CN107583456B - Boiler flue gas adsorption catalysis sulfur removal device - Google Patents
Boiler flue gas adsorption catalysis sulfur removal device Download PDFInfo
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- CN107583456B CN107583456B CN201710917740.5A CN201710917740A CN107583456B CN 107583456 B CN107583456 B CN 107583456B CN 201710917740 A CN201710917740 A CN 201710917740A CN 107583456 B CN107583456 B CN 107583456B
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- Prior art keywords
- flue gas
- sulfur removal
- reaction kettle
- motor
- steel wire
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000011593 sulfur Substances 0.000 title claims abstract description 42
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 42
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 14
- 238000006555 catalytic reaction Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000003197 catalytic effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 55
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 229910001655 manganese mineral Inorganic materials 0.000 claims description 15
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 4
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 3
- 244000060011 Cocos nucifera Species 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 14
- 239000003054 catalyst Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 20
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 12
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 10
- 239000011630 iodine Substances 0.000 description 10
- 229910052740 iodine Inorganic materials 0.000 description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a boiler flue gas adsorption catalytic sulfur removal device, which comprises a reaction kettle, wherein the top and the bottom of the reaction kettle are respectively provided with a water inlet and a liquid outlet, and the lower part and the upper part of the reaction kettle are respectively provided with a flue gas inlet and a flue gas outlet; in the reaction kettle: the middle part of the device is provided with a steel wire net, pebbles are paved on the steel wire net, and sulfur removal materials are paved on the pebbles; the bottom of the device is provided with a bracket, a motor is fixed on the bracket, the top of the motor is provided with a guide cover, a driving shaft of the motor is connected with a screw rod, and the screw rod sequentially penetrates through the guide cover, the steel wire mesh, the pebbles and the sulfur removal material from bottom to top; the top of the water distributor is fixedly provided with the water distributor which is communicated with the water inlet through a water pipe. Compared with the prior art, the catalyst is easy to obtain, low in cost, long in service life and stable in catalytic performance; the application range of the method for the flue gas temperature of the boiler is wider; the manufacturing cost and the running cost of the invention are lower; the flue gas sulfur removal efficiency is high, sulfur resources are recovered while sulfur dioxide is removed, and the flue gas sulfur removal device is safe and environment-friendly.
Description
Technical Field
The invention relates to the technical field of boiler flue gas desulfurization, in particular to a boiler flue gas adsorption catalytic desulfurization device.
Background
The prior method for removing sulfur from boiler flue gas mainly comprises the following steps: (1) Combustion sulfur removal, such as lime-limestone injection, lime-magnesia injection, etc.; (2) Sulfur removal after combustion, such as a double alkali method, an ammonia method, a sodium alkali method, an activated carbon adsorption method, a copper oxide method, an electron beam irradiation method, a pulse corona discharge method, and the like. Most of the methods are difficult to popularize and apply, especially in small and medium boilers, because of higher equipment manufacturing cost, complicated operation, larger investment and higher operation cost.
The active carbon adsorption sulfur removal technology can also convert sulfur dioxide into sulfur trioxide at a lower temperature while eliminating sulfur dioxide pollution, and can convert sulfur trioxide into sulfuric acid in the same equipment, so that the technology is attractive in combination of pollution prevention and resource recovery. However, since activated carbon itself has a relatively weak catalytic activity, iodine is generally used as a catalyst, and thus, the activated carbon adsorption method is called an iodine adsorption method. The iodine activated carbon has some technical problems that are difficult to control when in use: (1) Iodine sublimates and runs off when the temperature is higher than 120 ℃, and the condition that the temperature of flue gas is not higher than 120 ℃ is difficult to control; (2) The heating condition is not well controlled when the activated carbon is regenerated, and iodine is attached to the surface of the activated carbon because the regeneration temperature of the activated carbon is about 200 ℃, and the sublimation loss of the iodine is easily caused when the temperature is exceeded; (3) iodine is easy to lose; (4) The running cost is high, iodine is easy to be lost, iodine is often required to be added, and iodine is expensive. Therefore, the sulfur removal effect is not good.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device with good boiler flue gas sulfur removal effect and low cost.
The technical scheme adopted for solving the technical problems is as follows:
boiler flue gas adsorbs catalysis sulfur removal device, including reation kettle, its characterized in that:
the top and the bottom of the reaction kettle are respectively provided with a water inlet and a liquid outlet, and the lower part and the upper part of the reaction kettle are respectively provided with a smoke inlet and a smoke outlet;
in the reaction kettle: a tiled steel wire net is fixedly arranged in the middle of the device, pebbles are paved on the steel wire net, and sulfur removal materials are paved on the pebbles; the bottom of the device is fixedly provided with a bracket, a motor is fixed on the bracket, a guide cover is fixedly arranged at the top of the motor, a driving shaft of the motor is fixedly connected with a screw rod, the screw rod sequentially penetrates through the guide cover, a steel wire mesh, pebbles and sulfur removal materials from bottom to top, and fan blades are fixedly arranged on the screw rod between the steel wire mesh and the guide cover; the top of the water distributor is fixedly provided with the water distributor which is communicated with the water inlet through a water pipe;
the plane of the flue gas outlet is positioned between the sulfur removal material and the water distributor, and the plane of the flue gas inlet is positioned between the guide cover and the fan blade.
The sulfur removal material is a mixture of active carbon and manganese mineral, the volume ratio of the active carbon to the manganese mineral is 3:1, the granularity of the active carbon and the manganese mineral is phi 4-phi 6mm, the active carbon is coal active carbon or asphalt-based spherical active carbon or coconut shell active carbon, and the manganese mineral is pyrolusite or brown manganese ore or black manganese ore or pyrolusite.
The screw rod is connected with the guide cover through a bearing.
The steel wire mesh and the support are welded on the inner wall of the reaction kettle, and the support is of a cross structure.
The air guide sleeve is conical and is connected with the motor through bolts, and the support is connected with the motor through bolts.
The granularity of the pebbles is phi 30-phi 50mm, and the laying height of the pebbles is 150-200mm.
The invention has the beneficial effects that:
compared with the prior art, the motor drives the screw and the fan blades to rotate, the rotation of the fan blades is beneficial to the upward travel of the flue gas, the rotation of the screw enables the mixture of the activated carbon and the manganese mineral to move, the adsorption and catalytic reaction with sulfur dioxide in the flue gas is easier to carry out, the mixing is more uniform, and the efficiency is higher; the catalyst of the invention is easy to obtain, low in cost, long in service life and stable in catalytic performance; the application range of the method for the flue gas temperature of the boiler is wider; the operation is simple, and the activated carbon is easy to regenerate; the manufacturing cost and the running cost of the invention are lower; the flue gas sulfur removal efficiency is high, sulfur resources are recovered while sulfur dioxide is removed, and the flue gas sulfur removal device is safe and environment-friendly.
Drawings
The drawings are only for illustrative purposes and are not intended to limit the scope of the present invention. Wherein,
fig. 1 is a schematic structural view of the present invention.
Detailed Description
For a clearer understanding of the technical features, objects, effects and embodiments of the present invention, a specific embodiment of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, the boiler flue gas adsorption catalytic sulfur removal device comprises a reaction kettle 1, wherein the reaction kettle 1 is a cylindrical container with an upper end socket and a lower end socket, a glass fiber reinforced plastic anti-corrosion layer is lined on the reaction kettle, a water inlet 11 and a liquid outlet 13 are respectively arranged at the top and the bottom of the reaction kettle 1, and a flue gas inlet 14 and a flue gas outlet 12 are respectively arranged at the lower part and the upper part of the reaction kettle 1. In the reaction kettle 1: a tiled steel wire mesh 6 is fixedly arranged in the middle of the device, pebbles 8 are paved on the steel wire mesh 6, the granularity of the pebbles 8 is phi 40mm, the paving height of the pebbles 8 is 150mm, and a sulfur removal material 7 is paved on the pebbles 8; the bottom of the device is fixedly provided with a bracket 10, a motor 5 is fixed on the bracket 10, a guide cover 9 is fixedly arranged at the top of the motor 5, a screw 4 is fixedly connected to a driving shaft of the motor 5, the screw 4 sequentially penetrates through the guide cover 9, a steel wire mesh 6, pebbles 8 and a sulfur removal material 7 from bottom to top, and fan blades 3 are fixedly arranged on the screw 4 between the steel wire mesh 6 and the guide cover 9; the top of the water distributor is fixedly provided with the water distributor 2, and the water distributor 2 is communicated with the water inlet 11 through a water pipe.
