說(shuō)到瓦斯發(fā)電機(jī)不得不提到瓦斯收集這個(gè)事情,那么瓦斯收集利用是用怎樣的技術(shù)和機(jī)械呢?先說(shuō)瓦斯的收集:瓦斯的收集通過(guò)瓦斯抽采,瓦斯抽采一般采用水環(huán)真空泵,例如我工作的煤礦采用的就是2BEC52型和2BEC72型水環(huán)真空泵。泵安裝在地面抽放泵站里(當(dāng)然也有井下移動(dòng)泵站,不過(guò)一般抽采能力小),泵與抽放主管路連接,抽放主管路一直通過(guò)井筒延伸到井下與采抽放支管連接,支管再與鉆孔連接。一個(gè)煤礦井下可能有幾千、上萬(wàn)個(gè)鉆孔,瓦斯就來(lái)自這些鉆孔,并通過(guò)抽放管路匯聚到瓦斯泵站。下面說(shuō)瓦斯的利用:高濃度瓦斯可以加以利用(一般濃度30%以上的稱(chēng)為高濃度瓦斯),一般利用途徑就是瓦斯發(fā)電,低濃度瓦斯由于利用比較困難或者成本太高,一般都直接排放到大氣里了
When it comes to gas generators, we have to mention gas collection. What technology and machinery are used for gas collection and utilization? Let's start with gas collection: gas is collected through gas extraction, which generally uses water ring vacuum pump. For example, the coal mine I work in uses 2bec52 and 2bec72 water ring vacuum pumps. The pump is installed in the ground pumping station (of course, there are also underground mobile pumping stations, but generally the pumping capacity is small). The pump is connected with the main pumping road. The main pumping road extends underground through the shaft and is connected with the production, pumping and drainage branch pipe, which is then connected with the borehole. There may be thousands or tens of thousands of boreholes in a coal mine. The gas comes from these boreholes and converges to the gas pump station through the drainage pipeline. The following is about the utilization of gas: high concentration gas can be used (generally more than 30% of the concentration is called high concentration gas). The general utilization way is gas power generation. Low concentration gas is generally directly discharged into the atmosphere because it is difficult to use or the cost is too high .
煤層氣在煤礦稱(chēng)為煤礦瓦斯。根據(jù)新的資源評(píng)價(jià)結(jié)果,我國(guó)陸上煤層氣資源量36.8萬(wàn)億立方米,與陸上常規(guī)天然氣資源量(38萬(wàn)億立方米)相當(dāng),僅次于俄羅斯和加拿大。煤層氣的主要成分是甲烷,甲烷在空氣中的濃度達(dá)到5%-16%時(shí),遇明火就會(huì)爆炸,這是煤礦瓦斯爆炸事故的根源。 煤層氣不加以利用,直接排放到大氣中,其溫室效應(yīng)約為二氧化碳的21倍。瓦斯發(fā)電機(jī)發(fā)電,既可以更好的解決煤礦瓦斯事故、改良煤礦生產(chǎn)條件,又有利于增加潔凈能源供應(yīng)、減少溫室氣體排放,達(dá)到保護(hù)生命、保護(hù)資源、保護(hù)環(huán)境的多重目標(biāo)。
Coalbed methane is called coal mine gas in coal mines. According to the new resource evaluation results, China's onshore coalbed methane resources are 36.8 trillion cubic meters, which is equivalent to the onshore conventional natural gas resources (38 trillion cubic meters), second only to Russia and Canada. The main component of coalbed methane is methane. When the concentration of methane in the air reaches 5% - 16%, it will explode in case of open fire, which is the root of coal mine gas explosion accidents. Coalbed methane is not used and directly discharged into the atmosphere, and its greenhouse effect is about 21 times that of carbon dioxide. Gas generator power generation can not only better solve coal mine gas accidents and improve coal mine production conditions, but also help to increase clean energy supply and reduce greenhouse gas emissions, so as to achieve the multiple objectives of protecting life, resources and environment.
采用電控燃?xì)饣旌掀骷夹g(shù),可以自動(dòng)控制空燃比 ,以適應(yīng)瓦斯的濃度變化,同時(shí),低濃度瓦斯輸送技術(shù),采用細(xì)水霧技術(shù),解決了低濃度瓦斯的地面輸送問(wèn)題
By adopting the technology of electrically controlled gas mixer, the air-fuel ratio can be automatically controlled to adapt to the change of gas concentration. At the same time, the low concentration gas transportation technology and water mist technology solve the problem of ground transportation of low concentration gas
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