CN201664572U - PSA constant-pressure constant-quantity regeneration system - Google Patents

PSA constant-pressure constant-quantity regeneration system Download PDF

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Publication number
CN201664572U
CN201664572U CN2010201393433U CN201020139343U CN201664572U CN 201664572 U CN201664572 U CN 201664572U CN 2010201393433 U CN2010201393433 U CN 2010201393433U CN 201020139343 U CN201020139343 U CN 201020139343U CN 201664572 U CN201664572 U CN 201664572U
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CN
China
Prior art keywords
gas branch
branch road
gas
qualified
finished product
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Expired - Fee Related
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CN2010201393433U
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Chinese (zh)
Inventor
胡幸飞
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HANGZHOU JIDA AIR SEPARATION EQUIPMENT CO Ltd
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HANGZHOU JIDA AIR SEPARATION EQUIPMENT CO Ltd
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Priority to CN2010201393433U priority Critical patent/CN201664572U/en
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Publication of CN201664572U publication Critical patent/CN201664572U/en
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Abstract

The utility model discloses a PSA constant-pressure constant-quantity regeneration system, comprising a buffer tank; a regeneration gas branch and a finished product gas branch which are connected with the buffer tank and mutually connected with each other in parallel; a qualified gas branch and a not-qualified gas branch connected with another end of the finished product gas branch and mutually connected with each other in parallel; a gas storage tank connected with another end of the qualified gas branch, wherein another end of the not-qualified gas branch is connected with another end of the regeneration gas branch in parallel to form a regeneration gas outlet; one pressure reducing valve, one flow meter and one check valve arranged on the regeneration gas branch; one pressure reducing valve, one gas analyzer and one flow meter arranged on the finished product gas branch; an angle seat valve arranged on the not-qualified gas branch; one pneumatic butterfly valve and one check valve arranged on the qualified gas branch. The prior exhausted not-qualified finished product gas is completely used and returns together with the regeneration gas to back flush and regenerate an absorbed bed and the energy source is saved and the environmental pollution is eliminated.

Description

PSA constant voltage constant regenerative system
Technical field
The utility model relates to a kind of pressure swing adsorption air separation plant, refers more particularly to a kind of PSA constant voltage constant
Regenerative system.
Background technology
In modern industry, variable pressure absorption technique device is that the PSA device is obtaining using widely aspect gas separation and the preparation, because each adsorption tower is cycle switch operating regeneration, all adopt the mode of the finished product circulation of vital energy in the wrong direction during regeneration to blowback, long consumption of recovery time finished product gas is many, increased the unit cost of finished product gas, consume in order to reduce regeneration, people have done certain improvement to variable pressure absorption technique device, as China Patent No. is CN00218588.1, name is called the utility model patent of improved double tower pressure swing adsorption oxygen making device, the adsorption tower that comprises two nitrogen adsorption agent, product gas air accumulator, it is characterized in that: also have one be used for storing and have enough to meet the need than product gas concentration low slightly as surge tank with the purgative gas of the adsorbent reactivation in the tower, a part of high concentration product gas of the port of export of the tower of the need regeneration after the purgative gas in the surge tank is all pressed from two towers, the switching time of this each control valve of patent appropriate design and order, the size of surge tank and compensator or trimmer pressure, can obtain the high product rate of recovery and product gas concentration, but can't be used to the defective gas in the production process, emptying has in vain not only been wasted the energy but also polluted environment.
The utility model content
When the utility model mainly solves common pressure-swing absorption apparatus and prepares gas, can only emptying when gas is defective and cause the technical problem of energy waste and environmental pollution, provide a kind of the part of defective gas as regeneration gas is used, the corresponding desorption time that reduces adsorbent bed, improved the regeneration quality, save manufacturing cost, save the energy and eliminated the PSA constant voltage constant regenerative system of environmental pollution.
In order to solve the technical problem of above-mentioned existence, the utility model mainly is to adopt following technical proposals:
The utility model comprises surge tank, the regeneration gas port of export, be connected and regeneration gas branch road and finished product gas branch road connected with each other with surge tank, be connected with the other end of finished product gas branch road and qualified gas branch road connected with each other and defective gas branch road and the air accumulator that is connected with the qualified gas branch road other end, the other end of described defective gas branch road and the other end of the described regeneration gas branch road formation in parallel regeneration gas port of export, be equipped with pressure-reducing valve on described regeneration gas branch road and the finished product gas branch road, be equipped with valve on described defective gas branch road and the qualified gas branch road, defective gas returns with regeneration gas by valve adsorbent bed is carried out the blowback desorption, the defective gas of original emptying is fully utilized, reduced the adsorbent bed desorption time, improved the regeneration quality, reduced manufacturing cost, improved the quality of finished product gas, air accumulator can reduce the pulsation of exit flow, prevents in short-term and dies.
As preferably, also be provided with flowmeter and check-valves on the described regeneration gas branch road, flowmeter is located in the middle of pressure-reducing valve and the check-valves, the entrance point of check-valves is connected with flowmeter, check-valves can prevent the refluence of air-flow, flowmeter can be monitored the variation of regeneration air stream in real time, improves the regeneration quality of adsorbent bed.
As preferably, also be provided with gas analyzer and flowmeter on the described finished product gas branch road, gas analyzer is monitored the quality of finished product gas in real time, judge whether finished product gas is up to standard, as reach requirement, then finished product gas flows into air accumulator by Pneumatic butterfly valve and enters gas equipment, as not up to standard, then finished product gas mixes outflow by angle pedestal valve with regeneration gas, and adsorbent bed is carried out the blowback desorption.
As preferably, the valve on the described defective gas branch road is an angle pedestal valve.
As preferably, the valve on the described qualified gas branch road is a Pneumatic butterfly valve.
As preferably, also be provided with check-valves on the described qualified gas branch road, the entrance point of described check-valves is connected with described Pneumatic butterfly valve, and check-valves can prevent that when the Pneumatic butterfly valve fault qualified gas from backflowing and enter regenerative circuit and cause the waste of gas.
The beneficial effects of the utility model are: the defective finished product gas of original emptying is fully utilized, return with regeneration gas adsorbent bed carried out pulse cleaning, reduced adsorbent bed desorption time, improved the regeneration quality, saved the gas manufacturing cost, saved the energy and eliminated environmental pollution.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
1. surge tanks among the figure, 2. pressure-reducing valve, 3. angle pedestal valve, 4. Pneumatic butterfly valve, 5. flowmeter, 6. gas analyzer, 7. check-valves, 8. air accumulator.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the PSA constant voltage constant regenerative system of present embodiment, as shown in Figure 1, comprise surge tank 1, be connected and regeneration gas branch road and finished product gas branch road connected with each other with surge tank, be connected with the other end of finished product gas branch road and qualified gas branch road connected with each other and defective gas branch road and the air accumulator 8 that is connected with the qualified gas branch road other end, the other end of the other end of defective gas branch road and regeneration gas branch road also connects the formation regeneration gas port of export, the regeneration gas branch road is provided with pressure-reducing valve 2, flowmeter 5 and check-valves 7, flowmeter is arranged between pressure-reducing valve and the check-valves, and the entrance point of check-valves is connected with flowmeter.Finished product gas branch road is provided with pressure-reducing valve, gas analyzer 6 and flowmeter, and defective gas branch road is provided with angle pedestal valve 3, and qualified gas branch road is provided with Pneumatic butterfly valve 4 and check-valves, and the entrance point of check-valves is connected with Pneumatic butterfly valve.At work, finished product gas enters regeneration gas branch road and finished product gas branch road respectively by the buffering of surge tank, the finished product gas that enters the regeneration gas branch road is through the pressure-reducing valve step-down and after the metering and check-valves of flowmeter, flow to adsorbent bed from the regeneration gas port of export and carry out the blowback desorption, another road finished product gas enters finished product gas branch road, through the pressure-reducing valve step-down and through gas analyzer analysis and flowmeter metering, gas analyzer is by the real-time analysis to finished product gas, judge next step action, after finished product gas reaches predetermined concentration, angle pedestal valve is closed, Pneumatic butterfly valve is opened, finished product gas enters qualified gas branch road and flows into air accumulator by Pneumatic butterfly valve and check-valves, use to gas equipment, do not reach predetermined concentration as finished product gas, then Pneumatic butterfly valve is closed and angle pedestal valve is opened, finished product gas enters defective gas branch road and mixes the formation regeneration gas with the gas of regeneration gas branch road by angle pedestal valve and flows out, and adsorbent bed is carried out the blowback desorption.

