System and method for preventing catalyst from overheating

Patent metadata

Field	Value
Publication number	US-9963400-B2
Application number	US-201615249029-A
Country	US
Kind code	B2
Filing date	Aug 26, 2016
Priority date	Aug 18, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.

First claim

What is claimed is:

1. A method for preventing a catalyst from overheating, the method comprising:
producing product gas by supplying reaction gas to a first reactor filled with a catalyst at least in part;
discharging some of the catalyst from the first reactor and supplying the catalyst to a second reactor that is at least partially filled with catalyst discharged from the first reactor;
cooling the catalyst in the second reactor by allowing a cooling fluid to pass through a catalyst bed in the second reactor; and
supplying the catalyst cooled in the second reactor to the first reactor,
wherein the second reactor comprises a path to allow the reaction gas to pass through the catalyst bed in the second reactor, and
wherein the reaction gas is pre-heated by heat exchange with the catalyst during passing through the path of the reaction gas and then supplied to the first reactor.

2. The method of claim 1 , wherein the producing the product gas comprises cooling the catalyst in the first reactor by allowing another cooling fluid to pass through the first reactor.

3. The system of claim 1 , wherein the catalyst is a catalyst of a particle shape having a diameter ranging from 1 to 9,000 micrometers, and
wherein the producing the product gas further comprises injecting the reaction gas into the first reactor at a speed higher than a minimum fluidization velocity of the catalyst.

4. The method of claim 1 , wherein the first reactor is a fluidized bed reactor and the product gas is produced in a state in which the catalyst in the first reactor is fluidized.

Assignees

• Korea Inst Energy Res

Inventors

• Ryu Ho-Jung
• Lee Dong-Ho
• Jin Gyoung-Tae
• Shun Do-Won
• Yi Chang-Keun
• Park Jae-Hyeon
• Bae Dal-Hee
• Jo Sung-Ho
• Lee Seung-Yong
• Park Youngcheol
• Moon Jong-Ho
• Joo Ji-Bong

Classifications

• B01J8/28

  the one above the other · CPC title

• B01J8/08 Primary

  with moving particles (with fluidised particles B01J8/18) · CPC title

• B01J2208/00752

  Feeding · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• B01J19/242

  in series · CPC title