WO2019144523A1 - 一种多工序烟气净化系统及其控制方法 - Google Patents

一种多工序烟气净化系统及其控制方法 Download PDF

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Publication number
WO2019144523A1
WO2019144523A1 PCT/CN2018/083579 CN2018083579W WO2019144523A1 WO 2019144523 A1 WO2019144523 A1 WO 2019144523A1 CN 2018083579 W CN2018083579 W CN 2018083579W WO 2019144523 A1 WO2019144523 A1 WO 2019144523A1
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activated carbon
flue gas
gas purification
flow rate
subsystem
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PCT/CN2018/083579
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English (en)
French (fr)
Chinese (zh)
Inventor
叶恒棣
刘雁飞
魏进超
刘昌齐
傅旭明
杨本涛
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中冶长天国际工程有限责任公司
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Priority to MYPI2020002559A priority Critical patent/MY193803A/en
Priority to BR112020011458-8A priority patent/BR112020011458A2/pt
Priority to RU2020122728A priority patent/RU2762190C1/ru
Priority to KR1020207012434A priority patent/KR102343392B1/ko
Publication of WO2019144523A1 publication Critical patent/WO2019144523A1/zh
Priority to PH12020550665A priority patent/PH12020550665A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B01D53/08—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds according to the "moving bed" method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B01D53/10—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents
    • B01D53/12—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents according to the "fluidised technique"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/402—Dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/025—Other waste gases from metallurgy plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40084—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by exchanging used adsorbents with fresh adsorbents
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)

Definitions

  • the present application relates to the field of gas purification technologies, and in particular, to a multi-process flue gas purification system and a control method thereof.
  • Iron and steel enterprises are the pillars of the entire national economy. However, while making important contributions to economic development, they are also accompanied by serious pollution problems.
  • smoke emissions such as sintering, pelletizing, coking, iron making, steel making and steel rolling.
  • the flue gas emitted in each process contains a large amount of dust, SO 2 and NO X. Contaminants. When polluted smoke is emitted into the atmosphere, it not only pollutes the environment, but also poses a threat to human health.
  • the flue gas purification device contains a material having an adsorption function (for example, activated carbon) to adsorb flue gas, so as to purify the flue gas discharged from each process.
  • adsorption function for example, activated carbon
  • the activated carbon flue gas purification technology of the existing steel enterprises is applied in the flue gas purification system, and the flue gas purification system includes the flue gas purifying device 1 installed in each process, and several activated carbon analytical activation subsystems 2, each of which is activated and deactivated by activated carbon.
  • the subsystems 2 are respectively in communication with each of the flue gas cleaning devices 1 via respective activated carbon delivery subsystems 3.
  • the activated carbon flue gas purification device 1 includes a feeding device 11 , an adsorption tower 12 , a discharging device 13 , a buffer silo 14 and a discharging device 15 ;
  • the activated carbon analytical activation subsystem 2 includes a buffer chamber 21 and a feeding material.
  • the activated carbon enters the adsorption tower 12 from the feeding device 11, and an activated carbon layer is formed in the adsorption tower 12.
  • the raw flue gas 17 containing the pollutants also continuously enters the adsorption tower 12, and the original flue gas 17 After the pollutants are adsorbed by the activated carbon in the adsorption tower 12, the clean flue gas 16 is discharged.
  • the contaminated activated carbon adsorbed with the pollutants is discharged to the buffer silo 14 through the discharging device 13, and discharged to the activated carbon conveying subsystem 3 by the discharging device 15 disposed under the buffer silo 14, and the activated carbon conveying subsystem 3
  • the contaminated activated carbon is transported to the buffer chamber 21 of the corresponding activated carbon analytical activation subsystem 2, and the contaminated activated carbon is released into the analytical tower 23 by the feeding device 22 disposed under the buffer chamber 21, and the clean activated carbon obtained by the analytical activation treatment is discharged.
  • Device 24 is discharged.
  • the activated carbon conveying subsystem 3 transports the clean activated carbon to the feeding device 11 of the corresponding flue gas purifying device 1, and enters the adsorption tower 12 again to purify the flue gas, thereby realizing the flue gas purifying device 1 and the activated carbon analytical activation subsystem 2
  • the flue gas purification treatment of one and the recycling of activated carbon is a flue gas purification treatment of one and the recycling of activated carbon.
  • each flue gas emission process in the iron and steel enterprise is provided with a set of flue gas purification device and a set of activated carbon analytical activation subsystem, and multiple flue gas purification devices and activated carbon analytical activation subsystem work simultaneously to achieve Purification of contaminated flue gas produced in each process.
  • different scale processes need to set up a scale-matched flue gas purification device, resulting in the flue gas set in the steel enterprise.
  • an independent activated carbon analytical activation subsystem is arranged, which leads to an excessive number of activated carbon analytical activation subsystems in the steel enterprise, which makes the overall structure of the flue gas purification system in the steel enterprise complex, and each process The generated flue gas is treated separately, resulting in a low efficiency of the flue gas purification system. Therefore, how to provide a flue gas purification system capable of efficiently treating flue gas has become an urgent problem to be solved in the art.
  • the present application provides a multi-process flue gas purification system and a control method thereof to solve the problem of low operating efficiency of the existing flue gas purification system.
  • the present application provides a multi-process flue gas purification system, comprising: an activated carbon centralized analytical activation subsystem, an activated carbon delivery subsystem, and a flue gas purification device corresponding to each process, and each of the flue gas purification devices respectively Connected to the activated carbon centralized analytical activation subsystem through the activated carbon transport subsystem;
  • the activated carbon centralized analytical activation subsystem comprises an analytical tower, a feeding device for controlling the flow rate of the contaminated activated carbon entering the analytical tower, and a discharging device for discharging the activated activated carbon in the analytical tower after the activation treatment, for the purpose of a screening device for screening activated activated carbon discharged from a discharge device for collecting activated activated carbon activated carbon obtained by the screening device, and providing an outlet end of the flue gas purification device corresponding to each process and a feeding device a total activated carbon cartridge between the total activated carbon cartridge for collecting the polluted activated carbon discharged from the flue gas purification device in each process, and a belt scale disposed between the total activated carbon cartridge and the feeding device, the belt scale being used for
  • the contaminated activated carbon in the total activated carbon storage tank is sent to the analytical tower, and a new activated carbon replenishing device is disposed above the total activated carbon storage tank, and the new activated carbon replenishing device is used to replenish the activated carbon in the total activated
  • the method further includes: a flue gas purification device corresponding to a sintering process of the activated carbon concentration analysis activation subsystem, and a material distribution device located below the activated activated carbon cartridge; and the flue gas purification device corresponding to the sintering process
  • the polluted activated carbon is sent to the analytical tower through the activated carbon conveying subsystem and the feeding device;
  • the materializing device includes a step n discharging device for distributing activated carbon for each step, and a sintering step discharging device for distributing activated carbon for the sintering step.
