CN105727733B - A kind of low-concentration organic exhaust gas fluidization tower - Google Patents

A kind of low-concentration organic exhaust gas fluidization tower Download PDF

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Publication number
CN105727733B
CN105727733B CN201610057205.2A CN201610057205A CN105727733B CN 105727733 B CN105727733 B CN 105727733B CN 201610057205 A CN201610057205 A CN 201610057205A CN 105727733 B CN105727733 B CN 105727733B
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area
adsorption
tower
fluidization
gas
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CN105727733A (en
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王莉
万玉山
邹涛
李大伟
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Shanghai Bosco Industry And Trade Co ltd
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Changzhou University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/72Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • B01D53/85Biological processes with gas-solid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/95Specific microorganisms
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

A kind of low-concentration organic exhaust gas fluidization tower is followed successively by muddy water area, fluidization regions, adsorption and oxidation area, dehumidifying area, activated carbon adsorption area and exhaust fan from tower bottom upwards;Muddy water area is designed to pyramidal structure, collects the muddy water from top, and the bottom of pyramidal structure is equipped with drain valve, and drain valve connects the sludge concentration tank outside tower;Fluidisation cylinder is equipped in fluidization regions, fluidisation cylinder is cylindrical barrel structure, positioned at the center of fluidization regions, the lower ending opening of fluidisation cylinder is located at the bottom of fluidization regions, upper end opening is located at the top of fluidization regions, and the lower end for fluidizing cylinder is equipped with air inlet pipe and gas distribution pipe, and gas distribution pipe is arranged to concentric circles;Adsorption and oxidation area is located at the top of fluidization regions;Adsorption and oxidation area top is equipped with dehumidifying area;Area top dehumidify equipped with activated carbon adsorption area.

Description

A kind of low-concentration organic exhaust gas fluidization tower
Technical field
The present invention relates to technical field of atmospheric pollution control, especially a kind of low-concentration organic exhaust gas fluidization tower.
Background technology
With economical activities of mankind and the rapid development of production, people also will largely give up while the largely consumption energy A large amount of uses that the substances such as gas and flue dust are discharged into air, particularly gasoline, paint, various organic solvents and other chemicals cause The discharge of volatile organic matter (VOCs) increases sharply, so as to which VOCs be made to become another important in addition to CO, SOx, NOx Gaseous pollutant, wherein industrial production sector become one of main industry of VOCs pollutions.These organic exhaust gas mainly include Hydro carbons (butane, dichloromethane), benzene homologues (benzene,toluene,xylene), alcohols (ethyl alcohol, methanol), aldoketones (formaldehyde, acetone, Cyclohexanone) etc..These pollutants often have that complicated component, type is various, toxicity is big, easy conversion, easy accumulation difficult to degrade, Yi Sheng Object enrichment, can longer-term persistence in the environment the features such as, mutagenic " three cause " substance of even carcinogenic teratogenesis or interference human body Endocrine substance seriously affects environmental quality, influences human health, therefore the discharge capacity for cutting down VOCs becomes various countries' environmental protection One important content of work.
Due to organic exhaust gas pollutant often concentration it is low, it is large-minded, pollution it is wide, heating power burn, catalysis burning, it is cold It is solidifying, absorb and traditional treatment technology such as absorption more or less can there is economy, the limitations of technology.Plasma technique is used Become one of hot topic studied both at home and abroad in each pollutant of processing.It has treating capacity in terms of the difficult drop drop organic exhaust gas of processing Greatly, it is widely applicable, chemical reaction it is rapid, easily operated the advantages that and be widely used, however at present the technology there is also some Problem.
In recent years, Purification biotechnology is increasingly taken seriously for handling organic exhaust gas.Purification biotechnology refers to Microorganism is cultivated on filtrate medium, organic matter is decomposed by microorganism by the use of the organic principle in exhaust gas as carbon source and the energy Carbon dioxide and water, Purification biotechnology are suitble to handle the good gaseous pollutant of low concentration, biodegradability.At present, it is external Many countries such as Germany, Holland, the U.S. and state of Japan achieve success using the technical finesse organic exhaust gas, and China should With less.
