In the 21st century, we are facing the depletion of energy such as oil, natural gas and coal. Biogas is a clean and renewable energy, which has been developed and popularized rapidly with its advantages of wide use, low price and easy access.

沼气是一种混合气体，主要成份是甲烷[CH4]，其余为二氧化碳[CO2]、氧气[O2]、氮气[N2]和硫化氢[H2S]，其中甲烷含量约为60％-80％，沼气的物理、化中性质主要成份是甲烷，甲烷是无色无臭的气体，分子式CH4，分子量为16.04，在OOC，101325Pa标准状态下，甲烷对空气的相对密度为0．5548，甲烷的热值35．9M／立方沼气低热值20-25MJ／立方。

Biogas is a mixed gas, mainly composed of methane [CH4], the rest of which are carbon dioxide [CO2], oxygen [O2], nitrogen [N2] and hydrogen sulfide [H2S], in which the content of methane is about 60% - 80%. The main component of biogas in physical and chemical properties is methane. Methane is a colorless and odorless gas, with sub formula CH4 and molecular weight of 16.04. Under OOC and 101325pa standard state, The relative density of methane to air is 0.5548, the calorific value of methane is 35.9m/m3, and the low calorific value of biogas is 20-25mj / m3.

yl6809永利对高含硫沼气进行厂研究，根据科学性物理性研制出了ZDE-01、ZDE-02、ZDE-03型常温氧化铁沼气精脱硫剂。主要是三氧气化二铁(Fe203]，含量为40％，并添加多种助剂，根据尖端科技技术制成，是一种适应性强的新型高效沼气精脱硫剂．具有硫容量大、脱硫精度高、适应性强等特点，是目前国内脱硫剂市场优质产品，长期以来深受新老用户的青睐。

Shandong hengneng environmental protection energy equipment Co., Ltd. studied the high sulfur biogas plant and developed zde-01, zde-02 and zde-03 fine desulfurizer for normal temperature iron oxide biogas according to scientific and physical properties. It is mainly ferric oxide (Fe203), with a content of 40%, and added with a variety of additives. It is made according to cutting-edge science and technology. It is a new type of high-efficiency biogas fine desulfurizer with strong adaptability. It has the characteristics of large sulfur capacity, high desulfurization precision and strong adaptability. It is a high-quality product in the domestic desulfurizer market and has been favored by new and old users for a long time.

沼气能源建设，一方面可以补充农村生产生活的能源需求；另一方面，可以减少工业生产中有机废水和生活垃圾对环境造成的危害。

Biogas energy construction can supplement the energy demand of rural production and life on the one hand; On the other hand, it can reduce the harm to the environment caused by organic wastewater and domestic waste in industrial production.

沼池中沼气可用于农户生活用能，农副产品生产、加工等方面；也可用于沼气发电，沼气燃料电池等方面。沼液用于肥料、饲料、生物农药、培养液料的生产。沼渣用于肥料、饲料的生产。

Biogas in biogas digesters can be used for household energy consumption, production and processing of agricultural and sideline products, etc; It can also be used in biogas power generation, biogas fuel cell and so on. Biogas slurry is used in the production of fertilizer, feed, biological pesticide and culture liquid. Biogas residue is used in the production of fertilizer and feed.

yl6809永利“沼气工程”中能量的多层次利用和物质的循环利用建立了以沼气为纽带的生态经济体系，实现了环境和经济的双赢，推动了循环经济可持续的发展。

The multi-level utilization of energy and recycling of materials in biogas desulfurization "biogas project" have established an ecological economic system linked by biogas, realized the win-win of environment and economy, and promoted the sustainable development of circular economy.