CN216869244U - Device for reducing inlet temperature of high-temperature heat exchanger matched with combustion furnace - Google Patents
Device for reducing inlet temperature of high-temperature heat exchanger matched with combustion furnace Download PDFInfo
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- CN216869244U CN216869244U CN202220279980.3U CN202220279980U CN216869244U CN 216869244 U CN216869244 U CN 216869244U CN 202220279980 U CN202220279980 U CN 202220279980U CN 216869244 U CN216869244 U CN 216869244U
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Abstract
The utility model discloses a device for reducing the inlet temperature of a high-temperature heat exchanger matched with a combustion furnace, which comprises the combustion furnace, a high-temperature gas heat exchanger, a wind mixing box, a circulating fan, a wind door, a temperature sensor TE101 and a temperature sensor TE102, wherein high-temperature flue gas of the combustion furnace is connected with the high-temperature gas heat exchanger through a pipeline, low-temperature flue gas of the combustion furnace is discharged through another pipeline, and the circulating fan mixes a low-temperature flue gas outlet of the high-temperature gas heat exchanger with a low-temperature flue gas outlet of the combustion furnace, directly mixes the mixed gas with the high-temperature flue gas of the combustion furnace and then sends the mixed gas to the high-temperature gas heat exchanger through a pipeline. Compared with the existing expansion joint technology, the utility model ensures that the high-temperature heat exchanger cannot be damaged due to high temperature, simultaneously does not influence the heat exchange efficiency of the heat exchanger, has small overall operation energy consumption, utilizes the flue gas at the outlet of the combustion chamber, and is green and environment-friendly.
Description
Technical Field
The utility model relates to the technical field of heat exchange, in particular to a device for reducing the inlet temperature of a high-temperature heat exchanger matched with a combustion furnace.
Background
The heat exchanger (heat exchanger) is a device for transferring partial heat of hot fluid to cold fluid, also called heat exchanger, and plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and the heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler in chemical industry production, and has wide application.
The high-temperature heat exchanger on the market at present is influenced by materials and cost, and the high-temperature inlet temperature of the general design is not higher than 800 ℃. In the operation process of a combustion furnace connected with the high-temperature heat exchanger, the temperature is often higher than 800 ℃, so that the problem that the heat exchanger is deformed or damaged due to high temperature frequently occurs, and great loss is caused to the production and manufacturing industry.
In order to solve the above technical problems, related research for preventing deformation of a high-temperature heat exchanger has been conducted in the industry. Like the chinese utility model patent No. CN 2579906Y, it discloses a gas and air double preheating device for mixing high temperature flue gas of a combustion furnace with low temperature flue gas of a hot blast stove, structurally comprising a gas preheater, an air preheater, a high temperature draught fan, a combustion furnace, etc., and an outlet waste gas pipeline of the hot blast stove enters the gas preheater, the air preheater to preheat gas and air after mixing with flue gas in the combustion furnace; the preheater is divided into a high-temperature heat exchange section and a low-temperature heat exchange section, expansion joints are arranged on a cylinder body of the high-temperature section and a cylinder body of the low-temperature section, the expansion of the cylinder body is separated from the expansion of a tube bundle, and the tube bundle of the heat exchanger of the high-temperature section adopts inner and outer aluminizing; the combustion furnace comprises a combustion chamber and a mixing chamber, wherein a ceramic burner is arranged in the combustion chamber, the mixing chamber is internally provided with the ceramic burner, and combustion smoke in the mixing chamber is mixed with waste gas of the hot blast stove; the utility model discloses an adopt double-barrelled preheating, improve coal gas, air heater, rationally distributed, the operation of being convenient for has solved high temperature pre-heater's material, inflation problem, reduce cost, and the gaseous distribution is even in the barrel, does not have the blind spot, and the pressurized is even, fires burning furnace compact structure reasonable, the misce bene. However, this patent adopts the expansion joint mode to eliminate the high temperature deformation of heat transfer in structural design, but in actual production, combustion furnace equipment because of the influence that receives outside exhaust gas concentration, can often appear the temperature and rise fast and exceed 850 ℃ condition even higher, and the expansion volume of high temperature heat exchanger expansion joint is not enough to satisfy actual expansion demand this moment, causes tube sheet welding seam fracture or expansion fracture to make the unable normal use of heat exchanger easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a device for reducing the inlet temperature of a high-temperature heat exchanger matched with a combustion furnace.
