CN116573843B - Annealing kiln capable of recycling waste heat - Google Patents
Annealing kiln capable of recycling waste heat Download PDFInfo
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- CN116573843B CN116573843B CN202310857670.4A CN202310857670A CN116573843B CN 116573843 B CN116573843 B CN 116573843B CN 202310857670 A CN202310857670 A CN 202310857670A CN 116573843 B CN116573843 B CN 116573843B
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- 239000002918 waste heat Substances 0.000 title claims abstract description 260
- 238000000137 annealing Methods 0.000 title claims abstract description 61
- 238000004064 recycling Methods 0.000 title claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 280
- 238000002156 mixing Methods 0.000 claims abstract description 61
- 238000011084 recovery Methods 0.000 claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims description 36
- 238000005265 energy consumption Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004088 simulation Methods 0.000 claims description 10
- 238000004422 calculation algorithm Methods 0.000 claims description 8
- 238000010801 machine learning Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000010248 power generation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 18
- 238000005338 heat storage Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000010795 gaseous waste Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application relates to an annealing kiln for recycling waste heat, which comprises an annealing kiln body, a waste heat recycling module and a waste heat controller, wherein the annealing kiln body is provided with a heat storage tank; the annealing kiln body comprises a plurality of working areas, and the waste heat recycling module is communicated with gas discharge ports of the working areas; the waste heat recycling module comprises a pipeline component for conveying high-temperature gas, a mixing component for mixing the collected high-temperature gas and a waste heat recycling component for recycling waste heat of the high-temperature gas, and variable-frequency traction fans are arranged at the joints of the pipeline component and a plurality of working areas; the waste heat controller obtains production plan to determine actual discharge information of the high-temperature gas, matches and generates a gas waste heat utilization scheme according to user waste heat recovery requirements, and controls the waste heat recycling module to collect the high-temperature gas discharged by the annealing kiln body according to the gas waste heat utilization scheme so as to carry out waste heat utilization. The application can realize the best waste heat utilization effect on the high-temperature gas.
Description
Technical Field
The application relates to the field of annealing kilns, in particular to an annealing kiln with waste heat recycling.
Background
The glass industry is a high energy consumption and high emission industry. There are a great deal of exhaust waste heat resources in the annealing kiln of one of three thermal equipment in the glass industry. During annealing, a large amount of heat energy is emitted from the glass, and the heat of the heat-preserving region is absorbed by the air in the cooling system, so that a high-temperature gas is formed. Taking 1000 tons/day glass production line as an example, the annual heat is about 8.2X10 13 The coke, 40% of which is the heat dissipation loss from the kiln body, 60% (4.9X10 a year) 13 Coke) is absorbed by the cooling system, thereby forming high temperature air. The heat is directly discharged into the atmosphere, 1600 tons of coal can be saved in one year, about one million tons of energy can be saved in one year, and the pollution of enterprises can be reduced if the heat can be used in heating and large-scale kilns.
However, there are three problems associated with recycling using high temperature gases. Firstly, the temperature of the gas exhausted by each zone of the annealing furnace is different due to the process requirement, but the cooling systems of each zone are often mutually independent, and the cooling systems of each zone are often required to be mutually connected when the high-temperature gas is required to be effectively utilized, so that the adjustment of any system can be necessarily caused to interfere with other systems, and the normal operation of the whole annealing furnace is affected. Secondly, the waste heat recovery equipment is usually far away from the annealing kiln, so that the hot air in the annealing kiln is required to be pressurized for the second time through a fan, and the situation that a set of exhaust system is arranged at the tail end of the annealing kiln is equal, and when the flow and the pressure of the fan are regulated, the cooling system of the annealing kiln is interfered, so that the work of the annealing kiln is influenced. And thirdly, the high-temperature gas waste heat utilization modes are various, so that the hot air can be directly utilized, the hot air can be conveniently utilized in northern areas, the hot air can be indirectly utilized, the application range is wider, and the hot air heating device can be used for heating, refrigerating, domestic hot water and process humidification in production lines. Therefore, on the basis of ensuring the stable operation of the annealing kiln, the method for stably collecting the high-temperature gas and reasonably distributing and utilizing the high-temperature gas to realize the optimal utilization effect is also a technical problem to be solved.
