China University of Petroleum

Petrochina Company Limited

Chaohe Yang

Honghong Shan

Yuanyu Tian

Jinhong Zhang

Wenchun Jiang

Chunyi Li

Feng Du

An Ma

Shandong Tu

Xiang Feng

Lei Ge

Dong Lin

Jianming Gong

Yongxiao Tuo

Jianfang Zhang

Xin Jin

Genlin Niu

Yongshan Tu

Yudong Sun

Zheng Li

Zhongxiang Han

Chunxiao Gao

Xiang Ling

Tong Su

Yibin Liu

Jiming Liu

Xiaobo Chen

A method for producing chemicals from crude oil by double-tube parallel multi-zone catalytic conversion is provided. The method may include the following steps: feeding the crude oil directly or separating the crude oil into light and heavy components by flash evaporation or distillation after desalination and dehydration; strengthening the contact and reaction between oil gas and catalyst by using two parallel reaction tubes with novel structure, controlling the reaction by zones, carrying out optimal combination on feeding modes according to different properties of reaction materials, controlling suitable reaction conditions for different materials, and increasing the production of light olefins and aromatics.

Method for producing chemicals from crude oil by double-tube parallel multi-zone catalytic conversion

A method for preparing titanium-containing molecular sieves include the following steps: irradiating a mixed solution containing a silicon source, a template and a titanium source by a light source containing ultraviolet light before crystallization, and then subjecting the mixed solution to crystallization and post-treatment to obtain the titanium-containing molecular sieve. In the method for preparing titanium-containing molecular sieve of the present invention, the mixed solution containing the silicon source, the template and the titanium source is treated with the ultraviolet light, and free radicals generated by the ultraviolet light can effectively dissociate titanium oligomers and accelerate the hydrolysis of the silicon source, and thus match the hydrolysis rate of a silicon-titanium precursor, thereby preventing a titanium monomer from self-polymerization to form non-framework titanium. Therefore, a titanium-containing molecular sieve that does not contain the non-framework titanium can be quickly prepared.

Method for preparing titanium silicon molecular sieve

A method for homogenizing the compositions and mechanical performances of nickel-based material brazed joints, includes three homogenized manufacturing steps: Step I, assembling the welding sample, placing it into the vacuum furnace, and then heating up to 830&#x2dc;860&#xb0; C. and holding the temperature; then heating up again to 1050&#x2dc;1100&#xb0; C. and holding the temperature; allowing for slow self-cooling in vacuum till it reaches 620&#x2dc;640&#xb0; C.; then filling the furnace with nitrogen and starting the vacuum furnace fan at the same time, so that the sample is cooled down to 40&#x2dc;60&#xb0; C.; Step II, raising the temperature up to 1140&#x2dc;1160&#xb0; C. and holding, then cooling it down to the room temperature through water-quenching; Step III, raising the temperature of the welding sample up to 680&#x2dc;750&#xb0; C. again, and cooling it down to the room temperature through air cooling.

Method for homogenizing the compositions and mechanical performances of nickel-based material brazed joints

The present invention relates to a catalytic cracking process and a device used in the process in particular, the present invention provides a catalytic cracking process, which comprises which comprises:

Catalytic cracking process and the device used therein

Growing community of inventors

Qingdao, China

Chaohe Yang