CN212673222U - Waste treatment equipment - Google Patents
Waste treatment equipment Download PDFInfo
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- CN212673222U CN212673222U CN202020662485.1U CN202020662485U CN212673222U CN 212673222 U CN212673222 U CN 212673222U CN 202020662485 U CN202020662485 U CN 202020662485U CN 212673222 U CN212673222 U CN 212673222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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Abstract
The utility model provides a treatment facility of discarded object, include: the mixing tank is used for uniformly mixing the disinfection solution and the waste; a crusher for crushing the solid waste; the stirrer is used for uniformly stirring the crushed solid waste, the additives and the liquid waste to obtain a solid-liquid mixture; an extruder for extruding the solid-liquid mixture into a solid waste mass; and the incineration device is used for incinerating the solid waste blocks. The treatment equipment sterilizes the waste through the mixing tank, extrudes the waste into waste blocks through the extruder and then burns the waste blocks, decomposes dioxin generated during the combustion of the waste through high-temperature burning, and seals the residues inside the waste blocks, so that the problem of secondary harm caused by the burning of the waste is solved; the heat energy generated by burning in the burning device can be recycled, preheated and dried, so that the burning temperature is stabilized at a high temperature state above 900 ℃, harmful gas cannot be generated in the burning process, and the treatment process is more environment-friendly.
Description
Technical Field
The utility model belongs to special field waste treatment, concretely relates to treatment facility of discarded object
Background
The pollutants in medical waste are very complex and contain not only a large amount of harmful chemicals but also a large amount of microorganisms such as germs, viruses, etc., which may be present. The existing medical wastes mainly adopt a high-temperature burning method, a thermal decomposition method and a sterilization and disinfection method.
The high-grade incineration method is characterized in that medical wastes in incineration equipment are converted into residues and gases through three stages of drying, ignition and incineration, and the residues and the gases are effectively destroyed due to high temperature in the incineration process, wherein the microorganisms and harmful substances comprise germs, pathogens and the like. However, some toxic and harmful fly ash, dioxin and heavy metal-containing residues are generated in the incineration process, and a large amount of liquid medical wastes exist in the medical wastes at the same time and cannot be treated by a simple incineration method.
The pyrolysis method heats organic components in medical waste at high temperature under the condition of no oxygen or poor oxygen, and breaks chemical bonds of compounds by using heat energy, so that organic matters with large molecular weight are converted into combustible gas, liquid fuel and coke. However, in this treatment technique, most harmful heavy metals remain in the residue, and dioxin and NO are generatedx、SOxAnd the like, and the pyrolysis method also cannot solve the treatment of liquid medical wastes.
Sterilization and disinfection processes are numerous, such as high temperature high pressure steam sterilization, chemical sterilization, microwave sterilization, and the like, but this type of process is not comprehensive in the market with little excess residue.
The medical waste treated by the conventional medical waste treatment equipment cannot be comprehensively treated by solid and liquid mixed medical waste, toxic and harmful substances can be remained, and the medical waste is easy to infect pathogens to pollute the environment, so that the equipment for treating the medical waste is more comprehensively, simply and environmentally friendly.
Disclosure of Invention
In order to solve the problem, the utility model provides a can handle the treatment facility of solid waste and liquid waste simultaneously.
In order to achieve the above object, the present invention provides a method for treating waste, comprising:
the mixing tank is used for uniformly mixing the disinfection solution and the waste;
a crusher for crushing the solid waste;
the stirrer is used for uniformly stirring the crushed solid waste, the additives and the liquid waste to obtain a solid-liquid mixture;
an extruder for extruding the solid-liquid mixture into a solid waste mass;
and the incineration device is used for incinerating the solid waste blocks.
The utility model provides a treatment facility of discarded object still has such characteristic: the incineration device comprises;
the incinerator is positioned at the lowest layer of the incineration device and is used for incinerating the solid waste blocks;
the preheating tower is positioned on the upper layer of the incinerator and used for preheating the solid waste blocks and purifying the flue gas;
the drying tower is positioned on the upper layer of the preheating tower, and a fan is arranged in the drying tower and used for solving the problem of drying of the solid waste blocks and purifying the flue gas;
the purifier is positioned on the upper layer of the drying tower and is used for further purifying the flue gas;
and the smoke window is positioned above the purifier and used for discharging purified gas.
The utility model provides a treatment facility of discarded object still has such characteristic: the incinerator is provided with an air supply control port.
The utility model provides a treatment facility of discarded object still has such characteristic: an air blower is arranged at the air supply control port.
The utility model provides a treatment facility of discarded object still has such characteristic: and a heating dispersion layer is arranged between the incinerator and the preheating tower.
The utility model provides a treatment facility of discarded object still has such characteristic: the temperature in the preheating tower is kept at 300-350 ℃.
The utility model provides a treatment facility of discarded object still has such characteristic: the preheating tower is provided with a flue gas heat exhaust pipeline for preventing the preheating tower from being overheated.
The utility model provides a treatment facility of discarded object still has such characteristic: the preheating tower and the drying tower are both provided with downward feeding ports.
The utility model provides a treatment facility of discarded object still has such characteristic: and a heating igniter is also arranged in the incinerator.
Has the advantages that:
the utility model provides a waste treatment equipment can be better handle the discarded object, disinfects through mixing tank to the discarded object, extrudees the discarded object into the waste piece through the extruder and burns again, pyrolysis produced dioxin when the discarded object burns to seal the residue in the inside of waste piece, solved the waste burn produce secondary harm's problem; the heat energy generated by burning in the burning device can be recycled, preheated and dried to ensure that the burning temperature is stabilized at a high temperature state of more than 900 ℃, and harmful gas is not generated in the burning process. Can simultaneously treat solid waste and liquid waste, is simpler and more convenient, and has the advantages of heat energy recycling, safety and environmental protection.
Drawings
FIG. 1 is a schematic view of a waste treatment facility according to the present invention;
FIG. 2 is a schematic view of an incineration apparatus in the waste treatment facility; and
figure 3 is a flow chart of the operation of the waste treatment facility provided by the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
The utility model provides a waste treatment equipment, as shown in figures 1-2, this equipment includes: a mixing tank 1 for uniformly mixing the sterilizing solution with the waste; a crusher 2 for crushing the solid waste; a stirrer 3 for uniformly stirring the crushed solid waste, additives and liquid waste to obtain a solid-liquid mixture; an extruder 4 for extruding the solid-liquid mixture into a solid waste block; and the incineration device 5 is used for incinerating the solid waste blocks.
The crusher 2 comprises a crushing knife roller, a hopper and a power system, wherein the power system controls the operation of the crushing knife roller so as to crush the materials in the hopper. The crusher can use the existing garbage crusher, and can also be customized to a crusher with a crushing knife roller and a hopper. Generally, a single-shaft garbage crusher with a single-knife roller structure is used, and crushed particles are small and uniform.
The extruder 3 comprises an extrusion for extruding the mixture to form a solid waste mass.
Based on the above embodiment, as an alternative embodiment, the incineration apparatus 5 comprises; an incinerator 51 located at the lowermost layer of the incineration apparatus, for generating heat energy required for incineration; a preheating tower 52, which is arranged on the upper layer of the incinerator and is used for preheating the waste blocks and adsorbing smoke dust and purified flue gas; the drying tower 53 is positioned on the upper layer of the preheating tower, and a fan 532 is arranged in the drying tower and used for solving the problem of drying of solid waste blocks, and flue gas flows through the waste blocks to adsorb and purify smoke dust; the purifier 54 is positioned at the upper layer of the drying tower and is used for further purifying the flue gas; a louver 55, located above the scrubber 54, for exhausting scrubbed gas.
The preheating tower 52 is additionally arranged between the drying tower 53 and the incinerator 51, so that the dried cold drying blocks can be prevented from entering the incinerator 51, the overall temperature of the incinerator 51 is reduced, toxic and harmful substances such as dioxin are generated, the preheating blocks preheated by the preheating tower 52 are close to the burning point of the waste blocks but are not combusted, after entering the incinerator 51, the high temperature of the incinerator 51 forms a high-surface outer layer on the surfaces of the preheating blocks instantly, and the waste biomass of the inner core of the preheating blocks is gasified. Air holes are arranged among the incinerator 51, the preheating tower 52 and the drying tower 53, and are used for enabling flue gas to flow from bottom to top. When the flue gas preheats the solid waste blocks, the flue gas passes through the preheating object. The surface of the object partially adsorbs part of smoke dust and waste gas in the flue gas. When the hot flue gas dries the waste block, the flue gas passes through the object being dried. The surface of the object partially adsorbs part of smoke dust and waste gas in the flue gas. The fan 532 in the drying tower 53 can better distribute heat and dry uniformly. The heat energy generated by burning is recycled, and the temperature is stabilized to be higher than 900 ℃ in the process of burning the added waste blocks through drying and preheating, so that no harmful gas is generated in the burning process, and secondary damage generated by burning is prevented.
Based on the above embodiment, as an alternative embodiment, the incinerator 51 is provided with the air supply control port 511, and the air supply control port 511 is used for controlling the air flow.
The air supply control port 511 is used for controlling the flow rate of air introduced into the incinerator and further controlling the combustion temperature, and the air supply control port 511 can also be used as a discharge port after sintering.
Based on the above embodiment, as an alternative embodiment, a heating dispersion layer 521 is disposed between the incinerator 51 and the preheating tower 52; the temperature in the preheating tower 52 is kept at 300-350 ℃; the preheating tower 52 is provided with a flue gas heat exhaust pipeline 523 for preventing the preheating tower from overheating.
The heating dispersion layer is used for dispersing heat energy emitted by the incinerator 51, so that the temperature of the preheating tower 52 is uniform, the temperature in the preheating tower 52 is kept at 350 ℃ for preventing waste blocks from being combusted, and toxic dioxin gas cannot be generated.
Based on the above embodiment, as an optional embodiment, the drying tower 53 is provided with a corresponding feeding port 531 for feeding the dried blocks into the preheating furnace 52; the preheating tower 52 is provided with a feed opening 522 for feeding the preheated preheating block into the incinerator 51.
Based on the above embodiment, as an alternative embodiment, a heating ignition device 513 is arranged in the incinerator for igniting the incinerator; an air blower 512 is provided at the air supply control port 511 of the incinerator for controlling the air supply of the incinerator.
Based on the above examples, as an alternative example, the incineration time is 3-10 h.
Setting the incineration time to be 3-10h, the waste blocks can be fully incinerated, toxic and harmful substances in the inner cores of the waste blocks are thoroughly decomposed and reacted, the harmful substances are reacted at high temperature to form harmless salt substances which are completely adsorbed on the high-temperature outer layers of the waste blocks, and non-toxic gas is discharged to the atmosphere. The waste blocks after sintering are nontoxic and harmless and can be used as building material base materials.
The incineration process is as follows:
firstly, adding a combustion improver into a firing point heating device 513 below the incinerator for incineration, and preheating the incineration device, so that the temperature of the incinerator 51 reaches the range of 900-1300 ℃, and the temperature of a preheating tower 52 reaches 300 ℃. Then, the solid waste blocks are thrown into a drying tower 53, the waste blocks are dried by utilizing the upward hot air in the incinerator 51, so that the waste blocks are dried into dried blocks with the humidity not more than 3%, a feeding port 531 below the drying tower 53 is opened, and the dried blocks are thrown into a preheating tower 52 for preheating; the temperature in the preheating tower 52 is kept below 300-; the high-temperature of 900 plus materials at 1300 ℃ in the incinerator 51 forms a surface high outer layer on the surface of the preheating block at the moment, the waste of the inner core of the preheating block is gasified, the gas passes through the hot high outer layer, partial smoke dust and waste gas in the smoke gas are adsorbed on the surface, the residual high-heat non-toxic substance gas goes upwards, and provides heat energy for subsequent incineration when passing through the preheating tower 52 and the drying tower 53, so that the heat energy is recycled, and then the heat energy is discharged into the atmosphere through the purifier 54 and the smoke window 55; the burned material lumps are taken out from the air feed control port 511 below the incinerator 51.
When the incinerator 51 starts to work, the solid waste blocks which are treated and dried by adding the high-temperature bacteria can be directly put into the preheating furnace 52 for preheating, and after a heat cycle is achieved subsequently, the waste blocks with the humidity of 20-35% are put into the drying furnace 53.
As shown in fig. 3, for the utility model provides a flow chart of the waste disposal equipment, the using method includes the following steps:
s1: simultaneously adding the waste and the disinfection solution into the mixing tank 1;
s2: sorting recyclable waste, and performing solid-liquid separation on the residual waste;
s3: crushing the sorted solid waste in a crusher 2 to obtain crushed solid waste;
s4: adding an additive and liquid waste into the crushed waste to obtain a solid-liquid mixture;
s5: extruding the solid-liquid mixture obtained in the step S4 through an extruder 3 to obtain a solid waste block;
s6: the waste pieces are incinerated in an incinerator 5.
The waste inevitably contains some germs, viruses and pathogens. Before the waste is treated, a disinfection solution is added into the waste to kill germs, viruses and pathogens. The additive added in the waste can react with a part of toxic and harmful substances and solidify the waste. The solidified waste blocks do not generate fly ash in the incineration process, toxic and harmful substances such as dioxin are sealed and solidified in the waste blocks in the incineration heating process, the toxic and harmful substances such as dioxin are decomposed at high temperature in the waste blocks, and residues are sealed inside the waste blocks, so that the waste can be better treated, and secondary harm to the environment is prevented.
The recyclable wastes mainly comprise metal objects and mercury-containing wastes, and the metal objects and the mercury-containing wastes can be recycled after being sterilized.
In step S1, the disinfectant solution is a 0.5-5ppm chlorine dioxide solution.
Chlorine dioxide is used as a safe and nontoxic disinfectant, has no 'three-cause' effect (carcinogenesis, teratogenesis and mutagenesis), and simultaneously does not generate chlorination reaction with organic matters in the disinfection process so as to generate organic chloride or other toxic substances which can generate 'three-cause' effect. And the chlorine dioxide has good deodorization and decoloration capabilities, high-efficiency sterilization and virus killing capabilities at low concentration, strong virus inhibiting capability and wide pH range, and is not influenced by water hardness and salinity. The 0.5-5ppm chlorine dioxide solution added into the medical waste can rapidly kill germs, viruses and pathogens in the medical waste.
In step S3, the particle size of the crushed solid waste is 1-20 mm.
The solid waste is crushed to 1-20mm, so that the subsequent reaction of the waste and the additive is quicker and more complete, and the waste is more favorably solidified.
In step S4, the additive includes one or more of aromatic polyamine, imidazole, acid anhydride, polyphenol, polythiol, calcium oxide, silicon dioxide, ferric oxide, aluminum oxide, tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite, sodium carbonate, organic combustible, and inorganic combustible.
Aromatic polyamines, imidazoles, anhydrides, polyphenols, polythiols, and the like as curing agents can facilitate rapid formation of solid waste masses after briquetting.
The reaction process of the tricalcium silicate is as follows: 3CaO SiO2+H2O→CaO·SiO2·YH2O (gel) + Ca (OH)2；
Of aluminium oxide3CaO·Al2O3+6H2O→3CaO·Al2O3·6H2O (hydrated calcium aluminate, unstable);
3CaO·Al2O3+3CaSO4·2H2O+26H2O→3CaO·Al2O3·3CaSO4·32H2O
3CaO·Al2O3·3CaSO4·32H2O+2〔3CaO·Al2O3〕+4H2O→3〔3CaO·Al2O3·CaSO4·12H2O〕
the reaction process of the tetracalcium aluminoferrite comprises the following steps:
CaO·Al2O3·Fe2O3+7H2O→3CaO·Al2O3·6H2O+CaO·Fe2O3·H2O
the reaction process is as follows: the alkaline calcium oxide and the sodium carbonate neutralize acidic substances. The other mixed substances are mixed with water and then react with the water rapidly to form an acicular crystal net structure, thereby fixing the toxic and harmful substances in the solid waste blocks. In addition, potassium gypsum generated by potassium sulfate with higher alkali content and dihydrate gypsum grows rapidly, and waste blocks are coagulated and fixed. And the slurry can restore plasticity after being vigorously stirred and can reach normal coagulation, so that waste blocks are easier to manufacture.
The organic combustible and the inorganic combustible are used as combustion improvers, and the waste incineration process is easier after the organic combustible and the inorganic combustible are added into the waste.
In step S4, the humidity of the solid-liquid mixture is 20% -35%.
Maintaining the mixture at 20-35% moisture further facilitates extrusion of the waste mass in a subsequent extruder, and insufficient moisture can result in excessive drying of the extruded waste mass, fly ash from incineration, and insufficient curing of the waste mass if too moist.
In step S6, the incineration temperature is 900-1300 ℃.
The high temperature is formed by instant heating under the condition that the incineration temperature is 900-1300 DEG CThe surface is high outer layer, the temperature can gasify the waste biomass in the waste block core, all gas in the gasification process needs to pass through the hot high outer layer, dioxin possibly generated by the waste is decomposed at high temperature, and So generated in the gasification processxThe heavy metal reacts with the additive under the high temperature state to generate sulfate, the heavy metal reacts with the additive under the high temperature state to mineralize into a harmless state, and all residues which cannot be decomposed by high temperature are sealed inside the waste blocks. The secondary damage caused by burning is prevented.
To sum up, the utility model provides a treatment facility of discarded object can be better handles the discarded object, disinfects and burn the processing to the discarded object simultaneously, can handle solid waste and liquid discarded object simultaneously moreover, and is simpler convenient, and heat energy cyclic utilization is and safety ring protects
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A waste treatment apparatus for treating waste, comprising:
the mixing tank is used for uniformly mixing the disinfection solution and the waste;
a crusher for crushing the solid waste;
the stirrer is used for uniformly stirring the crushed solid waste, the additives and the liquid waste to obtain a solid-liquid mixture;
an extruder for extruding the solid-liquid mixture into a solid waste mass;
and the incineration device is used for incinerating the solid waste blocks.
2. The apparatus for treating waste according to claim 1, wherein said incineration means comprises;
the incinerator is positioned at the lowest layer of the incineration device and is used for incinerating the solid waste blocks;
the preheating tower is positioned on the upper layer of the incinerator and used for preheating the solid waste blocks and purifying the flue gas;
the drying tower is positioned on the upper layer of the preheating tower, and a fan is arranged in the drying tower and used for solving the problem of drying of the solid waste blocks and purifying the flue gas;
the purifier is positioned on the upper layer of the drying tower and is used for further purifying the flue gas;
and the smoke window is positioned above the purifier and used for discharging purified gas.
3. The apparatus for treating waste according to claim 2, wherein the incinerator is provided with an air supply control port.
4. The apparatus for treating waste according to claim 3, wherein a blower is provided at the air supply control port.
5. The apparatus for treating waste according to claim 2, wherein a heating dispersion layer is provided between the incinerator and the preheating tower.
6. The apparatus for treating wastes according to claim 2, wherein the temperature in the preheating tower is maintained at 300-350 ℃.
7. The waste treatment plant of claim 6, wherein the preheater tower is provided with a flue gas exhaust conduit for preventing overheating of the preheater tower.
8. The apparatus for treating waste according to claim 2, wherein the preheating tower and the drying tower are provided with downward feed ports.
9. The apparatus for treating waste according to claim 2, wherein a heating igniter is further provided in the incinerator.
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| CN202020662485.1U CN212673222U (en) | 2020-04-27 | 2020-04-27 | Waste treatment equipment |
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| CN202020662485.1U CN212673222U (en) | 2020-04-27 | 2020-04-27 | Waste treatment equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111396885A (en) * | 2020-04-27 | 2020-07-10 | 王�锋 | Waste treatment method and treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111396885A (en) * | 2020-04-27 | 2020-07-10 | 王�锋 | Waste treatment method and treatment equipment |
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