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沼气发电机组效率是如何产生的?

来源:   发布于:2018-02-05

目前,国内很多废水厌氧处理的沼气,沼气中CH4含量在50-60%之间,那么如果选用合适的沼气发电机组,每立方沼气可发电1.5-1.8度,具体沼气发电效率需要根据沼气成分及热值判断。

At present, many domestic wastewater anaerobic treatment biogas and biogas CH4 content is between 50-60%. If we choose the right biogas generating set, each cubic biogas can generate 1.5-1.8 degrees. The specific biogas power generation efficiency needs to be judged based on biogas composition and calorific value.

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%。

Methane is a mixture of methane, which is mainly composed of methane, followed by carbon dioxide, hydrogen sulfide (H2S), nitrogen and some other components. In the composition of biogas, the combustible components include methane, hydrogen sulfide, carbon monoxide and heavy hydrocarbon. The non combustible components include carbon dioxide, nitrogen and ammonia. Methane content is 55% ~ 70%, carbon dioxide content is 28% ~ 44%, and the average content of hydrogen sulfide is 0.034% in the composition of biogas.

沼气发电机组的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。

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Gas turbine capacity depends on the following two factors: one is the amount of methane, the greater the amount of methane, the installed capacity is big; two is the load (here refers to the useful electrical equipment per hour internal power) size, especially for small and medium scale farming by this factor is greatly affected.

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,严重影响沼气发电机组的使用寿命,所以含硫的沼气必须要增加脱硫装置。

The sulfur in biogas is mainly in the form of hydrogen sulfide (H2S). Its molecular formula is H2S, and its molecular weight is 34.076. Under the standard condition, it is a flammable acid gas, colorless, odorous eggs with low odor and highly toxic. Hydrogen sulfide is an important chemical material. Hydrogen sulfide gas in cylinder gas engine in high temperature combustion conditions, the formation of SO (thioredoxin) compounds, the engine cylinder, piston, cylinder and other corrosive, seriously affecting the biogas power generation equipment life, so we must increase the sulfur biogas desulfurization device.

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,我们可以通过余热利用装置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。

Biogas power generation units in the power generation process, the flue gas temperature reaches 500 degrees, in the engine cylinder water is 80 degrees or so, we can use the waste heat utilization device inside the heat exchange, if the amount can be used for heating for us, if we can supply a small amount of domestic water.

以上就是为大家介绍的有关沼气发电机组 的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以最专业的态度,为您提供服务.

The above is a detailed introduction to about biogas generating set. I hope it will help you. If you have any questions, please contact us. We will provide you with the most professional attitude.


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