CN220201852U - Burner of coal water slurry gasifier - Google Patents

Abstract

The utility model provides a burner of a coal water slurry gasifier. The burner of the water-coal-slurry gasification furnace comprises an inner oxygen pipe, wherein an inner oxygen interface is arranged on the outer side of the inner oxygen pipe, a coal slurry pipe is sleeved on the outer side of the inner oxygen pipe, a coal slurry interface is arranged on the outer side of the coal slurry pipe, a first fixing piece is arranged on the inner wall of the coal slurry pipe, an outer oxygen pipe is sleeved on the outer side of the coal slurry pipe, an outer oxygen interface is arranged on the outer side of the outer oxygen pipe, and a second fixing piece is arranged on the inner wall of the outer oxygen pipe; the coal slurry pipe and the external oxygen pipe are fixedly connected on the same axis through the second fixing piece, the stability of the pipeline is kept, and the mixture can be discharged into the gasifier after being fully mixed in a cavity at the front end of the external oxygen pipe.

Description

Burner of coal water slurry gasifier

Technical Field

The utility model belongs to the technical field of coal water slurry gasification furnace burners, and particularly relates to a coal water slurry gasification furnace burner.

Background

The coal water slurry gasification is a technology for processing coal into gas fuel in a coal water slurry mode, in the coal water slurry gasification process, coal and gasifying agent are subjected to gasification reaction at high temperature to generate gas fuel, heat is generated at the same time, and a technician can realize high-efficiency, stable and low-pollution combustion effect in the coal water slurry gasification process by optimizing the design of the burner and selecting a proper nozzle type, so that key support is provided for popularization and application of the coal water slurry gasification technology by the development and application of the burner, and meanwhile, the progress and innovation of the combustion technology are promoted.

The burner nozzle of the coal water slurry gasifier with the common name of CN209619289U comprises a central oxygen channel, a coal slurry channel, an outer oxygen channel and a cooling water jacket which are sequentially arranged from inside to outside with a central shaft; at least 3 first fan-shaped fixed blocks are arranged on one cross section in the coal slurry channel in a dispersing way, and at least 3 second fan-shaped fixed blocks are arranged on one cross section in the external oxygen channel in a dispersing way; the cooling water jacket comprises a water inlet channel, a water outlet channel and a window type cooling water tank; the window type cooling water tank comprises a first arc angle, wherein the first arc angle is positioned at the transition part of the window type cooling water tank to the external oxygen channel and is positioned at the outer side of the window type cooling water tank. The water-coal-slurry gasifier burner has the advantages that the coaxiality of each channel is good, the cooling of the opposite fire end face is uniform, the thermal stress of the opposite fire end face is dispersed, the service life of the water-coal-slurry gasifier burner is prolonged, the window type cooling water tank is adopted at the burner, the cooling effect is realized by automatically spraying water to a workpiece, the heat dissipation efficiency of the window type cooling water tank is relatively low, the rapid cooling required by high-strength processing cannot be met, the circle centers of all pipelines are kept on the same axis through the fixing blocks, the flow of medium in the pipelines is reduced, in addition, internal and external oxygen and coal slurry directly enter a hearth to react, and no cavity is used for premixing the internal and external oxygen and the coal slurry, so that the water-coal-slurry gasifier burner is necessary to provide a new water-coal-slurry gasifier burner for solving the technical problems.

Disclosure of Invention

The utility model solves the technical problem of providing the coal water slurry gasifier burner which has higher practicability and simpler structure through simple operation.

