CN213686779U - Boiler blow-down water energy full recovery device - Google Patents
Boiler blow-down water energy full recovery device Download PDFInfo
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- CN213686779U CN213686779U CN202022827910.0U CN202022827910U CN213686779U CN 213686779 U CN213686779 U CN 213686779U CN 202022827910 U CN202022827910 U CN 202022827910U CN 213686779 U CN213686779 U CN 213686779U
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Abstract
The utility model relates to a boiler blow-down water energy full recovery device, which comprises a boiler steam drum, a buffering absorption tower, a low-pressure steam pipe network, a circulating main pipe, a condensate heat exchange pipe, a circulating component and a blow-down water trench, wherein the water outlet of the boiler steam drum is communicated with the water inlet pipeline of a continuous discharge flash tank, the gas outlet of the continuous discharge flash tank is communicated with the gas inlet of the low-pressure steam pipe network through a pipeline, the water outlet of the boiler steam drum and the water outlet of the continuous discharge flash tank are communicated with the water inlet pipeline of the low-pressure flash tank, the water outlet of the low-pressure flash tank is respectively communicated with the water inlet of the condensate heat exchange pipe and the water inlet pipeline of the blow-down water trench, the gas outlet of the low-pressure flash tank is communicated with the gas inlet pipeline of the buffering absorption tower, the water outlet of the circulating main pipe is respectively communicated with the water inlet of the buffering absorption tower and, the purpose of recovering the boiler blow-down water and the heat carried by the boiler blow-down water is achieved.
Description
Technical Field
The utility model relates to a boiler blow-down water field, concretely relates to boiler blow-down water energy recovery unit entirely.
Background
The 21 st century is entered, in order to implement the guidelines for the construction of an environment-friendly and resource-saving society. In the petrochemical industry, a boiler is usually used for producing a large amount of high-temperature and high-pressure steam to heat a medium, the improvement of the self energy efficiency is firstly realized, and the energy conservation and emission reduction are not only the requirements of the country on enterprises, but also an inevitable choice for the enterprises to pursue the maximization of the benefit. Aiming at the actual operation of the regular blowdown system of the boiler at present, a fixed-discharge flash tank generates a large amount of steam which is discharged into the atmosphere, so that the resource waste is caused, and therefore, the existing problems are urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the present invention is to provide a boiler blow-down water energy recovery device, which can recover boiler blow-down water and the heat carried thereby.
In order to achieve the purpose, the utility model relates to a boiler blow-down water energy full recovery device, which comprises a boiler steam drum, a continuous-row flash tank, a low-pressure flash tank, a buffer absorption tower, a low-pressure steam pipe network, a circulation main pipe, a condensate heat exchange pipe, a circulation assembly and a blow-down water drainage trench;
the water outlet of the boiler steam drum is communicated with the water inlet pipeline of the continuous discharge flash tank, and the air outlet of the continuous discharge flash tank is communicated with the air inlet of the low-pressure steam removal pipe network through a pipeline;
the water outlet of the boiler drum and the water outlet of the continuous discharge flash tank are communicated with a water inlet pipeline of the low-pressure flash tank, the water outlet of the low-pressure flash tank is respectively communicated with the water inlet of the condensate heat exchange pipe and the water inlet pipeline of the sewage drainage trench, and the gas outlet of the low-pressure flash tank is communicated with a gas inlet pipeline of the buffer absorption tower;
the water outlet of the circulation main pipe is respectively communicated with the water inlet of the buffering absorption tower and the water inlet pipeline of the condensate heat exchange pipe, and the water outlet of the condensate heat exchange pipe is communicated with the circulation assembly pipeline.
Further, the circulation main pipe is a demineralized water main pipe, and the circulation assembly is a brine deaerator.
Further, the circulation main pipe is a circulation water main pipe, and the circulation component is a water cooling tower.
Further, a steam-water separator is arranged in the low-pressure flash tank.
Further, a safety valve is arranged at the top of the low-pressure flash tank.
Furthermore, a filter is arranged in the condensate heat exchange tube.
Compared with the prior art, the utility model, its beneficial effect is:
under the action of the continuous discharge flash tank, part of continuous discharge sewage of the boiler drum is changed into evaporated steam and unevaporated waste hot water, the steam enters a low-pressure steam pipe network through a pipeline, and finally enters a heating pipeline of a resident household for heating through the low-pressure steam pipe network;
the continuous drainage sewage of the boiler steam drum and the unevaporated waste hot water in the continuous drainage flash tank enter the low-pressure flash tank through pipelines, evaporated steam and unevaporated waste hot water are formed under the action of the low-pressure flash evaporator, the evaporated steam enters the buffer absorption tower, then one path of liquid in the circulating mother pipe is led into a buffering absorption tower, the liquid in the buffering absorption tower is changed into hot liquid under the action of evaporated steam, the other path of liquid in the circulating mother pipe is led into a condensate heat exchange pipe, unevaporated waste hot water in a low-pressure flash evaporator simultaneously enters the condensate heat exchange pipe, the liquid in the circulating mother pipe and the unevaporated waste hot water in the low-pressure flash evaporator are subjected to heat exchange to form hot liquid, and the hot liquid of the condensate heat exchange pipe and the hot liquid of the buffer absorption tower jointly flow into the circulating assembly to realize the cyclic utilization in the circulating assembly;
the unevaporated waste hot water in the condensate heat exchange tube enters the sewage discharge trench after heat exchange, and the unevaporated waste hot water in the low-pressure flash evaporator also can enter the sewage discharge trench;
to sum up, the boiler blow-down water energy full recovery device can achieve the purpose of recovering boiler blow-down water and heat carried by the boiler blow-down water.
Drawings
FIG. 1 is a process flow diagram of the boiler blow-down water energy full recovery device of the utility model.
In the figure: 1. a boiler drum; 2. a connected flash tank; 3. a low pressure flash vessel; 31. a safety valve; 4. a buffer absorption tower; 5. removing to a low-pressure steam pipe network; 6. circulating the main pipe; 61. a demineralized water main pipe; 62. a main pipe for circulating water; 7. a condensate heat exchange pipe; 8. a circulation component; 81. removing oxygen from the brine; 82. a water cooling tower; 9. sewage is discharged to the trench.
Detailed Description
In order to explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following embodiments are described in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.
Referring to fig. 1, the present invention provides an embodiment:
the utility model provides a device for fully recovering the energy of the boiler blow-down water, which comprises a boiler steam drum 1, a continuous discharge flash tank 2, a low-pressure flash tank 3, a buffer absorption tower 4, a low-pressure steam pipe network 5, a circulation main pipe 6, a condensate heat exchange pipe 7, a circulation component 8 and a blow-down water drainage trench 9;
the water outlet of the boiler drum 1 is communicated with the water inlet pipeline of the continuous discharge flash tank 2, and the gas outlet of the continuous discharge flash tank 2 is communicated with the gas inlet of the low-pressure steam removal pipe network 5 through a pipeline;
the water outlet of the boiler drum 1 and the water outlet of the continuous discharge flash tank 2 are communicated with the water inlet pipeline of the low-pressure flash tank 3, the water outlet of the low-pressure flash tank 3 is respectively communicated with the water inlet of the condensate heat exchange tube 7 and the water inlet pipeline of the sewage drainage trench 9, and the air outlet of the low-pressure flash tank 3 is communicated with the air inlet pipeline of the buffer absorption tower 4;
the water outlet of the circulation main pipe 6 is respectively communicated with the water inlet of the buffering absorption tower 4 and the water inlet pipeline of the condensate heat exchange pipe 7, and the water outlet of the condensate heat exchange pipe 7 is communicated with the circulation assembly 8 through a pipeline;
under the action of the continuous discharge expansion tank 2, part of continuous discharge sewage of the boiler steam drum 1 is changed into evaporated steam and unevaporated waste hot water, the steam enters a low-pressure steam pipe network 5 through a pipeline, and finally enters a heating pipeline of a resident household for heating through the low-pressure steam pipe network 5;
the continuous drainage sewage of the boiler steam drum 1 and the unevaporated waste hot water in the continuous drainage flash tank 2 enter the low-pressure flash tank 3 through pipelines, evaporated steam and unevaporated waste hot water are also formed under the action of the low-pressure flash evaporator 3, the evaporated steam enters the buffer absorption tower 4, then one path of liquid in the circulation main pipe 6 is led into the buffering absorption tower 4, the liquid in the buffering absorption tower 4 is changed into hot liquid under the action of the evaporated steam, the other path of liquid in the circulation main pipe 6 is led into the condensate heat exchange pipe 7, the unevaporated waste hot water in the low-pressure flash tank 3 enters the condensate heat exchange pipe 7 at the same time, the liquid in the circulation main pipe 6 and the unvaporized waste hot water in the low-pressure flash evaporator 3 exchange heat to form hot liquid, and the hot liquid in the condensate heat exchange pipe 7 and the hot liquid in the buffer absorption tower 4 flow into the circulation assembly 8 together to realize the cyclic utilization in the circulation assembly 8;
the unevaporated waste hot water in the condensate heat exchange tube 7 enters the sewage discharge trench 9 after heat exchange, and the unevaporated waste hot water in the low-pressure flash evaporator 3 also can enter the sewage discharge trench 9;
to sum up, the boiler blow-down water energy full recovery device can achieve the purpose of recovering boiler blow-down water and heat carried by the boiler blow-down water.
Further, the circulation main pipe 6 is a demineralized water main pipe 61, and the circulation component 8 is a brine removing deaerator 81;
the purpose of supplementing the brine and removing the hot brine in the deaerator 81 is achieved.
Further, the circulation main pipe 6 is a circulation main pipe 62, and the circulation component 8 is a water cooling tower 82;
serving the purpose of heating the water in the water cooling tower 82.
Further, a steam-water separator is arranged in the low-pressure flash evaporator 3;
the water content of the secondary steam is reduced.
Further, a safety valve 31 is arranged at the top of the low-pressure flash tank 3;
when the buffer absorption tower 4 is in trouble shooting, the flash evaporation dead steam can be discharged on site.
Further, a filter is arranged in the condensate heat exchange tube 7;
the slag is prevented from blocking the condensate heat exchange tube 7, and the heat exchange effect is prevented from being influenced.
Claims (6)
1. The utility model provides a boiler blow-down water energy recovery unit entirely which characterized in that: the system comprises a boiler steam drum (1), a continuous-discharge flash tank (2), a low-pressure flash tank (3), a buffering absorption tower (4), a low-pressure steam removal pipe network (5), a circulation main pipe (6), a condensate heat exchange pipe (7), a circulation assembly (8) and a sewage removal trench (9);
the water outlet of the boiler steam drum (1) is communicated with the water inlet pipeline of the continuous discharge flash tank (2), and the air outlet of the continuous discharge flash tank (2) is communicated with the air inlet of the low-pressure steam removal pipe network (5) through a pipeline;
the water outlet of the boiler steam drum (1) and the water outlet of the continuous discharge flash tank (2) are communicated with the water inlet pipeline of the low-pressure flash tank (3), the water outlet of the low-pressure flash tank (3) is respectively communicated with the water inlet of the condensate heat exchange pipe (7) and the water inlet pipeline of the sewage drainage trench (9), and the air outlet of the low-pressure flash tank (3) is communicated with the air inlet pipeline of the buffer absorption tower (4);
the water outlet of the circulation main pipe (6) is respectively communicated with the water inlet of the buffering absorption tower (4) and the water inlet pipeline of the condensate heat exchange pipe (7), and the water outlet of the condensate heat exchange pipe (7) is communicated with the circulation assembly (8) through a pipeline.
2. The boiler blow-down water energy total recovery device according to claim 1, characterized in that: the circulation main pipe (6) is a demineralized water main pipe (61), and the circulation assembly (8) is a brine deaerator (81).
3. The boiler blow-down water energy total recovery device according to claim 1, characterized in that: the circulation main pipe (6) is a circulation water main pipe (62), and the circulation component (8) is a water cooling tower (82).
4. The boiler blow-down water energy total recovery device according to claim 1, characterized in that: a steam-water separator is arranged in the low-pressure flash tank (3).
5. The boiler blow-down water energy total recovery device according to claim 1, characterized in that: and a safety valve (31) is arranged at the top of the low-pressure flash tank (3).
6. The boiler blow-down water energy total recovery device according to claim 1, characterized in that: a filter is arranged in the condensate heat exchange tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022827910.0U CN213686779U (en) | 2020-11-30 | 2020-11-30 | Boiler blow-down water energy full recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022827910.0U CN213686779U (en) | 2020-11-30 | 2020-11-30 | Boiler blow-down water energy full recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213686779U true CN213686779U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022827910.0U Active CN213686779U (en) | 2020-11-30 | 2020-11-30 | Boiler blow-down water energy full recovery device |
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| Country | Link |
|---|---|
| CN (1) | CN213686779U (en) |
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2020
- 2020-11-30 CN CN202022827910.0U patent/CN213686779U/en active Active
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