Journal of Petroleum & Environmental Biotechnology

Development and operation practice on miniature liquefiers for scattered and isolated natural gas resources

2^nd International Conference and Expo on Oil and Gas

October 27-28, 2016 Rome, Italy

Maoqiong Gong, Jianfeng Wu, Zhaohu Sun, Xin Zou, Gaofei Chen and Kuiwei Cheng

Chinese Academy of Sciences, China

Scientific Tracks Abstracts: J Pet Environ Biotechnol

Abstract:

A series of moveable small scale skid-mounted liquefiers for scattered and isolated natural gas resources have been developed and tested, with liquefaction capacity of 10,000 Nm3/d, 15,000 Nm3/d, 30,000 Nm3/d, 60,000 Nm3/d and 100,000 Nm3/d. The compressor unit and cold box of liquefiers are compactly integrated in a skid. The liquefiers are based on a mixed-refrigerant liquefaction cycle with R22 pre-cooling. Most of the devices in liquefiers are easily available commercial refrigeration products. An oil-lubricated single-stage screw compressor is used for the compression of mixed-refrigerant, combined with air coolers. The core of cold box is an aluminum plate-fin heat exchanger with four flow passages. The liquefiers were tested and operated under different conditions. The minimum specific power consumption of 10,000 Nm3/d type was 0.54 kW h/Nm3, which was equivalent to 15.3% of the gas consumed with the rest liquefied. The power consumption of 30,000 Nm3/d type and 100,000 Nm3/d type were only 0.40 kW h/Nm3 (including all facilities) and 0.35 kW h/Nm3 respectively. This series of liquefiers could cover various liquefaction requirements such as small natural gas or coal-bed methane exploitations, distributed peak-shaving, and boil-off gas reliquefaction. A flexible distributed liquefaction center could be established with the combination of a set of small liquefiers.

Biography :

Maoqiong Gong has completed his PhD at Chinese Academy of Sciences. He has published more than 200 papers in reputed journals and has been serving as an Editorial Board Member of repute.

Email: gongmq@mail.ipc.ac.cn