Claims (6)

1. PSA constant voltage constant regenerative system, it is characterized in that: comprise surge tank (1), be connected and regeneration gas branch road and finished product gas branch road connected with each other with surge tank, be connected with the other end of finished product gas branch road and qualified gas branch road connected with each other and defective gas branch road and the air accumulator (8) that is connected with the qualified gas branch road other end, the other end of the other end of described defective gas branch road and described regeneration gas branch road also connects the formation regeneration gas port of export, be equipped with pressure-reducing valve (2) on described regeneration gas branch road and the finished product gas branch road, be equipped with valve on described defective gas branch road and the qualified gas branch road.
2. PSA constant voltage constant regenerative system according to claim 1, it is characterized in that: also be provided with flowmeter (5) and check-valves (7) on the described regeneration gas branch road, described flowmeter is located at the centre of pressure-reducing valve (2) and check-valves, and the entrance point of check-valves is connected with flowmeter.
3. PSA constant voltage constant regenerative system according to claim 1 is characterized in that: also be provided with gas analyzer (6) and flowmeter (5) on the described finished product gas branch road.
4. PSA constant voltage constant regenerative system according to claim 1 is characterized in that: the valve on the described defective gas branch road is angle pedestal valve (3).
5. PSA constant voltage constant regenerative system according to claim 1 is characterized in that: the valve on the described qualified gas branch road is Pneumatic butterfly valve (4).
6. PSA constant voltage constant regenerative system according to claim 1 or 5, it is characterized in that: also be provided with check-valves (7) on the described qualified gas branch road, the entrance point of described check-valves is connected with described Pneumatic butterfly valve (4).
CN2010201393433U 2010-03-24 2010-03-24 PSA constant-pressure constant-quantity regeneration system Expired - Fee Related CN201664572U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201393433U CN201664572U (en) 2010-03-24 2010-03-24 PSA constant-pressure constant-quantity regeneration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201393433U CN201664572U (en) 2010-03-24 2010-03-24 PSA constant-pressure constant-quantity regeneration system

Publications (1)

Publication Number Publication Date
CN201664572U true CN201664572U (en) 2010-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201393433U Expired - Fee Related CN201664572U (en) 2010-03-24 2010-03-24 PSA constant-pressure constant-quantity regeneration system

Country Status (1)

Country Link
CN (1) CN201664572U (en)

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Granted publication date: 20101208

Termination date: 20130324