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Survey on development of brown coal liquefaction techniques; Kattan ekika gijutsu ni kansuru chosa

Abstract

Described herein are results of literature survey on brown coal liquefaction reactions and elementary techniques. Liquefaction of brown coal in the presence of CO and steam, or CO, H{sub 2} and steam has been investigated. It is not clear by the literature survey whether it is superior to the normal process which uses hydrogen. Brown coal contains moisture at high contents, and the drying techniques are necessary to be developed for its liquefaction. The future coal liquefaction plant will be much larger than the past one, and there are a number of problems to be solved, such as those involved in the designs of large-sized high-pressure slurry pumps, heat exchangers and preheaters. It is also necessary to develop the materials of and production techniques for large reactors which are serviceable under severe conditions. The solid-liquid separation for liquefaction products involves a number of the elementary techniques characteristic of coal liquefaction processes, and needs many technological developments. The one-stage brown coal liquefaction process is compared with the two-stage process for the secondary hydrogenation of SCR, but no clear conclusions are reached. (NEDO)
Authors:
"NONE"
Publication Date:
Sep 01, 1980
Product Type:
Technical Report
Report Number:
JP-NEDO-010017578
Resource Relation:
Other Information: PBD: Sep 1980
Subject:
01 COAL, LIGNITE, AND PEAT; SUNSHINE PROJECT; BROWN COAL; COAL LIQUEFACTION; CARBON NITRIDES; STEAM; HYDROGEN; DEWATERING EQUIPMENT; SLURRIES; PUMPS; SEPARATION EQUIPMENT
OSTI ID:
20123627
Research Organizations:
New Energy and Industrial Technology Development Organization, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JN0040739
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20123627
Submitting Site:
NEDO
Size:
218 pages
Announcement Date:

Citation Formats

Survey on development of brown coal liquefaction techniques; Kattan ekika gijutsu ni kansuru chosa. Japan: N. p., 1980. Web.
Survey on development of brown coal liquefaction techniques; Kattan ekika gijutsu ni kansuru chosa. Japan.
1980. "Survey on development of brown coal liquefaction techniques; Kattan ekika gijutsu ni kansuru chosa." Japan.
@misc{etde_20123627,
title = {Survey on development of brown coal liquefaction techniques; Kattan ekika gijutsu ni kansuru chosa}
abstractNote = {Described herein are results of literature survey on brown coal liquefaction reactions and elementary techniques. Liquefaction of brown coal in the presence of CO and steam, or CO, H{sub 2} and steam has been investigated. It is not clear by the literature survey whether it is superior to the normal process which uses hydrogen. Brown coal contains moisture at high contents, and the drying techniques are necessary to be developed for its liquefaction. The future coal liquefaction plant will be much larger than the past one, and there are a number of problems to be solved, such as those involved in the designs of large-sized high-pressure slurry pumps, heat exchangers and preheaters. It is also necessary to develop the materials of and production techniques for large reactors which are serviceable under severe conditions. The solid-liquid separation for liquefaction products involves a number of the elementary techniques characteristic of coal liquefaction processes, and needs many technological developments. The one-stage brown coal liquefaction process is compared with the two-stage process for the secondary hydrogenation of SCR, but no clear conclusions are reached. (NEDO)}
place = {Japan}
year = {1980}
month = {Sep}
}