CN204281641U - Heat pump ethylene recovery system - Google Patents
Heat pump ethylene recovery system Download PDFInfo
- Publication number
- CN204281641U CN204281641U CN201420755885.1U CN201420755885U CN204281641U CN 204281641 U CN204281641 U CN 204281641U CN 201420755885 U CN201420755885 U CN 201420755885U CN 204281641 U CN204281641 U CN 204281641U
- Authority
- CN
- China
- Prior art keywords
- condenser
- vaporizer
- recovery system
- heat pump
- ethylene recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The utility model discloses a kind of heat pump ethylene recovery system, described system comprises ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4), compressor (8) and expansion valve (9); Described ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4) is linked in sequence; This cover system, while recovered ethylene, significantly can reduce steam consumption, ethylene recovery system more in the past can be saved mass energy, significantly improve economic benefit.And native system structure is simple, non-secondary pollution, be convenient to promote.
Description
Technical field
The utility model relates to gas recovery system, particularly heat pump ethylene recovery system.
Background technology
Ethylene oxide synthesis device has portion gas gas to need externally discharge in process of production, membrane separation plant can be utilized the ethylene recovery in discharge gas to be utilized, have good economic benefit.But due to this row's discharge temperature lower (about 25 DEG C), and wherein containing a large amount of water (being mainly saturated steam), a large amount of liquid waters can be produced in membrane separating process, liquid water can have a strong impact on membrane sepn efficiency and damage membrane separation apparatus, therefore needs, with steam heater, discharge gas is heated to supersaturation.Because heating temperature rise is large, and infiltration gas needs again cooling before workshop section's compressor after entering, and this kind of mode energy consumption is higher.
Utility model content
The utility model, for the too high problem of energy consumption in the ethylene recovery process existed in above-mentioned prior art, provides a kind of simple, reliable, energy-conservation heat pump ethylene recovery system.Concrete technical scheme is as follows.
The application provides a kind of heat pump ethylene recovery system, comprises ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4), compressor (8) and expansion valve (9); Described ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4) is linked in sequence; Described membrane separation apparatus (4) establishes tail gas output terminal (5) and infiltration gas output terminal (6); Described compressor (8) is connected with vaporizer (7) and condenser (2) with compressor air-discharging pipeline (10) respectively by compressor inleting pipe road (11); Described strainer (12) is provided with strainer inlet end (13) and filter exhaust end (14); Described expansion valve (9) two ends are connected with vaporizer (7) and condenser (2) respectively.
Further, the output terminal of tail gas described in the application (5) connects tail gas delivery conduit.
Further, permeate gas output terminal (6) described in the application and connect infiltration gas delivery conduit.
Further, the periodic off-gases of ethene described in the application exhaust side (1) connects vaporizer (7), and described compressor inleting pipe road (11) is located in vaporizer (7), forms heat transferring structure.
Further, the end of filter exhaust described in the application (14) connects condenser (2), and described compressor air-discharging pipeline (10) is located in condenser (2), forms heat transferring structure.
Further, well heater described in the application (3) is steam heater.
The heat pump ethylene recovery system that the utility model provides compared with prior art, have the following advantages: this cover system can recycle amount of heat while recovered ethylene, significantly reduce the content of water vapour after strainer, reduce the temperature (being down to 40 DEG C by 50 DEG C) that well heater needs heating, steam saving; Ethylene recovery system can significantly improve the membrane separation apparatus life-span more in the past, reduced equipment running cost, save energy, significantly improved economic benefit; And native system structure is simple, non-secondary pollution, be convenient to promote.
Accompanying drawing explanation
Fig. 1: the utility model heat pump ethylene recovery system structural representation.
In figure: 1, ethene periodic off-gases exhaust side; 2, condenser; 3, well heater; 4, membrane separation apparatus; 5, tail gas output terminal; 6, infiltration gas output terminal; 7, vaporizer; 8, compressor; 9, expansion valve; 10, compressor air-discharging pipeline; 11, compressor inleting pipe road; 12, strainer; 13, strainer inlet end; 14, filter exhaust end.
Embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the utility model.
Embodiment 1
As shown in drawings: the heat pump ethylene recovery system that the application provides, ethene periodic off-gases exhaust side 1 is comprised, vaporizer 7, strainer 12, condenser 2, well heater 3, membrane separation apparatus 4, compressor 8, and expansion valve 9, compressor inleting pipe road 11, compressor air-discharging pipeline 10, described ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4) is linked in sequence; Described membrane separation apparatus (4) establishes tail gas output terminal (5) and infiltration gas output terminal (6); Described compressor (8) is connected with vaporizer (7) and condenser (2) with compressor air-discharging pipeline (10) respectively by compressor inleting pipe road (11); Described strainer (12) is provided with strainer inlet end (13) and filter exhaust end (14); Described expansion valve (9) two ends are connected with vaporizer (7) and condenser (2) respectively; Ethene periodic off-gases exhaust side (1) connects vaporizer (7), and described compressor inleting pipe road (11) is located in vaporizer (7), forms heat transferring structure; Filter exhaust end (14) connects condenser (2), and described compressor air-discharging pipeline (10) is located in condenser (2), forms heat transferring structure.
The heat pump ethylene system specific works process that the application provides is as follows:
First (tolerance is about 2000Nm to ethene periodic off-gases
3/ h, 35 DEG C, vaporous water content is about 0.4%) enter vaporizer 7 by ethene periodic off-gases exhaust side 1, heat transmission (this heat transfer process heat-recoverable 80000kJ/h is carried out with the medium in compressor inleting pipe road 11, amount to 0.9MPa steam 40kg/h), ethene periodic off-gases enters strainer 12 after being cooled to about 20 DEG C (vaporous water content is about 0.25%, and excessive water vapor condensation is liquid water) and filters, liquid water is all separated, and then ethene periodic off-gases enters condenser 2 again.Compress through overdraft machine 8 after medium in compressor inleting pipe road 11 absorbs the heat of ethene periodic off-gases and heat up, enter condenser 2 and transfer heat to ethene periodic off-gases, after expansion valve 9 throttling cooling, enter vaporizer 7 again circulate.After ethene periodic off-gases absorbs the heat of medium in condenser 2, temperature increase is to about 35 DEG C, enter well heater 3 again and be warming up to about 40 DEG C of (water content reductions further, Heating temperature can be reduced), gas after heating enters membrane separation apparatus 4, and two strands of gases (infiltration gas and tail gas) that membrane separating process produces are sent out-of-bounds respectively by tail gas output terminal 5 and infiltration gas output terminal 6.
0.9MPa middle pressure steam 40kg/h can be saved through calculating, compared with prior art energy-conservation 60%, the infiltration temperature degree of membrane separation apparatus is only 40 DEG C simultaneously, can reduce downstream section compressor load, save facility investment, reach save energy, increase economic efficiency, the object of environmental emission reduction.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. heat pump ethylene recovery system, is characterized in that, described system comprises ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4), compressor (8) and expansion valve (9); Described ethene periodic off-gases exhaust side (1), vaporizer (7), strainer (12), condenser (2), well heater (3), membrane separation apparatus (4) is linked in sequence; Described membrane separation apparatus (4) establishes tail gas output terminal (5) and infiltration gas output terminal (6); Described compressor (8) is connected with vaporizer (7) and condenser (2) with compressor air-discharging pipeline (10) respectively by compressor inleting pipe road (11); Described strainer (12) is provided with strainer inlet end (13) and filter exhaust end (14); Described expansion valve (9) two ends are connected with vaporizer (7) and condenser (2) respectively.
2. heat pump ethylene recovery system according to claim 1, is characterized in that, described tail gas output terminal (5) connects tail gas delivery conduit.
3. heat pump ethylene recovery system according to claim 1, is characterized in that, described infiltration gas output terminal (6) connects infiltration gas delivery conduit.
4. heat pump ethylene recovery system according to claim 1, is characterized in that, described ethene periodic off-gases exhaust side (1) connects vaporizer (7), and described compressor inleting pipe road (11) is located in vaporizer (7), forms heat transferring structure.
5. heat pump ethylene recovery system according to claim 1, is characterized in that, described filter exhaust end (14) connects condenser (2), and described compressor air-discharging pipeline (10) is located in condenser (2), forms heat transferring structure.
6. heat pump ethylene recovery system according to claim 1, is characterized in that, described well heater (3) is steam heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755885.1U CN204281641U (en) | 2014-12-05 | 2014-12-05 | Heat pump ethylene recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755885.1U CN204281641U (en) | 2014-12-05 | 2014-12-05 | Heat pump ethylene recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204281641U true CN204281641U (en) | 2015-04-22 |
Family
ID=52864824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420755885.1U Expired - Fee Related CN204281641U (en) | 2014-12-05 | 2014-12-05 | Heat pump ethylene recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204281641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631667A (en) * | 2016-12-20 | 2017-05-10 | 大连欧科膜技术工程有限公司 | Method for recovering ethylene from purge gas in production process of ethylene derivatives |
-
2014
- 2014-12-05 CN CN201420755885.1U patent/CN204281641U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631667A (en) * | 2016-12-20 | 2017-05-10 | 大连欧科膜技术工程有限公司 | Method for recovering ethylene from purge gas in production process of ethylene derivatives |
| CN106631667B (en) * | 2016-12-20 | 2019-03-15 | 大连欧科膜技术工程有限公司 | The recovery method of ethylene in ethene derivatives production process periodic off-gases |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151205 |
|
| EXPY | Termination of patent right or utility model |