CN202654931U - Sectional absorption ammonia desulphurization device - Google Patents
Sectional absorption ammonia desulphurization device Download PDFInfo
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- CN202654931U CN202654931U CN 201220309351 CN201220309351U CN202654931U CN 202654931 U CN202654931 U CN 202654931U CN 201220309351 CN201220309351 CN 201220309351 CN 201220309351 U CN201220309351 U CN 201220309351U CN 202654931 U CN202654931 U CN 202654931U
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Abstract
The utility model relates to a sectional absorption ammonia desulphurization device. Desulfuration, oxidation and crystallization are achieved in the same absorption tower, different structures and different absorbents are adopted in different absorption section layers, and crystallization, absorption, dedusting and oxidation are achieved respectively in corresponding sections; sulfur-containing smoke enters the absorption tower from an inlet in the middle, the smoke passes upwards through a spraying layer, a filler layer and a fog-eliminating washing layer in adverse current sequentially, sulfur dioxide in the smoke is removed, and then dedusting and fog removing are conducted, and the smoke leaves the absorption tower and is discharged; the flow path is complex, the device is not easy to jam, long-term running of the device can be achieved; and the sulfur dioxide can be removed effectively, and at the same time, ammonium sulfate dust particles generated in a desulfuration process can be removed effectively.
Description
Technical field
The utility model relates to a kind of employing grading absorption ammonia desulfurizing process and device, relates in particular to the flue gas ammonia method desulfurizing technology, can be applicable to electric power, metallurgy, environmental protection and chemical technology field.
Background technology
The ammonia-process desulfurization technique that utilizes ammonia to remove sulfide in flue gas as raw material has been widely used in the flue gas desulfurization project of electric power, metallurgy and chemical field.
At present, ammonia-process desulfurization technique has the multiple technologies such as single tower, double tower, multitower, wherein the double tower ammonia-process desulfurization technique is applied in the practical sulphur removal project the earliest, the characteristics of this technology are that desulfurization, crystallization are carried out in two towers respectively, the flue gas that boiler comes is introduced into the crystallizing tower in front, then enters the desulfuration absorbing tower of back.Spray into the ammonium sulfate slurries in the crystallizing tower and contact with flue gas downstream (or adverse current), wherein the ammonium sulfate slurries are the supersaturated ammonium sulfate slurries, and generally between 3 ~ 15%, the effect of this tower is mainly crystallization to the solid content of ammonium sulfate in the slurries, does not substantially have desulfurizing function; Contact with flue gas adverse current and spray into solution in the absorption tower, solution is unsaturated ammonium sulfate, and ammonium sulfate concentrations is generally 5 ~ 30%, and this tower is substantial desulfurizing tower, desulfurization performance is high, and being provided with simultaneously oxidative system in this tower stock tank is ammonium sulfate with sulfite oxidation.The advantage of double tower technology is that two towers are born respectively different effects, and the division of labor is obvious, easily long period operation.And the absorption tower of back is owing to adopt unsaturated ammonium sulfate as absorbent, and desulfuration efficiency is high; Shortcoming is that flow process is complicated, floor space is large, cost is also higher.
The double tower technology also derives the multitower technology, and its Typical Representative is that the absorption tower in the double tower technology is further divided into again absorption tower and oxidizing tower.Too many in view of the quantity of tower in this technology, take up an area excessively, usually 3 towers are stacked up and down, topmost is the absorption tower, the middle part is crystallizing tower, the bottom is oxidizing tower.Such layout has solved this technology and has taken up an area excessive shortcoming, but also causes flow process complicated simultaneously, stops up easily, and device is difficult to long-term operation.
And traditional single tower technology is that desulfurization, oxidation and crystallization all are arranged in the same seat tower, and flue gas enters from the desulfurizing tower middle part, and upwards adverse current is by spraying layer and demister successively, and the desulfurizing tower bottom is crystallization, oxidation stock tank.The advantage of this technology is that structure and flow process are simple, occupation of land is little, cost is low, shortcoming be since desulfurization, oxidation and crystallization all in a tower, causing absorbent is the supersaturation slurries, causes desulfuration efficiency to decrease, and the solid particle in the slurries is easily carried by flue gas and enters in the atmosphere.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the above-mentioned shortcoming that double tower in the traditional handicraft, multitower and traditional single tower technology exist, a kind of grading absorption ammonia desulfuration equipment is provided, in same tower, realize desulfurization, oxidation and crystallization, flow process is complicated, be difficult for stopping up, guarantee the equipment long-term operation; Not only sulfur dioxide can be effectively removed, the ammonium sulfate dust granules thing that generates in the sweetening process can also be effectively removed simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of grading absorption ammonia desulfuration equipment comprises an absorption tower, it is characterized in that: more than the middle part, absorption tower, spraying layer, packing layer, demist flushing layer are set from the bottom to top in the tower; One deck or which floor described spraying layer arrange according to the height of sulfur dioxide in flue gas content, and each spraying layer correspondence outside tower arranges a sprayed slurry circulating pump; Between packing layer and the spraying layer liquid header is set, between packing layer and the demist flushing layer liquid distribution trough is set, liquid distribution trough links to each other with tower filler spray pump outward, liquid header bonding pad spraying box, and the filler spraying box links to each other with the filler spray pump; Described demist flushing layer is arranged by lower leaf interval on demister and the mist eliminator flushing layer; Outlet is backed down in the top void tower setting of demist flushing layer, and spraying layer below void tower arranges side entrance near the tower center.
By technique scheme, described packing layer arranges liquid distribution trough and liquid header simultaneously; Liquid distribution trough is groove type distributor or fluid column distributor; Liquid header be the swash plate collector.
By technique scheme, the height of packing layer is 0.4 ~ 4 meter.
By technique scheme, spraying layer adopts the hollow cone nozzle.
By technique scheme, described demister is the flap demister.
Adopt the grading absorption ammonia desulfurizing process of said apparatus, it is characterized in that: in same absorption tower, realize desulfurization, oxidation and crystallization, adopt different structure and different absorbents at different absorber portion layers, each carries out in corresponding segmentation to make crystallization, absorption, dedusting and oxidation; Sulfur-containing smoke gas enters from the absorption tower centre entrance, and upwards adverse current removes the sulfur dioxide in the flue gas by spraying layer, packing layer, demist flushing layer successively, and through leaving the absorption tower discharging after dedusting, the demist; Filler circulation fluid and sprayed slurry are ammonium sulfate; Desulfurizing tower entrance below void tower section is crystallization, oxidation stock tank, and ammonium sulfite is oxidized to ammonium sulfate in this stock tank, and continuous crystal growth.
By technique scheme, the filler circulation fluid adopts 5% ~ 30% ammonium sulfate.
By technique scheme, the sprayed slurry that spraying layer adopts is the ammonium sulfate slurries, its ammonium sulfate solid content 3 ~ 8%.
By technique scheme, the filler circulation fluid of packing layer recycles after treatment.
Adopt device of the present utility model, core technology has adopted grading absorption technique exactly, and grading absorption carries out in same absorption tower, adopts the ammonium sulfate slurries of high concentration at hypomere hollow-spraying-tower layer, and the ammonium sulfate solid content is 3 ~ 8%, and its effect mainly is desulfurization; Height according to sulfur dioxide in flue gas content, correspondence arranges one deck or Multi-layer sprinkling layer, adopt the hollow cone nozzle, this setting not only in operation flexible choice open the variation that the different spray numbers of plies adapts to content of sulfur dioxide, and be not easy in the running by Crystallization Plugging, guarantee the equipment long-term operation; And adopt the ammonium sulfate of low concentration at the stage casing packing layer, and ammonium sulfate concentrations 5% ~ 30%, this packing layer not only has the ability that removes sulfur dioxide equally, can also remove ammonium sulfate dust granules thing simultaneously.Not only the grading absorption desulfurization is carried out in same absorption tower, and oxidation, crystallization also finish in same tower, and flow process is simple, save and take up an area.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is described.
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Wherein: 1 absorption tower entrance; 2 absorption towers; 3 spraying layers; 4 swash plate collectors; 5 packing layers; 6 groove type distributors; 7 demisters; 8 mist eliminator flushing layers; The outlet of 9 absorption towers; 10 sprayed slurry circulating pumps; 11 filler spraying box; 12 filler spray pumps.
The specific embodiment:
Embodiment one:
Press a kind of grading absorption ammonia desulfuration equipment that the utility model is implemented, comprise an absorption tower 2, it is characterized in that: more than 2 middle parts, absorption tower, spraying layer 3, packing layer 5, demist flushing layer are set from the bottom to top in the tower; One deck or which floor described spraying layer 3 arrange according to the height of sulfur dioxide in flue gas content, and each spraying layer 3 correspondence outside tower arranges a sprayed slurry circulating pump 10; Swash plate collector 4(liquid header is set) between packing layer 5 and the spraying layer 3, between packing layer 5 and the demist flushing layer groove type distributor 6(liquid distribution trough is set), liquid distribution trough links to each other with tower filler spray pump 12 outward, liquid header bonding pad spraying box 11, filler spraying box 11 links to each other with filler spray pump 12; Described demist flushing layer is arranged by lower leaf interval on demister 7 and the mist eliminator flushing layer 8; The absorption tower outlet 9 that the 8 top void tower setting of demist flushing layer are backed down, spraying layer 3 below void towers arrange side direction absorption tower entrance 1 near the tower center.
By technique scheme, described packing layer 5 arranges liquid distribution trough and liquid header simultaneously.
By technique scheme, the height of packing layer 5 is 0.4 ~ 4 meter.
By technique scheme, spraying layer 3 adopts the hollow cone nozzle.
By technique scheme, described demister 7 is the flap demister.
Adopt the grading absorption ammonia desulfurizing process of said apparatus, it is characterized in that: in the 2 interior realization desulfurization of same absorption tower, oxidation and crystallization, adopt different structure and different absorbents at different absorber portion layers, each carries out in corresponding segmentation to make crystallization, absorption, dedusting and oxidation; Sulfur-containing smoke gas enters from absorption tower centre entrance 1, and upwards adverse current removes the sulfur dioxide in the flue gas by spraying layer 3, packing layer 5, demist flushing layer successively, and through leaving the absorption tower discharging after dedusting, the demist; Filler circulation fluid and sprayed slurry are ammonium sulfate; Entrance below, absorption tower void tower section is crystallization, oxidation stock tank, and ammonium sulfite is oxidized to ammonium sulfate in this stock tank, and continuous crystal growth.
By technique scheme, the filler circulation fluid adopts 5% ~ 30% ammonium sulfate.
By technique scheme, the sprayed slurry that spraying layer adopts is the ammonium sulfate slurries, its ammonium sulfate solid content 3 ~ 8%.
By technique scheme, the filler circulation fluid of packing layer recycles after treatment.
Adopt device of the present utility model, core technology has adopted grading absorption technique exactly, and grading absorption carries out in same absorption tower, adopts the ammonium sulfate slurries of high concentration at hypomere hollow-spraying-tower layer, and the ammonium sulfate solid content is 3 ~ 8%, and its effect mainly is desulfurization; Height according to sulfur dioxide in flue gas content, correspondence arranges one deck or Multi-layer sprinkling layer, adopt the hollow cone nozzle, this setting not only in operation flexible choice open the variation that the different spray numbers of plies adapts to content of sulfur dioxide, and be not easy in the running by Crystallization Plugging, guarantee the equipment long-term operation; And adopt the ammonium sulfate of low concentration at the stage casing packing layer, and ammonium sulfate concentrations 5% ~ 30%, this packing layer not only has the ability that removes sulfur dioxide equally, can also remove ammonium sulfate dust granules thing simultaneously.Not only the grading absorption desulfurization is carried out in same absorption tower, and oxidation, crystallization also finish in same tower, and flow process is simple, save and take up an area.
Above disclosed only is preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalence of therefore doing according to the utility model claim changes, and still belongs to protection domain of the present utility model.
Claims (5)
1. a grading absorption ammonia desulfuration equipment comprises an absorption tower, it is characterized in that: more than the middle part, absorption tower, spraying layer, packing layer, demist flushing layer are set from the bottom to top in the tower; One deck or which floor described spraying layer arrange according to the height of sulfur dioxide in flue gas content, and each spraying layer correspondence outside tower arranges a sprayed slurry circulating pump; Between packing layer and the spraying layer liquid header is set, between packing layer and the demist flushing layer liquid distribution trough is set, liquid distribution trough links to each other with tower filler spray pump outward, liquid header bonding pad spraying box, and the filler spraying box links to each other with the filler spray pump; Described demist flushing layer is arranged by lower leaf interval on demister and the mist eliminator flushing layer; Outlet is backed down in the top void tower setting of demist flushing layer, and spraying layer below void tower arranges side entrance near the tower center.
2. desulfurizer according to claim 1, it is characterized in that: described packing layer arranges liquid distribution trough and liquid header simultaneously; Liquid distribution trough is groove type distributor or fluid column distributor; Liquid header be the swash plate collector.
3. desulfurizer according to claim 1 and 2, it is characterized in that: the height of packing layer is 0.4 ~ 4 meter.
4. desulfurizer according to claim 1 and 2 is characterized in that: spraying layer employing hollow cone nozzle.
5. desulfurizer according to claim 3 is characterized in that: spraying layer employing hollow cone nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309351 CN202654931U (en) | 2012-06-29 | 2012-06-29 | Sectional absorption ammonia desulphurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309351 CN202654931U (en) | 2012-06-29 | 2012-06-29 | Sectional absorption ammonia desulphurization device |
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| CN202654931U true CN202654931U (en) | 2013-01-09 |
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| CN 201220309351 Expired - Lifetime CN202654931U (en) | 2012-06-29 | 2012-06-29 | Sectional absorption ammonia desulphurization device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698584A (en) * | 2012-06-29 | 2012-10-03 | 武汉凯迪电力环保有限公司 | Sectional absorption ammonia desulfurization process and device |
| 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 |
| CN106345245A (en) * | 2016-10-21 | 2017-01-25 | 洛阳栾川钼业集团股份有限公司 | Structure improvement method of demister in WSA wet-process acid production |
| CN106955555A (en) * | 2017-04-21 | 2017-07-18 | 天津天大天久科技股份有限公司 | A kind of demisting dust arrester for flue gas desulfurization |
| CN107694269A (en) * | 2017-11-15 | 2018-02-16 | 山东日丽环保科技有限公司 | A kind of high effect dust cleaner and dust collecting process suitable for ammonia process desulfuration tower |
-
2012
- 2012-06-29 CN CN 201220309351 patent/CN202654931U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698584A (en) * | 2012-06-29 | 2012-10-03 | 武汉凯迪电力环保有限公司 | Sectional absorption ammonia desulfurization process and device |
| CN102698584B (en) * | 2012-06-29 | 2014-08-13 | 武汉凯迪电力环保有限公司 | Sectional absorption ammonia desulfurization process and device |
| 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 |
| CN106345245A (en) * | 2016-10-21 | 2017-01-25 | 洛阳栾川钼业集团股份有限公司 | Structure improvement method of demister in WSA wet-process acid production |
| CN106955555A (en) * | 2017-04-21 | 2017-07-18 | 天津天大天久科技股份有限公司 | A kind of demisting dust arrester for flue gas desulfurization |
| CN107694269A (en) * | 2017-11-15 | 2018-02-16 | 山东日丽环保科技有限公司 | A kind of high effect dust cleaner and dust collecting process suitable for ammonia process desulfuration tower |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130109 |
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| CX01 | Expiry of patent term |