KR101517780B1

KR101517780B1 - Eco-friendly energy generation using waste combustion furnace

Info

Publication number: KR101517780B1
Application number: KR1020140025459A
Authority: KR
Inventors: 손연홍
Original assignee: 손연홍
Priority date: 2014-03-04
Filing date: 2014-03-04
Publication date: 2015-05-06

Abstract

The present invention relates to a waste combustion furnace apparatus. The eco-friendly energy generation apparatus using a waste combustion furnace comprises: a combustion furnace (1); a fuel supplying unit (2) to supply waste fuel; and a steam turbine (4) and a generator (5) which are rotated by steam produced in the combustion furnace. The combustion furnace comprises: a first combustion room (6) constructed with heat resistant steel plates of a certain thickness; a second combustion room (7) to imperfectly re-combust combusted gas and uncombusted materials produced during a first combustion on a lower portion of the first combustion room; a third combustion room (8) to further combust combustion gas produced in the second combustion room; a re-combustion room (9) to mix combustion gas in the third combustion room and imperfectly combusted gas produced in the second combustion room, and re-combusting the mixture; and a steam/hot water generation unit (10) having a plurality of tanks stacked on top of each other to produce steam and hot water from combustion heat in the re-combustion room. Combustible waste can perfectly be combusted in the combustion furnace to prevent air pollution, and superheated steam can be produced using heat generated in the combustion apparatus to drive the steam turbine. Therefore, electricity is generated during waste combustion, and heat generated in the combustion apparatus is collected and reused without increasing a surrounding temperature; thus generating an eco-friendly energy.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waste-

The present invention relates to an eco-friendly energy generating device using a waste combustion furnace, and more particularly, to a burner for burning combustible waste, comprising a combustion furnace that generates steam by using heat generated from a combustion furnace, And is a technology for generating electricity by supplying superheated steam to a steam turbine. The technology is related to an environmentally friendly energy generating device that generates energy by using heat generated without discharging environmental pollutants during waste treatment.

Waste is a byproduct of everyday life and industrial activities. Depending on the type of disposal, municipal wastes are buried or incinerated except that they can be recycled, and industrial wastes are generally disposed of by incineration .

However, in the waste incineration process, a large amount of gas or dust pollutants polluting the atmosphere are generated, and technologies for preventing air pollution include gravity dust collecting facilities, inertial dust collecting facilities, centrifugal dust collecting facilities, washing and collecting facilities, There are known facilities such as a facility, an acoustic dust collection facility, an absorption facility, an absorption facility, a direct combustion facility, a catalyst reaction facility, a condensation facility, and a soil microbial treatment facility.

There are known technologies for recovering incinerated heat in the form of steam using a waste heat boiler and using it as a fuel resource by supplying hot water for heating using incineration heat.

There is also known a top-down multi-stage combustion apparatus using a waste rubber-processed solid fuel of Korean Patent No. 10-0510378 as a prior art related to a combustion apparatus for preventing air pollution by promoting combustion during waste combustion, 1, a core technology of this prior art is a secondary combustion chamber (a) and a secondary combustion chamber (a) which is provided at a lower portion of the primary combustion chamber and for discharging unburned gas and combustion residue generated in the primary combustion chamber b), wherein the secondary combustion chamber has a plurality of heat filter blocks (c) each having a rectangular air passage spaced apart at a predetermined interval to form a combustion gas passage (d) so that unburned gas and combustion residues pass therethrough and are combusted (E) is formed on the rectangular side wall of the air passage so as to be inclined downward at an angle of 45 degrees toward the center of the block.

The combustion apparatus of the prior art having the above-described structure is a combustible polymer waste which is heated at a high temperature of 1300 DEG C or higher in an incinerator in which combustion condition is optimized by utilizing a regenerated solid fuel such as waste rubber waste such as waste tire as a low- In the above conventional art, the air blowing hole (e) formed on the rectangular sidewall of the air passage is directed toward the center of the block so that contaminants such as harmful gases and heavy metals are not discharged. The waste combustion does not proceed for more than 5 minutes, and as shown in the photograph of FIG. 2, there is a problem that the waste combustion gas is exhausted as it is during the 5-minute burning, A problem that a function as a device can not be performed occurs.

In addition, an energy saving type eco-friendly waste recycling apparatus in which a heating furnace using a flammable waste as a fuel and a heat exchanger are connected to each other is disclosed in Korean Patent No. 10-1309000 proposed by the inventor of the present invention as a prior art for supplying hot water using incineration heat. As shown in FIG. 3, a steel fire-resistant steel sheet 103 coated with a refractory coating is provided on the outer peripheral edge of a square-shaped body 101 having a combustion chamber divided into three stages, The water supplied from the water supply pipe 600 is stored at the inner edge of the wall 102 and heated to the high temperature combustion heat of the heating furnace 100 so that the hot water is heated by the hot water pipe 240 A water heating unit 104 for supplying the water to the heat storage tank 220 of the customer 500 or the heat exchanger 200 is formed. In the prior art of FIG. 3, the reference numerals are omitted from the description of the present invention.

In the prior art for supplying the hot water, the outer wall of the combustion chamber communicates with the water heating portion 104, and water is heated in the water heating portion by the heat of combustion in the heating furnace. However, since the water heating portion is constituted by the outer wall of the heating furnace, The heat generated in the heating furnace can not be recycled. As a result, the outer wall of the heating furnace is heated to make it difficult to approach the periphery of the heating furnace, There is a problem that the ambient air needs to be cooled for the work around the heating furnace due to the heat of the heater.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a steam generator for a steam turbine, The present invention is to provide a combustion apparatus that brakes a combustion apparatus having a structure that generates superheated steam by supplying steam to a steam turbine, and does not raise the ambient temperature while recycling the heat generated in the combustion apparatus.

According to an aspect of the present invention, there is provided an apparatus for producing an environmentally friendly energy using a waste combustion furnace. The apparatus includes a combustion furnace, a fuel supply unit for supplying the waste fuel, and a steam generating unit Wherein the combustion furnace includes a turbine and a generator, wherein the combustion furnace has a primary combustion chamber formed of a space sealed by a heat resistant steel plate having a predetermined thickness, and an incomplete combustion gas and unburned material generated in the primary combustion at a lower portion of the primary combustion chamber, And a re-combustion chamber in which the combustion gas from the third combustion chamber and the incomplete combustion gas discharged from the second combustion chamber are mixed with each other to re-burn the combustion gas generated in the secondary combustion chamber and the secondary combustion chamber A plurality of tanks are stacked on the outer wall of the re-combustion chamber so as to generate steam and hot water by the heat of combustion of the re- Coupled to it to provide a clean energy generation apparatus using a waste combustion, characterized in that for forming a steam / hot water generation.

The secondary combustion chamber is formed by a plurality of secondary combustion blocks spaced apart from each other at a predetermined interval. The secondary combustion block is formed of a quartz cylinder having a narrow width, a long vertical length, And a plurality of air discharge openings are formed at regular intervals on both side vertical plane plates constituting the tetragonal cylindrical body, and the air discharge openings are formed at a piercing angle (?) Of 13 to 16 degrees with respect to the horizontal axis.

The steam / hot water generator includes a steam generation tank storing water on the outer wall of the re-combustion chamber and generating steam by the heat of combustion of the combustion furnace, water stored on the outer wall of the steam generation tank, And a secondary preheating tank for storing water in the outer wall of the primary preheating tank and heating the water to be supplied by receiving the hot water of the primary preheating tank are formed in a laminated structure.

A water level controller is installed on the steam generating tank at one side thereof and connected to the first water level sensor, and a water level controller is installed at an upper side of the steam generating tank to form a superheated steam space for heating the steam generated by the combustion heat of the combustion furnace, The other side of the steam generating tank is provided with a superheated steam discharge port for supplying superheated steam generated in the superheated steam space to the steam turbine.

