Heat tracing system of waste gas incineration device
By combining steam tracing, steam condensate tracing, and electric tracing into a heat tracing system for the waste gas incineration unit, the problems of easy freezing and low heat utilization in low-temperature environments have been solved, achieving a highly efficient and stable heat tracing effect.
Patent Information
- Application Number
- CN202423105500.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing waste gas incineration devices are prone to freezing in low-temperature environments, have low steam heat utilization rates, and the steam tracing system is not stable enough for instruments and pipelines.
A heat tracing system for a waste gas incineration device was designed, combining three methods: steam heat tracing, steam condensate heat tracing, and electric heat tracing. Switching between different heat tracing methods is achieved by switching valves, ensuring that the optimal heat tracing method is selected under different operating conditions, improving the utilization rate of steam heat and ensuring the stable operation of instruments and pipelines.
It achieves efficient heat tracing for the waste gas incineration unit under different operating conditions, improves the utilization rate of steam heat, ensures the stability of instruments and pipelines, and avoids problems such as condensate vaporization and freezing.
Smart Images
Figure CN223709671U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to chemical equipment heat tracing system technical field, concretely relates to a waste gas incinerator heat tracing system. BACKGROUND
[0002] As a kind of environmental protection equipment, waste gas incinerator plays an important role in environmental protection and industrial production, its main function is to convert harmful waste gas into harmless substance by high-temperature incineration, so as to achieve the purpose of reducing pollution and protecting environment, and the waste heat boiler matched with it can make full use of the waste heat of high-temperature flue gas of incinerator, produce steam as by-product, and then achieve comprehensive utilization of resources.
[0003] As a waste gas incineration device, its safety performance must be guaranteed, and the normal operation of the boiler should be guaranteed first to prevent the leakage of toxic and harmful gas;In addition, the safety of waste heat boiler, especially the liquid level and pressure of steam drum, should be guaranteed. In order to ensure the stable operation of waste gas incineration device, especially in winter, the pipelines and instruments of the device are often insulated, and steam tracing is widely used due to its low energy consumption, but the condensate generated by temperature difference of steam tracing is often not utilized.
[0004] CN221278723U discloses a steam condensate water heat tracing device, which comprises an insulation layer, a pipeline needing heat tracing and a steam condensate water pipeline, the insulation layer is a hollow pipe, the pipeline needing heat tracing and the steam condensate water pipeline are laid in the insulation layer, the outer surfaces of the pipeline needing heat tracing and the steam condensate water pipeline are tangent to the inner surface of the insulation layer, and the outer surfaces of the pipeline needing heat tracing and the steam condensate water pipeline are tangent. The patent makes the heat of steam condensate water with large pipe diameter concentrate on the pipeline needing heat tracing with small pipe diameter, and the pipeline needing heat tracing is heated without steam tracing or electric tracing, which can fully utilize the heat of steam condensate water and make the pipeline needing heat tracing meet the process temperature, but the main structure is hollow pipe, which is suitable for devices with regular structure such as pipeline, and the utilization rate of steam heat is low.
[0005] Therefore, it is necessary to design a heat tracing system, which can heat the instruments, pipelines prone to freezing and equipment of waste gas incineration device to ensure the stable operation of the device in winter. UTILITY MODEL CONTENT
[0006] The utility model solves the above-mentioned defects of prior art, provides waste gas incineration device heat tracing system, which heats waste gas incineration device by using steam tracing, steam condensate tracing and electric tracing, combines different heat tracing methods with device, realizes the selection and switching of different heat tracing forms in different situations, improves the utilization rate of steam heat, and ensures the stable operation of each instrument device.
[0007] The utility model discloses a waste gas incineration device heat tracing system, including steam distribution disc, steam distribution disc with steam pipeline connection, be provided with switching valve A on steam pipeline, steam distribution disc with instrument unit connection, instrument unit is connected with steam condensate collection tray through no.
[0008] Preferably, the steam distribution disc is connected with the pipeline unit, the pipeline unit is connected with the steam inner tube through the second steam pipeline, the second steam pipeline is provided with a steam switching valve B, the pipeline unit is connected with the jacket through the second condensate pipeline, and the second condensate pipeline is provided with a condensate switching valve B.
[0009] Preferably, the pipeline unit is connected with the electric heat tracing operation disc, and the electric heat tracing operation disc is provided with a pipeline connected with the instrument unit.
[0010] Preferably, the first steam pipeline is provided with a steam switching valve A, and the first condensate pipeline is provided with a condensate switching valve A.
[0011] Preferably, the steam condensate collection tank is provided with a blowdown pipeline at the bottom, and the steam condensate collection tank is provided with an upstream device steam condensate pipeline at the top.
[0012] Preferably, the steam pipeline is provided with a pipeline connected with the top of the steam condensate collection tank.
