CN103191637A - Industrial exhaust gas desulfurizer - Google Patents
Industrial exhaust gas desulfurizer Download PDFInfo
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- CN103191637A CN103191637A CN2013101418477A CN201310141847A CN103191637A CN 103191637 A CN103191637 A CN 103191637A CN 2013101418477 A CN2013101418477 A CN 2013101418477A CN 201310141847 A CN201310141847 A CN 201310141847A CN 103191637 A CN103191637 A CN 103191637A
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- ore slurry
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Abstract
The invention discloses an industrial exhaust gas desulfurizer. The device comprises a desulfurizing tower, a phosphoric ore pulp circulating tank, a washing tower, a setting tank and a clear liquid tank, wherein an inlet of the desulfurizing tower is provided with an induced draft fan, a spraying system of the desulfurizing tower is connected with the phosphoric ore pulp circulating tank through a phosphoric ore pulp circulating pump, and the bottom of the desulfurizing tower is provided with an outlet which is communicated with the phosphoric ore pulp circulating tank; an outlet of the top of the desulfurizing tower is communicated with the washing tower by a pipeline, the spraying system of the washing tower is connected with the clear liquid tank through a washing tower circulating pump, the bottom of the washing tower is provided with an outlet which is communicated with the setting tank, an outlet of the bottom of the setting tank is communicated with the phosphoric ore pulp circulating tank through a slush pump, and a clear liquid outlet of the setting tank is connected with the clear liquid tank. The sulfuric acid tail gas which is subjected to desulfurization by the device contains dioxo sulphur content being smaller than 100ppm, and can meet the new standard in China. In addition, due to the adoption of the device, the three wastes can not be generated in the whole process, a sulphur resource is fully utilized, a phosphorus resource is not damaged, and the part industrial wastewater is also consumed.
Description
Technical field
The present invention relates to sulfur oxide, relate in particular to the device that reduces industrial tail gas sulfur dioxide.
Background technology
Manufacturing enterprises such as thermal power plant, sulfuric acid plant, smeltery, because production is used and is contained element sulphur in the raw material, the sulfur-bearing raw material just has sulfur dioxide in production process and produces, sulfur dioxide is severe contamination atmosphere and environment not only, return the mankind and agree with heavy losses, seriously hindered the sustainable development of human society.Emission standards for sulfur dioxide≤the 420ppm of national regulation before, nowadays, new discharge standard≤the 140ppm of country, new regulation will be in execution on October 1 in 2013, therefore, design of the prior art, all be to design according to original national standard, exhaust emissions can not satisfy new national standard, in view of this, the inventor provides a kind of industrial tail gas device, can satisfy new discharge standard.
Summary of the invention
The purpose of this invention is to provide a kind of industrial tail gas device, this device can make the sulphur resource be fully used, and phosphor resource also is fully utilized, and also consumes the waste water of part producing simultaneously.
Device provided by the invention comprises: desulfurizing tower, phosphorus ore slurry circulating slot, scrubbing tower, subsider and stillness of night groove; The porch of desulfurizing tower is provided with an air-introduced machine, is used for containing the industrial tail gas suction desulfurizing tower of sulfur dioxide, and the spray system of desulfurizing tower connects phosphorus ore slurry circulating slot by phosphorus ore slurry circulating pump, and the bottom of desulfurizing tower also has outlet to be communicated to phosphorus ore slurry circulating slot; The outlet conduit at desulfurizing tower top is communicated to scrubbing tower, the spray system of scrubbing tower is connected to the clear liquid groove by the scrubbing tower circulating pump, wash tower bottoms has outlet to be communicated to subsider, the outlet at bottom of subsider is communicated to phosphorus ore slurry circulating slot by slush pump, and the purified liquor outlet of subsider is connected to the clear liquid groove;
Described phosphorus ore slurry circulating slot, subsider and clear liquid groove have pipeline to be connected to lead on the pipeline of scrubbing tower entrance.
Be provided with agitator in the described phosphorus ore slurry circulating slot.
The pipeline of described phosphorus ore slurry circulating pump and desulfurizing tower spray system is provided with flowmeter A, and the pipeline of described scrubbing tower circulating pump and scrubbing tower spray system is provided with flowmeter B.
The top of described desulfurizing tower is provided with demister A, and the top of described scrubbing tower is provided with demister B.
The top of described demister A is provided with spray head A, and spray head A connects waste pipe.
The top of described demister B is provided with spray head B, and spray head B connects waste pipe.
Described scrubbing tower exit is provided with flue gas analyser.
Described phosphorus ore slurry adopts the used phosphorus ore slurry of phosphoric acid, its solid content: 58～66%; Granularity: quality percentage composition at least 80% is less than 200 orders; Fe
2O
3Quality percentage composition: 0.2～0.5%; P
2O
5Quality percentage composition: 30～38%.
Filtrate or ardealite storage yard ardealite upper clear supernate that the cleaning solution of described scrubbing tower uses ore-dressing plant to filter out.
Principle of the present invention: will contain the following industrial tail gas of sulfur dioxide 1500ppm and introduce desulfurizing tower, gas sprays the phosphorus ore slurry that gets off with top and fully contacts, in ore pulp under the effect of strong oxidizer such as ferric iron element, sulfur dioxide is generated sulfur trioxide by catalytic oxidation under 40～70 ℃ of temperature, water in sulfur trioxide and the ore pulp is combined into dilute sulfuric acid, and sulfuric acid and the reaction of phosphorus ore slurry generate phosphoric acid and and calcium sulfate.Along with the sulfur dioxide that absorbs in the cyclic process of phosphorus ore slurry increases, active oxidation dosage constantly reduces in the phosphorus ore slurry, part moisture is also taken away with urosome, thereby the phosphorus ore slurry absorbs the also decline thereupon of efficient of two change sulphur, it is fewer and feweri that the moisture content of ore pulp also becomes, so will constantly replenish fresh phosphorus ore slurry and water in the process of phosphorus ore slurry circulation.The phosphorus ore slurry that adding proper amount of fresh phosphorus ore slurry displaces after the part circulation absorbs send the phosphoric acid reaction tank recycling, to increase the amount of effective active oxygen dosage, filtrate or ardealite storage yard ardealite upper clear supernate that moisturizing filters out with ore-dressing plant, control circulation phosphorus ore slurry solid content is about 60%, can fully deviate from the sulfur dioxide in the industrial tail gas, the realization qualified discharge to guarantee the phosphorus ore slurry.For reducing mist entrainment in phosphorus ore slurry and the sulfuric acid tail gas contact process, be provided with the woven wire demister at the desulfurizing tower top, and by taking off the tower moisturizing it washed, avoid stopping up.The sulfuric acid tail that comes out through desulfurizing tower still contains a small amount of mist, further enters atmosphere after washing and the foam removal by packed tower, reality existing cleaning qualified discharge.In addition, avoid in the production process sulfur dioxide to overflow from vessel port and pollute production environment, ore pulp circulating slot, subsider and clear liquid groove all are in sealing, and link to each other with scrubbing tower import management at its top introduction pipe.
The present invention has following advantage: first, can be effectively the oxidizing sulfur dioxide of industrial tail gas be generated sulfur trioxide, and the water in sulfur trioxide and the ore pulp is combined into the dilute sulfuric acid recycling, the content of the tail gas sulphur dioxide by the desulfurization of phosphorus ore slurry is below 100ppm, be lower than national emission standards for sulfur dioxide≤140ppm, realized qualified discharge.The second, the reaction of sulfuric acid and phosphorus ore slurry generate phosphoric acid and and calcium sulfate, the phosphorus ore slurry after circulation absorbs send phosphoric acid reaction tank to recycle, therefore phosphor resource does not incur loss yet, and has also reduced the consumption of sulfuric acid in the production process of phosphoric acid.The 3rd, filtrate or ardealite storage yard ardealite upper clear supernate that moisturizing filters out with ore-dressing plant, the waste water in make producing obtains recycling, and has reduced the wastewater treatment expense and to the pollution of environment, whole process does not have " three wastes " generation newly.
Description of drawings
Fig. 1 is structural representation of the present invention;
Among the figure, the 1-desulfurizing tower; The 2-scrubbing tower; 3-phosphorus ore slurry circulating slot; The 4-subsider; 5-clear liquid groove; The 6-agitator; The 7-air-introduced machine; 8-phosphorus ore slurry circulating pump; The 9-slush pump; 10-scrubbing tower circulating pump; The 11-flue gas analyser; 12-flowmeter A; 13-flowmeter B; 14-demister A; 15-demister B.
The specific embodiment
Embodiment: use this law to be example with 200,000 tons of/year sulphur-burning sulphuric acid plants of certain company, the exhaust emissions amount is 43000Nm
3/ h, the sulfur dioxide (SO2) emissions index is about 300ppm, and temperature is about 65 ℃, because the emission standards for sulfur dioxide≤420ppm less than national regulation directly enters atmosphere.Nowadays, the new discharge standard≤140ppm of country will produce tail gas by former design and can not realize qualified discharge in execution on October 1 in 2013, must carry out can discharging after the step processing to device exhaust.
The said firm adopts and the inventive system comprises: desulfurizing tower 1, phosphorus ore slurry circulating slot 3, scrubbing tower 2, subsider 4 and stillness of night groove 5; The porch of desulfurizing tower 1 is provided with an air-introduced machine 7, and the spray system of desulfurizing tower 1 connects phosphorus ore slurry circulating slot 3 by phosphorus ore slurry circulating pump 8, and the bottom of desulfurizing tower 1 also has outlet to be communicated to phosphorus ore slurry circulating slot 3; The outlet conduit at desulfurizing tower 1 top is communicated to scrubbing tower 2, the spray system of scrubbing tower 2 is connected to clear liquid groove 5 by scrubbing tower circulating pump 10, scrubbing tower 2 bottoms have outlet to be communicated to subsider 4, the outlet at bottom of subsider 4 is communicated to phosphorus ore slurry circulating slot 8 by slush pump 9, and the purified liquor outlet of subsider 4 is connected to clear liquid groove 5.
Described phosphorus ore slurry circulating slot 3, subsider 4 and clear liquid groove 5 have pipeline to be connected to lead on the pipeline of scrubbing tower 2 entrances.
Be provided with agitator 6 in the described phosphorus ore slurry circulating slot 3.
Described phosphorus ore slurry circulating pump 8 is provided with flowmeter A12 with the pipeline of desulfurizing tower 1 spray system, and described scrubbing tower circulating pump 10 is provided with flowmeter B14 with the pipeline of scrubbing tower 2 spray systems.
The top of described desulfurizing tower 1 is provided with demister A14, and the top of described scrubbing tower 2 is provided with demister B15.
The top of described demister A14 is provided with spray head A, and spray head A connects waste pipe.
The top of described demister B15 is provided with spray head B, and spray head B connects waste pipe.
Described scrubbing tower 2 exits are provided with flue gas analyser 11.
Described phosphorus ore slurry adopts the used phosphorus ore slurry of phosphoric acid, its solid content: 58～66%; Granularity: quality percentage composition at least 80% is less than 200 orders; Fe
2O
3Quality percentage composition: 0.2～0.5%; P
2O
5Quality percentage composition: 30～38%.
The filtrate that the cleaning solution use ore-dressing plant of described scrubbing tower filters out or the Chi Shui of ardealite phosphorus slag.
The sulfuric acid tail gas sulphur dioxide content of the said firm after by device desulfurization of the present invention is lower than national emission standards for sulfur dioxide≤140ppm below 100ppm, realized qualified discharge.Simultaneously, whole process does not produce the three wastes and produces, and the sulphur resource is fully used, and therefore phosphor resource does not incur loss yet, and also consumes part producing waste water.
Claims (10)
1. an industrial tail gas desulfurizer is characterized in that described device comprises desulfurizing tower (1), phosphorus ore slurry circulating slot (3), scrubbing tower (2), subsider (4) and stillness of night groove (5); The porch of desulfurizing tower (1) is provided with an air-introduced machine (7), and the spray system of desulfurizing tower (1) is starched circulating pump (8) by phosphorus ore and connected phosphorus ore slurry circulating slot (3), and the bottom of desulfurizing tower (1) also has outlet to be communicated to phosphorus ore slurry circulating slot (3); The outlet conduit at desulfurizing tower (1) top is communicated to scrubbing tower (2), the spray system of scrubbing tower (2) is connected to clear liquid groove (5) by scrubbing tower circulating pump (10), scrubbing tower (2) bottom has outlet to be communicated to subsider (4), the outlet at bottom of subsider (4) is communicated to phosphorus ore slurry circulating slot (8) by slush pump (9), and the purified liquor outlet of subsider (4) is connected to clear liquid groove (5).
