CN203090752U - Double-pool wet-process flue gas dedusting and desulfurizing equipment - Google Patents
Double-pool wet-process flue gas dedusting and desulfurizing equipment Download PDFInfo
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- CN203090752U CN203090752U CN2013201301149U CN201320130114U CN203090752U CN 203090752 U CN203090752 U CN 203090752U CN 2013201301149 U CN2013201301149 U CN 2013201301149U CN 201320130114 U CN201320130114 U CN 201320130114U CN 203090752 U CN203090752 U CN 203090752U
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- absorption tower
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- flue gas
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- desulfurizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model discloses double-pool wet-process flue gas dedusting and desulfurizing equipment, which belongs to the environmental protection field of industrial waste gas purification in the chemical industry field, and is used for solving the problems that an existing desulfurizing tower cannot simultaneously ensure high desulfurizing efficiency and the quality of a desulfurizing by-product (namely gypsum) and is high in running cost. An oxidation pool and a circulating pool are arranged below an absorption tower body, the upper end of the oxidation pool and the upper end of the circulating pool are communicated through an oblique connecting pipe, the end, connected with the oxidation pool, of the connecting pipe is higher than the other end, connected with the circulating pool, of the connecting pipe, the absorption tower body takes the shape of a cylinder gradually expanding from bottom to top, and the included angle between the generatrix and the axial line of the absorption tower body is 12-15 degrees; a filter screen is arranged in the lower part of the absorption tower body, is close to a crude flue gas inlet and is located above the crude flue gas inlet, and the lower end of the absorption tower body is communicated with the oxidation pool through a circulating pulp return pipe; and a circulating pump is used for pumping circulating pulp in the circulating pool to a spray thrower to be atomized. The double-pool wet-process flue gas dedusting and desulfurizing equipment is applied to dedusting and desulfurizing of flue gas.
Description
Technical field
The utility model relates to a kind of wet flue gas dust-removal and desulfurizing equipment, belongs to the industrial waste gas purifying environmental protection field in the chemical field.
Background technology
Existing wet desulfuration tower integrates original cooling tower, absorption tower, oxidizing tower, and all chemical processes are all finished in a tower.In the wet process of FGD process, desulfurization slurry pH value is a very important parameter that influences.In the sweetening process, the oxidation of the dissolving of lime stone, sulfurous calcium is adapted at carrying out under the low pH, and high pH value helps SO
2Absorption.How can guarantee the quality of high desulfurization efficiency and desulfurizing byproduct gypsum simultaneously, and reduce investment and operating cost as far as possible, this solves the contradiction of bringing owing to the required pH value of desulfurizing tower loop slurry to a certain extent with regard to needs.
The utility model content
The utility model can't realize guaranteeing simultaneously the quality of high desulfurization efficiency and desulfurizing byproduct gypsum in order to solve existing desulfurizing tower, and the running cost problem of higher, and then a kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment is provided.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be:
A kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment, described desulphurization plant comprises absorption tower body, demister, spray thrower and circulating pump, demister, spray thrower from top to bottom are arranged in the upper part of body of absorption tower, the lower end sidewall of absorption tower body is provided with former smoke inlet, and the upper end sidewall of absorption tower body is provided with clean exhanst gas outlet; Described desulfurizer also comprises oxidation pond, circulatory pool, loop slurry return pipe, screen pack and two propeller mixers, oxidation pond and circulatory pool are arranged on the below of absorption tower body, and the upper end of oxidation pond and the upper end of circulatory pool are communicated with by tube connector, and tube connector is obliquely installed, an end that is connected with oxidation pond of tube connector will be higher than with circulatory pool and be connected the other end, the absorption tower body is the cylindrical shape of flaring from the bottom to top, and the angle between the bus of absorption tower body and its axis is 12～15 °; The absorption tower is provided with screen pack in the body bottom, and screen pack is near former smoke inlet and being positioned on the former smoke inlet, and the lower end of absorption tower body is communicated with oxidation pond by the loop slurry return pipe; Oxidation pond is provided with the gypsum slurries outlet, also is provided with the oxidation air inlet on the oxidation pond; Circulatory pool is provided with the lime stone slurry inlet; Circulating pump is used for that the loop slurry in the circulatory pool is evacuated to the spray thrower place and atomizes, and a propeller mixer respectively is set in described oxidation pond and the circulatory pool.
