Diesel engine exhaust gas purification and heat recovery composite system
An exhaust gas purification and composite system technology, applied in mechanical equipment, exhaust devices, exhaust treatment and other directions, can solve the problems of polluting the living environment, health threats, restricting the development and application of diesel engines, etc., and achieve the effect of saving heat energy loss
Active Publication Date: 2020-02-07
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology
Harmful substances such as carbon dioxide, nitrogen oxides, and soot, if they are directly discharged, these pollutants will greatly pollute our living environment and pose a great threat to our human health. For this reason, the further development of diesel engines is greatly restricted. develop
In addition, harmful substances such as carbon dioxide, nitrogen oxides and soot contained in the flue gas (such as: soot particles, hydrocarbons, CO and NOx, etc.), if directly discharged, will cause great harm to individuals and the environment
At the same time, it also restricts the further development and application of diesel engines.
Method used
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[0025] like Figure 1 to Figure 4As shown: the diesel exhaust gas purification and heat recovery composite system of this embodiment includes a catalytic oxidation device, a desulfurization device, a heat energy recovery device and a denitrification device arranged sequentially along the flow direction of the exhaust gas; the catalytic oxidation device includes a housing I11 and a The honeycomb ceramic carrier 12 in the housing I11, the honeycomb ceramic carrier 12 includes a honeycomb body 12a with a plurality of air passages 13 arranged in parallel and arranged in parallel, and is fixed in an offset manner between any two adjacent air passages 13 The baffle 14 in each air channel 13; the part between any two adjacent air channels 13 in the honeycomb body 12a is provided with a cordierite filter body 15; the cordierite filter body 15 is provided with a catalyst coating; The shell I11 can be cylindrical; the honeycomb ceramic carrier 12 has a three-dimensional filtering struct...
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The invention discloses a tail gas purification and heat recovery combined system for a diesel engine. The tail gas purification and heat recovery combined system comprises a catalytic oxidization device, a desulfurizer, a heat energy recovery device and a denitration device which are sequentially arranged in the tail gas flowing direction. The catalytic oxidization device comprises a first shell and a honeycomb-shaped ceramic carrier arranged in the first shell. The cellular ceramic carrier comprises a honeycomb-shaped body provided with a plurality of air channels distributed in parallel, and baffles which are arranged between the adjacent air channels in a staggered mode and fixed into the corresponding air channels. A cordierite filtering body is arranged on the portion, used for partitioning every two adjacent air channels, inside the honeycomb-shaped body, and provided with a catalytic coating. By adoption of the tail gas purification and heat recovery combined system for the diesel engine, the tail gas of the diesel engine can be effectively purified; and meanwhile, the heat energy can be recycled, and loss of the heat energy is saved.
Description
technical field [0001] The invention relates to the field of tail gas purification, in particular to a diesel engine tail gas purification and heat recovery composite system. Background technique [0002] Diesel engines are widely used in transportation, engineering, agricultural and forestry machinery and other fields due to their advantages of large power and high thermal efficiency. However, due to the large amount of pollutants emitted by diesel engines, the emission levels of harmful substances in diesel engine exhaust are generally in the following ranges: CO concentration 50-5000ppm; NOx concentration: direct injection 100-3000ppm, split type 100-1500ppm; Degree 0.2-2.0 Bosh unit, particle concentration 0.01-0.8g / m 3 , SO 2 Concentration 0-200ppm, aldehyde concentration 10-200ppm, benzopyrene 0.5-30 micrograms / m 3 . Harmful substances such as carbon dioxide, nitrogen oxides, and soot, if they are directly discharged, these pollutants will greatly pollute our livin...
Claims
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IPC IPC(8): F01N3/28F01N3/08B01D53/92B01D53/50
CPCB01D53/508B01D53/92F01N3/0814F01N3/2066F01N3/2803F01N2250/12F01N2560/06F01N2570/04F01N2570/10F01N2570/12
Inventor 胡启国马海成高峰赵大跃王亚飞王承萍
Owner CHONGQING JIAOTONG UNIVERSITY