CN105107318A - Ammonium sulfate tail gas purification method and ammonium sulfate exhaust gas purifier - Google Patents

Ammonium sulfate tail gas purification method and ammonium sulfate exhaust gas purifier Download PDF

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Publication number
CN105107318A
CN105107318A CN201510503851.2A CN201510503851A CN105107318A CN 105107318 A CN105107318 A CN 105107318A CN 201510503851 A CN201510503851 A CN 201510503851A CN 105107318 A CN105107318 A CN 105107318A
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CN
China
Prior art keywords
tail gas
ammonium sulfate
clarifier
sulphur ammonium
oviduct
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Pending
Application number
CN201510503851.2A
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Chinese (zh)
Inventor
刘永禄
邱红
段有龙
于涛
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Acre Coking and Refractory Engineering Consulting Corp MCC
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Acre Coking and Refractory Engineering Consulting Corp MCC
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Application filed by Acre Coking and Refractory Engineering Consulting Corp MCC filed Critical Acre Coking and Refractory Engineering Consulting Corp MCC
Priority to CN201510503851.2A priority Critical patent/CN105107318A/en
Publication of CN105107318A publication Critical patent/CN105107318A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an ammonium sulfate tail gas purification method and is used for carrying out purification processing on ammonium sulfate tail gas generated by adopting a saturator method to produce ammonium sulfate. Tail gas which contains a large amount of ammonium sulfate dust and is emitted by a cyclone dust collector enters a purifier, a majority of ammonium sulfate particles and dust contained in the tail gas rush into ammonium sulfate liquor at the bottom of the purifier and are dissolved. The tail gas then passes an annular channel formed by an annular baffle and a trumpet tube, and flows upwards and contacts with countercurrent spray liquor; and remaining ammonium sulfate dust in the tail gas is absorbed and dissolved by the ammonium sulfate liquor and enters into a solution at the bottom of the purifier. The purified tail gas is discharged into atmosphere. According to the ammonium sulfate tail gas purification method provided by the invention, the ammonium sulfate dust contained in the tail gas of the cyclone dust collector after ammonium sulfate production can be removed, so that the tail gas is purified and the environment is protected; the reconstruction cost of the device and pipelines is reduced; the investment is small and can achieve quick results, and the energy consumption is low; and the provided ammonium sulfate exhaust gas purifier has the characteristics of simple structure, reasonable design and convenient operation.

Description

A kind of sulphur ammonium exhaust purifying method and sulphur ammonium exhaust purifier
Technical field
The present invention relates to the tail gas clean-up treatment technology of ammonium sulfate workshop section in coking production, particularly relate to a kind of sulphur ammonium exhaust purifying method and sulphur ammonium exhaust purifier.
Background technology
Saturator method is mostly adopted to produce sulphur ammonium with the ammonia in gas recovery in China's coking production.The tail gas of the dried rear generation of sulphur ammonium in this workshop section, after the sulphur ammonium dust that cyclone dust collectors remove wherein, is disposed to air by exhaust blower.Along with the strengthening of production and the deficiency of cyclone dust collectors self-ability, the separating effect of cyclone dust collectors worse and worse, tail gas is carried a large amount of sulphur ammonium dust secretly and is entered air, contaminated environment, and the cost of e-quipment and pipe transformation is too high, sulphur ammonium tail gas dust pollutes has become one of coking production problem demanding prompt solution.
Summary of the invention
The invention provides a kind of sulphur ammonium exhaust purifying method, for the sulphur ammonium dust contained in tail gas after removing sulphur ammonium production workshop section cyclone dust collectors, cleaning of off-gas, protection of the environment; And reducing the improvement cost of e-quipment and pipe, small investment, instant effect, energy consumption are low; What the present invention provided simultaneously has simple, reasonable in design, the easy to operate feature of structure for the sulphur ammonium exhaust purifier realizing the method.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of sulphur ammonium exhaust purifying method, for carrying out purified treatment to the sulphur ammonium tail gas adopting saturator method to produce thiamine process generation; Comprise the steps:
1) tail gas being entrained with a large amount of sulphur ammonium dust that cyclone dust collectors are discharged is transported to clarifier top through gas inlet pipe, clarifier inner chamber is entered through oviduct, oviduct internal diameter becomes ambassador's gas flow rate and sharply slows down, the suspension such as sulphur ammonium particle, dust contained in tail gas is under the effect of inertia, and major part to pour in the ammonium sulfate liquor bottom clarifier and dissolved;
2) annular spray line is established on clarifier top, and the spray mother liquor that circulating-pump outlet is drawn from sulphur ammonium production workshop section enters in annular spray line through mother liquor inlet tube and sprays downwards; Be provided with ring baffle below annular spray line, the circular passage of tail gas through being formed between ring baffle and oviduct upwards flow and with spray mother liquor counter current contacting, the residue sulphur ammonium dust in tail gas is absorbed by mother liquor and dissolves and enter in the solution bottom clarifier; Tail gas after mother liquor spray is drawn through clarifier top discharge exhaust duct, enters air.
A part of suction compensation drag losses that clarifier produces exhaust gas flow is provided by regulating the height of discharge pipe.
The gas flow rate that tail gas stream exports through oviduct is less than 1.5m/s, and determines oviduct diameter accordingly, and oviduct bottom surface is 350 ~ 500mm apart from ammonium sulfate liquor liquid level.
Bottom clarifier, ammonium sulfate liquor is regularly emptying, and uses clean water.
For realizing a kind of sulphur ammonium exhaust purifier of sulphur ammonium exhaust purifying method, comprise clarifier, described clarifier bores section forming closed cylindrical shell by top cylinder section and bottom, and top is established and extended internally and the oviduct expanded, and the osculum end of oviduct connects cyclone dust collectors by gas inlet pipe; Establish circular spray tube and ring baffle between oviduct and clarifier barrel, ring baffle is positioned at below circular spray tube, and circular spray tube connects the Recycling Mother Solution pump discharge in sulphur ammonium production workshop section by mother liquor inlet tube; Discharge pipe is established at clarifier top, and blow-down pipe is established in bottom, and middle cylinder establishes overflow pipe, and blow-down pipe is connected backflash respectively with overflow pipe, and cone section cylindrical shell establishes cleaning water pipe.
Described ring baffle is arranged to inclined downward in clarifier, and be 5 ~ 15 ° with horizontal line angle, ring baffle lowermost end is higher than oviduct bottom surface 100 ~ 200mm.
Described annular spray line is at least 2 roads, along the circumferential direction evenly arranges 2 row's spray holes bottom per pass annular spray line, and 2 row's spray holes are staggered.
Compared with prior art, the invention has the beneficial effects as follows:
1) further purified treatment is carried out to the tail gas after cyclone dust collectors, effectively can remove sulphur ammonium, dust that sulphur ammonium tail gas contains, cleaning of off-gas, protection of the environment;
2) reduce the improvement cost of e-quipment and pipe, small investment, instant effect, energy consumption are low;
3) sulphur ammonium exhaust purifier structure is simple, reasonable in design, easy to operate
4) in clarifier, ring baffle is in tilted layout, and increases gas flow resistance, has both extended the time of contact of tail gas and bottom solution, ensures that again annular spray line sprays mother liquor and fully absorbs residue sulphur ammonium and dust;
5) cone section is set bottom clarifier, and blow-down pipe and cleaning water pipe are set, ensure that tamper is discharged smoothly.
Accompanying drawing explanation
Fig. 1 is the structural representation of sulphur ammonium exhaust purifier of the present invention.
Fig. 2 is the upward view of circular spray tube of the present invention.
Fig. 3 is the A-A sectional view in Fig. 2.
