CN104828785B - Gas-tightness inspection method for flue-gas acid production system - Google Patents
Gas-tightness inspection method for flue-gas acid production system Download PDFInfo
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- CN104828785B CN104828785B CN201510295884.2A CN201510295884A CN104828785B CN 104828785 B CN104828785 B CN 104828785B CN 201510295884 A CN201510295884 A CN 201510295884A CN 104828785 B CN104828785 B CN 104828785B
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- flue
- gas
- closure plate
- acid
- blower fan
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Abstract
The invention relates to a gas-tightness inspection method for a flue-gas acid production system and belongs to the field of flue-gas acid production. The gas-tightness inspection method has the advantages that by means of combining an acid production technological process, blocking plates are reasonably utilized for inspecting gas-tightness of the flue-gas acid production system, existing equipment and facilities are utilized fully, external equipment is unneeded, and accordingly, the method causes less damage to the equipment and the facilities as compared with traditional segmented gas-tightness test; gas-tightness test inspection on an acid production conversion system is achieved rapidly; the gas-tightness inspection method is simple to operate, high in practicality and inspection efficiency and remarkable in effect.
Description
Technical field
The present invention relates to a kind of flue gas acid preparing system air-tightness inspection method, belong to flue gas acid preparing field.
Background technology
The primary raw material of flue gas acid preparing is so2Flue gas, belongs to toxic and harmful, if conversion system equipment, pipe leakage
The pollution of surrounding will be directly contributed, also the occupational health of employee will be threatened simultaneously, therefore conversion system must be owned
Installations and facilities, pipeline carry out air-tight test；Existing acid making system conversion system has 34 temperature detecting point, 24 pressure inspections
Measuring point, and pipe diameter is not of uniform size, minimum diameter is dn 500 mm, and maximum gauge is dn 1400 mm, more than 800 bar altogether
Weld seam.If closure plate being installed using traditional method segmentation, and perforate carrying out air-tightness examination using air compressor machine between two pieces of closure plates
Test, the making of 36 pieces of closure plates, installation must be completed altogether, remove work, also have 36 road weld seams still to fire presence simultaneously after closure plate is removed and let out
The risk of leakage.
Content of the invention
The present invention be directed to flue gas acid preparing conversion system zero leakage, prevent toxic and harmful and concentrated sulphuric acid leakage, prevent
The generation of safety and environmental protection event, quickly realizes acid making system conversion system airtight test, has quick, convenient, hand labor
Intensity is little, low cost, the features such as efficiency high, has good safety benefit, environmental benefit and economic benefit.
In order to achieve the above object, the following technical scheme of present invention proposition:
A kind of flue gas acid preparing system air-tightness inspection method, comprises the following steps:
1) according to acid-making process flow process, the circulating pump groove entrance acid tube on absorption tower or absorption tower backflow acid tube and are closed
Inhale tower, the closure plate of two suction tower entrance acid tubes installations, confirm whether each layer manhole of a conversion zone of conversion system blocks；
2) open blower fan, according to from fan outlet to the pipeline rout of a suction tower, all welderings of conversion zone of sequential search
Seam, flange, manhole cover position whether there is leakage, and check that converter once converts to whether there is with the dividing plate of twice transformation and let out
Leakage；
3) open blower fan, according to from fan outlet to the pipeline routs of two suction towers, conversion zone weld seam of check, flange,
Whether manhole cover has leak test；And sequential search twice transformation section and the absorption tower backflow all weld seams of acid tube, flange, manhole cover
Whether leak；
4) check out leak source, carry out mark, stop blower fan, repair welding is carried out to leak source；After the completion of welding, repeat to open wind
Machine, adjusts system wind pressure 40-46kpa, according to step 1), 2), 3) repeat leak source is checked, processed to all leak sources
Become.
Further, increase closure plate, closure plate, closure plate, described closure plate is according to the determination of field pipes diameter, closure plateBlock
Absorption tower circulating pump groove entrance acid tube, closure plateBlock a suction tower entrance acid tube, closure plateBlock two suction tower entrance acid tubes.
Further, a described conversion zone is one layer, two layers, three layers of conversion coating of converter, concentrated sulphuric acid pipe and once turning
Change section flue；It is 40-46kpa that blower fan need to provide blast.
Further, described twice transformation section is four layers of conversion coating and the twice transformation section flue of converter；Blower fan needs
Offer blast is 40-46kpa.
Beneficial effects of the present invention:
The present invention takes full advantage of existing equipment facility it is not necessary to using the equipment outside system；Do with traditional segmentation
Air-tight test is compared, and reduces the damage to installations and facilities；Quickly achieve the air-tight test inspection of antacid conversion system；Complete
Become the cost needed for conversion system air-tight test relatively low；This method is simple to operate, practical, check that efficiency high, effect show
Write.
