CN106237817A - A kind of foul gas processing method and system - Google Patents
A kind of foul gas processing method and system Download PDFInfo
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- CN106237817A CN106237817A CN201610804924.6A CN201610804924A CN106237817A CN 106237817 A CN106237817 A CN 106237817A CN 201610804924 A CN201610804924 A CN 201610804924A CN 106237817 A CN106237817 A CN 106237817A
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/02—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
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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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
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- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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Abstract
The present invention relates to environmental technology field, particularly relate to a kind of foul gas processing method and system.The present invention provides a kind of foul gas processing method, comprises the steps: 1) pending gas is carried out phase transfer process and oxidation processes；2) gas after standing phase transfer process and oxidation processes is carried out except liquid processes.Foul gas processing method provided by the present invention and system compared with prior art, its strong adaptability, anti impulsion load, be applicable not only to water solublity odorant it can also be used to the poor pollutant purification of water solublity.Absorb and porous absorption additionally, described method has merged hydrotropy, enhance the mass transport process that the pollutant in gas are transferred in liquid phase, enhance gas pollutant purification efficiency.
Description
Technical field
The present invention relates to environmental technology field, particularly relate to a kind of foul gas processing method and system.
Background technology
Instantly, along with the continuous acceleration of Urbanization in China, treatment of urban garbage had become as one the severeest
Problem.In three kinds of methods (sanitary landfills, burning and compost) of garbage disposal, burning disposal has obvious minimizing effect
Really, the rubbish loss of weight 80% after process and volume reduction more than 90% can be made, especially economically developed, MSW heating value is higher,
The city of shortage of land resource, incineration treatment method prospect is the most considerable.It addition, garbage incineration method can also be carried out by recovery waste heat
Generating, reaches the purpose of recycling.Thus, incineration treatment method is increasingly becoming the life that different scales city tendency selects
Refuse disposal approach.
At garbage burning factory, utilizing for the effect and efficiency ensureing waste incineration, the most just rubbish dumps to garbage storing
In hole, and typically to stack and fermentation dehydration through the standing of about 5～7 days in dump pit, calorific value enters back into burning after improving
Stove processes.Rubbish is in the parking period of garbage storing hole, and can produce hydrogen sulfide, mercaptan, ammonia etc. has fetor material.Burn at rubbish
Burning in stove normal operation, this foul gas is generally sent in incinerator after primary air fan aspirates and is carried out burning disposal.But
In incinerator maintenance or can not be in the case of running at full capacity, this foul gas can not be all by maybe not carrying out by incinerator
Process, if without effectively controlling, surrounding and nearby residents will be lived and cause the biggest impact, therefore need garbage storing
The foul gas supporting stench emergency processing facility produced in hole, prevents odor pollution, it is to avoid affect environment.
Existing emergent Deodor method mostly uses activated carbon adsorption method, but, activated carbon is for foul gas
Adsorption capacity is limited, if activated carbon loadings is many, then there is floor space big, the defects such as equipment investment expense is high.If loadings
Few, then adsorbent equipment is the most saturated, and uses replacing activated carbon, then exist and adsorbed the activated carbon abnormal flavour of foul gas seriously,
Renewal process, because activated carbon is unrestrained or the reason of abnormal smells from the patient dissipation, easily causes secondary pollution, and, the activated carbon changed needs
Disposing by the useless mode of danger, processing cost is higher.
Therefore, more aobvious necessity of garbage storing hole stench emergency processing method of a kind of practicality is developed.
Relative to active carbon method, the advantages such as chemical oxidization method has anti impulsion load, easy to operate, and investment cost is low,
It is suitable for alternative method of garbage storing hole stench emergency processing.But the method is insoluble in the malodorant of water processing
Matter, during such as mercaptan, macromole organic amine etc., because being controlled by the impact of gas-liquid mass transfer efficiency, to the clean-up effect of such material not
People's will to the greatest extent.It addition, the conventional chemical oxidizing agent of better economy is generally sodium hypochlorite, hydrogen peroxide etc., but it is limited to chemical oxygen
The oxidation-reduction potential of agent, some odorant is highly difficult with the reaction of chemical oxidizing agent.Therefore, chemical oxidization method is applied to
Garbage storing hole stench emergency processing it is crucial that solve gas-liquid mass transfer problem and strengthen the reaction of chemical oxidizing agent and odorant
Problem rate.
