CN109621930B - Rapid cooling system and method for analytic tower in active coke flue gas purification system - Google Patents
Rapid cooling system and method for analytic tower in active coke flue gas purification system Download PDFInfo
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- CN109621930B CN109621930B CN201910101963.3A CN201910101963A CN109621930B CN 109621930 B CN109621930 B CN 109621930B CN 201910101963 A CN201910101963 A CN 201910101963A CN 109621930 B CN109621930 B CN 109621930B
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- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 239000000571 coke Substances 0.000 title claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003546 flue gas Substances 0.000 title claims abstract description 28
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims description 25
- 239000000112 cooling gas Substances 0.000 claims description 4
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 description 41
- 238000010438 heat treatment Methods 0.000 description 10
- 239000012080 ambient air Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention belongs to the technical field of flue gas purification, and particularly relates to a rapid cooling system and a rapid cooling method for an analytic tower in an active coke flue gas purification system. The invention uses the high temperature fan to change the direction of the air flow through the switch of the valve, so that the air heat exchange layer is in a negative pressure state relative to the active coke layer, and the cooling air does not enter the active coke layer, so that the analysis tower is rapidly cooled.
Description
Technical Field
The invention belongs to the technical field of flue gas purification, and particularly relates to a rapid cooling system and a rapid cooling method for an analytic tower in an active coke flue gas purification system.
Background
The active coke flue gas purification technology is the most promising multi-pollutant comprehensive treatment technology currently recognized in the world, and the technology is applied to treatment of various industrial waste gases, such as flue gas of coal-fired boilers, flue gas of sintering machines and flue gas of garbage incineration, and relates to a plurality of industries of chemical industry, electric power, metallurgy and the like.
In the active coke desulfurization and denitrification device, the main function of the analytic tower is to recover the activity of the active coke by heating and collect the regeneration processIs rich in SO generated in (C) 2 Is a gas of (a) a gas of (b). The temperature of the heating section of the analytic tower exceeds 400 ℃, and the temperature range of burning active coke is reached. The active coke and the heating gas adopt an indirect heat exchange mode, the active coke flows in an active coke bed layer, and the heating gas flows in a gas pipeline. The active coke bed layer is not contacted with the gas pipeline. Because the resolved gas is rich in acid sulfide, equipment is easy to corrode under the conditions of start-up and shutdown or improper operation, and the like, a pipe layer between the active coke layer and the heating gas leaks due to corrosion or friction, and the high-temperature active coke contacts with air in a shell layer, so that the active coke can generate a fire accident.
At present, two treatment modes are adopted, one is nitrogen charging protection, high-temperature heating gas is closed to naturally cool the analytical tower, and the method takes a long time. The other method is to blow the cold air into the analysis tower by using a fan, and the method is suitable for emergency treatment when the contact part of the analysis tower and the ambient air leaks, and is not suitable for the method if the analysis tower and the heating side leak.
Disclosure of Invention
The invention aims to provide a rapid cooling system and a rapid cooling method for an analysis tower in an active coke flue gas purification system, wherein when the analysis tower leaks from a heating side, a gas pipeline side is in a negative pressure state relative to an active coke bed layer through the opening and closing of a valve, cooling gas cannot enter the analysis tower, the analysis tower is prevented from being contacted with air, and the analysis tower is rapidly cooled.
The aim of the invention is realized by the following technical scheme:
the invention relates to a rapid cooling system for an analytic tower in an active coke flue gas purification system, which comprises a pipeline arranged in the analytic tower system, a hot blast stove, a diffusing bypass and a high-temperature heat exchange fan which are arranged on the pipeline, and a diffusing valve arranged on the diffusing bypass, and is characterized in that a high-temperature fan outlet cut-off valve is arranged on the rear pipe section of the high-temperature heat exchange fan, an accident exhaust pipeline is arranged between the high-temperature fan outlet cut-off valve and the high-temperature heat exchange fan, an accident exhaust valve is arranged on the accident exhaust pipeline, an accident air inlet bypass is arranged at the inlet of the high-temperature fan and the high-temperature fan outlet cut-off valve, an accident air inlet valve is arranged on the accident air inlet bypass, a cooling air inlet pipeline is arranged at the front pipe section of the high-temperature fan, a cooling air inlet valve is arranged on the cooling air inlet pipeline, a high-temperature fan inlet cut-off valve is arranged between the cooling air inlet pipeline and the high-temperature fan,
one end of the accident air inlet bypass is connected with the pipe section between the high-temperature fan inlet cut-off valve and the high-temperature fan, and the other end of the accident air inlet bypass is connected with the rear pipe section of the high-temperature fan outlet cut-off valve.
