How to do add antifoam and in gas?

Gas scrubbing                                   

Foaming substance: the gas released by the scrubber

Foaming principle: The scrubbing equipment is prone to foam when removing CO2 and H2S. This process is commonly used in natural gas and refinery gas, as part of gas processing, used in the production of ethylene (steam cracking) and ethylene oxide. Trace impurities in the intake air such as liquid hydrocarbons, wellhead inhibitors, corrosion solids and valve grease, no matter what kind of absorbent (MDEA, DEA, TEA and DGA or carbonate) is used, foam will also be generated.

Site environment: acidic.

Adding point of defoamer: before the amine cooler and before the gas reflux condenser;

Delayed coking

Foaming substances: coke powder and coke:Foaming principle: During the reaction, the coke layer formed by condensation gradually cokes on the inner wall of the coke drum from top to bottom. There is a foam layer on the top of the coke layer, and there are many intermediate products in the resultant. Foam is produced in coking heavy oil and pitch fractions.

Site environment: high temperature, 490~500℃.

Adding point of defoamer: add 10ppm of defoamer directly in the drum or before entering the furnace, which can control foam well. Speed up the operation of the drum and reduce coke deposits in the overhead steam line.

 Petroleum refining

Foaming substance: crude oil

Foaming principle: When oil is mined, it will be mixed with many impurities, resulting in poor oil quality and color. At this time, vacuum distillation is required to remove impurities.

However, in chemical operations, carbon dioxide is easily generated, and small molecules such as hydrogen sulfide overflow from the viscous system, resulting in the production capacity not reaching the design index, and the obtained distillate has a darker color.

Site environment: high temperature, 150~400℃.

Adding point of defoamer: add 10ppm of defoamer directly in the drum or before entering the furnace, which can control foam well. Speed up the operation of the drum and reduce coke deposits in the overhead steam line.

Amber Zhang Ms.

Foreign trade 

Zhejiang Ruico Advanced Materials Co., Ltd. (Stock No.873233)

Add: No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China 313018

Phone: +86 (572) 2903236

Fax: +86 (572) 2905222

Wechat: 15534631339

Website: www.ruicoglobal.com 

Email: [email protected]