Chinese Academy of Sciences

Shuanghe Meng

Zhongmin Liu

Hui Zhou

Yong Liu

Hongchao Liu

Wenliang Zhu

Youming Ni

Shiping Liu

Lina Li

Tao Zhang

Peng Fei Tian

Mao Ye

Lei Xu

Changqing He

Kai Huang

Yue Qi

Lixin Yang

Qiang Guo

Cuiyu Yuan

Jingjing Shen

A built-in electrode electrical capacitance tomography sensor, characterized in that the electrical capacitance tomography sensor is a barrel sensor, and sequentially comprises, from inside to outside, an array distribution electrode (), an electrode insulating sleeve (), a flange outer tube (), an insulating tube () and a signal transmission line. The array distribution electrode () includes N electrode sheets of the same size and consists of measurement ends and fixed ends, N being an integer of 8-16. The electrode is connected to an electrical capacitance tomography signal acquisition system () by means of a transmission line, and the acquired electrical capacitance data is sent to the electrical capacitance tomography signal acquisition system () by means of a signal transmission line, and is then sent to an imaging computer by means of the electrical capacitance tomography signal acquisition system () so as to complete image reconstruction.

Built-in electrode electrical capacitance tomography sensor

A method for producing ethanol and coproducing methanol on a catalyst in a reactor using a co-feed of a synthesis gas and acetate as a reaction raw material comprising passing a raw material gas containing an acetate and a synthesis gas through a reactor loaded with a catalyst to produce ethanol and coproduce methanol under conditions of a reaction temperature of 150-350&#xb0; C., a reaction pressure of 0.1-20.0 MPa, a reaction volume hourly space velocity of 100-45000 mlgh, and an acetate weight hourly space velocity of 0.01-5.0 h; and the active components of the catalyst are copper and optionally zinc and/or aluminum, which greatly facilitates the conversion of carbon monoxide to methanol, while an extremely high activity of acetate hydrogenation is maintained.

Method for producing ethanol and coproducing methanol

A method for preparing a polyoxymethylene dimethyl ether carbonyl compound and/or methyl methoxyacetate as intermediates for producing ethylene glycol, which comprises passing a raw material: polyoxymethylene dimethyl ether or methylal together with carbon monoxide and hydrogen gas through a reactor carrying an acidic molecular sieve catalyst, and performing a reaction to prepare a corresponding product under an appropriate condition where no other solvent is added, in which the process of the reaction is a gas-liquid-solid three-phase reaction, the raw material of polyoxymethylene dimethyl ether or methylal has a high conversion rate, each product has a high selectivity, the catalyst has a long service life, additional solvents are not required to be used, and reaction conditions are relatively mild.

Method for preparing polyoxymethylene dimethyl ether carbonyl compound and methyl methoxyacetate

The present invention relates to a SAPO-34 molecular sieve having both micropores and mesopores and synthesis method thereof. The mesopore diameter in the molecular sieve is in a range of 2-10 nm and the mesopore volume thereof is 0.03-0.3 cm/g. Triethylamine is used as a template agent and the pore size modifiers are added to the synthesis gel at the same time in the synthesis process, thereby the prepared molecular sieve crystals have mesopore distribution besides micropores. The SAPO-34 molecular sieve synthesized in the present invention can be used as catalysts for conversion of oxygen-containing compounds to lower olefins.

SAPO-34 molecular sieve having both micropores and mesopores and synthesis methods thereof

The present invention provides a method for preparing methyl acetate, in which a feed gas containing an organic amine, dimethyl ether, carbon monoxide and optional hydrogen gas goes through a reactor loaded with a H-type mordenite catalyst, to produce methyl acetate; wherein said H-type mordenite catalyst is a H-type mordenite catalyst with adsorption of an organic amine. The method in the present invention improves the catalyst stability and prolongs the catalyst life, by using the H-type mordenite catalyst with adsorption of an organic amine as the catalyst and adding the organic amine in the feed gas to replenish the organic amine desorbed from the catalyst during the reaction.

Method for preparing methyl acetate

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Dalian, China

Shuanghe Meng