KR20020072250A - Incinerator for waste management - Google Patents

Abstract

PURPOSE: An incinerator for waste disposal is provided to increase the efficiency of combustion, to minimize incomplete combustion and the generation of dioxin, and to work consecutively the incinerator even if a large sized incinerator. CONSTITUTION: An incinerator(10) is composed of a cylindrical combustion chamber(11) installed in a main body thereof. An air chamber(27) arranged in the combustion chamber supplies pressed air from a blower(17) to the combustion chamber. An air-supplying pipe(20) linked to the air chamber and headed toward the center of the incinerator is equipped inside the combustion chamber. Region around the air-supplying pipe forms the center of the combustion chamber. An air-supplying branch pipe installed in one side of a horizontal pipe of the upper and lower of the air-supplying pipe ventilates the constant amount of air in a constant direction. Pressed air delivered from the horizontal pipe and the air supplying branch pipe is circulated inside the combustion chamber. The air supplying branch pipe is crossed horizontally and perpendicularly on a vertical position of the air-supplying pipe and blows air in variable directions.

Description

Incinerator for waste disposal {INCINERATOR FOR WASTE MANAGEMENT}

The present invention generally relates to incinerators for use in waste treatment, and more particularly to incinerators that provide more efficient combustion.

The generation of toxic substances, including dioxins, has become a major problem when industrial and other wastes are incinerated. One of the known incinerators has a main body equipped with an air heating pipe at the top of the combustion chamber and an air supply pipe at the bottom of the combustion chamber. Each air supply pipe is a double structure consisting of an outer water pipe and an inner pipe. In such incinerators, the pressurized air heated in the air heating pipe will be blown out of the air supply pipe and circulate in the combustion chamber when ejected from the air supply branch pipe and the water pipe.

The lower half of the incinerator main body is covered with an air chamber cell casing and an air chamber connected to the combustion chamber by an auxiliary air supply branch pipe protruding from the water jacket. The auxiliary air supply branch pipe is mounted parallel to the height of the incinerator main body. The air blown from the auxiliary air supply pipe supplies more oxygen to the combustion chamber and blows up the ash of the burned waste. If the furnace is small in size, air is simply supplied from the air supply branch pipe to the bottom, furnace wall and furnace center of the furnace bottom and wall air supply branch pipes. However, as the size increases, air does not reach the furnace center of the incinerator, resulting in incomplete combustion due to the lack of oxygen, in particular the air blown from the wall is blocked by the rise of the flame flow generated in the furnace. This results in low combustion efficiency.

Incomplete combustion causing the generation of toxic ash, including dioxins, is an important problem to be solved. In addition, other types of ash such as liquid, sludge, high moisture wastes and solid liquefaction burning require different incinerators.

The incinerator of the present invention provides efficient combustion and minimizes the generation and incomplete combustion of dioxins. This makes it possible to operate continuously even if the incinerator is large.

Therefore, the main object of the present invention is to provide an incinerator for providing more efficient combustion.

According to a first aspect of the invention, there is provided an incinerator for use in waste disposal, which has a combustion chamber located in the incinerator, and at least one air in the combustion chamber that supplies air and / or steam into the combustion chamber and / or Or having a steam supply pipe, each air and / or steam supply pipe is configured with a water pipe, and in various directions to provide air and / or vapor in the chamber to swirl in the combustion chamber to minimize incomplete combustion. And at least one inner pipe mounted inside the water pipe for holding the air and / or steam for blowing into the chamber and a plurality of air or steam supply pipes installed in the air and / or steam supply pipes.

The air supply pipe preferably has an advantageous shape for blowing air into the center of the combustion chamber.

It is also preferred that the feed pipe is configured to have a predetermined protrusion, such as a U, M, E, 1 or C type.

Preferably, the air supply branch pipes are located at the top and bottom of the air supply pipe.

Further, the air supply branch pipes, which are preferably opposed in a pair of opposite directions, may be installed equidistantly spaced along the central vertical portion of the air supply pipe. The alternating pairs may be arranged at right angles to each other. For example, the pair can be oriented in the radial direction and adjacent pair (s) can be oriented in the circumferential direction within the exemplary circular chamber.

Optionally, groups of four air feed branch pipes may be mounted equidistantly spaced along the central vertical portion of the air feed pipe. These groups are disposed to deviate from adjacent groups which are rotationally oriented about 45 ° around the air supply pipe.

Preferably, the air heating pipe is installed at the top of the incinerator so that hot pressurized air can be supplied into the combustion chamber, and the air heating pipe and the combustion chamber are connected with the air supply pipe.

Also preferably, the steam generator is installed at the top of the incinerator so that it is possible to supply steam to the combustion chamber, and the steam generator and the combustion chamber are connected with the air supply pipe.

The details of one or more embodiments of the invention will be described with reference to the accompanying drawings and the following description. Other features, objects, and advantages of the invention will be apparent with reference to the accompanying drawings and claims.

Illustrative embodiments of the invention are shown in the drawings and described in more detail in the following description.

1 is a vertical sectional view of an incinerator in accordance with the principles of the present invention;

FIG. 2 is a horizontal sectional view of the combustion chamber of FIG. 1 taken along line 2-2; FIG.

3 is an enlarged horizontal sectional view of the air supply pipe of the incinerator of FIG. 1;

4 is an enlarged vertical sectional view of the air supply pipe of the incinerator of FIG.

5 shows various alternative forms of air supply pipes.

<Explanation of symbols for main parts of drawing>

10: incinerator

11: combustion chamber

14: water jacket

15: incinerator main body

16: air heating pipe

17: blower

20: air supply pipe

21: inner pipe

23, 24: air supply branch pipe

27: air chamber

29: air chamber cell casing

31: dust removal device

32: port

36: system tank

Referring to the drawings, the incinerator 10 (of FIG. 1) has a water jacket 14 located between the inner or inner wall 12 (of FIG. 4), the outer or outer wall 13, and the inner and outer walls. It comprises a combustion chamber 11 surrounded by. An air heating pipe 16 (in FIG. 1) for heating air from the blower 17 is installed in the upper center of the combustion chamber 11 of the incinerator main body 15. The upper end of the air heating pipe 16 is connected to an outer air supply pipe 18 extending from a blower or another individual blower (not shown). The lower end of the air heating pipe 16 is connected to the end of the hot air supply pipe 19 extending upward along the outer wall of the incinerator main body, and the other end of the hot air supply pipe 19 passes through the air chamber 27. Is connected to the air supply pipe 20 of the combustion chamber 11. According to this embodiment, the air supply pipe is U-shaped. However, other protruding forms as shown in FIG. 5 can also be used to provide air blowing from the pipes towards the center of the combustion chamber.

Each air supply pipe 20 consists of a double. Each air supply pipe 20 includes an external water pipe 22 through which water flows, and both ends of the water pipe are connected to the water jacket 14. The water pipe 22 functions as an outer jacket covering the inner pipe 21 installed concentrically inside the water pipe. Both ends of the inner pipe 21 are connected to the air chamber 27 and also extend through the water pipe to allow air flow out of the inner pipe (as shown in FIGS. 2 to 4) and the air supply branch pipe 23. It is installed together.

The air supply pipe 20 includes one upper and one lower horizontal portion 25 and a vertical portion 26 therebetween. Three air supply branch pipes 23 are installed on one side of the inner pipe 21 in each horizontal section 25 in the air supply pipe (for example, the side facing clockwise when viewed from above). These allow air to be continuously blown around the central axis 500 (eg clockwise when viewed from above). Therefore, the air blown from the air supply branch pipe 23 forms a circulation in the combustion chamber 11 as shown in FIG. Circulated air promotes the combustion of industrial and other wastes.

The air supply branch pipes are staggered horizontally and vertically on the inner pipe 21 of the vertical position 26 of the air supply pipe 20. By way of example, Fig. 4 shows an alternately staggered pair of air supply branch pipes 24. Each pair opposes radially in the radial and peripheral directions alternately around the center of the incinerator. Thus, the air is blown in four directions with a net effect rather than net net directional flow.

In another preferred embodiment (not shown), a group of four air supply branch pipes 24 are horizontally spaced equidistantly along the inner pipe 21 of the vertical portion 26 of each air supply pipe 20. Is installed. Adjacent groups of four air supply branch pipes 24 are staggered about 45 ° about the inner pipe, causing air to be blown in eight directions.

In another preferred embodiment (not shown), a group of eight air supply branch pipes 24 are spaced equidistantly and horizontally along the inner pipe 21 of the vertical portion 26 of each air supply pipe 20. Is installed. More air supply branch pipes 24 are vertically staggered such that air is blown in eight directions, but is typically aligned.

The area enclosed by the air supply pipe 20 forms the center of the combustion chamber 33 which enhances the combustion efficiency and assists in effectively circulating the flames that allow the waste to be easily disposed in the combustion chamber 11. The space of the central region of the combustion chamber 33 is formed in the region where air is blown from the air supply pipe 20, and the air supply branch pipe 24 installed on the vertical position 26 can reach.

The air chamber cell casing 29 (Fig. 1) covers the outer lower half of the incinerator main body 15. The air chamber 27 inside the casing 29 is connected to the combustion chamber 11 by an inner pipe 21 and penetrates the water jacket 14. Pressurized air is supplied to the combustion chamber 11 by air supply branch pipes 23, 24.

The second air chamber cell casing 44 covers the outer lower half of the incinerator main body 15. The air chamber 45 inside the casing 44 is connected to the combustion chamber 11 by an auxiliary air supply branch pipe 30 and passes through the water jacket 14.

The auxiliary air supply branch pipe 30 extends along the main body to the top of the incinerator main body as shown in FIG. The air blown from the auxiliary air supply pipe 30 in the combustion chamber 11 supplies oxygen and blows ash upwards. This results in high combustion efficiency by the complete combustion of the non-combustible gas. The ash blown upwards is collected by the dust removal device 31 installed on the upper part of the incinerator main body 15. Thus, there is no need to manually remove ash from the combustion chamber 11.

Ports for the treatment of industrial and other wastes 32 are mounted on top of the incinerator main body 15 to form the top of the air chamber cell casing 29. Industrial and other waste is constantly supplied through the port 32 by a belt conveyor (not shown) to the combustion chamber 11.

Air can be supplied to the air chamber 27 in the air chamber cell casing 29 by using a blower 17 or other source of compressed air to supply compressed air to the air heating pipe 16. The pressure reducing valve is required during piping to keep the air pressure supplied to the air chamber cell casing 29 below the air pressure supplied to the air heating pipe 16 when the blowers 17 are shared.

1 shows a blower 34 providing compressed air to an air chamber 45 connected to an auxiliary air supply branch pipe 30. A blower 35 for supplying air to the exhaust pipe and for assisting the incineration of the incinerator 10 is shown in FIG. In addition, in Fig. 1, the system tank is shown at 36, the second system tank is shown at 37, the third system tank is shown at 38, and the steam generator is shown at 39. The hot compressed steam is mixed with compressed air and supplied to the combustion chamber 11 to enhance the combustion efficiency. In other words, the steam mixed in the compressed air blown from the air supply pipe 20 enhances the rotation of the flame to enhance the combustion efficiency in the combustion chamber 11. The pump is shown at 40, the safety valve is shown at 41, and a number of supply pipes for supplying steam to the air chamber 27 are shown at 42 and 43.

The operating functions of the incinerator are described below.

