CN113324251A - Hazardous waste kiln co-treatment process - Google Patents
Hazardous waste kiln co-treatment process Download PDFInfo
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- CN113324251A CN113324251A CN202110452173.7A CN202110452173A CN113324251A CN 113324251 A CN113324251 A CN 113324251A CN 202110452173 A CN202110452173 A CN 202110452173A CN 113324251 A CN113324251 A CN 113324251A
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- hazardous waste
- solid
- incinerator
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011278 co-treatment Methods 0.000 title description 3
- 239000007787 solid Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 19
- 239000002912 waste gas Substances 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 238000010791 quenching Methods 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 3
- 230000002588 toxic effect Effects 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 2
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 231100000989 no adverse effect Toxicity 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 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
- 239000000567 combustion gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 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
- F23G5/02—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
- F23G5/44—Details; Accessories
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a hazardous waste kiln cooperative treatment process, wherein a hydraulic rotary shear type crusher is used for crushing solid and semi-solid hazardous wastes; feeding the waste into a horizontal hydraulic mixer; the materials fall into a hydraulic high-density single-piston solid pump unit below the horizontal hydraulic mixer under the action of gravity, and enter a spray gun by virtue of pumping residual pressure of a single plunger pump of the hydraulic high-density single-piston solid pump unit, and are scattered by the spray gun to enter an incinerator; the waste gas generated by the cooperation of the incinerator and the incineration of hazardous waste enters a waste heat boiler through a tail gas discharge channel, the waste gas is cooled to 800 ℃ for the first time in the waste heat boiler, then the waste gas enters a quench tower, the waste gas is quenched to below 200 ℃ within 1s, and the gas is discharged out of the quench tower for treatment and discharge. The invention has the advantages of no adverse effect on the safety of the surrounding natural ecological environment, replacement and saving of part of natural fossil, fuel and coal, and reduction of carbon dioxide emission.
Description
Technical Field
The invention relates to the technical field of hazardous waste treatment, in particular to a hazardous waste kiln co-treatment process.
Background
According to the statistics of 2007, the national hazardous waste production amount is 176 hundred million tons, which is 15.9% higher than the last year, the discharge amount is 11967 million tons, which is 66.5% lower than the last year, the comprehensive utilization amount is 1103115 million tons, the storage amount is 24119 million tons, and the disposal amount is 41350 million tons. According to data of environmental condition bulletin of Guangdong province, the generation amounts of dangerous waste in 2006, 2008 and 2009 are 110107 ten thousand tons, 129884 ten thousand tons and 1413795 thousand tons respectively, and the generation coefficient method is adopted for prediction: by 2015, the national production of hazardous waste will reach 19600 ten thousand tons. According to the prediction results, with the increasing national economic total amount, the generation amount of the hazardous waste still shows the trend of increasing year by year, and the pressure for carrying out comprehensive utilization and subsequent disposal of the hazardous waste is increased.
With the increasing rate of urban sewage treatment in China, the problem of disposing hazardous waste generated by sewage treatment plants is increasingly prominent, and the problem becomes a new environmental problem. In order to treat the dangerous waste with the safety regulation, the state issues ' trial of dangerous waste treatment and disposal and pollution control technical policy for urban sewage treatment plants ' and ' trial of best feasible technical guidelines for treating and disposing pollution control for the dangerous waste for the urban sewage treatment plants ' one after another '. The treatment of the hazardous waste of the national urban sewage treatment plants follows the original rules of reduction, reclamation and harmlessness, the main principle of harmlessness is adopted, the auxiliary principle of resources is adopted, the typical method of gradual successful popularization at home and abroad and the standard in the optimal feasible technical guide of the treatment of the hazardous waste of the sewage treatment plants are combined, and the national hazardous waste treatment technology mainly adopts two modes of land utilization (excluding agriculture) and incineration. The economically developed market should be mainly incinerated, the less developed market should be mainly incinerated after the land utilization is gradually increased, and the existing large-scale incinerating kilns such as the incinerating system of the thermal power plant and the incinerating kilns of the cement plant are actively used for incineration. The harmless disposal rate of hazardous wastes reaches 80 percent by 2015.
