Wanhua Chemical (Ningbo) Co., Ltd.

Wanhua Chemical Group Co., Ltd.

Wanhua Chemical Co., Ltd.

Wuxi Luo

Weiqi Hua

Hongke Zhang

Peng Liu

Jiansheng Ding

Lei Wang

Yu Yao

Bin Chen

Zaigang Yang

Nan Zhao

Liangfeng Shao

Xiaofei Qiao

Mingyan Song

Yifeng Chen

Jianmao Guo

Junxian Liu

Changbao Xu

Yan Song

Jinke Jiang

Haibing Jia

Jingkui Wang

Changhao Ke

Tianyong Yu

Kunpeng Zhang

The apparatus includes one or more cylindrical housings connected to one another, a jacket on an outer side of a housing, an inner cylinder disposed at least in an interior of a first cylindrical housing, a heat insulation gasket, inner members, a corrosive high temperature gas inlet disposed on the heat insulation gasket, a gas and liquid phase outlet disposed at a bottom of the housing or a bottom of a last housing and a coolant inlet and outlet connected to an interior of the jacket. The heat insulation gasket seals the first cylindrical housing and a top of the inner cylinder in the interior of the first cylindrical housing. The inner members are distributed along a wall of the housing, communicate an interior of the jacket with an interior of the housing, and distribute a liquid in the interior of the jacket to the interior of the housing.

Apparatus and method for rapid cooling of high temperature gas

The present invention relates to a catalyst for preparing phosgene and a method for preparing phosgene using the catalyst. Said method comprises: modifying the surface of an activated carbon coating/foamed silicon carbide structural catalyst using an alkali metal salt; filling the catalysts having different thickness of the activated carbon coating and different amount of the alkali metal salt in different sections in the axial direction of the multi-tubular reactor of the fixed bed, and preparing phosgene using Cland CO. The radial and axial temperature difference of the catalyst bed is lowered by using the alkali metal salt-modified activated carbon coating/foamed silicon carbide structural catalyst and by segmental filling, so that high temperature of tube wall is obtained in the case of a larger tube diameter, and high quality of steam is obtained stably.

Catalyst for preparing phosgene and method for preparing phosgene using the same

Growing community of inventors

Shandong, China

Wuxi Luo