CN201735310U - Laboratory exhaust gas processing device - Google Patents
Laboratory exhaust gas processing device Download PDFInfo
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- CN201735310U CN201735310U CN2010201065034U CN201020106503U CN201735310U CN 201735310 U CN201735310 U CN 201735310U CN 2010201065034 U CN2010201065034 U CN 2010201065034U CN 201020106503 U CN201020106503 U CN 201020106503U CN 201735310 U CN201735310 U CN 201735310U
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Abstract
The utility model relates to a novel exhaust gas processing device which particularly discloses a laboratory exhaust gas processing device. The device comprises an exhaust gas washing treatment device and a waste water processing unit, wherein the exhaust gas washing treatment unit is a centrifugal scrubber, and a gas guidance plate and a rotational flow plate are arranged in the exhaust gas washing treatment unit; the waste water processing unit is composed of a middle pool, a catalytic internal electrolysis pool and a biosorption pool, wherein the middle pool, the catalytic internal electrolysis pool and the biosorption pool are successively connected from front to back. The utility model can be widely applied in treating various types of laboratory exhaust gas.
Description
Technical field
The utility model relates to a kind of laboratory exhaust gas to be handled, and is specifically related to a kind of laboratory exhaust gas treating apparatus.
Background technology
Since in the experimentation, the material composition complexity, and of a great variety, toxic emission is also irregular, causes coming treatment of laboratory waste gas difficulty very big with conventional technology; And in laboratory waste water is built,, must consider the mutual coordination of surrounding enviroment as the R﹠D institution of precision.If the waste gas that produces in the experimentation is not handled, can directly work the mischief to surrounding air.These harmful exhausts a bit can directly be drained in the R﹠D institution again, and experimenter's health is caused huge injury.
At present, in Laboratory Waste Water Treatment, the main method of employing has Dry Adsorption Process, water spray process, nano-photo catalytic method, low temperature plasma method.These methods in use all exist certain shortcoming.Can well adsorb organic exhaust gas such as Dry Adsorption Process, but very low to the sour gas treatment effeciency, and adsorb saturated easily.If adsorption plate that these absorption are saturated or activated carbon grain are not handled, can cause useless admittedly the pollution.The water spray column also has the good treatment effect to sour gas treatment effeciency height to metallic dust, but very low to the treatment effeciency of organic exhaust gas, and the spray column volume is big, and all there is very big requirement in the load-bearing and the space of building.Handle in the waste gas in the nano-photo catalytic method, can the direct sunshine catalytic decomposition to organic exhaust gas.But in use, these catalysis materials are for a long time under the effect of blowing of the wind of high wind speed, these catalyst loss rates are very high, cause treatment effeciency more and more lower, and chlorion in the waste gas and sulfate ion all have intoxication to titanium dioxide, and under experiment condition, these acids all are common compounds.The low-temperature plasma physical efficiency is decomposed organic matter by electric shock, and metallic dust is played the good treatment effect by Electrostatic Absorption, but chlorion too much in the laboratory exhaust gas can be very fast to equipment corrosion, simultaneously in the low temperature plasma method is used, exist the battery lead plate problem of aging, these have all restricted the use of low-temperature plasma method.In the selection of these methods, a lot of producers are according to breadboard character decision treatment of laboratory treatment of waste gas method, use Dry Adsorption Process such as the Organic Experiment chamber, and spray process is used in the Inorganic Experiment chamber.But in the actual experiment, the concentrated sulfuric acid often need be used in the Organic Experiment chamber, and nitric acid and hydrochloric acid are as catalyst.In the Inorganic Experiment chamber, often need use a lot of organic polymer materials as complexing agent.Therefore traditional sorting technique is effective processing of very difficult real use waste gas.In the experiment toxic emission, general exhausted air quantity is big, and pollutant levels are lower.Treatment facility generally is placed on the top layer or the balcony of building, so in laboratory exhaust gas is handled, the space and the load-bearing of necessary consideration equipment.
