CN204735109U - Ammonia process desulphurization unit that control ammonia was escaped - Google Patents
Ammonia process desulphurization unit that control ammonia was escaped Download PDFInfo
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- CN204735109U CN204735109U CN201520275015.9U CN201520275015U CN204735109U CN 204735109 U CN204735109 U CN 204735109U CN 201520275015 U CN201520275015 U CN 201520275015U CN 204735109 U CN204735109 U CN 204735109U
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Abstract
The utility model discloses an ammonia process desulphurization unit that control ammonia was escaped, a serial communication port, including desulfurizing tower, oxidation tower and result processing apparatus, the desulfurizing tower top is equipped with the exhanst gas outlet, the desulfurizing tower is by the top exhanst gas outlet to being equipped with the defogging section down in proper order, absorbing section and concentrated crystallized region, it is equipped with flue gas inlet to absorb the section below, result processing apparatus is connected to concentrated crystallized region, absorb the section including absorb spray the layer with absorb spray layer below rise air cap collection liquid layer, it passes through pipe connection to oxidation tower top to rise air cap collection liquid layer internal absorption liquid, the oxidation tower passes through air intake duct and links to each other with the outer oxidation fan of oxidation tower, the oxidation air is gone into to oxidation fan drum forces the oxidation with the absorption liquid, oxidation tower bottom is equipped with the absorption liquid of circulating pump after with the oxidation and continues to let in to absorb and spray the layer. The utility model discloses aerosol in preventing the ammonia escape and reducing the flue gas has absorbent high -usage, simple structure, easy operation, the efficient advantage of desulfurization.
Description
Technical field
The utility model relates to Chemical Engineering and environmental protection technical field, refers to a kind of ammonia desulfuration equipment controlling the escaping of ammonia particularly.
Background technology
The ammonia process of desulfurization is high with its desulfuration efficiency, and accessory substance ammonium sulfate can effectively utilize, and operating cost is low, without waste water, waste residue, meets the advantages such as circular economy concept and widely uses.Flue gas contacts with doctor solution, in washing process, SO
2be desulfurized liquid to absorb, utilize the principle of ammoniacal liquor to flue gas desulfurization institute foundation as follows:
SO
2+2NH
3+H
2O＝(NH4)
2SO
3
SO
2+(NH4)
2SO
3+H
2O＝2NH
4HSO
3
NH
3+NH
4HSO
3＝(NH4)
2SO
3
Ammonium sulfite is oxidized to ammonium sulfate by the oxidation air blasted:
2(NH
4)
2SO
3+O
2＝2(NH
4)
2SO
4
In existing ammonia process of desulfurization assembling device, the high-temperature flue gas counter current contacting of doctor solution and more than 100 DEG C enters oxidation panel, because oxidation panel is positioned at desulfurizing tower, limited space, doctor solution after heat absorption enters oxidation panel and causes oxidation panel temperature higher, ammonium sulfite when reaching more than 70 DEG C in doctor solution not only cannot be oxidized to ammonium sulfate also can cause decompose themselves, ammonia after decomposition easily forms droplet and together discharges with flue gas, ammonia-spillage amount is caused to exceed standard, increase ammonia consumption, the utilization rate of ammonia reduces, and causes ammonia to the secondary pollution of air simultaneously.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides a kind of ammonia desulfuration equipment controlling the escaping of ammonia, improves the utilization rate of ammonia in sweetening process, reduces the pollution that ammonia causes air.
The technical solution of the utility model is: a kind of ammonia desulfuration equipment controlling the escaping of ammonia, it is characterized in that, comprise desulfurizing tower, oxidizing tower and product processing device, described desulfurizing tower top is provided with exhanst gas outlet, described desulfurizing tower by top exhanst gas outlet under be provided with demist section, absorber portion and condensing crystallizing section successively, be provided with gas approach below described absorber portion, described condensing crystallizing section connects product processing device;
Described absorber portion comprises absorbing spraying layer and absorbing and rises gas cap acquisition layer below spraying layer, describedly rise absorbing liquid in gas cap acquisition layer and be connected to above oxidizing tower by pipeline, described oxidizing tower is connected with the oxidation fan outside oxidizing tower by air intake duct, described oxidation fan blasts oxidation air by absorbing liquid forced oxidation, is provided with circulating pump and is continued to pass into absorption spraying layer by the absorbing liquid after oxidation bottom described oxidizing tower.
Preferably, the overflow pipe be communicated with absorber portion is provided with above described oxidizing tower.
Preferably, described absorption spraying layer quantity is multilayer, and the described gas cap acquisition layer that rises absorbs between spraying layer in multilayer.
Preferably, it is characterized in that, described demist section is provided with electrostatic precipitator, cleaning spraying layer, grid packing layer, chevron mist eliminator from top to bottom successively.
