CN102580504A - Novel ammonia desulphurization absorption device - Google Patents
Novel ammonia desulphurization absorption device Download PDFInfo
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- CN102580504A CN102580504A CN2012100580830A CN201210058083A CN102580504A CN 102580504 A CN102580504 A CN 102580504A CN 2012100580830 A CN2012100580830 A CN 2012100580830A CN 201210058083 A CN201210058083 A CN 201210058083A CN 102580504 A CN102580504 A CN 102580504A
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Abstract
The invention relates to a novel ammonia desulphurization absorption device which comprises a desulphurization tower, concentration circulating pumps, a liquid discharge pump, a washing circulating tank and a washing circulating pump, wherein the desulphurization tower is sequentially provided with a desulphurization tower slurry pool, a flue gas inlet, a concentration absorption area spraying layer, a liquid collection hopper, a washing absorption area spraying layer, a filler layer, a demister and a flue gas outlet from bottom to top; an aeration pipe is arranged at the bottom of the desulphurization tower slurry pool; a slurry outlet is arranged at the bottom of the desulphurization tower; and an inlet of the liquid discharge pump is connected with the slurry outlet. The concentration circulating pumps are arranged outside the desulphurization tower; the number of the concentration circulating pumps is consistent with the number of the concentration absorption area spraying layers; the outlet of each circulating pump is connected with one spraying layer; and the washing absorption circulating liquid collected by the liquid collection hopper flows to the washing circulating tank and is sprayed by the washing circulating pump to the washing absorption area spraying layer for circular washing. The device provided by the invention has the advantages of high desulphurization efficiency, low liquid-gas ratio and the like, and does not easily generate scaling blockage, the content of ammonium sulfate particles and liquid drops mixed in the flue gas at the outlet is low, and the byproduct quality is good,.
Description
Technical field
The present invention relates to a kind of novel ammonia process of desulfurization absorption plant that utilizes ammonia (ammoniacal liquor, liquefied ammonia) to remove discharging sulfur dioxide in flue gas such as fire coal boiler fume, sintering device flue gas, glass furnace fume.
Background technology
At present; The absorption plant that ammonia process removes sulfur dioxide in flue gas mainly adopts the wet method spray absorber; The absorption tower mainly contains two kinds of forms: a kind of is to be the hollow-spraying-tower tower of representative with U.S. Ma Sulai company, and another kind is the multi-functional packed tower of syllogic with the exploitation of domestic East China University of Science.
The hollow-spraying-tower tower structure is simple, and resistance is little, is difficult for producing fouling and stops up.It is lower that but the deficiency of this device is an absorption efficiency, if guarantee the desulfurization degree of desulphurization system, must increase the spray flux of absorption liquid, promptly adopts bigger liquid-gas ratio, will certainly cause whole plant energy consumption to increase like this; In addition, hollow-spraying-tower, it is higher to export in the clean flue gas fine ammonium sulfate content, will bring secondary pollution significantly to increase the desulfurization operation cost again.And the more syllogic multipurpose tower of domestic present use, complex structure, particularly his enriching section touch owing to separating with high-temperature flue gas; Make that a large amount of dusts directly gets in the product in the flue gas; Both influenced the quality of final producing ammonium sulfate byproduct chemical fertilizer, and can cause the enriching section dirt accumulation again, fouling is stopped up; Domesticly afterwards the syllogic multipurpose tower was improved; As in 0100190.6 1 kinds of multi-functional ammonia desulfuration equipments of novel two-part of the patent No.: ZL 20112 the syllogic absorption tower being improved to two-part; Make the absorption tower structure greatly simplify; But still there is the easy fouling of riser inwall in the tower, reduces circulation area, increase the shortcoming of flue gas resistance.
