CN204727795U - A kind of ethylene recycle recovery system - Google Patents
A kind of ethylene recycle recovery system Download PDFInfo
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- CN204727795U CN204727795U CN201520344263.4U CN201520344263U CN204727795U CN 204727795 U CN204727795 U CN 204727795U CN 201520344263 U CN201520344263 U CN 201520344263U CN 204727795 U CN204727795 U CN 204727795U
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- Prior art keywords
- ethylene
- recovery system
- vacuum pump
- adsorption
- adsorption tanks
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000005977 Ethylene Substances 0.000 title claims abstract description 36
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 238000001179 sorption measurement Methods 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000002594 sorbent Substances 0.000 abstract description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract description 2
- 239000006200 vaporizer Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003375 plant hormone Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a kind of ethylene recycle recovery system, the refrigeration agent machine evaporator cools of-120 DEG C of vaporization temperatures can be provided to liquefy by first being passed through by ethylene gas, then enter adsorption tanks and carry out low-concentration ethane gas adsorption, the enrichment ethylene gas parsed enters the vaporizer circulating cooling of refrigerator again, solves the problem that adsorption type ethylene recovery unit efficiency is low, emission concentration is high that ethene handling place is commonly used.This device eliminate adsorption system after enriched gas separately prepare the investment of cold, the refrigerator before adsorption system is utilized ethylene gas major part to be liquefied, greatly save adsorption tanks size, decrease the loading level of sorbent material, improve the Recovery rate of ethylene of whole recovery system simultaneously, reduce exhaust emissions concentration.
Description
Technical field
The utility model relates to ethene liquefaction field, particularly relates to a kind of ethylene recycle recovery system.
Background technology
In chemical engineering, ethene is the basic chemical raw materials of synthon, synthetic rubber, synthetic plastics (polyethylene and polyvinyl chloride), synthesizing alcohol (alcohol), also for the manufacture of vinylchlorid, ethene, oxyethane, acetic acid, acetaldehyde, ethanol and explosive etc., also can be used as the ripener of fruits and vegetables, is a kind of certified plant hormone.The free ethene of a large amount of effusion of meeting in the processes such as ethene manufacture, handling and accumulating, thus produce a large amount of ethene exhaust gas emissions.The ethene administration way that past is commonly used mainly contains: catalyzed oxidation, absorption, membrane sepn, condensation etc.The enriched gas parsed will the absorption tower in face or refrigeration system be dissolved or liquefaction by past conventional absorption method usually rearward, and thus floor space is large, working cost is high, and ethylene recovery unit efficiency is low simultaneously, emission concentration is high.
The utility model is by ethylene gas first through providing the refrigeration agent machine evaporator cools of-120 DEG C of vaporization temperatures to liquefy, and then enter adsorption tanks and carry out low-concentration ethane gas adsorption, the enrichment ethylene gas parsed enters the vaporizer circulating cooling of refrigerator again.Improve the Recovery rate of ethylene of whole recovery system, reduce exhaust emissions concentration.
Utility model content
Utility model object: in order to overcome the problem that adsorption type ethylene recovery unit efficiency is low, emission concentration is high that in prior art, ethene handling place is commonly used, the utility model provides a kind of ethylene recycle recovery system, the effect of the loading level reach and save adsorption tanks size, reducing sorbent material, the Recovery rate of ethylene improving whole recovery system and reduction exhaust emissions concentration.
Technical scheme: for achieving the above object, ethylene recycle recovery system of the present utility model comprises: refrigerator, container for storing liquid, adsorption tanks, vacuum pump and pneumavalve, and refrigerator comprises and connects formed refrigerant circulation loop successively by plate-fin evaporator, semi-hermetic reciprocating refrigeration compressor, oil separator, water-cooled condenser, expansion valve; Described plate-fin evaporator is provided with inlet mouth, air outlet and liquid outlet, liquid outlet is connected with container for storing liquid; The bottom of described adsorption tanks is provided with air intake, air intake by intake valve with resolve valve and be connected with the air outlet of plate-fin evaporator and described vacuum pump respectively, described vacuum pump is connected the inlet mouth of described plate-fin evaporator with by pneumavalve.
The air-flow caused when starting or stoping in order to avoid vacuum pump is unstable, is also provided with gas-holder between described vacuum pump and described pneumavalve.
In order to control the start and stop of vacuum pump and pneumavalve better, both guarantees work asynchronously, and this system also comprises housing, and described vacuum pump is electrically connected with described housing respectively with described pneumavalve.
In order to improve adsorption efficiency, described adsorption tanks are several, are connected with the air outlet of described plate-fin evaporator respectively by each self-corresponding intake valve, are connected with described vacuum pump respectively by respective parsing valve.