The beneficial effects of the utility model are:
The utility model can be crossed the formula design of two ponds, has realized satisfying in different pH values the optimal design of difference in functionality, and effectively having compromised, " in the sweetening process, the oxidation of the dissolving of lime stone, sulfurous calcium is adapted at carrying out under the low pH, and high pH value helps SO
2Absorption " contradiction between the two, improved the quality of desulfuration efficiency and desulfurizing byproduct gypsum, make the load adaptability of desulphurization system strong, can satisfy the demand of different coal-fired sulfur-bearings.The utility model is designed to the cylindrical shape of flaring from the bottom to top with the absorption tower body, calcium-based slurries drop after the atomizing is flowed downward and contacts more fully to carry out desulfurization with the pending flue gas adverse current that upwards flows, and is more conducive to the raising of desulfuration efficiency.In the bottom of absorption tower body, screen pack is set, has effectively removed the grit of flue gas.
The loop slurry of the utility model utilization be contain a small amount of desulfurizing agent lime stone and calcium sulfite through fully being oxidized to the slurries of gypsum, the degree of supersaturation of system's gypsum can be controlled in below the critical degree of supersaturation that produces fouling, avoided the fouling of the two pH value operational systems of double circulation loop, what make system can safe and stable operation.The utility model adopts two ponds formula to design, and has reduced the trouble point that conventional absorption tower side-feeding mixer is prone to fault, and contained calcium sulfite passes through the central dividing plate overflow to circulating slot through the slurries of fully oxidation in the desulfurization slurry of accepting in the oxidation pond.Use of the present utility model has guaranteed the quality of desulfuration efficiency (reaching 82%) and desulfurizing byproduct gypsum, and reduces investment and operating cost.
Description of drawings
Fig. 1 is the structural representation of wet desulphurization device described in the utility model.
The specific embodiment
The specific embodiment one: as shown in Figure 1, the described a kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment of present embodiment, described desulphurization plant comprises absorption tower body 15, demister 2, spray thrower 3 and circulating pump 13, demister 2, spray thrower 3 from top to bottom are arranged in the top of absorption tower body 15, the lower end sidewall of absorption tower body 15 is provided with former smoke inlet 4, and the upper end sidewall of absorption tower body 15 is provided with clean exhanst gas outlet 1; Described desulfurizer also comprises oxidation pond 6, circulatory pool 10, loop slurry return pipe 14, screen pack 16 and two propeller mixers 5; Oxidation pond 6 and circulatory pool 10 are arranged on the below of absorption tower body 15, and the upper end of the upper end of oxidation pond 6 and circulatory pool 10 is communicated with by tube connector 11, and tube connector 11 is obliquely installed, an end that is connected with oxidation pond 6 of tube connector 11 will be higher than with circulatory pool 10 and be connected the other end, absorption tower body 15 is the cylindrical shape of flaring from the bottom to top, and the angle between the bus of absorption tower body 15 and its axis is 12～15 °; The absorption tower body is provided with screen pack 16 in 15 bottoms, and screen pack 16 is near former smoke inlets 4 and be positioned on the former smoke inlet 4, and the lower end of absorption tower body 15 is communicated with oxidation pond 6 by loop slurry return pipe 14; Oxidation pond 6 is provided with gypsum slurries outlet 7, also is provided with oxidation air inlet 8 on the oxidation pond 6; Circulatory pool 10 is provided with lime stone slurry inlet 9; Circulating pump 13 is used for that the loop slurry in the circulatory pool 10 is evacuated to spray thrower 3 places and atomizes, and a propeller mixer 5 respectively is set in described oxidation pond 6 and the circulatory pool 10.Screen pack (16) is used to filter particles such as dust in flue gas.
The specific embodiment two: as shown in Figure 1, the described flue gas desulfurization device of present embodiment also comprises control valve 17, and described control valve 17 is arranged on the tube connector 11.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: as shown in Figure 1, present embodiment has door 18 on the sidewall of described absorption tower body 15, and described door 18 sealings are installed on the sidewall of absorption tower body 15.Open described door 18 and can take out described screen pack 16, to clean.Other composition and annexation are identical with the specific embodiment one or two.
The specific embodiment four: in the present embodiment, angle is 11～13 ° between the axis of described tube connector 11 and the horizontal plane.Other composition and annexation are identical with the specific embodiment three.
The course of work of the present utility model:
The pending former flue gas of boiler enters in the absorption tower body 15 via screen pack 16 from the former smoke inlets 4 in absorption tower body 15 bottoms (gas approach), by circulating pump 13 (recycle slurry liquid pump) calcium-based slurries being evacuated to spray thrower 3 from circulatory pool 10 simultaneously atomizes, calcium-based slurries drop after the atomizing flows downward and contact with the pending flue gas adverse current that upwards flows and carries out desulfurization, and the flue gas after the desulfurization continues upwards to flow after demister 2 demists from clean exhanst gas outlet 1 outflow of desulfurizing tower bodies top;
Loop slurry return pipe 14 by body bottom, absorption tower after absorption tower body 15 spray atomization slurries and the flue gas contact desulfuriation is incorporated into below oxidation pond 6 liquid levels; In the oxidation pond 6 the HSO that accepts in the desulfurization slurry to be contained
3 -By the 8 oxidation air institute oxidations that are blown in the slurries that enter the mouth by oxidation air; Stir by the slurries in 5 pairs of oxidation ponds of propeller mixer 6; Taking out the part slurries simultaneously in the oxidation pond 6 effluxes and enters conventional gypsum dehydration system and carry out liquid-solid separation, solid formation after the separation effluxes as desulfurizing byproduct, liquid phase thing after the separation returns in the oxidation pond 6, and the pH value of slurries remains between the 5.0-5.2 in the oxidation pond 6;
Contained calcium sulfite passes through tube connector 11 overflows to circulatory pool 10 through the slurries of fully oxidation in the desulfurization slurry of accepting in the oxidation pond 6; In circulatory pool 10, replenish lime stone slurry,, make circulatory pool 10 interior slurry pH values rise between the 6.1-6.3 by the dissolving of lime stone slurry; And stir by the slurries in 5 pairs of circulatory pools of propeller mixer 10;
Slurries carry out desulfurization by 13 dozens of circulating pumps to spraying layer again in the circulatory pool 10, being atomized into drop under the spraying layer nozzle act flows to the bottom, absorption tower, with flue gas adverse current contact desulfuriation, the slurries after the desulfurization are introduced in the oxidation ponds 6 through the loop slurry return pipe 14 of desulfurizing tower bottom in the flow process.
Pipe by body bottom, absorption tower after absorption tower spray atomization slurry and the flue gas contact desulfuriation is incorporated into below the oxidation pond liquid level, oxidation pond agitator top, make that so on the one hand the flue gas that enters the absorption tower has the effect of water seal, on the other hand, enter from the absorption tower slurries of agitator can be rapidly effect by agitator be distributed to oxidation pond, be beneficial to the carrying out of physical-chemical reaction process in the groove, and after having avoided entering oxidation pond from the slurries that the absorption tower flows into the direct overflow of short circuit to circulatory pool.
