CN112212347A - Laboratory hazardous waste cooperative treatment system and method - Google Patents
Laboratory hazardous waste cooperative treatment system and method Download PDFInfo
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- CN112212347A CN112212347A CN202011213671.8A CN202011213671A CN112212347A CN 112212347 A CN112212347 A CN 112212347A CN 202011213671 A CN202011213671 A CN 202011213671A CN 112212347 A CN112212347 A CN 112212347A
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims description 82
- 239000007788 liquid Substances 0.000 claims description 58
- 239000007787 solid Substances 0.000 claims description 41
- 238000003860 storage Methods 0.000 claims description 32
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 239000006072 paste Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 239000002910 solid waste Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004056 waste incineration Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/446—Waste feed arrangements for liquid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/60—Separating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/701—Blending with additives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/702—Blending with other waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/20—Rotary drum furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a laboratory hazardous waste cooperative treatment system and a method, which belong to the technical field of laboratory hazardous waste treatment and comprise the following steps: the method comprises the steps of laboratory hazardous waste classification, laboratory hazardous waste pretreatment, laboratory hazardous waste incineration and flue gas utilization. Categorised and the preliminary treatment is useless to the laboratory danger of different forms, can make the laboratory danger useless more abundant when burning in the rotary kiln, carry out the postcombustion to the useless flue gas that burns the production of burning of laboratory danger, can make the abundant burning of harmful substance, prevent that the workman from directly inhaling harmful substance, carry out recycle to the flue gas that the postcombustion produced, the resource utilization ratio of system has greatly been promoted, and the environment risk harmful substance has been reduced, the resource utilization ratio of system has greatly been promoted, and the environment risk has been reduced.
Description
Technical Field
The invention belongs to the technical field of laboratory hazardous waste treatment, and particularly relates to a laboratory hazardous waste cooperative treatment system and method.
Background
The laboratory hazardous waste mainly comprises various overdue and invalid waste chemical reagents and toxic and harmful waste water, waste liquid or waste residue generated in the experimental process, wherein packaging bottles of various chemicals also belong to the laboratory hazardous waste, and if the laboratory hazardous waste is randomly discharged, water and soil can be polluted, the environmental function level of a region is reduced, and if no measures are taken for control, serious harm is caused to the global environment;
the existing laboratory hazardous waste treatment technology mainly comprises a safe landfill method, wet leaching, pyrometallurgical smelting and the like, but the process flows are complex, the occupied area is large, the energy consumption is high, the production automation level is low, the labor intensity of workers is high, the operation environment is poor, the workers can possibly suck harmful substances during working, the harm is caused to the health of the workers, the bottom of the tank body cannot be stirred by the existing stirrer when the hazardous waste in the liquid laboratory is subjected to compatibility and uniform mixing, and the accumulation of solid impurities at the bottom of the tank body can be caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a system and a method for the cooperative disposal of dangerous waste in a laboratory.
In order to achieve the purpose, the invention provides the following technical scheme:
a laboratory hazardous waste cooperative treatment method comprises the following steps:
s1, classifying the laboratory dangerous wastes, wherein the laboratory dangerous wastes are divided into solid, liquid and paste laboratory dangerous wastes according to the analysis of a laboratory and different properties and components, the solid laboratory dangerous wastes are respectively sent to various storage pools of a solid laboratory dangerous waste storage area to be stored, namely a solid laboratory dangerous waste crushing pool, a high-heat-value solid laboratory dangerous waste storage pool and a low-heat-value solid laboratory dangerous waste storage pool, the barreled laboratory waste liquid is conveyed to a waste liquid storage tank to be stored through a vacuum system and a pumping system, and the paste laboratory dangerous wastes are filtered by a coarse filter and then conveyed to a paste dangerous waste storage tank through a feeding pump;
s2, pretreating laboratory hazardous wastes, conveying the solid laboratory hazardous wastes in a solid laboratory hazardous waste crushing pool after crushing together with a high-calorific-value solid laboratory hazardous waste storage pool and a low-calorific-value solid laboratory hazardous waste storage pool into a mixing pool for mixing, mixing liquid laboratory hazardous wastes in a waste liquid storage tank uniformly in a compatible mode and adjusting acid-base property, mixing paste laboratory hazardous wastes in a mixing stirrer with sawdust, and conveying the paste laboratory hazardous wastes to a solid waste storage area after packaging by a packaging machine;
s3, burning laboratory hazardous wastes, wherein solid, liquid and paste laboratory hazardous wastes enter a rotary kiln from the front end of the rotary kiln, smoke generated after primary combustion in the rotary kiln enters a secondary combustion chamber for secondary combustion, burned residues fall to a water-sealed slag discharging machine, and the residues are transported by a slag transport vehicle for unified treatment after being cooled by water;
s4, flue gas utilization, wherein high-temperature flue gas discharged from an outlet of the secondary combustion chamber enters the waste heat boiler, steam is generated while the flue gas is cooled, the steam is discharged from a steam drum of the boiler, part of the steam enters the high-temperature steam distributing cylinder for steam distribution after being superheated by the heat device, and the other part of the steam is introduced from the steam drum to enter the low-temperature steam distributing cylinder for use.
Preferably, the combustion temperature in the secondary combustion chamber in the S3 is 1100-1200 ℃, and the combustion time is 2-4S.
Preferably, solid, liquid and paste laboratory hazardous wastes in the S3 are mixed with waste activated carbon for combustion in the rotary kiln, and the addition amount of the waste activated carbon is 10-30% of the weight of the laboratory hazardous wastes.
Preferably, the superheating temperature of the superheater in the S4 is 240-250 ℃, the temperature of steam in the high-temperature steam-distributing cylinder is 360 ℃, and the pressure is 1.5 MPa.
According to a cooperative treatment method of laboratory hazardous waste, a liquid laboratory hazardous waste storage tank with a stirring mechanism is provided, and comprises a tank body, wherein the top of the tank body is communicated with a barreled waste liquid input pipe and other waste liquid input pipes, the top of the tank body is fixedly connected with a motor through a screw, the output end of the motor penetrates through the top of the tank body, a first rotating shaft is installed at the output end of the motor, and a waste liquid discharge pipe is arranged at the bottom of the tank body;
the inner wall welding of the jar body has the baffle, first rotation axis runs through in the surface of baffle, the one end of first rotation axis is rotated and is connected in jar bottom of internal chamber, the outer wall welding of first rotation axis has first stirring vane, the outer wall of first rotation axis is fixed with first gear, first gear sets up between the bottom of baffle and jar bottom of internal chamber, jar bottom of internal chamber is rotated and is connected with the second rotation axis, the second rotation axis runs through in the surface of baffle, the outer wall welding of second rotation axis has second stirring vane, the outer wall of second rotation axis is fixed with the second gear, second gear and first gear intermeshing.
Preferably, a sealing bearing is sleeved at the joint of the first rotating shaft and the partition plate and the joint of the second rotating shaft and the partition plate.
Preferably, the output end of the motor is connected with the first rotating shaft through a coupling.
Preferably, the waste liquid discharge pipe is arranged inside the tank body, one end of the waste liquid discharge pipe is flush with the top of the partition plate, and the waste liquid discharge pipe is provided with an electromagnetic valve.
The invention has the technical effects and advantages that:
1. the classification and pretreatment of the laboratory hazardous wastes in different forms can make the laboratory hazardous wastes more sufficient when burning in the rotary kiln, realize the reduction of the laboratory hazardous wastes, carry out secondary combustion on the flue gas generated by the incineration of the laboratory hazardous wastes, fully burn the harmful substances, prevent workers from directly inhaling the harmful substances, recycle the flue gas generated by the secondary combustion, greatly improve the resource utilization rate of the system and reduce the environmental risk;
2. this device drives second rotation axis surface welding's second stirring vane through first gear drive second gear, through the rotation of first rotation axis and rotates, continues the stirring to the bottom of the jar body, prevents that solid impurity from piling up in jar body bottom, has improved the useless efficiency of mixing of liquid laboratory danger.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of region A of FIG. 1 according to the present invention.
In the figure: 1. a tank body; 2. a first rotating shaft; 3. a barreled waste liquid input tube; 4. a motor; 5. other waste liquid input pipes; 6. a first stirring blade; 7. a waste liquid discharge pipe; 8. a first gear; 9. a partition plate; 10. a second stirring blade; 11. a second rotation shaft; 12. a second gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A laboratory hazardous waste cooperative treatment method comprises the following steps:
s1, classifying laboratory dangerous wastes, wherein the laboratory dangerous wastes are divided into solid, liquid and paste laboratory dangerous wastes according to the analysis of a laboratory and different in properties and components, the solid laboratory dangerous wastes are respectively sent to each storage tank of a solid laboratory dangerous waste storage area to be stored, namely a solid laboratory dangerous waste crushing tank, a high-heat-value solid laboratory dangerous waste storage tank and a low-heat-value solid laboratory dangerous waste storage tank, barreled laboratory waste liquid is conveyed into a waste liquid storage tank to be stored through a vacuum system and a pumping system, the paste laboratory dangerous wastes are filtered by a coarse filter and then conveyed into a paste dangerous waste storage tank through a feeding pump, and the solid laboratory dangerous wastes are more complicated in shape, larger in shape size or irregular in shape and beneficial to incineration treatment, so that the solid waste crushing tank is arranged for crushing the solid wastes;
s2, pretreating laboratory hazardous wastes, conveying the solid laboratory hazardous wastes in a solid laboratory hazardous waste crushing pool after crushing together with a high-calorific-value solid laboratory hazardous waste storage pool and a low-calorific-value solid laboratory hazardous waste storage pool into a mixing pool for mixing, mixing liquid laboratory hazardous wastes in a waste liquid storage tank uniformly in a compatible mode and adjusting acid-base property, mixing paste laboratory hazardous wastes in a mixing stirrer with sawdust, and conveying the paste laboratory hazardous wastes to a solid waste storage area after packaging by a packaging machine;
s3, burning the laboratory hazardous waste, wherein solid, liquid and paste laboratory hazardous waste enter a rotary kiln from the front end of the rotary kiln, smoke generated after primary combustion in the rotary kiln enters a secondary combustion chamber for secondary combustion, the burnt residues fall to a water-sealed slag extractor, the residues are transported by a slag transport vehicle after being cooled by water and are uniformly treated, the combustion temperature in the secondary combustion chamber is 1100-1200 ℃, the combustion time is 2-4S, so that harmful substances generated by the combustion of the laboratory hazardous waste are fully combusted, the solid, liquid and paste laboratory hazardous waste are mixed with waste activated carbon in the rotary kiln for combustion, the addition amount of the waste activated carbon is 10-30% of the weight of the laboratory hazardous waste, and the waste activated carbon can play a role of keeping a weak reducing atmosphere in the rotary kiln;
s4, utilizing the flue gas, enabling the high-temperature flue gas discharged from the outlet of the secondary combustion chamber to enter a waste heat boiler, generating steam while cooling the flue gas, discharging the steam from a boiler drum, enabling part of the steam to enter a high-temperature steam distributing cylinder for steam distribution after being overheated by a heater, leading saturated steam out of the drum to enter a low-temperature steam distributing cylinder for use, enabling the overheating temperature of a superheater to be 240-250 ℃, improving the combustion heat efficiency of the system, enabling the steam temperature in the high-temperature steam distributing cylinder to be 360 ℃ and the pressure to be 1.5MPa, overcoming the defect that the saturated steam needs to be heated by a heating belt for heating, and greatly reducing the operation cost.
The method provides a liquid laboratory hazardous waste storage tank with a stirring mechanism as shown in figures 1-2, which comprises a tank body 1;
the top of the tank body 1 is communicated with a barreled waste liquid input pipe 3 and other waste liquid input pipes 5, the top of the tank body 1 is fixedly connected with a motor 4 through a screw, the output end of the motor 4 penetrates through the top of the tank body 1, the output end of the motor 4 is provided with a first rotating shaft 2, the output end of the motor 4 is connected with the first rotating shaft 2 through a coupler, the coupler can play a role in buffering and shock absorption, a waste liquid discharge pipe 7 is arranged at the bottom of the tank body 1, the motor 4 drives a first stirring blade 6 to rotate through the first rotating shaft 2, and waste liquid in the tank body 1 is directly stirred;
the inner wall of the tank body 1 is welded with a partition plate 9, a first rotating shaft 2 penetrates through the surface of the partition plate 9, one end of the first rotating shaft 2 is rotatably connected to the bottom of the inner cavity of the tank body 1, the outer wall of the first rotating shaft 2 is welded with a first stirring blade 6, the outer wall of the first rotating shaft 2 is fixed with a first gear 8, the first gear 8 is arranged between the bottom of the partition plate 9 and the bottom of the inner cavity of the tank body 1, the bottom of the inner cavity of the tank body 1 is rotatably connected with a second rotating shaft 11, the second rotating shaft 11 penetrates through the surface of the partition plate 9, the outer wall of the second rotating shaft 11 is welded with a second stirring blade 10, the outer wall of the second rotating shaft 11 is fixed with a second gear 12, the second gear 12 is meshed with the first gear 8, the first rotating shaft 2 drives the first gear 8 to rotate, the first gear 8 drives the second rotating shaft 11 to rotate through the second gear, the bottom of the tank body 1 is stirred, so that solid impurities in the waste liquid are prevented from being accumulated, and the burden is brought to the cleaning of workers;
the joint of the first rotating shaft 2 and the partition plate 9 and the joint of the second rotating shaft 11 and the partition plate 9 are sleeved with sealing bearings, so that waste liquid is prevented from entering between the partition plate 9 and the bottom of the inner cavity of the tank body 1, and the first gear 8 and the second gear 12 are prevented from being damaged;
waste liquid discharge pipe 7 sets up in the inside of jar body 1, and the one end of waste liquid discharge pipe 7 flushes with the top of baffle 9, and the purpose prevents that the waste liquid discharge of jar body 1 inside is incomplete, leads to the waste liquid to pile up in jar body 1 bottom, installs the solenoid valve on the waste liquid discharge pipe 7, can pass through the break-make of solenoid valve control waste liquid discharge pipe 7.
The working principle is as follows: during the use, let in barreled waste liquid and other waste liquids inside jar body 1 through barreled waste liquid input tube 3 and other waste liquid input tubes 5, open motor 4's switch, motor 4 passes through the shaft coupling and drives first rotation axis 2 and rotate, make first rotation axis 2 drive first stirring vane 6 and rotate, first rotation axis 2 drives first gear 8 simultaneously and rotates, first gear 8 drives second rotation axis 11 through second gear 12 and rotates, thereby make second rotation axis 11 drive second stirring vane 10 and rotate, stir jar body 1's bottom, prevent that solid impurity from piling up, the useless mixing efficiency of liquid laboratory danger has been improved greatly.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A laboratory hazardous waste cooperative treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1, classifying the laboratory dangerous wastes, wherein the laboratory dangerous wastes are divided into solid, liquid and paste laboratory dangerous wastes according to the analysis of a laboratory and different properties and components, the solid laboratory dangerous wastes are respectively sent to various storage pools of a solid laboratory dangerous waste storage area to be stored, namely a solid laboratory dangerous waste crushing pool, a high-heat-value solid laboratory dangerous waste storage pool and a low-heat-value solid laboratory dangerous waste storage pool, the barreled laboratory waste liquid is conveyed to a waste liquid storage tank to be stored through a vacuum system and a pumping system, and the paste laboratory dangerous wastes are filtered by a coarse filter and then conveyed to a paste dangerous waste storage tank through a feeding pump;
s2, pretreating laboratory hazardous wastes, conveying the solid laboratory hazardous wastes in a solid laboratory hazardous waste crushing pool after crushing together with a high-calorific-value solid laboratory hazardous waste storage pool and a low-calorific-value solid laboratory hazardous waste storage pool into a mixing pool for mixing, mixing liquid laboratory hazardous wastes in a waste liquid storage tank uniformly in a compatible mode and adjusting acid-base property, mixing paste laboratory hazardous wastes in a mixing stirrer with sawdust, and conveying the paste laboratory hazardous wastes to a solid waste storage area after packaging by a packaging machine;
s3, burning laboratory hazardous wastes, wherein solid, liquid and paste laboratory hazardous wastes enter a rotary kiln from the front end of the rotary kiln, smoke generated after primary combustion in the rotary kiln enters a secondary combustion chamber for secondary combustion, burned residues fall to a water-sealed slag discharging machine, and the residues are transported by a slag transport vehicle for unified treatment after being cooled by water;
s4, flue gas utilization, wherein high-temperature flue gas discharged from an outlet of the secondary combustion chamber enters the waste heat boiler, steam is generated while the flue gas is cooled, the steam is discharged from a steam drum of the boiler, part of the steam enters the high-temperature steam distributing cylinder for steam distribution after being superheated by the heat device, and the other part of the steam is introduced from the steam drum to enter the low-temperature steam distributing cylinder for use.
2. The laboratory hazardous waste cooperative disposal method according to claim 1, wherein: the combustion temperature in the secondary combustion chamber in the S3 is 1100-1200 ℃, and the combustion time is 2-4S.
3. The laboratory hazardous waste cooperative disposal method according to claim 1, wherein: solid, liquid and paste laboratory hazardous waste in the S3 is mixed with waste activated carbon for combustion in the rotary kiln, and the addition amount of the waste activated carbon is 10-30% of the weight of the laboratory hazardous waste.
4. The laboratory hazardous waste cooperative disposal method according to claim 1, wherein: the superheating temperature of the superheater in the S4 is 240-250 ℃, the temperature of steam in the high-temperature steam distributing cylinder is 360 ℃, and the pressure is 1.5 MPa.
5. A system for implementing the laboratory hazardous waste cooperative method according to any one of claims 1 to 4, characterized in that: the device comprises a tank body (1), wherein the top of the tank body (1) is communicated with a barreled waste liquid input pipe (3) and other waste liquid input pipes (5), the top of the tank body (1) is fixedly connected with a motor (4) through a screw, the output end of the motor (4) penetrates through the top of the tank body (1), a first rotating shaft (2) is installed at the output end of the motor (4), and a waste liquid discharge pipe (7) is arranged at the bottom of the tank body (1);
the inner wall of the tank body (1) is welded with a clapboard (9), the first rotating shaft (2) penetrates through the surface of the clapboard (9), one end of the first rotating shaft (2) is rotatably connected with the bottom of the inner cavity of the tank body (1), a first stirring blade (6) is welded on the outer wall of the first rotating shaft (2), a first gear (8) is fixed on the outer wall of the first rotating shaft (2), the first gear (8) is arranged between the bottom of the clapboard (9) and the bottom of the inner cavity of the tank body (1), the bottom of the inner cavity of the tank body (1) is rotationally connected with a second rotating shaft (11), the second rotating shaft (11) penetrates through the surface of the partition board (9), a second stirring blade (10) is welded on the outer wall of the second rotating shaft (11), and a second gear (12) is fixed on the outer wall of the second rotating shaft (11), and the second gear (12) is meshed with the first gear (8).
6. The laboratory hazardous waste co-disposal system according to claim 5, wherein: and sealing bearings are sleeved at the joint of the first rotating shaft (2) and the partition plate (9) and the joint of the second rotating shaft (11) and the partition plate (9).
7. The laboratory hazardous waste co-disposal system according to claim 5, wherein: the output end of the motor (4) is connected with the first rotating shaft (2) through a coupler.
8. The laboratory hazardous waste co-disposal system according to claim 5, wherein: the waste liquid discharge pipe (7) is arranged inside the tank body (1), one end of the waste liquid discharge pipe (7) is flush with the top of the partition plate (9), and the waste liquid discharge pipe (7) is provided with an electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213671.8A CN112212347A (en) | 2020-11-04 | 2020-11-04 | Laboratory hazardous waste cooperative treatment system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011213671.8A CN112212347A (en) | 2020-11-04 | 2020-11-04 | Laboratory hazardous waste cooperative treatment system and method |
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| CN109453642A (en) * | 2018-10-24 | 2019-03-12 | 东莞理工学院 | Chemical laboratory rubbish processing to be harmless system |
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| CN110360575A (en) * | 2019-08-12 | 2019-10-22 | 台州市德长环保有限公司 | A kind of incineration system at dangerous waste disposition center |
| CN110410804A (en) * | 2019-07-09 | 2019-11-05 | 四川明月环保科技有限公司 | A kind of organic wastewater atomization incinerator and incinerating method |
| CN210675167U (en) * | 2019-07-15 | 2020-06-05 | 江苏新梦想生态环境建设股份有限公司 | Zelkova serrata cuttage agent reaction unit that takes root of growing seedlings |
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- 2020-11-04 CN CN202011213671.8A patent/CN112212347A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109453642A (en) * | 2018-10-24 | 2019-03-12 | 东莞理工学院 | Chemical laboratory rubbish processing to be harmless system |
| CN109604305A (en) * | 2018-12-05 | 2019-04-12 | 湖南科谷环保科技有限公司 | A kind of component compounding preprocess method of organic solid waste pyrolysis processing |
| CN110410804A (en) * | 2019-07-09 | 2019-11-05 | 四川明月环保科技有限公司 | A kind of organic wastewater atomization incinerator and incinerating method |
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