CN109708127A - The high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas - Google Patents
The high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas Download PDFInfo
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- CN109708127A CN109708127A CN201910153440.3A CN201910153440A CN109708127A CN 109708127 A CN109708127 A CN 109708127A CN 201910153440 A CN201910153440 A CN 201910153440A CN 109708127 A CN109708127 A CN 109708127A
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- 239000007789 gas Substances 0.000 title claims abstract description 105
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 89
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000001301 oxygen Substances 0.000 title claims abstract description 85
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 83
- 238000000746 purification Methods 0.000 title claims abstract description 29
- 239000002440 industrial waste Substances 0.000 title claims abstract description 15
- 125000001997 phenyl group Chemical class [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 title claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000005728 strengthening Methods 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims description 12
- 239000003818 cinder Substances 0.000 claims description 10
- 239000003610 charcoal Substances 0.000 claims description 9
- 235000004443 Ricinus communis Nutrition 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 4
- 239000002737 fuel gas Substances 0.000 abstract description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 57
- 150000001555 benzenes Chemical class 0.000 description 22
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- 238000000034 method Methods 0.000 description 15
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 239000002912 waste gas Substances 0.000 description 10
- 238000010304 firing Methods 0.000 description 9
- 238000010114 lost-foam casting Methods 0.000 description 8
- 229940058172 ethylbenzene Drugs 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 239000003500 flue dust Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000008246 gaseous mixture Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- -1 benzene hydrocarbon Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003183 carcinogenic agent Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Incineration Of Waste (AREA)
Abstract
The invention discloses a kind of high-temperature oxygen-enriched extraordinary pressure combustion purification devices of benzene class nuisance in industrial waste gas, including exhaust gas centralized to receive suction and conveying system comprising exhaust gas suction and conveying device and vacuum pump discharges tank；Store up even system comprising store up even tank, the even tank of storage, which is equipped with, stores up even tank gas outlet, stores up even tank gas outlet and is connected to the one end for storing up even air shooter；The exhaust gas suction and conveying device is connected to by first pipe with even tank is stored up, and the vacuum pump discharges tank is connected to by second pipe with even tank is stored up；The oxygen-enriched mixing and conveying system of exhaust gas comprising oxygen tank and air blower；Oxygen-enriched strengthening combustion system comprising oxygen-enriched intensified burner, the oxygen-enriched intensified burner includes combustion chamber.The present apparatus is easy to operate, securely and reliably, is easy to promote, with low investment, purifying rate is high；It can not only high-efficient purification containing benezene gas, moreover it is possible to which various nocuousness fuel gas and combustible dust in high-efficient purification exhaust gas can also dissolve the harm of metallic dust of the fusing point lower than 1380 DEG C.
Description
Technical field
The present invention relates to environmental protection technical fields, are related to the purification dress of the pollutants such as containing benezene harmful exhaust and flue dust
It sets, the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in specifically a kind of industrial waste gas.
Background technique
At home and abroad in industrial production, all uses aromatic hydrocarbons material (i.e. containing the hydrocarbon of benzene ring structure in molecule)
A variety of chemical industries such as industry, such as plastic industry, rubber industry, paint, petrochemical industry, pharmaceuticals industry, waste incineration and evaporative pattern
With V method casting industry etc., the material of benzene ring structure is in heating, burning, gasification or cracking process, inevitable real estate
The release of raw (benzene, toluene, ethylbenzene, styrene etc.) exhaust gas containing benzene, one to cut with the industry of combustion process also inevitable because cannot
The discharge of completely burned and the flammable nuisance such as generate CO and C flue dust, pollutes atmosphere, endangers the mankind.State, the World Health Organization
Border Agency for Research on Cancer was included in these benezene materials in carcinogenic substance inventory on October 27th, 2017, and wherein benzene is one kind
Carcinogenic substance, toluene are that 3 classes, ethylbenzene and styrene are 2B class.However, for many years, controlling both at home and abroad the purification of the carcinogenic exhaust gas of benzene class
Reason not yet obtains the effective ways for being suitable for industrializing popularization and application, and the purified treatment of benzene class exhaust gas is at international environmental protection ten
The problem of parted hair pain.
For lost foam casting, world's lost foam casting is started from 1958, and China introduces research lost foam casting and starts from
Simultaneously industrialized production and application have been done step-by-step in nineteen sixty-five.So far, both at home and abroad to the EPS(expanded polystyrene (EPS) of lost foam casting) it pours
The pollutions such as the benzene class exhaust gas and CO and C flue dust that generate when note are still helpless, this problem is protected at lost foam casting environment
The biggest obstacle of shield and sustainable development.Before more than ten years, once there were so-called " noble metal in foreign countries to technical benzene class exhaust-gas treatment
The report of the research such as Adsorption Concentration Production by Catalytic Combustion Process ", but do not have advanced practicability, equipment is huge, structure is complicated, equipment is thrown
Provide it is surprising, millions of members of saving your breath even up to ten million members, operating cost is very high, and operational process security risk is a lot of, collection
The danger that the gases such as benzene class object easily leak, runs trivial operations, and suction-operated has limitation.For example diesel oil absorption benzene has one
Fixed effect, but the adsorption cleaning of toluene, ethylbenzene, styrene is acted on less, it is even more impossible to absorb the CO gas in exhaust gas, and
The effect of any adsorbent is the value for weakening therewith hastening towards saturation to disappearance, therefore not having popularization and application.
In the exhaust gas that lost foam casting casting process is discharged, contain the hydrocarbons such as benzene, toluene, ethylbenzene, styrene
And CO and C flue dust etc., belong to flammable combustibles, but because the concentration of its discharge is very low, institute's containing benezene object in every cubic metre of discharge gas
Highest gross mass only about 10g or so, it is generally the case that at i.e. 20 DEG C, the density of air is about 1.205kg/ in atmospheric pressure
m3If 0.8% concentration is also only equivalent to, in atmospheric pressure even if institute's containing benezene object gross mass reaches 10g in 1 cubic metre of exhaust gas
It is middle be with open fire impossible directly light.The slave lost foam casting workshop vacuum pump row that comprehensive domestic and international associated mechanisms are issued
The benzene hydrocarbon gase concentration for putting sample detection in pipe is shown in Table 1:
Table 1: comprehensive to report both at home and abroad, the exhaust gas constituents range passed through in Foundry Works's vacuum pump discharges pipe
Generally detection proves both at home and abroad, and for domestic and international existing lost foam casting factory, 4 kinds of benzene class objects pass through vacuum in table 1
The minimum content in the exhaust gas of discharge is pumped also considerably beyond National Environmental sanitary standard, is intuitively said, from discharge outlet more than 20
Rice is outer also to smell strong benzene hydrocarbon gase penetrating odor, discharge outlet over-emitting black exhaust, it is necessary to which purification could protect environment.
Summary of the invention
It the purpose of the present invention is to overcome the shortcomings of above-mentioned technology, and provides a kind of easy to operate, securely and reliably, is easy to push away
Extensively, with low investment, the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in the high industrial waste gas of purifying rate.
Realizing the technical solution of the object of the invention is:
The high-temperature oxygen-enriched extraordinary pressure overheavy firing purification method of benzene class nuisance in a kind of industrial waste gas, includes the following steps:
1) collection receives waste gas containing benzene；
2) by exhaust gas and oxygen mix, oxygen-rich mixture is formed；
3) gaseous mixture is imported in 1300 DEG C or more of combustion chamber, make exhaust gas high temperature, oxygen enriched atmosphere combustion chamber in turbulent flow
It seethes state and sufficiently reacts generation CO with oxygen2And H2O is purified.
Further include step 1-1 after step 1)): exhaust gas is imported in an even device of storage, the dense of benzene class object in exhaust gas is made
Degree is more relatively uniform than being able in storing up even device in the concentration of each different moments discharges, keeps exhaust gas concentration uniform, is conducive to entrance
Combustion state behind combustion chamber is able to opposite stabilization.
In step 3), gaseous mixture reacts in the combustion chamber of extraordinary pressure atmosphere with oxygen.
Implement the above method, a high-temperature oxygen-enriched extraordinary pressure combustion purification device is set, it is described high-temperature oxygen-enriched extraordinary
Pressure combustion purification device includes:
Exhaust gas centralized receives suction and conveying system comprising exhaust gas suction and conveying device and vacuum pump discharges tank；
Store up even system comprising store up even tank, the even tank of storage, which is equipped with, stores up even tank gas outlet, stores up even tank gas outlet and the even gas of storage is defeated
One end of pipe is sent to be connected to；The exhaust gas suction and conveying device is connected to by first pipe with even tank is stored up, and the vacuum pump discharges tank passes through the
Two pipelines are connected to even tank is stored up；
The oxygen-enriched mixing and conveying system of exhaust gas comprising oxygen tank and air blower, the gas outlet of the oxygen tank and the even gas of storage are defeated
Pipe is sent to be connected to, the other end for storing up even air shooter is connected to the air inlet of air blower；
Oxygen-enriched strengthening combustion system comprising oxygen-enriched intensified burner, the oxygen-enriched intensified burner includes combustion chamber, the combustion
It burns room lower part and is equipped with the air intake passage being interlinked to the outside with combustion chamber at fuel, the top of combustion chamber is equipped with boost port, the increasing
Pressure mouth upwardly extends to form burner bright eruption mouth and communicate with the outside world；
The air outlet of the air blower is connected to the air inlet of air intake passage；The sectional area of the burner bright eruption mouth is less than pressurization
The sectional area of mouth, the air inlet sectional area of the air intake passage are greater than the sectional area of boost port；
Described method includes following steps:
(1) fuel in oxygen-enriched intensified burner combustion chamber is lighted, combustion chamber is made to be warming up to 1300 DEG C or more；
(2) waste gas containing benzene is taken in the exhaust gas centralized receipts suction and conveying system into described device by exhaust gas suction and conveying device collection；
(3) suction and conveying system is received by exhaust gas centralized to import waste gas containing benzene in the even tank of storage, benzene class object concentration in exhaust gas is made to become
In relatively uniform；
(4) oxygen is input to store up in even air shooter and mix with by storing up even waste gas containing benzene by opening oxygen tank 7, forms richness
Oxygen gas mixture；
(5) oxygen-rich mixture is imported in combustion chamber by air blower and air intake passage, forms extraordinary pressure and rises turbulent flow reinforcing combustion
Burning state reacts waste gas containing benzene sufficiently with oxygen in the combustion chamber and generates CO2And H2O is purified.
The top for storing up even tank is arranged in the even tank gas outlet of storage；It is even that first pipe and the pipeline opening of second pipe are located at storage
The lower part of tank.
The oxygen-enriched intensified burner includes being formed by shell and the fire brick layer amplexiformed with outer casing inner wall, in burner
The lower part of chamber is equipped with steelframe castor item, is combustion chamber above steelframe castor item, and lower section is cinder chamber, and combustion chamber lower part is equipped with combustion chamber
Door, cinder chamber lower part are equipped with cinder chamber's door.
The combustion chamber, height are 1.4~1.5 times of its diameter, are turned over conducive to air-flow or more is formed under the conditions of air blast
The space risen.
The air intake passage is the air intake passage being connected with air blower and combustion chamber.
The air inlet sectional area of the air intake passage is 1.2~1.4 times of boost port sectional area, the burner bright eruption mouth
Sectional area be 0.9 times of boost port sectional area.
The fuel is charcoal, and calorific value is 3.0~3.2 × 107Burnt/kilogram.
Purification method of the present invention has following features:
1. benzene class combustible (has and seethes scrolling state like " strong stirring ") overheavy firing atmosphere in high-temperature oxygen-enriched extraordinary pressure turbulent
It is able to full combustion in enclosing, generates H2O and CO2, be purified discharge；
2. the fuel that the method for the present invention uses is charcoal, oxygen-rich mixture conductance is entered fierce burning, combustion chamber in combustion chamber
The interior high-temp combustion space for forming 1300 DEG C or more, according to principle of hydrodynamics, designed combustion room lower part air inlet sectional area
It is 1.2~1.4 times of boost port sectional area, bright eruption mouth sectional area is 0.9 times of boost port sectional area, in addition air-flow is in combustion chamber
Interior generation high-temperature expansion, boost port opposite formed of indoor air pressure that make to burn are greater than 1 atmospheric pressure atmosphere, indoor benzene class of burning
Fuel gas, which is just formed, seethes the extraordinary pressure turbulent combustion state of scrolling up and down, to be able to full combustion purification；
It is firm and heat insulation effect is good 3. the Inner Wall of Combustion Chamber for the device that the present invention uses is refractory brick insulating layer, in air blower richness
Oxygen blows and using under the conditions of charcoal overheavy firing, the condition of reinforcing and forced burning is created to benzene class fuel gas.
It is detected through test of many times thermocouple temperature measurement instrument:
Charcoal fuel combustion central temperature range --- 1380 DEG C or more；
Bags flame temperature range --- 1300-1380 DEG C (the general difficulty of normal pressure state burning surpasses 1000 DEG C of high temperature)；
Burner bright eruption mouth flame temperature range --- 1280-1360 DEG C.
The principle that benzene class combustible purifies in industrial waste gas of the present invention is:
The benzene class object such as benzene, toluene, ethylbenzene, styrene in technical benzene class exhaust gas is hydrocarbon, is combustible, CO and C
Flue dust etc. is also combustible, but since concentration is low, content is usually in 10g/m3Hereinafter, in normal atmosphere (An) and conventional open fire temperature
It can not be lighted under degree, be difficult to be converted to H under 1000 DEG C of condition of normal pressure of <2O and CO2。
The method of the present invention energy:
1. providing excess oxygen, there are oxygen tank and air blower air-supply oxygen supply, oxygen is sufficient, overheavy firing；
2. provide 1300 DEG C or more of hot conditions, indoor combustible substance of burning be charcoal and benzene hydrocarbon gase in exhaust gas,
Combustibles, the calorific values such as CO, free C are high；
3. providing " forced burning condition ", it is boost port sectional area that air inlet sectional area is pressed in the combustion chamber of strengthening combustion system
1.2~1.4 times, and 0.9 times of principle of bright eruption mouth sectional area=boost port sectional area is arranged, and can make opposite formation in combustion chamber
Greater than " extraordinary pressure " atmosphere of 1 atmospheric pressure, make combustible gas stream formed it is powerful seethe turbulent combustion state, be on this boost port
Burner unique bright eruption mouth gas outlet forces benzene class exhaust gas in the oxygen-enriched turbulent overheavy firing of the extraordinary pressure of 1300 DEG C or more high temperature
Full combustion is able in atmosphere；
4. benzene class combustible hazardous object is easily sufficiently tied with oxygen under conditions of oxygen-enriched, extraordinary super pressure-high temperature, seething scrolling overheavy firing
Symphysis is at CO2And H2O is able to high-efficient purification.
The invention has the advantages that
1. total weight < 4000kg, compact structure is with low investment, and operating cost is low；
2. it is easy to operate, securely and reliably, can continuously or discontinuously it run；
3. the combustion heat can be comprehensively utilized sufficiently, such as baking ladle, importing steam boiler combustion chamber, importing drying or heating dress
In setting；
4. can not only high-efficient purification containing benezene gas, moreover it is possible to various nocuousness fuel gas and combustible dust in high-efficient purification exhaust gas,
Also it can dissolve the harm of metallic dust of the fusing point lower than 1380 DEG C.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of device in embodiment；
In figure: 1. exhaust gas source of release, 2. exhaust gas suction and conveying device 2-1. first pipe, 3. vacuum pump discharges tank is (for the molding that disappears
Make) 3-1. second pipe 3-2. vacuum pump 4. stores up even tank 5. and stores up even tank gas outlet 6. and store up even 7. oxygen tank of air shooter
8. 9. oxygen-enriched intensified burner 9-1. air intake passage 9-2. shell 9-3. combustion chamber 9-4. boost port 9-5. of air blower is resistance to
The combustion chamber firebrick layer 9-6. charcoal fuel 9-7. door 9-8. cinder chamber door 9-9. cinder chamber 9-10. burner bright eruption mouth
9-11. castor item；A is that exhaust gas centralized receives suction and conveying system, and B is to store up even system, and C is the oxygen-enriched mixing and conveying system of exhaust gas, and D is oxygen-enriched reinforcing
Combustion system.
Arrow indicates airflow direction in figure.
Specific embodiment
The content of present invention is further elaborated below with reference to embodiment and attached drawing, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment:
The high-temperature oxygen-enriched extraordinary pressure overheavy firing purification method of benzene class nuisance in a kind of industrial waste gas, includes the following steps:
1) collection receives containing benezene exhaust gas；
2) by exhaust gas and oxygen mix, the O of 80g-200g is inputted in every cubic metre of exhaust gas2Mixing forms oxygen-rich mixture (O2
Content is higher than O in normal atmospheric in gas2Content be " oxygen-enriched ")；
3) gaseous mixture is imported in 1300 DEG C or more of combustion chamber, make exhaust gas high temperature, oxygen enriched atmosphere combustion chamber in turbulent flow
It seethes state and sufficiently reacts generation CO with oxygen2And H2O is purified.
Further include step 1-1 after step 1)): exhaust gas is imported and is stored up in even device, tends to exhaust gas concentration relatively
It is even, opposite stabilization is able to conducive to the combustion state entered behind combustion chamber.
In step 3), gaseous mixture reacts in the combustion chamber of extraordinary pressure atmosphere with oxygen.
Refering to fig. 1, implement the above method, a high-temperature oxygen-enriched extraordinary pressure combustion purification device, the high temperature are set
Oxygen-enriched extraordinary pressure combustion purification device includes
Exhaust gas centralized receives suction and conveying system A comprising exhaust gas suction and conveying device 2 and vacuum pump discharges tank 3；The vacuum pump discharges tank 3 with it is true
Sky pump 3-2 connection；
Store up even system B comprising store up even tank 4, the even tank 4 of storage, which is equipped with, stores up even tank gas outlet 5, stores up even tank gas outlet 5 and storage is even
One end of air shooter 6 is connected to；The exhaust gas suction and conveying device 2 is connected to by first pipe 2-1 with even tank 4 is stored up, the vacuum pump
Exhaust canister 3 is connected to by second pipe 3-1 with even tank 4 is stored up；
The oxygen-enriched mixing and conveying system C of exhaust gas comprising oxygen tank 7 and air blower 8, the gas outlet of the oxygen tank 7 and the even gas of storage
Body delivery pipe 6 is connected to, and the other end for storing up even air shooter 6 is connected to the air inlet of air blower 8；
Oxygen-enriched strengthening combustion system D comprising oxygen-enriched intensified burner 9, the oxygen-enriched intensified burner 9 include combustion chamber 9-3,
The lower part the combustion chamber 9-3 is equipped with the air intake passage 9-1 being interlinked to the outside with combustion chamber 9-3, the top of combustion chamber 9-3 at fuel
Equipped with boost port 9-4, the boost port 9-4, which is upwardly extended, to be formed burner bright eruption mouth 9-10 and communicates with the outside world；
The air outlet of the air blower 8 is connected to the air inlet of air intake passage 9-1；The sectional area of the burner bright eruption mouth 9-10
Less than the sectional area of boost port 9-4, the air inlet sectional area of the air intake passage 9-1 is greater than the sectional area of boost port 9-4；
Described method includes following steps:
(1) fuel in oxygen-enriched intensified burner combustion chamber 9-3 is lighted, combustion chamber 9-3 is made to be warming up to 1300 DEG C or more；
(2) waste gas containing benzene is collected to the exhaust gas centralized receipts suction and conveying system taken in into described device by exhaust gas suction and conveying device 2；
(3) suction and conveying system is received by exhaust gas centralized to import waste gas containing benzene in the even tank 4 of storage, tend to exhaust gas concentration relatively
It is even；
(4) oxygen is input in the even air shooter 6 of storage and mixes with the relatively uniform waste gas containing benzene of concentration by opening oxygen tank 7,
Form oxygen-rich mixture；
(5) oxygen-rich mixture is imported in the 9-3 of combustion chamber by air blower 8 and air intake passage 9-1, forms extraordinary pressure and rises turbulent flow
Overheavy firing state reacts waste gas containing benzene sufficiently in the 9-3 of combustion chamber with oxygen and generates CO2And H2O is purified.
The top for storing up even tank 4 is arranged in the even tank gas outlet 5 of storage；The pipeline opening of first pipe 2-1 and second pipe 3-1
Positioned at the lower part for storing up even tank 4.The volume of the even tank of storage is 3m3.
The oxygen-enriched intensified burner 9 includes by shell 9-2 and the fire brick layer 9-5 shape amplexiformed with shell 9-2 inner wall
At it is combustion chamber 9-3 above castor 9-11 that the lower part of burner cavity, which is equipped with castor 9-11, and lower section is cinder chamber 9-9, burning
The room lower part 9-3 is equipped with combustion chamber door 9-7, and the lower part cinder chamber 9-9 is equipped with cinder chamber door 9-8.
The combustion chamber 9-3, height are 1.4~1.5 times of its diameter, are conducive to form air-flow or more under the conditions of air blast
The space seethed.
The air intake passage 9-1 is the air intake passage being connected with air blower 8 and combustion chamber 9-3.
The sectional area of the burner bright eruption mouth 9-10 is 0.9 times of boost port 9-4 sectional area, the air intake passage 9-1
Air inlet sectional area be 1.2~1.4 times of boost port 9-4 sectional area.
The fuel is charcoal, and calorific value is 3.0~3.2 × 107Burnt/kilogram.
2 flare of exhaust gas suction and conveying device, big opening end opening is towards exhaust gas source of release 1, osculum end and first
Pipeline 2-1 is connected to (similar common smoke extractor principle and structure).
All pipe fitting internal diameters of the present apparatus are Φ 160mm.
The method of the present invention extraordinary pressure overheavy firing purification process high-temperature oxygen-enriched to benzene class nuisance in industrial waste gas is:
Charcoal fuel 9-6 in oxygen-enriched 9 combustion chamber 9-3 of intensified burner is lighted, combustion chamber 9-3 temperature is made to rise to 1300
DEG C or more, it opens exhaust gas centralized and receives suction and conveying system, start vacuum pump 3-2, exhaust gas input is stored up in the even tank 4 of storage of even system, then
The oxygen-enriched mixing and conveying system of exhaust gas is imported, exhaust gas mixes in the even air shooter 6 of storage with oxygen, the waste gas stream after mixing is oxygen-enriched
It is imported in the 9-3 of combustion chamber by air blower 8 and air intake passage 9-1, benezene material (benzene, toluene, ethylbenzene, styrene in exhaust gas
Deng) and CO, C etc., it is forced sufficiently to fire in the case where 1300 DEG C or more high temperature are greater than the oxygen-enriched atmosphere for strengthening turbulent combustion of 1 atmospheric pressure
It burns, generates CO2And H2O is purified, and is discharged by boost port 9-4 from burner bright eruption mouth 9-10.
The present embodiment through on-site test, from 1 meter of 9-10 of burner bright eruption mouth in can't smell penetrating odor completely, without black
Color soot emissions.Had the professional testing agency's testing result such as table 2 of the environmental protection of national qualification, sampling time: December 05 in 2018
Day:
Table 2
| Detection project | Before exhaust-gas treatment is discharged in vacuum pump | After processing (sampling of burner bright eruption mouth) | Purifying rate |
| Benzene content | 161 mg/m3 | 0.195 mg/m3 | 99.88% |
| Toluene level | 90.5 mg/m3 | 0.0397 mg/m3 | 99.96% |
| Ethyl-benzene level | 27.7 mg/m3 | ND(note 1) | ≈100% |
| Styrene-content | 1.21×103 mg/m3 | 0.0395 mg/m3 | 99.97% |
Note 1:ND(Not Detected, undetected, abbreviation ND) it is meant that it attempts micro (to tend to can't detect
It 0), is the general code name of environmental monitoring.
2 detection datas of table are highest level of purification international up to now.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in a kind of industrial waste gas characterized by comprising
Exhaust gas centralized receives suction and conveying system comprising exhaust gas suction and conveying device and vacuum pump discharges tank；
Store up even system comprising store up even tank, the even tank of storage, which is equipped with, stores up even tank gas outlet, stores up even tank gas outlet and the even gas of storage is defeated
One end of pipe is sent to be connected to；The exhaust gas suction and conveying device is connected to by first pipe with even tank is stored up, and the vacuum pump discharges tank passes through the
Two pipelines are connected to even tank is stored up；
The oxygen-enriched mixing and conveying system of exhaust gas comprising oxygen tank and air blower, the gas outlet of the oxygen tank and the even gas of storage are defeated
Pipe is sent to be connected to, the other end for storing up even air shooter is connected to the air inlet of air blower；
Oxygen-enriched strengthening combustion system comprising oxygen-enriched intensified burner, the oxygen-enriched intensified burner includes combustion chamber, the combustion
It burns room lower part and is equipped with the air intake passage being interlinked to the outside with combustion chamber at fuel, the top of combustion chamber is equipped with boost port, the increasing
Pressure mouth upwardly extends to form burner bright eruption mouth and communicate with the outside world；
The air outlet of the air blower is connected to the air inlet of air intake passage；The sectional area of the burner bright eruption mouth is less than pressurization
The sectional area of mouth, the air inlet sectional area of the air intake passage are greater than the sectional area of boost port.
2. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas according to claim 1,
It is characterized in that, the top for storing up even tank is arranged in the even tank gas outlet of storage；First pipe and the pipeline opening of second pipe are located at
Store up the lower part of even tank.
3. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas according to claim 1,
It is characterized in that, the oxygen-enriched intensified burner includes being formed by shell and the fire brick layer amplexiformed with outer casing inner wall, burning
The lower part of device inner cavity is equipped with castor item, is combustion chamber above castor item, and lower section is cinder chamber, and combustion chamber lower part is equipped with combustion chamber door, ash
Grit chamber lower part is equipped with cinder chamber's door.
4. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas according to claim 1,
It is characterized in that, the combustion chamber, height is 1.4~1.5 times of its diameter.
5. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas according to claim 1,
It is characterized in that, the sectional area of the burner bright eruption mouth is 0.9 times of boost port sectional area, the air inlet of the air intake passage
Sectional area is 1.2~1.4 times of boost port sectional area.
6. the high-temperature oxygen-enriched extraordinary pressure combustion purification device of benzene class nuisance in industrial waste gas according to claim 1,
It is characterized in that, the fuel is charcoal, calorific value is 3.0~3.2 × 107Burnt/kilogram.
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