CN109595060A - Non-rice habitats mechanically moving tail gas black smoke treatment and purification system and purification method - Google Patents

Non-rice habitats mechanically moving tail gas black smoke treatment and purification system and purification method Download PDF

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Publication number
CN109595060A
CN109595060A CN201811316106.7A CN201811316106A CN109595060A CN 109595060 A CN109595060 A CN 109595060A CN 201811316106 A CN201811316106 A CN 201811316106A CN 109595060 A CN109595060 A CN 109595060A
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China
Prior art keywords
black smoke
tail gas
mechanically moving
barrel
rice habitats
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崔建光
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Chuangyi Environmental Technology (nantong) Co Ltd
Happy Environmental Technology As Of Upper Seabird
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Chuangyi Environmental Technology (nantong) Co Ltd
Happy Environmental Technology As Of Upper Seabird
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Priority to CN201811316106.7A priority Critical patent/CN109595060A/en
Publication of CN109595060A publication Critical patent/CN109595060A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The present invention provides a kind of non-rice habitats mechanically moving tail gas black smoke treatment and purification system, including barrel-type casing, which is characterized in that barrel-type casing one end is arranged the air inlet other end and exhaust outlet is arranged, and is provided with DOC system and CDPF system in barrel-type casing；System further includes an electric heating system, and electric heating system connects the air inlet section side of barrel-type casing.This system black smoke vent gas treatment effect is good, has good ageing resistance and active-passive composite power of regeneration, it is long that DPF filter core maintains gap periods.Removal to non-rice habitats mechanically moving black smoke particle has good practicability and wide applicability, is not influenced by engine exhaust temperature and the deterioration of black smoke particulate emission；Two kinds of means combine, and can also substantially reduce the frequency of use of electric heater, and the black smoke particle for generating the non-rice habitats mechanically moving of different operating conditions, different performance, various years production can obtain relatively good removal.

Description

Non-rice habitats mechanically moving tail gas black smoke treatment and purification system and purification method
Technical field
The present invention relates to environmental technology fields, are specifically related to a kind of non-rice habitats mechanically moving tail gas black smoke processing Purification system.
Background technique
With China's industrialization, the high speed development of urbanization process, airborne fine particulate matter (PM2.5) pollution problem from Regional Typical Case gradually expands to regional, national or even international regions property environmental problem, social concern.Current China Regional PM2.5The combined pollution feature that multi-pollutant drives, more cities are convergent is generally presented in pollution, and pollution frequency is increasingly presented Increase, the trend that coverage expands, pollution level is aggravated, has seriously threatened the health and ecology peace of the people It entirely, is that current social all circles pay high attention to and great environmental problem urgently to be resolved.
Using internal combustion engine as the mechanical equipment of power atmosphere pollution can be discharged because of fuel combustion in use.Except road Outside the motor vehicle of road, a large amount of non-rice habitats mechanically movings mainly make machine including engineering machinery, agricultural machinery, port using internal combustion engine as power Machinery, airport ground servicing equipment etc. in tool, factory, enterprise (field).Compared with road automobile, the main fuel of non-rice habitats mechanically moving For diesel oil and heavy oil, have that type is more, technical level is low, service life is long, fuel consumption is high, maintenance rate bottom and pollutant single machine are arranged The features such as high-volume larger.The correlative study of US and European show it is increasingly significant with road automobile emission control effect, Non-rice habitats mechanically moving is increasingly becoming important air pollution emission source, in air nitrogen oxides and fine particle have Biggish contribution.
In Shanghai, deepening continuously with traditional source of atmospheric pollution preventing and controlling such as this city industry and traffic, non-road The atmosphere polluting problem of road mechanically moving starts to highlight.To understand the type of this city non-rice habitats mechanically moving, ownership, using feelings Condition, oil consumption and discharge status, relevant unit, city have carried out the investigation work of Shanghai City non-rice habitats mechanically moving in the second half year in 2016 Make.Initial investigation results show, the non-rice habitats mechanically moving ownership that Shanghai City registers on the books about at 8~90,000 or so, In, building and municipal works machinery and port make that mechanical mechanical and farm machinery is protected in 5000 or so, enterprise (factory) respectively The amount of having is respectively at 3.8 ten thousand or so.Although the quantity of engineering and port work machinery is relatively fewer, basis from the point of view of ownership The diesel oil of statistics bureau, city consumes industry statistic, and engineering and port make mechanical diesel oil consumption figure and account for about 50% or so, illustrates engineering and port It is totally big compared with high, single machine oil consumption and pollutant emission to make the universal larger, frequency of use of mechanical power, it should cause enough heavy Depending on.
