Korea Institute of Energy Research

Youngcheol Park

Seung-yong Lee

Sung-ho Jo

Ho-jung Ryu

Gyoung-tae Jin

Dal-hee Bae

Jong-Ho Moon

Chang-keun Yi

Dong-ho Lee

Jae-hyeon Park

Do-won Shun

Ji-bong Joo

Jaehyeon Park

Dowon Shun

Doyeon Lee

Dong-Ho Lee

Hyungseok Nam

Chang-Keun Yi

The present invention is directed to a high pressure fluidized bed system using dual control valves, and an inner pressure control method thereof. The high pressure fluidized bed system includes a fluidized bed reactor, a pressure sensor which measures a pressure in the interior of the fluidized bed reactor, a cyclone part which is coupled to the fluidized bed reactor, a first valve allowing controlling of the exhaust gas, and a second valve allowing manually controlling of exhaust gas except for the exhaust gas controlled by the first valve. The first valve is capable of opening and closing automatically, and the second valve is capable of opening and closing manually, and are used in combination in the high pressure fluidized bed, allowing decreasing of the pressure variation within the reactor and improving the operation stability of the reactor.

Installation and operation method of dual control valves in a high pressure fluidized bed system

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.

System and method for preventing catalyst from overheating

A chemical looping combustion apparatus for solid fuels using different oxygen carriers is provided. The chemical looping combustion apparatus includes: a solid fuel chemical looping combustor configured to receive solid fuels and to produce carbon dioxide and steam by combustion of the solid fuels; a gaseous fuel chemical looping combustor configured to receive gaseous fuels and to produce carbon dioxide and steam by combustion of the gaseous fuels; and a devolatilization reactor configured to produce solids and gases by devolatilizing the solid fuels, and the solid fuels received by the solid fuel chemical looping combustor and the gaseous fuels received by the gaseous fuel chemical looping combustor are the solids and the gases produced by the devolatilization reactor, respectively. Accordingly, a reaction rate and an amount of oxygen transfer can increase, and necessity for low-priced oxygen carriers and a make-up cost of low-priced oxygen carriers can be reduced.

Chemical looping combustion method and apparatus for solid fuels using different oxygen carriers

A fluidized bed reactor is provided. The fluidized bed reactor includes a screw conveyor configured to penetrate through an upper portion of the fluidized bed reactor and to discharge solid particles to an outside from the fluidized bed reactor. The screw conveyor is configured to have an upper end protrude from the upper portion of the fluidized bed reactor and a lower end located at a height equal to or higher than a height of a distributor of the fluidized bed reactor.

Fluidized bed reactor having screw conveyor and fluidized bed solid circulation system using the same

Growing community of inventors

Daejeon, South Korea

Youngcheol Park