  • an embodiment of the present application provides a method for controlling a multi-process flue gas purification system, including the following steps:
  • the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t is determined;
  • the activated carbon circulation flow rate W Xn(tni) of the flue gas purification device in the step n corresponding to the time t ni is determined according to the following steps:
  • W Sn(tni) is the total flow rate of SO 2 in the raw flue gas corresponding to the step n at time t ni , in units of kg/h
  • W Nn(tni) is the original flue gas corresponding to the step n at time t ni the total NO X flow rate, the unit kg / h
  • W Xn(tni) K 1 ⁇ W Sn(tni) + K 2 ⁇ W Nn(tni) ;
  • W Xn(tni) is the circulating flow rate of activated carbon at t ni time corresponding to the flue gas purification device in process n, unit kg/h; K 1 is the first coefficient, and the value ranges from 15 to 21; K 2 is the first The two coefficients are in the range of 3 to 5.
  • the activated carbon circulating flow W X0 of the activated carbon concentration analysis activation subsystem corresponding to the current time t is determined according to the following steps:
  • the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t is determined;
  • t is the current time
  • T ni is the time during which the polluted activated carbon corresponding to the flue gas purification device in step n is transported to the activated carbon concentration analysis activation subsystem.
  • the activated carbon circulating flow W X0 of the activated carbon concentration analysis activation subsystem corresponding to the current time t is determined according to the following steps:
  • the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n the supplementary flow rate W complement , and the following formula, determining the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t;
  • W X0 ⁇ W Xn(t-Tni)+ W complement .
  • the activated carbon loading amount Q 0 of the analytical tower in the activated carbon centralized analytical activation subsystem is determined;
  • Controlling said supplementary GAC GAC supplementary replenishing device activated charcoal loss quantity Q and complement loss quantity Q is equal to, activated carbon supplementary quantity Q adjusted up, new activated carbon per unit time determines supplementary device makeup flow W Make up .
  • the given frequency f g of the feeding device in the activated carbon concentration analysis activation subsystem and the given frequency f p of the discharging device are adjusted according to the operating frequency f c of the belt weigher according to the following steps:
  • the relationship between the given frequency f g of the feeding device and the operating frequency f c of the belt weigher is obtained: Adjusting the given frequency f g of the feeding device according to the above formula and the operating frequency f c of the belt weigher;
  • the given frequency f p of the discharge device is adjusted according to the above formula and the operating frequency f c of the belt weigher.
  • an embodiment of the present application provides a method for controlling a multi-process flue gas purification system, including the following steps:
  • the activated carbon centralized analytical activation subsystem corresponding to the current time t is determined.
  • W X0 ⁇ W Xn(t-Tni)+ W X01 ;
  • it also includes:
  • the unloading flow rate W of the unloading device in the sintering process is determined to be unloaded ; wherein j is a coefficient, and the value is The range is from 0.9 to 0.97; and the discharge flow rate W of the unloading device of the process n is controlled to be the maximum.
  • an embodiment of the present application provides a method for controlling a multi-process flue gas purification system, including the following steps:
  • W X0 ⁇ W Xn(t-Tni)+ W complement + W X01 ;
  • the multi-process flue gas purification system and the control method thereof are provided by the embodiment of the invention, and the system comprises an activated carbon centralized analytical activation subsystem, an activated carbon conveying subsystem, and a flue gas purifying device corresponding to each process, and each flue gas purifying device
  • the activated carbon transport subsystem is connected with the activated carbon centralized analytical activation subsystem, and the polluted activated carbon discharged from the flue gas purification device corresponding to each process is respectively transported to the total activated carbon storage tank of the activated carbon centralized analytical activation subsystem, and then analyzed and activated by the analytical tower.
  • the activated activated carbon is then transported to the flue gas purification device of each process to realize the recycling of the activated carbon.
  • the process control unit provided in the flue gas purification device in each process sends the activated carbon circulating flow rate corresponding to the flue gas purifying device to the main control unit, and the main control unit uses the sum of the activated carbon circulating flow rates corresponding to all the processes to represent the activated carbon centralized analytical activation subsystem.
  • Activated carbon circulation flow and control the activation subsystem control unit set in the activated carbon concentration analysis activation subsystem to adjust the given frequency of the belt scale, feeding device and discharge device in the activated carbon centralized analytical activation subsystem, so that the activated carbon is concentrated analytically activated
  • the circulating flow rate of activated carbon at the subsystem is substantially equal to the sum of the circulating flow of activated carbon in the flue gas purification device in each process, so that the adsorption portion and the analytical portion of the multi-process flue gas purification system reach the purpose of synchronous operation, thereby enabling the activated carbon centralized analytical activation subsystem.
  • the theoretical activated carbon circulation flow rate is balanced with the activated carbon circulation flow rate of the flue gas purification device of each process to improve the operation efficiency.
  • FIG. 1 is a schematic structural view of a conventional flue gas purification system
  • FIG. 2 is a schematic structural view of a multi-process flue gas purification system according to Embodiment 1 of the present application;
  • FIG. 3 is a structural block diagram of a multi-process flue gas purification system according to Embodiment 1 of the present application;
  • FIG. 4 is a schematic structural view of a multi-process flue gas purification system according to Embodiment 2 of the present application;
  • FIG. 5 is a structural block diagram of a multi-process flue gas purification system according to Embodiment 2 of the present application.
  • FIG. 6 is a flowchart of a method for controlling a multi-process flue gas purification system according to an embodiment of the present application
  • FIG. 7 is a flow chart of a method for determining a circulating flow rate of activated carbon in a flue gas purification device in each process according to an embodiment of the present application;
  • FIG. 8 is a flow chart of a method for determining a supplementary flow rate for supplementing a new activated carbon according to an embodiment of the present application
  • FIG. 9 is a flowchart of a control method of a multi-process flue gas purification system according to still another embodiment of the present application.
  • FIG. 10 is a flow chart of a control method of a multi-process flue gas purification system provided by another embodiment of the present application.
  • 1-flue gas purification device 11-feeding equipment, 12-adsorption tower, 13-discharge equipment, 14-buffer silo, 15-discharge equipment, 16-net flue gas, 17-origin flue gas, 2-activated carbon concentration analysis activation subsystem, 21-buffer bin, 22-feeding device, 23-analysis tower, 24-discharge device, 25-total activated carbon bin, 26-belt scale, 27-screening device, 28- Activated activated carbon storage, 29-new activated carbon replenishing device, 20-separating device, 201-sintering process unloading device, 202-process unloading device, 3-activated carbon transport subsystem, 110-process 1 flue gas purification device, 111- Step 1 Feeding equipment, 112-Step 1 adsorption tower, 113-Step 1 discharge equipment, 114-Step 1 buffer silo, 115-Process 1 discharge equipment, 116-Process 1 net flue gas, 117-Process 1 original Flue
  • FIG. 2 is a schematic structural view of a multi-process flue gas purification system according to Embodiment 1 of the present application
  • FIG. 3 is a structural block diagram of a multi-process flue gas purification system according to Embodiment 1 of the present application.
  • a multi-process flue gas purification system provided by an embodiment of the present application includes: an activated carbon centralized analytical activation subsystem 2, an activated carbon delivery subsystem 3, and a flue gas purification device corresponding to each process, and each flue gas purification device.
  • the activated carbon delivery subsystem 3 is connected to the activated carbon centralized analytical activation subsystem 2, respectively.
  • a activated carbon centralized analytical activation subsystem 2 is disposed in the whole plant, and the flue gas purification devices provided at each process are respectively combined with the same activated carbon centralized analytical activation subsystem. 2 connected, that is, a one-to-many structural relationship is formed.
  • the multi-step flue gas purification system, the process 1 flue gas purification device 110, and the process 2 flue gas purification device 120 respectively have a tandem structure through the activated carbon transport subsystem 3 and the activated carbon centralized analytical activation subsystem 2,
  • the polluted activated carbon discharged from each flue gas purification device is separately transported to the activated carbon centralized analytical activation subsystem 2, and the activated activated carbon obtained after the analytical activation is separately transported to the flue gas purification device in each process to realize the circulation of the activated carbon. use.
  • FIG. 2 is merely an example showing the relationship between the step 1 flue gas purification device 110 and the step 2 flue gas purification device 120 and the activated carbon concentration analysis activation subsystem 2.
  • the multi-process flue gas purification system includes a plurality of flue gas purification devices corresponding to the processes.
  • only the multi-step flue gas purification system includes the step 1 flue gas purifying device 110 and the step 2 flue gas purifying device 120.
  • the method adopted is to transport by the activated carbon conveying subsystem 3. Because in the steel plant, the distance between two adjacent flue gas purification devices is far, and the activated carbon centralized analytical activation subsystem 2 and each flue gas purification device are in a series relationship, so that different flue gas purification devices and activated carbon are analyzed in a concentrated manner. The distance between the activation subsystems 2 is also different. In order to achieve efficient transportation and recycling of activated carbon, transportation by belt or conveyor may not be suitable for long distances.
  • the activated carbon conveying subsystem 3 in addition to the belt and the conveyor, can also be transported by using a car to avoid setting up a conveyor or a belt in the whole plant, increasing the floor space and affecting the structural layout of the whole plant. It can also increase the efficiency of the activated carbon transporting a long distance.
  • the activated carbon concentration analysis activation subsystem 2 includes an analysis tower 23 for analyzing and activating the polluted activated carbon discharged from the flue gas purification device corresponding to each process, so as to obtain activated activated carbon for recycling; and is disposed at the inlet end of the analytical tower 23.
  • the feeding device 22 is configured to send the total polluted activated carbon discharged from the flue gas purifying device corresponding to each step to the analytical tower 23 at a constant frequency or flow rate to accommodate the analytical activation frequency of the analytical tower 23;
  • the discharge device 24 at the outlet end, the discharge device 24 is connected to the inlet end of the flue gas purification device corresponding to each process through the activated carbon delivery subsystem 3, and the discharge device 24 is used to activate the activated carbon obtained by analytically activating the analytical column 23.
  • a certain frequency or flow rate is discharged into the activated carbon conveying subsystem 3, and then transported to the flue gas purifying device in each process; the total activated carbon storage chamber disposed between the outlet end of the flue gas purifying device corresponding to each process and the feeding device 25, for collecting polluted activated carbon discharged from the flue gas purification device in each process; and, being disposed in the total activated carbon cartridge 25 and the feedstock
  • a belt weigher 26 is disposed between 22 for transporting all contaminated activated carbon collected in the total activated carbon cartridge 25 to the activated carbon conveying subsystem 3, and then to the buffer tank 21 disposed above the feeding device 22, feeding
  • the device 22 effects communication between the buffer chamber 21 and the analytical column 23 to feed the contaminated activated carbon into the analytical column 23 at a constant flow rate or frequency through the feed device 22.
  • the flue gas purification device 110 of the first step includes a step 1 feeding device 111, a step 1 adsorption tower 112, a step 1 discharge device 113, a step 1 buffer silo 114, a step 1 discharge device 115, a process 1 activated carbon cartridge 118, and a process. 1 belt scale 119.
  • the activated carbon storage tank 118 of the process 1 is used to carry the activated activated carbon transported by the activated carbon centralized analytical activation subsystem 2, and is transported to the activated carbon conveying subsystem 3 through the belt scale 119 of the process 1, due to the purification of the flue gas.
  • the activated carbon conveying subsystem 3 may be a conveyor.
  • the activated activated carbon stored in the buffer chamber of the first step enters the adsorption tower 112 of the step 1 through the feed device 111 of the first step, and the raw flue gas 117 of the first step also enters the adsorption tower 112 of the first step, and the pollution carried by the raw flue gas 117 of the first step
  • the obtained step 1 net flue gas 116 is discharged.
  • the contaminated activated carbon adsorbed with the pollutants is discharged to the buffer silo 114 of the process 1 through the discharge device 113 of the process 1 for short-term storage.
  • the unloading device of the process 1 is processed.
  • the contaminated activated carbon is discharged into the activated carbon delivery subsystem 3.
  • the activated carbon conveying subsystem 3 may select an automobile, and then use the activated carbon conveying subsystem 3 to deliver the contaminated activated carbon into the total activated carbon cartridge 25, waiting for the analytical activation treatment.
  • the process 2 flue gas purification device 120 includes a process 2 feeding device 121, a process 2 adsorption tower 122, a process 2 discharge device 123, a process 2 buffer silo 124, a process 2 discharge device 125, and a process 2 activated carbon cartridge. 128 and step 2 belt scale 129 step 2.
  • Step 2 The flue gas purification device 120 performs the flue gas purification on the raw flue gas 117 in the step 2, and the process of obtaining the net flue gas 126 in the second step is the same as the flue gas purification device 110 in the first step, and will not be described herein.
  • the multi-process flue gas purification system provided in this embodiment further includes a computer subsystem 10, and the computer subsystem 10
  • the main control unit 100 is disposed, and the activation subsystem control unit 102 is disposed in the activated carbon concentration analysis activation subsystem for controlling the working state of each structure in the activated carbon centralized analysis activation subsystem 2 and adjusting the working parameters; and setting in each process
  • the process control unit in the middle flue gas purification device is configured to control the working state of each structure in the corresponding flue gas purifying device and adjust the working parameters;
  • the main control unit 100 is configured to perform bidirectional data with the activation subsystem control unit 102 and the process control unit.
  • control activation subsystem control unit 102 and the process control unit execute corresponding instructions, thereby achieving uniform and precise control of the entire multi-process flue gas purification system, and improving the operation efficiency of the flue gas purification.
  • the process control unit at each process has the following functions, that is, determining the activated carbon circulation flow W Xn(tni) corresponding to the flue gas purification device at the time t ni in the current process; and, in the current process
  • the process control unit at each process sends the activated carbon flow rate in the corresponding flue gas purification device to the main control unit 100, so that the main control unit 100 calculates and calculates the activated carbon flow rate of the flue gas purification device in all processes.
  • the analysis is to adjust the working state of the flue gas purification device in the corresponding process, so that the operating efficiency of the overall multi-process flue gas purification system is maximized.
  • the process control unit corresponding to the corresponding process n determines the activated carbon circulation flow W Xn(tni) corresponding to the flue gas purification device at the time t ni in the current process as follows:
  • step n generated in the production process of the original total amount of flue gas V n, according to the following formula and calculate the total SO 2 and NO X flow rate corresponding to the original flue t ni in time;
  • W Sn(tni) is the total flow rate of SO 2 in the raw flue gas corresponding to the step n at time t ni , in units of kg/h
  • W Nn(tni) is the original flue gas corresponding to the step n at time t ni the total NO X flow rate, the unit kg / h
  • V n is the total original flue t ni corresponding to the time, the unit Nm 3 / h
  • the flue gas purification device that mainly removes the flue gas NO X and sO 2, and therefore, can be estimated theoretically required according to the amount of sO 2 and NO X into the adsorption tower of the flue gas carried in The amount of activated carbon is used to achieve the best adsorption effect, and neither adsorption saturation nor insufficient adsorption occurs.
