China Petroleum & Chemical Corporation

Research Institute of Petroleum Processing, Sinopec

Beijing Sanju Environmental Protection and New Material Co., Ltd.

Zhiqiang Wu

Qinghua Duan

Han Zhou

Jun Long

Yi Zhao

Zhenyi Liu

Xin Xie

Xiangsheng Wang

Zuoxin Huang

Lihua Wang

Shuo Su

Shihao Xin

Xinhua Li

Xiaoguang Zhao

This invention relates to a lubricating oil composition and production thereof. The lubricating oil composition comprises a Mannich base represented by the following formula (III) (wherein A and Rare as defined in the specification) and a lubricant base oil. The lubricating oil composition according to this invention exhibits excellent cleansing and dispersing performance and excellent anticorrosion performance. 

Lubricating oil composition and production thereof

This invention relates to a novel hindered phenol compound of Formula (I) (wherein the groups R and R' are as defined in the specification), preparation thereof and use thereof as an antioxidant. By using the hindered phenol compound of this invention as an antioxidant, it is possible to produce a lubricant oil composition exhibiting excellent oxidation resistance at elevated temperatures. 

Hindered phenol compound, preparation thereof and use thereof as an antioxidant

A wet desulfurizing method for removal of HS from gaseous stream at normal temperature, the method including: (a) contacting and reacting the gaseous stream containing HS with a suspension containing desulfurizer in a desulfurization reactor; (b) leading the suspension containing waste agent produced by desulfurizing of desulfurizer after the reaction in step (a) to a regenerative reactor, and regenerating the waste agent using an oxygen-containing gas; (c) leading the suspension containing desulfurizer regenerated in step (b) to the desulfurization reactor in step (a), and contacting and reacting with the gaseous stream containing HS. A simple method for removing hydrogen sulfide from gas at room temperature and normal pressure, which features high desulfurization rate and low cost.

Method for removing hydrogen sulfide from gaseous stream at normal temperature

Growing community of inventors

Beijing, China

Zhiqiang Wu