CN110081445A - A kind of liquid hazardous waste burn system and its burning process - Google Patents
A kind of liquid hazardous waste burn system and its burning process Download PDFInfo
- Publication number
- CN110081445A CN110081445A CN201910451976.3A CN201910451976A CN110081445A CN 110081445 A CN110081445 A CN 110081445A CN 201910451976 A CN201910451976 A CN 201910451976A CN 110081445 A CN110081445 A CN 110081445A
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- China
- Prior art keywords
- tower
- flue gas
- waste
- liquid
- bag filter
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title description 3
- 239000003546 flue gas Substances 0.000 claims abstract description 93
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000002918 waste heat Substances 0.000 claims abstract description 43
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 239000007789 gas Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 238000004056 waste incineration Methods 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 30
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 26
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 24
- 230000003472 neutralizing effect Effects 0.000 claims description 24
- 239000000908 ammonium hydroxide Substances 0.000 claims description 23
- 238000005554 pickling Methods 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 235000019504 cigarettes Nutrition 0.000 claims description 17
- 239000010808 liquid waste Substances 0.000 claims description 17
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 17
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 238000006392 deoxygenation reaction Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- DWNBOPVKNPVNQG-LURJTMIESA-N (2s)-4-hydroxy-2-(propylamino)butanoic acid Chemical compound CCCN[C@H](C(O)=O)CCO DWNBOPVKNPVNQG-LURJTMIESA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/48—Preventing corrosion
-
- 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
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- 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
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- 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
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- 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
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to incineration of waste technical field, in particular to a kind of liquid hazardous waste burn system, including burn unit, gas cleaning unit and flue gas emission unit.Burning unit includes surge tank group, incinerator, waste heat boiler and blowdown drum, and gas cleaning unit includes chilling tower, dry type reaction tower and bag filter I, and flue gas emission unit includes out of stock reactor and chimney；A kind of liquid dangerous waste incineration technique is further related to, burning phase, waste heat temperature-fall period, gas cleaning stage and flue gas emission stage are included the next steps.Waste liquid is heated to high-temperature evaporation using vertical incinerator by the present invention, the recycle heat in flue gas is collected using waste heat boiler to use, the equipment such as chilling tower, dry type reaction tower, the bag filter then passed through in gas cleaning unit gradually carry out the purification process of system to flue gas again and again, the harmful substance in flue gas can effectively be removed, the flue gas being most discharged afterwards through chimney is up to state standards, environmental protection and energy saving, application prospect are wider.
Description
Technical field
The invention belongs to incineration of waste technical field, relates in particular to a kind of liquid hazardous waste burn system and its burn
Firing technique.
Background technique
Dangerous liquid wastes are primarily referred to as harmful liquid debris, and spent acid, salkali waste including high concentration liquid etc. have
The one or several kinds hazard property such as corrosivity, toxicity, inflammability, reactivity or infectivity.Water resource makes in use
It loses original rich in solid pollutant, aerobic pollution, nutrient pollutant, soda acid pollutant, toxic pollutant etc.
Some use value, arbitrarily discharge will cause significant damage, can also become dangerous liquid wastes.If these liquid dangers are straight
Run in and put and can cause adverse effect to environment or human health, so the processing before the discharge of liquid danger is most important.
Summary of the invention
For various deficiencies of the prior art, inventor's researching and designing in long-term practice goes out a kind of liquid hazardous waste and burns
Burning system and its burning process, are then exhausted from after liquid danger being purified, and energy conservation and environmental protection improves Business Economic Benefit.
To achieve the above object, it the invention provides the following technical scheme: a kind of liquid hazardous waste burn system, including burns
Burn unit, gas cleaning unit and flue gas emission unit.Gas cleaning unit one end with burn unit be connected, the other end and
Flue gas emission unit is connected；The burning unit includes surge tank group, incinerator, waste heat boiler and blowdown drum；Incinerator top
Equipped with spray gun group, incinerator side is equipped with heat exchanger and adjusts air blower；The heat exchanger connects a heat-exchange fan；
Be equipped with steam at the top of the waste heat boiler and collect tank, steam collects tank top equipped with gas-distributing cylinder, gas-distributing cylinder and steam collect tank it
Between be equipped with white cigarette heater I；Waste heat boiler side is equipped with denitration spray gun, and denitration spray gun connects a denitration liquid storage tank；The flue gas
Clean unit includes chilling tower, dry type reaction tower and bag filter I, and chilling tower import connects waste heat boiler, and outlet connection dry type is anti-
Answer tower import, dry type reaction tower outlet connection bag filter I import；The outlet the bag filter I connection pickling tower import, pickling tower go out
Mouth connection neutralizing tower import, neutralizing tower outlet connection bag filter II import；White cigarette is equipped between the neutralizing tower and bag filter II
Heater II；The flue gas emission unit includes out of stock reactor and chimney, and Benitration reactor entrance is connected with ammonium hydroxide evaporation
Tank, out of stock reactor outlet are connected with chimney.
Further, the surge tank group includes that low heat value waste liquid surge tank, middle calorific value waste liquid surge tank and high heating value are useless
Liquid surge tank；The spray gun group includes low heat value liquid waste spray gun, middle calorific value liquid waste spray gun and high heating value liquid waste spray gun.
Further, it is additionally provided with combustion-supporting oily storage device by the incinerator, passes through the combustion-supporting oil being mounted on incinerator
Spray gun connects incinerator；The incinerator lower part is additionally provided with incinerator flashback tank.
Further, the gas-distributing cylinder connection softening water tank and deoxygenation cabinet；Steaming is additionally provided between gas-distributing cylinder and softening water tank
Vapour condenser；Waste heat boiler flashback tank is equipped with below the waste heat boiler.
Further, chilling tower side is equipped with water fog spraying gun, and water fog spraying gun lower end is connected with spray gun cooling blower；Institute
It states dry type reaction tower two sides and sodium bicarbonate warehouse and active carbon warehouse is connected by pipeline respectively；The bottom the bag filter I connects spiral shell
Conveyer I is revolved, the lower end bag filter II connects screw conveyor II；The import of the neutralizing tower connects sodium hydroxide tank；The cigarette
Gas clean unit is additionally provided with several ash collection devices.
Further, air-introduced machine is equipped between the Benitration reactor and bag filter II；Ammonium hydroxide evaporator side is set
Have ammonia water tank, by ammonium hydroxide delivery pump to conveying ammonium hydroxide in ammonium hydroxide evaporator, ammonium hydroxide evaporator is also connected with electric heater, electricity plus
Hot device is connected with a heating blower.
The present invention also provides a kind of liquid dangerous waste incineration techniques, include the next steps:
S1, burning phase: waste liquid being sprayed into vertical incinerator by liquid waste spray gun and is burned, and generates flue gas；
S2, waste heat temperature-fall period: the flue gas come out from incinerator, which enters in waste heat boiler, to cool down；
S3, gas cleaning stage: the flue gas come out from waste heat boiler enters the cooling of chilling tower, and dry type is entered after chilling tower
Reaction tower enters dedusting in bag filter I after dry type reaction tower, and the preliminary depickling of pickling tower, preliminary depickling are entered after bag filter I
Flue gas afterwards enters the further depickling of neutralizing tower, and flue gas enters bag filter II progress dedusting again after neutralized tower；
S4: the flue gas emission stage: from bag filter II come out flue gas enter Benitration reactor carry out it is out of stock, then pass through cigarette
Chimney discharge.
Further, when burning in the step S1, incineration temperature is 1000 degrees Celsius, when waste liquid stops in incinerator
Between be greater than 2 seconds.
Further, in the step S2, flue gas enters the first backhaul chamber in waste heat boiler, and flue-gas temperature is down to
It 950 degrees Celsius, enters back into the second backhaul chamber temp and is down to 500 degrees Celsius.
Further, flue gas enters chilling tower in the step S3, and penetrating clear water is by flue gas in 1 second in chilling tower
It is cooled to 200 degrees Celsius；Flue gas enters forecooler after bag filter I dedusting and tentatively cools down in the step S3, subsequently into
Pickling tower carries out preliminary depickling, and flue-gas temperature is down to 75 degrees Celsius in pickling tower, from pickling tower come out after flue gas enter
And tower, the sodium hydroxide solution that 20% is sprayed into neutralizing tower are reacted with the sour gas in flue gas, the cigarette come out from neutralizing tower
Gas first passes through demister demisting, and bag filter II dedusting again is entered after being heated to 190 degrees Celsius using white cigarette heater.
The beneficial effects of the present invention are:
(1) it using the combination for burning unit, gas cleaning unit and flue gas emission unit, and is collected using waste heat boiler
Other ancillary equipments in the heat feed system that waste liquid generates are burned, while using white cigarette heater by flue gas to dew point,
Reduce corrosion to system equipment, not only can effective purifying waste danger improve the economic effect of enterprise there are also energy saving
Benefit.
(2) waste liquid is heated to by high-temperature evaporation using vertical incinerator, collects the heat in flue gas using waste heat boiler
It is recycled, then passes through the equipment such as chilling tower, dry type reaction tower, the bag filter in gas cleaning unit again and again gradually
The purification process that system is carried out to flue gas, can effectively remove the harmful substance in flue gas, and the flue gas being most discharged afterwards through chimney reaches
To national standard, environmental protection and energy saving, application prospect is wider.
Detailed description of the invention
Fig. 1 is the overall structure diagram of incineration system of the invention；
Fig. 2 is the schematic diagram of burning unit of the invention；
Fig. 3 is incinerator schematic diagram of the present invention；
Fig. 4 is incinerator partial enlarged view of the present invention；
Fig. 5 is waste heat boiler schematic diagram of the present invention；
Fig. 6 is waste heat boiler partial enlarged view of the present invention；
Fig. 7 is gas cleaning cell schematics of the present invention；
Fig. 8 is sodium bicarbonate warehouse schematic diagram of the present invention；
Fig. 9 is chilling tower schematic diagram of the present invention；
Figure 10 is flue gas emission cell schematics of the present invention.
In attached drawing: it is low that 10- burns unit, 20- gas cleaning unit, 30- flue gas emission unit, 11- surge tank group, 111-
Calorific value waste liquid surge tank, 113- high heating value waste liquid surge tank, 12- spray gun group, 121- low heat value in calorific value waste liquid surge tank, 112-
The combustion-supporting oily storage device of calorific value liquid waste spray gun, 123- high heating value liquid waste spray gun, 13-, the combustion-supporting oil spray of 131- in liquid waste spray gun, 122-
Rifle, 14- incinerator, 141- heat exchanger, 142- heat-exchange fan, 143- adjust air blower, 144- incinerator flashback tank,
15- waste heat boiler, 151- denitration spray gun, 1511- denitration liquid storage tank, 1512- denitration liquid pump, 152- steam collect tank, 153- point
Cylinder, 1531- softening water tank, 1532- deoxygenation cabinet, 1533- white cigarette heater I, 1534- steam condenser, 154- waste heat boiler
Flashback tank, 155- blowdown drum, 21- chilling tower, 211- water fog spraying gun, 212- spray gun cooling blower, 22- dry type reaction tower, 221-
Sodium bicarbonate warehouse, 222- sodium bicarbonate deduster, 223- sodium bicarbonate weighing apparatus, 224- sodium bicarbonate blower, 225- active carbon warehouse,
226- active carbon deduster, 227- active carbon weighing apparatus, 228- active carbon blower, 23- bag filter I, 231- screw conveyor I,
24- pickling tower, 241- sodium hydroxide tank, 25- neutralizing tower, 26- bag filter II, 261- screw conveyor II, 27- ash collection
Device, 31- air-introduced machine, the out of stock reactor of 32-, 33- ammonium hydroxide evaporator, 331- ammonia water tank, 332- ammonium hydroxide delivery pump, 333- electricity add
Hot device, 334- heating blower, 34- chimney.