Disclosure of Invention
The application provides an annealing kiln capable of recycling waste heat, which aims to solve the problems that an existing annealing kiln waste heat recycling system is unstable, cannot collect high-temperature gas stably, lacks reasonable distribution of the high-temperature gas and is poor in energy-saving effect of waste heat utilization.
In a first aspect, the application provides an annealing kiln for recycling waste heat, which adopts the following technical scheme:
an annealing kiln for recycling waste heat comprises an annealing kiln body, a waste heat recycling module and a waste heat controller; the annealing kiln body comprises a plurality of working areas, and the waste heat recycling module is communicated with gas discharge ports of the working areas; the waste heat recycling module comprises a pipeline assembly for conveying high-temperature gas, a gas mixing assembly for mixing the collected high-temperature gas and a waste heat utilization assembly for utilizing waste heat of the high-temperature gas, wherein the gas mixing assembly is communicated with the annealing kiln body and the waste heat utilization assembly through the pipeline assembly, and variable frequency traction fans are arranged at the joints of the pipeline assembly and a plurality of working areas; the waste heat controller obtains production plan to determine actual discharge information of the high-temperature gas, matches and generates a gas waste heat utilization scheme according to user waste heat recovery requirements, and controls the waste heat recycling module to collect the high-temperature gas discharged by the annealing kiln body according to the gas waste heat utilization scheme so as to carry out waste heat utilization.
Preferably, the gas mixing assembly comprises a tank body and a plurality of electric sealing doors, a gas mixing cavity is arranged in the tank body, the electric sealing doors are sequentially arranged in the gas mixing cavity along the vertical direction to separate the gas mixing cavity into a plurality of mixing subchambers, a plurality of groups of gas conveying pipe groups are arranged in the tank body through the pipeline assembly, and the gas conveying pipe groups are respectively arranged in the mixing subchambers.
Preferably, the gas delivery pipe group comprises a plurality of gas delivery branch pipes, a plurality of gas delivery branch pipes are wound to form a bundle, and the gas outlet end parts of the plurality of gas delivery branch pipes are arranged obliquely to each other.
Preferably, the waste heat utilization component comprises one or more of a waste heat steam power generation device, a waste heat exchange waterway heating device, a waste heat heating device and a waste heat combustion-supporting device.
Preferably, the method for obtaining the production plan to determine the actual emission information of the high-temperature gas by the waste heat controller specifically comprises the following steps:
the waste heat controller acquires a production plan of the next production cycle;
determining high-temperature gas emission details of each working area of the annealing kiln according to a production plan, wherein the high-temperature gas emission details comprise high-temperature gas emission flow information, high-temperature gas temperature information and high-temperature gas emission total amount information;
acquiring position information of a factory building and air temperature information in a production period in real time, and simulating and determining actual high-temperature gas emission information of a production plan through a preset gas simulation model according to high-temperature gas emission details, factory building position information and air temperature information in the production period; the gas simulation model is formed by training a machine learning model through historical data of each season; the high-temperature gas actual emission information comprises the emission flow, the actual temperature and the emission total amount of mixed gas generated after the high-temperature gas emitted by each working area is mixed in the gas mixing assembly.
Preferably, the waste heat controller matches the generated gas waste heat utilization scheme according to the user waste heat recovery requirement, and specifically comprises the following steps:
the waste heat controller obtains a user waste heat recovery requirement in the next growth period, wherein the user waste heat recovery requirement comprises at least one energy saving requirement;
determining corresponding waste heat recovery devices in the waste heat utilization assembly based on the waste heat recovery requirement of a user, and acquiring process flow information of each waste heat recovery device, wherein the process flow information comprises required gas temperature information and exhaust gas temperature information;
drawing a gas change table according to process flow information of various waste heat recovery devices in the waste heat utilization assembly, wherein the gas change table comprises gas heat utilization ranges of the various waste heat recovery devices;
generating a gas waste heat utilization scheme by matching a preset scheme matching model based on the actual emission information of the high-temperature gas and the waste heat recovery requirement of a user, wherein the scheme matching model is formed by training and iterating historical data for a machine learning model based on a dynamic programming algorithm; the waste heat utilization scheme comprises a gas recovery control parameter, at least one waste heat utilization device control parameter and process flow information.
