CN103120888A - Method for regenerating biogas dehydration drying agent by utilizing low enthalpy energy - Google Patents
Method for regenerating biogas dehydration drying agent by utilizing low enthalpy energy Download PDFInfo
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- CN103120888A CN103120888A CN2013100724827A CN201310072482A CN103120888A CN 103120888 A CN103120888 A CN 103120888A CN 2013100724827 A CN2013100724827 A CN 2013100724827A CN 201310072482 A CN201310072482 A CN 201310072482A CN 103120888 A CN103120888 A CN 103120888A
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- energy
- low enthalpy
- biogas
- tower
- agent
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002274 desiccant Substances 0.000 title abstract description 16
- 230000018044 dehydration Effects 0.000 title abstract description 10
- 238000006297 dehydration reaction Methods 0.000 title abstract description 10
- 230000001172 regenerating effect Effects 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 abstract description 18
- 238000011069 regeneration method Methods 0.000 abstract description 18
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910001947 lithium oxide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The invention relates to a method for regenerating a biogas dehydration drying agent by utilizing a low enthalpy energy. A plurality of tower plates are arranged in a drying tower; a hot water pipe is arranged below the outer edge of each tower plate; a biogas outlet is formed at the upper part of a tower body; a biogas inlet is formed at the lower part of the tower body; a water steam outlet is formed at the top part of the tower body; drying agents are positioned on the tower plates in the drying tower; and the low enthalpy energy is used for supplying heat energy. As the method in the invention is used, the low enthalpy energy is organically associated with the regeneration of the biogas dehydration drying agent, so that the energy consumption is low; the comprehensive diversification utilization of the energy is realized; and the biogas dehydration drying agent is high in regeneration speed and long in service life. In addition, the biogas dehydration and the regeneration of the drying agent can be carried out simultaneously, so that the utilization efficiency and the production efficiency of resources are improved.
Description
Technical field
The present invention relates to the method that the low enthalpy energy regenerated methane of a kind of use dehydrates agent.
Background technology
The main component of biogas is methane, carbon dioxide, hydrogen sulfide, moisture, other gas componants on a small quantity.Biogas is obtained through anaerobic fermentation by organic matter, is regenerative resource.Along with the production of biogas and the continuous progress of process technology, economic benefit and social benefit that it is huge progressively represent.If biogas is fully utilized and develops as a kind of energy products, just must accomplish scale production, will purify, compress, separation, canned, so as on energy commodity market with other Energy Competitions.Marsh gas purifying technique mainly comprises desulfurization (depriving hydrogen sulphide), decarburization (carbon dioxide removal), dehydration (removing steam contained in biogas).
Usually, the dehydration of gas (dehumidifying) dry technology is comparative maturity, and the method that gas humidity is controlled has mechanicalness and the large class of on-mechanical two.In the mechanicalness humidity control method, traditional compression or Refrigeration Technique are in continuous perfect, and also exposing its two large deficiency is that energy consumption is large, and the working medium of compression refrigeration is unfriendly to environment; Absorption (or absorb) or dehumidifier/air-conditioning system are promising from environment and the aspect such as energy-conservation; Membrane separation technique is also one of the direction of research that dehumidifies.And the control method of on-mechanical humidity is to utilize the character of humidity adjusting material to reach the wet purpose of control; The material of controlling comprising applying solid drier, liquid absorbent, compound-dehumidifying agent, based Dehumidification Membranes, wettability etc.And in the marsh gas purifying dewatering process, usually utilize solid drier to dehumidify, dewater.Dry adsorbent has lithia, silica gel, molecular sieve, active carbon, aluminium oxide and composite drying agent etc. usually.Wherein, the lithia water absorption is large, but when absorbing water, thermal discharge is large, affects refrigerating capacity, is corrosive simultaneously; The molecular sieve dehydration ability is low, and the alumina adsorption ability is only 50% of silica gel.Silica gel absorption value performance is good, economical and practical, but after adsorbing large water gaging, easily breaks, and regeneration temperature is high, and time length, use are restricted; The composite drying agent good hygroscopicity, unstable, easy deliquescence; The desorption and regeneration energy consumption of conventional dry drying prescription is high, the time is long.In order to reduce the cost of desiccant regeneration, must solve as early as possible the problem that the consumption of desorption energy is large, the desiccant dehumidification equipment volume is large, the applicant proposes to utilize low enthalpy energy to dehydrate the technical scheme of the supplying heat source of agent regeneration as biogas at this.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of in the canned separating technology of Marsh gas compression separation, dehydrates the method for agent with low enthalpy energy regenerated methane.
The present invention solves the problems of the technologies described above with following technical scheme:
Some column plates are arranged in drying tower, hot-water line is arranged below every block of column plate; Methane outlet is arranged at tower body top, and the biogas import is arranged at the bottom, and steam outlet is arranged at the top; Drier is placed on the interior column plate of drying tower; Heat is taken from low enthalpy energy;
Mass transfer hot water is deionized water, and its heat is obtained by low enthalpy energy; The temperature of hot water is controlled at 60-80 ℃.
Drier accounts for the 80-85% of tower internal volume.
Low enthalpy energy comprises underground heat, air energy, solar energy, industrial exhaust heat and the heat energy that refrigerating gas should reclaim in the Marsh gas compression process.
Drying device can carry out online.
Use method regenerated methane of the present invention to dehydrate agent, to hang down enthalpy energy and the biogas desiccant regeneration organically links together, energy consumption is low, reached the variation comprehensive utilization of the energy, and the reproduction speed of drier is fast, long service life, the biogas dehydration can be carried out simultaneously with desiccant regeneration, has improved simultaneously utilization ratio and the production efficiency of resource.
Description of drawings
Fig. 1 dehydrates the method special equipment schematic diagram used of agent with the low enthalpy energy regenerated methane of the present invention.
In figure: 1-biogas import 2-steam outlet 3-column plate 4-hot-water line 5-methane outlet 6-drying tower
The specific embodiment
The invention belongs to a kind ofly in marsh gas purifying, drying, compression, separation, canned technique, biogas is dehydrated the method for agent regeneration, be specially adapted to the comprehensive utilization exploitation to biogas.
The inner structure form that dehydrates agent due to biogas has determined that too high regeneration temperature easily destroys its structure, makes biogas dehydrate agent and loses efficacy.Therefore the regeneration temperature of using need not very high.Therefore the inventor has selected raw material extensively to be easy to get, cost is lower, be not that very high low enthalpy energy dehydrates the main energy sources of agent as regenerated methane to equipment and specification requirement.Low enthalpy energy comprises underground heat, air energy, solar energy, industrial exhaust heat and the heat energy that refrigerating gas should reclaim in the Marsh gas compression process, generally be heated temperature less than 150 ℃, be enough to satisfy the requirement that regenerated methane dehydrates agent, all lower because of many-sided cost simultaneously, extremely be conducive to promote, popularize.
The capital equipment that the present invention uses is drying tower 6, in polylith column plate 3 is arranged, below every column plate outer, hot-water line 4 is arranged; Methane outlet 5 is arranged at tower body top, and biogas import 1 is arranged at the bottom, and steam outlet 2 is arranged at the top; Drier is placed on the interior column plate 3 of drying tower.It is 80-85% that drier accounts for the tower internal volume.
Mass transfer hot water used is deionized water, and its heat is obtained by low enthalpy energy; The temperature of hot water is controlled at 60-80 ℃.
Can carry out simultaneously biogas dehydration and desiccant dryness in drying tower.
Biogas is after entering drying tower 6, water sorption due to drier, moisture in biogas is absorbed, the moisture quantitative change of drier is large, and this moment, hot water passed in the water coil 4 of drying tower column plate 3 belows, utilized hot water that drier is carried out drying, simultaneously biogas is dewatered, steam is discharged through drying tower top exit 2, reduces the humidity of drier, reaches the purpose of desiccant regeneration.
For ease of loading and unloading drier and easy access, the tower body of drying tower is connected with tower top and is adopted flange to connect.
Embodiment 1:
| Experimental project | Experimental data |
| Low enthalpy thermal source, temperature | Underground heat, 75 ℃ |
| De-ionized water flow rate, temperature | 30L/min，90℃ |
| Composite drying agent | 65kg |
| Regeneration | On-line regeneration |
Embodiment 2:
| Experimental project | Experimental data |
| Low enthalpy thermal source, temperature | Industrial exhaust heat, 80 ℃ |
| De-ionized water flow rate, temperature | 35L/min，100℃ |
| Composite drying agent | 70kg |
| Regeneration | On-line regeneration |
The technical indicator of the biogas drier of process embodiment 1 regeneration is:
Claims (5)
1. a method that dehydrates agent with low enthalpy energy regenerated methane, is characterized in that some column plates are arranged in drying tower, and hot-water line is arranged below every block of column plate; Methane outlet is arranged at tower body top, and the biogas import is arranged at the bottom, and steam outlet is arranged at the top; Drier is placed on the interior column plate of drying tower; Heat is taken from low enthalpy energy.
2. the low enthalpy energy regenerated methane of use as claimed in claim 1 dehydrates the method for agent, it is characterized in that mass transfer hot water is deionized water, and its heat is obtained by low enthalpy energy; The temperature of hot water is controlled at 60-80 ℃.
3. the low enthalpy energy regenerated methane of use as claimed in claim 1 dehydrates the method for agent, it is characterized in that drier accounts for the 80-85% of tower internal volume.
4. the low enthalpy energy regenerated methane of use as claimed in claim 1 dehydrates the method for agent, it is characterized in that low enthalpy energy comprises underground heat, air energy, solar energy, industrial exhaust heat and the heat energy that refrigerating gas should reclaim in the Marsh gas compression process.
5. the low enthalpy energy regenerated methane of use as claimed in claim 1 dehydrates the method for agent, it is characterized in that drying device can carry out online.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072482.7A CN103120888B (en) | 2013-03-06 | 2013-03-06 | A kind of method dehydrating agent with low enthalpy energy regenerated methane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310072482.7A CN103120888B (en) | 2013-03-06 | 2013-03-06 | A kind of method dehydrating agent with low enthalpy energy regenerated methane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103120888A true CN103120888A (en) | 2013-05-29 |
| CN103120888B CN103120888B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310072482.7A Expired - Fee Related CN103120888B (en) | 2013-03-06 | 2013-03-06 | A kind of method dehydrating agent with low enthalpy energy regenerated methane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117904A (en) * | 2017-12-28 | 2018-06-05 | 天津良华新能源科技有限公司 | A kind of CNG gas stations gas drier |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135895A (en) * | 1976-09-07 | 1979-01-23 | Balzers Patent- Und Beteiligungs-Aktiengesellschaft | Pump construction for the treatment of gases with a sorbent material |
| JPH09206543A (en) * | 1996-02-06 | 1997-08-12 | Toyo Living Kk | Automatic dryer |
| CN1423101A (en) * | 2001-12-06 | 2003-06-11 | 中国科学院工程热物理研究所 | Adsorbent bed concurrent with condenser function |
| CN2757898Y (en) * | 2005-01-04 | 2006-02-15 | 华南理工大学 | Continuous absorption and desorption device of active carbon fiber fixed bed |
| CN101915442A (en) * | 2010-08-13 | 2010-12-15 | 李元哲 | Solid adsorption dehumidification device |
| CN102559775A (en) * | 2012-03-09 | 2012-07-11 | 广西大学 | Method and device utilizing solar energy to strengthen and stabilize methane output |
-
2013
- 2013-03-06 CN CN201310072482.7A patent/CN103120888B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135895A (en) * | 1976-09-07 | 1979-01-23 | Balzers Patent- Und Beteiligungs-Aktiengesellschaft | Pump construction for the treatment of gases with a sorbent material |
| JPH09206543A (en) * | 1996-02-06 | 1997-08-12 | Toyo Living Kk | Automatic dryer |
| CN1423101A (en) * | 2001-12-06 | 2003-06-11 | 中国科学院工程热物理研究所 | Adsorbent bed concurrent with condenser function |
| CN2757898Y (en) * | 2005-01-04 | 2006-02-15 | 华南理工大学 | Continuous absorption and desorption device of active carbon fiber fixed bed |
| CN101915442A (en) * | 2010-08-13 | 2010-12-15 | 李元哲 | Solid adsorption dehumidification device |
| CN102559775A (en) * | 2012-03-09 | 2012-07-11 | 广西大学 | Method and device utilizing solar energy to strengthen and stabilize methane output |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117904A (en) * | 2017-12-28 | 2018-06-05 | 天津良华新能源科技有限公司 | A kind of CNG gas stations gas drier |
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| CN103120888B (en) | 2016-04-13 |
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| CB03 | Change of inventor or designer information |
Inventor after: Huang Fuchuan Inventor after: Deng Fukang Inventor after: Huang Shizhao Inventor after: Chen Wei Inventor after: Huang Yiyao Inventor before: Huang Fuchuan Inventor before: Xiao Youcheng Inventor before: Li Sheng Inventor before: Tian Zongyi Inventor before: Zhao Zhongxing Inventor before: Tang Dankui Inventor before: Liu Kun Inventor before: Lu Chaoxia Inventor before: Mo Yufei Inventor before: Liang Jing Inventor before: Su man Rong Inventor before: Tang Xingzhong Inventor before: Tang Caizhen Inventor before: Lan Mingxin Inventor before: Li Hongjun |
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Granted publication date: 20160413 |
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