广东省沼气资源潜力与养殖场沼气工程效益分析

文章介绍了广东省养殖场的沼气工艺流程,并利用广东省2017年统计年鉴的数据,评估计算了生猪、奶牛、肉牛、羊和鸡的粪尿量及其潜在的沼气资源量.评估结果表明:2016年广东省沼气资源量为24.37亿m3,若按沼气中含有50％的甲烷气体计,则折合甲烷12.19亿m3,约占广东省同年天然气消费量的7.3％.文章以广州市花都区大...

Analysis of biogas potential and benefits of farm biogas project in Guangdong Province

This paper introduced the flow chart for production of biogas in Guangdong Province,and evaluated the fecal and urine volume of pigs,cows,beef cattle,sheep and chickens and their potential biogas using data from the Statistical Yearbook of Guangdong Province in 2017.The result shows that the biogas resources of Guangdong Province is 2.437 billion m³ in 2016,which is equivalent to 1.219 billion m³ of methane according to biogas containing 50%methane gas,and accounting for 7.3%of natural gas consumption in Guangdong Province in the same year.Taking Dafu farm in Huadu District of Guangzhou as a case,the paper evaluated the annual emission reduction of greenhouse gas through the clean development mechanism,and calculated the profitability of the project by using the cost-benefit method and various financial indicators.The annual greenhouse gas emission reduction of the biogas project is 2219.49 t,the financial net present value is 394200 yuan,the dynamic investment payback period is 8.92 years,the financial internal rate of return is 15%,which is higher than the benchmark rate of return of 10%.The indicators show that the biogas project has significant economic benefits,but the payback period is a little longer.