The high-temperature fan inlet cut-off valve, the high-temperature fan outlet cut-off valve, the cooling air inlet valve, the accident air inlet valve and the accident exhaust valve adopt an electric cut-off valve, an electric butterfly valve, a manual cut-off valve or a manual butterfly valve.
The method for utilizing the rapid cooling system for the analytic tower in the active coke flue gas purification system is characterized by comprising the following steps:
(1) In a normal working state, a cooling gas inlet valve, an accident gas inlet valve and an accident gas exhaust valve are closed, a diffusing valve, a high-temperature fan inlet cut-off valve and a high-temperature fan outlet cut-off valve are opened, high-temperature flue gas generated by the hot blast stove is heated by an analysis tower to analyze active coke, a part of the flue gas is diffused by a diffusing bypass, and a part of the flue gas is pressurized by the high-temperature fan and returned to the hot blast stove for recycling;
(2) In an accident state, when the analysis tower is required to be cooled, the bleeding valve, the high-temperature fan inlet cut-off valve and the high-temperature fan outlet cut-off valve are closed, and meanwhile, the cooling air inlet valve, the accident air inlet valve and the accident exhaust valve are opened, and low-temperature cooling air firstly enters the analysis tower through the cooling air inlet pipeline and is discharged into the atmosphere through the high-temperature fan outlet after heat exchange of the analysis tower.
The invention has the advantages that:
the rapid cooling system and method for the analytic tower in the active coke flue gas purification system provided by the invention are characterized in that under the accident state that the active coke bed leaks, the existing high-temperature fan of the system is utilized, the direction of air flow is changed through the switch of a valve, so that the air heat exchange layer is in a negative pressure state relative to the active coke bed, and cooling air is prevented from entering the active coke bed, so that the analytic tower is rapidly cooled, the cooling method of the system is safe and reliable, and rapid cooling is ensured to the greatest extent under the condition that high-temperature active coke is not ignited.
Drawings
FIG. 1 is a schematic view of the direction of airflow in a normal operation state of the present invention.
FIG. 2 is a schematic view of the direction of airflow in an accident situation according to the present invention.
Detailed Description
Specific embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the rapid cooling system for the analytic tower in the active coke flue gas purification system of the invention comprises a pipeline arranged in the analytic tower system, a hot blast stove 2, a diffusing bypass 3 and a high-temperature heat exchange fan 8 which are arranged on the pipeline, and a diffusing valve 4 arranged on the diffusing bypass 3, and is characterized in that a high-temperature fan outlet cut-off valve 13 is arranged on the rear pipe section of the high-temperature heat exchange fan 8, an accident exhaust pipeline 12 is arranged between the high-temperature fan outlet cut-off valve 13 and the high-temperature heat exchange fan 8, an accident exhaust valve 11 is arranged on the accident exhaust pipeline 12, an accident air inlet bypass 10 is arranged at the inlet of the high-temperature fan 8 and the high-temperature fan outlet cut-off valve 13, an accident air inlet valve 9 is arranged on the accident air bypass 10, a cooling air inlet pipeline 5 is arranged on the front pipe section of the high-temperature fan 8, a cooling air inlet valve 6 is arranged on the cooling air inlet pipeline 5, a high-temperature fan inlet cut-off valve 7 is arranged between the cooling air inlet pipeline 5 and the high-temperature fan 8,
one end of the accident air inlet bypass 10 is connected with a pipe section between the high-temperature fan inlet cut-off valve 7 and the high-temperature fan 8, and the other end is connected with a rear pipe section of the high-temperature fan outlet cut-off valve 13.
