Experimental investigation of influence of high-pressure condition on filtration performance of natural gas filter cartridge

Experimental investigation of influence of high-pressure condition on filtration performance of natural gas filter cartridge

Natural gas

Pressure drop

Natural gas transportation

Testing

Drops

Natural gas fields

High pressure effects

Filtration

High pressure engineering

Biofilters

Projectiles

Pore size

Tensile strength

In order to explore the changing law and influencing factors of the filtering performance of natural gas filter elements under high pressure conditions, four types of filter elements were selected as the research objects, and field tests and laboratory performance tests were carried out. The evaluation was carried out in turn according to the technical standards, including the field test for about 410 d, the laboratory test before and after the field test, and the performance test on filter layers. It was found that after the field test, the pressure drop in filter cartridges increased by about 20%, and the rise rate of pressure drop increased even more under the same experiment condition of gas-solid filtration, while the relative difference of the filtration efficiency and quality factor decreased between the four types of filter cartridges. The filter layers were compressed by 7%-31% under the high-pressure condition. As particles were embedded or deposited at the filter media, the permeability of each filter layer generally decreased while the tensile strength of the material increased. Besides, some methods were shown to benefit the stable and reliable operation of the filter cartridge under high pressure conditions, including the selection of fiber material with uniform pore size distribution, composite material with cascade design of filtration accuracy, pleating of filtration layers and inlet side skeleton with pre-separation and diversion functions. The research provides a guidance for the development and optimization of separation cartridges suitable for high-pressure natural gas transportation. 2021, Editorial Board of CIESC Journal. All right reserved.

2669-2679

5

72

Huagong Xuebao/CIESC Journal

2021

Liu, Zhen

Du, Huadong

Hu, Xu

Ji, Zhongli

journalArticle

4381157

10.11949/0438-1157.20201260