Preferably, the gas waste heat utilization scheme generated by matching the actual emission information of the high-temperature gas and the waste heat recovery requirement of the user through a preset scheme matching model specifically comprises the following steps:
each energy-saving requirement in the waste heat recovery requirements of the user is respectively ordered based on energy consumption, cost saving and life production requirement level, and an energy consumption sequence, a cost saving sequence and a requirement level sequence are generated; generating energy consumption sequence scores, cost saving sequence scores and demand grade sequence scores of all energy saving demands through a preset sequence score comparison table; wherein the life production demand level of each energy-saving demand is set by a manager;
acquiring energy-saving preference of a user, taking any sequence as a highest priority sequence based on the energy-saving preference of the user, and taking the rest sequences as secondary priority sequences;
calculating the energy-saving scoring value of each energy-saving requirement through a preset energy-saving scoring calculation formula;
the scheme matching model generates a gas waste heat utilization scheme with the maximum energy-saving demand quantity and the highest sum of the energy-saving scoring values under the same energy-saving demand quantity through a dynamic programming algorithm programming rule based on the actual emission information of the high-temperature gas and the energy-saving scoring values of all the energy-saving demands.
Preferably, the user can set any energy-saving requirement as a necessary energy-saving requirement when inputting the user waste heat recovery requirement, and the scheme matching model plans to generate a gas waste heat utilization scheme on the basis of completing the necessary energy-saving requirement.
Preferably, the waste heat controller controls the waste heat recycling module to collect the high-temperature gas exhausted by the annealing kiln body for waste heat utilization according to a gas waste heat utilization scheme, and the method specifically comprises the following steps of:
the waste heat controller sets and updates parameters of the waste heat recycling module according to the gas recovery control parameters and the waste heat utilization device control parameters;
the waste heat controller adjusts the power of each variable-frequency traction fan based on the process flow information, and high-temperature gas discharged from each working area of the annealing kiln is drawn and collected into the gas mixing assembly through the pipeline assembly for gas mixing;
and the waste heat controller sequentially conveys the mixed gas to the waste heat utilization device for waste heat utilization according to the process flow information.
Preferably, the gas outlet end portions of the plurality of gas delivery branch pipes are inclined at an angle of 15 ° to 75 °.
In summary, the present application includes at least one of the following beneficial technical effects:
the method comprises the steps of determining actual discharge information of high-temperature gas based on production plan simulation through the arrangement of a waste heat recycling module and a waste heat controller, then matching and generating a gas waste heat utilization scheme according to user waste heat recovery requirements, and then stably collecting, conveying, mixing and waste heat utilization of high-temperature gas discharged from each working area of an annealing kiln body according to the gas waste heat utilization scheme, so that the gas waste heat utilization scheme is intelligently planned according to actual production conditions of factories, the gas is efficiently collected, the user requirements are met as much as possible, reasonable distribution of the high-temperature gas is realized on the basis of meeting the user interests, the optimal waste heat utilization effect of the high-temperature gas is achieved, manpower and material resources are saved, and the green environment-friendly effect is achieved;
determining a waste heat utilization device required by meeting energy-saving requirements based on user requirements, further determining requirements and output of the waste heat utilization device according to the process flow of the waste heat utilization device, further drawing a gas change table, further helping to more intuitively know the requirements and output of the waste heat utilization device, traversing a waste gas utilization scheme based on a dynamic programming algorithm through a scheme matching model, and finally selecting the waste heat utilization scheme which can best meet the user requirements, so that reasonable distribution and full waste heat utilization of produced high-temperature gas are realized, the optimal waste heat utilization effect of the high-temperature gas is achieved, manpower and material resources are saved, and the environment-friendly effect is achieved;
the gas conveying branch pipes of the same gas conveying pipe group are mutually wound, so that the gas starts to exchange heat in advance after being conveyed into the mixing subchamber, and the gas outlet end parts of the gas conveying branch pipes are mutually inclined, so that weak opposite impact is formed when the gas conveyed by the gas conveying branch pipes enters the mixing subchamber, and the mixing soaking of high-temperature gas is facilitated.
