CN105983306A - Gas purifying method and apparatus - Google Patents
Gas purifying method and apparatus Download PDFInfo
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- CN105983306A CN105983306A CN201510072555.1A CN201510072555A CN105983306A CN 105983306 A CN105983306 A CN 105983306A CN 201510072555 A CN201510072555 A CN 201510072555A CN 105983306 A CN105983306 A CN 105983306A
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a gas purifying method. The gas purifying method comprises the following steps: S10, a gas pretreatment step: pretreatment of gas discharged by industrial equipment, wherein pretreated gas components can be absorbed by microbes and gas temperature is beneficial for absorption of the microbes; and S20, a biological purification step: absorption and utilization of treated gas by the microbes. According to the invention, gas which cannot be absorbed and utilized by the microbes in gas discharged by industrial equipment is subjected to pretreatment so as to allow the gas to be easily utilized by the microbes, and the temperature of the gas is beneficial for absorption of the microbes; treated gas is introduced into the living environment of the microbes; and then in virtue of absorption and utilization by the microbes, substances without pollution are produced and discharged. Compared with the prior art, the method provided by the invention can reduce the concentration of gas with pungent smell in exhaust gas and enables the concentration of irritant gas to decrease to a value less than an olfactory threshold, thereby meeting demands of people for environmental health.
Description
Technical field
The present invention relates to industrial equipment efflux gas processing technology field, particularly relate to coating, copper-clad plate, rubbish
A kind of method for gas purification in the fields such as rubbish burning and device.
Background technology
In coating, copper-clad plate industry, the final all kinds of waste gas produced (include residual raw materials, intermediate, burning
The high-temp waste gas etc. of rear generation) typically processed by combustion method, want reaching country and local discharge standard
Ask, but, along with environmental protection work is increasingly paid attention to, add the odor threshold of people often than country and
The concentration that local discharge standard requires is much lower, and odor threshold refers to that people can smell the least concentration of certain taste,
The odor threshold of people substantially 0.03mg/m3, reach 25mg/m in gas concentration3Shi Renhui feels to stimulate.
The interior processing mode to incinerator exhaust gas of industry mainly uses in line pattern at present, for copper-clad plate field,
During gluing, the solvent of volatilization includes NxOx, Sox, HxSx, NMHC, lipid small-molecular-weight
Material, benzene micromolecular material, Small Phenolic Molecule material, ethers small-molecule substance etc., these mixed gas
After incinerator burns, containing sulfide, nitrogen oxides and multiple organic principle (being referred to as VOCs) in waste gas
Deng particular matter and (smelly containing ammonia containing producing part first sulfur, A Moni during imperfect combustion in this gas
Gas) etc. pungent type gas, though burning through incinerator, but the clean (place of RTO incinerator can not be processed completely
Reason efficiency only has 95-99%).These special materials, with intense stimulus and abnormal flavour stench, add low olfactory sensation
Threshold property, as easy as rolling off a log by the perception of people's olfactory sensation institute.
In prior art, the deodorization technique of gas has direct combustion method, Ozonation, sorption method, medicinal liquid
Ablution, absorption process, biological deodorization method, plasma deodorization method and catalyst oxidizing process etc..First,
Gas (process gases at the later abbreviation) temperature range produced due to incinerator is relatively wide, typically at 80 DEG C～200 DEG C
In the range of, and the exhaust temperature of the incinerator of various model is not quite similar；Secondly, the air quantity of place's process gases
Relatively big, from 10000m3/ h～12000m3/ h is different, and abnormal flavour is removed and required higher, processed abnormal flavour
Gas is difficult to remove with single method and meet not requirement by the perception of people's olfactory sensation institute, therefore, ozone oxidation
The traditional methods such as method, sorption method, medicinal liquid ablution and plasma method are all unsuitable for carrying out incinerator exhaust gas
Deodorize.Meanwhile, combustion method is not notable for acid or inorganic waste gases effect, carries out the waste gas after burning
Detection, Main Ingredients and Appearance is sulfur dioxide, nitrogen oxides and part organic principle, has strong impulse gas
Taste.It addition, the organic principle in waste gas has low olfact characteristic, organic substance is the completeest when burning
Oxidized, produce secondary pollution, directly the cost of combustion method is the most at a relatively high again, so traditional process side
Method all can not reach actual demand in many-sides such as cost, safety, treatment effeciencies.
In sum, the efflux gas existence of industrial equipment of the prior art processes not thorough, zest gas
The gas concentration of taste is beyond defects such as human body odor thresholds.
Summary of the invention
It is an object of the present invention to provide a kind of method for gas purification, the concentration of irritative gas can be made to drop
As little as below human body odor threshold, protect Environmental Health.
Further object is that a kind of gas cleaning plant of offer, by using this device can be to work
The tail gas of the discharge of industry equipment makees purified treatment, makes the concentration of efflux gas moderate stimulation gas be reduced to human body
Below odor threshold.
For reaching this purpose, the present invention by the following technical solutions:
On the one hand, it is provided that a kind of method for gas purification, comprise the steps:
S10, gas pre-treatment step: make the gas of row outside industrial equipment carry out pretreatment, pretreated gas
Body composition can be absorbed by the micro-organisms, and gas temperature suitable micro-organisms absorbs；
S20, biological cleaning step: make the gas after being processed be absorbed by the micro-organisms utilization.
Wherein, S10, gas pre-treatment step include:
S101, make outside industrial equipment the gas of row lower the temperature, and remove the solable matter in gas；
Preferably, make the gas of row outside industrial equipment contact with coolant, so that gas is lowered the temperature, and go
Solable matter in degasification body.
Wherein, in step S101, described coolant is used the reflux type contrary with gas flow direction
Contact with the gas of row outside industrial equipment, and/or, described coolant is used identical with gas flow direction
And stream mode contacts with the gas of row outside industrial equipment.
Wherein, S10, gas pre-treatment step include:
S102, the gas of row is made outside industrial equipment to contact with reaction solution, to neutralize the Acidity of Aikalinity of described gas；
Preferably, described reaction solution contacts with described gas by the way of spray.
Wherein, S10, gas pre-treatment step include:
S103, removal gas are difficult to the emplastic being absorbed by the micro-organisms；
Preferably, described gas is centrifuged separate, with isolate in described gas can not be by microorganism
The emplastic absorbed.
Wherein, S10, gas pre-treatment step include:
S104, use prior to step S20 the mode of heat exchange described gas temperature adjusted to microorganism can profit
Use temperature.
Wherein, step S20 includes:
Step S201, offer microorganism fungus kind and carrier thereof, to form the biomembrane possessing anti-impact force；
Step S202, to described biomembrane provide through step S10 process after gas, make microorganism absorb profit
Use described gas, be converted into innocuous substance and discharge.
Wherein, in step S201, described biomembrane is carried out moistening process, with at described biomembranous table
Layer forms wettable layer.
Wherein, described carrier has erose many cavities structure；
Preferably, described carrier uses ashstone.
On the other hand, it is provided that a kind of gas cleaning plant, described method for gas purification is used.
Compared with prior art, beneficial effects of the present invention: the present invention is by the gas first will arranged outside industrial equipment
Body carries out pretreatment, makes gas be prone to by microorganism and utilizes, and gas temperature suitable micro-organisms absorbs, then
Gas after processing is passed through in microbe survival environment, is absorbed by microorganism, and final generation is without dirty
The material of dye discharges.Relative to conventional art, the method can reduce the penetrating odor in gas
Gas concentration, makes the gas concentration of irritative gas be down to below the odor threshold of human body, meets human body to ring
The demand that border is healthy.
Accompanying drawing explanation
Below according to drawings and Examples, the present invention is described in further detail.
Fig. 1 is the flow chart of the method for gas purification provided according to one embodiment of the invention；
Fig. 2 is the flow chart of step S10 provided according to one embodiment of the invention；
Fig. 3 is the flow chart of step S10 provided according to another embodiment of the present invention；
The flow chart of step S20 that Fig. 4 provides according to one embodiment of the invention；
Fig. 5 is the structural representation of the gas cleaning plant provided according to the first embodiment of the present invention；
Fig. 6 is the structural representation of the gas cleaning plant provided according to the second embodiment of the present invention；
Fig. 7 is the structural representation of the gas cleaning plant according to the third embodiment of the invention provided；
Fig. 8 is the structural representation of the gas cleaning plant provided according to the fourth embodiment of the invention.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Fig. 1 is the flow chart of the method for gas purification provided according to one embodiment of the invention.As it is shown in figure 1,
In the present embodiment, a kind of method for gas purification comprises the steps:
S10, gas pre-treatment step: make the gas of row outside industrial equipment carry out pretreatment, pretreated gas
Body composition can be absorbed by the micro-organisms, and gas temperature suitable micro-organisms absorbs；
S20, biological cleaning step: make the gas after being processed be absorbed by the micro-organisms utilization.
The present invention passes through can not be absorbed by the micro-organisms in the gas first will arranged outside industrial equipment the gas of utilization and carries out
Pretreatment, including removing sulphide removal and nitrogen oxides etc., makes gas be prone to by microorganism and utilizes, and gas
Proper temperature microorganism absorb, then will process after gas be passed through in microbe survival environment, pass through microorganism
Absorbing, the free of contamination material of final generation discharges.Relative to conventional art, the method can drop
The gas concentration of the penetrating odor in low gas, makes the gas concentration of irritative gas be down to the olfactory sensation of human body
Below threshold value, meet the human body demand to Environmental Health.
In one embodiment of the invention, S10, gas pre-treatment step include: S101, make outside industrial equipment
The gas of row is lowered the temperature, and removes the solable matter in gas；Preferably, row outside industrial equipment is made
Gas contacts with coolant, to lower the temperature gas, and removes the solable matter in gas.By adopting
By the mode of water-cooled, can make to be lowered the temperature by the gas of industrial equipment high temperature and high speed, alternatively, it is also possible to will
The solable matters such as particulate matter in gas, water-soluble substances are removed.In the present embodiment, by by cold
But liquid is fully contacted with gas, from 200-250 DEG C, gas temperature can be down to about 80-120 DEG C.
In another embodiment of the present invention, in step S101, described coolant is used and flows with gas
Reflux type in opposite direction, and/or, described coolant is used identical with gas flow direction and the side of stream
Formula contacts with the gas of row outside industrial equipment.Due to industrial equipment expellant gas complicated component, wherein, can
The gaseous matter of different densities can be contained, after gas is discharged by industrial equipment, low-density gas meeting
Moving upward, employing moves contrary reflux type and contacts with this kind of gas, is more beneficial for increasing contact
Area, it is ensured that cooling-down effect and the removal effect of solable matter；High density gas then can move downward, and adopts
Contact with this kind of gas by the also stream mode moving direction, direction identical, be more beneficial for increasing contact area,
Ensure cooling-down effect and the removal effect of solable matter.Preferably, in step S101, described coolant
It is used the reflux type contrary with gas flow direction, and described coolant is used and gas flowing side
Contact with the gas of row outside industrial equipment to identical also stream mode.Being so designed that, no matter how gas moves,
May ensure that gas is lowered the temperature with being fully contacted of coolant.
In one embodiment of the invention, S10, gas pre-treatment step include: S102, make outside industrial equipment
The gas of row contacts with reaction solution, to neutralize the Acidity of Aikalinity of described gas.Acid or alkaline anti-by using
Answer solution to be neutralized reaction with the gas of outer row, reach the purpose of the acid-base value of balanced gas.Preferably,
Reaction solution contacts with described gas by the way of spray.
In one embodiment of the invention, step S101, S102 can be carried out, the most successively the most first to described gas
Body carries out lowering the temperature and removing water-soluble substances, is neutralized reaction the most again to balance its acid-base value.The present invention
Another embodiment in step S101, S102 can also carry out simultaneously, the most described gas is lowered the temperature,
Remove water-soluble substances, and neutralize the acid-base value of molecular balance gas.In one more embodiment of the present invention,
Step S101 and/or step S102 can also be repeated a number of times.
In one embodiment of the invention, S10, gas pre-treatment step include: in S103, removal gas not
The emplastic being easily absorbed by the micro-organisms；Preferably, it is centrifuged described gas separating, to isolate
State the emplastic that can not be absorbed by the micro-organisms utilization in gas.Emplastic can be separated out after gas condenses,
This emplastic can cause microorganism to lose activity, and weakens or directly results in microorganism death, by this step
Suddenly these emplastics are removed, it is ensured that follow-up microbial reaction is the most effectively carried out.Certainly,
In other embodiments of the invention, it is also possible to use aqueous solution standing, the mode of layered filtration, by bottom
Emplastic remove.
In one embodiment of the invention, S10, gas pre-treatment step include: S104, prior to step S20
Described gas temperature is adjusted to microorganism and may utilize temperature by the mode using heat exchange.It is micro-gas is supplied
Before biological utilisation, gas temperature is adjusted to the scope that disclosure satisfy that growth of microorganism needs, it is ensured that micro-
The effect of bio-absorbable gas.In the present embodiment, by heat exchanger, gas is lowered the temperature, be down to 40 DEG C～60 DEG C
In the range of be i.e. provided to microorganism use.
Fig. 2 is the flow chart of step S10 provided according to one embodiment of the invention.As in figure 2 it is shown, in
In the present embodiment, step S10 includes following steps sequentially: S101', provides coolant, makes industrial equipment
The gas of outer row is fully contacted with coolant, to lower the temperature gas, and removes the solubility thing in gas
Matter；S102', offer reaction solution, make described gas be fully contacted with reaction solution, to neutralize described gas
Acidity of Aikalinity；S103', make described gas be centrifuged separate, with isolate in described gas can not be micro-
The emplastic that bio-absorbable utilizes；Described gas temperature is down to micro-life by S104', the mode of employing heat exchange
Thing may utilize temperature.
Fig. 3 is the flow chart of step S10 provided according to another embodiment of the present invention.As it is shown on figure 3,
In the present embodiment, step S10 includes following steps sequentially: S101 ", coolant is provided and reacts molten
Liquid, makes the gas of row outside industrial equipment be fully contacted with coolant and reaction solution, so that gas is lowered the temperature,
Remove the solable matter in gas, and neutralize the Acidity of Aikalinity of described gas；S102 ", make described gas carry out
Centrifugation, to isolate the emplastic that can not be absorbed by the micro-organisms utilization in described gas；S103″、
Described gas temperature is down to microorganism and be may utilize temperature by the mode using heat exchange.
In one embodiment of the invention, step S20 includes: step S201, provide microorganism fungus kind and
Carrier, to form the biomembrane possessing anti-impact force；Step S202, to described biomembrane provide through step
Gas after S10 process, makes microorganism absorb described gas, is converted into innocuous substance and discharges.
Biological purification method uses bio-immobilized technology and technology of biological membrane, i.e. microorganism fungus kind is fixed on
Forming a kind of biomembrane on high-performance bio carrier, biomembrane is to be formed a kind of compound system by multiple strain, depends on
Complete the organic pollution in waste gas is carried out biodegradation by biomembrane.Biodegradation utilizes microorganism
Biological chemistry action, using the Organic substance in organic exhaust gas as the substrate needed for its growth and breeding, by microorganism
Absorb, metabolism and utilization, by different path for transformation by macromole or baroque Organic substance through alienation
Effect is finally degraded to the inorganic matters such as simple water, carbon dioxide, simultaneously through assimilation and utilize alienation to make
The energy produced during with, makes the organism of microorganism obtain increasing breeding, for playing it further to having
The disposal ability of machine thing creates favourable condition.
The advantage of biological purification method: waste gas is concentrated after collection system is collected and delivered to biological purifier process,
Utilize microbial cell to the absorption of polluter, absorption and degradation function in waste gas to eliminate pollutant.Micro-
Biological cell individual is little, specific surface area is big, adsorptivity is strong, metabolic type is various, can be effectively pollutant
It is degraded to CO after matter absorption2、H2O、H2SO4Etc. simple inorganic substances.Aerobic microorganism is utilized right
Organic exhaust gas and stench/gas with foreign flavor carry out decomposing and oxidation becomes and discharges without odour, due to biofiltration
Use utilizes natural resources or reuse resource to do raw material, greatly reduces enterprise investment and becoming of safeguarding low operation
This, be suitable for doing the adsorption treatment of organic exhaust gas, and after biofiltration adsorption treatment, organic exhaust gas becomes tasteless gas
Body, the efficiency of deodorization/eliminate the unusual smell is more than 90%.
Preferably, in step S201, described biomembrane is carried out moistening process, with described biomembranous
Top layer forms wettable layer.By carrying out moistening process at biofilm surface, biomembranous surface is made to be coated with water
Solution layer, the chemical substance in waste gas is dissolved at table after contacting with aqueous layer, absorption, from gas phase conversion is
Liquid phase, is beneficial to microorganism and further absorbs decomposition.In one embodiment of the invention, by biology
The timing spray of filler every day, makes biofilm surface cover aqueous layer, the harmless object of generation and a little other
Untreated material cleans to get rid of in water with shower water, owing to its concentration is the lowest, in certain concentration range,
Shower water can recycle.Water pump for shower water sprays the need of operation continuously or timing, debugging
Time determine according to biomembranous growing state and temperature, and set up self-con-tained unit.Microorganism has adaptive ability,
Therefore, biomembrane has certain impact resistance, i.e. can stick on carrier, it is impossible to rushed by shower water
Fall.
In order to further enhance biomembranous impact resistance, the preferred described carrier of one embodiment of the invention
Use ashstone.There is more cavity in ashstone itself, and in irregular, porous characteristic
Make it have the specific surface area of super large, when its surface cover aqueous layer time, can make gas and water biphase have bigger
Contact area, can effectively increase gaseous substance transmission diffusion rate in aqueous phase, waste gas through moistening,
Porous and the biomembrane of full active microorganism, it is possible to ensure the percent of pass of described gas, substantially increase
The treatment effeciency of biological purifier；Simultaneously as biomembrane has strong anti-impact force, biomembrane is carried out
During spray, water and described gas will not be taken away microorganism and reduce the quantity of overall microorganism, to ensure biology
The structural stability of film.In other embodiments of the invention, described carrier can also use conductivity good,
Thermal capacity sintering low, corrosion resistant pottery, multi-layer ceramics fiber, honeycomb metal, porous metals and various
Foaming object etc..
The efficient microbial strain that the microorganism of the present invention is screened according to exhaust gas properties.
The flow chart of step S20 that Fig. 4 provides according to one embodiment of the invention.As shown in Figure 4, Yu Ben
In embodiment, step S20 includes: step S201', offer microorganism fungus kind and carrier thereof, formation possesses
The biomembrane of anti-impact force；Step S202', described biomembrane is carried out moistening process, with at described biomembrane
Top layer formed wettable layer；Step S203', to described biomembrane provide described gas, the dirt in described gas
Dye material dissolves at table after contacting with wettable layer, absorption, is liquid phase from gas phase conversion；Step S204', liquid phase
Polluter is absorbed by the micro-organisms, and by the oxidation degradation polluter of microorganism, final discharge is harmless
Material.
Embodiments of the invention additionally provide a kind of gas cleaning plant, including for making the outer aerofluxus of industrial equipment
The pre-processing device of body pretreatment, and for pretreated described gas is carried out biodegradable biology
Depurator.Wherein, pre-processing device includes temperature-adjusting device, media separating apparatus.
The present invention uses biological purifier, relative to biofilter, bio-trickling filter, zinc cation tower,
There is the advantage of following several respects:
1, deodorizing performance is good, and durability is strong, processes the time short, and efficiency is high.Wherein, deodorizing performance sulfuration
The conversion ratio of methyl is evaluated, based on this metewand, sulfur-containing foul material clearance more than 95%,
Other material more than clearance 75%-95%.
2, system structure is simple, and occupation area of equipment and volume are little, invest low.
3, after biofilm molding of biological inoculum, it is not required to add again biological inoculum.Biological inoculum and filler use
Life-span is long, reaches more than 5 years；Through updating activation after 5 years, can be continuing with again.Without as activated carbon one
Within about individual month, just need to change.Simultaneously as the microbe species in biological purifier is various, for the present invention
Complex waste gas composition have different types of microorganisms to participate in degraded, tame out the efficient raw of process multiple compounds
Thing film, thus efficiently solve the difficult problem that exhaust gas constituents of the present invention is complicated.
4, system operation management is easy, is not required to special messenger and is responsible for.Stable, crushing is few, is not easily blocked, and goes out
Fault (blower fan and water pump) probability is low.
5, according to practical situation and requirement, can be centralized, it is also possible to be distributing.
Based on above feature, especially microorganism used therefor strain and filler has special advantage, biological clean
Change efficiency height, time short (general needs several seconds kinds), thus, volume and the floor space of biological purifier are little,
Can be placed in balcony, roof or workplace.
6, can process and can separate out the high-temp waste gas of the material with stickiness when cooling condensation.
Therefore, the present invention uses process gases abnormal flavour at biological purifier, owing to the growth of microorganism has temperature
Toleration and requirement to humidity, and waste gas of the present invention can separate out when cooling condensation and have stickiness
Material, for preventing the blocking of biologic packing material, when entering this high efficient biological purifying device, need to use pre-place
Reason equipment.
In one embodiment of the invention, described temperature-adjusting device includes: impact type temperature-reducing tower, described fall
Temperature tower has temperature-reducing tower air inlet and temperature-reducing tower exhaust outlet, and described temperature-reducing tower air inlet is by air-introduced machine and industry
Equipment air vent connects, and is provided with the cooling bay of coolant in described temperature-reducing tower, and described temperature-reducing tower is built with confession
Multiple outlet parts of described coolant injection, and be provided for being delivered to the coolant in described cooling bay
The water delivery part of described outlet part.By arranging water delivery part coolant is delivered to outlet part, and by multiple go out
Coolant is outwards ejected in water portion, and relative to traditional shower nozzle cooling form, shower nozzle is the most blocked, this programme
On the one hand can ensure that coolant normal injection；On the other hand the contact area of coolant and gas can also be increased,
It is more beneficial for gas is lowered the temperature.
It is delivered to described impact type temperature-reducing tower, high temperature and high speed through air-introduced machine by the high-temp waste gas of row outside industrial equipment
Waste gas enters cooling bay by the outlet part of multiple injection coolants, forms strong rapids on liquid and gas surface
Stream, the water on surface, by heating up, makes water high temperature evaporation take away heat energy, and heat is transferred to liquid phase from gas phase, from
And make gas be lowered the temperature；It addition, particulate matter, water-soluble substances in described gas also can obtain pre-at this
Remove.
Under the high temperature conditions, cooling water evaporation causes moisture loss, should periodically carry out water source and supplement.Yu Benfa
In a bright embodiment, it is preferred that water intaking valve and liquid level sensor are set at the cooling bay of described temperature-reducing tower.
When liquid level sensor detects that liquid level is less than setting liquid level, water intaking valve is automatically switched on and intakes；When supplementing
When water reaches to set liquid level, water intaking valve is closed stopping water inlet.Certainly preferably implement at another of the present invention
In example, link-type water intaking valve also can be set at cooling bay, when liquid level is less than when setting liquid level, and link-type enters
Water valve automatically opens up and intakes；When supplementary water reaches to set liquid level, link-type water intaking valve is in the effect of buoyancy
Under be automatically switched off.
In one embodiment of the invention, described media separating apparatus includes: the rotation that can separate medium
Stream tower, described eddy flow tower has eddy flow tower air inlet and eddy flow tower air outlet, described eddy flow tower air inlet and institute
State temperature-reducing tower air outlet to connect.Preferably, eddy flow tower uses the mode of centrifugation to carry out medium separation.High
Wet body, after impact type temperature-reducing tower is lowered the temperature, enters eddy flow tower, under the centrifugal action of incision at a high speed, and gas
Emplastic in body is got rid of to tower wall, thus reaches the purpose separated from gas by described emplastic.
In one embodiment of the invention, described pre-processing device also includes: heat exchanger, described heat exchange utensil
Heat exchanger air inlet and heat exchanger air outlet, described heat exchanger air inlet is had to be connected with described eddy flow tower air outlet.
By arranging heat exchanger, gas final temperature is down to the receivable temperature of microorganism, raw to meet microorganism
Deposit needs.
In one embodiment of the invention, described biological purifier has depurator air inlet and depurator air-out
Mouthful, described depurator air inlet is connected with described heat exchanger air outlet, and described depurator air outlet passes through air draft
Machine externally discharges.
In one embodiment of the invention, described pre-processing device also includes: spray column, described spray column bag
Including the first spray portion, described first spray portion at least has the first shower nozzle that can stretch in described temperature-reducing tower,
Described first spray portion connects the liquid-supplying system providing reaction solution.By arranging the first spray portion to temperature-reducing tower
Interior injection reaction solution, can play the Acidity of Aikalinity neutralizing gas.Because the complicated component of gas, it is contemplated that
Having the gas of part indissoluble in gas, the reaction solution of injection can be with the above-mentioned indissoluble gases of assist absorption.
Specifically, if the indissoluble composition of gas is acidity, then the basic agent spraying low concentration neutralizes；As
Really the indissoluble composition of gas is alkalescence, then the acid medicine spraying low concentration neutralizes.
In another embodiment of the present invention, described spray column also includes: the second spray portion, described second spray
Pouring portion at least has the second shower nozzle that can stretch in described eddy flow tower, described second spray portion and described feed flow
System connects.Due to emplastics a lot of in being separated by high speed centrifugation in eddy flow tower, these emplastics one
Denier enters biological purifier and microorganism then can be caused to lose activity, and weakens or directly results in microorganism death,
Thus affect microbial reaction activity, by arranging the second spray portion by moisture film/cleanout fluid to these stickies
Matter is carried out discharging, so that it is guaranteed that emplastic does not enter follow-up biological purifier.
In one more embodiment of the present invention, described spray column also includes: equipped with the First Heat Exchanger of cooling water
With the second heat exchanger, described First Heat Exchanger and described first spray portion carry out heat exchange, described second heat exchange
Device and described second spray portion carry out heat exchange.By arrange two heat exchangers respectively with the first spray portion and second
Spray portion carries out heat exchange so that the solution temperature that the first spray portion and the second spray portion eject is relatively low,
While realizing carrying out reacting or cleaning emplastic with gas, it is possible to achieve the cooling again to gas.
Described First Heat Exchanger and the second heat exchanger are all connected with circulating cooling water tower, by described recirculated cooling water
Tower carries Cooling Water to described First Heat Exchanger and the second heat exchanger.Due to First Heat Exchanger and the second heat exchanger
After the first spray portion and the second spray portion are carried out heat exchange, cooling water temperature raises, in order to ensure that heat exchange is imitated
Really, First Heat Exchanger and the second heat exchanger is made to be all connected with circulating cooling water tower, it is ensured that the supply of its cooling water is asked
Topic, thus ensure that the first spray portion and the heat transfer effect in the second spray portion.
In one embodiment of the invention, arrange between described temperature-reducing tower air outlet and described eddy flow tower air inlet
There is negative pressure device, and/or, between described eddy flow tower air outlet and described heat exchanger air inlet, negative pressure device is set,
And/or, between described heat exchanger air outlet and described depurator air inlet, negative pressure device is set.Set by above-mentioned
Meter, can make gas directly be sucked into after being discharged by temperature-reducing tower in eddy flow tower, eddy flow tower after discharging directly
It is inhaled into heat exchanger, heat exchanger after discharging, is directly inhaled into biological purifier, it is therefore prevented that during the stop of gas
Between, namely prevent the mutual play of gas to affect the problem of clean-up effect, needed for also ensure that gas flowing
Power.
In one embodiment of the invention, described temperature-reducing tower and/or described eddy flow tower connect drainage.Due to
Containing more pollutant in gas, and in certain Acidity of Aikalinity, need periodically to be emitted into by this effluent part
Sewage plant processes.
Fig. 5 is the structural representation of the gas cleaning plant provided according to the first embodiment of the present invention.Such as Fig. 5
Shown in, in the present embodiment, gas cleaning plant includes: the temperature-reducing tower that is sequentially connected with, eddy flow tower, heat exchange
Device and biological purifier, described temperature-reducing tower is connected with industrial equipment air exhausting device by air-introduced machine, biological cleaning
Device passes through the outside high altitude discharge of exhaust blower.The gas of the high temperature and high speed that industrial equipment is discharged causes fall through air-introduced machine
After Wen Tanei lowers the temperature for the first time, moistening gas enters eddy flow tower and is centrifuged separating, and isolates stickies
Gas after matter enters heat exchanger and carries out reducing temperature twice, until within the temperature range of being down to suitable micro-organisms utilization,
Gas enters biological purifier, discharges innocuous gas, outwards arrange through exhaust blower after being absorbed by microorganism
Put.
Fig. 6 is the structural representation of the gas cleaning plant provided according to the second embodiment of the present invention.Such as Fig. 6
Shown in, the difference of the present embodiment and first embodiment is: arrange negative pressure dress between temperature-reducing tower and eddy flow tower
Put, negative pressure device is set between eddy flow tower and heat exchanger, negative pressure dress is set between heat exchanger and biological purifier
Put.By arranging negative pressure device, it is provided that the power of supplied gas flowing, it is ensured that being smoothed out of purifying step.
Fig. 7 is the structural representation of the gas cleaning plant according to the third embodiment of the invention provided.Such as Fig. 7
Shown in, the present embodiment is with the difference of first embodiment: also include that spray column, spray column include that first changes
Hot device and the first spray portion composition the first heat-exchange apparatus, and the second heat exchanger and the second spray portion composition
The second heat-exchange apparatus, wherein, the first spray portion and the second spray portion are all connected with liquid-supplying system, by feed flow
System provides reaction solution for two spray portions；First Heat Exchanger and the second heat exchanger are all connected with circulating cooling water tower,
Cooling Water is carried to two heat exchangers by circulating cooling water tower；First spray portion connects temperature-reducing tower, in temperature-reducing tower
Injection reaction solution, it is possible to achieve neutralize the acid and alkali substance in gas while gas is lowered the temperature；The
Two spray portions connect eddy flow tower, spray reaction solution in eddy flow tower, can be to the emplastic separated
It is carried out getting rid of；Other and First Heat Exchanger and the second heat exchanger by the first spray portion and the second shower portion
Carry out heat exchange respectively, the temperature of the reaction solution of the first spray portion and the injection of the second spray portion can be reduced,
Strengthen the further cooling to gas.
Fig. 8 is the structural representation of the gas cleaning plant provided according to the fourth embodiment of the invention.Such as Fig. 8
Shown in, the present embodiment is with the difference of first embodiment: temperature-reducing tower and eddy flow tower are connected drainage respectively,
Due in gas containing a lot of acid and alkali substances, these materials after temperature-reducing tower and eddy flow tower by residual with
Wherein it is desired to regularly get rid of.
Industrial equipment of the present invention is the scope of a broad sense, refers to all and can produce dusty gas
Equipment, such as, RTO incinerator, direct-fired incinerator etc..
In description of the invention, it is to be understood that term " first ", " second ", it is used only for retouching
State and be distinguish between, the most special implication.
It is to be understood that, above-mentioned detailed description of the invention is only presently preferred embodiments of the present invention and used skill
Art principle, in technical scope disclosed in this invention, any those familiar with the art is held
The change being readily conceivable that or replacement, all should contain within the scope of the present invention.
Claims (10)
1. a method for gas purification, it is characterised in that comprise the steps:
S10, gas pre-treatment step: make the gas of row outside industrial equipment carry out pretreatment, pretreated gas
Body composition can be absorbed by the micro-organisms, and gas temperature suitable micro-organisms absorbs；
S20, biological cleaning step: make the gas after being processed be absorbed by the micro-organisms utilization.
A kind of method for gas purification the most according to claim 1, it is characterised in that S10, gas are pre-
Process step includes:
S101, make outside industrial equipment the gas of row lower the temperature, and remove the solable matter in gas；
Preferably, make the gas of row outside industrial equipment contact with coolant, so that gas is lowered the temperature, and go
Solable matter in degasification body.
A kind of method for gas purification the most according to claim 2, it is characterised in that in step S101
In, described coolant is used the reflux type contrary with gas flow direction and the gas of row outside industrial equipment
Contact, and/or, described coolant is used outside the also stream mode identical with gas flow direction and industrial equipment
The gas contact of row.
A kind of method for gas purification the most according to claim 1, it is characterised in that S10, gas are pre-
Process step includes:
S102, the gas of row is made outside industrial equipment to contact with reaction solution, to neutralize the Acidity of Aikalinity of described gas；
Preferably, described reaction solution contacts with described gas by the way of spray.
A kind of method for gas purification the most according to claim 1, it is characterised in that S10, gas are pre-
Process step includes:
S103, removal gas are difficult to the emplastic being absorbed by the micro-organisms；
Preferably, described gas is centrifuged separate, with isolate in described gas can not be by microorganism
The emplastic absorbed.
A kind of method for gas purification the most according to claim 1, it is characterised in that S10, gas are pre-
Process step includes:
S104, use prior to step S20 the mode of heat exchange described gas temperature adjusted to microorganism can profit
Use temperature.
A kind of method for gas purification the most according to claim 1, it is characterised in that step S20 includes:
Step S201, offer microorganism fungus kind and carrier thereof, to form the biomembrane possessing anti-impact force；
Step S202, to described biomembrane provide through step S10 process after gas, make microorganism absorb profit
Use described gas, be converted into innocuous substance and discharge.
A kind of method for gas purification the most according to claim 7, it is characterised in that in step S201
In, described biomembrane is carried out moistening process, to form wettable layer on described biomembranous top layer.
9. according to a kind of method for gas purification described in claim 7 or 8, it is characterised in that described carrier
There is erose many cavities structure；
Preferably, described carrier uses ashstone.
10. a gas cleaning plant, it is characterised in that use as described in any one of claim 1 to 9
Method for gas purification.
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| CN201510072555.1A CN105983306A (en) | 2015-02-10 | 2015-02-10 | Gas purifying method and apparatus |
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Application publication date: 20161005 |