CN109453642A - Chemical laboratory rubbish processing to be harmless system - Google Patents

Chemical laboratory rubbish processing to be harmless system Download PDF

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Publication number
CN109453642A
CN109453642A CN201811244620.4A CN201811244620A CN109453642A CN 109453642 A CN109453642 A CN 109453642A CN 201811244620 A CN201811244620 A CN 201811244620A CN 109453642 A CN109453642 A CN 109453642A
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China
Prior art keywords
flue gas
chemical laboratory
rotary kiln
waste
spray gun
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CN201811244620.4A
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Chinese (zh)
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徐红娇
黄楚刁
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Dongguan University of Technology
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Dongguan University of Technology
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Priority to CN201811244620.4A priority Critical patent/CN109453642A/en
Publication of CN109453642A publication Critical patent/CN109453642A/en
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    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • 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
    • 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
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • B01D53/10—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/40—Acidic components
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/64—Heavy metals or compounds thereof, e.g. mercury
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B01D53/70—Organic halogen compounds
    • 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
    • F22B1/1807—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 using the exhaust gases of combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/06—Mechanically-operated devices, e.g. clinker pushers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • 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
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to chemical laboratory rubbish processing to be harmless systems, including turning round incineration system, afterheat utilizing system and smoke processing system, chemical laboratory solid refuse to be processed is sent into rotary kiln front end by feed system, chemical laboratory waste liquid is sprayed by rotary kiln front end, generated flue gas enters secondary burner, burning is mixed with air in secondary burner, the flue gas of generation enters afterheat utilizing system after being passed through the pre- dedusting of cyclone separator, recycling steam is generated while afterheat utilizing system is to flue gas cool-down, after the flue gas of cooling enters smoke processing system to flue gas progress depickling processing and being dusted, it is discharged by chimney, the present invention passes through above-mentioned processing, the solid refuse of chemical laboratory can not only be handled, the liquid refuse of chemical laboratory can also be handled, it realizes to chemical real Test the integrated treatment of room rubbish, additionally it is possible to handle the flue gas generated is burned, prevent the generation of secondary pollution.

Description

Chemical laboratory rubbish processing to be harmless system
Technical field
The present invention relates to offal treatment fields, in particular to chemical laboratory rubbish processing to be harmless system.
Background technique
Chemically experimental waste liquid source mainly has: extra sample, standard curve, sample analysis raffinate, failure storage Liquid and washing lotion, a large amount of washing waters, such as various acid-base waste fluids, fluorine-containing waste liquid, heavy metal waste liquid are made in experiment molten with organic reagent When agent, the amount of generally requiring is very big, therefore its discharge amount is also very considerable, general waste water be then mainly derived from instrument clean water, The cleaning in laboratory water and the slurry largely used etc., if cannot these waste liquids be carried out with appropriate processing, It will generate greatly undesirable influence to the environment of surrounding, or even can injure other biological and the life of people.
Solid waste caused by laboratory includes remaining solid reagent, unwanted solid reagent, precipitating flocculation reaction institute Precipitating residue, consumption and the experimental article of breakage (e.g., glassware, packaging material etc.) of generation, remaining or what is failed consolidates Body chemical reagent；In addition, also having the Office Consumables of paper etc. and the common filter paper in laboratory etc., the waste of these solids has Complicated composition, especially some expired failure chemical agents, if these solid waste are random larger to the harm of environment Discharge, once be mixed into residential environments, can living environment to resident and life and health cause grave danger.
Summary of the invention
The chemical laboratory rubbish processing to be harmless system proposed the purpose of the present invention is to solve background technique, place Reason system should include revolution incineration system, afterheat utilizing system and smoke processing system, chemical laboratory solid refuse to be processed It is sent into rotary kiln front end by feed system, chemical laboratory waste liquid is sprayed by rotary kiln front end, and generated flue gas enters two Secondary burner, mixes with air burning in secondary burner, and the flue gas of generation is passed through after the pre- dedusting of cyclone separator more than Heat utilization system, generates recycling steam while afterheat utilizing system is to flue gas cool-down, the flue gas of cooling enters flue gas After processing system carries out depickling processing and be dusted to flue gas, discharged by chimney, the present invention is by above-mentioned processing, no The solid refuse of chemical laboratory can only be handled, additionally it is possible to the liquid refuse of chemical laboratory is handled, it is real Now to the integrated treatment of chemical laboratory waste, additionally it is possible to handle the flue gas generated is burned, prevent secondary pollution It generates, has a good application prospect.
To achieve the goals above, present invention employs following technical solutions:
Chemical laboratory rubbish processing to be harmless system, the processing system include revolution incineration system, afterheat utilizing system and Smoke processing system；Turning round incineration system includes feed system, rotary kiln, secondary burner and combustion-supporting system, chemistry to be processed Solid laboratory rubbish is sent into rotary kiln front end by feed system, and chemical laboratory waste liquid is sprayed by rotary kiln front end, lime-ash It is discharged by rotary kiln, generated flue gas enters secondary burner, mixes in secondary burner with secondary combustion air It burns, the flue gas for generation of burning in secondary burner enters afterheat utilizing system, waste heat benefit after being passed through the pre- dedusting of cyclone separator Steam is generated while with system to flue gas cool-down, steam is discharged into vapor can from waste heat boiler and stores, through UTILIZATION OF VESIDUAL HEAT IN The flue gas of system cooling enters flue gas purification system, and flue gas purification system carries out dry type depickling processing to flue gas and is dusted Afterwards, it is discharged by chimney.
As further restriction of the invention, revolution incineration system further includes bucket type feeder, hopper, pusher, gives up Liquid feed pump, liquid waste spray gun, mucking machine, slag extractor, the first air blower and the second air blower, pusher and liquid waste spray gun are set to Rotary kiln front end, mucking machine, slag extractor are respectively arranged at rotary kiln and secondary burner tail end；Combustion-supporting system include fuel reserve tank, Oil feed pump and burner；Chemical laboratory solid refuse is sent into material pond by forklift, and bucket type feeder passes through solid refuse Hopper is delivered to pusher front end, and solid refuse is pushed into rotary kiln front end by pusher；Chemical laboratory waste liquid leads to after filtering It crosses waste liquid feed pump and is sent to liquid waste spray gun, liquid waste spray gun will spray into rotary kiln front end, the filter of filtering through spray gun after Waste liquid atomization Object is sent as solid dangerous waste material to waste storage library out, is sent into rotary kiln and is carried out together with chemical laboratory solid refuse Burning disposal, the clinker of rotary kiln drops down onto mucking machine by gravity, and transports outward through slag conveying machine, the clinker of secondary burner according to Slag extractor is dropped down by gravity, and is transported outward through slag conveying machine.
Wherein, treated waste enters rotary kiln front end, and high concentration chemistry laboratory waste liquid is sprayed by atomizer and turned round Kiln front end, rotary kiln front end are equipped with burner and the first air blower, and treated waste is constantly rolled with the rotation of rotary kiln, with The air of first air blower input is sufficiently mixed, and rapidly by dry and ignition, is burnt by the calorific value of waste itself；Working as When the calorific value of the mixes solid waste recycling in laboratory is lower, waste oil spray gun auxiliary combustion can be opened until after-flame, burns generation Flue gas enters secondary burner；The clinker of rotary kiln combustion after-flame drops down onto slag extractor by gravity, and transports outward through slag conveying machine；Two Burner and the second air blower are equipped in secondary burner, not sufficiently combusted gas enters in secondary burner in rotary kiln It burns away.
To the solid refuse for burning chemical laboratory, secondary burner must be controlled in higher ignition temperature (>=1100 DEG C), hazardous waste residence time 30min~2h, and it is greater than the gas residence time of 2s at this temperature, make toxic in flue gas to have Evil substance and dioxin destroy by fire；The flue gas that dual firing chamber's burning generates enters waste heat boiler after carrying out pre- dedusting.
Therefore, it as further restriction of the invention, controls ignition temperature in secondary burner and is kept for 1100 DEG C or more, Residence time 30min~2h, and gas residence time is set greater than 2s, remove smoke middle poisonous and harmful substance and dioxin.
As further restriction of the invention, afterheat utilizing system includes waste heat boiler, tap water supply pipe, softened water Case, deoxygenation water pump, oxygen-eliminating device, water pump, ammonia tank, pressure reducing valve, spray gun, slag extractor and vapor can；Wherein, tap water supply pipe, Softening water tank, deoxygenation water pump, oxygen-eliminating device and water pump are sequentially connected by pipeline, ammonia tank, pressure reducing valve and spray gun by pipeline according to Secondary connection, tap water by softening water tank and deoxygenation water pump, oxygen-eliminating device carries out softening to tap water and deoxygenation is handled, in ammonia tank Liquid ammonia by forming gaseous state ammonia after pressure reducing valve, gaseous state ammonia is sent into waste heat boiler by spray gun, in waste heat boiler Flue gas carries out denitration process；Enter in vapor can by the hot steam that waste heat boiler generates and store, is steamed for chemical laboratory Vapour.
As further restriction of the invention, smoke processing system includes cooling tower, water tank, spray head, slag extractor, lime Storage tank, lime spray gun, active carbon storage tank and active carbon spray gun, water tank are connect to cooling tower top with spray head by pipeline and are passed through hydrogen Sodium hydroxide solution, heat boiler outlet flue gas enters cooling tower, in cooling tower, burns high-temperature flue gas and the atomization cooling of generation Water contact, cools down high-temperature flue gas, and the clinker of cooling tower drops down onto slag extractor by gravity, and transports outward through slag conveying machine； Lime storage tank connects lime spray gun by air-transport system, and lime is sprayed into flue, and the acidic materials in flue gas are neutralized And remove it from flue gas, meanwhile, active carbon storage tank connects active carbon spray gun by air-transport system, sprays into flue Active carbon, by flue gas heavy metal and dioxin substance adsorbed and remove it from flue gas, the dust bedding bag of entrainment The blocking of formula deduster solidifies landfill after falling into ash cellar outlet.
Limited as of the invention further, smoke processing system further include bag filter, slag extractor, air-introduced machine, Spray column, circulatory pool, circulating pump, sedimentation basin and smoke re-heater；Bag filter, air-introduced machine, spray column and smoke re-heater It is sequentially connected by pipeline；By lime, active carbon, treated that flue gas enters bag filter, to the suspended particulate in flue gas Object is collected by filter bag, is fallen off from filter bag together under the action of pulse dust cleaning, and discharge solidification is filled out in the form of flying dust It buries；Flue gas is drawn by air-introduced machine to spray column after dedusting and depickling processing, carries out washing depickling to flue gas in spray column Processing, the flue gas after washing depickling heat flue gas by smoke re-heater, and the flue gas after heating passes through smoke stack emission.
Heat boiler outlet flue gas enters cooling tower, in cooling tower, burns the high-temperature flue gas and atomization cooling water of generation It directly contacts, flue gas is down to 200 DEG C by 500 DEG C rapidly within the 1s time, two uh English in flue gas can effectively be avoided to synthesize again； A small amount of dust in the flue gas of flue gas removal simultaneously；It is de- to carry out flue gas before entering sack cleaner respectively for cooling tower exiting flue gas Acid and removing heavy metal, dioxin processing；First by spraying lime into flue, by the acidic materials (SO in flue gas2、 HC1 it) being neutralized, removes it from flue gas, outlet solidification fills after entrainment dust falls into ash cellar by sack cleaner blocking, But such dry-process deacidification system efficiency is lower, SO2Removal efficiency is not higher than 80% not higher than 75%, HC1 removal efficiency；Backward flue Middle injection active carbon, by flue gas heavy metal and two uh English adsorb, remove it from flue gas, the dust bedding bag of entrainment The blocking of formula deduster solidifies landfill after falling into ash cellar outlet；Flue gas enters bag filter, the suspension in deduster, in flue gas Particulate matter is intercepted by filter bag, is fallen off from filter bag together under the action of pulse dust cleaning, is discharged in the form of flying dust solid Change landfill；Flue gas is drawn by air-introduced machine to spray column after dedusting and preliminary depickling, the effect sprayed through two-stage in spray column Under, washing flue gas carries out further depickling processing, it is ensured that tail gas qualified discharge, wet type deacidification technique efficiency is higher, SO2Removing Rate, which reaches 95%, HCI removal efficiency, can reach 95%.
As further restriction of the invention, spray head is atomizer, and the atomizer is atomized using compressed air Dual-flow atomizer, atomizing particle size within 100um, atomization angle control at 15~30 °, keep waste water rapid in high-temperature area Atomization.
As further restriction of the invention, the junction of the first, second burner of secondary burner uses labyrinth Formula sealing device, and it is external using scale compacting, it is ensured that for rotary kiln air leakage coefficient less than 1%, rotary kiln protrudes into the area of secondary burner Domain uses heat-resisting steel construction, and air-cooler is arranged advertises cold wind to the kiln tail for protruding into secondary burner and carry out pressure cooling.
The beneficial effects of the present invention are:
1, the present invention can will will be passed through by setting waste liquid feed pump and liquid waste spray gun using the pressure of waste drains pump after Waste liquid atomization Spray gun sprays into rotary kiln front end, carries out burning disposal to waste liquid, effectively solves the cost that tradition generates the chemical treatment of waste liquid High and process complexity problem.
2, by spraying into softening into waste heat boiler, after deoxygenation from back and forth and ammonia, can be to the cigarette in waste heat boiler Gas carries out denitration process, meanwhile, lime is sprayed into the flue gas through cooling tower cooler and active carbon can be to the acid in flue gas Matter and dioxin are effectively removed.
3, by spraying into sodium hydroxide solution into cooling tower, lime and activity are sprayed into the flue gas through cooling tower cooler Charcoal finally carries out washing depickling processing to flue gas in spray column, can effectively remove the acidic materials and dioxin in flue gas Equal substances.
Detailed description of the invention
Fig. 1 is the schematic diagram of chemical laboratory rubbish processing to be harmless system proposed by the present invention.
Fig. 2 is the schematic diagram of smoke processing system in chemical laboratory rubbish processing to be harmless system proposed by the present invention.
Specific embodiment
It is next combined with specific embodiments below that the present invention is further described.
Embodiment one
Referring to Fig.1, chemical laboratory rubbish processing to be harmless system, the system include revolution incineration system, afterheat utilizing system And smoke processing system；Turning round incineration system includes feed system, rotary kiln, secondary burner and combustion-supporting system, to be processedization It learns solid laboratory rubbish and rotary kiln front end is sent by feed system, chemical laboratory waste liquid is sprayed by rotary kiln front end, ash Slag is discharged by rotary kiln, and generated flue gas enters secondary burner, mixed with secondary combustion air in secondary burner Combination burning, the flue gas for generation of burning in secondary burner enter afterheat utilizing system, waste heat after being passed through the pre- dedusting of cyclone separator Steam is generated while using system to flue gas cool-down, steam is discharged into vapor can from waste heat boiler and stores, through waste heat benefit Enter flue gas purification system with the flue gas that system cools down, flue gas purification system carries out dry type depickling processing to flue gas and is dusted Afterwards, it is discharged by chimney.
Wherein, revolution incineration system further includes bucket type feeder, hopper, pusher, waste liquid feed pump, liquid waste spray gun, goes out Slag machine, slag extractor, the first air blower and the second air blower, pusher and liquid waste spray gun are set to rotary kiln front end, mucking machine, row Slag machine is respectively arranged at rotary kiln and secondary burner tail end；Combustion-supporting system includes fuel reserve tank, oil feed pump and burner；It is chemical real Room solid refuse to be tested to be sent into material pond by forklift, solid refuse is delivered to pusher front end by hopper by bucket type feeder, Solid refuse is pushed into rotary kiln front end by pusher；Chemical laboratory waste liquid passes through waste liquid feed pump after filtering and is sent to waste liquid Spray gun, liquid waste spray gun will spray into rotary kiln front end through spray gun after Waste liquid atomization, and the much filtrate of filtering is sent as solid dangerous waste material To waste storage library, it is sent into rotary kiln together with chemical laboratory solid refuse and carries out burning disposal, the clinker of rotary kiln Mucking machine is dropped down by gravity, and is transported outward through slag conveying machine, the clinker of secondary burner drops down onto slag extractor by gravity, and passes through Slag conveying machine outward transport.
Wherein, the junction of the first, second burner of secondary burner uses labyrinth-type excluder, and external use Scale is suppressed to reduce the air leakage coefficient of rotary kiln, and rotary kiln protrudes into the region of secondary burner using heat-resisting steel construction, and sets It sets air-cooler cold wind is advertised to the kiln tail for protruding into secondary burner and carry out pressure cooling.
Wherein, it controls ignition temperature in secondary burner and is kept for 1100 DEG C or more, residence time 30min~2h, and be arranged Gas residence time is greater than 2s, and remove smoke middle poisonous and harmful substance and dioxin.
Wherein, afterheat utilizing system include waste heat boiler, tap water supply pipe, softening water tank, deoxygenation water pump, oxygen-eliminating device, Water pump, ammonia tank, pressure reducing valve, spray gun, slag extractor and vapor can；Wherein, tap water supply pipe, softening water tank, deoxygenation water pump, remove Oxygen device and water pump are sequentially connected by pipeline, and ammonia tank, pressure reducing valve and spray gun are sequentially connected by pipeline, and tap water passes through softening Water tank and deoxygenation water pump, oxygen-eliminating device carries out softening to tap water and deoxygenation is handled, and the liquid ammonia in ammonia tank passes through after pressure reducing valve Gaseous state ammonia is formed, gaseous state ammonia is sent into waste heat boiler by spray gun, carries out denitration process to the flue gas in waste heat boiler；By The hot steam that waste heat boiler generates, which enters in vapor can, to be stored, for chemical laboratory steam.
Referring to fig. 2, chemical laboratory rubbish processing to be harmless system of the invention is additionally provided with smoke processing system, flue gas Processing system specifically includes: cooling tower, water tank, spray head, slag extractor, lime storage tank, lime spray gun, active carbon storage tank and active carbon Spray gun, water tank are connect to cooling tower top with spray head by pipeline and are passed through sodium hydroxide solution, and heat boiler outlet flue gas enters Cooling tower burns high-temperature flue gas and the atomization cooling water contact of generation, cools down to high-temperature flue gas in cooling tower, cooling The clinker of tower drops down onto slag extractor by gravity, and transports outward through slag conveying machine；Lime storage tank connects stone by air-transport system Grey spray gun, lime is sprayed into flue, and the acidic materials in flue gas are neutralized and remove it from flue gas, meanwhile, active carbon Storage tank connects active carbon spray gun by air-transport system, and active carbon is sprayed into flue, and the heavy metal and two in flue gas is disliked English substance is adsorbed and removes it from flue gas.
Embodiment two
As the further improvement of embodiment one, smoke processing system of the invention is additionally provided with bag filter, slag extractor, draws Blower, spray column, circulatory pool, circulating pump, sedimentation basin and smoke re-heater；Bag filter, air-introduced machine, spray column and flue gas are again Hot device is sequentially connected by pipeline；By lime, active carbon, treated that flue gas enters bag filter, to the suspension in flue gas Particulate matter is collected by filter bag, is fallen off from filter bag together under the action of pulse dust cleaning, is discharged in the form of flying dust solid Change landfill；Flue gas is drawn by air-introduced machine to spray column after dedusting and depickling processing, is washed in spray column to flue gas Depickling processing, the flue gas after washing depickling heat flue gas by smoke re-heater, and the flue gas after heating is arranged by chimney It puts.
Wherein, spray head is atomizer, and the atomizer uses the dual-flow atomizer of compressed air atomization, is atomized grain Within 100um, atomization angle is controlled at 15~30 ° diameter, is atomized waste water rapidly in high-temperature area.
For the present invention by the way that chemical laboratory solid refuse to be processed is sent into rotary kiln front end by feed system, chemistry is real It tests room waste liquid to be sprayed by rotary kiln front end, generated flue gas enters secondary burner, mixes with air in secondary burner Burning, the flue gas of generation enter afterheat utilizing system after being passed through the pre- dedusting of cyclone separator, and afterheat utilizing system is to flue gas cool-down While generate recycling steam, the flue gas of cooling, which enters smoke processing system, to carry out depickling processing to flue gas and removes After dirt, discharged by chimney, the present invention by above-mentioned processing, can not only be to the solid refuse of chemical laboratory at Reason, additionally it is possible to the liquid refuse of chemical laboratory be handled, realize the integrated treatment to chemical laboratory rubbish, additionally it is possible to It handles the flue gas generated is burned, prevents the generation of secondary pollution, have a good application prospect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (8)

1. chemical laboratory rubbish processing to be harmless system, it is characterised in that: the processing system includes revolution incineration system, remaining Heat utilization system and smoke processing system；Turning round incineration system includes feed system, rotary kiln, secondary burner and combustion-supporting system System, chemical laboratory solid refuse to be processed are sent into rotary kiln front end by feed system, and chemical laboratory waste liquid is by rotary kiln Front end sprays into, and lime-ash is discharged by rotary kiln, and generated flue gas enters secondary burner, in secondary burner with it is secondary Combustion air is mixed and burned, and the flue gas for generation of burning in secondary burner enters UTILIZATION OF VESIDUAL HEAT IN after being passed through the pre- dedusting of cyclone separator System generates steam while afterheat utilizing system is to flue gas cool-down, steam is discharged into vapor can from waste heat boiler and stores, The flue gas to cool down through afterheat utilizing system enters flue gas purification system, and flue gas purification system carries out dry type depickling processing simultaneously to flue gas After being dusted, discharged by chimney.
2. chemical laboratory rubbish processing to be harmless system according to claim 1, it is characterised in that: the revolution is burned System further includes bucket type feeder, hopper, pusher, waste liquid feed pump, liquid waste spray gun, mucking machine, slag extractor, the first air blower With the second air blower, pusher and liquid waste spray gun are set to rotary kiln front end, mucking machine, slag extractor be respectively arranged at rotary kiln and Secondary burner tail end；Combustion-supporting system includes fuel reserve tank, oil feed pump and burner；Chemical laboratory solid refuse is sent by forklift Enter in material pond, solid refuse is delivered to pusher front end by hopper by bucket type feeder, and solid refuse is pushed into back by pusher Rotary kiln front end；Chemical laboratory waste liquid passes through waste liquid feed pump after filtering and is sent to liquid waste spray gun, and liquid waste spray gun is by waste liquid mist Rotary kiln front end is sprayed into through spray gun after change, the much filtrate of filtering is sent as solid dangerous waste material to waste storage library, with chemistry Solid laboratory rubbish, which is sent into together in rotary kiln, carries out burning disposal, and the clinker of rotary kiln drops down onto mucking machine by gravity, and It is transported outward through slag conveying machine, the clinker of secondary burner drops down onto slag extractor by gravity, and transports outward through slag conveying machine.
3. chemical laboratory rubbish processing to be harmless system according to claim 2, it is characterised in that: control second-time burning Ignition temperature is kept for 1100 DEG C or more, residence time 30min~2h in device, and gas residence time is arranged greater than 2s, eliminates cigarette Poisonous and harmful substance and dioxin in gas.
