CN204601932U - A kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower - Google Patents
A kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower Download PDFInfo
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- CN204601932U CN204601932U CN201520302966.0U CN201520302966U CN204601932U CN 204601932 U CN204601932 U CN 204601932U CN 201520302966 U CN201520302966 U CN 201520302966U CN 204601932 U CN204601932 U CN 204601932U
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- Prior art keywords
- desulfurizing tower
- grade desulfurizing
- water bath
- tower
- spray equipment
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- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000004575 stone Substances 0.000 title claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 48
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000003546 flue gas Substances 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000013459 approach Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011593 sulfur Substances 0.000 abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000006477 desulfuration reaction Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Substances [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 230000023556 desulfurization Effects 0.000 description 10
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- 239000003513 alkali Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower, it is characterized in that, this system comprises the first grade desulfurizing tower and two-grade desulfurizing tower that flue is connected to, wherein gas approach pipeline is connected to first grade desulfurizing top of tower, the outlet at bottom of first grade desulfurizing tower connects the bottom inlet of second level desulfurizing tower, and first grade desulfurizing tower inside sets gradually many group spray equipments and at least one vortex sieve orifice plate from top to bottom; Two-grade desulfurizing tower comprises wet section and dry section, and wet section sets gradually many group spray equipments and at least one vortex sieve orifice plate from the bottom up, and bottom the dry section of two-grade desulfurizing tower, exhanst gas outlet is connected to chimney via air-introduced machine.Usefulness of the present utility model is simple to operate, stable, effectively can reduce the dust in flue gas and sulfur content, meet the requirement of environmental protection.
Description
Technical field
The utility model belongs to flue gas processing equipment of boiler field, is specifically related to a kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower.
Background technology
Domestic use middle and small burn coal boiler amount is large, wide, containing the harmful substance such as dust and sulfur dioxide in the flue gas of its boiler emission.These materials enter after in air, and meeting serious environment pollution, threatens to the healthy of people.At present, there is three major types to the emission-reduction technology of sulfur dioxide, comprise the front desulfurization of burning, desulfurization and the flue gas desulfurization after burning in burning.After burning, desulfurization is generally divided into dry method again, wet method, semidry method etc.And most popular be wet dedusting desulfurization, namely in dedusting and desulfurizing tower with solution and the flue gas generation Physical Absorption of alkalescence and chemical reaction, remove dust and sulfide, reach the object of purifying smoke.The single dedusting and desulfurizing tower of many employings in current prior art, its problems faced has two, and one is that dust removing effects is poor, still has a small amount of dust to discharge in flue gas; Two is that desulfuration efficiency is low, and amount of sulfur contenting in smoke exceeds standard, and is difficult to reach discharge standard.
Utility model content
The utility model is for solving prior art problem, and provide a kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower, it is simple to operate, stable, effectively can reduce the dust in flue gas and sulfur content, meet the requirement of environmental protection.
The purpose of this utility model is achieved through the following technical solutions: a kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower, it is characterized in that, this system comprises first grade desulfurizing tower and two-grade desulfurizing tower, wherein gas approach pipeline is connected to first grade desulfurizing top of tower, the outlet at bottom of first grade desulfurizing tower connects the bottom inlet of two-grade desulfurizing tower, and first grade desulfurizing tower inside sets gradually many group spray equipments and at least one vortex sieve orifice plate from top to bottom; Two-grade desulfurizing tower comprises wet section and dry section, and wet section sets gradually many group spray equipments and at least one vortex sieve orifice plate from the bottom up, and bottom the dry section of two-grade desulfurizing tower, exhanst gas outlet is connected to chimney via air-introduced machine.
Preferably, first grade desulfurizing tower inside sets gradually first group of spray equipment, second group of spray equipment and a vortex sieve orifice plate from top to bottom, the wet section of two-grade desulfurizing tower sets gradually the 3rd group of spray equipment, vortex sieve orifice plate and the 4th group of spray equipment from the bottom up, by arranging spray equipment and vortex sieve orifice plate like this, desulfurization and dedusting effect can be realized better.Design elementary two-stage spray equipment at flue entrance place, when flue gas is through inlet flue duct, the water smoke formed with the spray being arranged in inlet flue duct section carries out mass transfer heat exchange, is tentatively lowered the temperature and removes part sulfur dioxide, entering desulfurizing tower.Flue gas passes through acceleration and the eddy flow of cyclone pneumatic device (vortex sieve orifice plate) in desulfurizing tower, flue dust with collide through the absorbing liquid that is atomized, adhere to, condense, the comprehensive effect such as centrifugation, be thrown to tower wall, with tower wall water film flow at the bottom of tower.Swirl plate spray tower efficiency of dust collection can reach more than 98.5%.By the setting of cyclone pneumatic device, path flue gas number of revolutions in the cylindrical shell of same height is increased, passing through increases, and gas phase turbulent fluctuation is violent, and flue gas is collided over time and space fully with absorbing liquid, contact, dissolve, absorb.First stage tower gas approach dustiness is large, needs first through the desulfurization of two-stage spray rough dusting, to reduce the wearing and tearing to vortex sieve orifice plate, and corrosion.Dust content in secondary tower is little, the path that vortex sieve orifice plate is placed in the 3rd group of spray equipment and the 4th group of spray equipment chien shih flue gas number of revolutions in the cylindrical shell of same height increases, pass through increases, gas phase turbulent fluctuation is violent, flue gas is collided over time and space fully with absorbing liquid, contact, dissolve, absorb, until the dust-removal and desulfurizing of final step.
