KR100432089B1 - buring boiler for refuse derived fuel - Google Patents

Abstract

The present invention utilizes the generator as its power source by driving the generator using high pressure steam generated from waste heat boiler using waste heat generated by combustion of solid fuel having high calorific value by sorting, crushing, compressing and chemically treating combustible waste. It is installed on the bottom of the furnace and installed in the bottom of the furnace and the cooling pipe equipped with an air nozzle to easily discharge the incineration residues, and the outside of the furnace to prevent overcooling and overheating. Cooling medium surrounding the air nozzle portion protruding to the air nozzle and the refractory brick for supplying air, and rotatably installed on the lower side by the drive means, by stirring and moving the incineration injected into the furnace by the wing portion At least one air supply passage formed to blow external air into the loaded incineration Provides a temperature correction unit that allows to maintain a half bless and internal temperature of the stirred is formed on bless optimally.

For this reason, the stirring operation for mixing the incinerators in the furnace up and down and the transfer operation for moving from the front to the rear are simultaneously performed to maximize the combustion efficiency of the solid fuel, and are provided in the stirring and conveying device for stirring and moving the incinerators. It is easy to compensate the temperature inside the furnace by the cooling medium, and supplies the external air to the incineration through the air supply passage formed on the shaft and wing of the stirring and conveying device, and maintains the optimum combustion atmosphere and burns the solid fuel. It is possible to minimize the maintenance cost by driving the generator using its high-pressure steam generated from the waste heat boiler using waste heat generated at the time.

Description

Incineration boiler for solid fuel {buring boiler for refuse derived fuel}

The present invention is the high pressure generated from the waste heat boiler using waste heat generated when burning the fuel (refuse derived fuel) having a high calorific value (4,000 ~ 6,500㎉ / kg) by sorting, crushing, compacting and chemical treatment of flammable waste The present invention relates to an incineration boiler for solid fuel that uses a steam generator to drive a generator to be used as its own power source.

More specifically, in order to increase the combustion efficiency of solid fuel, the temperature inside the furnace is easily corrected by the cooling medium provided in the stirring and conveying apparatus used to stir and move the incinerators in the furnace. The present invention relates to an incineration boiler for solid fuel, which can maintain efficiency and minimize the emission of harmful exhaust gas.

Incineration boilers used in the prior art are considered to be used for house greenhouse heating, industrial production heat and diffused heat, considering only the use of waste heat, resulting in air pollution, and in conventional incinerator boilers, the life of refractory due to excess heat storage. Due to the excessive need for shortening and excessive air, the incineration air ratio is not balanced, resulting in air pollution due to the exhaust gas discharged due to the imbalance of combustion, and it is not possible to easily control the high temperature in the furnace. Since water must be opened to open the inlet, temperature control in the furnace is not easy.

In water-cooled incineration boilers, it is difficult to compensate the temperature in the furnace due to supercooling, and invisible exhaust gas is emitted to the atmosphere, and incinerators with high calorific value can be easily burned, while the temperature in the furnace does not rise to a predetermined temperature. It does not have the problem that the harmful gas is discharged in the state that does not decompose.

Accordingly, an object of the present invention is to incinerate the solid fuel incinerator boiler to maximize the combustion efficiency of the solid fuel by simultaneously performing the stirring operation for mixing the incinerator in the furnace up and down and the transfer operation for moving from the front to the rear To provide.

Another object of the present invention is easy to temperature correction in the furnace by the cooling medium provided in the stirring and conveying device for stirring and moving the incineration, and through the air supply passage formed on the shaft and the blade of the stirring and conveying device It is to provide an incineration boiler for solid fuel that can maintain an optimum combustion atmosphere by supplying external air to the incinerator.

Still another object of the present invention is to use a high-pressure steam generated from the waste heat boiler using the waste heat generated during the combustion of the solid fuel to drive the generator as its own power source to minimize the maintenance and maintenance costs It is to provide an incineration boiler for fuel.

1 is a schematic external view of an incineration boiler for solid fuel according to the present invention;

Figure 2 is a schematic diagram of the stirring feed shaft in the incinerator boiler for solid fuel according to the present invention,

3 is a schematic sectional view of an incineration boiler for solid fuel according to the present invention;

4 is a schematic view of a wall of an incinerator boiler for solid fuel according to the present invention;

5 is a schematic diagram of the stirring feed shaft and the incineration ash conveying conveyor in the incinerator boiler for solid fuel according to the present invention.