Brief description
Fig. 1 is closure plate schematic view of the mounting position of the present invention；
Fig. 2 is traditional structure closure plate scheme of installation；
Fig. 3 is flue gas acid preparing process chart；
In figure, 1- absorption tower circulating pump groove, 2- mono- inhale tower, 3- bis- inhales tower, 4- heat exchanger, 5- heat exchanger, 6- heat
Exchanger, 7- heat exchanger, 8- converter, 9- blower fan, 10- drying tower, 11- tail gas funnel,
Flue a, 12b- of conversion zone flue: 12a- of 12- cigarette of flue b, a 12c-
Flue e, 12f- of flue d, 12e- of feed channel c, 12d- fume pipe of flue f, a 12g-
Flue i, 12j- of flue h, 12i- of road g, 12h- flue k of flue j, a 12k-,
12l- flue m of flue l, a 12m-；
13- twice transformation section flue: 13a- secondary flue gas pipeline a, 13b- secondary flue gas pipeline b；
14- closure plate, 15- closure plate, 16- closure plate, one layer of 17- converter, two layers of 18- converter, 19- converter three
Layer, four layers of 20- converter, 21- concentrated sulphuric acid pipe, 22- absorb sour pump, 23- pump discharge valve, 24- valve, 25- valve.
Specific embodiment
Below in conjunction with the embodiment of the present invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Apply example, broadly fall into the scope of protection of the invention.
A kind of flue gas acid preparing system air-tightness inspection method, comprises the following steps:
1) according to acid-making process flow process as shown in Figure 3, the circulating pump groove 1 entrance acid tube on absorption tower or absorption tower are closed
Backflow acid tube and one is inhaled tower 2, two and is inhaled the closure plate that the entrance acid tube of tower 3 is installed14th, closure plate15th, closure plate16, confirm to turn
Whether each layer manhole of conversion zone of change system blocks, closure plate14th, closure plate15th, closure plate16 set location is shown in figure
1, increase closure plate14th, closure plate15th, closure plate16, the diameter of closure plate determines according to field pipes diameter.
2) open blower fan 9, according to the pipeline rout being exported to a suction tower 2 from blower fan 9, conversion zone of sequential search owns
Whether weld seam, flange, manhole cover position whether there is leakage, and check that converter 8 once converts and deposit with the dividing plate of twice transformation
In leakage；
3) open blower fan 9, according to the pipeline rout being exported to two suction towers 3 from blower fan 9, check conversion zone weld seam, a method
Whether blue, manhole cover has leak test；And sequential search twice transformation section and the absorption tower backflow all weld seams of acid tube, flange, people
Whether port lid leaks；
4) check out leak source, carry out mark, stop blower fan, repair welding is carried out to leak source；After the completion of welding, repeat to open wind
Machine, adjusts system wind pressure 40-46kpa, according to step 1), 2), 3) repeat leak source is checked, processed to all leak sources
Become.
A described conversion zone is one layer 17 of the converter of converter 8, two layer 18 of converter, three layer 19 of converter, dense sulfur
Acid tube 21 and a conversion zone flue, conversion zone flue include flue a, flue b,
Flue c, flue d, flue e, flue f, flue g, a cigarette
Feed channel h, flue i, flue j, flue k, flue l, a flue
m；It is 40-46kpa that blower fan 9 need to provide blast.
Described twice transformation section is four layer 20 of converter and the twice transformation section flue of converter 8, twice transformation section
Flue includes secondary flue gas pipeline a and secondary flue gas pipeline b；It is 40-46kpa that blower fan 9 need to provide blast.
The present invention takes full advantage of existing equipment facility it is not necessary to using the equipment outside system；Do with traditional segmentation
Air-tight test is compared, and reduces the damage to installations and facilities；And quickly realize acid making system conversion system airtight test, have
Quickly, convenient, hand labor intensity is little, low cost, the features such as efficiency high.
Finally, above example and accompanying drawing be only in order to illustrate technical scheme and unrestricted, although by above-mentioned
Embodiment is described in detail to the present invention, it is to be understood by those skilled in the art that can in form and carefully
Various changes are made to it, without departing from claims of the present invention limited range on section.
