Medical waste high-temperature digestion and pyrolysis incineration treatment system and method

Abstract

The application provides a medical waste high-temperature cooking and pyrolysis incineration treatment system, wherein the high-temperature cooking subsystem comprises a high-temperature cooking feeding machine, a sterilization device, a high-temperature cooking treatment pot, a hydrophobic tank and an alkali tank; the pyrolysis incineration subsystem comprises a pyrolysis incineration feeding machine, a pyrolysis incineration furnace, a waste heat boiler, a deacidification tower and a dust remover; a high-temperature steam conveying pipeline is arranged between the waste heat boiler and the high-temperature cooking treatment pot; and an atomizer at the top of the deacidification tower is connected with the bottom of the alkali tank through an alkali conveying pipeline. In addition, the application also provides a medical waste high-temperature cooking and pyrolysis incineration treatment method. The medical waste high-temperature cooking and pyrolysis incineration treatment system and method can realize full utilization of resources and energy in the process of medical waste pyrolysis incineration and high-temperature cooking, reduce the investment of the medical waste treatment system, reduce the treatment cost of waste liquid and waste gas, and has a wide popularization and application prospect.

Description

Technical Field

[0001] This invention belongs to the technical field of medical waste treatment, specifically relating to a high-temperature steam cooking and pyrolysis incineration treatment system and method for medical waste. Background Technology

[0002] Medical waste refers to waste generated by medical and health institutions during medical treatment, prevention, health care and other activities that has direct or indirect infectiousness, toxicity and other hazards. It is mostly infectious waste and trauma medical waste, but also includes pathological medical waste, pharmaceutical medical waste and chemical medical waste.

[0003] Existing methods for medical waste treatment mainly include high-temperature steam sterilization and pyrolysis incineration. Among these, high-temperature steam sterilization is more widely used in medical waste disposal in my country. This technology generates steam through high-temperature heating, destroying the surface structure of viruses and inactivating them, thus rendering them non-infectious. It is easy to operate, low in cost, and the treatment results are safe and reliable. However, high-temperature steam sterilization is only suitable for treating infectious and sharp medical waste, and the process requires an external steam supply. Furthermore, the generated odorous vapors and liquids still require separate treatment measures.

[0004] Pyrolysis incineration technology is suitable for disposing of most medical waste, providing thorough disinfection and sterilization. Current incineration processes often use waste heat boilers to exchange heat and cool the flue gas. However, the high-temperature steam generated after heat exchange by these boilers is relatively small in quantity and has low parameters, failing to meet the steam demands of generator sets and unsuitable for long-distance transportation and use. Most of this steam is directly discharged without being utilized effectively. Furthermore, the pyrolysis incineration of medical waste requires a flue gas purification system, which has high operating costs when used independently.

[0005] Therefore, optimizing and adjusting existing medical waste treatment processes and equipment to fully utilize resources and energy during the pyrolysis incineration and high-temperature cooking of medical waste, reduce investment in medical waste treatment systems, and lower the treatment costs of waste liquids and gases are urgent technical problems that need to be solved. Summary of the Invention

[0006] One of the objectives of this invention is to provide a high-temperature steam cooking and pyrolysis incineration system for medical waste that fully utilizes resources and energy in the medical waste treatment process, reduces investment in treatment equipment, and lowers treatment costs.

[0007] The second objective of this invention is to provide a method for treating medical waste by high-temperature steaming and synergistic pyrolysis incineration, which fully utilizes resources and energy in the treatment process, reduces investment in treatment equipment, and lowers treatment costs.

[0008] One of the technical solutions adopted by this invention to achieve its objective is to provide a high-temperature cooking and pyrolysis incineration treatment system for medical waste, comprising: a high-temperature cooking subsystem and a pyrolysis incineration subsystem; the high-temperature cooking subsystem includes: a high-temperature cooking feeder, a sterilization device, a high-temperature cooking pot, a condensate tank, and an alkali tank; the pyrolysis incineration subsystem includes: a pyrolysis incineration feeder, a pyrolysis incinerator, a waste heat boiler, a deacidification tower, and a dust collector; a high-temperature steam conveying pipeline is provided between the waste heat boiler and the high-temperature cooking pot; an atomizer is provided at the top of the deacidification tower, and the atomizer is connected to the bottom of the alkali tank through an alkali conveying pipeline.

[0009] Based on the above technical solution, the condensate tank is used to collect the gas and liquid generated by the high-temperature cooking pot, and the condensate tank is also connected to the alkali tank through the first connecting pipe.

[0010] Based on the above technical solution, the top of the high-temperature cooking pot is provided with a gas collection hood, and a steam valve is provided above the gas collection hood. The steam valve passes the gas generated by the high-temperature cooking pot into the condensate tank through a second connecting pipe. The bottom of the high-temperature cooking pot is connected to the condensate tank through a third connecting pipe.

[0011] Based on the above technical solution, an alkali pump is installed on the alkali delivery pipeline, a condensate pump is installed on the first connecting pipeline, a vacuum pump is installed on the second connecting pipeline, and a condensate valve is installed on the third connecting pipeline.

[0012] Based on the above technical solution, the sterilization device is a sterilization cart, the hydrophobic tank is a stainless steel hydrophobic tank, and the dust collector is a bag filter dust collector.

[0013] The second objective of this invention is achieved by providing a method for treating medical waste through high-temperature steam cooking and synergistic pyrolysis incineration, comprising the following steps:

[0014] S1. Based on the biochemical properties of medical waste, it is divided into medical waste A and medical waste B;

[0015] S2. The medical waste B is pyrolyzed and incinerated. The flue gas generated by the pyrolysis and incineration is used to generate high-temperature steam through a heat exchange device. The high-temperature steam is then used to cook the medical waste A at high temperature.

[0016] S3. Collect the gas and liquid generated during the high-temperature cooking process for the preparation of the alkaline solution;

[0017] S4. The alkaline solution is atomized to cool and semi-dry deacidify the flue gas after it has been treated by the heat exchange equipment in step S2.

[0018] Based on the above technical solution, medical waste A is infectious and / or damaging medical waste; medical waste B is medical waste with one or more of the following properties: chemical, pharmaceutical, and pathological.

[0019] Based on the above technical solution, step S2 includes: pyrolyzing and incinerating the medical waste B in a pyrolysis incinerator at a temperature of 950~1100℃; generating high-temperature steam at 140~220℃ through a waste heat boiler using the flue gas produced by the pyrolysis and incineration; and subjecting the medical waste A to high-temperature steaming after the high-temperature steam is de-cooled and depressurized; the temperature of the high-temperature steaming is 130~180℃.

[0020] Based on the above technical solution, step S3 includes: condensing the gas generated by the high-temperature cooking, mixing the condensed product with the liquid generated by the high-temperature cooking and collecting it in a hydrophobic tank for the preparation of alkali solution.

[0021] Based on the above technical solution, step S4 includes: pumping the alkaline solution to an atomizer at the top of the deacidification tower for atomization, and mixing the atomized product with the flue gas treated by the heat exchange equipment in step S2 to achieve flue gas cooling and semi-dry deacidification treatment.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The present invention provides a high-temperature cooking and pyrolysis incineration treatment system for medical waste, comprising a high-temperature cooking subsystem and a pyrolysis incineration subsystem, which are used to treat the classified medical waste in a targeted manner. The heat from the high-temperature flue gas generated by the pyrolysis incineration subsystem is processed by a waste heat boiler to generate high-temperature steam, which is directly utilized by the high-temperature cooking subsystem to cook the medical waste. Simultaneously, the gas and liquid generated by the high-temperature cooking subsystem are collected and used to prepare an alkaline solution, which is then used to perform secondary cooling and deacidification treatment on the heat-exchanged flue gas. This treatment system can achieve efficient utilization of high-temperature steam in the pyrolysis incineration process of medical waste, and can also achieve reasonable disposal and purification of odorous vapors and liquids generated during the high-temperature cooking process of medical waste.

[0024] (2) The present invention provides a method for treating medical waste by high-temperature steaming and synergistic pyrolysis incineration. This method utilizes the concept of classifying and co-treating medical waste, using the heat from the flue gas generated by pyrolysis incineration as the source of high-temperature steam for steaming. This facilitates the full utilization of the calorific value of medical waste incineration and reduces investment in steam boilers for the high-temperature steaming treatment system. Collecting the waste liquid generated by high-temperature steaming and using it as water for preparing alkali solution helps increase the temperature of the alkali solution, promoting the self-dissolution of solid alkali, reducing investment in stirring equipment, and facilitating the recovery and treatment of odorous gas and liquid. Using atomized alkali solution to treat the flue gas removes acidic substances such as hydrogen chloride from the medical waste incineration flue gas and prevents the flue gas from burning the filter bags of the baghouse dust collector. This also facilitates rapid cooling of the incineration flue gas and avoids the generation of dioxins. This method achieves full utilization of resources and energy during the pyrolysis incineration and high-temperature steaming process of medical waste, reduces investment in the medical waste treatment system, and lowers the treatment costs of waste liquid and gas. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a high-temperature steam cooking and pyrolysis incineration treatment system for medical waste provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic flowchart of a high-temperature steam cooking and pyrolysis incineration method for treating medical waste, provided in an embodiment of the present invention.

[0027] Among them, 1-high temperature cooking feeder; 2-sterilization device; 3-high temperature cooking treatment pot; 31-gas collection hood; 32-steam valve; 4-drain tank; 5-alkali tank; 6-pyrolysis incineration feeder; 7-pyrolysis incinerator; 8-waste heat boiler; 9-deacidification tower; 91-atomizer; 10-dust collector; 11-high temperature steam conveying pipeline; 12-alkali conveying pipeline; 13-first connecting pipeline; 14-second connecting pipeline; 15-third connecting pipeline; 16-alkali pump; 17-drain pump; 18-vacuum pump; 19-drain valve. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0030] The present invention will be further described below with reference to specific embodiments, but these are not intended to limit the scope of the invention.

[0031] Example 1

[0032] Please see Figure 1 This embodiment provides a high-temperature cooking and pyrolysis incineration treatment system for medical waste. The system includes a high-temperature cooking subsystem and a pyrolysis incineration subsystem. The high-temperature cooking subsystem includes a high-temperature cooking feeder 1, a sterilization device 2, a high-temperature cooking pot 3, a condensate tank 4, and an alkali tank 5. The pyrolysis incineration subsystem includes a pyrolysis incineration feeder 6, a pyrolysis incinerator 7, a waste heat boiler 8, a deacidification tower 9, and a dust collector 10. A high-temperature steam conveying pipeline 11 is provided between the waste heat boiler 8 and the high-temperature cooking pot 3. An atomizer 91 is provided at the top of the deacidification tower 9, and the atomizer 91 is connected to the bottom of the alkali tank 5 through an alkali conveying pipeline 12.

[0033] In this embodiment, the processing system includes a high-temperature cooking subsystem and a pyrolysis incineration subsystem. The high-temperature cooking subsystem is used to process infectious and sharps-causing medical waste (hereinafter referred to as Medical Waste A), which constitutes a large portion of medical waste. The pyrolysis incineration subsystem is used to process other types of medical waste, such as pharmaceutical, chemical, and pathological waste, which cannot be processed by high-temperature cooking (hereinafter referred to as Medical Waste B). After the medical waste is transported to the processing site via a transfer container, it is first sorted. Medical Waste A is fed into the sterilization device 2 via the high-temperature cooking feeder 1 of the high-temperature cooking subsystem, and then sterilized by cooking in the high-temperature cooking pot 3. Medical Waste B is fed into the pyrolysis incinerator 7 via the pyrolysis incineration feeder 6 of the pyrolysis incineration subsystem for pyrolysis incineration.

[0034] In this invention, high-temperature flue gas is generated after the incineration of medical waste B. The waste heat boiler 8 is used to treat this high-temperature flue gas through heat exchange, which reduces its temperature. The high-temperature steam generated by the waste heat boiler 8 is then directly transported via high-temperature steam pipeline 11 to the high-temperature cooking pot 3 of the high-temperature cooking subsystem for cooking and sterilizing medical waste A. This design fully utilizes the calorific value of medical waste incineration and helps reduce investment in the steam boiler of the high-temperature cooking system for medical waste.

[0035] In addition, during the high-temperature cooking process of medical waste A, the high-temperature cooking subsystem generates a large amount of odorous vapors and liquids. These vapors and liquids are collected using a condensate tank 4, and the collected liquid is then introduced into an alkali tank 5 for alkali preparation. The prepared alkali solution is then transported to a deacidification tower 9 and processed by an atomizer 91 located at the top of the tower to form atomized alkali solution. This atomized alkali solution reacts fully with the flue gas in the deacidification tower 9 of the pyrolysis incineration subsystem, removing acidic substances such as hydrogen chloride from the flue gas. Simultaneously, it rapidly lowers the flue gas temperature, preventing damage to the dust collector 10 from the high-temperature flue gas during subsequent flue gas purification processes (e.g., the bag filter being burned by the high-temperature flue gas), and also preventing the generation of dioxins.

[0036] Furthermore, the condensate tank 4 is used to collect the gas and liquid generated by the high-temperature cooking pot 3, and the condensate tank 4 is connected to the alkali tank 5 via the first connecting pipe 13. In this invention, the gas generated by the high-temperature cooking pot 3 mainly refers to the odorous vapor generated during the medical waste cooking process, and the liquid mainly refers to the odorous liquid generated during the medical waste cooking process.

[0037] Furthermore, the top of the high-temperature cooking pot 3 is provided with a gas collection hood 31, and a steam valve 32 is provided above the gas collection hood 31. The steam valve 32 passes the gas generated by the high-temperature cooking pot 3 into the condensate tank 4 through the second connecting pipe 14. The bottom of the high-temperature cooking pot 3 is connected to the condensate tank 4 through the third connecting pipe 15.

[0038] In this invention, the high-temperature cooking pot 3 is equipped with a gas collection hood 31 mainly because: after the high-temperature cooking process of medical waste is completed, the sterilized steam carries the odor of medical waste. By opening the steam valve 32 on the gas collection hood 31, the gas generated by the high-temperature cooking pot 3 is collected into the condensate tank 4 via the second connecting pipe 14. At the same time, the third connecting pipe 15 located at the bottom of the high-temperature cooking pot 3 also collects the odorous liquid generated during the high-temperature cooking process into the condensate tank 4, which is used as supplementary water for the preparation of alkali solution in the alkali solution tank 5.

[0039] The above setup offers two advantages: Firstly, by recycling the odorous vapor and liquid through the condensate tank 4, the pollution caused by their direct discharge to the environment is avoided, and the cost of secondary treatment is reduced. Secondly, since the odorous vapor and liquid themselves have a high temperature, using the mixture of the two in the preparation of alkali solution can increase the temperature of the water used for alkali solution preparation, which is beneficial for the dissolution of solid alkali. This reduces the speed and time required for mechanical stirring, thus saving energy.

[0040] Furthermore, an alkali pump 16 is installed on the alkali delivery pipeline 12, a condensate pump 17 is installed on the first connecting pipeline 13, a vacuum pump 18 is installed on the second connecting pipeline 14, and a condensate valve 19 is installed on the third connecting pipeline 15. By installing pumps in each connecting pipeline, it is convenient to control each reaction step and improve the delivery efficiency.

[0041] In this embodiment, the sterilization device 2 is a sterilization cart. Since infectious and hazardous medical waste constitutes a large proportion of medical waste, the high-temperature cooking feeder 1 feeds this type of medical waste into the sterilization cart. The sterilization cart moves as a whole into the high-temperature cooking pot 3 for subsequent sterilization steps, facilitating the transfer and transportation of medical waste, reducing unnecessary handling processes, saving time, and lowering the risk of medical waste contamination. Preferably, the sterilization cart is integrally welded from 304 stainless steel, with leak-free welds to ensure it can withstand temperature and pressure changes during steam treatment.

[0042] Furthermore, in this embodiment, the hydrophobic tank 4 is a stainless steel hydrophobic tank to prevent the alkaline solution from corroding the tank body and extend the service life of the equipment; the dust collector 10 is preferably a bag filter dust collector, which can effectively remove dust from the flue gas. At the same time, the temperature of the flue gas after treatment by the deacidification tower 9 is significantly reduced, which can also ensure the safe use of the bag filter dust collector and avoid burnout; more preferably, activated carbon can also be sprayed into the bag filter dust collector to adsorb dioxins.

[0043] The medical waste high-temperature cooking and pyrolysis incineration treatment system provided in this embodiment has a simple design, few auxiliary equipment, and high dust removal efficiency, which can significantly reduce the treatment cost of medical waste.

[0044] Example 2

[0045] Please see Figure 2 This embodiment provides a method for treating medical waste by high-temperature steam cooking combined with pyrolysis incineration, which includes the following steps:

[0046] S1. Based on the biochemical properties of medical waste, it is divided into medical waste A and medical waste B;

[0047] S2. The medical waste B is pyrolyzed and incinerated. The flue gas generated by the pyrolysis and incineration is used to generate high-temperature steam through a heat exchange device. The high-temperature steam is then used to cook the medical waste A at high temperature.

[0048] S3. Collect the gas and liquid generated during the high-temperature cooking process for the preparation of the alkaline solution;

[0049] S4. The alkaline solution is atomized to cool and semi-dry deacidify the flue gas after it has been treated by the heat exchange equipment in step S2.

[0050] Furthermore, medical waste A is infectious and / or damaging medical waste, such as syringes, infusion sets, waste from patients with infectious diseases, scalpels, and discarded blood samples; medical waste B is medical waste with one or more of the following properties: chemical, pharmaceutical, and pathological, such as mercury-containing sphygmomanometers, discarded drugs or vaccines, human tissues, and organs. In this invention, the classification method specifically refers to first screening out infectious and / or damaging medical waste as medical waste A, and then classifying the remaining medical waste as medical waste B.

[0051] Further, step S2 includes: pyrolyzing and incinerating the medical waste B in a pyrolysis incinerator 7 at a temperature of 950-1100°C; generating high-temperature steam at 140-220°C using the flue gas from the pyrolysis incineration through a waste heat boiler 8; and using the high-temperature steam to perform high-temperature sterilization on the medical waste A at a temperature of 130-180°C. This step utilizes the high-temperature steam generated by the waste heat boiler 8 to sterilize the medical waste A through high-temperature sterilization, thus achieving heat recovery and utilization. Preferably, the temperature of the high-temperature steam is 165°C, and the high-temperature sterilization temperature is 134°C.

[0052] Furthermore, step S3 includes: condensing the gas generated by the high-temperature cooking, mixing the condensed product with the liquid generated by the high-temperature cooking, and collecting the mixture in a hydrophobic tank 4 for the preparation of the alkaline solution. In this embodiment, the alkaline solution can be a NaOH solution with a mass concentration of 5-20%. Preferably, the mass concentration of the NaOH solution is 10%.

[0053] Furthermore, step S4 includes: sending the alkaline solution to the atomizer 91 at the top of the deacidification tower 9 via the alkaline solution pump 16 for atomization, and mixing the atomized product with the flue gas treated by the heat exchange equipment in step S2 to achieve cooling of the flue gas and semi-dry deacidification treatment.

[0054] In this step, the alkali solution in the alkali tank 5 is atomized by the alkali pump 16 and the atomizer 91 installed inside the deacidification tower 9. The atomized alkali solution reacts fully with the flue gas in the deacidification tower 9 to remove acidic substances such as hydrogen chloride from the flue gas. At the same time, the flue gas temperature drops rapidly, which can prevent the high-temperature bag filter bags from burning during the subsequent flue gas purification process and also prevent the generation of dioxins.

[0055] In summary, the medical waste high-temperature cooking and pyrolysis incineration treatment system and method provided by this invention reduces the need for steam systems (typically using natural gas steam boilers) and wastewater treatment systems for high-temperature cooking of medical waste. Taking a medical waste cooking treatment line with a processing capacity of 30 tons / day as an example, it can reduce fixed equipment investment costs by approximately 5 million yuan, save approximately 1 million cubic meters of natural gas per year, reduce carbon emissions by approximately 2.5 million tons per year, and reduce wastewater treatment costs by approximately 1 million yuan per year. This invention achieves full utilization of resources and energy in the pyrolysis incineration and high-temperature cooking process of medical waste, reduces investment in medical waste treatment systems, and lowers the treatment costs of waste liquids and gases, thus having broad prospects for promotion and application.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the content of this specification should be included within the protection scope of the present invention.

Claims

1. A high-temperature steam cooking and pyrolysis incineration system for medical waste, characterized in that, include: High-temperature cooking subsystem and pyrolysis incineration subsystem; The high-temperature cooking subsystem includes: a high-temperature cooking feeder (1), a sterilization device (2), a high-temperature cooking treatment pot (3), a condensate tank (4), and an alkali tank (5); the pyrolysis incineration subsystem includes: a pyrolysis incineration feeder (6), a pyrolysis incinerator (7), a waste heat boiler (8), a deacidification tower (9), and a dust collector (10). The high-temperature cooking pot (3) is provided with a gas collection hood (31) at the top, and a steam valve (32) is provided above the gas collection hood (31). The steam valve (32) passes the gas generated by the high-temperature cooking pot (3) into the condensate tank (4) through the second connecting pipe (14). The bottom of the high-temperature cooking pot (3) is connected to the condensate tank (4) through the third connecting pipe (15). The condensate tank (4) is used to collect the gas and liquid generated by the high-temperature cooking pot (3). The condensate tank (4) is also connected to the alkali tank (5) through the first connecting pipe (13). A high-temperature steam conveying pipe (11) is provided between the waste heat boiler (8) and the high-temperature cooking pot (3); an atomizer (91) is provided at the top of the deacidification tower (9), and the atomizer (91) is connected to the bottom of the alkali tank (5) through an alkali conveying pipe (12); an alkali pump (16) is provided on the alkali conveying pipe (12); the flue gas treated by the deacidification tower (9) enters the dust collector (10), which is a bag filter dust collector, and activated carbon is sprayed into the bag filter dust collector to adsorb dioxins in the flue gas.

2. The medical waste high-temperature cooking and pyrolysis incineration treatment system according to claim 1, characterized in that, A condensate pump (17) is installed on the first connecting pipe (13), a vacuum pump (18) is installed on the second connecting pipe (14), and a condensate valve (19) is installed on the third connecting pipe (15).

3. The medical waste high-temperature cooking and pyrolysis incineration treatment system according to claim 1, characterized in that, The sterilization device (2) is a sterilization cart, and the hydrophobic tank (4) is a stainless steel hydrophobic tank.

4. A method for treating medical waste using a high-temperature cooking and pyrolysis incineration system based on any one of claims 1-3, comprising the following steps: S1. Based on the biochemical properties of medical waste, it is divided into medical waste A and medical waste B; S2. The medical waste B is pyrolyzed and incinerated. The flue gas generated by the pyrolysis and incineration is used to generate high-temperature steam through a heat exchange device. The high-temperature steam is then used to cook the medical waste A at high temperature. S3. The gas generated by the high-temperature cooking is condensed, and the condensed product is mixed with the liquid generated by the high-temperature cooking and collected in the hydrophobic tank (4) for the preparation of alkaline solution. S4. The alkaline solution is sent to the atomizer (91) at the top of the deacidification tower (9) by the alkaline solution pump (16) for atomization. The atomized product is mixed with the flue gas treated by the heat exchange equipment in step S2 to achieve the cooling of the flue gas and semi-dry deacidification treatment.

5. The method for treating medical waste by high-temperature steam cooking and synergistic pyrolysis incineration according to claim 4, characterized in that, The medical waste A is infectious and / or damaging medical waste; the medical waste B is medical waste with one or more of the following properties: chemical, pharmaceutical, and pathological.

6. The method for treating medical waste by high-temperature steam cooking and synergistic pyrolysis incineration according to claim 4, characterized in that, Step S2 includes: pyrolyzing and incinerating the medical waste B in a pyrolysis incinerator (7) at a temperature of 950~1100℃, generating high-temperature steam of 140~220℃ through a waste heat boiler (8), and then using the high-temperature steam to perform high-temperature cooking on the medical waste A after de-cooling and de-pressure treatment; the temperature of the high-temperature cooking is 130~180℃.

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