CN213746746U - Harmless treatment equipment for hazardous waste - Google Patents
Harmless treatment equipment for hazardous waste Download PDFInfo
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- CN213746746U CN213746746U CN202022541120.6U CN202022541120U CN213746746U CN 213746746 U CN213746746 U CN 213746746U CN 202022541120 U CN202022541120 U CN 202022541120U CN 213746746 U CN213746746 U CN 213746746U
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Abstract
The utility model discloses a innocent treatment equipment for hazardous waste relates to hazardous waste treatment technical field, and it can fully burn the processing to hazardous waste, through heat recovery back, carries out a series of SOx/NOx control dust removal processing to tail gas, finally realizes innocent emission, the high-efficient environmental protection of whole process flow, energy-conserving economy simultaneously. The harmless treatment equipment for the hazardous waste comprises: the system comprises a material pretreatment system, an incineration system, a heat energy recovery system and a tail gas purification system; the material pretreatment system comprises: the device comprises a material crusher, a vibrating feeder, a material elevator, a material bin and a distributing device; the incineration system comprises: the rotary kiln incinerator, the secondary combustion chamber and the slag remover; the thermal energy recovery system comprises: a heat exchanger, a quench tower, and a boat-shaped ash hopper; the exhaust gas purification system includes: a Venturi type reactor, a flue jet type reactor, a high-temperature bag-type dust remover and an SCR low-temperature denitration reactor.
Description
Technical Field
The utility model relates to a hazardous waste handles technical field, especially involves a innocent treatment equipment for hazardous waste.
Background
With the rapid development of national socioeconomic, various waste materials are more and more, and the amount of dangerous waste in a comprehensive incineration disposal site is increased rapidly. The hazardous waste has the characteristics of flammability, explosiveness, toxicity, corrosion and the like, causes serious pollution to the environment, has potential long-term harm and restricts sustainable development.
At present, various waste treatment methods mainly include a physicochemical method, an incineration method, a solidification landfill method, a cement kiln co-disposal method and the like. The high-temperature burning method is generally adopted, but the equipment has short service life, high operation cost, low working efficiency and certain limitation on applicability. The rotary kiln type incinerator is selected as one of main incinerator types for burning hazardous wastes in China, and is particularly suitable for a commercial centralized incineration treatment system, and the rotary kiln type incineration treatment universality is high.
However, the direct incineration treatment of hazardous wastes has the problems of insufficient combustion and incomplete treatment, and generates a large amount of toxic and harmful substances. The material composition and the content thereof are greatly changed in the incineration process of the hazardous wastes, and a large amount of dust and SO are generated2Acidity of HCl, HF, NOx, etcThe gas causes secondary pollution. After the hazardous waste is burnt at a high temperature, a large amount of dry distillation non-condensable gas enters a tail gas purification system at a temperature range of 300-400 ℃, dioxin is easily resynthesized at the temperature range, and serious environmental pollution is caused, so that the dioxin must be treated at the same time.
In recent years, people's awareness of environmental protection is gradually strengthened, and countries set stricter standards for emission of various pollutants. Therefore, before the exhaust gas is discharged, the purification treatment such as desulfurization, denitrification, dedusting and the like is required, and the discharge of the toxic substances is controlled within the allowable range of national standards.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a innocent treatment equipment for hazardous waste, it can fully burn the processing to hazardous waste, after heat recovery, carries out a series of SOx/NOx control dust removal processing to tail gas, finally realizes innocent emission, the high-efficient environmental protection of whole process flow, energy-conserving economy simultaneously.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.
In order to realize the utility model discloses above at least one purpose, the utility model provides an innocent treatment equipment for hazardous waste, include: the system comprises a material pretreatment system, an incineration system, a heat energy recovery system and a tail gas purification system;
the material pretreatment system comprises: the material crusher corresponds to the material elevator through the vibrating feeder, the material elevator corresponds to the material bin through the conveying belt, and material raised dust is purified by the bag-type dust collector and then is emptied;
the incineration system comprises: the rotary kiln incinerator is connected with the material bin through a distributor, an outlet of the rotary kiln incinerator is connected with a secondary combustion chamber, an outlet of the secondary combustion chamber is connected with a slag remover, inlets of the rotary kiln incinerator and the secondary combustion chamber are respectively connected with a fuel device, and oxygen and compressed air are introduced by a combustion fan (such as a blower) to support combustion, so that the fuel is fully combusted, and the combustion efficiency is improved;
the thermal energy recovery system comprises: the heat exchanger is connected with the secondary combustion chamber, the heat exchanger is connected with a quench tower, the quench tower is connected with a ship-shaped ash bucket, the ship-shaped ash bucket is used for collecting and discharging generated ash, and the heat exchanger and the quench tower are respectively connected with a circulating cooling device;
the exhaust gas purification system includes: the Venturi reactor is connected with a flue jet reactor, the flue jet reactor is connected with a high-temperature cloth bag dust remover, and the high-temperature cloth bag dust remover is connected with an SCR low-temperature denitration reactor;
the Venturi type reactor is used for carrying out gas-liquid separation and removing acid gas (such as hydrogen chloride), the flue jet type reactor is used for completing deep deacidification and dioxin removal, tail gas dedusted by the high-temperature bag-type dust remover is denitrated by the SCR low-temperature denitration reactor, and dioxin and SO in the absorbed tail gas are removed2And acidic components such as HF, HCl, and NOx.
In practical application, the harmless treatment equipment for the hazardous waste further comprises: and the clean tail gas enters the chimney through the induced draft fan and is discharged to the atmosphere.
Wherein, on-line monitoring device is installed to the chimney, and tail gas passes through on-line monitoring device detects emission after reaching standard.
Specifically, the thermal energy recovery system further comprises: the temperature self-control device is used for cooling the flue gas at 1100-1200 ℃ to below 600 ℃ through the heat exchanger, and rapidly cooling the flue gas to 260 ℃ through the quench tower, so that part of heat energy is supplied to the kiln, and part of heat energy is used as energy of the flue gas heater, and part of heat energy is supplied to a living area.
Further, the fuel apparatus includes: the oil storage tank, the low heating value oil tank and the high heating value oil tank; the first outlet of the oil storage tank and the outlet of the low-calorific-value oil tank are respectively connected with the fuel inlet of the rotary kiln incinerator, and the second outlet of the oil storage tank and the outlet of the high-calorific-value oil tank are respectively connected with the fuel inlet of the second combustion chamber.
Still further, the circulation cooling device includes: the circulating water tank and the cooling water cooling tower are connected with the circulating water tank through a circulating water cooling pump.
In the harmless treatment equipment for the dangerous waste, the dangerous waste can be crushed by the material crusher and then is lifted by the material lifting machine, then the conveying belt is utilized to be added into the material bin, the material enters the rotary kiln incinerator and the secondary combustion chamber of the incineration system through the material distributor, the outlet of the secondary combustion chamber is connected with the slag remover, the high-temperature flue gas at the outlet above the secondary combustion chamber recovers heat energy through the heat exchanger, then the mixture enters a quench tower to be instantly cooled, a ship-shaped ash bucket collects discharged ash residues, the high-temperature mixed flue gas to be treated of the quench tower enters a Venturi type reactor to be subjected to gas-liquid separation and to remove hydrogen chloride and other acid gases, the pretreated gas enters a flue jet type reactor to complete deep deacidification and dioxin removal, and the tail gas dedusted by the high-temperature bag-type dust remover is denitrated by the SCR low-temperature denitration reactor, and finally dioxin and SO in the absorbed tail gas are removed.2Acid components such as HF, HCl and NOx, therefore the utility model provides a harmless treatment equipment for hazardous waste can fully burn the hazardous waste, after heat recovery, carries out a series of SOx denitration dust removal processing to tail gas, finally realizes harmless emission, and the whole process flow is high-efficient environmental protection, energy-conserving economy simultaneously; in addition, the equipment has the advantages of clean and efficient process, large treatment capacity, low investment and operation cost and wide application range, the volume and the water content of the treated slag are greatly reduced, the tail gas is clean and discharged, the waste heat is recycled, and the aims of harmless, quantitative reduction and recycling of dangerous wastes are fulfilled.
Drawings
FIG. 1 is a schematic view showing the structure of a facility for harmless treatment of hazardous waste according to the present invention;
fig. 2 shows a schematic flow diagram of a harmless treatment apparatus for hazardous waste in the present invention.
In the figure, the position of the upper end of the main shaft,
1-a material pretreatment system; 11-a material crusher; 12-a vibrating feeder; 13-material elevator; 14-a conveyor belt; 15-material bin; 16-a distributor; 17-bag dust collector;
2-an incineration system; 21-rotary kiln incinerator; 22-a second combustion chamber; 23-a slag remover;
3-a thermal energy recovery system; 31-a heat exchanger; 32-a quench tower; 33-boat type ash bucket;
4-a tail gas purification system; 41-a venturi reactor; 42-flue jet reactor; 43-high temperature bag dust collector; 44-SCR low-temperature denitration reactor;
5-a fuel device; 51-combustion-supporting fan;
6-a chimney; 61-induced draft fan.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
With reference to the attached drawings 1 to 2, a harmless treatment apparatus for hazardous waste according to a preferred embodiment of the present invention comprises: the system comprises a material pretreatment system 1, an incineration system 2, a heat energy recovery system 3 and a tail gas purification system 4;
the material pretreatment system 1 comprises a material crusher 11, the material crusher 11 corresponds to a material elevator 13 through a vibrating feeder 12, the material elevator 13 corresponds to a material bin 15 through a conveying belt 14, and material raised dust is purified by a bag-type dust collector 17 and then is emptied;
the incineration system 2 comprises a rotary kiln incinerator 21 connected with the material bin 15 through a distributor 16, the outlet of the rotary kiln incinerator 21 is connected with a secondary combustion chamber 22, the outlet of the secondary combustion chamber 22 is connected with a slag remover 23, and the inlets of the rotary kiln incinerator 21 and the secondary combustion chamber 22 are respectively connected with a fuel device 5 and are assisted by oxygen and compressed air introduced by a combustion fan 51 (such as a blower) to fully combust the fuel and improve the combustion efficiency;
the heat energy recovery system 3 comprises a heat exchanger 31 connected with the second combustion chamber 22, the heat exchanger 31 is connected with a quench tower 32, the quench tower 32 is connected with a ship-shaped ash bucket 33, the ship-shaped ash bucket 33 is used for collecting and discharging generated ash, and the heat exchanger 31 and the quench tower 32 are respectively connected with a circulating cooling device;
the tail gas purification system 4 comprises a venturi reactor 41 connected with the ship-shaped ash bucket 33, the venturi reactor 41 is connected with a flue jet reactor 42, the flue jet reactor 42 is connected with a high-temperature bag-type dust remover 43, and the high-temperature bag-type dust remover 43 is connected with an SCR low-temperature denitration reactor 44;
the venturi reactor 41 can be used for gas-liquid separation and removal of acid gases (e.g., hydrogen chloride), the flue jet reactor 42 can be used for deep deacidification and dioxin removal, and the tail gas dedusted by the high-temperature bag-type dust collector 43 is denitrated by the SCR low-temperature denitration reactor 44 to finally remove dioxin and SO in the absorbed tail gas2And acidic components such as HF, HCl, and NOx.
The utility model discloses an among the innocent treatment equipment for hazardous waste, hazardous waste can promote through vibrating feeder 12 and by material lifting machine 13 after 11 smashes through material crusher, then utilize conveyer belt 14 to add material storehouse 15, the material gets into rotary kiln incinerator 21 and two combustion chambers 22 that incineration system 2 was got into by distributing device 16, the exit linkage of two combustion chambers 22 has slagging-off machine 23, the high temperature flue gas of the top export of two combustion chambers 22 retrieves heat energy through heat exchanger 31, then get into quench tower 32 and cool down in the twinkling of an eye, ship type ash bucket 33 is collected the lime-ash and is arranged outward, the high temperature of quench tower 32 mixes the pending flue gas and gets into venturi reactor 41 and carries out gas-liquid separation and desorption hydrogen chloride and other acid gas, gas after the preliminary treatmentThe body enters a flue jet reactor 42 to complete deep deacidification and dioxin removal, and the tail gas dedusted by a high-temperature bag-type deduster 43 is denitrated by an SCR low-temperature denitration reactor 44 to finally remove dioxin and SO in the absorbed tail gas2And acidic components such as HF, HCl, and NOx.
It should supplement the explanation here, the utility model provides a innocent treatment equipment for hazardous waste can be directed against different kinds of hazardous waste, including industrial waste, medical waste and the domestic waste of all kinds of enterprises, like chemical industry waste residue, fatlute, organic waste liquid, acid-base solvent, high salt waste water, polymer waste and so on. The feeding adopts a rotary kiln incinerator centralized incineration disposal device without special requirements on the incinerated substances; solid, liquid and gas can all enter the furnace for incineration, and the treatment capacity is large; the waste is partially combusted in the rotary kiln, and the waste is partially pyrolyzed into combustible gas; the slag is completely burnt out in the kiln, and the slag ignition loss is almost zero; waste heat recovery device can produce the vapor of stable temperature and pressure, and the vapor of retrieving can not only satisfy this incineration disposal device's self demand, can also supply energy for daily production life, compares in the hot-blast recovery technology of heat energy exchange tower in the past, and the energy utilization is more abundant.
In practical application, as shown in fig. 1 and fig. 2, the harmless treatment apparatus for hazardous waste provided by the embodiment of the present invention may further include: and in the chimney 6, clean tail gas enters the chimney 6 through the induced draft fan 61 and is discharged to the atmosphere. Wherein, above-mentioned chimney 6 can install on-line monitoring device to tail gas just discharges after detecting up to standard through this on-line monitoring device. Specifically, the thermal energy recovery system 3 may further include: the temperature automatic control device can be used for cooling the flue gas at 1100-1200 ℃ to below 600 ℃ through the heat exchanger 31, rapidly cooling the flue gas to 260 ℃ through the quenching tower 32, and supplying part of heat energy to the kiln, using part of heat energy as energy of the flue gas heater and supplying part of heat energy to a living area. Further, as shown in fig. 1, the fuel device 5 may include: the oil storage tank, the low heating value oil tank and the high heating value oil tank; the first outlet of the oil storage tank and the outlet of the low heating value oil tank can be respectively connected with the fuel inlet of the rotary kiln incinerator 21, and the second outlet of the oil storage tank and the outlet of the high heating value oil tank can be respectively connected with the fuel inlet of the second combustion chamber 22. Still further, the above circulation cooling device may include: the circulating water tank and a cooling water cooling tower connected with the circulating water tank through a circulating water cooling pump.
More specifically, as shown in fig. 1 and fig. 2, in the harmless treatment equipment for hazardous waste provided in the embodiment of the present invention, the material pretreatment system 1 includes a material crusher 11 and a material elevator 13, and the hazardous waste is crushed by the material crusher 11 and then lifted by the material elevator 13 to enter the incineration system 2; two stages of sealing doors are arranged between the feeding bin of the distributing device 16 and the rotary kiln incinerator 21, one sealing door is arranged at the opening of the feeding bin and is driven by an electro-hydraulic push rod, so that the sealing performance of the feeding bin is ensured, and the negative pressure state of the incineration system 2 is prevented from being influenced by the entering of outside air; the second sealing door is arranged at the kiln head of the rotary kiln incinerator 21 and is mainly used for preventing the tempering in the kiln.
The incineration system 2 comprises a rotary kiln incinerator 21 and a secondary combustion chamber 22, wherein the rotary kiln incinerator 21 is arranged at a certain angle with the horizontal, the position of the kiln head is higher, an inlet material receiving and distributing device 16 is used for adding materials to be incinerated, the wall of the rotary kiln is connected with a driving motor, and the discharge end of the rotary kiln tail is connected with the secondary combustion chamber 22. The outlet end of the secondary combustion chamber 22 is provided with an air inlet and a slag outlet, the air inlet is connected with a combustion-supporting air pipe, the slag outlet is connected with a slag remover 23, the rotary kiln incinerator 21 and the secondary combustion chamber 22 are respectively connected with a fuel device 5, and oxygen and compressed air are introduced to support combustion, so that the combustion is sufficient, and the combustion efficiency is improved. The fuel device 5 comprises an oil storage tank, a low-heat-value oil tank and a high-heat-value oil tank, wherein a first outlet of the oil storage tank and an outlet of the low-heat-value oil tank are respectively connected with a fuel inlet of the rotary kiln incinerator 21, a second outlet of the oil storage tank and an outlet of the high-heat-value oil tank are respectively connected with a fuel inlet of the secondary combustion chamber 22, and waste low-heat-value cooling oil lubricating oil (namely waste oil) from other companies can be used as fuel to be burnt. The rotary kiln incinerator 21 and the secondary combustion chamber 22 are connected with a combustion fan 51 so as to input air and oxygen, fully combust the fuel and improve the combustion efficiency. In addition, the water content of the outlet slag is about 40-50% generally, and the average water content is 45%; in the embodiment, a set of water seal, slag discharge and drying integrated device is set, the slag is discharged and dried, steam generated by a boiler is used as a heat source, waste gas generated by drying enters the secondary combustion chamber 22 to be completely incinerated, the energy utilization rate is high, and the treatment effect is good.
The heat energy recovery system 3 comprises a heat exchanger 31, a quench tower 32, a ship-shaped ash bucket 33 and a temperature automatic control device, wherein the temperature of the flue gas at 1100-1200 ℃ is reduced to below 600 ℃ through the heat exchanger 31, the temperature is rapidly reduced to about 260 ℃ through the quench tower 32, and the generation of dioxin is avoided as much as possible. The heat exchanger 31 is a plate heat exchanger; part of the heat energy is supplied to the kiln, part of the heat energy is used as the energy of the flue gas heater, and part of the heat energy is supplied to the living area. The heat exchanger 31 and the quenching tower 32 are respectively connected with a circulating cooling system; the circulating cooling system comprises a circulating water tank and a cooling water cooling tower, wherein the cooling water cooling tower is connected with the circulating water tank through a circulating water cooling pump, and the outlet of the circulating water tank is respectively connected with the kiln head of the rotary kiln incinerator 21, the waste heat boiler and the quenching tower 32 through a quenching lifting water pump.
The tail gas purification system 4 includes a venturi reactor 41, a flue jet reactor 42, a high-temperature bag-type dust collector 43, and an SCR low-temperature denitration reactor 44. The high-temperature mixed flue gas from the quenching tower 32 enters a Venturi type reactor 41 for gas-liquid separation, and slaked lime powder Ca (OH) is utilized2Removing hydrogen chloride and other acid gases; the pretreated gas enters a flue jet reactor 42, and deep deacidification and dioxin removal are completed by using fine sodium bicarbonate powder and activated carbon powder; the tail gas after passing through the high-temperature bag-type dust collector 43 is denitrated by the SCR low-temperature denitration reactor 44, and dioxin and SO in the absorbed tail gas are finally removed2HF, HCl, NOx and other acidic components, and the tail gas after purification treatment is discharged into a chimney 6 through a draught fan 61.
The embodiment of the utility model provides a innocent treatment equipment for hazardous waste can also include electric automatic control system, and electric automatic control system includes control system and detecting system. The detection system feeds back the analysis result to the control system for timely adjustmentAnd (4) the whole operation parameters. The analytical index is CO and CO2、NOx、O2、SO2Flue gas, flue gas humidity and flow. The temperature detector, the pressure monitor, the flow monitor, the pH value detector, the variable frequency controller, the liquid level display and the like are respectively arranged at each detection point of the system. The flue gas enters an outlet of a chimney 6, and a sampling port and an online detection port are reserved in the flue and are used for continuously monitoring CO and CO in the discharged gas2、NOx、O2、SO2The concentration and the smoke concentration are monitored and discharged after meeting the environmental protection standard.
