CN111569852A - Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat - Google Patents
Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat Download PDFInfo
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- CN111569852A CN111569852A CN202010495639.7A CN202010495639A CN111569852A CN 111569852 A CN111569852 A CN 111569852A CN 202010495639 A CN202010495639 A CN 202010495639A CN 111569852 A CN111569852 A CN 111569852A
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- active coke
- desorption
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- heater
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- 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
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
Abstract
The invention relates to an efficient heat transfer active coke desulfurization and denitrification desorption device, which comprises a conveying unit, a desorption unit, a cooling unit and a gas unit which are integrated in a device body; the conveying unit consists of a feeding air locking valve, a distributing device, a bottom material collector and a discharging air locking valve; the desorption unit consists of a hot air inlet, a dividing wall heater and a hot air outlet; the cooling unit consists of a cold air inlet, a partition wall cooler and a cold air outlet; the gas unit consists of a nitrogen inlet, an automatic valve, an emergency protective gas spray pipe and a tail gas outlet; the device can ensure the safety and stability of the desorption process while realizing efficient heat transfer by active coke desorption, and has compact structure and good safety.
Description
Technical Field
The invention relates to the technical field of activated coke flue gas purification, in particular to an efficient heat transfer activated coke desulfurization and denitrification desorption device.
Background
The flue gas purification technology of desulfurization and denitrification by active coke has the advantages of high-efficiency desulfurization, sulfur resource recovery, low-temperature denitration without temperature rise, no secondary pollution of waste solids, waste water and the like, and is popularized and applied in a certain range in the fields of high-sulfur low-nitrogen flue gas treatment such as sintering, boilers and the like.
In the flue gas purification technology of desulfurization and denitrification of active coke, a desorption device heats the active coke through high-temperature flue gas to activate and regenerate the active coke, and sulfuric acid adsorbed by the active coke reacts with the active coke to generate SO2The reaction temperature of the gas can reach 400 ℃ in the process, the temperature range of active coke combustion is reached, so the desorption process must be carried out under the condition of isolating oxygen, and the key and difficult point of active coke desorption is how to improve the heat transfer coefficient in the processes of active coke desorption heating and cooling on the premise of ensuring safety.
Disclosure of Invention
The invention provides an active coke desulfurization and denitrification desorption device capable of efficiently transferring heat, which can ensure the safety and stability of a desorption process while realizing efficient heat transfer by active coke desorption, and has a compact structure and good safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
an active coke desulfurization and denitrification desorption device with high-efficiency heat transfer comprises a conveying unit, a desorption unit, a cooling unit and a gas unit which are integrated in a device body; the conveying unit consists of a feeding air locking valve, a distributing device, a bottom material collector and a discharging air locking valve; the desorption unit consists of a hot air inlet, a dividing wall heater and a hot air outlet; the cooling unit consists of a cold air inlet, a partition wall cooler and a cold air outlet; the gas unit consists of a nitrogen inlet, an automatic valve, an emergency protective gas spray pipe and a tail gas outlet; the top of the device body is provided with an active coke inlet which is connected with the bottom end of an active coke input pipeline, the top end of the active coke input pipeline is connected with a feeding air-lock valve, and a distributor is arranged in the device body below the active coke inlet; the feed opening of the distributing device is respectively connected with the inlets at the tops of a plurality of heater heat exchange tubes in the dividing wall heater, and the outlets at the bottoms of the heater heat exchange tubes are connected with the middle buffer section of the device body; the bottom of the shell of the dividing wall heater is provided with a hot air inlet, and the top of the shell of the dividing wall heater is provided with a hot air outlet; the top inlets of a plurality of cooler heat exchange tubes in the dividing wall cooler are connected with the middle buffer section of the device body, the bottom outlets of the cooler heat exchange tubes are connected with a material collector, the material collector is connected with an active coke output pipeline, and the bottom end of the active coke output pipeline is connected with a discharge air-lock valve; the middle buffer section of the device body is provided with an emergency protective gas spray pipe, a nitrogen inlet is formed in the device body corresponding to the bottom of the cooling unit, the emergency protective gas spray pipe and the nitrogen inlet are respectively connected with a nitrogen pipeline, and an automatic valve is arranged on the nitrogen pipeline connected with the emergency protective gas spray pipe; the top of the device body is provided with a tail gas outlet.
The temperature detection device is arranged in the device body and is controlled by the control system and the automatic valve in an interlocking manner.
The automatic valve is an electric quick-opening valve or a pneumatic quick-opening valve.
The outer surface of the device body is provided with a heat insulation layer.
The feeding air locking valve and the discharging air locking valve are sealed by inert gas, and the discharging amount can be adjusted; the feeding air locking valve and the discharging air locking valve are respectively controlled in an interlocking way through the control system and the temperature detection device.
Fins and wind folding plates are arranged in the shell pass of the dividing wall heater, fins and wind folding plates are arranged in the shell pass of the dividing wall cooler, and the wind folding plates in different shell passes are arranged in a staggered mode along the height direction of the dividing wall heater or the dividing wall cooler.
The emergency protection gas spray pipes are multiple and are evenly arranged along the circumferential direction of the device body.
Compared with the prior art, the invention has the beneficial effects that:
1) the device has compact structure and convenient operation, and saves materials and floor area;
2) the dividing wall heater and the dividing wall cooler are both provided with the air deflector and the fins, so that the heat exchange effect is good, the desorption capacity is strong, and the energy is saved;
3) the device can be protected by filling nitrogen rapidly in an accident state, the safety is good, and the normal operation of the device is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an active coke desulfurization and denitrification desorption device with high heat transfer efficiency.
In the figure: 1. the system comprises a conveying unit 1-1, a feeding air locking valve 1-2, a distributor 1-3, a collector 1-4, a discharging air locking valve 2, a desorption unit 2-1, a hot air inlet 2-2, a wind folding plate 2-3, a partition wall heater 2-4, a hot air outlet 3, a cooling unit 3-1, a cold air inlet 3-2, a wind folding plate 3-3, a partition wall cooler 3-4, a cold air outlet 4, a gas unit 4-1, a nitrogen inlet 4-2, an automatic valve 4-3, an emergency protection gas spray pipe 4-4 and a tail gas outlet 4-4
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, the active coke desulfurization and denitrification desorption device with high heat transfer efficiency comprises a conveying unit 1, a desorption unit 2, a cooling unit 3 and a gas unit 4 which are integrated in a device body; the conveying unit 1 consists of a feeding air-lock valve 1-1, a distributing device 1-2, a bottom material collector 1-3 and a discharging air-lock valve 1-4; the desorption unit 2 consists of a hot air inlet 2-1, a dividing wall heater 2-3 and a hot air outlet 2-4; the cooling unit 3 consists of a cold air inlet 3-1, a partition wall cooler 3-3 and a cold air outlet 3-4; the gas unit 4 consists of a nitrogen inlet 4-1, an automatic valve 4-2, an emergency protection gas spray pipe 4-3 and a tail gas outlet 4-4; the top of the device body is provided with an active coke inlet which is connected with the bottom end of an active coke input pipeline, the top end of the active coke input pipeline is connected with a feeding air-lock valve 1-1, and a distributor 1-2 is arranged in the device body below the active coke inlet; the feed openings of the distributing device 1-2 are respectively connected with inlets at the tops of a plurality of heater heat exchange tubes in the dividing wall heaters 2-3, and outlets at the bottoms of the heater heat exchange tubes are connected with a middle buffer section of the device body; the bottom of the shell of the dividing wall heater 2-3 is provided with a hot air inlet 2-1, and the top of the shell of the dividing wall heater 2-3 is provided with a hot air outlet 2-4; inlets at the tops of a plurality of cooler heat exchange tubes in the dividing wall cooler 3-3 are connected with a middle buffer section of the device body, outlets at the bottoms of the cooler heat exchange tubes are connected with a material collector 1-3, the material collector 1-3 is connected with an active coke output pipeline, and the bottom end of the active coke output pipeline is connected with a material discharging and air locking valve 1-4; an emergency protective gas spray pipe 4-3 is arranged at the middle buffer section of the device body, a nitrogen inlet 4-1 is arranged on the device body corresponding to the bottom of the cooling unit 3, the emergency protective gas spray pipe 4-3 and the nitrogen inlet 4-1 are respectively connected with a nitrogen pipeline, and an automatic valve 4-2 is arranged on the nitrogen pipeline connected with the emergency protective gas spray pipe; the top of the device body is provided with a tail gas outlet 4-4.
The device body is internally provided with a temperature detection device, and the temperature detection device is interlocked and controlled with the automatic valve 4-2 through a control system.
The automatic valve 4-2 is an electric quick-opening valve or a pneumatic quick-opening valve.
