CN218723101U

CN218723101U - Combustion furnace for producing carbon black

Info

Publication number: CN218723101U
Application number: CN202222719395.3U
Authority: CN
Inventors: 张靖怡
Original assignee: Shizuishan Huinong Area Daming Chemical Co ltd
Current assignee: Shizuishan Huinong Area Daming Chemical Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-03-24
Anticipated expiration: 2032-10-17

Abstract

The utility model belongs to the technical field of fire burning furnace, and a fire burning furnace for producing carbon black is disclosed, include: a furnace body; the top end of the furnace body is provided with a feeding cylinder, the bottom end of the furnace body is connected with a discharging cylinder, and the top end of the feeding cylinder is provided with an acetylene gas nozzle; the furnace body includes outer courage and inner bag, the utility model discloses a divide into multilayer structure with the furnace body, wherein the heat-resistant steel material layer in the outside can make the furnace body have stronger high temperature resistant and sealing performance, the corrosion resistance of carbon black coking can be improved greatly to inboard inner bag, and aluminium silicate fiber felt layer and water-cooling jacket layer can effectively play the heat preservation effect, thereby prevent that the heat from scattering and disappearing too fast, and the refractory castable bed of material of hi-alumina is resistant to burn and prevents fires, the carbon brick layer has fine slag resistance, and can protect the refractory castable bed of material of hi-alumina, and then can make the furnace body have excellent high temperature resistant, keep warm and performance such as sealed, very big satisfied strict schizolysis condition, the result of use of device has been improved greatly.

Description

Combustion furnace for producing carbon black

Technical Field

The utility model belongs to the technical field of fire burning furnace, concretely relates to fire burning furnace for producing carbon black.

Background

The combustion furnace is a device for cracking hydrocarbon, and acetylene black is produced in the combustion furnaceAfter the acetylene gas enters the combustion furnace, the acetylene gas is generally required to be cracked into acetylene black and hydrogen at the high temperature of 1200-1400 ℃, the pressure in the furnace is required to be controlled between-20 and-50 mm of water column, and the acetylene flow is controlled at 100m ³ About/h, the requirements on the heat insulation performance and the sealing performance of the furnace body are high, the heat insulation performance and the sealing performance of the existing equipment are difficult to meet the requirements, and in order to solve the problems in the prior art, a combustion furnace with a high-temperature-resistant heat-insulating sealing furnace wall structure needs to be designed urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire burning furnace for producing carbon black to the heat preservation performance and the sealing performance of the existing equipment who proposes in solving above-mentioned background art are not good, influence the problem of result of use.

In order to achieve the above object, the utility model provides a following technical scheme: a furnace for the production of carbon black comprising:

a furnace body;

the top end of the furnace body is provided with a feeding cylinder, the bottom end of the furnace body is connected with a discharging cylinder, and the top end of the feeding cylinder is provided with an acetylene gas nozzle;

the furnace body comprises an outer container and an inner container, and a water-cooling jacket layer is arranged between the outer container and the inner container;

the outer liner comprises a heat-resistant steel material layer, a carbon brick layer, a high-aluminum refractory pouring material layer and an aluminum silicate fiber felt layer which are sequentially arranged from outside to inside, and the aluminum silicate fiber felt layer is connected with the water-cooling jacket layer.

Preferably, the combustion furnace for producing carbon black further comprises:

the water pipe is arranged at the top end of the side wall of the furnace body, the bottom end of the side wall of the furnace body is connected with a water return pipe, and one ends of the water return pipe and the water pipe extend into the water-cooling jacket layer.

the return pipe is arranged between the feeding cylinder and the discharging cylinder;

and an electric valve is arranged on the outer wall of the return pipe.

Preferably, the device further comprises a fixed cylinder arranged between the return pipe and the discharge cylinder, and a filter screen is arranged inside the fixed cylinder.

Preferably, the inner wall of the feeding cylinder is provided with graphite bricks, and the inner container comprises an asbestos plate layer.

Preferably, flanges are arranged at two ends of the fixed cylinder, and the fixed cylinder is fixedly connected with the return pipe and the discharge cylinder through the flanges.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, the furnace body is divided into a multi-layer structure, wherein the heat-resistant steel layer on the outer side can make the furnace body have stronger high temperature resistance and sealing performance, the inner liner on the inner side can greatly improve the corrosion resistance of carbon black coking, and the aluminum silicate fiber felt layer and the water-cooling jacket layer can effectively play a heat preservation effect, thereby preventing the heat from dissipating too fast, and the high-aluminum fire-resistant pouring material layer is fire-resistant and fireproof, the carbon brick layer has good slag resistance, and can protect the high-aluminum fire-resistant pouring material layer, so that the furnace body can have excellent high temperature resistance, heat preservation, sealing performance and other performances, thereby greatly meeting strict cracking conditions and greatly improving the use effect of the device;

meanwhile, through the cooperation of the water-cooling jacket layer, the water delivery pipe and the water return pipe, circulating water flow can be formed, so that the effects of cooling and keeping the temperature of the furnace layer constant can be quickly achieved, and hydrogen generated by acetylene cracking reaction can be led back into the combustion furnace through the return pipe, so that the negative pressure in the furnace can be adjusted, and the practicability is greatly improved;

through adding solid cylinder and filter screen, can prevent that the solid particle that the schizolysis produced from getting into in the backward flow pipe to prevent the pipeline jam, improved the security greatly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the furnace body of the present invention;

FIG. 3 is a schematic view of the internal structure of the fixing cylinder of the present invention;

in the figure: 1. an acetylene gas nozzle; 2. a feeding cylinder; 3. a water delivery pipe; 4. a furnace body; 41. an outer liner; 401. a heat-resistant steel layer; 402. a carbon brick layer; 403. a high-aluminum refractory pouring material layer; 404. a layer of aluminium silicate fibre felt; 42. an inner container; 5. a water-cooled jacket layer; 6. a water return pipe; 7. a discharging barrel; 8. a fixed cylinder; 9. an electrically operated valve; 10. a return pipe; 11. graphite bricks; 12. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a burner for producing carbon black, comprising:

a furnace body 4;

the top end of the furnace body 4 is provided with a feeding cylinder 2, the bottom end of the furnace body 4 is connected with a discharging cylinder 7, and the top end of the feeding cylinder 2 is provided with an acetylene gas nozzle 1;

the furnace body 4 comprises an outer liner 41 and an inner liner 42, and a water-cooling jacket layer 5 is arranged between the outer liner 41 and the inner liner 42;

the outer liner 41 comprises a heat-resistant steel material layer 401, a carbon brick layer 402, a high-alumina refractory pouring material layer 403 and an aluminum silicate fiber felt layer 404 which are arranged in sequence from outside to inside, and the aluminum silicate fiber felt layer 404 is connected with the water-cooling jacket layer 5.

In the embodiment that can be realized by the application, the thickness of the heat-resistant steel material layer 401 can be selected to be 2-4mm, the thickness of the carbon brick layer 402 can be selected to be 10-15cm, the thickness of the high-alumina refractory pouring material layer 403 can be selected to be 20-25cm, the thickness of the aluminum silicate fiber felt layer 404 can be selected to be 4-6cm, the thickness of the liner 42 can be selected to be 10-15cm, and the thickness of the water-cooling jacket layer 5 can be selected to be 4-6cm.

Through the technical scheme:

specifically, in the device, the furnace body 4 is of a multilayer structure, wherein the outermost side is a heat-resistant steel material layer 401, on one hand, the furnace body 4 can have high-temperature resistance through the heat-resistant steel material layer 401, on the other hand, effective sealing of the furnace body 4 can be realized, so that the sealing effect is improved, the liner 42 of the innermost layer can be made of an asbestos plate, the asbestos plate has high tensile strength, high flexibility, chemical resistance and thermal erosion resistance, and can be used as the inner wall of the furnace body 4, so that the corrosion resistance of carbon black coking can be greatly improved;

meanwhile, the aluminum silicate fiber felt layer 404 has the advantages of high temperature resistance, good thermal stability, small heat capacity, good mechanical vibration resistance, small thermal expansion, good heat insulation performance and the like, and can play a role in heat preservation under the cooperation of the water-cooling jacket layer 5, thereby preventing the heat from being dissipated too fast;

the high-aluminum refractory pouring material layer 403 has the functions of burning resistance and fire prevention, the arranged carbon brick layer 402 has good slag resistance, good thermal stability, low thermal expansion coefficient, high-temperature strength, high temperature resistance, good wear resistance, resistance to erosion of various acids, alkalis, salts and organic solvents, and the high-aluminum refractory pouring material layer 403 can be protected while heat is preserved;

in conclusion, under the cooperation of the structure, the furnace body 4 has excellent performances of high temperature resistance, heat preservation, sealing and the like, so that strict cracking conditions are greatly met, and the using effect of the device is greatly improved.

Further, the inner wall of the feeding cylinder 2 is provided with graphite bricks 11; the feed cylinder 2 can be protected by graphite bricks 11.

Referring to fig. 1, the furnace for producing carbon black further includes:

the water conveying pipe 3 is arranged at the top end of the side wall of the furnace body 4, the bottom end of the side wall of the furnace body 4 is connected with a water return pipe 6, and the water return pipe 6 and one end of the water conveying pipe 3 extend into the water-cooling jacket layer 5;

a return pipe 10 arranged between the feed cylinder 2 and the discharge cylinder 7;

and the outer wall of the return pipe 10 is provided with an electric valve 9.

The above-mentioned

Through the technical scheme:

specifically, the cooling medium in the water-cooling jacket layer 5 can be circulating water, and the circulating water is circulated through the water conveying pipe 3 and the water return pipe 6, so that the effects of cooling and keeping the temperature of the furnace layer constant can be rapidly achieved;

and through addding back flow 10, the switch of steerable back flow 10 of motorised valve 9, under the effect of this structure, can lead back the hydrogen that acetylene cracking reaction produced back to in the burning furnace again to can be used for adjusting the negative pressure in the stove, improved the practicality greatly.

Referring to fig. 3, the device further comprises a fixed cylinder 8 disposed between the return pipe 10 and the discharge cylinder 7, and a filter screen 12 is disposed inside the fixed cylinder 8.

Specifically, through setting up fixed cylinder 8, and filter screen 12 in the fixed cylinder 8 can prevent that the solid particle that the schizolysis produced from getting into in the back flow 10 to prevent the pipeline jam, improved the security greatly.

Further, flanges are arranged at two ends of the fixed cylinder 8, and the fixed cylinder 8 is fixedly connected with the return pipe 10 and the discharge cylinder 7 through the flanges; the fixed cylinder 8 can be detached and connected through a flange, so that the filter screen 12 can be maintained and replaced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A furnace for the production of carbon black, comprising:

a furnace body (4);

a feeding cylinder (2) is arranged at the top end of the furnace body (4), a discharging cylinder (7) is connected to the bottom end of the furnace body (4), and an acetylene gas nozzle (1) is arranged at the top end of the feeding cylinder (2);

the furnace body (4) comprises an outer liner (41) and an inner liner (42), and a water-cooling jacket layer (5) is arranged between the outer liner (41) and the inner liner (42);

the outer liner (41) comprises a heat-resistant steel material layer (401), a carbon brick layer (402), a high-alumina refractory pouring material layer (403) and an aluminum silicate fiber felt layer (404) which are sequentially arranged from outside to inside, and the aluminum silicate fiber felt layer (404) is connected with the water-cooling jacket layer (5).

2. A burner for the production of carbon black in accordance with claim 1, said burner for the production of carbon black further comprising:

set up in raceway (3) on furnace body (4) lateral wall top, just the lateral wall bottom of furnace body (4) is connected with wet return (6), wet return (6) all extend to in water-cooling jacket layer (5) with the one end of raceway (3).

3. A furnace for the production of carbon black in accordance with claim 2, wherein said furnace for the production of carbon black further comprises:

a return pipe (10) arranged between the feeding cylinder (2) and the discharging cylinder (7);

and an electric valve (9) is arranged on the outer wall of the return pipe (10).

4. A furnace as set forth in claim 3 for the production of carbon black, wherein: the device is characterized by further comprising a fixed cylinder (8) arranged between the return pipe (10) and the discharge cylinder (7), and a filter screen (12) is arranged inside the fixed cylinder (8).

5. A furnace as set forth in claim 4 for the production of carbon black, wherein: the inner wall of the feeding cylinder (2) is provided with graphite bricks (11), and the inner container (42) comprises an asbestos plate layer.

6. A furnace as set forth in claim 5 for the production of carbon black wherein: flanges are arranged at two ends of the fixed cylinder (8), and the fixed cylinder (8) is fixedly connected with the return pipe (10) and the discharge cylinder (7) through the flanges.