Summary of the invention
The object of the invention provides a kind of novel ammonia process of desulfurization absorption plant in order to overcome the deficiency that above-mentioned prior art exists.Device provided by the invention has the desulfuration efficiency height, liquid-gas ratio is low, resistance is little, be not easy to produce advantages such as the ammonium sulfate of carrying secretly in the flue gas is stopped up, exports in fouling and droplet content is low, the byproduct quality is good.
Technical scheme of the present invention is:
A kind of novel ammonia process of desulfurization absorption plant; Mainly be included as desulfurizing tower, concentrate circulating pump, wash cycle case, cleaning circulation pump, positive displacement pump, be divided into the oxidizing and crystallizing district in the tower body of said desulfurizing tower from down to up, concentrate the uptake zone, wash the uptake zone, remove the fog-zone, the oxidizing and crystallizing district is positioned at the desulfurizing tower slurries pond of desulfurizing tower bottom; Between top, desulfurizing tower slurries pond and concentrated uptake zone, be provided with gas approach; Concentrate and be provided with a receipts liquid bucket between uptake zone and the washing uptake zone, concentrate the uptake zone and receiving between liquid bucket and the gas approach, be provided with the 1-5 layer and concentrate the uptake zone spraying layer; Receipts liquid bucket at desulfurizing tower upwards is followed successively by the washing uptake zone, removes the fog-zone; The washing uptake zone is provided with 1-5 layer washing uptake zone spraying layer, and spraying layer top, washing uptake zone is provided with one deck packing layer, and the packing layer top is for removing the fog-zone; Be provided with the two-stage demister, the desulfurizing tower top is provided with exhanst gas outlet; Be provided with aeration tube in bottom, said desulfurizing tower slurries pond; At the bottom of the tower of said desulfurizing tower, be provided with the slurries outlet; The packing layer of said desulfurizing tower washing uptake zone adopts and huddles or structured packing; Desulfurizing tower is provided with concentrated circulating pump outward, and the quantity of concentrated circulating pump is consistent with the number of plies of concentrated uptake zone spraying layer, and every outlet of circulating pump links to each other with one deck spraying layer, links to each other at the bottom of the tower of every inlet of circulating pump and desulfurizing tower; Demister is installed between desulfurizing tower packing layer and the exhanst gas outlet; The import of positive displacement pump links to each other with the slurries outlet; Desulfurization Tata peripheral hardware has the wash cycle case, receives the outlet of liquid bucket in the desulfurizing tower and links to each other with the wash cycle case; The wash cycle case is provided with cleaning circulation pump outward, and the quantity of cleaning circulation pump is consistent with the number of plies of washing uptake zone spraying layer, and every wash cycle delivery side of pump links to each other with one deck spraying layer, links to each other at the bottom of the case of the import of every cleaning circulation pump and wash cycle case;
The receipts liquid bucket of said desulfurizing tower is to be formed by carbon steel, fiberglass, austenitic stainless steel or dual phase steel material; Receiving the liquid bucket is inverted funnel-form; Horn mouth is circular, and diameter is the 30%-90% of desulfurizing tower diameter, and the angle of receiving liquid bucket headwall and horizontal plane is the 0-70 degree; The drain pipe of receiving liquid bucket bottom links to each other with the wash cycle case, and receipts liquid bucket is collected washing uptake zone unsaturated absorption liquid circulated sprinkling liquid and confluxed into the wash cycle case.
Described wash cycle case is made by armored concrete inside lining anti-corrosive material, carbon steel inside lining anti-corrosive material or glass-reinforced plastic material.
The present invention is provided with the absorption liquid distributor pipe between packing layer, demister, the absorption liquid distributor pipe can make absorption liquid be evenly distributed on filling surface, and the packing layer absorption liquid comes to filter out after the bin cure ammonium byproduct for treatment filtrating of dust.
