CN205974449U - High recovery's marsh gas pressure swing adsorption decarbonization device - Google Patents
High recovery's marsh gas pressure swing adsorption decarbonization device Download PDFInfo
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- CN205974449U CN205974449U CN201620848824.9U CN201620848824U CN205974449U CN 205974449 U CN205974449 U CN 205974449U CN 201620848824 U CN201620848824 U CN 201620848824U CN 205974449 U CN205974449 U CN 205974449U
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- swing adsorption
- pressure swing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The utility model discloses a high recovery's marsh gas pressure swing adsorption decarbonization device solves in the adsorbent bed still that remaining the higher effective gas of CH4 concentration does not have recycle, is adsorbed the CO2 gas timely system of discharging not in the adsorbent in a large number, influences the problem of the rate of recovery of adsorber. Include: marsh gas compressor, pressure swing adsorption decarbonizer, pans and vacuum pump. The pressure swing adsorption decarbonizer is through voltage -sharing operation back, remaining the higher effective gas of CH4 concentration still in the adsorbent bed, through contrary put to operate to discharge return marsh gas suction port of compressor reuse to the pans in behind the buffer memory, adsorb the CO2 gas discharge system after the vacuum pump is taken out in the adsorbent in a large number.
Description
Technical field：
This utility model belongs to gas purification technical field, is related to marsh gas purifying purification and bio-natural gas technical field,
It is specially a kind of biogas pressure-changeable adsorption decarbonization device of high-recovery.
Background technology：
The Main Ingredients and Appearance of biogas is CH4And CO2, the master operation of methane purification natural gas removes CO2, that is, affect natural pond
The pure CH of air stripping4The key of yield.Industrial at present conventional Methane decarbonization technique mainly has：High-pressure washing method, membrane separation process and
Pressure swing adsorption method.
In above-mentioned three kinds of techniques, WATER-WASHING METHOD is used for industrial gases decarburization history earliest, methane yield highest, up to 98% with
On, but because its operating pressure is high, generally 1.5～2.5MPa, washing water consumption is big, thus overall energy consumption highest；Membrance separation
Method operating pressure is taken second place, and is 1.0～1.5MPa, and energy consumption is relatively low, but methane yield is low, and about 90% about, and membrane module price is high
Expensive, film replacement cost is high.Pressure swing adsorption method operating pressure is minimum, generally 0.4～0.8MPa, and energy consumption is minimum, and methane yield is fitted
In, generally more than 90%.The above decarbonization method of Comprehensive Correlation, pressure swing adsorption technique economy is optimum, for adopting quantity the most at present
Many Methane decarbonization purifying techniques.CN 202558833 U adopts 4 or more than 4 adsorbers composition pressure swing adsorption decarbonizations
Device, adsorbent bed in still remaining CH4The higher available gas of concentration do not recycle, and are adsorbed in a large number in adsorbent
CO2The not timely discharge system of gas, the response rate of impact adsorber.
Utility model content：
The purpose of this utility model is to provide a kind of biogas pressure-changeable adsorption decarbonization device of high-recovery.
This utility model is realized in：
Raw material biogas 1 enters Marsh gas compression machine 2 with reclaiming after gas 8 mixes as unstripped gas, and biogas 3 enters and becomes after compression
Pressure absorption decarbonizer 4 carries out decarburization purification processes, and pressure swing adsorption decarbonization device 4 adopts more than 4 adsorber combinations, every adsorber
In equipped with equal number decarburization adsorbent, wherein at least has 1 adsorber to be in adsorbed state, and unstripped gas is through pressure swing adsorption decarbonization
Device 4 process after, the product natural gas 5 after purification exports, pressure swing adsorption decarbonization device 4 after equal press operation, adsorbent bed in still
Remaining CH4The higher available gas of concentration 6 are emitted into caching in pans 7 by inverse put trachea and are used as recovery gas 8 and raw material
Return the recycling of Marsh gas compression machine 2 entrance after biogas 1 mixing, be adsorbed in the CO in adsorbent in a large number2Gas 9 is through vacuum pump 10
Extract out from flue gas leading 11 discharge system.
Interconnected by sequence valve between each adsorber so as in any moment all have 1 adsorber to be inhaled
Attached purification run, remaining each all pressed respectively liter, equal pressure drop, fill eventually, inverse put, evacuation.
Described pans 7 are arranged between the inverse put trachea of pressure swing adsorption decarbonization device 4 and Marsh gas compression machine 2 input pipe, make
The inverse put gas of each adsorber switching discharge caches in this voltage stabilizing, smoothly flows to Marsh gas compression machine 2.
This utility model has as follows significantly advantage：
（1）This utility model passes through the recycling of inverse put gas, compares the device of commonly emission-free recovery system, CH4
Yield improves 5%～10%, CH in waste gas4Discharge capacity reduces 80%～90%；It is adsorbed in the CO in adsorbent in a large number2Gas is through vacuum
Discharge system after pumped.
Pressure swing adsorption decarbonization device 4 adopts vacuum desorption technique, and adsorbent bed desorbing thoroughly, compares other desorption techniques,
Product gas yield increases by 8～10%.
（2）This utility model product gas CH4Purity is high, up to 92%～99%.
（3）Device is simple, compares common pressure-changeable adsorption decarbonization device, need not additionally increase equipment.
Brief description：
Fig. 1 is structural representation of the present utility model.
Fig. 2 is 4 adsorber connection figures.
Specific embodiment：
Marsh gas compression machine 2 can be selected for helical-lobe compressor or reciprocating compressor.
Pressure swing adsorption decarbonization device 4 operating pressure is that 0.2～0.5MPa is low voltage operated.
Pressure swing adsorption decarbonization device 4 adopts vacuum desorption technique.
Below in conjunction with Figure of description, this utility model is described further.
Raw material biogas 1 enters Marsh gas compression machine 2 with reclaiming after gas 8 mixes, and biogas 3 enters pressure swing adsorption decarbonization after compression
Device 4 carries out decarburization purification, is purified rear product natural gas 5.Pressure swing adsorption decarbonization device 4 by the way of 4 adsorbers combine,
Determine the quantity of adsorber according to raw material biogas treatment scale and composition situation, setting all presses number of times, make adsorbent bed in
CH4Repeatedly reclaim, and ensure that each adsorber replaces the operation of continuous-stable.In every adsorber, the decarburization equipped with equal number is inhaled
Attached dose, wherein at least has 1 adsorber to be in adsorbed state, and remaining 3 adsorber carries out equal pressure drop, inverse put, evacuation respectively, all presses
Liter, final pressurising etc. operate.Taking certain a period of time as a example：Adsorber A is in adsorbed state（Continuing step is 5）；During this period,
Adsorber B first completes all pressures and rises（Continuing step is 1）, then complete final pressurising（Continuing step is 4；Adsorber C completes portion
Divide evacuation（Continuing step is 3）Rise with two all pressures（Continuing step is 1）；Adsorber D completes an equal pressure drop（Continuing step is
1）, two equal pressure drops（Continuing step is 1）, inverse put（Continuing step is 1）, partial vacuum（Continuing step is 1）.I.e. due to each behaviour
Make the difference of persistent period, each adsorber can be made mutually to switch connected mode, that goes round and begins again completes operations.Unstripped gas warp
Product natural gas 5 output device after pressure swing adsorption decarbonization device 4 is processed, after purification.Pressure swing adsorption decarbonization device 4 is through equal press operation
Afterwards, in adsorbent bed still remaining CH4The higher available gas of concentration 6, are emitted into caching in pans 7 by inverse put operation
The recycling of Marsh gas compression machine 2 entrance is returned as reclaiming after gas 8 is mixed with raw material biogas 1；It is adsorbed in a large number in adsorbent
CO2Gas 9 is extracted out through vacuum pump 10, and waste gas is through flue gas leading 11 discharge system.
The above is only preferred implementation of the present utility model, protection domain of the present utility model is not limited merely to above-mentioned
Embodiment, all technical schemes belonging under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that it is right
For those skilled in the art, some improvements and modifications under the premise of without departing from this utility model principle,
Should be regarded as protection domain of the present utility model.
Claims (2)
1. the biogas pressure-changeable adsorption decarbonization device of high-recovery is it is characterised in that raw material biogas（1）With recovery gas（8）Make after mixing
Enter Marsh gas compression machine for unstripped gas（2）, biogas after compression（3）Enter pressure swing adsorption decarbonization device（4）Carry out at decarburization purification
Reason, pressure swing adsorption decarbonization device is combined using at least 4 adsorbers, equipped with the decarburization adsorbent of equal number in every adsorber,
Wherein at least has 1 adsorber to be in adsorbed state, and, after the process of pressure swing adsorption decarbonization device, the product after purification is natural for unstripped gas
Gas（5）Output, pressure swing adsorption decarbonization device after equal press operation, adsorbent bed in still remaining CH4The higher effective gas of concentration
Body（6）Pans are emitted into by inverse put trachea（7）Middle caching is as recovery gas（8）, after mixing, return biogas with raw material biogas
Suction port of compressor reuses, and is adsorbed in the CO in adsorbent in a large number2Gas（9）Through vacuum pump（10）Extract out from flue gas leading（11）
Discharge system.
2. high-recovery according to claim 1 biogas pressure-changeable adsorption decarbonization device it is characterised in that each adsorber it
Between interconnected by sequence valve so as in any moment all have 1 adsorber to carry out adsorption cleaning operation, remaining each
All pressed respectively liter, equal pressure drop, fill eventually, inverse put, evacuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848824.9U CN205974449U (en) | 2016-08-08 | 2016-08-08 | High recovery's marsh gas pressure swing adsorption decarbonization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848824.9U CN205974449U (en) | 2016-08-08 | 2016-08-08 | High recovery's marsh gas pressure swing adsorption decarbonization device |
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| CN205974449U true CN205974449U (en) | 2017-02-22 |
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| CN201620848824.9U Active CN205974449U (en) | 2016-08-08 | 2016-08-08 | High recovery's marsh gas pressure swing adsorption decarbonization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008104A (en) * | 2017-05-23 | 2017-08-04 | 成都赛普瑞兴科技有限公司 | A kind of pressure-swing absorption apparatus and effective gas recovery method |
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2016
- 2016-08-08 CN CN201620848824.9U patent/CN205974449U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008104A (en) * | 2017-05-23 | 2017-08-04 | 成都赛普瑞兴科技有限公司 | A kind of pressure-swing absorption apparatus and effective gas recovery method |
| CN107008104B (en) * | 2017-05-23 | 2020-02-11 | 成都赛普瑞兴科技有限公司 | Pressure swing adsorption device and effective gas recovery method |
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