JP2007093132A - Infective medical waste treatment method - Google Patents
Infective medical waste treatment method Download PDFInfo
- Publication number
- JP2007093132A JP2007093132A JP2005284297A JP2005284297A JP2007093132A JP 2007093132 A JP2007093132 A JP 2007093132A JP 2005284297 A JP2005284297 A JP 2005284297A JP 2005284297 A JP2005284297 A JP 2005284297A JP 2007093132 A JP2007093132 A JP 2007093132A
- Authority
- JP
- Japan
- Prior art keywords
- melting
- medical waste
- incineration
- exhaust gas
- treatment method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
本発明は、医療施設等で排出される注射器、点滴器具、ガーゼ・包帯等、細菌で汚染された虞のある各種廃棄物(感染性医療廃棄物)を処分できるように減菌処理するための感染性医療廃棄物処理方法に関するものである。 The present invention is for sterilizing so that various types of waste (infectious medical waste) that may be contaminated with bacteria, such as syringes, infusion devices, gauze / bandages, etc. discharged at medical facilities, etc. can be disposed of. The present invention relates to a method for treating infectious medical waste.
従来より、上述の感染性医療廃棄物の滅菌処理として、焼却処理や薬物処理、或いは高温高圧の蒸気処理等、各種の処理方法が知られている。 Conventionally, as a sterilization process for the infectious medical waste described above, various processing methods such as an incineration process, a drug process, and a high temperature / high pressure steam process are known.
上記処理方法の内、焼却による滅菌処理は、図2に示すように、感染性医療廃棄物を炉内温度800〜900℃にて燃焼する焼却行程、燃焼により生じた焼却灰を1300〜1500℃の溶融炉にて溶融してスラグ化する溶融行程、焼却行程および溶融行程において発生した有害な排ガスを無臭・無煙化(無害化)して大気中に放出する排ガス処理行程を備える。尚、このような焼却処理による感染性医療廃棄物処理装置として例えば、特許文献1が開示されている。 Among the above-mentioned treatment methods, as shown in FIG. 2, the sterilization treatment by incineration is an incineration process in which infectious medical waste is burned at a furnace temperature of 800 to 900 ° C., and incineration ash generated by the combustion is 1300 to 1500 ° C. A melting process for melting into a slag by a melting furnace, an incineration process, and an exhaust gas treatment process for releasing harmful exhaust gas generated in the melting process to the atmosphere after odorless and smokeless (detoxification). For example, Patent Document 1 is disclosed as an infectious medical waste treatment apparatus using such incineration treatment.
ところで、焼却による滅菌処理の場合、感染性医療廃棄物の内の布類(ガーゼや包帯等)や紙類等の可燃物は焼却行程において確実に焼却されるが、難燃物である塩ビチューブ、点滴器具等のようなプラスチック類は燃焼し難いため、焼却灰中には不燃物であるガラス類(注射器等)や金属類(注射針等)等と共に難燃物の未燃分も多く残存している。
従来、焼却灰の溶融熱源として、主としてバーナによる加熱が行われているが、本来バーナによる加熱は燃焼性が悪いため、燃焼条件が悪く溶融炉に火が十分に回りきれないと、上述した焼却灰中の難燃物の未燃分は灰溶融行程においても確実に燃焼させることができずに残存する場合が多い。焼却灰に未燃分が残存している状態では溶融後に廃棄されるスラグの量が増大すると共に、この未燃分は感染ウイルス類が生存し得る状態にあることから、細菌に汚染されたスラグが外部に排出される虞があり、衛生面、環境汚染の面で問題となる。
By the way, in the case of sterilization by incineration, combustible materials such as cloth (gauze, bandages, etc.) and paper in infectious medical waste are surely incinerated in the incineration process, but PVC tube is a flame retardant. Because plastics such as infusion devices are difficult to burn, a large amount of unburned flame retardant remains in the incinerated ash together with non-flammable glass (syringe, etc.) and metals (injection needle, etc.). is doing.
Conventionally, heating by a burner is mainly used as a melting heat source of incineration ash, but since the heating by the burner is inherently poor in flammability, if the combustion conditions are bad and the fire does not sufficiently reach the melting furnace, the incineration described above In many cases, the unburned portion of the flame-retardant material in the ash remains without being reliably burned even in the ash melting process. When unburned ash remains in the incineration ash, the amount of slag discarded after melting increases and the unburned slag is in a state where infectious viruses can survive. May be discharged to the outside, which is problematic in terms of hygiene and environmental pollution.
このため、従来では、溶融炉のバーナ装置に必要以上の燃焼用空気を供給して炉内の燃焼を活性化することにより、この未燃分を確実に燃焼させるようにしていたが、燃焼空気を過剰に供給し過ぎると、逆に溶融温度が低下してしまうという弊害もあり、よって、適正溶融温度(1300〜1500℃)を維持するためにさらに多量の助燃材(例えば、LPG、灯油等の化石燃料)と燃焼空気を供給せざるを得なかった。この結果、溶融行程において発生する排ガスは膨大な量となり、これを無害化するための排ガス処理施設も必然的に大規模なものとなっていた。
本発明は、係る問題に鑑み成されたもので、プラスチック類のような難燃性の医療廃棄物も確実に焼却・溶融してスラグ化できる好ましい感染性医療廃棄物処理方法を提供することを目的としている。 The present invention has been made in view of the above problems, and provides a preferable infectious medical waste treatment method capable of reliably incinerating and melting flame retardant medical waste such as plastics to form slag. It is aimed.
すなわち、請求項1に記載の本発明は、感染性医療廃棄物を焼却する焼却行程、および、プラズマ加熱装置による加熱雰囲気下において助燃材を燃焼させて、焼却灰に残存する難燃物の未燃分を加熱・燃焼すると共に不燃物を加熱・溶融してスラグ化する溶融行程、および前記焼却行程および溶融行程にて発生した有害ガスを無害化する排ガス処理工程を有することを特徴としている。 That is, the present invention according to claim 1 is a method for incinerating infectious medical waste, and burning an auxiliary combustible material in a heating atmosphere by a plasma heating device, so that the incombustible material remaining in the incineration ash is not yet removed. It is characterized by having a melting process for heating and burning the fuel, heating and melting incombustibles to form slag, and an exhaust gas treatment process for detoxifying harmful gases generated in the incineration process and the melting process.
また、請求項2に記載の本発明は、請求項1に記載の感染性医療廃棄物処理方法において、1300℃〜1500℃の加熱雰囲気により、前記溶融行程を行うことを特徴としている。 Moreover, the present invention described in claim 2 is characterized in that in the infectious medical waste treatment method according to claim 1, the melting step is performed in a heated atmosphere of 1300 ° C to 1500 ° C.
本発明によれば、焼却灰の溶融熱源としてプラズマ加熱装置を用いたので、高温の熱プラズマ流により助燃材の燃焼性が大幅に向上し、焼却灰に残存する難燃物の未燃分も全て加熱・燃焼されることになり、スラグの大幅な減量化が図れると共に、燃焼性の向上により助燃材の供給量を大幅に削減することができ、その分、経済的負担を軽減できる。
また、このことにより、溶融行程で発生する排ガス量が削減されるため、排ガス処理工程を簡略化でき、排ガス処理施設の規模縮小に貢献できる。
According to the present invention, since the plasma heating apparatus is used as the melting heat source of the incineration ash, the combustion property of the auxiliary combustible material is greatly improved by the high-temperature thermal plasma flow, and the unburned content of the incombustible material remaining in the incineration ash is also increased. All of them will be heated and combusted, so that the amount of slag can be greatly reduced, and the supply amount of the auxiliary combustor can be greatly reduced by improving the combustibility, and the economic burden can be reduced accordingly.
This also reduces the amount of exhaust gas generated in the melting process, thereby simplifying the exhaust gas treatment process and contributing to a reduction in the scale of the exhaust gas treatment facility.
以下、本発明の感染性医療廃棄物処理方法の実施形態を図1に基づいて説明する。図1は本実施形態による感染性医療廃棄物処理方法の処理行程を示している。 Hereinafter, an embodiment of the infectious medical waste treatment method of the present invention will be described with reference to FIG. FIG. 1 shows the process of the infectious medical waste processing method according to this embodiment.
図1において、感染性医療廃棄物には、医療施設より排出される注射器、点滴器具、ガーゼ・包帯等、様々な要滅菌性物質が含まれている。 In FIG. 1, infectious medical waste contains various sterilized substances such as a syringe, a drip device, a gauze, and a bandage discharged from a medical facility.
これらの医療廃棄物は、先ず焼却行程において、公知の焼却炉(炉内温度800〜900℃)にて焼却処理される。尚、焼却炉の助燃材としてLPG、灯油等の化石燃料が用いられる。
この焼却行程においては、各種医療廃棄物の内、布類(ガーゼや包帯等)や紙類等の可燃物は確実に焼却されて灰となるが、難燃物である点滴器具や塩ビチューブ等のプラスチック類は確実に焼却されず、その一部が焼却灰中に未燃の状態で残存している。尚、ガラス類(注射器等)、金属類(注射針等)等の不燃物は当焼却行程では焼却されずそのままの状態で残存する。
These medical wastes are first incinerated in a known incinerator (in-furnace temperature 800 to 900 ° C.) in the incineration process. Note that fossil fuels such as LPG and kerosene are used as auxiliary combustion materials for the incinerator.
In this incineration process, combustible materials such as cloth (gauze, bandages, etc.) and paper are surely incinerated to become ash among various medical wastes. These plastics are not reliably incinerated, and some of them remain unburned in the incineration ash. Incombustible materials such as glass (syringe and the like) and metals (injection needle and the like) are not incinerated during the incineration process and remain as they are.
また、この焼却行程において発生する有害ガス(排ガス)は排ガス処理工程において、排ガス処理施設(例えば、脱臭気、フィルタ、集塵機等)により無臭化・無煙処理され無害ガスとなって外部に排出される。 In addition, harmful gas (exhaust gas) generated in this incineration process is treated as non-bridging and smokeless by an exhaust gas treatment facility (for example, deodorized air, filter, dust collector, etc.) in the exhaust gas treatment process, and is discharged as harmless gas. .
次ぎに、焼却工程にて発生した不燃物や難燃物の未燃分が混在する焼却灰が溶融行程に移行されると共に、この焼却灰が溶融炉において加熱処理される。 Next, the incinerated ash mixed with the unburned material of the incombustible material and the flame retardant material generated in the incineration process is transferred to the melting process, and the incinerated ash is heated in the melting furnace.
本実施形態では、従来と相違し、上記溶融炉の熱源としてプラズマ加熱装置を装備している。
この熱プラズマ流による加熱は、バーナによる加熱に比較し、自己発熱のため被加熱物質(焼却灰、難燃物のや未燃分、不燃物)を効率良く加熱処理できること、出力の増大が容易に行え、急速加熱が可能であること等の利点を有する。
In this embodiment, unlike the prior art, a plasma heating device is provided as a heat source of the melting furnace.
Compared to heating with a burner, this heating by the thermal plasma flow is capable of efficiently heat-treating the material to be heated (incinerated ash, incombustible material, unburned material, incombustible material) and easily increase output compared to heating with a burner. And has the advantage that rapid heating is possible.
本実施形態では、このプラズマ加熱装置による高温の熱プラズマ流を利用して燃焼空気と共に溶融炉内に噴霧される助燃材ガスを効率良く燃焼させ、この助燃材の燃焼炎と熱プラズマ流により、溶融炉内温度を適正な溶融温度(少なくとも1300℃以上)に安定保持するようにしている。
この高温雰囲気下において焼却灰中に残存する難燃物の未燃分は効率良く全て確実に燃焼され、また、不燃物は確実に溶融されると共に、その際の溶融物が冷却・固形化されスラグとして排出される。
In the present embodiment, the auxiliary combustion gas sprayed into the melting furnace together with the combustion air is efficiently burned using the high temperature thermal plasma flow by the plasma heating device, and the combustion flame of the auxiliary combustion material and the thermal plasma flow, The temperature in the melting furnace is stably maintained at an appropriate melting temperature (at least 1300 ° C. or higher).
In this high temperature atmosphere, all the unburned matter of the incombustible material remaining in the incineration ash is efficiently and reliably burned, and the incombustible material is reliably melted, and the melt at that time is cooled and solidified. It is discharged as slag.
また、溶融行程において発生した排ガスは上述の排ガス処理工程において無臭化・無煙化される。 Further, the exhaust gas generated in the melting process is made odorless and smokeless in the above-described exhaust gas treatment process.
このように、本発明では、溶融行程における焼却灰の溶融熱源としてプラズマ加熱装置を用いることにより、高温の熱プラズマ流により助燃材の燃焼性を大幅に向上させることができ、焼却灰に残存する難燃物の未燃分も全て確実に燃焼することができる。これにより、燃焼性の向上により助燃材の供給量を大幅に削減することができ、その分、燃料費等、経済的負担(処理コスト)を軽減することができる。
また、助燃材の供給量が削減される分、溶融行程で発生する排ガス量が減少するため、この排ガスを無害化する上述の排ガス処理行程を簡略化でき、その結果、排ガス処理施設の規模を縮小することが可能となる。
As described above, in the present invention, by using the plasma heating device as the melting heat source of the incinerated ash in the melting process, the combustibility of the auxiliary combustion material can be greatly improved by the high-temperature thermal plasma flow, and remains in the incinerated ash. All unburned parts of flame retardants can be burned reliably. Thereby, the supply amount of the auxiliary combustion material can be greatly reduced by improving the combustibility, and the economic burden (processing cost) such as fuel cost can be reduced accordingly.
Moreover, since the amount of exhaust gas generated in the melting process is reduced by the amount of the auxiliary combustion material supplied, the above-described exhaust gas treatment process for detoxifying the exhaust gas can be simplified. As a result, the scale of the exhaust gas treatment facility can be reduced. It becomes possible to reduce.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005284297A JP2007093132A (en) | 2005-09-29 | 2005-09-29 | Infective medical waste treatment method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005284297A JP2007093132A (en) | 2005-09-29 | 2005-09-29 | Infective medical waste treatment method |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007093132A true JP2007093132A (en) | 2007-04-12 |
Family
ID=37979063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005284297A Withdrawn JP2007093132A (en) | 2005-09-29 | 2005-09-29 | Infective medical waste treatment method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2007093132A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106244242A (en) * | 2016-08-30 | 2016-12-21 | 南通天蓝环保能源成套设备有限公司 | A kind of Novel medical rubbish plasma gasification processing system |
CN110307548A (en) * | 2019-07-15 | 2019-10-08 | 丽水莲都晶格智能科技有限公司 | A kind of medical hemostatic gauze reclaimer |
-
2005
- 2005-09-29 JP JP2005284297A patent/JP2007093132A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106244242A (en) * | 2016-08-30 | 2016-12-21 | 南通天蓝环保能源成套设备有限公司 | A kind of Novel medical rubbish plasma gasification processing system |
CN106244242B (en) * | 2016-08-30 | 2021-07-30 | 江苏天楹环保能源成套设备有限公司 | Novel medical waste plasma gasification treatment system |
CN110307548A (en) * | 2019-07-15 | 2019-10-08 | 丽水莲都晶格智能科技有限公司 | A kind of medical hemostatic gauze reclaimer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100529826B1 (en) | Device and method for waste processing using Plasma pyrolysis | |
KR102214759B1 (en) | System for pyrolyzing medical waste | |
JP2007093132A (en) | Infective medical waste treatment method | |
WO2016209092A2 (en) | Method and apparatus for treating waste material | |
JP2004239509A (en) | Combustion control method of refuse incinerator, and refuse incinerator | |
JP2005180881A (en) | Waste treatment device | |
JP2018091574A (en) | Incineration apparatus | |
JP2015083892A (en) | Incineration apparatus | |
JP3287655B2 (en) | Combustible waste treatment equipment | |
US20200368376A1 (en) | Method and apparatus for nitrogen filled chamber carbonization of waste material | |
RU2768146C1 (en) | Method of recycling medical waste | |
KR200313803Y1 (en) | Incinerator with heating device capable of saving energy | |
CN217274186U (en) | Combustible flue gas after-combustion device for waste incineration | |
JP2004169954A (en) | Operation method for waste incinerator and waste incinerator | |
JP2004169955A (en) | Waste incinerator and method of operating the same | |
KR20080064550A (en) | Trash incineration system | |
KR200199705Y1 (en) | Gas generation preventing apparatus of waste | |
JPH07248109A (en) | Composite plant for incinerating waste and generating electric power, and combustion method for waste in incinerator | |
KR101050557B1 (en) | Plasma module and incinerating facility using plasma | |
JP2005164059A (en) | Waste incinerating treatment method and its plant | |
JP2011145033A (en) | Waste disposal device | |
JP2005024228A (en) | Compact incinerator for waste in infective medical care | |
US20170176001A1 (en) | Incineration of Bio-Hazard Material | |
JP2002186954A (en) | Method for treating contaminated soil | |
JP2023183054A (en) | Detoxification treatment method of low concentration pcb waste |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20081202 |