CN212081223U

CN212081223U - Alcohol-based fuel heat storage type catalytic combustion liner and low-nitrogen heat source device formed by same

Info

Publication number: CN212081223U
Application number: CN202020755449.XU
Authority: CN
Inventors: 廖滨
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-04
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to an alcohol group fuel heat-retaining formula catalytic combustion inner bag, including the inner bag container wall, the upper portion of inner bag container wall is equipped with the exhaust port, the lower part of inner bag container wall is equipped with the bocca, the inside of inner bag container wall is equipped with the heat-retaining inside lining, the inside high temperature combustion chamber that forms of heat-retaining inside lining, be equipped with heat conduction adjustment layer between the inner wall of inner bag container wall and the heat-retaining inside lining, the inside of inner bag container wall still is equipped with honeycomb catalytic combustion board, honeycomb catalytic combustion board separates the high temperature combustion chamber in with the heat-retaining inside lining into wind regulation burning zone and peroxide burning zone two parts, for the heating chamber between the inside heat-retaining inside lining of inner bag container wall and the exhaust port, the heating intracavity is equipped with the heating pipe that keeps. The utility model discloses can accomplish the vaporization burning of a part of fuel and the "chemical reaction after-combustion" of another part of fuel together, obtain more ideal result in concrete practice.

Description

Alcohol-based fuel heat storage type catalytic combustion liner and low-nitrogen heat source device formed by same

Technical Field

The utility model belongs to the technical field of energy-concerving and environment-protective and clean heat source, a alcohol group fuel heat-retaining formula catalytic combustion inner bag and low nitrogen heat source device that constitutes thereof is related to.

Background

The alcohol-based fuel represented by methanol has wide sources, is a byproduct in the production process of a plurality of chemical products, and a plurality of low-quality coals such as lignite and the like and biological straws can be used as the production raw materials of the methanol, so the alcohol-based fuel has wide sources and simple production process, and has relatively low market price. The methanol molecule contains carbon, hydrogen and oxygen elements, only generates carbon dioxide and water after combustion, has no dust and sulfur oxide, can realize low-nitrogen combustion, is a clean petrochemical fuel, is an ideal substitute for coal fuel and part of oil fuel with relatively low cost and capable of realizing large-scale production and use, and has good application prospect.

The existing combustion method of alcohol-based fuel can be simply divided into three types, namely atomizing combustion, gasification combustion and chemical reaction post-combustion (such as methanol cracking). The atomization combustion is that the alcohol-based solution is sprayed out of a nozzle under the action of pressure to form liquid mist with a certain particle size, and the liquid mist is ignited by electric arc and then combusted. The gasification combustion which is further developed than the atomization combustion is that the alcohol-based fuel is continuously heated to be above the boiling point to form gas-phase fuel to be combusted, and the gas-phase fuel has smaller particle size, so that larger surface area and more sufficient reaction combustion with oxygen can be obtained, and the gasification combustion is better than the atomization combustion. The two methods both need a fan to supply air directly and need to be fully mixed with air, but have the problems of uneven mixing, low temperature of a combustion area, unstable combustion temperature, incomplete combustion, poor combustion state and the like.

The chemical reaction and combustion method is characterized in that the problems can be overcome theoretically, the combustion efficiency is high, and the combustion heat value of the fuel can be improved by firstly cracking the methanol fuel to generate the mixed gas of carbon monoxide and hydrogen and then combusting. However, a special cracking reaction device is required to be additionally arranged on the combustion heat supply device or in the combustion heat supply system, the device is a closed container which can continuously and stably provide high-temperature, catalytic and hypoxic environments, and liquid alcohol-based fuel can be preheated, vaporized and cracked from the closed container. Although the method has many advantages, the method has problems, not only is the manufacturing cost higher, but also the carbon deposition problem which is difficult to avoid exists, and further the phenomena of reaction efficiency reduction, catalyst poisoning, pipeline blockage and the like are generated, and the equipment and the operation safety are seriously influenced.

At present, equipment using a burning liquid alcohol-based fuel as a heat supply heat source in the market mainly has two structural forms, taking a methanol hot water heating boiler as an example: one is a form of adding an alcohol-based burner after being modified on the basis of the structure of a common coal-fired boiler, and a nozzle of the burner directly sprays flame to a hearth to heat the heating circulating water on the inner wall side of a water pipe in the hearth and in a boiler; the other type is a mode of adding a liner and a fire tube to the alcohol-based burner, wherein a metal liner is used as a burning cavity, the metal liner and the metal fire tube adopt a three-return mode, the liner and the fire tube are submerged in water, a nozzle of the burner directly sprays flame into the liner (the burning cavity), and heating circulating water outside the liner and on the outer wall side of the fire tube is heated by high-temperature flame in the metal liner and high-temperature smoke on the inner wall side of the fire tube. In the two structural forms, because the flame in the hearth and the inner container is only separated from the heated circulating water by a metal wall, and the return water temperature of the heating circulating water is very low, the combustion environmental temperature in the hearth and the inner container is not high. At present, the alcohol-based heat source device adopting two similar structural forms has the problems of low combustion environment temperature, poor combustion state and the like no matter which combustion method is adopted.

SUMMERY OF THE UTILITY MODEL

Purpose of the utility model

Aiming at the defects of the prior art, the utility model provides an alcohol-based fuel heat storage type catalytic combustion liner with high combustion environment temperature and good combustion state and a low-nitrogen heat source device formed by the liner.

Technical scheme

The utility model provides an alcohol group fuel heat-retaining formula catalytic combustion inner bag, including the inner bag container wall, the upper portion of inner bag container wall is equipped with the exhaust port, the lower part of inner bag container wall is equipped with the bocca, the inside of inner bag container wall is equipped with the heat-retaining inside lining, the inside of heat-retaining inside lining forms the high temperature combustion chamber, be equipped with the heat conduction adjustment layer between the inner wall of inner bag container wall and the heat-retaining inside lining, the inside of inner bag container wall still is equipped with honeycomb catalytic combustion board, honeycomb catalytic combustion board separates the high temperature combustion chamber in with the heat-retaining inside lining into accent wind burning section and peroxide burning section two parts, peroxide burning section is located 9 divided one side that is close to bocca 19 of honeycomb catalytic combustion board, inner bag container wall inside is located for the heating chamber between heat-retaining inside lining and the exhaust port, the heating intracavity.

The whole shape of the container wall of the inner container is a straight cylinder shape or a bending shape.

The heat conduction adjusting layer is an air gap or a gap filled with heat conduction powder.

The fire-blocking heating pipes are one or more rows of pipes communicated together.

The metal air pipe is installed outside the container wall of the inner container, air distribution pipes are arranged on the sides of the air regulation combustion section and the peroxide combustion section in the heat storage lining, one end of each air distribution pipe penetrates through the other end of the heat storage lining, penetrates through the container wall of the inner container and is communicated with the metal air pipe, one end of each metal air pipe is closed, and an air door is arranged at the other end of each metal air pipe.

The honeycomb catalytic combustion plate is a structure formed by combining a grid material with uniform material, an integrally formed honeycomb plate, a combined honeycomb module or a mesh material with different material and the honeycomb plate.

The utility model provides an if low nitrogen heat source device that alcohol group fuel heat accumulation formula catalytic combustion inner bag constitutes, including alcohol group fuel heat accumulation formula catalytic combustion inner bag, the pot shell, the combustor, waste heat recovery ware and communicating pipe exhaust fume, alcohol group fuel heat accumulation formula catalytic combustion inner bag is located in the pot shell, the exhaust port of alcohol group fuel heat accumulation formula catalytic combustion inner bag, the air door, the export of bocca and fender fire heating pipe is located outside the pot shell, form the space of a inclosed splendid attire liquid after sealing between pot shell and alcohol group fuel heat accumulation formula catalytic combustion inner bag, the exhaust port is equipped with waste heat recovery ware that exhausts fume outward, waste heat recovery ware and pot shell of exhausting fume pass through communicating pipe intercommunication, the bocca of alcohol group fuel heat accumulation formula catalytic combustion inner bag is connected to the spout of combustor.

The exhaust smoke waste heat recoverer is a closed container, heat exchange filler is installed in the exhaust smoke waste heat recoverer, a water return pipe is arranged on the upper side of the heat exchange filler, a spray header is installed on the water return pipe, the spray header is located above the heat exchange filler, the lower end of the exhaust smoke waste heat recoverer is communicated into a boiler shell through a communicating pipe, and a smoke exhaust cylinder is arranged at the upper end of the exhaust smoke waste heat recoverer.

The smoke outlet is communicated with the interior of the smoke exhaust waste heat recovery device through a smoke exhaust pipe, and the end part of the smoke exhaust pipe in the smoke exhaust waste heat recovery device is provided with a shield for dispersing smoke and preventing water from entering and is positioned below the heat exchange filler.

The pot shell can be a cylindrical, pot-shaped or rectangular geometric body, and one pot shell is internally provided with an alcohol-based fuel heat storage type catalytic combustion liner or more than or equal to 2 alcohol-based fuel heat storage type catalytic combustion liners.

Advantages and effects

A surrounding lining made of high-temperature solid heat storage materials is additionally arranged in a metal container forming the inner container to form a high-temperature combustion cavity with heat storage and radiation heat release functions, a honeycomb catalytic combustion plate is arranged in the high-temperature combustion cavity to divide the combustion cavity into two combustion sections, the vaporization combustion of one part of fuel and the chemical reaction post-combustion of the other part of fuel are completed together, and meanwhile, a plurality of low-nitrogen combustion technologies of sectional combustion, shade combustion and split flame combustion are fused, so that a relatively ideal result is obtained in specific practice.

Drawings

FIG. 1 is a schematic diagram of a vertical structure of an alcohol-based fuel heat storage type catalytic combustion liner;

FIG. 2 is a schematic diagram of an L-shaped structure of an alcohol-based fuel heat storage type catalytic combustion liner;

FIG. 3 is a schematic diagram of a low-nitrogen heat source device formed by an alcohol-based fuel heat storage type catalytic combustion liner in a vertical structure;

fig. 4 is a schematic view of a low-nitrogen heat source device with an L-type structure, which is composed of an alcohol-based fuel heat storage type catalytic combustion liner.

Description of reference numerals: 1. the boiler comprises a smoke exhaust barrel, a smoke exhaust waste heat recoverer, a water return pipe, a heat exchange filler, a boiler shell, a metal air pipe, a heat distribution pipe, a heat storage lining, a honeycomb catalytic combustion plate, a heat conduction adjusting layer, a combustor, a spray header, a smoke exhaust pipe, a communicating pipe, a fire blocking heating pipe, a liner container wall, a ventilation door, a smoke exhaust port, a fire spraying port and a fire spraying port, wherein the smoke exhaust pipe comprises 2, the smoke exhaust waste heat recoverer comprises 3, the water return pipe, 4, the heat exchange filler, 5, the boiler shell.

Detailed Description

The invention will be further explained with reference to the drawings:

as shown in fig. 1 and 2, fig. 1 is a schematic view of a vertical structure of an alcohol-based fuel heat storage type catalytic combustion liner; fig. 2 is a schematic diagram of an L-shaped structure of an alcohol-based fuel heat storage type catalytic combustion liner. The alcohol-based fuel heat storage type catalytic combustion liner comprises a liner container wall 16, wherein the liner container wall 16 is made of metal materials, the overall shape of the liner container wall 16 is a straight cylinder shape or a bent shape, and the inner cavity of the liner container wall 16 is a rectangle, a circle or other geometric bodies meeting the requirements. The upper portion of inner bag container wall 16 is equipped with exhaust port 18, and the lower part of inner bag container wall 16 is equipped with bocca 19, and the inside of inner bag container wall 16 is equipped with heat-retaining inside lining 8, and the inside of heat-retaining inside lining 8 forms the high temperature combustion chamber, and heat-retaining inside lining 8 is made for current conventional high temperature solid heat-retaining material, is equipped with heat conduction adjustment layer 10 between the inner wall of inner bag container wall 16 and heat-retaining inside lining 8, and heat conduction adjustment layer 10 is the air gap or for filling the clearance that has the heat conduction powder. The honeycomb catalytic combustion plate 9 is arranged in the inner container wall 16, the honeycomb catalytic combustion plate 9 divides a high-temperature combustion cavity in the heat storage lining 8 into an air-adjusting combustion section and a peroxide combustion section, the peroxide combustion section is positioned on one side of the honeycomb catalytic combustion plate 9 which is separated and close to the fire jet 19, and the honeycomb catalytic combustion plate 9 is a structure formed by a mesh grid material with uniform material, an integrally formed honeycomb plate, a combined honeycomb module or a mesh material with different materials and a honeycomb plate in a composite mode. A heating cavity is arranged between the heat storage lining 8 and the smoke exhaust port 18 inside the container wall 16 of the inner container, a fire blocking heating pipe 15 is arranged in the heating cavity, the outlet and the inlet of the fire blocking heating pipe 15 are positioned outside the container wall 16 of the inner container, and the fire blocking heating pipe 15 is a row or a plurality of rows of pipelines communicated together. The metal wind pipe 6 is installed outside the inner container wall 16, the side of the air regulation combustion section and the peroxide combustion section in the heat storage lining 8 is provided with the air distribution pipe 7, one end of the air distribution pipe 7 penetrates through the other end of the heat storage lining 8 to penetrate through the inner container wall 16 and is communicated with the metal wind pipe 6, one end of the metal wind pipe 6 is closed, the other end of the metal wind pipe is provided with the air door 17, and the air door 17 is communicated with the atmosphere or other combustible gas supply pipelines.

