KR19980057682A - Waste Incinerator and Method - Google Patents

Abstract

Disclosed is a waste incineration apparatus for burning waste and a method thereof. The present invention forms a primary combustion chamber and a secondary combustion chamber in an incinerator, and firstly incinerates medical waste by using a transportable plasma torch that induces a high temperature state of 1600 ° C or higher, and unreacted gas is secondary. It is characterized in that the combustion chamber is secondarily burned using the non-transportable plasma torch 9. The present invention having such a feature can safely and effectively treat medical waste generated from medical activities such as medical treatment, research, and analysis.

Description

Waste Incinerator and Method

The present invention relates to a waste incineration apparatus and a method thereof, and more particularly, to a waste incineration apparatus and method for incinerating waste generated in the medical field.

In general, medical waste generated from medical activities such as medical treatment, research, and analysis is not only harmful because it contains pathogenic bacteria, but the waste itself is very chemically and physically harmful. Therefore, great care must be taken when treating medical waste.

Methods of treating medical waste include a method of incineration or landfill after sterilizing pathogenic bacteria, and a method of incineration without sterilization.

The method of incineration or landfill after sterilization is used to treat pathogenic bacteria of medical wastes by using high temperature, high pressure steam, oxidizing chemicals, or using electron beams such as microwaves. There is a problem that does not destroy the chemical and physical hazards of the waste. Therefore, waste handlers had to incinerate or landfill the sterilized medical waste like regular waste.

The method of incineration without sterilization uses auxiliary fuels such as LNG, LPG and oil to maintain the internal temperature of the incinerator at 1100 ° C. or higher in order to increase the destruction efficiency of infectious pathogens. This incineration method is difficult to maintain the destruction efficiency of the pathogen contained in the waste more than 99.9999%, there is a problem that toxic substances such as dioxin (C12H4O2Cl4), furan (C12H4OCl4) is generated.

Therefore, there is a need in the art for the development of a medical waste treatment apparatus and method for solving the above problems.

The technical problem of the present invention is to safely and effectively treat medical wastes generated from medical activities such as medical treatment, research, and analysis, and to prevent the heavy metal components in the slag generated during incineration from being converted into stable compounds to dissolve the slag. It is to provide a waste treatment apparatus and a method for recycling it to civil and building materials.

1 is a partial cutaway side view showing a hospital waste incinerator according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

Explanation of symbols for the main parts of the drawings

1 ... inlet 2 ... 1st outlet

6 ... 2nd outlet 8 ... observation

9 ... non-conductive plasma torch 10 ... connection passage

11 ... 1st combustion chamber 12 ... 2nd combustion chamber

13 Exhaust 14.Temperature

15 ... diaphragm 16 ... secondary air supply nozzle

17 ... Primary air supply nozzle 20 ... Transferable plasma torch

The medical waste incineration apparatus according to the present invention includes: an incinerator having an incineration space in which waste is incinerated, a first plasma torch installed in the incinerator to generate a plasma gas, and an incinerator of a portion corresponding to the first plasma torch. A gas discharge unit and a connection between the primary combustion chamber and the secondary combustion chamber while being installed in the incineration space between the gas discharge unit and the first plasma torch to separate the incineration space into a primary combustion chamber and a secondary combustion chamber. A separator for forming a passage, a second plasma torch installed in the incinerator around the connection passage to supply plasma gas to the secondary combustion chamber, and a combustion air supply unit installed in the incinerator to supply combustion air to the incineration space. Characterized in having a.

In the present invention, the first plasma torch is a transfer plasma torch, and the second plasma torch is preferably a non-transportable plasma torch.

In the present invention, it is preferable to further include a diaphragm installed in the incinerator below the second plasma torch to extend the connection passage.

The medical waste incineration method according to the present invention comprises the steps of: incinerating waste in one space in an incinerator using a transportable plasma torch, and using the non-transportable plasma torch in the other space in the incinerator. It characterized in that it comprises a step of processing.

And, in the present invention, when the waste is incinerated in one side space in the incinerator by the transport plasma torch to put the slag regulator which can lower the melting point of the inorganic material contained in the waste in the incinerator to incinerate the waste It is preferable to further include.

Medical waste incineration apparatus and method according to the present invention having such a feature can safely and effectively treat medical waste generated from medical activities, such as medical treatment, research, analysis. In addition, since the heavy metal component in the slag generated in the incineration apparatus of the present invention is not converted to a stable compound and eluted, the slag can be recycled to civil and building materials.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the waste incineration apparatus and its incineration method according to the present invention.

Referring to FIG. 2, the present invention forms a primary combustion chamber 11 and a secondary combustion chamber 12 in an incinerator, and transfers the plasma torch 20 to induce a high temperature state of 1600 ° C. or higher in the primary combustion chamber 11. The primary feature is that the waste is incinerated first, and the unreacted gas is secondarily burned in the secondary combustion chamber 12 using the non-transportable plasma torch 9.

Medical waste generated from medical activities such as medical treatment, research and analysis can be largely divided into organic and inorganic ingredients. Organic waste includes cotton wool, disposable syringes, bandages, gauze, surgical gloves, pulmonary blood, and physiological test by-products. Inorganic wastes include injection bottles, needles and vials. The organic component is pyrolyzed at high temperature, and the inorganic component is melted at high temperature.

1, 2, and 3, a first plasma torch 20 for generating a plasma gas is installed in an incinerator in which an incineration space in which waste is incinerated is formed, and a portion corresponding to the first plasma torch 20 is formed. The gas discharge unit 13 is installed in the incinerator. In addition, a combustion air supplier (not shown) for supplying combustion air is connected to the incinerator, and the gas discharge unit 13 is connected with an air pollution control device (not shown).

