CN208236480U - Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device - Google Patents

Abstract

Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device is mainly by wood-fibred filter core, fair water cone, double-ended iron nail, insulating support, bracket, silicagel pad, ceramic plug, upper housing and lower case composition.40 double-ended iron nails are uniformly mounted on to the surface of wood-fibred filter core, form the iron nail clump of proper alignment, and iron nail tip is in the same arc surface, each double-ended iron nail must be touched with the dermoskeleton bridge joint of wood-fibred filter core, while double-ended iron nail is installed, two insulating supports are covered on the outer wall of wood-fibred filter core, guarantee enough discharging gaps between shell and double-ended iron nail.After installing shell and respective accessory, positive and negative polarity wire connects high voltage power supply, in double-ended iron nail Point Corona Discharge and can generate low temperature plasma, the NOx and PM in cooperation wood-fibred filter core processing tail gas.

Description

Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device

Technical field:

The utility model belongs to purifying vehicle exhaust field, is mounted on diesel engine exhaust rear end, mainly uses physics Nitrogen oxides (the NO in method processing diesel engine vent gas combined with chemistry_X) and carbon soot particles (PM).

Background technique:

By the exploration of decades, the auto industry in China achieves faster development, and the ownership of automobile gradually increases. Wherein diesel engine is because of its power abundance, and compression ratio is high, and structure is simple, and the advantages such as long service life make it on engineering truck It is widely used.But its disadvantage is it is also obvious that discharge NO in tail gas_XIt is one of the main source for causing atmosphere pollution with PM.Mesh Before, mainstream handles NO_XTechnology be selective catalytic reduction (SCR), but there are urea droplets easily to deposit for SCR technology, NH₄ The problems such as easily revealing, and entire purification system cost is higher, structure is complicated.Because corona discharge generates Low Temperature Plasma Treating Nitrogen oxides significant effect, structure are simple；Wood-fibred belongs to natural porous biological material, have extremely strong gas permeability and Corona discharge technology is combined with wood-fibred and novel Point Corona Discharge wood-fibred filter core vent gas treatment is made by dust adsorptivity Device.The device exhaust back pressure is small, and absorption PM ability is strong, while wood-fibred adsorbs PM, can also generate for point discharge Low temperature plasma and NO_XReaction provides reaction compartment, to realize filtering NO_XWith the purpose of PM.

Utility model content:

Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device is mainly by wood-fibred filter core, fair water cone, diameter Double-ended iron nail, the insulating support of 2mm, a length of 20mm, bracket, silicagel pad, ceramic plug, upper housing and lower case composition.By 40 Double-ended iron nail is arranged in 4 column, is separated by 90 ° between the column and the column, each column 10 vertical equidistant modes are uniformly inserted into wood-fibred filter The outer surface of core forms the iron nail clump of proper alignment in the periphery of wood-fibred filter core, guarantees that all iron nail tips are in same A arc surface, and each double-ended iron nail must be touched with the dermoskeleton bridge joint of wood-fibred filter core.While double-ended iron nail is installed, Two insulating supports are covered on the outer wall of wood-fibred filter core, for guaranteeing between shell and double-ended iron nail between enough electric discharges Gap.In lower case, successively mounting bracket, fair water cone, the wood-fibred filter core equipped with double-ended iron nail and insulating support, positive wire Logical aperture connects with the outer skeleton of wood-fibred filter core, and minus earth coats insulating layer in upper housing and lower casing external surface.Finally make Upper housing is connected with lower case with flange, centre is sealed with silicagel pad.When positive and negative polarity wire the other end connect high voltage power supply, Corona discharge can occur in gap between double-ended iron nail and shell, due to using more double-ended iron nails, so can generate more A region of discharge, thus can discharging gap between double-ended iron nail and shell generate more low temperature plasmas, high concentration Low temperature plasma and vehicle exhaust in NO_X, PM complicated redox reaction occurs for a long time, generate N₂And CO₂Etc. nothings Evil gas achievees the purpose that purify nitrogen oxides.Subsequent gas penetrates into wood-fibred filter core, and wood-fibred has loose porous, logical Permeability is by force and the physical characteristic of dust excellent adsorption achievees the purpose that filter PM by the filtering of wood-fibred.

Detailed description of the invention:

Fig. 1: upper-lower casing and its accessory.1 gas outlet, 2 upper housings, 3 flanges, 4 apertures, 5 ceramic plugs, 6 lower cases, 7 into Port.

Fig. 2: wood-fibred filter core and its accessory.8 insulating supports, 9 wire netting inner frames, 10 wire nettings outer skeleton, 11 double ends Iron nail, 12 fair water cones, 13 brackets.

Specific embodiment:

Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device, cuts out two pieces of wire nettings first, wire netting is done At skeleton outside wire netting inner frame and wire netting, then will be with a thickness of 0.05-0.1mm, width 1-10mm, length 30-50mm Long wood-fibred be uniformly filled between inner frame and outer skeleton.Round asbestos are stained with heat-resistant adhesive in one end of wire netting Plate, asbestos board diameter is consistent with the outer skeleton diameter of wire netting, and the other end is stained with asbestos board annulus, asbestos board internal radius and iron wire Net inner frame diameter is identical, and the outer skeleton diameter of outer diameter and wire netting is identical, is fabricated to wood-fibred filter core, guarantees that filling rate reaches 0.25.Insulating support is put on respectively at the outer surface of wood-fibred filter core axial 1/4 and at 3/4, for keeping and upper-lower casing Gap, reserve enough discharge spaces.Prepare 40 φ 20mm × 5mm double-ended iron nails, one end of double-ended iron nail is against into iron 5mm in the outer skeleton mesh insertion wood-fibred of silk screen, keeps double-ended iron nail to contact with the good of wire netting.40 double-ended iron nails are arranged 4 column are arranged into, are separated by 90 ° between the column and the column, each column 10 vertical equidistant modes are uniformly inserted into the outer surface of wood-fibred filter core, And all double-ended iron nails are top in the same arc surface.Novel Point Corona Discharge wood-fibred filter core exhaust gas processing device Upper housing and lower case are cylindrical shapes, weld a bracket in the bottom position φ 3mm iron staff of lower case, lead for placing Cap is flowed, guarantees that fair water cone in the center of lower case, is then packed into the wood-fibred filter core for being equipped with double-ended iron nail and insulating support, The aperture of φ 3mm is beaten in the side of the lower case apart from flange 30mm, ceramic plug is packed into, by positive wire by being equipped with ceramic plug Aperture is connected on the outer skeleton of wood-fibred filter core, finally installs upper housing, upper housing and lower case by flanged joint, centre is put Set silicagel pad sealing, cathode conductor bonding.Positive wire is connected into high voltage power supply with the other end of cathode conductor, voltage will be hit The air between double-ended iron nail tip and metal shell is worn, corona discharge is generated.Since there are many places tips, so can generate more A region of discharge, while generating a large amount of low temperature plasma.Tail gas flows into metal shell through air inlet pipe, will by fair water cone Air-flow is directed into the gap between metal shell and wood-fibred filter core, and it is anti-that complicated chemistry occurs with the low temperature plasma of generation It answers, then gas is filtered by wood-fibred, is finally discharged through escape pipe to wood-fibred filter core internal penetration.By being based on corona The processing of the wood-fibred exhaust gas processing device of electric discharge, the NO in diesel engine vent gas_XIt can be greatly lowered with PM content.

Claims (3)

1. novel Point Corona Discharge wood-fibred filter core exhaust gas processing device, is mainly by wood-fibred filter core, fair water cone, diameter Double-ended iron nail, the insulating support of 2mm, a length of 20mm, bracket, silicagel pad, ceramic plug, upper housing and lower case composition；By 40 Double-ended iron nail is arranged in 4 column, is separated by 90 ° between the column and the column, each column 10 vertical equidistant modes are uniformly inserted into wood-fibred filter The outer surface of core forms the iron nail clump of proper alignment in the periphery of wood-fibred filter core, guarantees that all iron nail tips are in same A arc surface, and each double-ended iron nail must be touched with the dermoskeleton bridge joint of wood-fibred filter core；While double-ended iron nail is installed, Two insulating supports are covered on the outer wall of wood-fibred filter core, for guaranteeing between shell and double-ended iron nail between enough electric discharges Gap；In lower case, successively mounting bracket, fair water cone, the wood-fibred filter core equipped with double-ended iron nail and insulating support, positive wire Logical aperture connects with the outer skeleton of wood-fibred filter core, and minus earth coats insulating layer in upper housing and lower casing external surface；Finally make Upper housing is connected with lower case with flange, centre is sealed with silicagel pad.

2. novel Point Corona Discharge wood-fibred filter core exhaust gas processing device according to claim 1, it is characterised in that wood Several double-ended iron nails of the outer skeleton surface installation of fabric filter element, are formed on its surface the iron nail clump of proper alignment, double-ended iron nail point End is in same arc surface.

3. novel Point Corona Discharge wood-fibred filter core exhaust gas processing device according to claim 1, it is characterised in that Fair water cone and bracket are installed in lower case bottom, in the square hole of the tip insertion bracket of fair water cone, keep fair water cone bottom surface with Bracket it is parallel, after fixed fair water cone, air-flow passes through fair water cone, enters Point Corona Discharge region along its surface, to locate Manage NO in tail gas_X。