This patent is intended using the reagent strengthening stench composition phase transfer that a kind of chemical stability is high and hydrotropy is good, and assists
Hydrophobic adsorbent material, is effectively transferred to odorant pollutant in liquid phase environment, then by the method for chemical oxidation by pollutant
The method decomposed, thus a kind of practicality and cheap garbage storing hole stench emergency control method are provided.
The art of this patent can strengthen this mass-transfer progress, and uses the oxidants such as hydrogen peroxide, hypochlorous acid, potassium permanganate
It is carried out effective oxidative degradation, efficiently and rapidly foul gas is purified.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of foul gas processing method,
For solving the problems of the prior art.
For achieving the above object and other relevant purposes, first aspect present invention provides a kind of foul gas processing method,
Comprise the steps:
1) pending gas is carried out phase transfer process and oxidation processes；
2) gas after standing phase transfer process and oxidation processes is carried out except liquid processes.
In the present invention, described pending gas can be foul gas, can be more specifically foul waste gas, described effluvium
Body usually contains a certain amount of hydrogen sulfide, mercaptan, ammonia etc. the material of fetor, and its waste gas odor concentration is usually not less than
10000 (measurement standard is with reference to GB 14554-93).The most concrete, described foul gas can be that garbage storing hole stench gives up
Gas, described garbage storing hole foul waste gas is often referred to rubbish and stands in dehydration of stacking and ferment produced in garbage storing is cheated
Include the gas of the fetor materials such as hydrogen sulfide, mercaptan, ammonia.
In an embodiment of the present invention, described step 1) in, pending gas can be carried out phase transfer process, will be through
Gas after being processed by phase transfer carries out oxidation processes.
Described phase transfer process be often referred to by one or more materials from a phase transfer to another quite processing method,
Such as, in the present invention, phase transfer may refer to be transferred to liquid phase material from gas phase.
Preferably, described phase transfer processes to be specially and phase transfer reaction liquid and pending gas is carried out gas-to-liquid contact, from
And so that one or more materials in pending gas are by phase transfer to phase transfer reaction liquid.Described pending gas
Gas-to-liquid contact can be carried out with one or many and phase transfer reaction liquid.
In the present invention one preferred implementation, can be by pending gas carries out spraying the side of phase transfer reaction liquid
Formula carries out phase transfer process.
It is furthermore preferred that described phase transfer reaction liquid includes phase transfer accelerator.Described phase transfer accelerator is the most permissible
The material of the gas-liquid mass transfer efficiency of strengthening target substance (such as, hydrogen sulfide, mercaptan, ammonia etc. have the material of fetor), at this
Invent in a preferred implementation, described phase transfer accelerator one in polyethers (polyglycol ether), the quaternary salt etc. or
Multiple combination.Described pfpe molecule amount is not less than 400, and described quaternary salt is that four hydrogen atoms in phosphonium ion are all taken by alkyl
Generation and the compound that generates, general formula R4PX, such as, can be tetrabutyl phosphonium bromide, four (diethylin) bromination, three (piperidines
Base) one (diethylin) bromination, three (morpholinyl) (diethylin) bromination, three (dibutyl amino) (diethylin) bromine
The combination of one or more in change and two (piperidyl) or two (diethylin) bromination etc..
Those skilled in the art can adjust phase transfer according to the kind of the parameter of pending gas and phase transfer accelerator
The concentration of phase transfer accelerator, the usage amount etc. of phase transfer accelerator in the solvent of reactant liquor, phase transfer reaction liquid.Described phase turns
The solvent moving reactant liquor can be the various solvent being applicable to exhaust-gas treatment, in the present invention one preferred implementation, and described phase
Transfer reaction liquid is the aqueous solution of phase transfer accelerator；In another preferred implementation of the present invention, described phase transfer reaction liquid
The concentration of middle phase transfer accelerator is 0.1-5wt%；In another preferred implementation of the present invention, phase transfer reaction liquid with wait to locate
The liquid-gas ratio of process gases is 0.5-3L liquid/m3Gas.
