CN204261560U - A kind of belt type roasting machine pelletizing gas cleaning adsorption tower - Google Patents

A kind of belt type roasting machine pelletizing gas cleaning adsorption tower Download PDF

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Publication number
CN204261560U
CN204261560U CN201420721327.3U CN201420721327U CN204261560U CN 204261560 U CN204261560 U CN 204261560U CN 201420721327 U CN201420721327 U CN 201420721327U CN 204261560 U CN204261560 U CN 204261560U
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adsorption tower
activated coke
bed
flue gas
belt type
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王代军
张福明
李长兴
张建
黄文斌
易毅辉
彭坤乾
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Beijing Shougang International Engineering Technology Co Ltd
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Beijing Shougang International Engineering Technology Co Ltd
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Abstract

A kind of belt type roasting machine pelletizing gas cleaning adsorption tower, belongs to belt type roasting machine pelletizing flue gases purification field.Comprise activated coke and add entrance (1), exhanst gas outlet (2), flue gas transition chamber (3), adsorption tower secondary bed (4), plenum chamber (5), activated coke dump skip (6), adsorption tower one-level bed (7), smoke inlet (8), dividing plate (9), activated coke filter plate (10).Adsorption tower is divided into five layers from left to right.Advantage is, belongs to dry FGD process, non-secondary pollution, non-corrosiveness, and activated coke resolves the high concentration SO discharged 2gas can be produced sulfuric acid or prepare sulphur, and broken Jiaozhuo of generation is fuel.Pelletizing gas cleaning adsorption tower, not by exhaust gas volumn and SO 2fluctuation of concentration affects, and especially can ensure SO 2concentration reaches 3000mg/Nm 3time qualified discharge, security of system fault-free, possesses desulphurization and denitration complex function.

Description

A kind of belt type roasting machine pelletizing gas cleaning adsorption tower
Technical field
The utility model belongs to belt type roasting machine pelletizing flue gases purification field, in particular, provides a kind of simple, reliable pelletizing gas cleaning adsorption tower, has desulphurization and denitration function, can adapt to exhaust gas volumn and SO simultaneously to pelletizing flue gas 2fluctuation of concentration.
Background technology
Produce a large amount of containing SO in pellet roasting process 2, NOx flue gas, to environment.National environmental protection policy proposes new standard to pelletizing fume emission, specifies NOx emission concentration, for this reason, can not carry out single desulfurization process again by present mode.
Flue gas desulfurization is control SO at present 2the Main Means polluted, based on semidry method, wet method, desulfurizing agent mainly contains calcium class, Ammonia, organic amine etc.Flue gas desulfurization technique is of a great variety, at present, has started application in pelletizing industry, but stable, desulfurized effect is desirable, it is little to adapt to the device of pelletizing production operating mode.With the sulfur removal technology that calcium class is desulfurizing agent, there is release CO 2, large, the burn into accessory substance of water consumption cannot utilize and cause bulk deposition to cause secondary pollution, CaSO 3the problem such as the difficult and Sulphur ressource waste of decomposition, waste water., there is the problems such as the low and waste water of the escape of ammonia, burn into accessory substance sulphur ammonium value is difficult in ammonia process.Amine process, exists that investment is high, desulfurizing agent price is high, desulfuration efficiency is low and the problem such as corrosion.Along with going deep into of energy-saving and emission-reduction and circular economy concept, semidry method and wet desulfurizing process, be restricted to a great extent.
Active coke dry-method desulfuration technique adopts activated coke as adsorbent, and technical process does not consume water, and activated coke recycles.There is desulphurization and denitration function, the SO of recovery 2the concentrated sulfuric acid or sulphur can be prepared into.Active coke dry-method desulfuration technique, Taiyuan Iron and Steel Co. sintering is applied at home, respond well.
, there is greatest differences with sintering in belt type roasting machine pelletizing production operating mode, flue gas pollutant composition and content.Further, the burnt dry process of Taiyuan Iron and Steel Co. sintering activity, can not treatment S O 2concentration is more than 3000mg/Nm 3flue gas.
Therefore, researching and developing a kind of belt type roasting machine pelletizing gas cleaning adsorption tower is needing when business, meanwhile, meets smoke treatment fluctuation and SO 2concentration is more than 3000mg/Nm 3flue gas, for pelletizing production utilizes low-quality, high-sulfur ore deposit to lay the foundation in a large number, and then reduce pelletizing production cost.
Summary of the invention
The purpose of this utility model is to provide a kind of belt type roasting machine pelletizing gas cleaning adsorption tower, is a kind of simple, reliable pelletizing gas cleaning adsorption tower, has desulphurization and denitration function, can adapt to exhaust gas volumn and SO simultaneously to pelletizing flue gas 2fluctuation of concentration.
The utility model gas cleaning adsorption tower, comprises activated coke and adds entrance 1, exhanst gas outlet 2, flue gas transition chamber 3, adsorption tower secondary bed 4, plenum chamber 5, activated coke dump skip 6, adsorption tower one-level bed 7, smoke inlet 8, dividing plate 9, activated coke filter plate 10.
Adsorption tower is divided into five layers from left to right, is followed successively by flue gas transition chamber 3, adsorption tower one-level bed 7 and adsorption tower secondary bed 4, plenum chamber 5 and exhanst gas outlet 2, adsorption tower one-level bed 7 and adsorption tower secondary bed 4, flue gas transition chamber 3.Adsorption tower secondary bed 4 upper end has two activated coke to add entrance 1, and tower totally four activated coke adds entrance 1; Adsorption tower one-level bed 7, has two activated coke dump skips, 6, tower totally four activated coke dump skips 6.Smoke inlet 8 is positioned at plenum chamber 5 lower end, and exhanst gas outlet 2 is on plenum chamber 5 top; Between plenum chamber 5 and exhanst gas outlet 2, cut off by dividing plate 9, dividing plate 9 level.
Adsorption tower body is cuboid.Activated coke relies on gravity to flow from the top down, and flue gas flows from bottom to top.Cut off by activated coke filter plate 10 between adsorption tower secondary bed 4 and adsorption tower one-level bed 7, activated coke filter plate 10 level; The effect of activated coke filter plate 10 can ensure that activated coke is passed through from the top down, flue gas throughput < 2% from bottom to top.
Belt type roasting machine pelletizing flue gas enters into plenum chamber 5 from smoke inlet 8, evenly flow to both sides adsorption tower one-level bed 7, there is physical reaction, part SO in the activated coke (flowing from the activated coke of adsorption tower secondary bed 4) of flue gas and adsorption tower one-level bed 7 li 2adsorbed.To enter flue gas transition chamber 3 through the flue gas of primary purification, then through adsorption tower secondary bed 4, further physical reaction occurs with fresh activity Jiao (adding entrance 1 from activated coke to add) of adsorption tower secondary bed 4 li; Add NH at adsorption tower secondary bed 4 simultaneously 3carry out NO_x removal, activated coke plays catalyst action in denitration reaction.Flue gas after twice purification is discharged from exhanst gas outlet 2.Adsorption tower one-level bed 7 li of reacted activated coke are discharged by activated coke dump skip 6, and be transported to Analytic Tower and resolve, the activated coke after parsing recycles.
The utility model is applicable to the flue gas desulfurization of belt type roasting machine pelletizing, denitration is administered.
1. non-secondary pollution, non-corrosiveness
Smoke treating method of the present utility model, belongs to dry FGD process, non-secondary pollution, non-corrosiveness, and activated coke resolves the high concentration SO discharged 2gas can be produced sulfuric acid or prepare sulphur, and broken Jiaozhuo of generation is fuel.
2. flue gas composite governance
NH is added at adsorption tower secondary bed 4 3carry out NO_x removal, desulphurization and denitration carries out in same set of device, has desulphurization and denitration composite governance function.
3. without CO 2release
Adopt activated coke as adsorbent, without CO in absorbent preparation process 2produce.
4. adapt to exhaust gas volumn and SO 2fluctuation of concentration
This adsorption tower is made up of twin-stage pattern, not by exhaust gas volumn and SO 2fluctuation of concentration affects, and especially can ensure SO 2concentration reaches 3000mg/Nm 3time qualified discharge, security of system fault-free.
Accompanying drawing explanation
Fig. 1 is the utility model front view.Wherein, activated coke adds entrance 1, exhanst gas outlet 2, flue gas transition chamber 3, adsorption tower secondary bed 4, plenum chamber 5, activated coke dump skip 6, adsorption tower one-level bed 7, smoke inlet 8, dividing plate 9, activated coke filter plate 10.
Fig. 2 is the utility model right view.Wherein, activated coke adds entrance 1, exhanst gas outlet 2, flue gas transition chamber 3, activated coke dump skip 6, smoke inlet 8.
Detailed description of the invention
The utility model the utility model gas cleaning adsorption tower, comprises activated coke and adds entrance 1, exhanst gas outlet 2, flue gas transition chamber 3, adsorption tower secondary bed 4, plenum chamber 5, activated coke dump skip 6, adsorption tower one-level bed 7, smoke inlet 8, dividing plate 9, activated coke filter plate 10.Adsorption tower is divided into five layers from left to right, is followed successively by flue gas transition chamber 3, adsorption tower one-level bed 7 and adsorption tower secondary bed 4, plenum chamber 5 and exhanst gas outlet 2, adsorption tower one-level bed 7 and adsorption tower secondary bed 4, flue gas transition chamber 3.Adsorption tower secondary bed 4 upper end has two activated coke to add entrance 1, and tower totally four activated coke adds entrance 1; Adsorption tower one-level bed 7, has two activated coke dump skips, 6, tower totally four activated coke dump skips 6.Smoke inlet 8 is positioned at plenum chamber 5 lower end, and exhanst gas outlet 2 is on plenum chamber 5 top; Between plenum chamber 5 and exhanst gas outlet 2, cut off by dividing plate 9, dividing plate 9 level.
Belt type roasting machine pelletizing flue gas enters into plenum chamber 5 from smoke inlet 8, evenly flow to both sides adsorption tower one-level bed 7, there is physical reaction, part SO in the activated coke (flowing from the activated coke of adsorption tower secondary bed 4) of flue gas and adsorption tower one-level bed 7 li 2adsorbed.To enter flue gas transition chamber 3 through the flue gas of primary purification, then through adsorption tower secondary bed 4, further physical reaction occurs with fresh activity Jiao (adding entrance 1 from activated coke to add) of adsorption tower secondary bed 4 li; Add NH at adsorption tower secondary bed 4 simultaneously 3carry out NO_x removal, activated coke plays catalyst action in denitration reaction.Flue gas after twice purification is discharged from exhanst gas outlet 2.Between plenum chamber 5 and exhanst gas outlet 2, cut off by dividing plate 9.Between adsorption tower secondary bed 4 and adsorption tower one-level bed 7, cut off by activated coke filter plate 10; The effect of activated coke filter plate 10 can ensure that activated coke is passed through from the top down, flue gas throughput < 2% from bottom to top.Adsorption tower one-level bed 7 li of reacted activated coke are discharged by activated coke dump skip 6, are transported to Analytic Tower and carry out parse cycle utilization.