Industrial and other wastes are disposed at the bottom of the combustion chamber 11 of the incinerator main body 15. Industrial and other waste supplied to the port 32 is received at the bottom of the combustion chamber 11. Compressed air passing through the dual structure air supply pipe 20 is supplied from the blower 17. Alternatively, the hot compressed air supplied from the air heating pipe 16 installed on the top of the combustion chamber 11 is mixed with the compressed air supplied from the blower 17 so that the mixed air is supplied into the combustion chamber 11. . In addition to the supply system described above, steam supplied from the steam generator 39 installed on the upper side of the incinerator 15 is mixed with compressed air and supplied to the combustion chamber 11. When the mixed air is supplied, the air supplied from the air supply branch pipe 23 installed on the upper and lower horizontal side pipes 23 of the air supply pipe 20 is always blown in a constant direction, so that compressed air and / or The heated compressed air forms a vortex flow and a circulation in the combustion chamber 11 to accelerate combustion.

The double structure air supply pipe protrudes toward the center of the combustion chamber. The hot compressed air is blown from an air supply pipe that generates air flow in a predetermined direction and is blown in all 360 ° directions (ie substantially non-net direction) in the combustion chamber. As a result, air circulation enhances combustion, and air is supplied to all portions of the combustion chamber including the furnace walls and the center to minimize the occurrence of dioxins and incomplete combustion. At the same time, ash does not accumulate and combustion efficiency improves dramatically, allowing the incinerator to operate continuously.

Since the air supply branch pipe is staggered horizontally and vertically on the vertical position of the air supply pipe, the compressed air is blown unidirectionally, and the air is circulated. This helps to supply oxygen to all parts of the combustion chamber and maintains optimum combustion.

Since the compressed air blown from the air supply branch pipes 23 and 24 is heated in the air heating pipe 16 provided on the upper portion of the combustion chamber 11, the temperature in the furnace is not lowered. In addition, the air blown from the air supply branch pipe 23 generates a large circulation of air through the combustion chamber 11, thereby dramatically improving the combustion efficiency.

Steam generated in a steam generator installed on top of the incinerator main body and mixed with compressed air supplied to the combustion chamber increases the combustion efficiency. In other words, the mixture of compressed air and steam blown out of the air supply pipe increases the rotational force of the flame (ie, increased rotation), thereby enhancing combustion in the combustion chamber.

Oxygen is sufficiently supplied to the combustion chamber 11 because the heated compressed air is blown out of the air supply branch pipe 24 staggered vertically and horizontally on the vertical portion 26 of the air supply pipe 20. Although oxygen is often deficient at the center of the combustion chamber in the large, incinerated large incinerator, a large amount of oxygen is supplied to the center of the combustion chamber of the existing incinerator because the feed pipe is installed projecting inwardly towards the center of the combustion chamber. . As a result, the combustion temperature rises and the combustion efficiency increases, increasing the combustion capacity and reducing the occurrence of dioxins and incomplete combustion.

The residue generated by the combustion is blown upward from the bottom of the incinerator when the compressed air blown from the air supply pipe 20 is circulated. The ash is blown upward and collected in the dust removal device 31. As a result, the ash does not need to be removed manually from the combustion chamber. It only needs to collect materials that cannot be burned. Therefore, the incinerator is suitable for use in long continuous operation.

In addition, the built-in device can store the fluid inside the combustion chamber, whereby the incinerator can handle various shapes of waste.

In the air supply pipe 20, the inner pipe 21 is protected by a water pipe 22. Water flowing inside the water pipe protects the water pipe from extreme temperature rises and helps prevent heat loss. Thus, the pipe is not damaged by the impact of supplying industrial and other wastes.

In the operating function of the present invention, combustion treatment of industrial and other wastes has been described. However, the present invention is not limited to industrial and other wastes but can be applied to any combustible waste.

The liquid waste may be pumped into the steam generator at the top of the incinerator main body or with one of the water jackets inside the incinerator main body.

5 shows various alternative shapes of the air supply pipe and also alternative angles of the projections of the branch supply pipe.

The vessel 46 with a water jacket installed in the combustion chamber may be a burning liquid, sludge, colloid, powdered waste and solid liquefaction incinerator at high temperatures.

While the preferred embodiments of the invention and their advantages have been described in the foregoing detailed description, the invention is not limited thereto but only by the spirit and scope of the appended claims.

