CN218539599U

CN218539599U - Full jacket pure oxygen gasification furnace

Info

Publication number: CN218539599U
Application number: CN202223216379.9U
Authority: CN
Inventors: 张国庆
Original assignee: Shijiazhuang Changjia Electromechanical Equipment Co ltd
Current assignee: Shijiazhuang Changjia Electromechanical Equipment Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-02-28
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a full clamp cover pure oxygen gasification stove, be in including furnace body and setting the stove bottom assembly of furnace body bottom, the furnace body includes down the furnace body and is located the last furnace body on lower furnace body upper portion, the key lies in: the upper furnace body comprises a cylindrical upper water jacket, two elliptical seal heads which are connected with the upper water jacket and form an integrated water jacket structure, and a water inlet, a sewage outlet and a steam outlet which are matched; the top of the upper furnace body is provided with a water gas outlet and a coal feeding port. The beneficial effects of the utility model are that: 1. the upper furnace body is designed into an integrated water jacket structure, so that the aims of maximizing waste heat recovery and preventing wall hanging can be fulfilled; 2. the middle part of the lower furnace body is provided with a jacket temperature equalizing zone, so that the generation of air resistance can be avoided, the temperature of the tube type water jacket is more uniform, the gasification reaction speed in the furnace is improved, and the effect of ash and carbon residue is reduced.

Description

Full jacket pure oxygen gasification furnace

Technical Field

The utility model belongs to the technical field of coal gasification, concretely relates to full clamp cover pure oxygen gasification stove.

Background

The existing pure oxygen gasification furnace has a structure that the upper section (including the top) is a heat insulation section, and the lower section is a water jacket section, such as the technical scheme disclosed in patents of CN110951503A, CN209685706U and the like. The disadvantages of this structure are: 1. the operation flexibility is small, semi-molten slag of an oxidation section and a reduction section of a gasification layer is easy to hang on the wall, the thickness of a reaction layer is not enough, and the gasification strength and the yield of water gas cannot be improved; 2. the effective heat exchange area is small, and part of effective heat can not be sufficiently recovered in the reaction process of the gasification furnace.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a full clamp cover pure oxygen gasifier, its top adopts the structure of double-layered shell type, lets in the circulating water to pressing from both sides the cover, can effectively prevent the wall built-up phenomenon and realize waste heat recovery utilization, the purpose of byproduct steam.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a pure oxygen gasification stove of full clamp cover, includes the furnace body and sets up the stove bottom assembly of furnace body bottom, the furnace body includes down the furnace body and is located the last furnace body on lower furnace body upper portion, the key lies in: the upper furnace body comprises a cylindrical upper water jacket, two elliptical seal heads which are connected with the upper water jacket and form an integrated water jacket structure, and a water inlet, a sewage outlet and a steam outlet which are matched; the top of the upper furnace body is provided with a water gas outlet and a coal feeding port.

Further, the lower furnace body is a tube type water jacket, and the height of the upper furnace body is 1/3-2/5 of the height of the lower furnace body.

Furthermore, an annular jacket temperature equalizing zone is arranged in the middle of the lower furnace body, and the tubes in the lower furnace body, which are positioned at the upper side and the lower side of the jacket temperature equalizing zone, are communicated with the jacket temperature equalizing zone.

Furthermore, a material level detector mounting opening and a view hole mounting opening are formed in the top of the upper furnace body.

Furthermore, the furnace bottom assembly comprises a grate, a chain grate machine for driving the grate to rotate and a gasifying agent inlet air box.

Furthermore, the bottom of the furnace body is provided with an ash bin and a slag breaking strip.

Furthermore, an ash box for receiving ash in the ash bin is arranged below the furnace body.

Furthermore, a lower ash seat plate valve is arranged at an ash outlet of the ash bin.

Furthermore, an ash conveyer is arranged below a slag outlet of the ash box.

Furthermore, a slag outlet of the slag box is provided with a lower ash gate valve and an ash chute for guiding ash to the ash conveyor.

The utility model has the advantages that: 1. the upper furnace body is designed into an integrated water jacket structure, so that the purposes of maximizing waste heat recovery and preventing the wall hanging phenomenon can be realized; 2. the middle part of the lower furnace body is provided with the jacket temperature equalizing zone, so that the generation of air resistance can be avoided, the temperature of the tube type water jacket is more uniform, the gasification reaction speed in the furnace is improved, and the effect of ash and carbon residue is reduced.

The present invention will be described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of the full-jacket pure oxygen gasification furnace of the present invention.

In the attached drawing, 1, a lower furnace body, 2, an upper furnace body, 2-1, an upper water jacket, 2-2, an oval end socket, 2-3, a water inlet, 2-4, a sewage discharge outlet, 2-5, a steam outlet, 2-6, a water gas outlet, 2-7, a coal feeding port, 2-8, a material level detector mounting port, 2-9, a peephole mounting port, 3, a jacket temperature equalizing zone, 4, a furnace grate, 5, a chain grate machine, 6, a gasifying agent inlet air box, 7, an ash bin, 8, a broken slag bar, 9, an ash box, 10, a lower ash seat plate valve, 11, an ash conveyor, 12, a lower ash plate valve, 13 and an ash chute.

Detailed Description

Referring to the attached drawings, the utility model provides a full jacket pure oxygen gasification stove, including the furnace body and set up the stove bottom assembly in the furnace body bottom, the furnace body includes furnace body 1 down and is located the last furnace body 2 on furnace body 1 upper portion down, and the key lies in: the upper furnace body 2 comprises a cylindrical upper water jacket 2-1, two oval end sockets 2-2 which are connected with the upper water jacket 2-1 and form an integrated water jacket structure, and a water inlet 2-3, a sewage discharge outlet 2-4 and a steam outlet 2-5 which are matched.

The upper water jacket 2-1 comprises an inner cylinder and an outer cylinder, and the two elliptical seal heads 2-2 are respectively connected with the inner cylinder and the outer cylinder, so that an integrated water jacket structure is formed. Through the water jacket structure with the upper furnace body 2 design formula as an organic whole, can increase the waste heat recovery area, improve steam recovery rate. Circulating water is introduced into an upper water jacket 2-1 formed by an inner-outer double-layer structure, and the heat dissipated outwards in the furnace is absorbed by water, so that the effects of waste heat recovery and utilization and byproduct steam are achieved; the integrated water jacket structure formed by the double-layer oval end socket 2-2 can save a furnace body and a heat-insulating lining refractory material at the top of the furnace body, solve the problem of heat consumption of the furnace, save investment, save energy, effectively prevent the phenomenon of wall hanging, improve the height of a carbon layer and gasification strength, reduce the temperature of a coal gas outlet at the top of the furnace, improve the operating environment and improve the gas evolution of a single furnace.

The top of the upper furnace body 2 is provided with a water gas outlet 2-6, a coal feeding port 2-7, a material level detector mounting port 2-8 and a peephole mounting port 2-9.

The lower furnace body 1 is a tubular water jacket, and the height of the upper furnace body 2 is 1/3-2/5 of the height of the lower furnace body 1. Therefore, the gasification layer can be arranged in the range of the jacket of the lower furnace body 1, the effective heat loss of the gasification layer can be reduced, and the utilization rate of carbon is improved.

An annular jacket temperature equalizing zone 3 is arranged in the middle of the lower furnace body 1, and the tubes on the upper side and the lower side of the jacket temperature equalizing zone 3 in the lower furnace body 1 are communicated with the jacket temperature equalizing zone 3. The design of the jacket temperature equalizing zone 3 can structurally improve the strength of a tubulation water jacket positioned at the lower part of the jacket, avoid the generation of air resistance, ensure that the temperature of a jacket is more uniform, ensure the uniform temperature of a gasification layer in the gasification furnace, improve the gasification reaction effect, reduce ash and carbon residue and prolong the service life.

The inner cylinder wall of the lower furnace body 1 is welded with a temperature measuring sleeve, so that a temperature measuring element is convenient to install. The temperature measuring device transmits data to the DCS control system through collection, and the DCS control system regulates and controls the steam and oxygen ratio and the rotating speed of the grate machine according to the detected temperature, so that the temperature of a gasification layer is controlled, and the gasification temperature is stabilized between the carbon conversion temperature and the softening temperature.

The furnace bottom assembly comprises a fire grate 4, a chain grate machine 5 for driving the fire grate 4 to rotate and a gasification agent inlet air box 6.

The bottom of the furnace body is provided with an ash bin 7 and a slag breaking bar 8. The slag breaking strips 8 are of a trapezoidal structure with a narrow top and a wide bottom, so that the slag breaking capacity is improved, the effects of bearing slag, preventing flow and reducing the abrasion of a water jacket are achieved, the slag discharging angle is reasonable, internal flow prevention is not needed, the phenomena of carbon flowing and carbon collapse of the gasification furnace are thoroughly avoided, the process of the gasification furnace is more stable, and the coke return rate of furnace slag can be kept at an ideal level to ensure no carbon flowing.

An ash box 9 for receiving ash in the ash bin 7 is arranged below the furnace body. A lower ash seat plate valve 10 is arranged at the ash outlet of the ash bin 7. An ash conveyer 11 is arranged below the slag outlet of the ash box 9. A slag outlet of the ash box 9 is provided with an ash discharging gate valve 12 and an ash chute 13 which guides the flow to the ash conveyor 11.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a full pure oxygen gasification stove that presss from both sides cover, includes the furnace body and sets up the stove bottom assembly of furnace body bottom, the furnace body includes furnace body (1) down and is located last furnace body (2) on lower furnace body (1) upper portion, its characterized in that: the upper furnace body (2) comprises a cylindrical upper water jacket (2-1), two oval seal heads (2-2) which are connected with the upper water jacket (2-1) and form an integrated water jacket structure, and a water inlet (2-3), a sewage outlet (2-4) and a steam outlet (2-5) which are matched; the top of the upper furnace body (2) is provided with a water gas outlet (2-6) and a coal feeding port (2-7).

2. The fully jacketed pure oxygen furnace as claimed in claim 1, wherein: the lower furnace body (1) is a tube type water jacket, and the height of the upper furnace body (2) is 1/3-2/5 of the height of the lower furnace body (1).

3. The fully jacketed pure oxygen furnace as claimed in claim 2, characterized in that: an annular jacket temperature equalizing zone (3) is arranged in the middle of the lower furnace body (1), and the tubes in the lower furnace body (1) on the upper side and the lower side of the jacket temperature equalizing zone (3) are communicated with the jacket temperature equalizing zone (3).

4. The fully jacketed pure oxygen furnace as claimed in claim 1, wherein: the top of the upper furnace body (2) is provided with a material level detector mounting opening (2-8) and a detection hole mounting opening (2-9).

5. The fully jacketed pure oxygen furnace as claimed in any one of claims 1 to 4, characterized in that: the furnace bottom assembly comprises a furnace grate (4), a chain grate machine (5) for driving the furnace grate (4) to rotate and a gasification agent inlet air box (6).

6. The fully jacketed pure oxygen furnace of claim 5, wherein: an ash bin (7) and a slag breaking strip (8) are arranged at the bottom of the furnace body.

7. The fully jacketed pure oxygen furnace as claimed in claim 6, wherein: an ash box (9) for receiving ash in the ash bin (7) is arranged below the furnace body.

8. The fully jacketed pure oxygen furnace as claimed in claim 7, wherein: a lower ash seat plate valve (10) is arranged at the ash outlet of the ash bin (7).

9. The fully jacketed pure oxygen furnace as claimed in claim 7, wherein: and a clinker conveyor (11) is arranged below the clinker outlet of the clinker box (9).

10. The fully-jacketed pure oxygen gasifier according to claim 9, characterized in that: and a slag outlet of the slag box (9) is provided with a lower ash gate valve (12) and a slag chute (13) for guiding slag to the slag conveyor (11).