JP2005069674A - High pressure air swiveling gasification burner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect a burner, which is brought into contact with a sludge-like waste with high temperature gas to dry, pulverize and vaporize the waste, from raising its temperature, and also extend the lifetime of the burner. <P>SOLUTION: A part of a housing 110 of the gasification burner 100 is cooled using the high pressure air swiveling gasification burner 100, while the contact of flames with an inner surface of a combustion chamber 120 is minimized. The combustion chamber 120 formed in the housing 110 has, on its one side, a fuel supply tube 130, to which a jet nozzle is attached, and a combustion air supply tube 140. The burner comprises an air chamber part 10 attached to an outside surface on one end of the housing 110 to which the fuel supply tube 130 and combustion air supply tube 140 are attached and having an air supply passage 14 formed in a double overlapping manner by a partition wall, and an air vortex part 20 constituted of multiple air jetting tubes 22 attached, on an outer peripheral edge of the combustion chamber 120 where the jet nozzle 132 is positioned, in a slanted manner to be connected to the air supply passage 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a high-pressure air swirl gasification burner, and more particularly, to cool a part of the gasification burner housing and at the same time minimize the contact of the flame with the inner surface of the combustion chamber. The present invention relates to a high-pressure air swirling gasification burner that extends the life of the gas.

  In general, aqueous waste such as sewage sludge and food and drink waste contains a considerable amount of water, so contact with wastewater treatment agent or activated sludge, sedimentation concentration, mechanical After going through multiple stages such as dehydration or heat dehydration, the dehydrated sludge has a moisture content of 70-90% and then incinerated again, landfilled on land or sea surface, or drained into rivers or sea The method of processing is then used.

  However, the method of incineration as described above requires not only a specially manufactured separate incinerator, but also the dehydrated sludge, which is an incineration product, still has a high water content, so that fuel for incineration is used. Not only is consumed considerably, but also has the problem that a large amount of ash remaining after incineration must be treated separately.

  In addition, the land and sea surface landfill method has a problem in that during the treatment process, the added additive does not cause bacteria to act in the soil or seawater, and the corrosion by bacteria does not proceed. The method of draining water is prohibited by law because rivers and seas are polluted by drained dewatered sludge and directly connected to environmental pollution.

  Therefore, as one of the methods for more efficiently treating the aqueous waste that generates a considerable amount every day, recently, the above-mentioned aqueous waste such as sewage, manure, domestic wastewater or industrial wastewater is primary. After dehydration treatment, concentrated sludge or sludge is generated into the intended sludge waste, and it is smokeless and odorless without burning it. A method for separating into dry solid components has been proposed.

  In this way, in order to vaporize the sludge waste containing 70-90% moisture within a short time without smoke and odor, the high-pressure and high heat instantaneously contact with the sludge waste. One of the devices used to vaporize the sludge waste is a gasification burner.

  In the conventional gasification burner, a fuel supply pipe, a combustion air supply pipe, a spark plug, and a temperature detection sensor, each having an injection nozzle, are installed on one side of the combustion chamber inside the housing. After burning at 1500 ° C., high temperature heat is discharged to the other side of the combustion chamber, while it is instantaneously brought into contact with the supplied sludge waste, and vaporized while being dried and pulverized.

  However, in the conventional gasification burner as described above, since the combustion is performed at a considerably high temperature in the combustion chamber, a great defect has occurred in the cooling device for cooling the combustion.

  To reiterate, the conventional gasification burner employs a large air-cooled and water-cooled cooling system, but in the former case, a jacket-shaped air chamber is installed outside the combustion chamber. In such a cooling device, the flame is brought into contact with the inner surface of the housing of the combustion chamber, so that the temperature difference between the outer surfaces of the air chambers installed on the inner surface and the outer surface of the combustion chamber is so severe that the air chamber is Since the welded part for forming is frequently damaged, not only smooth cooling is not performed, but there is a problem that it becomes difficult to use a gasified bar bar after all.

  Also, in the latter case, not only is it inappropriate to cool a considerably high temperature of about 1100 to 1500 degrees with water, but there is also a risk of explosion if the water pressure rapidly rises due to heating in the circulation path. Therefore, it has a problem that it must be designed to withstand high pressure.

  Therefore, the present invention has been devised to solve the above-mentioned conventional problems, and its purpose is to cool a part of the housing of the gasification burner, and at the same time, the flame is the inner surface of the combustion chamber. To minimize heat conduction to the housing.

  Another object of the present invention is to minimize the release of heat in the combustion chamber to the outside.

  Another object of the present invention is to supply combustion air by combustion more efficiently.

  Another object of the present invention is to more efficiently supply the more combustion air required for combustion.

  Another object of the present invention is to supply combustion air and vortex air through a single supply path.

  Another object of the present invention is to allow an operator to directly see through the combustion chamber.

  Another object of the present invention is to make it possible to check the inside of the combustion chamber via a display device or the like.

  In order to achieve the above object, the present invention provides a fuel supply pipe, a combustion air supply pipe, a spark plug, and a temperature detection sensor, each having an injection nozzle attached to one side of a combustion chamber formed inside the housing. An air chamber portion formed on an outer surface of one end of a housing to which the fuel supply pipe and the combustion air supply pipe are attached, and having an air supply path doubled by a partition; An air vortex section composed of a number of air ejection pipes mounted on the outer peripheral edge of the combustion chamber at which the injection nozzle is located so as to be connected to the air supply path; Features.

  An inner surface of the combustion chamber is formed of a refractory material.

  A swirl jet portion having a large number of swirl plates inclined in the same direction as the air jet tube is provided inside the end portion of the combustion air supply pipe.

  An auxiliary combustion air supply pipe is provided outside the combustion air supply pipe.

  A second swirl jet portion having a large number of swirl plates inclined in the same direction as the air jet tube is provided on the inner side surface of the end portion of the auxiliary combustion air supply pipe.

  The auxiliary combustion air supply pipe is connected to an air supply path of the air chamber portion through an air supply pipe.

  A see-through tube with a see-through member is attached to a housing to which the combustion air supply tube is attached.

  A see-through member is attached to a housing to which the combustion air supply pipe is attached, and a projection part to which a camera is attached is provided outside.

  As described above, the present invention reduces the temperature of the combustion chamber primarily through the air chamber portion and the vortex flow jet portion, and minimizes the contact of the flame with the inner surface of the combustion chamber. Therefore, it is possible to minimize the heat loss and to be usefully used for a longer period of time.

  In addition, by supplying combustion air more efficiently through the vortex jetting part, it is possible to increase the combustion efficiency and at the same time minimize the spread of the flame.

  In addition, since more combustion air can be supplied via the auxiliary combustion air supply pipe, the combustion efficiency can be further increased and the spread of the flame can be minimized.

  In addition, air can be smoothly supplied to the air vortex section and the auxiliary combustion air supply pipe via one air supply path, and air can be supplied efficiently with a simpler structure.

  In addition, since the operator can directly observe the combustion chamber in the field, the combustion state can be directly confirmed.

  In addition, since the inside of the combustion chamber can be confirmed at a place other than the site via the display device or the like, the combustion state can be easily and conveniently confirmed at any time.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic vertical sectional view showing a main part of the present invention, and FIG. 2 is a schematic plan view of the main part shown in FIG.

  As shown in the figure, the gasification burner 100 according to the present invention burns fuel at about 1100 to 1500 degrees in the combustion chamber, and then the high heat discharged to the other side of the combustion chamber at 70 to 90 moisture. The fuel is injected into one side of the combustion chamber 120 in the housing 110 so that the sludge waste can be vaporized while being dried and pulverized. A fuel supply pipe 130 equipped with an injection nozzle 132, a combustion air supply pipe 140 for supplying secondary air required for combustion, a spark plug 150 for igniting fuel injected from the injection nozzle, and the And a temperature sensor (not shown) that controls whether or not the combustion proceeds depending on the temperature of the combustion chamber.

