CN212274669U

CN212274669U - Split type ash settling chamber for integrated pouring

Info

Publication number: CN212274669U
Application number: CN202020754743.9U
Authority: CN
Inventors: 周亚全; 叶松波; 张紫光; 胡华兵; 田恒; 吴建梅; 蒋庆辉; 李德伟; 张林生; 卢爱民; 余文云; 张弛; 李贵恒
Original assignee: Yunnan Yuanxin Carbon Co ltd
Current assignee: Yunnan Yuanxin Carbon Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-01-01
Anticipated expiration: 2030-05-09

Abstract

The split type ash settling chamber which is integrally poured comprises two combustion chambers (1) which are separately arranged and a flue (2) which penetrates through the two combustion chambers; the combustion chambers are arc-shaped arch crown long-strip-shaped combustion chambers with 90-degree fan-shaped sections, and the arc-shaped arch crowns of the two combustion chambers are arranged oppositely; the two ends of the flue are connected to the lower part of the arc-shaped vault of the combustion chamber; the combustion chamber and the flue are respectively composed of a steel shell (3), a stainless steel anchor hook fastener (4) welded on the inner wall surface of the steel shell, a heat insulation layer (5) filled on the inner wall surface of the steel shell and a refractory material layer (6) integrally poured outside the heat insulation layer; the upper part of the outer side wall of one combustion chamber is provided with a smoke inlet (14) communicated with a flue of the rotary kiln, and the upper part of the outer side wall of the other combustion chamber is provided with a smoke outlet (15) communicated with a smoke interface of the waste heat boiler. The utility model discloses structural stability, long service life.

Description

Split type ash settling chamber for integrated pouring

Technical Field

The utility model relates to a carbon petroleum coke calcination device technical field, concretely relates to a subside burner that is used for petroleum coke calcination rotary kiln high temperature flue gas to handle.

Background

At present, the environmental protection requirement is strict, and a large amount of volatile matters, particles and the like carried in tail gas need to be settled and then further combusted in the petroleum coke calcination production process, so that the requirement of reducing the total emission of pollutants in the production tail gas is met. In the prior art, a middle masonry partition wall type ash settling chamber is generally adopted as a settling incineration device, but because the partition wall, the side wall, the end wall and the vault of the ash settling chamber all adopt refractory brick masonry structures, all the walls are respectively built in the building process, and the connection of the joint surfaces is not firm. In order to improve the quality of calcined coke, the temperature of a calcining process is greatly improved compared with the original temperature, after the temperature is improved, the shrinkage deformation of refractory bricks is increased, cracks of wall bodies are increased, the integral structure of an ash settling chamber is unstable, the partition wall collapses in 3-5 months, the inner wall falls off about 1 year, the shells of side walls and end walls are burnt through, and the like, so that the production is interrupted, and the cost is increased.

Therefore, after the process is changed, the original design of the ash settling chamber cannot meet the requirements of the existing production process, and particularly, the short service life of the intermediate partition wall of the ash settling chamber becomes a short plate which hinders the safe and stable operation of various production enterprises and restricts the adjustment of the production process, and the problem is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that prior art exists, provide a stable in structure, long service life's split type ash chamber that sinks that integration was pour.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the split type ash settling chamber which is integrally poured comprises two combustion chambers which are separately arranged and a flue which penetrates through the two combustion chambers;

the combustion chambers are arc-shaped arch crown long-strip-shaped combustion chambers with 90-degree fan-shaped sections, and the arc-shaped arch crowns of the two combustion chambers are arranged oppositely; the two ends of the flue are connected to the lower part of the arc-shaped vault of the combustion chamber;

the combustion chamber and the flue are both composed of a steel shell, a stainless steel anchor hook fastener welded on the inner wall surface of the steel shell, a heat insulation layer filled on the inner wall surface of the steel shell and a refractory material layer integrally poured outside the heat insulation layer;

the upper part of the outer side wall of one combustion chamber is provided with a smoke inlet communicated with a flue of the rotary kiln, and the upper part of the outer side wall of the other combustion chamber is provided with a smoke outlet communicated with a smoke interface of the waste heat boiler.

Furthermore, air supply ports are respectively arranged on two end faces of the combustion chamber, an access hole is also arranged at one end of the combustion chamber, and an observation hole is arranged on the outer side wall of the combustion chamber.

Further, the flue is a cylindrical flue.

Further, the stainless steel anchor hook fastener is a Y-shaped stainless steel anchor hook.

Furthermore, expansion gaps are reserved in the refractory material layer.

Compared with the prior art, the utility model, main advantage is as follows:

1. the ash settling chamber is divided into two parts, the middle part of the ash settling chamber is communicated with the flue, the surface area of the whole ash settling chamber is increased, and each surface of the ash settling chamber has a ventilation cooling function due to the isolation belts between the two ash settling chambers, so that the cooling of smoke can be accelerated, and the service life of the ash settling chamber is prolonged.

2. There is not the partition wall that the structure is weak between two ash settling chambers, and ash settling chamber and flue inner chamber face all adopt stainless steel anchor hook welding back to fill heat preservation, pouring refractory material structure, form the integral type pouring structure of imitative rotary kiln lining formula, and its structural strength is high, the structure is firm, long service life.

3. The arc-shaped vault of the ash settling chamber designed according to the flow direction of flue gas reduces the flow resistance of the flue gas, the indoor volume is reduced compared with that of the ash settling chamber with the original structure, the negative pressure drop of the ash settling chamber is reduced, the negative pressure of the kiln head of the rotary kiln is improved, the temperature of the kiln head can be effectively reduced, and the negative pressure adjustment is facilitated.

4. The process negative pressure adjustment of the rotary kiln, the waste heat boiler, the flue gas desulfurization and other processes which are respectively communicated with the two ash settling chambers is facilitated, and the three processes are more matched.

5. The ash chamber structure that sinks that split type design, integral type were pour for the structure of sinking the ash chamber is more stable, has avoided the wall body to collapse, the emergence of phenomenon such as inner wall drops, has effectively reduced production maintenance cost and potential safety hazard, has reduced the waste of manpower and materials.

6. The ash settling chamber is provided with an air supplementing port, can supplement air for indoor combustion, has the functions of cooling by cold air and adjusting negative pressure, and also has the function of an explosion-proof hole.

7. The expansion joint is reserved when the refractory material layer is poured, a buffer area is provided for expansion with heat and contraction with cold of the furnace body, and the inner wall can be prevented from warping and falling off.

Drawings

FIG. 1 is a front view of the split type ash settling chamber of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a right side view of FIG. 1;

fig. 5 is a sectional view a-a of fig. 2.

Detailed Description

Referring to fig. 1 to 5, the integrally cast split type ash settling chamber comprises two combustion chambers 1 which are arranged in a split manner and a flue 2 which penetrates through the two combustion chambers. The combustion chamber 1 is an arc-shaped arch top long-strip-shaped combustion chamber with a 90-degree fan-shaped section, and the arc-shaped arch tops of the two combustion chambers are arranged oppositely; the flue 2 is a cylindrical flue, and two ends of the flue are connected to the lower part of the arc-shaped vault of the combustion chamber. The upper part of the outer side wall of one combustion chamber is provided with a smoke inlet 14 communicated with a flue of the rotary kiln, and the upper part of the outer side wall of the other combustion chamber is provided with a smoke outlet 15 communicated with a smoke interface of the waste heat boiler. As shown by arrows in fig. 1, high-temperature flue gas discharged from a flue of the rotary kiln enters a first combustion chamber from a flue inlet 14 for settlement combustion, then enters a second combustion chamber through the flue for continuous settlement combustion, and treated flue gas tail gas enters a waste heat boiler through a flue outlet 15 for waste heat recovery.

The vault of two combustion chambers is the arc curved surface vault according to flue gas flow direction design, and the curved surface design helps reducing flue gas circulation resistance, reduces the negative pressure loss of depositing the ash chamber to reduce rotary kiln head temperature, the negative pressure adjustment of the rotary kiln of being convenient for. The front end face and the rear end face of the combustion chamber are vertical wall faces, and air supply ports 11 are respectively arranged on the two end faces and used for collecting combustion-supporting air from air so as to be convenient for adjusting the negative pressure and the temperature of the whole set of system. And one end of the combustion chamber is also provided with an access hole 12 for use in kiln shutdown and maintenance. The outer side surface of the combustion chamber is also an upright wall surface, and the outer side wall is provided with two observation ports 13 which are convenient for observing the combustion condition of the ash settling chamber.

As shown in fig. 5, the combustion chamber and the flue are both composed of a steel casing 3, a stainless steel anchor hook fastener 4 welded on the inner wall surface of the steel casing, an insulating layer 5 filled on the inner wall surface of the steel casing, and a refractory material layer 6 integrally cast outside the insulating layer. The stainless steel anchor hook fixing part 4 is a Y-shaped stainless steel anchor hook and can better anchor poured refractory materials. And an expansion gap 7 is reserved on the poured refractory material layer 6. Fig. 5 only schematically shows the stainless steel anchor hook 4 and the expansion joint 7. And winding a black adhesive tape with the thickness of 2-3 mm as an expansion gap during anchor hook manufacturing. The expansion joint 7 can be filled with high-temperature refractory fiber felt.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. The split type ash settling chamber is characterized by comprising two combustion chambers (1) which are arranged in a split mode and a flue (2) which penetrates through the two combustion chambers;

the combustion chamber (1) is an arc-shaped arch top long-strip-shaped combustion chamber with a 90-degree fan-shaped section, and the arc-shaped arch tops of the two combustion chambers are arranged oppositely; two ends of the flue (2) are connected to the lower part of the arc-shaped vault of the combustion chamber;

the combustion chamber and the flue are respectively composed of a steel shell (3), a stainless steel anchor hook fastener (4) welded on the inner wall surface of the steel shell, a heat insulation layer (5) filled on the inner wall surface of the steel shell and a refractory material layer (6) integrally poured outside the heat insulation layer;

the upper part of the outer side wall of one combustion chamber is provided with a smoke inlet (14) communicated with a flue of the rotary kiln, and the upper part of the outer side wall of the other combustion chamber is provided with a smoke outlet (15) communicated with a smoke interface of the waste heat boiler.

2. The integrally cast split type ash settling chamber as claimed in claim 1, wherein air supply ports (11) are respectively arranged on two end faces of the combustion chamber, an access port (12) is further arranged at one end of the combustion chamber, and an observation port (13) is arranged on the outer side wall of the combustion chamber.

3. The integrally cast split type dust settling chamber as claimed in claim 1 or 2, wherein the flue (2) is a cylindrical flue.

4. The integrally cast split type dust settling chamber of claim 1 or 2, wherein the stainless steel fluke fixing member (4) is a Y-shaped stainless steel fluke.

5. The split type ash settling chamber of integrated casting according to claim 1 or 2, characterized in that an expansion gap (7) is reserved in the refractory material layer (6).

6. The integrally cast split type dust settling chamber of claim 3, wherein the stainless steel anchor hook fastener (4) is a Y-shaped stainless steel anchor hook.

7. The integrally cast split type dust settling chamber of claim 5, wherein the stainless steel anchor hook fastener (4) is a Y-shaped stainless steel anchor hook.