I want to do biogas power generation at home. Which cow gives a plan. Specific point. On the Internet to see some equipment, but the price is too expensive. Gasoline engine is a good practice
The operation method of three biogas diesel dual fuel engine and precautions (a), use method 1, starting off gas valve, according to the method of starting the diesel engine, diesel engine starting operation method and not modified as before. 2, after the start of operation: starting with load, the engine throttle in place (usually put a little low position in the middle), when the engine is operating normally, slowly open the valve input biogas biogas. After entering the methane, the oil supply is automatically reduced under the governor, and the engine speed is stable. If the methane input is too much, the engine will appear instantaneous oil supply interruption, resulting in intermittent work sound. In this case, should be at any time to close the small gas valve until the normal operation. In the process of operation, the method of adjusting the rotational speed is the same as that of the diesel engine before modification. With the dual fuel engine speed or load size changes, but also the corresponding large or small to open the gas valve in order to ensure the normal operation of the dual fuel engine and better fuel saving effect. When the cooling water temperature is low and the load is small, the oil saving effect is poor. 3, stop: first off the gas valve, then close the throttle.
Two, diesel engine with methane conversion method diesel engine and ignition engine (gasoline engine) is the most economical internal combustion engine. The two engines must be refitted for use as a fuel to provide a suitable mixture for the combustion chamber. Biogas engine is generally divided into two types of compression ignition and ignition. The compression ignition engine uses diesel oil and methane dual fuel, which is ignited by a small amount of diesel fuel to ignite the methane. The characteristic of this kind of engine is that it can adjust the ratio of diesel to methane, and the engine can work normally when the methane is insufficient or even stopped. The disadvantage is that the system is complex, so large-scale biogas power generation projects often do not use this engine. The utility model is characterized in that the utility model has the advantages of simple structure, convenient operation and no auxiliary fuel, and is suitable for large and medium-sized biogas projects. The diesel engine is refitted into an ignition biogas engine, in addition to adding a methane air mixer before the carburetor, an electric ignition system is additionally arranged, and the spark plug is added at the same time. {$page}
Due to the uprising of good performance, the engine can use a higher compression ratio, so the working volume of the engine, the power in the use of biogas can be obtained not less than the original machine. For example, a large number of agricultural diesel engines in rural areas, in the use of biogas or dual fuel work, you can get the equivalent of the original power. This makes the convenience in equipment, type S195 horsepower diesel engine as an example, the original more than two kinds of pumps, and tractors, rice, feed and power generation equipment, the matching speed and power have been made for many years, such as changes to the biogas power developed a a large set of new products, is bound to get, it is difficult to promote.
One, the power of methane combustion characteristics of methane so as a fuel is due to containing more than 50% of methane. General biogas containing methane 60 ~ ~ 70%. Low calorific value per cubic meter of methane is about 5000 ~ 6 million cards, with a high calorific value. Because the methane contains carbon dioxide, so that the flame propagation speed is reduced, so in the internal combustion engine has good antiknock performance, methane octane number between 105 ~ 115, and the methane is still higher, can be as high as 135
