CN201810982U - Gas recovery device for low temperature ethylene spherical tank - Google Patents
Gas recovery device for low temperature ethylene spherical tank Download PDFInfo
- Publication number
- CN201810982U CN201810982U CN2010205170951U CN201020517095U CN201810982U CN 201810982 U CN201810982 U CN 201810982U CN 2010205170951 U CN2010205170951 U CN 2010205170951U CN 201020517095 U CN201020517095 U CN 201020517095U CN 201810982 U CN201810982 U CN 201810982U
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- condenser
- spherical tank
- low temperature
- refrigeration system
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Abstract
The utility model relates to a gas recovery device for a low temperature ethylene spherical tank, which comprises a condenser and a refrigeration system, wherein the condenser is arranged outside the spherical tank; the refrigeration system is used for providing a cooling medium to the condenser; and the condenser is connected with the spherical tank through a pipe. The utility model is characterized in that the refrigeration system uses propylene as the cooling medium; the condenser is arranged above the spherical tank; the inlet of the condenser is connected with the gas outlet of the spherical tank; and the outlet of the condenser is connected with the liquid reflux inlet of the spherical tank. Compared with the prior art, since the utility model uses propylene as the cooling medium and arranges the condenser above the spherical tank, gasified ethylene can naturally ascend under the action of buoyancy, and the condensed liquid ethylene can automatically flow back into the spherical tank under the action of gravity. Meanwhile, by using propylene as the refrigerant, the gas recovery device in the utility model has the advantages of thorough condensation and environment friendliness.
Description
Technical field
The utility model relates to the ethene storage art, specifically refers to a kind of low temperature ethylene spherical tank gas concentration unit.
Background technique
Present domestic ethylene project is more and more, and polytechnic ethylene units such as naphtha system ethene, rock gas system ethene, coal system ethene and residual oil system ethene continue to bring out, and make the storage of ethene become more and more important.The storage of ethene at present is mainly dual mode, and first kind is that storage is pressed in low temperate zone, promptly adopts half freezing-type, uses Spherical tank Storage, and storage temperature is about-35 ℃, the about 2.1MPaG of design pressure; Second kind is to adopt low-temperature atmosphere-pressure to store, and promptly selects the double-walled low temperature spherical tank for use, and storage temperature is-104 ℃, and design pressure is a micro positive pressure.These two kinds of storing modes have his own strong points, and first kind of Spherical tank Storage mode particularly is because flexible operation, operating cost is cheap relatively, more and more be widely adopted, the present invention just is meant when adopting first kind of storing mode, the recycling system of ethylene gas.
Because the storage temperature of liquid ethylene is lower than ambient temperature in the spherical tank.Low temperature ethylene owing to the difference of inside and outside environment temperature, has a spot of liquid ethylene and conducts heat and the cold damage that gasifies with extraneous the generation in storage process.Though the ethene of a small amount of gasification gasification back absorbs heat, but the storage temperature in guaranteeing jar, but because constantly the importing into of external heat, the ethene of this part gasification can get more and more, and causes the progressively rising of spherical tank internal pressure.Therefore, normally the ethene that gasifies in the spherical tank is sent to ethylene unit at present, to reach control to spherical tank pressure.But when ethylene unit is stopped work or during maintenance, the ethene of this part gasification can only enter that torch is burnt or directly enter atmosphere, causes the pollution of atmosphere and the loss of valuable ethylene product.
For the processing of this part gasification ethene, the reclaiming system that the past adopts has problems such as the gaseous ethene condensation is incomplete, the not environmental protection of use freon refrigerant.
Summary of the invention
Technical problem to be solved in the utility model is that the present situation at prior art provides and can and use the low temperature ethylene spherical tank gas concentration unit of environmental protection with gasification ethene total condensation, with the purpose that realizes that cold damage ethylene recycle is utilized.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this low temperature ethylene spherical tank gas concentration unit comprises being arranged on the outer condenser of spherical tank and providing the refrigeration system of refrigerant to described condenser that described condenser connects spherical tank by pipeline; It is characterized in that described refrigeration system adopts propylene as refrigerant; Described condenser is arranged on the top of described spherical tank, and the inlet of condenser connects the gas outlet of described spherical tank, and the outlet of condenser connects the liquid return mouth on the described spherical tank.
Described refrigeration system can comprise compressor, separator, water cooled condenser, knock out drum and the economizer that is connected successively, and described compressor connects the refrigerant exit of described condenser, and described economizer connects the refrigerant inlet of described condenser.
Preferably, above-mentioned condenser can adopt the pot type condenser.
Compared with prior art, the utility model adopts propylene as refrigerant, and condenser is arranged on the top of spherical tank, and the ethene of gasification can rise naturally, and condensed liquid ethylene can be back in the spherical tank under the effect of gravity automatically; Simultaneously the utility model adopts propylene as refrigeration agent, and condensation is more thorough, use more environmental protection.Refrigerant system configurations is simple, heat exchange efficiency is high, and condensation effect is good.
Description of drawings
Fig. 1 is the utility model embodiment's a floor map.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, this low temperature ethylene spherical tank gas recovery system comprises:
Pot type condenser 2 is arranged on the top of spherical tank 1, and the inlet of condenser connects the gas outlet of spherical tank, and the outlet of condenser connects the liquid return mouth on the described spherical tank.
