CN201719965U - Device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate - Google Patents
Device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate Download PDFInfo
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- CN201719965U CN201719965U CN2010202318618U CN201020231861U CN201719965U CN 201719965 U CN201719965 U CN 201719965U CN 2010202318618 U CN2010202318618 U CN 2010202318618U CN 201020231861 U CN201020231861 U CN 201020231861U CN 201719965 U CN201719965 U CN 201719965U
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Abstract
A device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate comprises a desulfurizing tower (5) and an oxidizing device, wherein a dedusting mechanism is arranged at the upper part inside the desulfurizing tower (5), an outlet (53) used for purified gases to get out is formed at the top of the desulfurizing tower (5), a desulfurizing mechanism is arranged in the desulfurizing tower (5), the device further comprises a concentrating tower (4), the concentrating tower (4) is provided with an inner chamber which is divided into two vertically unconnected parts, the upper inner chamber (41) of the concentrating tower is communicated with smoke outlet (44) at the top of the concentrating tower, and a gas inlet (4c) of the upper inner chamber (41) is connected with one of branch pipes (21) of a pipe (2) containing sulfur dioxide gas. Besides the concentrating tower, the utility model is additionally equipped with a purified gas chimney which can be arranged at the top of the desulfurizing tower, thereby simplifying installation process, reducing equipment cost and saving space. Moreover, heat from the sulfur dioxide gas, which traditionally gives rise to side reactions damaging to the equipment, with the result that the service life of the equipment is shortened, can be utilized to concentrate sulfate liquor.
Description
Technical field
The utility model relates to a kind of device technique field that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct.
Background technology
Usually in discharging tail gas such as refining miner industry, sulfuric acid industry or fire coal, oil burning boiler, all contain SO
2Gas.Even the SO of trace
2Content because discharge capacity is huge, also can do great damage to environment and ecology.It is reported, China become continue America, Europe after be subjected to acid rain to endanger serious area the most, the sheet forest, soil ruined.China explicitly calls for, and newly going up power plant must supporting flue gas desulphurization unit, and the power plant that requires existing discharging to exceed standard must install the desulfurization facility before the end of the year 2010, wherein goes into operation more than 20 years or installed capacity below 100,000 kilowatts, time limit transformation or close down.Meanwhile, stipulate 1 kilogram of SO of every discharging
2Charge 0.63 yuan, the management of environmental protection special fund is directly included in this charge in, is used to curb environmental pollution.In order to encourage enterprise to reduce discharging, to put into effect electrovalence policy in June, 2006 and represent, the every kilowatt hour of newly-built and existing desulfurization unit rate for incorporation into the power network all improves 0.015 yuan.From the state macro-control policy, the supporting exhuast gas desulfurization facility of relevant enterprise is imperative.
Conventional art is that dust arrester is set before desulfurizing tower, the waste gas after the flue dust dedusting in the waste gas is entered desulfurizing tower remove SO
2Also there are some technology that ammonium sulfite warp workshop section is later handled as byproduct, what have is provided with oxidation panel outside Ta Nei or tower, with sulfite oxidation is ammonium sulfate, ammonium sulfate is as byproduct, this design shortcoming is that technology is complicated, equipment investment is big, installing engineering is many, and can not utilize the heat in the sulfur dioxide flue gas to improve rate of energy well, so its structure is still waiting to improve.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of device that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct is provided at above-mentioned prior art present situation, this device not only designs ingenious, and the flue gas heat that can utilize sulfur dioxide is come the concentrated vitriol salting liquid, can eliminate simultaneously high temperature in the sulfur dioxide flue gas again and cause living side reaction and cause damage equipment, thus the service life of raising equipment.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the design's the device that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct, include desulfurizing tower and oxidation unit, be provided with dedusting mechanism at the desulfurizing tower internal upper part, be positioned at the desulfurizing tower top and be provided with the outlet that purifies the flue gas emptying, in desulfurizing tower, be provided with desulfurization mechanism, it is characterized in that: described device also includes concentration tower, this concentration tower inner chamber is divided into the two parts that do not communicate up and down, the top inner chamber of concentration tower is connected with the exhanst gas outlet at concentration tower top, and the air inlet of top inner chamber with contain ducted one road branch pipe(tube) of sulfur dioxide flue gas and be connected, be provided with the spray cycling mechanism of concentrated vitriol salting liquid in the lower lumen of described concentration tower, and the air inlet of lower lumen with contain ducted another road branch pipe(tube) of sulfur dioxide flue gas and be connected, the gas outlet of described lower lumen is connected with the smoke air inlet of desulfurizing tower by pipeline, and the bottom of lower lumen is connected by the sulfate liquor of pipeline with the desulfurizing tower bottom, described oxidation unit is connected with the sulfate liquor of concentration tower bottom and desulfurizing tower bottom respectively by pipeline, is provided with in the concentration tower bottom to be connected with sulfate liquor and can be with the pipeline in the sulfate liquor output external world.
