CN210855360U - Steam condensing device for desulfurization wastewater zero-discharge system - Google Patents

Steam condensing device for desulfurization wastewater zero-discharge system Download PDF

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Publication number
CN210855360U
CN210855360U CN201921642527.9U CN201921642527U CN210855360U CN 210855360 U CN210855360 U CN 210855360U CN 201921642527 U CN201921642527 U CN 201921642527U CN 210855360 U CN210855360 U CN 210855360U
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air cooler
steam
discharge
steam air
condensation water
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CN201921642527.9U
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Chinese (zh)
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缪明烽
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Jiangsu Sujing Electric Power Technology Co ltd
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Jiangsu Sujing Electric Power Technology Co ltd
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Abstract

The utility model discloses a steam condensing equipment for desulfurization waste water zero discharge system. The device includes steam air cooler, condensate tank, vacuum pump and condensate discharge pump, steam air cooler sets up the condensate tank upper reaches, the condensate tank sets up the vacuum pump with the condensate discharge pump upper reaches, steam air cooler tube side is a airtight UNICOM system to condensate tank and condensate tank to the vacuum pump sunction inlet, and the condensate discharge pump sets up in condensate tank low reaches for carry the condensate to each water point. The utility model discloses have and need not the circulating water interface, need not to lay the circulating water pipeline, to reforming transform the project, the transformation content is few, does not have the influence to the circulating water system of main device, and easy to carry out does not have area's effect.

Description

Steam condensing device for desulfurization wastewater zero-discharge system
Technical Field
The utility model relates to a desulfurization waste water treatment technical field, in particular to a steam condensing equipment for desulfurization waste water zero discharge system.
Background
In the flue gas desulfurization process of a thermal power plant, a limestone-gypsum wet desulfurization system is usually adopted, and in order to maintain the chloride ion balance in the desulfurization system, desulfurization wastewater needs to be discharged from the desulfurization system regularly. Because the part of the waste water contains a large amount of harmful pollutants such as dissolved salt, the part of the waste water is recycled by adopting a multi-effect evaporation technology at present, and the zero discharge of the desulfurization waste water is realized.
In the multi-effect flash evaporation technical process, tail negative pressure steam generated in the last effect flash evaporation process generally needs to be condensed by using the existing circulating water of a power plant, so that condensed water can be generated for recycling. However, in most power plants, the circulating water cannot be provided due to the difficulty in opening pipelines or insufficient circulating water margin and the like, so that the multi-effect flash evaporation technology is difficult to implement on the desulfurization wastewater zero-discharge modification project.
SUMMERY OF THE UTILITY MODEL
According to one aspect of the utility model, a steam condensing device for a desulfurization wastewater zero discharge system is provided, which comprises a steam air cooler, a condensed water tank, a vacuum pump and a condensed water discharge pump, the steam air cooler is arranged at the upstream of the condensed water tank, the condensed water tank is arranged at the upstream of the vacuum pump and the condensed water discharge pump, the pipe pass of the steam air cooler to the condensation water tank and the suction inlet of the condensation water tank to the vacuum pump are a closed communication system, the condensation water discharge pump is arranged at the downstream of the condensation water tank, is used for conveying condensed water to each water consumption point, tail negative pressure steam from the multi-effect flash separation equipment enters a tube pass of a steam air cooler, condensed water is condensed in the steam air cooler, the condensed water is discharged from the outlet of the steam air cooler and flows into a condensed water tank, when the condensed water in the condensed water tank is collected to a certain liquid level, the condensed water is discharged to each water using point by the condensed water discharge pump.
The steam condensing device for the desulfurization wastewater zero-discharge system has the beneficial effects that the tail negative pressure steam from the multi-effect flash separation equipment enters the tube pass of the steam air cooler, exchanges heat with ambient air in the steam air cooler and is gradually condensed into condensed water; the condensed water is discharged from the outlet of the steam air cooler and flows into a condensed water tank; when the condensed water in the condensed water tank is collected to a certain liquid level, the condensed water is discharged to each water consumption point by the condensed water discharge pump, compared with a tail steam condensing device of a traditional desulfurization wastewater multi-effect flash evaporation treatment system, the technical scheme does not need to introduce circulating cooling water from the outside, and the problem that a power plant is difficult to provide the part of circulating water is solved; a circulating water interface is not needed between the desulfurization wastewater multi-effect flash evaporation treatment system and the main device of the power plant, a circulating water pipeline is not needed to be laid, the reconstruction content is less for the reconstruction project, the influence on the circulating water system of the main device is avoided, and the implementation is easy; the steam air cooler can be arranged on the roof of a desulfurization wastewater multi-effect flash evaporation treatment system building, and occupied area does not exist.
In some embodiments, the steam air cooler is a dry air cooler. The steam air cooler has the beneficial effects that the steam air cooler adopts a dry air cooler, and the water consumption is zero.
In some embodiments, the suction inlet of the vacuum pump is connected out of the top of the condensate tank. The vacuum pump has the advantages that the suction inlet of the vacuum pump is connected out from the top of the condensation water tank, air in the condensation water tank and incompletely condensed water vapor are discharged, the negative pressure working condition in the condensation water tank is maintained, and then the negative pressure working condition is provided for the steam air cooler and the multi-effect flash evaporation separation system.
In some embodiments, the steam air cooler is disposed at a position higher than the position of the condensate tank. The steam air cooler has the beneficial effects that the condensed water is discharged from the outlet of the steam air cooler and flows downwards into the condensed water tank under the action of gravity and vacuum negative pressure.
In some embodiments, a ventilation component is provided within the steam air cooler. The steam air cooler has the advantages that mechanical forced ventilation can be adopted, and the steam air cooler can stably run in low energy consumption in different environmental temperatures in winter and summer.
In some embodiments, the ventilation component within the steam air cooler is. The steam air cooler has the advantages that mechanical forced ventilation can be adopted, and the steam air cooler can stably run in low energy consumption in different environmental temperatures in winter and summer.
Drawings
FIG. 1 is a schematic structural diagram of a steam condensing unit for a zero-discharge system of desulfurization waste water according to an embodiment of the present invention;
FIG. 2 is a partial enlarged schematic view of a steam condensing unit used in the zero discharge system of desulfurization waste water shown in FIG. 1;
fig. 3 is a partial enlarged structural schematic diagram of the steam condensing device for the desulfurization wastewater zero-discharge system shown in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 to 3 schematically show a steam condensing device for a desulfurization waste water zero discharge system according to an embodiment of the present invention. As shown, the device has the following components and part relationships:
the system comprises a steam air cooler 1, a condensation water tank 2, a vacuum pump 3 and a condensation water discharge pump 4.
The steam air cooler 1 is arranged upstream of the condensate tank 2 and is preferably arranged at a higher level than the condensate tank 2.
The steam air cooler 1 adopts a dry air cooler, preferably adopts mechanical forced ventilation and heat exchange, and a ventilation part 12 is arranged in the steam air cooler 1;
the condensate tank 2 is disposed upstream of the vacuum pump 3 and the condensate discharge pump 4;
the condensation water tank 2 works under the negative pressure condition and is used for collecting steam condensation water;
a suction port 31 of the vacuum pump 3 is connected out from the top of the condensation water tank 2 and is used for maintaining the negative pressure working condition of the condensation water tank 2;
the pipe pass of the steam air cooler 1 to the condensation water tank 2 and the suction port 31 of the condensation water tank 2 to the vacuum pump 3 are a closed communication system;
a condensate discharge pump 4 is arranged downstream of the condensate tank 2 for delivering condensate to the respective water usage points 5.
The working principle is as follows:
the tail negative pressure steam 6 from the multi-effect flash separation equipment enters the tube pass of the steam air cooler 1, exchanges heat with ambient air in the steam air cooler 1 and is gradually condensed into condensed water;
the condensed water is discharged from the outlet of the steam air cooler 1 and flows downwards into the condensed water tank 2 under the action of gravity and vacuum negative pressure;
when the condensed water in the condensed water tank 2 is collected to a certain liquid level, the condensed water is discharged to each water using point 5 by a condensed water discharge pump 4;
the sunction inlet 31 of the vacuum pump 3 is connected out from the top of the condensate tank 2, and discharges the air in the condensate tank 2 and the incompletely condensed water vapor, so as to maintain the negative pressure working condition in the condensate tank 2 and further provide the negative pressure working condition for the steam air cooler 1 and the multiple-effect flash separation system.
The utility model has the advantages that:
1) compared with a tail steam condensing device of a traditional desulfurization wastewater multi-effect flash evaporation treatment system, the tail steam condensing device does not need to introduce circulating cooling water externally, and solves the problem that a power plant is difficult to provide the part of circulating water;
2) a circulating water interface is not needed between the desulfurization wastewater multi-effect flash evaporation treatment system and the main device of the power plant, a circulating water pipeline is not needed to be laid, the reconstruction content is less for the reconstruction project, the influence on the circulating water system of the main device is avoided, and the implementation is easy;
3) the steam air cooler 1 can adopt a ventilation part 12 to carry out mechanical forced ventilation, and can stably run with low energy consumption under different environmental temperatures in winter and summer;
4) the steam air cooler 1 can be arranged on the roof of a multi-effect flash evaporation treatment system building for the desulfurization wastewater, and the occupied area is not large;
5) the steam air cooler 1 adopts a dry air cooler, and water consumption is zero.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (6)

1. The steam condensing device for the desulfurization wastewater zero-discharge system is characterized by comprising a steam air cooler (1), a condensation water tank (2), a vacuum pump (3) and a condensation water discharge pump (4), wherein the steam air cooler (1) is arranged at the upstream of the condensation water tank (2), the condensation water tank (2) is arranged at the upstream of the vacuum pump (3) and the condensation water discharge pump (4), a pipe pass from the steam air cooler (1) to the condensation water tank (2) and from the condensation water tank (2) to a suction inlet (31) of the vacuum pump (3) is a closed communication system, the condensation water discharge pump (4) is arranged at the downstream of the condensation water tank (2) and is used for conveying condensation water to each water consumption point (5), tail negative pressure steam (6) from a multi-effect flash evaporation separation device enters a pipe pass of the steam air cooler (1) and is condensed into condensation water in the steam air cooler (1), condensed water is discharged from the outlet of the steam air cooler (1) and flows into the condensed water tank (2), and when the condensed water in the condensed water tank (2) is collected to a certain liquid level, the condensed water is discharged to each water using point (5) by a condensed water discharge pump (4).
2. The steam condensing device for desulfurization wastewater zero discharge system of claim 1, characterized in that the steam air cooler (1) is a dry air cooler.
3. The steam condensing device for desulfurization waste water zero discharge system according to claim 2, characterized in that the suction inlet (31) of the vacuum pump (3) is connected out from the top of the condensation water tank (2).
4. The steam condensing device for desulfurization wastewater zero discharge system according to claim 1, wherein the steam air cooler (1) is disposed at a position higher than that of the condensate tank (2).
5. The steam condensing device for desulfurization waste water zero discharge system according to claim 2, characterized in that a ventilation part (12) is provided in said steam air cooler (1).
6. The steam condensing device for desulfurization wastewater zero discharge system of claim 5, characterized in that said ventilation means (12) is a mechanical forced ventilation means.
CN201921642527.9U 2019-09-29 2019-09-29 Steam condensing device for desulfurization wastewater zero-discharge system Active CN210855360U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921642527.9U CN210855360U (en) 2019-09-29 2019-09-29 Steam condensing device for desulfurization wastewater zero-discharge system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921642527.9U CN210855360U (en) 2019-09-29 2019-09-29 Steam condensing device for desulfurization wastewater zero-discharge system

Publications (1)

Publication Number Publication Date
CN210855360U true CN210855360U (en) 2020-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921642527.9U Active CN210855360U (en) 2019-09-29 2019-09-29 Steam condensing device for desulfurization wastewater zero-discharge system

Country Status (1)

Country Link
CN (1) CN210855360U (en)

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