4. chemical laboratory rubbish processing to be harmless system according to claim 1, it is characterised in that: the UTILIZATION OF VESIDUAL HEAT IN System includes waste heat boiler, tap water supply pipe, softening water tank, deoxygenation water pump, oxygen-eliminating device, water pump, ammonia tank, pressure reducing valve, spray Rifle, slag extractor and vapor can；Wherein, tap water supply pipe, softening water tank, deoxygenation water pump, oxygen-eliminating device and water pump by pipeline according to Secondary connection, ammonia tank, pressure reducing valve and spray gun are sequentially connected by pipeline, and tap water passes through softening water tank and deoxygenation water pump, deoxygenation Device carries out softening to tap water and deoxygenation is handled, and the liquid ammonia in ammonia tank is by forming gaseous state ammonia, gaseous ammonia after pressure reducing valve Gas is sent into waste heat boiler by spray gun, carries out denitration process to the flue gas in waste heat boiler；It is steamed by the heat that waste heat boiler generates Vapour, which enters in vapor can, to be stored, for chemical laboratory steam.
5. chemical laboratory rubbish processing to be harmless system according to claim 1, it is characterised in that: the fume treatment System includes cooling tower, water tank, spray head, slag extractor, lime storage tank, lime spray gun, active carbon storage tank and active carbon spray gun, water tank It being connect with spray head to cooling tower top by pipeline and is passed through sodium hydroxide solution, heat boiler outlet flue gas enters cooling tower, In cooling tower, burn high-temperature flue gas and the atomization cooling water contact of generation, high-temperature flue gas cooled down, the clinker of cooling tower according to Slag extractor is dropped down by gravity, and is transported outward through slag conveying machine；Lime storage tank connects lime spray gun by air-transport system, to cigarette Lime is sprayed in road, and the acidic materials in flue gas are neutralized and removes it from flue gas, meanwhile, active carbon storage tank passes through strength Transportation system connect active carbon spray gun, active carbon is sprayed into flue, by flue gas heavy metal and dioxin substance inhale Attached and remove it from flue gas, the dust of entrainment is fallen into after ash cellar outlet to solidify by sack cleaner blocking to be filled.
6. chemical laboratory rubbish processing to be harmless system according to claim 5, it is characterised in that: the fume treatment System further includes bag filter, slag extractor, air-introduced machine, spray column, circulatory pool, circulating pump, sedimentation basin and smoke re-heater；Cloth Bag dust collector, air-introduced machine, spray column and smoke re-heater are sequentially connected by pipeline；By lime, active carbon treated cigarette Gas enters bag filter, is collected to the suspended particulate substance in flue gas by filter bag, under the action of pulse dust cleaning together It falls off from filter bag, the discharge solidification landfill in the form of flying dust；Flue gas is drawn by air-introduced machine to spray after dedusting and depickling processing It drenches in tower, washing depickling processing is carried out to flue gas in spray column, the flue gas after washing depickling is by smoke re-heater to flue gas It is heated, the flue gas after heating passes through smoke stack emission.
7. chemical laboratory rubbish processing to be harmless system according to claim 5, it is characterised in that: the spray head is mist Change spray head, the atomizer uses the dual-flow atomizer of compressed air atomization, and atomizing particle size is within 100um, atomizing angle Degree control is atomized waste water rapidly in high-temperature area at 15~30 °.
8. chemical laboratory rubbish processing to be harmless system according to claim 2, it is characterised in that: the second-time burning The junction of first, second burner of device uses labyrinth-type excluder, and outside uses scale compacting to reduce rotary kiln Air leakage coefficient, rotary kiln protrudes into the region of secondary burner using heat-resisting steel construction, and air-cooler is arranged to protruding into secondary combustion The kiln tail of burner advertises cold wind and carries out pressure cooling.
CN201811244620.4A 2018-10-24 2018-10-24 Chemical laboratory rubbish processing to be harmless system Pending CN109453642A (en)

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CN112212347A (en) * 2020-11-04 2021-01-12 大江环境股份有限公司 Laboratory hazardous waste cooperative treatment system and method
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CN204421590U (en) * 2015-01-24 2015-06-24 四川九天建设工程有限公司 A kind of rotary kiln Novel kiln head labyrinth gland
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CN112212347A (en) * 2020-11-04 2021-01-12 大江环境股份有限公司 Laboratory hazardous waste cooperative treatment system and method
CN113847601A (en) * 2021-09-28 2021-12-28 山西华仕集团股份有限公司 Hazardous waste treatment system

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Application publication date: 20190312