CN1542319A - Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure - Google Patents
Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure Download PDFInfo
- Publication number
- CN1542319A CN1542319A CNA2003101062191A CN200310106219A CN1542319A CN 1542319 A CN1542319 A CN 1542319A CN A2003101062191 A CNA2003101062191 A CN A2003101062191A CN 200310106219 A CN200310106219 A CN 200310106219A CN 1542319 A CN1542319 A CN 1542319A
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- Prior art keywords
- liquid phase
- storage tank
- ethene
- ethylene
- phase ethylene
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000005977 Ethylene Substances 0.000 title claims abstract description 59
- 239000007791 liquid phase Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000012071 phase Substances 0.000 claims description 30
- 238000005057 refrigeration Methods 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 230000001914 calming effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000009834 vaporization Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The present invention relates to one kind of liquid phase ethylene storing method at normal and medium pressure. Normal pressure liquid phase ethylene storage tank and medium pressure liquid phase ethylene storage tank are used simultaneously. During storing, gasified ethylene from the normal pressure liquid phase ethylene storage tank is pressure raised in a gasified ethylene pressure raising system and condensed in a medium pressure gaseous ethylene condensing system cooled with common refrigerating system, the obtained liquid phase ethylene is stored in the medium pressure liquid phase ethylene storage tank, and liquid phase ethylene in the medium pressure liquid phase ethylene storage tank is pumped to raise pressure before being used in the next step. The method of the present invention has great tank capacity, low power consumption and low cost.
Description
Technical field
The present invention relates to a kind of process for storing liquid phase ethylene of normal and medium pressure associating.
Background technique
Ethene is a kind of important chemical material.Two kinds of popular process for storing liquid phase ethylene are arranged at present.A kind of is the normal pressure storage means, is about to liquid phase ethylene and is stored in the atmospheric storage tank.Because the ethene liquid level raises and storage tank absorption heat in the storage tank, causes the liquid phase ethylene vaporization.Therefore, when adopting normal pressure to store liquid phase ethylene, also need to dispose gaseous ethene booster system, gaseous ethene condensation and flash system, propylene refrigeration system.Like this, the ethene of these vaporizations could return in the normal pressure liquid phase ethylene storage tank once more, realizes that the normal pressure of liquid phase ethylene stores.It is big that the advantage of this method is that the separate unit jar holds, and help optimizing and use cold, but it is higher to plant storage means supporting vapor condensation system price costliness and energy consumption therewith.Another kind method is middle pressure storing method, presses in the storage tank during promptly liquid phase ethylene is stored in.The gaseous ethene that is produced in storage tank by calm the anger in the configuration phase ethene condenser system, common refrigeration system, returns in the middle hydraulic fluid phase ethene storage tank ethene of these vaporizations, realizes that the middle pressure of liquid phase ethylene stores.The advantage of this method phase condenser system price of calming the anger in being is lower, and the phase specific energy consumption is also lower.It is little that but this method separate unit jar holds, and is unfavorable for optimizing the use cold.
Summary of the invention
The objective of the invention is to, a kind of process for storing liquid phase ethylene of normal and medium pressure associating is provided.Tank capacity is big, equipment investment reduction and energy efficient.
Realize the technological scheme of the object of the invention: a kind of process for storing liquid phase ethylene of normal and medium pressure associating, this method is used normal pressure liquid phase ethylene storage tank and middle hydraulic fluid ethene storage tank mutually simultaneously, the gaseous ethene that is vaporized in the normal pressure liquid phase ethylene storage tank, after the gaseous ethene booster system is boosted, send into by the phase ethene condenser system condensation of calming the anger in the common refrigeration system refrigeration, store in the hydraulic fluid phase ethene storage tank during the gained Ethylene Liquid is delivered to, the liquid phase ethylene in this storage tank boosts through pump and sends into bottom operation use.
Above-mentioned storage means, the operating temperature of described normal pressure liquid phase ethylene storage tank are-108.5 ℃～-90 ℃, and operation pressure is 80KPa～210KPa.
Above-mentioned storage means, the operating temperature of described middle hydraulic fluid phase ethene storage tank is-80 ℃～0 ℃, operation pressure is 340KPa～4200KPa.
Common refrigeration system in the above-mentioned storage means is meant uses general refrigerant, for example: the refrigeration system in liquefied ammonia, fluorine Lyons etc.
Technique effect of the present invention: after adopting technological scheme of the present invention, the ethene that in normal pressure liquid phase ethylene storage tank, is vaporized, deliver to temperature and pressure be relatively higher than normal pressure liquid phase ethylene storage tank in the phase ethene condenser system condensation of calming the anger, used refrigerant temperature is higher, so do not need the flash system of normal pressure storing method, just can make the gaseous ethene condensation, therefore, energy consumption is lower than the normal pressure storing method.In addition, in calm the anger the phase condenser system can be with the common refrigeration system of low-cost refrigeration agent, and the cost of the employed propylene refrigeration of normal pressure storing method system is very expensive, therefore, has saved equipment investment.The inventive method has not only kept the big advantage of original normal pressure storing method list tankage size, and Pei Zhi middle hydraulic fluid phase ethene storage tank also has the function that stores liquid phase ethylene simultaneously.
