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Title: Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume IV. Gasification; gas cooling and scrubbing; ash treatment

Abstract

Coal is fed with recycled raw gas used as a carrier to the gasification system, consisting of four identical reactors and ancillary equipment. Oxygen from air separation and exhaust steam from steam turbine are also fed to the gasification system. During normal operation only steam flows through the grid of the reactor to create a fluidized bed where gasification of the coal takes place. Flow to the reactor venturi will be a mixture of steam and oxygen with the oxygen concentration limited to a maximum of 21% by volume. The flow to the center jet of the reactor will be a mixture of oxygen and steam to insure a minimum velocity at the outlet of the jet of 100 fps. The fluidized bed temperature will be controlled by varying the flow of steam to the grid. Fine particulates carried out of the fluidized bed by the raw gas are separated from the raw gas stream and returned to the gasifier by means of cyclones. The gas produced is cooled from 1860/sup 0/F to 236/sup 0/F and the heat recovered to generate steam. The gas is further scrubbed with water for the removal of entrained fines. Scrubbed raw gas from themore » raw gas venturi scrubber is compressed in gas compression. Agglomerated ash quenched in the Gasifier Quench Drum is discharged by gravity into the Ash Slurry Lock Hopper. Pressure in the Ash Slurry Lock Hopper is vented to atmospheric pressure, the motive water flow for the Ash Educator is activated and the Ash Slurry Discharge Valve to the Ash Educator is opened. Agglomerates are removed from the Lock Hoppers in the form of a slurry and transported as such to one of the two Ash Dewatering Bins where water is drained from the ash agglomerates. The agglomerates are then discharged into trucks for transport to the ash pile.« less

Publication Date:
Research Org.:
Memphis Light, Gas and Water Div., TN (USA)
OSTI Identifier:
5518613
Report Number(s):
FE-2582-1(Vol.4)
DOE Contract Number:  
EF-77-C-01-2582
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ASHES; WASTE DISPOSAL; DEMONSTRATION PLANTS; DESIGN; FUEL GAS; COOLING; SCRUBBING; U-GAS PROCESS; COAL GASIFICATION; ENGINEERING; EQUIPMENT; HEAT RECOVERY; PARTICLES; REMOVAL; SPECIFICATIONS; ENERGY RECOVERY; FLUIDS; FUELS; GAS FUELS; GASES; GASIFICATION; MANAGEMENT; RECOVERY; RESIDUES; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; 010404* - Coal, Lignite, & Peat- Gasification

Citation Formats

. Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume IV. Gasification; gas cooling and scrubbing; ash treatment. United States: N. p., 1979. Web.
. Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume IV. Gasification; gas cooling and scrubbing; ash treatment. United States.
. Sat . "Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume IV. Gasification; gas cooling and scrubbing; ash treatment". United States.
@article{osti_5518613,
title = {Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume IV. Gasification; gas cooling and scrubbing; ash treatment},
author = {},
abstractNote = {Coal is fed with recycled raw gas used as a carrier to the gasification system, consisting of four identical reactors and ancillary equipment. Oxygen from air separation and exhaust steam from steam turbine are also fed to the gasification system. During normal operation only steam flows through the grid of the reactor to create a fluidized bed where gasification of the coal takes place. Flow to the reactor venturi will be a mixture of steam and oxygen with the oxygen concentration limited to a maximum of 21% by volume. The flow to the center jet of the reactor will be a mixture of oxygen and steam to insure a minimum velocity at the outlet of the jet of 100 fps. The fluidized bed temperature will be controlled by varying the flow of steam to the grid. Fine particulates carried out of the fluidized bed by the raw gas are separated from the raw gas stream and returned to the gasifier by means of cyclones. The gas produced is cooled from 1860/sup 0/F to 236/sup 0/F and the heat recovered to generate steam. The gas is further scrubbed with water for the removal of entrained fines. Scrubbed raw gas from the raw gas venturi scrubber is compressed in gas compression. Agglomerated ash quenched in the Gasifier Quench Drum is discharged by gravity into the Ash Slurry Lock Hopper. Pressure in the Ash Slurry Lock Hopper is vented to atmospheric pressure, the motive water flow for the Ash Educator is activated and the Ash Slurry Discharge Valve to the Ash Educator is opened. Agglomerates are removed from the Lock Hoppers in the form of a slurry and transported as such to one of the two Ash Dewatering Bins where water is drained from the ash agglomerates. The agglomerates are then discharged into trucks for transport to the ash pile.},
doi = {},
url = {https://www.osti.gov/biblio/5518613}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {12}
}

Technical Report:
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