As improvement, the described flue that contains sulfur dioxide can have two-way, and the import department of every road flue is provided with deduster, and the pipeline behind deduster is further divided into the two-way branch pipe(tube), and is provided with dirt catcher respectively at the air inlet place of two-way branch pipe(tube).
As further improvement, in the described flue that contains sulfur dioxide with two branch pipe(tube)s of the top intracavity inter-connection of concentration tower respectively behind dirt catcher mutually bout become a pipeline to be connected with the air inlet of the top inner chamber of concentration tower, and two branch pipe(tube)s that are connected with the lower lumen of concentration tower in the flue of every road respectively behind dirt catcher mutual bout become a pipeline to be connected with the air inlet of lower lumen.
Improve, described oxidation unit is an air-blaster again, and the gas outlet of this air-blaster is connected by the sulfate liquor of pipeline with concentration tower bottom and desulfurizing tower bottom, and the air inlet of air-blaster is connected with ambient atmosphere.
Improve, described dedusting mechanism comprises the wire mesh demister that is installed on desulfurizing tower top again, be positioned at wire mesh demister below the compartment of terrain be provided with water Flushing nozzle, absorption liquid spray equipment.
Improve, described spray cycling mechanism comprises circulating pump and spray equipment again, and spray equipment is arranged at the top of lower lumen, and spray equipment is connected through the sulfate liquor of circulating pump with the lower lumen bottom by pipeline.
Improve again, described desulfurization mechanism comprises absorption liquid distributor, spray head and absorption liquid circulating pump, described absorption liquid distributor, spray head are arranged at the top of desulfurizing tower inner chamber, spray head is arranged in the outlet of receiving liquid distributor, and described absorption liquid distributor is connected with absorption liquid through the absorption liquid circulating pump by pipeline.
Improve, described deduster may be selected to be the deduster of electric cleaner or bag-type dust or electric precipitation and cloth bag combination again.