Preferably, described phase transfer processes and carries out under conditions of adsorbing material exists.Described adsorbing material is usually many
Porous materials, the aperture of described adsorbing material can be 0.3nm-300nm.Those skilled in the art can select to close according to reaction condition
Suitable adsorbing material, can be generally the surface silica-based porous material through hydrophobic treatment, such as, can be hydrophobic zeolite (surface
Zeolite through hydrophobic treatment), in hydrophobic mesoporous material (surface is through the mesoporous material of hydrophobic treatment) one or more
Combination.In described silica-based porous material, the content of Si is usually not less than 70wt%, 75wt% or 80wt%.To silica-based porous material
The method carrying out hydrophobic treatment should be known to skilled person, for example, it may be silica-based porous material is carried out silica
Alkane processes modification, and the example of siloxanes includes but not limited to hydrogen polymethyl siloxane (PMHS) etc..
Described oxidation processes generally instigates the processing method that one or more materials are oxidized, such as, in the present invention, logical
Cross chemical oxidizing agent make can be oxidized in gas material generation oxidation reaction.
Preferably, described oxidation processes is specially and oxidation liquid and pending gas is carried out gas-to-liquid contact, so that
Obtain one or more materials in pending gas oxidized.Described pending gas can be with one or many and oxidation liquid
Carry out gas-to-liquid contact.
In the present invention one preferred implementation, can be by the way of carrying out pending gas spraying oxidation liquid
Carry out oxidation processes.
It is furthermore preferred that described oxidation liquid includes oxidant.Described oxidant usually has the material of oxidisability,
In the present invention one preferred implementation, one or more in sodium hypochlorite, hydrogen peroxide, permanganate etc. of described oxidant
Combination.
Those skilled in the art can adjust the molten of oxidation liquid according to the kind of the parameter of reacting gas and oxidant
The usage amount etc. of the concentration of oxidant, oxidant in agent, oxidation liquid.The solvent of described oxidation liquid can be various suitable
For the solvent of exhaust-gas treatment, in the present invention one preferred implementation, described oxidation liquid is the aqueous solution of oxidant；?
In another preferred implementation of the present invention, in described oxidation liquid, the concentration of oxidant is 1-10wt%；The present invention another
In preferred implementation, oxidation liquid is 0.5-3L liquid/m with the liquid-gas ratio of pending gas3Gas.
The described processing method processing the usual liquid removed included in gas except liquid, such as, in the present invention, passes through
Liquid removing device makes the liquid in gas be separated and/or remove.Described liquid removing device can be various to be applicable to exhaust-gas treatment
Liquid knockout, it is, for example possible to use baffling template liquid knockout, described baffling template liquid knockout generally flow to by changing fluid thus
Reach to separate gas phase and the purpose of liquid phase.
In the gas obtained after standing to process except liquid, waste gas odor concentration can be not more than 300 (measurement standard references
GB14554-93), far below the setting 2000 of " country's emission standard for odor pollutants " GB 14554-93, can be discharged
Such as air.
Second aspect present invention provides a kind of malodorous gas processing system, including: air processing unit with except liquid unit, institute
Stating air processing unit and except liquid unit is in fluid communication, described air processing unit includes phase transfer processing unit and oxidation processes
Unit, described phase transfer processing unit and oxidation processes unit fluid communication.
Preferably, described phase transfer processing unit, oxidation processes unit, can be in fluid communication successively except liquid unit.
Concrete, described phase transfer processing unit includes one or more layers phase transfer processing means, and described phase transfer processes
Device is often referred to carry out pending gas the device of phase transfer process.When described phase transfer processing unit includes that multi-layer phase shifts
During processing means, can be in fluid communication between each phase transfer processing means.
Preferably, described phase transfer processing means refers specifically to phase transfer reaction liquid and pending gas are carried out gas-to-liquid contact
Device so that one or more materials in pending gas are by phase transfer to phase transfer reaction liquid.
Preferably, described phase transfer processing means can include adsorbing material.Described adsorbing material is usually porous material,
The aperture of described adsorbing material can be 0.3nm-300nm.Those skilled in the art can select suitably to inhale according to reaction condition
Enclosure material, can be generally the surface silica-based porous material through hydrophobic treatment, such as, can be hydrophobic zeolite, hydrophobic mesoporous material
The combination of one or more in material.In described silica-based porous material the content of Si be usually not less than 70wt%, 75wt% or
80wt%.
In the present invention one preferred implementation, described phase transfer processing means includes spray equipment, described spray equipment
Can be to pending gas shower phase transfer reaction liquid.
Concrete, described oxidation processes unit includes one or more layers oxidation treatment device, and described oxidation treatment device leads to
Often refer to pending gas is carried out the device of oxidation processes.When described phase transfer processing unit includes multilamellar oxidation treatment device
Time, can be in fluid communication between each oxidation treatment device.
Preferably, described oxidation treatment device refers specifically to carry out oxidation liquid and pending gas the dress of gas-to-liquid contact
Put, so that one or more materials in pending gas are oxidized.
In the present invention one preferred implementation, described oxidation treatment device includes spray equipment, and described spray equipment can
With to pending gas shower oxidation liquid.
Concrete, described except liquid unit include liquid removing device, described liquid removing device be often referred to stand phase transfer process and
Gas after oxidation processes carries out the device processed except liquid.
Described liquid removing device can be the various liquid knockouts being applicable to exhaust-gas treatment, for example, it may be baffling template is except liquid
Device.
In an embodiment of the present invention, described malodorous gas processing system can also include that the storage of phase transfer reaction liquid is single
Unit, phase transfer reaction liquid memory element includes phase transfer reaction liquid storage tank, described phase transfer reaction liquid storage tank and gas treatment list
Unit's fluid communication, more specifically, described phase transfer reaction liquid storage tank is in fluid communication with phase transfer processing unit.
In an embodiment of the present invention, described malodorous gas processing system can also include that oxidation liquid storage is single
Unit, described oxidation liquid memory element includes oxidation reaction liquid storage tank, described oxidation reaction liquid storage tank and air processing unit
Fluid communication, more specifically, described oxidation reaction liquid storage tank is in fluid communication with oxidation processes unit.
In an embodiment of the present invention, described malodorous gas processing system can be with deliverying unit, described deliverying unit
Including discharger, described discharger is in fluid communication with except liquid unit, and described discharger may be used for discharge and stands except liquid
Gas after process.
Compared with prior art, this patent has the following advantages for foul gas processing method provided by the present invention and system
And effect:
1) described method applicability is strong, anti impulsion load, is applicable not only to water solublity odorant it can also be used to water solublity
Poor pollutant purification.
2) merge hydrotropy to absorb and porous absorption, enhance the mass transfer mistake that the pollutant in gas are transferred in liquid phase
Journey, enhances gas pollutant purification efficiency.
3) can change according to pollutant levels, adjust absorption-oxidation solution concentration in real time, improve being suitable for of response system
Scope.
4) use resistant material, there is not replacing problem and the after-treatment problem of filler.
Accompanying drawing explanation
Fig. 1 is shown as malodorous gas processing system schematic diagram of the present invention.
Fig. 2 is shown as malodorous gas processing system one detailed description of the invention schematic diagram of the present invention.
Element numbers explanation
11 air processing units
111 phase transfer processing units
112 oxidation processes unit
12 remove liquid unit
13 phase transfer reaction liquid memory element
14 oxidation liquid memory element
15 deliverying units
16 pending gases
21 tower bodies
211 phase transfer processing meanss
212 oxidation treatment devices
213 liquid removing devices
214 spray equipments
22 phase transfer reaction liquid storage tanks
23 oxidation reaction liquid storage tanks
24 dischargers
241 air-introduced machines
242 aiutages
25 dosing pumps
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by the most different concrete realities
The mode of executing is carried out or applies, the every details in this specification can also based on different viewpoints and application, without departing from
Various modification or change is carried out under the spirit of the present invention.
It should be clear that conventional equipment in the concrete process equipment indicated or device all use this area in the following example or
Device.
In addition, it is to be understood that the one or more method steps mentioned in the present invention do not repel before and after described combination step
Additive method step can also be there is or additive method step can also be inserted between these steps specifically mentioned, unless separately
It is described；Should also be understood that the combination annexation between the one or more equipment/devices mentioned in the present invention is not repelled
Can also exist before and after described unit equipment/device other equipment/devices or these two equipment/devices specifically mentioned it
Between can also insert other equipment/devices, except as otherwise noted.And, except as otherwise noted, the numbering of various method steps is only
Differentiate the convenient tool of various method steps, rather than for limiting the ordering of various method steps or limiting the enforceable model of the present invention
Enclose, being altered or modified of its relativeness, in the case of without essence change technology contents, enforceable when being also considered as the present invention
Category.
As in figure 2 it is shown, the present invention provides a kind of malodorous gas processing system, including the tower body as air processing unit
21, described reaction tower body can use the corrosion-resistant material such as fiberglass or polypropylene, and it can be 0.1～3m/ that void tower crosses Flow Velocity
S, the shape of tower body 21 can use cylindrical shape or square structure, and streamer mode is bottom in and top out or upper entering and lower leaving form, tower body
On manhole and observation port be set, observation port use before and after split form, in order to daylighting is observed；Tower body and circulating slot are linked as one
Body, to save occupation area of equipment.Described tower body 21 can include that multilamellar gas-liquid contact apparatus (can be separated, according to need
Want to be designed to 2 layers or more layers), such as tower body 21 is designed as two-layer gas-to-liquid contact unit, two-layer gas-to-liquid contact unit
It is respectively phase transfer processing means 211 and oxidation treatment device 212, every layer height 500～1200mm, gas-to-liquid contact unit wraps
Including gripper shoe, described gripper shoe uses the resistant material such as fiberglass, polyester, and plate is opened aperture, hole size 10～50mm, aperture
Flow velocity 3～7m/s, this gripper shoe, except support filler, also has gas distribution homogenizing effect.Each layer of described tower body 21 all can set
There is spray equipment 214, to realize the gas-to-liquid contact of pending gas and reactant liquor.The exit of described tower body 21 is provided with except liquid fills
Putting 213, when in tower, air-flow uses bottom in and top out form, liquid removing device 213 can be arranged in tower body；In tower, air-flow uses enterprising
Under when going out form, liquid removing device 213 can be arranged at tower body 21 air outlet.Liquid removing device 213 can be various liquid knockout, example
As being filtering type or baffle plate type.Described phase transfer processing means 211 can be provided with assistant carrier, described assistant carrier
For the hollow plastic ball of porous surface, bulb diameter size is 20～80mm, and material is the corrosion-resistant material such as polyester or polytetrafluoro material
Material, fills hydrophobic adsorbent material in baton round, described adsorbing material is the most hydrophobic, and described hydrophobic adsorbent material can
Thinking large aperture hydrophobic zeolite, hydrophobic mesoporous material etc., the shape of adsorbing material is not particularly limited, be specifically as follows spherical,
Granular or bar-shaped etc., can be such as the spheroidal particle of about 1-10mm.
Described malodorous gas processing system can also include discharger 24, described discharger 24 and liquid removing device 213
Fluid communication, is stood the gas after processing except liquid and can be discharged by discharger 24, and described discharger 24 can include example
Such as air-introduced machine 241, aiutage 242 etc..Described phase transfer reaction liquid storage tank 22 is in fluid communication with phase transfer processing means 211, phase
Dosing pump 25 it is also provided with on pipeline between transfer reaction liquid storage tank 22 and phase transfer processing means 211.Described oxidation is anti-
Liquid storage tank 23 is answered to be in fluid communication with oxidation treatment device 212, the pipe between oxidation reaction liquid storage tank 23 and oxidation treatment device 212
Dosing pump 25 can also be provided with on road.
Embodiment 1
Within 1st, process 500 tons of consumer waste incineration treatment plants, the foul waste gas amount in garbage storing hole under emergency condition
30000m3/ h, odor concentration 10000, phase transfer accelerator used is polyethers, and molecular weight is 600, its aqueous solution concentration
1wt%；Oxidant uses aqueous hydrogen peroxide solution, concentration 3wt%.Oxidizing tower uses bottom in and top out mode, and tower diameter is 4m, if
Put two-stage contact reaction unit, respectively phase transfer processing unit and oxidation processes unit (phase transfer processing unit be positioned at lower section,
Oxidation processes unit is above, and pending gas is introduced into phase transfer processing unit, enters back into oxidation processes unit), every grade
Highly 800mm, spray unit is made up of jet pipe and nozzle, and jet pipe and nozzle use resistant material, and liquid-gas ratio is 1L liquid/m3
Gas.Circulating pump used is corrosion-resistant centrifugal pump of horizontal axis, flow 30m3/ h, lift 25m.
Described reaction tower body uses glass steel material, and it is 0.8m/s that void tower crosses Flow Velocity, uses cylindric or square structure,
Streamer mode is bottom in and top out form, and tower body arranges manhole and observation port, split form before and after observation port employing, in order to adopt
Light is observed；Tower body is connected as a single entity with circulating slot, to save occupation area of equipment.When in tower, air-flow uses bottom in and top out form, remove
Liquid device is arranged in tower body, and liquid knockout uses filtering type or baffle plate type.In phase transfer processing means, sorptive material used is
Hydrophobic zeolite, round shaped grain shape, particle diameter 8mm, this material is built in assistant carrier.Assistant carrier used is the hollow plastic of surface hollow-out
Pellet, bulb diameter 30mm, the small aperture 6mm of surface hollow-out, to ensure that hydrophobic zeolite does not spills.
After this process system processes, aiutage height 15 meters, its outlet exhaust odor concentration is less than 300, far below " state
Family's emission standard for odor pollutants " setting 2000 of GB 14554-93.
Embodiment 2
Within 1st, process 600 tons of consumer waste incineration treatment plants, the foul waste gas amount in garbage storing hole under emergency condition
35000m3/ h, odor concentration 12000, phase transfer accelerator used is tetrabutyl phosphonium bromide, its aqueous solution concentration 5wt%；
Oxidant uses aqueous sodium hypochlorite solution, concentration 1wt%.Oxidizing tower uses bottom in and top out mode, and tower diameter is 4m, arranges two
(phase transfer processing unit is positioned at lower section, oxidation for level haptoreaction unit, respectively phase transfer processing unit and oxidation processes unit
Processing unit is above, and pending gas is introduced into phase transfer processing unit, enters back into oxidation processes unit), every grade of height
600mm, spray unit is made up of jet pipe and nozzle, and jet pipe and nozzle use resistant material, and liquid-gas ratio is 0.5L liquid/m3Gas
Body.Circulating pump used is corrosion-resistant centrifugal pump of horizontal axis, flow 30m3/ h, lift 25m.
Described reaction tower body uses glass steel material, and it is 2.5m/s that void tower crosses Flow Velocity, uses cylindric or square structure,
Streamer mode is bottom in and top out form, and tower body arranges manhole and observation port, split form before and after observation port employing, in order to adopt
Light is observed；Tower body is connected as a single entity with circulating slot, to save occupation area of equipment.When in tower, air-flow uses bottom in and top out form, remove
Liquid device is arranged in tower body, and liquid knockout uses filtering type or baffle plate type.In phase transfer processing means, sorptive material used is
Hydrophobic zeolite, round shaped grain shape, particle diameter 8mm, this material is built in assistant carrier.Assistant carrier used is the hollow plastic of surface hollow-out
Pellet, bulb diameter 30mm, the small aperture 6mm of surface hollow-out, to ensure that hydrophobic zeolite does not spills.
After this process system processes, aiutage height 15 meters, its outlet exhaust odor concentration is less than 300, far below " state
Family's emission standard for odor pollutants " setting 2000 of GB 14554-93.
Embodiment 3
Within 1st, process 800 tons of consumer waste incineration treatment plants, the foul waste gas amount in garbage storing hole under emergency condition
25000m3/ h, odor concentration 11000, phase transfer accelerator used is polyethers, and molecular weight is 400, its aqueous solution concentration
0.2wt%；Oxidant uses aqueous hydrogen peroxide solution, concentration 10wt%.Oxidizing tower uses bottom in and top out mode, and tower diameter is
4m, (phase transfer processing unit is positioned to arrange two-stage contact reaction unit, respectively phase transfer processing unit and oxidation processes unit
Lower section, oxidation processes unit is above, and pending gas is introduced into phase transfer processing unit, enters back into oxidation processes unit),
Every grade of height 1000mm, spray unit is made up of jet pipe and nozzle, and jet pipe and nozzle use resistant material, and liquid-gas ratio is 3L liquid
Body/m3Gas.Circulating pump used is corrosion-resistant centrifugal pump of horizontal axis, flow 30m3/ h, lift 25m.
Described reaction tower body uses glass steel material, and it is 0.2m/s that void tower crosses Flow Velocity, uses cylindric or square structure,
Streamer mode is bottom in and top out form, and tower body arranges manhole and observation port, split form before and after observation port employing, in order to adopt
Light is observed；Tower body is connected as a single entity with circulating slot, to save occupation area of equipment.When in tower, air-flow uses bottom in and top out form, remove
Liquid device is arranged in tower body, and liquid knockout uses filtering type or baffle plate type.In phase transfer processing means, sorptive material used is
Hydrophobic zeolite, round shaped grain shape, particle diameter 2mm, this material is built in assistant carrier.Assistant carrier used is the hollow plastic of surface hollow-out
Pellet, bulb diameter 30mm, the small aperture 1mm of surface hollow-out, to ensure that hydrophobic zeolite does not spills.
After this process system processes, aiutage height 15 meters, its outlet exhaust odor concentration is less than 300, far below " state
Family's emission standard for odor pollutants " setting 2000 of GB 14554-93.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (10)
1. a foul gas processing method, comprises the steps:
1) pending gas is carried out phase transfer process and oxidation processes；
2) gas after standing phase transfer process and oxidation processes is carried out except liquid processes.
2. a kind of foul gas processing method as claimed in claim 1, it is characterised in that described step 1) in, to pending
Gas carries out phase transfer process, carries out oxidation processes by standing the gas after phase transfer processes.
3. a kind of foul gas processing method as claimed in claim 1, it is characterised in that described phase transfer processes specially will
Phase transfer reaction liquid and pending gas carry out gas-to-liquid contact；
And/or, described phase transfer processes and carries out under conditions of adsorbing material exists.
4. a kind of foul gas processing method as claimed in claim 3, it is characterised in that described phase transfer reaction liquid includes phase
Transfer accelerator, the combination of one or more in polyethers, quaternary salt of the described phase transfer accelerator；
And/or, described phase transfer reaction liquid is the aqueous solution of phase transfer accelerator；
And/or, in described phase transfer reaction liquid, the concentration of phase transfer accelerator is 0.1-5wt%；
And/or, phase transfer reaction liquid is 0.5-3L liquid/m with the liquid-gas ratio of pending gas3Gas；
And/or, the combination of one or more in hydrophobic zeolite, hydrophobic mesoporous material of the described adsorbing material；
And/or, the aperture of described adsorbing material is 0.3nm-300nm.
5. a kind of foul gas processing method as claimed in claim 1, it is characterised in that described oxidation processes is specially oxygen
Change reactant liquor and carry out gas-to-liquid contact with pending gas.
6. a kind of foul gas processing method as claimed in claim 5, it is characterised in that described oxidation liquid includes oxidation
Agent, the combination of one or more in sodium hypochlorite, hydrogen peroxide, permanganate of the described oxidant；
And/or, described oxidation liquid is the aqueous solution of oxidant；
And/or, in described oxidation liquid, the concentration of oxidant is 1-10wt%；
And/or, oxidation liquid is 0.5-3L liquid/m with the liquid-gas ratio of pending gas3Gas.
7. a malodorous gas processing system, including: air processing unit (11) with except liquid unit (12), described gas treatment list
Unit (11) and except liquid unit (12) be in fluid communication, described air processing unit (11) includes phase transfer processing unit (111) and oxygen
Change processing unit (112), described phase transfer processing unit (111) and oxidation processes unit (112) fluid communication.
8. a kind of malodorous gas processing system as claimed in claim 7, it is characterised in that described phase transfer processing unit
(111), oxidation processes unit (112), be in fluid communication successively except liquid unit (12).
9. a kind of malodorous gas processing system as claimed in claim 7, it is characterised in that described phase transfer processing unit
(111) include that phase transfer processing means, described phase transfer processing means refer specifically to enter phase transfer reaction liquid with pending gas
The device of row gas-to-liquid contact；
And/or, described oxidation processes unit (112) includes that oxidation treatment device, described oxidation treatment device refer specifically to aoxidize
Reactant liquor and pending gas carry out the device of gas-to-liquid contact；
And/or, described include liquid removing device except liquid unit (12)；
And/or, also include that phase transfer reaction liquid memory element (13), described phase transfer reaction liquid memory element include that phase transfer is anti-
Liquid storage tank, described phase transfer reaction liquid storage tank is answered to be in fluid communication with phase transfer processing unit (111)；
And/or, also include that oxidation liquid memory element (14), described oxidation liquid memory element include that oxidation liquid stores up
Tank, described oxidation reaction liquid storage tank is in fluid communication with oxidation processes unit (12)；
And/or, also include deliverying unit (15), described deliverying unit includes discharger, described discharger with except liquid unit
Fluid communication.
10. a kind of malodorous gas processing system as claimed in claim 9, it is characterised in that described phase transfer processing means bag
Include adsorbing material.
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| CN201610804924.6A CN106237817A (en) | 2016-09-06 | 2016-09-06 | A kind of foul gas processing method and system |
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