CN101869890A - Method for sieving catalyst in conversion process of sulfuric acid production - Google Patents
Method for sieving catalyst in conversion process of sulfuric acid production Download PDFInfo
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- CN101869890A CN101869890A CN 201010212196 CN201010212196A CN101869890A CN 101869890 A CN101869890 A CN 101869890A CN 201010212196 CN201010212196 CN 201010212196 CN 201010212196 A CN201010212196 A CN 201010212196A CN 101869890 A CN101869890 A CN 101869890A
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Abstract
A method for sieving a catalyst in a conversion process of sulfuric acid production is realized by a special sulfuric acid catalyst classifier which comprises a sieving region (1) and a dust bin (2), wherein the top of the shell of the sieving region (1) is a slant; an accelerant suction pipe (3) and a side pressure regulating tube (4) are arranged on the shell; an inclined sieve mesh (12) is arranged in the shell to divide the sieving region into an available accelerant bin (5) and a granule waste accelerant bin (6) which are respectively provided with a material outlet (7); the sieving region (1) shell is connected with the dust bin (2), and an airflow channel (8) is arranged between the sieving region (1) shell and the dust bin (2); and the dust bin (2) is internally equipped with a bag filter (9), the top part thereof is provided with an airflow outlet (10), and the upper part thereof is provided with a vacuum pipe interface (11). The method in the invention has stable equipment operation, simple operation and good effect and has the following advantages: 1) saving resources and reducing labor intensity; 2) having god dust recovery effect and being favor of environment protection and personnel health; and 3) having good sieving effect. The method is widely applicable to sieving the material the grain size of which is the same with that of the sulfuric acid catalyst.
Description
Technical field
The present invention relates to the catalyst of gas washing in SA production, also relate to screening operation, the method for sieving of conversion procedure catalyst in the gas washing in SA production.
Background technology
As everyone knows, in the sulphuric acid process, the SO in the unstripped gas
2Be converted into SO
3Need to use catalyst, catalyst commonly used is a vanadium catalyst, is vanadium catalyst in the factory again.Active component in the vanadium catalyst is V
2O
5In the production process, vanadium catalyst can be because air-flow and high temperature and efflorescence gradually.The vanadium catalyst of efflorescence can cause the obstruction of converter, increases SR, and conversion ratio is reduced.Therefore, sulfuric acid enterprise according to the mensuration of SR and conversion ratio, needs the cleaning converter after the driving certain hour, sift out the catalyst of efflorescence, replenishes the catalyst amount.Yet artificial driving is adopted in the inner catalyst screening of converter usually, and manually sieve on handling to ground, backfill again after screening is good.The catalyst that the screening converter is 1 section needs 30 people to work continuously 4 days, and totally 5 sections of converters if screening just needs great amount of manpower fully, need about 20 days consuming time, and operating efficiency is extremely low, and the repair time is very long.According to retrieval, still there is not relevant art applications Chinese patent at present.
Summary of the invention
The method for sieving that the purpose of this invention is to provide conversion procedure catalyst in the gas washing in SA production with when overhauling converter, is told available catalyst, the useless catalyst of particulate and catalyst powder with vanadium catalyst by its particle diameter apace, improves the operating efficiency of maintenance.
The method for sieving of conversion procedure catalyst is to adopt special-purpose sulfuric acid catalyst sifter to realize in the gas washing in SA production that the inventor provides, this sifter is made up of screening district and dust storehouse, screening district case top is the inclined-plane, a catalyst suction line and the secondary adjustable pipe of pressing are arranged on it, enclosure interior has a tilting screen cloth, and available catalyst storehouse and the useless catalyst storehouse of particulate are divided in screening; The useless catalyst storehouse of available catalyst storehouse and particulate has a material outlet respectively; Screening district housing links to each other with the dust storehouse, and a gas channel is arranged between them; Dust is equipped with dust-removal cloth-bag in the storehouse, and air stream outlet is arranged at the top, and the vacuum tube interface is arranged at top.
Above-mentioned catalyst suction line is connected with converter, and its diameter is 50mm～150mm; The secondary adjustable pipe of pressing is connected with the vavuum pump import, and its diameter is 100mm～150mm.
The included angle of above-mentioned screen cloth is 30 °～75 °; Mesh size is 4 * 4～12 * 12mm.
The diameter of said flow passage is 150mm.
Visor is arranged respectively at the bottom in the useless catalyst storehouse of above-mentioned catalyst storehouse and particulate; Visor is also arranged at the bottom in described dust storehouse, and visor is circular, and its diameter is φ 50mm～φ 150mm.
The filter area of above-mentioned dust-removal cloth-bag is 0.5m
2～1m
2
The operation principle of above-mentioned sifter is: sifter utilizes the vavuum pump negative pressure of vacuum in when operation, catalyst is drawn onto on the screen cloth sieves, and the particulate catalyst sifts, and flows out from the material outlet in the useless catalyst storehouse of particulate; And the qualified catalyst of granularity is stayed on the wire side, falls into available catalyst district, flows out from material outlet and carries out collecting packing on ground, and the catalyst of collection is back to converter again; The catalyst dust enters the dust storehouse by gas channel under vacuum draw, dust storehouse cloth bag relies on vacuum cleaning, and remaining air-flow utilizes the air compressor air storage tank pulse valve to extract out.
The inventor points out, though method for sieving of the present invention at be the catalyst of conversion procedure in the gas washing in SA production, in industrial production, the granular material that every particle diameter is identical with described catalyst can sieve with the inventive method.
The method for sieving of conversion procedure catalyst in the gas washing in SA production of the present invention, stable equipment operation, simple to operate, respond well.Compare with the artificial method for sieving of tradition, following advantage is arranged: 1. save the human and material resources resource, alleviate labor strength greatly; 2. the dust recovering effect is good, helps the healthy of environmental protection and operating personnel; 3. screening effect is good, and catalyst grains can be separated fully with dust.
Description of drawings
Fig. 1 is the structural representation of catalyst sifter, and Fig. 2 is the schematic diagram of screen cloth, and Fig. 3 is a cloth bag retainer schematic diagram.1 is the screening district among the figure, and 2 is the dust storehouse, and 3 is the catalyst suction line, and 4 is the secondary adjustable pipe of pressing, and 5 is available catalyst storehouse, and 6 are the useless catalyst storehouse of particulate, and 7 is material outlet, and 8 is gas channel, and 9 is dust-removal cloth-bag, and 10 is air stream outlet, and 11 is the vacuum tube interface, and 12 is screen cloth.
The specific embodiment
Embodiment:
Guiyang Zhonghua Kailin Fertilizer Co., Ltd.'s employing this method is sieved the catalyst of sulfuric acid plant conversion procedure, the catalyst sifter that designs voluntarily, installs is shown in attached Fig. 1 and 2, it is made up of screening district 1 and dust storehouse 2, screening district 1 case top is the inclined-plane, a catalyst suction line 3 and the secondary adjustable pipe 4 of pressing are arranged on it, catalyst suction line 3 is connected with converter, and the secondary adjustable pipe 4 of pressing is connected with the vavuum pump import; Enclosure interior has a tilting screen cloth 12, and the inclination angle angle of screen cloth is 70 °; The aperture of screen cloth is a catalyst 80%; Screen cloth 12 will sieve district 1 and be divided into available catalyst storehouse 5 and the useless catalyst storehouse 6 of particulate; The useless catalyst storehouse 6 of available catalyst storehouse 5 and particulate has a material outlet 7 respectively; Screening district 1 housing links to each other with dust storehouse 2, and a gas channel 8 is arranged between them; 4 dust-removal cloth-bags 9 are installed in the dust storehouse 2; Air stream outlet 10 is arranged at the top, and vacuum tube interface 12 is arranged at top.Visor is arranged respectively at the bottom in the useless catalyst storehouse 6 of available catalyst storehouse 5 and particulate; Visor is also arranged at the bottom in dust storehouse 2.
The used vavuum pump model of model machine: 2BE-250-0, maximum pumping speed: 27m
3/ min; Pump shaft rotating speed: n=980r/min, attached motor: N=37kW, n=980r/min; Import/export caliber: Φ 200/100, greatest limit pressure: 202.6kPa; Vavuum pump pump shaft rotating speed: n=740r/min, attached motor: model Y315M-8, N=75KW, n=740r/min; Used air compressor model: W-0.9/8, power of motor: 7.5kW, pressure at expulsion: 0.8MPa, capacity: 0.9m3/min.
Overhaul in 2009, the said firm uses this method for sieving, and about 20 people of the screening shared workman of catalyst about 32 hours consuming time, sieve about 40 tons of catalyst altogether.Lack than artificial screening catalyst and to use workman 20 people, minimizing 1/3 consuming time.Sifter adopts negative-pressure operation, and the catalyst dust can all be collected in whole screening process, and screening process does not have dust.This time about 40 tons of catalyst is sieved in screening altogether, collects about about 2 tons of catalyst dust.After screening finished, the catalyst after can guaranteeing to sieve can separate fully with dust, has both guaranteed operator's industrial hygiene, the satisfied screening effect of having got back.
Claims (6)
1. the method for sieving of conversion procedure catalyst in the gas washing in SA production, it is characterized in that this method is to realize with special-purpose sulfuric acid catalyst sifter, this sifter is by being made up of screening district (1) and dust storehouse (2), screening district (1) case top is the inclined-plane, a catalyst suction line (3) and the secondary adjustable pipe (4) of pressing are arranged on it, enclosure interior has a tilting screen cloth (12), and available catalyst storehouse (5) and the useless catalyst storehouse (6) of particulate are divided in screening; The useless catalyst storehouse (6) of available catalyst storehouse (5) and particulate has a material outlet (7) respectively; Screening district (1) housing links to each other with dust storehouse (2), and a gas channel (8) is arranged between them; Dust-removal cloth-bag (9) is installed in the dust storehouse (2), and air stream outlet (10) is arranged at the top, and vacuum tube interface (11) is arranged at top.
2. method for sieving according to claim 1 is characterized in that the catalyst suction line of described sifter is connected with converter, and its diameter is 50mm～150mm; The secondary adjustable pipe of pressing is connected with the vavuum pump import, and its diameter is 100mm～150mm.
3. method for sieving according to claim 1, the included angle that it is characterized in that described screen cloth are 30 °～75 °; Mesh size is 4 * 4～12 * 12mm.
4. method for sieving according to claim 1, the gas channel diameter that it is characterized in that described sifter is 150mm.
5. method for sieving according to claim 1 is characterized in that visor is arranged respectively at the catalyst storehouse of described sifter and the bottom in the useless catalyst storehouse of particulate; Visor is also arranged at the bottom in described dust storehouse, and visor is circular, and its diameter is φ 50mm～φ 150mm.
6. method for sieving according to claim 1, the dust-removal cloth-bag gross area that it is characterized in that described sifter is 0.5m
2～1m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212196 CN101869890A (en) | 2010-06-29 | 2010-06-29 | Method for sieving catalyst in conversion process of sulfuric acid production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212196 CN101869890A (en) | 2010-06-29 | 2010-06-29 | Method for sieving catalyst in conversion process of sulfuric acid production |
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|---|---|
| CN101869890A true CN101869890A (en) | 2010-10-27 |
Family
ID=42995084
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010212196 Pending CN101869890A (en) | 2010-06-29 | 2010-06-29 | Method for sieving catalyst in conversion process of sulfuric acid production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269507A (en) * | 2016-08-29 | 2017-01-04 | 金川集团股份有限公司 | A kind of system and method for catalyst screening |
| CN112495311A (en) * | 2020-10-13 | 2021-03-16 | 新疆中泰化学股份有限公司 | Low-mercury catalyst three-turn method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948764A (en) * | 1974-09-23 | 1976-04-06 | Browning-Ferris Industries, Inc. | Catalyst screening unit |
| CN86103732A (en) * | 1985-06-06 | 1986-12-03 | 罗卡格利工厂股份公司 | The screening plant that is used for granular materials such as grain |
| CN2219760Y (en) * | 1995-01-19 | 1996-02-14 | 哈尔滨工业大学 | Sealed pot type mechanical vibration sieve |
| CN2240399Y (en) * | 1995-09-28 | 1996-11-20 | 杭州高达机械有限公司 | Gas current powder grainess grading machine |
| EP0759813B1 (en) * | 1994-05-27 | 1999-07-21 | Montell North America Inc. | Method and apparatus for the classification of solid particles |
| CN101391755A (en) * | 2008-10-28 | 2009-03-25 | 云南云天化国际化工股份有限公司三环分公司 | Catalyst screening method during preparation of sulphuric acid |
| CN101736370A (en) * | 2008-11-14 | 2010-06-16 | 贵阳铝镁设计研究院 | Device for eliminating impurities in alumina |
-
2010
- 2010-06-29 CN CN 201010212196 patent/CN101869890A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948764A (en) * | 1974-09-23 | 1976-04-06 | Browning-Ferris Industries, Inc. | Catalyst screening unit |
| CN86103732A (en) * | 1985-06-06 | 1986-12-03 | 罗卡格利工厂股份公司 | The screening plant that is used for granular materials such as grain |
| EP0759813B1 (en) * | 1994-05-27 | 1999-07-21 | Montell North America Inc. | Method and apparatus for the classification of solid particles |
| CN2219760Y (en) * | 1995-01-19 | 1996-02-14 | 哈尔滨工业大学 | Sealed pot type mechanical vibration sieve |
| CN2240399Y (en) * | 1995-09-28 | 1996-11-20 | 杭州高达机械有限公司 | Gas current powder grainess grading machine |
| CN101391755A (en) * | 2008-10-28 | 2009-03-25 | 云南云天化国际化工股份有限公司三环分公司 | Catalyst screening method during preparation of sulphuric acid |
| CN101736370A (en) * | 2008-11-14 | 2010-06-16 | 贵阳铝镁设计研究院 | Device for eliminating impurities in alumina |
Non-Patent Citations (2)
| Title |
|---|
| 《硫酸工业》 20090625 唐云辉等 硫酸催化剂筛分系统装置介绍 , 第03期 * |
| 《精细化工中间体》 19790730 李爱莲 筛选触媒装置改革成功 , 第03期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269507A (en) * | 2016-08-29 | 2017-01-04 | 金川集团股份有限公司 | A kind of system and method for catalyst screening |
| CN112495311A (en) * | 2020-10-13 | 2021-03-16 | 新疆中泰化学股份有限公司 | Low-mercury catalyst three-turn method and device |
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Application publication date: 20101027 |