Fig. 4 is that sulphur ammonium exhaust purifier of the present invention produces the layout drawing in thiamine process in saturator method.
In figure: 1. cylindrical section 2. section of cone 3. oviduct 4. gas inlet pipe 5/6. annular spray line 7. ring baffle 8. gusset 9. discharge pipe 10. mother liquor inlet tube 11. valve 1 blow-down pipe 13. valve 2 14. overflow pipe 15. valve 3 16. valve 4 17. backflash 18. cleans water pipe 19. valve 5 20. pressure fan 21. air-heater 22. ebullated dryer 23. cyclone dust collectors 24. sulphur ammonium exhaust purifier 25. exhaust blower 26. conveying worm
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
A kind of sulphur ammonium of the present invention exhaust purifying method, for carrying out purified treatment to the sulphur ammonium tail gas adopting saturator method to produce thiamine process generation; Comprise the steps:
1) tail gas being entrained with a large amount of sulphur ammonium dust that cyclone dust collectors 23 are discharged is transported to clarifier top through gas inlet pipe 4, clarifier inner chamber is entered through oviduct 3, oviduct 3 internal diameter becomes ambassador's gas flow rate and sharply slows down, the suspension such as sulphur ammonium particle, dust contained in tail gas is under the effect of inertia, and major part to pour in the ammonium sulfate liquor bottom clarifier and dissolved;
2) annular spray line 5,6 is established on clarifier top, and the spray mother liquor that circulating-pump outlet is drawn from sulphur ammonium production workshop section enters in annular spray line 5,6 through mother liquor inlet tube 10 and sprays downwards; Ring baffle 7 is provided with below annular spray line 5,6, the circular passage of tail gas through being formed between ring baffle 7 and oviduct 3 upwards flow and with spray mother liquor counter current contacting, the residue sulphur ammonium dust in tail gas is absorbed by mother liquor and dissolves and enter in the solution bottom clarifier; Tail gas after mother liquor spray is drawn through clarifier top discharge exhaust duct 9, enters air.
A part of suction compensation drag losses that clarifier produces exhaust gas flow is provided by regulating the height of discharge pipe 9.
The gas flow rate that tail gas stream exports through oviduct 9 is less than 1.5m/s, and determines oviduct 9 diameter accordingly, and oviduct 9 bottom surface is 350 ~ 500mm apart from ammonium sulfate liquor liquid level.
Bottom clarifier, ammonium sulfate liquor is regularly emptying, and uses clean water.
Seeing Fig. 1, is the structural representation of sulphur ammonium exhaust purifier of the present invention.For realizing a kind of sulphur ammonium exhaust purifier 24 of sulphur ammonium exhaust purifying method, comprise clarifier, described clarifier bores section 2 forming closed cylindrical shell by top cylinder section 1 and bottom, top is established and is extended internally and the oviduct 3 expanded, and the osculum end of oviduct 3 connects cyclone dust collectors 23 by gas inlet pipe 4; Establish circular spray tube 5,6 and ring baffle 7 between oviduct 3 and clarifier barrel, ring baffle 7 is positioned at below circular spray tube 5,6, and circular spray tube 5,6 connects the Recycling Mother Solution pump discharge in sulphur ammonium production workshop section by mother liquor inlet tube 10; Discharge pipe 9 is established at clarifier top, and blow-down pipe 12 is established in bottom, middle cylinder is established overflow pipe 14, and blow-down pipe 12 is connected backflash 17 respectively with overflow pipe 14, and cone section 2 cylindrical shell establishes cleaning water pipe 18.
Described ring baffle 7 is arranged to inclined downward in clarifier, and be 5 ~ 15 ° with horizontal line angle, ring baffle 7 lowermost end is higher than oviduct 3 bottom surface 100 ~ 200mm.
Described annular spray line 5,6 is at least 2 roads, along the circumferential direction evenly arranges 2 row's spray holes bottom per pass annular spray line 5/6, and 2 row's spray holes are staggered.(as shown in Fig. 2-Fig. 3)
In the present invention, controlled the start and stop of annular spray line 5,6 sprinkling by valve 1, and will ensure that the spray mother liquor of drawing can not destroy the water balance in saturator, in order to avoid destroy the crystallization of sulphur ammonium, affect explained hereafter; Ring-like spray line 5,6 bottom opening mode, can ensure that mother liquor sprays completely; Ring baffle 7 is fixed on barrel by gusset 8 and also realizes being obliquely installed, ring baffle 7 can increase the resistance of gas flowing, both increased the time of contact of solution in tail gas and clarifier, the mother liquor that annular spray line 5,6 can be made again to spray fully absorbs remaining sulphur ammonium and dust in tail gas.
During normal operation, valve 3 15, valve 4 16 are opened, and discharged, enter backflash 17 after ammonium sulfate liquor is elevated to certain liquid bottom clarifier by overflow pipe 14; After running a period of time, along with the rising of sulphur ammonium concentration in ammonium sulfate liquor and increasing of dust, solid particulate matter progressively increases, and easily causes pipeline blockage, now opens valve 2 13, is discharged in backflash 17 by blow-down pipe 12 by the ammonium sulfate liquor in clarifier; Then open valve 5 19, clear water enters clarifier inside through cleaning water pipe 18 and cleans, and the gradient that bottom clarifier, the section of cone 2 is arranged can make tamper discharge clarifier rapidly, and enters backflash 17 through blow-down pipe 12.
Fig. 4 is that sulphur ammonium exhaust purifier of the present invention produces the layout drawing in thiamine process in saturator method.The capital equipment adopting saturator method to produce thiamine process comprises the pressure fan 20, air-heater 21, ebullated dryer 22 and the cyclone dust collectors 23 that connect successively, and ebullated dryer 22 is connected with conveying worm 26 in addition; After sulphur ammonium exhaust purifier 24 of the present invention is arranged on cyclone dust collectors 23, its discharge pipe 9 connects exhaust blower 25 in addition.

Claims (7)

1. a sulphur ammonium exhaust purifying method, for carrying out purified treatment to the sulphur ammonium tail gas adopting saturator method to produce thiamine process generation; It is characterized in that, comprise the steps:
1) tail gas being entrained with a large amount of sulphur ammonium dust that cyclone dust collectors are discharged is transported to clarifier top through gas inlet pipe, clarifier inner chamber is entered through oviduct, oviduct internal diameter becomes ambassador's gas flow rate and sharply slows down, the suspension such as sulphur ammonium particle, dust contained in tail gas is under the effect of inertia, and major part to pour in the ammonium sulfate liquor bottom clarifier and dissolved;
2) annular spray line is established on clarifier top, and the spray mother liquor that circulating-pump outlet is drawn from sulphur ammonium production workshop section enters in annular spray line through mother liquor inlet tube and sprays downwards; Be provided with ring baffle below annular spray line, the circular passage of tail gas through being formed between ring baffle and oviduct upwards flow and with spray mother liquor counter current contacting, the residue sulphur ammonium dust in tail gas is absorbed by mother liquor and dissolves and enter in the solution bottom clarifier; Tail gas after mother liquor spray is drawn through clarifier top discharge exhaust duct, enters air.
2. a kind of sulphur ammonium exhaust purifying method according to claim 1, is characterized in that, provides a part of suction compensation drag losses that clarifier produces exhaust gas flow by regulating the height of discharge pipe.
3. a kind of sulphur ammonium exhaust purifying method according to claim 1, it is characterized in that, the gas flow rate that tail gas stream exports through oviduct is less than 1.5m/s, and determines oviduct diameter accordingly, and oviduct bottom surface is 350 ~ 500mm apart from ammonium sulfate liquor liquid level.
4. a kind of sulphur ammonium exhaust purifying method according to claim 1, it is characterized in that, bottom clarifier, ammonium sulfate liquor is regularly emptying, and uses clean water.
5. for realizing the sulphur ammonium exhaust purifier of a kind of sulphur ammonium exhaust purifying method according to claim 1, it is characterized in that, comprise clarifier, described clarifier bores section forming closed cylindrical shell by top cylinder section and bottom, top is established and is extended internally and the oviduct expanded, and the osculum end of oviduct connects cyclone dust collectors by gas inlet pipe; Establish circular spray tube and ring baffle between oviduct and clarifier barrel, ring baffle is positioned at below circular spray tube, and circular spray tube connects the Recycling Mother Solution pump discharge in sulphur ammonium production workshop section by mother liquor inlet tube; Discharge pipe is established at clarifier top, and blow-down pipe is established in bottom, and middle cylinder establishes overflow pipe, and blow-down pipe is connected backflash respectively with overflow pipe, and cone section cylindrical shell establishes cleaning water pipe.
6. the sulphur ammonium exhaust purifier of a kind of sulphur ammonium exhaust purifying method according to claim 5, it is characterized in that, described ring baffle is arranged to inclined downward in clarifier, and be 5 ~ 15 ° with horizontal line angle, ring baffle lowermost end is higher than oviduct bottom surface 100 ~ 200mm.
7. the sulphur ammonium exhaust purifier of a kind of sulphur ammonium exhaust purifying method according to claim 5, it is characterized in that, described annular spray line is at least 2 roads, along the circumferential direction evenly arranges 2 row's spray holes bottom per pass annular spray line, and 2 row's spray holes are staggered.
CN201510503851.2A 2015-08-14 2015-08-14 Ammonium sulfate tail gas purification method and ammonium sulfate exhaust gas purifier Pending CN105107318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510503851.2A CN105107318A (en) 2015-08-14 2015-08-14 Ammonium sulfate tail gas purification method and ammonium sulfate exhaust gas purifier

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Application Number Priority Date Filing Date Title
CN201510503851.2A CN105107318A (en) 2015-08-14 2015-08-14 Ammonium sulfate tail gas purification method and ammonium sulfate exhaust gas purifier

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107870105A (en) * 2017-05-04 2018-04-03 湖北航天化学技术研究所 A kind of small-scale solid rocket motor combustion product collection device
CN108499285A (en) * 2017-12-28 2018-09-07 新疆华泰重化工有限责任公司 A kind of dust-extraction unit and dust removal method of drying polyvinyl chloride tail gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107870105A (en) * 2017-05-04 2018-04-03 湖北航天化学技术研究所 A kind of small-scale solid rocket motor combustion product collection device
CN108499285A (en) * 2017-12-28 2018-09-07 新疆华泰重化工有限责任公司 A kind of dust-extraction unit and dust removal method of drying polyvinyl chloride tail gas

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Application publication date: 20151202