一、沼气发电介绍

　　1、 Introduction to Biogas Power Generation

　　1、沼气主要成份沼气是一种混合气体，它的主要成分是甲烷，其次有二氧化碳、硫化氢(H2S)、氮及其他一些成分。沼气的组成中，可燃成分包括甲烷、硫化氢、一氧化碳和重烃等气体；不可燃成分包括二氧化碳、氮和氨等气体。在沼气成分中甲烷含量为55%～70%、二氧化碳含量为28%～44%、硫化氢平均含量为0.034%。沼气依据其原料、生产过程等的不同, 其成分组成有很大的区别。

　　1. The main components of biogas are methane, followed by carbon dioxide, hydrogen sulfide (H2S), nitrogen, and other components. In the composition of biogas, combustible components include gases such as methane, hydrogen sulfide, carbon monoxide, and heavy hydrocarbons; Non combustible components include gases such as carbon dioxide, nitrogen, and ammonia. The methane content in biogas is 55% to 70%, the carbon dioxide content is 28% to 44%, and the average hydrogen sulfide content is 0.034%. The composition of biogas varies greatly depending on its raw materials, production process, and other factors.

　　2、沼气的燃烧特性甲烷燃点在650～750℃之间，且沼气中高浓度的二氧化碳对其有阻燃作用, 因此沼气发动机的改装过程中要尽量提高甲烷的燃烧速度。沼气中的硫化氢对发电设备有很强的腐蚀作用, 硫化氢含量高于0.1% 的沼气在用于发电时应严格脱硫。沼气在燃烧过程中空气的混入量对其燃烧特性有很大的影响。研究表明, 燃气组成变化时火焰及其动态变化与火焰的分层结构有强烈的依赖关系。在沼气中加入少量的氢气可以明显地改善沼气的燃烧性能。在沼气中加入少量的氢气( 5%、10%、15%, 以能量计), 并以此为燃料, 在一定速度下研究了不同的氢气比例对火花点燃式发动机的性能、排放、燃烧的影响。结果表明, 氢气的加入明显增加了沼气的燃烧率, 减少了沼气燃烧的限制, 在制动热效率和制动能量上有明显的改善，然而高于15%的氢含量并没有导致相对较高的燃烧。

　　2. The combustion characteristics of biogas are that the ignition point of methane is between 650 and 750 ℃, and the high concentration of carbon dioxide in biogas has a flame retardant effect on it. Therefore, during the modification process of biogas engines, the combustion rate of methane should be maximized. The hydrogen sulfide in biogas has a strong corrosive effect on power generation equipment, and biogas with a hydrogen sulfide content higher than 0.1% should be strictly desulfurized when used for power generation. The amount of air mixed in during the combustion process of biogas has a significant impact on its combustion characteristics. Research has shown that the flame and its dynamic changes are strongly dependent on the layered structure of the flame when the gas composition changes. Adding a small amount of hydrogen to biogas can significantly improve its combustion performance. A small amount of hydrogen (5%, 10%, 15% in terms of energy) was added to biogas as fuel, and the effects of different hydrogen ratios on the performance, emissions, and combustion of spark ignition engines were studied at a certain speed. The results showed that the addition of hydrogen significantly increased the combustion rate of biogas, reduced the limitations of biogas combustion, and improved the braking thermal efficiency and braking energy. However, hydrogen content above 15% did not lead to relatively high combustion.

　　3、沼气发酵工艺温度沼气产生于有机物质的厌氧发酵, 它是甲烷细菌的代谢产物. 产生沼气的先决条件除了缺氧以外, pH值应该在6.5和7.5之间, 温度应控制在一定范围。

　　3. The temperature of biogas fermentation process produces biogas through anaerobic fermentation of organic matter, which is a metabolic product of methane bacteria The prerequisite for producing biogas is not only hypoxia, but also a pH value between 6.5 and 7.5, and a temperature controlled within a certain range.

　　沼气池的温度条件分为:①常温发酵 (也称为低温发酵)10℃～30℃，在这个温度条件下，嗜低温菌的发酵期大约在90天至120天，产气率可为0.15～0.3 m3/m3.d。②中温发酵 30℃～45℃，在这个温度条件下，中温菌的发酵期大约25天至30天,池容产气率可达1m3/m3.d左右。③高温发酵 45℃～60℃，在这个温度条件下，嗜热菌的发酵期大约10天,池容产气率可达2～2.5 m3/m3.d。沼气发酵最经济的温度条件是35℃，即中温发酵。

　　The temperature conditions of biogas digesters are divided into: ① room temperature fermentation (also known as low-temperature fermentation) at 10 ℃ to 30 ℃. Under this temperature condition, the fermentation period of low-temperature bacteria is about 90 to 120 days, and the gas production rate can be 0.15 to 0.3 m3/m3/d. ② Medium temperature fermentation at 30 ℃ to 45 ℃, under this temperature condition, the fermentation period of medium temperature bacteria is about 25 to 30 days, and the gas production rate of the pool capacity can reach about 1m3/m3/d. ③ High temperature fermentation at 45 ℃~60 ℃, under this temperature condition, the fermentation period of thermophilic bacteria is about 10 days, and the gas production rate of the tank capacity can reach 2-2.5 m3/m3/d. The most economical temperature condition for biogas fermentation is 35 ℃, which is medium temperature fermentation.

　　4、工艺流程介绍以下通过禽畜粪沼气发电项目对沼气发电作针对性的介绍：禽畜粪沼气发电系统分为收集沉砂系统、厌氧反应系统、沼液储存系统、生物脱硫系统、发电系统五大部分。禽畜粪收集沉砂系统由集水池、水解沉砂池、切碎机、厌氧进料泵及各池搅拌提升泵等组成。厌氧反应系统是由厌氧进料泵将物料打入厌氧反应器，通过搅拌、循环进行充分的厌氧反应。再由热水罐提供的热水保证反应器温度适中，以获得稳定的厌氧反应和沼气输出。沼液储存系统包括沼液暂存池、固液分离机及沼液出水池等。沼液暂存池主要是收集沼气，固液分离机是将沼液暂存池中的固体分离送入肥料厂，液体进入沼液出水池中。生物脱硫系统包括脱硫塔、空压机、干燥机、循环水泵、储气柜等设备将系统中产生的沼气进行净化处理、储存以达到进入燃烧发电系统的要求。发电系统是将沼气通过内燃机、燃气轮机等其他燃烧机组产生动能带动发电机发电。

　　4. The following is a targeted introduction to biogas power generation through the livestock manure biogas power generation project: The livestock manure biogas power generation system is divided into five parts: collection and sedimentation system, anaerobic reaction system, biogas slurry storage system, biological desulfurization system, and power generation system. The livestock manure collection and sedimentation system consists of a collection tank, a hydrolysis sedimentation tank, a chopper, an anaerobic feed pump, and mixing and lifting pumps for each tank. The anaerobic reaction system is a process in which materials are pumped into an anaerobic reactor by an anaerobic feed pump, and undergo thorough anaerobic reactions through agitation and circulation. The hot water provided by the hot water tank ensures a moderate temperature in the reactor to achieve stable anaerobic reactions and biogas output. The biogas slurry storage system includes a biogas slurry temporary storage tank, a solid-liquid separator, and a biogas slurry effluent tank. The biogas slurry temporary storage tank is mainly used to collect biogas. The solid-liquid separator separates the solids in the biogas slurry temporary storage tank and sends them to the fertilizer plant, while the liquid enters the biogas slurry outlet tank. The biological desulfurization system includes desulfurization tower, air compressor, dryer, circulating water pump, gas storage tank and other equipment to purify and store the biogas generated in the system to meet the requirements for entering the combustion power generation system. The power generation system generates kinetic energy from biogas through other combustion units such as internal combustion engines and gas turbines to drive the generator to generate electricity.

