CN108554150A - A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas - Google Patents
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas Download PDFInfo
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- CN108554150A CN108554150A CN201810726442.2A CN201810726442A CN108554150A CN 108554150 A CN108554150 A CN 108554150A CN 201810726442 A CN201810726442 A CN 201810726442A CN 108554150 A CN108554150 A CN 108554150A
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- exhaust gas
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- volatile organic
- organic exhaust
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- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 41
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 53
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 109
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 99
- 238000001179 sorption measurement Methods 0.000 claims description 40
- 230000003197 catalytic effect Effects 0.000 claims description 30
- 239000003054 catalyst Substances 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 239000003063 flame retardant Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 8
- 239000002274 desiccant Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 239000004005 microsphere Substances 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims description 4
- 229910001120 nichrome Inorganic materials 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 abstract description 9
- 238000011282 treatment Methods 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006555 catalytic reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000003795 desorption Methods 0.000 description 5
- 239000010805 inorganic waste Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- -1 oxygen hydro carbons Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/60—Combustion in a catalytic combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
The invention discloses a kind of pre-heated catalytic combustion systems of purifying volatile organic exhaust gas, it relates generally to exhaust-gas treatment field, including compression storage element, absorbing unit and the catalytic combustion unit being sequentially communicated, VOCs exhaust gas is handled by three units, it can either ensure purification efficiency, by hot loss of energy can be reduced, and it is also beneficial to recycling organic solvent, to which the economic benefit of VOCs exhaust-gas treatments be greatly improved.
Description
Technical field
The present invention relates to field exhaust-gas treatment field, more specifically, it relates to a kind of purifying volatile organic exhaust gas
Pre-heated catalytic combustion system.
Background technology
Volatile organic matter (Volatileorganiccompounds, VOCs) is typically referred at 25 DEG C, saturated vapor
Organic compound of the pressure more than 133Pa, main component are hydro carbons, halogenated hydrocarbon, oxygen hydro carbons, sulphur hydro carbons, nitrogen hydro carbons, aromatic hydrocarbon
And polycyclic aromatic hydrocarbon.VOCs is a kind of in petroleum chemical industry, spraying paint industry, paint production and processing industry, rubber life
The common agents in the production processes such as processing industry, printing dyeing are produced, resulting VOCs exhaust gas usually has ingredient
Complexity, concentration of emission change greatly, be not readily dissolved in water, containing sour or alkali the characteristics of and be difficult to handle.
Currently, the conventional treatment method for VOCs has：Condensation method is mainly used for recycling high concentration, higher boiling, small tolerance
Single-component gas, it is low to the waste gas recovery rate of complex component；Absorption process, mainly for atm number, high concentration, deliquescent useless
Gas, but it is low to the exhaust treatment efficiency of dissolubility difference；Active carbon adsorption is suitable for the VOCs exhaust gas of low concentration, atm number, living
Property charcoal be easily absorbing saturation, replace the somewhat expensive of adsorbent and activated carbon after adsorption saturation need to be used as it is a kind of dangerous useless
Object processing；Combustion method, mainly for high concentration, the organic exhaust gas of complex component, this method is simple for process, removal efficiency is high.And
Absorption, burning combined techniques, are not only suitable for the exhaust gas of processing various concentration and different component, meanwhile, removal efficiency is high.
And there are two types of the methods of operation for the conventional apparatus of absorption, burning combined techniques processing VOCs exhaust gas：(1) straight-line, directly
Organic exhaust gas after desorption is transported to heat exchanger and catalytic combustor carries out combustion degradation, the deficiency of this method is that system opens
Dynamic initial stage, part organic exhaust gas generated harmful intermediate production due to cannot fully burn since the temperature of catalytic combustor is relatively low
Object, or without burning by direct emission, and the thermal energy in tail gas is difficult to make full use of；(2) internal-circulation type, the organic waste after desorption
It is recycled into activated carbon adsorption device after gas burning to be desorbed as desorption gas, this method is disadvantageous in that system knot
Structure is more complex, and recyclegas is likely to result in organic exhaust gas excessive concentration inside activated carbon adsorption device, and local temperature is excessively high, leads
Cause the security risks such as explosion, on fire.