Summary of the invention
For solving the existing existing above-mentioned defective of laboratory exhaust gas processing method, the purpose of this utility model provides a kind of laboratory exhaust gas treating apparatus.
Said apparatus can be used for comprising organic chemical engineering experiment chamber, pharmacy laboratory, Disease Control and Prevention Center laboratory, medical institutions laboratory, the exhaust-gas treatment of laboratory mechanisms such as medicine inspecting institute laboratory.Also can be used as drugs cabinet exhaust-gas treatment.
The purpose of this utility model is achieved through the following technical solutions:
A kind of laboratory exhaust gas treating apparatus, comprise electric-control system, waste gas washing adsorption treatment unit and washes processing unit, it is characterized in that: described waste gas washing adsorption treatment unit is a centrifuge washing device, this bottom of device is provided with exhaust gas inlet, the top is provided with washings spray equipment and waste gas outlet, and the waste gas outlet place is provided with sterilizing unit; Treatment unit for waste water comprises the neutralization pond that connects successively, interior electrolytic cell and biological adsorption tank; The cleaning solution outlet of described centrifuge washing device is communicated with described neutralization pond, and biological adsorption tank is connected with the washings spray equipment by the reuse pipeline.Do not need aerating system in electrolytic cell and the biological adsorption tank in described.
As preferably, described centrifuge washing device is made up of urceolus and rotatable inner core, and described inner core is provided with aeroscopic plate and eddy flow plate.This kind structure is arranged so that at centrifuge in rotating at a high speed, can not form uniform eddy current or make waste gas directly be pressed against the centre position discharging of centrifuge because density is little.
As preferably, described neutralization pond and biological adsorption tank are equipped with the automatic control of liquid level system; The fresh water JUMPS Automated Supplemental System that is provided with dissolving salinity instrument in the described biological tank and controls by the salinity value.These are provided with the effective liquid level that can guarantee wash mill and the pH value of washings.
As preferably, the sterilizing unit at described waste gas outlet place is a ultraviolet sterilization apparatus.Because through centrifugal action, the moisture content that contains in the waste gas is few in wash mill for waste gas, ultraviolet optical efficiency can be improved.
When using the utility model to carry out exhaust-gas treatment, preferred following technological parameter:
Add in the used washings of wash mill and contain microorganism and powdered biological adsorption stuffing.Described fleut is preferably active carbon or similar organic class adsorbent (as thioamide analog fiber adsorbing substance or organosilicon adsorbent) is formed.More preferably, described powdered biological adsorption stuffing is an active carbon powder, and granularity is below 240 orders.
As preferably, described in electrolytic cell be electrolytic cell in the iron carbon.Inner electrolytic material is preferably obtained by following method: be with based on iron carbon, be aided with calcium carbonate, aluminium powder, phosphoric acid magnesium salts, one or more auxiliary composition mixer mill powderings such as copper powder, titanium dioxide powder, granularity is below 200 orders, add crosslinking agent (preferred polystyrene) then, make the circular granular that granularity is 0.1～0.63mm.The consumption of crosslinking agent is preferably 3～5% of inner electrolytic material gross weight.Interior electrolysis composition mass ratio: iron 49%; Carbon: 35%; Calcium carbonate: 4%; Aluminium powder: 0.5%; Phosphoric acid magnesium salts: 1%; Copper powder: 0.2%; Titanium dioxide: 0.3%.
As preferably, the used filler of described biological adsorption tank is the mixture of porous cellulose ether and active carbon.
It is as follows to utilize the treating apparatus of the utility model laboratory exhaust gas to handle the basic principle of waste gas:
Laboratory exhaust gas is at first passed through centrifugal force, fully mix with washings, for preventing that centrifuge is in rotating at a high speed, layering appears owing to the density of washings and waste gas is different, eddy flow plate and aeroscopic plate are set in the centrifuge inner core, make waste gas still can discharge by spiral, and fully mix with washings at centrifugal action.In mixed process, the harmful substance of Yi Rong and washings is absorbed by water, and partial organic substances is adsorbed by biology, is adsorbed onto in the waste water fast.
