Integrated TEG (triethylene glycol) dehydration integrated process device and method

A process device and rich liquid technology, which is applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve the problems of low degree of device integration, complicated process flow, difficult to skid and relocate, and reduce the one-time investment and operating costs, simple process, and easy relocation

Pending Publication Date: 2018-12-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] ③The traditional waste liquid recovery process is carried out by gravity, and

Method used

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  • Integrated TEG (triethylene glycol) dehydration integrated process device and method

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Embodiment Construction

[0025] An integrated TEG dehydration integrated process device, such as figure 1 As shown, it includes: feed gas filter separator 1, TEG absorption tower 2, dry gas / lean liquid heat exchanger 3, flash tank 4, TEG solution filter 5, TEG circulation pump 6, lean / rich liquid heat exchanger 7. Rich liquid heat exchange coil 8, rich liquid rectification column 9, fire tube reboiler 10, lean liquid rectification column 11, lean liquid buffer tank 12, TEG replenishment tank 13, TEG replenishment pump 14, product gas Pressure regulating valve 15, fuel gas supplementary gas pipeline regulating valve 16, flash gas pipeline pressure / temperature cascade control regulating valve 17, flash tank liquid level regulating valve 18, waste gas liquid separation tank 19, etc., among which:

[0026] TEG absorption tower 2 inlet is connected to feed gas filter separator 1, TEG absorption tower 2 top gas phase outlet is connected to dry gas / lean liquid heat exchanger 3 tube side, TEG absorption tower...

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Abstract

The invention discloses an integrated TEG (triethylene glycol) dehydration integrated process device and method. The device comprises a feed gas filtration separator, a TEG (triethylene glycol) absorption tower and a dry gas/barren solution heat exchanger; a liquid phase outlet at the bottom of the TEG (triethylene glycol) absorption tower is connected to a TEG (triethylene glycol) circulating pump; a pregnant solution outlet of the TEG (triethylene glycol) circulating pump is sequentially connected to a pregnant solution heat exchange coil, a flash tank, a TEG (triethylene glycol) solution filter and a barren/pregnant solution heat exchanger, a barren solution buffer tank and a pregnant solution rectifying column; a flashing steam outlet of the flash tank is connected to a TEG (triethylene glycol) fire tube type reboiler; the pregnant solution rectifying column, the fire tube type reboiler, a barren solution rectifying column and the barren solution buffer tank are connected together;and an outlet of the barren solution buffer tank, the barren/pregnant solution heat exchanger, the TEG (triethylene glycol) circulating pump, a dry gas/barren solution heat exchanger shell pass and aliquid phase inlet at the tower top of the TEG (triethylene glycol) absorption tower are sequentially connected. According to the integrated TEG (triethylene glycol) dehydration integrated process device and method, the process is simpler, highly integrated design is better facilitated, moving is easy, in addition, energy conservation and emission reduction are realized to a great extent, the operation cost is lowered, and the one-time investment is reduced.

Description

technical field [0001] The invention relates to a novel, high-efficiency and energy-saving integrated TEG dehydration integration process, which belongs to the technical field of dehydration processes in the fields of natural gas treatment plants, natural gas single well test production, shale gas dehydration stations and the like. Background technique [0002] TEG dehydration is based on the principle of absorption, using a hydrophilic liquid in countercurrent contact with natural gas to remove water vapor in the gas. For glycol dehydration, due to the large dew point drop, low cost and reliable operation of triethylene glycol dehydration, its economic benefits are the best among various glycol compounds. Therefore, it is widely used abroad. When both dehydration with triethylene glycol and solid adsorbent dehydration can meet the dew point drop requirements, the economic benefit of dehydration with triethylene glycol is better. Compared with adsorption dehydration, glyco...

Claims

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Application Information

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IPC IPC(8): C10L3/10B01D53/14B01D53/18
CPCB01D53/1425B01D53/145B01D53/1493B01D53/18B01D2252/202B01D2256/245B01D2257/80C10L3/10C10L3/106
Inventor 刘改焕洪进门肖秋涛程林刘慧敏陈运强周英祁亚玲汤晓勇陈韶华魏云曹文浩林利李超群陈彰兵何珺刘健周明宇曹旭原汤智昀马先
Owner BC P INC CHINA NAT PETROLEUM CORP
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