Further, be provided with in described demist section and rise gas cap guide layer.
Further, described cleaning spraying layer connects the technique water tank outside desulfurizing tower by circulating pump.
Preferably, be provided with crystallization tank, be connected bottom crystallization tank with the filter outside desulfurizing tower bottom described condensing crystallizing section, described filter leads to absorption spraying layer after connecting circulating pump.
Further, it is characterized in that, bottom described desulfurizing tower crystallization tank, connect product processing device by the excavationg pump outside desulfurizing tower.
Preferably, described product processing device comprises the cyclone hydraulic separators, thickener, centrifuge and the drier that connect successively.
Preferably, be provided with ammonia water tank outside described desulfurizing tower, described ammonia water tank is connected with aqua ammonia pump and disturbance pump successively and leads to absorption spraying layer.
In the utility model, advantage is:
1. absorbing liquid is caused tower external oxidation, can according to actual condition design oxidation space, temperature in strict controlled oxidization tower, decomposes under avoiding absorbing liquid sulfite ammonium high temperature, greatly reduce the probability of the escaping of ammonia, because this reducing ammonia and moisture forms aerocolloidal possibility; The degree of oxidation of ammonium sulfite improves simultaneously, adds the productive rate of desulfurization product, improves economic benefit.
2. increase the demist measure of flue gas after desulfurization, namely configure electric demist, high-efficiency flue gas desulfurization demister and at the demister cleaning spraying layer being connected with technique water tank setting up and down on desulfurizing tower top, remove ammonia and SO through the cleaning of the cleaning spraying layer degree of depth
2, send into chimney qualified discharge by desulfurizing tower exhanst gas outlet after sending into electrostatic precipitator removal PM2.5 particle, ammonia aerosol, Ammonium Sulfate Aerosol thus solve the problem of the escaping of ammonia in the ammonia process of desulfurization.
3. the crystallization of desulfurizing tower is connected with the filter outside desulfurizing tower by pipeline, continue to connect pump after particulate contamination in absorbing liquid in crystallization tank being filtered and return absorption spraying layer, absorbing liquid is not only made to recycle, and make the absorbing liquid of removing impurity and high-temperature flue gas continue counter current contacting, condensing crystallizing is carried out to absorbing liquid.
The utility model can prevent the escaping of ammonia and reduce aerosol in flue gas, has the advantage that absorbent utilization rate is high, structure is simple, easy to operate, desulfuration efficiency is high.Utilize liquefied ammonia or deposed ammonia as desulfurization absorbent, not only reach the object with waste water treatment waste gas, and byproduct can also bring certain economic benefit.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation
Wherein: 1. desulfurizing tower 2. oxidizing tower 3. product processing device 4. exhanst gas outlet 5. gas approach 6. absorbs spraying layer 7. liters of gas cap acquisition layer 8. oxidation fan 9. overflow pipe 10. electrostatic precipitators 11. and cleans spraying layer 12. grid packing layer 13. chevron mist eliminator 14. liters of gas cap guide layer 15. technique water tank 16. crystallization tank 17. filter 18. ammonia water tank 19. aqua ammonia pump 20. disturbance pump 21. circulating pump 22. circulating pump 23. circulating pump 24. circulating pump 25. excavationg pump 26. cyclone hydraulic separators 27. thickener 28. centrifuge 29. driers.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises desulfurizing tower 1, the oxidizing tower 2 of desulfurizing tower 1 outside and product processing device 3.Desulfurizing tower 1 top is provided with exhanst gas outlet 4, desulfurizing tower 1 by top exhanst gas outlet 4 under be provided with demist section, absorber portion and condensing crystallizing section successively, be provided with gas approach 5 below absorber portion, contracting crystallized region connect product processing device 3.
Demist section is provided with electrostatic precipitator 10, cleaning spraying layer 11, grid packing layer 12, chevron mist eliminator 13 from top to bottom successively, be provided with between grid packing layer 12, chevron mist eliminator 13 and rise gas cap guide layer 14, rise gas cap guide layer 14 rises gas cap plate for equidistant intervals is equipped with.Cleaning spraying layer 11 connects the technique water tank 15 outside desulfurizing tower 1 by circulating pump 23.
Absorber portion comprises three layers and absorbs spraying layer 6 and rise gas cap acquisition layer 7, rises gas cap acquisition layer 7 and absorbs between spraying layer at the two-layer absorption spraying layer 6 in top and below one deck.Absorb spraying layer 6 and single or multiple lift can be set according to flue gas concentration, rise gas cap acquisition layer when arranging single-layer absorption spraying layer and be positioned at below single-layer absorption spraying layer 6, collect the absorbing liquid flowed down from top absorption spraying layer 6.Be provided with ammonia water tank 18 outside desulfurizing tower 3, ammonia water tank 18 is connected to lead to aqua ammonia pump 19 and disturbance pump 20 successively and absorbs spraying layer 6.Rise absorbing liquid in gas cap acquisition layer 7 to be connected to above oxidizing tower 2 by pipeline.
It is outside that oxidizing tower 2 is positioned at desulfurizing tower 1, be connected with the oxidation fan 8 outside oxidizing tower 2 by air intake duct, oxidation fan 8 blasts oxidation air by absorbing liquid forced oxidation, two circulating pumps are provided with bottom oxidizing tower 2, i.e. circulating pump 21, circulating pump 22, passes into the absorption spraying layer 6 of the three Ceng Zhong the superiors and the second layer respectively by the absorbing liquid after oxidation.Be provided with the overflow pipe 9 be communicated with absorber portion above oxidizing tower 2, the effect of overflow pipe 9 maintains liquid level stabilizing in oxidizing tower 2, prevents overflow, even and if after overflowing liquid continue to enter desulfurizing tower 1, can not pollute and waste.
Be provided with crystallization tank 16 bottom condensing crystallizing section, be connected bottom crystallization tank 16 with the filter 17 outside desulfurizing tower 1, filter 17 leads to three layers and absorbs any layer in spraying layer 6 after connecting circulating pump 24, the present embodiment middle filtrator 17 leads to undermost absorption spraying layer 6.Product processing device 3 is connected by the excavationg pump 25 outside desulfurizing tower 1 bottom desulfurizing tower crystallization tank 16.
Product processing device 3 comprises the cyclone hydraulic separators 26, thickener 27, centrifuge 28 and the drier 29 that connect successively.
The sweetening process of use ammonia type flue gas desulfurizing purifier is:
The flue gas of 120 ~ 130 DEG C is passed into from gas approach 5, now in ammonia water tank 18, ammoniacal liquor is sprayed from absorption spraying layer 6 by aqua ammonia pump 19 and disturbance pump 20, flue gas and ammoniacal liquor continue to move up after absorber portion counter current contacting, reach chevron mist eliminator 13 and remove water smoke, continue upwards through rising gas cap guide layer 14, increased the contact surface of gas-liquid by grid packing layer 12, make its mutual fully mixing, the ammonia in cleaning spraying layer 11 degree of depth cleaning removal flue gas and SO
2, send into after electrostatic precipitator 10 removes PM2.5 particle, ammonia aerosol, Ammonium Sulfate Aerosol and send into smoke stack emission by desulfurizing tower exhanst gas outlet 4.
Oxidizing tower 2 side is provided with 4 air intake ducts in parallel, air intake duct is all connected with the oxidation fan 8 outside oxidizing tower 2, the absorbing liquid rising gas cap acquisition layer 6 collection from desulfurizing tower enters oxidizing tower 2, in oxidizing tower 2, temperature controls the decomposition avoiding sub-salt below 50 DEG C, the oxygen that oxidation fan 8 is blown into will absorb the ammonium sulfite obtained, ammonium bisulfite solution oxide becomes ammonium sulfate, absorbing liquid after oxidation is sent into filter 19, filter 19 sends into absorption spraying layer 6 by circulating pump 24 after particulate contamination in absorbing liquid being removed, the effect of condensing crystallizing is reached after the filtrate of absorbing liquid and high-temperature flue gas counter current contacting, crystallized product is sent into cyclone hydraulic separators 26 from the excavationg pump 25 at the bottom of tower and carries out Separation of Solid and Liquid, isolated ammonia sulfate crystal is sent into thickener 27 and is concentrated, after ammonium sulfate after concentrated enters centrifuge 28 dehydration, send into drier 29 and become finished product sulfuric acid ammonium, dried ammonium sulfate sends into urea production line through screening, processing generates nitrogen sulphur composite urea.
The above; be only detailed description of the invention of the present utility model, it should be pointed out that any those of ordinary skill in the art are in the technical scope disclosed by the utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.
Claims (10)
1. one kind controls the ammonia desulfuration equipment of the escaping of ammonia, it is characterized in that, comprise desulfurizing tower (1), oxidizing tower (2) and product processing device (3), described desulfurizing tower (1) top is provided with exhanst gas outlet (4), described desulfurizing tower (1) by top exhanst gas outlet (4) under be provided with demist section, absorber portion and condensing crystallizing section successively, be provided with gas approach (5) below described absorber portion, described condensing crystallizing section connects product processing device (3);
Described absorber portion comprises absorbing spraying layer (6) and absorbing and rises gas cap acquisition layer (7) below spraying layer (6), described gas cap acquisition layer (7) the interior absorbing liquid that rises is connected to oxidizing tower (2) top by pipeline, described oxidizing tower (2) is connected with oxidizing tower (2) oxidation fan outward (8) by air intake duct, described oxidation fan (8) blasts air by absorbing liquid forced oxidation, and described oxidizing tower (2) bottom is provided with circulating pump (21), the absorbing liquid after oxidation continues to pass into absorption spraying layer (6) by (22).
2. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 1, is characterized in that, described oxidizing tower (2) top is provided with the overflow pipe (9) be communicated with desulfurizing tower (1).
3. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 1, it is characterized in that, described absorption spraying layer (6) quantity is multilayer, and the described gas cap acquisition layer (7) that rises is positioned between multilayer absorption spraying layer (6).
4. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 1, it is characterized in that, described demist section is provided with electrostatic precipitator (10), cleaning spraying layer (11), grid packing layer (12), chevron mist eliminator (13) from top to bottom successively.
5. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 4, is characterized in that, be provided with and rise gas cap guide layer (14) in described demist section.
6. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 4, is characterized in that, described cleaning spraying layer (11) connects desulfurizing tower (1) technique water tank (15) outward by circulating pump (23).
7. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 1, it is characterized in that, crystallization tank (16) is provided with bottom described condensing crystallizing section, crystallization tank (16) bottom is connected with desulfurizing tower (1) filter outward (17), and described filter (17) leads to absorption spraying layer (6) after connecting circulating pump (24).
8. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 7, it is characterized in that, described desulfurizing tower crystallization tank (16) bottom connects product processing device (3) by desulfurizing tower (1) excavationg pump outward (25).
9. the ammonia desulfuration equipment of the control the escaping of ammonia as described in claim 1 or 8, it is characterized in that, described product processing device (3) comprises the cyclone hydraulic separators (26), thickener (27), centrifuge (28) and the drier (29) that connect successively.
10. the ammonia desulfuration equipment controlling the escaping of ammonia as claimed in claim 1, it is characterized in that, be provided with ammonia water tank (18) outside described desulfurizing tower (3), described ammonia water tank (18) is connected to lead to aqua ammonia pump (19) and disturbance pump (20) successively and absorbs spraying layer (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275015.9U CN204735109U (en) | 2015-04-29 | 2015-04-29 | Ammonia process desulphurization unit that control ammonia was escaped |
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|---|---|---|---|
| CN201520275015.9U CN204735109U (en) | 2015-04-29 | 2015-04-29 | Ammonia process desulphurization unit that control ammonia was escaped |
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| CN204735109U true CN204735109U (en) | 2015-11-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771611A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization system |
| CN105817131A (en) * | 2016-05-11 | 2016-08-03 | 西安热工研究院有限公司 | System and method for inhibiting ammonia escape in ammonia desulphurization |
| CN106362568A (en) * | 2016-08-26 | 2017-02-01 | 江苏中圣高科技产业有限公司 | Overturn-type ammonia-process desulfurization device |
| CN107198942A (en) * | 2017-07-12 | 2017-09-26 | 楚雄滇中有色金属有限责任公司 | Reproduce relieving haperacidity at initial stage tail gas by ammonia method desulphurization system and its method of controlling operation thereof |
| CN108211749A (en) * | 2018-03-28 | 2018-06-29 | 李文 | A kind of wet desulphurization spray column and sulfur method |
| CN109012097A (en) * | 2018-09-30 | 2018-12-18 | 马鞍山沐及信息科技有限公司 | Industrial flue gas desulfurization deacidification recovery unit |
-
2015
- 2015-04-29 CN CN201520275015.9U patent/CN204735109U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771611A (en) * | 2016-01-27 | 2016-07-20 | 西安航天源动力工程有限公司 | Graded tower internal crystallization ammonia-process desulfurization system |
| CN105817131A (en) * | 2016-05-11 | 2016-08-03 | 西安热工研究院有限公司 | System and method for inhibiting ammonia escape in ammonia desulphurization |
| CN106362568A (en) * | 2016-08-26 | 2017-02-01 | 江苏中圣高科技产业有限公司 | Overturn-type ammonia-process desulfurization device |
| CN107198942A (en) * | 2017-07-12 | 2017-09-26 | 楚雄滇中有色金属有限责任公司 | Reproduce relieving haperacidity at initial stage tail gas by ammonia method desulphurization system and its method of controlling operation thereof |
| CN108211749A (en) * | 2018-03-28 | 2018-06-29 | 李文 | A kind of wet desulphurization spray column and sulfur method |
| CN108211749B (en) * | 2018-03-28 | 2023-12-08 | 李文 | Wet desulfurization spray tower and desulfurization method |
| CN109012097A (en) * | 2018-09-30 | 2018-12-18 | 马鞍山沐及信息科技有限公司 | Industrial flue gas desulfurization deacidification recovery unit |
| CN109012097B (en) * | 2018-09-30 | 2021-07-02 | 马鞍山沐及信息科技有限公司 | Industrial flue gas desulfurization deacidification recovery unit |
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