The present invention adopts hollow-spraying-tower and filler absorption to carry out reasonable combination; Between concentrated uptake zone and washing uptake zone, be provided with one and receive the liquid bucket; Concentrate the uptake zone and adopt the saturated solution thickening and washing; The heat that makes full use of flue gas makes ammonium sulfate saturated solution condensing crystallizing, makes total energy approach, farthest reduces operating cost; The washing uptake zone adopts unsaturated ammonium sulfite solution to absorb, and absorption efficiency is high, and liquid-gas ratio is little, and the packing layer absorption liquid comes to filter out after the bin cure ammonium byproduct for treatment filtrating of dust, more can effectively dissolve the fine ammonium sulfate that flue gas is carried secretly; Ammonia process of desulfurization absorption plant structure of the present invention is compared with the more syllogic desulfurizing tower of present use greatly and is simplified, and has avoided the fouling clogging of normal appearance in service; Receive the liquid bucket and replace the more notable flue gas resistance that reduced of riser.
In desulfurizing tower, flue gas upwards through concentrating the uptake zone, carries out counter current contacting with the absorption liquid that sprays, and mass transfer and absorption reaction takes place, to remove the part SO in the flue gas
2, SO
3Almost whole HCl, HF pollutant and removal dust; Water saturation cooling in the smoke evaporative spray liquid simultaneously; The flue gas of saturated cooling continues upwards to receive liquid bucket and the circular passage that absorbs the Tata wall from passing; Get into the washing uptake zone; The absorption liquid of washing uptake zone spray is unsaturated ammonium sulfite solution, removes pollutant and most of fine ammonium sulfate solids particle in the flue gas effectively; Flue gas through washing uptake zone spraying layer after, absorb through packing layer again, the packing layer absorption liquid is the filtrating of coming to filter out after the bin cure ammonium byproduct for treatment dust, is evenly distributed on the filler through the absorption liquid distributor pipe; Absorption liquid after the washing uptake zone absorbs is discharged to the recycle of wash cycle case through receiving liquid bucket leakage fluid dram; Flue gas through packing layer continues to rise in tower, after clean flue gas is removed droplets entrained through demister, discharges outside the tower through the exhanst gas outlet at desulfurizing tower top.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, the 1-gas approach, the 2-desulfurizing tower, 3-concentrates the uptake zone spraying layer, and 4-receives the liquid bucket; 5-washing uptake zone spraying layer, 6-packing layer, 7-absorption liquid distributor pipe, 8-demister, 9-exhanst gas outlet; The 10-aeration tube, the 11-positive displacement pump, 12-concentrates circulating pump, 13-wash cycle case, 14-cleaning circulation pump.
The specific embodiment
In conjunction with accompanying drawing the present invention is done further description.
As shown in Figure 1; The present invention mainly is included as desulfurizing tower 2, concentrates circulating pump 12, wash cycle case 13, cleaning circulation pump 14, positive displacement pump 11; Be divided into the oxidizing and crystallizing district in the tower body of said desulfurizing tower from down to up, concentrate the uptake zone, wash the uptake zone, remove the fog-zone, the bottom is desulfurizing tower slurries ponds in the tower body of desulfurizing tower 2, and the tower body middle part is provided with receives liquid bucket 4; Between top, desulfurizing tower slurries pond and receipts liquid bucket 4, be provided with gas approach 1; Receive between liquid bucket 4 and the gas approach 1 and be provided with 2 layers of concentrated uptake zone spraying layer 3, upwards be provided with two-layer washing uptake zone spraying layer 5, packing layer 6, demister 8 successively at the receipts liquid bucket 4 of desulfurizing tower, the desulfurizing tower top is provided with exhanst gas outlet 9; Be provided with aeration tube 10 in bottom, said desulfurizing tower slurries pond; At the bottom of the tower of said desulfurizing tower, be provided with the slurries outlet; The packing layer 6 of said desulfurizing tower adopts and huddles or structured packing; Desulfurizing tower is provided with 2 concentrated circulating pumps 12 outward, and every outlet of circulating pump links to each other with one deck spraying layer, links to each other at the bottom of the tower of every inlet of circulating pump and desulfurizing tower; Demister 8 is installed between desulfurizing tower packing layer 6 and the exhanst gas outlet 9; The import of positive displacement pump 11 links to each other with the slurries outlet; Between packing layer 6, demister 8, be provided with absorption liquid distributor pipe 7, can make absorption liquid be evenly distributed on filling surface; The receipts liquid bucket 4 of said desulfurizing tower is that, fiberglass anticorrosion by carbon steel, austenitic stainless steel or dual phase steel material form; Receiving the liquid bucket is inverted funnel-form, and horn mouth is circular, and diameter is 70% of a desulfurizing tower diameter; The drain pipe diameter of receiving liquid bucket 4 lower part outlets is 500mm's; This drain pipe links to each other with wash cycle case 13, and receipts liquid bucket 4 is collected washing uptake zone unsaturated absorption liquid circulated sprinkling liquid and confluxed into wash cycle case 13, and described wash cycle case 13 is formed by armored concrete inside lining anti-corrosive material; The wash cycle case 13 outer cleaning circulation pump 14 that are provided with; And the quantity of cleaning circulation pump 14 is consistent with the number of plies of washing uptake zone spraying layer 5, and the outlet of every cleaning circulation pump 14 links to each other with one deck spraying layer, links to each other at the bottom of the case of the import of every cleaning circulation pump 14 and wash cycle case 13.
The present invention adopts hollow-spraying-tower and filler absorption to carry out reasonable combination; Adopt condensing crystallizing and unsaturated solution washing absorption double loop desulfurization in the saturated solution tower; Between concentrated uptake zone and washing uptake zone, be provided with and receive the liquid bucket; Traditional syllogic multipurpose tower is improved simplification become the two-part multipurpose tower, and change riser into receipts liquid bucket.Concentrate and be absorbed as the hollow-spraying-tower tower, have all advantages of traditional hollow-spraying-tower tower, simple in structure, be difficult for producing fouling and stop up, effectively utilize flue gas heat, condensing crystallizing in the tower.The washing uptake zone uses unsaturated ammonium sulfite solution spray to absorb, and desulfuration efficiency is high, can significantly reduce liquid-gas ratio, reduces plant energy consumption; And adopt filler further to wash the fine ammonium sulfate thing of carrying secretly in the flue gas; The filtrating of coming to filter out dust after the bin cure ammonium byproduct for treatment can effectively be dissolved the ammonium sulfate subparticle of carrying secretly in the flue gas; Prevent secondary pollution, and significantly improve the absorbent utilization rate, reduce operating cost.
As shown in Figure 1,120 ℃-160 ℃ the pollutant flue gases such as SO2, SO3, HCl, HF that contain get into desulfurizing tower 2 by desulfurizing tower smoke inlet 1, and flue gas rises along desulfurizing tower in desulfurizing tower 2; At first through concentrating spraying layer 3; The abundant counter current contacting of absorption liquid of flue gas and concentrated spraying layer 3 sprays is carried out heat exchange and mass transfer and is absorbed, and flue-gas temperature drops to 50-60 ℃; Pollutant 10%-30% such as the SO2 in the flue gas in the flue gas, SO3 are removed; Pollutant such as HCl, HF 80%-95% is removed and removes most dusts, and flue gas continues to rise through after concentrating spraying layer 3; Pass and receive liquid bucket 4 and the circular passage that absorbs the Tata wall; Get into the washing uptake zone, the washing uptake zone removes almost all contaminants and most of fine ammonium sulfate solids particle in the flue gas effectively through the unsaturated ammonium sulfite solution of washing uptake zone spraying layer 5 sprays; Flue gas is through after washing uptake zone spraying layer 5; Get into packing layer 6, flue gas absorbs with filling surface absorption liquid generation mass transfer in packing layer 6, meets the requirements of the desulfuration efficiency continued upwards through demister 8; Remove the droplet of deentrainment, discharge through cat head exhanst gas outlet 9; The packing layer absorption liquid is the filtrating of coming to filter out after the bin cure ammonium byproduct for treatment dust, is evenly distributed on the filler through absorption liquid distributor pipe 7; Absorption liquid after the washing uptake zone absorbs is flowed to wash cycle case 13 through receiving 4 collections of liquid bucket, gets to washing uptake zone spraying layer 5 recycles through cleaning circulation pump 14.
The absorption liquid of the concentrated uptake zone of desulfurizing tower spraying layer 3 is extracted the desulfurizing tower of getting to correspondence by the concentrated circulating pump 12 of their corresponding respectively desulfurizing towers out from the desulfurizing tower bottom and is concentrated spraying layer; Absorption liquid is the pollutant while in absorbing flue gas; Also evaporated moisture, constantly concentrate, be converted into ammonium sulfite after the absorption liquid absorbing sulfur dioxide by high-temperature flue gas; The aeration tube 10 bubbling air forced oxidations that ammonium sulfite is provided with at the bottom of through the desulfurization Tata become ammonium sulfate; Ammonium sulfate is constantly concentrated by high-temperature flue gas in the desulfurizing tower 2, finally separates out crystallization, delivers to the desulfuration byproduct after-treatment system through desulfurizing tower slurries positive displacement pump 11.
Claims (4)
1. novel ammonia process of desulfurization absorption plant; Mainly be included as desulfurizing tower, concentrate circulating pump, positive displacement pump, wash cycle case, cleaning circulation pump; It is characterized in that: the bottom is desulfurizing tower slurries ponds in the tower body of desulfurizing tower; The tower body middle part is provided with receives the liquid bucket, between top, desulfurizing tower slurries pond and receipts liquid bucket, is provided with gas approach, between receipts liquid bucket and gas approach, is provided with the 1-5 layer and concentrates the uptake zone spraying layer; Receipts liquid bucket at desulfurizing tower upwards is provided with 1-5 layer washing uptake zone spraying layer, packing layer, demister successively, and the desulfurizing tower top is provided with exhanst gas outlet; Be provided with aeration tube in bottom, said desulfurizing tower slurries pond; At the bottom of the tower of said desulfurizing tower, be provided with the slurries outlet; The import of positive displacement pump links to each other with the slurries outlet; The packing layer of said desulfurizing tower adopts and huddles or structured packing; Desulfurizing tower is provided with concentrated circulating pump outward, and the quantity of concentrated circulating pump is consistent with the number of plies of concentrated uptake zone spraying layer, and every concentrated outlet of circulating pump links to each other with one deck spraying layer, links to each other at the bottom of the tower of every concentrated inlet of circulating pump and desulfurizing tower; Demister is installed between desulfurizing tower packing layer and the exhanst gas outlet; The washing of receiving the collection of liquid bucket absorbs circulation fluid and is flowed to the wash cycle case; Get to washing uptake zone spraying layer circulation cleaning through cleaning circulation pump; The quantity of cleaning circulation pump is consistent with the number of plies of washing uptake zone spraying layer; Every wash cycle delivery side of pump links to each other with one deck spraying layer, links to each other at the bottom of the case of the import of every cleaning circulation pump and wash cycle case.
2. novel ammonia process of desulfurization absorption plant according to claim 1; It is characterized in that: the receipts liquid bucket of said desulfurizing tower is the upside down funnel shape; Horn mouth is circular, and diameter is the 30%-90% of desulfurizing tower diameter, and the angle of receiving liquid bucket headwall and horizontal plane is the 0-70 degree.
3. novel ammonia process of desulfurization absorption plant according to claim 1 and 2 is characterized in that: the receipts liquid bucket of said desulfurizing tower is to be formed by carbon steel, fiberglass, austenitic stainless steel or dual phase steel material.
4. novel ammonia process of desulfurization absorption plant according to claim 1 and 2 is characterized in that: between packing layer, demister, be provided with the absorption liquid distributor pipe, absorption liquid is the filtrating of coming to filter out after the bin cure ammonium byproduct for treatment dust.
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| CN2012100580830A CN102580504A (en) | 2012-03-07 | 2012-03-07 | Novel ammonia desulphurization absorption device |
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| CN2012100580830A CN102580504A (en) | 2012-03-07 | 2012-03-07 | Novel ammonia desulphurization absorption device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349897A (en) * | 2013-07-30 | 2013-10-16 | 四川省品信机械有限公司 | Desulfuration and dedusting device for rotary-type kiln |
| CN105148712A (en) * | 2015-10-10 | 2015-12-16 | 中石化南京工程有限公司 | Multi-stage absorbing desulfurizing device by adopting ammonia-ammonium sulfate method |
| CN107445236A (en) * | 2017-08-25 | 2017-12-08 | 金川集团股份有限公司 | A kind of efficient concentrate emission reduction device of acid waste water |
| CN109126331A (en) * | 2018-09-05 | 2019-01-04 | 武汉华德环保工程技术有限公司 | A kind of device and method for eliminating the coloured plume of wet desulphurization |
| CN111013513A (en) * | 2019-11-25 | 2020-04-17 | 中国化学工程第六建设有限公司 | Accurate installation method of internal parts of formaldehyde synthesis tower |
| CN112657294A (en) * | 2020-11-19 | 2021-04-16 | 陈淼 | Concentrated high-efficient desulfurization degree of depth dust collector of waste water |
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| US4469663A (en) * | 1982-10-15 | 1984-09-04 | The Dow Chemical Company | Scale control in flue gas desulfurization |
| JPS6271516A (en) * | 1985-09-24 | 1987-04-02 | Oji Koei Kk | Method and device for desulfurizing waste gas from boiler or the like |
| CN101844030A (en) * | 2010-03-31 | 2010-09-29 | 浙江菲达环保科技股份有限公司 | Method and system for improving quality of desulfuration byproduct ammonium sulfate |
| CN202044898U (en) * | 2011-04-08 | 2011-11-23 | 武汉兴能环保技术有限公司 | Novel two-sectioned multifunctional ammonia method desulfurization device |
| CN202506306U (en) * | 2012-03-07 | 2012-10-31 | 武汉兴能环保技术有限公司 | Novel ammonia process desulfurization absorption device |
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| US4469663A (en) * | 1982-10-15 | 1984-09-04 | The Dow Chemical Company | Scale control in flue gas desulfurization |
| JPS6271516A (en) * | 1985-09-24 | 1987-04-02 | Oji Koei Kk | Method and device for desulfurizing waste gas from boiler or the like |
| CN101844030A (en) * | 2010-03-31 | 2010-09-29 | 浙江菲达环保科技股份有限公司 | Method and system for improving quality of desulfuration byproduct ammonium sulfate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349897A (en) * | 2013-07-30 | 2013-10-16 | 四川省品信机械有限公司 | Desulfuration and dedusting device for rotary-type kiln |
| CN105148712A (en) * | 2015-10-10 | 2015-12-16 | 中石化南京工程有限公司 | Multi-stage absorbing desulfurizing device by adopting ammonia-ammonium sulfate method |
| CN107445236A (en) * | 2017-08-25 | 2017-12-08 | 金川集团股份有限公司 | A kind of efficient concentrate emission reduction device of acid waste water |
| CN109126331A (en) * | 2018-09-05 | 2019-01-04 | 武汉华德环保工程技术有限公司 | A kind of device and method for eliminating the coloured plume of wet desulphurization |
| CN111013513A (en) * | 2019-11-25 | 2020-04-17 | 中国化学工程第六建设有限公司 | Accurate installation method of internal parts of formaldehyde synthesis tower |
| CN112657294A (en) * | 2020-11-19 | 2021-04-16 | 陈淼 | Concentrated high-efficient desulfurization degree of depth dust collector of waste water |
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Application publication date: 20120718 |