KR20040083227A - Carbonization plasma combustion system and method thereof - Google Patents

Abstract

PURPOSE: A carbonization plasma combustion device and a method thereof are provided to prevent the increase of the facility cost and the running cost while suppressing the generation of dioxin. CONSTITUTION: A carbonizing chamber(100) is installed in the front of a carbonization plasma combustion device. The carbonizing chamber embeds a heating furnace(120) using thermally decomposed heating combustible gas as a heating source. A plasma chamber is connected with the rear part of the carbonizing chamber. The plasma chamber melts the residue while thermally decomposing and gasifying a coal in the carbonizing chamber. A separator(130) is connected with the carbonizing chamber to condense and separate high volatile material among the thermally decomposed gas through the carbonizing chamber. A cooling tower of exhaust gas(150), a dust collector(160) and a ventilating fan(170) are connected with a moving passage of the combustion exhaust gas from the carbonizing chamber. Thereby, the running cost and the facility cost are reduced.

Description

Carbonization plasma combustion system and method

The present invention relates to a carbonizing plasma melting furnace combining carbonization and plasma melting, in particular an incinerator for eliminating expensive equipment costs and a high running cost of a plasma melting furnace, a carbonization plasma combustion apparatus for suppressing dioxin generation, and a combustion method thereof. will be.

More specifically, a carbonization chamber disposed in a heating chamber coat or an inner coat using pyrolyzed combustible gas as a heat source is disposed at the front end, and a plasma chamber for thermally decomposing carbonized gas and melting the residue is provided at the rear end. In the carbonization chamber, the combustion gas pyrolyzed and vaporized at 300 ~ 800 ℃ in the carbonization chamber is cooled to 150 ~ 400 ℃, and condensation removal of the high boiling point is carried out in a small furnace to suppress dioxin and at the same time, high equipment cost The present invention relates to a carbonization plasma combustion apparatus and a combustion method for reducing an expensive running cost added to a plasma gasification furnace.

In recent years, dioxin has been raised as a social problem, and direct gasification melting furnaces such as fluidized bed type and kiln type have been put into practical use as a countermeasure.

That is, the method of pyrolyzing into combustible gas in a noncombustible atmosphere of 450-800 degreeC, without directly burning, and blowing in oxygen in a subsequent combustion furnace is used for the method of burning at high temperature.

However, such equipment has a problem of high equipment cost and high running cost.

In addition, a plasma direct gasification furnace or an arc direct gasification melting furnace is used for infectious medical waste.

Such a melting furnace has the advantage of high sterilization reliability because it does not require the time and quality of fractionation and is a high temperature treatment. However, this melting furnace is also expensive, and the running cost is higher, which makes it difficult to spread.

On the other hand, the carbonization device is a situation that has been developed and put into practical use as a batch type, continuous stirring type, rotary kiln type of batch type, continuous type equipment in the combustion gas direct injection type or indirect heating type specifications.

However, such a facility has a problem that running cost is inexpensive, but generation of coal is an obstacle to dissemination, and generation of coal makes it impossible to use infectious medical waste.

A waste treatment system related to such a technique is disclosed in Korean Patent Publication No. 232403, and its configuration is as a dry distillation for heating and thermally decomposing the waste in the state of supplying the outside air while the medical waste is put in ( 6); A combustion section provided with a combustion furnace (8) for receiving the pyrolyzed gas generated in the dry distillation furnace and retaining this gas in a state of ultra high temperature and completely burning it; Temperature reduction means 42 for lowering the temperature before the ultra-high temperature gas is transferred to the post-treatment process, and an absorption tower 54 for capturing harmful gas in the discharged exhaust gas and removing moisture to convert it into a white gas. It consists of a configuration including a neutralizing unit.

However, in the waste treatment system as described above, it is difficult to completely collect contaminants contained in the gas or the composition that emits only white gas after collecting harmful gas or removing moisture from the gas discharged from the combustion part, There is a lot of problems such as unnecessary heat loss occurs by emitting heat in the waste gas generated as it is.

An object of the present invention for improving this problem is to prevent an increase in equipment cost and running cost in a facility that thermally decomposes infectious medical wastes in an atmosphere such as nitrogen and carbon dioxide by using a plasma melting furnace, and has problems in practical use. Minimize.

In addition, to reduce the disinfection of non-combustible parts, while ensuring that SS, SOx, NOx, and dioxin of exhaust gas are equal to or higher than those of general waste incinerators, expensive running coasts accompanying plasma gasification furnaces can be eliminated. To provide a carbonized plasma combustion device and a combustion method for improving the high cost of inert gas expenses, such as carbon dioxide gas.

1 is a schematic diagram showing a conventional waste treatment system.

Figure 2 is a schematic diagram showing a carbonized plasma combustion apparatus according to the present invention.

Figure 3 is a schematic diagram showing a carbonized plasma combustion apparatus according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100 ... Carbon room 100b ... Agitator

120 ... heater 130 ... separator

140.Plasma 150.Exhaust gas cooling tower

160 ... dust collector 170 ... exhaust fan

180 ... 2nd incinerator 190 ... gas mixer

In order to achieve the above objects, in a carbonization chamber in which the volume ratio of the carbonization chamber and the plasma chamber is 99.9: 0.1 to 50:50, the combustible gas pyrolyzed and vaporized at 300 to 800 ° C is cooled to 110 to 600 ° C, and the high boiling point portion is condensed. The combustion method of the carbonization plasma combustion apparatus which removes and burns in an incinerator is provided.

On the other hand, the carbonization chamber which arrange | positioned the heating furnace which uses the pyrolyzed combustible gas as a heat source in an outer coat or an inner chamber is arrange | positioned at the front end, the plasma chamber which thermally decomposes the coal produced | generated at the rear end and gasifies, and arrange | positions the residue, and in the said carbonization chamber A carbonized plasma combustion device is provided which is configured to sequentially install an exhaust gas cooling tower, a dust collector, and an exhaust fan for discharging exhaust gas on a flow path of the exhaust gas discharged.

On the other hand, the carbonization chamber which arrange | positioned the heating furnace which uses the pyrolyzed combustible gas as a heat source in the outer coat or the inner chamber is arrange | positioned at the front end, the plasma chamber which thermally decomposes the coal produced | generated at the rear end, and melts a residue is arrange | positioned, and the said carbonization chamber Carbonization consisting of an exhaust gas cooling tower, a dust collector and an exhaust fan for discharging the exhaust gas are sequentially installed on the flow path of the exhaust gas discharged from the exhaust gas, and a secondary incinerator and a gas mixer are further provided before the exhaust fan. A plasma combustion device is provided.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 2, in the combustion apparatus of the present invention, a carbonization chamber 100 in which a heating furnace 120 using pyrolyzed combustible gas as a heat source is disposed in an outer jacket or an inner jacket is disposed at the front end, and the coal generated at the rear end thereof. The plasma chamber 140 is pyrolyzed to gasify and melt the residue.

In addition, the carbonization chamber 100 is provided with a stirrer 100b connected to the motor 100a to agitate infectious medical waste introduced from a hopper connected to an upper portion, and a high boiling point portion of the combusted gas vaporized on one side thereof. Separator 130 for condensation separation is connected.

In addition, the exhaust gas cooling tower 150 and the dust collector 160 are sequentially installed on the flow path of the combustion exhaust gas so as to process the combustion exhaust gas generated in the carbonization chamber 100.

In addition, the dust collector 160 has a plurality of filters 160a inside thereof, and an exhaust fan 170 for discharging exhaust gas is installed thereon.

On the other hand, in the present invention as shown in Figure 3, the carbonization chamber 100 is disposed in the front end of the heating furnace 120, the pyrolyzed combustible gas as a heat source is disposed in the outer coat or the inner coat, and thermally decomposed the coal generated at the rear end The plasma chamber 140 is provided for gasifying and melting the residue.

In addition, the carbonization chamber 100 is provided with a stirrer 100b connected to the motor 100a to agitate infectious medical waste introduced from a hopper connected to an upper portion, and a high boiling point portion of the combusted gas vaporized on one side thereof. Separator 130 for condensation separation is connected.

In addition, a dust collector 160 having an exhaust gas cooling tower 150 and a plurality of filters 160a are sequentially installed on the flow path of the combustion exhaust gas so as to process the combustion exhaust gas generated in the carbonization chamber 100.