Preferably, the dehydrating demisting device in order to remove the steam in flue gas is set in dry section.
Desulfurizing tower of the present utility model is by numb stone (a kind of granite) material manufacture.
The effect of first grade desulfurizing tower carries out elementary dust-removal and desulfurizing to flue gas.Two-grade desulfurizing tower is to the further dust-removal and desulfurizing of flue gas.Further, often organizing spray equipment is all angularly mounting spray head (such as installing a shower nozzle every 120 degree of angles or an angle of 90 degrees degree or 60 degree of angles or 30 degree of angles) on annular conduit, as 3-12, preferably about 4-6, such alkali lye can evenly spill, and contacts fully with flue gas.
Preferably, gas approach pipeline is inverted U.
During this system works, start air-introduced machine, high-temperature flue gas in boiler is by inverted U gas approach pipeline, first grade desulfurizing tower is entered from first grade desulfurizing top of tower, I and II spray equipment ejection alkali lye in tower washs flue gas, gas-liquid is fully contacted, and alkali lye and flue gas generation Physical Absorption and chemical reaction, slough most flue dust and sulfur dioxide in flue gas.The flue gas of preliminary purification, by vortex sieve orifice plate, is discharged from the outlet of first grade desulfurizing tower bottom, is and then entered two-grade desulfurizing tower from two-grade desulfurizing tower bottom.Flue gas rises in tower, after the soda lye wash of the 3rd group of spray equipment, continue to rotate by vortex sieve orifice plate and rise, again through the purification of the 4th group of spray equipment, then the dry section removing aqueous vapor of two-grade desulfurizing tower is entered, finally discharge from the exhanst gas outlet of the bottom of two-grade desulfurizing tower, cause smoke stack emission in air through air-introduced machine.
Advantage of the present utility model
The utility model comprises two desulfurizing towers, arrange in each desulfurizing tower and organize spray equipment more, flue gas enters desulfurizing tower by the gas approach pipeline of inverted U from first grade desulfurizing top of tower simultaneously, weave throngh up and down in two desulfurizing towers, add and the time of contact of alkali lye and contact area, thus substantially increase the effect of dust-removal and desulfurizing.In addition, the utility model is simple to operate, stable, is worth promoting.
Accompanying drawing explanation
Fig. 1 is the generalized section of single-stage desulfurizing tower in prior art.
Fig. 2 is the generalized section of the numb stone water bath dust-removing desulphurization system with double-stage desulfurizing tower of the present utility model.
Fig. 3 is the horizontal cross-section schematic diagram of the numb stone water bath dust-removing desulphurization system with double-stage desulfurizing tower of the present utility model.
Fig. 4 is the layout schematic top plan view of alkali lye spray equipment top nozzle.
Reference numeral: 1 is first group of spray equipment; 2 is vortex sieve orifice plate; 3 is second group of spray equipment; 4 is gas approach; 5 is exhanst gas outlet; 6 is the 3rd group of spray equipment; 7 is the 4th group of spray equipment; 8 is gas approach pipeline; 9 is dry section; 10 is first grade desulfurizing tower; 11 is two-grade desulfurizing tower; 12 is wet section; 13 is annular conduit; 14 is shower nozzle.
Detailed description of the invention
Now by reference to the accompanying drawings the utility model is made and illustrating.
A desulfurizing tower is generally included in desulfurization dust-removal system of the prior art.As shown in Figure 1, be provided with first group of spray equipment 1 in this desulfurizing tower from bottom to up, vortex sieve orifice plate 2, and second group of spray equipment 3.Flue gas enters desulfurizing tower from the gas approach 4 of bottom, through spray equipment 1, and 3 and vortex sieve orifice plate 2, then by the dry section dehumidifying of desulfurizing tower, finally discharge from the exhanst gas outlet 5 of tower bottom.It is discharged in flue gas still a small amount of dust, and amount of sulfur contenting in smoke exceeds standard.
The utility model then makes improvement to prior art, a kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower is provided, as shown in Figures 2 and 3, this system comprises the first grade desulfurizing tower 10 and two-grade desulfurizing tower 11 that are connected by flue, high-temperature flue gas in boiler enters first grade desulfurizing tower 10 by inverted U gas approach pipeline 8 from first grade desulfurizing top of tower, the effect of first grade desulfurizing tower carries out elementary dust-removal and desulfurizing to flue gas, and its inside sets gradually first group of spray equipment, 1, second group of spray equipment 3 and a vortex sieve orifice plate 2 from top to bottom; Two-grade desulfurizing tower is to the further dust-removal and desulfurizing of flue gas, and it comprises wet section 12 and dry section 9; Wet section 12 sets gradually the 3rd group of spray equipment 6, vortex sieve orifice plate 2 and the 4th group of spray equipment 7 from the bottom up; Establish dehydrating demisting device (not shown) in order to remove the steam in flue gas in dry section 9.As shown in Figure 4, often organizing spray equipment is all equidistant mounting spray head 14 on annular conduit 13, and such as 4-5, such alkali lye can evenly spill, and contacts fully with flue gas.
