CN107755407B - Harmless recycling treatment device and method for organic hazardous wastes - Google Patents
Harmless recycling treatment device and method for organic hazardous wastes Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 37
- 238000000197 pyrolysis Methods 0.000 claims abstract description 36
- 230000004913 activation Effects 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
- C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
- C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
- C10B49/08—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form
- C10B49/10—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form according to the "fluidised bed" technique
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
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- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a harmless recycling treatment device and a treatment method for organic hazardous waste, and belongs to the field of solid waste treatment. The harmless resource treatment device for the organic hazardous wastes comprises a drying furnace, a dry distillation activation furnace and a cooling and buffering bin; the drying furnace is characterized in that a raw material inlet is formed in the top of the drying furnace, and a first blanking port is formed in the bottom of the drying furnace; the first blanking port is connected with a feeding port arranged at the top end of the carbonization and activation furnace; the bottom of the carbonization and activation furnace is provided with a second blanking port, and the second blanking port is connected with the cooling cache bin; the drying furnace and the carbonization activation furnace are both provided with gas heat carrier mixed flow heating equipment; the method is suitable for treating powdery and high-water-content solid waste, the treatment is thorough, the harm of the solid waste to the environment is basically zero, and partial raw materials can be used as an adsorbent after being treated, so that the resource utilization of the solid waste is realized.
Description
Technical Field
The invention relates to the field of solid waste treatment, in particular to a harmless recycling treatment device and a treatment method for organic hazardous waste.
Background
The waste containing organic substances such as oily sludge and the like is a complex multi-system containing mineral oil, phenolic compounds and heavy metals, the leachate has high toxicity, the direct discharge can affect the nutritional environmental conditions and the quality of the crop growth, and the long-term accumulation can cause the serious damage of surface vegetation, thereby causing the soil and water source pollution.
The waste has high water content, complex organic matter components, small solid particles and certain viscosity, so that the harmless and recycling treatment process is complex, and the cost is high.
CN106630515A discloses a processing system, crushing equipment and a processing method for oily sludge. The equipment comprises an inlet cylinder, a crushing cylinder, a double-roller type shredding mechanism, a rotating shaft type crushing mechanism, a high-pressure water spraying device and a first oil scraping device. The technology combines multi-stage crushing, multi-stage oil removal, high-efficiency oil sticking or extraction into oil sludge treatment equipment, and is suitable for oil-containing sludge with different oil contents, particularly oil-containing sludge with lower oil content or serious emulsification. But the process can not realize the resource utilization of the oily sludge solid product, the equipment is complex, and the treatment cost is high.
CN106590804A discloses a device for processing oil-containing sludge into fuel powder, which can process and utilize the oil-containing sludge. No waste gas is generated in the whole process, so that secondary pollution is avoided; the whole process can be completed only by stirring and crushing in the treatment process, and the fuel powder prepared by the equipment can replace pulverized coal to be used as boiler fuel. However, the process has certain limitation, cannot adapt to various oil-based mud with wide sources and complex properties, and the heat value of the fuel powder is difficult to control.
CN106587552A A carbonization treatment method of oil-containing sludge, comprising the steps of drying, back mixing, pyrolysis and the like. In the process, one part of dried materials is back-mixed to a mixing machine, the other part of dried materials is subjected to pyrolysis, and the back-mixing ratio is high. In addition, the black carbon obtained in the carbonization process is low in utilization value and high in treatment cost.
CN106336103A discloses an oily sludge pyrolysis gasification and gas purification device, including pyrolysis gasifier furnace body and artifical synthetic gas purifier. The pyrolysis gasification furnace body is divided into two bins, the upper bin body is a drying bin, and the lower bin body is a pyrolysis gasification bin. The inner surface of the pyrolysis gasification furnace is sprayed with high-efficiency catalyst, and the heat loss rate is lower than 8%. The device thoroughly pyrolyzes and gasifies organic matters in the oily sludge, and the slag is inert and harmless. The generated artificial synthesis gas is purified and used for heating the pyrolysis gasifier, and the tail gas emission is less and the pollution is less. The process can not realize resource utilization of slurry products, and has the problems of low efficiency and difficult control of product quality.
CN106316024A A processing method for oil-containing sludge low-temperature pyrolysis recycling, adding water, flocculant and biomass into oil-containing sludge, stirring at high speed, and then modulating and dehydrating; fully mixing the prepared and dehydrated oil-containing sludge and the modified bentonite catalyst, and then putting the mixture into a tubular furnace for low-temperature pyrolysis; and (4) recycling the liquid generated by pyrolysis, and enabling the gas to enter a gas recycling device for combustion or utilization. The technology adopts a mode of combining physical and chemical conditioning and thermal decomposition, effectively treats harmful sludge and realizes the recovery of oil products. The method has the advantages of high heat consumption, complex device, small treatment capacity, high difficulty in continuous operation and immature technology.
Conventional waste treatment methods comprise an incineration process, physical extraction, a biological treatment method and a conventional pyrolysis technology, wherein the incineration process is easy to generate secondary pollutants such as dioxin and the like, and simultaneously, the problems of high operation cost, incapability of recycling residues and the like exist; the physical extraction method has high treatment cost, and the residue can hardly meet the current environmental protection standard; the biological treatment method has large floor area, low treatment capacity and immature process; the existing pyrolysis technology can not process powdery materials and high-water-content materials.
Disclosure of Invention
The invention aims to provide a harmless recycling treatment device and a treatment method thereof, which are suitable for treating organic hazardous wastes of powdery materials and high-water-content materials.
In order to solve the technical problems, the invention provides the following technical scheme:
on the one hand, the harmless resource treatment device for the organic hazardous wastes comprises a drying furnace, a dry distillation activation furnace and a cooling buffer bin which are connected in sequence; wherein,
the top of the drying furnace is provided with a raw material inlet, and the bottom of the drying furnace is provided with a first blanking port;
the first blanking port is connected with a feeding port arranged at the top end of the carbonization and activation furnace;
the bottom of the carbonization and activation furnace is provided with a second blanking port, and the second blanking port is connected with the cooling cache bin;
the drying furnace and the carbonization activation furnace are both provided with gas heat carrier mixed flow heating equipment, so that the problems of blockage and large gas resistance in the treatment process of the powdery waste can be solved, the raw materials can be directly fed into the furnace, the pretreatment is not needed, and the treatment cost can be reduced.
Further, the gas heat carrier mixed flow heating equipment comprises a conveying carrier gas supply device arranged outside the furnace body and a fluidizing carrier gas supply device communicated with the inner side of the bottom of the furnace body; the carrier gas conveying supply device can enable the material in the furnace to move forwards to the blanking port under the action of carrier gas and automatically enter a subsequent device; the steam or flue gas supplied by the fluidization carrier gas supply device has a large amount of CO2Can generate activation reaction with the residue in the furnace to generate the porous material with adsorption performance.
Furthermore, the fluidization carrier gas supply device comprises a gas distribution pipe arranged on the inner side of the bottom of the drying furnace or the carbonization and activation furnace and a burner connected with the gas distribution pipe through a pipeline, and the fluidization carrier gas supply device can enable materials in the furnace to be in a fluidization state under the action of ascending gas flow, so that full gas-solid contact can be ensured, and the heat exchange efficiency is greatly improved; the phenomena of wall sticking and caking of the materials are avoided, and the treatment is more thorough.
Further, the carrier gas conveyed in the gas heat carrier mixed flow heating equipment is steam or pyrolysis gas, and the fluidization carrier gas is steam or flue gas generated by a combustor.
Further, a first air outlet is formed in the top end of the drying furnace; the top end of the cooling buffer bin is provided with a second air outlet; the dry distillation activation furnace is loaded with a water vapor adsorbent; is suitable for treating high-water-content organic waste; the second gas outlet is connected with a gas purification device, the outlet of the gas purification device is connected with the combustor through a pipeline, the bottom of the gas purification device is provided with a recovery device, and the material subjected to dry distillation is discharged into a cooling buffer bin and is sent out after being cooled; the organic gas and the smoke gas generated in the dry distillation process are discharged out of the furnace together and enter a gas purification and condensation system, and the purified organic gas is respectively sent back to the drying and dry distillation activation furnace for reuse.
On the other hand, the invention also provides a harmless resource treatment method of the organic hazardous waste, which comprises the following steps:
step 1: adding the organic waste into a drying furnace, adjusting the temperature and the flow rate of gas heat carrier mixed flow heating equipment, and drying the waste;
step 2: adding the material obtained in the step (1) into a carbonization activation furnace, and adjusting the temperature and the flow rate of gas heat carrier mixed flow heating equipment to remove organic matters;
and step 3: and (3) conveying the material obtained in the step (2) to a cooling buffer bin, and cooling to obtain the porous carbon material.
Wherein in the step 1, the granularity of the organic waste is less than 2mm, the water content is less than 50 percent, and the oil content is less than 30 percent; the temperature of carrier gas conveyed in the gas heat carrier mixed flow heating equipment is 200-250 ℃, and the flow rate is 2-2.3 m/s; the temperature of the fluidization carrier gas is 200-300 ℃, and the flow speed is 6.5-8 m/s.
In the step 2, the temperature of carrier gas conveyed in the gas heat carrier mixed-flow heating equipment is 750-900 ℃, and the flow speed is 2-2.3 m/s; the temperature of the fluidization carrier gas is 750-900 ℃, and the flow rate is 6.5-8 m/s.
Further, the method also comprises a step 4 of purifying the gas in the cooling buffer bin for recycling.
On the other hand, the invention also provides application of the porous carbon material prepared by the harmless resource treatment method of the organic hazardous waste, which is used as an adsorbent used in wastewater treatment.
The invention has the following beneficial effects:
1. the drying furnace and the carbonization activation furnace both adopt gas heat carrier mixed flow heating equipment, so that the problems of blockage, large gas resistance and the like in the powder material treatment process are solved, the raw material can be solid or viscous liquid and can be directly fed into the furnace without pretreatment, and the treatment cost is reduced;
2. the harmless resource treatment device for the organic hazardous wastes is flexible to operate, and the temperature and the flow rate of carrier gas and fluidization carrier gas in the gas heat carrier mixed flow heating equipment can be adjusted according to the characteristics of materials; the material is in a fluidized state in the furnace, so that the phenomena of wall sticking and agglomeration of the material are avoided;
3. pyrolysis gas is added into the drying furnace along with pyrolysis residues, and then enters a purification cooling system after dry distillation and activation treatment, so that the risk of pipeline blockage is reduced to the maximum extent, and the service life of equipment is prolonged;
4. preparing a special adsorbent for wastewater treatment by using solid waste containing organic matters as a raw material; organic matters generated by pyrolysis enter the purification and cooling system along with the flue gas and then become combustible liquid, and resources are recycled to the maximum extent.
Drawings
FIG. 1 is a schematic structural view of the harmless resource treatment device for organic hazardous wastes.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a harmless recycling treatment device and a treatment method for organic hazardous waste, aiming at the problems of high cost and complex process in the process of treating powdery materials and high-water-content solid waste by a pyrolysis treatment process in the prior art.
Example 1
The harmless resource treatment device for the organic hazardous wastes comprises a drying furnace 2, a dry distillation activation furnace 7 and a cooling buffer storage bin 10 which are sequentially connected as shown in figure 1; wherein,
the top of the drying furnace 2 is provided with a raw material inlet 1, and the bottom is provided with a first blanking port 5;
the first blanking port 5 is connected with a feeding port 6 arranged at the top end of the carbonization and activation furnace 7;
the bottom of the carbonization and activation furnace 7 is provided with a second blanking port 9, and the second blanking port 9 is connected with a cooling and buffering bin 10;
the drying furnace 2 and the carbonization activation furnace 7 are both provided with gas heat carrier mixed flow heating equipment.
Further, the gas heat carrier mixed flow heating device comprises a conveying carrier gas supply device (shown as 4 or 8) arranged outside the furnace body and a fluidizing carrier gas supply device communicated with the inner side of the bottom of the furnace body.
Further, the fluidization carrier gas supply device comprises a gas distribution pipe arranged at the inner side of the bottom of the drying furnace 2 or the carbonization and activation furnace 7 and a burner (14 or 15) connected with the gas distribution pipe through a pipeline.
Further, the carrier gas conveyed in the gas heat carrier mixed flow heating equipment is steam or pyrolysis gas, and the fluidization carrier gas is steam or flue gas generated by a combustor.
Further, a first air outlet 3 is arranged at the top end of the drying furnace 2; the top end of the cooling buffer bin 10 is provided with a second air outlet 11; the carbonization activation furnace 7 is loaded with a water vapor adsorbent, and is suitable for treating organic wastes with high water content. The second gas outlet 11 is connected with a gas purification device 12, the outlet of the gas purification device 12 is connected with a combustor 14 or 15 through a pipeline, and organic gas is recycled; the bottom of the gas purification device 12 is provided with a recovery device 13 for recovering the liquid produced in the apparatus.
It should be noted that, for those skilled in the art, the size and specification of the drying furnace and the carbonization activation furnace can be adjusted according to actual requirements, and the protection scope of the present invention should be considered without departing from the principle of the present invention.
In the invention, the drying furnace and the carbonization activation furnace both adopt gas heat carrier mixed flow heating equipment, so that the problems of blockage, large gas resistance and the like in the powder material treatment process are solved, raw materials can be directly fed into the furnace without pretreatment, and the treatment cost is reduced; in addition, the conveying carrier gas supply device can enable the materials in the furnace to move forwards to the blanking port under the action of carrier gas and automatically enter a subsequent device; CO in steam or flue gas of fluidization carrier gas supply device2Carrying out activation reaction with the residue in the furnace to generate a porous material with adsorption performance; and the pyrolysis gas is added into the drying furnace along with the pyrolysis residue, and then enters a purification and cooling system after being subjected to dry distillation and activation treatment, so that the risk of pipeline blockage is reduced to the maximum extent, and the service life of the equipment is prolonged.
Example 2
Taking 2t/h organic solid waste treatment equipment as an example, the harmless recycling treatment method of organic hazardous waste comprises the following steps:
step 1: adding solid waste 2t with the granularity of less than 2mm, the water content of 40% and the oil content of 10% into a drying furnace through a screw conveyor, and conveying carrier gas in mixed-flow heating equipment at the temperature of 200 ℃ in mixed-flow heating equipment of a gas heat carrier; the flow velocity is 2 m/s; the temperature of the fluidization carrier gas is 200 ℃, the gas flow rate is 1.7m/s, and the waste material is dried;
step 2: adding the material obtained in the step 1 into a dry distillation activation furnace and a gas heat carrier mixed flow heating device, wherein the temperature of conveying carrier gas is 850 ℃; the flow rate is 2.3 m/s; the temperature of the fluidization carrier gas is 850 ℃, the gas flow rate is 6.87m/s, and organic matters are removed;
and step 3: and (3) conveying the material obtained in the step (2) to a cooling buffer bin, and cooling to obtain the porous carbon material.
The porous carbon material prepared by the method has more mesopores with the aperture of 2-10 nm, and the yield of adsorbate is 62-65%.
Comparative example 1
In this comparative example, the fluidizing carrier gas supply device provided inside the bottom of the furnace body and communicating with each other was not provided, and the other parts were the same as those of the apparatus for harmless resource treatment of organic hazardous wastes in example 1.
Taking 2t/h organic solid waste treatment equipment as an example, the harmless recycling treatment method of organic hazardous waste comprises the following steps:
step 1: adding solid waste with the granularity of less than 2mm, the water content of 40% and the oil content of 10% into a drying furnace through a screw conveyor, and then conveying carrier gas at the temperature of 200 ℃; drying the waste material at a flow rate of 2 m/s;
step 2: adding the material obtained in the step 1 into a dry distillation activation furnace, wherein the temperature of a conveying carrier is 900 ℃; the flow rate is 2.3m/s, and organic matters are removed;
and step 3: and (3) conveying the material obtained in the step (2) to a cooling buffer bin, and cooling to obtain the porous carbon material.
The porous carbon material prepared by the method has more pores with the diameter of 1-2nm, and the yield of adsorbate is 38-46%.
Comparative example 2
In this comparative example, a carrier gas supply device for transportation provided outside the furnace body was not provided, and the other components were the same as those of the apparatus for harmless resource treatment of organic hazardous wastes in example 1.
Taking 2t/h organic solid waste treatment equipment as an example, the harmless recycling treatment method of organic hazardous waste comprises the following steps:
step 1: after solid waste 2t with the granularity of less than 2mm, the water content of 40 percent and the oil content of 10 percent is added into a drying furnace through a screw conveyer, the temperature of fluidization carrier gas is 200 ℃, the gas flow rate is 6.87m/s, and the waste is dried;
step 2: adding the material obtained in the step (1) into a dry distillation activation furnace and a gas heat carrier mixed flow heating device, wherein the temperature of fluidization carrier gas is 900 ℃, the gas flow rate is 6.87m/s, and removing organic matters;
and step 3: and (3) conveying the material obtained in the step (2) to a cooling buffer bin, and cooling to obtain the porous carbon material.
The porous carbon material prepared by the method has more pores with the diameter of 2-4nm, and the yield of adsorbate is 42-51%.
In order to further illustrate the beneficial effects of the present invention, the inventors performed performance measurements on the adsorbents prepared in example 2 and comparative examples 1-2, as follows:
taking a certain wastewater treatment plant in Beijing as an example, the adsorbents prepared in the example 2 and the comparative example 1 are mixed with wastewater in a ratio of 1:100, the adsorption time is 30min, the COD value of the water is detected, and the adsorption capacity of the adsorbent is evaluated. The water inlet and outlet data are shown in the following table.
TABLE 1
As can be seen from Table 1, the adsorbent prepared by the invention can significantly reduce the biochemical index of sewage, and realize the resource utilization of waste.
The invention can treat powdery or organic wastes with high water content, and can be fed into the furnace without pretreatment, thereby reducing the operation cost to the maximum extent; the whole equipment can thoroughly treat organic wastes, the harm to the environment is basically zero, the gas generated after the wastes are treated can be recycled in the equipment, oil substances and the prepared solid adsorbent can be reused, and the maximization of waste resources is realized.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A harmless resource treatment device for organic hazardous waste is characterized by comprising a drying furnace, a dry distillation activation furnace and a cooling buffer bin which are sequentially connected; wherein,
the top of the drying furnace is provided with a raw material inlet, and the bottom of the drying furnace is provided with a first blanking port;
the first blanking port is connected with a feeding port arranged at the top end of the carbonization and activation furnace;
the bottom of the carbonization and activation furnace is provided with a second blanking port, and the second blanking port is connected with the cooling cache bin;
the drying furnace and the carbonization activation furnace are both provided with gas heat carrier mixed flow heating equipment,
the gas heat carrier mixed flow heating equipment comprises a conveying carrier gas supply device arranged outside the furnace body and a fluidizing carrier gas supply device communicated with the inner side of the bottom of the furnace body, wherein the conveying carrier gas supply device enables materials in the furnace to move forwards to a blanking port under the action of carrier gas and automatically enter a subsequent device.
2. The apparatus for harmless resource treatment of organic hazardous waste according to claim 1, wherein the fluidizing carrier gas supplying means comprises a gas distribution pipe disposed inside the bottom of the drying furnace or retort activation furnace and a burner connected to the gas distribution pipe through a pipe.
3. The apparatus for harmless resource treatment of organic hazardous wastes according to claim 2, wherein the carrier gas delivered in the gas heat carrier mixed flow heating device is steam or pyrolysis gas, and the fluidization carrier gas is steam or flue gas generated by a burner.
4. The apparatus for harmless resource treatment of organic hazardous waste according to claim 2, wherein the top end of the drying furnace is provided with a first air outlet; the top end of the cooling buffer bin is provided with a second air outlet; the dry distillation activation furnace is loaded with a water vapor adsorbent; the second gas outlet is connected with a gas purification device, an outlet of the gas purification device is connected with the combustor through a pipeline, and a recovery device is arranged at the bottom of the gas purification device.
5. A harmless recycling method of organic hazardous waste using the apparatus for harmless recycling of organic hazardous waste according to any one of claims 1 to 4, comprising:
step 1: adding the organic waste into a drying furnace, adjusting the temperature and the flow rate of gas heat carrier mixed flow heating equipment, and drying the waste;
step 2: adding the material obtained in the step (1) into a carbonization activation furnace, and adjusting the temperature and the flow rate of gas heat carrier mixed flow heating equipment to remove organic matters;
and step 3: and (3) conveying the material obtained in the step (2) to a cooling buffer bin, and cooling to obtain the porous carbon material.
6. The method for harmless resource treatment of organic hazardous waste according to claim 5, wherein in step 1, the particle size of the organic waste is less than 2mm, the water content is less than 50%, and the oil content is less than 30%; the temperature of carrier gas conveyed in the gas heat carrier mixed flow heating equipment is 200-250 ℃, and the flow rate is 2-2.3 m/s; the temperature of the fluidization carrier gas is 200-300 ℃, and the flow speed is 6.5-8 m/s.
7. The harmless resource treatment method of the organic hazardous waste according to claim 5, wherein in the step 2, the temperature of the carrier gas conveyed in the gas heat carrier mixed flow heating equipment is 750-900 ℃, and the flow rate is 2-2.3 m/s; the temperature of the fluidization carrier gas is 750-900 ℃, and the flow rate is 6.5-8 m/s.
8. The method for harmless resource treatment of organic hazardous wastes according to claim 5, further comprising a step 4 of purifying and recycling the gas in the cooling buffer storage.
9. The application of the porous carbon material prepared by the harmless resource treatment method of the organic hazardous waste in claim 5 is characterized in that the porous carbon material is used as an adsorbent used in wastewater treatment.
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| CN108728140B (en) * | 2018-08-13 | 2024-02-06 | 湖南叶林环保科技有限公司 | Organic hazardous waste low-temperature pyrolysis power generation system |
| CN109485196A (en) * | 2018-12-28 | 2019-03-19 | 苏州聚阳环保科技股份有限公司 | Mobile comprehensive dangerous waste processing equipment |
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