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Report on results of research. Basic studies on characteristics of coal char gasification under pressure; Sekitan char no kaatsuka ni okeru gas ka tokuseino kiso kenkyu seika hokokusho

Abstract

This paper explains basic studies on characteristics of coal char gasification under pressure. Hydro-gasification of coal needs as a gasifying agent a large amount of hydrogen, which is effectively produced by the water gasification of exhaust unreacted residual char. In fiscal 1975, gasification was tested on Taiheiyo coal carbonized char by an atmospheric fluidized gasifier of 28 mm bore. In fiscal 1976, experiment was conducted under pressure by fully improving the auxiliary safety equipment. The char and gas yield increased with higher pressure in pressurized carbonization by an autoclave. In fiscal 1977, clinker was successfully prevented by using quartz sand for a fluidized medium. In fiscal 1978, two-stage continuous gasification was examined. In fiscal 1979, correlation was determined between operation factors such as gasification pressure, temperature, etc., and clinker formation/char reactivity. An experiment was conducted for particle pop-out using a pressurized fluidized bed of 100 mm inner diameter, with the pop-out quantity found to be proportional to the 0.38th power of a pressure. A high pressure fluidized gasifier was built having a char processing capacity of 1 t/day, 20 atmospheric pressure, and an inner diameter of 100 mm. In fiscal 1980, this device was continuously operated, elucidating problems for the  More>>
Authors:
"NONE"
Publication Date:
Mar 01, 1981
Product Type:
Technical Report
Report Number:
JP-NEDO-010017571
Resource Relation:
Other Information: PBD: Mar 1981
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; CHARS; GASIFICATION; PRESSURIZATION; HYDROGEN; WATER GAS PROCESSES; FLUIDIZED BEDS; AUTOCLAVES; SILICATE MINERALS; SINTERED MATERIALS; CHEMICAL REACTION YIELD; PILOT PLANTS
OSTI ID:
20123620
Research Organizations:
New Energy and Industrial Technology Development Organization, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JN0040732
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20123620
Submitting Site:
NEDO
Size:
160 pages
Announcement Date:

Citation Formats

Report on results of research. Basic studies on characteristics of coal char gasification under pressure; Sekitan char no kaatsuka ni okeru gas ka tokuseino kiso kenkyu seika hokokusho. Japan: N. p., 1981. Web.
Report on results of research. Basic studies on characteristics of coal char gasification under pressure; Sekitan char no kaatsuka ni okeru gas ka tokuseino kiso kenkyu seika hokokusho. Japan.
1981. "Report on results of research. Basic studies on characteristics of coal char gasification under pressure; Sekitan char no kaatsuka ni okeru gas ka tokuseino kiso kenkyu seika hokokusho." Japan.
@misc{etde_20123620,
title = {Report on results of research. Basic studies on characteristics of coal char gasification under pressure; Sekitan char no kaatsuka ni okeru gas ka tokuseino kiso kenkyu seika hokokusho}
abstractNote = {This paper explains basic studies on characteristics of coal char gasification under pressure. Hydro-gasification of coal needs as a gasifying agent a large amount of hydrogen, which is effectively produced by the water gasification of exhaust unreacted residual char. In fiscal 1975, gasification was tested on Taiheiyo coal carbonized char by an atmospheric fluidized gasifier of 28 mm bore. In fiscal 1976, experiment was conducted under pressure by fully improving the auxiliary safety equipment. The char and gas yield increased with higher pressure in pressurized carbonization by an autoclave. In fiscal 1977, clinker was successfully prevented by using quartz sand for a fluidized medium. In fiscal 1978, two-stage continuous gasification was examined. In fiscal 1979, correlation was determined between operation factors such as gasification pressure, temperature, etc., and clinker formation/char reactivity. An experiment was conducted for particle pop-out using a pressurized fluidized bed of 100 mm inner diameter, with the pop-out quantity found to be proportional to the 0.38th power of a pressure. A high pressure fluidized gasifier was built having a char processing capacity of 1 t/day, 20 atmospheric pressure, and an inner diameter of 100 mm. In fiscal 1980, this device was continuously operated, elucidating problems for the practicability. (NEDO)}
place = {Japan}
year = {1981}
month = {Mar}
}