In washing process, the wastewater pH in the centrifuge can change, and absorption also can be saturated, and salinity also can constantly increase.Therefore in design, the wastewater neutralizer that is communicated with is arranged, regulate the acid-base value of waste water by the pH probe automatically with centrifuge.
In the waste gas wash mill, also be provided with the automatic replenishment control of liquid level, the automatic replenishment control of liquid level system can also can be controlled by pressure transmitter by the control of float switch device, also can control by infrared inductor.The direct discharging of waste water of waste gas wash mill is regenerated to washings in treatment unit for waste water to treatment unit for waste water.The biological absorption powder that contains a large amount of microorganisms and suspension in these recycled waters can effectively be adsorbed organic matter in the waste gas.
Device of the present utility model compared with prior art has following beneficial effect:
(1) utilize this utility model device to handle automatically at different laboratory exhaust gas, and can not occur in the present operation technique normal occur can only the good treatment sour gas or the problem of organic exhaust gas.Laboratory exhaust gas is through the dilution of airduct, and general concentration is lower, but the composition complexity, what the different periods discharged might be sour gas, also might be organic class waste gas, also might be reducibility gas, such as hydrogen sulfide, amine, even might be metal waste gas or powder.The utility model can be handled these waste gas very widely, by washing, the acid waste gas that is soluble in weak base is disposed, and for metallic dust, effectively separates by centrifugal force.In the utility model, contain pulverous biologic packing material in the washing agent, the absorption organic exhaust gas, these biologic packing materials that adsorbing organic exhaust gas separate under action of centrifugal force and enter in the biological adsorption tank, again be suspended in the water, carry out biochemical reaction, oxidation operation is become carbon dioxide.For the organic matter of difficult for biological degradation, before carrying out biochemical system, carry out iron carbon catalyzed internal electrocatalysis, can improve organic biodegradability, make the utility model method non-secondary pollution.
(2) traditional spray process cannot purify waste water, can produce new pollution-waste water.In traditional Dry Adsorption Process, can produce useless admittedly the pollution.Use the utility model device to carry out exhaust-gas treatment, be further used as the waste gas washings after the purification of waste water and recycle, guarantee non-secondary pollution.
(3) at the treatment unit for waste water of the utility model device, need not aeration, utilize a large amount of oxygen that dissolve in the waste gas as oxygen source.
(4) biological adsorption tank of the present utility model mainly uses the cellulose ether filler, and it both can play suction-operated, can play the effect that COD falls in biology again.When COD concentration was higher, absorption property can adsorb organic matter fast, makes wastewater to reach standard.When COD concentration was low, biodegradation was main, adsorbed organic matter is slowly decomposed, as " ruminating " that cattle eat grass.The cellulose ether that uses at the utility model has good affinity interaction to the ether of biology, makes biomembrane very thick, can play simultaneously aerobic, anoxic, the effect of anaerobism.Also increase the active carbon or the biological adsorption stuffing of similar low-density that suspend in the biological adsorption step, can accelerate waste gas and be adsorbed at short notice, also can improve biological adsorption tank biological treatment effect.
(5) the utility model is mentioned emission-control equipment, and is simple in structure.By the space structure of each reaction tank rationally is set, can be so that handle a 3000m
3The device of the waste gas of/h, cumulative volume is less than 1m
3, weight is less than 1 ton.
(6) use the utility model to handle waste gas, because waste gas in discharge process, has passed through a centrifugal process, the water droplet in the waste gas is brought to inwall again and flows in the wash mill, and water content is little in the waste gas, and is little to follow-up equipment corrosion.
Description of drawings
Fig. 1 is the schematic diagram that the utility model device each several part is formed.
Fig. 2 is the contour structures schematic diagram of a kind of preferred laboratory exhaust gas treating apparatus of the utility model.
Fig. 3 is the floor plan of device each processing unit shown in Figure 2.
Fig. 4 is the floor map of the utility model laboratory exhaust gas centrifuge washing device.
Wherein main Reference numeral is as follows:
The 1-air inlet pipe
2-washs centrifuge
The 3-escape pipe
The 4-sprayer
5-backflow injection spray pipe
6-washs outlet pipe
The 7-neutralization pond
The 8-pH control system
9-catalyzed internal electrocatalysis pond
The biological adsorption tank of 10-
The 11-conductivity gauge
The 12-drainpipe
The 13-running water pipe
The 14-access door
The 15-reflux pump
The 16-uviol lamp
The 21-back shaft
22-centrifuge inner core
23-centrifuge urceolus
The 24-wind deflector
25-eddy flow plate.
The specific embodiment
Below be the utility model preferred embodiment, understand the utility model to help further, but embodiment of the present utility model be not limited thereto.
Fig. 1 is a kind of schematic diagram of preferred the utility model device each several part.As shown in the figure, when using this device to carry out wastewater treatment, laboratory exhaust gas is extracted into rotary scrubber 2 by air inlet pipe 1, in rotary scrubber 2, the washings that contain microorganism and suspended biological filler that process is sprayed by sprayer 4 adsorb and wash, make waste gas to be purified, these are discharged by discharge pipe 3 after 16 sterilizations of ultraviolet device through the gas that purifies.Waste water after the washing arrives neutralization pond 7 through washing outlet pipe 6 by flow by gravity, is provided with pH control system 8 in neutralization pond 7, can adjust the pH value automatically.The water of neutralization pond is through flowing automatically to catalyzed internal electrocatalysis pond 9, and the organic matter of some difficult degradations is decomposed.Flow into biological adsorption tank 10 by reacted water in the catalyzed internal electrocatalysis pond 9, carry out biochemical treatment.Be provided with conductivity gauge 11 in the biological adsorption tank 10, after the salinity of the waste water in the biological adsorption tank 10 arrives certain value, from discharge outlet 12, discharge automatically.And by replenishing in the running water pipe 13.The water of biological adsorption tank 10 is got in the sprayer 4 by backflow injection spray pipe 5 through reflux pump 15, as washings, washs again and adsorbs waste gas.
Fig. 2 shows a kind of concrete profile of said apparatus and structure.This device is set to a square structure, and floor space is little, can be placed in the laboratory, also can be placed on the roof that has tent.As shown in the figure, this device middle part is provided with the rotary scrubber 2 of a circle, adopts PLC to control automatically.These washer three limits are surrounded by water, wherein on one side as access path, are positioned at access door 14 the insides.Waste gas is come in from left side air inlet pipe 1, discharges from top blast pipe 3.Centrifuge washing water passes through neutralization pond 7 successively, catalyzed internal electrocatalysis pond 9 and biological adsorption tank 10, and recirculation is got in the rotary scrubber 2 through sprayer 4 through reflux pump 15 and backflow injection spray pipe 5.
The horizontal layout of each processing unit as shown in Figure 3 in the device.The centre is a centrifugal scrubber 2. Neutralization pond 7,9 front and back, catalyzed internal electrocatalysis pond are distinguished the position in the left side, biological adsorption tank 10, be positioned at the right side of living centrifugal scrubber 2, neutralization pond 7 is communicated with collecting-tank washing centrifuge 2, and catalytic electrolysis pond 9 is communicated with neutralization pond 7, and biological adsorption tank 10 is communicated with catalytic electrolysis pond 9.The liquid level difference of each pond body that the water of Chi Tizhong mainly causes when drawing water by reflux pump 15 and form circulation.In cyclic process, salinity accumulation in the waste water, make the purification efficiency of waste gas reduce, at this moment by the electrical conductivity in conductivity gauge 11 (by the salinity in the electrical conductivity reaction waste) the mensuration water, automatically by a part of highrank fuel salinity water of drainpipe 12 dischargings, replenish fresh running water and pass through running water pipe 13.
Fig. 4 is the structural representation of the key component centrifugal scrubber 2 of this equipment.The primary structure of centrifugal scrubber 2 comprises back shaft 21, centrifuge inner core 22, centrifuge urceolus 23, aeroscopic plate 24 and eddy flow plate 25.In addition, sprayer 4 is positioned at the central upper portion position of centrifuge inner core 22, and escape pipe 3 is positioned at the top of centrifugal scrubber 2, and is provided with the gas that 16 pairs of uviol lamps enter escape pipe 3 and carries out sterilization.The central shaft of centrifugal scrubber 2 overlaps with the central shaft of entire equipment, can avoid like this producing angular force in the rotation at a high speed.
When utilizing device of the present utility model to handle waste gas, as Fig. 3 and Fig. 4, waste water and gas at first enters centrifugal scrubber 2 by air inlet pipe 1, and under aeroscopic plate 24 effects, air-flow changes the water counter current contacting of direction and spraying.After centrifugal scrubber 2 starts, centrifuge inner core 22 beginning fast rotational, because the effect of eddy flow plate 25, water fully mixes with gas, and can not taking place, aqueous vapor do not separate, in high-speed stirred, the liquid-film resistance of aqueous vapor fades away, and solubilized and absorbed portion are adsorbed fast and be dissolved in the water in the waste gas.Rising along with waste gas, because density contrast, waste gas is released after uviol lamp 16 sterilizations from top escape pipe 3, and is flow to again in the centrifugal scrubber 2 owing to centrifugal force by the water droplet that waste gas is taken out of, make that the gas moisture content of discharging is low, little to follow-up equipment corrosions such as blower fan.Centrifugal scrubber 2 washed water can flow automatically in the continuous neutralization pond 7 along with the rising of liquid level, by pH control system 8, adjust pH in neutrality or faintly acid by adding alkali.The water outlet of neutralization pond 7 is through catalyzed internal electrocatalysis pond 9, in catalyzed internal electrocatalysis pond 9, form countless galvanic cells, make the difficult macromolecule organic that decomposes can resolve into small organic molecule, these organic matters carry out biochemical treatment at biological adsorption tank 10, thereby make waste water also be purified.Waste water recycling after the purification is washings, constitutes the circulation of a sealing.
Application Example 1
1, target waste gas
Hospital's waste gas is mainly volatility formaldehyde, and exhausted air quantity is 2000m
3/ h, content of formaldehyde are 8～50mg/m
3, contain part thimerosal volatilization gas, such as ethanol, hydrogen peroxide etc.
2, technological parameter
Use device as shown in Figures 2 and 3, concrete technological parameter is as follows:
(1) centrifuge speed 1200r.p.m
(2) motor power 2.2kw
(3) centrifugal scrubber: diameter * height=400mm * 800mm
(4) neutralization pond 7, because in this waste gas, acid content is few, mainly are that regulating reservoir is used..
(5) interior electrolytic cell 9:
Electrolysis material: be by calcium carbonate, iron powder, carbon dust, the phosphoric acid magnesium salts, copper powder and titanium dioxide powder are formed, and wherein the ratio of each component is respectively: 2%, 60%, 33%, 4.4%, 0.3%, 0.3%.
The preparation method of electrolysis material: with calcium carbonate, iron powder, carbon dust, the phosphoric acid magnesium salts, copper powder, titanium dioxide powder is pulverize in proportion, granularity is below 200 orders, and the polystyrene that adds 4% electrolysis material weight is then made the circular granular that granularity is 0.1～0.63mm as crosslinking agent.
Electrolytic condition: under acid condition, cell reaction takes place, generate countless galvanic cells, make organic matter be decomposed.
(6) biological adsorption tank 10:
Filler: the active carbon powder of porous cellulose ether and suspension.
(7) uviol lamp 16: control by delay switch.
3, the effect of waste gas and draining processing:
From testing result as can be seen, formaldehyde treated rate height, treatment effeciency are more than 80%, and hydrogen peroxide and Ethanol Treatment efficient are higher than 95%.
Application Example 2
1, target waste gas
Handle the acid waste gas of waste gas for the discharging of drugs cabinet, the inside contains perchloric acid, hydrogen chloride, sulfuric acid, nitric acid and composition thereof chloroazotic acid.Exhausted air quantity is at 450m
3/ h～800m
3/ h.
2, technological parameter
Use device as shown in Figures 2 and 3, concrete technological parameter is as follows:
(1) centrifuge speed 1350r.m.p..
(2) motor power 0.75kw
(3) centrifugal scrubber: diameter * height=250mm * 700mm
(4) neutralization pond 7, and pH is adjusted to 8
(5) interior electrolytic cell 9:
Electrolysis material: be by calcium carbonate, iron powder, carbon dust is formed, and wherein the ratio of each component is respectively: 25%, 40%, 35%,
(6) biological adsorption tank 10:
Filler: the active carbon powder of suspension, can save the cellulose ether filler.
3, the effect of exhaust-gas treatment:
For acid waste gas treatment effeciency more than 85% is arranged, can well remove the nitrogen oxide in the acid gas.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (4)
1. laboratory exhaust gas treating apparatus, comprise electric-control system, exhaust-gas treatment unit and washes processing unit is characterized in that: described exhaust-gas treatment unit is a centrifuge washing device, this bottom of device is provided with exhaust gas inlet, and the top is provided with washings spray equipment and waste gas outlet; Described washes processing unit comprises the neutralization pond that connects successively, interior electrolytic cell and biological adsorption tank; The cleaning solution outlet of described centrifuge washing device is communicated with described neutralization pond, and biological adsorption tank is connected with the washings spray equipment by the reuse pipeline.
2. Laboratory Waste Water Treatment device according to claim 1 is characterized in that: described centrifuge washing device is made up of urceolus and rotatable inner core, and described inner core is provided with the flow direction of aeroscopic plate and eddy flow plate control gas.
3. Laboratory Waste Water Treatment device according to claim 1 is characterized in that: described neutralization pond and biological adsorption tank are equipped with the automatic control of liquid level system; Be provided with the device of analyzing salinity and the fresh water JUMPS Automated Supplemental System of controlling by the salinity value in the described biological tank.
4. Laboratory Waste Water Treatment device according to claim 1 is characterized in that: also be provided with the sterilization pond after the described biological adsorption tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201065034U CN201735310U (en) | 2010-01-29 | 2010-01-29 | Laboratory exhaust gas processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201065034U CN201735310U (en) | 2010-01-29 | 2010-01-29 | Laboratory exhaust gas processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201735310U true CN201735310U (en) | 2011-02-09 |
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ID=43550591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201065034U Expired - Fee Related CN201735310U (en) | 2010-01-29 | 2010-01-29 | Laboratory exhaust gas processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201735310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780372B (en) * | 2010-01-29 | 2012-09-19 | 华南理工大学 | Method and device for processing laboratory exhaust gas |
| CN104624042A (en) * | 2015-02-14 | 2015-05-20 | 石家庄华宇新锐科技有限公司 | Laboratory waste gas purification treatment equipment |
-
2010
- 2010-01-29 CN CN2010201065034U patent/CN201735310U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780372B (en) * | 2010-01-29 | 2012-09-19 | 华南理工大学 | Method and device for processing laboratory exhaust gas |
| CN104624042A (en) * | 2015-02-14 | 2015-05-20 | 石家庄华宇新锐科技有限公司 | Laboratory waste gas purification treatment equipment |
| CN104624042B (en) * | 2015-02-14 | 2016-08-31 | 石家庄华宇新锐科技有限公司 | Laboratory exhaust gas purified treatment is equipped |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20120129 |