Dehydration Skid

(1)150-300×104 m3/d TEG dehydration plant for CNPC

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Our company constructed Wei 202 and 204 TEG dehydration plant with treatment capacity of 300×104 m3/d and Ning 201 TEG dehydration plant project with treatment capacity of 150 ×104 m3/d.

TEG dehydration plant process is typically used to treat wellhead sulfur-free natural gas or purified gas from alcohol amine process desulfurization plant. TEG dehydration unit is mainly composed of absorption system and regeneration system. The core equipment of the process is absorption tower. The dehydration process of natural gas is completed in the absorption tower, and the regeneration tower completes the regeneration of TEG rich liquid.

The feed natural gas enters from the bottom of the absorption tower, and countercurrently contact the TEG lean liquid which entering from the top into tower, then the dehydrated natural gas leaves from the top of the absorption tower, and the TEG rich liquid is discharged from the bottom of the tower.

Afterwards, the TEG rich liquid enters into the flash tank to flash out the dissolved hydrocarbon gases as possible as it can ,after being heated up through the discharge pipe of the condenser at the top of the regeneration tower. The liquid phase leaving the flash tank flows into the lean-rich liquid heat exchanger and buffer tank after being filtered by the filter, and then enters the regeneration tower after being further heated.

In the regeneration tower, the water in the TEG rich liquid is removed though being heated under low pressure and high temperature. The regenerated TEG lean liquid is cooled by the lean-rich liquid heat exchanger and pumped into the top of the absorption tower by the glycol pump for recycling.

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(2) 30×104 m3/d molecular sieve dehydration plant for CNPC

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Treatment capacity :14 ~ 29 × 10 m3/d
Working pressure: 3.25 ~ 3.65mpa (g)
Inlet temperature: 15 ~ 30℃
Water content of feed gas: 15-30°C saturated water
Design pressure: 4MPa

The feed gas of this project is the natural gas with high CO2 content from Lian 21 block and Lian 4 block in Fushan oilfield, Hainan province. In the early and middle stage of the pilot test, the produced gas from the two blocks was firstly made oil-gas separation in Bailian gas gathering station, next it was dried and dehydrated by molecular sieve dehydration skid, and then was pressurized to 14 to 22 MPa by gas injection compressor and injected into the ground.

(3)13.8million TEG dehydration unit

Project: Tongluoxia Gas Storage Construction Project

EP contractor: Tianjin Branch of China National Petroleum Pipeline Engineering Co., Ltd

TEG dehydration unit:

Processing capacity 13.8 million cubic meters/day

Design pressure/design temperature: 10MPa/55 ℃

Working conditions: 3.6~7.0MPa/15~34 ℃

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(4)400,000Nm3/d TEG dehydration unit

Project Name: Surface Engineering for Single Well Trial Production of Ross 2 Well

Project location: Pishan County, Hotan Prefecture, Xinjiang Uygur Autonomous Region

Construction scale: The gas processing capacity is 400000m3/d.

The overall skid mounted natural gas TEG dehydration unit,

The dehydration of this project is used to treat natural gas under sulfur-containing conditions

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(5)400,000Nm3/d TEG dehydration unit

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(6)3 million Nm3/d TEG dehydration unit

Project Name: Gas Gathering and Dehydration Station Project in Heshen 4 Block of Hechuan Gas Field

Project location: Wusheng County, Sichuan Province

Construction scale: gas processing capacity of 3 million Nm3/d

Operating flexibility 50%~110%

Medium: Wet natural gas containing hydrogen sulfide,

Inlet: 3 million (101.325kPa, 20 ℃)natural gas,6.7~8.2MPa (g),Temperature 5-30 ℃

Outlet: Purified gas pressure 6.5~7.9MPa (g),Water dew point ≤ -5 ℃.

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We provided the TEG dehydration unit for the below projects

Wei 202 Triethylene Glycol Dehydration Unit Project (with a processing capacity of 3 million cubic meters/day)

Wei 204 Triethylene Glycol Dehydration Unit Project (with a processing capacity of 3 million cubic meters/day)

Ning201 Triethylene Glycol Dehydration Unit Project (with a processing capacity of 1.5 million cubic meters/day)

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 (7)  Gas molecular sieve dehydration unit

The raw gas for this project is high CO2 natural gas from Lian21 and Lian4 blocks in Fushan Oilfield, Hainan. In the early and middle stages of the pilot test, the produced gas from the two blocks in the Bailian gathering and transportation station is first separated from oil and gas, and then dried and dehydrated through a molecular sieve dehydration skid. Then, it is pressurized to 14-22MPa by a gas compressor and injected underground.
Client: CNPC Hainan Fushan Oilfield high CO2 natural
Processing capacity: 14~29×104m3/d
Working pressure: 3.25~3.65MPa (G)
Intake temperature: 15-30 ℃
Design pressure: 4MPa

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