  • W Xn(tni) K 1 ⁇ W Sn(tni) + K 2 ⁇ W Nn(tni) ;
  • W Xn(tni) is the circulating flow rate of activated carbon at t ni time corresponding to the flue gas purification device in process n, unit kg/h; K 1 is the first coefficient, and the value ranges from 15 to 21; K 2 is the first The two coefficients are in the range of 3 to 5.
  • the flow state of the activated carbon and the flue gas are required.
  • flow state satisfies a certain proportional relationship, i.e., flue gas cleaning certain ratio between SO 2 and NO X flow rate total flow circulation apparatus charcoal original flue gas.
  • the process control unit at each process sends the activated carbon circulation flow rate W Xn(tni) of the flue gas purification device in the current process to the main control unit 100, for example, the process 1 control unit 1011 converts the activated carbon of the process 1 flue gas purification device 110.
  • the circulation flow rate W X1 (t1i) is sent to the main control unit 100; the process 2 control unit 1012 transmits the activated carbon circulation flow rate W X2 (t2i) of the process 2 flue gas purification device 120 to the main control unit 100; the process n control unit 101n processes the process
  • the activated carbon circulation flow rate W Xn(tni) of the n flue gas purification device is sent to the main control unit 100.
  • the main control unit 100 acquires the activated carbon to the circulating flow rate W Xn (tni) t ni corresponding to the time step n, flue gas cleaning equipment, activated carbon in accordance with all the processes in the circulation flow rate W Xn (tni) flue gas purification device, determining a current time t
  • the corresponding activated carbon concentrates on the activated carbon circulation flow W X0 of the activation subsystem.
  • the circulation amount W X0 is the theoretical activated carbon circulation amount of the activated carbon centralized analytical activation subsystem, and the operating state and working parameters of the activated carbon centralized analytical activation subsystem can be accurately controlled according to the theoretical value.
  • the main control unit 100 determines, according to the following formula, the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t according to the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n;
  • T ni is the time during which the polluted activated carbon corresponding to the flue gas purification device in step n is transported to the activated carbon concentration analysis activation subsystem at time i, and is provided by the activated carbon delivery subsystem 3.
  • the activated carbon circulation flow W X0 of the activated carbon centralized analysis activation subsystem is the sum of the activated carbon circulation flow rate of the flue gas purification device in each process, but the current time t when calculating the theoretical activated carbon circulation flow of the activation activated subsystem 2 in the activated carbon concentration is not
  • Each of the process control units determines the amount of activated carbon circulation of the flue gas purification device in each of the respective processes and the time t ni at which the data is transmitted.
  • the polluted activated carbon received in the activation subsystem 2 is just the polluted activated carbon discharged from the flue gas purification device in the corresponding process, that is, the circulating flow rate of the contaminated activated carbon received by the activated carbon concentration analysis activation subsystem 2 cannot be ensured as the activated carbon actually in the corresponding flue gas purification device.
  • the activated carbon circulation flow rate, and the current time t activates the activated carbon circulation flow obtained by the subsystem control unit 102
  • the corresponding process needs to be obtained after the transportation time T ni , that is, the precise control of the multi-process flue gas purification system needs to be extended. After the T ni period, this will reduce the operating efficiency, resulting in an inaccurate theoretical activated carbon circulation flow W X0 of the activated activated carbon concentration analysis activation subsystem.
  • the current time t when calculating the circulating flow rate of the activated carbon of the activated carbon concentration analysis activation subsystem 2 is 10:00, and the time T 1i of the polluted activated carbon discharged from the flue gas purification device in the process 1 to the activated carbon concentration analysis activation subsystem is 0.5.
  • the step 1011 the control unit 1 need to be 9.30 t 1i corresponding to the time step 1 charcoal circulation flow rate W X1 (t1i) flue gas cleaning apparatus 100 transmits to the main control unit;
  • active carbon concentration calculating analytical The current time t of the theoretical activated carbon circulation flow of the activation subsystem 2 is 14:20, and the time T 2i of the contaminated activated carbon discharged from the flue gas purification device in the process 2 to the activated carbon centralized analytical activation subsystem is 40 minutes, then, the process 2
  • the control unit 1012 transmits the activated carbon circulation flow rate W X2 (t2i) of the flue gas purification device in the step 2 corresponding to the time T 2i at 13:40 to the main control unit 100.
  • the accuracy of the activated carbon circulation flow W Xn(tni) of the flue gas purification device in each process in order to obtain the data. It can accurately represent the activated carbon circulating flow W X0 of the activation subsystem of the activated carbon concentration at the current time t. Therefore, it is necessary to acquire the activated carbon circulation of the flue gas purification device in each process corresponding to the time period of the transportation time T ni at the current time t.
  • the flow rate that is, the flow rate of the activated carbon circulation of the flue gas purification device in each step corresponding to the current time t is converted by W Xn(t-Tni) .
  • the main control unit 100 determines that the activated carbon concentrates on the activated carbon circulating flow W X0 of the activation subsystem, it is necessary to adjust the blanking flow rate of the belt scale 26 according to the data to adjust the feeding device of the analytical tower 23 according to the blanking flow rate of the belt scale 26 . 22 and the discharge flow rate of the discharge device 24, such that the discharge flow rate of the belt balance 26, the discharge flow rate of the feeding device 22, and the discharge flow rate of the discharge device 24, and the theoretical activated carbon cycle of the activated carbon concentration analysis activation subsystem 2
  • the flow rate is equal, achieving the effect of accurately controlling the multi-process flue gas purification system.
  • the activated carbon circulation flow rate of the flue gas purification device for each process can be the same as the activated carbon circulation flow rate of the activated carbon concentration analysis activation subsystem 2,
  • the whole multi-process flue gas purification system can realize synchronous operation, avoiding the amount of activated activated carbon transported by the activated carbon centralized analytical activation subsystem 2, which is insufficient to support the amount of adsorbed flue gas at the flue gas purification device in each process, and reduce the adsorption effect.
  • the amount of activated activated carbon transported by the activated carbon concentration analysis activation subsystem 2 is too large, so that the flue gas purification devices in each process are in a saturated state, and the activated activated carbon overflows. Therefore, it is necessary to control the blanking flow rate W C of the belt weigher 26 to be equal to the activated carbon circulating flow rate W X0 of the activated carbon concentration analysis activation subsystem.
  • the activation subsystem control unit 102 adjusts the blanking flow rate W C of the belt scale 26 according to the activated carbon circulating flow rate W X0 of the activated carbon concentration analysis activation subsystem, so that the blanking flow rate of the belt scale 26 is gradually combined with the activated carbon concentration analysis activation subsystem 2
  • the operating frequency f c is the operating frequency of the theoretical belt scale 26, i.e., step enables multiple operating frequency flue gas purification system to achieve synchronous operation.
  • the main control unit 100 then acquires the belt weigher 26 running frequency f c, the frequency f c of the operating belt scale 26, the sub control unit 102 transmits the activation instruction to adjust to the activated sub-system control unit 102 to adjust the feed apparatus 22 given frequency f g and discharge device 24 of a given frequency f p, in order to achieve control of multiple process flue gas purification system.
  • the main control unit 100 analyzes and calculates data according to the acquired data, and generates a control instruction according to the result to control the activation subsystem control unit 102 to perform corresponding operations. Therefore, exactly according to the operation frequency f c belt scale 26, adjusting the feed means to a predetermined frequency 22 f g and discharge device 24 for a given frequency f p, the main control unit 100 is configured to execute the following program steps:
  • Kc, K g and K p are constant, and are related to the width of the belt scale 26, the outlet width of the feeding device 22, the outlet width of the discharge device 24, the motor and the frequency converter parameters, and the specific gravity of the activated carbon.
  • the motor Since the belt scale 26, the feeding device 22, and the discharging device 24 are all feeding devices transported by the motor with animal materials, the motor is dragged by the frequency converter, and the running frequency of the frequency converter determines the rotation speed thereof, so that the belt scale 26 and the feeding device 22.
  • the material delivery flow rate of the discharge device 24 is proportional to the motor rotation speed, that is, the discharge flow rate is proportional to the rotation speed of the motor.
  • the circulation flow rate of the activated carbon for the flue gas purification device of each process can be the same as the circulation flow rate of the activated carbon of the activated carbon concentration analysis activation subsystem 2, so that the entire multi-process flue gas purification system can realize synchronous operation, and needs to be analyzed according to the activated carbon concentration.
  • the theoretical activated carbon circulation flow rate W X0 of the activation subsystem 2 adjusts the discharge flow rate of the belt scale 26, and then adjusts the discharge flow rate of the feeding device 22 and the discharge device 24 of the analytical tower 23 according to the discharge flow rate of the belt balance 26, so that the belt
  • the discharge flow rate W C of the scale 26, the discharge flow rate W G of the feed device 22, and the discharge flow rate W P of the discharge device 24 are equal to the theoretical activated carbon circulation flow rate W X0 of the activated carbon concentration analysis activation subsystem.
  • the proportional relationship between the given frequency f p of the discharging device 24 and the operating frequency f c of the belt scale 26, f g , f p can be adjusted to f c
  • the blanking flow rate W C of the belt scale 26, the blanking flow rate W G of the feeding device 22, and the blanking flow rate W P of the discharging device 24, and the activated carbon centralized analytical activation subsystem activated carbon is equal to the theoretical W X0 circulation flow, such that the theoretical activated charcoal concentrate circulation rate W X0 parsing subsystem activated charcoal and the circulation flow rate of the flue gas purification device in each step to reach equilibrium, so as to ensure the entire multi-step gas purification system to achieve synchronous operation , the operating efficiency is best.
  • the supplemental point of the new activated carbon is located in the activated carbon concentration analysis activation subsystem 2, that is, the activated carbon concentration analysis activation subsystem 2 provided in the embodiment further includes: a new activated carbon replenishing device 29 disposed above the total activated carbon cartridge 25.
  • the device supplementing the new activated carbon is disposed at the total activated carbon storage tank 25, because the total activated carbon cartridge 25 is used for receiving the polluted activated carbon discharged from the flue gas purification device in all processes of the whole plant, and is uniformly transported after receiving all the contaminated activated carbon.
  • the analytical activated carbon is analyzed and activated, and the activated activated carbon obtained is uniformly transported to the flue gas purification device of each step to realize the recycling of the activated carbon.
  • the total activated carbon cartridge 25 receives all the polluted activated carbon, and can accurately determine how much activated carbon is lost in the adsorption of flue gas and the transportation process of the activated carbon in the flue gas purification device in each process, and can be uniformly supplemented in the total activated carbon storage tank 25 To avoid the addition of activated carbon to the flue gas purification device in each process, it is not guaranteed that the amount of new activated carbon will be replenished each time, and the overall operating efficiency of the system will also be affected.
  • the new activated carbon replenishing device 29 is provided with a replenishing carbon control unit 104, which performs bidirectional data transmission with the main control unit 100, and the refueling control unit 104 is configured to control the new according to the instruction of the main control unit 100.
  • the activated carbon replenishing device 29 replenishes the new activated carbon cartridge 25 with new activated carbon at a certain frequency.
  • the main control unit 100 of the multi-process flue gas purification system determines the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t according to the following steps:
  • a fill control unit 104 determines a new carbon GAC supplementary replenishing device 29 is activated a new makeup flow W complement. Since the activated carbon centralized analytical activation subsystem 2 uniformly analyzes and activates all the polluted activated carbon, and the activated activated carbon is uniformly transported to each process, and the flue gas purification device is not provided with the screening loss carbon in each process, but is concentrated in the activated carbon. The activation subsystem 2 is analyzed to perform uniform screening of charcoal to ensure the accuracy of the data of the screened charcoal and improve the operating efficiency of the overall system.
  • the activated carbon concentration analysis activation subsystem 2 further includes: a screening device 27 located below the discharge device 24 and an activated activated carbon cartridge 28 located below the screening device 27, the screening device 27 being used for the parsing tower 23
  • the activated activated carbon is analyzed for sieving, and the activated activated carbon having the target particle size is obtained and stored in the activated activated carbon storage tank 28.
  • the activated activated carbon in the activated carbon storage tank 28 is the source of the activated carbon required for the flue gas purification device in each process.
  • the sieving device 27 may be a vibrating screen or other sieving device, which is not specifically limited in this embodiment.
  • the screening device 27 generates a small amount of loss when sieving the analyzed activated carbon, and the loss may include the loss of activated carbon caused by the flue gas purification device in the process of adsorbing the flue gas in the process.
  • the amount of new activated carbon needed to be replenished in the total activated carbon storage tank 25 can be accurately and quickly determined to ensure the theoretical activated carbon circulation flow W X0 of the activated carbon concentration analysis activation subsystem and the flue gas purification of each process.
  • the circulating flow rate of the activated carbon of the device is balanced, thereby ensuring that the entire multi-process flue gas purification system can realize synchronous operation and the operation efficiency is optimal.
  • the activation subsystem control unit 102 in this embodiment adopts the following method steps:
  • the amount of depleted activated carbon is determined by using the difference between the amount of all contaminated activated carbon entering the analytical column and the amount of activated activated carbon discharged.
  • Subsystem is activated by the control unit 102 detects the actual current time t activated activated carbon cartridge quantity Q corresponding to the solid, and then run in a multi-step cycle flue gas purification system loaded activated carbon 23 within the desorber quantity Q 0, can be determined according to At the time, all the lost activated carbon was produced.
  • new control quantity added activated charcoal with supplementary means loss of activated complement Q loss quantity Q is equal to, activated carbon supplementary quantity Q adjusted up, determining new activated charcoal add new supplementary device makeup flow per unit time W Make up .
  • the amount of depleted activated carbon produced by the screening device 27 is Q loss , which is the amount of new activated carbon to be actually replenished by the new activated carbon replenishing device 29.
  • the loss of activated carbon loss quantity Q as a reference the new device consists of activated complement new supplementary control unit 104 controls the carbon 29 according to the loss quantity Q activated charcoal added loss quantity Q is determined complement.
  • the supplementary flow W supplement of the new activated carbon per unit time can be determined.
  • W X0 ⁇ W Xn(t-Tni)+ W complement .
  • the total activated carbon storage tank 25 includes the polluted activated carbon discharged from the flue gas purification device in each process and the newly added new activated carbon
  • the above-mentioned activated carbon circulation flow rate should be comprehensively considered when determining the theoretical activated carbon circulation flow rate of the activated carbon concentration analysis activation subsystem 2.
