Condensate water branch of high-salt-content wastewater evaporation treatment system

Abstract

The utility model discloses a condensate water branch of a high-salt-content wastewater evaporation treatment system. The condensate water branch comprises a condensate water barrel, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are communicated with the condensate water barrel; one end of the first pipeline away from the condensate bucket is communicated with the evaporation heat exchanger; the second pipeline comprises a main pipeline communicated with the condensate water bucket, and a first branch and a second branch which are separated from one end, far away from the condensate water bucket, of the main pipeline; the main path is provided with a condensate pump; the first branch is used for being communicated with a steam compression fan, and the second branch is used for being communicated with a cooling tower and / or a steam generator. The first pipeline is communicated with the evaporation heat exchanger, so that condensate water generated by the evaporation heat exchanger can be received; and the first branch and the second branch are separated from one end, far away from the condensate water barrel, of the main path, so that the overall space design is effectively optimized, the cost is reduced, the treatment efficiency is improved, and meanwhile, various functions related to condensate water collection and use are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a condensate water branch of a high-salt wastewater evaporation treatment system.

Background Art

[0002] In the process of high-salt wastewater treatment, an important part is the evaporation treatment system based on the pretreated high-salt wastewater. The condensate water pipeline in the evaporation treatment system takes into account the functions of preheating the evaporation inlet water and cooling the outlet of the steam compression fan. However, the pipeline design of the existing condensate water pipeline in the wastewater treatment system is relatively complex and cannot take into account multiple functions, resulting in higher costs and lower treatment efficiency. In view of this, it is necessary to provide a condensate water branch of a high-salt wastewater evaporation treatment system to overcome the above defects.

Content of the Utility Model

[0003] The purpose of the utility model is to provide a condensate water branch of a high-salt wastewater evaporation treatment system, aiming to improve the problem that the pipeline design of the existing condensate water pipeline is relatively complex and cannot take into account multiple functions, reduce costs and improve treatment efficiency.

[0004] To achieve the above purpose, the utility model provides a condensate water branch of a high-salt wastewater evaporation treatment system, including: a condensate water bucket and a first pipeline and a second pipeline communicated with the condensate water bucket;

[0005] One end of the first pipeline far away from the condensate water bucket is used for communicating with an evaporation heat exchanger to receive the condensate water discharged by the evaporation heat exchanger;

[0006] The second pipeline includes a main road communicated with the condensate water bucket and a first branch and a second branch branched from one end of the main road far away from the condensate water bucket; a condensate water pump is arranged on the main road; the first branch is used for communicating with a steam compression fan, and the second branch is used for communicating with a cooling tower and / or a steam generator.

[0007] In a preferred embodiment, the connection point of the first branch and the second branch is defined; a condensate water pump inlet hand valve is arranged at the part of the main road between the condensate water pump and the condensate water bucket, and a condensate water pump outlet hand valve is arranged at the part of the main road between the connection point and the condensate water pump.

[0008] In a preferred embodiment, it further includes an outlet bypass with one end communicated with the condensate water bucket; a condensate water pump outlet bypass valve is arranged on the outlet bypass, and the end far away from the condensate water bucket is communicated with the part of the main road between the connection point and the condensate water pump outlet hand valve.

[0009] In a preferred embodiment, a desuperheating water regulating valve is provided in the first branch, and a parallel first fan branch and a second fan branch are branched out on the side far from the connection point; a manual desuperheating water valve at the fan inlet is provided in the first fan branch for connecting to the inlet of the steam compression fan; a manual desuperheating water valve at the fan outlet is provided in the second fan branch for connecting to the outlet of the steam compression fan.

[0010] In a preferred embodiment, a regulating valve at the condensate pump outlet is provided in the second branch, and a manual valve before the regulating valve at the condensate pump outlet and a manual valve after the regulating valve at the condensate pump outlet are respectively provided on both sides of the regulating valve at the condensate pump outlet.

[0011] In a preferred embodiment, a bypass of the regulating valve at the condensate pump outlet is further provided in the second branch, and both ends of the bypass of the regulating valve at the condensate pump outlet are respectively connected to the sides far from each other of the manual valve before the regulating valve at the condensate pump outlet and the manual valve after the regulating valve at the condensate pump outlet; a bypass valve of the regulating valve at the condensate pump outlet is provided in the bypass of the regulating valve at the condensate pump outlet to ensure that the condensate pump outlet pipeline can still operate normally when the regulating valve at the condensate pump outlet fails.

[0012] In a preferred embodiment, a return branch is further connected to the second branch, and one end of the return branch far from the second branch is used to communicate with the evaporation raw water tank; condensate can flow into the evaporation raw water tank through the return branch.

