CN105477976A - Ventilation cabinet organic waste gas purification device and activated carbon regeneration method and circuit controller - Google Patents
Ventilation cabinet organic waste gas purification device and activated carbon regeneration method and circuit controller Download PDFInfo
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- CN105477976A CN105477976A CN201510959611.3A CN201510959611A CN105477976A CN 105477976 A CN105477976 A CN 105477976A CN 201510959611 A CN201510959611 A CN 201510959611A CN 105477976 A CN105477976 A CN 105477976A
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- active carbon
- exhaust fan
- vent cabinet
- air
- control module
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000000746 purification Methods 0.000 title claims abstract description 74
- 239000007789 gas Substances 0.000 title claims abstract description 49
- 238000011069 regeneration method Methods 0.000 title claims abstract description 23
- 238000009423 ventilation Methods 0.000 title abstract 5
- 239000010815 organic waste Substances 0.000 title abstract 4
- 239000000945 filler Substances 0.000 claims abstract description 73
- 239000002699 waste material Substances 0.000 claims abstract description 58
- 239000002912 waste gas Substances 0.000 claims abstract description 34
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 89
- 238000000034 method Methods 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 29
- 238000004140 cleaning Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 7
- 230000005144 thermotropism Effects 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 230000001351 cycling effect Effects 0.000 claims description 3
- 230000003252 repetitive effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000008929 regeneration Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 15
- 230000008859 change Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
- B01J20/3466—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase with steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a ventilation cabinet organic waste gas purification device and belongs to the technical field of waste gas purification. The ventilation cabinet organic waste gas purification device comprises an outer exhaust pipe and a purification tank. The outer exhaust pipe is communicated with the upper portion of the purification tank. A reducing five-way pipe is correspondingly arranged above the purification tank. Four lower connecting pipes of the reducing five-way pipe are each correspondingly connected with an exhaust down pipe. The lower portion of the purification tank is fixedly connected with a waste liquid collection hopper. The purification tank and the waste liquid collection hopper are separated through a porous bearing plate. Activated carbon filler is stacked into the purification tank. The lower ends of the exhaust down pipes are communicated with a wind collection zone on the inner side of the waste liquid collection hopper. A steam distribution pipe is vertically installed on the porous bearing plate. The wind collection zone inside the waste liquid collection hopper is communicated with a hot-blast air inlet pipe. An air inlet of the hot-blast air inlet pipe is connected with a hot-air blower through a hot-blast air electric valve. The activated carbon filler is heated through a steam generator and dried through the hot-air blower. In-situ regeneration of activated carbon is achieved, the service life is prolonged, and the ventilation cabinet organic waste gas purification device and a ventilation cabinet are arranged dependently, so that energy consumption of a fan is lowered.
Description
Technical field
The invention belongs to waste gas purification technical field, particularly a kind of vent cabinet cleaning equipment for waste organic gas and regeneration method of active carbon and circuit controller.
Background technology
Along with the scale of school duty room and R&D units and quantity constantly increase, laboratory pollution problem is also outstanding day by day.Laboratory hood exhaust emission kind is mixed, and concentration is high, strong toxicity, and discharge capacity is little and harm is large, and most laboratory is all positioned at aggregation zone of living and handle official business, and should cause enough attention.
In prior art, organic waste-gas purification method mainly contains the catalytic combustion method of purification, directly to burn the method for purification, biological clarification, the plasma decomposition method of purification and the active carbon adsorption method of purification.Because active carbon adsorption is easy to implement, laboratory hood organic exhaust gas generally adopts the charcoal absorption method of purification.In prior art, have a kind of vent cabinet cleaning equipment for waste organic gas, its structure comprises the adsorption tower be connected with vent cabinet through pipeline, is provided with the blower fan for air draft in pipeline, is provided with the active carbon for purifying exhaust air in adsorption tower.Its weak point is: one, and adsorption tower is arranged on roof or ground usually, longer with the distance of vent cabinet, and therefore gas sampling pipeline is long, and blower fan power consumption is large, and purification cost is higher, and the pipeline between multiple stage vent cabinet disturbs mutually, and pipe laying difficulty is large; Its two, in order to ensure purification efficiency, active carbon needs timely replacing in use for some time, and the active carbon replacement cycle in adsorption tower is difficult to grasp, and the cost constantly changing active carbon is higher.
Summary of the invention
An object of the present invention is to provide a kind of vent cabinet cleaning equipment for waste organic gas, making itself and the interdependent layout of vent cabinet, shortening the duct length for collecting vent cabinet waste gas, reduces fan energy consumption and piping cost, can discharge nearby after waste gas purification.
The object of the present invention is achieved like this: a kind of vent cabinet cleaning equipment for waste organic gas, the exhaust system comprising active carbon filler and be connected with vent cabinet, described exhaust system comprises the external air exhausting tube be fixedly mounted on exterior wall, the air outlet place correspondence of external air exhausting tube is provided with exhaust fan, upright purification tank body is also provided with between described external air exhausting tube and vent cabinet, the other end of described external air exhausting tube is connected with the top of purification tank body, the top correspondence of purification tank body is provided with reducing Five-way tube, described reducing Five-way tube comprises a upper connecting tube and four lower linking tubes that Open Side Down, the upper connecting tube of reducing Five-way tube is connected with vent cabinet through vent cabinet exhaust duct, four equal correspondences of lower linking tube of reducing Five-way tube are connected with air draft down pipe, described purification tank body lower part is fixedly connected with the waste collection bucket be connected as a single entity with tank body, separate through porous supporting plate between purification tank body and waste collection bucket, described active carbon filler is deposited in purification tank interior through porous supporting plate, the lower end of described air draft down pipe is connected with the Ji Fengqu inside waste collection bucket through union elbow, described porous supporting plate is vertically provided with some steam gas distribution pipes, the upper end of every root steam gas distribution pipe is all imbedded in active carbon filler, lower end is connected with the steam inlet duct be horizontally set in waste collection bucket, the air inlet of steam inlet duct is connected with steam generator through steam motor-driven valve, described waste collection bucket Nei Jifeng district is connected with hot blast air inlet pipe, and the air inlet of hot blast air inlet pipe is connected with air-heater through hot blast motor-driven valve.
During the work of this device, exhaust fan works, vent cabinet waste gas enters the upper connecting tube of reducing Five-way tube through vent cabinet exhaust duct, four corresponding air draft down pipes are entered respectively again from four lower linking tubes of reducing Five-way tube, waste gas enters waste collection Dou Jifeng district through union elbow again, enter purification tank interior by the hole on porous supporting plate, the impurity such as attached aromatics, alcohols, lipid in waste gas is fallen in active carbon filler absorption, and purified gas is discharged by external air exhausting tube.Compared with prior art, beneficial effect of the present invention is: will purify tank body and the interdependent layout of vent cabinet, shorten the duct length collecting vent cabinet waste gas, waste gas enters purification tank body and can discharge nearby after active carbon filler purification, reduces fan energy consumption and piping cost.This device can adapt to the features such as laboratory exhaust gas discharge kind is many, change in concentration large, intermittent operation, and supporting mutually with vent cabinet, does not change the existing layout in laboratory.This apparatus structure is simple, easy to use, is easy to promote.
As a further improvement on the present invention, the upside of described porous supporting plate is fixedly welded with the hollow cuboid raised line of 8-10 root by uniform intervals spread configuration, the width of every root raised line is 25-35mm, and the height of raised line is 45-55mm, adjacent raised line be spaced apart 75-85mm; Hole on porous supporting plate is the some rectangle passages being arranged in every root raised line both sides by uniform intervals, the width of rectangle passage is 1.5-2.5mm, be highly 35-45mm, the spacing of adjacent vent holes is 7-9mm, described porous supporting plate surface and the below being positioned at every root raised line is equipped with the circular hole that some diameters are 15-25mm, the interval equidistant arrangement that adjacent circular holes below every root raised line presses 45-55mm is arranged, and described waste collection Dou Jifeng district is connected with purification tank interior with passage through described circular hole.Waste gas in waste collection Dou Jifeng district enters in active carbon filler by the passage of the circular hole on porous supporting plate, raised line both sides successively, the resistance of air-flow when porous supporting plate enters active carbon filler is reduced greatly, and decreases the loss amount that granular activated carbon leaks under the hole porous supporting plate; Waste gas can enter in active carbon filler more equably, and active carbon adsorbs the harmful substance in waste gas more fully.
As a further improvement on the present invention, described raised line is provided with 9, and the width of raised line is 30mm, and the height of raised line is 50mm, adjacent raised line be spaced apart 80mm; The width of described passage is 2mm, is highly 40mm, and the spacing of adjacent vent holes is 8mm, and the diameter of described circular hole is 20mm, and the spacing of adjacent circular holes is 50mm.This technical scheme makes waste gas enter more equably in active carbon filler from the passage of the circular hole porous supporting plate and raised line both sides, and waste gas is tightly held by activated carbon purification fully, improves purification efficiency.
As a further improvement on the present invention, the upper and lower of described purification pot body sidewall is respectively equipped with filler charging aperture and filler discharging opening.In purification tank body, add active carbon filler by filler charging aperture, when active carbon filler uses certain hour to need to change, by filler discharging opening, active carbon filler is taken out.
As a further improvement on the present invention, the height of described active carbon filler layer is set to 550-650mm, purification tank interior the upper horizontal being positioned at active carbon filler is provided with screen pack, and screen pack is arranged on the top of filler charging aperture.This technical scheme makes active carbon filler adsorb the effect of harmful substance in waste gas better, and waste gas is by active carbon filler and when upwards rising along purification tank body, can take away amount of activated charcoal particle, the active carbon filler be less easily entrained by can retain by screen pack.
The steam sprayed to make steam generator can more uniformly enter purification tank body, and described steam gas distribution pipe is provided with 9, and steam gas distribution pipe is uniform spread configuration circumferentially.
Two of object of the present invention is to provide a kind of regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas, make active carbon filler after a certain period of use time, can in-situ regeneration be carried out, reduce and change number of times and operating cost, extend the service life of active carbon, greatly save purification cost.
For this reason, technical scheme of the present invention is: a kind of regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas, comprise the steps: the active carbon filler finished changing to carry out recycling several times, the process that at every turn recycles of active carbon filler comprises the steps:
Stop after described exhaust fan work 200-900h, steam generator work stops after passing into the steam 20-40min of 170-190 DEG C, and air-heater work stops after passing into the hot blast 50-70min of 130-150 DEG C, vent cabinet waste gas purification apparatus no-load running 25-35min.
Exhaust fan works, vent cabinet waste gas purification apparatus starts purification exhaust case waste gas, active carbon filler starts regeneration after using 200-900h, steam generator produces steam and enters active carbon filler layer by steam inlet duct and steam gas distribution pipe, Steam Heating active carbon filler, improve the mean kinetic energy of adsorption molecule, adsorption molecule departs from activated carbon surface, the waste liquid produced enters in waste collection bucket by porous supporting plate, then air-heater produces hot blast and enters Ji Fengqu through hot blast air inlet pipe, hot blast is by the circular hole on porous supporting plate, passage on raised line enters active carbon filler layer again and dries, the regeneration of active carbon is completed after vent cabinet waste gas purification apparatus no-load running 25-35min, that then repeats above-mentioned active carbon filler recycles process.This method makes after active carbon filler completes absorption to waste gas, can carry out in-situ regeneration, reduce and change number of times and operating cost, and then continue purifying exhaust air, extend the service life of active carbon, greatly save purification cost.
In order to use active carbon filler as far as possible, better circular regeneration is carried out to active carbon, described active carbon filler carries out recycling five times, recycle in process at every turn, steam generator work stops after passing into the steam 30min of 180 DEG C, air-heater work stops after passing into the hot blast 60min of 140 DEG C, vent cabinet waste gas purification apparatus no-load running 30min.After active carbon filler recycles five times, adsorption effect reduces greatly, passes into the steam 30min of 180 DEG C, can abundant heating of Activated carbon filling material, passes into the hot blast 60min of 140 DEG C, fully can dry active carbon, saves the energy.
In order to ensure that active carbon filler is good to the adsorption effect of waste gas, the first time of described active carbon filler recycles in process, stops after exhaust fan work 700-900h; Second time recycles in process, stops after exhaust fan work 500-700h; Third time recycles in process, stops after exhaust fan work 400-600h; Recycle in process 4th time, stop after exhaust fan work 300-500h; Recycle in process 5th time, stop after exhaust fan work 200-400h.Active carbon regenerates after using, and adsorption effect can reduce, and recycles in process five times, and the lasting adsorption time of active carbon filler progressively shortens.
Three of object of the present invention is to provide a kind of circuit controller of regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas, can realize the regenerative process accurately controlling active carbon.
For achieving the above object: a kind of circuit controller of regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas, comprising:
Power module, for providing the operating voltage of MCU Microprocessor Control Unit, steam generator, air-heater and exhaust fan;
Time detecting module, for detecting the working time of steam generator, air-heater and exhaust fan;
Steam generator control module, for controlling the duty of steam generator;
Air-heater control module, for controlling the duty of air-heater;
Exhaust fan control module, for controlling the duty of exhaust fan;
MCU Microprocessor Control Unit, for controlling the duty of steam generator control module, air-heater control module and exhaust fan control module;
During circuit controller work, MCU Microprocessor Control Unit sends working signal to exhaust fan control module, when the working time that time detection module records exhaust fan is 200-900h, MCU Microprocessor Control Unit sends silence signal to exhaust fan control module, and sends working signal to steam generator control module; When the working time that time detection module records steam generator is 20-40min, MCU Microprocessor Control Unit sends silence signal to steam generator control module, and thermotropism fan control module sends working signal; When the working time that time detection module records air-heater is 50-70min, MCU Microprocessor Control Unit thermotropism fan control module sends silence signal, and send unloaded operation signal to exhaust fan control module, when the unloaded operation time that time detection module records exhaust fan is 25-35min, MCU Microprocessor Control Unit sends working signal to exhaust fan control module; Repetitive cycling said process 4-6 time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged drawing at A place in Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the structural representation of porous supporting plate.
Fig. 5 is that the AA of Fig. 4 is to sectional view.
Fig. 6 is the sectional drawing of the raised line on porous supporting plate.
Fig. 7 is the schematic diagram of the circuit controller of the regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas.
Fig. 8 is the job step schematic diagram of the circuit controller of the regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas.
Wherein, 1 external air exhausting tube, 2 exterior walls, 3 exhaust fans, 4 purification tank bodies, 5 reducing Five-way tubes, 6 vent cabinet exhaust ducts, 7 vent cabinets, 8 waste collection buckets, 8a Ji Fengqu, 9 porous supporting plates, 10 active carbon fillers, 11 air draft down pipes, 12 union elbows, 13 steam gas distribution pipes, 14 steam inlet ducts, 15 steam generators, 16 hot blast air inlet pipe, 17 air-heaters, 18 discharging of waste liquid pipes, 19 bracing frames, 20 raised lines, 21 circular holes, 22 passages, 23 filler charging apertures, 24 filler discharging openings, 25 screen packs.
Detailed description of the invention
As Fig. 1-6, for a kind of vent cabinet cleaning equipment for waste organic gas of the present invention, the exhaust system comprising active carbon filler 10 and be connected with vent cabinet, described exhaust system comprises the external air exhausting tube 1 be fixedly mounted on exterior wall 2, the air outlet place correspondence of external air exhausting tube 1 is provided with exhaust fan 3, also be provided with upright purification tank body 4 between external air exhausting tube 1 and vent cabinet 7, purification tank body 4 is fixedly mounted on bracing frame 19; The other end of external air exhausting tube 1 is connected with the top of purification tank body 4, the top correspondence of purification tank body 4 is provided with reducing Five-way tube 5, reducing Five-way tube 5 comprises a upper connecting tube and four lower linking tubes that Open Side Down, the upper connecting tube of reducing Five-way tube 5 is connected with vent cabinet 7 through vent cabinet exhaust duct 6, four equal correspondences of lower linking tube of reducing Five-way tube 5 are connected with air draft down pipe 11, purification tank body 4 bottom is fixedly connected with the waste collection bucket 8 be connected as a single entity with tank body, and waste collection bucket 8 lower end is provided with discharging of waste liquid pipe 18; Separate through porous supporting plate 9 between purification tank body 4 and waste collection bucket 8, it is inner that active carbon filler 10 is deposited in purification tank body 4 through porous supporting plate 9, in order to reduce the loss amount of active carbon, the upside of porous supporting plate 9 is fixedly welded with 9 hollow cuboid raised lines 20 by uniform intervals spread configuration, the width of every root raised line 20 is 30mm, the height of raised line 20 is 50mm, adjacent raised line 20 be spaced apart 80mm; Hole on porous supporting plate 9 is the some rectangle passages 22 being arranged in every root raised line 20 both sides by uniform intervals, the width of rectangle passage 22 is 2mm, be highly 40mm, the spacing of adjacent vent holes 22 is 8mm, porous supporting plate 9 surface and the below being positioned at every root raised line 20 is equipped with the circular hole 21 that some diameters are 20mm, the interval equidistant arrangement that adjacent circular holes 21 below every root raised line 20 presses 50mm is arranged, and the Ji Feng district 8a of waste collection bucket 8 is connected with purification tank body 4 inside with passage 22 through circular hole 21; The lower end of air draft down pipe 11 is connected with the Ji Feng district 8a inside waste collection bucket 8 through union elbow 12; Porous supporting plate 9 is vertically provided with 9 steam gas distribution pipes, the upper end of every root steam gas distribution pipe 9 is all imbedded in active carbon filler 10, lower end is connected with the steam inlet duct 14 be horizontally set in waste collection bucket 8, in order to make steam more evenly contact with active carbon filler fully, the upper end of steam gas distribution pipe is provided with some micropores; The air inlet of steam inlet duct 14 is connected with steam generator 15 through steam motor-driven valve, and waste collection bucket 8 Nei Jifeng district 8a is connected with hot blast air inlet pipe 16, and the air inlet of hot blast air inlet pipe 16 is connected with air-heater 17 through hot blast motor-driven valve.The upper and lower of purification tank body 4 sidewall is respectively equipped with filler charging aperture 23 and filler discharging opening 24.The height that active carbon filler is 10 layers is set to 550-650mm, and purification tank body 4 is inner and the upper horizontal being positioned at active carbon filler 10 is provided with screen pack 25, and screen pack 25 is arranged on the top of filler charging aperture 23.
The regeneration method of active carbon of a kind of vent cabinet cleaning equipment for waste organic gas of the present invention, comprise the steps: the active carbon filler 10 finished changing to carry out recycling five times, the process that at every turn recycles of active carbon filler 10 comprises the steps:
Exhaust fan 3 works after 800h and stops, and stops after steam generator 15 work passes into the steam 30min of 180 DEG C, stops, vent cabinet waste gas purification apparatus no-load running 30min after air-heater 17 work passes into the hot blast 60min of 140 DEG C.In order to ensure that active carbon filler is good to the adsorption effect of waste gas, the first time of active carbon filler 10 recycles in process, and exhaust fan 3 works after 800h and stops; Second time recycles in process, and exhaust fan 3 works after 600h and stops; Third time recycles in process, and exhaust fan 3 works after 500h and stops; Recycle in process 4th time, exhaust fan 3 works after 400h and stops; Recycle in process 5th time, exhaust fan 3 works after 300h and stops.
During a kind of vent cabinet cleaning equipment for waste organic gas work of the present invention, vent cabinet waste gas is sucked the upper connecting tube of reducing Five-way tube 5 by exhaust fan 3 through vent cabinet exhaust duct 6, four corresponding air draft down pipes 11 are entered respectively again from four lower linking tubes of reducing Five-way tube 5, waste gas enters the Ji Feng district 8a of waste collection bucket 8 again through union elbow 12, purification tank body 4 is entered inner by the hole on porous supporting plate 9, active carbon filler 10 adsorbs to fall the impurity such as attached aromatics, alcohols, lipid in waste gas, and purified gas is discharged by external air exhausting tube 1, exhaust fan 3 quits work, steam generator 15 produces steam and enters active carbon filler 10 layers by steam inlet duct 14 and steam gas distribution pipe 13, Steam Heating active carbon filler 10, improve the mean kinetic energy of adsorption molecule, adsorption molecule departs from activated carbon surface, the waste liquid produced enters in waste collection bucket 8 by porous supporting plate 9, then air-heater 17 produces hot blast and enters Ji Fengqu through hot blast air inlet pipe 16, hot blast is by the circular hole 21 on porous supporting plate 9, passage 22 on raised line 20 enters active carbon filler 9 layers again and dries, the regeneration of active carbon is completed after vent cabinet waste gas purification apparatus no-load running 30min, in order to ensure purification efficiency, after active carbon filler recycles 5 times, must change.
Regeneration activity carbon filling material can recycle five times, decrease and change number of times and operating cost, greatly reduce purification cost, tank body and the interdependent layout of vent cabinet will be purified, shorten the duct length collecting vent cabinet waste gas, waste gas enters purification tank body and can discharge nearby after active carbon filler purification, reduces fan energy consumption and piping cost.This device can adapt to the features such as laboratory exhaust gas discharge kind is many, change in concentration large, intermittent operation, and supporting mutually with vent cabinet, does not change the existing layout in laboratory.
As Fig. 7 and 8, be a kind of circuit controller of regeneration method of active carbon of vent cabinet cleaning equipment for waste organic gas, comprise:
Power module, for providing the operating voltage of MCU Microprocessor Control Unit, steam generator, air-heater and exhaust fan;
Time detecting module, for detecting the working time of steam generator, air-heater and exhaust fan;
Steam generator control module, for controlling the duty of steam generator;
Air-heater control module, for controlling the duty of air-heater;
Exhaust fan control module, for controlling the duty of exhaust fan;
MCU Microprocessor Control Unit, for controlling the duty of steam generator control module, air-heater control module and exhaust fan control module;
During circuit controller work, MCU Microprocessor Control Unit sends working signal to exhaust fan control module, when the working time T that time detection module records exhaust fan is 200-900h, MCU Microprocessor Control Unit sends silence signal to exhaust fan control module, and sends working signal to steam generator control module; When the working time A that time detection module records steam generator is 20-40min, MCU Microprocessor Control Unit sends silence signal to steam generator control module, and thermotropism fan control module sends working signal; When the working time B that time detection module records air-heater is 50-70min, MCU Microprocessor Control Unit thermotropism fan control module sends silence signal, and send unloaded operation signal to exhaust fan control module, when time detection module record exhaust fan the unloaded operation time, C was 25-35min time, MCU Microprocessor Control Unit sends working signal to exhaust fan control module; Repetitive cycling said process 4 times again.The working time T of exhaust fan
1for 800h, T in first time cyclic process
2for 600h, T in second time cyclic process
3for 500h, T in third time cyclic process
4for 400h, T in the 4th cyclic process
5for 300h.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (10)
1. a vent cabinet cleaning equipment for waste organic gas, the exhaust system comprising active carbon filler and be connected with vent cabinet, described exhaust system comprises the external air exhausting tube be fixedly mounted on exterior wall, the air outlet place correspondence of external air exhausting tube is provided with exhaust fan, it is characterized in that: between described external air exhausting tube and vent cabinet, be also provided with upright purification tank body, the other end of described external air exhausting tube is connected with the top of purification tank body, the top correspondence of purification tank body is provided with reducing Five-way tube, described reducing Five-way tube comprises a upper connecting tube and four lower linking tubes that Open Side Down, the upper connecting tube of reducing Five-way tube is connected with vent cabinet through vent cabinet exhaust duct, four equal correspondences of lower linking tube of reducing Five-way tube are connected with air draft down pipe, described purification tank body lower part is fixedly connected with the waste collection bucket be connected as a single entity with tank body, separate through porous supporting plate between purification tank body and waste collection bucket, described active carbon filler is deposited in purification tank interior through porous supporting plate, the lower end of described air draft down pipe is connected with the Ji Fengqu inside waste collection bucket through union elbow, described porous supporting plate is vertically provided with some steam gas distribution pipes, the upper end of every root steam gas distribution pipe is all imbedded in active carbon filler, lower end is connected with the steam inlet duct be horizontally set in waste collection bucket, the air inlet of steam inlet duct is connected with steam generator through steam motor-driven valve, described waste collection bucket Nei Jifeng district is connected with hot blast air inlet pipe, and the air inlet of hot blast air inlet pipe is connected with air-heater through hot blast motor-driven valve.
2. a kind of vent cabinet cleaning equipment for waste organic gas according to claim 1, it is characterized in that: the upside of described porous supporting plate is fixedly welded with the hollow cuboid raised line of 8-10 root by uniform intervals spread configuration, the width of every root raised line is 25-35mm, the height of raised line is 45-55mm, adjacent raised line be spaced apart 75-85mm; Hole on porous supporting plate is the some rectangle passages being arranged in every root raised line both sides by uniform intervals, the width of rectangle passage is 1.5-2.5mm, be highly 35-45mm, the spacing of adjacent vent holes is 7-9mm, described porous supporting plate surface and the below being positioned at every root raised line is equipped with the circular hole that some diameters are 15-25mm, the interval equidistant arrangement that adjacent circular holes below every root raised line presses 45-55mm is arranged, and described waste collection Dou Jifeng district is connected with purification tank interior with passage through described circular hole.
3. a kind of vent cabinet cleaning equipment for waste organic gas according to claim 2, is characterized in that: described raised line is provided with 9, and the width of raised line is 30mm, and the height of raised line is 50mm, adjacent raised line be spaced apart 80mm; The width of described passage is 2mm, is highly 40mm, and the spacing of adjacent vent holes is 8mm, and the diameter of described circular hole is 20mm, and the spacing of adjacent circular holes is 50mm.
4. a kind of vent cabinet cleaning equipment for waste organic gas according to claim 3, is characterized in that: the upper and lower of described purification pot body sidewall is respectively equipped with filler charging aperture and filler discharging opening.
5. a kind of vent cabinet cleaning equipment for waste organic gas according to claim 4, it is characterized in that: the height of described active carbon filler layer is set to 550-650mm, purification tank interior the upper horizontal being positioned at active carbon filler is provided with screen pack, screen pack is arranged on the top of filler charging aperture.
6. a kind of vent cabinet cleaning equipment for waste organic gas according to claim 5, is characterized in that: described steam gas distribution pipe is provided with 9, and steam gas distribution pipe is uniform spread configuration circumferentially.
7. the regeneration method of active carbon of a kind of vent cabinet cleaning equipment for waste organic gas according to claim 1-6 any one, is characterized in that comprising the steps:
Carried out recycling several times by the active carbon filler finished changing, the process that at every turn recycles of active carbon filler comprises the steps:
Stop after described exhaust fan work 200-900h, steam generator work stops after passing into the steam 20-40min of 170-190 DEG C, and air-heater work stops after passing into the hot blast 50-70min of 130-150 DEG C, vent cabinet waste gas purification apparatus no-load running 25-35min.
8. the regeneration method of active carbon of a kind of vent cabinet cleaning equipment for waste organic gas according to claim 7, it is characterized in that: described active carbon filler carries out recycling five times, recycle in process at every turn, steam generator work stops after passing into the steam 30min of 180 DEG C, air-heater work stops after passing into the hot blast 60min of 140 DEG C, vent cabinet waste gas purification apparatus no-load running 30min.
9. the regeneration method of active carbon of a kind of vent cabinet cleaning equipment for waste organic gas according to claim 8, is characterized in that: the first time of described active carbon filler recycles in process, stops after exhaust fan work 700-900h; Second time recycles in process, stops after exhaust fan work 500-700h; Third time recycles in process, stops after exhaust fan work 400-600h; Recycle in process 4th time, stop after exhaust fan work 300-500h; Recycle in process 5th time, stop after exhaust fan work 200-400h.
10. the circuit controller of the regeneration method of active carbon of a kind of vent cabinet cleaning equipment for waste organic gas according to claim 7, is characterized in that comprising:
Power module, for providing the operating voltage of MCU Microprocessor Control Unit, steam generator, air-heater and exhaust fan;
Time detecting module, for detecting the working time of steam generator, air-heater and exhaust fan;
Steam generator control module, for controlling the duty of steam generator;
Air-heater control module, for controlling the duty of air-heater;
Exhaust fan control module, for controlling the duty of exhaust fan;
MCU Microprocessor Control Unit, for controlling the duty of steam generator control module, air-heater control module and exhaust fan control module;
During circuit controller work, MCU Microprocessor Control Unit sends working signal to exhaust fan control module, when the working time that time detection module records exhaust fan is 200-900h, MCU Microprocessor Control Unit sends silence signal to exhaust fan control module, and sends working signal to steam generator control module; When the working time that time detection module records steam generator is 20-40min, MCU Microprocessor Control Unit sends silence signal to steam generator control module, and thermotropism fan control module sends working signal; When the working time that time detection module records air-heater is 50-70min, MCU Microprocessor Control Unit thermotropism fan control module sends silence signal, and send unloaded operation signal to exhaust fan control module, when the unloaded operation time that time detection module records exhaust fan is 25-35min, MCU Microprocessor Control Unit sends working signal to exhaust fan control module; Repetitive cycling said process 4-6 time.
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| CN201510959611.3A CN105477976B8 (en) | 2015-12-21 | 2015-12-21 | Fume hood organic waste gas purification device, activated carbon regeneration method and circuit controller |
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| CN108543797A (en) * | 2018-06-19 | 2018-09-18 | 中绿能汉郁（天津）科技有限公司 | A kind of novel vent cabinet |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105477976B8 (en) | 2019-12-27 |
| CN105477976B (en) | 2018-01-12 |
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Address after: 225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52 Applicant after: Yangzhou Tian Hui experimental equipment Environmental Protection Engineering Co.,Ltd. Applicant after: YANGZHOU University Address before: 225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52 Applicant before: YANGZHOU TIANHUI STEEL & WOOD PRODUCTS ENGINEERING Co.,Ltd. Applicant before: Yangzhou University |
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Correction item: Patentee|Address|Patentee Correct: Yangzhou Tian Tian laboratory equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university False: Yangzhou Tian Hui experimental equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university Number: 50-02 Volume: 33 |
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| CI03 | Correction of invention patent | ||
| CI03 | Correction of invention patent |
Correction item: Patentee|Address|Patentee Correct: Yangzhou Tian Tian laboratory equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university False: Yangzhou Tian Hui experimental equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university Number: 02-02 Page: The title page Volume: 34 Correction item: Patentee|Address|Patentee Correct: Yangzhou Tian Tian laboratory equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university False: Yangzhou Tian Hui experimental equipment Environmental Protection Engineering Co., Ltd.|225000 Jiangsu Province Economic Development Zone Yangzhou City Shiqiao Industrial Park Shi Sha Lu No. 52|yangzhou university Number: 02-02 Volume: 34 |