr sensor comprises:
Sample is applied the means of stabilizing magnetic field,
To the means of described stabilizing magnetic field stack transient magnetic field and
Measure the means of this petroleum distillate to the magnetic dipole response of described transient magnetic field.
10,, further comprise being used for the means that described performance factor is selected in the combination be made up of aromaticity, boiling point, flash-point, cloud point, viscosity, pour point, api gravity, zero pour, octane value, PIONA value, Reid Vapour Pressure (RVP) according to the system of claim 8.
11, according to the system of claim 8, further comprise an optimizer that is communicated with described multivariable controller, be used to determine the expected value of described tower operational variable.
12, according to the system of claim 11, wherein said optimizer is according to the operational variable of market situation decision tower.
13, according to the system of claim 8, wherein said multivariable controller comprises the means of the tower operational variable of the pressure tower that is used to stipulate to be selected from petroleum distillate flow rate, stripped vapor flow rate, backflow flow rate, feed flow rates, pump circulation thermal load, tower charging and heat condition, stipulates that described operational variable is in order to control the selected performance of described petroleum distillate.
14, according to the system of claim 8, wherein said multivariable controller comprises the means that are used to stipulate wherein form the temperature range of described petroleum distillate, stipulates that described temperature range is in order to control the selected performance of described petroleum distillate.
15, a kind of control method that is equipped with the petroleum chemistry refining system of distillation tower, described method comprises step:
The handled at least a material of online nuclear magnetic resonance measuring refining system, with the measured value of the selected performance of determining tested material,
The regulation tested material described selected performance expectation value and
In order to control the selected performance of at least a output cut of distillation tower,, determine the controlled variable value of this refining system according to measured value to described selected performance.
16, according to the method for claim 15,
Wherein said step measurements of carrying out nuclear magnetic resonance measuring should the refining system at least a feed material and
The decision of wherein said deciding step is used for this refining system controlled variable value of feed forward control at least.
17, according to the method for claim 15,
Wherein said step measurements of carrying out nuclear magnetic resonance measuring should the refining system at least a output product material and
The decision of wherein said deciding step is used for this refining system controlled variable value of feedback control at least.
18, a kind of operating device that is equipped with the petroleum chemistry refining system of distillation tower, described equipment comprises:
The nmr sensor of a configuration, be used to measure the handled at least a material of this refining system performance and
A multivariable controller that is communicated with described nmr sensor, described multivariable controller is according to the mensuration-response message that is provided by this nmr sensor, generation is used to regulate the control signal of the operation of this refining system, to obtain the expected value of the selected performance of at least a output cut.
19, according to the equipment of claim 18, wherein
Described nmr sensor measure at least a feed material of this refining system performance and
Wherein said controller produces the control signal that is used for this refining system feed forward control at least.
20, according to the equipment of claim 18, wherein
Described nmr sensor measure at least a output product of this refining system material performance and
Wherein said controller produces the control signal that is used for this refining system feedback control at least.
21, a kind of control method of petroleum chemistry process of the production petrochemical fraction that is equipped with distillation tower, described process comprises step:
Online nuclear magnetic resonance measuring is imported the parameter of relevant composition of at least a feed material of this petroleum chemistry process,
Online nuclear magnetic resonance measuring is by the relevant parameter of forming of at least a petrochemical fraction of this distillation tower output,
Real measured data is offered the controller of this petroleum chemistry process,