[0013] In a preferred embodiment, the second branch is further used for reverse heat exchange with the evaporation water inlet pipeline led out from the evaporation raw water tank through a preheating plate heat exchanger to reduce the temperature of the condensate.

[0014] In a preferred embodiment, a preheating bypass respectively communicating with both sides of the preheating plate heat exchanger is further provided in the second branch, and a manual valve of the preheating bypass is provided in the preheating bypass.

[0015] In a preferred embodiment, a sewage discharge branch of the condensate bucket is further provided at a preset position of the main pipeline, and a manual sewage discharge valve of the condensate bucket is provided in the sewage discharge branch of the condensate bucket; the manual sewage discharge valve of the condensate bucket is used to control the discharge of sewage in the condensate bucket to the outside.

[0016] The condensate water branch of the high-salt wastewater evaporation treatment system provided by the present utility model is connected to the evaporation heat exchanger through the first pipeline, so as to receive the condensate water discharged from the evaporation heat exchanger; and the first branch and the second branch are branched out from one end of the main pipeline far from the condensate bucket, effectively optimizing the overall space design, reducing the cost and improving the treatment efficiency; at the same time, the first branch is used to communicate with the steam compression fan, and the second branch is used to communicate with the cooling tower and / or the steam generator, so as to achieve the purpose of making full use of the evaporation condensate water.

Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the pipeline of the condensate branch of the high-salt wastewater evaporation treatment system provided by the present utility model;

[0019] Figure 2 For Figure 1 It is a schematic diagram of the pipeline around the main pipeline in the condensate branch of the high-salt wastewater evaporation treatment system shown.

[0020] Reference numerals in the figure: 100, condensate branch of the high-salt wastewater evaporation treatment system; 200, evaporation heat exchanger; 300, steam compression fan; 400, evaporation raw water tank; 401, evaporation inlet pipeline; 500, preheating plate heat exchanger;

[0021] 1, condensate bucket; 10, first pipeline;

[0022] 20, second pipeline; 21, main pipeline; 211, condensate pump; 212, manual valve at the inlet of the condensate pump; 213, manual valve at the outlet of the condensate pump;

[0023] 22, first branch; 221, desuperheating water regulating valve; 222, first fan branch; 2221, manual valve for desuperheating water at the fan inlet; 223, second fan branch; 2231, manual valve for desuperheating water at the fan outlet;

[0024] 23, second branch; 231, regulating valve at the outlet of the condensate pump; 232, manual valve before the regulating valve at the outlet of the condensate pump; 233, manual valve after the regulating valve at the outlet of the condensate pump; 234, bypass of the regulating valve at the outlet of the condensate pump; 2341, bypass valve of the regulating valve at the outlet of the condensate pump; 235, return branch; 236, preheating bypass; 2361, manual valve of the preheating bypass;

[0025] 24, drain branch of the condensate bucket; 241, manual valve for draining the condensate bucket; 25, outlet bypass; 251, bypass valve at the outlet of the condensate pump.

Specific Embodiments

[0026] In order to make the purpose, technical solutions and beneficial technical effects of the present utility model clearer and more understandable, the following will further detail the present utility model in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0027] It should also be understood that the terms used in the specification of the present utility model are merely for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0028] It should be further understood that the term " / and" used in the specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] In an embodiment of the present utility model, a condensate water branch 100 of a high-salt wastewater evaporation treatment system is provided, which is used in a high-salt wastewater evaporation treatment system to provide a heat source for an evaporation inlet pipeline and a desuperheating water or a supplementary water source for various devices.

[0030] As Figure 1 shown in connection with Figure 2 the condensate water branch of the high-salt wastewater evaporation treatment system includes: a condensate water bucket 1 and a first pipeline 10 and a second pipeline 20 communicating with the condensate water bucket 1.

[0031] Wherein, one end of the first pipeline 10 away from the condensate water bucket is used to communicate with an evaporation heat exchanger 200 for receiving the condensate water discharged from the evaporation heat exchanger 200. That is, the condensate water generated in the evaporation heat exchanger 200 enters the condensate water bucket 1 through the first pipeline 10, so that the multiple utilization of the condensate water can be realized.

[0032] The second pipeline 20 includes a main road 21 communicating with the condensate water bucket 1 and a first branch 22 and a second branch 23 branched from one end of the main road 21 away from the condensate water bucket 1.

[0033] A condensate water pump 211 is provided on the main road 21. The condensate water pump 211 can not only transport the external condensate water into the condensate water bucket 1, but also drive the condensate water in the condensate water bucket 1 to be discharged outward through the main road 21. Further, a condensate water bucket sewage discharge branch 24 is provided at a preset part of the main road 21, and a condensate water bucket sewage discharge manual valve 241 is provided on the condensate water bucket sewage discharge branch 24. The condensate water bucket sewage discharge manual valve 241 is used to control the discharge of the sewage in the condensate water bucket 1 to facilitate the cleaning of the condensate water bucket 1.

[0034] In this embodiment, the connection point of the first branch 22 and the second branch 23 can be defined as connection point A. A condensate water pump inlet manual valve 212 is provided at the part of the main road 21 between the condensate water pump 211 and the condensate water bucket 1, and a condensate water pump outlet manual valve 213 is provided at the part between the connection point A and the condensate water pump 211.

[0035] Further, the second pipeline 20 further includes an outlet bypass 25 with one end communicating with the condensate water bucket. The outlet bypass 25 is provided with a condensate water pump outlet bypass valve 251, and the end far from the condensate water bucket 1 communicates with the part of the main pipeline 21 between the connection point A and the condensate water pump outlet manual valve 213. That is, the outlet bypass 25 and the main pipeline 21 are in a similar parallel state. It should be noted that in practice, the rated flow rate of the condensate water pump 211 may exceed the actual condensate water flow rate of the system. Therefore, the condensate water pump 211 can be shunted through the outlet bypass 25, that is, the condensate water pump 211 can operate at the rated flow rate. Most of the condensate water is discharged outward through the main pipeline 21, and a small part of the condensate water flows back into the condensate water bucket 1 through the outlet bypass 25, so as to prevent the condensate water pump 211 from operating under pressure to ensure that the outlet flow rate matches the actual condensate water volume of the system.

[0036] Among them, the first branch 22 is used to communicate with the steam compression fan 300. The first branch 22 is provided with a desuperheating water regulating valve 221, and on the side far from the connection point A, a parallel first fan branch 222 and a second fan branch 223 are branched out. The first fan branch 222 is provided with a fan inlet desuperheating water manual valve 2221 for communicating with the inlet of the steam compression fan 300. The second fan branch 223 is provided with a fan outlet desuperheating water manual valve 2231 for communicating with the outlet of the steam compression fan 300. Therefore, by spraying desuperheating water, it is possible to effectively prevent the steam at the fan outlet from being supersaturated, or turn the unsaturated steam at the fan inlet into saturated steam.

[0037] The second branch 23 is used to communicate with the cooling tower and / or the steam generator, and thus one or more outlets can be correspondingly branched out.

[0038] Specifically, the second branch 23 is provided with a condensate water pump outlet regulating valve 231, and a condensate water pump outlet regulating valve front manual valve 232 and a condensate water pump outlet regulating valve rear manual valve 233 are respectively provided on both sides of the condensate water pump outlet regulating valve 231. Further, the second branch 23 further includes a condensate water pump outlet regulating valve bypass 234, and both ends of the condensate water pump outlet regulating valve bypass 234 are respectively communicated with the sides of the condensate water pump outlet regulating valve front manual valve 232 and the condensate water pump outlet regulating valve rear manual valve 233 that are far away from each other. The condensate water pump outlet regulating valve bypass 234 is provided with a condensate water pump outlet regulating valve bypass valve 2341.

[0039] Further, the second branch 23 is further communicated with a return branch 235, and the end of the return branch 235 far from the second branch 23 is used to communicate with the evaporation raw water tank 400. The condensate water can flow into the evaporation raw water tank 400 through the return branch 235. Thus, when the water volume in the evaporation raw water tank 400 is insufficient, at this time, emergency water replenishment can be carried out to the evaporation raw water tank 400 through the second branch 23, so as to prevent the entire system from stopping operation due to insufficient water volume in the evaporation raw water tank.

[0040] In some embodiments, the second branch 23 is further configured to perform reverse heat exchange with the evaporation water inlet pipeline 401 led out from the self-evaporation raw water tank 400 through the preheating plate heat exchanger 500. That is, both the second branch 23 and the evaporation water inlet pipeline 401 pass through the preheating plate heat exchanger 500 and flow in opposite directions. Among them, the high-salt wastewater in the evaporation raw water tank 400 enters the evaporation heat exchanger 200 after being preheated by passing through the preheating plate 500 via the evaporation water inlet pipeline 401. It should be noted that the temperature of the condensed water is relatively high at this time. Therefore, through the preheating plate heat exchanger 500, the condensed water can be cooled, which is convenient for supplying to the cooling tower and / or the steam generator, and at the same time, a heat source can be provided to preheat the high-salt wastewater in the evaporation water inlet pipeline 401, avoiding disrupting the thermal balance of the evaporation system operation.

[0041] Furthermore, the second branch 23 is also provided with a preheating bypass 236 respectively communicating with both sides of the preheating plate heat exchanger 500, and the preheating bypass 236 is provided with a preheating bypass manual valve 2361. The preheating bypass 236 can adjust the temperature of the preheated raw water by means of bypass operation.

[0042] The condensed water branch 100 of the high-salt wastewater evaporation treatment system provided by the present utility model is communicated with the evaporation heat exchanger 200 through the first pipeline 10, so as to receive the condensed water generated by the evaporation heat exchanger 200; and the first branch 22 and the second branch 23 are branched from the main pipeline 21 away from one end of the condensed water bucket 1, effectively optimizing the overall space design, reducing the cost, and improving the treatment efficiency; at the same time, the first branch 22 is used to communicate with the steam compression blower 300, and the second branch 23 is used to communicate with the cooling tower and / or the steam generator, thereby achieving the purpose of making full use of the evaporation condensed water.

[0043] The present utility model is not limited solely to what is described in the specification and embodiments. Therefore, for those skilled in the art, additional advantages and modifications can be easily achieved. Thus, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present utility model is not limited to specific details, representative devices, and the illustrated examples shown and described herein.

Claims

1. A condensate branch of a high-salinity wastewater evaporation treatment system, characterized in that: include: A condensed water bucket and a first pipeline and a second pipeline connected to the condensed water bucket; The end of the first pipeline away from the condensed water bucket is used to communicate with the evaporative heat exchanger to receive the condensed water discharged from the evaporative heat exchanger; The second pipeline includes a main line connected to the condensate bucket and a first branch and a second branch branching from one end of the main line away from the condensate bucket; the main line is provided with a condensate pump; the first branch is used to connect to the steam compression fan, and the second branch is used to connect to the cooling tower and / or steam generator.

2. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 1, characterized in that: The connection point between the first branch and the second branch is defined as a connection point; the main line is provided with a condensate pump inlet manual valve at a position between the condensate pump and the condensate bucket, and a condensate pump outlet manual valve is provided at a position between the connection point and the condensate pump.

3. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 2, characterized in that: It also includes an outlet bypass with one end connected to the condensate bucket; the outlet bypass is provided with a condensate pump outlet bypass valve, and the end away from the condensate bucket is connected to the main line located between the connection point and the condensate pump outlet manual valve.

4. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 3, characterized in that: The first branch is provided with a cooling water regulating valve, and a parallel first fan branch and a second fan branch are separated on the side away from the connection point; the first fan branch is provided with a fan inlet cooling water hand valve for connecting to the inlet of the steam compression fan; the second fan branch is provided with a fan outlet cooling water hand valve for connecting to the outlet of the steam compression fan.

5. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 1, characterized in that: The second branch is provided with a condensate pump outlet regulating valve, and a front manual valve of the condensate pump outlet regulating valve and a rear manual valve of the condensate pump outlet regulating valve are respectively provided on both sides of the condensate pump outlet regulating valve.

6. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 5, characterized in that: The second branch is also provided with a condensate pump outlet regulating valve bypass, and the two ends of the condensate pump outlet regulating valve bypass are respectively connected to the side where the front manual valve of the condensate pump outlet regulating valve and the rear manual valve of the condensate pump outlet regulating valve are away from each other; the condensate pump outlet regulating valve bypass is provided with a condensate pump outlet regulating valve bypass valve.

7. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 1, characterized in that: The second branch is also connected to a reflux branch, and one end of the reflux branch away from the second branch is used to communicate with the evaporation raw water tank; condensed water can flow into the evaporation raw water tank through the reflux branch.

8. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 7, characterized in that: The second branch is also used for reverse heat exchange with the evaporation water inlet pipeline connected from the evaporation raw water tank through the preheating plate to reduce the temperature of the condensed water.

9. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 8, characterized in that: The second branch is also provided with a preheating bypass respectively connected to both sides of the preheating plate, and the preheating bypass is provided with a preheating bypass manual valve.

10. The condensate branch of the high-salinity wastewater evaporation treatment system according to claim 1, characterized in that: A condensate water barrel sewage branch is also provided at a preset position of the main line, and the condensate water barrel sewage branch is provided with a condensate water barrel sewage hand valve; the condensate water barrel sewage hand valve is used to control the sewage in the condensate water barrel to be discharged outwardly.

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