Compared with prior art, the utility model adopts increases concentration tower, this concentration tower inner chamber is divided into the two parts that do not communicate up and down, the top inner chamber of concentration tower is connected with the exhanst gas outlet at concentration tower top, and the air inlet of top inner chamber with contain ducted one road branch pipe(tube) of sulfur dioxide flue gas and be connected, be provided with the spray cycling mechanism of concentrated vitriol salting liquid in the lower lumen of concentration tower, the advantage of this structure is that clean flue gas chimney is arranged on the desulfurizing tower top, can make full use of the device space, simplify technological process, reduce equipment investment, save the area, and flue gas heat that can sharp sulfur dioxide is come the concentrated vitriol salting liquid, can eliminate the side reaction that high temperature caused in the sulfur dioxide flue gas simultaneously again and cause damage equipment, thus the service life of improving equipment.Pernicious gas composition removal efficiency in the design's the device waste gas can reach respectively: SO2 〉=95%, SO3 〉=99%, NOx=10～30%, HF 〉=99%, dust removal efficiency 〉=90%.So be a kind of very practical device, be worthy of popularization.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the device that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct of present embodiment, include desulfurizing tower 5 and oxidation unit, be provided with dedusting mechanism at desulfurizing tower 5 internal upper parts, this dedusting mechanism comprises the wire mesh demister 52 that is installed on desulfurizing tower 5 tops, be positioned at wire mesh demister 52 below the compartment of terrain be provided with water Flushing nozzle, absorption liquid spray equipment.Be positioned at desulfurizing tower 5 tops and be provided with the outlet 53 that purifies the flue gas emptying, in desulfurizing tower 5, be provided with desulfurization mechanism.This device also includes concentration tower 4, these concentration tower 4 inner chambers are divided into the two parts that do not communicate up and down, the top inner chamber 41 of concentration tower is connected with the exhanst gas outlet 44 at concentration tower top, and the air inlet 4c of top inner chamber 41 is connected with road branch pipe(tube) 21 in containing sulfur dioxide flue gas pipeline 2, be provided with the spray cycling mechanism of concentrated vitriol salting liquid in the lower lumen 42 of described concentration tower, and the air inlet 4a of lower lumen 42 is connected with another road branch pipe(tube) 22 in containing sulfur dioxide flue gas pipeline 2, the gas outlet 4b of described lower lumen 42 is connected with the smoke air inlet 5a of desulfurizing tower 5 by pipeline, and the bottom of lower lumen 42 is connected by the sulfate liquor of pipeline with desulfurizing tower 5 bottoms, described oxidation unit is connected with the sulfate liquor of concentration tower 4 bottoms and desulfurizing tower 5 bottoms respectively by pipeline, this oxidation unit is an air-blaster 7, the gas outlet of this air-blaster 7 is communicated with by the sulfate liquor liquid phase of pipeline with concentration tower 4 bottoms and desulfurizing tower 5 bottoms, and the air inlet of air-blaster 7 is connected with ambient atmosphere, and is provided with in concentration tower 4 bottoms and is connected with sulfate liquor and can be with the extraneous pipeline 8 of sulfate liquor output.
The above-mentioned flue 2 that contains sulfur dioxide has two-way, and the import department of every road flue 2 is provided with deduster 1, and the pipeline behind deduster 1 is further divided into two-way branch pipe(tube) 21,22, and is provided with dirt catcher 3 respectively at the air inlet place of two-way branch pipe(tube) 21,22.Contain two branch pipe(tube)s 21 being connected with the top inner chamber 41 of concentration tower in the flue 2 of sulfur dioxide respectively behind dirt catcher 3 mutually bout become a pipeline to be connected with the air inlet 4c of the top inner chamber 41 of concentration tower, and two branch pipe(tube)s 22 that are connected with the lower lumen of concentration tower in every road flue 2 respectively behind dirt catcher 3 mutual bout become a pipeline to be connected with the air inlet 4a of lower lumen 42.
Above-mentioned spray cycling mechanism comprises circulating pump 6 and spray equipment 43, and spray equipment 43 is arranged at the top of lower lumen, and spray equipment 43 is connected through the sulfate liquor of circulating pump 6 with lower lumen 42 bottoms by pipeline.Above-mentioned desulfurization mechanism comprises absorption liquid distributor 51, spray head and absorption liquid circulating pump 9, described absorption liquid distributor 51, spray head are arranged at the top of desulfurizing tower 5 inner chambers, spray head is arranged in the outlet of receiving liquid distributor 51, and described absorption liquid distributor 51 is connected with absorption liquid through absorption liquid circulating pump 9 by pipeline.
Above-mentioned deduster 1 can be the deduster of electric cleaner or bag-type dust or electric precipitation and cloth bag combination, and these a few skill dedusting technologies all are prior art, and its structure no longer elaborates.
