沼氣工程作為畜禽廢棄物資源化利用的能源環境工程,其沼氣發電環節是較為常見的資源化利用模式,通過開展沼氣發電利用,既能讓養殖場提高自身的經濟效益,又可緩解電力緊缺的矛盾,還能解決養殖場多余沼氣利用等問題,是一舉多得的好事情。
Biogas project is an energy and environmental project for the resource utilization of livestock and poultry wastes, and its biogas power generation link is a common resource utilization mode. Through the development of biogas power generation and utilization, it can not only improve the economic benefits of farms, but also alleviate the contradiction of power shortage, and solve the problems of surplus biogas utilization in farms, which is a good thing to achieve more with one stone.
養殖場開展沼氣發電機組必須具備三大條件:其一有良好的沼氣生產條件,其二有良好的沼氣貯存條件,其三有良好的沼氣發電利用設備(負荷)條件。
There are three conditions to develop biogas generating units in breeding farms: first, good biogas production conditions; second, good biogas storage conditions; third, good equipment (load) conditions for biogas power generation and utilization.
為了避免沼氣池的產氣量和生產發電及生活用氣量不平衡,養殖場的沼氣發電工程必須配備貯氣柜。有了貯氣柜,整個生產發電用氣量的調蓄和穩壓就有保證,純沼氣發電就有充分的可靠性、穩定性、安全性。因此設置沼氣貯存設備是辦好純沼氣發電不可缺少的穩定因素。
In order to avoid the imbalance of biogas production, power generation and domestic gas consumption, biogas power generation project of breeding farm must be equipped with gas storage tank. With the gas storage tank, the entire production of power generation gas storage and voltage regulation will be guaranteed, pure biogas power generation will have full reliability, stability and safety. Therefore, the installation of biogas storage equipment is an indispensable stable factor for running pure biogas power generation.
用電負荷量(或同時工作的用電設備功率)是養殖場選擇(購買)沼氣發電機組輸出功率大小重要指標,也是沼氣發電利用成功重要因素,直接關系到沼氣發電的經濟性、安全性和可靠性。
Electricity load (or the power of electric equipment working at the same time) is an important indicator of the output power of biogas generating units selected (purchased) by breeding farms. It is also an important factor for the success of biogas power generation and utilization, which is directly related to the economy, safety and reliability of Biogas power generation.
目前,養殖場利用沼氣發電基本上是內部使用。在沼氣氣源穩定的條件下,假如無視沼氣發電利用條件,沒有按照養殖場的用電負荷來進行正確匹配沼氣發電機組,則會出現下面情況:養殖場用電設備多、功率大,沼氣發電機組輸出功率小,那么大功率用電設備根本不能使用,沼氣發電意義不大;反之,用電設備少、功率小,而采用發電功率大的發電機組,電機達不到一定負荷作功,從而造成發電機的耗能增加及熱效率降低,節能效果不明顯,費錢費氣,經濟效益突顯不出。
At present, the use of biogas power generation is basically internal use. Under the condition of stable biogas source, if the utilization conditions of biogas power generation are ignored and the biogas generator set is not correctly matched according to the electric load of the breeding farm, the following situations will occur: there are many electric equipment and large power in the breeding farm, and the output power of the biogas generator set is small, then the high-power electric equipment can not be used at all, and the biogas power generation is of little significance; On the contrary, with less electrical equipment and small power, the generator set with high power generation can not reach a certain load, resulting in increased energy consumption and reduced thermal efficiency of the generator. The energy saving effect is not obvious, and the economic benefit is not obvious.