In order to achieve the purpose, the utility model designs a device for reducing the inlet temperature of a high-temperature heat exchanger matched with a combustion furnace. The device for reducing the inlet temperature of the high-temperature heat exchanger matched with the combustion furnace comprises the combustion furnace and the high-temperature gas heat exchanger, wherein high-temperature smoke of the combustion furnace is connected with the high-temperature gas heat exchanger through a pipeline, and low-temperature smoke of the combustion furnace is discharged through another pipeline.
Preferably, the device for reducing the inlet temperature of the high-temperature heat exchanger matched with the combustion furnace further comprises a high-temperature flue gas outlet end of the combustion furnace, which is connected with the air mixing box through a pipeline, an air door is arranged on the pipeline between the combustion furnace and the air mixing box for control, the outlet end of the air mixing box is connected with the high-temperature gas heat exchanger through a pipeline, a low-temperature flue gas outlet of the high-temperature heat exchanger and a low-temperature flue gas outlet of the combustion furnace are mixed through a pipeline, one part of the mixture is discharged through a chimney, the other part of the mixture is sent to a circulating fan, and the circulating fan is connected with the air mixing box through a pipeline.
Preferably, the device for reducing the inlet temperature of the high-temperature heat exchanger matched with the combustion furnace further comprises a temperature sensor TE101 arranged on a pipeline between the air mixing box and the high-temperature gas heat exchanger and used for adjusting the air volume of the circulating fan.
Preferably, the device for reducing the inlet temperature of the high-temperature heat exchanger matched with the combustion furnace further comprises a temperature sensor TE102 arranged at the clean hot air output section of the high-temperature gas heat exchanger and used for adjusting the opening degree of the air door.
Compared with the prior art, the utility model has the following advantages:
1. the heat exchange efficiency of the heat exchanger is not influenced while the high-temperature heat exchanger is not damaged due to high temperature;
2. the flue gas at the outlet of the combustion chamber is utilized, so that the environment is protected;
3. the energy consumption of the operation is not increased.
Drawings
Fig. 1 is a flow chart of the high temperature gas heat exchanger of the present invention for reducing inlet temperature.
1. The combustion furnace 2, the high-temperature gas heat exchanger 3, the mixed air box 4, the circulating fan 5, the air door 6, the temperature sensor TE1017, the temperature sensor TE1028, the high-temperature flue gas 9, the low-temperature flue gas 10, the mixed gas 11, the low-temperature clean air 12, the clean hot air 13, the exhaust flue gas 14 and the circulating air.
Detailed Description
The technical solutions adopted by the present invention are further described below with reference to the accompanying drawings so that those skilled in the art can better understand the present invention.
Referring to fig. 1, the present invention provides a device for reducing the inlet temperature of a high temperature heat exchanger matched with a combustion furnace, the device for reducing the inlet temperature of the high temperature heat exchanger matched with the combustion furnace structurally comprises a combustion furnace 1, a high temperature gas heat exchanger 2, a air mixing box 3, a circulating fan 4, an air door 5, a temperature sensor TE101 6, a temperature sensor TE102 7, wherein high temperature flue gas 8 of the combustion furnace 1 is connected with the high temperature gas heat exchanger 2 through a pipeline, and low temperature flue gas 9 of the combustion furnace 1 is discharged through another pipeline; the 8 high-temperature flue gas side pipeline is provided with a 5 air door and a 3 air mixing box, and a 6 temperature sensor TE101 is further arranged on a connecting pipeline of the 3 air mixing box and the 2 high-temperature gas heat exchanger; the inlet section of the 4-circulation fan mixes the flue gas discharged by the 13-high temperature gas heat exchanger 2 with the low temperature flue gas of the 9-low temperature flue gas of the 1-combustion furnace, and the other side of the 4-circulation fan is connected with the 3-mixing box through a pipeline; the 7-temperature sensor TE102 is installed on the 12-clean hot air pipeline section of the 2-high temperature gas heat exchanger.