  • Activated carbon concentrated analytical activation subsystem 2 generates carbon loss at the current cycle, and then supplements to ensure that the activated carbon concentrates on the activated carbon circulation flow corresponding to the activation subsystem in the next cycle, and the activated carbon circulation flow in the flue gas purification device in each process The sum is equal.
  • the present embodiment can improve the accuracy of the loss and the replenishing quantity by uniformly screening the carbon loss and uniformly supplementing the new activated carbon, and can minimize the time of the operation, thereby improving the multi-process flue gas purification system. operating efficiency.
  • the multi-process flue gas purification system provided by the embodiment of the present application includes the activated carbon centralized analytical activation subsystem 2, the activated carbon conveying subsystem 3, and the flue gas purification device corresponding to each process, and each flue gas purification device.
  • the device is respectively connected to the activated carbon centralized analytical activation subsystem 2 through the activated carbon conveying subsystem 3, and the polluted activated carbon discharged from the flue gas purification device corresponding to each process is respectively transported to the total activated carbon storage tank 25 of the activated carbon centralized analytical activation subsystem 2, and then the analytical tower 23
  • the analysis and activation are carried out, and the activated activated carbon obtained is transported to the flue gas purification device of each step to realize the recycling of the activated carbon.
  • the process control unit provided in the flue gas purification device in each step transmits the activated carbon circulation flow rate corresponding to the flue gas purification device to the main control unit 100, and the main control unit 100 uses the sum of the activated carbon circulation flow rates corresponding to all the processes to represent the active carbon concentration analysis activator.
  • the activated carbon of the system 2 circulates the flow rate, and controls the activation subsystem control unit 102 disposed in the activated carbon concentration analysis activation subsystem 2 to adjust the belt scale 26, the feeding device 22, and the discharge device 24 of the activated carbon concentration analysis activation subsystem 2.
  • the activated carbon circulating flow at the activated activated carbon system 2 is substantially equal to the total activated carbon circulating flow rate of the flue gas purification device in each process, so that the adsorption portion and the analytical portion of the multi-process flue gas purification system are synchronized.
  • the purpose is to make the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem and the activated carbon circulating flow of the flue gas purifying device of each process reach equilibrium, thereby improving the operating efficiency.
  • FIG. 4 is a schematic structural view of a multi-process flue gas purification system according to Embodiment 2 of the present application
  • FIG. 5 is a structural block diagram of a multi-process flue gas purification system according to Embodiment 2 of the present application.
  • the multi-process flue gas purification system provided in the second embodiment of the present application is different from the above embodiment in that the system can also be applied in a sintering process due to sintering in a steel plant.
  • the flue gas generated by the process is much larger than the flue gas produced by other processes, that is, the amount of flue gas generated in the sintering process is 70% of the total flue gas volume of the steel plant.
  • the sintering process is set up together with the activated carbon concentration analysis activation subsystem 2, that is, the multi-process flue gas purification system further includes a sintering process disposed in the activated carbon concentration analysis activation subsystem 2 Flue gas purification device.
  • the contaminated activated carbon discharged from the flue gas purification device 4 in the sintering process is not transported to the total activated carbon cartridge 25 for short-term storage, and can be directly sent to the analytical tower 23 for analytical activation.
  • the sintering process may include 1# sintering and 2# sintering.
  • two activated carbon concentrated analytical activators may be provided correspondingly.
  • System 2 In the present embodiment, only one activated carbon concentration analysis activation subsystem 2, one sintering process flue gas purification device 4, and a plurality of other process flue gas purification devices are exemplified.
  • the flue gas purification device 4 in the sintering process has the same structure as the flue gas purification device in each step shown in FIG. 2. Specifically, the flue gas purification device 4 in the sintering process includes a sintering process feeding device 41, a sintering process adsorption column 42 and Sintering process discharge device 43. In the sintering process, the flue gas purification device 4 performs the flue gas purification on the raw flue gas 44 in the sintering process to obtain the sintering process net flue gas 45.
  • the process is the same as the flue gas purification device 110 in the first step, and the corresponding process can refer to the content of the first embodiment. No longer.
  • the flue gas purification device 4 is provided with a sintering process control unit 103 for bidirectional data transmission with the main control unit 100, and controls the operation state of the flue gas purification device 4 in the sintering process according to the instruction of the main control unit 100. Adjust working parameters, etc.
  • the activated carbon circulating flow rate of the flue gas purification device 4 in the sintering process and the flue gas purification in each process are simultaneously considered.
  • the activated carbon circulation flow rate of the device When the sintering process is added in the multi-process flue gas purification system, when calculating the activated carbon circulating flow rate W X0 of the activated carbon concentration analysis, the activated carbon circulating flow rate of the flue gas purification device 4 in the sintering process and the flue gas purification in each process are simultaneously considered.
  • the activated carbon circulation flow rate of the device when sintering process is added in the multi-process flue gas purification system, when calculating the activated carbon circulating flow rate W X0 of the activated carbon concentration analysis, the activated carbon circulating flow rate of the flue gas purification device 4 in the sintering process and the flue gas purification in each process are simultaneously considered.
  • the activated carbon circulation flow rate of the device when sintering process is added in the multi-process flue gas pur
  • the sintering process control unit 103 determines the activated carbon circulation flow rate W X01 of the flue gas purification device in the sintering process corresponding to the current time t, and to transmit the activated carbon circulation flow rate W X01 to the main control unit 100.
  • the sintering step is activated carbon gas purification apparatus of the circulation flow rate W X01 4, the above-described embodiments provide a method can be referred to, is determined according to SO 2 in the flue gas and the total flow rate of NO X, are not repeated herein.
  • the activated carbon circulation flow rate W X01 is transmitted to the main control unit 100, and the main control unit 100 determines the current time t according to the following steps.
  • the corresponding activated carbon concentrates on the activated carbon circulation flow W X0 of the activation subsystem:
  • the moment of the activated carbon circulation flow rate W X01 may be the current time t of calculating the activated carbon circulation flow rate of the activated carbon concentration analysis activation subsystem 2 .
  • W X0 ⁇ W Xn(t-Tni)+ W X01 .
  • the activated carbon circulating flow of the activated carbon concentration analysis is the sum of the activated carbon circulation flow rate of the flue gas purification device 4 in the sintering process and the activated carbon circulation flow rate of the flue gas purification device in each process, and if the multi-process flue gas purification is performed when the system is provided with activated carbon filters, and activated carbon new replenishment operation, in the calculation of focus activated charcoal activated parsing subsystem circulation rate, but also to consider the total active carbon cartridge 25 to add new makeup flow W complement activated carbon, activated carbon can ensure further The theoretical activated carbon circulation flow W X0 of the activation subsystem is concentrated and balanced with the sintering process and the activated carbon circulation flow of the flue gas purification device in each process, thereby ensuring that the entire multi-process flue gas purification system can realize synchronous operation and the operation efficiency is optimal.
  • the theoretical activated carbon circulation flow rate of the activated carbon concentration analysis activation subsystem changes, and the polluted activated carbon discharged from the flue gas purification device 4 in the sintering process is directly sent to the analytical tower 23, the total activated carbon Only the polluted activated carbon discharged from other processes is included in the bin 25.
