Physical and Chemical Geotechnologies

Purpose

Consumption of energy resources in the nearest time will provoke their rapid rise, accompanied by their gradual exhaustion. This situation requires a search of internal reserves based on renewable energy. Energy crisis prompts European countries for searching an alternative source of renewable energy. Important part of those efforts is conducting of integration research and development of road maps for sustainable energy use for whole continents. That is why the primary purpose of current research is to try find solution in diversification of energy resources.

Methodology

Using analytical approach were determined that the share of renewable energy in the global energy production today make up 13% of these 77% accounts for bioenergy main raw material which is wood biomass (87%) and the share in renewable energy according to the World Energy Recources (Survey of energy resources) for 2013 was 11%, at that according to optimistic indicators for 2020 it should make 22%.

Findings

There are many bioenergy routes which can be used to convert raw biomass feedstock into a final energy product. Several conversion technologies have been developed that are adapted to the different physical nature and chemical composition of the feedstock, and to the energy service required (heat, power, transport fuel). Upgrading technologies for biomass feedstocks (e.g. pelletisation, torrefaction and pyrolysis) are being developed to convert bulky raw biomass into denser and more practical energy carriers for more efficient transport, storage and convenient use in subsequent conversion processes

Combination the technology of borehole underground coal gasification with biomass gasification that is proposed to consider is quite promising direction of alternative energy development. Firstly it will reduce the capacity cost including expensive equipment of surface biomass gasification, as all thermo-chemical processes take place in underground gasifier at the same time in his place of occurrence. Secondly it allow to resolve the issue of environmental and ecological cleanliness of the process, as underground coal gasification technology developed on a new level in a closed environment-friendly cycle.

In order to carry out of biomass gasification technology combined with coal seam gasification it is only necessary to make some adjustments in the existing technological schemes. Fragments of biomass are injected into the gasifier along a controlled pipeline in the reaction channel, where it will convert to combustible gases. It will allow not only get more energy, but also solve the problem of organic waste utilization in some regions of Ukraine.

Keywords: gasification, energy resources, feedstock, gasifier, biomass

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