The first preheating tank is equipped with a hot water supply pipe for supplying hot water heated by the heat of the steam generating tank to one side of the first preheating tank, a hot water feed pump installed on the upper part of the hot water supply pipe, a connection between the hot water supply pipe and the steam generation tank The water supply pump and the water supply valve are connected to each other so that the cold water is heated by the hot water heat of the first preheating tank by receiving the cold water from the outside and the first preheating tank And at least one overflow valve is provided between the first preheating tank and the second preheating tank so that when the first preheating tank becomes less than a certain water level, So that hot water can be automatically transferred to the primary preheating tank through the overflow valve.

The steam generating tank receives hot water preheated from the first preheating tank only in a lower space corresponding to 2/3 of the steam generating tank so that steam can be generated within a short time due to the heat of combustion of the furnace, 3 is heated by the combustion heat of the combustion furnace to generate superheated steam at a high pressure so as to prevent the hot water from being filled in the superheated steam space so as to supply the superheated steam to the steam turbine. The hot water supply pump for sucking the hot water of the first preheating tank is driven according to the first level sensor signal of the steam generating tank so that the steam or hot water of the steam generating tank can be conveyed unidirectionally through the hot water check valve.

The combustible waste according to the present invention is completely burned in the combustion furnace to prevent air pollution caused by the incomplete combustion gas and generates superheated steam using the heat generated in the combustion device to generate electricity in the combustion process of waste by driving the steam turbine The heat generated in the combustion apparatus is recovered and recycled, and the ambient temperature is not raised, thereby generating the effect of generating environment-friendly energy.

Figures 1 to 3 are diagrams illustrating the prior art.
4 is a conceptual view of an environmentally friendly energy generating device using a waste combustion furnace according to the present invention.
5 is a view showing a frontal structure of an environmentally friendly energy generating apparatus using a waste combustion furnace according to the present invention.
6 is a diagram illustrating a side structure of an environmentally friendly energy generating apparatus using a waste combustion furnace according to the present invention.
FIG. 7 is a view showing the outer shape of a secondary combustion chamber of an environmentally friendly energy generating device using a waste combustion furnace according to the present invention. FIG.
8 is a cross-sectional view of a secondary combustion block of a secondary combustion chamber of an environmentally friendly energy generating device using a waste combustion furnace according to the present invention.
9 is a cross-sectional view illustrating an air discharge port of a secondary combustion block in a secondary combustion chamber of an environmentally friendly energy generating device using a waste combustion furnace according to the present invention.
10 is a view showing a steam / hot water generating unit of an environmentally friendly energy generating apparatus using a waste combustion furnace according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions that may obscure the subject matter of the present invention will not be described in detail. It should also be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings and the inventor is not limited to the concept of terminology for describing his or her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As shown in Fig. 4, the eco-friendly energy generating device using the waste combustion furnace according to the present invention comprises a combustion furnace 1, a fuel supply unit 2 for supplying combustible waste fuel to the fuel inlet at an upper portion of the furnace, (3) for supplying water for generating steam to the steam generator (1), a steam turbine (4) rotating by steam generated from the combustion furnace, and a generator (5) for generating electricity by the rotational force of the steam turbine .

As shown in Figs. 4 and 5, the combustion furnace 1 includes a primary combustion chamber 6 formed of a space sealed by a heat resistant steel plate having a predetermined thickness, and an incomplete combustion gas And a secondary combustion chamber (7) for re-burning the unburned material, a tertiary combustion chamber (8) for further combusting the combustion gas generated in the secondary combustion chamber, and a combustion gas in the tertiary combustion chamber and incomplete combustion And a steam / hot water generating unit 10 having a plurality of tanks stacked on the outer wall of the re-combustion chamber so as to generate steam and hot water by the combustion heat of the re-combustion chamber, As shown in Fig. 5, the combustion gas generated in the reheat combustion chamber can be clearly seen in the conventional combustion furnace and the conventional combustion furnace of Fig. 3, on .