Drawings
FIG. 1 is a system block diagram of an annealing furnace for waste heat recycling in an embodiment of the application;
FIG. 2 is a schematic cross-sectional view of a gas mixing assembly in accordance with an embodiment of the application;
FIG. 3 is a schematic view of a gas delivery tube group in accordance with an embodiment of the present application;
FIG. 4 is a flow chart of a method for determining the actual emission information of the high-temperature gas by the waste heat controller in the embodiment of the application;
FIG. 5 is a flow chart of a method for generating a gas waste heat utilization scheme by matching a waste heat controller in an embodiment of the application;
FIG. 6 is a flow chart of a method for generating a gas waste heat utilization scheme by scheme matching model matching in an embodiment of the application;
FIG. 7 is a flow chart of a method for utilizing waste heat of high temperature gas by the waste heat controller in an embodiment of the application.
Reference numerals illustrate: 1. annealing kiln body; 11. a working area; 2. a waste heat recycling module; 21. a pipeline assembly; 211. variable frequency traction fan; 22. a gas mixing assembly; 221. a tank body; 222. an electric closing door; 223. a gas mixing chamber; 224. a mixing subchamber; 225. a gas delivery tube group; 226. a gas delivery manifold; 23. a waste heat utilization assembly; 3. and the waste heat controller.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses an annealing kiln capable of recycling waste heat. Referring to fig. 1 and 2, an annealing lehr for waste heat recycling includes an annealing lehr body 1, a waste heat recycling module 2, and a waste heat controller 3. The annealing kiln body 1 comprises a plurality of working areas 11, and the waste heat recycling module 2 is communicated with gas discharge ports of the working areas 11. The waste heat recycling module 2 includes a pipe assembly 21 for transporting high temperature gas, a gas mixing assembly 22 for mixing the collected high temperature gas, and a waste heat utilization assembly 23 for waste heat utilization of the high temperature gas. The gas mixing assembly 22 is communicated with the annealing kiln body 1 and the waste heat utilization assembly 23 through the pipeline assembly 21, and a variable frequency traction fan 211 is arranged at the joint of the pipeline assembly 21 and the plurality of working areas 11. The waste heat controller 3 obtains production plan to determine actual discharge information of the high-temperature gas, matches and generates a gas waste heat utilization scheme according to user waste heat recovery requirements, and controls the waste heat recycling module 2 to collect the high-temperature gas discharged by the annealing kiln body 1 according to the gas waste heat utilization scheme so as to perform waste heat utilization. Through the setting of waste heat cyclic utilization module 2 and waste heat controller 3, based on the actual emission information of production plan simulation confirm high temperature gas and then match and generate gaseous waste heat utilization scheme according to user's waste heat recovery demand, carry out stable collection, transportation, mixing and waste heat utilization to each work area 11 exhaust high temperature gas of annealing kiln body 1 according to gaseous waste heat utilization scheme again, realize according to the gaseous waste heat utilization scheme of mill actual production condition intelligent planning, realize collecting the gas high efficiency and satisfy the user's demand as far as possible, on the basis of meeting the user's demand, with realizing reasonable distribution to high temperature gas, reach the best waste heat utilization's of high temperature gas effect, practice thrift manpower and materials, reach green's effect.
Referring to fig. 1 and 2, the gas mixing assembly 22 includes a tank 221 and a plurality of electric closing doors 222, a gas mixing chamber 223 is provided in the tank 221, the plurality of electric closing doors 222 are sequentially provided in the gas mixing chamber 223 along a vertical direction to divide the gas mixing chamber 223 into a plurality of mixing sub-chambers 224, the pipe assembly 21 is provided with a plurality of groups of gas delivery pipe groups 225 in the tank 221, and the plurality of groups of gas delivery pipe groups 225 are respectively provided in the plurality of mixing sub-chambers 224. Through setting up a plurality of electronic closing door 222 in jar body 221, realize separating into a plurality of mixing subchamber 224 with the gas mixing chamber 223 in the jar body 221 to draw forth multiunit gas delivery nest 225 and set up respectively in each mixing subchamber 224 from pipeline subassembly 21, the waste heat controller 3 of being convenient for is opened corresponding quantity as mixing subchamber 224 according to the actual discharge flow of high temperature gas, avoids because the excessive phenomenon of heat loss appears when the gas mixing is caused to the too big volume of gas mixing chamber 223. In addition, the pipeline assembly 21 is arranged to realize gas collection and transportation, which is common equipment in the field of high-temperature gas waste heat recovery, and the concrete arrangement mode of the pipeline is that the prior art is not repeated here, and the pipeline can be arranged according to the actual distribution condition of the equipment.
