CN202506298U - Device for reducing sulfuric acid production exhaust emissions - Google Patents
Device for reducing sulfuric acid production exhaust emissions Download PDFInfo
- Publication number
- CN202506298U CN202506298U CN2012201723451U CN201220172345U CN202506298U CN 202506298 U CN202506298 U CN 202506298U CN 2012201723451 U CN2012201723451 U CN 2012201723451U CN 201220172345 U CN201220172345 U CN 201220172345U CN 202506298 U CN202506298 U CN 202506298U
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- China
- Prior art keywords
- sulfuric acid
- tower
- secondary absorption
- acid production
- exhaust emissions
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Abstract
The utility model discloses a device for reducing sulfuric acid production exhaust emissions. The device for reducing sulfuric acid production exhaust emissions is characterized by comprising a sulfuric acid secondary absorption tower (1), a sulfuric acid secondary absorption tower circulation pump (2), a washing tower (6), a washing circulation pump (7) and a chimney (5). An outlet discharge pipe of the sulfuric acid secondary absorption tower (1) is connected with the bottom of the washing tower (6). An exhaust emission pipe of the washing tower (6) is connected with the chimney (5). A sulfuric acid secondary absorption foam remover (4) is disposed on a sulfuric acid secondary absorption packing layer (3) inside the sulfuric acid secondary absorption tower (1), an upper portion of the washing tower (6) is provided with a foam remover (8), and the washing tower (6) is provided with a matched pipe which is connected with a phosphoric acid device. The for reducing sulfuric acid production exhaust emissions has the advantages that the exhaust emission reduction effect is obvious, sulfuric acid conversion process does not need large improvement and is low in investment, sulfuric acid production exhaust emission reduction and recovery of part sulfur are achieved, and utilization rate of the sulfur is improved.
Description
Technical field
The utility model relates to exhaust emissions, specifically, relates to the reduction of discharging of sulfuric acid apparatus tail gas.
Background technology
Mainly comprise sulfur dioxide gas, sulfuric acid mist etc. in the gas washing in SA production discharging tail gas,, also cause global acid rain phenomenon very serious along with the fast development of sulfuric acid industry.In order to realize reducing discharging, China takes the lead in limiting in high pollution, maximum discharge industry, wherein just comprises the sulfuric acid manufacturing.For this reason, the inventor through overtesting, grope, be raw material through one or more phosphate, realize that sulfuric acid tail gas absorbs, and has also reclaimed most of element sulphur simultaneously.
Through the retrieval of Chinese patent net, still do not have these class methods at present and come out.
Summary of the invention
The purpose of the utility model is to provide a kind of device that reduces the sulfuric-acid production tail gas discharging, and this device utilizes one or more phosphate to be raw material, and sulfuric acid tail gas is absorbed, and reaches the purpose that sulfuric-acid production tail gas reduces discharging.
The technical scheme that the inventor provides is: reduce the device of sulfuric-acid production tail gas discharging, it is inhaled tower, sulfuric acid two suction tower circulating pumps, scrubbing tower, cleaning circulation pump and chimney by sulfuric acid two and forms; Sulfuric acid two is inhaled the bottom that tower outlet delivery pipe connects scrubbing tower, and the tail gas discharging pipe of scrubbing tower connects chimney; The sulfuric acid two suction tower packing layer top that sulfuric acid two is inhaled in the tower are provided with sulfuric acid two suction tower demisters; The top of scrubbing tower also is provided with demister; Scrubbing tower is provided with the pipe arrangement that is connected with phosphoric acid plant.
The flow of above-mentioned cleaning circulation pump can be provided with according to the production needs.
The principle of the utility model is: the utility model is set up circulation through pump, utilizes one or more phosphate to be raw material, and sulfuric acid tail gas is absorbed, and circulation fluid is one or more of the calcium phosphate that from phosphoric acid plant, transports through pipe arrangement, ferric phosphate, aluminum phosphate., control its pH value control >=4.0, control its solid content at 5-15%, cleaning circulation pump pumps into scrubbing tower with circulation fluid, carries through pipe arrangement through the circulation fluid after the washing and returns phosphoric acid plant; The washing tail gas through scrubbing tower after through smoke stack emission; Described phosphate can directly be used for the raw material of phosphoric acid production, has realized cyclic production.
The utlity model has following advantage: 1. emission reduction effect is obvious, to reduce discharging SO
2Be example, the reduction of discharging rate reaches 60-90%, does not need sulfuric acid conversion technology is done big improvement; 2. be used in conversion process such as sulfuric acid 2+2,3+1 and 3+2; 3. reduce sulfuric acid conversion is done a large amount of inputs; 4. realized that sulfuric-acid production tail gas reduces discharging and the recovery of part element sulphur, improved utilization efficiency.
Description of drawings
Fig. 1 is the apparatus structure sketch map of the utility model;
Among the figure, 1 is that sulfuric acid two is inhaled tower, and 2 is that sulfuric acid two is inhaled the tower circulating pump, and 3 is that sulfuric acid two is inhaled the tower packing layer, and 4 is that sulfuric acid two is inhaled the tower demister, and 5 is chimney, and 6 is scrubbing tower, and 7 is cleaning circulation pump, and 8 is demister.
The specific embodiment
800,000 tons of/year pyrite-based sulfuric acid production devices of phosphate fertilizer plant are the 2+2 conversion process, adopt the utility model, and device is inhaled tower circulating pump 2, scrubbing tower 6, cleaning circulation pump 7 and chimney 5 and formed by sulfuric acid two suction towers 1, sulfuric acid two; Sulfuric acid two is inhaled the bottom that tower 1 outlet delivery pipe connects scrubbing tower 6, and the tail gas discharging pipe of scrubbing tower 6 connects chimney 5; Sulfuric acid two suction tower packing layers 3 top that sulfuric acid two is inhaled tower interior 2 are provided with sulfuric acid two suction tower demisters 4; The top of scrubbing tower 6 also is provided with demister 8; Scrubbing tower 6 is provided with the pipe arrangement that is connected with phosphoric acid plant.
The flow set of above-mentioned cleaning circulation pump is 300m
3/ h.
Adopt the preceding exhaust emissions SO of the utility model
2% is 0.05, through transforming back exhaust emissions SO
2% is below 0.014, has reached new GB requirement.
With 2012 3 lunar system market conditions, emission reduction effect was obvious.
Claims (2)
1. reduce the device of sulfuric-acid production tail gas discharging, it is characterized in that it by sulfuric acid two inhale towers (1), sulfuric acid two is inhaled tower circulating pumps (2), scrubbing tower (6), cleaning circulation pump (7) and chimney (5) and is formed; Sulfuric acid two is inhaled the bottom that tower (1) outlet delivery pipe connects scrubbing tower (6), and the tail gas discharging pipe of scrubbing tower (6) connects chimney (5); Sulfuric acid two suction tower packing layer (3) tops that sulfuric acid two is inhaled in the tower (1) are provided with sulfuric acid two suction tower demisters (4); The top of scrubbing tower (6) also is provided with demister (8); Scrubbing tower (6) is provided with the pipe arrangement that is connected with phosphoric acid plant.
2. the device of reduction sulfuric-acid production tail gas discharging as claimed in claim 1 is characterized in that the flow of said cleaning circulation pump (6) can be provided with according to producing needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201723451U CN202506298U (en) | 2012-04-23 | 2012-04-23 | Device for reducing sulfuric acid production exhaust emissions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201723451U CN202506298U (en) | 2012-04-23 | 2012-04-23 | Device for reducing sulfuric acid production exhaust emissions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202506298U true CN202506298U (en) | 2012-10-31 |
Family
ID=47058806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201723451U Expired - Lifetime CN202506298U (en) | 2012-04-23 | 2012-04-23 | Device for reducing sulfuric acid production exhaust emissions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202506298U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191637A (en) * | 2013-04-23 | 2013-07-10 | 瓮福（集团）有限责任公司 | Industrial exhaust gas desulfurizer |
| CN103949150A (en) * | 2014-03-14 | 2014-07-30 | 云南磷化集团有限公司 | Method using catalytic oxidation of sulfur dioxide tail gas for PH adjustment agent of phosphate rock ore dressing |
-
2012
- 2012-04-23 CN CN2012201723451U patent/CN202506298U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191637A (en) * | 2013-04-23 | 2013-07-10 | 瓮福（集团）有限责任公司 | Industrial exhaust gas desulfurizer |
| CN103949150A (en) * | 2014-03-14 | 2014-07-30 | 云南磷化集团有限公司 | Method using catalytic oxidation of sulfur dioxide tail gas for PH adjustment agent of phosphate rock ore dressing |
| CN103949150B (en) * | 2014-03-14 | 2016-06-15 | 云南磷化集团有限公司 | SO 2 tail gas catalytic oxidation is for the method for flotation of phosphate rock pH adjuster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |