Coke control reactor, device for preparing low-carbon olefins from oxygen-containing compound, and use thereof

Patent metadata

Field	Value
Publication number	US-12351535-B2
Application number	US-202017801811-A
Country	US
Kind code	B2
Filing date	Oct 16, 2020
Priority date	Oct 16, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A coke control reactor, a device for preparing low-carbon olefins from an oxygen-containing compound, and a use thereof are provided. The coke control reactor includes a riser reactor and a bed reactor; the bed reactor includes a bed reactor shell, and the bed reactor shell encloses a reaction zone I, a transition zone, and a gas-solid separation zone I from bottom to top; a bed reactor distributor is arranged in the reaction zone I; a coke controlled catalyst delivery pipe is arranged outside the reaction zone I; an upper section of the riser reactor penetrates through a bottom of the bed reactor and is axially inserted in the bed reactor; and an outlet end of the riser reactor is located in the transition zone. The coke control reactor can control the conversion and generation of coke species in a catalyst.

First claim

What is claimed is:

1. A reactor, wherein the coke control reactor comprises a riser reactor and a bed reactor;
the bed reactor comprises a bed reactor shell, and the bed reactor shell encloses a first reaction zone, a transition zone, and a first gas-solid separation zone from bottom to top;
a bed reactor distributor is arranged in the first reaction zone;
a coke controlled catalyst delivery pipe is arranged outside the first reaction zone;
a section of the riser reactor penetrates into the bed reactor and is axially inserted in the bed reactor;
an outlet end of the riser reactor is located in the transition zone; and
at least one perforated plate is arranged in the first reaction zone; the at least one perforated plate are axially arranged on a periphery of the riser reactor in sequence, the at least one perforated plate are arranged horizontally, and a periphery of the at least one perforated plate abuts against an inner wall of the bed reactor, such that a stream passes through apertures in the at least one perforated plate.

2. The coke control reactor according to claim 1 , wherein
the outlet end of the riser reactor is located above the at least one perforated plate;
the bed reactor distributor is located below the at least one perforated plate; and
the at least one perforated plate has a porosity of 1% to 30%.

3. The coke control reactor according to claim 1 , wherein the first gas-solid separation zone is provided with a bed reactor gas-solid separator and a bed reactor gas collection chamber;
a gas outlet of the bed reactor gas-solid separator communicates with the bed reactor gas collection chamber;
a catalyst outlet of the bed reactor gas-solid separator is located above the at least one perforated plate;
the bed reactor gas collection chamber communicates with a coke control product gas delivery pipe located outside the bed reactor;
the bed reactor distributor is configured to feed a bed reactor raw material, and the bed reactor raw material, based on a weight percentage of 100%, comprises 0 wt % to 20 wt % of hydrogen, 0 wt % to 50 wt % of methane, 0 wt % to 50 wt % of ethane, 0 wt % to 20 wt % of ethylene, 0 wt % to 50 wt % of propane, 0 wt % to 20 wt % of propylene, 0 wt % to 90 wt % of butane, 0 wt % to 90 wt % of butene, 0 wt % to 90 wt % of pentane, 0 wt % to 90 wt % of pentene, 0 wt % to 90 wt % of hexane, 0 wt % to 90 wt % of hexene, 0 wt % to 50 wt % of methanol, 0 wt % to 50 wt % of ethanol, and 0 wt % to 50 wt % of water, and a total content of methanol, ethanol, and water is greater than or equal to 10 wt %; and
the riser reactor is configured to feed a catalyst and a riser reactor raw material, and the riser reactor raw material, based on a weight percentage of 100%, comprises 0 wt % to 20 wt % of hydrogen, 0 wt % to 50 wt % of methane, 0 wt % to 50 wt % of ethane, 0 wt % to 20 wt % of ethylene, 0 wt % to 50 wt % of propane, 0 wt % to 20 wt % of propylene, 0 wt % to 90 wt % of butane, 0 wt % to 90 wt % of butene, 0 wt % to 90 wt % of pentane, 0 wt % to 90 wt % of pentene, 0 wt % to 90 wt % of hexane, 0 wt % to 90 wt % of hexene, 0 wt % to 50 wt % of methanol, 0 wt % to 50 wt % of ethanol, and 0 wt % to 50 wt % of water, and a total content of methanol, ethanol, and water is greater than or equal to 10 wt %.

Assignees

• Dalian Inst Chem & Physics Cas

Inventors

• Zhang Tao
• Ye Mao
• Zhang Jinling
• Xu Shuliang
• Tang Hailong
• Wang Xiangao
• Zhang Cheng
• Jia Jinming
• Wang Jing
• Li Hua
• Li Chenggong
• Liu Zhongmin

Classifications

• C07C2529/85

  Silicoaluminophosphates (SAPO compounds) · CPC title

• B01J8/26

  with two or more fluidised beds, e.g. reactor and regeneration installations · CPC title

• B01J8/228

  externally, i.e. the particles leaving the vessel and subsequently re-entering it · CPC title

• B01J8/1809

  Controlling processes · CPC title

• Y02P20/584

  Recycling of catalysts · CPC title