The outer surface of the device body is provided with a heat insulation layer.
The feeding air locking valve 1-1 and the discharging air locking valve 1-4 are sealed by inert gas, and the discharging amount can be adjusted; the feeding air-lock valve 1-1 and the discharging air-lock valve 1-4 are respectively controlled by the control system and the temperature detection device in an interlocking way.
Fins and air deflector 2-2 are arranged in the shell pass of the dividing wall heater 2-3, fins and air deflector 3-2 are arranged in the shell pass of the dividing wall cooler 3-3, and the air deflectors 2-2 and 3-2 in different shell passes are arranged in a staggered mode along the height direction of the dividing wall heater 2-3 or the dividing wall cooler 3-3.
The emergency protection gas spray pipes 4-3 are multiple and are uniformly arranged along the circumferential direction of the device body.
When the granular active coke is desorbed, the active coke is firstly conveyed into the device body through a feeding air-lock valve 1-1 at the top of the device and then uniformly enters a desorption unit 2 through a distributor 1-2, the active coke passes through a tube pass in a dividing wall heater 2-3 and exchanges heat with hot air passing through a shell pass, and the temperature is raised to more than 400 ℃. Because the air deflector 2-2 and the fins are arranged in the shell pass of the dividing wall heater 2-3, hot air flows back in the shell pass of the dividing wall heater 2-3, the turbulence is strong, and the heat exchange effect is good; at high temperature, the sulfuric acid adsorbed by the active coke reacts with the active coke to generate SO2A gas. During normal operation, the automatic valve 4-2 in the gas unit 4 is closed, the carrier gas entering from the nitrogen inlet 4-1 flows upwards through the cooling unit 3, and SO is contained in the carrier gas generated during desorption2CO and CO2The tail gas is discharged from a tail gas outlet 4-4 through a desorption unit 2,carrying out further processing; after desorption and desorption of adsorbed components at high temperature, the active coke enters a middle buffer section of the device and then enters a cooling unit 3 at the lower part, the active coke passes through a tube pass in a dividing wall cooler 3-3 and exchanges heat with cold air passing through a shell pass, the temperature is reduced to about 120 ℃, and due to the fact that a wind deflector 3-2 and fins are arranged in the shell pass of the dividing wall cooler 3-3, the cold air flows back and forth in the shell pass of the dividing wall cooler 3-3, turbulence is strong, and the heat exchange effect is good; the cooled active coke enters a material collector 1-3 of the conveying unit, is discharged out of the device through a discharge air-lock valve 1-4 and is put into a flue gas purification system.
When a temperature sensor arranged in the device body detects that the temperature in the device continuously rises and exceeds the alarm temperature, the feeding air-locking valve 1-1 is closed, the discharging air-locking valve 1-4 discharges at full speed, the automatic valve 4-2 in the gas unit 4 is opened, and a large amount of nitrogen enters the middle buffer section through the emergency protection gas spray pipe 4-3 to rapidly charge nitrogen for protection.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The high-efficiency heat-transfer active coke desulfurization and denitrification desorption device is characterized by comprising a conveying unit, a desorption unit, a cooling unit and a gas unit which are integrated in a device body; the conveying unit consists of a feeding air locking valve, a distributing device, a bottom material collector and a discharging air locking valve; the desorption unit consists of a hot air inlet, a dividing wall heater and a hot air outlet; the cooling unit consists of a cold air inlet, a partition wall cooler and a cold air outlet; the gas unit consists of a nitrogen inlet, an automatic valve, an emergency protective gas spray pipe and a tail gas outlet; the top of the device body is provided with an active coke inlet which is connected with the bottom end of an active coke input pipeline, the top end of the active coke input pipeline is connected with a feeding air-lock valve, and a distributor is arranged in the device body below the active coke inlet; the feed opening of the distributing device is respectively connected with the inlets at the tops of a plurality of heater heat exchange tubes in the dividing wall heater, and the outlets at the bottoms of the heater heat exchange tubes are connected with the middle buffer section of the device body; the bottom of the shell of the dividing wall heater is provided with a hot air inlet, and the top of the shell of the dividing wall heater is provided with a hot air outlet; the top inlets of a plurality of cooler heat exchange tubes in the dividing wall cooler are connected with the middle buffer section of the device body, the bottom outlets of the cooler heat exchange tubes are connected with a material collector, the material collector is connected with an active coke output pipeline, and the bottom end of the active coke output pipeline is connected with a discharge air-lock valve; the middle buffer section of the device body is provided with an emergency protective gas spray pipe, a nitrogen inlet is formed in the device body corresponding to the bottom of the cooling unit, the emergency protective gas spray pipe and the nitrogen inlet are respectively connected with a nitrogen pipeline, and an automatic valve is arranged on the nitrogen pipeline connected with the emergency protective gas spray pipe; the top of the device body is provided with a tail gas outlet.
2. The apparatus according to claim 1, wherein a temperature detection device is arranged in the apparatus body, and the temperature detection device is interlocked with the automatic valve through a control system.
3. The apparatus as claimed in claim 1 or 2, wherein the automatic valve is an electric quick-opening valve or a pneumatic quick-opening valve.
4. The active coke desulfurization and denitrification desorption device with high heat transfer efficiency as claimed in claim 1 or 2, wherein the outer surface of the device body is provided with a heat insulation layer.
5. The high-efficiency heat-transfer active coke desulfurization and denitrification desorption device as claimed in claim 1, wherein the feeding air-lock valve and the discharging air-lock valve are sealed by inert gas, and the discharging amount can be adjusted; the feeding air locking valve and the discharging air locking valve are respectively controlled in an interlocking way through the control system and the temperature detection device.
6. The apparatus as claimed in claim 1, wherein fins and wind deflector plates are arranged in the shell pass of the partition heater, fins and wind deflector plates are arranged in the shell pass of the partition cooler, and wind deflector plates in different shell passes are staggered along the height direction of the partition heater or the partition cooler.
7. The active coke desulfurization and denitrification desorption device with high heat transfer efficiency according to claim 1, wherein the emergency protective gas spray pipes are uniformly arranged along the circumferential direction of the device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010495639.7A CN111569852A (en) | 2020-06-03 | 2020-06-03 | Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010495639.7A CN111569852A (en) | 2020-06-03 | 2020-06-03 | Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat |
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| CN111569852A true CN111569852A (en) | 2020-08-25 |
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| CN202010495639.7A Pending CN111569852A (en) | 2020-06-03 | 2020-06-03 | Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085459A (en) * | 2023-10-20 | 2023-11-21 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature adsorption purification device |
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| CN103418360A (en) * | 2013-08-08 | 2013-12-04 | 上海克硫环保科技股份有限公司 | Regenerative device and method for desulfurized and denitrified active coke |
| CN108562179A (en) * | 2018-04-28 | 2018-09-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of spiral jet double-tube heat exchanger and its working method |
| CN109621632A (en) * | 2019-01-23 | 2019-04-16 | 北京明泰来环保科技有限公司 | A kind of adsorption/desorption catalyzing burning waste gas purification device containing security system |
| CN110743519A (en) * | 2019-11-11 | 2020-02-04 | 中国科学院山西煤炭化学研究所 | Desulfurization and denitrification activated carbon/carbon-based catalyst regeneration equipment and method |
| CN212492971U (en) * | 2020-06-03 | 2021-02-09 | 中冶焦耐(大连)工程技术有限公司 | Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat |
-
2020
- 2020-06-03 CN CN202010495639.7A patent/CN111569852A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418360A (en) * | 2013-08-08 | 2013-12-04 | 上海克硫环保科技股份有限公司 | Regenerative device and method for desulfurized and denitrified active coke |
| CN108562179A (en) * | 2018-04-28 | 2018-09-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of spiral jet double-tube heat exchanger and its working method |
| CN109621632A (en) * | 2019-01-23 | 2019-04-16 | 北京明泰来环保科技有限公司 | A kind of adsorption/desorption catalyzing burning waste gas purification device containing security system |
| CN110743519A (en) * | 2019-11-11 | 2020-02-04 | 中国科学院山西煤炭化学研究所 | Desulfurization and denitrification activated carbon/carbon-based catalyst regeneration equipment and method |
| CN212492971U (en) * | 2020-06-03 | 2021-02-09 | 中冶焦耐(大连)工程技术有限公司 | Active coke desulfurization and denitrification desorption device capable of efficiently transferring heat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117085459A (en) * | 2023-10-20 | 2023-11-21 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature adsorption purification device |
| CN117085459B (en) * | 2023-10-20 | 2024-02-13 | 中国华能集团清洁能源技术研究院有限公司 | Low-temperature adsorption purification device |
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