Biogas power generation is a biogas utilization technology that has emerged with the continuous development of large-scale biogas digesters and comprehensive utilization of biogas. It uses the biogas generated by anaerobic fermentation treatment on the engine and is equipped with a comprehensive power generation device to generate electricity and heat energy. Biogas power generation has the characteristics of efficiency creation, energy conservation, safety, and environmental protection, and is a widely distributed and low-cost distributed energy source.
However, it is worth mentioning that the biogas generated by anaerobic treatment needs to undergo pre-treatment such as desulfurization, decarbonization, and dehydration before entering the power generation unit. As the biogas generated by feces contains not only a large amount of methane and carbon dioxide, but also other components such as hydrogen sulfide, impurities, moisture, nitrogen oxides, and siloxanes. The biogas produced by anaerobic fermentation of feces has a high content of hydrogen sulfide and H2S, which can cause corrosion to the back-end power generation equipment. Therefore, biogas desulfurization is the most commonly used method for biogas purification.
Untreated biogas does not meet the requirements for engine gas quality. Direct entry of biogas into the engine may cause power fluctuations, unit knocking, shutdown, and even explosions. If the gas is simply treated, the moisture, dust content, pressure, temperature, etc. do not meet the requirements of the unit. Excessive water content can lead to a large accumulation of condensed water in the pipeline, resulting in a significant decrease in the availability and power generation of the unit; Excessive dust content can lead to excessive pressure loss, and the internal cylinder loss of the unit is more severe; Failure to meet the requirements of the unit, such as pressure and temperature, can lead to frequent unit trips, a significant decrease in availability, and an increase in maintenance and repair costs. After purification treatment such as desulfurization, the power generation of the unit can be increased by 70%. The effectiveness of biogas quality treatment directly affects the final efficiency of the unit, thereby affecting revenue. Therefore, selecting good pre-treatment equipment for gas desulfurization, decarbonization, dehumidification, impurity removal, pressure stabilization, constant temperature, and other work is a prerequisite to ensure safety and efficiency.
The basic requirements for the use environment and biogas of biogas generator units include:
1. The gas inlet pressure is 2-10kpa, and if the gas pressure of the generator set is too high or too low, a pressure regulating valve or boosting equipment needs to be added;
2. 燃气中不含游离水和大于5μm的游离物质，燃气中硫化氢含量需低于10ppm； 3. 机组一般使用环境：温度5℃~35℃，海拔高度≤500m；
2. Gas does not contain free water and is greater than 5 μ The free substance of m, the hydrogen sulfide content in the gas must be less than 10ppm; 3. General operating environment of the unit: temperature 5 ℃~35 ℃, altitude ≤ 500m;
This article is organized and published by Biological Desulfurization. Do you have any understanding of these contents? For more information, please click on: We will have more exciting content waiting for you to check out.