『Abstract
Biogas production is an important aspect of China's energy strategy.
After decades' application and research, China biogas has achieved
considerable accomplishments. This study presents the progress
and prospect of biogas technologies and industry in China. Two
biogas patterns exist in China, that is, household-scaled digester
for scattered farmers and biogas plant for centralized biogas
production. Household-scaled digester which is simple and practical
has been widely used and fully developed. Biogas plants have being
sprung up with different materials, process and biogas utilization
technologies. By the end of 2010, 38.51 million household-scaled
digesters, and 27,436 large- and medium-scaled biogas plants for
agricultural wastes were built. The calculation result of biogas
potential from agricultural wastes shows that those used raw materials
account for only 1.90% of the total availability. Chinese government
promulgated several laws and policies, and gave financial supports
to promote the development of biogas. However, some problems such
as inferior equipment technology, imperfect policy incentive hamper
its wide application and promotion. With the rapid development
of economy and the improvement of rural living condition, China
biogas industry is expected to advance toward orientation of scalization,
industrialization and commercialization.
Keywords: China; Household-scaled digester; Biogas plant』
1. Introduction
2. Plotting the progress of rural biogas technology in China
2.1. Household-scaled biogas technology
2.2. Biogas plant technology
2.2.1. Raw materials and process technologies
2.2.1.1. Biogas plants for livestock manure
2.2.1.2. Biogas plants for crop straws
2.2.1.3. Biogas plants for multiple materials
2.2.2. Biogas utilization technologies
2.2.2.1. Biogas for farmers' cooking
2.2.2.2. Biogas for power generation
2.2.2.3. Biogas for vehicle fuel
2.2.3. Integrative utilization technologies for biogas residues
and slurries
2.2.4. Standards for biogas
3. Developing progress of biogas industrialization
3.1. Biogas-plant industry
3.2. Biogas equipment industry
3.3. Biogas service industry
4. National financial and policy support
5. Current problems
6. Development potential and prospects of biogas in China
6.1. Potential for biogas development in China
6.2. Developing prospects of biogas in China
7. Conclusions
References