2. device according to claim 1 is characterized in that described phosphorus ore slurry circulating slot (3), subsider (4) and clear liquid groove (5) have pipeline to be connected to and lead on the pipeline of scrubbing tower (2) entrance.
3. device according to claim 1 is characterized in that being provided with agitator (6) in the described phosphorus ore slurry circulating slot 3.
4. device according to claim 1, it is characterized in that described phosphorus ore slurry circulating pump (8) and the pipeline of desulfurizing tower (1) spray system are provided with flowmeter A(12), described scrubbing tower circulating pump (10) is provided with flowmeter B(14 with the pipeline of scrubbing tower (2) spray system).
5. device according to claim 1 is characterized in that the top of described desulfurizing tower (1) is provided with demister A(14), the top of described scrubbing tower (2) is provided with demister B(15).
6. device according to claim 1 is characterized in that described demister A(14) the top be provided with spray head A, spray head A connects waste pipe.
7. device according to claim 1 is characterized in that described demister B(15) the top be provided with spray head B, spray head B connects waste pipe.
8. device according to claim 1 is characterized in that described scrubbing tower (2) exit is provided with flue gas analyser (11).
9. device according to claim 1 is characterized in that described phosphorus ore slurry adopts the used phosphorus ore slurry of phosphoric acid, its solid content: 58～66%; Granularity: quality percentage composition at least 80% is less than 200 orders; Fe
2O
3Quality percentage composition: 0.2～0.5%; P
2O
5Quality percentage composition: 30～38%.
10. device according to claim 1 is characterized in that filtrate or ardealite storage yard ardealite upper clear supernate that the cleaning solution of described scrubbing tower uses ore-dressing plant to filter out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101418477A CN103191637A (en) | 2013-04-23 | 2013-04-23 | Industrial exhaust gas desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101418477A CN103191637A (en) | 2013-04-23 | 2013-04-23 | Industrial exhaust gas desulfurizer |
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| Publication Number | Publication Date |
|---|---|
| CN103191637A true CN103191637A (en) | 2013-07-10 |
Family
ID=48714559
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| CN2013101418477A Pending CN103191637A (en) | 2013-04-23 | 2013-04-23 | Industrial exhaust gas desulfurizer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463903A (en) * | 2013-09-25 | 2013-12-25 | 瓮福（集团）有限责任公司 | Tail gas purifying method of ammonium sulphate by-product lime produced by ardealite |
| CN103771515A (en) * | 2013-12-30 | 2014-05-07 | 广西利达磷化工有限公司 | Arsenic slag deodorizing device by use of phosphoric acid |
| 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 |
| CN104667732A (en) * | 2015-02-27 | 2015-06-03 | 昆明川金诺化工股份有限公司 | Method for absorbing sulfur dioxide in sulfuric acid tail gas by phosphoric acid via wet process |
| CN104815547A (en) * | 2015-04-09 | 2015-08-05 | 瓮福（集团）有限责任公司 | Phosphate concentrate desulfurization system |
| CN105289264A (en) * | 2015-10-08 | 2016-02-03 | 昆明理工大学 | Method for absorbing low-concentration SO2 (sulfur dioxide) by slurrying of yellow phosphorus electroprecipitating dust |
| CN105836722A (en) * | 2016-04-08 | 2016-08-10 | 龚家竹 | A method of directly using phosphogypsum decomposition gas for wet method phosphoric acid production |
| CN106178920A (en) * | 2016-08-31 | 2016-12-07 | 陕西煤化能源有限公司 | A kind of rock phosphate in powder phosphoric acid gypsum flue gas desulphurization system and technique thereof |
| CN106345288A (en) * | 2016-08-24 | 2017-01-25 | 湖北祥云(集团)化工股份有限公司 | Method and system for utilizing phosphoric ore pulp to treat sulfur-containing flue gas |