[0013] Preferably, the steam condensate delivery pump is provided with a pipeline connected with a downstream device.
[0014] Preferably, the steam condensate delivery pump is provided with a pipeline connected with a downstream device.
[0015] Specific, the waste incineration device heat tracing system, important, winter easy to freeze instrument, pipeline, equipment and other heat tracing, mainly divided into three ways of electric heat tracing, steam heat tracing, steam condensate heat tracing, in steam heat tracing pipe outside 50MM insulation cotton, after laying electric heat tracing belt, outside again 50MM insulation cotton, the outermost package aluminum skin. Under normal conditions, priority is given to steam condensate heat tracing, when using steam condensate heat tracing, switching valve A is closed, and the steam condensate of other devices is collected to the steam condensate collection tank through the steam condensate pipeline of the upstream device, and is transported to the steam distribution disc through the steam condensate pump, and the condensate is transported to the instrument unit and the pipeline unit through the steam distribution disc. The devices are heat traced, and after the heat tracing points, the condensate is transported to the steam condensate collection disc through the first condensate pipeline and the second condensate pipeline, and is finally transported back to the steam condensate collection tank for recycling. The 0.3MPa steam from the steam pipeline continuously insulates the steam condensate collection pipe, so that the temperature of the heat tracing is ensured. In the steam condensate heat tracing process, switching valve B, condensate switching valve A and condensate switching valve B are opened, and the remaining valves are closed. When the steam condensate temperature is too high and the instrument unit part of the device is prone to condensate gasification, all valves are closed, and the electric heat tracing operation disc is opened to heat trace the instrument unit and the pipeline unit, so that the stability of the instrument is ensured. When in extremely cold conditions, the condensate has the risk of freezing, at this time, steam heat tracing is adopted, the 0.3MPa steam from the steam pipeline is transported to the steam distribution disc through switching valve A, then the instrument unit and the pipeline unit are heat traced by steam, and then the steam is transported to the steam condensate collection disc through the steam pipeline, and then is transported to the steam condensate collection tank to condense into steam condensate, which is used for downstream devices requiring steam condensate heat tracing.
[0016] Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts three ways of steam heat tracing, steam condensate heat tracing and electric heat tracing to heat trace the device, the pipelines of steam heat tracing and steam condensate heat tracing are designed, the timely switching of the two heat tracing ways is realized, and the full use of steam heat is realized. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structure schematic diagram of waste incineration device heat tracing system of the utility model.
[0018] In the figure: 1, steam distribution disc; 2, steam pipeline; 3, switching valve A; 4, electric heat tracing operation disc; 5, instrument unit; 6, steam switching valve A; 7, upstream device steam condensate pipeline; 8, steam condensate collection disc; 9, condensate switching valve A; 10, blowdown pipeline; 11, condensate switching valve B; 12, steam condensate collection tank; 13, steam switching valve B; 14, pipeline unit; 15, steam condensate delivery pump; 16, downstream device; 17, switching valve B; 18, first steam pipeline; 19, first condensate pipeline; 20, second steam pipeline; 21, second condensate pipeline; 801, jacket; 802, steam inner tube. DETAILED DESCRIPTION
[0019] The utility model will be further explained in connection with the drawings.
[0020] As Figure 1 shown, the waste gas incineration device heat tracing system, including steam distribution disc 1 and steam condensate collection disc 8, steam condensate collection disc 8 includes steam inner tube 802 and jacket 801 two parts, steam distribution disc 1 is connected with instrument unit 5, instrument unit 5 is connected with steam inner tube 802 through first steam pipeline 18, instrument unit 5 is connected with jacket 801 through first condensate pipeline 19, steam inner tube 802 and jacket 801 all are provided with the pipeline that is connected with steam condensate collection tank 12, steam condensate collection tank 12 is connected with steam condensate delivery pump 15, steam condensate delivery pump 15 is connected with steam distribution disc 1.
[0021] Steam distribution disc 1 is connected with pipeline unit 14, and pipeline unit 14 is connected with steam inner tube 802 through second steam pipeline 20, and second steam pipeline 20 is provided with steam switching valve B 13, and pipeline unit 14 is connected with jacket 801 through second condensate pipeline 21, and second condensate pipeline 21 is provided with condensate switching valve B 11.
[0022] Pipeline unit 14 is connected with electric heat tracing operation disc 4, and electric heat tracing operation disc 4 is provided with the pipeline that is connected with instrument unit 5.
[0023] First steam pipeline 18 is provided with steam switching valve A 6, and first condensate pipeline 19 is provided with condensate switching valve A 9.
[0024] Steam condensate collection tank 12 bottom is provided with blowdown pipeline 10, and steam condensate collection tank 12 top is provided with upstream device steam condensate pipeline 7.