Claims (4)
1. two ponds formula wet flue gas dust-removal and desulfurizing equipment, described desulphurization plant comprises absorption tower body (15), demister (2), spray thrower (3) and circulating pump (13), demister (2), spray thrower (3) from top to bottom are arranged in the top of absorption tower body (15), the lower end sidewall of absorption tower body (15) is provided with former smoke inlet (4), and the upper end sidewall of absorption tower body (15) is provided with clean exhanst gas outlet (1); It is characterized in that: described desulfurizer also comprises oxidation pond (6), circulatory pool (10), loop slurry return pipe (14), screen pack (16) and two propeller mixers (5), oxidation pond (6) and circulatory pool (10) are arranged on the below of absorption tower body (15), and the upper end of the upper end of oxidation pond (6) and circulatory pool (10) is communicated with by tube connector (11), and tube connector (11) is obliquely installed, an end that is connected with oxidation pond (6) of tube connector (11) will be higher than with circulatory pool (10) and be connected the other end, absorption tower body (15) is the cylindrical shape of flaring from the bottom to top, and the bus and the angle between its axis of absorption tower body (15) are 12～15 °; Absorption tower body (15) is provided with screen pack (16) in the bottom, and screen pack (16) is near former smoke inlet (4) and being positioned on the former smoke inlet (4), and the lower end of absorption tower body (15) is communicated with oxidation pond (6) by loop slurry return pipe (14); Oxidation pond (6) is provided with gypsum slurries outlet (7), also is provided with oxidation air inlet (8) on the oxidation pond (6); Circulatory pool (10) is provided with lime stone slurry inlet (9); Circulating pump (13) is used for that the loop slurry in the circulatory pool (10) is evacuated to spray thrower (3) to be located to atomize, and in described oxidation pond (6) and the circulatory pool (10) propeller mixer (5) is set respectively.
2. a kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment according to claim 1, it is characterized in that: described flue gas desulfurization device also comprises control valve (17), described control valve (17) is arranged on the tube connector (11).
3. a kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment according to claim 1 and 2 is characterized in that: have door (18) on the sidewall of described absorption tower body (15), described door (18) sealing is installed on the sidewall of absorption tower body (15).
4. a kind of pair of pond formula wet flue gas dust-removal and desulfurizing equipment according to claim 3, it is characterized in that: angle is 11～13 ° between the axis of described tube connector (11) and the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201301149U CN203090752U (en) | 2013-03-21 | 2013-03-21 | Double-pool wet-process flue gas dedusting and desulfurizing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201301149U CN203090752U (en) | 2013-03-21 | 2013-03-21 | Double-pool wet-process flue gas dedusting and desulfurizing equipment |
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| Publication Number | Publication Date |
|---|---|
| CN203090752U true CN203090752U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201301149U Expired - Fee Related CN203090752U (en) | 2013-03-21 | 2013-03-21 | Double-pool wet-process flue gas dedusting and desulfurizing equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080249A (en) * | 2014-12-03 | 2015-11-25 | 芜湖三峰节能设备有限公司 | Industrial dust-containing tail gas purification device |
| CN107569983A (en) * | 2017-08-08 | 2018-01-12 | 武汉和尔环保科技有限公司 | Smoke-gas wet desulfurization equipment |
| CN108283873A (en) * | 2018-04-10 | 2018-07-17 | 李威 | A kind of environment-friendly disposal system of exhaust gas |
| CN108993071A (en) * | 2018-07-15 | 2018-12-14 | 成都蜀虹装备制造股份有限公司 | A kind of smelting furnace exhaust gas processing device and its exhaust gas treating method |
-
2013
- 2013-03-21 CN CN2013201301149U patent/CN203090752U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080249A (en) * | 2014-12-03 | 2015-11-25 | 芜湖三峰节能设备有限公司 | Industrial dust-containing tail gas purification device |
| CN107569983A (en) * | 2017-08-08 | 2018-01-12 | 武汉和尔环保科技有限公司 | Smoke-gas wet desulfurization equipment |
| CN107569983B (en) * | 2017-08-08 | 2020-04-03 | 武汉和尔环保科技有限公司 | Wet flue gas desulfurization equipment |
| CN108283873A (en) * | 2018-04-10 | 2018-07-17 | 李威 | A kind of environment-friendly disposal system of exhaust gas |
| CN108993071A (en) * | 2018-07-15 | 2018-12-14 | 成都蜀虹装备制造股份有限公司 | A kind of smelting furnace exhaust gas processing device and its exhaust gas treating method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20150321 |
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| EXPY | Termination of patent right or utility model |