The high-temperature fan inlet cut-off valve 7, the high-temperature fan outlet cut-off valve 13, the cooling air inlet valve 6, the accident air inlet valve 9 and the accident exhaust valve 11 adopt electric cut-off valves, electric butterfly valves, manual cut-off valves or manual butterfly valves.
The method for utilizing the rapid cooling system for the analytic tower in the active coke flue gas purification system is characterized by comprising the following steps:
(1) In a normal working state, the cooling gas inlet valve 6, the accident gas inlet valve 9 and the accident gas outlet valve 11 are closed, the diffusing valve 4, the high-temperature fan inlet cut-off valve 7 and the high-temperature fan outlet cut-off valve 13 are opened, and after the high-temperature flue gas generated by the hot blast stove 2 is heated by the analysis tower 1 to analyze active coke, a part of the flue gas is diffused by the diffusing bypass 3, and a part of the flue gas is pressurized by the high-temperature fan 8 and then returned to the hot blast stove 2 for recycling;
(2) In an accident state, when the analysis tower 1 needs to be cooled, the bleeding valve 4, the high-temperature fan inlet cut-off valve 7 and the high-temperature fan outlet cut-off valve 13 are closed, and meanwhile, the cooling air inlet valve 6, the accident air inlet valve 9 and the accident exhaust valve 11 are opened, and low-temperature cooling air firstly enters the analysis tower 1 through the cooling air inlet pipeline 5, exchanges heat through the analysis tower 1 and then is discharged into the atmosphere through the outlet of the high-temperature fan 8.
Under normal working conditions, the inlet of the high-temperature heat exchange fan 8 is high-temperature gas with the temperature of more than 300 ℃, the high-temperature gas is pressurized by the high-temperature heat exchange fan 8 and is mixed with high-temperature gas generated by the heating furnace 2 to form high-temperature gas with the temperature of 500 ℃, the oxygen content of the high-temperature gas is strictly controlled, and even if leakage occurs, the high-temperature gas can not influence active coke in the analysis tower 1. The high temperature gas with strict oxygen control heats the desorption tower 1. When leakage occurs between the active coke bed and the heating gas pipeline, if the high-temperature heat exchange fan 8 is adopted to blow in ambient air into the analysis tower 1 for cooling, the ambient air is led to enter the active coke bed, so that a fire accident occurs; if naturally cooled, it takes a long time.
The invention utilizes the existing high-temperature heat exchange fan 8 of the system, and only adds a bypass and a valve. Under an accident state, the opening and closing of each valve in the system are controlled to change the flowing directions of the air source and the air, so that the air pipeline system is in a negative pressure state relative to the active coke bed layer of the analytical tower 1, the purpose that cooling air cannot enter the high-temperature active coke bed layer is achieved, the active coke bed layer is prevented from being contacted with air, and the purpose of rapid and safe cooling of the analytical tower 1 is achieved.
The invention can ensure that the active coke bed layer does not enter air, high-temperature active coke does not contact oxygen and does not catch fire, and the analytical tower 1 can be rapidly cooled in an accident state.