Currently, Shanghai City is in the construction and period of expansion at city and harbour, engineering and port make a large amount of of machinery and use gesture Constantly increase the discharge of non-rice habitats mechanically moving.Effectively to contain non-rice habitats mechanically moving pollutant emission, Shanghai City Intend to make for 2017 (following " about the implementation guideline for promoting this city non-rice habitats mechanically moving prevention and control of air pollution work " Referred to as " implementation guideline "), specify prevention and cure of pollution direction and the major measure of Shanghai City non-rice habitats mechanically moving.But these Measure still has specific landing and supervision problem in the actual operation process, makees mechanical, mesh especially for engineering and port Preceding that there are still the mechanical truth of a matter is unclear, emission level is unknown, administers the problems such as lacking handgrip.Engineering machinery mainly include excavator, Loading machine, scraper, road roller, crane and piling machinery etc..Port make it is mechanical mainly include hoisting machinery, conveying machinery, Fork lift truck, monobucket vehicle, straddle carrier, tractor, carrier etc..
Engineering and the mechanical single machine oil consumption of port work are larger, discharge is higher and uses frequently, are Shanghai City non-rice habitats mechanically movings The emphasis of prevention and cure of pollution.But this city not yet sets up the environmentally friendly management system of non-rice habitats mechanically moving at present, machinery declare and Discharge supervision not yet obtains substantial progress.
In June, 2018, ecological environment portion publication " Chinese automotive environment manages annual report 2018 ", wherein explicitly pointing out: 1.) Automobile pollution is the main reason for causing air pollution；2.) diesel vehicle accounts for the 7.8% of vehicle guaranteeding organic quantity, but contributes to machine The 77.8% of motor-car PM pollution；3.) non-rice habitats mechanically moving, ownership is fewer than motor vehicle very much, but has discharged and motor vehicle phase When black smoke particulate matter.
Therefore, scientifically carry out non-rice habitats mechanically moving tail gas black smoke particulate matter emission reduction in fields such as traffic, environment to close Research on Key preferentially carries out scale application on non-rice habitats mechanically moving and forms technical specification, and science is effectively non- The development of road mechanically moving particulate matter post-processing technology provides key technology support, provides management for traffic, environment etc. are multidisciplinary Decision-making foundation realizes collaboration other field, and the important breakthrough in terms of scientific and technological emission reduction, engineering emission reduction and management emission reduction, is 2018 The implementation in year " winning 3 years action plans of blue sky defended war " provides science and technology support.Meanwhile, it is capable to by non-rice habitats mechanically moving The scientific and technical innovation of grain object emission reduction key technology is converted into actual productivity, peomotes economic transition upgrading, realizes society's warp Ji sustainable development.
Summary of the invention
Technical problem to be solved by the present invention lies in overcome problems of the prior art, provide a kind of non-rice habitats Mechanically moving tail gas black smoke treatment and purification system and purification method.
It is to solve the above-mentioned problems the technical scheme is that such:
Air inlet is arranged in non-rice habitats mechanically moving tail gas black smoke treatment and purification system, including barrel-type casing, barrel-type casing one end, Exhaust outlet is arranged in the other end, is provided with CDPF system and DOC system in barrel-type casing；System further includes an electric heating system, electricity The air inlet section side of heating system connection barrel-type casing.
CDPF system, including wall flow type ceramic a DPF, DPF are honeycomb type cellular structure, one end aperture, one end blocking； Duct micropore size is 8~13 microns；Catalyst is provided on DPF, catalyst is abound on DPF structural body.
The catalyst includes platinum group metallic element, thulium, water, acid and additive；The DPF is being catalyzed Drying is taken out after all infiltrating in the slurry of agent, is attached to catalyst on DPF structural body, attached catalyst thickness 1~3 is micro- Rice.
DOC system is exhaust gas purification system, and DOC system is honeycomb type cellular structure, and material is metal or ceramics, both ends Aperture；It is provided with oxidation catalyst, by the uncombusted further oxygenolysis of exhaust pollutant.