Claims (3)

1. a belt type roasting machine pelletizing gas cleaning adsorption tower, it is characterized in that, comprise activated coke and add entrance (1), exhanst gas outlet (2), flue gas transition chamber (3), adsorption tower secondary bed (4), plenum chamber (5), activated coke dump skip (6), adsorption tower one-level bed (7), smoke inlet (8), dividing plate (9), activated coke filter plate (10); Adsorption tower is divided into five layers from left to right, is followed successively by flue gas transition chamber (3), adsorption tower one-level bed (7) and adsorption tower secondary bed (4), plenum chamber (5) and exhanst gas outlet (2), adsorption tower one-level bed (7) and adsorption tower secondary bed (4), flue gas transition chamber (3); Adsorption tower secondary bed (4) upper end has two activated coke to add entrance (1), and tower totally four activated coke adds entrance (1); Adsorption tower one-level bed (7), has two activated coke dump skips (6), a tower totally four activated coke dump skips (6).Smoke inlet (8) is positioned at plenum chamber (5) lower end, and exhanst gas outlet (2) is on plenum chamber (5) top; Cut off by dividing plate (9) between plenum chamber (5) and exhanst gas outlet (2), dividing plate (9) level.
2. adsorption tower according to claim 1, it is characterized in that, adsorption tower is cuboid.
3. adsorption tower according to claim 1, is characterized in that, cut off between adsorption tower secondary bed (4) and adsorption tower one-level bed (7) by activated coke filter plate (10).
CN201420721327.3U 2014-11-26 2014-11-26 A kind of belt type roasting machine pelletizing gas cleaning adsorption tower Active CN204261560U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106039926A (en) * 2016-07-18 2016-10-26 重集团大连工程建设有限公司 Flue gas low-resistance desulfurization and denitrification device and desulfurization and denitrification method
CN111298593A (en) * 2018-12-12 2020-06-19 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke
CN111603890A (en) * 2019-02-26 2020-09-01 中国石化工程建设有限公司 Adsorption tower for preventing dust deposition in air chamber and method for treating flue gas by using adsorption tower

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106039926A (en) * 2016-07-18 2016-10-26 重集团大连工程建设有限公司 Flue gas low-resistance desulfurization and denitrification device and desulfurization and denitrification method
CN111298593A (en) * 2018-12-12 2020-06-19 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke
CN111298593B (en) * 2018-12-12 2022-03-29 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke
CN111603890A (en) * 2019-02-26 2020-09-01 中国石化工程建设有限公司 Adsorption tower for preventing dust deposition in air chamber and method for treating flue gas by using adsorption tower
CN111603890B (en) * 2019-02-26 2022-06-17 中国石化工程建设有限公司 Adsorption tower for preventing dust deposition in air chamber and method for treating flue gas by using adsorption tower

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