CN105062594B - The method for recycling the water and impurity of triethylene glycol removing natural gas carrying - Google Patents
The method for recycling the water and impurity of triethylene glycol removing natural gas carrying Download PDFInfo
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- CN105062594B CN105062594B CN201510430915.0A CN201510430915A CN105062594B CN 105062594 B CN105062594 B CN 105062594B CN 201510430915 A CN201510430915 A CN 201510430915A CN 105062594 B CN105062594 B CN 105062594B
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Abstract
The invention discloses the method for the water and impurity for recycling triethylene glycol removing natural gas carrying, step is：Natural gas moisture A is fed sequentially into knockout drum 1 by pipeline, and filter 2, hypergravity machine 3 is contacted with triethylene glycol cross-flow and purified, defeated outside natural gas；Impure triethylene glycol liquid in hypergravity machine sequentially inputs heat exchanger 4 by pipeline and exchanges heat, is flashed through flash tank 5, removes wherein larger particles solid impurity through coarse filter 6, enter the rectifying of triethylene glycol rectifier unit 8 after purpose ceramic-film filter 7 removes little particle Jiao colloid and condensate again, the buffered tank 9 of triethylene glycol obtained through rectifying buffers, heat exchange, input in hypergravity machine 3 and recycled.The method of the present invention can remove the water and impurity of natural gas carrying, and recycle triethylene glycol, reduce the pollution and consume of triethylene glycol, while it also avoid the potential safety hazard brought by triethylene glycol foaming, while decrease the corrosion and infringement to equipment.
Description
Technical field
The present invention relates to the natural gas purification field in petroleum chemical industry.
Background technology
A certain amount of moisture is typically all carried from the natural gas of underground mining, the water dew point value of natural gas all refers to higher than defined
Mark (less than 5~15 DEG C of environment temperature on the way).If carrying the natural gas of moisture in high pressure or low temperature, just have liquid phase water and coagulate
Knot.Liquid phase water has following harm to processing unit and gas transmission line：1. limiting natural gas flow velocity in pipeline, displacement is reduced；
2. with CO2、H2The mixing generation of the acidic components such as S has corrosive acid；3. with micro-molecular gas and mixture in high pressure or 0 degree
Solid hydrate of the generation outward appearance like ice above.Therefore, necessary dewatered clean handles extraction to each gas gathering station in gas field before transporting
Natural gas, the water content or water dew point value for making natural gas meet index request.
Due to triethylene glycol heat endurance is good and be easy to regeneration, steam force down carrying loss amount it is smaller, to phase homogenous quantities hundred
Can obtain bigger depoint depression for the absorbent solution of point concentration, thus each well station using triethylene glycol as dehydrating agent removing day
The moisture that right gas carries.In production, but various pollutants, corrosion product and the catabolite that natural gas carries can all be accumulated
In triethylene glycol. solution, cause entrainment when causing the reduction of triethylene glycol valid density, dewatering deteriorate, foam serious and cause
Triethylene glycol largely loses, and causes processed gas dew point value not up to standard.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, and propose one kind can strengthen significantly mass transfer,
Strengthen the side of the water that triethylene glycol removing natural gas carries of recycling on the basis of the supergravity reactor of microcosmic mixing and impurity
Method.
Technical scheme is summarized as follows：
Natural gas moisture A is pipelined to knockout drum 1, is provided with silk screen in knockout drum, isolates day
Gas after the most of drop being mingled with right air humidity gas is transported to filter 2, filters out the gas of solid impurity and fine droplet
Body input hypergravity machine 3 contacts with triethylene glycol cross-flow to be purified, and the natural gas after purification is by being outside B after the heat exchange of heat exchanger 10
It is defeated；Natural gas cross-flow with coming from filter 2 in hypergravity machine contact after impure triethylene glycol liquid by pipeline according to
Secondary input heat exchanger 4 exchanges heat, removing H is flashed through flash tank 52S and CO2(H2S and CO2Represented in Fig. 1 with C), through coarse filter 6
Wherein larger particles solid impurity is removed, then after purpose ceramic-film filter 7 removes little particle Jiao colloid and condensate to enter three sweet
The rectifying of alcohol rectifier unit 8, in the vapor D that rectifier unit 8 is isolated by draining into safety vent mouth at the top of rectifier unit, through rectifying
The buffered tank 9 of triethylene glycol that device rectifying obtains buffers, then with after the heat exchange of heat exchanger 10, being inputted in hypergravity machine 3, being entered by pump
Row recycles.
