針對發動機對沼氣的要求，在沼氣發動機前安裝處理系統以解決了氣源側與用氣側的矛盾是目前解決沼氣發電機組利用問題的有用方法，在沼氣發電機生產的時候如何才能避免因沼氣的因素對發電機組的影響呢？

According to the requirements of the engine for biogas, installing a treatment system in front of the biogas engine to solve the contradiction between the gas source side and the gas consumption side is a useful method to solve the utilization problem of biogas generator set at present. How can we avoid the influence of biogas factors on the generator set during the production of biogas generator?

沼氣發電機組

Biogas Generator Set 

1.降低氣體的相對濕度

1. Reduce the relative humidity of gas

水分的脫除，考慮到具體的情況，簡單分為凝結水的脫除以及未凝結水脫除兩大部分，前者可以采用汽水分離器來實現，后者的實現較為復雜，目前主要有下面幾種方式：

Considering the specific situation, water removal is simply divided into condensate removal and non condensate removal. The former can be realized by steam water separator, and the latter is more complex. At present, there are mainly the following ways:

低溫除濕：通過制冷設備降低氣體的溫度，使得其中的水蒸氣凝結，然后排除系統；吸附：采用對水有較強吸附作用的吸附劑，將氣體中的水分析出；膜過濾：采用特殊結構的膜材料，在特定的條件下將水從氣體中分出。

Low temperature dehumidification: reduce the temperature of gas through refrigeration equipment to condense the water vapor, and then discharge the system; Adsorption: the adsorbent with strong adsorption on water is used to analyze the water in the gas; Membrane filtration: membrane material with special structure is used to separate water from gas under specific conditions.

2.降低氣體雜質成分含量

2. Reduce the content of gas impurities

氣體中的雜質是比較復雜的成分，由于是針對發動機的利用，所以對雜質的判斷主要以發動機的要求為準，主要有下面幾種：

The impurities in the gas are complex components. Since they are used for the engine, the judgment of impurities is mainly based on the requirements of the engine, mainly including the following:

（1）硫的去除：以硫化氫為主的硫化物的去除主要有物理、化學以及生物三種方式。其中物理方法主要指物理吸附方式脫硫，這種方式操作簡便，但往往需要占地較大的設備，而且吸附劑需要再生。化學方式指以化學反應的方式將硫固化下來，目前有干法及濕法，其差別主要是反應物的物理形態是固體還是液體的差別。生物法脫硫是目前比較新興的一種方式，其主要原理是在反應罐中培養出合適的菌種，這些菌種以硫化物為養料，將其中的硫固定下來。對于硫含量不高的氣體，采用物理吸附或者干法脫硫一般比較經濟實用，而且操作簡便。

(1) Sulfur removal: the removal of sulfide dominated by hydrogen sulfide mainly includes physical, chemical and biological methods. Among them, physical method mainly refers to physical adsorption desulfurization, which is easy to operate, but often requires large equipment, and the adsorbent needs to be regenerated. Chemical method refers to the solidification of sulfur by chemical reaction. At present, there are dry method and wet method. The difference is mainly whether the physical form of reactants is solid or liquid. Biological desulfurization is a relatively new way at present. Its main principle is to cultivate appropriate bacteria in the reaction tank. These bacteria use sulfide as nutrient to fix the sulfur. For the gas with low sulfur content, physical adsorption or dry desulfurization is generally economical and practical, and the operation is simple.

（2）粉塵（顆粒物）的去除：

(2) Removal of dust (particulate matter):

通常采用過濾的方式將顆粒物限制在一定的范圍內。另外，某些顆粒可以在吸附的環節去除掉，為達到較好的去除效果，一般對氣體中的顆粒物分級處理，設置不同精度的過濾器，逐級將顆粒物處理到系統的要求，這樣不僅可以降低精 密過濾的成本，也可以增加系統運行的可靠性。

Filtration is usually used to limit particulate matter to a certain range. In addition, some particles can be removed in the process of adsorption. In order to achieve better removal effect, the particles in the gas are generally treated by stages, and filters with different accuracy are set to treat the particles to the requirements of the system step by step, which can not only reduce the cost of precision filtration, but also increase the reliability of system operation.

這些操作利用外部手段使沼氣的成分與沼氣發電機組的操作性能更加匹配，提升機械生產的質量，降低生產時機械的磨損，實現效益的大化，相信這也是眾多機械發電生產商的共同追求。

These operations use external means to better match the composition of biogas with the operating performance of biogas generator set, improve the quality of mechanical production, reduce the wear of machinery during production, and realize the maximization of benefits. I believe this is also the common pursuit of many mechanical power generation manufacturers.