KR100458470B1 - A burning apparatus using r.d.f and method thereof - Google Patents

Abstract

The present invention relates to an incineration apparatus and an incineration method using waste resource processing fuel.

In particular, the primary combustion unit is provided with a conveying unit for moving the waste resource processing fuel introduced from the conveying conveyor into the combustion chamber, a preheating burner for preheating the grate to heat the incinerated material, and the exhaust gas generated in the combustion chamber is recycled. It consists of a de-catalyst oxidation combustion section that injects oxidizing air and a secondary combustion section that completely burns the exhaust gas discharged.The incineration material is introduced into the combustion chamber to be preheated, and then the waste-fired fuel is used for rapid combustion. By burning the incineration to be made and reburning the unburned material of the discharged flue gas, incineration of sludge food waste and other wastes generated in wastewater treatment plants such as sewage treatment plants and paper mills is burned at a low cost, and the exhaust gas is completely burned. It is characterized by reducing air pollution.

Description

Incinerator and incineration method using waste resource processing fuel {A BURNING APPARATUS USING R.D.F AND METHOD THEREOF}

The present invention relates to an incineration apparatus and an incineration method using waste resource processing fuel, and more specifically, a transfer unit for moving the waste resource processing fuel introduced from the conveying conveyor into the combustion chamber, and the incinerator is heated to preheat the incinerator A primary combustion unit having a preheat burner, a decatalyst oxidation combustion unit for recirculating exhaust gas generated in the combustion chamber to inject deoxidation air, and a secondary combustion burner provided on one side of the combustion chamber. It consists of a combustion section, and incinerates sludge to 10-20% by weight of food waste, 20-40% by weight of other wastes, and 60-70% by weight of waste resource processing fuel such as PVC, PE, and PEP Pyrolysis gas is burned by the pyrolysis gas for rapid combustion of the incinerator by resource processing fuel, and the unburned material is reburned from the exhaust gas discharged. As, and at a low cost form the productivity, and provides a incinerator and incineration method using the waste materials processed fuel to stabilize the ignition energy.

Today, energy resources are gradually being depleted due to the increase of population and the acceleration of industrialization, and a large amount of garbage, sewage sludge, manure and food waste are generated due to various production and consumption activities, causing serious environmental pollution. .

Such wastes cannot be recycled and must be incinerated or landfilled.In the case of landfill, leachate or odor generated from landfilled incineration will contaminate the soil around the groundwater again. Although the waste treatment process is simplified, the waste gas generated during the incineration process contains various harmful substances such as dust, nitrogen oxides, and dioxins, which causes problems of increasing environmental pollution.

In order to minimize this, conventionally, high temperature combustion air is supplied so that complete combustion occurs in one waste incineration, thereby minimizing harmful substances discharged by inducing high temperature combustion conditions within a short time, or having a separate dust collector in the incinerator. Some measures have been proposed to facilitate the separation of hazardous substances from flue gas.

However, this conventional technology is mainly used as a raw material for incineration of waste, so that the cost of incineration increases, and additional costs are incurred when a separate dust collector is installed in the incinerator, and is discharged even when a dust collector is attached. Complete purification of the hazardous materials had problems that were difficult to expect.

An object of the present invention to improve this is to reduce the cost required during the incineration of sludge, food waste or other waste generated in wastewater treatment plants, such as sewage treatment plants, paper mills, and to stabilize the flame supplied to the incinerator at high temperatures To ensure uniform combustion.

1 is a side view showing an incineration apparatus using waste resource processing fuel according to the present invention.

Figure 2 is a detailed view of the portion "A" of Figure 1 in accordance with the present invention.

Figure 3 is a side view showing an incineration apparatus according to another embodiment of the present invention.

Figure 4 is a block diagram showing an incineration method using waste resources processing fuel according to the present invention.

<Code Description of Main Parts of Drawing>

100.Combustion chamber 110.Transfer conveyor

120 ... transfer unit 130 ... primary combustion unit

140 ... Catalyst Oxidation and Combustion 150 ... Secondary Combustion

In order to achieve the above object, the present invention, the transfer unit is provided with a gate for opening and closing the sliding plate and the combustion chamber inlet vertically moved by the hydraulic cylinder to the bottom of the hopper so that the waste resource processing fuel introduced from the conveying conveyor moves into the combustion chamber. Wow,

A preheat burner is installed to preheat the grate to heat the injected incinerator, and a rotating shaft for rotating the grate to discharge the incinerator oxidized and burned by the waste resource processing fuel injected from the transfer unit to one side is driven by a motor. The primary combustion section,

A decatalyst oxidative combustion unit for recycling the exhaust gas combusted by the waste resource processing fuel in the combustion chamber to inject the oxidizing air to the decatalyst;

Contaminants discharged from the combustion chamber is configured to include a secondary combustion unit having a reburn burner on the upper side of the combustion chamber so that the complete combustion.

In addition, the present invention is a combustion chamber preheating step of heating the combustion chamber to 200 ℃ ~ 500 ℃ by the preheat burner,

The waste resource processing material input step of injecting waste resource processing fuel such as PVC, PE, PEP into the combustion chamber,

A waste resource processing fuel liquefaction step in which the injected waste resource processing fuel is heated to promote liquefaction;

60 ~ 70% by weight of waste resource processing fuel such as PVC, PE, PEP, etc., and sludge or food waste 10 ~ by putting dried sludge or food waste and other wastes into waste resource processing fuel such as PVC, PE, PEP, etc. An incineration input step of injecting sludge or food waste and other wastes dried into the combustion chamber to maintain 20% by weight and 20% to 40% by weight of other wastes;

An incineration oxide burning step which is heated to 1200 ° C. to 1300 ° C. to allow rapid combustion of the incinerator in the combustion chamber;

A decatalytic oxidation combustion step of injecting decatalyst oxidized air into the combustion chamber to inject oxidized combustion air to reduce contamination of exhaust gases to form a swirling flame;

An unburned material generated from an incineration flue gas oxidatively burned by waste resource processing fuel is used as a flue gas recombustion step of re-burning flue gas by a reburn burner installed in an upper part of a combustion chamber to reburn.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and their definitions should be made based on the contents throughout the specification.

Hereinafter, the technical configuration of the present invention according to the accompanying drawings in detail as follows.

First, the recycled fuel used in the present invention is a flammable material, such as PVC, PVC, PE, PEP, which is removed from a non-burning material such as metal or glass after selecting recycled materials. It is a raw material that is crushed and processed to a suitable size and its chemical composition is as follows.

ㅇ Chemical composition of waste processed fuel

moisture(%) Ash content (%) ingredient(%) system Calorific Value (Kcal / kg) Specific gravity (ton / m ³ ) C H N O S CL 5.5 2.9 58.9 9.47 0.18 24.45 0.1 0.9 100 6200 0.55

The waste processed fuel having the composition described above is introduced into the combustion chamber 160 to completely burn the incinerator. The present invention using the waste processed fuel, as illustrated in FIG. 1 or FIG. The preheat burner 132 that receives light oil from the diesel oil tank 131 to be heated is installed at one side of the bottom, and a conveying conveyor 110 to which the waste resource processing fuel is transferred to one side is connected to the waste resource processing fuel. The reburn burner 151 is provided at the top so that the exhaust gas combusted by the heating is completely heated.

In the combustion chamber, the primary combustion unit 130 including the grate 131 is formed at a lower portion, and the exhaust gas generated from the primary combustion unit 130 is recycled to the upper portion of the exhaust gas to deoxidize combustion. The unit 140 is formed, and the second combustion unit 150 is formed at the top thereof with the complete combustion of the exhaust gas by the reburn burner 151.

In addition, the combustion unit 140 forms a swirling flame (twist flame) in the center of the combustion chamber 160 by sequentially injecting a catalyst mixed with O ₃ plasma gas and atmospheric air to adsorb and decompose contaminants, and at least 800 Maintain a constant temperature above ~ 900 ° C to ensure that the flue-gas is completely combusted and discharged as it passes through this flame temperature, but does not overfeed the O ₃ plasma gas.

For example, the sludge or food waste dried by the conveying unit 120 where the pushing plate 123 vertically moved by the hydraulic cylinder to the bottom of the hopper 121 and the gate 122 opening and closing the inlet of the combustion chamber 160 are respectively installed. 10 to 20% by weight, 20 to 40% by weight of other wastes, and 60 to 70% by weight of waste resource processing fuel such as PVC, PE, PEP, etc. After the incineration in the combustion chamber is oxidized and burned by the primary combustion section where the rotating shaft to be rotated is installed, de-catalyzed oxidized air is injected from the oxidative combustion section so that the exhaust gas combusted by the waste resource processing fuel is recycled, and contaminants are removed from the exhaust gas. Reburned.

At this time, when the dried sludge or food waste that is introduced into the combustion chamber is 20% by weight or more, 10 to 20% by weight is maintained because combustion is hindered by moisture generated from food waste, and 40% by weight of other waste such as wood is used. If it is abnormal, it heats up to 1200 ~ 1300 ℃ by waste raw material processing fuel, which is the main raw material, and it hinders the complete combustion of small items. It keeps 20 ~ 40% by weight of other waste such as wood, and keeps PVC, PE, PEP, etc. Waste resources processed fuel is preferably maintained at 60 to 70% by weight.

The wall of the combustion chamber 160 is preferably composed of a firebrick, a heat insulating castable, a heat insulating material, and a casing, and is preferably made of a castable at a ceiling or any special place, and the fire brick used in the combustion chamber 160. Should be made of sufficient material for various temperatures, solid construction, ash deposition, steam, alkali, HCL, gas, etc.

When the outside of the combustion chamber 160 is coated with an iron plate, the high temperature part of the main body may be painted or insulated with heat-resistant paint, or constructed with fire-resistant insulation brick, castable refractory, etc., to maintain its external surface temperature below 80 degrees Celsius. It is desirable to configure so that.

In this case, when the processing capacity per hour is 2 tons or more, a metering facility may be installed to measure the weight of the incineration material to be carried in. The incinerator inlet and the cleaning port of the combustion chamber may be made of a material that can withstand high temperatures.

And, the grate 131 of the primary combustion unit 130 is rotated at a very slow speed of 0.375rpm at the same time as starting, at this time, the waste resource processing fuel (RDF) such as PVC, PE, PEP, etc. The pyrolysis gas is liquefied while being liquefied inside the combustion chamber 160, and the rapid whirlwind combustion is promoted so that the residual fixed carbon Char and tar are supplied from the inside of the grate and the inner wall of the combustion chamber 160 by the high temperature of the combustion chamber 160. The fuel that comes into contact with the air continuously acts as an ignition booster, causing a continuous exothermic reaction to complete combustion.

Referring to the operation of the present invention made of such a configuration as follows.

As shown in FIG. 4, first, the combustion chamber is heated to 200 ° C. to 500 ° C. by a preheat burner, and liquefaction is promoted by heating a grate heated by injecting waste resource processing fuel such as PVC, PE, and PEP into the combustion chamber. Be sure to

60 ~ 70% by weight of waste resource processing fuel such as PVC, PE, PEP, etc., and sludge or food waste 10 ~ by putting dried sludge or food waste and other wastes into waste resource processing fuel such as PVC, PE, PEP, etc. After 20% by weight and 20-40% by weight of other wastes are maintained, the waste resource processing furnace, sludge and waste are burned rapidly and heated to 1200 ~ 1300 ℃.

That is, the incineration is rapidly heated and pyrolyzed to 1200 to 1300 ° C, and the residual fixed carbon (char) and tar (tar) in the combustion chamber are in contact with the air supplied from the inside of the grate and the inner wall of the combustion chamber by the high temperature of the combustion chamber. Ignition is accelerated, and the rapid whirlwind combustion is promoted, so that complete combustion is achieved by continuous exothermic reaction.

Here, the temperature incinerated by the spent resource fuel to prevent the generation of dioxin during combustion below 900 ℃ to maintain the 1200 ℃ ~ 1300 ℃.

In addition, the incineration material introduced into the combustion chamber is good to ensure that evenly burned air is supplied by the grate to ensure complete combustion when incinerated by the combustion of the waste resources processing fuel.

Subsequently, the deoxidation air is injected into the combustion chamber to inject combustion oxide air to reduce the pollution of the exhaust gas, thereby forming a swirl flame, and the combustion gas is re-burned by the reburn burner installed at the upper part of the combustion chamber to incinerate oxidative combustion. Combustion of unburned material generated from flue gas.

At this time, the outlet temperature of the combustion chamber can be more than 850 degrees Celsius, and in this case, the residence time can be calculated as the volume of the combustion gas converted into a volume at 850 degrees Celsius (retention time = combustion chamber volume / combustion gas volume).

On the other hand, in the case of incineration of a large amount of waste, as shown in Figure 3, having a predetermined inclination angle in a cylindrical shape consisting of a first combustion chamber (200 ') and a second combustion chamber (400'), the rotational power by the gear And rotate the combustion furnace in which the roller 210 'is installed to the outside of the combustion chamber so as to be rotated at 0.3-1 rpm by the inverter, and then burn the first combustion chamber 200' by the burner 410 'at 200 ° C to 500 ° C. Furnace, and waste resource processing fuels such as PVC, PE, and PEP are introduced into the first combustion chamber 200 'to promote liquefaction by heat of the heated combustion chamber.

In addition, 60 to 70 weight of waste resource processing fuel such as PVC, PE, PEP is added to the sludge, food waste and other wastes dried in the waste resource processing fuel such as PVC, PE, PEP, etc., which are put into the first combustion chamber 200 '. % And sludge to 10-20% by weight of food waste and 20-40% by weight of other waste are maintained, and then the waste resource processing furnace, sludge and waste are burned rapidly to be heated to 1200 ~ 1300 ℃.

At this time, the waste in the combustion chamber is rapidly heated and pyrolyzed into gas, and 120 ° C. of air supplied through the air nozzle installed on the inner wall of the combustion chamber flows into the combustion chamber and collides with the waste due to the inclination and flow rate of the air nozzle. Is accelerated to complete combustion.

Then, the oxidized air is injected into the combustion chamber to inject the oxidized combustion air to form a swirl flame, and the exhaust gas is re-burned to burn the unburned material.

As described above, the present invention is used to incinerate sludge, food waste, and other waste generated from sewage sludge, manure treatment plant, paper mill, waste material processing fuel consisting of waste materials such as PVC, PE, PEP, etc. By using, it is possible to reduce the fuel cost by reducing the amount of petroleum, complete combustion is possible because the fluctuation of the calorific value is small, there is an advantage that can lower the concentration of dioxins generated during incineration.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as provided by the following claims. do.

Thus, according to the present invention, by using waste resource processing fuel, it is possible to achieve low cost and high productivity required for incineration of incineration, and to achieve uniform combustion at a high temperature, thereby reducing atmospheric gas emissions.

In addition, the present invention, the installation cost is lower than the conventional incineration facilities, easy to maintain, and there is no problem of the emission gas to prevent pollution due to incineration, and since most combustible incinerators are fueled, Increased effective availability has a superior effect of reducing the cost of existing petroleum energy.

Claims (4)

delete A combustion chamber preheating step of heating the combustion chamber by a preheat burner; An input step of injecting PVC, PE, PEP, dried sludge, and waste into the preheated incineration chamber; An incineration combustion step of incineration to allow rapid combustion of the incinerator in the combustion chamber; A decatalytic oxidation combustion step of injecting decatalyst oxidized air into the combustion chamber to form a swirl flame; And, in the waste incineration method comprising a reburn step of burning the waste by reburning unburned material generated during combustion, In the preheating step, the combustion chamber is preheated to maintain the temperature of the combustion chamber 200 ~ 500 ℃ to liquefy the waste resource processing fuel such as PVC, PE, PEP, In the input step, the waste resource processing fuel such as PVC, PE, PEP, 60-70% by weight is first added to the total weight of the input, and the waste resource processing fuel such as PVC, PE, PEP is liquefied under the preheating condition. While the pyrolysis gasification is performed to perform the ignition promoting role, the waste resources such as PVC, PE, PEP by adding sludge to food waste 10-20% by weight, other waste 20-40% by weight to 100% by weight of the total input The waste is incinerated by processed fuel, In the oxidative combustion step, the incinerator is heated to 1200 ℃ ~ 1300 ℃ to burn the incineration completely characterized in that the incineration method using waste resources processing fuel. delete The method of claim 2, wherein in the oxidative combustion step of the waste resource processing fuel, the incineration material is injected evenly for the combustion of the incineration material so that the complete incineration is incinerated by the combustion of the waste resource processing fuel injected into the combustion chamber. Incineration method using waste resource processing fuel.