With the target information of the expectation parameter of identification this petroleum chemistry process at least a cut offer this controller and
According to real measured data and target information, produce the control signal that is used to regulate this process by this controller, to reach the set point value of real measured data at this target information.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17634200P | 2000-01-14 | 2000-01-14 | |
| US60/176,342 | 2000-01-14 | ||
| US17876200P | 2000-01-28 | 2000-01-28 | |
| US60/178,762 | 2000-01-28 | ||
| US53198900A | 2000-03-20 | 2000-03-20 | |
| US09/531,989 | 2000-03-20 | ||
| US63361200A | 2000-08-07 | 2000-08-07 | |
| US63343900A | 2000-08-07 | 2000-08-07 | |
| US09/633,439 | 2000-08-07 | ||
| US09/633,612 | 2000-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1427877A true CN1427877A (en) | 2003-07-02 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01806551A Pending CN1422324A (en) | 2000-01-14 | 2001-01-12 | Method and system for controlling a fluid catalytic cracker |
| CN01806559A Pending CN1427877A (en) | 2000-01-14 | 2001-01-12 | Petroleum distillation method and system |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01806551A Pending CN1422324A (en) | 2000-01-14 | 2001-01-12 | Method and system for controlling a fluid catalytic cracker |
Country Status (5)
| Country | Link |
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| EP (2) | EP1254197A1 (en) |
| CN (2) | CN1422324A (en) |
| AU (2) | AU2001229408A1 (en) |
| CA (2) | CA2397555A1 (en) |
| WO (2) | WO2001051588A1 (en) |
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| US10655996B2 (en) | 2016-04-12 | 2020-05-19 | Aspect Imaging Ltd. | System and method for measuring velocity profiles |
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| DE10121194A1 (en) * | 2001-04-30 | 2002-10-31 | Basf Ag | Device for controlling chemical synthesis processes |
| CN1329110C (en) * | 2001-09-26 | 2007-08-01 | 伊内奥斯美国公司 | Integrated advanced chemical process control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4437977A (en) * | 1982-09-29 | 1984-03-20 | Phillips Petroleum Company | Control of a catalytic cracking unit |
| ES2095205T3 (en) * | 1987-08-18 | 1997-02-16 | Bp Oil Int | METHOD FOR THE DIRECT DETERMINATION OF PHYSICAL PROPERTIES OF HYDROCARBON PRODUCTS. |
| US5580531A (en) * | 1995-06-07 | 1996-12-03 | Twenty-First Century Research Corporation | Devices for making reaction products by controlling transient conversion in an atomized liquid |
-
2001
- 2001-01-12 CN CN01806551A patent/CN1422324A/en active Pending
- 2001-01-12 WO PCT/US2001/001049 patent/WO2001051588A1/en not_active Application Discontinuation
- 2001-01-12 CN CN01806559A patent/CN1427877A/en active Pending
- 2001-01-12 WO PCT/US2001/001068 patent/WO2001051589A1/en active Search and Examination
- 2001-01-12 EP EP01942374A patent/EP1254197A1/en not_active Withdrawn
- 2001-01-12 AU AU2001229408A patent/AU2001229408A1/en not_active Abandoned
- 2001-01-12 CA CA002397555A patent/CA2397555A1/en not_active Abandoned
- 2001-01-12 AU AU2001230919A patent/AU2001230919A1/en not_active Abandoned
- 2001-01-12 CA CA002397566A patent/CA2397566A1/en not_active Abandoned
- 2001-01-12 EP EP01903049A patent/EP1257614A1/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10174569B2 (en) | 2013-06-20 | 2019-01-08 | Aspect International (2015) Private Limited | NMR/MRI-based integrated system for analyzing and treating of a drilling mud for drilling mud recycling process and methods thereof |
| US10598581B2 (en) | 2013-11-06 | 2020-03-24 | Aspect Imaging Ltd. | Inline rheology/viscosity, density, and flow rate measurement |
| US10670574B2 (en) | 2015-01-19 | 2020-06-02 | Aspect International (2015) Private Limited | NMR-based systems for crude oil enhancement and methods thereof |
| US10809338B2 (en) | 2015-04-12 | 2020-10-20 | Aspect Ai Ltd. | System and method for NMR imaging of fluids in non-circular cross-sectional conduits |
| US10444170B2 (en) | 2015-07-02 | 2019-10-15 | Aspect Ai Ltd. | System and method for analysis of fluids flowing in a conduit |
| CN106353355A (en) * | 2015-07-15 | 2017-01-25 | 艾斯拜克特国际（2015）私人有限公司 | NMR-based system for crude oil lifting, and method thereof |
| US10655996B2 (en) | 2016-04-12 | 2020-05-19 | Aspect Imaging Ltd. | System and method for measuring velocity profiles |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001051589A1 (en) | 2001-07-19 |
| AU2001229408A1 (en) | 2001-07-24 |
| AU2001230919A1 (en) | 2001-07-24 |
| EP1254197A1 (en) | 2002-11-06 |
| WO2001051589A8 (en) | 2002-02-21 |
| WO2001051588A1 (en) | 2001-07-19 |
| EP1257614A1 (en) | 2002-11-20 |
| CA2397566A1 (en) | 2001-07-19 |
| CN1422324A (en) | 2003-06-04 |
| WO2001051588A8 (en) | 2001-11-01 |
| CA2397555A1 (en) | 2001-07-19 |
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