Global to push GA events into
skip to main content

Title: Pressurized reactor system and a method of operating the same

A method and apparatus are provided for operating a pressurized reactor system in order to precisely control the temperature within a pressure vessel in order to minimize condensation of corrosive materials from gases on the surfaces of the pressure vessel or contained circulating fluidized bed reactor, and to prevent the temperature of the components from reaching a detrimentally high level, while at the same time allowing quick heating of the pressure vessel interior volume during start-up. Superatmospheric pressure gas is introduced from the first conduit into the fluidized bed reactor and heat derived reactions such as combustion and gassification are maintained in the reactor. Gas is exhausted from the reactor and pressure vessel through a second conduit. Gas is circulated from one part of the inside volume to another to control the temperature of the inside volume, such as by passing the gas through an exterior conduit which has a heat exchanger, control valve, blower and compressor associated therewith, or by causing natural convection flow of circulating gas within one or more generally vertically extending gas passages entirely within the pressure vessel (and containing heat exchangers, flow rate control valves, or the like therein). Preferably, inert gas is provided asmore » a circulating gas, and the inert gas may also be used in emergency shut-down situations. In emergency shut-down reaction gas being supplied to the reactor is cut off, while inert gas from the interior gas volume of the pressure vessel is introduced into the reactor.« less
Inventors:
 [1]
  1. (Karhula, FI)
Issue Date:
OSTI Identifier:
870469
Assignee:
A. Ahlstrom Corporation (Noormarkku, FI) NETL
Patent Number(s):
US 5526582
Contract Number:
FC21-91MC27364
Research Org:
City of Lakeland
Country of Publication:
United States
Language:
English
Subject:
pressurized; reactor; method; operating; apparatus; provided; precisely; control; temperature; pressure; vessel; minimize; condensation; corrosive; materials; gases; surfaces; contained; circulating; fluidized; bed; prevent; components; reaching; detrimentally; level; time; allowing; quick; heating; interior; volume; start-up; superatmospheric; gas; introduced; conduit; heat; derived; reactions; combustion; gassification; maintained; exhausted; circulated; inside; passing; exterior; exchanger; valve; blower; compressor; associated; therewith; causing; natural; convection; flow; vertically; extending; passages; entirely; containing; exchangers; rate; valves; therein; preferably; inert; emergency; shut-down; situations; reaction; supplied; cut; natural convection; circulating fluid; vertically extending; control valves; gas volume; reaction gas; bed reactor; pressure gas; pressure vessel; heat exchange; fluidized bed; heat exchanger; flow rate; inert gas; heat exchangers; atmospheric pressure; control valve; superatmospheric pressure; associated therewith; time allowing; pressurized reactor; corrosive materials; rate control; circulating gas; circulating fluidized; interior gas; precisely control; convection flow; corrosive material; containing heat; /34/60/110/

Similar records in DOepatents and OSTI.GOV collections: