沼气发电是集环保和节能于一体的能源综合利用新技术，它利用工业、农业或城镇生活中的大量有机废弃物(例如：酒糟液、禽畜粪、城市垃圾和污水等)经厌氧发酵处理产生的沼气，驱动沼气发电机组发电，利用沼气发电对气体成分有的要求，气体中的杂质含量如Si、HS等应控制在的范围内，沼气的温度为10~60 ℃，压力为 0~5kpa ，一般禽畜粪厌氧处理的沼气都能满足发电的气质要求，污水处理沼气需要脱硫等处理，垃圾填埋沼气需要脱水等处理。

Biogas power generation is a new energy comprehensive utilization technology that integrates environmental protection and energy conservation. It uses a large amount of organic waste (such as distiller's grains, poultry manure, urban garbage, and sewage) from industrial, agricultural, or urban life to produce biogas through anaerobic fermentation treatment, driving the biogas generator set to generate electricity. The use of biogas power generation requires certain gas composition requirements, and the impurity content in the gas, such as Si and HS, should be controlled within a certain range. The temperature of biogas is 10-60 ℃ and the pressure is 0-5kpa. Generally, anaerobic treatment of poultry manure biogas can meet the gas quality requirements for power generation. Wastewater treatment biogas requires desulfurization and other treatments, while landfill biogas requires dehydration and other treatments.

沼气发电效率与气体中的甲烷浓度有关，理论上甲烷含量55%的沼气每立方沼气可发电1.8KWh，实际发电时，沼气浓度一般不能稳定在一个固定值上，在这种情况下，沼气发电机组照常可以运行，只是发电量会有所降低，发出的电量可进行上网，沼气发电机组的输出电压为400V，可以与6300V或10000V变压器低压端相联，若低压线路长，400V可以升压到6300V与*进线相连。

The efficiency of biogas power generation is related to the methane concentration in the gas. In theory, biogas with a methane content of 55% can generate 1.8KWh of electricity per cubic meter of biogas. However, in actual power generation, the biogas concentration generally cannot be stable at a fixed value. In this case, the biogas generator set can still operate, but the power generation will be reduced, and the generated electricity can be connected to the grid. The output voltage of the biogas generator set is 400V, which can be connected to the low-voltage end of the 6300V or 10000V transformer. If the low-voltage line is long, 400V can be boosted to 6300V and connected to the * incoming line.

许多打算做沼气发电的用户经常会问的一个问题就是，应该选择多大功率的发电机组合适，理论上甲烷含量55%的沼气每立方沼气可发电1.8KWh;一般沼气池每天的产气量是沼气池体总容积的20%左右(选用沼气池工艺不同，产气量不同)，具体的就要计算才能确定了。算出每天的沼气可发电的总量，然后再根据每天的发电时间，就可以确定发电机组的装机功率。

A common question that many users who plan to use biogas for power generation often ask is what power generation unit is suitable. In theory, biogas with a methane content of 55% can generate 1.8KWh of electricity per cubic meter; The daily gas production of a typical biogas digester is about 20% of the total volume of the digester (the gas production varies depending on the process used), and the specific amount needs to be calculated to determine. Calculate the total amount of biogas that can generate electricity every day, and then determine the installed power of the generator set based on the daily power generation time.

例如：

For example:

每天沼气总量500方，则发电总量：500×1.8=900度

If the total amount of biogas is 500 cubic meters per day, the total power generation is 500 × 1.8=900 kWh

若要24小时发电，则每小时发电量为900÷24=37.5

If 24-hour power generation is required, the hourly power generation will be 900 ÷ 24=37.5

养殖厂用沼气发电设备基本知识与设备选型

Basic knowledge and equipment selection of biogas power generation equipment for aquaculture plants

国产沼气发电机组一般以额定功率的80%运行，则是实际装机功率：37.5÷80%=46.87KW ，所以每天产气500方的沼气池，需要大于46.87KW的发电机组可以满足要求。

Domestic biogas generator sets generally operate at 80% of the rated power, and the actual installed power is 37.5 ÷ 80%=46.87KW. Therefore, for a biogas digester with a daily gas production of 500 cubic meters, a generator set larger than 46.87KW is required to meet the requirements.

1、滤清器保养：

1. Filter maintenance:

①空气滤清器：每运转50小时，以空压机口吹气清算一次。每运转500小时或当警示安装呈红色时改换，改换滤芯后按顶端按钮将指示重视定;

① Air filter: After every 50 hours of operation, blow air through the air compressor port to clean it. Replace the filter element every 500 hours of operation or when the warning installation turns red. After replacing the filter element, press the top button to indicate that it is important;

②机油滤清器：磨合期过后必需改换，以后每500小时或半年改换一次。改换滤清器后再开机运转10分钟，改换机油滤清器同时必需改换光滑油;

② Oil filter: It must be replaced after the running in period, and then every 500 hours or six months. After changing the filter, start the machine again and run for 10 minutes. When changing the oil filter, it is necessary to change the lubricating oil;

③柴油滤清器：磨合期过后必需改换，以后每500小时或半年改换一次。改换滤清器后再开机运转10分钟;

③ Diesel filter: It must be replaced after the running in period, and then every 500 hours or six months. After changing the filter, restart and run for 10 minutes;

④冷却液滤清器：运用200小时或三个月必需改换。以后每500小时或一年改换一次。

④ The coolant filter must be replaced after 200 hours or three months of use. Change every 500 hours or once a year in the future.

2、光滑油的改换

2. Replacement of smooth oil