　　5、沼气发电机组装置大功率沼气发电机组是沼气工业化利用的关键设备。在我国，有全部使用沼气的单燃料沼气发电机组及部分使用沼气的双燃料沼气-柴油发电机组。?单燃料沼气发电机组工作原理及优点：?将“空气沼气”的混合物放在气缸内压缩，用火花塞使其燃烧，通过火花塞的往复运动得到动力，然后连接发电机发电。?优点：①不需要辅助燃料油及其供给设备；②燃料为一个系统，在控制方面比可烧两种燃料的发电机组简单；③发电机组价格较低。?双燃料沼气-柴油发电机组工作原理及优点：?将“空气燃烧气体”的混合物放在气缸内压缩，用点火燃料使其燃烧，通过火花塞的往复运动得到动力，然后连接发电机发电。?优点：①用液体燃料或气体燃料都可工作；②对沼气的产量和甲烷浓度的变化能够适应；③如由用气体燃料转为用柴油燃料，在停止工作后，发电机组内不残留未燃烧的气体。?缺点：①工作受到供给的沼气的数量和质量的影响；②用气体燃料工作时也需要添加液体辅助燃料供给设备；③控制机构稍复杂；④价格较单燃料式发电机组稍高。

　　5. The high-power biogas generator set is a key equipment for the industrial utilization of biogas. In China, there are single fuel biogas generator sets that all use biogas and some dual fuel biogas diesel generator sets that use biogas. Working principle and advantages of a single fuel biogas generator set: The mixture of "air biogas" is compressed in a cylinder, burned with a spark plug, and powered by the reciprocating motion of the spark plug, and then connected to a generator to generate electricity. Advantages: ① No need for auxiliary fuel oil and its supply equipment; ② Fuel is a system that is simpler to control than a generator set that can burn two types of fuel; ③ The price of generator sets is relatively low. Working principle and advantages of dual fuel biogas diesel generator set: The mixture of "air combustion gas" is compressed in the cylinder, ignited with fuel, and powered by the reciprocating motion of the spark plug, and then connected to the generator to generate electricity. Advantages: ① It can work with both liquid and gas fuels; ② Capable of adapting to changes in biogas production and methane concentration; ③ If gas fuel is switched to diesel fuel, there will be no unburned gas remaining in the generator set after it stops working. Disadvantages: ① The work is affected by the quantity and quality of the supplied biogas; ② When working with gas fuel, it is also necessary to add liquid auxiliary fuel supply equipment; ③ The control mechanism is slightly complex; ④ The price is slightly higher than that of single fuel generator sets.

　　6、沼气发电效率一方气平均发电1.5～2kwh。发电效率：国产30%左右，进口38%-46%。单机功率：国产2000kw以下，进口10MW以下。进口机组的突出优点在于效率较高，单位沼气的发电效率高，但是投资成本和维护维修成本高。而国产机组近年来技术水平有很大提升，尤其是在对CH4浓度适应方面和每KW的造价方面都具有比较明显的优势，具有较好的性价比，但故障率相对高些，机组在线率相对较低。进口机组造价是国产机组的2-3倍。沼气品质会直接影响发电效率。积水导致了凝结水在管道的大量聚集，机组的可用率和发电功率大幅度下降；含尘量过高导致压力损耗过大，且机组内部缸体损耗严重；压力、温度等不符合机组要求，机组频繁跳机，可用率大幅下降且增加了维护检修成本。而经过改造后的气体预处理，机组的发电量增加了70%。所以，气体品质处理的效果如何，直接影响到最终的机组工作效率，从而影响收益。

　　6. The efficiency of biogas power generation is 1.5-2kWh per cubic meter of gas on average. Power generation efficiency: about 30% domestically produced, 38% -46% imported. Single machine power: below 2000kw domestically, below 10MW imported. The outstanding advantage of imported units is high efficiency, with a high power generation efficiency per unit of biogas, but high investment and maintenance costs. In recent years, the technological level of domestically produced units has greatly improved, especially in terms of adapting to CH4 concentration and cost per KW, which have obvious advantages and good cost-effectiveness. However, the failure rate is relatively high and the online rate of the units is relatively low. The cost of imported units is 2-3 times that of domestic units. The quality of biogas directly affects the efficiency of power generation. The accumulation of water caused a large amount of condensed water to accumulate in the pipeline, resulting in a significant decrease in the availability and power generation of the unit; Excessive dust content leads to excessive pressure loss, and the internal cylinder of the unit is severely damaged; The pressure, temperature, etc. do not meet the requirements of the unit, and the unit frequently trips, resulting in a significant decrease in availability and an increase in maintenance and repair costs. After the transformation of gas pretreatment, the power generation of the unit increased by 70%. So, the effectiveness of gas quality treatment directly affects the final efficiency of the unit, thereby affecting the revenue.

　　7、沼气发电机组装机容量决定因素沼气发电机组的装机大小（装机容量）取决于以下两个因素：一是沼气量，沼气量越大，装机容量就大；二是负载（这里指所有用电设备单位小时内耗电量）大小，特别是中小型的养殖规模受这个因素影响较大。

　　7. The determining factor for the assembly capacity of biogas generators is the installed size (installed capacity) of the biogas generator set, which depends on two factors: first, the amount of biogas, the larger the amount of biogas, the larger the installed capacity; The second factor is the size of the load (referring to the electricity consumption per unit hour of all electrical equipment), especially for small and medium-sized aquaculture scales, which are greatly affected by this factor.

　　8、沼气发电脱硫原因沼气里面的硫主要是以硫化氢(H2S)的形式存在，分子式为H2S，分子量为34.076，标准状况下是一种易燃的酸性气体，无色，低浓度时有臭鸡蛋气味，有剧毒。硫化氢是一种重要的化学原料。硫化氢气体在沼气发动机缸体里高温燃烧环境下，形成SO（硫氧）化物，对发动机的缸体、活塞、缸套等有腐蚀性，严重影响沼气发动机的使用寿命。所以不仅仅沼气发电需要脱硫，其实生活用气也要脱硫，只是脱硫要求没有那么高，如果不脱硫对灶具破坏比较大。

　　8. The reason for desulfurization in biogas power generation is that the sulfur in biogas mainly exists in the form of hydrogen sulfide (H2S), with a molecular formula of H2S and a molecular weight of 34.076. Under standard conditions, it is a flammable acidic gas, colorless, and has a strong egg odor at low concentrations. It is highly toxic. Hydrogen sulfide is an important chemical raw material. Hydrogen sulfide gas forms sulfur oxides (SOs) in the high-temperature combustion environment of biogas engine cylinders, which are corrosive to the cylinder body, piston, cylinder liner, etc. of the engine, seriously affecting the service life of biogas engines. So not only does biogas power generation require desulfurization, but domestic gas also needs desulfurization, although the desulfurization requirements are not as high. If desulfurization is not carried out, it will cause significant damage to the stove.

　　9、沼气发电辅助设备沼气发电需要具备沼气池、输气管道、储气柜（袋）、沼气脱硫脱水，如果压力不够还要增加一套防腐防爆增压设备，最后是沼气发电机组。如果要用到并网的话，还需一套并网柜。

　　9. Biogas power generation auxiliary equipment requires biogas digesters, gas transmission pipelines, gas storage tanks (bags), biogas desulfurization and dehydration. If the pressure is not enough, a set of anti-corrosion and explosion-proof boosting equipment should be added, and finally, a biogas generator set. If grid connection is required, a set of grid connected cabinets is also needed.

　　10、沼气发电机组余热回收沼气发电机组在发电过程中，烟气温度达到500度左右，发动机里的缸套水也有80度左右，可通过板式热交换器把里面的热量交换出来，如果量大可以给我们供暖气，如果量小可以供我们生活用水。同时，余热也可以作为作为沼气发生器的加温热源。

　　10. Waste heat recovery of biogas generator set During the power generation process, the flue gas temperature reaches about 500 degrees, and the cylinder liner water in the engine is also about 80 degrees. The heat inside can be exchanged through a plate heat exchanger. If the amount is large, it can provide us with heating, and if the amount is small, it can provide us with domestic water. Meanwhile, waste heat can also serve as a heating source for biogas generators.

　　二、沼气发电障碍1、成本障碍燃料供应不论在数量还是在成本控制上，均有较大的不确定性。由于饲养方式、饲养条件、饲料成分和配方、畜禽品种等的不同，牲畜的粪便产量差异很大。以50千克重的猪为例，每头每天的产粪量，低的仅有1.75千克，高的达到6千克。因此，若对特定养殖场（小区）的畜禽实际产粪量无充分把握时，最好进行实测。目前，全世界农业沼气工程最发达的德国，其95% 的沼气工程采用混合原料发酵，原料的保证度高。发酵原料中：47% 为能源作物（多为玉米青贮）、41%为畜禽粪便、10% 为有机废弃物、2% 为工农业生产加工废弃物。我国沼气工程的原料较为单一，原料保证度低。应加强对作物秸秆、有机蔬菜的烂菜叶、杂草、餐厨垃圾等沼气发酵原料的开发利用；另外，能源作物的青贮一般采用机收后沟壕式堆积加覆盖的方法、十分简便，投资很少，应成为今后解决原料短缺的重要途径。生产沼气的厌氧发酵过程，单一批次的物料投入后周期较长，一般来说都超过二十天，这种情况下，要形成一定的生产规模，就需要发酵设施的规模非常大，加上附属的沼气发电设施、物料运输和储存设施、环保治理设施、配电设施等等，项目整体的用地规模将比较大。

　　2、 Obstacle to biogas power generation: 1. Cost obstacle. Fuel supply has significant uncertainty in both quantity and cost control. Due to differences in feeding methods, feeding conditions, feed composition and formula, and livestock breeds, there are significant variations in the fecal production of livestock. Taking a pig weighing 50 kilograms as an example, the daily manure production of each pig ranges from 1.75 kilograms to 6 kilograms. Therefore, if there is insufficient confidence in the actual manure production of livestock and poultry in a specific breeding farm (community), it is best to conduct actual measurements. At present, Germany, which has the most developed agricultural biogas engineering in the world, uses mixed raw material fermentation for 95% of its biogas engineering, with high guarantee of raw materials. In the fermentation raw materials, 47% are energy crops (mostly corn silage), 41% are livestock manure, 10% are organic waste, and 2% are industrial and agricultural production and processing waste. The raw materials for biogas engineering in our country are relatively single, and the guarantee of raw materials is low. We should strengthen the development and utilization of biogas fermentation materials such as crop straw, organic vegetable leaves, weeds, and kitchen waste; In addition, the silage of energy crops is generally harvested by machines and then stacked and covered in trenches, which is very simple and requires little investment. It should become an important way to solve the shortage of raw materials in the future. The anaerobic fermentation process for producing biogas has a long cycle after a single batch of materials is input, generally exceeding 20 days. In this case, to form a certain production scale, a very large scale of fermentation facilities is required, along with ancillary biogas power generation facilities, material transportation and storage facilities, environmental protection treatment facilities, power distribution facilities, etc. The overall land use scale of the project will be relatively large.

　　2、技术障碍我国沼气发动机的开发研究主要集中在内燃机系列上，一般只是对柴油机和汽油机进行较浅层次的改装，对发动机的热工性能研究不深，由于产品质量不过关，在运行使用中出现诸多问题，给用户带来不便，从而影响其发展进程。导致这种情况的根本原因是没有对沼气发动机进行深入的研究，技术不过关，缺乏足够的生产实践。致使发动机在运行中产生热负荷高、可靠性差、起动困难；另外我国研制的全烧沼气发动机的排气温度过高，气阀易烧坏，使气缸盖等成为易损件等诸多技术问题。

　　2. The development and research of biogas engines in China mainly focus on the internal combustion engine series due to technical barriers. Generally, only superficial modifications are made to diesel and gasoline engines, and the thermal performance of the engines is not deeply studied. Due to poor product quality, many problems arise during operation and use, causing inconvenience to users and affecting their development process. The fundamental reason for this situation is the lack of in-depth research on biogas engines, inadequate technology, and insufficient production practice. Causing high thermal load, poor reliability, and difficulty in starting the engine during operation; In addition, the exhaust temperature of the fully burned biogas engine developed in our country is too high, and the valve is prone to burning out, making the cylinder head and other vulnerable parts and other technical problems.

　　3、市场障碍由于我国沼气发动机存在许多问题，先前应用国产发电机组的沼气发电工程有许多长期处于停机状态。这就使后来发展的绝大多数沼气工程放弃了沼气发电方式，转而寻求其他的利用途径。少数沼气发电工程(如天津、杭州等)依靠贷款引进购买较为成熟的国外发电机组设备来维持运行。我国生产厂家则由于技术不够成熟而造成买方市场的严重匮乏，沼气发动机和发电机组无法形成规模化批量生产，使科研生产单位缺乏相关的研究经费，没有对其作深入研究开发的积极性，不能提供质量过关的产品，进一步阻碍产品的市场化进程，对生产科研单位自身以及沼气发电领域的发展都不利。无明显优势企业，行业空间集中于设备、工程市场。从国内沼气工程使用沼气发电机组情况来看,国外和国内产品各占50%左右,国外产品在效率上优势明显,而国内产品在价格、售后服务方面优势突出。而沼气发酵、净化、存储设备制造相对简单,参与企业众多。整体而言,目前沼气发电设备、沼气发电运营并无优势企业,市场仍处于培育中。沼气发电市场的参与者主要有两类：发电设备制造商和发电运营商。发电运营商主要有河南百川畅银实业等,上市公司中桑德环境、东江环保等环保企业有所涉及,但该业务占比仍较小；而发电设备制造商主要有国外颜巴赫（GE）、卡特比勒、道依茨等，国内以胜动、石油济柴、潍柴动力三大沼气发电设备制造商为主，此外康达(康明斯)、潍坊伊达能、无锡柴油等企业也有生产。沼气发电市场不规范，没有相应的较为完善的行业标准，也不利于其商业化开发和利用。尽管没有沼气发电入网装机容量的门限，但由于各地条件不同，电网企业有时会对并网发电提出最小装机容量要求。绝大多数畜禽养殖场沼气工程规模都不大，以万头猪场为例，依据其沼气池产气量可配备50千瓦发电机组（按每天发电500千瓦时，工作时间10小时配备），但仍远低于一些地方电网企业的要求，所发电力不能入网销售，实现不了收益。即便发电能上网，由于发电成本偏高，大多数情况下，销售额加上电价补贴都不能与成本相抵。规模小了，发电也基本上不了网；规模大了，沼渣沼液的去向和处理处置成本又成问题。很多沼气工程处于“左右为难”的状态。

　　3. Market obstacles: Due to many problems with biogas engines in China, many biogas power generation projects that previously used domestically produced generators have been in a state of long-term shutdown. This led the vast majority of biogas projects that developed later to abandon biogas power generation and instead seek other ways of utilization. A few biogas power generation projects (such as Tianjin, Hangzhou, etc.) rely on loans to introduce and purchase mature foreign power generation equipment to maintain operation. Chinese manufacturers, on the other hand, suffer from a severe shortage of buyer's markets due to immature technology. Biogas engines and generator sets cannot be mass-produced on a large scale, resulting in a lack of research funding for scientific research and production units, a lack of enthusiasm for in-depth research and development, and an inability to provide high-quality products. This further hinders the marketization process of products and is detrimental to the development of production and research units as well as the field of biogas power generation. There are no obvious advantageous enterprises, and the industry space is concentrated in the equipment and engineering markets. From the use of biogas generators in domestic biogas projects, foreign and domestic products each account for about 50%. Foreign products have obvious advantages in efficiency, while domestic products have prominent advantages in price and after-sales service. The manufacturing of biogas fermentation, purification, and storage equipment is relatively simple, and there are many participating enterprises. Overall, there are currently no advantageous enterprises in biogas power generation equipment and operation, and the market is still under cultivation. There are mainly two types of participants in the biogas power generation market: power generation equipment manufacturers and power generation operators. The main power generation operators include Henan Baichuan Changyin Industry, among which listed companies such as Sande Environment and Dongjiang Environmental Protection are involved, but the proportion of this business is still relatively small; The main manufacturers of power generation equipment include foreign companies such as Yanbach (GE), Caterpillar, and Deutz. In China, the three major manufacturers of biogas power generation equipment are Shengdong, Petroleum Jichai, and Weichai Power. In addition, companies such as Cummins, Weifang Idaneng, and Wuxi Diesel also produce. The biogas power generation market is not standardized, and there are no corresponding relatively complete industry standards, which is also not conducive to its commercial development and utilization. Although there is no threshold for the installed capacity of biogas power generation connected to the grid, due to different conditions in various regions, power grid enterprises sometimes require a minimum installed capacity for grid connected power generation. The vast majority of livestock and poultry breeding farms have small-scale biogas projects. Taking a pig farm with ten thousand heads as an example, based on the gas production of its biogas digesters, a 50 kW generator set can be equipped (with a daily power generation of 500 kWh and a working time of 10 hours), but it is still far below the requirements of some local power grid enterprises, and the generated electricity cannot be sold on the grid, resulting in no revenue. Even if power generation can be connected to the grid, due to the high cost of power generation, in most cases, sales revenue plus electricity price subsidies cannot offset the cost. The scale is small, and the power generation is basically unable to connect to the grid; As the scale increases, the disposal cost of sludge and slurry becomes a problem again. Many biogas projects are in a dilemma.

　　制沼系统设备1、预处理：侧式搅拌机9台，螺旋除砂机5台，立式搅拌机4台，螺旋刮砂机3台，一级提升泵2台，二级提升泵2台，切割机+凸轮泵2套，污水泵2台2、厌氧反应器：底部侧搅拌机8+8共16台，顶部破壳机16台，立式搅拌机8台，内循环泵4台，出渣泵2台，沼气在线组分分析仪2台，厌氧反应器8座，沼气气体流量计9台3、生物脱硫：一套4、双膜储气柜：双膜储气柜1套，鼓风机2台及配套控制柜1套5、沼气增压：火炬一套，冷干机一套，罗茨风机3台，沼气气体流量计3台，电动阀门若干6、沼气锅炉：蒸汽锅炉及其配套设施2套，热储罐1座，冷水罐1座，热水循环泵4台，制软水设备一套7、PLC自动化控制系统一套，通风系统发电系统发电机4台，发电机控制柜4个，余热锅炉4套，变压器4套提纯压缩脱硫塔2座，冷却系统3件，控制系统3件，MCC、防爆电机3件，系统成撬3件，螺杆压缩机及机头总成3件有机肥固液分离机4套，沼气储存池7座公共设施厂区路灯，厂区供暖系统，厂区消防系统，厂区空调系统，厂区给排水系统，厂区监控系统，厂区道路

　　1. Pre treatment of biogas production system equipment: 9 side mixers, 5 spiral sand removal machines, 4 vertical mixers, 3 spiral sand scrapers, 2 first stage lifting pumps, 2 second stage lifting pumps, 2 cutting machines+cam pumps, 2 sewage pumps. 2. Anaerobic reactors: 16 bottom side mixers 8+8, 16 top shell breaking machines, 8 vertical mixers, 4 internal circulation pumps, 2 slag discharge pumps, 2 online biogas component analyzers, 8 anaerobic reactors, 9 biogas gas flow meters. 3. Biological desulfurization: 1 set. 4. Double membrane gas storage tank: 1 set of double membrane gas storage tank, 2 blowers and matching control cabinet. 5. Biogas boosting: one set of torch, one set of refrigerated dryer, three Roots blowers, three biogas gas flow meters, and several electric valves. 6. Biogas boiler: two sets of steam boilers and their supporting facilities, one hot storage tank, one cold water tank, and four hot water circulation pumps, One set of soft water equipment, one set of PLC automation control system, four generators for the ventilation system power generation system, four generator control cabinets, four sets of waste heat boilers, four sets of transformers, two purification and compression desulfurization towers, three cooling systems, and three control systems, MCC、 3 explosion-proof motors, 3 system components, 3 screw compressors and head assemblies, 4 sets of organic fertilizer solid-liquid separators, 7 biogas storage tanks, public facilities, factory street lights, factory heating system, factory fire protection system, factory air conditioning system, factory water supply and drainage system, factory monitoring system, factory roads