CN203108407U - Device for removing low-concentration sulfur dioxide from phosphate concentrate - Google Patents
Device for removing low-concentration sulfur dioxide from phosphate concentrate Download PDFInfo
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- CN203108407U CN203108407U CN 201320125899 CN201320125899U CN203108407U CN 203108407 U CN203108407 U CN 203108407U CN 201320125899 CN201320125899 CN 201320125899 CN 201320125899 U CN201320125899 U CN 201320125899U CN 203108407 U CN203108407 U CN 203108407U
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- sulfur dioxide
- circulating slot
- ore slurry
- phosphorus ore
- phosphorus
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Abstract
The utility model discloses a device for removing low-concentration sulfur dioxide from phosphate concentrate. The device comprises a phosphoric ore pulp circulation tank (1) and a sulfur dioxide washing tower (4), wherein the upper part of the sulfur dioxide washing tower (4) is provided with an anti-foamer (7) and a spray atomization nozzle (6); the phosphoric ore pulp circulation tank (1) is provided with a circulation tank stirrer (2) and a pH (Potential of Hydrogen) control meter (5); a pulp tank (11) is arranged in the lower part in the sulfur dioxide washing tower (4) and is communicated with the phosphoric ore pulp circulation tank (1) through a pipeline; and the phosphoric ore pulp circulation tank (1) is provided with a pipeline which is communicated with a phosphoric acid production shop (8) through a delivery pump (10). The emission standard of new national standard can be met by treating the low-concentration sulfur dioxide tail gas with the device; and the device has the advantages of simple structure, less investment and convenience in operation.
Description
Technical field
The utility model relates to sulphur compound, specifically is the purifying processing device that the phosphorus concentrate absorbs low-concentration sulfur dioxide.
Background technology
Mainly comprise sulfur dioxide gas, sulfuric acid mist etc. in the gas washing in SA production discharging tail gas, along with the fast development of sulfuric acid industry, also cause global acid rain phenomenon very serious.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.Existing desulfur technology exists that investment is big, operating cost is high, and pipeline is perishable, the technological process complexity, and the operation operation is numerous and diverse, if to the bad problem such as another kind of emission that can produce equally of condition control.Be 300PPm in the former design emission standards for sulfur dioxide of gas washing in SA production, can not satisfying the discharge standard of new national standard 400mg/ NM3(reduced value≤140PPm).Must transform enforcement to device for this reason.Adopt the desulfurization of phosphorus concentrate to overcome the above problems at situation about existing.
Handle problems for low-concentration sulfur dioxide, people have studied some technical schemes, have applied for that have No. 200610011003.0 " methods of phosphorus ore slurry catalytic oxidative desulfurization low-concentration sulfur dioxide " of Chinese patent have been carried out relevant introduction.But after two water law production process of phosphoric acid phosphorus ores slurries concentration is low, may cause in the production process of phosphoric acid phosphorus yield low excessively, produce phosphoric acid concentration and do not reach problem such as related request and occur, the inventor is through overtesting, provide this device in conjunction with actual production, the adding solid content of control phosphorus ore slurry has also been considered the transportation problem that phosphorus ore is starched simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of phosphorus concentrate to remove the device of low-concentration sulfur dioxide, reaches the new discharge standard of country with the discharging that solves low-concentration sulfur dioxide in the sulphuric acid process.
The device that a kind of phosphorus concentrate that the inventor provides removes low-concentration sulfur dioxide comprises: phosphorus ore slurry circulating slot and sulfur dioxide scrubbing tower; Be provided with circulating slot agitator and pH control meter in the described phosphorus ore slurry circulating slot, the pipeline between phosphorus ore slurry circulating slot and the sulfur dioxide scrubbing tower is provided with spray pump; The bottom of described sulfur dioxide scrubbing tower is provided with exhaust gas entrance, top is provided with demister, the top is provided with waste gas outlet, sulfur dioxide washing Tata internal upper part is provided with the spray atomizer, the bottom is provided with slurry tank in the sulfur dioxide washing Tata, and the outlet of slurry tank is provided with pipeline and is communicated to phosphorus ore slurry circulating slot; Phosphorus ore slurry circulating slot is provided with pipeline and is communicated to the phosphoric acid production workshop by delivery pump.
The waste gas outlet place of described sulfur dioxide scrubbing tower is provided with the sulfur dioxide (SO2) emissions detector.