  • the theoretical activated carbon circulation flow rate of the activated carbon concentration analysis activation subsystem 2 is the sum of the activated carbon circulation flow rate discharged by the flue gas purification device 4 in the sintering process and the activated carbon circulation flow rate of the flue gas purification device in other processes.
  • the activation subsystem control unit 102 is further configured to perform the following program steps: adjusting the belt scale according to the activated carbon circulation flow W X0 of the activated carbon concentration analysis activation activated carbon system and the activated carbon circulation flow rate W X01 of the flue gas purification apparatus in the sintering process
  • the given frequency f g of the feeding device 22 of the analytical tower 23 After the operating frequency f c of the belt scale 26 is re-determined, the given frequency f g of the feeding device 22 of the analytical tower 23, the given frequency f p of the discharging device 24 and the operating frequency f c of the belt scale 26 are again calculated.
  • the discharge flow rate W P of the G and the discharge device 24 is equal, so that the theoretical activated carbon circulation flow W X0 of the activated carbon centralized analysis activation subsystem and the activated carbon circulation flow rate of the flue gas purification device of each process are balanced, thereby ensuring the entire multi-process flue gas.
  • the purification system is capable of simultaneous operation and optimum operating efficiency.
  • the multi-process flue gas purification system provided in the embodiment includes the flue gas purifying device corresponding to the sintering process and the flue gas purifying device corresponding to the other processes, after the activated activated carbon is generated, there is a corresponding amount allocated for each process in the steel plant.
  • the problem with activated carbon is much larger than the amount of flue gas generated in the other processes. Therefore, in order to ensure the optimal adsorption effect of the flue gas purification device in the sintering process, it is necessary to allocate a large amount of activated activated carbon to the sintering process.
  • the amount of distribution needs to be determined according to the loading amount of the adsorption tower of the corresponding flue gas purification device or the circulating flow rate of the activated carbon corresponding to the sintering process, and the amount of activated carbon distributed to other processes is all the activated carbon remaining after being distributed to the sintering process.
  • the activated carbon concentration analysis activation subsystem 2 further includes a dispensing device 20 located below the activated activated carbon cartridge 28; the dispensing device 20 includes a process unloading device 202 for dispensing activated carbon for each process, and for In the sintering step, the unloading device 201 for activating the activated carbon is distributed.
  • the activated carbon is distributed to the flue gas purification device 4 in the sintering process in the steel plant by the sintering process unloading device 201, and the amount of activated carbon to be distributed is determined according to the loading amount of the adsorption tower in the corresponding flue gas purification device or the circulating flow rate of the activated carbon corresponding to the sintering process.
  • the amount of activated carbon dispensed in the sintering process is determined according to the loading amount of the adsorption column in the corresponding flue gas cleaning device.
  • Q- burning 0 is the loading amount of activated carbon in the adsorption tower in the sintering process, unit kg;
  • W X01 is the circulating flow rate of activated carbon at the current time t in the sintering process in the sintering process, unit kg/h;
  • T- burning is sintering activated carbon adsorption tower step the residence time in the range of 110 to 170, H units; wherein the residence time T 0 determined according to burn gas volume, gas velocity and the like.
  • the total discharge amount of the unloading device in the sintering process can be determined, and the discharge flow rate unloading of the unloading device 201 in the sintering process per unit time can be determined. 1 .
  • the amount of activated carbon dispensed in the sintering step is determined according to the circulating flow rate of activated carbon corresponding to the sintering step.
  • the coefficient of variation j of the weight that is, the discharge flow rate W of the unloading device 201 of the sintering process, is determined as follows:
  • W unload 1 W X01 ⁇ j
  • j is a coefficient, and the value ranges from 0.9 to 0.97.
  • the discharge flow rate of the discharging device 201 is, in fact, the discharge flow rate of each other unloading step W 2 concentration of the Theory of activated charcoal circulation flow rate W and the sintering step X0 discharge means activated subsystem 201 difference between the discharge flow rate W 1 discharged, but in order to ensure continuous operation of a multi-step flue gas purification system, and improve operational efficiency, in this embodiment, the step apparatus for dispensing the activated carbon each other flue gas cleaning process, the discharge device 202
  • the discharge flow W unloading 2 is set to the maximum to achieve the purpose of transporting how much material is stored in the material distribution device.
  • the new activated carbon replenishing device 29 can also be configured in the multi-process flue gas purification system provided in the second embodiment.
  • the main control unit 100 is configured to perform the following steps. To achieve precise control of multi-process flue gas purification systems:
  • W X0 ⁇ W Xn(t-Tni)+ W complement + W X01 ;
  • the multi-process flue gas purification system sets the sintering process for generating more flue gas together with the activated carbon centralized analytical activation subsystem, and the polluted activated carbon discharged from the flue gas purification device 4 in the sintering process can be at the fastest speed. Entering the activated carbon centralized analysis activation subsystem 2 for analytical activation, avoiding wasting time during transportation, resulting in reduced system operating efficiency. When the operating parameters of the activated carbon of the activation subsystem 2 are analyzed according to the activated carbon concentration, the circulation flow rate of the activated carbon corresponding to the sintering process and the circulating flow rate of the activated carbon corresponding to the other processes are fully considered, so that the feeding device for controlling the analytical tower is controlled.
  • the given frequency f g of 22, the given frequency f p of the discharge device 24 and the operating frequency f c of the belt scale 26 are equal, so as to ensure that the activated carbon concentrates on the activated carbon circulation flow W X0 and the sintering process. And the circulation flow rate of the activated carbon corresponding to the flue gas purification device corresponding to each process is balanced, thereby ensuring that the entire multi-process flue gas purification system can achieve synchronous and smooth operation, and the operation efficiency is optimal.
  • the embodiment of the present application provides a multi-process flue gas purification system control method, which is applied to the multi-process flue gas purification system provided by the above embodiment.
  • the control method includes the following steps:
  • the activated carbon circulation flow rate W Xn(tni) of the flue gas purification device in the step n corresponding to the time t ni is determined according to the following steps:
  • step n generated in the production process of the original total amount of flue gas V n, and SO 2 and NO X in accordance with the total flow rate of the original flue t ni time corresponding to the following formula, is calculated;
  • W Sn(tni) is the total flow rate of SO 2 in the raw flue gas corresponding to the step n at time t ni , in units of kg/h
  • W Nn(tni) is the original flue gas corresponding to the step n at time t ni the total NO X flow rate, the unit kg / h
  • W Xn(tni) K 1 ⁇ W Sn(tni) + K 2 ⁇ W Nn(tni) ;
  • W Xn(tni) is the circulating flow rate of activated carbon at t ni time corresponding to the flue gas purification device in process n, unit kg/h; K 1 is the first coefficient, and the value ranges from 15 to 21; K 2 is the first The two coefficients are in the range of 3 to 5.
  • the step of determining the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t includes:
  • the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t is determined;
  • t is the current time
  • T ni is the time during which the polluted activated carbon corresponding to the flue gas purification device in step n is transported to the activated carbon concentration analysis activation subsystem.
  • the activated carbon circulating flow W X0 of the activated carbon concentration analysis activation subsystem corresponding to the current time t is determined according to the following steps:
  • the activated carbon circulating flow rate W Xn(tni) of the flue gas purifying device in the step n the supplementary flow rate W complement , and the following formula, determining the activated carbon circulating flow W X0 of the activated carbon centralized analytical activation subsystem corresponding to the current time t;
  • W X0 ⁇ W Xn(t-Tni) +W complement .
  • the activated carbon loading amount Q 0 of the analytical tower in the activated carbon centralized analytical activation subsystem is determined;
  • Controlling said supplementary GAC GAC supplementary replenishing device activated charcoal loss quantity Q and complement loss quantity Q is equal to, activated carbon supplementary quantity Q adjusted up, new activated carbon per unit time determines supplementary device makeup flow W Make up .
  • the given frequency f g of the feeding device in the activated carbon concentration analysis activation subsystem and the given frequency f p of the discharging device are adjusted according to the operating frequency f c of the belt weigher according to the following steps:
  • the relationship between the given frequency f g of the feeding device and the operating frequency f c of the belt weigher is obtained: Adjusting the given frequency f g of the feeding device according to the above formula and the operating frequency f c of the belt weigher;
  • the given frequency f p of the discharge device is adjusted according to the above formula and the operating frequency f c of the belt weigher.
  • the embodiment of the present application provides a control method for a multi-process flue gas purification system, which is applied to the multi-process smoke provided by the above embodiment.
  • the gas purification system, the control method comprises the following steps:
  • W X0 ⁇ W Xn(t-Tni) +W X01 ;
  • it also includes:
  • the unloading flow rate W of the unloading device in the sintering process is determined to be unloaded ; wherein j is a coefficient, and the value is The range is from 0.9 to 0.97; and the discharge flow rate W of the unloading device of the process n is controlled to be the maximum.
  • the embodiment of the present application provides a multi-process flue gas purification system control method, which is applied to the multi-process smoke provided by the above embodiment.
  • the gas purification system, the control method comprises the following steps:
  • W X0 ⁇ W Xn(t-Tni)+ W complement + W X01 ;
  • the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, where the program may be executed in the embodiments of the control method of the multi-process flue gas purification system provided by the present invention. Some or all of the steps.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (English: read-only memory, abbreviated as: ROM) or a random access memory (English: random access memory, abbreviation: RAM).
  • the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM. , a disk, an optical disk, etc., including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.
PCT/CN2018/083579 2018-01-29 2018-04-18 一种多工序烟气净化系统及其控制方法 WO2019144523A1 (zh)

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MYPI2020002559A MY193803A (en) 2018-01-29 2018-04-18 Multi-process flue gas purification system and method for controlling the same
BR112020011458-8A BR112020011458A2 (pt) 2018-01-29 2018-04-18 sistema de purificação de gás de combustão de múltiplos processos e método para controlar o mesmo
RU2020122728A RU2762190C1 (ru) 2018-01-29 2018-04-18 Многопроцессная система очистки отходящих газов и способ управления указанной системой
KR1020207012434A KR102343392B1 (ko) 2018-01-29 2018-04-18 다공정 연도가스 정화 시스템 및 그 제어방법
PH12020550665A PH12020550665A1 (en) 2018-01-29 2020-05-20 Multi-process flue gas purification system and method for controlling the same

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108554115B (zh) * 2018-01-29 2019-07-12 中冶长天国际工程有限责任公司 一种涉及多工序的烟气净化系统及其控制方法
CN109589746B (zh) * 2018-10-22 2019-10-01 南京大学环境规划设计研究院股份公司 多孔介质材料治理毒害性气体装置
CN109432948B (zh) * 2018-11-22 2021-08-31 中冶长天国际工程有限责任公司 多工序烟气净化系统及其控制方法和装置
CN110314491A (zh) * 2019-07-04 2019-10-11 广东澄宇实业有限公司 一种voc废气处理净化装置及具有其的烤漆房
CN110180324B (zh) * 2019-07-04 2023-11-24 广东澄宇实业有限公司 一种空气净化装置及净化方法
CN112742162B (zh) * 2019-10-31 2022-06-07 中冶长天国际工程有限责任公司 一种用于解析系统的物料平衡控制方法、装置及系统
CN114733326A (zh) * 2022-05-09 2022-07-12 北京市科学技术研究院资源环境研究所 废气排放设备的有机废气治理监测方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000271435A (ja) * 1999-03-26 2000-10-03 Sumitomo Heavy Ind Ltd 排ガス処理方法及び装置
CN102784547A (zh) * 2012-08-07 2012-11-21 无锡雪浪环境科技股份有限公司 垃圾焚烧烟气净化专用活性碳喷射控制系统
CN205127673U (zh) * 2015-11-10 2016-04-06 谢萍 一种有害气体净化装置
CN107551757A (zh) * 2016-06-30 2018-01-09 中冶长天国际工程有限责任公司 一种烟气脱硫脱硝方法和装置
CN107551756A (zh) * 2016-06-30 2018-01-09 中冶长天国际工程有限责任公司 防止腐蚀的烟气脱硫脱硝方法和装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940052B2 (ja) * 1980-06-16 1984-09-27 株式会社荏原製作所 電子ビ−ム多段照射式排ガス脱硫脱硝法および装置
JPH0640945B2 (ja) * 1987-12-10 1994-06-01 株式会社荏原製作所 放射線照射排ガス処理法
RU2006268C1 (ru) * 1991-10-24 1994-01-30 Государственное предприятие - Научно-исследовательский и проектно-изыскательский институт "Теплоэлектропроект" Способ очистки дымовых газов от окислов серы и азота
JP3361200B2 (ja) * 1994-12-12 2003-01-07 日本原子力研究所 電子ビーム照射排ガス処理法及び装置
RU2108138C1 (ru) * 1996-08-02 1998-04-10 Товарищество с ограниченной ответственностью Научно-технический центр "ЭКОСОРБ" Способ и устройство для очистки отходящих газов от вредных компонентов, например оксидов серы или азота
JP5319934B2 (ja) * 2008-02-28 2013-10-16 三菱重工業株式会社 排ガス処理方法及び装置
KR101225328B1 (ko) * 2010-09-29 2013-01-23 현대제철 주식회사 소결배가스 정제장치
US8758480B2 (en) * 2011-09-09 2014-06-24 Torosoleil, Llc Dynamic and continuous control for pressure swing adsorption
CN102580455A (zh) * 2011-12-29 2012-07-18 山西太钢不锈钢股份有限公司 烧结烟气处理系统和方法
CN204543984U (zh) * 2015-03-20 2015-08-12 中冶华天工程技术有限公司 活性焦/炭烟气脱硫及解吸集成系统
CN106693603B (zh) * 2015-11-13 2023-05-09 中冶长天国际工程有限责任公司 活性炭法烟气净化装置及烟气净化方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000271435A (ja) * 1999-03-26 2000-10-03 Sumitomo Heavy Ind Ltd 排ガス処理方法及び装置
CN102784547A (zh) * 2012-08-07 2012-11-21 无锡雪浪环境科技股份有限公司 垃圾焚烧烟气净化专用活性碳喷射控制系统
CN205127673U (zh) * 2015-11-10 2016-04-06 谢萍 一种有害气体净化装置
CN107551757A (zh) * 2016-06-30 2018-01-09 中冶长天国际工程有限责任公司 一种烟气脱硫脱硝方法和装置
CN107551756A (zh) * 2016-06-30 2018-01-09 中冶长天国际工程有限责任公司 防止腐蚀的烟气脱硫脱硝方法和装置

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