1. Biogas desulphurization and steady pressure and explosion-proof device: the biogas for the engine must pass through the desulphurizing device to reduce the corrosion of hydrogen sulfide to the engine. The steady pressure device is installed on the intake pipe of the methane gas to facilitate the adjustment of the flow rate and reach the good air to fuel ratio of Zui. In addition, in order to prevent the intake pipe from tempering, the fireproof and explosion-proof device should be placed on the general pipe of the methane gas.
2, intake control system: in the intake manifold, a sensitive gas mixer is set up to regulate the mixing ratio of air and methane.
3, engine ignition system: biogas burning rate is slow, for the original gasoline and diesel and natural gas engine ignition system to a certain degree of transformation, in order to improve combustion efficiency, reduce post combustion phenomenon, prolong operation life.
4, speed control system: if the biogas generating unit operates independently, that is, the operation of the electric power equipment as a load, and the incorporation and unloading of the electrical equipment will cause the load of the generator to fluctuate. In order to ensure the normal operation of the generator set, the speed regulating system on the biogas engine is essential.
5. Preheating utilization system: using the preheating device to make use of the heat in the cooling water and exhaust of the engine, so as to improve the efficiency of the energy utilization of the methane.
6, grid connected control system: mainly including generator voltage regulation circuit, automatic quasi synchronous parallel control circuit, manual parallel and column control circuit, measuring circuit, gas engine and auxiliary equipment control circuit.
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