Ikelic - Alliance Digital Repository

STATUS OF COAL PROJECTS (Underline denotes changes since June 1994)
COMMERCIAL AND R&D PROJECTS (Continued)
IPDU Project Cost: $4.5 million
- CHEMICALS FROM COAL Tennessee
Eastman Division (C-120)
Tennessee Eastman Division, a manufacturing unit of Eastman Chemical Company, operates its chemicals from coal complex
at Kingsport, Tennessee at the design rate of 1,100 short tons per day. The Texaco coal gasification process is used to produce
the synthesis gas for manufacture of 1.2 billion pounds per year of acetic anhydride. Methyl alcohol and methyl acetate are
produced as intermediate chemicals, and sulfur is recovered and sold.
The completion of a $200 million expansion program in October 1991 added two new chemical plants to the original complex,
doubling its output of acetyl chemicals from coal.
Project Cost: Unavailable
CHINA ASH AGGLOMERATING - GASIFIER PROJECT The
Institute of Coal Chemistry, China (C-123)
The Institute of Coal Chemistry (ICC) of the Chinese Academy of Sciences is developing an ash agglomerating coal gasification
process. The process is applicable to a wide range of coals including those with high ash content and high ash fusion tempera
ture.
In 1983, a small scale pilot gasifier, or PDU, was set up. At first, different coals were gasified with air/steam as gasifying agents
to make low heating value gas for industry. Later, coals were gasified with oxygen/steam to make synthetic gas for chemical
synthesis. A pilot scale gasification system of 24 tons per day coal throughput was scheduled for startup in late 1990.
The gasifier is a cylindrical column of 0.3 meter inside diameter with a conical gas distributor and central jet tube on the bot
tom. The enlarged upper section is 0.45 meter inside diameter in order to settle out the gas-entrained coarse particles. The to
tal height of the gasifier is about 7.5 meters.
Predried coal is blown into the gasifier after passing through the lockhopper and weighing system. Preheated air/steam (or
oxygen/steam) enters the gasifier separately through a gas distributor and central jet tube. The coal particles are mixed with
hot bed materials and decomposed to gas and char. Because of the central jet, there is high temperature zone in the dense bed
in which the ash is agglomerated into larger and heavier particles. The product gas passes through two cyclones in series to
separate the entrained fine particles. Then the gas is scrubbed and collected particles are recycled into the gasifier through
standpipes. The fines recycle and ash agglomeration make the process efficiency very high.
Based on the PDU data and cold model data, a 1 meter inside diameter gasifier system was designed and constructed. It is to
be operated at atmospheric pressure to 0.5 MPa with a coal feed rate of 1 ton per hour.
CHINA ONE CLEAN COAL PROJECT- SGI International and Mitsubishi Heavy Industries (MHn (C-125^1
SGI and MHI are proceeding with an engineering and economic feasibility study to construct a clean coal refinery in Longku
Harbor, Shandong Province. China. It is expected that the Comprehensive Utilization Corporation of Shandong Coal Industry
will become a partner and arrange for the shipment of 500 kg of Liangjia Mine coal, located near Longku Harbor, to the U.S.
for large-scale testing.
The refinery would use the LFC Technology, currently being demonstrated at the ENCOAL project, near Laramie. Wyoming.
The planned operations include processing 6.000 metric tonnes of Liangjia coal per day for a projected annual production of
more than one million tons of low-sulfur PDF coal and 1.5 million barrels of CDL oil.
The feasibility study is expected to be completed in mid-1995; if the study is favorable, construction of the China One Clean
Coal Refinery would be started shortly.
CIGAS GASIFICATION PROCESS PROJECT - Fundacao
de Ciencia e Tecnologia-CIENTEC (C-130)
The CIGAS Process for the generation of medium BTU gas is aimed at efficient technological alternatives suitable for
Brazilian mineral coals of high ash content. No gasification techniques are known to be available and commercially tested for
Brazilian coals.
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SYNTHETIC FUELS REPORT. JANUARY 1995