Description of drawings
Fig. 1 is the principle process schematic representation of the process for storing liquid phase ethylene of normal and medium pressure associating provided by the invention, each digital implication among the figure: 1, normal pressure liquid phase ethylene storage tank; 2, gaseous ethene booster system; 3, the phase of calming the anger in ethene condenser system; 4, middle hydraulic fluid phase ethene storage tank; 5 and 6, pump; 7, common refrigeration system; 22, flare system, all the other numerals all representatives flow away to pipeline, be graphic simplicity, equipment component, instrument, pipeline do not show in the drawings.
Embodiment
Embodiment below in conjunction with accompanying drawing provides is further described in detail storage means provided by the present invention, but does not therefore limit the present invention.
As shown in Figure 1, a kind of process for storing liquid phase ethylene of normal and medium pressure associating, use normal pressure liquid phase ethylene storage tank 1 and middle hydraulic fluid ethene storage tank 4 mutually simultaneously, when the storage liquid phase ethylene, the gaseous ethene that is vaporized in the normal pressure liquid phase ethylene storage tank 1, after gaseous ethene booster system 2 is boosted, send into by phase ethene condenser system 3 condensations of calming the anger in common refrigeration system 7 refrigeration, store in the hydraulic fluid phase ethene storage tank 4 during the gained Ethylene Liquid is delivered to, the liquid phase ethylene in this storage tank 4 boosts through pump 6 and sends into bottom operation use.
Storage means of the present invention, the operating temperature of described normal pressure liquid phase ethylene storage tank 1 are-108.5 ℃～-90 ℃, and operation pressure is 80KPa～210KPa.The operating temperature of hydraulic fluid phase ethene storage tank is-80 ℃～0 ℃ in described, and operation pressure is 340KPa～4200KPa.
Narrate storage means of the present invention by principle process shown in Figure 1:
By the next liquid phase ethylene in outside, in sending into normal pressure liquid phase ethylene storage tank 1, pipeline 9 stores, because liquid level rises and heat absorption in the storage tank 1, the small part liquid phase ethylene is vaporized, after pipeline 10 is sent into the ethene of vaporization gaseous ethene booster system 2 and is boosted, 3 condensations of the phase ethene of calming the anger in pipeline 13,14 is sent into condenser system, the ethene of condensation hydraulic fluid phase ethene storage tank 4 in pipeline 18 is sent into stores.In hydraulic fluid phase ethene storage tank 4 cause that because of heat absorption and liquid level raise liquid phase ethylene vaporizes, ethene phase ethene condenser system 3 condensations of calming the anger in pipeline 17,15,14 is also sent into of vaporization, condensed liquid ethylene are storage in the hydraulic fluid phase ethene storage tank 4 through pipeline 18 turns back in.In the phase ethene condenser system 3 needed colds of calming the anger provide through pipeline 23,24 by common refrigeration system 7.The refrigeration agent that refrigeration system 7 is adopted is a liquefied ammonia, also can be fluorine Lyons.
For preventing normal pressure liquid phase ethylene storage tank 1 and middle hydraulic fluid ethene storage tank 4 internal pressure superelevation mutually, under the invalid situation of normal regulating, gaseous ethene can be respectively be discharged into flare system 22 by pressure relief parts through pipeline 11,12 or pipeline 17,16,12 and burns.
During ethene in using storage device of the present invention, the liquid ethylene in the normal pressure liquid phase ethylene storage tank 1 by pipeline 8, after pump 5 boosts, can be delivered to bottom operation use with pipeline 21.Liquid ethylene in the middle hydraulic fluid phase ethene storage tank 4 can be boosted after pipeline 20 is delivered to bottom operation use by pipeline 19 usefulness pumps 6.
When the bottom operation need be used gaseous ethene, also the gaseous ethene that vaporization in middle hydraulic fluid phase ethene storage tank 4 and the normal pressure liquid phase ethylene storage tank 1 can be generated was directly delivered to bottom operation use through pipeline 25.
Related normal pressure liquid phase ethylene storage tank 1 in the technological scheme provided by the invention, gaseous ethene booster system 2, middle hydraulic fluid phase ethene storage tank 4, in the calm the anger structure of phase ethene condenser system 3, common refrigeration system 7 and other supplementary equipment, all can consult and use the same category of device and the system of existing normal pressure storing method and middle pressure storing method.
