CN216011739U - Negative pressure combustion thermal state test furnace - Google Patents
Negative pressure combustion thermal state test furnace Download PDFInfo
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- CN216011739U CN216011739U CN202122695492.9U CN202122695492U CN216011739U CN 216011739 U CN216011739 U CN 216011739U CN 202122695492 U CN202122695492 U CN 202122695492U CN 216011739 U CN216011739 U CN 216011739U
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Abstract
The utility model discloses a negative pressure combustion thermal state test furnace, which comprises a furnace foundation, a furnace body frame arranged on the furnace foundation, a furnace body arranged in the furnace body frame, a chimney arranged at the top of the furnace body frame and a smoke exhaust fan arranged at the upper part of the furnace body frame; the longitudinal section of the furnace body is in an inverted L shape and comprises a vertical part for supporting the combustion of the burner and a horizontal part for discharging smoke; pipe components and fire-viewing mirrors for mounting detection elements are embedded in one side wall of the vertical part of the furnace body at equal intervals, and short pipes for mounting pressure measuring elements are embedded in the upper, middle and lower parts of the other side wall of the vertical part of the furnace body; the bottom of the furnace body is vertically embedded with a flange pipe for mounting a burner. The utility model discloses an experimental stove can once inspect the combustion performance of a batch of nozzle, also can inspect the combustion performance of a nozzle alone, and the flexible operation, work efficiency is high, the utility model discloses an experimental stove simple structure is firm, low in manufacturing cost, the experiment operation of being convenient for.
Description
Technical Field
The utility model relates to a test furnace technical field, concretely relates to negative pressure burning thermal test stove.
Background
The burner is an important component of the ethylene cracking furnace, and the heat required by the cracking furnace is obtained by burning fuel in the burner. The fuel gas and air are mixed in the burner and then combusted, and the oxygen in the air and the hydrocarbon in the fuel gas carry out combustion reaction and release a large amount of heat. However, when the fuel is burned at a high temperature under an excess oxygen condition, nitrogen in the air reacts with oxygen in the air to generate thermal NOx. It is known that, in the case of combustion in air, the amount of thermal NOx generation can be suppressed by controlling the oxygen concentration, the combustion temperature, and the residence time. Therefore, a test furnace for testing the combustion performance of a burner is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a negative pressure burning thermal test stove for the combustion performance of the nozzle of test ethylene pyrolysis furnace.
The utility model adopts the technical proposal that:
a negative pressure combustion thermal state test furnace comprises a furnace foundation for supporting a furnace body to a certain height, a furnace body frame arranged on the furnace foundation for supporting the furnace body, the furnace body arranged in the furnace body frame, a chimney arranged at the top of the furnace body frame, and a smoke exhaust fan arranged at the upper part of the furnace body frame, wherein an air suction inlet is communicated with a furnace chamber smoke exhaust pipe, and an air outlet is communicated with the chimney; the vertical section of the furnace body is in an inverted L shape and comprises a vertical part for supporting combustion of the burner and a horizontal part for discharging smoke, one end of the horizontal part is connected with the top end of the vertical part, and the other end of the horizontal part extends along the horizontal smoke discharging fan; a plurality of pipe assemblies for mounting detection elements and a plurality of fire observation mirrors are horizontally embedded in one side wall of the vertical part of the furnace body from top to bottom at equal intervals, and short pipes for mounting pressure measuring elements are horizontally embedded in the upper part, the middle part and the lower part of the other side wall of the vertical part of the furnace body; a plurality of flange pipes used for installing burners are vertically buried at the bottom of the furnace body.
Further, the furnace foundation is formed by pouring concrete and comprises three strip-shaped foundations which are arranged on the ground in parallel at intervals.
Further, the furnace body comprises a furnace base and a furnace body, the furnace base is formed by pouring concrete, and a flange pipe for mounting a burner is vertically buried in one side of the furnace base, which is far away from the center of the furnace body frame; the furnace body consists of a furnace shell and a furnace lining, wherein the furnace shell is made of carbon steel, and the furnace lining is made of a fireproof heat-insulating material.
Further, the lower portion of the furnace lining on the side close to the burner is made of refractory bricks, and the remaining portion of the furnace lining is made of refractory cotton.
Further, the furnace body frame is made by shaped steel, and the vertical portion of furnace body is installed in one side of furnace body frame, and the horizontal part of furnace body extends to the center of furnace body frame, is equipped with steel ladder and a plurality of steel platform on the furnace body frame of furnace body horizontal part below, and the pipe assembly and look the fire sight glass setting are on being close to the furnace body lateral wall of steel platform one side.
Furthermore, the pipe assembly comprises a steel pipe, a pipe flange and a blind plate, wherein the steel pipe is filled with fireproof cotton, one end of the steel pipe penetrates through the side wall of the furnace body to be communicated with the furnace chamber, the other end of the steel pipe extends out of the pipe end of the side wall of the furnace body to be welded with the pipe flange, and the blind plate is connected with the pipe flange through a bolt.
Furthermore, an air suction port of the smoke exhaust fan is connected with a smoke exhaust pipe of the furnace chamber through a conical pipe joint, an air supplementing port is formed in the conical pipe joint, an air supplementing pipe is installed in the air supplementing port, and an automatic adjusting valve is arranged on the air supplementing pipe; a temperature measuring element is arranged in the chimney and is interlocked with the automatic regulating valve for control.
The utility model has the advantages that:
1. the L-shaped furnace chamber is arranged to ensure the burning height and reduce the furnace body clear height, thereby facilitating the experiment operation. The smoke exhaust fan is arranged outside the furnace body, so that air supplement and maintenance are convenient. The chimney and the furnace body are separately arranged, so that the structural integrity of the furnace body can be ensured, and the smoke discharge is smoother.
2. Use the utility model discloses an experimental stove can once inspect the combustion performance of a batch of nozzle, also can inspect the combustion performance of a nozzle alone, and the flexible operation, work efficiency is high.
3. The utility model discloses a test furnace simple structure is firm, low in manufacturing cost, the experiment operation of being convenient for.
Drawings
Fig. 1 is a schematic structural view of a negative pressure combustion thermal test furnace of the present invention.
Fig. 2 is a schematic structural view of the tube assembly of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.
Referring to fig. 1, the present embodiment provides a negative pressure combustion thermal test furnace, which includes a furnace foundation 10, a furnace body frame 20, a furnace body 30, a chimney 40, and a smoke exhaust fan 50.
The furnace foundation 10 is formed by pouring concrete, and has a stable structure, reliable support and environmental corrosion resistance. The furnace foundation 10 comprises three strip foundations with the height of 2.5 meters, which are arranged on the ground side by side at intervals. The structural design of the furnace foundation 10 facilitates the installation and debugging of the burner. The top surface of the strip foundation is embedded with an installation steel plate when pouring.
The furnace body frame 20 is formed by welding profile steels, is integrally rectangular, and the bottom of the furnace body frame is welded with a mounting steel plate on the top surface of a strip-shaped foundation. An L-shaped cavity matched with the shape of the furnace body is arranged in the rectangular frame, and a platform used for installing a smoke exhaust fan is arranged on the upper portion of the rectangular frame. The lower part of the rectangular frame is provided with a steel ladder 21 and a plurality of steel platforms 22. The steel ladder 21 and the steel platform 22 are convenient for experimental operation and maintenance.
The chimney 40 is installed on one side of the top of the furnace body frame 20 and comprises a flue and a smoke exhaust hood, wherein the flue is composed of a steel shell and a refractory cotton pipe lined in the steel shell, and the smoke exhaust hood is connected to the top of the flue and used for preventing rainwater from entering the flue.
The smoke exhaust fan 50 is installed on the upper platform of the furnace body frame 20, the air outlet thereof is connected with the flue of the chimney 40 through the smoke exhaust short pipe 52, and the air inlet thereof is connected with the furnace chamber smoke exhaust pipe 4 installed on the end surface of the furnace body through the conical pipe joint 51. An air supply opening is formed in the conical pipe joint 51, an air supply pipe is installed in the air supply opening, and an automatic adjusting valve is arranged on the air supply pipe; the flue of the chimney 40 is provided with a temperature measuring element, and the temperature measuring element is interlocked with the automatic regulating valve. Because the combustion temperature of the burner is high, the smoke discharging temperature in the smoke discharging pipe 4 of the furnace chamber is close to 1200 ℃, cold air is supplemented through the air supplementing pipe to reduce the smoke discharging temperature to be below 900 ℃, and the stable operation of the smoke discharging fan is ensured. Automatic adjustment can be realized through the interlocking control of the automatic adjusting valve and the temperature measuring element.
20 pipe assemblies 1 and 5 observation mirrors 2 used for mounting detection elements are horizontally embedded from top to bottom at equal intervals on one side wall of the vertical part of the furnace body close to the central part of the furnace body frame, each pipe assembly 1 consists of a steel pipe 11, a pipe flange 12 and a blind plate 13, the steel pipe 11 is filled with fireproof cotton 15, one end of each steel pipe 11 penetrates through the side wall of the furnace body to be communicated with the furnace chamber 301, the other end of each steel pipe extends out of the pipe end of the side wall of the furnace body to be welded with the pipe flange 12, and the blind plates 13 are connected with the pipe flanges 12 through bolts 14. The steel pipes 11 are used for installing temperature measuring elements or nitrogen oxide measuring instruments, and a plurality of steel pipes are arranged, so that proper installation positions can be selected according to experimental conditions. When the fireproof cotton is required to be installed, the blind plate 13 is removed, and the fireproof cotton 15 is taken out. The flexible selection of experimenters is facilitated. The fire observation sight glass 2 is convenient for experimenters to observe the combustion condition in the furnace. 3 short pipes 3 for mounting a load cell are horizontally embedded in the upper, middle and lower parts of the other side wall of the vertical part of the furnace body, which is far away from the central part of the furnace body frame; the load cell is used for detecting the pressure in the furnace chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.
Claims (7)
1. A negative pressure combustion thermal state test furnace is characterized by comprising a furnace foundation for supporting a furnace body to a certain height, a furnace body frame arranged on the furnace foundation for supporting the furnace body, the furnace body arranged in the furnace body frame, a chimney arranged at the top of the furnace body frame, and a smoke exhaust fan arranged at the upper part of the furnace body frame, wherein an air suction inlet is communicated with a furnace chamber smoke exhaust pipe, and an air outlet is communicated with the chimney; the longitudinal section of the furnace body is in an inverted L shape and comprises a vertical part for supporting combustion of the burner and a horizontal part for discharging smoke, one end of the horizontal part is connected with the top end of the vertical part, and the other end of the horizontal part extends along the smoke discharging fan in the horizontal direction; a plurality of pipe assemblies for mounting detection elements and a plurality of fire observation mirrors are horizontally embedded in one side wall of the vertical part of the furnace body from top to bottom at equal intervals, and short pipes for mounting pressure measuring elements are horizontally embedded in the upper part, the middle part and the lower part of the other side wall of the vertical part of the furnace body; a plurality of flange pipes used for installing burners are vertically buried at the bottom of the furnace body.
2. The negative pressure combustion thermal state test furnace of claim 1, wherein the furnace foundation is formed by pouring concrete and comprises three strip foundations which are arranged on the ground side by side at intervals.
3. The negative pressure combustion thermal state test furnace of claim 1, wherein the furnace body comprises a furnace base and a furnace body, the furnace base is formed by pouring concrete, and a flange pipe for mounting a burner is vertically buried on one side of the furnace base away from the center of the furnace body frame; the furnace body consists of a furnace shell and a furnace lining, wherein the furnace shell is made of carbon steel, and the furnace lining is made of a fireproof heat-insulating material.
4. The negative pressure combustion thermal test furnace as claimed in claim 3, wherein the lower portion of the furnace lining on the side close to the burner is made of refractory bricks, and the remaining portion of the furnace lining is made of refractory cotton.
5. The negative pressure combustion thermal state test furnace of claim 1, wherein the furnace body frame is made of steel sections, the vertical portion of the furnace body is installed on one side of the furnace body frame, the horizontal portion of the furnace body extends toward the center of the furnace body frame, a steel ladder and a plurality of steel platforms are arranged on the furnace body frame below the horizontal portion of the furnace body, and the tube assembly and the observation mirror are arranged on the side wall of the furnace body near one side of the steel platforms.
6. The negative pressure combustion thermal state test furnace of claim 1, wherein the pipe assembly is composed of a steel pipe, a pipe flange and a blind plate, the steel pipe is filled with fireproof cotton, one end of the steel pipe penetrates through the side wall of the furnace body to be communicated with the furnace chamber, the other end of the steel pipe extends out of the side wall of the furnace body, the pipe flange is welded at the pipe end, and the blind plate is connected with the pipe flange through bolts.
7. The negative pressure combustion thermal state test furnace according to claim 1, wherein an air suction port of the smoke exhaust fan is connected with a smoke exhaust pipe of the furnace chamber through a conical pipe joint, an air supply port is formed in the conical pipe joint, an air supply pipe is installed in the air supply port, and an automatic adjusting valve is arranged on the air supply pipe; a temperature measuring element is arranged in the chimney and is interlocked with the automatic regulating valve for control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122695492.9U CN216011739U (en) | 2021-11-04 | 2021-11-04 | Negative pressure combustion thermal state test furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122695492.9U CN216011739U (en) | 2021-11-04 | 2021-11-04 | Negative pressure combustion thermal state test furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216011739U true CN216011739U (en) | 2022-03-11 |
Family
ID=80586368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122695492.9U Active CN216011739U (en) | 2021-11-04 | 2021-11-04 | Negative pressure combustion thermal state test furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216011739U (en) |
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2021
- 2021-11-04 CN CN202122695492.9U patent/CN216011739U/en active Active
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