Referring to fig. 1 and 3, the gas delivery tube group 225 includes a plurality of gas delivery branch pipes 226, the plurality of gas delivery branch pipes 226 are wound in a bundle, and gas outlet end portions of the plurality of gas delivery branch pipes 226 are disposed obliquely to each other. The gas outlet ends of the plurality of gas delivery manifold 226 are inclined at an angle of 15 deg. -75 deg.. The gas delivery branch pipes 226 of the same gas delivery pipe group 225 are mutually wound, so that the gas starts to exchange heat after being delivered into the mixing subchamber 224, and the gas outlet end parts of the gas delivery branch pipes 226 are mutually inclined, so that weak opposite impact is formed when the gas delivered by the gas delivery branch pipes 226 enters the mixing subchamber 224, and the mixed soaking of high-temperature gas is facilitated.
The waste heat utilization assembly 23 comprises one or more of a waste heat steam power generation device, a waste heat exchange waterway heating device, a waste heat heating device and a waste heat combustion-supporting device. It should be noted that the waste heat steam power generation device, the waste heat exchange waterway heating device, the waste heat heating device and the waste heat combustion-supporting device are only generic terms of classification of various waste heat utilization devices according to purposes, and specific structures thereof are not described in detail in the prior art.
Referring to fig. 4, the method for obtaining production schedule determination high temperature gas actual emission information by the waste heat controller 3 specifically includes the steps of:
a1, a waste heat controller 3 acquires a production plan of the next production cycle;
a2, determining high-temperature gas emission details of each working area 11 of the annealing kiln: determining high-temperature gas emission details of each working area 11 of the annealing kiln according to a production plan, wherein the high-temperature gas emission details comprise high-temperature gas emission flow information, high-temperature gas temperature information and high-temperature gas emission total amount information;
a3, simulating and determining actual high-temperature gas emission information of a production plan through a preset gas simulation model: acquiring position information of a factory building and air temperature information in a production period in real time, and simulating and determining actual high-temperature gas emission information of a production plan through a preset gas simulation model according to high-temperature gas emission details, factory building position information and air temperature information in the production period; the gas simulation model is formed by training a machine learning model through historical data of each season; the specific training steps of the machine learning model are the prior art and are not described in detail herein; the high-temperature gas actual discharge information includes the discharge flow rate, actual temperature, and total discharge amount of the mixed gas generated after the high-temperature gas discharged from each working area 11 is mixed in the gas mixing assembly 22. According to the high-temperature gas emission details of each working area 11 of the annealing kiln under the production plan accounting and calibration conditions, the setting of a gas simulation model is used, the actual production data of factories are combined, the production and high-temperature gas emission processes and the gas collection mixing conditions are simulated, the emission flow, the actual temperature and the emission total amount of mixed gas generated after the high-temperature gas emitted by each working area 11 is mixed in the gas mixing assembly 22 are determined, the accurate accounting of the actual high-temperature gas emission information of the annealing kiln in the next production period is facilitated, the reasonable planning of the generation of a gas waste heat utilization scheme is facilitated, the reasonable distribution and the full waste heat utilization of the produced high-temperature gas are realized, the optimal waste heat utilization effect of the high-temperature gas is achieved, the manpower and material resources are saved, and the green and environment-friendly effect is achieved.
