Compact special-shaped selective catalytic reduction reactor
A reactor and selective technology, applied in the direction of machines/engines, exhaust gas treatment, mechanical equipment, etc., can solve the problems such as the inability to meet the requirements of the internal combustion EMU and the processing index of the diesel locomotive, and the reactor cannot be installed in the internal combustion EMU, etc. Achieve the effect of satisfying denitrification performance, compact structure and uniform flow field mixing
Pending Publication Date: 2020-01-21
CRRC DALIAN INST CO LTD +1
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Problems solved by technology
It can be seen that the reactor of the existing SCR exhaust gas after-treatment system cannot be installed in the DMU, and it is far from meeting the treatment index requirements of DMU and diesel locomotive
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[0027] like image 3 and Figure 4 As shown, a compact special-shaped selective catalytic reduction reactor includes a gas collecting box 2, a mixing box 5 and a reaction box 8 connected in sequence, the gas collecting box 2 is provided with a reductant nozzle, and the mixing box 5 The width gradually increases from the end connected to the gas collection box 2 to the end connected to the reaction box 8, and the top plate of the mixing box 5 includes a rectangular first middle top plate 13 and is arranged on both sides of the first middle top plate 13. The first side top plate 14 inclined downwards, the top plate of the reaction box 8 includes a rectangular second middle top plate 11 and a second side top plate 12 that is arranged on both sides of the second middle top plate 11 and slopes downward, the mixing box 5 A sound-absorbing structure is arranged inside, and a catalyst carrier loaded with a catalyst is arranged inside the reaction box 8 . The reducing agent used in t...
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Abstract
The invention discloses a compact special-shaped selective catalytic reduction reactor. The compact special-shaped selective catalytic reduction reactor comprises a gas collection box, a mixing box and a reaction box which are connected in sequence, a reduction agent nozzle is formed in the gas collection box, the width of the mixing box is gradually increased from the end connected with the gas collection box to the end connected with the reaction box, a top plate of the mixing box comprises a first middle top plate which is rectangular and first side top plates which are arranged on the twosides of the first middle top plate and incline downwards. The top plate of the reaction box comprises a second middle top plate which is rectangular and second side top plates which are arranged on the two sides of the second middle top plate and incline downwards, a silencing structure is arranged in the mixing box, and a catalyst carrier loaded with a catalyst is arranged in the reaction box. The compact special-shaped selective catalytic reduction reactor is compact in space, small in flowing resistance, uniform in flow field mixing and free of dead space, can be mounted in an internal combustion D-series high-speed train and an internal combustion locomotive body and can meet the requirements of waste gas discharge catalytic denitration and noise reduction under the application working condition for the flow field and space.
Description
technical field [0001] The invention relates to the technical field of post-treatment of locomotive diesel engine exhaust, in particular to a compact special-shaped selective catalytic reduction reactor. Background technique [0002] The Selective Catalytic Reduction (SCR) exhaust aftertreatment system uses ammonia as the reducing agent, and under the action of the catalyst, the harmful NO in the exhaust of the diesel engine is X into harmless nitrogen (N 2 ) and water vapor. The reactor is the key equipment of the Selective Catalytic Reduction (SCR) exhaust gas after-treatment system, and its function is to convert NO X The catalytic reduction reaction provides a site. [0003] In the future, diesel multiple units and diesel locomotives that meet the requirements of environmental protection regulations require SCR exhaust after-treatment systems to be installed in the car body. The space provided for the SCR reactor in the car body of the diesel train unit and the diese...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F01N3/28F01N1/08F01N3/20F01N13/14F01N13/18
CPCF01N3/28F01N3/2882F01N3/2892F01N1/082F01N3/2066F01N13/14F01N13/1838F01N13/1822F01N13/1816F01N2230/04F01N2610/02F01N2590/08Y02T10/12F01N2260/08
Inventor 班海波张博刘志坚高博段耒黄佳伟张博睿
Owner CRRC DALIAN INST CO LTD