Electric heating system includes an electric heater, and electric heater is connected on the air inlet section side of barrel-type casing, passes through card Hoop is tightly connected；Electric heater is also connected with an air supply device, and the electric heater, air supply device connect a control cabinet.
Temperature sensor is provided on the electric heater, the exhaust end of the barrel-type casing is provided with temperature sensor, The temperature sensor connects the control cabinet.
The purification method of non-rice habitats mechanically moving tail gas black smoke treatment and purification system:
Non-rice habitats mechanically moving in normal work, is not necessarily to external electric heating system, and tail gas flows through the DOC+ in barrel-type casing CDPF system, under the effect of the catalyst, CO gas and HC gas in tail gas are oxidized to CO2Gas and water vapour；Tail gas In black smoke particle be filtered, then using the waste heat of engine exhaust black smoke particle " the secondary combustion being filtered Burn-up " (being also " passive regeneration ")；For black smoke regenerate halfway non-rice habitats mechanically moving (such as: engine exhaust temperature Relatively low or engine black smoke particulate emission is relatively high), when needing black smoke in further cleaning barrel-type casing, external electricity adds Hot systems, under outside heat effect, by barrel-type casing inner exhaust gas black smoke particle whole oxidation processes at CO2Gas is simultaneously discharged, Also it is " initiative regeneration ".
DOC system off gas purification process is as follows:
For row's temperature at 200~300 DEG C, DOC system removes the pernicious gas and part black smoke particle in tail gas, and DOC system is by NO → NO2, NO2As strong oxidizer, the C particle in PM is oxidized to CO2Gaseous molecular enters greatly to penetrate filter wall Gas chemically reacts as follows:
1.) CO+O2→CO2 +Q
2.) HC+O2→CO2 +H2O +Q
3.) NO+O2 →NO2
4.) SOF+O2 → CO2+H2O +Q
CDPF system black smoke particle oxidation process is as follows:
Row's temperature utilizes NO extra in tail gas at 200~300 DEG C2Gas and O2, to the black smoke particle Soot being filtered Oxidation reaction is carried out, black smoke particle is automatically removed, is chemically reacted as follows:
1.) CO+O2 →CO2+Q
2.) HC+O2 →CO2+H2O +Q
3.) Soot+NO2 →CO2 +NO +Q
4.) Soot+O2→CO2 +Q
Soot represents black smoke, and Q represents heat；
When further clearing up black smoke in barrel-type casing, external electric heating system, electrical heating temperature is generally 400~600 DEG C, and main Air inlet in trend barrel-type casing makes the remaining black smoke particle being fixedly arranged on DPF inner wall, is fully oxidized to CO2Gas is simultaneously discharged.
Beneficial effect, system of the present invention is good to black smoke particle, vent gas treatment effect, has good anti-aging Property and active-passive composite power of regeneration, DPF filter core maintain gap periods it is long.Removal to non-rice habitats mechanically moving black smoke particle, With good practicability and wide applicability, do not influenced by engine exhaust temperature and the deterioration of black smoke particulate emission；Two Kind means combine, and can also substantially reduce the frequency of use of electric heater, make different operating conditions, different performance, various years production Non-rice habitats mechanically moving generate black smoke particle, relatively good removal can be obtained.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is the overall structure diagram of purification system of the present invention.
Fig. 2 is that purification system of the present invention removes heater structure schematic diagram.
Fig. 3 is purification system the schematic diagram of the section structure of the present invention.
Fig. 4 is purification system heater control principle schematic diagram of the present invention.
Fig. 5 is that purification system of the present invention is used for fork truck operation schematic diagram.
Fig. 6 is purification system of the present invention for fork truck work cleaning principle schematic diagram.
Fig. 7 is purification system of the present invention for fork truck plug-in purification schematic diagram.
Fig. 8 is purification system of the present invention for fork truck plug-in cleaning principle meaning diagram.
Fig. 9 is purification system operating temperature of the present invention and CO2Concentration curve.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Conjunction is specifically illustrating, and the present invention is further explained.