Invention content
The technical problem to be solved by the present invention is to:Overcome the problems in existing VOCs treatment, a kind of low concentration is provided Various low-concentration organic exhaust gas can be effectively treated in organic exhaust gas fluidization tower, simple in structure, easy to operate.
The technical solution adopted by the present invention to solve the technical problems is:A kind of low-concentration organic exhaust gas fluidization tower, from tower Bottom is followed successively by muddy water area, fluidization regions, adsorption and oxidation area, dehumidifying area, activated carbon adsorption area and exhaust fan upwards.
The muddy water area is located at the lowest part of entire tower;The muddy water area is designed to pyramidal structure, collects from upper The muddy water in portion, the bottom of pyramidal structure are equipped with drain valve, and drain valve connects the sludge concentration tank outside tower.
The isolation board of hole is provided between the muddy water area and fluidization regions.
Fluidisation cylinder is equipped in the fluidization regions, fluidisation cylinder is cylindrical barrel structure, positioned at the center of fluidization regions, fluidisation The lower ending opening of cylinder is located at the bottom of fluidization regions, and upper end opening is located at the top of fluidization regions, and the lower end for fluidizing cylinder is equipped with air inlet pipe And gas distribution pipe, the gas distribution pipe are arranged to concentric circles;The top for fluidizing cylinder is equipped with nutrient solution spray equipment, the battalion Nutrient solution spray equipment is connected with nutrient solution adding device, and the nutrient solution adding device includes nutrient tank and agitating device, Nutrient solution adding device connects nutrient solution circulating pump with valve by pipeline, and the nutrient solution spray equipment is sprayed for helical form Device, the liquid ejected are presented mist, and mixing together between water mist, do not stay dead angle.It is fluidized in fluidization regions full of polyethylene Hollow ball, the polyethylene fluidisation hollow ball have the advantages that unit volume biomass is big.
Further, supernatant of the nutrient solution for the sludge concentration tank outside low-concentration organic exhaust gas fluidization tower.
The adsorption and oxidation area is located at the top of fluidization regions, and the adsorption and oxidation area is equipped with adsorption stuffing, described Adsorption stuffing is by concentration basin sludge, feces of livestock and poultry, sawdust and polyethylene hollow ball by volume 1:1:5:10 are mixed.
The adsorption and oxidation area top is equipped with dehumidifying area, and dehumidifying area is to be collected the big drop in gas, and make Return, reduce the moisture in gas, operation principle is that gas enters dehumidifying area, by a series of bends, is discharged from top, And water droplet is due to the effect of its quality and kinetic energy, when by racetrack portion, straight line falls, and collides the surface in dehumidifying area, and It rebounds under gravity.Dehumidifying area is provided with silk screen dehumidifier.
The dehumidifying area top is equipped with activated carbon adsorption area, and activated carbon is set in the activated carbon adsorption area, activity Charcoal requires the advantages of hole prosperity, large specific surface area, adsorption rate fast, anti-friction, resistance to flushing, by the fortune of long period Row finds that activated carbon becomes sticky, and gas velocity need to replace activated carbon in time when reducing.
Specifically, be cylinder, upper and lower ends among the low-concentration organic exhaust gas fluidization tower be conical tower body, institute State offered on tower body observation port and maintenance replacement port, tower body volume size according to pending gas flow number depending on, use Vertical vertical placement.
For ease of the clean gas discharge handled, the conical tower of the low-concentration organic exhaust gas fluidization tower topmost Exhaust fan is installed at body.
The invention has the advantages that exhaust gas is entered by air inlet pipe and gas distribution pipe in fluidization regions, gas distribution pipe is realized uniform Gas distribution fluidizes the air-flow in cylinder and polyethylene fluidisation hollow ball is driven to generate fluidization, and flow up, while to polyethylene stream Change hollow ball to be washed away, air-flow drives polyethylene fluidisation hollow ball to enter the peripheral region for fluidizing cylinder, and in the effect of gravity It is lower constantly to move from top to bottom, while nutrient solution spray equipment is to polyethylene fluidisation hollow ball sprinkling nutrient solution, polyethylene fluidisation Microorganism on hollow ball carries out self-reproduction, polyethylene fluidisation using the pollutant in the nutriment and exhaust gas in nutrient solution The sludge and extra nutrient solution that hollow ball comes off are flowed into muddy water area, and the sludge concentration tank being discharged by drain valve outside tower is dirty The supernatant of mud thickener enters back into nutrient solution spray equipment by pipeline and circulating pump, recycles as nutrient solution;Exhaust gas Ascend into adsorption and oxidation area, by the microorganism adsorption in adsorption stuffing and biochemical reaction occurs for the pollutant in exhaust gas;Gas Subsequently into dehumidifying area, the drop in gas is blocked herein;Then gas enters activated carbon adsorption area, institute in gas The substance and drop being mingled with are intercepted absorb herein, and so far exhaust gas is processed into clean gas, realize qualified discharge; The low-concentration organic exhaust gas fluidization tower of the present invention is simple in structure, and easily fabricated, easy to operate, operating cost is low, can be effectively treated Various low-concentration organic exhaust gas.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structure diagram of the embodiment of the present invention;
In figure:1. muddy water area, 1-1. drain valves, 1-2. isolation boards, 2. fluidization regions, 2-1. fluidisation cylinders, 2-2. air inlet pipe, 2- 3. gas distribution pipe, 2-4. nutrient solution spray equipments, 2-5. nutrient solution adding devices, 2-6. nutrient solution circulating pumps, 2-7. polyethylene streams Change hollow ball, 3. adsorption and oxidation areas, 3-1. adsorption stuffings, 4. dehumidifying areas, 5. activated carbon adsorption areas, 6. exhaust fans.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
Embodiment
A kind of low-concentration organic exhaust gas fluidization tower of the present invention as shown in Figure 1, muddy water area is followed successively by from tower bottom upwards 1st, fluidization regions 2, adsorption and oxidation area 3, dehumidifying area 4, activated carbon adsorption area 5 and exhaust fan 6.
The muddy water area 1 is located at the lowest part of entire tower;The muddy water area 1 is designed to pyramidal structure, and collection comes from The muddy water on top, the bottom of pyramidal structure are equipped with drain valve 1-1, the sludge concentration tank outside drain valve 1-1 connection towers.
The isolation board 1-2 of hole is provided between the muddy water area 1 and fluidization regions 2.
Fluidisation cylinder 2-1 is equipped in the fluidization regions 2, fluidisation cylinder 2-1 is cylindrical barrel structure, positioned at fluidization regions 2 Center, the lower ending opening of fluidisation cylinder 2-1 are located at the bottom of fluidization regions, and upper end opening is located at the top of fluidization regions, fluidisation cylinder 2-1's Lower end is equipped with air inlet pipe 2-2 and gas distribution pipe 2-3, the gas distribution pipe 2-3 are arranged to concentric circles;Fluidize the top of cylinder 2-1 Equipped with nutrient solution spray equipment 2-4, the nutrient solution spray equipment 2-4 is connected with nutrient solution adding device 2-5, the battalion Nutrient solution adding set includes nutrient tank and agitating device, and nutrient solution adding device connects nutrient solution cycle by pipeline with valve 2-6 is pumped, the nutrient solution spray equipment 2-4 is helical form spray equipment, and mist is presented, and between water mist in the liquid ejected Dead angle is not stayed in mixing together.Have single full of polyethylene fluidisation hollow ball 2-7, the polyethylene fluidisation hollow ball in fluidization regions The advantages of position volume biomass is big.
Further, supernatant of the nutrient solution for the sludge concentration tank outside low-concentration organic exhaust gas fluidization tower.
The adsorption and oxidation area 3 is located at the top of fluidization regions 2, and the adsorption and oxidation area 3 is equipped with adsorption stuffing 3-1, The adsorption stuffing 3-1 is by concentration basin sludge, feces of livestock and poultry, sawdust and polyethylene hollow ball by volume 1:1:5:10 mixing It is made.
The adsorption and oxidation area top is equipped with dehumidifying area 4, and dehumidifying area 4 is to be collected the big drop in gas, and It is allowed to return, reduces the moisture in gas, operation principle is that gas enters dehumidifying area 4, by a series of bends, is arranged from top Go out, and water droplet is due to the effect of its quality and kinetic energy, when by racetrack portion, straight line falls, and collides the surface in dehumidifying area, and It rebounds under the effect of gravity.Dehumidifying area is provided with silk screen dehumidifier.
The dehumidifying area top is equipped with activated carbon adsorption area 5, and activated carbon is set in the activated carbon adsorption area 5, living Property charcoal the advantages of requiring hole prosperity, large specific surface area, adsorption rate fast, anti-friction, resistance to flushing, by the long period Operation finds that activated carbon becomes sticky, and gas velocity need to replace activated carbon in time when reducing.
Specifically, be cylinder, upper and lower ends among the low-concentration organic exhaust gas fluidization tower be conical tower body, institute State offered on tower body observation port and maintenance replacement port, tower body volume size according to pending gas flow number depending on, use Vertical vertical placement.
For ease of the clean gas discharge handled, the conical tower of the low-concentration organic exhaust gas fluidization tower topmost Exhaust fan 6 is installed at body.
The beneficial effects of the invention are as follows:Exhaust gas is entered by air inlet pipe 2-2 and gas distribution pipe 2-3 in fluidization regions 2, gas distribution pipe 2- 3 realize uniform gas distributions, and the air-flow in fluidisation cylinder 2-1 drives polyethylene fluidisation hollow ball 2-7 to generate fluidization, and to upstream It is dynamic, while polyethylene fluidisation hollow ball 2-7 is washed away, air-flow drives polyethylene fluidisation hollow ball 2-7 to enter fluidisation cylinder Peripheral region, and constantly move from top to bottom under gravity, while nutrient solution spray equipment 2-4 fluidizes sky to polyethylene Bulbus cordis sprays nutrient solution, and the microorganism that polyethylene is fluidized on hollow ball utilizes the pollution in the nutriment and exhaust gas in nutrient solution Object carries out self-reproduction, and the sludge and extra nutrient solution that polyethylene fluidisation hollow ball 2-7 comes off are flowed into muddy water area 1, are passed through Drain valve 1-1 is discharged into the sludge concentration tank outside tower, and the supernatant of sludge concentration tank is as nutrient solution, by pipeline and circulating pump again Into nutrient solution spray equipment 2-4, recycle;Exhaust gas ascends into adsorption and oxidation area 3, and the pollutant in exhaust gas, which is adsorbed, to be filled out Expect the microorganism adsorption in 3-1 and biochemical reaction occurs;Subsequently into dehumidifying area 4, the drop in gas is blocked gas herein It cuts down and;Then gas enters activated carbon adsorption area 5, and the substance and drop being mingled in gas are intercepted under absorption herein Come, so far exhaust gas is processed into clean gas, realizes qualified discharge.
Using above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property range is not limited to the content on specification, it is necessary to determine its technical scope according to right.

Claims (1)

1. a kind of low-concentration organic exhaust gas fluidization tower, it is characterised in that:It is followed successively by muddy water area (1), fluidization regions upwards from tower bottom (2), adsorption and oxidation area (3), dehumidifying area (4), activated carbon adsorption area (5) and exhaust fan (6);
The muddy water area (1) is positioned at the lowest part of entire tower, and the muddy water area (1) is designed to pyramidal structure, and collection comes from The muddy water on top, the bottom of pyramidal structure are equipped with drain valve (1-1), and drain valve (1-1) connects the sludge concentration tank outside tower;
The isolation board (1-2) of hole is provided between the muddy water area (1) and fluidization regions (2);
Fluidisation cylinder (2-1) is equipped in the fluidization regions (2), fluidisation cylinder (2-1) is cylindrical barrel structure, positioned at fluidization regions (2) center, the lower ending opening of fluidisation cylinder (2-1) are located at the bottom of fluidization regions, and upper end opening is located at the top of fluidization regions, fluidizes The lower part of cylinder (2-1) is equipped with air inlet pipe (2-2) and gas distribution pipe (2-3), and the gas distribution pipe (2-3) is arranged to concentric circles; The top for fluidizing cylinder (2-1) is equipped with nutrient solution spray equipment (2-4), and the nutrient solution spray equipment (2-4) connection is nutritious Liquid adding set (2-5), the nutrient solution adding device include nutrient tank and agitating device, and nutrient solution adding device passes through Pipeline connects nutrient solution circulating pump (2-6) with valve, and the nutrient solution spray equipment (2-4) is helical form spray equipment, is sprayed Mist, and mixing together between water mist is presented in the liquid of injection, does not stay dead angle;In fluidization regions hollow ball is fluidized full of polyethylene (2-7), the polyethylene fluidisation hollow ball have the advantages that unit volume biomass is big;
Supernatant of the nutrient solution for the sludge concentration tank outside low-concentration organic exhaust gas fluidization tower;
The adsorption and oxidation area (3) is positioned at the top of fluidization regions (2), and the adsorption and oxidation area (3) is equipped with adsorption stuffing (3- 1), the adsorption stuffing (3-1) is by concentration basin sludge, feces of livestock and poultry, sawdust and polyethylene hollow ball by volume 1:1:5: 10 are mixed;
The adsorption and oxidation area top is equipped with dehumidifying area (4), and dehumidifying area (4) is to be collected the big drop in gas, and It is allowed to return, reduces the moisture in gas, operation principle is that gas enters dehumidifying area (4), by a series of bends, from top Discharge, and water droplet when by racetrack portion, collides the surface in dehumidifying area, and in gravity due to the effect of its quality and kinetic energy It rebounds under effect;Dehumidifying area is provided with silk screen dehumidifier;
The dehumidifying area top is equipped with activated carbon adsorption area (5), setting activated carbon in the activated carbon adsorption area (5), living Property charcoal the advantages of requiring hole prosperity, large specific surface area, adsorption rate fast, anti-friction, resistance to flushing, by the long period Operation finds to replace in time when activated carbon becomes sticky, gas velocity reduces;
The low-concentration organic exhaust gas fluidization tower centre is cylindrical, upper and lower ends are conical tower body, is offered on tower body Observation port and maintenance replacement port, tower body volume size according to pending gas flow number depending on, using vertical vertical placement;
Clean gas for ease of having handled is discharged, at the conical tower body of the low-concentration organic exhaust gas fluidization tower topmost Exhaust fan (6) is installed.
CN201610057205.2A 2016-01-27 2016-01-27 A kind of low-concentration organic exhaust gas fluidization tower Active CN105727733B (en)

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CN107511069A (en) * 2017-09-22 2017-12-26 苏州仁益生物科技有限公司 A kind of efficient energy-saving emission-control equipment
CN108295631B (en) * 2018-01-18 2020-04-17 浙江大学 Method for treating organic waste gas by adopting airlift filler bioreactor
CN108298766A (en) * 2018-01-19 2018-07-20 常州大学 Sodium methyl mercaptide production wastewater treatment device
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CN110292854B (en) * 2019-07-03 2021-10-29 浙江工商大学 Device and method for catalytic degradation of VOCs (volatile organic compounds) by pulse plasma coupling double fluidized beds
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