The method of the present invention can make triethylene glycol purified natural gas, and can will be after purified natural gas it is miscellaneous containing being corrosive
Repetitive cycling makes after triethylene glycol after matter, solid impurity and little particle Jiao colloid and condensate removes above-mentioned impurity and vapor
With avoiding the discharge of triethylene glycol, avoid to the pollution of the triethylene glycol of environment, reduce cost.
Hypergravity machine of the present invention is compared with tower equipment, high one to three orders of magnitude of volume transmission quality coefficient, if
Standby volume and weight is only a few percent of tower equipment.Liquid is in high dispersive, high turbulence, and strong mixing and interface are rapidly more
Inversely contacted in duct is bent with great relative velocity with gas under news, greatly enhance mass transport process.Pass
Matter cell height reduces 1~3 order of magnitude, huge tower (height more than twenty or thirty rice) is reduced to height only 2~3
The hypergravity machine of rice.The method of the present invention employs the high hypergravity machine of mass-transfer efficiency, can quickly, thoroughly remove natural air humidity
Water in gas.
In addition compared with traditional TEG Dehydration Processing, purpose ceramic-film filter is used in method of the invention, it can be with
Pollutant little particle Jiao colloid and condensate being accumulated in triethylene glycol. solution etc. is effectively removed, pending feed liquid is high in membrane tube
Speed flowing, the clarified permeation liquid containing small molecule component outwards passes through film along direction normal thereto under pressure-driven, containing macromolecular
The muddy concentrate of component is rejected by, so that fluid reaches separation, concentration, the purpose of purifying.The triethylene glycol of filtration, purification
Reuse after regeneration, reduces the pollution and consume of triethylene glycol, while it also avoid the potential safety hazard brought by triethylene glycol foaming, together
When decrease corrosion and infringement to equipment.
Brief description of the drawings
Fig. 1 is to recycle triethylene glycol to remove the water of natural gas carrying and the process chart of impurity.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
The application hypergravity machine is using Patent No.：95107423.7 extra gravity field device of cross current rotary bed, this is
In order that those skilled in the art better understood when the present invention, but the present invention is not imposed any restrictions, it is all disclosed
Hypergravity machine can be used in the present invention.
Natural gas moisture A is pipelined to knockout drum 1, is provided with silk screen in knockout drum, isolates day
Gas after the most of drop (hydrocarbon liquids) being mingled with right air humidity gas is transported to filter 2, filters out solid impurity and micro-
The gas input hypergravity machine 3 of droplet contacts with triethylene glycol cross-flow to be purified, and the natural gas after purification passes through heat exchanger 10
To be defeated outside B (qualified dry gas) after heat exchange；After natural gas cross-flow with coming from filter 2 in hypergravity machine contacts
Impure triethylene glycol liquid sequentially inputs heat exchanger 4 by pipeline and exchanged heat, through the flash distillation removing of flash tank 5 H2S and CO2(H2S and CO2
Represented with C, all discharged by flare system in Fig. 1), from the bottom of flash tank 5 discharge liquid through coarse filter 6 remove wherein compared with
Bulky grain solid impurity (diameter is more than 5 μm), then enter three after purpose ceramic-film filter 7 removes little particle Jiao colloid and condensate
(rectifier unit includes rectifying column, reboiler and condenser to the rectifying of glycol rectifier unit 8, and aqueous triethylene glycol is filled out by rectifying column
Material flows downwardly into reboiler, and hot triethylene glycol steam and the vapor contact for rising of gasifying in by reboiler, condensation triethylene glycol steam
Vapour and part water vapour), in the vapor D that rectifier unit 8 is isolated by draining into safety vent mouth (normal pressure) at the top of rectifier unit,
(reboiler top gas is condensed by quencher moiety and produces phegma so that is set up thermograde in the feeding port upper end of tower, is carried
High triethylene glycol regeneration effect).Through rectifier unit rectifying obtain the buffered tank 9 of triethylene glycol buffer, then with heat exchanger 10 exchange heat after
(being cooled to 55 DEG C), inputted in hypergravity machine 3, recycled by pump.
Hypergravity machine of the present invention is compared with tower equipment, high one to three orders of magnitude of volume transmission quality coefficient, if
Standby volume and weight is only a few percent of tower equipment.Liquid is in high dispersive, high turbulence, and strong mixing and interface are rapidly more
Inversely contacted in duct is bent with great relative velocity with gas under news, greatly enhance mass transport process.Pass
Matter cell height reduces 1~3 order of magnitude, huge tower (height more than twenty or thirty rice) is reduced to height only 2~3
The hypergravity machine of rice.The method of the present invention employs the high hypergravity machine of mass-transfer efficiency, can quickly, thoroughly remove natural air humidity
Water in gas.
In addition compared with traditional TEG Dehydration Processing, purpose ceramic-film filter is used in method of the invention, it can be with
Pollutant little particle Jiao colloid and condensate being accumulated in triethylene glycol. solution etc. is effectively removed, pending feed liquid is high in membrane tube
Speed flowing, the clarified permeation liquid containing small molecule component outwards passes through film along direction normal thereto under pressure-driven, containing macromolecular
The muddy concentrate of component is rejected by, so that fluid reaches separation, concentration, the purpose of purifying.The triethylene glycol of filtration, purification
Reuse after regeneration, reduces the pollution and consume of triethylene glycol, while it also avoid the potential safety hazard brought by triethylene glycol foaming, together
When decrease corrosion and infringement to equipment.
Claims (1)
1. the method for the water and impurity of triethylene glycol removing natural gas carrying is recycled, it is characterized in that comprising the following steps：Naturally
Air humidity gas A is pipelined to knockout drum (1), isolates the gas after the most of drop being mingled with natural gas moisture
Filter (2) is transported to, the gas input hypergravity machine (3) for filtering out solid impurity and fine droplet contacts with triethylene glycol cross-flow
Purified, the natural gas after purification exchanged heat by heat exchanger (10) after to be defeated outside B；With coming from filter in hypergravity machine
(2) the impure triethylene glycol liquid after natural gas cross-flow contact sequentially inputs heat exchanger (4) by pipeline and exchanged heat, through flash tank
(5) flash distillation removes H2S and CO2(C), wherein larger particles solid impurity, then through purpose ceramic-film filter (7) is removed through coarse filter (6)
Enter triethylene glycol rectifier unit (8) rectifying after removing little particle Jiao colloid and condensate, steamed in the water that rectifier unit (8) is isolated
By draining into safety vent mouth at the top of rectifier unit, the buffered tank of triethylene glycol (9) obtained through rectifier unit rectifying buffers gas (D),
After being exchanged heat again with heat exchanger (10), inputted in hypergravity machine (3), recycled by pump.
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| CN201510430915.0A CN105062594B (en) | 2015-07-21 | 2015-07-21 | The method for recycling the water and impurity of triethylene glycol removing natural gas carrying |
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| CN201510430915.0A CN105062594B (en) | 2015-07-21 | 2015-07-21 | The method for recycling the water and impurity of triethylene glycol removing natural gas carrying |
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| CN105062594A CN105062594A (en) | 2015-11-18 |
| CN105062594B true CN105062594B (en) | 2017-11-24 |
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| CN114797265B (en) * | 2022-05-20 | 2024-02-09 | 中国海洋石油集团有限公司 | Filtration and purification system for recycling ethylene glycol |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194854A (en) * | 2014-09-23 | 2014-12-10 | 北京化工大学 | Hypergravity-process triglycol natural gas dehydration system and process using system |
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| KR101333966B1 (en) * | 2011-11-30 | 2013-11-27 | 오씨아이 주식회사 | High efficiency recycling method and system for sawing liquid in waste sludge formed by semiconductor and solar cell wafer using membrane process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194854A (en) * | 2014-09-23 | 2014-12-10 | 北京化工大学 | Hypergravity-process triglycol natural gas dehydration system and process using system |
Non-Patent Citations (1)
| Title |
|---|
| 三甘醇脱水工艺探讨;郝蕴;《中国海上油气（工程）》;20010630;第13卷(第3期);22-29 * |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: CNOOC (TIANJIN) PIPELINE ENGINEERING TECHNOLOGY CO., LTD. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC Energy Development Co., Ltd. Patentee before: China National Offshore Oil Corporation Co-patentee before: CNOOC (TIANJIN) PIPELINE ENGINEERING TECHNOLOGY CO., LTD. |
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