The present invention provides an efficient incineration, minimizes the generation and incomplete combustion of dioxins, and can provide an incinerator that can be continuously operated even in large sizes.

Claims (19)

An incinerator for use in waste management, comprising: a combustion chamber located therein and having at least one air and / or vapor supply pipe therein for supplying air and / or steam therein, each air and / or The steam supply pipe is comprised of a water pipe and one or more inner pipes mounted inside the water pipe and continue to supply air and / or steam into the chamber in various directions to swirl the air and / or steam into the chamber in the combustion chamber. Incinerator, characterized in that a plurality of air or steam supply pipes are installed to minimize the incomplete combustion to blow. The incinerator of claim 1, wherein the air supply pipe protrudes from the wall of the air chamber into the combustion chamber. An incinerator as set forth in claim 1 wherein said air supply pipe extends from the ceiling to the bottom of the combustion chamber. The incinerator according to any one of claims 1 to 3, wherein the air supply pipe has a shape that is easy to supply air to the center of the combustion chamber. The incinerator of claim 1, wherein an air supply branch pipe is installed on one side of the air supply pipe. 2. The incinerator of claim 1, wherein an air supply branch pipe is located above and below the air supply pipe to not only keep the air discharged but also to help it circulate in the combustion chamber. 2. The incinerator of claim 1, wherein the air supply pipe pairs are spaced apart on air supply pipes that are staggered at right angles to adjacent pairs that cause air to blow in four directions in the combustion chamber. 2. The incinerator of claim 1, wherein the combustion chamber is surrounded by an inner wall and an outer wall with a water jacket positioned between the inner wall and the outer wall. An air heating pipe is installed on an incinerator to supply hot compressed air into the combustion chamber, wherein the air heating pipe and the combustion chamber are linked to an air supply pipe oriented towards the center of the combustion chamber. Incinerator. 2. The incinerator of claim 1, wherein the air in the combustion chamber is turbulent as compressed air is blown out of the branch supply pipe. The incinerator of claim 1, wherein the air supply branch pipe is located inside the inner pipe passing through the water pipe. The incinerator of claim 1, wherein the incinerator has a cylindrical shape. In an incinerator for use in waste disposal, A combustion chamber 11 surrounded by an inner wall 12 and having a central longitudinal axis 500, Each comprising a plurality of air supply pipe units 20 having a central longitudinal extension 26 in the chamber and first and second portions 25 extending from the central portion 26 to the wall 12, The plurality of air supply pipes having an outlet into which air is introduced into the combustion chamber in a net circulation about a central longitudinal axis to effectively enhance combustion in the chamber. 11. The outlet of claim 10 wherein the outlet comprises a plurality of first outlets on at least an end of an air supply pipe unit that effectively provides the circulation, and a plurality of second outlets along a longitudinal extension without net circulation about a central longitudinal axis. Incinerator comprising a. 12. The air supply pipe according to claim 11, wherein each air supply pipe unit comprises an inner pipe (21) and an outer pipe (22), the first outlet being defined by a first branch pipe (23) Incinerator, characterized in that formed by a second branch pipe (24) extending between the pipe and the outer pipe. 11. The air supply pipe unit according to claim 10, wherein the air supply pipe unit comprises an outer pipe (22) and an inner pipe (21) having a space for transporting cooling water therebetween, the outlet extending from the inner pipe and coalesced outside. An incinerator formed by the terminal portions of branch pipes (23, 24) passing through the pipe. The incinerator according to claim 13, wherein the space for transporting water is in communication with the outer shell water jacket (14) of the wall (12) and the inner pipe is in communication with an air chamber (27) surrounding the water jacket. . 11. The method according to claim 10, characterized in that there are four air supply pipe units (20) spaced 90 ° about the chamber, said longitudinal extension being inside of the inner wall (12) so as to burn effectively through the chamber. incinerator. The incinerator of claim 13, wherein the air supply pipe is U, M, E, I or C shaped.