CN219264258U

CN219264258U - Boiler exhaust water waste heat utilization device

Info

Publication number: CN219264258U
Application number: CN202223216258.4U
Authority: CN
Inventors: 秦岭; 宋博; 魏晓明; 刘幼幼; 程元舒; 汪元弘; 蔡葵
Original assignee: China Haisum Engineering Co Ltd
Current assignee: China Haisum Engineering Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-06-27
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a boiler sewage waste heat utilization device, which comprises a sewage water tank for collecting sewage, wherein the top of the sewage water tank is provided with a water inlet pipe, and the side surface of the sewage water tank is provided with a water outlet pipe; a coil is arranged in the sewage water tank, the upper end of the coil is communicated with the adding water tank through a liquid return pipe, the lower end of the coil is connected with the inlet end of a water pump outside the sewage water tank through a liquid outlet pipe, and the outlet end of the water pump is communicated with a liquid inlet pipe of the adding water tank; one side of the top of the adding water tank, which is provided with the adding pipe adding water tank, is provided with an adding liquid pipe. The utility model has simple structure, and under the cooperation of the structures of the water pump, the coil pipe, the liquid outlet pipe and the like, the self temperature of the sewage is utilized to heat the water supply, so that the heat of the sewage of the boiler can be recovered, the temperature of the sewage is reduced, the cooling water required by the cooling of the sewage is reduced, and the water resource is saved; the temperature of water supplementing can be improved, the consumption of heating steam of the deaerator is reduced, and energy is saved.

Description

Boiler exhaust water waste heat utilization device

Technical Field

The utility model relates to a boiler exhaust water waste heat utilization device, and belongs to the technical field of energy conservation of thermal power plants.

Background

In a steam-water system of a thermal power plant, the sewage of a boiler is waste water with higher temperature, generally the saturation temperature under the pressure of a boiler drum, one 90t/h,5.4MPa (a) and 485 ℃ boiler, the sewage temperature is about 270 ℃, the sewage of the boiler is generally discharged through a sewage discharge cooling tank, the sewage needs to be mixed with tap water for cooling, and water resources are greatly wasted; the pipeline for conveying steam and condensed water is required to be matched with a plurality of valves and connecting joints, so that the phenomena of running, overflowing, dripping, leaking and the like are inevitably generated, the phenomena of running, overflowing, dripping, leaking and the like are more or less caused, water is required to be continuously supplemented into the system, however, normal-temperature desalted water supplementing water is usually directly added into the system in the prior art, and is supplemented into an deoxidizing water tank in general, the water temperature of a general large-cyclone film type thermal deoxidizer is about 104 ℃, so that the normal-temperature supplementing water and the water in the deoxidizing water tank have larger temperature difference, the heating steam consumption of the deoxidizer is increased, and the energy is wasted.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the utility model provides a boiler blowdown waste heat utilization device, it can the heat of recovery boiler blowdown, reduces the temperature of blowdown, reduces the required cooling water yield of blowdown cooling pond cooling, can improve the temperature of moisturizing simultaneously, reduces the deaerator heating steam consumption.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the boiler sewage waste heat utilization device comprises a sewage water tank for collecting sewage, wherein the top of the sewage water tank is provided with a water inlet pipe, and the side surface of the sewage water tank is provided with a water outlet pipe; a coil is arranged in the sewage water tank, the upper end of the coil is communicated with the adding water tank through a liquid return pipe, the lower end of the coil is connected with the inlet end of a water pump outside the sewage water tank through a liquid outlet pipe, and the outlet end of the water pump is communicated with a liquid inlet pipe of the adding water tank; the top of the adding water tank is provided with an adding pipe; an additive liquid pipe is arranged on one side of the additive water tank.

Preferably, flanges are arranged at the top end of the water inlet pipe and the tail end of the water outlet pipe.

Preferably, the coil is secured within the waste water tank by a mounting post.

More preferably, the mounting posts are symmetrically arranged on the left side and the right side of the coil pipe, and the spacing between the adjacent mounting posts is the same.

Preferably, an exhaust valve is arranged at the top of the sewage draining water tank.

Preferably, the bottom of the sewage draining water tank is provided with supporting legs.

Preferably, the water pump is fixedly connected with the sewage draining water tank through a supporting plate at the bottom of the water pump.

Preferably, the outside of the adding water tank is wrapped with heat preservation cotton.

Preferably, the bottom of the adding water tank is fixed on the bottom plate through a supporting column.

According to the utility model, the water inlet pipe of the sewage draining tank is communicated with the sewage draining pipeline of the boiler, the water outlet pipe is communicated with the pipeline of the sewage draining cooling pool, so that the sewage draining of the boiler can be conveyed into the sewage draining water tank through the water inlet pipe and into the sewage draining cooling pool through the water outlet pipe, water is added into the water adding tank through the water adding pipe, the water pump can extract water in the water adding tank through the water inlet pipe and convey the water into the coil pipe through the water outlet pipe, the high-temperature sewage can transfer heat to the water in the coil pipe through the coil pipe, the heated water is conveyed to the water return pipe, and the temperature of the water can be increased by repeatedly circulating the water; according to the utility model, the heat-insulating cotton additionally arranged on the outer layer of the water tank can insulate the water in the water tank, so that the influence of the external temperature on the water in the water tank is reduced, and when water needs to be supplemented to the steam-water system, the heated water is supplemented to the steam-water system through the additional liquid pipe.

The utility model can recover the heat of the sewage of the boiler, reduce the temperature of the sewage, reduce the cooling water quantity required by the cooling of the sewage and save water resources; the temperature of water supplementing can be improved, the consumption of heating steam of the deaerator is reduced, and energy is saved.

Compared with the prior art, the utility model has the following beneficial effects:

1. the temperature of the sewage is utilized to heat the water replenishing, the heat of the sewage discharged by the boiler is recovered, the temperature of the water replenishing is improved, the heating steam consumption of the deaerator is reduced, and the energy is saved.

2. The temperature of the sewage is reduced, the cooling water consumption of the sewage discharging cooling pool is reduced, and water resources are saved.

Drawings

FIG. 1 is a perspective view of a boiler blow-down water waste heat utilization device provided by the utility model;

FIG. 2 is a front view of the boiler blow-down water waste heat utilization device provided by the utility model;

fig. 3 is a perspective view of the boiler blow-down water waste heat utilization device provided by the utility model.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Examples

As shown in fig. 1-3, the boiler sewage waste heat utilization device provided by the utility model comprises a sewage water tank 1, wherein a coil pipe 20 is fixedly arranged in the sewage water tank 1, a supporting plate 7 is welded at one side of the bottom of the sewage water tank 1, a water pump 9 is fixedly arranged at the top of the supporting plate 7, a liquid inlet and a liquid outlet of the water pump 9 are respectively connected with a liquid inlet pipe 8 and a liquid outlet pipe 10 in a threaded manner, one end of the liquid outlet pipe 10 penetrates through the sewage water tank 1 and is fixedly connected with one end of the coil pipe 20, the liquid outlet pipe 10 is communicated with the coil pipe 20, an adding water tank 17 is arranged at one side of the sewage water tank 1, and the top of the adding water tank 17 is provided with and communicated with an adding pipe 15; one end of the liquid inlet pipe 8 penetrates through the adding water tank 17 and extends into the adding water tank 17, one end of the coil pipe 20, which is far away from the liquid outlet pipe 10, is fixedly connected with the liquid return pipe 14, and one end of the liquid return pipe 14 penetrates through the sewage water tank 1 and the adding water tank 17 respectively and is communicated with the adding water tank 17. An addition pipe 11 is provided on one side of the addition tank 17, and when water is required to be added to the steam-water system, the heated water is added to the steam-water system through the addition pipe 11.

The utility model has simple structure, and under the cooperation of the structures of the water pump 9, the coil pipe 20, the liquid outlet pipe 10 and the like, the temperature of the sewage is utilized to heat the water, so that the temperature of the sewage can be reduced, and the temperature of the water can be improved.

In the device, a plurality of equidistant mounting columns 21 are fixedly arranged on two sides of the coil 20, one end of each mounting column 21, far away from the coil 20, is welded with the inner wall of the sewage water tank 1, a third through hole and a fourth through hole are respectively formed in the top inner wall and the bottom inner wall of the sewage water tank 1, a water inlet pipe 2 and a water outlet pipe 3 are respectively welded on the inner wall of the third through hole and the inner wall of the fourth through hole, a flange 4 is respectively welded on the top of the water inlet pipe 2 and the bottom of the water outlet pipe 3, four supporting legs 6 are symmetrically welded on the bottom of the sewage water tank 1, four supporting columns 18 are symmetrically welded on the bottom of the additive water tank 17, the same bottom plate 19 is welded on the bottom of the four supporting columns 18, a fifth through hole is formed in the top inner wall of the sewage water tank 1 and is located on one side of the water inlet pipe 2, internal threads are arranged on the inner wall of the fifth through hole, an exhaust valve 5 is connected on the inner wall of the fifth through hole in a threaded manner, and thermal insulation cotton 22 is wrapped on the outer wall of the additive water tank 17.

Claims

1. The boiler sewage waste heat utilization device is characterized by comprising a sewage water tank (1) for collecting sewage, wherein the top of the sewage water tank (1) is provided with a water inlet pipe (2), and the side surface of the sewage water tank is provided with a water outlet pipe (3); a coil pipe (20) is arranged in the sewage water tank (1), the upper end of the coil pipe (20) is communicated with the adding water tank (17) through a liquid return pipe (14), the lower end of the coil pipe (20) is connected with the inlet end of a water pump (9) at the outer side of the sewage water tank (1) through a liquid outlet pipe (10), and the outlet end of the water pump (9) is communicated with a liquid inlet pipe (8) of the adding water tank (17); an adding pipe (15) is arranged at the top of the adding water tank (17); an additive liquid pipe (11) is arranged at one side of the additive water tank (17).

2. The boiler blow-down water waste heat utilization device according to claim 1, wherein the top end of the water inlet pipe (2) and the tail end of the water outlet pipe (3) are provided with flanges (4).

3. The boiler blow down water waste heat utilization device according to claim 1, characterized in that the coil (20) is fixed in the blow down water tank (1) by means of a mounting post (21).

4. A boiler blow-down water waste heat utilizing apparatus as claimed in claim 3, wherein said mounting posts (21) are symmetrically arranged on both left and right sides of the coil pipe (20), and the pitches of adjacent mounting posts (21) are the same.

5. The boiler blow-down water waste heat utilization device according to claim 1, characterized in that the top of the blow-down water tank (1) is provided with an exhaust valve (5).

6. The boiler blow-down water waste heat utilization device according to claim 1, characterized in that the bottom of the blow-down water tank (1) is provided with a leg (6).

7. The boiler blow-down water waste heat utilization device according to claim 1, characterized in that the water pump (9) is fixedly connected with the blow-down water tank (1) through a support plate (7) at the bottom thereof.

8. The boiler blow-down water waste heat utilization device according to claim 1, characterized in that the outside of the addition water tank (17) is wrapped with heat preservation cotton (22).

9. The boiler blow down water waste heat utilization device according to claim 1, characterized in that the bottom of the addition tank (17) is fixed to the bottom plate (19) by means of support columns (18).