Wastegas steam turbine super charging system

Abstract

A waste gas boosting system for steam turbine has an air compressor connected with the air inlet tube of diesel engine, and a heat exchanging unit connected with the exhaust tube of diesel engine. Said heat exchanging unit consists of a casing, 5 heat exchangers, over-heat steam generator, and steam storage chamber with a steam output tube connected to steam turbine arranged coaxially with said air compressor.

Description

Technical field [0001] The invention relates to an exhaust gas treatment supporting system for a split-cylinder diesel engine, in particular to an exhaust gas steam turbocharging system capable of recovering and reusing the chemical and thermal energy in the exhaust gas discharged by the split-cylinder diesel engine. It can also be used in installation On an ordinary diesel engine with a gas wave supercharger. Background technique [0002] Exhaust gas turbocharging of the current diesel engine only uses the pressure energy in the exhaust gas discharged by the diesel engine, and at the expense of increasing the exhaust back pressure, while the chemical energy and thermal energy in the exhaust gas are discharged into the atmosphere without any use. . [0003] The turbine in the current diesel exhaust gas turbocharging system needs to withstand a high temperature of about 1000℃, which requires special materials and special processes to manufacture the turbine. The manufacturing cost...

AI Technical Summary

Problems solved by technology

[0003] The turbine in the current exhaust gas turbocharging system of a diesel engine needs to withstand a high temperature of about 1000°C, which requires the use of special materials and special processes to manufacture the turbine, which requires high manufacturing costs and high-speed operation, with a speed of 100,000 to 130,000. revolution per minute, and high-speed operation also requires floating bearings and high-standard oil. This kind of oil needs to be supplied by the main engine oil pump, but the main engine can normally run normally without using such high-standard oil. This not only causes economic waste, but also The cleaning cycle of the filter is shortened, the operator is affected, frequent failures occur, the rotor shaft is fatigued and broken, and the supercharger bursts occasionally. Otherwise, the supercharger will be burned out, because of the pressure ratio, the burden on the oil seal will be increased, and if there is a slight problem, the oil will be sucked or blown away

[0004] In the current diesel engine exhaust gas turbocharging system, if the exhaust gas pollution is to be eliminated, another diesel engine post-processing mechanism must be installed, and precious metals will be consumed and fuel consumption will be increased. The oil must also be desulfurized, otherwise the catalyst will be poisoned and become invalid. The process of sulfur removal also pollutes the air

[0005] The current exhaust gas turbocharging system of diesel engines has poor startability and acceleration. It takes a certain amount of time from the change of exhaust volume to the establishment of new intake pressure, and smoke is emitted when starting or accelerating, and the pollution is relatively serious. The current Diesel engine, whether it is supercharged or non-supercharged, the intake air volume of each cycle is a fixed value, and the oil intake volume and excess air coefficient of each cycle vary with different working conditions, so the pollution is relatively serious

[0006] The oil circuit of the current diesel engine is often blocked in winter, especially in northern my country, and it may also be blocked in the case of hypoxia on the plateau, which brings difficulties to driving.

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