CN103301711A - Multi-tower type ventilation air methane temperature swing adsorption concentration device - Google Patents
Multi-tower type ventilation air methane temperature swing adsorption concentration device Download PDFInfo
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- CN103301711A CN103301711A CN2013102772524A CN201310277252A CN103301711A CN 103301711 A CN103301711 A CN 103301711A CN 2013102772524 A CN2013102772524 A CN 2013102772524A CN 201310277252 A CN201310277252 A CN 201310277252A CN 103301711 A CN103301711 A CN 103301711A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 161
- 238000009423 ventilation Methods 0.000 title claims abstract description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract description 40
- 238000003795 desorption Methods 0.000 claims abstract description 56
- 238000007664 blowing Methods 0.000 claims description 37
- 239000004744 fabric Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 68
- 238000000034 method Methods 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 230000008929 regeneration Effects 0.000 abstract description 9
- 238000011069 regeneration method Methods 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000010408 sweeping Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000005338 heat storage Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 36
- 230000004087 circulation Effects 0.000 description 15
- 238000010926 purge Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 239000002156 adsorbate Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- Y02P20/121—
Landscapes
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a multi-tower type ventilation air methane temperature swing adsorption concentration device. The multi-tower type ventilation air methane temperature swing adsorption concentration device comprises a ventilation air methane inlet pipe, a hot flue gas pipe, a sweeping gas inlet pipe, a ventilation air methane outlet pipe, a desorption gas outlet pipe, a sweeping gas outlet pipe and at least three adsorption towers, wherein a first pipe joint and a second pipe joint are formed in each adsorption tower, and a methane adsorption device is arranged between the first pipe joint and the second pipe joint in each adsorption tower. By virtue of a multi-adsorption-tower structure, the quantity of the combined adsorption towers can be selected according to the flow size of ventilation air; according to the characteristics of normal-temperature methane adsorption and high-temperature methane desorption of the methane adsorption devices, ventilation air methane can be concentrated through a temperature swing adsorption process; the methane desorption can be realized through waste heat flue gas of a subsequent heat storage oxidization device, and a system is low in energy consumption. Each adsorption tower in the device has cyclic functions of normal-temperature adsorption, heating desorption and cooling regeneration. The whole device is high in utilization rate and high in methane concentration capacity.
Description
Technical field
The present invention relates to a kind of gas concentrator, particularly a kind of concentrator for ventilation air gas.
Background technology
Coal mine to ventilate mash gas claims again ventilation air gas, and its methane content is low and for want of effectively utilize mode and directly enter in the atmosphere.The gas emission in China's coal-mine every year approximately has 80%～90%, discharges in the mine ventilation mode.According to the interrelated data statistics, the methane content that entered in the atmosphere by weary wind in 2008 has reached 161 billion cubic meters.Other there are some researches show, the methane greenhouse effects are about 21 times of carbon dioxide, and are extremely strong to environmental destruction.Therefore, recycling ventilation air gas has energy-conservation and the environmental protection double meaning.
The methane volume fraction is very low in the weary wind, and most coal mine wind-lack gas concentration are all below 0.3%.Process at present ventilation air gas and utilize hot counter flow oxidation technology more, existing many companies just carry out industrial test or apply in coal enterprise.But this technology has a bottleneck problem, namely only has the economical operation that just can realize equipment when ventilation air gas concentration maintains 1% left and right sides, thereby realizes higher utilization efficiency of heat energy.Especially can't promote by the mode of blending mash gas extraction in the situation of concentration for coal enterprise, by Temp .-changing adsorption concentrated make ventilation air gas concentration be promoted to 1% just become especially important.
Only has at present minority unit in the research of carrying out the coal mine wind-lack gas Adsorption Concentration, patent documentation disclosed " in the methane-rich in the mine air-lack and utilize method " (200910187318.4), " separation absorption device that contains low-concentration methane gas " (200920203210.5) have all adopted the mode of pressure-variable adsorption that ventilation air gas is concentrated, the shortcoming of pressure-variable adsorption mode is the absorption of boosting frequently, energy consumption is higher, is unfavorable for the economical operation of total system.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility, this device adopts the mode of Temp .-changing adsorption, desorption process adopts the waste heat flue gas of follow-up regenerative oxidation device, to realize reducing the energy consumption of Adsorption Concentration device, improved simultaneously the utilization efficiency of heat energy of a whole set of weary wind treatment system.
Multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility of the present invention, comprise weary wind air inlet pipe, thermal chimney, sweep gas air inlet pipe, weary wind escape pipe, desorption escape pipe, sweep gas escape pipe and at least three adsorption towers, be provided with the first pipe joint and second pipe interface on each adsorption tower, and between the first pipe joint and second pipe interface, be provided with the gas adsorption device in the adsorption tower;
The first pipe joint of described weary wind air inlet pipe and each adsorption tower is communicated with by weary wind inlet valve respectively, and the second pipe interface of described weary wind escape pipe and each adsorption tower is communicated with by weary wind outlet valve;
The second pipe interface of described thermal chimney and each adsorption tower is communicated with by the desorption inlet valve respectively, and the first pipe joint of described desorption escape pipe and each adsorption tower is communicated with by the desorption valve respectively;
The second pipe interface of described sweep gas air inlet pipe and each adsorption tower is communicated with by the cold blowing inlet valve respectively, and the first pipe joint of described sweep gas escape pipe and each adsorption tower is communicated with by the cold blowing outlet valve respectively.
Further, the gas adsorption device of described gas adsorption device for being made by NACF, and the two ends of gas adsorption device are provided with the screen cloth that is bolted.
Further, described adsorption tower is three or six.
Further, described multi-tower type ventilation air gas Adsorption Concentration device also comprises the refractory insulating layer that is wrapped in outside the adsorption tower.
Beneficial effect of the present invention:
1, multi-tower type ventilation air gas Adsorption Concentration device of the present invention, it adopts a plurality of adsorption tower structures, can select according to weary wind flow size the number of combinations of adsorption tower, and utilize gas adsorption device at normal temperatures adsorption gas, the characteristics of desorption at high temperature, realize the concentrated of ventilation air gas by temperature swing adsorption process, and the gas desorption can utilize the waste heat flue gas of follow-up regenerative oxidation device to realize, system energy consumption is low, and can improve the utilization efficiency of heat energy of whole weary wind treatment system.
2, multi-tower type ventilation air gas Adsorption Concentration device of the present invention, what each adsorption tower wherein all circulated plays a part normal temperature absorption, adds thermal desorption and cools off regeneration, and whole utilization ratio of device is high, and the gas concentrating capacity is strong.
3, multi-tower type ventilation air gas Adsorption Concentration device of the present invention, large as the specific area of the NACF of gas adsorption device, the direct perforate of micropore is in fiber surface, and the selection advantages of good adsorption effect to methane can well concentrate ventilation air gas.
Description of drawings
Fig. 1 is the structural representation of multi-tower type ventilation air gas Adsorption Concentration device of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in the figure, the present embodiment multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility, comprise weary wind air inlet pipe 1, thermal chimney 2, sweep gas air inlet pipe 3, weary wind escape pipe 4, desorption escape pipe 5, sweep gas escape pipe 6 and three adsorption towers 7, be provided with the first pipe joint 8 and second pipe interface 9 on each adsorption tower 7, and between the first pipe joint 8 and second pipe interface 9, be provided with gas adsorption device 10 in the adsorption tower 7;
The first pipe joint 8 of described weary wind air inlet pipe 1 and each adsorption tower 7 is communicated with by weary wind inlet valve 11 respectively, and the second pipe interface 9 of described weary wind escape pipe 4 and each adsorption tower 7 is communicated with by weary wind outlet valve 12;
The second pipe interface 9 of described thermal chimney 2 and each adsorption tower 7 is communicated with by desorption inlet valve 13 respectively, and the first pipe joint 8 of described desorption escape pipe 5 and each adsorption tower 7 is communicated with by desorption valve 14 respectively;
The second pipe interface 9 of described sweep gas air inlet pipe 3 and each adsorption tower 7 is communicated with by cold blowing inlet valve 15 respectively, and the first pipe joint 8 of described sweep gas escape pipe 3 and each adsorption tower 7 is communicated with by cold blowing outlet valve 16 respectively.
In implementation, thermal chimney 2 connects with the weary wind regenerative oxidation device of being connected, thereby the hot flue gas of part that weary wind regenerative oxidation device rear end produces is introduced adsorption tower 7 realize adding thermal desorption, reduction plant energy consumption that can be very large, the while can be improved the utilization efficiency of heat energy of whole weary wind treatment system.
The below is elaborated to the workflow of the present embodiment three-tower type ventilation air gas Temp .-changing adsorption enrichment facility, and three adsorption towers are distinguished called after adsorption tower A, adsorption tower B and adsorption tower C, three circulations of a complete course of work:
The absorption of circulation 1-adsorption tower A normal temperature, adsorption tower B add thermal desorption, adsorption tower C cold blowing regeneration:
Weary wind inlet valve 11 and the weary wind outlet valve 12 of adsorption tower A are opened, weary wind inlet valve 11 and the weary wind outlet valve 12 of all the other adsorption towers are closed, make weary wind enter adsorption tower A by weary wind inlet valve 11, after gas is adsorbed agent absorption, the weary wind waste gas of cleaning drains into weary wind escape pipe 4 through weary wind outlet valve 12, and is then emptying; Desorption inlet valve 13 and the desorption valve 14 of adsorption tower B are opened, desorption inlet valve 13 and the desorption valve 14 of all the other adsorption towers are closed, and the hot flue gas of desorption makes the adsorbate gas generation desorption that retains in the adsorption tower B and delivers to desorption escape pipe 5 with thermal current by adsorption tower B; Cold blowing inlet valve 15 and the cold blowing outlet valve 16 of adsorption tower C are opened, cold blowing inlet valve 15 and the cold blowing outlet valve 16 of all the other adsorption towers are closed simultaneously, make purging air enter adsorption tower C by cold blowing inlet valve 15, adsorption tower C is cooled to normal temperature to prepare to enter next adsorption process, then purging air enters sweep gas escape pipe 6 from cold blowing outlet valve 16, and weary wind escape pipe 4 converges rear emptying.
Circulation 2-adsorption tower A adds thermal desorption, adsorption tower B cold blowing regeneration, the absorption of adsorption tower C normal temperature:
Weary wind inlet valve 11 and the weary wind outlet valve 12 of adsorption tower C are opened, weary wind inlet valve 11 and the weary wind outlet valve 12 of all the other adsorption towers are closed, make weary wind enter adsorption tower C by weary wind inlet valve 11, after gas is adsorbed agent absorption, the weary wind waste gas of cleaning drains into weary wind escape pipe 4 through weary wind outlet valve 12, and is then emptying; Desorption inlet valve 13 and the desorption valve 14 of adsorption tower A are opened, desorption inlet valve 13 and the desorption valve 14 of all the other adsorption towers are closed, and the hot flue gas of desorption makes the adsorbate gas generation desorption that retains in the adsorption tower A and delivers to desorption escape pipe 5 with thermal current by adsorption tower A; Cold blowing inlet valve 15 and the cold blowing outlet valve 16 of adsorption tower B are opened, cold blowing inlet valve 15 and the cold blowing outlet valve 16 of all the other adsorption towers are closed simultaneously, make purging air enter adsorption tower B by cold blowing inlet valve 15, adsorption tower B is cooled to normal temperature to prepare to enter next adsorption process, then purging air enters sweep gas escape pipe 6 from cold blowing outlet valve 16, and weary wind escape pipe 4 converges rear emptying.
Circulation 3-adsorption tower A cold blowing regeneration, adsorption tower B heating adsorption, adsorption tower C normal temperature desorption:
Weary wind inlet valve 11 and the weary wind outlet valve 12 of adsorption tower B are opened, weary wind inlet valve 11 and the weary wind outlet valve 12 of all the other adsorption towers are closed, make weary wind enter adsorption tower B by weary wind inlet valve 11, after gas is adsorbed agent absorption, the weary wind waste gas of cleaning drains into weary wind escape pipe 4 through weary wind outlet valve 12, and is then emptying; Desorption inlet valve 13 and the desorption valve 14 of adsorption tower C are opened, desorption inlet valve 13 and the desorption valve 14 of all the other adsorption towers are closed, and the hot flue gas of desorption makes the adsorbate gas generation desorption that retains in the adsorption tower C and delivers to desorption escape pipe 5 with thermal current by adsorption tower C; Cold blowing inlet valve 15 and the cold blowing outlet valve 16 of adsorption tower A are opened, cold blowing inlet valve 15 and the cold blowing outlet valve 16 of all the other adsorption towers are closed simultaneously, make purging air enter adsorption tower A by cold blowing inlet valve 15, adsorption tower A is cooled to normal temperature to prepare to enter next adsorption process, then purging air enters sweep gas escape pipe 6 from cold blowing outlet valve 16, and weary wind escape pipe 4 converges rear emptying.
After circulation 3 finishes, return circulation 1, continuous operation goes round and begins again.The control module of can being open to the custom in the implementation process arranges the switching of each valve of control according to system.The three-tower type ventilation air gas Adsorption Concentration device course of work briefly is expressed as follows:
| Adsorption tower A | Adsorption tower B | Adsorption | |
| Circulation | |||
| 1 | Absorption | Desorption | Cold blowing |
| Circulation | |||
| 2 | Desorption | Cold blowing | Absorption |
| Circulation | |||
| 3 | Cold blowing regeneration | Absorption | Desorption |
Certainly in implementation, the adsorption tower quantity of this multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility can be according to the size of weary wind flow concrete the adjustment, its quantity more than 3 and 3 all can, as can be 4,5,6,7 etc.
In the reality, three-tower type ventilation air gas Adsorption Concentration device is applicable to little of medium weary wind flow, when weary wind flow is larger (generally greater than 10000m3/h), adopt six tower ventilation air gas Adsorption Concentration device effects better, in six adsorption towers: four adsorption towers are used for normal temperature absorption, 1 adsorption tower is used for adding thermal desorption, and 1 adsorption tower is used for cold blowing regeneration.Equally, when treating capacity was larger, the tower of available greater number made up.Analogize with the above-mentioned three-tower type Adsorption Concentration device course of work, the six tower ventilation air gas Adsorption Concentration device courses of work can followingly represent:
| ? | Adsorption tower A | Adsorption tower B | Adsorption tower C | Adsorption tower D | Adsorption tower E | Adsorption tower F |
| Circulation one | Absorption | Absorption | Absorption | Absorption | Desorption | Cold blowing |
| Circulation two | Absorption | Absorption | Absorption | Desorption | Cold blowing | Absorption |
| Circulation three | Absorption | Absorption | Desorption | Cold blowing | Absorption | Absorption |
| Circulation four | Absorption | Desorption | Cold blowing | Absorption | Absorption | Absorption |
| Circulation five | Desorption | Cold blowing | Absorption | Absorption | Absorption | Absorption |
| Circulation six | Cold blowing | Absorption | Absorption | Absorption | Absorption | Desorption |
As the improvement to the present embodiment, the gas adsorption device of described gas adsorption device 10 for being made by NACF, and the two ends of gas adsorption device 10 are provided with the screen cloth (screen cloth does not draw in the accompanying drawings) that is bolted, the specific area of NACF is large, the direct perforate of micropore is in fiber surface, selection advantages of good adsorption effect to methane can well concentrate ventilation air gas; The two ends of gas adsorption device 10 are provided with the screen cloth that is bolted simultaneously, are convenient to gas adsorption device 10 is changed.
As the improvement to the present embodiment, the present embodiment multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility also comprises the refractory insulating layer that is wrapped in outside the adsorption tower 7, refractory insulating layer does not draw in the drawings, in hot flue gas desorption process, the outside wall temperature of adsorption tower 7 is higher, refractory insulating layer is set can avoids high temperature that the staff is damaged.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility is characterized in that:
Comprise weary wind air inlet pipe, thermal chimney, sweep gas air inlet pipe, weary wind escape pipe, desorption escape pipe, sweep gas escape pipe and at least three adsorption towers, be provided with the first pipe joint and second pipe interface on each adsorption tower, and between the first pipe joint and second pipe interface, be provided with the gas adsorption device in the adsorption tower;
The first pipe joint of described weary wind air inlet pipe and each adsorption tower is communicated with by weary wind inlet valve respectively, and the second pipe interface of described weary wind escape pipe and each adsorption tower is communicated with by weary wind outlet valve;
The second pipe interface of described thermal chimney and each adsorption tower is communicated with by the desorption inlet valve respectively, and the first pipe joint of described desorption escape pipe and each adsorption tower is communicated with by the desorption valve respectively;
The second pipe interface of described sweep gas air inlet pipe and each adsorption tower is communicated with by the cold blowing inlet valve respectively, and the first pipe joint of described sweep gas escape pipe and each adsorption tower is communicated with by the cold blowing outlet valve respectively.
2. multi-tower type ventilation air gas Adsorption Concentration device according to claim 1 is characterized in that: the gas adsorption device of described gas adsorption device for being made by NACF, and the two ends of gas adsorption device are provided with the screen cloth that is bolted.
3. multi-tower type ventilation air gas Adsorption Concentration device according to claim 1, it is characterized in that: described adsorption tower is three or six.
4. multi-tower type ventilation air gas Adsorption Concentration device according to claim 1 is characterized in that: also comprise being wrapped in the outer refractory insulating layer of adsorption tower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN201310277252.4A CN103301711B (en) | 2013-07-03 | 2013-07-03 | Multi-tower type ventilation air gas Temp .-changing adsorption enrichment facility |
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| CN103301711A true CN103301711A (en) | 2013-09-18 |
| CN103301711B CN103301711B (en) | 2016-05-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014223A (en) * | 2014-06-26 | 2014-09-03 | 中煤科工集团重庆研究院有限公司 | Ventilation air methane adsorber |
| CN106823684A (en) * | 2017-03-30 | 2017-06-13 | 东北大学 | The temperature swing adsorption system and method for carbon dioxide in energy-saving separation industrial smoke |
| CN115011388A (en) * | 2022-05-26 | 2022-09-06 | 北京中源博智节能科技有限公司 | Ventilation gas concentration and enrichment method |
| CN115301037A (en) * | 2022-04-25 | 2022-11-08 | 济南嘉禾瑞丰科技开发有限公司 | High-efficient purifying column of industry VOCs waste gas |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014223A (en) * | 2014-06-26 | 2014-09-03 | 中煤科工集团重庆研究院有限公司 | Ventilation air methane adsorber |
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| CN106823684B (en) * | 2017-03-30 | 2019-07-05 | 东北大学 | The temperature swing adsorption system and method for carbon dioxide in energy-saving separation industrial smoke |
| CN115301037A (en) * | 2022-04-25 | 2022-11-08 | 济南嘉禾瑞丰科技开发有限公司 | High-efficient purifying column of industry VOCs waste gas |
| CN115301037B (en) * | 2022-04-25 | 2023-08-29 | 济南嘉禾瑞丰科技开发有限公司 | High-efficient purifying column of industry VOCs waste gas |
| CN115011388A (en) * | 2022-05-26 | 2022-09-06 | 北京中源博智节能科技有限公司 | Ventilation gas concentration and enrichment method |
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| CN103301711B (en) | 2016-05-11 |
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