In addition, the secondary incinerator 180 is installed to reburn the exhaust gas passing through the dust collector 160, a gas mixer 190 is statically installed on one side of the secondary incinerator 180, the gas mixer The upper portion of the 190 is made of a configuration installed in the exhaust fan 170 for the discharge of exhaust gas.

On the other hand, the present invention, 110 ~ 600 ℃ the combustion gas pyrolyzed and vaporized at 300 ~ 800 ℃ in the carbonization chamber is installed so that the volume ratio of the carbonization chamber 100 and the plasma chamber 140 is 99.9: 0.1 ~ 50: 50 It cools to a high boiling point, and condenses and removes a high boiler.

Referring to the operation of the present invention having the configuration as described above are as follows.

2 and 3, the infectious medical waste is incinerated after injecting through a hopper installed in the upper part of the carbonization chamber 100, and liquid fuel or solid fuel is stored in the carbonization chamber 100 to preserve the calorific value at this time. Input.

And, the temperature of the carbonization chamber is pyrolysis gasification of the waste fuel is supplied to maintain a temperature of 300 ~ 800 ℃, preferably 400 ~ 500 ℃.

Subsequently, the combusted waste is supplied to the heating furnace 120, and when fuel gas is used, the waste is directly supplied to the combustion chamber.

In addition, the inside of the carbonization chamber 100 is provided with a stirrer 100b connected to the motor 100a to incinerate the waste to be injected while stirring to allow uniform incineration.

Subsequently, the gas pyrolyzed and vaporized in the carbonization chamber 100 is cooled to 110 to 600 ° C., preferably 150 to 400 ° C., and the high boiling point is removed through the separator 130 to condense and separate the high boiling point. Supplied to 120.

In addition, the high-boiling matter condensed and removed by the separator 130 is returned to the carbonization chamber 100 or the plasma chamber 140 to be decomposed again.

As described above, carbonized carbon (2 to 5 wt% infectious medical waste) in the carbonization chamber 100 as a solid or liquid fuel is supplied to the plasma chamber and pyrolyzed and vaporized under an inert gas at 1200 to 1500 ° C to melt the residue as molten slag. Discharge.

In the plasma chamber, a pair or a plurality of torch electrodes to which a plasma power is applied are disposed in a space, and plasma discharge is performed by the torch electrode while a plasma working gas, argon, nitrogen gas, carbon dioxide gas, or the like is supplied.

At this time, the carbon supplied from the carbonization chamber is gasified by pyrolysis by plasma discharge, or the inorganic powder is discharged in a molten state, and the melt is sludged after water cooling.

Here, the vaporized combustible gas is burned in the heating furnace 120 used for the heat source of the carbonization chamber 100.

In addition, the exhaust gas generated in the carbonization chamber 100 is forcibly discharged through the exhaust fan 170 installed at the end of the flow path of the exhaust gas, the exhaust gas discharged from the carbonization chamber 100 is first exhaust gas cooling tower ( Condensed while being quenched at 150, and passes through the dust collector 160 to filter the harmful substances in the exhaust gas.

On the other hand, as shown in Figure 3, the rear of the dust collector 160, a small secondary incinerator 180 and a gas mixer 190 having a static mixer is further provided to the exhaust gas for incinerator for carbonization chamber heat source after desulfurization, dust collection. It mixes at the outlet of the secondary incinerator and plays the role of afterburner.

The operation of the present invention as described above will be described in more detail.

2 and 3, the carbonization chamber 100 is disposed at the front end, and the exhaust gas treatment having the plasma chamber 140 at the rear end and a small secondary incinerator 180 and a gas mixer 190 as necessary. A carbonized plasma melting furnace equipped with equipment is used to thermally decompose infectious medical waste in an oxygen-free atmosphere, and blow air and oxygen into the vaporized combustible gas.

Subsequently, carbonization of the infectious medical waste in an oxygen-free atmosphere is carried out using a carbonization chamber 100 having a heat source heating furnace 120 in an outer coat or an inner coat, and the combustible gas generated by the thermal decomposition as described above is heated for the heat source of the carbonization chamber. High-temperature combustion in furnace (overcoat or inner coat) 120.