During this system works, start air-introduced machine (not shown), high-temperature flue gas in boiler enters first grade desulfurizing tower 10 by inverted U gas approach pipeline 8 from first grade desulfurizing top of tower, first and second group spray equipment 1,3 in tower sprays alkali lye and washs flue gas, gas-liquid is fully contacted, alkali lye and flue gas generation Physical Absorption and chemical reaction, slough most flue dust and sulfur dioxide in flue gas.The flue gas of preliminary purification, by vortex sieve orifice plate 2, is discharged from first grade desulfurizing tower bottom, is and then entered the wet section 12 of two-grade desulfurizing tower 11 from two-grade desulfurizing tower bottom.Flue gas rises in tower, after the soda lye wash of the 3rd group of spray equipment 6, continue to rise by vortex sieve orifice plate 2, again through the purification of the 4th group of spray equipment 7, then the dry section 9 entering two-grade desulfurizing tower removes aqueous vapor, finally discharge from the exhanst gas outlet 5 of the bottom of two-grade desulfurizing tower, cause chimney (not shown) through air-introduced machine (not shown) and be discharged in air.
Certain company's Coal-fired capacity is 16t/H, coal gangue, and coal-fired sulfur content is 4-5%.
Namely
According to above formula analysis: SO
2generation is 20984mg/m
3, require to reach environmental protection 400mg/m
3discharge standard, difficulty is very big.And efficiency of dust collection reaches 90% after adopting first grade desulfurizing tower, desulfuration efficiency reaches SO after 80% namely desulfurization
2content is 4197mg/m
3requirement reaches environmental protection 400mg/m
3discharge standard, difficulty is very big.
Adopt the utility model two-grade desulfurizing Tower System, efficiency of dust collection reaches 99.89%, and desulfuration efficiency liquid reaches SO after 99% namely desulfurization
2content is 210mg/m
3discharge standard.By aforesaid operations, effectively can reduce the dust in flue gas and sulfur content, reach environmental requirement.
Claims (6)
1. the numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower, it is characterized in that, this system comprises the first grade desulfurizing tower and two-grade desulfurizing tower that flue is connected to, wherein gas approach pipeline is connected to first grade desulfurizing top of tower, the outlet at bottom of first grade desulfurizing tower connects the bottom inlet of two-grade desulfurizing tower, and first grade desulfurizing tower inside sets gradually many group spray equipments and at least one vortex sieve orifice plate from top to bottom; Two-grade desulfurizing tower comprises wet section and dry section, and wet section sets gradually many group spray equipments and at least one vortex sieve orifice plate from the bottom up, and bottom the dry section of two-grade desulfurizing tower, exhanst gas outlet is connected to chimney via air-introduced machine.
2. numb stone water bath dust-removing desulphurization system according to claim 1, it is characterized in that, first grade desulfurizing tower inside sets gradually first group of spray equipment, second group of spray equipment and a vortex sieve orifice plate from top to bottom, and the wet section of two-grade desulfurizing tower sets gradually the 3rd group of spray equipment, vortex sieve orifice plate and the 4th group of spray equipment from the bottom up.
3. numb stone water bath dust-removing desulphurization system according to claim 1 and 2, is characterized in that, arranges the dehydrating demisting device in order to remove the steam in flue gas in the two-grade desulfurizing tower section of doing.
4. numb stone water bath dust-removing desulphurization system according to claim 1 and 2, is characterized in that, often organizing spray equipment is angularly mounting spray head on annular conduit.
5. numb stone water bath dust-removing desulphurization system according to claim 1 and 2, is characterized in that, often organizing spray equipment is install a shower nozzle every 120 degree of angles or an angle of 90 degrees degree or 60 degree of angles or 30 degree of angles on annular conduit.
6. numb stone water bath dust-removing desulphurization system according to claim 1 and 2, it is characterized in that, gas approach pipeline is inverted U-shaped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520302966.0U CN204601932U (en) | 2015-05-12 | 2015-05-12 | A kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520302966.0U CN204601932U (en) | 2015-05-12 | 2015-05-12 | A kind of numb stone water bath dust-removing desulphurization system containing double-stage desulfurizing tower |
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| CN204601932U true CN204601932U (en) | 2015-09-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833634A (en) * | 2016-05-11 | 2016-08-10 | 李凤来 | Harmful-gas purifying device |
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- 2015-05-12 CN CN201520302966.0U patent/CN204601932U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833634A (en) * | 2016-05-11 | 2016-08-10 | 李凤来 | Harmful-gas purifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20190512 |