CN218510866U - Bypass system for improving temperature of smoke at outlet of coal economizer of waste incineration boiler - Google Patents
Bypass system for improving temperature of smoke at outlet of coal economizer of waste incineration boiler Download PDFInfo
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- CN218510866U CN218510866U CN202222875237.7U CN202222875237U CN218510866U CN 218510866 U CN218510866 U CN 218510866U CN 202222875237 U CN202222875237 U CN 202222875237U CN 218510866 U CN218510866 U CN 218510866U
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- collection case
- economizer
- bypass
- waste incineration
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Abstract
The utility model relates to a waste incineration boiler technical field specifically is a bypass system for improving waste incineration boiler economizer export smoke temperature, and its simple structure does not influence the steam pocket and overhauls, and it includes the economizer, economizer upper portion is connected export collection case, sub-unit connection import collection case, the female pipe of water supply is connected to import collection case, its characterized in that, install the three-way control valve on the female pipe of water supply, the bypass exit linkage bypass pipeline of three-way control valve, the bypass pipeline with the import that mixes the collection case is all connected to export collection case, mix the exit linkage steam pocket of collection case.
Description
Technical Field
The utility model relates to a msw incineration boiler technical field specifically is a bypass system for improving msw incineration boiler economizer export gas temperature.
Background
In the existing waste incineration boiler system, due to the instability of the heat value of waste, the load fluctuation of the waste incineration boiler is large in the operation process, when the boiler operates at low load, the temperature of the flue gas at the outlet of the economizer is low, and the temperature requirement required by tail flue gas treatment cannot be met, and the purpose of increasing the temperature of the flue gas at the outlet of the economizer is usually achieved by increasing the water supply temperature of the economizer. In the method, the heater is arranged in the steam drum, so that the internal space of the steam drum is narrow and small, and the overhaul of the steam drum is influenced.
Disclosure of Invention
In order to solve the problem that the current increase heater influences the steam pocket inner space, is not convenient for overhaul, the utility model provides a bypass system for improving waste incineration boiler economizer export smoke temperature, its simple structure does not influence the steam pocket and overhauls.
The technical scheme is as follows: the utility model provides a bypass system for improving msw incineration boiler economizer export smoke temperature, its includes the economizer, export collection case, sub-unit connection import collection case are connected on economizer upper portion, female pipe of import collection case connection feedwater, a serial communication port, install the three-way control valve on the female pipe of feedwater, the bypass exit linkage by-pass line of three-way control valve, by-pass line with the import that mixes the collection case is all connected to export collection case, mix the exit linkage steam pocket of collection case.
The mixing collection box is further characterized by comprising an external sleeve, a porous pipe is arranged in the external sleeve, one end of the porous pipe penetrates through the side wall of the external sleeve and is connected with the bypass pipeline, one end of the external sleeve is connected with the outlet collection box, the other end of the external sleeve is connected with the steam pocket, and meshes are formed in the pipe wall of the porous pipe;
a fixing plate is arranged between the porous pipe and the inner wall of the outer sleeve;
the bypass pipeline is provided with an air bleed pipeline and a drain pipeline, an air bleed valve is installed on the air bleed pipeline, and a drain valve is installed on the drain pipeline.
After the utility model is adopted, the three-way regulating valve is arranged, the water supply in the water supply main pipe enters the inlet collecting box of the economizer all the way, and the water supply enters the mixing collecting box together with the outlet collecting box of the economizer after the water supply main pipe is connected with the bypass pipeline all the way, and finally enters the steam pocket, and the water inflow of the two ways can be regulated through the three-way regulating valve, so that the aim of improving the smoke temperature at the outlet of the economizer is fulfilled; furthermore, the porous pipe in the mixing header can ensure that the two paths of inlet water are mixed more uniformly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the mixing header.
Detailed Description
Referring to fig. 1 and 2, the bypass system for improving the smoke temperature at the outlet of the economizer of the waste incineration boiler comprises an economizer 1, wherein the upper part of the economizer 1 is connected with an outlet header 2, the lower part of the economizer is connected with an inlet header 3, the inlet header 3 is connected with a water supply main pipe 4, an electric three-way regulating valve 5 is installed on the water supply main pipe 4, a bypass outlet of the three-way regulating valve 5 is connected with a bypass pipeline 6, the bypass pipeline 6 and the outlet header 2 are both connected with an inlet of a mixing header 7, an outlet of the mixing header 7 is connected with a steam pocket 8, an exhaust valve 9 and a drain valve 10 are arranged on the bypass pipeline 6, the drain valve 10 is arranged at the lowest point, and the exhaust valve 9 is arranged at the highest point.
The mixing header 7 comprises an external sleeve 11, a perforated pipe 12 is arranged in the external sleeve 11, one end of the perforated pipe 12 penetrates through the side wall of the external sleeve 11 and is connected with the bypass pipeline 6, one end of the external sleeve 11 is connected with the outlet header 2, the other end of the external sleeve 11 is connected with the steam pocket 8, and the pipe wall of the perforated pipe 12 is provided with meshes 13; a fixing plate 14 is arranged between the porous pipe 12 and the inner wall of the outer sleeve 13.
Under the normal working state, the main path of the electric three-way regulating valve 5 is fully opened, the bypass is closed, and all the supplied water enters the economizer 1 for heat exchange; when the boiler load is too low, the three-way regulating valve 5 is regulated to reduce the opening degree of the main path valve and increase the opening degree of the bypass, so that part of feed water is directly fed into the mixing header 7, and the water quantity entering the economizer to exchange heat with flue gas is reduced, thereby improving the flue gas temperature. The heater in the steam drum is cancelled, the manufacturing cost is reduced, and the steam drum overhauling space is increased.
Claims (4)
1. The utility model provides a bypass system for improving waste incineration boiler economizer export smoke temperature, its includes the economizer, export collection case, sub-unit connection import collection case are connected on economizer upper portion, female pipe of feedwater is connected to the import collection case, a serial communication port, install the tee bend governing valve on the female pipe of feedwater, the bypass exit linkage by-pass line of tee bend governing valve, by-pass line with the import that mixes the collection case is all connected to export collection case, the exit linkage steam pocket that mixes the collection case.
2. The bypass system for increasing the temperature of the flue gas at the outlet of the coal economizer of the waste incineration boiler as claimed in claim 1, wherein the mixing header comprises an outer sleeve, a perforated pipe is arranged in the outer sleeve, one end of the perforated pipe penetrates through the side wall of the outer sleeve and is connected with the bypass pipeline, one end of the outer sleeve is connected with the outlet header, the other end of the outer sleeve is connected with the steam pocket, and the pipe wall of the perforated pipe is provided with meshes.
3. The bypass system for increasing the temperature of the flue gas at the outlet of the coal economizer of a waste incineration boiler as claimed in claim 2, wherein a fixing plate is arranged between the perforated pipe and the inner wall of the outer sleeve.
4. The bypass system for increasing the temperature of the flue gas at the outlet of the coal economizer of a waste incineration boiler according to claim 1, wherein an air release pipeline and a drain pipeline are arranged on the bypass pipeline, an air release valve is arranged on the air release pipeline, and a drain valve is arranged on the drain pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222875237.7U CN218510866U (en) | 2022-10-31 | 2022-10-31 | Bypass system for improving temperature of smoke at outlet of coal economizer of waste incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222875237.7U CN218510866U (en) | 2022-10-31 | 2022-10-31 | Bypass system for improving temperature of smoke at outlet of coal economizer of waste incineration boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218510866U true CN218510866U (en) | 2023-02-21 |
Family
ID=85219043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222875237.7U Active CN218510866U (en) | 2022-10-31 | 2022-10-31 | Bypass system for improving temperature of smoke at outlet of coal economizer of waste incineration boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218510866U (en) |
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2022
- 2022-10-31 CN CN202222875237.7U patent/CN218510866U/en active Active
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