Subsequently, the unvaporized carbide (about 2 to 5% by weight of waste) is sent to a small plasma chamber 140 connected in a closed state and thermally decomposed again by high heat, and the residue is melted and then cooled and slaged.

Then, the combustible gas vaporized in the plasma chamber 140 is sent to the carbonization chamber heat source heating furnace 120 at the front end and burned at a high temperature. When the combustible gas remains, the secondary that follows this surplus to the plasma chamber 140 It burns at high temperature in the incinerator 180 and is mixed with the exhaust gas (after desulfurization and dust collection) of the carbonization furnace heating furnace 120 and the gas mixer 190 and replaced with the afterburner.

In addition, the efficiency is increased when a facility that supports complete combustion, such as ozone blowing and photooxidized titanium treatment ozone blowing, is installed on the flow path of the combustion exhaust gas.

On the other hand, the volume ratio of the carbonization chamber 100 and the plasma chamber 140 is 99.9: 0.1 to 50: 50, preferably 98: 2 to 96: 4 and then pyrolyzed and vaporized at 300 to 800 ℃ in the carbonization chamber, When it is cooled to 110 ~ 600 ℃ and condensed and removed from the high boiling point, the sterilization loss of non-combustible parts can be reduced, and the SS, SOx, NOx, and dioxin of the exhaust gas are secured at least equal to that of the general waste incinerator, which is accompanied by plasma gasification melting furnace. Eliminating expensive running coasts and reducing costs by injecting inert gas such as argon, nitrogen gas and carbon dioxide gas.

As described above, according to the present invention, in a facility for thermally decomposing infectious medical waste in an atmosphere such as nitrogen and carbon dioxide using a plasma melting furnace, an increase in equipment cost and running cost is prevented, and problems in practical use are minimized.

In addition, the sterilization loss of non-combustible parts is reduced, and SS, SOx, NOx, and dioxin of exhaust gas are secured at least equal to that of a general waste incinerator, thereby eliminating expensive running coasts associated with plasma gasification furnaces, and argon, nitrogen gas, It is to improve the high cost of inert gas expenses such as carbon dioxide gas.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.

Claims (6)

In the carbonized plasma combustion apparatus, A carbonization chamber 100 having a heating furnace 120 having a pyrolyzed combustible gas as a heat source is installed at the front end, and the plasma chamber 140 melting the residue while pyrolyzing and gasifying carbon generated in the carbonization chamber 100. It is connected to the rear end of the carbonization chamber 100, the separator 130 is connected to one side of the carbonization chamber 100 to condense and separate the high boiling point of the pyrolysis gas by the carbonization chamber, the combustion vessel discharged from the carbonization chamber Carbonization plasma combustion apparatus, characterized in that the exhaust gas cooling tower 150 and the dust collector 160 and the exhaust fan 170 for discharging the exhaust gas is connected on the flow path of the gas. According to claim 1, The carbonized combustion combustion apparatus, the secondary incinerator 180 is installed to reburn the exhaust gas passing through the dust collector 160, the gas is static mixer on one side of the secondary incinerator 180 Carbon dioxide plasma combustion apparatus, characterized in that the mixer 190 is further connected. The carbonization plasma combustion device according to claim 1, wherein the carbonization chamber (100) is provided with an agitator (100b) driven as a motor (100a). The carbonization plasma combustion apparatus according to claim 1, wherein the carbonization plasma combustion apparatus is provided with equipment for supporting complete combustion such as ozone blowing, photooxidized titanium oxide treatment and ozone blowing to the combustion exhaust gas. Injecting the waste into a carbonization chamber using the pyrolysis combustible gas of the plasma as a heat source and maintaining the temperature of the carbonization chamber at 300 to 800 ° C. to pyrolyze the waste gas; Condensing the high boiler by cooling the gas pyrolyzed and vaporized in the carbonization chamber to a temperature of 110 to 600 ° C .; And, Decomposing the condensed high boiler again in the carbonization chamber and burning the exhaust gas, And a volume ratio between the carbonization chamber and the plasma chamber is 98: 2 to 96: 4. The combustion method of the carbonization plasma combustion apparatus according to claim 5, wherein the carbonization chamber is further subjected to high temperature pyrolysis combustion by using fuel gas, liquid fuel, and solid fuel as supplementary fuel for a heat source.