| CN106823710A (en) * | 2016-12-30 | 2017-06-13 | 浙江海洋大学 | A kind of oil plant light-end products intermediate storage tank foul waste gas comprehensive treatment device |
| WO2017173716A1 (en) * | 2016-04-08 | 2017-10-12 | 成都千砺金科技创新有限公司 | Method for joint production of phosphogypsum decomposition gas and wet-process phosphoric acid |
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| CN101670231A (en) * | 2009-07-23 | 2010-03-17 | 刘荣甫 | Device and process for converting calcium process desulfurization into temperature difference crystallizing ammonia process desulfurization |
| CN102527223A (en) * | 2011-12-27 | 2012-07-04 | 浙江天蓝环保技术股份有限公司 | Sintering machine flue gas desulfurization process and device thereof |
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| CN203281219U (en) * | 2013-04-23 | 2013-11-13 | 瓮福（集团）有限责任公司 | Device capable of reducing (industrial tail gas) sulfur dioxide emissions |
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Patent Citations (5)
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| CN1899668A (en) * | 2006-06-30 | 2007-01-24 | 昆明理工大学 | Phosphate rock slurry catalytically oxidaizing process for removing low concentration SO2 |
| CN101670231A (en) * | 2009-07-23 | 2010-03-17 | 刘荣甫 | Device and process for converting calcium process desulfurization into temperature difference crystallizing ammonia process desulfurization |
| CN102527223A (en) * | 2011-12-27 | 2012-07-04 | 浙江天蓝环保技术股份有限公司 | Sintering machine flue gas desulfurization process and device thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463903A (en) * | 2013-09-25 | 2013-12-25 | 瓮福（集团）有限责任公司 | Tail gas purifying method of ammonium sulphate by-product lime produced by ardealite |
| CN103771515A (en) * | 2013-12-30 | 2014-05-07 | 广西利达磷化工有限公司 | Arsenic slag deodorizing device by use of phosphoric acid |
| CN103771515B (en) * | 2013-12-30 | 2015-12-30 | 广西利达磷化工有限公司 | A kind of phosphoric acid arsenic slag odor removal |
| 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 |
| CN104667732B (en) * | 2015-02-27 | 2016-03-02 | 昆明川金诺化工股份有限公司 | A kind of method utilizing phosphoric acid by wet process to absorb sulfur dioxide in sulfuric acid tail gas |
| CN104667732A (en) * | 2015-02-27 | 2015-06-03 | 昆明川金诺化工股份有限公司 | Method for absorbing sulfur dioxide in sulfuric acid tail gas by phosphoric acid via wet process |
| CN104815547A (en) * | 2015-04-09 | 2015-08-05 | 瓮福（集团）有限责任公司 | Phosphate concentrate desulfurization system |
| CN105289264A (en) * | 2015-10-08 | 2016-02-03 | 昆明理工大学 | Method for absorbing low-concentration SO2 (sulfur dioxide) by slurrying of yellow phosphorus electroprecipitating dust |
| CN105836722A (en) * | 2016-04-08 | 2016-08-10 | 龚家竹 | A method of directly using phosphogypsum decomposition gas for wet method phosphoric acid production |
| WO2017173716A1 (en) * | 2016-04-08 | 2017-10-12 | 成都千砺金科技创新有限公司 | Method for joint production of phosphogypsum decomposition gas and wet-process phosphoric acid |
| WO2017173717A1 (en) * | 2016-04-08 | 2017-10-12 | 成都千砺金科技创新有限公司 | Method for directly using phosphogypsum decomposition gas in wet phosphoric acid production |
| CN106345288A (en) * | 2016-08-24 | 2017-01-25 | 湖北祥云(集团)化工股份有限公司 | Method and system for utilizing phosphoric ore pulp to treat sulfur-containing flue gas |
| CN106345288B (en) * | 2016-08-24 | 2019-04-26 | 湖北祥云(集团)化工股份有限公司 | A kind of method and system using phosphate ore pulp processing sulfur-containing smoke gas |
| CN106178920A (en) * | 2016-08-31 | 2016-12-07 | 陕西煤化能源有限公司 | A kind of rock phosphate in powder phosphoric acid gypsum flue gas desulphurization system and technique thereof |
| CN106823710A (en) * | 2016-12-30 | 2017-06-13 | 浙江海洋大学 | A kind of oil plant light-end products intermediate storage tank foul waste gas comprehensive treatment device |
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Application publication date: 20130710 |