The plane of the flue gas outlet 12 is positioned between the sulfur removal material 7 and the water distributor 2, and the plane of the flue gas inlet 14 is positioned between the guide cover 9 and the fan blades 3.
The sulfur removal material 7 is a mixture of active carbon and manganese mineral, the volume ratio of the active carbon to the manganese mineral is 3:1, the granularity of the active carbon and the manganese mineral is phi 5mm, the active carbon is coal active carbon or asphalt-based spherical active carbon or coconut shell active carbon, and the manganese mineral is pyrolusite or brown manganese ore or pyrolusite or birnessite or pyrolusite.
And the fan blades 3 and the air guide sleeve 9 are coated with glass fiber reinforced plastic anti-corrosion layers.
The screw 4 is connected with the air guide sleeve 9 through a bearing.
The steel wire mesh 6 and the support 10 are welded on the inner wall of the reaction kettle 1, and the support 10 is of a cross structure.
The air guide sleeve 9 is conical and is connected with the motor 5 through bolts, and the support 10 is connected with the motor 5 through bolts.
A maintenance door (not shown in the figure) is arranged on the side wall of the reaction kettle 1 corresponding to the motor 5.
The working principle of the invention is as follows:
the maintenance door is opened to start the motor 5, the motor 5 drives the screw 4 and the fan blades 3 to rotate, the sulfur-containing flue gas of the boiler firstly passes through the dust collector to carry out dust collection treatment, then the flue gas enters the bottom of the reaction kettle 1 through the flue gas inlet 14, the rotation of the fan blades 3 is beneficial to the upward movement of the flue gas, the sulfur-containing flue gas enters the mixture of the activated carbon and the manganese minerals, wherein the activated carbon is used as an adsorbent, the manganese minerals are used as catalysts, sulfur dioxide in the sulfur-containing flue gas is catalytically converted into sulfur trioxide by adsorption, the rotation of the screw 4 enables the mixture of the activated carbon and the manganese minerals to move, the adsorption catalytic reaction with sulfur dioxide in the flue gas is easier to carry out, the mixing is more uniform, the efficiency is higher, the manganese minerals are easy to obtain, the price is low, the service life is longer, the catalytic performance is stable, the application range of the flue gas to the boiler is wider, the flue gas after treatment is discharged through the flue gas outlet 12, the flue gas outlet 12 is discharged to the atmosphere through the induced draft fan, the safety is environment-friendly, meanwhile, water is sprayed out through the water inlet 11, the water is reacted with the sulfur trioxide in the sulfur removal material 7 to form dilute sulfuric acid, the dilute sulfuric acid by the reaction with the sulfur trioxide, the water is adopted by the water distributor 2, the water is more soluble in the water, the sulfuric acid is produced by the reaction with the sulfur trioxide, the sulfur dioxide in the sulfur-containing material, the water is easy to move, the sulfuric acid is more convenient to be concentrated, and then the sulfuric acid is sprayed by the dilute sulfuric acid 9 and is downwards through the dilute sulfuric acid 9, and is produced by the dilute sulfuric acid 9, and is downwards and is further by the dilute sulfuric acid 9, and is further, and is favorably and is purified by the diluted by and has downwards and a 9.
The catalyst of the invention is easy to obtain, low in cost, long in service life and stable in catalytic performance; the application range of the method for the flue gas temperature of the boiler is wider; the operation is simple, the activated carbon is easy to regenerate, the activated carbon and the catalyst are taken out from the reactor to be separated, the activated carbon is insulated from air at the temperature of about 200 ℃ and heated (or heated by superheated steam at the temperature of about 200 ℃) to obtain regenerated activated carbon, and then the regenerated activated carbon is uniformly mixed with the catalyst and then is filled into the reactor, and if the catalyst has loss, the catalyst needs to be added; the manufacturing cost and the running cost of the invention are lower; the flue gas sulfur removal efficiency is high, sulfur resources are recovered while sulfur dioxide is removed, and the flue gas sulfur removal device is safe and environment-friendly.