Claims (2)
1. A method for utilizing a rapid cooling system of a resolving tower in an active coke flue gas purification system is characterized in that the rapid cooling system of the resolving tower in the active coke flue gas purification system comprises a pipeline arranged in the resolving tower system, a hot blast stove, a diffusing bypass and a high-temperature heat exchange fan which are arranged on the pipeline, a diffusing valve arranged on the diffusing bypass, a high-temperature fan outlet cut-off valve arranged on the rear pipe section of the high-temperature heat exchange fan, an accident exhaust pipeline arranged between the high-temperature fan outlet cut-off valve and the high-temperature heat exchange fan, an accident exhaust valve arranged on the accident exhaust pipeline, an accident air inlet bypass arranged at the inlet of the high-temperature fan and the cut-off valve of the high-temperature fan outlet, an accident air inlet valve arranged on the accident air inlet bypass, a cooling air inlet pipeline arranged on the front pipe section of the high-temperature fan, a cooling air inlet valve arranged on the cooling air inlet pipeline, a high-temperature fan inlet valve arranged between the cooling air inlet pipeline and the high-temperature fan,
one end of the accident air inlet bypass is connected with a pipe section between the high-temperature fan inlet cut-off valve and the high-temperature fan, and the other end of the accident air inlet bypass is connected with a rear pipe section of the high-temperature fan outlet cut-off valve;
the method comprises the following steps:
(1) In a normal working state, a cooling gas inlet valve, an accident gas inlet valve and an accident gas exhaust valve are closed, a diffusing valve, a high-temperature fan inlet cut-off valve and a high-temperature fan outlet cut-off valve are opened, high-temperature flue gas generated by the hot blast stove is heated by an analysis tower to analyze active coke, a part of the flue gas is diffused by a diffusing bypass, and a part of the flue gas is pressurized by the high-temperature fan and returned to the hot blast stove for recycling;
(2) In an accident state, when the analysis tower is required to be cooled, the bleeding valve, the high-temperature fan inlet cut-off valve and the high-temperature fan outlet cut-off valve are closed, and meanwhile, the cooling air inlet valve, the accident air inlet valve and the accident exhaust valve are opened, and low-temperature cooling air firstly enters the analysis tower through the cooling air inlet pipeline and is discharged into the atmosphere through the high-temperature fan outlet after heat exchange of the analysis tower.
2. The method for utilizing the rapid cooling system for the resolution tower in the active coke flue gas purification system according to claim 1, wherein the high-temperature fan inlet cut-off valve, the high-temperature fan outlet cut-off valve, the cooling air inlet valve, the accident air inlet valve and the accident exhaust valve adopt electric cut-off valves, electric butterfly valves, manual cut-off valves or manual butterfly valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101963.3A CN109621930B (en) | 2019-02-01 | 2019-02-01 | Rapid cooling system and method for analytic tower in active coke flue gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101963.3A CN109621930B (en) | 2019-02-01 | 2019-02-01 | Rapid cooling system and method for analytic tower in active coke flue gas purification system |
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| Publication Number | Publication Date |
|---|---|
| CN109621930A CN109621930A (en) | 2019-04-16 |
| CN109621930B true CN109621930B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910101963.3A Active CN109621930B (en) | 2019-02-01 | 2019-02-01 | Rapid cooling system and method for analytic tower in active coke flue gas purification system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112705009B (en) * | 2019-10-25 | 2022-10-04 | 中冶长天国际工程有限责任公司 | Cooling fan control method and device for analytic tower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180613A (en) * | 1988-12-28 | 1990-07-13 | Nippon Sanso Kk | Method and apparatus for regenerating adsorber |
| CN101653687A (en) * | 2009-07-03 | 2010-02-24 | 瓮福（集团）有限责任公司 | Nitrogen heat cycle method of active coke dry-process desulfurizer |
| CN102580705A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Comprehensive heat energy utilizing type active coke purifying and regenerating process system and active coke purifying and regenerating process method |
| CN205269291U (en) * | 2015-12-10 | 2016-06-01 | 上海克硫环保科技股份有限公司 | Active burnt regenerative heating system |
| CN108543389A (en) * | 2018-06-28 | 2018-09-18 | 中冶北方（大连）工程技术有限公司 | Active coke desulphurizing denitrification apparatus Analytic Tower is quickly cooled down system and method |
-
2019
- 2019-02-01 CN CN201910101963.3A patent/CN109621930B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180613A (en) * | 1988-12-28 | 1990-07-13 | Nippon Sanso Kk | Method and apparatus for regenerating adsorber |
| CN101653687A (en) * | 2009-07-03 | 2010-02-24 | 瓮福（集团）有限责任公司 | Nitrogen heat cycle method of active coke dry-process desulfurizer |
| CN102580705A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Comprehensive heat energy utilizing type active coke purifying and regenerating process system and active coke purifying and regenerating process method |
| CN205269291U (en) * | 2015-12-10 | 2016-06-01 | 上海克硫环保科技股份有限公司 | Active burnt regenerative heating system |
| CN108543389A (en) * | 2018-06-28 | 2018-09-18 | 中冶北方（大连）工程技术有限公司 | Active coke desulphurizing denitrification apparatus Analytic Tower is quickly cooled down system and method |
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| CN109621930A (en) | 2019-04-16 |
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