China Petroleum Chemical Corporation

Shanghai Research Institute of Petrochemical Technology, Sinopec

Linna Zhang

Juntao Liu

Lei Li

Weimin Yang

Wanmin Wang

Siqin Li

Jun Kuai

Haifeng Song

The present invention relates to a method for the production of ethylene glycol using a feedstock comprising an oxalate and a catalyst containing copper and/or a copper oxide, comprising contacting the feedstock with the catalyst in a reactor under the conditions of a temperature in the range from about 170 to about 270&#xb0; C., a weight hourly space velocity of the oxalate in the range from about 0.2 to about 5 h, a molar ratio of hydrogen to the oxalate in the range from about 40:1 to about 200:1 and a reaction pressure in the range from about 1.5 to about 10 MPa, to produce an effluent containing ethylene glycol, in which the reactor is a tube-array reactor using partitioned heat exchange and adopting outer and inner tubes configured in a double-tube structure to facilitate the heat exchange of the catalyst.

Method for the production of ethylene glycol

The present invention relates to a process for producing C-Calkyl nitrite, comprising loading a resin catalyst layer and/or a porous filler layer into a reactor, passing nitrogen oxide, oxygen and C-Calkanol as raw materials through the resin catalyst layer and/or porous filler layer in a counter current, parallel current or cross current manner, reacting under the conditions including a reaction temperature of from 0 to 150&#xb0; C., a reaction pressure of from &#x2212;0.09 to 1.5 MPa, a molar ratio of C-Calkanol/nitrogen oxide of 1-100:1, a molar ratio of nitrogen oxide/oxygen of 4-50:1, to obtain an effluent containing C-Calkyl nitrite, wherein said nitrogen oxide is NO, or a mixed gas containing NO and one or more selected from NOand NO.

Process for producing Cl-C4 alkyl nitrite

A process for selective oxidative dehydrogenation of a hydrogen-containing CO mixed gas, comprising contacting a hydrogen-containing CO mixed gas raw material with at least one catalyst entity having an increased activity gradient disposed in a reactor under at least one reaction condition chosen from a reaction temperature ranging from 100 to 300&#xb0; C., a volume space velocity ranging from 100 to 10000 h, and a reaction pressure ranging from &#x2212;0.08 to 5.0 MPa, wherein the molar ratio of oxygen to hydrogen in the raw material ranges from 0.5:1 to 5:1.

Process for selective oxidative dehydrogenation of a hydrogen-containing CO mixed gas

A process of producing C-Calkyl nitrite, comprising the following steps: a) firstly feeding nitrogen oxide and oxygen into Reactor I, contacting with an aluminosilicate catalyst, and reacting to produce an effluent I containing NOand unreacted NO; b) feeding the effluent I and C-Calkanol into Reactor II, and reacting to produce an effluent II containing C-Calkyl nitrite; and c) separating the effluent II containing C-Calkyl nitrite to obtain C-Calkyl nitrite; wherein reactor I is a fixed bed reactor, and Reactor II is a rotating high-gravity reactor; said nitrogen oxide in step a) is NO, or a mixed gas containing NO and one or more of NOand NO, wherein the molar number of NO is greater than that of NO, if any; and the molar ratio of NO in nitrogen oxide to oxygen is 4-25:1.

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Shanghai, China

Linna Zhang