Referring to fig. 5, the waste heat controller 3 matches the generated gas waste heat utilization scheme according to the user waste heat recovery requirement, specifically includes the following steps:
b1, obtaining the waste heat recovery requirement of a user in the next growth period: the waste heat controller 3 obtains the user waste heat recovery requirement in the next growth period, wherein the user waste heat recovery requirement comprises at least one energy saving requirement;
b2, obtaining process flow information of each waste heat recovery device: determining corresponding waste heat recovery devices in the waste heat utilization assembly 23 based on the waste heat recovery requirements of users, and acquiring process flow information of each waste heat recovery device, wherein the process flow information comprises required gas temperature information and exhaust gas temperature information;
b3, drawing a gas change table: drawing a gas change table according to process flow information of various waste heat recovery devices in the waste heat utilization assembly 23, wherein the gas change table comprises gas heat utilization ranges of the various waste heat recovery devices;
and B4, generating a gas waste heat utilization scheme through matching of a preset scheme matching model: generating a gas waste heat utilization scheme by matching a preset scheme matching model based on the actual emission information of the high-temperature gas and the waste heat recovery requirement of a user, wherein the scheme matching model is formed by constructing a machine learning model based on a dynamic programming algorithm and training and iterating through historical data; the waste heat utilization scheme comprises a gas recovery control parameter, at least one waste heat utilization device control parameter and process flow information. The waste heat utilization device needed for meeting the energy-saving requirement is determined based on the user requirement, the requirement and the output of the waste heat utilization device are determined according to the process flow of the waste heat utilization device, the gas change table is drawn, the requirement and the output of the waste heat utilization device are more intuitively known, finally, the waste heat utilization scheme which can meet the user requirement is selected based on the dynamic programming algorithm through the scheme matching model, the reasonable distribution and the full waste heat utilization of the produced high-temperature gas are realized, the optimal waste heat utilization effect of the high-temperature gas is achieved, manpower and material resources are saved, and the green and environment-friendly effect is achieved.
Referring to fig. 6, the gas waste heat utilization scheme generated by matching the preset scheme matching model based on the actual emission information of the high-temperature gas and the waste heat recovery requirement of the user specifically comprises the following steps:
and C1, grading the sequencing of each energy-saving requirement: each energy-saving requirement in the waste heat recovery requirements of the user is respectively ordered based on energy consumption, cost saving and life production requirement level, and an energy consumption sequence, a cost saving sequence and a requirement level sequence are generated; generating energy consumption sequence scores, cost saving sequence scores and demand grade sequence scores of all energy saving demands through a preset sequence score comparison table; wherein the life production demand level of each energy-saving demand is set by a manager;
c2, determining the highest priority sequence: acquiring energy-saving preference of a user, taking any sequence as a highest priority sequence based on the energy-saving preference of the user, and taking the rest sequences as secondary priority sequences;
and C3, calculating energy-saving scoring values of the energy-saving requirements: calculating the energy-saving scoring value of each energy-saving requirement through a preset energy-saving scoring calculation formula;
and C4, generating a gas waste heat utilization scheme by using scheme matching model rules: the scheme matching model generates a gas waste heat utilization scheme with the maximum energy-saving demand quantity and the highest sum of the energy-saving scoring values under the same energy-saving demand quantity through a dynamic programming algorithm programming rule based on the actual emission information of the high-temperature gas and the energy-saving scoring values of all the energy-saving demands. The method comprises the steps of sorting energy consumption, cost saving and life production demand grades of each energy-saving demand based on the normal condition, catering to the energy-saving demand of a user on the basis of accurately calculating the energy-saving score of each energy-saving demand, traversing to generate various gas waste heat utilization schemes based on the actual high-temperature gas emission information and the energy-saving score value of each energy-saving demand through a scheme matching model, selecting the gas waste heat utilization scheme with the highest sum of the energy-saving score values on the basis of selecting the gas waste heat utilization scheme with the largest energy-saving demand, realizing the intelligent accurate generation of the gas waste heat utilization scheme, saving manpower and material resources, reasonably distributing and fully utilizing waste heat of produced high-temperature gas, achieving the best waste heat utilization effect of the high-temperature gas, saving manpower and material resources and achieving the effect of green and environment protection.
The preset energy-saving score calculation formula specifically comprises the following steps:
；
wherein the method comprises the steps ofEnergy saving scoring for the ith energy saving demand;scoring the highest priority sequence of the ith energy saving demand;sum of the sub-priority sequence scores for the ith energy saving requirement;scoring coefficients for the highest priority sequences;scoring coefficients for the sub-priority sequences; and is also provided withAndare set by the manager.
In addition, a user can set any energy-saving requirement as a necessary energy-saving requirement when inputting the user waste heat recovery requirement, and the scheme matching model plans to generate a gas waste heat utilization scheme on the basis of completing the necessary energy-saving requirement. Further realizes personalized scientific customized gas waste heat utilization scheme.
Referring to fig. 7, the waste heat controller 3 controls the waste heat recycling module 2 to collect the high temperature gas discharged from the annealing furnace body 1 according to the gas waste heat utilization scheme to perform the waste heat utilization, specifically including the steps of:
d1, parameter setting and updating are carried out on the waste heat recycling module 2: the waste heat controller 3 performs parameter setting and updating on the waste heat recycling module 2 according to the gas recovery control parameter and the waste heat utilization device control parameter;
d2, collecting high-temperature gas into the gas mixing assembly 22 for gas mixing: the waste heat controller 3 adjusts the power of each variable frequency traction fan 211 based on the process flow information, and the high-temperature gas discharged by each working area 11 of the annealing kiln is drawn and collected into the gas mixing assembly 22 through the pipeline assembly 21 for gas mixing;
the waste heat controller 3 obtains the high-temperature gas discharge flow conditions of each working area 11 in real time through the gas discharge ports of each working area 11 preset in the annealing kiln body 1, and then dynamically adjusts the variable-frequency traction fan 211;
d3, sequentially conveying the mixed gas to a waste heat utilization device for waste heat utilization: the waste heat controller 3 sequentially conveys the mixed gas to the waste heat utilization device for waste heat utilization according to the technological process information. In addition, the waste heat controller 3 determines the flow rate of the high-temperature gas based on a gas waste heat utilization scheme, further determines the space required by gas mixing, controls the opening and closing of the electric telescopic door, and further opens up a plurality of mixing subchambers 224. Through the steps, the high-temperature gas exhausted by the annealing kiln is reasonably distributed and fully utilized, the optimal waste heat utilization effect of the high-temperature gas is achieved, manpower and material resources are saved, and the environment-friendly effect is achieved.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the scope of the present application. It will be apparent that the described embodiments are merely some, but not all, embodiments of the application. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present application or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present application, which also falls within the scope of the present application.
Claims (6)
1. An annealing kiln for recycling waste heat, which is characterized in that: comprises an annealing kiln body (1), a waste heat recycling module (2) and a waste heat controller (3); the annealing kiln body (1) comprises a plurality of working areas (11), and the waste heat recycling module (2) is communicated with gas discharge ports of the working areas (11); the waste heat recycling module (2) comprises a pipeline assembly (21) for conveying high-temperature gas, a gas mixing assembly (22) for mixing the collected high-temperature gas and a waste heat utilization assembly (23) for utilizing waste heat of the high-temperature gas, the gas mixing assembly (22) is communicated with the annealing kiln body (1) and the waste heat utilization assembly (23) through the pipeline assembly (21), and variable-frequency traction fans (211) are arranged at the joints of the pipeline assembly (21) and a plurality of working areas (11); the waste heat controller (3) acquires production plan to determine actual discharge information of the high-temperature gas, a gas waste heat utilization scheme is generated by matching according to the waste heat recovery requirement of a user, and the waste heat recycling module (2) is controlled to collect the high-temperature gas discharged by the annealing kiln body (1) according to the gas waste heat utilization scheme so as to perform waste heat utilization;
the gas mixing assembly (22) comprises a tank body (221) and a plurality of electric sealing doors (222), wherein a gas mixing cavity (223) is formed in the tank body (221), the electric sealing doors (222) are sequentially arranged in the gas mixing cavity (223) along the vertical direction to divide the gas mixing cavity (223) into a plurality of mixing subchambers (224), a plurality of groups of gas conveying pipe groups (225) are arranged in the tank body (221) by the pipeline assembly (21), and the groups of gas conveying pipe groups (225) are respectively arranged in the plurality of mixing subchambers (224);
the gas delivery pipe group (225) comprises a plurality of gas delivery branch pipes (226), wherein the plurality of gas delivery branch pipes (226) are wound into a bundle, and the gas outlet end parts of the plurality of gas delivery branch pipes (226) are arranged obliquely to each other;
the waste heat controller (3) acquires production plan to determine actual discharge information of the high-temperature gas, and specifically comprises the following steps:
the waste heat controller (3) acquires a production plan of the next production cycle;
determining high-temperature gas emission details of each working area (11) of the annealing kiln according to a production plan, wherein the high-temperature gas emission details comprise high-temperature gas emission flow information, high-temperature gas temperature information and high-temperature gas emission total amount information;