When the gasification burner of the present invention is preheated by partially absorbing high heat transmitted to the housing of the combustion chamber on the outer surface of one end of the housing 110 to which the fuel supply pipe 130 and the combustion air supply pipe 140 are mounted. At the same time, 10 parts of an air chamber formed with an air supply path 14 doubled by the partition wall 12 so as to reduce the temperature of the housing;
A number of air ejection pipes 22 are mounted on the outer peripheral edge of the combustion chamber where the injection nozzle is located so as to be connected to the air supply path, and eject air in a vortex-like vortex form. And an air vortex portion 20 formed.

  Accordingly, the air jetted from the air jet pipe of the air vortex section envelops the flame of the fuel burned in the combustion chamber of the housing, so that the flame is formed long in the center of the combustion chamber.

  In addition, the air jetted into the vortex form in the air vortex section is preheated primarily in the air supply path, thereby causing insufficient combustion together with the secondary combustion air supplied through the combustion air supply pipe. It can also serve to replenish air.

  As described above, the air in the form of vortex that is ejected from the air ejection pipe of the air vortex section encloses the flame in the combustion chamber, so that the flame is gathered in a long form at the center without being close to the inner surface of the housing. The heat transfer to the housing is minimized and can be used for longer periods of time by minimizing housing breakage.

  On the other hand, since the inner surface of the combustion chamber 120 is formed of a refractory material 120A such as ceramic that slowly conducts heat, the air vortex portion primarily prevents heat conduction to the housing, and the refractory material is 2 Next, heat conduction to the housing is prevented, so that the durability of the housing can be improved, and at the same time, the heat of the combustion chamber can be minimized.

  FIG. 3 is a main part view showing another embodiment of the combustion air supply pipe of FIG.

  As shown in the drawing, a large number of slanting members are inclined in the same direction as the air ejection pipe inside the end of the combustion air supply pipe 140 for supplying secondary air necessary for combustion in the combustion chamber in the housing. The eddy current ejection part 30 equipped with the eddy current plate 32 is provided.

  Therefore, the combustion air is supplied in a vortex form such as a vortex by the vortex plate of the vortex ejection portion, so that the combustion air and the fuel injected from the injection nozzle are mixed more smoothly, increasing the combustion efficiency, In addition, a flame is formed at the exact center of the combustion chamber.

  As a result, the combustion efficiency is improved, and at the same time, the flame is also concentrated in the center, and the high temperature due to the flame can be further minimized from being transmitted to the outside of the combustion chamber.

  FIG. 4 is a main part diagram showing still another embodiment of the present invention, and FIG. 5 is a main part diagram showing a second vortex jetting part of the auxiliary combustion air supply pipe of FIG.

  As shown in the drawing, an auxiliary combustion air supply pipe 40 is provided outside the combustion air supply pipe 140.

  Accordingly, the secondary combustion air necessary for combustion can be supplied through the combustion air supply pipe, and at the same time, a large amount of secondary combustion air can be sufficiently supplied through the auxiliary combustion air supply pipe. Smooth combustion will be achieved.

  In addition, since the second eddy current jet part 45 to which a large number of vortex plates 42 are inclined in the same direction as the air jet pipe is provided inside the end of the auxiliary combustion air supply pipe 40, the combustion air Similar to the vortex jets formed in the supply pipe, by supplying air in a vortex-like vortex form, the flame does not spread and gathers further in the center of the combustion chamber.

  On the other hand, when the auxiliary combustion air supply pipe 40 is connected to the air supply passage 14 of the air chamber portion via the air supply pipe 48, a separate air is not supplied to the auxiliary combustion air supply pipe. The preheated air can be supplied to the air vortex section and the auxiliary combustion air supply pipe through the supply path, so that the air can be supplied more efficiently.

  FIG. 6A is a main part view showing still another embodiment of the present invention, and FIG. 6B is a vertical cross-sectional view of the main part of FIG.