According to technological scheme provided by the invention, design and construction 8000m
3Normal pressure liquid phase ethylene storage tank is built a 1500m simultaneously
3Middle hydraulic fluid phase ethene storage tank, invest 4,800 ten thousand yuan altogether, in calm the anger phase ethene condenser system and liquefied ammonia refrigeration system invest 5,900,000 yuan.Gaseous ethene boosts, the normal electric power of liquefied ammonia refrigeration system is 380kw.And employing normal pressure storage means, design and construction 8000m
3The investment of normal pressure liquid phase ethylene storage tank is 1.1 hundred million yuan, and wherein the investment of normal pressure liquid phase ethylene jar is 4,500 ten thousand yuan, and the gaseous ethene condenser system is invested 2,300 ten thousand yuan.The normal electric power 440kw of gaseous ethene booster system, gaseous ethene condensation and flash system, propylene refrigeration system.This shows the benefit that technological scheme of the present invention has tangible saving investment and cuts down the consumption of energy.
Claims (3)
1, a kind of process for storing liquid phase ethylene of normal and medium pressure associating, it is characterized in that: use normal pressure liquid phase ethylene storage tank (1) and middle hydraulic fluid ethene storage tank (4) mutually simultaneously, when the storage liquid phase ethylene, the gaseous ethene that is vaporized in the normal pressure liquid phase ethylene storage tank (1), after gaseous ethene booster system (2) is boosted, send into by phase ethene condenser system (3) condensation of calming the anger in common refrigeration system (7) refrigeration, store in the hydraulic fluid phase ethene storage tank (4) during the gained Ethylene Liquid is delivered to, the liquid phase ethylene in this storage tank (4) boosts through pump (6) and sends into bottom operation use.
2, storage means according to claim 1 is characterized in that: the operating temperature of described normal pressure liquid phase ethylene storage tank (1) is-108.5 ℃～-90 ℃, and operation pressure is 80KPa～210KPa.
3, storage means according to claim 1 is characterized in that: the operating temperature of hydraulic fluid phase ethene storage tank is-80 ℃～0 ℃ in described, and operation pressure is 340KPa～4200KPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106219 CN1247930C (en) | 2003-11-04 | 2003-11-04 | Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106219 CN1247930C (en) | 2003-11-04 | 2003-11-04 | Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1542319A true CN1542319A (en) | 2004-11-03 |
| CN1247930C CN1247930C (en) | 2006-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106219 Expired - Lifetime CN1247930C (en) | 2003-11-04 | 2003-11-04 | Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429452C (en) * | 2005-11-03 | 2008-10-29 | 常州东昊科技开发有限公司 | Process for storing liquid phase ethylene at combined ordinary pressure and medium pressure |
| CN102213361A (en) * | 2011-05-30 | 2011-10-12 | 中国寰球工程公司 | Liquid ethylene storage tank, liquid ethylene storage and gasification system and liquid ethylene gasification method |
| CN102705709A (en) * | 2012-07-03 | 2012-10-03 | 宿州中粮生物化学有限公司 | Unloading structure of low temperature ethylene tank vehicle |
| 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 |
| CN113266759A (en) * | 2021-05-11 | 2021-08-17 | 中国空分工程有限公司 | Ethylene combined storage system and method |
-
2003
- 2003-11-04 CN CN 200310106219 patent/CN1247930C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429452C (en) * | 2005-11-03 | 2008-10-29 | 常州东昊科技开发有限公司 | Process for storing liquid phase ethylene at combined ordinary pressure and medium pressure |
| CN102213361A (en) * | 2011-05-30 | 2011-10-12 | 中国寰球工程公司 | Liquid ethylene storage tank, liquid ethylene storage and gasification system and liquid ethylene gasification method |
| CN102213361B (en) * | 2011-05-30 | 2012-11-14 | 中国寰球工程公司 | Liquid ethylene storage tank, liquid ethylene storage and gasification system and liquid ethylene gasification method |
| CN102705709A (en) * | 2012-07-03 | 2012-10-03 | 宿州中粮生物化学有限公司 | Unloading structure of low temperature ethylene tank vehicle |
| 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 |
| 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 |
| CN113266759A (en) * | 2021-05-11 | 2021-08-17 | 中国空分工程有限公司 | Ethylene combined storage system and method |
| CN113266759B (en) * | 2021-05-11 | 2022-06-03 | 中国空分工程有限公司 | Ethylene combined storage system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1247930C (en) | 2006-03-29 |
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Effective date of registration: 20160427 Address after: 213100, Longjiang North Road, Xinbei Town, Xinbei District, Jiangsu, Changzhou 1569 Patentee after: MACAU NEW SOLAR Co.,Ltd. Address before: 213022 No. 6 Tianshan Road, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU DONGHAO SCIENCE & TE |
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Granted publication date: 20060329 |
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