KR20190053810A - Burning device - Google Patents

Abstract

The present invention relates to a combustion device, and more specifically, to a combustion device which can generate regenerated fuel made by mixing oil extracted from a polymer waste with water, and is fueled by the generated regenerated fuel. The combustion device according to the present invention introduces a high temperature liquid which maintains a high temperature state thereof by combustion heat of a combustion chamber into a lower portion of a heating unit into which oil to be heated is introduced, such that the oil to be heated can be heated in order to generate oil mist required for generation of the regenerated fuel. Therefore, an additional fuel to heat the oil to be heated does not need to be supplied. Furthermore, since the regenerated fuel is pre-heated in the combustion chamber before being combusted, combustion efficiency is improved.

Description

Burning device

The present invention relates to a combustion apparatus, and more particularly, to a combustion apparatus that can generate a regenerated fuel obtained by mixing oil extracted from a polymer waste with water, and uses the regenerated fuel as a fuel.

In recent years, environmental pollution and warming have become serious problems, and how to recycle conventional wastes and industrial wastes is becoming an important issue. Waste plastics used in most industrial products such as electrical products, household goods, automobiles, and PET bottles among general wastes and industrial wastes are low in recycled use and mostly disposed of as garbage. Because it takes a long time to decompose in a natural state, Pollution and serious environmental pollution.

Accordingly, techniques for treating waste plastics and utilizing them as resources have been actively studied. In order to recycle waste plastics, a method of producing regenerated fuel for use in boilers and combustion devices by obtaining organic gas and oil that can be used as raw materials from waste plastics, or a combustion apparatus using recycled fuels has been devised.

The raw materials of waste plastics are petroleum, fuel oil and gasoline, diesel oil and liquefied gas are also extracted from petroleum. Waste plastic is a high molecular weight polymer composed of carbon and hydrogen. On the other hand, gasoline, diesel oil and fuel oil have low molecular weight. Waste plastics can be regarded as solid petroleum with a large molecular weight and can be converted into liquid and gaseous petroleum by liquefaction and cracking.

In the emulsification apparatus using such a method, waste plastic is selectively injected through a feed inlet of the reactor, and thermal energy is applied to the reactor by a heating means such as a burner to pyrolyze the waste plastic to obtain an oil gas. The temperature of the reactor varies depending on the type of waste plastics, reaction conditions, and the like, but is generally maintained at about 300 to 600 ° C. The oil gas (pyrolysis gas) generated in the pretreatment process through pyrolysis of the waste plastic is produced as oil (pyrolysis oil) through a series of emulsification processes such as liquefaction and separation. In addition, the waste plastic is melted in advance so as to be favorable for pyrolysis, and is put into the reactor.

The pyrolysis oil obtained from the waste plastic is mixed with water and used for the production of recycled fuel (emulsion fuel). Although the pyrolysis oil and water do not dissolve with each other, when the pyrolysis oil and water are mixed with a small amount of the catalyst and stirred at a certain rate, the water is dispersed in the pyrolysis oil in a fine watery state to become a regenerated fuel. Trace amounts of catalyst can be pre-loaded in liquid fuel and in water. Since the regenerated fuel (emulsion fuel) is completely burned during combustion, harmful exhaust gas discharged during burning is significantly smaller than that of the non-emulsified liquid fuel, so that it is eco-friendly and used for heating oil or boiler oil.

Thus, there is a need for an apparatus that can process a series of manufacturing and manufacturing processes until the waste plastics are emulsified and used for the production of regenerated fuels. In addition, since the recycle fuel contains a large amount of water, it has a high ignition point, and is not easily atomized when the nozzle is passed through the nozzle at the initial stage of starting, so that ignition by the igniter is not performed well. Therefore, a combustion apparatus capable of initial ignition is required for smooth combustion of regenerated fuel.

Accordingly, there is a demand for a method capable of enhancing the recyclability of waste plastic (hereinafter referred to as " polymer waste ") and facilitating the supply of regenerated fuel to a combustion apparatus using recycled fuel.

Korean Patent Publication No. 10-2012-0010581: Emulsion fuel ignition device for boiler burner Korean Patent Registration No. 10-0945529: Low Temperature Pyrolysis Emulsification System of Waste Plastics

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and apparatus for recovering waste oil by supplying waste oil generated from a polymer waste to generate vapor, And it is an object of the present invention to provide a combustion apparatus.

In order to solve the above problems, a combustion apparatus according to the present invention is a combustion apparatus for burning a recycled fuel produced by using waste oil and water in which waste oil or polymer waste is liquefied, in a combustion chamber, A heat exchanger for condensing the vapor by the circulating cooling water supplied with the vapor and generating pyrolysis oil; and a heat exchanger for storing the pyrolysis oil generated in the heat exchanger, A cooling water supply unit connected to the heat exchange unit to supply cooling water to the heat exchange unit to condense the vapor, a pyrolysis oil in the pyrolysis oil storage tank, The cooling water supplied from the water storage tank of the supply unit is mixed and the regenerated fuel A regeneration fuel supply pipe connected to the mixing portion and having a passage through which the regeneration fuel can flow and penetrating into the combustion chamber so that the regeneration fuel can be preheated; And a regeneration fuel combustion unit for combusting the regenerant fuel generated in the heat exchange unit and the first gas supplied and generated in the heat exchange unit together in the combustion chamber.

Wherein the heating section includes a first tank section into which the heating object oil flows, a second tank section located below the first tank section and supplied with a high temperature liquid therein, And a circulation unit for connecting the first tank part and the second tank part so that the first tank part is circulated to the first tank part through the second tank part and heated to generate the vapor in the first tank part, A first circulation pipe extending outwardly of the first tank section and extending into the second tank section; a second circulation pipe connected to the first circulation pipe in the second tank section and extending upwardly to penetrate into the first tank section, And at least one rising pipe for raising the heating object oil flowing through the pipe to the first tank portion.

The combustion apparatus of the present invention further includes a high temperature liquid heating means for maintaining the hot liquid in the second tank portion in a heated state and the high temperature liquid heating means is a high temperature liquid heating means for heating the high temperature liquid extending from the second tank to the combustion chamber A high temperature liquid heating induction portion formed around the combustion chamber and through which the high temperature liquid introduced from the discharge pipe is circulated to induce heating; and a high temperature liquid heating induction portion extending from the heating induction portion to the second tank, And a high-temperature liquid supply pipe for supplying the high-temperature liquid to the second tank.

The heat exchanger includes a vapor storage tank in which vapor generated in the heating unit is supplied to the inner space; A water supply pipe extending from the upper portion of the vapor storage tank to the water storage tank and supplying the water in the water storage tank to the vapor storage tank; A water discharge pipe extending from a lower portion of the tank to the water storage tank to supply water into the storage tank or supply water in the oil storage tank to the mixing portion and a water discharge pipe extending in a spiral shape in the oil storage tank, And a cooling water supply unit including a spiral heat exchanger tube connected to the water discharge pipe at the other side thereof for cooling the cooling water flowing in the heat exchange tube with the vapor in the vapor storage tank.

Alternatively, the heat exchanger may include a vapor storage tank in which the vapor generated by the heating unit is supplied to the inner space; A water supply pipe extending from the upper portion of the vapor storage tank to the water storage tank and supplying the water in the water storage tank to the vapor storage tank; A cooling water supply unit extending from a lower portion of the tank to the water storage tank and supplying a water in the vapor storage tank to the storage tank or supplying the water to the mixing unit; A spiral heat exchanging part extending in a spiral shape in the vapor storage tank and having one side connected to the vapor supply pipe extending from the heating part and the other side connected to the pyrolysis oil storage tank so that the vapor flowing in the inside of the vapor storage tank exchanges heat with the cooling water in the vapor storage tank A tube may be provided.

 The combustion apparatus according to the present invention heats the object oil to be heated by flowing the high temperature liquid that maintains the high temperature state by the combustion heat of the combustion chamber to the lower portion of the heating section into which the object oil to be heated flows, The regeneration fuel is preheated in the combustion chamber and then burned, so that the combustion efficiency can be increased.

1 is a view of a combustion apparatus according to a first embodiment of the present invention,
Fig. 2 is a partial perspective view of the combustion apparatus of Fig. 1,
3 is a view of a combustion apparatus according to a second embodiment of the present invention,
4 is a view of a combustion apparatus according to a third embodiment of the present invention.

Hereinafter, a combustion apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a combustion apparatus 1 according to a first embodiment of the present invention. The combustion apparatus (1) according to the first embodiment of the present invention uses the oil and water to be heated to liquefy the waste oil or the polymer waste in itself, and burns the generated recovered fuel in the combustion chamber.

The combustion apparatus 1 according to the first embodiment of the present invention includes a heating unit 10, a vapor supply pipe 35, a heat exchange unit 40, a thermal decomposition oil storage tank 50, a mixing unit 70, A regenerated fuel supply pipe 80, a regenerated fuel combustion unit 90, and a high temperature liquid heating unit.

In the heating unit 10, an object to be heated is heated inside, and vapor is generated.

The heating section 10 includes a first tank section 11, a second tank section 16, and a circulation unit 20.

The first tank unit 11 is provided with a heating object inlet pipe 12 through which the heating object oil flows, and a first internal space 11a for storing heating object oil is formed.

The heating object inlet pipe 12 is connected to the first tank portion 11 and the second tank portion 11 so that the first tank portion 11 can be prevented from flowing into the first tank portion 11, An extension 12a and a vertical extension 12b extending vertically downward at the end of the horizontal extension 12a.

The second tank portion 16 is located below the first tank portion 11 and has a second internal space 16a through which hot liquid is supplied.

Referring to FIG. 1, the lower end of the first inner space 11a, which is opened downward, is closed while the upper end of the first tank portion 11 is engaged with the second tank portion 16 having the upper end closed.

The circulating unit 20 is heated by the heating object oil in the first tank unit 11 through the second tank unit 16 while being reintroduced into the first tank unit 11 so that the vapor in the first tank unit 11 The first tank portion 11 and the second tank portion 16 are connected to each other.

The circulation unit 20 includes a first circulation pipe 21 extending outside the lower portion of the first tank portion 11 and extending into the lower portion of the second tank portion 16, Which is connected to the circulation pipe 21 and extends upward so as to communicate with the inside of the first tank part 11 to raise the heating object oil flowing into the first tank part 11 through the first circulation pipe 21, A first chamber (23) which is located in the second tank portion (16) and which connects the first circulation pipe (21) and a plurality of upwardly extending risers (23) And a plurality of uprising pipes 23 which are received in the first inner space 11a of the first tank portion 11 and penetrate inwardly in the up and down direction and which are seated on the upper end of the second tank portion 16, And a second chamber 27 communicating therewith.

Although not shown, it is preferable that the ceramic coating layer is formed on the inner circumferential surface of the first tank portion 11 or the second chamber 27 so that the heating object to which the waste oil or the polymer waste is liquefied is not pressed.

On the other hand, the first tank portion 11 may be applied so that the lower end of the first inner space 11a is closed so that the second chamber 27 is located at the lower portion of the first inner space 11a . In this case, the second chamber 27 is opened only upward, and a plurality of uprising pipes 23 positioned downward to allow the heating object oil flowing into the uprising pipe 23 to flow into the first tank part 11 It is preferable that a communication hole (not shown) is formed.

The vapor supply pipe 35 extends from the upper end of the first tank unit 11 to the upper end of the vapor storage tank 41 of the heat exchange unit 40 to be described later to form a flow path through which the vapor can be transferred to the vapor storage tank.

The heat exchanging part 40 is a part for condensing the vaporized oil supplied to the inside by the circulating cooling water to generate pyrolysis oil. The heat exchanging part 40 includes a vapor storage tank 41 in which the vapor generated in the heating part 10 is supplied to the inside, And a cooling water supply part (42) for condensing the vapor in the storage tank (41).

The vapor storage tank 41 has a third internal space 41a communicating with the vapor supply pipe 35 to receive the vapor therein.

The cooling water supply unit 42 includes a water storage tank 43 in which water for cooling the vapor is stored and a water storage tank 43 extending from the upper portion of the vapor storage tank 41 to the water storage tank 43, A water supply pipe 44 for supplying water in the storage tank to the vapor storage tank 41 and a water storage tank 43 for supplying water in the vapor storage tank 41 to the storage tank And a water discharge pipe (45) for supplying the water to the mixing portion (70).

The water supply pipe 44 has a first water supply pipe 44a extending from the vapor storage tank 41 to the first pump and a second water supply pipe 44b extending from the first pump 46 to the water storage tank 43 ).

The cooling water supply unit 42 extends in a spiral shape in the vapor storage tank 41 and is connected to the first water supply pipe 44a at one side and the water discharge pipe 45 at the other side, And a heat exchange pipe (47).

The water vapor in the vapor storage tank 41 is condensed by the cooling water which is moved into the spiral heat exchange pipe 47. [

The pyrolysis oil storage tank 50 is connected to the vapor storage tank 41 of the heat exchange unit 50 to store the pyrolysis oil generated in the vapor storage tank 41.

The mixing portion 70 is a portion where pyrolysis oil in the pyrolysis oil storage tank 50 and cooling water supplied from the water storage tank 43 or discharged from the vapor storage tank 41 are mixed to generate regenerated fuel.

The mixing section 70 includes a first branch pipe 71 extending from the pyrolysis oil storage tank 50, a second branch pipe 72 extending from the water discharge pipe 45, And a main pipe (73) connected to the engine and supplied with the thermal decomposition oil and cooling water. Although not shown, the main pipe 73 may be provided with a static mixer (not shown) for facilitating the mixing of the pyrolysis oil and the cooling water, a surfactant may be added to facilitate mixing of the cooling water and the thermal decomposition oil have.

The regeneration fuel supply pipe 80 is connected to the main pipe 73 of the mixing pipe and has a passage through which the regeneration fuel can flow. The regeneration fuel is supplied into the combustion chamber 85 so as to preheat the regeneration fuel, And the other side passes through the outside of the combustion chamber 85 and is connected to the regenerative fuel combustion section 90.

The regenerated fuel combustion section 90 burns the regenerated fuel supplied from the regenerated fuel supply pipe 80 and the first gas generated in the heat exchange section 40 together in the combustion chamber 85.

1, the combustion apparatus 1 according to the first embodiment of the present invention includes an oil supply pipe 41 extending from the upper portion of the oil storage tank 41 and extending to the combustion chamber 85, A gas supply pipe 101 for supplying the first gas to the combustion chamber 85 and a vacuum pump 103 installed at one side of the gas supply pipe 101 for sucking the first gas in the vapor storage tank.

The gas supply pipe 101 has a first gas supply pipe 101a extending from the vapor storage tank 41 to the vacuum pump 103 and a second gas supply pipe 101b extending from the vacuum pump 103 to the regenerated fuel combustion unit 90. [ (101b).

The regenerative fuel combustion unit 90 is connected to the other side of the regenerative fuel supply pipe 80 and injects regenerated fuel and air into the combustion chamber 50 to generate a flame at the center of the combustion chamber 50 (Not shown), an air supply unit 93 connected to the air supply unit 93 to supply the regenerated fuel and the first gas to the central nozzle unit 91, And an initial fuel supply unit 95 for supplying LPG, which is an initial fuel used for generating an initial flame, of the central nozzle unit 91 for heating.

The combustion apparatus 1 according to the first embodiment of the present invention includes an air supply unit 93 for initial ignition so as to preheat the sterilizing fuel supplied to the central noble unit and air supplied from the initial fuel supply unit 95 And a control unit (not shown) for controlling the supply amount of the LPG.

The hot liquid heating means 110 is for maintaining the hot liquid in the second tank portion 16 in a heated state and includes a hot liquid discharge pipe 111 extending from the second tank 16 to the combustion chamber 85, A high temperature liquid heating induction part 114 formed around the chamber 86 inside the combustion chamber 85 to receive the high temperature liquid introduced from the discharge tube 111 and induce high temperature liquid heating through the combustion heat of the combustion chamber, A high temperature liquid supply pipe 117 extending from the first tank 16 to the second tank 16 and supplying the heated high temperature liquid to the second tank 16 and a high temperature liquid supply pipe 117 provided on one side of the high temperature liquid supply pipe 117, And a second pump 119 for pumping.

The hot liquid supply pipe 117 is connected to the first high temperature liquid supply pipe 117a extending from the upper portion of the second tank 16 to the second pump 119 and the second high temperature liquid supply pipe 117b extending from the second pump to the combustion chamber ).

That is, the oil to be heated which flows into the uprising pipe 18 is heated by the hot liquid which has been heated in the combustion chamber and introduced into the hot liquid supply pipe 117, so that the vapor is generated.

The combustion apparatus 1 according to the present invention is characterized in that the high temperature liquid in which the high temperature state is maintained by the combustion heat of the combustion chamber 85 flows into the lower portion of the heating section 40 into which the heating object oil flows, It is not necessary to supply additional fuel for heating the oil to be heated, and since the regenerated fuel is preheated in the combustion chamber and then burned, the combustion efficiency can be increased.

2 shows a combustion apparatus according to a second embodiment of the present invention. Components having the same reference numerals as in the drawings shown above are denoted by the same reference numerals.

The combustion apparatus 2 according to the second embodiment of the present invention has the same structure as the first embodiment of the present invention except for the uprising pipe 123. [

The ascending pipe 123 is connected to the first circulation pipe 13 penetrating into the lower internal space of the second tank unit 16 and extends to the first tank unit 11, Extends in the direction of the first tank part (1) and extends in a spiral shape so as to widen the heat exchange area with the high temperature liquid.

The combustion apparatus according to the second embodiment of the present invention is configured such that the uprising pipe 123 is formed in a spiral shape so as to secure a wider heat exchange area with the hot liquid of the heating object oil, have.

3 shows a combustion apparatus according to a third embodiment of the present invention. Components having the same reference numerals as in the drawings shown above are denoted by the same reference numerals.

The combustion apparatus 3 according to the third embodiment of the present invention has the same structure as the first embodiment of the present invention except for the heat exchanging section.

The heat exchange unit 240 is provided with a heat exchange tank 241 and a vapor generated by the heating unit 10 and extended in a spiral shape in the vertical direction in the space inside the heat exchange tank 241 to be supplied to the pyrolysis oil storage tank 50 An extended vapor heat exchange pipe 242 and a cooling water supply unit 242 for supplying cooling water into the heat exchange tank 241.

The cooling water supply unit 242 includes a water storage tank 43 in which water for cooling the vapor is stored and a water storage tank 43 extending from the top of the heat exchange tank 241 to the water storage tank 43 through the first pump 46. [ A water supply pipe 44 for supplying the water in the tank to the heat exchange tank and a water supply pipe 44 extending from the lower part of the heat exchange tank 41 to the water storage tank 43 to supply the cooling water in the heat exchange tank 41 to the water storage tank, And a water discharge pipe (45) for supplying the water to the discharge pipe (70).

The heat exchanging unit 240 condenses the vapor in the vapor heat exchange pipe 242 by the cooling water supplied into the heat exchange tank 241 to generate pyrolysis oil.

The pyrolysis oil storage tank 50 is connected to the vapor heat exchange pipe 242 of the heat exchange unit 240 to store the pyrolysis oil generated in the vapor heat exchange pipe 242.

Up to now, the combustion apparatus according to the present invention has a structure in which the high temperature liquid, which is maintained at a high temperature state by the combustion heat of the combustion chamber 85, flows into the lower portion of the heating section 10 into which the heating object oil flows, It is not necessary to supply a separate fuel for heating the oil to be heated, and since the regenerated fuel is preheated in the combustion chamber and then burned, the combustion efficiency can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments or constructions. It will be apparent to those skilled in the art that various modifications and variations can be made therein. I will understand the point. Accordingly, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

1: Combustion device
10: heating section 40: heat exchange section
50: Pyrolysis oil storage tank 70: Mixed portion
80: regeneration fuel supply pipe 90: regenerated fuel combustion unit
110: high temperature liquid heating means

Claims (5)

1. A combustion apparatus for burning in a combustion chamber a regenerant fuel produced by using oil and water to be heated, in which waste oil or polymer waste is liquefied,
A heating unit for heating the incoming waste oil or the heating object to generate vapor,
A heat exchanger for supplying the vapor and condensing the vapor by circulating cooling water to generate pyrolysis oil;
A pyrolysis oil storage tank for storing the pyrolysis oil generated in the heat exchange unit,
A cooling water supply unit connected to the heat exchange unit to supply cooling water into the heat exchange unit to condense the vapor,
A mixing portion in which the pyrolysis oil in the pyrolysis oil storage tank and the cooling water discharged from the heat exchange portion or supplied from the water storage tank of the cooling water supply portion are mixed to generate the regenerated fuel,
A regeneration fuel supply pipe connected to the mixing portion and having a passage through which the regeneration fuel can flow, the regeneration fuel supply pipe passing through the combustion chamber to preheat the regeneration fuel,
And a regenerated fuel combustion unit for combusting the regenerated fuel supplied from the regenerated fuel supply pipe and the first gas generated and supplied from the heat exchange unit together in the combustion chamber. The apparatus according to claim 1, wherein the heating unit
A first tank portion into which the heating object oil flows,
A second tank part located below the first tank part and supplied with hot liquid into the second tank part,
The heating object oil in the first tank unit is circulated through the second tank unit to the first tank unit and connected to the first tank unit and the second tank unit so that vapor can be generated in the first tank unit Comprising a circulation unit,
The circulation unit
A first circulation pipe extending to the outside of the first tank unit and extending into the second tank unit; a second circulation pipe connected to the first circulation pipe in the second tank unit and extending upwardly to penetrate into the first tank unit, And at least one rising pipe for raising the heating object oil flowing through the first circulation pipe to the first tank portion. 3. The method of claim 2,
Further comprising high temperature liquid heating means for maintaining the high temperature liquid in the second tank portion in a heated state,
The high temperature liquid heating means
A high temperature liquid discharge pipe extending from the second tank to the combustion chamber,
A high-temperature liquid heating inducing unit formed around the combustion chamber to induce heating while circulating the high-temperature liquid introduced from the discharge pipe;
And a high temperature liquid supply pipe extending from the heating induction portion to the second tank and supplying the high temperature liquid heated by the heat of the combustion chamber to the second tank. The heat exchanger according to claim 1,
A vapor storage tank in which the vapor generated by the heating unit is supplied to the inner space;
A water supply pipe extending from the upper portion of the vapor storage tank to the water storage tank and supplying the water in the water storage tank to the vapor storage tank; A water discharge pipe extending from a lower portion of the tank to the water storage tank to supply water into the storage tank or supply water in the oil storage tank to the mixing portion and a water discharge pipe extending in a spiral shape in the oil storage tank, And a cooling water supply unit including a spiral heat exchanger pipe connected to the water discharge pipe and having cooling water flowing therein, for heat exchange with vapor in the vapor storage tank. The heat exchanger according to claim 1,
A vapor storage tank in which the vapor generated by the heating unit is supplied to the inner space;
A water supply pipe extending from the upper portion of the vapor storage tank to the water storage tank and supplying the water in the water storage tank to the vapor storage tank; A cooling water supply unit extending from a lower portion of the tank to the water storage tank and supplying a water in the vapor storage tank to the storage tank or supplying the water to the mixing unit;
A spiral heat exchanging part extending in a spiral shape in the vapor storage tank and having one side connected to the vapor supply pipe extending from the heating part and the other side connected to the pyrolysis oil storage tank so that the vapor flowing in the inside of the vapor storage tank exchanges heat with the cooling water in the vapor storage tank And a pipe connected to the combustion chamber.

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