Thus, it is necessary to exhaust treatment system that is a kind of safe and efficient and can saving vast resources again is provided.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of the pre- of purifying volatile organic exhaust gas
Hot type catalytic combustion system can not only fast and effeciently remove the VOCs exhaust gas in removing exhaust gas, while it also can be to recycling
A large amount of organic solvent, thus environmental protection and resource-effective aspect are improved all with higher benefit.
To achieve the above object, the present invention provides following technical solutions：A kind of preheating of purifying volatile organic exhaust gas
Formula catalytic combustion system has been sequentially communicated compression storage element, absorbing unit and catalytic combustion unit, the compression storage element
Including container chamber, VOCs exhaust gas is passed through the air blower into container chamber and is connected to the regulating valve of container chamber and absorbing unit, and
And desiccant container is carried between container chamber and air blower；The absorbing unit includes that the condenser being sequentially communicated and activated carbon are inhaled
Adsorption device, band having heaters in the activated carbon adsorption device, and activated carbon adsorption device respectively with catalytic combustion unit and drum
Wind turbine is connected；The catalytic combustion unit includes catalytic bed and burner, and the burner is toward catalytic bed, the catalysis
Bed is connected with chimney, and heat exchanger, cold flow pipe and the absorbing unit and burner phase of the heat exchanger are carried in the chimney
Connection.
By using above-mentioned technical proposal, VOCs exhaust gas is blown into high flow velocities in container chamber by air blower, is then grasped
Valve is made adjustments, to change the relationship between the intake velocity of container chamber and outlet speed, so that VOCs exhaust gas can hold
Into row buffering in device chamber, avoiding VOCs exhaust gas, flow velocity is excessive in systems, and influences the efficiency of purification, and then reduces pair
System causes the possibility corroded.
Secondly, condenser can condense the VOCs exhaust gas come out from container chamber, and activated carbon adsorption device can
Remaining VOCs compositions in exhaust gas are adsorbed, remaining exhaust gas will enter in catalytic combustion unit later.Until work
Property charcoal adsorbent equipment adsorption saturation when, at this point, close VOCs exhaust gas entrance, and using heater to activated carbon adsorption fill
Activated carbon in setting is heated so that the VOCs exhaust gas adsorbed desorbs, and is back at air blower.
And the VOCs exhaust gas of catalytic combustion unit is entered, it can be preheated first by heat exchanger, it will be flowed later
To being ignited at burner, exhaust gas will be flow at catalytic bed later, remaining organic under the action of catalyst and residual temperature
Exhaust gas will be by catalysis oxidation.Final exhaust gas after above-mentioned processing, can also using heat exchanger, using waste heat into
The VOCs exhaust gas entered in heat exchanger is heated, and to help to increase the temperature of VOCs exhaust gas, and then is not only increased final
The efficiency of combustion of exhaust gas, while decreasing the waste of thermal energy.
Preferably, if being provided with dry liquids attachment net between the top and bottom of the container chamber, meanwhile, the bottom of container chamber
Portion carries discharge valve.
By using above-mentioned technical proposal, it is the net worked out by steel wire that liquid, which adheres to net, can be VOCs exhaust gas
Attachment point is provided, adheres to online liquefaction in liquid on the one hand facilitate VOCs exhaust gas, to the organic solvent after liquefaction
Guide functions are carried out.On the other hand, liquid attachment net can also play a role in filtering to VOCs exhaust gas, reduce excessive solid
Sundries enters in system, and causes the damage of system.Furthermore when the organic solvent in container chamber is excessive, work people
As long as member opens discharge valve, it will be able to make under pressure effect of the organic solvent in container chamber, is delivered to appointed place, to
Just improve transfer efficiency.
Preferably, cooling pipe of the distribution for cooling down container chamber internal waste gas on the peripheral surface of the container chamber.
By using above-mentioned technical proposal, cooling pipe can carry out the VOCs exhaust gas in container chamber outside container chamber cold
It is solidifying, the case where due to the environment in container chamber being high pressure low temperature, so VOCs exhaust gas is easier to liquefy.To be conducive to carry
The purification efficiency of high VOCs exhaust gas.
Preferably, the quantity of the activated carbon adsorption device is more than one, and is arranged in parallel.
By using above-mentioned technical proposal, in this way when one of activated carbon adsorption device adsorption saturation, work
As long as VOCs exhaust gas is switched to other activated carbon adsorption device by personnel, on the one hand ensure to VOCs exhaust gas
Continuous treatment, on the other hand will not influence the desorption operations of activated carbon adsorption device.And then improve absorbing unit
Integrated operation efficiency.
Preferably, the heater is the hot blast pipe and heater strip being connected with chimney, and the hot blast pipe is toward activity
The activated carbon of charcoal adsorbent equipment, and heater strip is between hot blast pipe and activated carbon.
By using above-mentioned technical proposal, since the exhaust gas that chimney comes out substantially has been inorganic waste gases, but it is also
It with a large amount of waste heat, thus is utilized to carry out desorption operations to activated carbon adsorption device, can further increase to thermal energy
Reasonable utilization rate.Meanwhile the hot wind that heater strip can come out hot blast pipe heats, to ensure that it can reach required
Temperature.
Preferably, catalyst is carried in the catalytic bed, the catalyst is cellular, and the hole of catalyst is toward combustion
Burner.
By using above-mentioned technical proposal, since catalyst is into cellular, be conducive to increase in this way useless after burning
The area that gas is contacted with catalyst, to improve the catalysis oxidation efficiency of exhaust gas.
Preferably, it is equipped with fire-retardant cover before the catalytic bed and burner, the cover mouth of the fire-retardant cover is toward burner
Side.
By using above-mentioned technical proposal, fire-retardant cover is conducive to play flame certain barrier effect, can keep away in this way
Exempt from flame and be directly burned to catalytic bed, and causes the damage of catalyst.And fire-retardant cover is toward burner, it in this way can be to flame
Play the role of reverse leading, to further reduced flame combustion to catalytic bed possibility.
Preferably, the catalyst is made of nichrome, clay and ceramic microsphere, and the mass ratio of three is 10：7：
3。
By using above-mentioned technical proposal, nichrome is the catalyst of good catalysis oxidation, and the addition of clay is not
The ratio of briquetting of catalyst can be only improved, while it is conducive to the adhesion strength of raising catalytic inner, to help to extend
The service life of catalyst.Moreover, because there are many holes on the surface of ceramic microsphere, thus it is also beneficial to improve catalyst
With the contact area of exhaust gas.
Preferably, it is equipped with fire-retardant cover before the catalytic bed and burner, the cover mouth of the fire-retardant cover is toward burner
Side.
By using above-mentioned technical proposal, fire-retardant cover is conducive to play flame certain barrier effect, can keep away in this way
Exempt from flame and be directly burned to catalytic bed, and causes the damage of catalyst.And fire-retardant cover is toward burner, it in this way can be to flame
Play the role of reverse leading, to further reduced flame combustion to catalytic bed possibility.
Preferably, spray column is carried between the chimney and catalytic bed, the spray liquid of the spray column is hydrogen peroxide and satisfies
With the mixed liquor of calcium hydroxide.
By using above-mentioned technical proposal, since hydrogen peroxide is easy to happen point of itself in the case of acid or neutrality
Solution generates water and oxygen, and under alkaline case, longer time can be preserved.Herein by hydrogen peroxide and saturation hydroxide
Calcium carries out mixing and is used as spray liquid, is conducive to extend the activity time of spray liquid in this way.
In addition, due to after catalysis burning, the main ingredient of VOCs exhaust gas become carbon dioxide, sulfur dioxide and
The inorganic waste gases such as water vapour and a small amount of organic exhaust gas.And the calcium hydroxide in spray liquid can carry out subdivision with inorganic waste gases
Solution reacts and generates calcium carbonate and calcium sulfate precipitation.At this point, the acid-base value of spray liquid tends to neutral or faintly acid between being, this
Sample hydrogen peroxide will decompose, and the oxygen of generation can carry out oxidation reaction to remaining micro organic exhaust gas, thus into one
Step improves the processing capacity to VOCs exhaust gas.
Preferably, waterproof ultraviolet lamp is carried inside the spray column.
By using above-mentioned technical proposal, since the decomposition of hydrogen peroxide will produce a large amount of oxygen, and ultraviolet light can promote
So that oxygen is reacted and generates ozone, and ozone will be far longer than the oxidability of organic exhaust gas common oxygen, to
Also the efficiency of processing VOCs exhaust gas is just further improved.
In conclusion the invention has the advantages that：
1, the VOCs exhaust gas for entering catalytic combustion unit is preheated using the waste gas residual heat after burning, can not only be carried in this way
High burning efficiency, while decreasing the waste of waste heat；
2, the difference of airspeed into airspeed and is gone out by control container chamber so that container chamber can play VOCs in the work of buffering
With, be conducive to improve total system safety；
3, activated carbon adsorption device is heated using the heating by the exhaust gases after burning, is solved to be conducive to VOCs exhaust gas
It inhales, to which the operating efficiency of activated carbon adsorption device can not only be improved, while also further improving and effect is utilized to waste heat
Rate.
Description of the drawings
Fig. 1 is the structural schematic diagram of the pre-heated catalytic combustion system of the purifying volatile organic exhaust gas of embodiment one；
Fig. 2 is that the structural diagrams of the activated carbon adsorption device of embodiment one are intended to；
Fig. 3 is the structural schematic diagram of the catalytic combustion unit of embodiment one；
Fig. 4 is the structural schematic diagram of the container chamber of embodiment two；
Fig. 5 is the structural schematic diagram of the pre-heated catalytic combustion system of the purifying volatile organic exhaust gas of embodiment three；
Fig. 6 is that the structural diagrams of the activated carbon adsorption device of embodiment three are intended to；
Fig. 7 is the structural schematic diagram of the catalytic combustion unit of example IV；
Fig. 8 is the structural schematic diagram of the pre-heated catalytic combustion system of the purifying volatile organic exhaust gas of embodiment five；
Fig. 9 is the structural schematic diagram of the spray column of embodiment five.
Reference numeral：1, storage element is compressed；11, air blower；12, container chamber；121, discharge valve；122, cooling tube；
123, liquid adheres to net；13, regulating valve；14, desiccant container；2, absorbing unit；21, condenser；22, activated carbon adsorption fills
It sets；221, heater；2211, hot blast pipe；2212, heater strip；223, activated carbon block；224, switching valve；225, valve is opened and closed；3, it urges
Change fuel element；31, catalytic bed；32, burner；33, heat exchanger；34, fire-retardant cover；4, chimney；5, spray column；51, waterproof is purple
Outer lamp.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one：
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas is sequentially communicated and is stored for compression as shown in Fig. 1
Unit 1, absorbing unit 2 and catalytic combustion unit 3.Wherein, compression storage element 1 is mainly by 12 groups of air blower 11 and container chamber
At wherein one end of air blower 11 is directly connected at VOCs exhaust gas generations, and the other end is connected with container chamber 12, and container
Chamber 12 is connected with absorbing unit 2.Meanwhile regulating valve 13 is also carried between container chamber 12 and absorbing unit 2, regulating valve 13 can
The airspeed that goes out of container chamber 12 is regulated and controled.VOCs exhaust gas can be blown into container chamber by air blower 11 with high flow velocities in this way
In 12, regulating valve 13 is then operated, to adjust the relationship of the intake velocity and outlet speed of container chamber 12,12 energy of such container chamber
It is enough that cushioning effect is played to VOCs exhaust gas, it ensure that the stability that VOCs exhaust gas flows in systems.
In conjunction with shown in attached drawing 1 and attached drawing 2, absorbing unit 2 is mainly made of condenser 21 and activated carbon adsorption device 22,
21 one end of middle condenser is connected with regulating valve 13, and the other end is connected with the bottom of activated carbon adsorption device 22.Activated carbon
The quantity of adsorbent equipment 22 can determine that the quantity of activated carbon adsorption device 22 is two herein according to actual needs, also,
Two activated carbon adsorption devices 22 are arranged in parallel.In addition, carrying activated carbon block disposed in parallel in activated carbon adsorption device 22
223, and property charcoal adsorbent equipment band having heaters 221 below activated carbon block.And the top of two activated carbon adsorption devices 22 is divided equally
It is not connected with air blower 11 and catalytic combustion unit 3, the top and bottom of each activated carbon adsorption device 22 are respectively here
With switching valve 224 and open and close valve 225.In this way when one of 22 adsorption saturation of activated carbon adsorption device, valve is opened and closed
225 can close the activated carbon adsorption device 22 so that exhaust gas cannot be introduced into activated carbon adsorption device 22.Simultaneously.Separately
Keying valve 225 on one activated carbon adsorption device 22 will be opened.And in this process, open and close the activity that valve 225 is closed
Heater 221 in charcoal adsorbent equipment 22 will heating of Activated carbon block so that VOCs exhaust gas desorbs, and switching valve at this time
224 will make the activated carbon adsorption device 22 be connected to air blower 11 and be disconnected with catalytic combustion unit 3, after desorbing in this way
VOCs exhaust gas, which will flow back, to be continued to handle.And another activated carbon adsorption device 22 is under the doing of switching valve 224 and air blast
Machine 11 disconnects, and is connected to catalytic combustion unit 3.To also ensure that the continuous production of absorbing unit 2, and then significantly
Improve the efficiency of whole waste gas cleaning system.
In addition, in conjunction with shown in attached drawing 1 and attached drawing 3, catalytic combustion unit 3 includes mainly catalytic bed 31 and burner 32,
Wherein burner 32 is connected to catalytic bed 31, and burner 32 is toward catalytic bed 31.And catalytic bed 31 also with 4 phase of a chimney
Connection.Meanwhile between chimney 4 and catalytic bed 31 band there are one heat exchanger 33, hot-fluid pipe in heat exchanger 33 and catalytic bed 31 and
Chimney 4 is connected, and cold flow pipe is connected with absorbing unit 2 and burner 32.Exhaust gas after adsorbing in this way can be fired by catalysis
Exhaust gas heating after burning, so cycle are conducive to the utilization rate for improving organic exhaust gas to waste heat.In addition, when burned VOCs is useless
When gas can not burn because concentration is too low, fuel can be added to burner and burnt to VOCs exhaust gas.
Embodiment two：
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas, as shown in Fig. 4, the basis based on embodiment one
On, the peripheral surface of container chamber 12 also carries cooling tube 122, and being flowed in cooling tube 122 has coolant liquid.And the coolant liquid can be to holding
VOCs exhaust gas in device chamber 12 is cooled down, and the liquefaction efficiency of VOCs exhaust gas is contributed to.Meanwhile 12 top and bottom of container chamber
If dry liquids attachment net 123 is connected between, liquid attachment 123 quantity of net can be determined according to actual conditions.It is attached by liquid
Attachment point can be provided for VOCs exhaust gas by net 123, on the one hand be conducive to the liquefaction efficiency for improving VOCs exhaust gas, another party in this way
Face can also improve and play guide functions to the organic solvent after liquefaction, can flow to 12 bottom of container chamber as early as possible.Furthermore
12 bottom of container chamber herein also carries discharge valve 121, and in this way when the organic solvent in container chamber 12 is excessive, work people
As long as member opens discharge valve 121, it will be able to make under pressure effect of the organic solvent in container chamber 12, is delivered to appointed place,
To also just improve transfer efficiency.
Embodiment three：
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas, in conjunction with shown in attached drawing 5 and attached drawing 6, based on implementation
On the basis of example two, heater 221 is the hot blast pipe 2211 being connected to chimney 4 and heater strip 2212,2211 court of hot blast pipe herein
To in the activated carbon of activated carbon adsorption device 22, and heater strip 2212 is between hot blast pipe 2211 and activated carbon.Such side
Face can efficiently utilize the waste gas residual heat after burning, on the other hand also can be by heater strip 2212 to coming from chimney
4 exhaust gas is heated, and required temperature is reached, and is desorbed in this way convenient for activated carbon.
Example IV：
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas, as shown in Fig. 7, the basis based on embodiment three
On, catalyst in catalytic bed 31 is at cellular, and its hole is toward burner 32.Meanwhile catalyst 311 is closed by nickel chromium triangle
Gold, clay and ceramic microsphere composition, and the mass ratio of three is 10：7：3.It so on the one hand can under the action of nichrome
Improve exhaust gas the catalysis oxidation efficiency, another aspect clay be conducive to improve catalyst structural strength, furthermore ceramic microsphere and
The hole of catalyst itself all increases the area of catalyst and exhaust gas contact, is conducive to the catalysis oxidation for improving exhaust gas in this way
Efficiency.In addition, also there are one cover mouths towards the fire-retardant cover 34 of burner 32 for band between catalytic bed 31 herein and burner 32, this
Sample can reduce the probability that flame is directly burned to catalyst, to be conducive to extend the service life of catalyst.
Embodiment five：
A kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas, in conjunction with shown in attached drawing 8 and attached drawing 9, based on implementation
On the basis of example four, spray column 5 is carried between chimney 4 and catalytic bed 31, specific location is between heat exchanger 33 and chimney 4.And
And the spray liquid of spray column 5 is the mixed liquor of hydrogen peroxide and saturated calcium hydroxide herein, volume ratio is that molar ratio is 2；1.Due to
By catalysis burn after VOCs exhaust gas main ingredient become the inorganic waste gases such as carbon dioxide, sulfur dioxide and water vapour and
A small amount of organic exhaust gas.And the calcium hydroxide in spray liquid can carry out metathesis reaction with inorganic waste gases and generate calcium carbonate
And calcium sulfate precipitation.At this point, the acid-base value of spray liquid tends to neutral or faintly acid between being, such hydrogen peroxide will occur point
The oxygen of solution, generation can carry out oxidation reaction to remaining micro organic exhaust gas, to further improve to VOCs exhaust gas
Processing capacity.
In addition, carrying waterproof ultraviolet lamp 51 inside spray column 5, the ultraviolet light that waterproof ultraviolet lamp 51 generates can promote
So that the oxygen that decomposing hydrogen dioxide solution generates is reacted and generates ozone, and ozone will be far longer than the oxidability of organic exhaust gas
Common oxygen, to also just further improve the efficiency of processing VOCs exhaust gas.
Furthermore also connection is there are one desiccant container 14 between air blower 11 and container chamber 12, in desiccant container 14
Drier selection can be selected according to actual conditions, in this way can be right herein using drier such as aluminium oxide and alum
VOCs exhaust gas predrainages, to be conducive to improve the purity of the organic solvent to liquefy.And desiccant container 14 herein
Quantity is two, and at being arranged in parallel.Meanwhile chimney be also respectively connected with two desiccant containers 14 it is logical, in this way when one
When drier in desiccant container 14 absorbs water saturation, VOCs exhaust gas can be switched to another drier appearance
In device 14, after funnel 4 in burn after hot-air the drier of saturation can be dried, to be also achieved that it is dry
The recycling of drying prescription.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (10)
1. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas has been sequentially communicated compression storage element (1), has inhaled
Coupon member (2) and catalytic combustion unit (3), it is characterised in that：The compression storage element (1) includes container chamber (12), incites somebody to action
VOCs exhaust gas is passed through to the regulating valve of air blower (11) and connection container chamber (12) and absorbing unit (2) in container chamber (12)
(13), desiccant container and between container chamber (12) and air blower (11) is carried（14）；The absorbing unit (2) includes successively
The condenser (21) and activated carbon adsorption unit of connection, the interior band having heaters (221) of the activated carbon adsorption device (22), and it is living
Property charcoal adsorbent equipment (22) is connected with catalytic combustion unit (3) and air blower (11) respectively；Catalytic combustion unit (3) packet
Include catalytic bed (31) and burner (32), the burner (32) is toward catalytic bed (31), the catalytic bed (31) and chimney
(4) be connected, and carry heat exchanger (33) in the chimney (4), the cold flow pipe of the heat exchanger (33) and absorbing unit (2) and
Burner (32) is connected.
2. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 1, feature exist
In：Several steel wires (123) are provided between the top and bottom of the container chamber (12), meanwhile, the bottom of container chamber (12)
With discharge valve (121).
3. a kind of preheating method catalytic combustion system of purifying volatile organic exhaust gas according to claim 2, feature
It is：Cooling tube (122) road of distribution for cooling down container chamber (12) internal waste gas on the peripheral surface of the container chamber (12).
4. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 1, feature exist
In：The quantity of the activated carbon adsorption device (22) is more than one, and is arranged in series.
5. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 4, feature exist
In：The heater (221) is the hot blast pipe (2211) being connected with chimney (4) and heater strip (2212), the hot blast pipe
(2211) toward the activated carbon of activated carbon adsorption device (22), and heater strip (2212) is located at hot blast pipe (2211) and activated carbon
Between.
6. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 1, feature exist
In：Catalyst (311) is carried on the catalytic bed (31), the catalyst (311) is at cellular, and the hole of catalyst (311)
Toward burner (32).
7. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 6, feature exist
In：The catalyst (311) is made of nichrome, clay and ceramic microsphere, and the mass ratio of three is 10：7：3.
8. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 6, feature exist
In：It is equipped with fire-retardant cover (34) before the catalytic bed (31) and burner (32), the cover mouth of the fire-retardant cover (34) is toward combustion
Burner (32) side.
9. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 1, feature exist
In：Spray column (5) is carried between the chimney (4) and catalytic bed (31), the spray liquid of the spray column (5) is hydrogen peroxide and satisfies
With the mixed liquor of calcium hydroxide.
10. a kind of pre-heated catalytic combustion system of purifying volatile organic exhaust gas according to claim 9, feature exist
In：Waterproof ultraviolet lamp (51) is carried inside the spray column (5).
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| CN109985476A (en) * | 2019-03-01 | 2019-07-09 | 赵德华 | VOCS device in a kind of efficient process toxic gas |
| CN110433873A (en) * | 2019-08-13 | 2019-11-12 | 浙江德创环保科技股份有限公司 | A kind of honeycomb type denitrification catalyst rapid draing and method for calcinating |
| CN111135658A (en) * | 2019-12-25 | 2020-05-12 | 宁波鸿朗环保科技有限公司 | Organic waste gas catalytic combustion comprehensive treatment system containing Cl-VOCs |
| CN111151126A (en) * | 2020-01-13 | 2020-05-15 | 吴培源 | Graphene adsorption-heat accumulation type catalytic combustion VOCs purification device and technology |
| CN112246100A (en) * | 2020-10-14 | 2021-01-22 | 晋中学院 | A gaseous purifier that is used for chemical laboratory outdoor row air pollution to administer |
| CN112957878A (en) * | 2021-02-02 | 2021-06-15 | 江阴联众环保工程有限公司 | Polyester waste gas treatment device |
| CN113432135A (en) * | 2020-03-23 | 2021-09-24 | 大连佳纯气体净化技术开发有限公司 | Removing CO from gasified and transported pulverized coal2Method and device for producing methanol in gas |
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| CN113432135A (en) * | 2020-03-23 | 2021-09-24 | 大连佳纯气体净化技术开发有限公司 | Removing CO from gasified and transported pulverized coal2Method and device for producing methanol in gas |
| CN112246100A (en) * | 2020-10-14 | 2021-01-22 | 晋中学院 | A gaseous purifier that is used for chemical laboratory outdoor row air pollution to administer |
| CN112957878A (en) * | 2021-02-02 | 2021-06-15 | 江阴联众环保工程有限公司 | Polyester waste gas treatment device |
| CN116603361A (en) * | 2023-07-21 | 2023-08-18 | 天津市英格环保科技有限公司 | Waste gas treatment device for traditional Chinese medicine processing |
| CN116603361B (en) * | 2023-07-21 | 2023-09-26 | 天津市英格环保科技有限公司 | Waste gas treatment device for traditional Chinese medicine processing |
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