  As shown in the figure, a see-through tube 50 equipped with a known see-through member 52 such as tempered glass is attached to one side of the housing 110 to which the combustion air supply tube 140 is attached.

  Therefore, the operator can directly confirm the combustion state made in the combustion chamber with the naked eye at the site.

  FIG. 7A is a principal part view showing still another embodiment of the present invention, and FIG. 7B is a longitudinal sectional view of the principal part of FIG.

  As shown in the figure, a see-through member 62 such as a normal tempered glass is attached to one side of the housing 110 to which the combustion air supply pipe 140 is attached, and the inside of the combustion chamber is known such as a computer or a monitor. The projection unit 60 to which the camera 64 is attached is provided so that it can be confirmed via the display device.

  Therefore, the inside of the combustion chamber can be easily and conveniently confirmed not at the site but also at a separate location.

It is the rough principal part longitudinal cross-sectional view which showed this invention. It is a schematic principal part top view of FIG. FIG. 5 is a main part view showing another embodiment of the combustion air supply pipe of FIG. 1. It is the principal part figure which showed another Example of this invention. It is the principal part figure which showed the 2nd eddy current ejection part of the auxiliary combustion air supply pipe | tube of FIG. (A) is the principal part figure which showed another Example of this invention, (b) is the principal part longitudinal cross-sectional view of (a). (A) is the principal part figure which showed another Example of this invention, (b) is the principal part longitudinal cross-sectional view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air chamber part 12 Partition 14 Air supply path 20 Air vortex part 22 Air ejection pipe 30 Eddy current ejection part 32, 42 Eddy current plate 40 Auxiliary combustion air supply pipe 45 2nd eddy current ejection part 50 Perspective tube 52, 62 Perspective member 60 Projection part 64 Camera 100 Gasification burner 110 Housing 120 Combustion chamber 120A Refractory material 130 Fuel supply pipe 140 Combustion air supply pipe

Claims (8)

In a gasification burner in which a fuel supply pipe and a combustion air supply pipe, an ignition plug, and a temperature detection sensor, each having an injection nozzle, are mounted on one side of a combustion chamber formed inside the housing,
An air chamber portion 10 having an air supply passage 14 formed on the outer surface of one end of the housing 110 to which the fuel supply pipe 130 and the combustion air supply pipe 140 are attached, and doubled by the partition wall 12;
An air vortex section 20 composed of a number of air jet pipes 22 mounted at an angle so as to be connected to the air supply path, on the outer peripheral edge of the combustion chamber 120 where the injection nozzle is located; A high-pressure air swirl type gasification burner characterized by   The high pressure air swirl type gasification burner according to claim 1, wherein an inner surface of the combustion chamber (120) is formed of a refractory material (120A).   The swirl jet part 30 to which a large number of swirl plates 32 attached to the inside of the end part of the combustion air supply pipe 140 are inclined in the same direction as the air jet pipe is provided. A high-pressure air swirling gasification burner according to item 1.   The high-pressure air swirl type gasification burner according to claim 1, wherein an auxiliary combustion air supply pipe is provided outside the combustion air supply pipe.   A second eddy current jet part 45 having a large number of vortex plates 42 inclined in the same direction as the air jet pipe is provided on the inner side surface of the end of the auxiliary combustion air supply pipe 40. A high-pressure air swirling gasification burner according to claim 4.   The high-pressure air swirl according to claim 4 or 5, wherein the auxiliary combustion air supply pipe 40 is connected to an air supply path of the air chamber portion through an air supply pipe 48. Gasification burner.   The high-pressure air swirl type gasification burner according to claim 1, wherein a see-through tube (50) attached with a see-through member (52) is attached to a housing (110) to which the combustion air supply pipe (140) is attached. .   The first aspect or claim 1, wherein the see-through member 62 is attached to the housing 110 to which the combustion air supply pipe 140 is attached, and the projection unit 60 to which the camera 64 is attached is provided outside. The high-pressure air swirling gasification burner according to item 7.

Images