Specific embodiment
It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention
Technical solution of the present invention carries out clear, complete description.Based on the embodiment in the application, those of ordinary skill in the art exist
Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application.
In addition, the direction word mentioned in following implementation, such as "upper" "lower" " left side " " right side " etc. are only the directions with reference to attached drawing, because
This, the direction word used is for illustrative and not limiting the invention.In addition, term " first ", " second ", " third " etc.
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.It is right
For those skilled in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The invention will be further described with preferred embodiment with reference to the accompanying drawing.
It is the overall schematic of liquid hazardous waste burn system of the invention referring to Fig. 1, which includes burning
Unit 10, gas cleaning unit 20 and flue gas emission unit 30.20 one end of gas cleaning unit is connected with unit 10 is burned, another
End is connected with flue gas emission unit 30.Danger to be burned, which first passes through, burns unit 10, using gas cleaning unit 20, last
Purified flue gas is discharged by flue gas emission unit 30.
Referring to fig. 2~Fig. 6, burning unit 10 includes surge tank group 11, incinerator 14 and waste heat boiler 15.Surge tank group 11
Including low heat value waste liquid surge tank 111, middle calorific value waste liquid surge tank 112 and high heating value waste liquid surge tank 113, three passes through pipe
The waste liquid of different temperatures is delivered to incinerator 14 by road.It burns unit 10 and is additionally provided with blowdown drum 155, collect and burn the production of unit 10
Raw impurity, and be periodically discharged.
Spray gun group 12 is equipped on 14 top of incinerator.Spray gun group 12 includes low heat value liquid waste spray gun 121, the spray of middle calorific value waste liquid
Rifle 122 and high heating value liquid waste spray gun 123, three will spray into incinerator 14 after the Waste liquid atomization of different temperatures respectively, useless in this way
Liquid can be sufficiently mixed with the air in incinerator, be burnt more thorough.Combustion-supporting oily storage device 13 is additionally provided with by incinerator 14, it is inner
Face natural gas-storing or fuel oil help fuel lance 131 to spray into incinerator by being mounted on incinerator 14.
Heat exchanger 141 is equipped with by incinerator 14, heat exchanger 141 connects heat-exchange fan 142.Heat-exchange fan
Air is sent to heat exchanger 141 and heats by 142, the air delivery after heating to incinerator 14, is that the waste liquid supplement heat in furnace is empty
Gas.It is additionally provided with by incinerator 14 and adjusts air blower 143, waste liquid can be made to burn according to the air pressure adjustment air quantity in incinerator
Burning has sufficient oxygen.
It is also connected with incinerator flashback tank 144 in the lower part of incinerator 14, collects waste liquid afterburnt production in incinerator
Raw recrement and ash, is periodically discharged after water quenching cooling.
Referring to fig. 2, the thermal energy that liquid waste incineration discharges is converted saturation or superheated steam by Fig. 5 and Fig. 6, waste heat boiler 15,
Its top is equipped with steam and collects tank 152.Steam collects tank 152 and collects steam, and steam is delivered to gas-distributing cylinder 153.Gas-distributing cylinder
153 are connected with softening water tank 1531 and deoxygenation cabinet 1532.In addition to softening water tank 1531 and deoxygenation cabinet 1532, gas-distributing cylinder 153 may be used also
To be connected to any technique ancillary equipment for having thermal demand.Gas-distributing cylinder 153 and steam collect be additionally provided between tank 152 it is white
Cigarette heater I 1533 can mitigate corrosion of the flue gas to pipeline on flue gas to dew point.Softening water tank 1531 be
System provides softened water, is drawn water, is sent at deoxygenation cabinet 1532 in water tank by water pump, prevents its fouling.In gas-distributing cylinder 153 and soft
Change and be additionally provided with steam condenser 1534 between water tank 1531, softening water tank can be conveyed to again by high-temperature steam reforming for condensed water
It uses, prevents softening water tank damaged due to high-temperature steam.Deoxygenation cabinet 1532 removes the oxygen in softened water, then is conveyed to waste heat
Boiler 153 can prevent equipment under high temperature from aoxidizing.
It is equipped with denitration spray gun 151 by waste heat boiler 15, is connected with denitration liquid storage tank 1511, passes through denitration liquid pump 1512
Denitration liquid is delivered to denitration spray gun 151.Denitration liquid generally uses ammonia, urea or hydrogen propylhomoserin to spray as reducing agent by denitration
Rifle 151 sprays into waste heat boiler, resolves into ammonia rapidly at high temperature, generates nitrogen and water with the reaction of nitrogen oxides in flue gas,
Effectively remove the nitrogen in flue gas.
It is equipped with waste heat boiler flashback tank 154 below waste heat boiler 15, collects waste liquid afterburnt production in waste heat boiler
Raw recrement and ash, is periodically discharged after water quenching cooling.
Referring to Fig. 7~Fig. 9, gas cleaning unit 20 includes chilling tower 21, dry type reaction tower 22 and bag filter I 23.Chilling
21 import of tower connects waste heat boiler 15, and outlet is connected with 22 import of dry type reaction tower.Dry type reaction tower 22 outlet by pipeline with
23 entrance of bag filter I is connected.
21 side of chilling tower is equipped with water fog spraying gun 211, by water fog spraying gun 211 to the water after atomization in chilling tower, with
High-temperature flue gas mixes in chilling tower 21, and flue-gas temperature is reduced rapidly.211 lower end of water fog spraying gun is connected with spray gun cooling blower
212, being blown into cooling wind to spray gun reduces spray gun temperature.
22 two sides of dry type reaction tower connect sodium bicarbonate warehouse 221 and active carbon warehouse 225, the two difference by pipeline respectively
Sodium bicarbonate and active carbon are conveyed to dry type reaction tower 22.Active carbon can adsorb the harmful substances such as heavy metal, dioxin in flue gas,
Sodium bicarbonate can react to form dust-like sodium salt with sour gas.Sodium bicarbonate deduster 222, bottom are equipped at the top of sodium bicarbonate warehouse 221
Portion be equipped with sodium bicarbonate weighing apparatus 223, by sodium bicarbonate weighing apparatus 223 be equipped with sodium bicarbonate blower 224, toward conveyance conduit in dry,
Sodium bicarbonate is blown into dry type reaction tower 22.Active carbon deduster 226 is equipped at the top of active carbon warehouse 225, bottom is equipped with active carbon
Weighing apparatus 227, by active carbon weighing apparatus 227 be equipped with active carbon blower 228, toward conveyance conduit in dry, active carbon is blown into
Dry type reaction tower 22.
Bag filter I 23 falls the dust-filtering in flue gas, and bottom connects screw conveyor I 231, can be by bag filter
Dust in I 23 transfers out.
The outlet bag filter I 23 is connected by pipeline with 24 entrance of pickling tower, and water is sprayed into pickling tower 24, is further dissolved
Soluble acid gas reduces the content of the sour gas in flue gas.The outlet of pickling tower 24 is entered by pipeline with neutralizing tower 25
Mouth is connected.It is connected with sodium hydroxide tank 241 on the inlet duct of neutralizing tower 25,20% sodium hydroxide is provided for neutralizing tower 25
Solution, sodium hydroxide solution neutralize again with the sour gas in flue gas.
The outlet of neutralizing tower 25 is connected by pipeline with 26 import of bag filter II, and flue gas enters after bag filter II 26 further
Dedusting, 26 lower end bag filter II connect screw conveyor II 262, the dust in bag filter II are transferred out.In and
Between tower 25 and bag filter II 26 be equipped with white cigarette heater II 261, by the flue gas after neutralizing tower to dew point it
On, mitigate corrosion of the flue gas to pipeline and chimney, improve the diffusance of pollutant, reduces the equipment such as pipeline to corrosion-resistant technique skill
Art requirement.
Ash collection device is equipped in the lower end of chilling tower 21, dry type reaction tower 22, bag filter I 23 and bag filter II 26
27, for collecting the impurity generated after gas cleaning and being periodically discharged.
Referring to Figure 10, flue gas emission unit 30 includes out of stock reactor 32 and chimney 34.It is filtered in Benitration reactor 32 and bag
It is equipped with air-introduced machine 31 between machine II 26, can make from incinerator 14 to negative pressure state is in air-introduced machine 31, flue gas energy is smoothly defeated
It send until outside discharge system.
It is also connected with ammonium hydroxide evaporator 33 on the inlet pipeline of Benitration reactor 32, provides ammonium hydroxide for Benitration reactor 32
Steam, ammonia vapor are reacted in Benitration reactor 32 with the nitrogen oxides in flue gas, and the nitrogen in flue gas is removed.
Ammonia water tank 331 is equipped with by ammonium hydroxide evaporator 33, by ammonium hydroxide delivery pump 332 to the inner delivering ammonia of ammonium hydroxide evaporator 33
Water.Electric heater 333 is additionally provided with by ammonium hydroxide evaporator 33, electric heater 333 is connected with heating blower 334, heating blower 334 to
Air is blown into electric heater 333, electric heater 333 is passed through in ammonium hydroxide evaporator 33 after heating air, ammonium hydroxide evaporator 33
In ammonium hydroxide via hot air become ammonia vapor be total to Benitration reactor 32 use.After the processing of Benitration reactor 32
The flue gas being up to state standards emitted via chimney 34.
The embodiment of the present invention also provides a kind of liquid dangerous waste incineration method, including
Step S1, waste liquid are transported to temporary library by special-purpose vehicle, are pumped at surge tank group by waste liquid, are deposited in surge tank
Storage, and vertical incinerator is sprayed by liquid waste spray gun after multistage filtering.It is divided into low-temperature zone and increasing in incinerator from top to bottom
Temperature section, the incineration temperature for heating section is 1000 degrees Celsius, and waste liquid is burning residing time in furnace greater than 2 seconds, from burning outlet of still
It is delivered to waste heat boiler.
Step S2, the flue gas come out from incinerator enter the first backhaul chamber in waste heat boiler, and flue-gas temperature is down to 950
Degree Celsius, it enters back into the second backhaul chamber temp and is down to 500 degrees Celsius, while the saturated vapor that flue gas heat generates is converged by steam
Collect tank to collect and use for the other ancillary equipments of system.
Step S3, the flue gas come out from waste heat boiler enter chilling tower, and penetrating clear water is by flue gas in 1 second in chilling tower
200 degrees Celsius are cooled to, is synthesized again with reducing dioxin.
Step S4, the flue gas after the cooling of chilling tower enter dry type reaction tower, the active carbon active carbon in dry type reaction tower
The harmful substances such as heavy metal, the dioxin in flue gas can be adsorbed, sodium bicarbonate can react to form dust-like sodium salt with sour gas.
Step S5, after dry type reaction tower removes part sour gas, flue gas enters dedusting in bag filter I, in flue gas
Grey Photon crosses screw conveyor I and is delivered to ash collection device 27.
Step S6, the flue gas after bag filter I dedusting enter forecooler (not shown) and tentatively cool down, subsequently into
Pickling tower carries out preliminary depickling, and 75 degrees Celsius are cooled in pickling tower, removing partial oxidation hydrogen, sulfur dioxide and hydrogen fluorine
Acid.
Step S7, from pickling tower come out after flue gas enter the further depickling of neutralizing tower, 20% is sprayed into neutralizing tower
Sodium hydroxide solution is reacted with the sour gas in flue gas, and flue gas cool-down is to 70 degrees Celsius.
Step S8, the flue gas come out from neutralizing tower first pass through demister (not shown) demisting, heat using white cigarette
Device enters bag filter II dedusting again after being heated to 190 degrees Celsius, enters Benitration reactor progress after completely removing dust particles
It is out of stock, it is discharged finally by chimney.
Liquid hazardous waste burn system of the invention, using burning unit, gas cleaning unit and flue gas emission unit
Combination, and using waste heat boiler collect burn waste liquid generate heat feed system in other ancillary equipments, utilize simultaneously
Flue gas to dew point is reduced the corrosion to system equipment by white cigarette heater, not only can effective purifying waste danger, also
Have energy saving, improves the economic benefit of enterprise.
In addition, liquid dangerous waste incineration method of the invention, is heated to high-temperature evaporation for waste liquid using vertical incinerator,
The recycle heat in flue gas is collected using waste heat boiler to use, it is then anti-by the chilling tower in gas cleaning unit, dry type
It answers the equipment such as tower, bag filter gradually to carry out the purification process of system to flue gas again and again, can effectively remove in flue gas
Harmful substance, the flue gas being most discharged afterwards through chimney are up to state standards, environmental protection and energy saving, and application prospect is wider.
Invention is described in detail above, it is described above, it is only a preferred embodiment of the present invention, when cannot limit
Determine the scope of the present invention, i.e., it is all according to the made equivalent changes and modifications of the application range, it should still belong in covering scope of the present invention.
Claims (10)
1. a kind of liquid hazardous waste burn system, including burn unit (10), gas cleaning unit (20) and flue gas emission list
First (30), which is characterized in that described gas cleaning unit (20) one end is connected with unit (10) are burned, the other end and flue gas emission
Unit (30) is connected；
The burning unit (10) includes surge tank group (11), incinerator (14), waste heat boiler (15) and blowdown drum (155)；Institute
Incinerator (14) top is stated equipped with spray gun group (12), incinerator (14) side is equipped with heat exchanger (141) and adjusts air
Blower (143)；The heat exchanger (141) connects a heat-exchange fan (142)；
It is equipped with steam at the top of the waste heat boiler (15) to collect tank (152), steam, which collects, is equipped with gas-distributing cylinder at the top of tank (152)
(153), gas-distributing cylinder (153) and steam, which collect, is equipped with white cigarette heater I (1533) between tank (152)；The waste heat boiler (15)
Side is equipped with denitration spray gun (151), and denitration spray gun (151) connects a denitration liquid storage tank (1511)；
The gas cleaning unit (20) includes chilling tower (21), dry type reaction tower (22) and bag filter I (23)；The chilling tower
(21) import connection waste heat boiler (15), outlet connection dry type reaction tower (22) import；Dry type reaction tower (22) outlet connects
Picking bag filter I (23) import；Described bag filter I (23) outlet connection pickling tower (24) import；Pickling tower (24) outlet connects
Connect neutralizing tower (25) import；Described neutralizing tower (25) outlet connection bag filter II (26) import；The neutralizing tower (25) and bag filter
White cigarette heater II (261) is equipped between machine II (26)；
The flue gas emission unit (30) includes out of stock reactor (32) and chimney (34), the connection of Benitration reactor (32) entrance
There are ammonium hydroxide evaporator (33)；Out of stock reactor (32) outlet is connected with chimney (34).
2. a kind of liquid hazardous waste burn system according to claim 1, which is characterized in that the surge tank group (11)
Including low heat value waste liquid surge tank (111), middle calorific value waste liquid surge tank (112) and high heating value waste liquid surge tank (113)；The spray
Rifle group (12) includes low heat value liquid waste spray gun (121), middle calorific value liquid waste spray gun (122) and high heating value liquid waste spray gun (123).
3. a kind of liquid hazardous waste burn system according to claim 2, which is characterized in that the incinerator (14) is other
It is additionally provided with combustion-supporting oily storage device (13), helps fuel lance (131) to connect incinerator by being mounted on incinerator (14)
(14)；Incinerator (14) lower part is additionally provided with incinerator flashback tank (144).