As shown in fig. 3 and 4, fig. 3 is a schematic view of a low-nitrogen heat source device with a vertical structure, which is composed of an alcohol-based fuel heat storage type catalytic combustion liner; fig. 4 is a schematic view of a low-nitrogen heat source device with an L-type structure, which is composed of an alcohol-based fuel heat storage type catalytic combustion liner. The low-nitrogen heat source device formed by the alcohol-based fuel heat storage type catalytic combustion liner comprises the alcohol-based fuel heat storage type catalytic combustion liner, a pot shell 5 and a burner 11, waste heat recoverer 2 and communicating pipe 14 discharge fume, alcohol group fuel heat accumulation formula catalytic combustion inner bag is located in pot shell 5, pot shell 5 is a sealed metal container, exhaust port 18, air door 17, the export of bocca heating pipe 15 is located outside pot shell 5 of alcohol group fuel heat accumulation formula catalytic combustion inner bag, form the space of a inclosed splendid attire liquid after sealed between pot shell and the alcohol group fuel heat accumulation formula catalytic combustion inner bag, exhaust port 18 is equipped with waste heat recoverer 2 that discharges fume outward, waste heat recoverer 2 that discharges fume passes through communicating pipe 14 with pot shell 5 and communicates, the spout of combustor 11 is connected at the bocca 19 of alcohol group fuel heat accumulation formula catalytic combustion inner bag, fuel and flame are sprayed to the high temperature combustion intracavity when combustor 11 burns. The smoke exhaust waste heat recoverer 2 is a closed container, heat exchange filler 4 is installed in the smoke exhaust waste heat recoverer 2, a water return pipe 3 is arranged on the upper side of the heat exchange filler 4, a spray header 12 is installed on the water return pipe 3, the spray header 12 is located above the heat exchange filler 4, the lower end of the smoke exhaust waste heat recoverer 2 is communicated into a boiler shell 5 through a communicating pipe 14, and a smoke exhaust barrel 1 is arranged at the upper end of the smoke exhaust waste heat recoverer 2. The smoke outlet 18 is communicated with the interior of the smoke exhaust waste heat recoverer 2 through a smoke exhaust pipe 13, and the end part of the smoke exhaust pipe 13 in the smoke exhaust waste heat recoverer 2 is provided with a shield which can disperse smoke and prevent water from entering and is positioned below the heat exchange filler 4. The pot shell 5 can be various geometric bodies meeting the requirements, such as a cylindrical shape, a pot shape or a cuboid, and one alcohol-based fuel heat storage type catalytic combustion liner or more than or equal to 2 alcohol-based fuel heat storage type catalytic combustion liners are arranged in one pot shell 5.

The combustor 11 generates flue gas, and the flue gas is discharged out of the low-nitrogen heat source device through the air-adjusting combustion section, the honeycomb catalytic combustion plate 9, the peroxide combustion section, the heating cavity, the smoke outlet 18, the smoke exhaust pipe 13, the heat exchange filler 4 and the smoke exhaust pipe 1. In practical application, an induced draft fan can be additionally arranged at the outlet of the smoke exhaust tube 1 according to specific conditions and parameters.

Liquid sprayed from the spray header 12 enters between the inner container wall 16 and the boiler shell 9 through the communicating pipe 14, then enters the fire-blocking heating pipe 15 through the inlet of the fire-blocking heating pipe 15, and finally is discharged out of the low-nitrogen heat source device from the outlet of the fire-blocking heating pipe 15.

The application range of the alcohol-based fuel heat storage type catalytic combustion liner and the low-nitrogen heat source device formed by the same is not limited to the combustion and application of alcohol-based fuel, and can also be suitable for the mixed combustion and application of liquid fuel, liquid fuel and gas fuel.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes introduced by the technical solutions of the present invention are still in the protection scope of the present invention.

Claims

1. The utility model provides an alcohol group fuel heat-retaining formula catalytic combustion inner bag which characterized in that: comprises an inner container wall (16), the upper part of the inner container wall (16) is provided with a smoke outlet (18), the lower part of the inner container wall (16) is provided with a fire nozzle (19), the inner part of the inner container wall (16) is provided with a heat storage lining (8), the inner part of the heat storage lining (8) forms a high-temperature combustion chamber, a heat conduction adjusting layer (10) is arranged between the inner wall of the inner container wall (16) and the heat storage lining (8), the inner part of the inner container wall (16) is also provided with a honeycomb catalytic combustion plate (9), the honeycomb catalytic combustion plate (9) divides the high-temperature combustion chamber in the heat storage lining (8) into an air-adjusting combustion section and an oxygen combustion section, the oxygen combustion section is positioned at one side which is separated by the honeycomb catalytic combustion plate (9) and is close to the fire nozzle (19), a heating chamber is arranged between the heat storage lining (8) and the smoke outlet (18) in the inner container wall (16), and, the outlet and the inlet of the fire-blocking heating pipe (15) are positioned outside the wall (16) of the liner container.

2. The alcohol-based fuel thermal storage type catalytic combustion liner according to claim 1, wherein: the overall shape of the container wall (16) of the inner container is a straight cylinder shape or a bending shape.

3. The alcohol-based fuel thermal storage type catalytic combustion liner according to claim 1, wherein: the heat conduction adjusting layer (10) is an air gap or a gap filled with heat conduction powder.

4. The alcohol-based fuel thermal storage type catalytic combustion liner according to claim 1, wherein: the fire-blocking heating pipes (15) are one or more rows of pipes communicated together.

5. The alcohol-based fuel thermal storage type catalytic combustion liner according to claim 1, wherein: install metal wind pipe (6) outward in inner bag container wall (16), the side of the accent wind burning section in heat-retaining inside lining (8) and peroxide burning section all is equipped with air distribution pipe (7), and the one end of air distribution pipe (7) is passed heat-retaining inside lining (8) other end and is passed inner bag container wall (16) and communicate with metal wind pipe (6), and the one end of metal wind pipe (6) is confined, and the other end is equipped with air door (17).

6. The alcohol-based fuel thermal storage type catalytic combustion liner according to claim 1, wherein: the honeycomb catalytic combustion plate (9) is a structure formed by combining a grid material with uniform material, an integrally formed honeycomb plate, a combined honeycomb module or a mesh material with different material and a honeycomb plate.

7. A low-nitrogen heat source device formed by the alcohol-based fuel heat storage type catalytic combustion liner as claimed in claim 5, characterized in that: including alcohol group fuel heat storage formula catalytic combustion inner bag, pot shell (5), combustor (11), waste heat recovery ware of discharging fume (2) and communicating pipe (14), alcohol group fuel heat storage formula catalytic combustion inner bag is located in pot shell (5), smoke vent (18) of alcohol group fuel heat storage formula catalytic combustion inner bag, air door (17), the export of bocca (19) and fender fire heating pipe (15) is located outside pot shell (5), form the space of a inclosed splendid attire liquid after sealed between pot shell and the alcohol group fuel heat storage formula catalytic combustion inner bag, smoke vent (18) are equipped with waste heat recovery ware of discharging fume (2) outward, waste heat recovery ware of discharging fume (2) and pot shell (5) are through communicating pipe (14) intercommunication, the spout connection of combustor (11) is at bocca (19) of alcohol group fuel heat storage formula catalytic combustion inner bag.

8. The low-nitrogen heat source device composed of the alcohol-based fuel heat storage type catalytic combustion liner according to claim 7, characterized in that: the exhaust smoke waste heat recoverer (2) is a closed container, heat exchange filler (4) is installed in the exhaust smoke waste heat recoverer (2), a water return pipe (3) is arranged on the upper side of the heat exchange filler (4), a spray head (12) is installed on the water return pipe (3), the spray head (12) is located above the heat exchange filler (4), the lower end of the exhaust smoke waste heat recoverer (2) is communicated into a boiler shell (5) through a communicating pipe (14), and a smoke exhaust barrel (1) is arranged at the upper end of the exhaust smoke waste heat recoverer (2).

9. The low-nitrogen heat source device composed of the alcohol-based fuel heat storage type catalytic combustion liner according to claim 8, characterized in that: the smoke outlet (18) is communicated with the interior of the smoke exhaust waste heat recoverer (2) through a smoke exhaust pipe (13), the end part of the smoke exhaust pipe (13) in the smoke exhaust waste heat recoverer (2) is provided with a shield which can disperse smoke and prevent water from entering, and the shield is positioned below the heat exchange filler (4).

10. The low-nitrogen heat source device composed of the alcohol-based fuel heat storage type catalytic combustion liner according to claim 7, 8 or 9, characterized in that: the pot shell (5) can be a cylindrical, pot-shaped or rectangular geometric body, and one alcohol-based fuel heat storage type catalytic combustion liner or more than or equal to 2 alcohol-based fuel heat storage type catalytic combustion liners are arranged in one pot shell (5).