[专利]
Fluidized bed reactor and method for preparing polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde
申请号：
2015US-14589651
申请日：
2015-01-05
公开号：
US9346916 B2 2016-05-24 [US9346916]US2015273426 A1 2015-10-01 [US20150273426]
公开日：
2016-05-242015-10-01
申请人：
SHANDONG YUHUANG CHEMICAL;TSINGHUA UNIVERSITY
专利权人：
SHANDONG YUHUANG CHEMICAL;TSINGHUA UNIVERSITY
发明人：
WANG JINFU;TANG QIANG;WANG SHENGWEI;WANG TIEFENG;CHEN SHUANGXI;WANG YUQIANG
国家：
IPC：
B01J-008/18;B01J-008/24;B01J-008/28;C08G-065/00
(US9346916) The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcomer and an interstage downcomer. A process for preparation of polyoxymethylene dimethyl ethers comprises the steps of: fluidizing gas is introduced into a bottom bed from the gas inlet via the bottom component related gas upward channel through the gas distributor; the fluidizing gas goes upwards and flows out of the reactor via the gas outlet; paraformaldehyde and dimethoxymethane are introduced into a bed through the fluid inlet; the fluid goes downwards and leaves the reactor via the fluid outlet. Compared with a conventional cannula reactor, the fluidized bed reactor improves the dispersion uniformity of catalyst and conversion of formaldehyde.