4. a kind of liquid hazardous waste burn system according to claim 3, which is characterized in that the gas-distributing cylinder (153)
Connect softening water tank (1531) and deoxygenation cabinet (1532)；Steaming is additionally provided between the gas-distributing cylinder (153) and softening water tank (1531)
Vapour condenser (1534)；Waste heat boiler flashback tank (154) are equipped with below the waste heat boiler (15).
5. a kind of liquid hazardous waste burn system according to claim 1, which is characterized in that the chilling tower (21) one
Side is equipped with water fog spraying gun (211), and water fog spraying gun (211) lower end is connected with spray gun cooling blower (212)；The dry type reaction tower
(22) two sides pass through pipeline connection sodium bicarbonate warehouse (221) and active carbon warehouse (225) respectively；Bag filter I (23) bottom
It connects screw conveyor I (231), (26) lower end bag filter II connects screw conveyor II (262)；The neutralizing tower (25) into
Mouth connection sodium hydroxide tank (241)；The gas cleaning unit (20) is additionally provided with several ash collection devices (27).
6. a kind of liquid hazardous waste burn system according to claim 5, which is characterized in that the Benitration reactor
(32) air-introduced machine (31) are equipped between bag filter II (26)；Ammonium hydroxide evaporator (33) side is equipped with ammonia water tank (331), leads to
It crosses ammonium hydroxide delivery pump (332) and conveys ammonium hydroxide to ammonium hydroxide evaporator (33) is inner, ammonium hydroxide evaporator (33) is also connected with electric heater
(333), electric heater (333) is connected with a heating blower (334).
7. a kind of liquid dangerous waste incineration technique, which comprises the following steps:
S1, burning phase: waste liquid being sprayed into vertical incinerator by liquid waste spray gun and is burned, and generates flue gas；
S2, waste heat temperature-fall period: the flue gas come out from incinerator, which enters in waste heat boiler, to cool down；
S3, gas cleaning stage: the flue gas come out from waste heat boiler enters the cooling of chilling tower, and dry type is entered after chilling tower and is reacted
Tower enters dedusting in bag filter I after dry type reaction tower, the preliminary depickling of pickling tower is entered after bag filter I, after preliminary depickling
Flue gas enters the further depickling of neutralizing tower, and flue gas enters bag filter II progress dedusting again after neutralized tower；
S4: the flue gas emission stage: from bag filter II come out flue gas enter Benitration reactor carry out it is out of stock, then by chimney row
Out.
8. a kind of liquid dangerous waste incineration technique according to claim 7, which is characterized in that burned in the step S1
When, incineration temperature is 1000 degrees Celsius, and waste liquid burned residing time in furnace greater than 2 seconds.
9. a kind of liquid dangerous waste incineration technique according to claim 7, which is characterized in that in the step S2, cigarette
Gas enters the first backhaul chamber in waste heat boiler, and flue-gas temperature is down to 950 degrees Celsius, enters back into the second backhaul chamber temp drop
To 500 degrees Celsius.
10. a kind of liquid dangerous waste incineration technique according to claim 7, which is characterized in that cigarette in the step S3
Gas enters chilling tower, and clear water is sprayed into chilling tower by flue gas and is cooled to 200 degrees Celsius in 1 second；Flue gas in the step S3
It is tentatively cooling to enter forecooler after bag filter I dedusting, carries out preliminary depickling, the flue gas in pickling tower subsequently into pickling tower
Temperature is down to 75 degrees Celsius, from pickling tower come out after flue gas enter neutralizing tower, into neutralizing tower spray into 20% sodium hydroxide
Solution is reacted with the sour gas in flue gas, and the flue gas come out from neutralizing tower first passes through demister demisting, is heated using white cigarette
Device enters bag filter II dedusting again after being heated to 190 degrees Celsius.
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