[0025] Steam distribution disc 1 is connected with steam pipeline 2, and steam pipeline 2 is provided with switching valve A 3, and steam pipeline 2 is provided with the pipeline that is connected with steam condensate collection tank 12 top.
[0026] The steam condensate delivery pump 15 is provided with a pipeline connected with the downstream device 16.
[0027] The steam condensate delivery pump 15 is provided with a switching valve B17 on the pipeline connected with the steam distribution disc 1.
[0028] Specifically, the waste gas incineration device heat tracing system performs heat tracing on important instruments, pipelines, equipment and the like prone to freezing in winter, and mainly includes three modes of electric heat tracing, steam heat tracing and steam condensate heat tracing. The steam heat tracing pipe is wrapped with 50MM insulation cotton, and then an electric heat tracing belt is laid, and then 50MM insulation cotton is wrapped outside, and finally aluminum skin is wrapped outside. Under normal conditions, steam condensate heat tracing is preferred. When steam condensate heat tracing is used, switching valve A3 is closed, and steam condensate of other devices is collected to the steam condensate collection tank 12 through the upstream steam condensate pipeline 7, and then delivered to the steam distribution disc 1 by the steam condensate delivery pump 15. The condensate is delivered to the instrument unit 5 and the pipeline unit 14 through the steam distribution disc 1 for heat tracing of each device. After passing through each heat tracing point, the condensate is delivered to the steam condensate collection disc 8 through the first condensate pipeline 19 and the second condensate pipeline 21, and finally delivered back to the steam condensate collection tank 12 for recycling. The 0.3MPa steam from the steam pipeline 2 continuously insulates the steam condensate collection tank 12 to ensure the temperature of heat tracing. During steam condensate heat tracing, switching valve B17, condensate switching valve A9 and condensate switching valve B11 are opened, and the remaining valves are closed. When the steam condensate temperature is too high and easy to cause condensate gasification of part of the instrument unit 5, all valves are closed, and the electric heat tracing operation disc 4 is opened to perform electric heat tracing on the instrument unit 5 and the pipeline unit 14 to ensure the stability of the instrument. When in extremely cold conditions, the condensate has the risk of freezing. At this time, steam heat tracing is used. The 0.3MPa steam from the steam pipeline 2 is delivered to the steam distribution disc 1 through switching valve A3, and then the instrument unit 5 and the pipeline unit 14 are heat traced by steam. Then the steam is delivered to the steam condensate collection disc 8 through the first steam pipeline 18 and the second steam pipeline 20, and then delivered to the steam condensate collection tank 12 to condense the steam condensate for use by the downstream device 16 requiring steam condensate heat tracing.
Claims
1. A heat tracing system for a waste gas incineration device, characterized in that, The system includes a steam distribution plate (1) and a steam condensate collection plate (8). The steam condensate collection plate (8) consists of a steam inner pipe (802) and a jacket (801). The steam distribution plate (1) is connected to an instrument unit (5). The instrument unit (5) is connected to the steam inner pipe (802) via a first steam pipeline (18). The instrument unit (5) is connected to the jacket (801) via a first condensate pipeline (19). Both the steam inner pipe (802) and the jacket (801) are equipped with pipelines connected to a steam condensate collection tank (12). The steam condensate collection tank (12) is connected to a steam condensate transfer pump (15). The steam condensate transfer pump (15) is connected to the steam distribution plate (1).
2. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, The steam distribution plate (1) is connected to the pipeline unit (14), the pipeline unit (14) is connected to the steam inner pipe (802) through the second steam pipeline (20), the second steam pipeline (20) is equipped with a steam switching valve B (13), the pipeline unit (14) is connected to the jacket (801) through the second condensate pipeline (21), the second condensate pipeline (21) is equipped with a condensate switching valve B (11).
3. The heat tracing system for the waste gas incineration device according to claim 2, characterized in that, The pipeline unit (14) is connected to the electric heat tracing control panel (4), which is provided with a pipeline connected to the instrument unit (5).
4. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, A steam switching valve A (6) is installed on the No. 1 steam pipeline (18), and a condensate switching valve A (9) is installed on the No. 1 condensate pipeline (19).
5. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, The steam condensate collection tank (12) is equipped with a sewage discharge pipeline (10) at the bottom and an upstream device steam condensate pipeline (7) at the top.
6. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, The steam distribution plate (1) is connected to the steam pipeline (2), and a switching valve A (3) is installed on the steam pipeline (2). A pipeline connected to the top of the steam condensate collection tank (12) is installed on the steam pipeline (2).
7. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, The steam condensate transfer pump (15) is provided with a pipeline connected to the downstream device (16).
8. The heat tracing system for the waste gas incineration device according to claim 1, characterized in that, A switching valve B (17) is installed on the pipeline connecting the steam condensate transfer pump (15) and the steam distribution plate (1).