Abstract
Crop straw gasification technologies are the most promising biomass gasification technologies and have great potential to be further developed in China. However, the commercialization development of gasification technology in China is slow. In this paper, the technical reliability and practicability of crop straw gasification technologies, the economic feasibility of gas supply stations, the economic feasibility of crop straw gasification equipment manufacture enterprises and the social acceptability of crop straw gasification technologies are analyzed. The results show that presently both the atmospheric oxidation gasification technology and the carbonization pyrolysis gasification technology in China are mature and practical, and can provide fuel gas for households. However, there are still a series of problems associated with these technologies that need to be solved for the commercialization development, such as the high tar and CO content of the fuel gas. The economic feasibility of the gas supply stations is different in China. Parts of gas supply stations are unprofitable due to high initial investment, the low fuel gas price and the small numbers of consumers. In addition, the commercialization development of crop straw gasification equipment manufacture enterprises is hindered for the low market demand for gasification equipment which is related to the fund support from the government. The acceptance of the crop straw gasification technologies from both the government and the farmers in China may be a driving force of further commercialization development of the gasification technologies. Then, the crop straw gasification technologies in China have reached at the stage of pre-commercialization. At this stage, the gasification technologies are basically mature and have met many requirements of commercialization, however, some incentives are needed to encourage their further development.
Highlights
As one of the major countries to produce grains, oil plants and cotton, China has abundant crop straw resources
Similar to the atmospheric oxidation gasification technology, the whole system developed by the Dalian Municipal Design and Research Institute of Environmental Science consists of three parts which are straw gasification machine, fuel gas distributing system and indoor appliances for households
Take the Xiwang gasification project in Xinxiang City of Henan Province as an example of the loss case. This gas supply station was built in 1999.The gas supply system using atmospheric oxidation gasification technology was used in this gasification station
Summary
As one of the major countries to produce grains, oil plants and cotton, China has abundant crop straw resources. The main approaches to crop straw utilization in China are rural energy resources, industrial raw materials, fertilizer and forage, accounting for 17.8%, 2.6%, 15.6% and 31.9% in 2010, respectively [1]. With the rural economic development and the increase of farmers’ income, more and more farmers want to use convenient commercial energy in China. The technology of crop straw gasification provides an effective way to offset the use of fossil fuels and mitigate air pollution, while making use of available presently unused straw resources in China. The commercialization of a technology is often seen as the final link in a development chain that starts in the laboratory and moves from a scientific research achievement to a product that is competitive in the marketplace generating increased productivity and improving the material and social circumstances of society. We analyzed the commercialization development of crop straw gasification technologies in China from four perspectives including the technical reliability and practicability of crop straw gasification technologies, the economic feasibility of gas supply stations, the economic feasibility of crop straw gasification equipment manufacture enterprises and social acceptability of crop straw gasification technologies
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