Below the utility model is described in further detail:
The utility model discloses a kind of device and technology that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct, is specifically related to utilize ammoniacal liquor or ammonia to be absorbent and SO
2React, finally obtain the method for ammonium sulfate fertilizer.The utility model is concentrated processes such as the cleaning dust of waste gas, cooling, desulfurization, oxidation and is realized in desulfurizing tower, liquid distribution trough is set in the desulfurizing tower, has the mass-transfer efficiency height, and SR is low, the characteristics that disposal ability is big.The utility model is applicable to SO in all sulphur-containing exhaust gas
2Remove, and convert it into ammonium sulfate fertilizer, dust removal efficiency and desulfurization degree are higher simultaneously, meet the national environmental protection emission request, and the producing ammonium sulfate byproduct chemical fertilizer, can win benefit for enterprise.The concentration tower and the desulfurizing tower that adopt the utility model to provide can be simplified flow process, reduce equipment investment, save the area.
In the ammonia process of desulfurization, generally include following chemical reaction:
(1) SO in the absorption waste gas
2
Effective absorbent components in the absorption liquid is an ammonium sulfite, recovers the absorbability of absorption liquid by additional ammoniacal liquor
(NH
4)
2SO
3+SO
2+H
2O＝2NH
4HSO
3 NH
4HSO
3+NH
3＝(NH
4)
2SO
3
The ratio of ammonium sulfite and ammonium bisulfite is by adjusting the addition of ammoniacal liquor in absorption liquid, controls promptly that the pH value realizes.Ammonium sulfite also can directly be made fertilizer and sell, but because its unstable chemcial property generally need be oxidized to ammonium sulfate with it, is reprocessed into solid, is convenient to store and transportation.
(2) oxidation of ammonium sulfite
In ammonium sulfite solution, directly rouse air, just can obtain oxidation product ammonium sulfate:
2(NH
4)
2SO
3+O
2＝2(NH
4)
2SO
4
Above-mentioned waste gas is meant the tail gas of industrial discharges such as refining miner industry, sulfuric acid industry, coal and oil boiler or is called waste gas; Described device is the associating of concentration tower and desulfurizing tower, realizes cooling simultaneously in tower, proposes dense, desulfurization, oxidizing process.Described process is specific as follows: waste gas divides two-way to enter concentration tower, wherein one the tunnel enters the chimney that goes into operation on concentration tower top in accident situation, and another road enters the concentration tower bottom, is concentrated the circulation fluid cooling, concentrate simultaneously circulation fluid be evaporated carry dense; Waste gas enters absorber portion in the absorption tower then, with desulfurization absorption liquid counter current contacting; Remove SO
2Waste gas after the cat head wire mesh demister reclaims drop, remove the clean flue gas chimney at desulfurizing tower top.Described absorber portion is the absorption tower that is provided with some liquid distribution troughs, and segmentation sprays into absorption liquid in tower, has cancelled filler in the tower, and vapour lock is descended, and can not produce stifled tower phenomenon simultaneously.The place is provided with wire mesh demister at waste gas outlet, in order to catch the gas entrained drip, an absorption liquid spray pipe is set below demister, reduces the gas ammonia volatilization.Form with bubbling adds air in the oxidation panel bottom, enters absorber portion with the waste gas merging after the oxidation, plays stirring action at concentration tower and desulfurizing tower simultaneously.
The utility model is concentrated processes such as the cleaning dust of waste gas, cooling, desulfurization, oxidation and is realized in desulfurizing tower, liquid distribution trough is set in the desulfurizing tower, has the mass-transfer efficiency height, and SR is low, the characteristics that disposal ability is big.The utility model is applicable to SO in all sulphur-containing exhaust gas
2Remove, and convert it into ammonium sulfate fertilizer, dust removal efficiency and desulfurization degree are higher simultaneously, meet the national environmental protection emission request, and the producing ammonium sulfate byproduct chemical fertilizer, can win benefit for enterprise.The concentration tower and the desulfurizing tower that adopt the utility model to provide can be simplified flow process, reduce equipment investment, save the area.
Originally the processing step that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct is:
(1) contains SO
2Industrial waste gas after electric precipitation (or bag-type dust or electric precipitation and cloth bag in conjunction with) section, divide two-way to enter concentration tower, one tunnel emptying section that enters concentration tower top wherein enters the chimney that goes into operation as the flue gas in ignition of the boiler early stage (or boiler is under abnormal conditions); The hypomere that another road enters concentration tower with contact from desulfurizing tower and concentrate through concentrating circulating pump, after reducing temperature, enter desulfurizing tower, contact with circulation fluid, remove sulfur in smoke and other parts sour gas and arrive the chimney emptying that enters the desulfurization top behind the emission request as (nitrogen dioxide) through the desulfuration recycle pump circulation.
(2) this device is not provided with concrete chimney, and go into operation chimney and clean chimney are separately positioned on concentration tower and desulfurizing tower top.
(3) in concentration tower, produce the supersaturation ammonium sulfate and enter ammonium sulfate product separation and drying system production ammonium sulfate, separate the liquid retrieval system that produces; Quantitatively add materials such as ammoniacal liquor, liquefied ammonia or carbonic hydroammonium according to the pH value in the circulation fluid.
(4) at the desulfurization cat head wire mesh demister is set, droplets entrained in the reclaiming clean gas, the gas after the foam removal directly discharges or goes back workshop section.Water Flushing nozzle, absorption liquid spray equipment, liquid distribution trough are set respectively below wire mesh demister, are used to wash silk screen, the gas ammonia in the absorption waste gas and the distribution again of absorption liquid prevent the gas-liquid bias current.
(5) concentration tower and desulfurizing tower are not provided with agitating device, and stirring by the oxidation air compressor machine becomes ammonium sulfate with the sulfite oxidation in the solution simultaneously.
Claims (8)
1. device that removes sulfur dioxide in the waste gas and producing ammonium sulfate byproduct, include desulfurizing tower (5) and oxidation unit, be provided with dedusting mechanism at desulfurizing tower (5) internal upper part, be positioned at desulfurizing tower (5) top and be provided with the outlet (53) that purifies the flue gas emptying, in desulfurizing tower (5), be provided with desulfurization mechanism, it is characterized in that: described device also includes concentration tower (4), this concentration tower (4) inner chamber is divided into the two parts that do not communicate up and down, the top inner chamber (41) of concentration tower is connected with the exhanst gas outlet (44) at concentration tower top, and the air inlet (4c) of top inner chamber (41) is connected with road branch pipe(tube) (21) in containing sulfur dioxide flue gas pipeline (2), be provided with the spray cycling mechanism of concentrated vitriol salting liquid in the lower lumen of described concentration tower (42), and the air inlet (4a) of lower lumen (42) is connected with another road branch pipe(tube) (22) in containing sulfur dioxide flue gas pipeline (2), the gas outlet (4b) of described lower lumen (42) is connected with the smoke air inlet (5a) of desulfurizing tower (5) by pipeline, and the bottom of lower lumen (42) is connected by the sulfate liquor of pipeline with desulfurizing tower (5) bottom, described oxidation unit is connected with the sulfate liquor of concentration tower (4) bottom and desulfurizing tower (5) bottom respectively by pipeline, is provided with in concentration tower (4) bottom to be connected with sulfate liquor and can be with the pipeline (8) in the sulfate liquor output external world.
2. device according to claim 1, it is characterized in that: the described flue (2) that contains sulfur dioxide has two-way, the import department of every road flue (2) is provided with deduster (1), pipeline behind deduster (1) is further divided into two-way branch pipe(tube) (21,22), and is provided with dirt catcher (3) respectively at the air inlet place of two-way branch pipe(tube) (21,22).
