Diesel engine tail gas waste heat utilization system using oxygen-containing fuel as heat absorbing carrier
An oxygen-containing fuel, diesel engine technology, applied in the charging system, fuel heat treatment device, combustion engine and other directions, can solve the problems of high exhaust gas temperature, reducing thermal efficiency of diesel engine, affecting air quality and other problems
Inactive Publication Date: 2011-11-02
TSINGHUA UNIV
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Problems solved by technology
[0002] The exhaust gas temperature of ordinary diesel engines is relatively high, especially in high-load operation, the exhaust gas temperature can reach 300-500°C, so the heat loss of exhaust smoke is large, thereby reducing the thermal efficiency of diesel engines and causing high fuel consumption of diesel engines
In addition, high-temperature combustion in diesel engines tends to form NOx, while high-temperature pyrolysis of diesel or local anoxic combustion tends to generate soot. These pollutants are discharged into the atmosphere along with diesel engine exhaust, seriously affecting air quality
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[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0011] A diesel engine exhaust waste heat utilization system with oxygen-containing fuel as the heat-absorbing carrier, such as figure 1 As shown, the system is composed of combustion chamber 1, intake pipe 2, heat exchanger 3 and exhaust pipe 4; intake pipe 2 communicates with combustion chamber 1 and heat exchanger 3 through pipes; another pipe of combustion chamber 1 communicates with heat exchanger The heat exchanger 3 is connected; the exhaust pipe 4 is installed at the end of the heat exchanger 3; the heat exchanger 3 includes an inner pipe, an outer pipe and at least one baffle, the inner pipe is a plurality of copper tube bundles, and the inner wall of the outer pipe is stainless steel; the heat exchanger 3 is a small high-efficiency heat exchanger or a small catalytic reactor.
[0012] The working process of the system is: after the d...
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The invention discloses a diesel engine tail gas waste heat utilization system using oxygen-containing fuel as a heat absorbing carrier, which belongs to the technical field of diesel engine combustion energy-saving and emission reduction. The system comprises a combustion chamber, an air inlet pipe, a heat exchanger and an exhaust pipe, wherein the air inlet pipe is communicated with the combustion chamber and the heat exchanger through one pipeline; the other pipeline of the combustion chamber is communicated with the heat exchanger; and the exhaust pipe is installed at the tail end of the heat exchanger. The system disclosed by the invention can realize the decomposition of the oxygen-containing fuel without external additional energy supply and achieve the purposes of saving energy and reducing emission through mixing with the decomposed mixture gas to enter the diesel engine combustion chamber to participate in combustion.
Description
technical field [0001] The invention belongs to the technical field of diesel engine combustion energy saving and emission reduction, and in particular relates to a diesel engine tail gas waste heat utilization system in which oxygen-containing fuel is a heat-absorbing carrier. Background technique [0002] The exhaust gas temperature of ordinary diesel engines is relatively high, especially in high-load operation, the exhaust gas temperature can reach 300-500°C, so the heat loss of exhaust fumes is large, thereby reducing the thermal efficiency of diesel engines and causing high fuel consumption of diesel engines. In addition, high-temperature combustion in diesel engines is easy to form NOx, and high-temperature pyrolysis or local anoxic combustion of diesel oil is easy to generate soot. These pollutants are discharged into the atmosphere along with diesel engine exhaust, seriously affecting air quality. Contents of the invention [0003] The object of the present invent...
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IPC IPC(8): F02M31/16F01N5/02
CPCY02T10/16Y02T10/12
Inventor 钟北京龚景松党帅袁振
Owner TSINGHUA UNIV