Claims (3)
1. Boiler flue gas adsorbs catalysis sulfur removal device, including reation kettle (1), its characterized in that:
the top and the bottom of the reaction kettle (1) are respectively provided with a water inlet (11) and a liquid outlet (13), and the lower part and the upper part of the reaction kettle (1) are respectively provided with a smoke inlet (14) and a smoke outlet (12);
in the reaction kettle (1): a tiled steel wire mesh (6) is fixedly arranged in the middle of the device, pebbles (8) are paved on the steel wire mesh (6), and a sulfur removal material (7) is paved on the pebbles (8); the bottom of the device is fixedly provided with a bracket (10), a motor (5) is fixed on the bracket (10), a guide cover (9) is fixedly arranged at the top of the motor (5), a screw (4) is fixedly connected to a driving shaft of the motor (5), the screw (4) sequentially penetrates through the guide cover (9), a steel wire mesh (6), pebbles (8) and a sulfur removal material (7) from bottom to top, and fan blades (3) are fixedly arranged on the screw (4) between the steel wire mesh (6) and the guide cover (9); the top of the water distributor is fixedly provided with the water distributor (2), and the water distributor (2) is communicated with the water inlet (11) through a water pipe;
the plane of the flue gas outlet (12) is positioned between the sulfur removal material (7) and the water distributor (2), and the plane of the flue gas inlet (14) is positioned between the air guide sleeve (9) and the fan blades (3);
the sulfur removal material (7) is a mixture of active carbon and manganese mineral, the volume ratio of the active carbon is 3:1, the active carbon is coal active carbon or asphalt-based spherical active carbon or coconut shell active carbon, and the manganese mineral is pyrolusite or pyrolusite;
the screw (4) is connected with the guide cover (9) through a bearing.
2. The boiler flue gas adsorption catalytic sulfur removal device of claim 1, wherein: the steel wire mesh (6) and the support (10) are welded on the inner wall of the reaction kettle (1), and the support (10) is of a cross structure.
3. The boiler flue gas adsorption catalytic sulfur removal device of claim 1, wherein: the air guide sleeve (9) is conical and is connected with the motor (5) through bolts, and the support (10) is connected with the motor (5) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710917740.5A CN107583456B (en) | 2017-09-30 | 2017-09-30 | Boiler flue gas adsorption catalysis sulfur removal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710917740.5A CN107583456B (en) | 2017-09-30 | 2017-09-30 | Boiler flue gas adsorption catalysis sulfur removal device |
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| Publication Number | Publication Date |
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| CN107583456A CN107583456A (en) | 2018-01-16 |
| CN107583456B true CN107583456B (en) | 2024-03-26 |
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| CN201710917740.5A Active CN107583456B (en) | 2017-09-30 | 2017-09-30 | Boiler flue gas adsorption catalysis sulfur removal device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925854B (en) * | 2019-03-21 | 2022-12-02 | 扬州石化有限责任公司 | Desulfurizing device for petroleum catalytic cracking process |
| CN111067378B (en) * | 2019-12-27 | 2021-09-10 | 泉州市泉石通智能科技有限公司 | Environment-friendly barbecue oven |
| CN113477079B (en) * | 2021-07-27 | 2023-06-06 | 杭州航民热电有限公司 | Boiler coal-fired flue gas desulfurization denitration equipment |
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| JPH0824506A (en) * | 1994-07-21 | 1996-01-30 | Mitsubishi Heavy Ind Ltd | Moving bed type active carbon adsorption device |
| KR20130110489A (en) * | 2012-03-29 | 2013-10-10 | 현대제철 주식회사 | Apparatus for treating exhaust gas |
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| CN108479372A (en) * | 2018-04-23 | 2018-09-04 | 泰山学院 | A kind of denitration of boiler smoke dust-extraction unit and its application method |
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2017
- 2017-09-30 CN CN201710917740.5A patent/CN107583456B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0824506A (en) * | 1994-07-21 | 1996-01-30 | Mitsubishi Heavy Ind Ltd | Moving bed type active carbon adsorption device |
| KR20130110489A (en) * | 2012-03-29 | 2013-10-10 | 현대제철 주식회사 | Apparatus for treating exhaust gas |
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