CN212299016U - A medical waste pyrolysis incineration treatment system - Google Patents
A medical waste pyrolysis incineration treatment system Download PDFInfo
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- CN212299016U CN212299016U CN202020488449.8U CN202020488449U CN212299016U CN 212299016 U CN212299016 U CN 212299016U CN 202020488449 U CN202020488449 U CN 202020488449U CN 212299016 U CN212299016 U CN 212299016U
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Abstract
The utility model provides a medical waste pyrolysis incineration processing system belongs to medical waste treatment technical field, including the feed arrangement who sets gradually, an at least pyrolysis gasifier device, afterburner device, heat recovery utilizes the device, in the rapid cooling and the tower, the injection reactor, sack dust collector, spray the absorption tower, chimney and main control center, the pyrolysis burns under sealed condition, in the rapid cooling and the deacidification and the dust removal thoroughly become to purify gaseous exhaust, simultaneously with the linkage of heat recovery utilizes a large amount of heats that the system produced in addition recycle, reduced the operation cost. The utility model discloses technical scheme can realize automated control, continuous steady operation, and heat recovery utilization rate is high, and no harmful gas and material discharge, energy saving and consumption reduction, safe and reliable, economic benefits is good.
Description
Technical Field
The utility model relates to a refuse treatment technical field especially relates to a medical waste pyrolysis incineration disposal system.
Background
In the emergency period that the novel coronavirus epidemic situation causes a great sudden public health incident, a large amount of medical resources are used by the country, a great amount of medical wastes are generated at the same time, and the harmless treatment of the medical wastes is required to be carried out immediately, for example, a larger disaster is caused by improper treatment.
At present, the treatment methods of medical waste mainly include a sanitary landfill method, a high-temperature incineration method, a pressure steam sterilization method, a chemical sterilization method, an electromagnetic wave sterilization method, a pyrolysis method, a plasma method, and the like.
As the medical waste mainly comprises organic hydrocarbon, contains more combustible components and has high calorific value, the incineration treatment mode has complete feasibility. The incineration treatment is a chemical process of deep oxidation, under the action of high-temperature flame, medical waste in the incineration equipment is converted into residue and gas through three stages of drying, ignition and incineration, and the infection source and harmful substances in the medical waste can be effectively destroyed in the incineration process. The incineration technology is suitable for various infectious medical wastes, and during incineration, conditions such as higher and stable furnace temperature in the incinerator, good oxygen mixing working condition, sufficient gas residence time and the like are required, and simultaneously, the finally discharged smoke and residues need to be subjected to harmless treatment.
However, the conventional high-temperature incineration of medical wastes is carried out through an independent incinerator, so that the degree of automation is low, continuous treatment cannot be carried out, harmless treatment is insufficient, and heat generated in the treatment process is not well recycled, thereby causing great waste.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model discloses a medical waste pyrolysis incineration treatment system, which comprises a feeding device, at least one pyrolysis gasification furnace device, a secondary combustion chamber device, a heat recovery device, a quenching neutralization tower, a jet reactor, a cloth bag dust removal device, a spray absorption tower, a chimney and a main control center which are arranged in sequence;
the feeding device comprises a lifting track, a speed reducing motor, a hopper and a sealing cover, wherein the lifting track is arranged in the sealing cover, and the speed reducing motor is connected with the hopper through a steel wire rope and drives the hopper to move up and down along the lifting track;
the pyrolysis gasification furnace device comprises a gasification furnace cylinder, an air suction cover, an air suction pipe, a first combustor and a primary air blower, wherein the gasification furnace cylinder is a vertical cylindrical cylinder, the top of the gasification furnace cylinder is provided with a feed port, the side part of the gasification furnace cylinder is provided with a discharge port, the bottom of the gasification furnace cylinder is provided with an air supply port, the feed port is used for receiving medical waste materials conveyed by the feeding device, the air supply port is connected with the primary air blower, the bottom of the air suction cover is connected with the upper end of the gasification furnace cylinder, the top of the air suction cover is connected with the air suction pipe;
the secondary combustion chamber device is connected with a discharge port of the pyrolysis gasification furnace device and comprises a combustion chamber, a second combustor and a secondary air blower, wherein the second combustor is arranged on one side of the combustion chamber, the bottom of the combustion chamber is connected with the secondary air blower, and an emergency discharge chimney is arranged at the top of the combustion chamber;
the heat recovery and utilization device comprises a heat exchange boiler, the upper part of the heat exchange boiler is provided with a gas inlet, the lower part of the heat exchange boiler is provided with a gas outlet, the gas inlet is connected with the secondary combustion chamber device, and the gas outlet is connected with the quenching and neutralizing tower;
the quenching and neutralizing tower comprises a neutralizing tower body, an alkali liquor supply device and a circulation nozzle, wherein the neutralizing tower body is of a cylinder structure, the inner wall of the neutralizing tower body is made of acid-resistant, alkali-resistant and refractory materials, the top of the cylinder structure is provided with the circulation nozzle, and the circulation nozzle sprays the alkali liquor conveyed by the alkali liquor supply device into the neutralizing tower body through compressed air provided by a compressed air machine;
the injection reactor comprises an injection nozzle device, a lime feeding device and an active carbon feeding device, and the injection nozzle device is connected with the lime feeding device and the active carbon feeding device;
the bag-type dust removal device comprises a bag-type dust remover, wherein the bag-type dust remover is provided with an input port and an output port, the input port is connected with the injection reactor, the output port is connected with the spray absorption tower, a bypass smoke pipe is arranged between the input port and the output port, a pulse cleaner for cleaning the filter bag is arranged in the bag-type dust remover, the bag-type dust remover is also provided with a heater, and the heater is provided with a temperature controller;
the spraying absorption tower comprises at least one absorption tower body, the lower end of the absorption tower body is connected with an output port of the bag-type dust remover through an induced draft fan, a shower head is arranged in the absorption tower body, and the shower head sprays neutralized alkali liquor in an alkali liquor circulating pool into the absorption tower body through a spraying pump;
the chimney is connected with the output end of the absorption tower body and used for discharging tail gas outwards;
the main control center is electrically connected with the feeding device, the at least one pyrolysis gasification furnace device, the secondary combustion chamber device, the heat recycling device, the quenching neutralization tower, the injection reactor, the cloth bag dust removal device and the spray absorption tower, and comprises a control unit, a monitoring unit and an alarm unit, wherein the monitoring unit is connected with the control unit.
Further, the pyrolysis gasification furnace device also comprises a water circulation cooling unit arranged on the gasification furnace cylinder, and the water circulation cooling unit is used for cooling the temperature of the gasification furnace cylinder.
Further, the secondary combustion chamber device also comprises an explosion-proof device arranged at the bottom of the combustion chamber, and the explosion-proof device is used for opening and releasing pressure when the pressure in the combustion chamber exceeds a preset value.
Furthermore, an automatic control valve connected with the main control center is arranged at the bottom of the emergency discharge chimney, and the automatic control valve is used for automatically opening the valve to enable the combustion chamber to be communicated with the emergency discharge chimney when power is off.
Furthermore, a thermocouple is arranged at the smoke outlet of the combustion chamber and is connected with a temperature controller, and the temperature controller is connected with a second combustor and is used for controlling the combustion temperature in the combustion chamber.
Further, medical waste pyrolysis incineration processing system is still including connecting respectively the oil supply unit of first combustor and second combustor, oil supply unit includes the oil storage tank and connects the oil pump of oil storage tank, be equipped with the filter in the oil storage tank.
The utility model discloses a medical waste pyrolysis incineration treatment method, which comprises the following steps:
s1, feeding: the medical waste is put into a hopper, moved upwards along a lifting track and poured into a feeding hole of a gasification furnace cylinder of a pyrolysis gasification furnace device, and the upward movement and the material pouring of the medical waste are both carried out in a sealing cover;
s2, pyrolysis and gasification: the medical waste in the gasification furnace barrel is combusted and supported by the combustor, the combustor stops working when the medical waste keeps self-combustion, the medical waste is decomposed and gasified into combustible gas at the temperature of 100-500 ℃ in the gasification furnace barrel and is discharged from a discharge port, and the generated residual ash is discharged from the lower end;
s3, secondary high-temperature combustion: introducing combustible gas into a combustion chamber, and combusting by combustion supporting of a jet combustion furnace and oxygen supply through air supply, so that the combustible gas generates high-temperature flue gas after being combusted in the combustion chamber in a vortex mode, the temperature in the combustion chamber is more than 1100 ℃, and the residence time of the combustible gas in the combustion chamber is more than 2 seconds;
s4, quenching and neutralizing: introducing the high-temperature flue gas into a quenching and neutralizing tower, and carrying out neutralization chemical reaction on the alkali liquor and the high-temperature flue gas which are prepared at normal temperature in a spraying mode to output tail gas with the temperature of 190-220 ℃;
s5, deacidifying: introducing the tail gas into a dry reaction device to fully contact and react with lime powder and active carbon so as to remove acid gas, wherein the basic reaction formula is as follows:
SO3+Ca(OH)2＝CaSO4+H2O
SO2+Ca(OH)2＝CaSO3+H2O
2HCl+Ca(OH)2＝CaCl2+2H2O
2HF+Ca(OH)2＝CaF2+2H2O；
s6, dust removal: and the deacidified tail gas enters a bag-type dust collector to remove dust, and is discharged into the atmosphere through a draught fan and a chimney.
Further, the step between the step S3 and the step S4 includes the steps of:
s34, heat energy recycling: the high-temperature combustible gas and water are subjected to heat exchange through the heat exchanger, so that the high-temperature combustible gas is cooled to 500 ℃ on one hand, and the heated hot water is used for heat supply on the other hand.
Further, the method also comprises the following steps:
s7: wet deacidification: introducing the tail gas after dust removal into at least one spray absorption tower to spray alkali liquor for deacidification, wherein harmful components in the tail gas are adsorbed on the surface of the alkali liquor (NaoH) and generate neutralization reaction with NaOH to generate solid salts, and the basic reaction formula is as follows:
2SO2+O2+4NaOH—→2Na2SO4+2H2O
HCl+NaOH—→NaCl+H2O。
further, the method also comprises the following steps:
s8: and (3) tail gas detection: the method comprises the steps of detecting the discharged tail gas before the tail gas is discharged into the atmosphere, wherein detection parameters comprise temperature, humidity, flow, dust particles, CO2, CO, HCL, SO2, NO2 and the like.
Implement the utility model provides a medical waste pyrolysis incineration disposal system has following profitable technological effect:
the utility model discloses technical scheme can realize automated control, continuous steady operation, and heat recovery utilization rate is high, and no harmful gas and material discharge, energy saving and consumption reduction, safe and reliable, economic benefits is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a medical waste pyrolysis and incineration treatment system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention is a medical waste pyrolysis incineration treatment system, including a feeding device 1, a first pyrolysis gasification furnace device 2a, a second pyrolysis gasification furnace device 2b, a secondary combustion chamber device 3, a heat recycling device 4, a quenching neutralization tower 5, a jet reactor 6, a cloth bag dust collector 7, a spray absorption tower 8, a chimney 9, and a main control center, which are sequentially arranged.
The feeding device 1 comprises a lifting track 11, a speed reducing motor 12, a hopper 13 and a sealing cover 14, wherein the lifting track 11 is arranged in the sealing cover 14, the speed reducing motor 12 is connected with the hopper 13 through a steel wire rope 15, and drives the hopper 13 to move up and down along the lifting track 11.
The first pyrolysis gasification furnace device 2a comprises a gasification furnace cylinder 21, an air suction cover 22, an air suction pipe 23, a first combustor 24 and a primary air blower 25, wherein the gasification furnace cylinder 21 is a vertical cylindrical cylinder, a feed port 211 is arranged at the top of the gasification furnace cylinder, a discharge port 212 is arranged at the lateral part of the gasification furnace cylinder, an air supply port 213 is arranged at the bottom of the gasification furnace cylinder, the feed port 211 is used for receiving medical waste materials conveyed by the feeding device 1, the air supply port 213 is connected with the primary air blower 25, the bottom of the air suction cover 22 is connected with the upper end of the gasification furnace cylinder 21, the top of the air suction cover 22 is connected with the air suction pipe 23.
The second pyrolysis gasification furnace device 2b is arranged in parallel with the first pyrolysis gasification furnace device 2a, and can be used simultaneously or opened one of them, so that alternate maintenance is facilitated.
The discharge gate of first pyrolysis gasifier device 2a and second pyrolysis gasifier device 2b is connected to after-burning room device 3, and wherein, first pyrolysis gasifier device 2a includes combustion chamber 31, second combustor 32 and secondary air-blower 33, combustion chamber 31 one side is equipped with second combustor 32, secondary air-blower 33 is connected to combustion chamber 31 bottom, and combustion chamber 31 top is equipped with emergent emission chimney 34.
The heat recovery and utilization device 4 comprises a heat exchange boiler 41, wherein the upper part of the heat exchange boiler 41 is provided with a gas inlet 411, the lower part of the heat exchange boiler 41 is provided with a gas outlet 412, the gas inlet 411 is connected with the secondary combustion chamber device 3, and the gas outlet 412 is connected with the quenching and neutralizing tower 5.
The quenching and neutralizing tower 5 comprises a neutralizing tower body 51, an alkali liquor supply device and a circulation nozzle 52, wherein the neutralizing tower body 51 is of a cylinder structure, the inner wall of the neutralizing tower body 51 is made of acid-resistant, alkali-resistant and refractory materials, the circulation nozzle 52 is arranged at the top of the cylinder structure, and the circulation nozzle 52 sprays the alkali liquor conveyed by the alkali liquor supply device into the neutralizing tower body 51 through compressed air provided by a compressed air machine 53.
The injection reactor 6 comprises an injection nozzle device 61, a lime feeding device 62 and an active carbon feeding device 63, wherein the injection nozzle device 61 is connected with the lime feeding device 62 and the active carbon feeding device 63.
The bag-type dust removing device 7 comprises a bag-type dust remover 71, the bag-type dust remover 71 is provided with an input port 711 and an output port 712, the input port 711 is connected with the injection reactor 6, the output port 712 is connected with the spray absorption tower 8, a bypass smoke pipe 72 is arranged between the input port 711 and the output port 712, a pulse cleaner 73 for cleaning the filter bag is arranged in the bag-type dust remover 71, the pulse cleaner 73 adopts compressed air and blows out from the back of the filter bag to enable smoke dust to fall off, so that dioxin can be effectively prevented from being generated, the service life of the filter cloth is prolonged, the bag-type dust remover 71 is further provided with a heater 74, and the heater 74.
The spray absorption tower 8 comprises at least one absorption tower body 81, the lower end of the absorption tower body 81 is connected with the output port 712 of the bag-type dust collector 71 through the induced draft fan 82, a shower head 83 is arranged in the absorption tower body 81, the shower head 83 sprays the neutralizing alkali liquor in the alkali liquor circulating pool 85 to the absorption tower body 81 through the spray pump 84, and the alkali liquor is used for spraying and absorbing acid gas and harmful substances.
The chimney 9 is connected with the output end of the absorption tower body 81 and used for discharging tail gas outwards.
The main control center is electrically connected with the feeding device 1, the first pyrolysis gasification furnace device 2a, the second pyrolysis gasification furnace device 2b, the secondary combustion chamber device 3, the heat recycling device 4, the quenching neutralization tower 5, the injection reactor 6, the cloth bag dust removal device 7 and the spray absorption tower 8, and comprises a control unit, a monitoring unit and an alarm unit, wherein the monitoring unit is connected with the control unit.
According to a specific embodiment, the first pyrolysis gasifier apparatus 2a further includes a water circulation cooling unit 26 disposed on the gasifier barrel 21, and the water circulation cooling unit 26 is used for temperature cooling of the gasifier barrel.
According to a specific embodiment, the secondary combustion chamber assembly 3 further comprises an explosion-proof device arranged at the bottom of the combustion chamber 31, said explosion-proof device being adapted to open and release pressure when the pressure in the combustion chamber exceeds a predetermined value.
According to a specific embodiment, the bottom of the emergency exhaust stack 34 is provided with an automatic control valve connected to the main control center, and the automatic control valve is used for automatically opening the valve to communicate the combustion chamber 31 with the emergency exhaust stack 34 when power is cut off.
According to a specific embodiment, the smoke outlet of the combustion chamber 31 is provided with a thermocouple, the thermocouple is connected with a temperature controller, and the temperature controller is connected with a second combustor for controlling the combustion temperature in the combustion chamber.
According to a specific embodiment, the medical waste pyrolysis incineration treatment system further comprises an oil supply device 10 connected with the first burner and the second burner respectively, wherein the oil supply device 10 comprises an oil storage tank 101 and an oil pump 102 connected with the oil storage tank 101, and a filter is arranged in the oil storage tank 101.
The embodiment of the utility model provides a medical waste pyrolysis incineration disposal method, including the step:
s1, feeding: the medical waste is put into a hopper, moved upwards along a lifting track and poured into a feeding hole of a gasification furnace cylinder of a pyrolysis gasification furnace device, and the upward movement and the material pouring of the medical waste are both carried out in a sealing cover;
s2, pyrolysis and gasification: the medical waste in the gasification furnace barrel is combusted and supported by the combustor, the combustor stops working when the medical waste keeps self-combustion, the medical waste is decomposed and gasified into combustible gas at the temperature of 100-500 ℃ in the gasification furnace barrel and is discharged from a discharge port, and the generated residual ash is discharged from the lower end;
s3, secondary high-temperature combustion: introducing combustible gas into a combustion chamber, and combusting by combustion supporting of a jet combustion furnace and oxygen supply through air supply, so that the combustible gas generates high-temperature flue gas after being combusted in the combustion chamber in a vortex mode, the temperature in the combustion chamber is more than 1100 ℃, and the residence time of the combustible gas in the combustion chamber is more than 2 seconds;
s34, heat energy recycling: the high-temperature combustible gas and water are subjected to heat exchange through a heat exchanger, so that the high-temperature combustible gas is cooled to 500 ℃ on one hand, and the heated hot water is used for heat supply;
s4, quenching and neutralizing: introducing the high-temperature flue gas into a quenching and neutralizing tower, and carrying out neutralization chemical reaction on the alkali liquor and the high-temperature flue gas which are prepared at normal temperature in a spraying mode to output tail gas with the temperature of 190-220 ℃;
s5, deacidifying: introducing the tail gas into a dry reaction device to fully contact and react with lime powder and active carbon so as to remove acid gas, wherein the basic reaction formula is as follows:
SO3+Ca(OH)2＝CaSO4+H2O
SO2+Ca(OH)2＝CaSO3+H2O
2HCl+Ca(OH)2＝CaCl2+2H2O
2HF+Ca(OH)2＝CaF2+2H2O；
s6, dust removal: the deacidified tail gas enters a bag-type dust collector to remove dust, and is discharged into the atmosphere through a draught fan and a chimney;
s7: wet deacidification: introducing the tail gas after dust removal into at least one spray absorption tower to spray alkali liquor for deacidification, wherein harmful components in the tail gas are adsorbed on the surface of the alkali liquor (NaoH) and generate neutralization reaction with NaOH to generate solid salts, and the basic reaction formula is as follows:
2SO2+O2+4NaOH—→2Na2SO4+2H2O
HCl+NaOH—→NaCl+H2O；
s8: and (3) tail gas detection: the method comprises the steps of detecting the discharged tail gas before the tail gas is discharged into the atmosphere, wherein detection parameters comprise temperature, humidity, flow, dust particles, CO2, CO, HCL, SO2, NO2 and the like.
Implement the utility model provides a medical waste pyrolysis incineration disposal system has following profitable technological effect:
the utility model discloses technical scheme can realize automated control, continuous steady operation, and heat recovery utilization rate is high, and no harmful gas and material discharge, energy saving and consumption reduction, safe and reliable, economic benefits is good.
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.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664945A (en) * | 2021-01-15 | 2021-04-16 | 清华大学 | Reaction device of medical waste treatment equipment and operation method |
| CN113494713A (en) * | 2020-04-03 | 2021-10-12 | 新疆贝肯能源环保有限公司 | Medical waste pyrolysis incineration treatment system and treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494713A (en) * | 2020-04-03 | 2021-10-12 | 新疆贝肯能源环保有限公司 | Medical waste pyrolysis incineration treatment system and treatment method |
| CN113494713B (en) * | 2020-04-03 | 2024-11-08 | 新疆贝肯能源环保有限公司 | A medical waste pyrolysis and incineration treatment system and treatment method |
| CN112664945A (en) * | 2021-01-15 | 2021-04-16 | 清华大学 | Reaction device of medical waste treatment equipment and operation method |
| CN112664945B (en) * | 2021-01-15 | 2025-02-11 | 清华大学 | Reaction device and operation method of medical waste treatment equipment |
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Address after: 834000 No. 4, Jiannan Road, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Shiling Energy and Environmental Protection Group Co.,Ltd. Country or region after: China Address before: 834007 real estate compound of oil testing office, Sanping Town, Baijiantan District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang beiken energy environmental protection Co.,Ltd. Country or region before: China |