When in use, the material pretreatment system 1 sends different types of wastes into the rotary kiln incinerator 21 through the distributor 16, and homogenizes various types of materials. The homogenization pretreatment specifically comprises the following steps: (1) homogenizing the slurry material, heating to 60-70 deg.C in a storage tank, mechanically stirring to make the material have certain fluidity, and delivering into rotary kiln incinerator 21 by slurry pump; (2) the solid materials are crushed to be less than 2mm and are conveyed to a feeding port of a material bin 15 by a conveyor belt 14. Combustion-supporting fuel oil is provided by an oil storage tank and a low-calorific-value oil tank, flue gas (1000 ℃) of primary combustion of the rotary kiln incinerator 21 is sent into a secondary combustion chamber 22, and ash generated by the primary combustion is dried and discharged by a slag remover 23 below the secondary combustion chamber 22 and then is transported for treatment; the fuel oil in the second combustion chamber 22 is provided by an oil storage tank and a high-heat value oil tank, and the smoke (1000 ℃) is completely burned in the second combustion chamber 22 to generate secondary smoke (1100 ℃). The secondary flue gas (1100 ℃) enters the heat exchanger 31 from the flue gas outlet of the secondary combustion chamber 22, the heat energy is converted into hot water and steam through heat recovery and temperature reduction, one part of the recovered heat energy is supplied to the kiln head rotary kiln incinerator 21, and the other part of the recovered heat energy is supplied to a living area. After the cooled flue gas (600 ℃) enters the (flue gas) quenching tower 32 from the flue gas outlet of the waste heat boiler, the temperature is instantly reduced to 260 ℃ or below within 1-2 seconds under the action of the cooling liquid, so that the formation of dioxin is controlled, and the acid gas in the flue gas is preliminarily removed. Flue gas (260 ℃) enters a Venturi type reactor 41 from a flue gas outlet of a (tail gas) quenching tower 32, SO2, HCl, HF and other acidic pollutants in the flue gas are removed, then the flue gas enters a flue jet type reactor 42 for deep removal of dioxin and residual acidic substances, and then the flue gas is sprayed into a flue gas jet type reactor 42Particulate matters in the tail gas are removed by a high-temperature bag-type dust remover 43, and the deacidified and dedusted tail gas enters an SCR low-temperature denitration reactor 44 to remove NOx. The purified tail gas is conveyed to a chimney 6 by a draught fan 61, and a monitoring port is arranged at a proper height of the chimney 6 to detect CO and CO in the exhaust gas2、NOx、O2、SO2The concentration and the dust concentration of the dust are discharged into the atmosphere after reaching the discharge standard of the environmental protection requirement.
The first embodiment is as follows:
as a preferable scheme of the first embodiment, after being mixed and crushed, the hazardous waste is lifted to the material bin 15, and after being uniformly distributed by the distributing device 16, the hazardous waste enters the rotary kiln incinerator 21. The rotary kiln roller screw conveying device comprises a roller movably arranged in a kiln body and screw conveying blades arranged on the periphery of the roller, and two ends of the roller are respectively provided with a conical leading-in end and a conical leading-out end. The embodiment adopts the mode of annular separate chamber, slowly pushes the slag into the other end from one end of the roller through the spiral conveying blade, and has large dispersion area and excellent drying effect.
The second embodiment is as follows:
as a preferable mode of the second embodiment, the high-temperature flue gas after combustion is cooled by the heat exchanger 31 and the quenching tower 32, and is subjected to acid and dioxin removal by the venturi reactor 41 and the flue injection reactor 42, and then enters the high-temperature bag dust collector 43 for dust removal. The high-temperature bag-type dust collector 43 can stably operate for a long time at the temperature of 280 ℃, and the concentration of dust at the outlet meets the requirement of environmental protection and emission.
The third concrete embodiment:
as a preferable scheme of the third embodiment, the tail gas after dust removal enters the SCR low-temperature denitration reactor 44, and ammonia water with a concentration of 20% is atomized or gasified to be used as a reducing agent for denitration reaction. The inlet of the reactor is provided with an airflow uniform distribution device, and the inlet and the outlet of the reactor are provided with guide plates. The reactor adopts the multilayer arrangement mode to assemble low temperature catalyst, reaches more than 85% denitration efficiency under the temperature condition of 180 ℃, and the catalyst dress is in module component, is convenient for carry, installation and change.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A harmless treatment device for hazardous waste is characterized by comprising a material pretreatment system (1), an incineration system (2), a heat energy recovery system (3) and a tail gas purification system (4);
the material pretreatment system (1) comprises a material crusher (11), the material crusher (11) corresponds to a material elevator (13) through a vibrating feeder (12), the material elevator (13) corresponds to a material bin (15) through a conveying belt, and material raised dust is purified by a bag-type dust collector (17) and then is emptied;
the incineration system (2) comprises a rotary kiln incinerator (21) connected with the bottom of the material bin (15) through a distributor (16), an outlet of the rotary kiln incinerator (21) is connected with a secondary combustion chamber (22), and an outlet at the bottom of the secondary combustion chamber (22) is connected with a slag remover (23);
the heat energy recovery system (3) comprises a heat exchanger (31) connected with the secondary combustion chamber (22), the heat exchanger (31) is connected with a quenching tower (32), the bottom of the quenching tower (32) is connected with a ship-shaped ash bucket (33), and the heat exchanger (31) and the quenching tower (32) are respectively connected with a circulating cooling device;
the tail gas purification system (4) comprises a Venturi reactor (41) connected with the ship-shaped ash bucket (33), the Venturi reactor (41) is connected with a flue jet reactor (42), the flue jet reactor (42) is connected with a high-temperature bag-type dust collector (43), the high-temperature bag-type dust collector (43) is connected with an SCR low-temperature denitration reactor (44), the Venturi reactor (41) is used for carrying out gas-liquid separation and removing acid gas in gas, the flue jet reactor (42) is used for completing deep deacidification and dioxin removal of gas, the SCR low-temperature denitration reactor (45) is used for denitration of gas and finally removing absorption tail gasDioxins and SO in gas2、HF、HCl、NOx。
2. A harmless treatment apparatus for hazardous waste according to claim 1, further comprising: and the clean tail gas enters the chimney (6) through the induced draft fan (61) and is discharged to the atmosphere.
3. The facility for the innocent treatment of hazardous waste according to claim 2, wherein the chimney (6) is equipped with an on-line monitoring device, and exhaust gas is discharged after reaching standards through the on-line monitoring device.
4. The apparatus for the innocent treatment of hazardous waste according to claim 1, wherein the thermal energy recovery system (3) further comprises: the temperature self-control device is used for enabling the flue gas at 1100-1200 ℃ to pass through the heat exchanger and be cooled to below 600 ℃, and the flue gas is rapidly cooled to 260 ℃ through the quenching tower.
5. The facility for harmless treatment of hazardous waste according to claim 1, wherein the incineration system (2) further comprises a fuel device including an oil storage tank, a low heating value oil tank, and a high heating value oil tank;
the first outlet of the oil storage tank and the outlet of the low-calorific-value oil tank are respectively connected with the fuel inlet of the rotary kiln incinerator, and the second outlet of the oil storage tank and the outlet of the high-calorific-value oil tank are respectively connected with the fuel inlet of the second combustion chamber.
6. The facility for innocent treatment of hazardous waste according to claim 1, wherein the circulation cooling device comprises: the circulating water tank and the cooling water cooling tower are connected with the circulating water tank through a circulating water cooling pump.
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| CN202022541120.6U CN213746746U (en) | 2020-11-06 | 2020-11-06 | Harmless treatment equipment for hazardous waste |
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| CN202022541120.6U CN213746746U (en) | 2020-11-06 | 2020-11-06 | Harmless treatment equipment for hazardous waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669737A (en) * | 2021-09-07 | 2021-11-19 | 浙江树人学院（浙江树人大学） | Dry type waste incineration treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669737A (en) * | 2021-09-07 | 2021-11-19 | 浙江树人学院（浙江树人大学） | Dry type waste incineration treatment system |
| CN113669737B (en) * | 2021-09-07 | 2024-06-04 | 浙江树人学院（浙江树人大学） | Dry garbage incineration treatment system |
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Denomination of utility model: Harmless treatment equipment for hazardous waste Effective date of registration: 20230426 Granted publication date: 20210720 Pledgee: Hangzhou United Rural Commercial Bank Co.,Ltd. Dachuang town sub branch Pledgor: Hangzhou Yuanshuo Environmental Protection Technology Co.,Ltd. Registration number: Y2023980039109 |