In order to solve the technical problems, the burner of the water-coal-slurry gasification furnace provided by the utility model comprises an inner oxygen pipe, wherein an inner oxygen interface is arranged at the outer side of the inner oxygen pipe, a coal slurry pipe is sleeved at the outer side of the inner oxygen pipe, a coal slurry interface is arranged at the outer side of the coal slurry pipe, a first fixing piece is arranged on the inner wall of the coal slurry pipe, an outer oxygen pipe is sleeved at the outer side of the coal slurry pipe, an outer oxygen interface is arranged at the outer side of the outer oxygen pipe, and a second fixing piece is arranged on the inner wall of the outer oxygen pipe; the cooling water pipe is sleeved with the jacket, an external oxygen pipe is arranged on the inner side of the jacket cooling water pipe, a water inlet and a water outlet are respectively arranged at two ends of the jacket cooling water pipe, a limiting block is arranged on the outer side of the jacket cooling water pipe, a jogged block is arranged on the lower surface of the limiting block, and a supporting piece is arranged at the lower end of the internal oxygen pipe.

As a further scheme of the utility model, the inner oxygen interface, the coal slurry interface and the outer oxygen interface are all connected with a conveying pipe through flanges, and the limiting block is connected with a gasification furnace body through flanges so as to facilitate the disassembly and the installation of the conveying pipe.

As a further scheme of the utility model, eight groups of second fixing plates are arranged, four groups of second fixing plates are fixedly arranged at the upper end of the outer side of the coal slurry pipe in an annular structure, and the other four groups of second fixing plates are fixedly arranged at the lower end of the outer side of the coal slurry pipe in an annular structure, and nine groups of air holes are formed in all the eight groups of second fixing plates, so that medium in a pipeline can pass through the air holes quickly.

As a further scheme of the utility model, the diameter of the front end nozzle of the internal oxygen pipe is larger than the internal diameter of the pipe, and the internal oxygen pipe is made of high-pressure carbon steel, so that different shapes can be manufactured conveniently.

As a further scheme of the utility model, the inner wall of the nozzle of the coal slurry pipe is arched, and the coal slurry pipe is made of high-pressure carbon steel, so that the pipe wall is prevented from being quickly worn by coal slurry.

As a further scheme of the utility model, a jacket cooling water pipe is arranged on the outer side of the outer oxygen pipe, the inner wall of the outer oxygen pipe is arc-shaped, the nozzle of the outer oxygen pipe is higher than the nozzle of the inner oxygen pipe and the nozzle of the coal slurry pipe, a group of cavities are formed at the front end of the outer oxygen pipe, and the outer oxygen pipe is made of high-pressure carbon steel, has high toughness and prevents external force from being damaged.

As a further scheme of the utility model, the jacket cooling water pipe is spirally and fixedly connected to the outer side of the outer oxygen pipe, a limiting block and a jogging block are fixedly arranged on the outer side of the jacket cooling water pipe, the lower end of the outer oxygen pipe is connected with the jogging block through four groups of supporting pieces, and the outer oxygen pipe is fixedly connected with the jogging block.

Compared with the related art, the burner of the water-coal-slurry gasification furnace provided by the utility model has the following beneficial effects:

1. the jacket cooling water pipe is arranged on the outer side of the outer oxygen pipe, the coal slurry is mixed with oxygen after being heated and pretreated through the jacket cooling water pipe, the mixture is rapidly cooled through the jacket cooling water pipe, and the damage of the gasification furnace caused by the overhigh temperature at the joint of the burner and the gasification furnace is prevented;

2. according to the utility model, eight groups of second fixing plates are respectively and fixedly arranged on the inner wall of the outer oxygen pipe and the outer side of the coal slurry pipe up and down, nine groups of air holes are formed in the second fixing plates, the coal slurry pipe and the outer oxygen pipe are fixedly connected on the same axis through the second fixing plates, so that the stability of the pipeline is kept, and the air holes can keep the flow and the flow velocity in the pipeline normal;

3. the inner oxygen pipe nozzle is arranged behind the coal slurry pipe nozzle, the outer oxygen pipe nozzle is of a hemispherical structure, a group of premixing cavities are formed, oxygen sprayed from the inner oxygen pipe nozzle is firstly mixed with coal slurry and then mixed with oxygen sprayed from the outer oxygen pipe nozzle, and in the process, the mixture is fully mixed in a narrow cavity and then discharged into the gasification furnace.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic diagram of a cross-sectional elevation of a burner of a coal water slurry gasifier according to the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional structure of A-A in FIG. 1 of a burner of a coal water slurry gasifier according to the present utility model;

FIG. 3 is a schematic diagram showing the cross-sectional structure of the burner of the water-coal-slurry gasifier in front view at B in FIG. 1;

FIG. 4 is a schematic view showing the bottom view of a burner of a water-coal-slurry gasifier according to the present utility model.

In the figure: 1. an internal oxygen tube; 2. an internal oxygen interface; 3. a coal slurry pipe; 4. a coal slurry interface; 5. a first fixing piece; 6. an external oxygen tube; 7. an external oxygen interface; 8. a second fixing piece; 9. a jacket cooling water pipe; 10. a water inlet; 11. a water outlet; 12. a limiting block; 13. a fitting block; 14. and a support sheet.

Detailed Description

Referring to fig. 1, 2, 3 and 4 in combination, a burner of a water-coal-slurry gasification furnace comprises an inner oxygen pipe 1, an inner oxygen interface 2 is arranged at the outer side of the inner oxygen pipe 1, a coal slurry pipe 3 is sleeved at the outer side of the inner oxygen pipe 1, a coal slurry interface 4 is arranged at the outer side of the coal slurry pipe 3, a first fixing piece 5 is arranged on the inner wall of the coal slurry pipe 3, an outer oxygen pipe 6 is sleeved at the outer side of the coal slurry pipe 3, an outer oxygen interface 7 is arranged at the outer side of the outer oxygen pipe 6, and a second fixing piece 8 is arranged on the inner wall of the outer oxygen pipe 6; the utility model relates to a jacket cooling water pipe 9, an outer oxygen pipe 6 is arranged on the inner side of the jacket cooling water pipe 9, a water inlet 10 and a water outlet 11 are respectively arranged at two ends of the jacket cooling water pipe 9, a limiting block 12 is arranged on the outer side of the jacket cooling water pipe 9, a jogged block 13 is arranged on the lower surface of the limiting block 12, a supporting plate 14 is arranged on the lower end of an inner oxygen pipe 1, the inner oxygen interface 2, a coal slurry pipe 3, the coal slurry interface 4, a first fixing piece 5, the outer oxygen pipe 6, an outer oxygen interface 7, a second fixing piece 8, the jacket cooling water pipe 9, the limiting block 12, the jogged block 13 and the supporting plate 14 are all made of high-pressure carbon steel, the high-pressure carbon steel has higher strength, toughness and excellent manufacturing and processing performance, can bear the working conditions of high pressure and high temperature, the inner oxygen pipe 1 and the outer oxygen pipe 6 are manufactured by bending and forming the pipelines and the interfaces through high-pressure carbon steel, then the pipelines and the interfaces are connected through a welding process, the heat treatment is carried out on the pipelines to improve the material strength, finally the finished pipelines are subjected to sand blasting and polishing through surface treatment, and the interior of the pipelines is kept smooth.

Preferably, the inner oxygen interface 2, the coal slurry interface 4 and the outer oxygen interface 7 are all connected with a conveying pipe through flanges, the limiting block 12 is connected with a gasification furnace body through flanges, grooves on the inner oxygen interface 2, the coal slurry interface 4, the outer oxygen interface 7 and the limiting block 12 are respectively aligned and clamped with the conveying pipe and the furnace body, and the inner oxygen interface, the coal slurry interface 4, the outer oxygen interface 7 and the limiting block are fixedly connected through flanges, so that the inner oxygen interface, the coal slurry interface, the outer oxygen interface 7 and the limiting block are convenient for workers to assemble and disassemble and are convenient for daily maintenance.

Preferably, the second stationary blade 8 is provided with eight groups, and four groups of second stationary blades 8 are the fixed outside upper end that sets up at coal slurry pipe 3 of annular structure, and four groups of second stationary blades 8 are the fixed outside lower extreme that sets up at coal slurry pipe 3 of annular structure in addition, all offer nine groups bleeder vent on eight groups of second stationary blades 8, pass through welded fastening respectively with eight groups of second stationary blades 8 on the inner wall of coal slurry pipe 3 and outer oxygen pipe 6, pass through second stationary blade 8, with coal slurry pipe 3 and outer oxygen pipe 6 fixed connection on same axis, keep the pipeline stable to the bleeder vent can keep pipeline inside flow velocity of flow normal.

Preferably, the diameter of the front end nozzle of the inner oxygen pipe 1 is larger than the inner diameter of the pipe, the inner oxygen pipe 1 is made of high-pressure carbon steel, the high-pressure carbon steel is used for respectively manufacturing the pipeline of the inner oxygen pipe 1 and the nozzle, the pipeline is connected through a welding process, and the high-pressure oxygen flow is diffused through the nozzle with larger diameter to be mixed with coal slurry better.

Preferably, the inner wall of the nozzle of the coal slurry pipe 3 is arched, the coal slurry pipe 3 is made of high-pressure carbon steel, and when the coal slurry flows to the nozzle through a pipeline, the flow speed is increased when the coal slurry flows to the nozzle through the arched nozzle, and the coal slurry is better mixed with oxygen flow.

Preferably, the outside of outer oxygen pipe 6 is provided with jacket condenser tube 9, the inner wall of outer oxygen pipe 6 is the arc, outer oxygen pipe 6 spout is higher than the spout of interior oxygen pipe 1 and coal slurry pipe 3, outer oxygen pipe 6 front end forms a set of cavity, outer oxygen pipe 6 is high-pressure carbon steel material, coal slurry and oxygen flow even mixing in the cavity of outer oxygen pipe 6 front end atomize the coal slurry, the gasifier during operation, water inlet 10 on jacket condenser tube 9 transports the pipeline with the coolant liquid, rethread delivery port 11 is with the coolant liquid after the intensification leading-out, the recirculation after the cooling, realize the device cooling down fast through jacket condenser tube 9, prevent the gasifier damage because of the high temperature appears.

Preferably, the jacket cooling water pipe 9 is the outside of heliciform fixed connection at outer oxygen pipe 6, the outside of jacket cooling water pipe 9 is fixed and is provided with stopper 12 and gomphosis piece 13, the lower extreme of outer oxygen pipe 6 is connected with gomphosis piece 13 through four sets of backing plates 14, the coolant liquid passes through the heliciform jacket cooling water pipe 9, after high-pressure oxygen stream and coal slurry are at outer oxygen pipe 6 lower extreme cavity misce bene, outer oxygen pipe 6 front end cavity receives the pressure, four sets of backing plates 14 dispersion pressure of its lower extreme prevent that the pressure from being too big to lead to outer oxygen pipe 6 front end impaired, through this structure oxygen and coal slurry can be discharged the gasifier after narrow and small cavity intensive mixing again.

The utility model provides a working principle of a coal water slurry gasifier burner, which comprises the following steps:

a first step of: when the coal slurry atomizing device is used, each material conveying pipe is connected to each joint through a flange, a machine is started, high-speed oxygen flow flows into the inner oxygen pipe 1 and the outer oxygen pipe 6 through the inner oxygen interface 2 and the outer oxygen interface 7, coal slurry flows into the coal slurry pipe 3 through the coal slurry interface 4, and in a cavity at the front end of the outer oxygen pipe 6, the oxygen flow and the coal slurry are uniformly mixed to atomize the coal slurry;

and a second step of: after completion, coal slurry generates gasification reaction at high temperature of oxygen and fuel gas, and carries out the residual process in the gasification furnace, high temperature can upwards transfer heat along with the pipeline material, a water inlet 10 on a jacket cooling water pipe 9 conveys cooling liquid into the pipeline, and the cooling liquid after temperature rise is led out through a water outlet 11, is recycled after cooling, and can be checked and maintained by detaching flanges at all joints in daily maintenance.

It should be noted that, the device structure and the drawings of the present utility model mainly describe the principle of the present utility model, in terms of the technology of the design principle, the arrangement of the power mechanism, the power supply system, the control system, etc. of the device is not completely described, and on the premise that the person skilled in the art understands the principle of the present utility model, the specific details of the power mechanism, the power supply system and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art;

the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the drawings, the specific connection modes of the parts are conventional means such as mature bolts, rivets and welding in the prior art, the machines, the parts and the equipment are conventional models in the prior art, and the structures and the principles of the parts are all known by the skilled person through technical manuals or through conventional experimental methods.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents, and in other related technical fields, which are equally encompassed by the scope of the present utility model.

Claims (7)

1. A coal water slurry gasifier burner, comprising:

the coal slurry treatment device comprises an inner oxygen pipe (1), wherein an inner oxygen interface (2) is arranged on the outer side of the inner oxygen pipe (1), a coal slurry pipe (3) is sleeved on the outer side of the inner oxygen pipe (1), a coal slurry interface (4) is arranged on the outer side of the coal slurry pipe (3), a first fixing piece (5) is arranged on the inner wall of the coal slurry pipe (3), an outer oxygen pipe (6) is sleeved on the outer side of the coal slurry pipe (3), an outer oxygen interface (7) is arranged on the outer side of the outer oxygen pipe (6), and a second fixing piece (8) is arranged on the inner wall of the outer oxygen pipe (6);

the cooling water pipe (9) is sleeved, an outer oxygen pipe (6) is arranged on the inner side of the cooling water pipe (9) is sleeved, a water inlet (10) and a water outlet (11) are respectively arranged at two ends of the cooling water pipe (9), a limiting block (12) is arranged on the outer side of the cooling water pipe (9) is sleeved, a jogged block (13) is arranged on the lower surface of the limiting block (12), and a supporting sheet (14) is arranged at the lower end of the inner oxygen pipe (1).

2. The burner of a coal water slurry gasifier according to claim 1, wherein: the inner oxygen interface (2), the coal slurry interface (4) and the outer oxygen interface (7) are all connected with a material conveying pipe through flanges, and the limiting block (12) is connected with a gasification furnace body through flanges.

3. The burner of a coal water slurry gasifier according to claim 1, wherein: the second fixing plates (8) are provided with eight groups, four groups of second fixing plates (8) are fixedly arranged at the upper end of the outer side of the coal slurry pipe (3) in an annular structure, and the other four groups of second fixing plates (8) are fixedly arranged at the lower end of the outer side of the coal slurry pipe (3) in an annular structure, and nine groups of ventilation holes are formed in the eight groups of second fixing plates (8).

4. The burner of a coal water slurry gasifier according to claim 1, wherein: the diameter of the front end nozzle of the internal oxygen pipe (1) is larger than the inner diameter of the pipe, and the internal oxygen pipe (1) is made of high-pressure carbon steel.

5. The burner of a coal water slurry gasifier according to claim 1, wherein: the inner wall of the nozzle of the coal slurry pipe (3) is arched, and the coal slurry pipe (3) is made of high-pressure carbon steel.

6. The burner of a coal water slurry gasifier according to claim 1, wherein: the outside of outer oxygen pipe (6) is provided with and presss from both sides cover condenser tube (9), the inner wall of outer oxygen pipe (6) is the arc, outer oxygen pipe (6) spout is higher than the spout of interior oxygen pipe (1) and coal slurry pipe (3), outer oxygen pipe (6) front end forms a set of cavity.

7. The burner of a coal water slurry gasifier according to claim 1, wherein: the jacket cooling water pipe (9) is spirally and fixedly connected to the outer side of the outer oxygen pipe (6), a limiting block (12) and a jogged block (13) are fixedly arranged on the outer side of the jacket cooling water pipe (9), the jogged block (13) is connected to the lower end of the outer oxygen pipe (6) through four groups of supporting pieces (14), and the jogged block (13) is connected with the furnace body.