Diesel Engine After-treatment Technology research has occurred many control techniques around particulate matter emission reduction, mainly includes diesel oil Machine oxidation catalytic converter (Diesel Oxidation Catalyst, DOC), particle oxidation catalyzer (Particulate Oxidation Catalyst, POC), grain catcher (Diesel Particulate Filter, DPF) technology.
Wall flow type ceramic DPF, micropore size: 8 ~ 13 microns are used in the present embodiment.The filter effect of black smoke particle: 90 ~99.9% (PM2.5)。
DPF carrier material mainly has cordierite, silicon carbide, ceramic fibre, foamed ceramics, metal mesh, aluminium titanates etc., different Material filter efficiency, compactness, heat resistance, mechanical strength, machinability and in terms of respectively have superiority and inferiority.Wherein, Cordierite and silicon carbide have preferable heat resistance and higher filter efficiency, are the carrier materials of two kinds of current more mainstreams. The material of DPF carrier the most universal is cordierite, and filter efficiency is high, and advantage of lower cost has certain heat resistance, lower Thermal expansion coefficient and good thermal shock resistance, can be processed into the carrier of monoblock type.Another kind replaces the material of cordierite It is silicon carbide (SiC), which has better heat-resisting, corrosion-resistant and heating conduction, and maximum operation (service) temperature is up to 2000 DEG C.Processing When the carrier of large volume need formed by several pieces, need each other with special vitrified bonding resistant to high temperature be bonded to one it is whole Body.For the thermal shock resistance and heat resistance for further increasing SiC material, there are two types of SiC ameliorative filtering materials.First is that weight Crystalline silicon carbide (RSiC), the material void rate reach 60%, and pore-size distribution can reach 90% or more in 20 microns The pressure drop of grain object filter efficiency and very little, maximum carbon deposition quantity is up to 14.7g/L.Another kind is silicon silicon carbide (Si- SiC), which is greater than 65%, and average pore size is also 20 microns, has good heat shock resistance and durability Energy.
Regenerative process is most important for DPF, and the difference of the used means of particulate matter is eliminated according to burning, is divided into actively again The raw and big approach of passive regeneration two.Initiative regeneration is to be removed burning particulate matter in the way of extra power heating, including electricity Heat regeneration, oil jetting combustion regeneration, microwave heating regeneration, reverse jet regenerating, the regeneration of big load etc..
Initiative regeneration needs to consume additional energy, and system structure and control strategy are complex, also needs to a certain extent Want the help of catalyst.
In passive regeneration system, DPF is generally required to carry catalyst coat or is coupled the DOC of upstream.According to regenerated group Conjunction mode is different, can form many regeneration techniques, wherein cyclic regeneration (DOC+DPF, i.e. Continuously Regenerating Trap, CRT), continuous catalysis regenerate (DOC+CDPF, Catalyzed Continuously Regenerating Trap, CCRT), catalytic combustion regenerative (CDPF) etc..
The regeneration for the Heater+DOC+CDPF system for being applied to non-rice habitats machinery is studied in the present embodiment, benefit The characteristics of passive regeneration may be implemented with the non-rice habitats mechanical most of the time, by dividing each factor during its passive regeneration Analysis, studies the control strategy that the system realizes reliable initiative regeneration.
Referring to Fig. 1, barrel-type casing 1 is used for vent gas treatment, and one end is air inlet, and the other end is exhaust outlet, is installed on non-road In the mechanically moving equipment of road, such as engineering machinery, external dismountable heater 2 is provided in its air inlet section, heater 2 is Cylindrical shape is connected on barrel-type casing 1 by clip, so being also equipped with cylinder-shaped interface on corresponding barrel-type casing 1.Heating Device 2 uses electric heating, adds black smoke carbon dust oxygenolysis of the thermogenetic heat for will add up in barrel-type casing 1 at CO2Gas After be discharged.Heater 2 is external use if necessary, when not needed, referring to Fig. 2, at external heater, covers capping 3 for blocking heater sealing joint, to save the installation space of clarifier.
Referring to Fig. 3, inside the barrel-type casing of clarifier 1, DOC system 4 and CDPF system 5 is respectively set.
CDPF is the DPF for having catalyst, under precious metal catalyst effect, when delivery temperature is at 200~300 DEG C, DOC is by NO → NO2, NO2As strong oxidizer, carbon particle in PM is oxidized to CO2Gaseous molecular, to penetrate filter wall entrance Atmosphere restores the trapping ability of DPF, avoids artificial pro-active intervention regenerative process.Key reaction formula:
1.) CO+O2→CO2+Q
2.) HC+O2 →CO2+H2O +Q
3.) Soot+NO2 →CO2 +NO +Q
4.) Soot+O2→CO2++Q
Soot represents black smoke, and Q represents heat.Referring to Fig. 9.
Diesel oxidation converter (DOC) is the common effective measures of unburned CO, HC and SOF in purification exhaust, The harmful components such as polycyclic aromatic hydrocarbons (PAH) and acetaldehyde can also be effectively removed simultaneously.DOC is with platinum (Pt), palladium (Pd) for catalyst.
Diesel oxidation converter (DOC) is the Soot using the ceramic honey comb of through type or metal as carrier, in DOC Under the effect of the catalyst by NO2And O2It is oxidized to CO2Gas, so that part solves black smoke particle issues, clean-up effect is 50% Left and right.DOC light weight, small in size, variable dimension, are readily integrated into exhaust after treatment system.
DOC (exhaust purifier): by the uncombusted further oxygenolysis of tail gas
1.) CO+O2 →CO2 2.) HC+O2→CO2+H2O 3.) SOF+O2 → CO2+H2O
Referring to Fig. 4, it is connected with air supply device 6 on the heaters, air supply device 6 is air blower, for fresh air to be sent to In clarifier cylinder.It is additionally provided with temperature sensor 7 on heater, HEATER FOR MEASURING heat gas temperatures are used for, in addition net Change 1 tail portion of device barrel-type casing and be also provided with temperature sensor 7, for measuring the gas temperature of end discharge, the adjustment that is convenient for reference adds Hot device power.The components such as the heater 2, air supply device 6, temperature sensor 7 connect an electric control box 8, for controlling Heating system work and supervisory control system running.
Referring to Fig. 5 ~ 8, non-rice habitats mechanically moving in normal work, is not necessarily to external electric heating system, and tail gas flows through tubular The intracorporal DOC+CDPF system of shell；The uncombusted tail gas of diesel engine and part black smoke particle are carried out oxygenolysis by DOC, are being catalyzed Under the action of agent, remaining black smoke particle is further oxidized to CO using the waste heat of tail gas by CDPF2Gas discharge；
If DOC+CDPF utilizes catalyst, can not whole black smoke particles in oxidized tail gas, need further to clear up barrel-type casing When interior black smoke, external electric heating system, under outside heat effect, simultaneously by the intracorporal black smoke particle whole oxidation processes of cylinder outer race Discharge.
DOC waste gas purification process is as follows:
For row's temperature at 200~300 DEG C, DOC system removes the pernicious gas and part black smoke particle in tail gas, and DOC system is by NO →NO2, NO2As strong oxidizer, C particle in PM is oxidized to CO2Gaseous molecular is changed so that penetrating filter wall enters atmosphere It is as follows to learn reaction:
1.) CO+O2→CO2 +Q
2.) HC+O2→CO2 +H2O +Q
3.) NO+O2 →NO2
4.) SOF+O2 → CO2+H2O+Q is referring to Fig. 9.
CDPF system black smoke particle oxidation process is as follows:
Row's temperature utilizes NO extra in tail gas at 200~300 DEG C2Gas and O2The black smoke particle being filtered is carried out Oxidation automatically removes black smoke, chemically reacts as follows:
1.) CO+O2 →CO2+Q
2.) HC+O2→CO2+H2O +Q
3.) Soot+NO2 →CO2 +NO +Q
4.) Soot+O2→CO2 +Q
Soot represents black smoke, and Q represents heat；Referring to Fig. 9.
When further clearing up black smoke in barrel-type casing, external electric heating system, 400~600 DEG C of electrical heating temperature, and actively To barrel-type casing air inlet, make it is remaining be fixedly arranged at black smoke particulate matter, all aoxidize and be discharged, referring to Fig. 9.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed range of the invention patent is by the attached claims Book and its equivalent define.

Claims (10)

1. non-rice habitats mechanically moving tail gas black smoke treatment and purification system, including barrel-type casing, which is characterized in that barrel-type casing one Exhaust outlet is arranged in the end setting air inlet other end, is provided with CDPF system and DOC system in barrel-type casing；System further includes an electricity Heating system, electric heating system connect the air inlet section side of barrel-type casing.
2. non-rice habitats mechanically moving according to claim 1 tail gas black smoke treatment and purification system, which is characterized in that CDPF System, including wall flow type ceramic a DPF, DPF are honeycomb type cellular structure, one end aperture, one end blocking；Duct aperture 8~13 Micron；Catalyst is provided on DPF, catalyst is abound on DPF structural body.
3. non-rice habitats mechanically moving according to claim 2 tail gas black smoke treatment and purification system, which is characterized in that described Catalyst includes platinum group metallic element, thulium, water, acid and additive；The DPF is complete in the slurry of catalyst Drying is taken out after portion's infiltration, is attached to catalyst on DPF structural body, 1~3 micron of attached catalyst thickness.
4. non-rice habitats mechanically moving according to claim 1 tail gas black smoke treatment and purification system, which is characterized in that DOC System is exhaust gas purification system, and DOC system is honeycomb type cellular structure, is provided with oxidation catalyst, and diesel engine is unburned The further oxygenolysis of most tail gas.
5. non-rice habitats mechanically moving according to claim 1 tail gas black smoke treatment and purification system, which is characterized in that electricity adds Hot systems include an electric heater, and electric heater is connected on the air inlet section side of barrel-type casing, is tightly connected by clip；Electricity Heater is also connected with an air supply device, and the electric heater, air supply device connect a control cabinet.
6. non-rice habitats mechanically moving according to claim 5 tail gas black smoke treatment and purification system, which is characterized in that described Temperature sensor is provided on electric heater, the exhaust end of the barrel-type casing is provided with temperature sensor, the temperature sensing Device connects the control cabinet.
7. the non-rice habitats mechanically moving purification method of tail gas black smoke treatment and purification system,
Non-rice habitats mechanically moving in normal work, is not necessarily to external electric heating system, and tail gas flows through the DOC+ in barrel-type casing CDPF system；The uncombusted tail gas of diesel engine and part black smoke particle are carried out oxygenolysis by DOC, under the effect of the catalyst, Remaining black smoke particle is further oxidized to CO using the waste heat of tail gas by CDPF2Gas discharge；When needs further clear up cylinder In shape shell when black smoke, external electric heating system will be in barrel-type casing at the whole oxidation of black smoke particle under outside heat effect It manages and is discharged.
8. the purification method of non-rice habitats mechanically moving tail gas black smoke treatment and purification system according to claim 7, special Sign is that DOC system off gas purification process is as follows:
For row's temperature at 200~300 DEG C, DOC system removes the pernicious gas and part black smoke particle in tail gas, and DOC system is by NO →NO2, NO2As strong oxidizer, C particle in PM is oxidized to CO2Gaseous molecular is changed so that penetrating filter wall enters atmosphere It is as follows to learn reaction:
1.) CO+O2 →CO2 +Q
2.) HC+O2→CO2 +H2O +Q
3.) NO+O2 →NO2
4.) SOF+O2 → CO2+H2O +Q。
9. the purification method of non-rice habitats mechanically moving tail gas black smoke treatment and purification system according to claim 7, special Sign is that CDPF system black smoke particle oxidation process is as follows:
Row's temperature utilizes NO extra in tail gas at 200~300 DEG C2Gas or O2Oxygen is carried out to the black smoke particle being filtered Change, automatically remove black smoke, chemically reacts as follows:
1.) CO+O2 →CO2+Q
2.) HC+O2 →CO2+H2O +Q
3.) Soot+NO2 →CO2 +NO +Q
4.) Soot+O2→CO2 +Q
Soot represents black smoke, and Q represents heat.
10. the purification method of non-rice habitats mechanically moving tail gas black smoke treatment and purification system according to claim 7, special Sign is, when further clearing up black smoke in barrel-type casing, external electric heating system, 400~600 DEG C of electrical heating temperature, and actively to Barrel-type casing air inlet, make it is remaining be fixedly arranged at black smoke particulate matter, all aoxidize and be discharged.
CN201811316106.7A 2018-11-07 2018-11-07 Non-rice habitats mechanically moving tail gas black smoke treatment and purification system and purification method Pending CN109595060A (en)

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Application publication date: 20190409