Experimental investigations of long stick wood gasification in a bottom lit updraft fixed bed gasifier
A. A. Saravanakumar, Spray Engineering Devices Limited, Noida, Uttar Pradesh, India, July 17, 2008
Long Stick Reactor

Based on the experience of the gasifier users on the efforts and energy for wood chip preparation in a typical gasifier, we have embarked on the development of a gasifier suitable to work with long stick woody biomass as the feed materials. In the context of the impact of gasifiers, as decentralized energy delivery devices such an approach, it is hoped, would be an attractive option in rural areas both in domestic and industrial sectors. In the present paper in the gasifier operation, there is a fixed quantity of char that is combusted to gasify a fixed amount of wood, and the gasifier does not operate in a steady state manner. In this present work, focus is made on the development of a gasifier using long sticks of wood as feed materials. With this concept, a 10 kW thermal output power gasifier is designed and constructed. The gas and airflows can be converted to the air/fuel ratio, the most important aspect of gasifier operation. The air/fuel ratio shows operation in a combustion mode at start up, a gasification mode for the middle part of the run and a charcoal gasification mode at the end of the run. Since the interest here is exploring and validating of this concept, a bottom lit updraft gasifier is designed mainly to look at the gas yield and other favourable factors and to use this gas so obtained for thermal applications. The rate of feed was between 9 and 10 kg/h and continuous operation for 5 h was made in a couple of runs to study the performance. In this paper we report the salient features of our efforts and results, yielding a gasifier efficiency of 73%.

Long Sticks

Flames

Rice Husk Gasifier Links
Tom Miles, March 6, 2008

Following are some links for Rice Husk Gasifiers

Philippines
Rice Biomass for Agriculture & Industry in the Philippines & ASEAN Bernardo D. Tadeo PhD PhilRice, Philippines (Pdf) Dec 14, 2005

Japan
R&D of Carbonizing Gasification of Biomass Wastes Kazuyoshi Ichikawa, Central Research Institute of Electric Power Industry, March 2007

Specification and Production: Technologies of Bio--Fuels in Japan Kinya Sakanishi Biomass Technology Research Biomass Center(BTRC Center(BTRC),),AIST, Hiroshima 737AIST, 737--0197, Japan0197, Japan““

India

Design Parameters for a Rice Husk Throatless Gasifier Reactor Anil Kr Jain School of Energy Studies for Agriculture, PAU. Ludhiana, 141 004 (INDIA).2006

Myanmar

Electrical Industry of Burma/Myanmar, Online Compendium

China
Study on performance of biomass gasifier-engine systems and their environmental aspects, Zhang Baozhao, Xu Yicheng
China National Rice Research Institute, Hangzhou, 310006, China, FAO Paper No.9403

- 160 kWe Yingkhou “Gasification of Agro-Industrial Residues for Electricity Production” in the Peoples Republic of China ENEA, IT, 2006

Indonesia

Biomass Gasification In Indonesia IEA Dresden, June 2006
Biomass for Electricity Generation: Comments on the Background Paper Directorate General of Electricity and Energy Utilization, Republic of Indonesia, 2007
- 100 kWe pilot. The project was stopped last year (2006) because problems from the tar could not be solved completely. Tar gives a negative effect to the environment and diesel engine as well.(Contact information, website link for full information.)PT. Indonesia Power, Jl.Gatot Subroto, Jakarta Selatan Indonesia. Tel. 62-21-5267666. www.indonesiapower.co.id

Crorey Alternative Fuels Biomass Gasifier Systems
January 8, 2008

"Manufactured Gas In The Home", a historic document (1925) digitally remastered by Puffergas. The author, Samuel Wyer, wrights about distribution, economics, correct gas use, consumers and more.

To read this historic document click on the below link:
Manufacture Gas In The Home

Charcoal Gasifier No. 4: Operating the Charcoal Gasiifer
Doug Williams, Fluidyne, New Zealand, August 13, 2007

Hi Gasification Colleagues,

Charcoal Gasifier No. 3
Doug Williams, Fluidyne, New Zealand, July 28, 2007

Hi Gasification Colleagues,

It is clear from the private mail coming to me, that charcoal gasification has created an interest that allows many to now enter these discussions. While my emphasis is to try and make it understandable for beginners, it should also stimulate those more advanced to test what I say against their own experiences,( such as Ken Calvert has provided). His real DIY experiences show that you can get going if you have some help to start. I really do not like to ignore or delete mail asking questions, but please wait until the end of these informal lessons, to initiate questions and answers. If we do it that way, anyone in future can find all the discussion under the common Subject title, so please do not contaminate the title by using it to discuss other topics.

Biomass Gasification Using Solar Thermal Energy (pdf)
M. Munzinger and K. Lovegrove, Solar Thermal Group, Department of Engineering, Australian National University, Canberra ACT 0200, AUSTRALIA, ANZES 2006
Courtesy of Peter Singfield July 2007

Hydrogen from Biomass as an energy carrier has generated increasing interest in recent years. There are several different technologies to convert solid or liquid Biomass into a gas mix consisting of mainly hydrogen and carbon dioxide. Up to 30% of the energy stored in the product gas would originate from the sun by using solar thermal applications to source the conversion while the equivalent of 30% of the product gas would have to be burned using conventional approaches. This paper explains the principles of the main technical pathways for biomass gasification and shows their advantages and disadvantages especially in connection with the use of solar heat as energy source for the conversion reaction. Biomass gasification in supercritical water appears to be a simple and efficient and thus most convenient approach for solar thermal applications.

Charcoal Gasifier No 2
Doug Williams, Fluidyne, July 24, 2007

Hi Gasification Colleagues,

While charcoal gasifiers are as simple as desperation determines, the choices as to how they are designed is very much a factor of applied knowledge, using the materials that might be available. In the main, we will only be using components made of steel, and using basic welding equipment for assembly.

What is not discussed in literature on the subject of gasifier design, is the philosophy behind the design, and the phenomena created by that design. It is very clear that far to many people are locked into a mind set of chemical equations, and mathematical calculations before first being able to creating the correct phenomena to achieve the desired results.

Charcoal Gasifier No 1.
Doug Williams, Fluidyne, July 21, 2007

Hi Gasification Colleagues,

Back in June, I promised to give you some basic lessons on how to make a charcoal gasifier, and to explain some terminology. This is for those who understand nothing about gasification in a practical sense, so should kick start those with less ability or resources. It does not cover gasifiers that use raw biomass.

Gasification comes to Chile
Doug Williams and Douglas Diaz, Chile June 7, 2007
Douglas Diaz, and myself on completion of a very enjoyable and successful day of exposing invited guests to experience gasification from a commercial perspective.