[Gasification] Researching Charcoal gasifier power plants

[Peter Singfield]

Hey -- that was real fast -- got to copies sent to me -- one from I.M. Juan
Daniel Martínez Ángel (Columbia) and another copy from Ken Boak (England)!!

Thanks guys!!

There are a few days of study involved in that paper -- very detailed.

"hybrid biomass-charcoal gasifier"

I appears as a two stave gasifier -- all on one unit -- partly fueled with
coconut shell and partly fueled with coconut shell charcoal.

A very well detailed gas cleaning regimen is included.

This all just from a real fast scanning it over.

General starting proposition:

In recent years,multi-stage gasi cation has emerged
as a possible approach to low tar content gas produc-
tion.A two-stage straw gasi cation process is being
developed in the Technical University of Denmark
(DTH).The process separates volatiles and charcoal
produced from straw in an externally heated pyroly-
sis reactor.The volatiles are next partially combusted
and the combustion products are used for gasifying
charcoal from the pyrolysis reactor.The produced gas
from the gasi er has been reported to be so clean that
it could be used to fuel an engine after cooling and
separating the soot and ash particles [10 ].

and Detailed presented version:

Hybrid biomass–charcoal gasifier

A hybrid biomass–charcoal gasifier in which air
was supplied in three stages was designed,fabricated
and tested for internal combustion engine applica-
tion as shown in Fig.1.It was designed in such a
way that charcoal gasification is expected to start
at the end of multi-stage biomass (coconut shell)
gasification.

Peter / Belize


**************************************
Found this -- can anyone get the complete "paper" and send that to me??

http://www.serd.ait.ac.th/teenet/hybrid%20gasifier-engine%20system.htm

A Study on Multi-Stage Hybrid Gasifier-Engine System

S. C. Bhattacharya, San Shwe Hla, and Hoang-Luang Pham

Biomass and Bio-Energy, 2001, Vol. 21, pp. 445-460

 

This paper presents the results of a study on a multi-stage hybrid
biomass-charcoal gasification to produce low tar content gas for engine
application using coconut shell as a fuel. The performance of a
gasifier-engine system consisting of the hybrid biomass-charcoal gasifier,
a gas cleaning/cooling system and diesel engine is also discussed. The
lowest tar content found in hybrid coconut shell-charcoal gasification was
28 mg Nm-3. Using a spray tower, producer gas could be cooled down to 40o
C; almost tar-free gas was obtained after cooling the producer gas from the
hybrid gasifier system. A three-cylinder Perkins diesel engine was tested
at a constant speed of 1500 rpm on diesel alone and dual fuel modes of
operation. A maximum of 81% of the total heat energy input was replaced by
the producer gas at an electricity generation of 11.44 kWe. 

******************and more of interest*************

This is old news for some -- but well presented again at:

http://www.hotel.ymex.net/~s-20222/gengas/kg_eng.html

The making of the Källe-gasifier
By Torsten Källe

January/February 1942
(Translation to English 2000, Joacim Persson <joacim at ymex.net>) 


Peter / Belize