Concrete using method of the present utility model is: low-concentration sulfur dioxide gas and the phosphorus ore slurry of starching circulating slot from phosphorus ore are carried out circulation cleaning in the sulfur dioxide scrubbing tower, the gas after the washing discharges behind demister; Slurries in the slurry tank after the washing are got back to phosphorus ore slurry circulating slot by pipeline self, and slurries recycle, and in use whether slurries discharge and discharged the concentration of sulfur dioxide gas and the pH value of slurries is determined.When the slurry pH in the phosphorus ore slurry circulating slot less than 4 the time, the washing rate of sulfur dioxide generally all is lower than 80%, pH control meter control ore pulp is discharged and is transported to the phosphoric acid production workshop by delivery pump, adds fresh slurries simultaneously, with keep in the phosphorus ore slurry circulating slot slurry pH more than.
Adopt the utility model can handle low-concentration sulfur dioxide tail gas, apparatus structure is simple, small investment, easy to operate and do not bring another kind of emission into.Can satisfy the discharge standard of new national standard 400mg/ NM3(reduced value≤140PPm).
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1-phosphorus ore slurry circulating slot; 2-circulating slot agitator; The 3-spray pump; 4-sulfur dioxide scrubbing tower; 5-pH controls meter; 6-sprays atomizer; The 7-demister; 8-phosphoric acid production workshop; The 10-delivery pump; The 11-slurry tank; The 12-exhaust gas entrance; The 13-waste gas outlet.
The specific embodiment
Embodiment
A kind of phosphorus concentrate removes the device of low-concentration sulfur dioxide, comprises phosphorus ore slurry circulating slot 1 and sulfur dioxide scrubbing tower 4; Be provided with circulating slot agitator 2 and pH control meter 5 in the described phosphorus ore slurry circulating slot 1, the pipeline between phosphorus ore slurry circulating slot 1 and the sulfur dioxide scrubbing tower 4 is provided with spray pump 3; The bottom of described sulfur dioxide scrubbing tower 4 is provided with exhaust gas entrance 12, top is provided with demister 7, the top is provided with waste gas outlet 13, sulfur dioxide scrubbing tower 4 tower internal upper parts are provided with spray atomizer 6, the bottom is provided with slurry tank 11 in sulfur dioxide scrubbing tower 4 towers, and the outlet of slurry tank 11 is provided with pipeline and is communicated to phosphorus ore slurry circulating slot 1; Phosphorus ore slurry circulating slot 1 is provided with pipeline and is communicated to phosphoric acid production workshop 8 by delivery pump 10.
Claims (3)
1. a phosphorus concentrate removes the device of low-concentration sulfur dioxide, it is characterized in that: it comprises phosphorus ore slurry circulating slot (1) and sulfur dioxide scrubbing tower (4); Be provided with circulating slot agitator (2) in the described phosphorus ore slurry circulating slot (1), the pipeline between phosphorus ore slurry circulating slot (1) and the sulfur dioxide scrubbing tower (4) is provided with spray pump (3); The bottom of described sulfur dioxide scrubbing tower (4) is provided with exhaust gas entrance (12), top is provided with demister (7), the top is provided with waste gas outlet (13), sulfur dioxide scrubbing tower (4) tower internal upper part is provided with spray atomizer (6), the bottom is provided with slurry tank (11) in sulfur dioxide scrubbing tower (4) tower, and the outlet of slurry tank (11) is provided with pipeline and is communicated to phosphorus ore slurry circulating slot (1); Phosphorus ore slurry circulating slot (1) is provided with pipeline and is communicated to phosphoric acid production workshop (8) by delivery pump (10).
2. phosphorus concentrate according to claim 1 removes the device of low-concentration sulfur dioxide, it is characterized in that: described waste gas outlet (13) locates to be provided with the sulfur dioxide (SO2) emissions detector.
3. phosphorus concentrate according to claim 1 removes the device of low-concentration sulfur dioxide, it is characterized in that: be provided with pH control meter (5) in the described phosphorus ore slurry circulating slot (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125899 CN203108407U (en) | 2013-03-20 | 2013-03-20 | Device for removing low-concentration sulfur dioxide from phosphate concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125899 CN203108407U (en) | 2013-03-20 | 2013-03-20 | Device for removing low-concentration sulfur dioxide from phosphate concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203108407U true CN203108407U (en) | 2013-08-07 |
Family
ID=48888786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125899 Expired - Lifetime CN203108407U (en) | 2013-03-20 | 2013-03-20 | Device for removing low-concentration sulfur dioxide from phosphate concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203108407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815547A (en) * | 2015-04-09 | 2015-08-05 | 瓮福（集团）有限责任公司 | Phosphate concentrate desulfurization system |
-
2013
- 2013-03-20 CN CN 201320125899 patent/CN203108407U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815547A (en) * | 2015-04-09 | 2015-08-05 | 瓮福（集团）有限责任公司 | Phosphate concentrate desulfurization system |
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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: 20130807 |