Refrigeration system comprises the compressor 3, oil separator 4, water cooled condenser 5, knock out drum 6 and the economizer 7 that connect successively; Compressor 3 connects the refrigerant exit of condenser, and economizer connects the refrigerant inlet of condenser.This refrigeration system adopts propylene as refrigerant.
Its working procedure is as follows:
Ethene after the gasification of absorbing environmental heat comes out from the gas outlet at spherical tank 1 top, enters condenser 2, and after propylene heat exchange condensation, the liquid return mouth on spherical tank flows back in the spherical tank 1 automatically.
Become gas phase after propylene and the ethene heat exchange and enter compressor 3, after the pressurization, enter oil separator 4, the lubricating oil separation in the gas-phase propene is come out, lubricant oil returns compressor 3 through lube oil cooler 8 after the cooling.Be advanced into water cooled condenser 5 before gas-phase propene continues and be condensed into liquid, arrive economizer 7 by knock out drum 6 backs, cold excessively in economizer 7, cross the refrigeration agent reduction valve 9 again after cold, after the decompression cooling, become liquid, flow in the condenser 2 that is arranged on the spherical tank top, with the gaseous ethene heat exchange, go round and begin again once more, with the gaseous ethene condensation.The lubricant oil of separating from oil separator 4 returns the suction port of compressor and recycles after water cooling.
Claims (3)
1. low temperature ethylene spherical tank gas concentration unit comprises being arranged on the outer condenser of spherical tank and providing the refrigeration system of refrigerant to described condenser that described condenser connects spherical tank by pipeline; It is characterized in that described refrigeration system adopts propylene as refrigerant; Described condenser is arranged on the top of described spherical tank, and the inlet of condenser connects the gas outlet of described spherical tank, and the outlet of condenser connects the liquid return mouth on the described spherical tank.
2. low temperature ethylene spherical tank gas concentration unit according to claim 1, it is characterized in that described refrigeration system comprises compressor, separator, water cooled condenser, knock out drum and the economizer that is connected successively, described compressor connects the refrigerant exit of described condenser, and described economizer connects the refrigerant inlet of described condenser.
3. low temperature ethylene spherical tank gas concentration unit according to claim 1 and 2 is characterized in that described condenser is the pot type condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205170951U CN201810982U (en) | 2010-08-31 | 2010-08-31 | Gas recovery device for low temperature ethylene spherical tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205170951U CN201810982U (en) | 2010-08-31 | 2010-08-31 | Gas recovery device for low temperature ethylene spherical tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810982U true CN201810982U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205170951U Expired - Lifetime CN201810982U (en) | 2010-08-31 | 2010-08-31 | Gas recovery device for low temperature ethylene spherical tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810982U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994326A (en) * | 2014-05-05 | 2014-08-20 | 中国寰球工程公司 | Energy-saving type low-temperature ethylene gasification process system adopting economizer and recondenser |
| CN103994325A (en) * | 2014-05-05 | 2014-08-20 | 中国寰球工程公司 | Gas-liquid phase shunt recycling energy-saving type low-temperature liquid ethylene gasification process system |
| CN105179934A (en) * | 2015-09-16 | 2015-12-23 | 神华集团有限责任公司 | Real gas replacement method and device for propylene spherical tanks |
| CN105270772A (en) * | 2014-07-07 | 2016-01-27 | 中石化洛阳工程有限公司 | Ethylene spherical tank cooling depressurizing method |
| CN112295521A (en) * | 2020-10-28 | 2021-02-02 | 新疆圣雄氯碱有限公司 | Method and device for reducing self-polymerization of vinyl chloride monomer in tank |
-
2010
- 2010-08-31 CN CN2010205170951U patent/CN201810982U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994326A (en) * | 2014-05-05 | 2014-08-20 | 中国寰球工程公司 | Energy-saving type low-temperature ethylene gasification process system adopting economizer and recondenser |
| CN103994325A (en) * | 2014-05-05 | 2014-08-20 | 中国寰球工程公司 | Gas-liquid phase shunt recycling energy-saving type low-temperature liquid ethylene gasification process system |
| CN103994325B (en) * | 2014-05-05 | 2016-06-01 | 中国寰球工程公司 | Gas-liquid shunts the energy-saving low-temperature liquid ethylene gasifying process system of recovery mutually |
| CN103994326B (en) * | 2014-05-05 | 2016-06-01 | 中国寰球工程公司 | Adopt the energy-saving low-temperature ethylene gas metallization processes system of the condenser of economizer/again |
| CN105270772A (en) * | 2014-07-07 | 2016-01-27 | 中石化洛阳工程有限公司 | Ethylene spherical tank cooling depressurizing method |
| CN105179934A (en) * | 2015-09-16 | 2015-12-23 | 神华集团有限责任公司 | Real gas replacement method and device for propylene spherical tanks |
| CN112295521A (en) * | 2020-10-28 | 2021-02-02 | 新疆圣雄氯碱有限公司 | Method and device for reducing self-polymerization of vinyl chloride monomer in tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: Sinopec Corp. Patentee after: SINOPEC Ningbo Engineering Company Limited Patentee after: SINOPEC Ningbo Technology Research Institute Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: Sinopec Corp. Patentee before: Sinopec Ningbo Engineering Co., Ltd. Patentee before: Sinopec Ningbo Institute of Technology |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |