China Petroleum Chemical Corporation

Dalian Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

Fushun Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd.

Xiuna Yang

Zonglin Ruan

Feng Zhou

Ping Jin

Minghua Guan

Kai Qiao

Yang Jiang

Shumei Zhang

Huimin Qi

Huixia Ma

Shaozhong Peng

Shengzhong Zhang

Changjian Liao

Dechen Bo

Jingshan Gao

Haochen Wang

Jiawen Zhou

Guoying Cui

Jia He

Rui Jiang

A process for producing propylene involves dehydration of isopropanol. The dehydration process includes a step of subjecting a starting material containing isopropanol to a dehydration reaction in the presence of a dehydration catalyst comprising alumina to produce a product containing propylene. The starting material has a water content of 0.1 to 10.0 wt % (relative to 100 wt % of the total mass of the starting material), and the product has a total content of C2 unsaturated impurities and C3-C4 unsaturated impurities of 80 ppm or less (relative to 100 wt % of the total mass of the product).

Preparation method and production device for propylene

A liquid-phase reactor has an outer cylinder and an inner cylinder disposed along an axial direction of the reactor. The outer cylinder has a top head, a straight cylinder section and a bottom head. An annular space is formed between the inner cylinder and the outer cylinder. A top end of the inner cylinder is open and is in communication with the annular space. The inner cylinder has an upper cylinder and a lower cylinder sequentially from top to bottom. The upper cylinder is positioned in the straight cylinder section, with its cross-sectional area being gradually reduced from top to bottom. The lower cylinder is positioned in the bottom head, with its cross-sectional area being gradually increased from top to bottom. An inorganic membrane tube extending along the axial direction of the reactor is provided in the lower cylinder so that a shell-and-tube structure is formed.

Liquid-phase reactor and application thereof

An upflow reactor (), includes a housing (), a catalyst bed layer () and a pressing device (). The housing () is internally provided with a reaction chamber (), a reaction material inlet () and a reaction material outlet () which are in communication with the reaction chamber () are provided on the housing (). The catalyst bed layer () is provided within the reaction chamber (), the pressing device () is provided within the reaction chamber () and located above the catalyst bed layer (). At least a part of the pressing device () is movable up and down so that the at least a part of the pressing device () can be pressed against the catalyst bed layer ().

Upflow reactor

A washing and desalting device includes a first shell and a plurality of filaments. The first shell has a first receiving cavity and is provided with a liquid inlet and a liquid outlet that communicate with the first receiving cavity. The plurality of the filaments is provided in the first receiving cavity, and the length direction of each of the filaments is consistent with that of the first receiving cavity. The device can be incorporated in a washing and dehydrating system.

Washing and desalting device, washing and desalting method, desalting and dehydrating system, and desalting and dehydrating method

A dividing wall column (), comprising: a partition plate () arranged along an axial direction of the dividing wall column (); a first shaft () arranged along a radial direction of the dividing wall column (), and a first splitter plate () with an end connected to the first shaft (), which are both placed beneath the partition plate (), wherein the first splitter plate () is configured to be pivotable around the first shaft (), so as to control distribution of a stream from below the first splitter plate () into spaces formed at two sides of the partition plate (); and a second shaft () arranged along the radial direction of the dividing wall column (), and a second splitter plate () with an end connected to the second shaft (), which are both placed above the partition plate (), wherein the second splitter plate () is configured to be pivotable around the second shaft (), so as to control the stream from above the second liquid splitter plate () into the spaces formed at two sides of the partition plate ().

Divided-wall column

Growing community of inventors

Liaoning, China

Xiuna Yang