acquiring position information of a factory building and air temperature information in a production period in real time, and simulating and determining actual high-temperature gas emission information of a production plan through a preset gas simulation model according to high-temperature gas emission details, factory building position information and air temperature information in the production period; the gas simulation model is formed by training a machine learning model through historical data of each season; the high-temperature gas actual emission information comprises the emission flow, the actual temperature and the emission total amount of mixed gas generated after the high-temperature gas emitted by each working area (11) is mixed in the gas mixing assembly (22);
the waste heat controller (3) is matched with the generated gas waste heat utilization scheme according to the waste heat recovery requirement of a user, and specifically comprises the following steps:
the waste heat controller (3) obtains the waste heat recovery requirement of a user in the next production period, wherein the waste heat recovery requirement of the user comprises at least one energy-saving requirement;
determining corresponding waste heat recovery devices in the waste heat utilization assembly (23) based on the waste heat recovery requirements of users, and acquiring process flow information of each waste heat recovery device, wherein the process flow information comprises required gas temperature information and exhaust gas temperature information;
drawing a gas change table according to process flow information of various waste heat recovery devices in the waste heat utilization assembly (23), wherein the gas change table comprises gas heat utilization ranges of the various waste heat recovery devices;
generating a gas waste heat utilization scheme by matching a preset scheme matching model based on the actual emission information of the high-temperature gas and the waste heat recovery requirement of a user, wherein the scheme matching model is formed by training and iterating historical data for a machine learning model based on a dynamic programming algorithm; the waste heat utilization scheme comprises a gas recovery control parameter, at least one waste heat recovery device control parameter and process flow information.
2. An annealing furnace for recycling waste heat according to claim 1, wherein: the waste heat utilization assembly (23) comprises one or more of a waste heat steam power generation device, a waste heat exchange waterway heating device, a waste heat heating device and a waste heat combustion-supporting device.
3. The annealing furnace for recycling waste heat according to claim 1, wherein the gas waste heat utilization scheme generated by matching the actual emission information of the high-temperature gas and the waste heat recovery requirement of the user through a preset scheme matching model specifically comprises the following steps:
each energy-saving requirement in the waste heat recovery requirements of the user is respectively ordered based on energy consumption, cost saving and life production requirement level, and an energy consumption sequence, a cost saving sequence and a requirement level sequence are generated; generating energy consumption sequence scores, cost saving sequence scores and demand grade sequence scores of all energy saving demands through a preset sequence score comparison table; wherein the life production demand level of each energy-saving demand is set by a manager;
acquiring energy-saving preference of a user, taking any sequence as a highest priority sequence based on the energy-saving preference of the user, and taking the rest sequences as secondary priority sequences;
calculating the energy-saving scoring value of each energy-saving requirement through a preset energy-saving scoring calculation formula;
the scheme matching model generates a gas waste heat utilization scheme with the maximum energy-saving demand quantity and the highest sum of the energy-saving scoring values under the same energy-saving demand quantity through a dynamic programming algorithm programming rule based on the actual emission information of the high-temperature gas and the energy-saving scoring values of all the energy-saving demands.
4. An annealing furnace for recycling waste heat according to claim 1, wherein: the user can set any energy-saving requirement as a necessary energy-saving requirement when inputting the user waste heat recovery requirement, and the scheme matching model plans to generate a gas waste heat utilization scheme on the basis of completing the necessary energy-saving requirement.
5. The annealing furnace for waste heat recycling according to claim 1, wherein the waste heat controller (3) controls the waste heat recycling module (2) to collect the high-temperature gas discharged from the annealing furnace body (1) for waste heat recycling according to a gas waste heat utilization scheme, and the method specifically comprises the following steps:
the waste heat controller (3) sets and updates parameters of the waste heat recycling module (2) according to the gas recycling control parameters and the waste heat recycling device control parameters;
the waste heat controller (3) adjusts the power of each variable-frequency traction fan (211) based on the process flow information, and high-temperature gas discharged by each working area (11) of the annealing kiln is drawn and collected into a gas mixing assembly (22) through a pipeline assembly (21) for gas mixing;
and the waste heat controller (3) sequentially conveys the mixed gas to the waste heat recovery device for waste heat utilization according to the technological process information.
6. An annealing furnace for recycling waste heat according to claim 1, wherein: the gas outlet ends of the plurality of gas delivery manifolds (226) are inclined at an angle of 15 ° -75 °.
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