CN210241541U - Boiler blow-off water treatment device - Google Patents

Boiler blow-off water treatment device Download PDF

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Publication number
CN210241541U
CN210241541U CN201920050986.1U CN201920050986U CN210241541U CN 210241541 U CN210241541 U CN 210241541U CN 201920050986 U CN201920050986 U CN 201920050986U CN 210241541 U CN210241541 U CN 210241541U
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China
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water
boiler
tank
recovery
boiler blow
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CN201920050986.1U
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Inventor
Yingchao Liu
刘颖超
Lin Li
李林
Bencheng Chen
陈本成
Xinzhe Yu
于欣喆
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Anshan Huatai Huaneng Engineering Technology Co ltd
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Anshan Huatai Huaneng Engineering Technology Co ltd
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Abstract

The utility model provides a boiler blow-off water treatment device, which is connected with a boiler and a water seal tank and is used for conveying boiler blow-off water discharged from the boiler into the water seal tank, and comprises a recovery water tank and a pressurizing device, wherein the recovery water tank is connected with the boiler and the water seal tank and is used for storing the boiler blow-off water; the pressurizing device is used for enabling the boiler blow-down water in the recovery water tank to flow into the water seal tank; the pressurizing device comprises a pressurizing pipeline, a main pressurizing pump and a standby pressurizing pump, wherein the recovery water tank is connected with the water seal tank through the pressurizing pipeline; the main booster pump and the standby booster pump are connected in parallel and are connected in series on the booster pipeline. The utility model provides a boiler blow off water processing apparatus can make boiler exhaust boiler blow off water obtain reuse, reduces the waste of water resource, improves the comprehensive economic indicator of boiler operation.

Description

Boiler blow-off water treatment device
Technical Field
The utility model relates to a dry quenching technical field specifically relates to a boiler blow-down water treatment facilities.
Background
At present, with the deep promotion of energy-saving and emission-reducing work and sustainable development projects of domestic iron and steel enterprises, comprehensive economic indexes of the operation of the coke dry quenching waste heat boiler are more and more paid attention and attention by a plurality of enterprises in the industry.
In the prior art, a dry quenching waste heat boiler is a pressurized and heated device which utilizes high-temperature circulating flue gas absorbing sensible heat of red coke to exchange heat with boiler water to generate steam with certain parameters (temperature and pressure) and quality and conveys the steam to a heat user. In a boiler water circulation system, the salt concentration of boiler water in a boiler barrel is gradually increased due to continuous evaporation, so that the normal salt content of the boiler water is maintained by continuously discharging the boiler water containing high-concentration salt near the water surface in the boiler barrel to a continuous pollution discharge flash tank.
However, in the prior art, after the continuous sewage is discharged to the continuous sewage flash tank, the continuous sewage is sent to the periodic sewage flash tank and finally discharged into a sewage well and directly discharged into a drainage system, so that waste of water resources is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least, provide a boiler blow-off water treatment facilities, it can make boiler exhaust's boiler blow off water obtain reuse, reduces the waste of water resource, improves the comprehensive economic indicator of boiler operation.
In order to realize the utility model discloses an object provides a boiler blow off water treatment facilities, a serial communication port, boiler blow off water treatment facilities is connected with boiler and water seal tank, be used for with certainly in the boiler exhaust boiler blow off water carry extremely in the water seal tank.
Preferably, the system comprises a recovery water tank and a pressurizing device, wherein the recovery water tank is connected with the boiler and the water seal tank and is used for storing the boiler blow-down water; the pressurizing device is used for enabling the boiler blow-down water in the recovery water tank to flow into the water seal tank.
Preferably, the pressurizing device comprises a pressurizing pipeline, a main pressurizing pump and a standby pressurizing pump, wherein the recovery water tank is connected with the water seal tank through the pressurizing pipeline; the main booster pump and the standby booster pump are connected in parallel and are connected in series on the booster pipeline.
Preferably, the system further comprises a cooling device for cooling the boiler blow-down water in the recovery water tank.
Preferably, the cooling device comprises a cooling water pipeline, and the cooling water pipeline is connected with the recovery water tank and used for conveying cooling water to the recovery water tank.
Preferably, cooling water piping is two, is main cooling water pipeline and bypass cooling water piping respectively, main cooling water pipeline with bypass cooling water piping connects in parallel each other, and be provided with governing valve, first gate valve and second gate valve on the main cooling water pipeline, the governing valve is used for adjusting cooling water flow in the main cooling water pipeline, first gate valve with the second gate valve sets up respectively the upper reaches and the low reaches of governing valve, and be provided with first stop valve on the bypass cooling water piping.
Preferably, the system also comprises a liquid level sensor and a control unit, wherein the liquid level sensor is used for detecting the liquid level of the recovery water tank and sending the liquid level to the control unit; the control unit is used for controlling the regulating valve to regulate the flow of the cooling water in the main cooling water pipeline according to the liquid level.
Preferably, the system further comprises a flash tank, wherein the flash tank is connected with the boiler and the recovery water tank, and is used for separating steam and water from the boiler blow-down water flowing out of the boiler and discharging the water into the recovery water tank.
Preferably, the boiler further comprises a main discharge pipeline and a bypass discharge pipeline, the main discharge pipeline and the bypass discharge pipeline are connected with the boiler and the recovery water tank and are connected in parallel, a third gate valve, a fourth gate valve and a drain valve are arranged on the main discharge pipeline, the third gate valve and the fourth gate valve are respectively arranged at the upstream and the downstream of the drain valve, and a second stop valve is arranged on the bypass discharge pipeline.
Preferably, the recovery water tank and the pressurizing pump are disposed at the bottom of the boiler.
The utility model discloses following beneficial effect has:
the utility model provides a boiler blow off water treatment facilities is connected boiler blow off water treatment facilities and boiler and water seal tank, will carry to the water seal tank in from the boiler exhaust boiler blow off water with the help of boiler blow off water treatment facilities to can make boiler exhaust boiler blow off water obtain reuse, reduce the waste of water resource, improve the comprehensive economic indicator of boiler operation.
Drawings
FIG. 1 is a schematic structural view of a boiler sewage treatment device provided by the present invention;
description of reference numerals:
1-a boiler; 2-water sealing the tank; 3-a recovery water tank; 41-a pressurized pipeline; 42-a main booster pump; 43-spare booster pump; 51-main cooling water pipe; 511-regulating valve; 512-first gate valve; 513-second gate valve; 52-bypass cooling water pipe; 521-a first stop valve; 6-a liquid level sensor; 7-a flash tank; 81-a main discharge conduit; 811-third gate valve; 812-a fourth gate valve; 813-trap valves; 82-a bypass discharge conduit; 821-second stop valve.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the boiler sewage treatment device in detail with reference to the attached drawings.
As shown in fig. 1, the present embodiment provides a boiler sewage treatment device, which is connected to a boiler 1 and a water-sealed tank 2, and is used for conveying boiler sewage discharged from the boiler 1 to the water-sealed tank 2.
The boiler blow off water treatment facilities that this embodiment provided carries to water seal tank 2 in with the help of boiler blow off water treatment facilities will be from boiler 1 exhaust boiler blow off water to can make boiler 1 exhaust boiler blow off water obtain reuse, reduce the waste of water resource, improve the comprehensive economic indicator of boiler 1 operation.
In practical application, water seal tank 2 sets up in the both sides of the fire door of putting out the stove top futilely, through to letting in water among the water seal tank 2 and make the dry stove fire door pressure stability of putting out, and seal the dry stove fire door of putting out, in this embodiment, the boiler blow-off water discharges to the boiler blow-off water processing apparatus among the boiler 1, and enter into water seal tank 2 through boiler blow-off water processing apparatus, make water seal tank 2 utilize boiler blow-off water to play and make the dry stove fire door pressure stability of putting out, and carry out sealed effect to the dry stove fire door of putting out, thereby make the boiler blow-off water obtain reuse.
In the embodiment, the boiler sewage treatment device comprises a recovery water tank 3 and a pressurizing device, wherein the recovery water tank 3 is connected with a boiler 1 and a water seal tank 2 and is used for storing boiler sewage; the pressurizing device is used for making the boiler blow-down water in the recovery water tank 3 flow to the water seal tank 2. Specifically, boiler blow-off water is discharged from the boiler 1 to the recovery water tank 3, boiler blow-off water can be stored in the recovery water tank 3, and the boiler blow-off water stored in the recovery water tank 3 can be pressurized by the pressurizing device to flow toward the water seal tank 2.
In the present embodiment, the volume of the recovery water tank 3 is set to 15m3However, the volume of the recovery water tank 3 is not limited thereto, and may be designed according to the normal water usage amount of the water seal tank 2 of 30 minutes or more.
In the present embodiment, the pressurizing means includes a pressurizing line 41, a main pressurizing pump 42, and a backup pressurizing pump 43, wherein the recovery water tank 3 is connected to the water-sealed tank 2 through the pressurizing line 41; the main pressure pump 42 and the backup pressure pump 43 are connected in parallel to each other and connected in series to the pressure line 41.
Specifically, under the normal condition, make the boiler blowdown rivers in the recovery tank 3 to water seal tank 2 through main force (forcing) pump 42, with moisturizing in to water seal tank 2, under the condition of a large amount of water shortage of water seal tank 2 emergence accident, make the boiler blowdown rivers in the recovery tank 3 to water seal tank 2 through reserve force (forcing) pump 43 and main force (forcing) pump 42 jointly, improve from the velocity of flow and the flow of the boiler blowdown water that recovery tank 3 flows to water seal tank 2, in order can in time to moisturizing in water seal tank 2, in addition, when main force (forcing) pump 42 goes wrong and can not pump water or main force (forcing) pump 42 needs to overhaul, can use the boiler blowdown rivers that reserve force (forcing) pump 43 messenger recovery tank 3 to water seal tank 2, avoid water seal tank 2 can's the condition emergence that can's moisturizing.
In this embodiment, the amount of water pumped by the pressure pump is set to 4.5m3/h-5.5m3However, the pumping water amount of the pressurizing pump is not limited to this, and may be designed according to the normal water consumption of the water seal tank 2.
In this embodiment, the boiler blow-down water treatment apparatus further includes a cooling device for cooling the boiler blow-down water in the recovery water tank 3. In practical application, the boiler blow-down water in the recovery water tank 3 is cooled by the cooling device, so that the temperature of the boiler blow-down water flowing into the water seal tank 2 is reduced.
In the present embodiment, the water temperature of the boiler blow-down water in the water seal tank 2 is controlled to 50 ℃ to 60 ℃, but the water temperature of the boiler blow-down water in the water seal tank 2 is not limited thereto.
In this embodiment, the cooling device comprises a cooling water conduit, which is connected to the recovery water tank 3 for feeding cooling water into the recovery water tank 3.
Specifically, carry the cooling water through condenser tube in to recovery tank 3, make the boiler blow off water in cooling water and the recovery tank 3 mix to reduce the temperature of boiler blow off water, in addition, in practical application, the relative water seal groove 2's of boiler 1 exhaust boiler blow off water quantity is less, lets in the cooling water also can avoid when a large amount of water lacks in water seal groove 2 through condenser tube in to recovery tank 3, and water seal groove 2 is difficult to in time obtain the circumstances of replenishment take place. In practical application, industrial water can be used as the cooling water.
In the present embodiment, the number of the cooling water pipes is two, that is, the main cooling water pipe 51 and the bypass cooling water pipe 52 are connected in parallel with each other, and a regulating valve 511, a first gate valve 512 and a second gate valve 513 are provided on the main cooling water pipe 51, the regulating valve 511 is used for regulating the flow rate of the cooling water in the main cooling water pipe 51, the first gate valve 512 and the second gate valve 513 are provided upstream and downstream of the regulating valve 511, respectively, and a first stop valve 521 is provided on the bypass cooling water pipe 52.
In practical application, in a normal condition, the regulating valve 511, the first gate valve 512 and the second gate valve 513 are opened, the first stop valve 521 is closed, so that the cooling water flows into the recovery water tank 3 through the main cooling water pipeline 51, when the regulating valve 511 needs to be replaced or overhauled, the first gate valve 512 located at the upstream of the regulating valve 511 and the second gate valve 513 located at the downstream of the regulating valve 511 are closed, boiler waste water is prevented from entering the regulating valve 511, the first stop valve 521 is opened, the cooling water is conveyed into the recovery water tank 3 by using the bypass cooling water pipeline 52, and the situation that the boiler waste water in the recovery water tank 3 cannot be cooled is avoided.
In the present embodiment, the main cooling water pipe 51 is connected to the recovery water tank 3, and both ends of the bypass cooling water pipe 52 are connected to the main cooling water pipe 51, and are located upstream of the first gate valve 512 and downstream of the second gate valve 513, respectively.
In this embodiment, the boiler blow-down water treatment device further comprises a liquid level sensor 6 and a control unit, wherein the liquid level sensor 6 is used for detecting the liquid level of the recovery water tank 3 and sending the liquid level to the control unit; the control unit is used for controlling the regulating valve according to the liquid level and regulating the flow of the cooling water in the main cooling water pipeline 51.
In practical application, the liquid level in the recovery tank 3 that level sensor 6 will detect sends control unit to, and control unit controls the aperture of governing valve 511 on the main cooling water pipeline 51 according to the liquid level in the recovery tank 3 that level sensor 6 sent to the flow of the cooling water that gets into in recovery tank 3, and such design can satisfy the timely cooling to boiler blow-off water, can avoid the cooling water of boiler blow-off water to spill over in the recovery tank 3 again. Specifically, when the liquid level in recovery water tank 3 is lower, increase the aperture of governing valve 511 to improve the flow that gets into the cooling water in recovery water tank 3, and the boiler blow off water in cooling recovery water tank 3 in time, when the liquid level in recovery water tank 3 is higher, reduce the aperture of governing valve 511, with the flow that reduces the cooling water that gets into in recovery water tank 3, avoid the cooling water of boiler blow off water to spill over in recovery water tank 3.
In this embodiment, the boiler blow-down water treatment apparatus further includes a flash tank 7, and the flash tank 7 is connected to the boiler 1 and the recovery water tank 3, and is configured to separate steam and water from the boiler blow-down water flowing from the boiler 1 and discharge the water into the recovery water tank 3.
It is specific, flash tank 7 can adopt continuous blowdown expander, continuous blowdown expander can carry out the dilatation separation with boiler blow off water, isolate steam and water, in dry quenching thermodynamic system, the steam of isolating can insert in the oxygen-eliminating device of deoxidization water-feeding pump station, in order to save oxygen-eliminating device heating steam quantity, in order to improve 1 thermal utilization ratio of boiler, and the water of isolating then can get into recovery tank 3, in order to make boiler blow off water obtain reuse, reduce the waste of water resource, the comprehensive economic indicator of 1 operation of boiler is improved.
In the present embodiment, the boiler blow-down water treatment apparatus further includes a main discharge pipe 81 and a bypass discharge pipe 82, the main discharge pipe 81 and the bypass discharge pipe 82 are connected to the boiler 1 and the recovery water tank 3, and are connected in parallel to each other, and a third gate valve 811, a fourth gate valve 812 and a trap 813 are provided on the main discharge pipe 81, the third gate valve 811 and the fourth gate valve 812 are provided upstream and downstream of the trap 813, respectively, and a second stop valve 821 is provided on the bypass discharge pipe 82.
Specifically, under normal conditions, the third gate valve 811 and the fourth gate valve 812 are opened, the second stop valve 821 is closed, the boiler sewage is made to flow into the recovery water tank 3 through the main discharge pipe 81, when the drain valve 813 needs to be replaced or repaired, the third gate valve 811 located on the upstream of the drain valve 813 and the fourth gate valve 812 located on the downstream of the drain valve 813 are closed, the boiler sewage is prevented from entering the drain valve 813, the second stop valve 821 is opened, the boiler sewage flows to the recovery water tank 3 through the bypass discharge pipe 82, and the boiler sewage is prevented from being discharged into the recovery water tank 3.
In practical application, the temperature of boiler blow-down water is higher, and boiler blow-down water contains steam, and trap 813 plays the effect of hindering vapour and draining water, and optionally, the trap adopts the disc type trap.
In the present embodiment, the boiler 1 is connected to the recovery water tank 3 through the main discharge pipe 81, and both ends of the bypass discharge pipe 82 are connected to the main discharge pipe 81 and are located upstream of the third gate valve 811 and downstream of the fourth gate valve 812, respectively.
In this embodiment, the recycling water tank 3 and the pressure pump are disposed at the bottom of the boiler 1, such arrangement facilitates the arrangement of the discharge pipeline, and the occupied area of the boiler sewage treatment device provided by this embodiment is reduced by utilizing the occupied area of the original boiler 1.
To sum up, the boiler blow-off water treatment facilities that this embodiment provided carries the boiler blow-off water discharged from boiler 1 to water seal tank 2 in with the help of boiler blow-off water treatment facilities to can make boiler 1 exhaust boiler blow-off water obtain reuse, reduce the waste of water resource, improve the comprehensive economic indicator of boiler 1 operation.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (8)

1. The boiler blow-off water treatment device is characterized in that the boiler blow-off water treatment device is connected with a boiler and a water seal tank and is used for conveying boiler blow-off water discharged from the boiler into the water seal tank;
the system comprises a recovery water tank and a pressurizing device, wherein the recovery water tank is connected with the boiler and the water seal tank and is used for storing the boiler blow-down water; the pressurizing device is used for enabling the boiler blow-down water in the recovery water tank to flow into the water seal tank;
the pressurizing device comprises a pressurizing pipeline, a main pressurizing pump and a standby pressurizing pump, wherein the recovery water tank is connected with the water seal tank through the pressurizing pipeline; the main booster pump and the standby booster pump are connected in parallel and are connected in series on the booster pipeline.
2. The boiler blow off water treatment apparatus according to claim 1, further comprising a cooling device for cooling the boiler blow off water in the recovery water tank.
3. Boiler blow-down water treatment plant according to claim 2, characterized in that the cooling device comprises a cooling water conduit connected with the recovery water tank for conveying cooling water into the recovery water tank.
4. The boiler blow-off water treatment device according to claim 3, wherein the number of the cooling water pipes is two, namely a main cooling water pipe and a bypass cooling water pipe, the main cooling water pipe and the bypass cooling water pipe are connected in parallel, a regulating valve, a first gate valve and a second gate valve are arranged on the main cooling water pipe, the regulating valve is used for regulating the flow rate of the cooling water in the main cooling water pipe, the first gate valve and the second gate valve are respectively arranged at the upstream and the downstream of the regulating valve, and a first stop valve is arranged on the bypass cooling water pipe.
5. The boiler blow-off water treatment device according to claim 4, further comprising a liquid level sensor and a control unit, wherein the liquid level sensor is used for detecting the liquid level of the recovery water tank and sending the liquid level to the control unit; the control unit is used for controlling the regulating valve to regulate the flow of the cooling water in the main cooling water pipeline according to the liquid level of the recovery water tank detected by the liquid level sensor.
6. The boiler blow off water treatment device of claim 1 further comprising a flash tank connected to the boiler and the recovery tank for separating steam and water from the boiler blow off water flowing from the boiler and discharging the water into the recovery tank.
7. The boiler blow-down water treatment apparatus according to claim 6, further comprising a main discharge pipe and a bypass discharge pipe, both connected to the boiler and the recovery water tank in parallel, and provided with a third gate valve, a fourth gate valve and a trap valve, the third gate valve and the fourth gate valve being disposed upstream and downstream of the trap valve, respectively, and a second stop valve being disposed on the bypass discharge pipe.
8. The boiler blow off water treatment device of any one of claims 1 to 7 wherein the recovery tank and the pressurizing device are disposed at the bottom of the boiler.
CN201920050986.1U 2019-01-11 2019-01-11 Boiler blow-off water treatment device Active CN210241541U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112283691A (en) * 2020-11-17 2021-01-29 国家能源集团乐东发电有限公司 Power station plant area steam drainage recovery system and recovery control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112283691A (en) * 2020-11-17 2021-01-29 国家能源集团乐东发电有限公司 Power station plant area steam drainage recovery system and recovery control method

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