Biogas purification: membrane separation skills
膜别离技能，被认为是21世纪工业技能改造中的一项极为重要的技能。跟着功能优异的新式膜材料不断涌现，进一步开宣布用于沼气脱碳的低成本膜别离技能，将有助于引荐生物燃气工业的开展。
Membrane separation skills are considered to be an extremely important skill in the transformation of industrial skills in twenty-first Century. With the continuous emergence of new membrane materials with excellent functions, further announcement of high-efficiency and low-cost membrane separation skills for biogas decarbonization will be helpful to introduce the development of biogas industry.
沼气膜别离是指在压力差为推动力的效果下，利用沼气中各组分在气体别离膜中浸透速率的不同而到达别离纯化CH4的意图。
Biogas membrane separation refers to the intention of separating and purifying CH4 by utilizing the different permeation rates of each component in biogas membrane under the effect of pressure difference as a driving force.
当无液态水、无油的紧缩沼气沿中空纤维管内腔活动时，各种气体的分压在中空纤维丝管的高压侧（质料侧）与低压侧（浸透侧）所形成的驱动力——分压差效果下，溶解系数和扩散系数大的气体（如CO2）优先经过管壁，其他气体（CH4）相对受到阻隔，从而到达别离的意图。
When the compressed methane without liquid water and oil moves along the inner cavity of hollow fiber tube, the partial pressure of various gases is the driving force formed by the high pressure side (material side) and low pressure side (immersion side) of hollow fiber tube. Under the effect of partial pressure difference, the gases with large dissolution coefficient and diffusion coefficient (such as CO2) pass through the tube wall first, and other gases with large diffusion coefficient (such as CO2) pass through the tube wall first. Gas (CH4) is relatively obstructing, thus reaching the intention of leaving.



现在适用于沼气提纯的膜是聚酰胺膜和EC膜，国内外已有很多沼气工程运用膜法提出技能，推行及运用较为广泛的有美国麦道（Medal）、荷兰DMT公司、德国Evonik、挪威Memfoact和日本宇部（UBE）。
The most suitable biogas purification membranes are polyamide membranes and EC membranes. There are many biogas projects at home and abroad that use membrane technology to propose skills. Medal, DMT, Evonik, Memfoact, Norway and UBE are widely applied.
膜法别离的特色：
Characteristics of membrane separation:
除电耗外，无额定辅助材料，没有二次污染；
In addition to electricity consumption, there is no rated auxiliary material, and there is no two pollution.
工艺流程简略、可靠性高；
The process is simple and reliable.
出资及运行费用低；
The cost of capital contribution and operation is low.
占地面积小、开泊车简略、运用寿命长；
The utility model has the advantages of small space occupation, simple parking and long service life.
产品CH4纯度可达≥95%；
The purity of the product CH4 can reach more than 95%.
装置快速简略。
The device is fast and simple.
特别适合中小规划的生物燃气工程项目。
It is especially suitable for bio gas projects in small and medium-sized planning.
综上所述有山东恒能环保能源设备有限公司提供，想了解更多沼气提纯知识，欢迎关注我们的网站：http://www.hneee.net谢谢支持！
In summary, all the above-mentioned Shandong Heneng Environmental Protection Energy Equipment Co., Ltd. provides, want to know more about biogas purification knowledge, welcome to pay attention to our website: https://www.hneee.net Thank you for your support!