As shown in FIGS. 5 and 6, the primary combustion chamber 6 is provided with a stack 11 for burning the waste fuel injected from the outside, and an ignition burner 12 for igniting the waste combustion injected into the stack is installed And a stack drive motor (13) for shaking the stack to form an air gap between the stacked waste fuel and the stack is installed. The primary combustion chamber 6 may be formed by further adding a refractory material to the inner wall of the steel plate.

As shown in Fig. 8, the secondary combustion chamber 7 is formed of a heat-resistant steel sheet in the form of a cylinder having a hexahedron structure, and a plurality of secondary combustion blocks 14 are disposed inside the cylinder 7 and 8, the front plate 16 of the cylinder is provided with a blowing opening (not shown) for forcibly supplying outside air to the secondary burning block 14 And a combustion gas inlet 18 through which the combustion gas and the incomplete combustion material generated in the primary combustion chamber flow downward are formed in each of the two sides of the top plate 15 and the secondary combustion block 14 of the top plate 15, The lower face plate 19 of the cylinder forms a plurality of flame exhaust holes 20 through which the flames burned in the secondary combustion chamber are discharged downward. One side plate 16a of the cylinder is provided with combustion And a plurality of combustion gas outlets 21 connected to the holes 14b are formed.

As shown in FIG. 10, the secondary burner block 14 is formed as a hexagonal tubular structure having a narrow width, a long vertical length, and an internal space, As shown in FIG. 9, a plurality of air discharging openings 23 are uniformly distributed over the entire area at regular intervals on both side vertical plane plates 22 forming a quadrangular cylinder.

As shown in FIG. 9, the air outlet 23 is formed by piercing at a predetermined angle with respect to the horizontal axis, and is formed at a piercing angle? Of 13 to 16 degrees. The air discharge port 23 discharges external air forcibly supplied through the opening of one side of the secondary combustion block 14 constituting a square cylinder from the blowing port 17 and discharges the air from the primary combustion chamber 6 The flame is mixed with the combustion gas introduced through the combustion gas inlet 18 into a vortex, and the flame generated by the combustion is generated by a plurality of flame exhaust holes 20 formed in the bottom plate 19 of the quadrangular cylinder .

If the piercing angle? Of the air outlet 23 is less than 13 degrees, the discharged air is orthogonal to the combustion gas in the primary combustion chamber introduced through the combustion gas inlet 18, As the flow is obstructed, the combustion amount of the waste fuel per hour is less than 5 m 3 / h based on the combustion furnace having the same size, and the combustion temperature is less than 800 ° C., resulting in the incomplete combustion state.

If the puncture angle alpha of the air outlet 23 is formed to exceed 16 degrees, the discharged air rapidly pushes down the combustion gas in the primary combustion chamber flowing through the combustion gas inlet 18, so that the secondary burner block 14), the burning amount of the waste fuel per hour is less than 4 m 3 / h based on the burner having the same size and the burning temperature is less than 900 ° C., Combustion will occur.

Therefore, by forming the air outlet opening 23 at a piercing angle? Of 13 to 16 degrees, the combustion gas in the primary combustion chamber, which flows into the air discharge port and flows through the combustion gas inlet 18, forms a vortex So that the combustion amount of the waste fuel per hour is 10 m 3 / h or more based on the combustion furnace having the same size, and the combustion is carried out at a combustion temperature of 1300 to 1600 ° C. to enable complete combustion will be. Table 1 summarizes these figures.

Perforation angle (°) Combustion amount (㎥ / h) Burning temperature (℃) Combustion state Less than 13 5 to 6 800 Incomplete combustion 13-16 10-12 1300 ~ 1600 Complete combustion Exceeding 16 4 to 5 900 Incomplete combustion

The steam / hot water generating portion 10 is formed on the outer wall of the re-burning chamber 9, and as shown in FIGS. 5 and 6, water is stored in the outer wall of the re-burning chamber 9, A first preheating tank 25 for storing water in the outer wall of the steam generating tank and generating heat by receiving the heat of the steam generating tank, And a secondary preheating tank 26 for receiving the hot water heat of the primary preheating tank and heating the water to be supplied, is formed by joining the secondary preheating tank 26 in a structure of sequentially stacking from the heating unit.