As shown in fig. 1, in a specific using process, 9 low-temperature flue gas of a 1 combustion furnace is mixed with 13 exhaust flue gas of a 2 high-temperature gas heat exchanger through a pipeline, one part of the low-temperature flue gas is directly exhausted from a chimney, the other part of the low-temperature flue gas is sent into a 3 air mixing box through a 4 circulating fan, 8 high-temperature flue gas of the 1 combustion furnace also enters the 3 air mixing box through a 5 air door, the two mixed flue gases are directly subjected to heat exchange after being mixed, the mixed flue gas is changed into 10 mixed gas with lower temperature, and finally the mixed gas is sent into an inlet section of the 2 high-temperature gas heat exchanger, so that the purpose of ensuring that the high-temperature heat exchanger cannot be damaged due to high temperature is finally achieved, wherein the air volume of the 4 circulating fan can be automatically adjusted through frequency conversion according to the setting of a 6 temperature sensor TE101, and the opening degree of the 5 air door can be automatically adjusted according to a 7 temperature sensor TE102 on a 12 clean hot air position pipeline.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the present invention within the technical scope of the present invention, and the technical solutions and novel concepts according to the present invention should be added with the equivalent replacement or change.
Claims (4)
1. The utility model provides a reduce with fire supporting high temperature heat exchanger inlet temperature's of burning furnace device, including burning furnace and high temperature gas heat exchanger, the high temperature flue gas that fires burning furnace passes through pipe connection high temperature gas heat exchanger, and the low temperature flue gas that fires burning furnace discharges through another way pipeline, its characterized in that still includes circulating fan, and circulating fan mixes the low temperature exhanst gas outlet of high temperature gas heat exchanger and the low temperature exhanst gas outlet that fires burning furnace to after directly mixing with the high temperature flue gas that fires burning furnace, send to high temperature gas heat exchanger through the pipeline.
2. The apparatus as claimed in claim 1, wherein the high temperature flue gas outlet of the combustion furnace is connected to the air mixing box through a pipe, the pipe between the combustion furnace and the air mixing box is provided with a damper for controlling, the outlet of the air mixing box is connected to the high temperature gas heat exchanger through a pipe, the low temperature flue gas outlet of the high temperature gas heat exchanger is mixed with the low temperature flue gas outlet of the combustion furnace through a pipe, one part is discharged through a chimney, the other part is sent to the circulating fan, and the circulating fan is connected to the air mixing box through a pipe.
3. The apparatus for reducing the inlet temperature of a high temperature heat exchanger associated with a combustion furnace as set forth in claim 2, wherein the pipe between the air mixing box and the high temperature gas heat exchanger is provided with a temperature sensor TE101 for adjusting the air volume of the circulating fan.
4. The apparatus for reducing the inlet temperature of a high temperature heat exchanger associated with a combustion furnace as set forth in claim 1, wherein the high temperature gas heat exchanger is provided with a temperature sensor TE102 for adjusting the opening degree of the damper in the section for outputting clean hot air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220279980.3U CN216869244U (en) | 2022-02-11 | 2022-02-11 | Device for reducing inlet temperature of high-temperature heat exchanger matched with combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220279980.3U CN216869244U (en) | 2022-02-11 | 2022-02-11 | Device for reducing inlet temperature of high-temperature heat exchanger matched with combustion furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216869244U true CN216869244U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220279980.3U Active CN216869244U (en) | 2022-02-11 | 2022-02-11 | Device for reducing inlet temperature of high-temperature heat exchanger matched with combustion furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216869244U (en) |
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2022
- 2022-02-11 CN CN202220279980.3U patent/CN216869244U/en active Active
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