Claims (2)
1. a kind of flue gas acid preparing system air-tightness inspection method is it is characterised in that comprise the following steps:
1) according to acid-making process flow process, close the circulating pump groove entrance acid tube on absorption tower or absorption tower backflow acid tube, close simultaneously
Close a suction tower, the closure plate of two suction tower entrance acid tubes installations, confirm whether each layer manhole of a conversion zone of conversion system blocks；
2) open blower fan, according to from fan outlet to the pipeline rout of a suction tower, all weld seams of conversion zone of sequential search, method
Blue, manhole cover position whether there is leakage, and check that converter once converts and whether there is leakage, institute with the dividing plate of twice transformation
Stating a conversion zone is one layer, two layers, three layers of conversion coating, concentrated sulphuric acid pipe and a conversion zone flue of converter；Blower fan
Blast need to be provided to be 40-46kpa；
3) open blower fan, check conversion zone weld seam, flange, a manhole according to from fan outlet to the pipeline rout of two suction towers
Whether lid has leakage；And whether sequential search twice transformation section and the absorption tower backflow all weld seams of acid tube, flange, manhole cover let out
Leakage, described twice transformation section is four layers of conversion coating and the twice transformation section flue of converter；It is 40- that blower fan need to provide blast
46kpa；
4) check out leak source, carry out mark, stop blower fan, repair welding is carried out to leak source；After the completion of welding, repeat to open blower fan, adjust
Whole system wind pressure 40-46kpa, according to step 1), 2), 3) repeat leak source is checked, process to all leak sources and complete.
2. a kind of flue gas acid preparing system air-tightness inspection method according to claim 1 it is characterised in that: increase closure plate、
Closure plate, closure plate, closure plate diameter is according to the determination of field pipes diameter, closure plateBlock absorption tower circulating pump groove entrance acid tube, block up
PlateBlock a suction tower entrance acid tube, closure plateBlock two suction tower entrance acid tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295884.2A CN104828785B (en) | 2015-06-03 | 2015-06-03 | Gas-tightness inspection method for flue-gas acid production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295884.2A CN104828785B (en) | 2015-06-03 | 2015-06-03 | Gas-tightness inspection method for flue-gas acid production system |
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| Publication Number | Publication Date |
|---|---|
| CN104828785A CN104828785A (en) | 2015-08-12 |
| CN104828785B true CN104828785B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510295884.2A Active CN104828785B (en) | 2015-06-03 | 2015-06-03 | Gas-tightness inspection method for flue-gas acid production system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424297Y2 (en) * | 1973-06-20 | 1979-08-17 | ||
| FR2693125A1 (en) * | 1992-07-03 | 1994-01-07 | Socrematic | Treating waste gas contg. sulphur and nitrogen oxide(s) - with cerium-contg. oxidising soln. to recover nitric and sulphuric acids |
| CN201512414U (en) * | 2009-06-22 | 2010-06-23 | 瓮福（集团）有限责任公司 | High-temperature gas adjusting device for sulfur-burning sulfuric acid production |
| CN102530887A (en) * | 2012-01-09 | 2012-07-04 | 周开敏 | Method for sulfuric acid conversion heating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424297A (en) * | 1977-07-25 | 1979-02-23 | Unitika Ltd | Recovering method for sulfuric acid from exhaust gas |
-
2015
- 2015-06-03 CN CN201510295884.2A patent/CN104828785B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424297Y2 (en) * | 1973-06-20 | 1979-08-17 | ||
| FR2693125A1 (en) * | 1992-07-03 | 1994-01-07 | Socrematic | Treating waste gas contg. sulphur and nitrogen oxide(s) - with cerium-contg. oxidising soln. to recover nitric and sulphuric acids |
| CN201512414U (en) * | 2009-06-22 | 2010-06-23 | 瓮福（集团）有限责任公司 | High-temperature gas adjusting device for sulfur-burning sulfuric acid production |
| CN102530887A (en) * | 2012-01-09 | 2012-07-04 | 周开敏 | Method for sulfuric acid conversion heating |
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| Publication number | Publication date |
|---|---|
| CN104828785A (en) | 2015-08-12 |
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Inventor after: Sun Chengyu Inventor after: Zhang Zhenguo Inventor after: Ma Haiya Inventor after: Chai Wei Inventor after: Zhang Wei Inventor after: Bao Zikun Inventor after: Ma Yunchuan Inventor after: Wang Kaka Inventor after: Pi Zhongbin Inventor after: Zhang Yalin Inventor after: Jiang Zelin Inventor after: Li Yongfeng Inventor after: Li Xuegeng Inventor before: Sun Chengyu Inventor before: Chen Yougao Inventor before: Zhu Guoshun Inventor before: Li Yun Inventor before: Bao Zikun Inventor before: Jiang Rongsheng Inventor before: Qu Hongtao Inventor before: Lv Yabiao Inventor before: Yang Yunchuan Inventor before: Li Jikai Inventor before: Gu Likun Inventor before: Sun Sijing |
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