10, a water level controller 28 connected to the first water level sensor 27 is installed at one side of the steam generating tank 24, and a water level controller 28 connected to the steam level of the combustion heat of the combustion furnace A water level adjuster 28 is installed to form a superheated steam space 29 for heating the steam generated by the steam generator.

A superheated steam discharge port 30 is formed at the other side of the steam generating tank 24 to supply superheated steam generated in the superheated steam space 29 to the steam turbine.

10, the first preheating tank 25 is provided with a hot water supply pipe 31 for supplying hot water heated by the heat of the steam generating tank 24 to the steam generation tank, A hot water feed pump 32 is installed on the upper part and a hot water check valve 33 is provided on the piping connecting the hot water supply pipe 31 and the steam generation tank 24.

The second preheating tank 26 is formed by connecting the water supply pump 34 and the water supply valve 35 so that the cold water is heated by the hot water heat of the first preheating tank 25 by receiving the cold water from the outside, And a second water level sensor 36 is installed.

At least one overflow valve 37 is provided between the primary preheating tank 25 and the secondary preheating tank 26. When the primary preheating tank 25 is below a certain level, 26 can be automatically transferred to the primary preheating tank 25 through the overflow valve 37. [

The steam generating tank 24 and the primary and secondary preheating tanks 25 and 26 are provided with a plurality of spacing openings 38 on their side surfaces and bottom surfaces so that respective tanks are maintained in a constant volume, As shown in the figure, the steam generation tank 24 and the primary and secondary preheating tanks 25 and 26 are provided with a screw 39 which is narrowed downward in the front and rear lower portions and driven by a motor at the lower end thereof, So as to collect the unburnt material accumulated in the lower part. The screw 39 is the same as the screw 109 shown in Fig.

The steam generating tank 24 of the steam / hot water generating unit 10 receives the hot water preheated from the first preheating tank 25 only in the lower space corresponding to 2/3, And the upper one-third space of the steam generating tank is heated by the combustion heat of the combustion furnace so that the hot water is not charged so as to become the superheated steam space 29, And supplied to the steam turbine.

The hot water of the first preheating tank 25 is supplied to the first preheating tank 25 in accordance with the signal of the first water level sensor 27 of the steam generating tank 24, The hot water supply pump 32 for sucking the hot water of the steam generating tank is driven so that steam or hot water of the steam generating tank can be fed through the hot water check valve 33 in one direction without flowing backward.

The first preheating tank 25 and the second preheating tank 26 are filled with only hot water so that the hot water of the second preheating tank 26 supplied from the outside is installed at the threshold level of the first preheating tank 25 And is transferred to the primary preheating tank 25 through the overflow valve 37 which is automatically opened and closed according to the level of the primary preheating tank 25. [

That is, when the water level drops as the hot water of the steam generating tank 24 is generated as steam, the water level controller 28 and the first water level sensor 27 detect the water level to drive the hot water feed pump 32, When the water level of the preheating tank 25 is lowered to a certain level, the water level of the preheating tank 25 is detected by the off-flow valve 37 to be supplied to the secondary preheating tank 26 And the water level of the second preheating tank 26 is lowered to a level lower than the predetermined water level, the water level is detected by the second water level sensor 36 and the water level is detected by the water supply pump 34 So that water is supplied from the outside.

The steam generating tank 24 contacting with the re-combustion chamber 9 through the steam / hot water generator 10 has a space in which the superheated steam can be generated by the heat of combustion in the re-burner chamber 9, The hot water generated in the steam generating tank 24 can be used as hot water through the hot water discharge port and is generated in the steam generating tank 24 And the water is preheated by using the heat to be supplied to the steam generating tank 24, thereby producing eco-friendly energy for reducing the heat of combustion furnace without loss.

1: combustion furnace 2: fuel supply part
3: Feedwater pump 4: Steam turbine
5: Generator 6: Primary combustion chamber
7: Secondary combustion chamber 8: Thirdary combustion chamber
9: Re-burning disappear 10: Steam / hot water generator
11: stack 12: ignition burner
13: stack drive motor 14: secondary drive block
15: upper plate 16: front plate
17: blowing port 18: combustion gas inlet
19: bottom plate 20: flame outlet ball
21: combustion gas outlet 22: vertical plane plate
23: air outlet 24: steam generating tank
25: primary preheating tank 26: secondary preheating tank
27: first water level sensor 28: water level controller
29: superheated steam space 30: superheated steam outlet
31: hot water supply pipe 32: hot water supply pump
33: Hot water check valve 34: Feed pump
35: water supply valve 36: second water level sensor
37: overflow valve 38:
39: screw 40: hot water outlet

Claims

In the lower part of the primary combustion chamber and the primary combustion chamber, a secondary combustion chamber for re-burning incomplete combustion gas and unburnt substances generated in the primary combustion and a tertiary combustion chamber and a tertiary combustion chamber for further combustion of combustion gas generated in the secondary combustion chamber And a steam / hot water generating unit for generating steam and hot water by the reheat heat and the reheat combustion reheat mixed with the incomplete combustion gas discharged from the secondary combustion chamber and the waste fuel supply unit, the steam turbine, 1. An environmentally friendly energy generating apparatus using a waste combustion apparatus including a generator,
The steam / hot water generator includes a steam generation tank storing water on the outer wall of the re-combustion chamber and generating steam by the heat of combustion of the combustion furnace, water stored on the outer wall of the steam generation tank, And a second preheating tank for storing water in the outer wall of the first preheating tank and for receiving the hot water of the first preheating tank to warm the water to be supplied,
A water level controller is installed on the steam generating tank at one side thereof and connected to the first water level sensor, and a water level controller is installed at an upper side of the steam generating tank to form a superheated steam space for heating the steam generated by the combustion heat of the combustion furnace, A superheated steam discharge port for supplying superheated steam generated in the superheated steam space to the steam turbine is formed at the other side of the steam generation tank,
The first preheating tank is equipped with a hot water supply pipe for supplying hot water heated by the heat of the steam generating tank to one side of the first preheating tank, a hot water feed pump installed on the upper part of the hot water supply pipe, a connection between the hot water supply pipe and the steam generation tank A hot water check valve is installed in all pipelines,
The second preheating tank is formed by connecting the water supply pump and the water supply valve so that the cold water is heated by the hot water heat of the first preheating tank by receiving the cold water from the outside and the second water level sensor is installed outside the second preheat tank ,
Wherein at least one overflow valve is provided between the primary preheating tank and the secondary preheating tank so that the hot water charged in the secondary preheating tank flows through the overflow valve when the primary preheating tank becomes less than a predetermined level, And the tank is formed so that it can be automatically transferred to the tank.

The method according to claim 1,
Wherein the secondary combustion chamber is formed with a plurality of secondary combustion blocks spaced apart at regular intervals,
The secondary burner block is formed of a heat-resistant steel sheet having a predetermined thickness so as to form a quadrangular cylinder having a hexagonal structure with a narrow width, a long vertical length, and an internal space,
A plurality of air outlets are formed at regular intervals on both side vertical plane plates made of a quadrangular cylinder,
Wherein the air outlet is formed at a pit angle (?) Of 13 ° to 16 ° with respect to a horizontal axis.

delete

The method according to claim 1,
The steam generating tank receives hot water preheated from the first preheating tank only in a lower space corresponding to 2/3 of the steam generating tank so that steam can be generated in a short time by the heat of combustion,
The space in the upper third of the steam generating tank is heated by the combustion heat of the combustion furnace so as to prevent hot water from being filled in the superheated steam space so as to generate superheated steam of high pressure and supply it to the steam turbine,
The hot water of the primary preheating tank drives a hot water feed pump that sucks the hot water of the primary preheating tank according to the first water level sensor signal of the steam generating tank so that steam or hot water of the steam generating tank does not flow back through the hot water check valve Thereby enabling unidirectional conveyance of the waste.