3. device according to claim 2, it is characterized in that: two branch pipe(tube)s (21) that are connected with the top inner chamber (41) of concentration tower in the described flue (2) that contains sulfur dioxide respectively behind dirt catcher (3) mutually bout become a pipeline to be connected with the air inlet (4c) of the top inner chamber (41) of concentration tower, and two branch pipe(tube)s (22) that are connected with the lower lumen of concentration tower in every road flue (2) respectively behind dirt catcher (3) mutual bout become a pipeline to be connected with the air inlet (4a) of lower lumen (42).
4. according to claim 1 or 2 or 3 described devices, it is characterized in that: described oxidation unit is air-blaster (7), the gas outlet of this air-blaster (7) is connected by the sulfate liquor of pipeline with concentration tower (4) bottom and desulfurizing tower (5) bottom, and the air inlet of air-blaster (7) is connected with ambient atmosphere.
5. according to claim 1 or 2 or 3 described devices, it is characterized in that: described dedusting mechanism comprises the wire mesh demister (52) that is installed on desulfurizing tower (5) top, is provided with water Flushing nozzle, absorption liquid spray equipment in the compartment of terrain, below that is positioned at wire mesh demister (52).
6. according to claim 1 or 2 or 3 described devices, it is characterized in that: described spray cycling mechanism comprises circulating pump (6) and spray equipment (43), spray equipment (43) is arranged at the top of lower lumen, and spray equipment (43) is connected through the sulfate liquor of circulating pump (6) with lower lumen (42) bottom by pipeline.
7. according to claim 1 or 2 or 3 described devices, it is characterized in that: described desulfurization mechanism comprises absorption liquid distributor (51), spray head and absorption liquid circulating pump (9), described absorption liquid distributor (51), spray head are arranged at the top of desulfurizing tower (5) inner chamber, spray head is arranged in the outlet of receiving liquid distributor (51), and described absorption liquid distributor (51) is connected with absorption liquid through absorption liquid circulating pump (9) by pipeline.
8. according to claim 2 or 3 described devices, it is characterized in that: described deduster (1) is the deduster of electric cleaner or bag-type dust or electric precipitation and cloth bag combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202318618U CN201719965U (en) | 2010-06-18 | 2010-06-18 | Device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202318618U CN201719965U (en) | 2010-06-18 | 2010-06-18 | Device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201719965U true CN201719965U (en) | 2011-01-26 |
Family
ID=43488239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202318618U Expired - Lifetime CN201719965U (en) | 2010-06-18 | 2010-06-18 | Device of removing sulfur dioxide from waste gases and coproducing ammonium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201719965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844034A (en) * | 2010-06-18 | 2010-09-29 | 宁波金远东工业科技有限公司 | Device for removing sulfur dioxide from waste gas and producing ammonium sulfate byproduct |
| CN103977693A (en) * | 2014-06-04 | 2014-08-13 | 长沙高必拓脱硫工程有限公司 | Pneumatic emulsion ammonium carbonate desulfurization system and technological process thereof |
-
2010
- 2010-06-18 CN CN2010202318618U patent/CN201719965U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844034A (en) * | 2010-06-18 | 2010-09-29 | 宁波金远东工业科技有限公司 | Device for removing sulfur dioxide from waste gas and producing ammonium sulfate byproduct |
| CN101844034B (en) * | 2010-06-18 | 2012-11-21 | 宁波金远东工业科技有限公司 | Device for removing sulfur dioxide from waste gas and producing ammonium sulfate byproduct |
| CN103977693A (en) * | 2014-06-04 | 2014-08-13 | 长沙高必拓脱硫工程有限公司 | Pneumatic emulsion ammonium carbonate desulfurization system and technological process thereof |
| CN103977693B (en) * | 2014-06-04 | 2016-03-02 | 长沙高必拓脱硫工程有限公司 | A kind of Pneumatic emulsifying carbon ammonium desulphurization system and technological process thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110126 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |