A kind of device of flash processing volatile organic waste gas
Technical field
The present invention relates to the devices that a kind of flash handles a variety of volatile organic waste gas, belong to chemical industry and environment protection field.
Background technique
Currently, since haze weather seriously affects China's residents ' health, and the formation of haze and volatile organic pollutant
Discharge be tied in a hundred and one ways.The Treatment process that common are machine volatility exhaust gas can be divided mainly into two major classes: Yi Leishi
So-called non-destructive technique (absorption method), such method include active carbon adsorption (reference can be made to number of patent application is
The relevant technologies of 200710028462.4 patent disclosure), condensation method is (reference can be made to number of patent application is 201120148948.3
The relevant technologies of patent disclosure), solution absorption method (reference can be made to number of patent application be 201110341724.9 patent disclosure phase
Pass technology) etc. common technology, it is general to make volatile organic by physical conditions such as pressure, temperature in the certain technical process of change
Exhaust gas enrichment separation;Another kind of is so-called destructive technology (edman degradation Edman), mainly includes direct combustion method (reference can be made to patent application
Number for 200810039311.3 patent disclosure the relevant technologies) and photocatalytic method (reference can be made to number of patent application is
The relevant technologies of 201210112303.3 patent disclosure) etc. common technology, volatile organic exhaust gas is made by chemical technology
It is converted into CO2, water and the lesser inorganic matter of nontoxic or toxicity.Various methods handle the process conditions of volatile organic exhaust gas and want
It asks with different application range and advantage and disadvantage.For example, there is investment to the volatile organic exhaust-gas treatment of low concentration in condensation process
Greatly, the high disadvantage of operating cost is generally only applicable to the volatile organic waste gas pollution control and treatment of high concentration, small air quantity;Absorption method for
The volatile organic exhaust gas of low concentration has good treatment effect, but needs continually to regenerate adsorbent;Environmental protection neck
Domain handles volatile organic compounds frequently with the mode of burning or catalysis burning, however is catalyzed burning and generally requires higher burning
Temperature and reaction time cause energy consumption larger, and the requirement to consersion unit is also higher;Light-catalysed method is due to treating capacity
Small, processing speed is lower to be constantly in the laboratory research stage.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of efficient, energy-saving and environmental protection and the simple flash processing of structure is waved
The device of hair property organic exhaust gas.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows:
A kind of device of flash processing volatile organic waste gas, key technology are: it includes by appendix sequence
The pretreating device, microwave reactor and absorption plant for being used to remove soda acid and dedusting of linking, in the pretreating device
Appendix between microwave reactor is equipped with air pump, volatile organic matter on-line computing model and gas flowmeter;
The microwave reactor includes cylinder combination and at least one set of magnetron and waveguide that connection is combined with cylinder
Combination;
The cylinder combination includes inner cylinder and the outer cylinder being firmly connected with it, and the inner cylinder is wave transparent ceramic tube, described
Outer cylinder is the stainless steel cylinder that inner wall polishes smooth;It is connected to by waveguide with outer cylinder after the magnetron and waveguide connection;Institute
It states and is equipped with packing layer in inner cylinder, the alumina silicate heat-preservation cotton for guaranteeing cavity temperature is equipped between the inner barrel and outer barrel;It is described
The upper and lower ends of outer cylinder are equipped with the aluminium film for preventing microwave leakage;
The appendix come out from volatile organic matter on-line computing model is connected to the lower part air inlet of the inner cylinder, described interior
The top gas outlet of cylinder is connected to the air inlet of absorption plant.
The inner cylinder top is fixedly connected by compact heap and positioning seat with the cover assembly of outer cylinder, the outer cylinder and inner cylinder
The sealed circle in lower part junction and bulkhead seal, the bottom of the inner cylinder is equipped with lower cover component and the gear for support packing layer
Plate offers multiple circular holes on the baffle;The lower part of the baffle is equipped with lower shell ring, which is equipped with flange.
The outer cylinder and waveguide junction are by can prevent the mica sheet that dust enters magnetron in cavity from closing, magnetic control
Pipe is at least 20cm with a distance from microwave cavity edge, and the waveguide uses fine copper or silver-plated waveguide.
The pretreating device includes wet type or Dry absorption wash mill and cyclone dust collectors or sack cleaner.
The volatile organic matter on-line computing model is exploded using TVOCs on-line monitoring equipment or specific volatile organic matter
Prior-warning device;VOCs the or TVOCs on-line monitoring equipment monitoring range is in 0-106ppm;Specific VOCs early warning explosion equipment root
According to specific VOCs type set upper explosion limit and lower limit.
The microwave reactor uses 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, the microwave reactor
Using single tube or multitube combination, catalysis material of energizing is added in the inner cylinder.The catalysis material of energizing of inside addition should expire
Foot heats up rapidly under microwave field, stable structure, the strong requirement of catalytic capability.
The absorption plant uses liquid absorption tower or solid bed adsorber, is equipped on the pipeline before the absorption plant
Tubulation or fin can be used in condensation or heat-exchanger rig, the condensing unit.Heat-exchanger rig can be used for before gas enters microwave reactor
Preheating.
The air inlet-outlet pipe of the microwave reactor uses corrosion-and high-temp-resistant material.
The beneficial effects of adopting the technical scheme are that
1, the present invention is provided with inner barrel and outer barrel composite structure, and is provided with magnetron and waveguide, and work Shi Qili
It is energized the method for catalysis with microwave flash, high concentration volatile organic exhaust gas can not only be handled, can also be utilized micro-
The catalytic of wave and the adsorptivity of catalyst handle low concentration under the conditions of organic gas temperature is far below catalysis ignition temperature
Volatile organic compounds, have the characteristics that purification efficiency is high, low energy consumption, without secondary pollution;
2, present apparatus overall structure is fairly simple, and treatment effect is preferably and efficiency is higher.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention;
Fig. 2 is the schematic diagram of microwave reactor of the present invention;
Fig. 3 is the schematic diagram of positioning seat;
Fig. 4 is positioning seat schematic top plan view;
Fig. 5 is the schematic diagram of lower cover component part;
Fig. 6 is the schematic diagram of baffle;
Fig. 7 is the position enlarged diagram of the portion A circular hole on baffle;
Fig. 8 is the enlarged diagram in the portion B in Fig. 2;
Fig. 9 is the enlarged diagram in the portion C in Fig. 2;
In figure: 1- pretreating device, 2- air pump, 3- volatile organic matter on-line computing model, 4- gas flowmeter, 5- microwave
Reactor, 6- absorption plant, the combination of 7- cylinder, 8- magnetron, 9- waveguide, 10- lower cover component, 11- O-ring, 12- partition,
13- screw, 14- packing layer, 15- aluminium film, 16- alumina silicate heat-preservation cotton, 17- inner cylinder, 18- compact heap, 19- represent positioning seat, 20-
Fixing bolt, 21- fixture nut, 22- cover assembly, 23- baffle, the upper shell ring of 24-, 25- terminal pad, 26- support plate, under 27-
Shell ring, 28- flange, 29- sealing plate, 30- outer cylinder.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.
Referring to attached drawing 1- attached drawing 9, the present invention includes being connected to by air delivering pipeline tandem for removing soda acid and removing
Pretreating device 1, microwave reactor 5 and the absorption plant 6 of dirt, between the pretreating device 1 and microwave reactor 5
Air pump 2, volatile organic matter on-line computing model 3 and gas flowmeter 4 are connected on appendix;
The microwave reactor includes cylinder combination 7 and at least one set of magnetron 8 and the waveguide that 7 connections are combined with cylinder
Pipe 9 combines;
The cylinder combination 7 includes inner cylinder 17 and the outer cylinder 30 being firmly connected with it, and inner cylinder 17 and outer cylinder 30 are coaxially set
It sets, the inner cylinder 17 is wave transparent ceramic tube, and the outer cylinder 30 is the stainless steel cylinder that inner wall polishes smooth;8 He of magnetron
Waveguide 9 is connected to, and is then connected to by waveguide 9 with outer cylinder 30;It is equipped with packing layer 14 in the inner cylinder 17, the inner cylinder 17 and outer
It is equipped with the alumina silicate for guaranteeing cavity temperature between cylinder 30 and keeps the temperature cotton material, which can be used alumina silicate heat-preservation cotton 16;Institute
The upper/lower terminal for stating outer cylinder 30 is equipped with the aluminium film 15 for the outsourcing for preventing microwave leakage.
The appendix come out from volatile organic matter on-line computing model 3 is connected to the lower part air inlet of the inner cylinder 17, institute
The top gas outlet for stating inner cylinder 17 is connected to the air inlet of absorption plant 6.
Referring to 2~attached drawing of attached drawing 9,17 top of inner cylinder passes through the cover assembly of compact heap 18 and positioning seat 19 and outer cylinder
22 are fixedly connected, and the sealed circle 11 in lower part junction and partition 12 of the outer cylinder 30 and inner cylinder 17 are tightly connected, the inner cylinder
17 bottom is equipped with lower cover component 10 and the baffle 23 for support packing layer, offers multiple circular holes on the baffle 23;It is described
Lower cover component 10 includes sealing plate 29 and the lower shell ring 27 set on the lower part of the baffle 23, which is equipped with flange
28,23 top of baffle is connected with sealing plate 29 by support plate 26.The positioning seat 19 includes upper shell ring 24 and is set to upper
The terminal pad 25 of 24 lower outside of shell ring.
The outer cylinder 30 and 9 junction of waveguide by can prevent the mica sheet that dust enters magnetron 8 in cavity from closing,
Magnetron 8 is at least 20cm with a distance from microwave cavity (i.e. the cavity of outer cylinder 30 and the formation of inner cylinder 17) edge, because of cavity meeting
It heats up as experiment is carried out, keeps certain distance, avoid high temperature can be with the use of stabilized magnetron.The waveguide is using pure
Copper or silver-plated waveguide (or being excitation cavity).
The pretreating device 1 includes wet type or Dry absorption wash mill and cyclone dust collectors or sack cleaner,
Wherein wet type or Dry absorption wash mill are used to deacidify, and cyclone dust collectors or sack cleaner are used for dedusting.It is according to organic
The characteristics of exhaust gas, gets rid of acid alkaline gas and dust etc., prevents the damage to equipment.
The volatile organic matter on-line computing model 3 is quick-fried using TVOCs on-line monitoring equipment or specific volatile organic matter
Fried prior-warning device, such as benzene-specific volatile organic matter early warning explosion device and acetone-specific volatile organic matter early warning explosion device
Equal similar products.The TVOC gas of Qingdao Loobo Hongye Environmental Protection Technology Co., Ltd. can be used in volatile organic matter on-line computing model 3
The products such as bulk detector (digital display remote control type).VOCs the or TVOCs on-line monitoring equipment monitoring range is in 0-106ppm;It is specific
VOCs early warning explosion equipment is according to specific VOCs type set upper explosion limit and lower limit.
The microwave reactor uses 915MHz or 2.45GHz, 0-400 KW microwave generating apparatus, the microwave reactor
5 use single tube or multitube combination, add catalysis material of energizing in the inner cylinder 17.Common single magnetic control tube power is
0.5-1.5KW is since by power limit, single tube is generally used for household microwave oven, the small-powers instrument such as microwave dissolver;
Multitube is chiefly used in industrial HIGH-POWERED MICROWAVES furnace.Multimode (for single magnetron single mode, multiple magnetrons are multimode) microwave when use
The strong wave substance of inhaling of inside reactor addition is realized and is decomposed to the quick catalysis of organic volatile as material of energizing.
The absorption plant uses liquid absorption tower or solid bed adsorber, is selected according to the difference of organic matter physico-chemical property
Use is selected, condensation or heat-exchanger rig, the condensing unit are equipped on the pipeline before the absorption plant 6, between microwave reactor 5
Tubulation, fin etc. can be used.Heat-exchanger rig can be used for preheating before gas enters microwave reactor.The microwave reactor 5 into
Exhaust pipe uses corrosion-and high-temp-resistant material.
Referring to attached drawing 1, the course of work of the invention are as follows: organic exhaust gas first passes through pretreating device except soda acid and dedusting, place
Exhaust gas after reason is passed through microwave reactor and carries out catalytic pyrolysis reaction, and microwave special-purpose catalyst is housed in reactor, realizes to having
The quick catalysis of machine volatile matter decomposes;Then the gas come out enters absorption plant, according to the difference of organic matter physico-chemical property, adopts
With solid-state or liquid absorbent device, further removing some solid impurities can reach zero-emission.
The present apparatus is verified below by several specific embodiments can generate good effect really.
Embodiment 1
Known Hebei pharmacy corporation reaches 15000ppm or so in the content of acetone that certain workshop section discharges.It is continuous in order to provide
Stable acetone exhaust gas, using acetone soln heating volatilization, obtaining concentration by control acetone volatile quantity is 14400 ppm for we
Simulation acetone exhaust gas, control microwave power in 8kW, gas flow rate 6L/min.After being handled using apparatus of the present invention, through surveying
The removal rate for determining acetone is 98.3%, and outlet has reached national emission standard.
Embodiment 2
Known Hebei pharmacy corporation reaches 7000ppm or so in the ethyl acetate content that certain workshop section discharges.In order to provide
The ethyl acetate exhaust gas of continuous-stable, we are obtained using ethyl acetate solution heating volatilization by controlling ethyl acetate volatile quantity
The simulation ethyl acetate exhaust gas that concentration is 6800 ppm is obtained, controls microwave power in 7kW, gas flow rate 6L/min.Using this hair
After bright device is handled, the removal rate of ethyl acetate is 97.4% after measured, and outlet reaches national emission standard.
Embodiment 3
Anaerobism workshop section of the known Hebei pharmacy corporation in the wastewater treatment stage generates a large amount of organic volatiles in the top of pond
Property gas, TVOC content reaches 3000ppm after measured.In order to provide the volatile organic exhaust gas of continuous-stable, we use third
Ketone, ethyl acetate and toluene solution volatilize according to 1:1:1 Hybrid Heating, and obtaining concentration by control volatile quantity is 3000 ppm's
Volatile organic exhaust gas is simulated, controls microwave power in 5kW, gas flow rate 4L/min.After being handled using apparatus of the present invention,
The removal rate of TVOCs is 98.5% after measured, and outlet reaches national emission standard.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.