CN203699913U - Mobile carbon molecular sieve nitrogen-making device in underground coal mine - Google Patents
Mobile carbon molecular sieve nitrogen-making device in underground coal mine Download PDFInfo
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- CN203699913U CN203699913U CN201320739516.9U CN201320739516U CN203699913U CN 203699913 U CN203699913 U CN 203699913U CN 201320739516 U CN201320739516 U CN 201320739516U CN 203699913 U CN203699913 U CN 203699913U
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- Prior art keywords
- nitrogen
- molecular sieve
- air
- making device
- carbon molecular
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000002808 molecular sieve Substances 0.000 title claims abstract description 34
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 88
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 38
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 11
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000005065 mining Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000002265 prevention Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000004320 controlled atmosphere Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004079 fireproofing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to a mobile carbon molecular sieve nitrogen-making device in an underground coal mine. The mobile carbon molecular sieve nitrogen-making device comprises an air compression system arranged in an anti-explosion shell of a flat mine car, an air pretreatment system, a gas separation and nitrogen gas supplying system, and a double-PLC (Programmable Logic Controller) centralized control system. The mobile carbon molecular sieve nitrogen-making device is characterized in that the air compression system is composed of a plurality of worm air compressors and a plurality of check valves through connection, the nitrogen gas flow rate at an outlet can reach more than 2000m<3>/h and the nitrogen generation purity can reach more than 98%; the highly modular design is adopted, the whole device is formed by a plurality of flat mine cars, all modules can be connected and dismounted rapidly, and the movement is simple and quick; the air compression system is composed of a plurality of worm air compressors and a plurality of check valves through connection, so as to overcome the phenomenon of surging caused by linkage operation of the air compressors on a pressure swing adsorption device; and the double-PLC centralized control system is adopted to solve the problem that the nitrogen generation device adopting the single-control system is difficult to control.
Description
Technical field
The utility model relates to a kind of nitrogen-making device, especially relates to the coal mine underground mobile carbon molecular sieve nitrogen-making device of preventing and extinguishing fire of coal mine technical field.
Background technology
Fire failure is one of major casualty of facing of China's coal-mine, present stage, note nitrogen fireproofing technique is widely applied in China's coal-mine preventing and extinguishing fire technology field, especially for Full-mechanized Mining Face, the fire prevention of note nitrogen is the important technical of prevention spontaneous combustion in goaf, and nitrogen-making device also becomes the standing fireproofing technique equipment in colliery simultaneously.
---the evolution that cryogenic air separation unit---carbonaceous molecular sieve absorption---tunica fibrosa separates that a catalyticcombustion has been experienced in the development of nitrogen-making device substantially.
Before the seventies, Nitrogen plant multiselect catalytic combustion type type both at home and abroad, ultimate principle is burning propane taking platinum as catalyzer, constantly introducing air is to consume O
2, obtain purer N
2, it is mainly used in controlled atmosphere facility, seldom uses at present; The coke molecular sieve Nitrogen plant of exploitation at the end of the seventies, ultimate principle is by O with the great coke molecular sieve of surface-area
2adsorb and discharge the N of high density
2, carried out the test of gardening product controlled atmosphere and promoted very soon through development afterwards, seldom apply in preventing and extinguishing fire of coal mine technical field at present; Subsequently carbonaceous molecular sieve varying-voltage adsorption nitrogen machine occur, it has many advantages compared with combustion-type Nitrogen plant, without burning and cooling process, operate also relatively simple, but its exist body huge with need to change the shortcomings such as carbonaceous molecular sieve; , along with the raising of scientific and technical development and industrial processes level, there is again the equipment of making nitrogen of new generation in the eighties, i.e. membrane separation nitrogen making machine adopts one group of superfine hollow film fiber assembly, and clean pressurized air is passed through to membrane fiber assembly by O
2and N
2separately, the N that produces
2purer than catalytic combustion type, its physical construction is simpler than carbon molecular sieve nitrogen-making machine, be also easier to automatically control and operation, but be subject to the performance of membrane module own and price larger.
At present, colliery is mainly divided into cryogenic air separation method, the empty point-score of carbonaceous molecular sieve and three kinds of patterns of the empty point-score of film with nitrogen-making device.Cryogenic air separation unit nitrogen-making device equipment complexity, floor space are large, and capital cost is higher, equipment one-time investment is more, and running cost is high, and installation difficulty is large, produce product and mostly are liquid nitrogen, and aspect the daily fire prevention of China's coal-mine, application is less at present; Film separation and nitrogen-making device membrane module cost is high, after easily polluting and polluting, is difficult to repair, and work-ing life is relatively short, and underground mobile film separation and nitrogen-making device volume is little, and flexibly mobile, top hole pressure is high, but less (the only 800m of flow maximum of flow
3/ h) cannot meet efficient coal-face fire prevention demand; Carbon molecular sieve nitrogen-making device is taking carbonaceous molecular sieve as sorbent material, utilize carbonaceous molecular sieve adsorptive power difference to oxygen under different pressures, strictly control sequential by automatic control system by specific programable, pressurization absorption and decompress(ion) regeneration hocket, completing nitrogen oxygen separates, thereby obtain required high-purity nitrogen, it can be divided into ground and two kinds of forms of underground mobile.Ground type carbon molecular sieve nitrogen-making device volume is large, cannot move, for connecting in advance nitrogen feeding pipe road when prevention of Spontaneous Ignition under coal mine, need to build ground civil engineering simultaneously, invest greatlyr, and fed distance is longer, and nitrogen loses greatly on the way, especially continue apart from well head situation far away for mining face under mine, its nitrogen injection top hole pressure often cannot meet the remote needs of carrying of nitrogen.In addition, less (the only 800m of flow maximum of underground mobile carbon molecular sieve nitrogen-making device flow of Coal Mine Design application at present
3/ h), operational efficiency is lower simultaneously, and for efficient coal-face, nitrogen injection ability is obviously not enough.
Therefore, overcoming existing ground type carbon molecular sieve nitrogen-making device cannot move flexibly, fed distance length causes air leakage to increase, nitrogen injection top hole pressure is low, underground mobile carbon molecular sieve nitrogen-making device flow is little and film separation and nitrogen-making device is expensive, membrane component uses limited, anti-extinguishing ability cannot meet the shortcomings such as efficient coal-face fire prevention demand, research and develop the coal mine underground mobile carbon molecular sieve nitrogen-making device of large flow, for promoting China's portable carbon molecular sieve nitrogen-making equipment overall technology level, ensure that mine safety High-efficient Production has important practical significance.
Utility model content
The utility model object is to overcome that tradition horizontal and vertical four tower structure carbonaceous molecular sieve pressure-swing absorbers easily produce channelling effect and wall stream effect causes nitrogen purity decline processed and adsorption tower volume is huge is difficult to into well, thereby existing adsorption tower filling process causes adsorption tower internal pressure to change to be produced and impacts loss and affect carbonaceous molecular sieve work-ing life molecular sieve, single Controlling System nitrogen-making device air-flow is difficult to control and many air compressor co-operation on pressure-swing absorption apparatus easily produces surge phenomenon and causes the problem that swing adsorption nitrogen producing apparatus cannot smooth running, a kind of large flow is provided, coal mine underground mobile carbon molecular sieve nitrogen-making device, for colliery nitrogen injection provides sufficient nitrogen source.
The utility model solves the technical scheme that its technical problem adopts: a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device, it comprises the air compression system in the explosion-proof enclosure being arranged on mining dull and stereotyped mine car, air pretreatment system, gas delivery and nitrogen gas supply system, two PLC centralized monitoring systems, feature is: air compression system connects multiple reverse checkvalves by many screw air compressors and forms.
Wherein: air pretreatment system is made up of be linked in sequence accurate filter, the air cushioning tank of activated charcoal filter, high efficiency filter, multiple series connection of the high-pressure rubber pipe that connects air compression system.
Wherein: gas delivery and nitrogen gas supply system connect after two parallel connections four pressure-swing absorbers in parallel by the high-pressure rubber pipe that is connected air cushioning tank again, pressure-swing absorber in parallel is connected respectively and connects output nitrogen outlet after two nitrogen storage tanks and form between two.
The beneficial effects of the utility model are that to have nitrogen flow large, exit concentration advantages of higher, and nitrogen outlet flow reaches 2000m
3more than/h, nitrogen purity processed is more than 98%, particularly the utility model adopts high modularization design, complete assembly is made up of six mining dull and stereotyped mine cars, between modules, can connect fast, dismantle, mobile simple and fast, air compression system connects multiple reverse checkvalves by many screw air compressors and forms, solve many air compressor co-operation on pressure-swing absorption apparatus and easily produced surge phenomenon, adopt two PLC centralized monitoring systems, solve single Controlling System nitrogen-making device air-flow and be difficult to control problem.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural principle schematic diagram of the present utility model;
Fig. 2 is the structural representation that arranges of the present utility model;
Fig. 3 is of the present utility model pair of PLC centralized monitoring system principle schematic.
In figure: 1. screw air compressor one, 2. screw air compressor two, 3. activated charcoal filter, 4. high efficiency filter, 5. accurate filter, 6. air cushioning tank, 7. pressure-swing absorber, 8. nitrogen storage tank, 12. mining dull and stereotyped mine cars, 13. explosion-proof enclosures, 14. pairs of PLC centralized monitoring systems, 101. reverse checkvalve one, 102. reverse checkvalves two.
Embodiment
embodiment mono-
Referring to as shown in Figure 1, Figure 2, Fig. 3, a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device, it comprises the air compression system in the explosion-proof enclosure 13 being arranged on mining dull and stereotyped mine car 12, air pretreatment system, gas delivery and nitrogen gas supply system, two PLC centralized monitoring systems 14, feature is: air compression system is connected respectively reverse checkvalve 1 by screw air compressor 1 with screw air compressor 22 and reverse checkvalve 2 102 forms.
Wherein: air pretreatment system is made up of be linked in sequence accurate filter 5, the air cushioning tank 6 of activated charcoal filter 3, high efficiency filter 4, three series connection of the high-pressure rubber pipe that connects air compression system.
Wherein: gas delivery and nitrogen gas supply system connect after two parallel connections four pressure-swing absorbers 7 in parallel by the high-pressure rubber pipe that is connected air cushioning tank 6 again, pressure-swing absorber 7 in parallel is connected respectively two the rear connections output of nitrogen storage tank 8 nitrogen outlets and forms between two.
Wherein: two PLC centralized monitoring systems 14 are modified into explosion-proof intrinsic safety type structure for non-explosion-proof type.
Wherein: mining dull and stereotyped mine car 12 is six, place screw air compressor 22 and screw air compressor 1 for first and second, the 3rd placement activated charcoal filter 3, high efficiency filter 4, accurate filter 5, air cushioning tank 6, after two parallel connections of the 4th, the 6th placement, 7, the five of four pressure-swing absorbers of parallel connection are placed nitrogen storage tanks 8 again.
Explosion-proof enclosure 13 covers on outside screw air compressor 1, screw air compressor 22, and six mining dull and stereotyped mine cars 12 are connected in series successively, and conveniently moving is quick.
embodiment bis-
Referring to as shown in Figure 1, Figure 2, Fig. 3, a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device, it comprises the air compression system in the explosion-proof enclosure 13 being arranged on mining dull and stereotyped mine car 12, air pretreatment system, gas delivery and nitrogen gas supply system, two PLC centralized monitoring systems, feature is: air compression system is connected respectively reverse checkvalve 1 and reverse checkvalve 2 102 and reverse checkvalve three by screw air compressor 1 and screw air compressor 22 and screw air compressor three and forms.
Wherein: air pretreatment system is made up of be linked in sequence accurate filter 5, the air cushioning tank 6 of activated charcoal filter 3, high efficiency filter 4, three series connection of the high-pressure rubber pipe that connects air compression system.
Wherein: gas delivery and nitrogen gas supply system connect after two parallel connections four pressure-swing absorbers 7 in parallel by the high-pressure rubber pipe that is connected air cushioning tank 6 again, pressure-swing absorber 7 in parallel is connected respectively two the rear connections output of nitrogen storage tank 8 nitrogen outlets and forms between two.
Wherein: two PLC centralized monitoring systems 14 are modified into explosion-proof intrinsic safety type structure for non-explosion-proof type.
Wherein: mining dull and stereotyped mine car 12 is seven, place screw air compressor 22 and screw air compressor 1 and screw air compressor three for first and second and the 3rd, the 4th placement activated charcoal filter 3, high efficiency filter 4, accurate filter 5, air cushioning tank 6, after two parallel connections of the 5th, the 7th placement, 7, the six of four pressure-swing absorbers of parallel connection are placed nitrogen storage tanks 8 again.
Explosion-proof enclosure 13 covers on outside screw air compressor 1, screw air compressor 22 and screw air compressor three, and seven mining dull and stereotyped mine cars 12 are connected in series successively, and conveniently moving is quick.
This utility model operational process is by two PLC centralized monitoring system control, it passes through power cable, signal cable and pneumatic control umbilical are connected, two PLC centralized monitoring systems are coordinated each tower pressurization, decompression process, by 27 each tower absorption of program-controlled valve control and desorption process, and utilize minimum industrial pressure-swing absorber backflow calculating formula to substitute the required minimum regeneration washing amount calculation formula of continuous adsorption process, determine minimum regeneration quantity of reflux, in conjunction with PLC controller control return valve, completing carbon molecular sieve nitrogen-making device rapidly and efficiently regenerates, realize nitrogen gas purity and be less than 98% automatic-discharging function, avoid high oxygen-containing gas to enter worked-out section, solved the unmanageable difficult problem of single Controlling System nitrogen-making device air-flow by two PLC centralized monitoring systems simultaneously.
Claims (4)
1. a coal mine underground mobile carbon molecular sieve nitrogen-making device, it comprises the air compression system in the explosion-proof enclosure being arranged on mining dull and stereotyped mine car, air pretreatment system, gas delivery and nitrogen gas supply system, two PLC centralized monitoring systems, are characterised in that: air compression system connects multiple reverse checkvalves by many screw air compressors and forms.
2. a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device according to claim 1, is characterized in that: air pretreatment system is made up of be linked in sequence accurate filter, the air cushioning tank of activated charcoal filter, high efficiency filter, multiple series connection of the high-pressure rubber pipe that connects air compression system.
3. a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device according to claim 1, it is characterized in that: gas delivery and nitrogen gas supply system connect after two parallel connections four pressure-swing absorbers in parallel by the high-pressure rubber pipe that is connected air cushioning tank again, pressure-swing absorber in parallel is connected respectively and connects output nitrogen outlet after two nitrogen storage tanks and form between two.
4. a kind of coal mine underground mobile carbon molecular sieve nitrogen-making device according to claim 2, it is characterized in that: gas delivery and nitrogen gas supply system connect after two parallel connections four pressure-swing absorbers in parallel by the high-pressure rubber pipe that is connected air cushioning tank again, pressure-swing absorber in parallel is connected respectively and connects output nitrogen outlet after two nitrogen storage tanks and form between two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739516.9U CN203699913U (en) | 2013-11-19 | 2013-11-19 | Mobile carbon molecular sieve nitrogen-making device in underground coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739516.9U CN203699913U (en) | 2013-11-19 | 2013-11-19 | Mobile carbon molecular sieve nitrogen-making device in underground coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203699913U true CN203699913U (en) | 2014-07-09 |
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ID=51050380
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|---|---|---|---|
| CN201320739516.9U Expired - Lifetime CN203699913U (en) | 2013-11-19 | 2013-11-19 | Mobile carbon molecular sieve nitrogen-making device in underground coal mine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555404A (en) * | 2017-11-03 | 2018-01-09 | 中国船舶重工集团公司第七0三研究所 | A kind of integral modular nitrogen charging maintenance system |
| CN108717286A (en) * | 2018-05-25 | 2018-10-30 | 杭州天利空分设备制造有限公司 | A kind of dual controller control method |
| CN110327798A (en) * | 2019-07-11 | 2019-10-15 | 佛且环境技术(上海)有限公司 | A kind of gas concentration control system and method |
-
2013
- 2013-11-19 CN CN201320739516.9U patent/CN203699913U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555404A (en) * | 2017-11-03 | 2018-01-09 | 中国船舶重工集团公司第七0三研究所 | A kind of integral modular nitrogen charging maintenance system |
| CN108717286A (en) * | 2018-05-25 | 2018-10-30 | 杭州天利空分设备制造有限公司 | A kind of dual controller control method |
| CN108717286B (en) * | 2018-05-25 | 2020-07-21 | 杭州天利空分设备制造有限公司 | Double-controller control method |
| CN110327798A (en) * | 2019-07-11 | 2019-10-15 | 佛且环境技术(上海)有限公司 | A kind of gas concentration control system and method |
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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: 20140709 |