scholarly journals Generation of Woodgas and its Rational Use for Combined Power and Heat Production at Rural Enterprises

Author(s):  
V. Gulbis

During the last few years combined production of electricity and heat based on biomass gasification technology and on gas utilization in gas-fired engines has been widely reconsidered. This method is more sustainable and environmentally friendly provision of energy in the future. Latvia is rich in forests and the wood processing industry is developing very fast, giving about 4.5 mill. m3 of woods residue per year. The use of wood residue does not follow the increase of wood production. In Latvia we have abundant biomass resources such as wood harvesting and wood processing residues, waste wood and sawdust. As a first attempt to introduce biomass gasification technology in Latvia some researchers at the faculty of engineering of LUA are developing an integral small scale combined heat and power (CHP) system based on a used Russian-made diesel-alternator set with electrical output 100 kWe. The diesel is converted to dual fuel gas engine, using producer gas as the main fuel and gas oil as pilot fuel. To get sufficiently clean (tar content ? 250 mg/m3) woodgas for using in IC engine a downdraft type of gasifier was chosen designed and constructed on the “IMBERT” gasifier principles. The test runs of the first experimental model showed that the engine does not develop expected power because of high resistance of gasifier and gas cleaning system does not work sufficiently enough. There was rather high level of tar content in woodgas because the temperature in the reduction zone was to low. Calculations were carried out and a new technological scheme of gasification system was worked out, introducing innovative ideas aimed on improving the working parameters. The experiments and calculations showed that such a type of CHP plant could be a technologically and economically interesting option for small sawmills and farms in rural areas.

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Gbeminiyi M. Sobamowo ◽  
Sunday J. Ojolo

Nigeria has not been able to provide enough electric power to her about 200 million people. The last effort by the federal government to generate 6000 MW power by the end of 2009 failed. Even with the available less than 6000 MW of electricity generated in the country, only about 40% of the population have access to the electricity from the National Grid, out of which, urban centers have more than 80% accessibility while rural areas, which constitute about 70% of the total population, have less than 20% of accessibility to electricity. This paper addresses the possibility of meeting the energy demand in Nigeria through biomass gasification technology. The techno-economic analysis of biomass energy is demonstrated and the advantages of the biomass gasification technology are presented. Following the technical analysis, Nigeria is projected to have total potential of biomass of about 5.5 EJ in 2020 which has been forecast to increase to about 29.8 EJ by 2050. Based on a planned selling price of $0.727/kWh, the net present value of the project was found to be positive, the cost benefit ratio is greater than 1, and the payback period of the project is 10.14 years. These economic indicators established the economic viability of the project at the given cost. However, economic analysis shows a selling price of $0.727/kWh. Therefore, the capital investment cost, operation and maintenance cost, and fuel cost can be reduced through the development of the gasification system using local materials, purposeful and efficient plantation of biomass for the energy generation, giving out of financial incentives by the government to the investors, and locating the power plant very close to the source of feedstock generation.


Fuel ◽  
2013 ◽  
Vol 108 ◽  
pp. 409-416 ◽  
Author(s):  
Li Dong ◽  
Mohammad Asadullah ◽  
Shu Zhang ◽  
Xiao-Shan Wang ◽  
Hongwei Wu ◽  
...  

2019 ◽  
Vol 17 (3) ◽  
Author(s):  
Prakoso Bhairawa Putera ◽  
Wati Hermawati ◽  
Ishelina Rosaira Poerbosisworo

Biomass gasification in one of the modern technology that was developed by thermochemical conversion. This technology has been developed in many countries. This paper gives an emphasis on developments and trends in the use of gasification technology in some countries (Finland, Denmark, Thailand, Sri Lanka, Cambodia), and learning for Indonesia as well. At least there are five things that could be the key to the success of implementation, namely the ongoing and continuous research and development, the involvement of all actors in research and development activities, the implementation focuses on a small scale first, the roadmap plans into the action with a strong financial support, and the human resources support at national and local levels.Gasifikasi biomassa merupakan salah satu teknologi modern yang dikembangkan melalui konversi termo kimia. Teknologi ini telah banyak dikembangkan di berbagai negara. Makalah ini memberikan penekanan pada perkembangan dan kecenderungan penggunaan teknologi gasifikasi di beberapa negara (Finlandia, Denmark, Thailand, Sri Langka, Kamboja), dan pembelajaran bagi Indonesia. Setidaknya ada lima hal yang dapat menjadi kunci keberhasilan implementasi, yaitu riset dan pengembangan berkelanjutan dan berkesinambungan, pelibatan semua aktor dalam aktivitas riset dan pengembangan, implementasi pada skala kecil dahulu, perencanaan peta jalan hingga aksi dengan dukungan pendanaan yang kuat, dan dukungan sumber daya manusia di tingkat nasional dan lokal.Keywords: biomass gasification, technology trends,comparative study.


Author(s):  
M. A. Paisley ◽  
J. M. Irving ◽  
R. P. Overend

The Burlington Vermont gasifier is the first commercial scale demonstration of the FERCO indirectly heated biomass gasification process. The gasification plant is the largest operation of its type in the US and was the first process to integrate a biomass gasifier with a gas turbine during pilot operations at Battelle’s Columbus, OH facilities. The Burlington plant is coupled to the McNeil station of the Burlington Electric Department and is being used to evaluate and demonstrate the gasification technology both as a producer of fuel gas and in a combined cycle with a gas turbine power generation system. This paper discusses operating results at the Burlington site including gas cleanup / conditioning observations. Future Energy Resources, the owner of the gasification technology, is developing projects worldwide.


Author(s):  
K.A Babatunde ◽  
O.O Agbede ◽  
I.I Olateju ◽  
S.D Bamidele ◽  
O.M Osuolale ◽  
...  

Nigeria is blessed with abundant biomass throughout her six geo-political zones. However, biomass energy is largely used in the rural areas mainly for off grid purposes. The method of such biomass conversion is based on traditional combustion process which is grossly inefficient with attendance environmental implications. This paper addresses the use of gasification technology for the conversion of biomass to high value fuel. It presents biomass gasification as a solution to the menace of inadequate power generation, dependence on fossil fuel, greenhouse gas (GHG) emission and inappropriate disposal of wastes. The paper also highlights the need for focus to be shifted to other means of renewable energy in the country rather than hydropower and bioethanol on which the energy policy in the country is concentrated on.


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