In the incineration space between the gas discharge unit 13 and the first plasma torch 20, a separator 25 for separating the incineration space into the primary combustion chamber 11 and the secondary combustion chamber 12 is installed, and the primary combustion chamber ( 11) and the secondary combustion chamber 12 is connected by a connecting passage 10 formed in the separator 25. Accordingly, the gas generated by burning the waste in the primary combustion chamber 11 by the first plasma torch 20 through the connection passage 10 formed in the separator 25 and the secondary combustion chamber 12 is discharged from the gas. Discharged to (13).

Preferably, the first plasma torch 20 is a transportable plasma torch in which the anode portion 22 and the cathode portion 21 are separated from each other, and the second plasma torch 9 has one anode portion and one cathode portion. It is preferable to be a non-transportable plasma torch installed in the body. In addition, the connection passage 10 is preferably formed in the separator 25 in a position higher than the gas discharge portion (13).

The first combustion chamber 11 has a first discharge portion 2 for discharging the molten metal, a second discharge portion 6 for discharging molten slag, an injection portion 1 for injecting waste, and a primary combustion air A first injection nozzle 17 for injecting the same is installed. The connection passage 10 is provided with a second injection nozzle 16 for injecting secondary combustion air. The first and second injection nozzles 17 and 16 are connected to a combustion air supply pipe 5 connected to the combustion air supply.

The second plasma torch 9 is installed in the incinerator on the discharge side of the connection passage 10 to further oxidatively decompose the gas introduced into the second combustion chamber 12 through the connection passage 10. In addition, it is preferable that a diaphragm 15 is provided below the second plasma torch 9 to extend the connection passage 10. The diaphragm 15 serves to improve the efficiency of the oxidation reaction by connecting the gas component passing through the connecting passage with the plasma gas generated in the second plasma torch 9.

The incinerator is provided with a thermometer 14 for continuously detecting the temperature of each combustion chamber (11, 12), to observe the interior of the first combustion chamber (11) and to examine the operation of the first plasma torch (20). The observation port 8 is provided. In the incinerator wall, two types of fireproof materials 23 and 24 and a heat insulating material were used so that the temperature of the shell was 80 ° C. or less.

The waste treatment apparatus according to the present invention including the components as described above treats waste according to the following waste treatment method.

When waste is introduced into the first combustion chamber 11 heated to 1600 ° C. by the transferable plasma torch 20 through the input unit 1, it is oxidized by the primary combustion air injected through the primary combustion air nozzle 17. Generates unburned gas. This unburned gas is once again burned by the plasma by the non-transportable plasma torch 9 when it enters the secondary combustion chamber 12 through the connecting passage 10.

As such, the present invention has the advantage of maintaining the pathogen destruction efficiency of the waste 99.9999% or more through two high-temperature decomposition process. In addition, the present invention has the advantage that the ash containing heavy metals generated during the incineration process is melted by the transportable plasma torch 20 to be discharged as a slag in the form of a stable compound to be recycled as civil engineering and building materials.

In the primary combustion chamber 11, it is preferable to put a slag adjusting material that can lower the melting point of the inorganic material contained in the waste. That is, when the waste is incinerated in the primary combustion chamber 11 by the transportable plasma torch 20, it is possible to effectively treat the waste by lowering the melting point of the inorganic material by putting the slag adjusting material in the waste.

The preferred embodiment of the present invention described by the accompanying reference drawings is only one embodiment. Those skilled in the art will fully understand the preferred embodiments of the present invention and will be able to implement similar types of waste incineration apparatuses and methods thereof.

Therefore, the true technical protection scope of the present invention will be defined by the claims by the technical idea of the present invention.

Medical waste incineration apparatus and method according to the present invention has the advantage that can safely and effectively treat medical waste generated from medical activities such as medical treatment, research, analysis, etc., stable heavy metal components in slag generated during incineration There is an advantage in that the slag can be recycled to civil engineering and building materials by being converted to a compound so as not to be eluted.

Claims (8)

An incinerator with an incineration space where waste is incinerated, A first plasma torch installed in the incinerator to generate a plasma gas; A gas discharge part installed in an incinerator of a portion corresponding to the first plasma torch and discharged of gas; A separator installed in the incineration space between the gas discharge part and the first plasma torch to separate the incineration space into a primary combustion chamber and a secondary combustion chamber, and to form a connection passage connecting the primary combustion chamber and the secondary combustion chamber. Wow, A second plasma torch installed in the incinerator around the connection passage to supply plasma gas to the secondary combustion chamber; And a combustion air supply unit installed in the incinerator and supplying combustion air to the primary combustion chamber and the secondary combustion chamber. The method of claim 1, And said first plasma torch is a transportable plasma torch and said second plasma torch is a non-transportable plasma torch. The method of claim 1, And a diaphragm which is installed in the incinerator below the second plasma torch and extends the connection passage. The method of claim 1, And said connecting passage is formed in said separator at a position higher than said discharge portion. The method according to any one of claims 1 to 3, wherein The waste incineration device, characterized in that the medical waste generated from medical activities such as medical treatment, research, analysis. Incineration of waste in one space in the incinerator using a transportable plasma torch; And treating the gas generated in the step by using a non-transportable plasma torch in the other space in the incinerator. The method of claim 6, Incinerating the waste by inserting a slag modifier to lower the melting point of the inorganic material contained in the waste when the waste is incinerated in one side space in the incinerator by the transportable plasma torch. Waste incineration method The method according to claim 6 or 7, The waste incineration method, characterized in that the medical waste generated from medical activities such as medical treatment, research, analysis.