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Title:
COKE-CONTROL REACTOR, DEVICE FOR PREPARING LOW-CARBON OLEFINS FROM OXYGEN-CONTAINING COMPOUND AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/077458
Kind Code:
A1
Abstract:
A coke-control reactor, a device for preparing low-carbon olefins from an oxygen-containing compound and the use thereof. The coke-control reactor comprises a riser reactor and a bed-layer reactor, wherein the bed-layer reactor comprises a bed-layer reactor shell, which encloses to form a reaction region I, a transition region and a gas-solid separation region I from bottom to top; the reaction region I is provided with a bed-layer reactor distributor; the outside of the reaction region I is further provided with a coke-control catalyst delivery pipe; the upper section of the riser reactor penetrates the bottom of the bed-layer reactor and is axially inserted into the bed-layer reactor; and an outlet end of the riser reactor is located in the transition region. The coke-control reactor can control the conversion and generation of coke species in the catalyst, that is, non-active macromolecular coke species remaining in a regenerated catalyst are converted into micromolecular coke species, and raw materials in the riser reactor and the bed-layer reactor can further enter the catalyst to generate highly active micromolecular coke species, such that the selectivity of ethylene is improved.

Inventors:
ZHANG TAO (CN)
YE MAO (CN)
ZHANG JINLING (CN)
XU SHULIANG (CN)
TANG HAILONG (CN)
WANG XIANGAO (CN)
ZHANG CHENG (CN)
JIA JINMING (CN)
WANG JING (CN)
LI HUA (CN)
LI CHENGGONG (CN)
LIU ZHONGMIN (CN)
Application Number:
PCT/CN2020/121567
Publication Date:
April 21, 2022
Filing Date:
October 16, 2020
Export Citation:
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Assignee:
DALIAN INST CHEM & PHYSICS CAS (CN)
International Classes:
B01J29/90; C07C1/20; C07C1/24; C07C11/04; C07C11/06
Foreign References:
CN107961743A2018-04-27
CN102276406A2011-12-14
US4304659A1981-12-08
CN102875296A2013-01-16
CN102086402A2011-06-08
Other References:
See also references of EP 4082658A4
Attorney, Agent or Firm:
PERIODIC LAW FIRM (CN)
Download PDF:
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