With the development of society, the generation amount of dangerous wastes is larger and larger, and at present, most of urban dangerous wastes in China are incinerated and subjected to sanitary landfill treatment. Because of the shortage of land resources, the hazardous waste landfill site occupies a large amount of land, and the construction of urban hazardous waste sanitary landfill sites is not proposed at present. The incineration method can achieve harmless treatment of hazardous waste, but toxic gases such as dioxin, furan and the like contained in combustion gas are quite difficult to treat, and the combustion gas can pollute the atmosphere if the toxic gases are not clean. The economic development causes the consumption of various resources to be larger and larger, and many resources are exhausted.
Disclosure of Invention
The invention aims to provide a hazardous waste kiln cooperative treatment process, which has the advantages that when a dry cement production line is used for cooperatively treating industrial waste, life hazardous waste and most hazardous waste, the evaluation of the life cycle environment of cement concrete is maintained unchanged, the safety of the surrounding natural ecological environment is not adversely affected, a part of natural fossil, fuel and coal can be saved, the emission of carbon dioxide is correspondingly reduced, a certain amount of hazardous waste is properly sold in cooperation with the whole society, the shortage of land resources is solved, and a large amount of land is occupied by a hazardous waste landfill; the combustion gas generated by combustion contains toxic gases such as dioxin, furan and the like, which are difficult to treat and pollute the atmosphere if not clean. The economic development causes the consumption of various resources to be larger and larger, and a plurality of resources face the problem of exhaustion.
In order to achieve the purpose, the invention provides the following technical scheme: a hazardous waste kiln cooperative treatment process comprises a multi-petal grab bucket, a hydraulic rotary shear type crusher, a horizontal hydraulic mixer, a hydraulic high-density single-piston solid pump unit, a hydraulic shaftless screw conveyor, a forced feeder, a spray gun, an incinerator, a waste heat boiler and a quench tower, wherein the multi-petal grab bucket lifts solid and semi-solid dangerous waste to a collecting hopper of the hydraulic rotary shear type crusher, and the solid and semi-solid dangerous waste is sheared, torn and extruded by the hydraulic rotary shear type crusher;
the maximum particle of the hazardous waste crushed by the hydraulic rotary shear type crusher is 250mmX60mm, the crushed hazardous waste falls into a horizontal hydraulic mixer from a chute closed below the hydraulic rotary shear type crusher due to the action of gravity, and meanwhile, industrial toxic and harmful hazardous waste, waste oil, oil sludge, waste organic volume and waste water also enter the horizontal hydraulic mixer through a reserved pipe orifice on the hydraulic rotary shear type crusher;
the material prepared by the horizontal hydraulic mixer falls into a hydraulic high-density single-piston solid pump unit below the horizontal hydraulic mixer under the action of gravity, the material entering the hydraulic high-density single-piston solid pump unit is firstly pushed to the upper part of a feeding port of a single-plunger pump of the hydraulic high-density single-piston solid pump unit by a horizontal hydraulic shaftless screw conveyor, a set of forced feeders are arranged at the tail end of the hydraulic shaftless screw conveyor and in the direction orthogonal to the hydraulic shaftless screw conveyor and the single-plunger pump of the hydraulic high-density single-piston solid pump unit, a special spray gun for feeding the liquid hazardous waste incinerator is connected at the tail end of a conveying pipeline, the material enters the spray gun by virtue of pumping residual pressure of the single-plunger pump of the hydraulic high-density single-piston solid pump unit, is scattered by the spray gun and enters the incinerator, and is incinerated at the high temperature of 1200-1450 ℃, the burning time is 4 s; the flow direction of high-temperature gas in the incinerator is opposite to that of materials; the incinerator is in alkaline atmosphere;
waste gas generated by the cooperation of the incinerator and the incineration of hazardous waste enters the waste heat boiler through the tail gas discharge channel, the waste gas is cooled to 800 ℃ for the first time in the waste heat boiler, waste heat is recycled, then the waste gas enters the quench tower, the waste gas is quenched to below 200 ℃ within 1s, and the gas is discharged out of the quench tower to be treated and discharged.
As a further aspect of the present invention, the hydraulic rotary shear crusher is hydraulically driven, and two driving shafts of the hydraulic rotary shear crusher are respectively equipped with a hydraulic motor and a speed reducer.
As a further aspect of the invention, a hydraulic gyratory shear crusher is equipped with a hydraulic pusher and an automatic discharge gate.
As a further aspect of the invention, the force feeder is comprised of two vertically reciprocating hydraulic pistons.
As a further scheme of the invention, the spray gun main body is a steel pipe of DN350mm, and a dispersing and cooling air annular channel and an air distribution device are arranged outside the steel pipe.
Compared with the prior art, the invention has the following beneficial effects: the incineration rate is high, the incineration temperature range of a common incinerator is 850-1100 ℃, in a cement kiln cooperative disposal system, the material incineration temperature must ensure that the incineration rate of harmful components of main organic matters of hazardous wastes can reach more than 99.99 percent under the high temperature condition of 1200-1450 ℃, and even stable organic matters can be completely decomposed.
The incineration residence time is long, and the longer the residence time is in a high-temperature environment, the more sufficient the harmful gas is incinerated. The stable retention time of harmful gas generated by burning hazardous wastes at the temperature higher than 1300 ℃ exceeds 4s, while the retention time of the smoke of a common incinerator is only 2 s.
The turbulent flow phenomenon is stable, the flow direction of high-temperature gas in the incinerator of the cement kiln cooperative disposal system is opposite to that of materials, the turbulent flow is strong, and gas-solid mixing heat transfer decomposition and chemical combination diffusion are facilitated.
The alkaline atmosphere can neutralize acidic substances such as HCl, SO2 and the like generated after combustion, SO that the acidic substances are changed into salts to be fixed, and the problem of secondary pollution generated by waste gas generated by combustion of a common incinerator can be solved.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown herein, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provided by the invention comprises the following steps: a hazardous waste kiln cooperative treatment process comprises the following crushing treatment flows:
lifting the solid and semi-solid hazardous waste to a collecting hopper of a hydraulic rotary shear type crusher by the multi-petal grab bucket, and shearing, tearing and extruding the solid and semi-solid hazardous waste by the hydraulic rotary shear type crusher; the size of the material is reduced to meet the requirement of crushing. The hydraulic rotary shear type crusher adopts hydraulic drive, and two driving shafts of the hydraulic rotary shear type crusher are respectively provided with a hydraulic motor and a speed reducer. Industrial and hazardous waste, and its packaging: such as sheet iron or lead cans, plastic drums, glass jars and ceramic containers, can be placed directly into a hydraulic gyratory shear crusher and crushed.
The hydraulic rotary shearing type crusher is provided with the hydraulic pusher and the automatic discharging door, when the hydraulic rotary shearing type crusher operates, the hydraulic pusher pushes dangerous waste to the working surface of the hydraulic rotary shearing type crusher, so that the phenomenon that the dangerous waste bridges on the working surface can be avoided, the materials are better sheared and crushed, and the crushing capacity is improved; the automatic discharging door is driven by hydraulic pressure and is installed obliquely, and when uncrushable materials exist in hazardous waste, the uncrushable materials can be automatically discharged from the discharging door without obstruction.
Example 2
The embodiment provided by the invention comprises the following steps: a hazardous waste kiln cooperative treatment process comprises the following mixed processes:
the maximum particle of the hazardous waste crushed by the hydraulic rotary shear type crusher is 250mmX60mm, the material of the hazardous waste crushed to a proper size falls into a horizontal hydraulic mixer below from a closed chute due to the action of gravity, and meanwhile, the industrial toxic and harmful hazardous waste, waste oil, oil sludge, waste organic volume and waste water also enter the horizontal hydraulic mixer through a reserved pipe orifice on the hydraulic rotary shear type crusher.
Example 3
The embodiment provided by the invention comprises the following steps: a hazardous waste kiln cooperative treatment process comprises the following steps:
the materials which are prepared by the horizontal hydraulic mixer fall into a hydraulic high-density single-piston solid pump unit below the horizontal hydraulic mixer under the action of gravity, the materials which enter the hydraulic high-density single-piston solid pump unit are firstly pushed to the upper part of a feeding port of a single-plunger pump of the hydraulic high-density single-piston solid pump unit by a horizontally installed hydraulic shaftless screw conveyor, a set of forced feeder is installed in the direction which is orthogonal and vertical to the hydraulic shaftless screw conveyor and the single-plunger pump of the hydraulic high-density single-piston solid pump unit at the tail end of the hydraulic shaftless screw conveyor, the forced feeder is composed of two hydraulic pistons which reciprocate in the vertical direction, and the regulated hazardous wastes which are conveyed by the hydraulic double shaftless screws are extruded into a pump cavity in a responsible manner; the tail end of the conveying pipeline is connected with a special spray gun for feeding the liquid hazardous waste incinerator, materials enter the spray gun by virtue of pumping residual pressure of a single plunger pump of a hydraulic high-density single-piston solid pump unit, and are scattered by the spray gun to enter the incinerator.
The spray gun main body is a steel pipe of DN350mm, and a dispersing and cooling air annular channel and an air distribution device are arranged outside the steel pipe. Because the spray gun works at high temperature, air needs to be continuously introduced for cooling; the valves and safety devices for regulating and distributing air are designed on the special valve frame and arranged at the spray gun, and the spray gun conveys and disperses materials by pumping residual pressure and compressed air without electric power.
Example 4
The embodiment provided by the invention comprises the following steps: a hazardous waste kiln cooperative treatment process comprises the following incineration treatment processes:
the material is incinerated at 1200-1450 deg.c, and the incinerating rate of harmful components in the main organic matter in the dangerous waste at 1200-1450 deg.c is over 99.99% and the stable organic matter is decomposed completely; the longer the stagnation time in a high-temperature environment, the more sufficient the harmful gas is incinerated. The stable retention time of harmful gas generated by burning the hazardous wastes at the temperature higher than 1300 ℃ exceeds 4 s; the flow direction of the high-temperature gas in the incinerator is opposite to that of the materials, and turbulence is strong, so that gas-solid mixing heat transfer decomposition and chemical combination diffusion are facilitated; the incinerator is alkaline atmosphere, which can neutralize the acid substances such as HCl, SO2, etc. generated after burning, to make them become salt to be fixed, SO as to avoid the secondary pollution problem generated by burning waste gas in the common incinerator.
Example 5
The embodiment provided by the invention comprises the following steps: a hazardous waste kiln cooperative treatment process comprises a waste heat recovery treatment process:
the waste gas generated by the cooperation of the incinerator and the incineration of the hazardous waste enters the waste heat boiler through the tail gas discharge channel, the waste gas is cooled to 800 ℃ for the first time in the waste heat boiler, the waste heat is recycled, one part of the waste heat is used for heating the flue gas, and the other part of the waste heat is used for heating a plant area. Then the waste gas enters a quenching tower, and the temperature of the waste gas is suddenly reduced to below 200 ℃ in 1s, so that the dioxin is prevented from being synthesized again. The gas is discharged out of the quenching tower for treatment and discharge.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a dangerous useless kiln coprocessing process, includes orange-peel bucket, hydraulic pressure gyration shear type breaker, horizontal hydraulic pressure blender, hydraulic pressure high density single piston solid pump unit, hydraulic pressure shaftless auger delivery ware, forces feeder, spray gun, burns burning furnace, exhaust-heat boiler and quench tower, its characterized in that: lifting the solid and semi-solid hazardous waste to a collecting hopper of a hydraulic rotary shearing type crusher by the multi-petal grab bucket, and shearing, tearing and extruding the solid and semi-solid hazardous waste by the hydraulic rotary shearing type crusher;
the maximum particle of the hazardous waste crushed by the hydraulic rotary shear type crusher is 250mmX60mm, the crushed hazardous waste falls into a horizontal hydraulic mixer from a chute closed below the hydraulic rotary shear type crusher due to the action of gravity, and meanwhile, industrial toxic and harmful hazardous waste, waste oil, oil sludge, waste organic volume and waste water also enter the horizontal hydraulic mixer through a reserved pipe orifice on the hydraulic rotary shear type crusher;
the materials which are prepared by a horizontal hydraulic mixer fall into a hydraulic high-density single-piston solid pump unit below the horizontal hydraulic mixer under the action of gravity, the materials which enter the hydraulic high-density single-piston solid pump unit are firstly pushed to the upper part of a feeding port of a single-plunger pump of the hydraulic high-density single-piston solid pump unit by a horizontal hydraulic shaftless screw conveyor, a set of forced feeders are arranged at the tail end of the hydraulic shaftless screw conveyor and in the direction which is orthogonal and vertical to the hydraulic shaftless screw conveyor and the single-plunger pump of the hydraulic high-density single-piston solid pump unit, a special spray gun for feeding the liquid hazardous waste incinerator is connected at the tail end of a conveying pipeline, the materials enter the spray gun by virtue of pumping residual pressure of the single-plunger pump of the hydraulic high-density single-piston solid pump unit, the materials are scattered by the spray gun to enter the incinerator, and are incinerated at the high temperature of 1200 ℃ -1450 ℃, the burning time is 4 s; the flow direction of high-temperature gas in the incinerator is opposite to that of materials; the inside of the incinerator is alkaline atmosphere;
waste gas generated by the cooperation of the incinerator and the incineration of hazardous waste enters the waste heat boiler through the tail gas discharge channel, the waste gas is cooled to 800 ℃ for the first time in the waste heat boiler, waste heat is recycled, then the waste gas enters the quench tower, the waste gas is quenched to below 200 ℃ within 1s, and the gas is discharged out of the quench tower to be treated and discharged.
2. The hazardous waste kiln cooperative treatment process as claimed in claim 1, is characterized in that: the hydraulic rotary shear type crusher adopts hydraulic drive, and two driving shafts of the hydraulic rotary shear type crusher are respectively provided with a hydraulic motor and a speed reducer.
3. The hazardous waste kiln cooperative treatment process as claimed in claim 1, is characterized in that: the hydraulic gyratory shear crusher is equipped with a hydraulic pusher and an automatic discharge gate.
4. The hazardous waste kiln cooperative treatment process as claimed in claim 1, is characterized in that: the forced feeder consists of two vertically reciprocating hydraulic pistons.
5. The hazardous waste kiln cooperative treatment process as claimed in claim 1, is characterized in that: the spray gun main body is a steel pipe of DN350mm, and a dispersing and cooling air annular channel and an air distribution device are arranged outside the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110452173.7A CN113324251A (en) | 2021-04-26 | 2021-04-26 | Hazardous waste kiln co-treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110452173.7A CN113324251A (en) | 2021-04-26 | 2021-04-26 | Hazardous waste kiln co-treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454333A (en) * | 1993-01-08 | 1995-10-03 | Southdown, Inc. | M/A for feeding hazardous waste fuels with high solids content into a cement kiln |
| US5555823A (en) * | 1994-09-02 | 1996-09-17 | Davenport; Ricky W. | Method and apparatus for feeding waste material to a dry kiln |
| JP2003154252A (en) * | 2001-11-26 | 2003-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Method of determining mixing degree in mixer in closed type waste incineration equipment |
| JP2004169931A (en) * | 2002-11-15 | 2004-06-17 | Jfe Engineering Kk | Waste treatment apparatus |
| CN104251490A (en) * | 2013-06-27 | 2014-12-31 | 同方环境股份有限公司 | Crushing pretreatment system for hazardous wastes |
| CN108870411A (en) * | 2018-08-27 | 2018-11-23 | 南京凯盛开能环保能源有限公司 | A kind of system and method for cement kiln synergic processing danger wastes |
| CN111121049A (en) * | 2020-02-24 | 2020-05-08 | 上海三融环保工程有限公司 | System and method for cooperatively treating sludge in cement plant |
-
2021
- 2021-04-26 CN CN202110452173.7A patent/CN113324251A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5454333A (en) * | 1993-01-08 | 1995-10-03 | Southdown, Inc. | M/A for feeding hazardous waste fuels with high solids content into a cement kiln |
| US5555823A (en) * | 1994-09-02 | 1996-09-17 | Davenport; Ricky W. | Method and apparatus for feeding waste material to a dry kiln |
| JP2003154252A (en) * | 2001-11-26 | 2003-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Method of determining mixing degree in mixer in closed type waste incineration equipment |
| JP2004169931A (en) * | 2002-11-15 | 2004-06-17 | Jfe Engineering Kk | Waste treatment apparatus |
| CN104251490A (en) * | 2013-06-27 | 2014-12-31 | 同方环境股份有限公司 | Crushing pretreatment system for hazardous wastes |
| CN108870411A (en) * | 2018-08-27 | 2018-11-23 | 南京凯盛开能环保能源有限公司 | A kind of system and method for cement kiln synergic processing danger wastes |
| CN111121049A (en) * | 2020-02-24 | 2020-05-08 | 上海三融环保工程有限公司 | System and method for cooperatively treating sludge in cement plant |
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Application publication date: 20210831 |