CN107441906A - A kind of processing method for removing benzene homologues in petrochemical industry waste gas - Google Patents
A kind of processing method for removing benzene homologues in petrochemical industry waste gas Download PDFInfo
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- CN107441906A CN107441906A CN201710929654.6A CN201710929654A CN107441906A CN 107441906 A CN107441906 A CN 107441906A CN 201710929654 A CN201710929654 A CN 201710929654A CN 107441906 A CN107441906 A CN 107441906A
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- benzene homologues
- waste gas
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 179
- 239000002912 waste gas Substances 0.000 title claims abstract description 51
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 120
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 26
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003647 oxidation Effects 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 125000004430 oxygen atom Chemical group O* 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 10
- 230000021615 conjugation Effects 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000003517 fume Substances 0.000 claims abstract description 8
- 239000012716 precipitator Substances 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000004913 activation Effects 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 4
- 239000010937 tungsten Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 150000001555 benzenes Chemical class 0.000 claims description 2
- 238000011109 contamination Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002671 adjuvant Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- -1 Benzene ring compound Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- 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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- 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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- 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
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
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- B01D2258/0283—Flue gases
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- Oil, Petroleum & Natural Gas (AREA)
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- Dispersion Chemistry (AREA)
- Treating Waste Gases (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The invention discloses a kind of processing method for removing benzene homologues in petrochemical industry waste gas, waste gas passes sequentially through residual-heat exchanger, gas superheat protection device, thermal type gas quality flow meter, mixed gas flow regulating valve, fiber bag precipitator, tungsten wire circle surface active ozone Oxidation Treatment device, gas fume washing purifying column, air-introduced machine and handled.The invention make use of ozone in surface active characteristic specific to some metal simple-substance surfaces, when tungsten wire coil is in the state of energization is red-hot, ozone can discharge activation oxygen atom rapidly on its surface, a kind of Strong oxdiative environment can be produced in tungsten metal surface, when the molecule containing conjugation C C keys such as benzene homologues is under such a Strong oxdiative environment, its conjugation C C key can be activated oxygen atom and break, and benzene homologues molecule is finally oxidized and is decomposed into H2O and CO2Deng inorganic molecule, so as to reach the purpose of benzene homologues in removing exhaust gas.
Description
Technical field
The present invention relates to a kind of processing method for removing benzene homologues in petrochemical industry waste gas, the waste gas belonged in environmental protection
Process field.
Background technology
Benzene homologues are the general names of benzene and its derivative.Sensu lato benzene homologues include whole aromatic compounds, in the narrow sense
Benzene homologues refer in particular to having containing for certain distribution and do harm to huamn body in human being's production living environment including BTEX
Benzene ring compound.
Refinement of the mankind to benzene homologues obtains can trace back to for 19th century earliest.1825, British scientist faraday
（Faraday）With the benzene of method isolated higher degree from the thermal cracking product of the similar substances such as fish oil of distillation, claim it
For " the heavy carbon compound of hydrogen ", and determine its basic physical property and chemical composition.Hereafter toluene, diformazan and are found that in succession
The materials such as benzene, and Uniform Name is benzene homologues.The industrial production of benzene homologues starts from 1865, is reclaimed from coal tar.With
The expansion of its purposes, yield constantly rises, and has become one of large tonnage product of the world ten to nineteen thirty.With benzene homologues
Production and application, its polluting property and toxicologic study to air gradually attract attention extensively, 70 years last century
Before and after generation, the monitoring and research of the thing pollution of benzene in air system are increasingly becoming focus.
Benzene homologues have serious negative effect to region particularly city atmospheric environment.Due to most benzene homologues（As benzene,
Toluene etc.）With stronger volatility, it is easy to evaporate among gas under normal temperature condition and forms VOC
（VOCs）, VOCs gaseous contaminations can be caused.For example BTEX is widely used in oil as the organic solvent being industrially commonly used
The industries such as paint, degreasing, dry-cleaning, printing, weaving, synthetic rubber.Can be due to waving during BTEX production, accumulating and use
Send out and cause atmosphere pollution.Photochemical reaction activity is higher in an atmosphere by BTEX, to photooxidant in air（Such as ozone and peroxide
Acetyl group nitrate etc.）Formation with secondary organic aerosol has suitable effect.
Mainly there are two kinds of stationary source and moving source in the source of benzene homologues pollution.Moving source mainly has automobile, steamer and aircraft
Deng the discharge gas using oil product as the vehicles of fuel；The species of stationary source is extremely more, predominantly petrochemical process process
Effluent and the various occasions using organic solvent with storage facilities etc., such as spray painting, printing, metal degreasing and degreasing, bonding
Agent, pharmacy, plastics, coating and rubber processing etc..
According to the technological process of production and the difference of the discharging modes of waste gas, benzene homologues have different control technologies.At present
It is widely used and study and more have：Absorption method, heat damage method, condensation method, absorption process etc., the new control developed in recent years
Technology processed includes：Biomembrance process, light decomposition method, plasma decomposition, ozone decomposed method etc..
（1）Absorption method：
With porous solid treatment fluid mixture, one or more of components contained therein are made to be enriched in the surface of solids, and with
The process of other component separation is referred to as adsorbing.Absorption method is mainly used in the purification of low concentration high flux benzene homologues.
（2）Heat damage method：
Heat damage method is current applies than benzene homologues administering method wide, that research is more, especially suitable for containing low concentration
The waste gas of benzene homologues.This method can be divided into direct flame combustion and catalysis is burnt, and its process is complicated and may include a series of
Decomposition, polymerization and radical reaction.And most important benzene homologues heat damage method mechanism includes oxidation, thermal cracking and thermal decomposition, heat
Destruction method is based on the progress of this mechanism.
（3）Condensation method：
Condensation method is that have different saturated vapor pressures this property at different temperatures using material, using reduce system temperature or
System pressure is improved, the process for condensing the benzene homologues in steam condition and being separated from waste gas.
（4）Absorption process：
The characteristics of absorption process can mainly be dissolved each other using benzene homologues with most of oily substance, with the oils of higher boiling, low-steam pressure
The benzene homologues in waste gas are absorbed as absorbent, common absorber is padding washing absorption tower.
（5）Biomembrance process：
Microorganism is exactly fixedly attached to porous medium filler surface by so-called biomembrance process, and makes dusty gas in packed bed
Biological treatment is carried out in layer, can be by contaminant removal therein, and be allowed to degrade in space.Volatile organic contaminant is inhaled
Apparent gap is attached to, is consumed by the Institute of Micro-biology in space, and be degraded into CO2、H2O and neutral salt.
At present, the waste gas benzene series substance treating method that China generally uses, generally existing initial investment is big, operation and maintenance cost
The shortcomings of height, technical sophistication, and its treatment effect is also difficult to meet increasingly strict emission request.For this reason, it may be necessary to find new
Method and approach solve this problem.
The content of the invention
In order to solve many deficiencies of the prior art, the invention provides one kind to remove benzene homologues in petrochemical industry waste gas
Processing method, the petrochemical industry waste gas containing benzene homologues enters residual-heat exchanger by gas piping, herein by heat exchange
Effect makes the waste gas of overheat be cooled and stably, and obtained after-heat is available for utilizing, and the outlet of residual-heat exchanger leads to
Gas piping connection gas superheat protection device is crossed, its effect is when residual-heat exchanger failure or the EGT after heat exchange
When still too high, can temporarily disconnected gas circuit, play a part of protect back-end processing device, the outlet of gas superheat protection device leads to
Gas piping connection thermal type gas quality flow meter is crossed, real-time monitoring record, hot type can be carried out to information such as exhaust gas flow, flow velocitys
The outlet of gas mass flow gauge connects mixed gas flow regulating valve by gas piping, is adjusted by the method for importing air
The actual concentrations of benzene homologues in waste gas, and accurate dilution cooling is carried out to waste gas, the outlet of mixed gas flow regulating valve leads to
Gas piping connection fiber bag precipitator is crossed, the particulate pollutant in waste gas is removed at this, prevents from wearing or blocking back-end processing
Device, the outlet of fiber bag precipitator connect tungsten wire circle surface active-ozone Oxidation Treatment device, tungsten wire circle by gas piping
The outlet of surface active-ozone Oxidation Treatment device by gas piping connect gas fume washing purifying column, at this to processing after
Waste gas carries out further water washing cleaning and cooling, and the outlet of gas fume washing purifying column connects air-introduced machine by gas piping, drawn
The outlet of blower fan connects atmospheric environment by gas piping.
Wherein, tungsten wire circle surface active-ozone Oxidation Treatment device is by gas pre-mixed area and oxidation reaction zone two parts group
Into bottom of device is provided with air intake valve, and air intake valve rear end is connected to ultra-fine filter screen by gas piping, and ultra-fine filter screen rear end is by gas
Body pipeline is connected to gas pre-mixed four-way valve, meanwhile, ozone generator and nitrogen storage tank are also connected to gas by gas piping respectively
Body premixes four-way valve, and the gas pre-mixed four-way valve port of export is connected to mixed gas shower nozzle by gas piping, on mixed gas shower nozzle
Side is provided with 1 set of metal tungsten wire circle, and metal tungsten wire circle is powered by 1 voltage-stabilized power supply outside device, at the top of device
Provided with drain tap；Petrochemical industry waste gas containing benzene homologues passes through tungsten wire circle surface active-ozone Oxidation Treatment bottom of device
Air intake valve enter processing unit inside, after the fine filtering of ultra-fine filter screen thoroughly removes granule foreign, into gas
Four-way valve is premixed, meanwhile, also enter gas by the ozone gas of ozone generator generation and by the nitrogen of nitrogen storage tank supply
Four-way valve is premixed, pending waste gas, ozone and nitrogen are in gas pre-mixed four-way valve according to the volume ratio being previously set（It is useless
Gas, O3、N2Ratio be respectively 28.7%, 31.1% and 40.2%）It is sufficiently mixed, the gas after being well mixed is sprayed by mixed gas
For head uniformly at injection to metal tungsten wire circle, metal tungsten wire circle enters the red-hot state that is powered under the power supply of voltage-stabilized power supply, now, mixes
The ozone closed in gas discharges rapidly activation oxygen atom in tungsten coil surface, and is locally producing a kind of Strong oxdiative ring
Border, when the benzene homologues molecule containing conjugation C-C keys in waste gas is under such a Strong oxdiative environment, it is conjugated C-C key meetings
It is activated oxygen atom to break, benzene homologues molecule is finally oxidized and is decomposed into H2O and CO2Deng inorganic molecule, so as to reach removing exhaust gas
The purpose of middle benzene homologues, the waste gas after purified treatment is discharged by the drain tap at the top of device, and enters next processing work
Sequence.Wherein, because benzene homologues are combustible, and ozone can form combustion adjuvant after oxygen atom is discharged --- and oxygen, the two is mixed
There is the danger exploded after conjunction, therefore be mixed into nitrogen as shielding gas into waste gas in advance, explosion-proof can be played.
Wherein, the working pressure range of tungsten wire circle surface active-ozone Oxidation Treatment device is 0.055 ~ 0.75MPa, work
It is 250 ~ 700 DEG C to make temperature range, dischargeable capacity 230m3。
Wherein, tungsten wire circle surface active-ozone Oxidation Treatment device, the surface temperature of metal tungsten wire circle at work are about
2600 DEG C, operating voltage 380V, its W content is more than 99.95%.
Wherein, tungsten wire circle surface active-ozone Oxidation Treatment device, its gas pre-mixed four-way valve enter one using three and go out knot
Structure, maximum pressure-bearing are 1.05MPa, and operating temperature range is 105 ~ 850 DEG C.
Waste gas after being handled by this method, the removal efficiency of its benzene homologues is up to 99.6%.
The advantage of the invention is that：
（1）The present invention has broken away from the governance model of benzene homologues in existing petrochemical industry waste gas, and creative make use of ozone to exist
Surface active characteristic specific to some metal simple-substance surfaces, when tungsten wire coil is in the state of energization is red-hot, ozone exists
Its surface can discharge activation oxygen atom rapidly, a kind of Strong oxdiative environment can be produced in tungsten metal surface, when benzene homologues etc.
When molecule containing conjugation C-C keys is under such a Strong oxdiative environment, its conjugation C-C key can be activated oxygen atom and break,
And finally it is oxidized and is decomposed into H2O and CO2Deng inorganic molecule.This method has preferable oxidation Decomposition effect to benzene homologues, is a kind of
Very targetedly processing method, its treatment effeciency can reach 98.9%.
（2）On the one hand the present invention greatly reduces in the process of running without using any chemical agent and purchases processing material
Caused cost, on the other hand also prevent to introduce the risk for endangering bigger pollutant.
（3）Invention applies multiple gases pre-mixed technology, can realize the advance uniformly mixing of reaction mass, significantly
The reaction efficiency of raising.
（4）Because benzene homologues are combustible, and ozone can form combustion adjuvant after oxygen atom is discharged --- oxygen, the two
There is the danger exploded after mixing.Therefore, the system has especially used nitrogen effectively to exclude the wind that explodes as shroud gas
Danger.
（5）The technology of the present invention route is advanced, and occupation area of equipment is smaller, and treatment effect is good, operation expense
It is very low, be advantageous to a wide range of popularization and application.
Brief description of the drawings
Fig. 1 is the equipment schematic diagram of the present invention.
In figure：1- residual-heat exchangers, 2- gas superheats protection device, 3- thermal type gas quality flow meters, 4- mixed gas
Flow control valve, 5- fiber bag precipitators, 6- tungsten wire circles surface active-ozone Oxidation Treatment device, 7- gas fume washings purifying column,
8- air-introduced machines
Fig. 2 is the schematic diagram of tungsten wire circle surface active-ozone Oxidation Treatment device.
The ultra-fine filter screen of 61- air intake valves, 62-, the gas pre-mixed four-way valves of 63-, 64- ozone generators, 65- nitrogen storage tanks,
66- mixed gas shower nozzle, 67- metals tungsten wire circle, 68- voltage-stabilized power supplies, 69- drain taps.
Embodiment
As shown in figure 1, remove the processing method of benzene homologues in petrochemical industry waste gas, the petrochemical industry waste gas containing benzene homologues
Residual-heat exchanger 1 is entered by gas piping, the waste gas of overheat is cooled and stably by heat exchange action herein, and
Obtained after-heat is available for utilizing, and the outlet of residual-heat exchanger 1 connects gas superheat protection device 2 by gas piping, its
Effect be when the failure of residual-heat exchanger 1 or the EGT after heat exchange remain unchanged too high, can temporarily disconnected gas circuit, play guarantor
The effect of back-end processing device is protected, the outlet of gas superheat protection device 2 connects thermal type gas quality flow by gas piping
Meter 3, real-time monitoring record can be carried out to information such as exhaust gas flow, flow velocitys, the outlet of thermal type gas quality flow meter 3 passes through gas
Pipeline connection mixed gas flow regulating valve 4, the method by importing air adjust the actual concentrations of benzene homologues in waste gas, and right
Waste gas carries out accurate dilution cooling, and the outlet of mixed gas flow regulating valve 4 connects fiber bag precipitator by gas piping
5, the particulate pollutant in waste gas is removed at this, prevents from wearing or blocks back-end processing device, the outlet of fiber bag precipitator 5 leads to
Cross gas piping connection tungsten wire circle surface active-ozone Oxidation Treatment device 6, tungsten wire circle surface active-ozone Oxidation Treatment dress
The outlet for putting 6 connects gas fume washing purifying column 7 by gas piping, and carrying out further water to the waste gas after processing at this cleans
Change and cooling, the outlet of gas fume washing purifying column 7 connect air-introduced machine 8 by gas piping, the outlet of air-introduced machine 8 passes through flue
Road connects atmospheric environment；Wherein, tungsten wire circle surface active-ozone Oxidation Treatment device 6 is by gas pre-mixed area and oxidation reaction zone
Two parts form, and bottom of device is provided with air intake valve 61, and the rear end of air intake valve 61 is connected to ultra-fine filter screen 62 by gas piping, surpass
The rear end of fie screen 62 is connected to gas pre-mixed four-way valve 63 by gas piping, meanwhile, ozone generator 64 and nitrogen storage tank 65
Gas pre-mixed four-way valve 63 is connected to by gas piping respectively, the gas pre-mixed port of export of four-way valve 63 is connected to mixed by gas piping
Gas tip 66 is closed, the top of mixed gas shower nozzle 66 is provided with 1 set of metal tungsten wire circle 67, and metal tungsten wire circle 67 is by outside device
1 voltage-stabilized power supply 68 in portion is powered, and drain tap 69 is provided with the top of device；Petrochemical industry waste gas containing benzene homologues passes through
The air intake valve 61 of tungsten wire circle surface active-bottom of ozone Oxidation Treatment device 6 enters inside processing unit, by ultra-fine filter screen
After 62 fine filtering thoroughly removes granule foreign, into gas pre-mixed four-way valve 63, meanwhile, generated by ozone generator 64
Ozone gas and the nitrogen supplied by nitrogen storage tank 65 also enter gas pre-mixed four-way valve 63, pending waste gas, ozone and nitrogen
Gas is in gas pre-mixed four-way valve 63 according to the volume ratio being previously set（Waste gas, O3、N2Ratio be respectively 28.7%,
31.1% and 40.2%）It is sufficiently mixed, the gas after being well mixed uniformly is sprayed to metal tungsten wire circle by mixed gas shower nozzle 66
At 67, metal tungsten wire circle 67 enters the red-hot state that is powered under the power supply of voltage-stabilized power supply 68, and now, the ozone in mixed gas exists
The surface of metal tungsten wire circle 67 discharges rapidly activation oxygen atom, and is locally producing a kind of Strong oxdiative environment, when containing in waste gas
When the benzene homologues molecule of conjugation C-C keys is under such a Strong oxdiative environment, its conjugation C-C key can be activated oxygen atom and beat
Broken, benzene homologues molecule is finally oxidized and is decomposed into H2O and CO2Deng inorganic molecule, so as to reach the mesh of benzene homologues in removing exhaust gas
, the waste gas after purified treatment is discharged by the drain tap 69 at the top of device, and enters next treatment process.Wherein, by
It is combustible in benzene homologues, and ozone can form combustion adjuvant after oxygen atom is discharged --- oxygen, there is generation after the two mixing
The danger of blast, therefore nitrogen is mixed into as shielding gas into waste gas in advance, explosion-proof can be played；Wherein, tungsten wire circle table
The working pressure range of face activation-ozone Oxidation Treatment device 6 is 0.055 ~ 0.75MPa, and operating temperature range is 250 ~ 700
DEG C, dischargeable capacity 230m3；Wherein, tungsten wire circle surface active-ozone Oxidation Treatment device 6, its metal tungsten wire circle 67 are working
When surface temperature be about 2600 DEG C, operating voltage 380V, its W content be more than 99.95%；Wherein, tungsten wire circle surface active-
Ozone Oxidation Treatment device 6, its gas pre-mixed four-way valve 63 enter one using three and go out structure, and maximum pressure-bearing is 1.05MPa, work temperature
It is 105 ~ 850 DEG C to spend scope.
Waste gas after being handled by this method, the removal efficiency of its benzene homologues is up to 99.6%.
Claims (2)
- A kind of 1. processing method for removing benzene homologues in petrochemical industry waste gas, it is characterised in that the petrochemical industry containing benzene homologues Waste gas enters residual-heat exchanger by gas piping, the waste gas of overheat is cooled and stably by heat exchange action herein, And obtained after-heat is available for utilizing, the outlet of residual-heat exchanger connects gas superheat protection device by gas piping, The outlet of gas superheat protection device connects thermal type gas quality flow meter by gas piping, and exhaust gas flow, flow velocity etc. are believed Breath carries out real-time monitoring record, and the outlet of thermal type gas quality flow meter connects mixed gas flow by gas piping and adjusted Valve, the method by importing air adjust the actual concentrations of benzene homologues in waste gas, and accurate dilution cooling is carried out to waste gas, mix The outlet for closing gas flow regulating valve connects fiber bag precipitator by gas piping, and the particle contamination in waste gas is removed at this Thing, the outlet of fiber bag precipitator connect tungsten wire circle surface active-ozone Oxidation Treatment device by gas piping, contain benzene series The petrochemical industry waste gas of thing enters processing unit by the air intake valve of tungsten wire circle surface active-ozone Oxidation Treatment bottom of device Inside, after the fine filtering of ultra-fine filter screen thoroughly removes granule foreign, sent out into gas pre-mixed four-way valve, while by ozone The ozone gas of raw device generation and the nitrogen supplied by nitrogen storage tank also enter gas pre-mixed four-way valve, pending waste gas, smelly Oxygen and nitrogen are sufficiently mixed in gas pre-mixed four-way valve according to the volume ratio being previously set, and the gas after being well mixed leads to Mixing gas tip is crossed uniformly at injection to metal tungsten wire circle, it is red-hot that metal tungsten wire circle enters energization under the power supply of voltage-stabilized power supply State, now the ozone in mixed gas discharges rapidly activation oxygen atom in tungsten coil surface, and is locally producing one Kind Strong oxdiative environment, when the benzene homologues molecule containing conjugation C-C keys in waste gas is under such a Strong oxdiative environment, it is common Yoke C-C keys can be activated oxygen atom and break, and benzene homologues molecule is finally oxidized and is decomposed into H2O and CO2Deng inorganic molecule, so as to reach To the purpose for removing benzene homologues in removing exhaust gas, the waste gas of the benzene homologues gone after purified treatment in removing exhaust gas is by the row at the top of device Air valve is discharged, and connects gas fume washing purifying column by gas piping, waste gas after processing is further washed at this Purification and cooling, the outlet of gas fume washing purifying column connect air-introduced machine by gas piping, and the outlet of air-introduced machine passes through flue Road connects atmospheric environment；The surface temperature of the metal tungsten wire circle of tungsten wire circle surface active-ozone Oxidation Treatment device at work About 2600 DEG C, operating voltage 380V, its W content is more than 99.95%, tungsten wire circle surface active-ozone Oxidation Treatment device Gas pre-mixed four-way valve enter one using three and go out structure, maximum pressure-bearing is 1.05MPa, and operating temperature range is about 105 ~ 850 DEG C.
- 2. the processing method according to claim 1 for removing benzene homologues in petrochemical industry waste gas, it is characterised in that tungsten wire circle The working pressure range of surface active-ozone Oxidation Treatment device is about 0.055 ~ 0.75MPa, and operating temperature range is about 250 ~ 700 DEG C, dischargeable capacity 230m3。
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| CN201710929654.6A CN107441906B (en) | 2016-07-15 | 2016-07-15 | Treatment method for removing benzene series in petrochemical industrial waste gas |
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| CN201610555323.6A CN105944494B (en) | 2016-07-15 | 2016-07-15 | A kind of processing method for removing benzene homologues in petrochemical industry waste gas |
| CN201710929654.6A CN107441906B (en) | 2016-07-15 | 2016-07-15 | Treatment method for removing benzene series in petrochemical industrial waste gas |
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| CN201710929654.6A Active CN107441906B (en) | 2016-07-15 | 2016-07-15 | Treatment method for removing benzene series in petrochemical industrial waste gas |
| CN201610555323.6A Active CN105944494B (en) | 2016-07-15 | 2016-07-15 | A kind of processing method for removing benzene homologues in petrochemical industry waste gas |
| CN201710929272.3A Active CN107486003B (en) | 2016-07-15 | 2016-07-15 | A kind of processing method removing benzene homologues in petrochemical industry exhaust gas |
| CN201710929271.9A Active CN107511042B (en) | 2016-07-15 | 2016-07-15 | Treatment method for removing benzene series in petrochemical industrial waste gas |
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| CN107486003A (en) * | 2016-07-15 | 2017-12-19 | 缪琼华 | A kind of processing method for removing benzene homologues in petrochemical industry waste gas |
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| CN106629068A (en) * | 2016-11-21 | 2017-05-10 | 中国核电工程有限公司 | Aerosol distribution device |
| CN108211739A (en) * | 2018-02-08 | 2018-06-29 | 杭州富阳锦丰纸业有限公司 | A kind of processing system for removing amino benzenes compounds in organic chemical industry's exhaust gas |
| CN110465156B (en) | 2018-05-09 | 2023-02-21 | 伊利诺斯工具制品有限公司 | Waste gas filtering device for reflow oven |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107511042B (en) | 2020-06-16 |
| CN105944494B (en) | 2017-12-05 |
| CN107441912A (en) | 2017-12-08 |
| CN107441906B (en) | 2020-06-12 |
| CN107486003A (en) | 2017-12-19 |
| CN107441912B (en) | 2018-05-22 |
| CN105944494A (en) | 2016-09-21 |
| CN107511042A (en) | 2017-12-26 |
| CN107486003B (en) | 2018-07-20 |
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