熱電聯(lián)產(chǎn)沼氣發(fā)電機組提高沼氣發(fā)電系統(tǒng)對沼氣的利用率，應(yīng)對沼氣發(fā)電過程中廢氣和發(fā)動機冷卻系統(tǒng)中產(chǎn)生的余熱加以充分利用，具體內(nèi)容做出介紹。
The cogeneration biogas generator unit should improve the utilization rate of biogas in the biogas power generation system, and fully utilize the waste gas generated during the biogas power generation process and the waste heat generated in the engine cooling system. The specific content should be introduced.
熱電聯(lián)產(chǎn)沼氣發(fā)電機組廢氣的余熱利用有三種
There are three types of waste heat utilization for cogeneration biogas generator sets
發(fā)動機廢氣的余熱通過廢熱鍋爐產(chǎn)生蒸汽加熱消化器
The residual heat of engine exhaust gas is generated through a waste heat boiler to heat the digester with steam
發(fā)動機廢氣的余熱通過換熱器產(chǎn)生熱水→加熱消化器
The residual heat of engine exhaust gas is generated into hot water through a heat exchanger → heating the digester
發(fā)動機廢氣的余熱通過廢氣吸收式冷熱水熱水器用于空調(diào)系統(tǒng)
The residual heat from engine exhaust is used in the air conditioning system through exhaust gas absorption type cold and hot water heaters

熱電聯(lián)產(chǎn)沼氣發(fā)電機組冷卻水中余熱利用
Utilization of waste heat in cooling water of cogeneration biogas generator units
發(fā)動機冷卻水中余熱→通過換熱器產(chǎn)生熱水以加熱消化器
Residual heat in engine cooling water → hot water is generated through a heat exchanger to heat the digester
沼氣發(fā)電系統(tǒng)能積極、有效地利用沼氣，可以將沼氣中約30%的能量變?yōu)殡娏Γ?0%的能量變?yōu)闊崮?。沼氣發(fā)動機在完全滿足人們對環(huán)保嚴(yán)格要求的同時，利用四沖程、高壓點火、渦輪增壓、中冷器、稀釋燃燒等技術(shù)，通過沼氣在汽缸內(nèi)燃燒做功，將沼氣的化學(xué)能轉(zhuǎn)換成機械能。
The biogas power generation system can actively and effectively utilize biogas, converting approximately 30% of its energy into electricity and 40% into thermal energy. While fully meeting people's strict requirements for environmental protection, the biogas engine uses four stroke, high-pressure ignition, turbocharging, intercooler, dilution combustion and other technologies to convert the chemical energy of biogas into mechanical energy through the combustion of biogas in the cylinder.
利用熱回收技術(shù)可將燃?xì)鈨?nèi)燃機中潤滑油、中冷器、缸套水和尾氣排放中的熱量充分回收利用而組成熱動機組。一般從發(fā)動機熱回收系統(tǒng)中吸收的熱量以90℃的熱水形式供給熱交換中心使用。內(nèi)燃機正常回水溫度為70℃。在污水處理廠中可利用這一熱量給消化池進(jìn)行熱。燃?xì)鈨?nèi)燃機機械效率通常達(dá)40%,熱效率可達(dá)50%,總效率高達(dá)90%.通常在O 為5%的情況下燃燒后排放的NO 500毫克/米 ,完全滿足環(huán)保的要求。
The heat recovery technology can be used to fully recover and utilize the heat from lubricating oil, intercooler, cylinder liner water and exhaust emissions in gas engine to form a thermal power unit. The heat absorbed from the engine heat recovery system is generally supplied to the heat exchange center in the form of 90 ℃ hot water. The normal return water temperature of the internal combustion engine is 70 ℃. In sewage treatment plants, this heat can be used to heat the digestion tank. The mechanical efficiency of gas internal combustion engine is usually 40%, the thermal efficiency is 50%, and the total efficiency is up to 90%. Normally, when O is 5%, the NO emitted after combustion is 500 mg/m, fully meeting the requirements of environmental protection.