* Explanation of symbols used in the main part of the drawing

One; Casing

2; Insulation brick

3; Firebrick

4,6,11; Air nozzle

5; Cooling tube

8; Wing

9; Air supply passage

10; Agitation feed shaft

12; Cooling medium

The above object of the present invention is to provide a casing and a solid fuel type incineration boiler which is formed on the inner surface of the casing to form a wall with a thermal insulation brick and a firebrick so as to maintain a constant temperature in the furnace, the bottom surface of the furnace. Cooling pipes equipped with air nozzles for easy discharge of incineration residues, and air nozzles and refractory bricks for supplying outside air to prevent overcooling and overheating of the inside of the furnace. Cooling medium that surrounds the air nozzle portion protruding from the air, and rotatably installed on the lower side of the furnace by the driving means, stirring and moving the incineration material introduced into the furnace by the wing portion and blows the outside air into the loaded incineration object At least one stirring feed shaft with an air supply passage formed therein, and formed in the stirring feed shaft to optimize the temperature inside the furnace. A boiler for burning solid fuels, characterized in that it comprises a temperature compensation means is achieved by providing a so can stop.

According to a preferred embodiment, the temperature correction means includes an air nozzle formed to communicate with an air supply passage in a blade portion of the stirring feed shaft, a first cooling medium filled around an air nozzle formed in the wing portion, and a circumferential direction in the stirring feed shaft. And a second cooling medium filled with.

According to a preferred embodiment, it is formed in the connection pipe between the incineration boiler and the waste heat boiler, at least one of zoite, diatomaceous earth, talc, feldspar to remove the exhaust gas by catalytic reaction upon contact with the high temperature heat discharged from the incineration boiler. A catalyst brick is formed.

According to a preferred embodiment, the steam generator is installed in the incineration boiler or the waste heat boiler and generates a high-pressure steam to drive the generator so that it can be used as its power source.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art to which the present invention pertains, and thus the present invention It does not mean that the technical spirit and scope of the company is limited.

As shown in Figures 1 to 5, the casing (1) surrounding the outside as a metal material and the wall of the furnace is formed on the inner surface of the casing (1) to be insulated from the outside and installed so as to maintain a constant temperature inside the furnace Insulating bricks (2) and refractory bricks (3), cooling pipes (5) equipped with air nozzles (4), which are seated on the bottom of the furnace and can easily discharge incineration residues, and the bottom and walls of the furnace. Cooling consisting of water or heat medium, respectively installed in the air nozzles 6 and the air nozzles 6 protruding from the refractory brick 3 to supply the outside air to prevent the supercooling and overheating of the furnace. It is rotatably installed on the lower side of the furnace by the medium 12 and the driving means. The incineration material introduced into the furnace is stirred and moved by the wing unit 8 and blows external air into the loaded incinerator. Air supply passageway (9) is long At least one stirring feed shaft (10; for example, four are installed) formed in the center of the incense, and the temperature correction means is formed on the stirring feed shaft 10 to maintain the temperature inside the furnace optimally.

At this time, the air nozzle 11 formed to communicate with the air supply passage 9 in the wing portion 8 of the stirring feed shaft 10 as the temperature correction means, and the air nozzle 11 formed in the wing portion 8 A cooling medium 13 filled in the circumference and a cooling medium 14 circumferentially filled in the stirring feed shaft 10 are provided.

In addition, it is formed in the connecting pipe between the incineration boiler and the waste heat boiler, and the catalyst brick formed of any one of zoite, diatomaceous earth, talc, and feldspar to remove the exhaust gas due to the catalytic reaction upon contact with the high temperature heat discharged from the incineration boiler. It is installed in an incineration boiler or a waste heat boiler, and is provided with a steam generator for driving the generator to generate high pressure steam and use it as its power source.

Reference numeral 20 is a rotary joint that receives power from a drive motor (not shown) to drive the stirring feed shaft 10, 21 is driven by interlocking several stirring feed shafts 10. To drive gears, 22 is a bearing for rotatably supporting the stirring feed shaft (10), 23 is a sealing unit (sealing unit) to seal and insulate the gap between the stirring feed shaft and the furnace, 24 is a ash for conveying the ashes burned It is a transport conveyor.

Hereinafter, a method of using the incineration boiler for solid fuel according to the present invention will be described according to the accompanying drawings.

As shown in FIGS. 2 and 3, power is transmitted through the above-described rotary joint 20 due to the driving motor not shown, and several stirring feed shafts 10 are driven by driving the drive gear 21. As the incineration material is rotated, the incineration material is moved from the front to the rear as the wing part 8 of the several stirring transport shafts 10 interlocks as the incineration material is introduced into the furnace. Can be incinerated while.

At this time, as shown in Fig. 1 and 3, incineration according to the external air supplied from the outside through the air nozzle 4 of the cooling pipe 5 installed in the longitudinal direction by maintaining a predetermined interval on the furnace bottom surface The residue can be easily discharged from front to back.

On the other hand, as shown in Figures 3 and 4, it is possible to prevent the supercooling and overheating of the inside of the furnace during incineration to maintain a constant temperature inside the furnace. That is, the air nozzle 6 and the air nozzle 6 protruding from the refractory brick 3 are installed while maintaining a predetermined distance between the insulating brick 2 and the refractory brick 3 forming the bottom of the furnace and the wall. It is possible to easily adjust the temperature correction in the furnace by the cooling medium 12 such as wrapping water or a heating medium.

This prevents excessive heat storage in the furnace, thereby preventing shortening of the life of the refractory brick 3, and incineration air ratio is broken due to excessive need of air during combustion, and harmful gas is discharged due to unbalance of combustion. It is possible to prevent the invisible gas from being released into the atmosphere without being completely decomposed due to the supercooling in the furnace.

At the same time, by the wing portion 8 of the stirring feed shaft 10 described above, the incineration material is inverted in the up and down direction during combustion, and the work of moving from the front to the back of the furnace is performed at the same time. 10) incineration material in which the outside air is trapped by the air supply passage 9 formed in the axial direction and the air nozzle 11 formed in the wing portion 8 radially installed on the outer periphery of the stirring feed shaft 10 so as to communicate with the air supply passage 9 formed in the axial direction. It is possible to maximize the combustion efficiency by blowing into the feed.

On the other hand, as shown in Figure 2, by the high-compression treatment of combustible waste in the general and industrial waste by a few stirring feed shaft (10) rotatably installed in the furnace in the case of burning solid fuel of high calorific value Internal temperature compensation can be easily processed.

That is, the air nozzle 11 formed in the wing portion 8 so as to be in communication with the cooling medium 14 filled in the annular space formed in the circumferential direction in the aforementioned stirring feed shaft 10 and the air supply passage 9 described above. The temperature compensation inside the furnace is easily controlled by the cooling medium 13 surrounding the part, and thus has an optimum combustion efficiency.

On the other hand, the exhaust gas due to the catalytic reaction generated when contacted with the high temperature heat discharged from the incineration boiler by the catalyst brick formed of any one of the crude light, diatomaceous earth, talc and feldspar formed in the connecting pipe between the incineration boiler and the waste heat boiler inlet. It can be removed.

As mentioned above, according to a preferable embodiment, it has the following advantages.

In order to increase the combustion efficiency of the solid fuel, it is possible to maximize the combustion efficiency by simultaneously performing the stirring operation for mixing the incinerator inside the furnace up and down and the transfer operation for moving from the front to the rear.

In addition, the cooling medium provided in the stirring and conveying device for stirring and moving the incineration is easy to adjust the temperature inside the furnace, and the outside air to the incineration through the air supply passage formed on the shaft and the wing of the stirring and conveying device. By supplying the optimum combustion atmosphere can be maintained.

In addition, by using the high-pressure steam generated from the waste heat boiler using the waste heat generated during the combustion of the solid fuel to drive the generator as its own power source it can minimize the maintenance cost.

Claims (4)

In a solid fuel type incineration boiler which is formed on the casing and on the inner side of the casing to form a wall with a thermal insulation brick and a firebrick to maintain a constant temperature in the furnace: A cooling pipe 5 seated on the bottom surface of the furnace and provided with an air nozzle 4 so as to easily discharge the incineration residues; Installed on the bottom and wall of the furnace, respectively, cooling to surround the air nozzle (6) for supplying the outside air and the air nozzle (6) protruding to the refractory brick (3) to prevent overcooling and overheating of the inside of the furnace Medium 12; The air supply passage is rotatably installed on the lower side of the furnace by the driving means to stir and move the incinerated material introduced into the furnace by the wing part 8 and to blow external air into the loaded incinerated material ( 9) at least one stirring feed shaft 10 is formed; And An air nozzle 11 formed on the wing portion 8 of the stirring feed shaft 10 and an air nozzle 11 formed on the wing portion 8 so as to communicate with the air supply passage 9; An incineration boiler for solid fuel, comprising: a cooling medium (13) and a temperature correction means comprising a second cooling medium (14) circumferentially filled in the stirring feed shaft (10). delete delete delete