In order to control the circulation throttling of refrigeration agent in refrigerator better, described expansion valve is electric expansion valve.
In order to prevent methanol gas from firing in compression process, described semi-hermetic reciprocating refrigeration compressor adopts fire proof motor and anti-explosion terminal box.
Further, the outer wall of described semi-hermetic reciprocating refrigeration compressor is also enclosed with cooling water cover.
Beneficial outcomes of the present utility model is, makes full use of the feature that condensation method is applicable to the high operating mode of ethylene concentration, absorption method is applicable to the low operating mode of ethylene concentration, gives full play to respective advantage, improves device operation efficiency; Under the effect prerequisite reaching ethene liquefaction, greatly save adsorption tanks size, reduce the loading level of sorbent material, improve the Recovery rate of ethylene of whole recovery system simultaneously, reduce exhaust emissions concentration.
Accompanying drawing explanation
Fig. 1 is the structural representation of ethylene recycle recovery system.
Embodiment
Below in conjunction with embodiment, the utility model is further described.
Ethylene recycle recovery system in Fig. 1 comprises refrigerator, container for storing liquid 6, adsorption tanks, vacuum pump 9, pneumavalve 10, gas-holder 11, housing 12, and refrigerator comprises and connects by plate-fin evaporator 1, semi-hermetic reciprocating refrigeration compressor 2, oil separator 3, water-cooled condenser 4, expansion valve 5 refrigerant circulation loop formed successively, plate-fin evaporator 1 is provided with refrigerant circulation entrance, refrigerant circulation outlet and inlet mouth, air outlet and liquid outlet, the refrigerant circulation outlet of plate-fin evaporator 1 is connected with semi-hermetic reciprocating refrigeration compressor 2, loop head is connected with expansion valve 5, realizes the recycle of refrigeration agent, the liquid outlet 'go'gage of plate-fin evaporator 1 is that the pipeline of DN50 is connected with container for storing liquid 6, enter, the bore of air outlet is DN200, inlet mouth collects for inputting the ethylene gas of coming, the top of adsorption tanks is provided with venting port, bottom is provided with air intake, the bore of venting port and air intake is DN200, be provided with intake valve at air intake place and resolve valve, adsorption tanks are connected by the air outlet of intake valve with plate-fin evaporator 1, be connected with vacuum pump 9 by resolving valve, vacuum pump 9 is by DN80 circulation pipeline and go out, the gas-holder 11 that inlet calibre is DN80 connects, gas-holder 11 connects the inlet mouth of plate-fin evaporator 1 by pneumavalve 10, vacuum pump 9 and pneumavalve 10 are electrically connected with housing 12.
In order to improve adsorption efficiency, adsorption tanks can be set to two or more, each adsorption tanks be provided with intake valve and resolve valve, adsorption tanks 7 and adsorption tanks 8 mode of connection is side by side given in Fig. 1, the intake valve of two adsorption tanks all connects the inlet mouth of plate-fin evaporator 1, resolve valve and all connect vacuum pump 9, adsorption tanks can be set up according to this mode of connection arranged side by side in actual production.
In order to adapt to the flammable properties of ethylene gas, semi-hermetic reciprocating refrigeration compressor 2 adopts special fire proof motor and anti-explosion terminal box; Can not cause in order to ensure compression process and fire, compressor outer wall is also enclosed with cooling water cover.
In refrigerator, in order to control the circulation throttling of refrigeration agent better, expansion valve 5 can adopt more accurate electric expansion valve.
The process of this ethylene recycle recovery system liquefied ethylene is as follows: collect the plate-fin evaporator 1 that the ethylene gas come enters refrigerator by the road, liquid is condensed into after being cooled to certain temperature by-120 DEG C of low-temperature refrigerants, and concentrate on base of evaporator, enter by pipeline the object that container for storing liquid 6 reaches recovery after confluxing; Open the intake valve of adsorption tanks 7, close the parsing valve of adsorption tanks 7, enter adsorption tanks 7 again from the air outlet air mixture containing a small amount of ethene out of plate-fin evaporator 1 to adsorb, adsorb saturated after, close the intake valve of adsorption tanks 7, open the parsing valve of adsorption tanks 7, simultaneously, open the intake valve of adsorption tanks 8, close the parsing valve of adsorption tanks 8, be switched to adsorption tanks 8 continuous adsorption, adsorption tanks 7 enter parse state, for one or more adsorption tanks, only need ensure that the intake valve corresponding to same adsorption tanks is not opened with parsing valve simultaneously; The enrichment ethylene gas parsed by vacuum pump 9 leads to gas-holder 11 by circulation pipeline, then the inlet mouth of the plate-fin evaporator 1 being connected to refrigerator by gas-holder 11 through circulation pneumavalve 10 carries out circulating cooling together with device portal waste gas; Housing 12 inside is provided with programmable logic controller PLC, is realized the synchronous start-stop of circulation pneumavalve and parsing vacuum pump by PLC.
Refrigerator can provide-120 DEG C of low temperature, in ethene liquefaction process, low-temperature refrigerant in plate-fin evaporator 1 and ethylene gas heat exchange, be cooled and refrigeration agent evaporation while efficient liquefaction at ethene, the steam produced enters in semi-hermetic reciprocating refrigeration compressor 2, after being compressed by semi-hermetic reciprocating refrigeration compressor 2, the refrigeration oil that refrigeration agent is taken out of from semi-hermetic reciprocating refrigeration compressor 2 is separated by oil separator 3 again, and refrigeration oil is sent back to compressor oil pocket to adapt to worst cold case, high-temperature high-pressure refrigerant gas through separating treatment cools through water-cooled condenser 4 pairs of refrigeration agents again, control finally by expansion valve 5 pairs of refrigeration agent throttlings and be transmitted back in plate-fin evaporator 1, achieve the circulation loop of refrigeration agent.
More than describe preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple equivalents to the technical solution of the utility model, these equivalents all belong to protection domain of the present utility model.
Claims (7)
1. an ethylene recycle recovery system, it is characterized in that, this system comprises: refrigerator, container for storing liquid (6), adsorption tanks, vacuum pump (9) and pneumavalve (10), and refrigerator comprises and connects by plate-fin evaporator (1), semi-hermetic reciprocating refrigeration compressor (2), oil separator (3), water-cooled condenser (4), expansion valve (5) refrigerant circulation loop formed successively; (1) is provided with inlet mouth, air outlet and liquid outlet to described plate-fin evaporator, and liquid outlet is connected with container for storing liquid (6); The bottom of described adsorption tanks is provided with air intake, air intake by intake valve with resolve valve and be connected with the air outlet of plate-fin evaporator (1) and described vacuum pump (9) respectively, described vacuum pump (9) connects the inlet mouth of described plate-fin evaporator (1) by pneumavalve (10).
2. ethylene recycle recovery system according to claim 1, is characterized in that, is also provided with gas-holder (11) between described vacuum pump (9) and described pneumavalve (10).
3. ethylene recycle recovery system according to claim 1 and 2, is characterized in that, this system also comprises housing (12), and described vacuum pump (9) is electrically connected with described housing (12) respectively with described pneumavalve (10).
4. ethylene recycle recovery system according to claim 1, it is characterized in that, described adsorption tanks are several, be connected, be connected respectively by respective parsing valve with described vacuum pump (9) respectively by the air outlet of respective intake valve with described plate-fin evaporator (1).
5. ethylene recycle recovery system according to claim 1, is characterized in that, described expansion valve (5) is electric expansion valve.
6. ethylene recycle recovery system according to claim 1, is characterized in that, described semi-hermetic reciprocating refrigeration compressor (2) adopts fire proof motor and anti-explosion terminal box.
7. according to the ethylene recycle recovery system in claim 4 to 6 described in any one, it is characterized in that, the outer wall of described semi-hermetic reciprocating refrigeration compressor (2) is also enclosed with cooling water cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344263.4U CN204727795U (en) | 2015-05-25 | 2015-05-25 | A kind of ethylene recycle recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344263.4U CN204727795U (en) | 2015-05-25 | 2015-05-25 | A kind of ethylene recycle recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN204727795U true CN204727795U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520344263.4U Active CN204727795U (en) | 2015-05-25 | 2015-05-25 | A kind of ethylene recycle recovery system |
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| Country | Link |
|---|---|
| CN (1) | CN204727795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387596A (en) * | 2017-08-02 | 2019-02-26 | 中国石油化工股份有限公司 | The small-sized evaluating apparatus of sulfur-resistant transformation catalyst and its application method |
-
2015
- 2015-05-25 CN CN201520344263.4U patent/CN204727795U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387596A (en) * | 2017-08-02 | 2019-02-26 | 中国石油化工股份有限公司 | The small-sized evaluating apparatus of sulfur-resistant transformation catalyst and its application method |
| CN109387596B (en) * | 2017-08-02 | 2022-04-08 | 中国石油化工股份有限公司 | Small-sized evaluation device for sulfur-tolerant shift catalyst and method of using the same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |