Steam condensation water recycling and reusing system

Abstract

The utility model belongs to the technical field of energy conservation, and particularly relates to a steam condensation water recycling and reusing system which is characterized in that a steam source is connected with an air inlet of a steam-water separator through a first pipeline, a steam condensation water outlet at the bottom of the steam-water separator is connected with a second pipeline, and the second pipeline is respectively connected with a third pipeline and a fourth pipeline; the third pipeline is connected with a sewage pipe network; the fourth pipeline is connected with a water inlet of a local condensed water storage tank; a steam outlet of the steam-water separator is connected with a steam inlet of the heat exchanger through a fifth pipeline, and a condensed water outlet of the heat exchanger is connected with a water inlet of a condensed water local storage tank through a sixth pipeline; a condensed water outlet of the local condensed water storage tank is connected with a water inlet of a water pump through a seventh pipeline, water outlets of the water pump are connected through an eighth pipeline and a ninth pipeline, the other end of the eighth pipeline is connected with a water inlet of the concentrated condensed water storage tank, and the other end of the ninth pipeline is connected with a local condensed water recycling terminal. After condensed water of related pipeline systems is gathered to the local static pressure storage tank, the condensed water is conveyed to the far-end centralized storage tank in a controlled mode, or local consumption and utilization are achieved through switching of a valve set.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy conservation, and in particular relates to a steam condensate recovery and reuse system. Background Art

[0002] After steam passes through each process, steam condensate will be generated due to temperature changes. However, the locations where steam condensate is generated are relatively scattered. The current recovery efficiency of steam condensate is low, and in some locations, the unreasonable setting of the recovery device will cause adverse back pressure problems on the steam drain of the process equipment. How to efficiently recover steam condensate has received widespread attention. Utility Model Content

[0003] The purpose of the present invention is to provide a steam condensate recovery and reuse system to solve the problems existing in the above-mentioned background technology.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A steam condensate recovery and reuse system, wherein a steam source is connected to an air inlet of a steam-water separator via a first pipeline, a steam condensate outlet at the bottom of the steam-water separator is connected to a second pipeline, the second pipeline is connected to a third pipeline and a fourth pipeline respectively, the third pipeline is connected to a sewage network, and the fourth pipeline is connected to a water inlet of a local condensate storage tank;

[0006] The steam outlet of the steam-water separator is connected to the steam inlet of the heat exchanger through the fifth pipeline, and the condensate outlet of the heat exchanger is connected to the water inlet of the condensate local storage tank through the sixth pipeline;

[0007] The condensate outlet of the local condensate storage tank is connected to the water pump inlet through the seventh pipeline, and the water pump outlet is connected through the eighth pipeline and the ninth pipeline respectively, where the other end of the eighth pipeline is connected to the water inlet of the condensate centralized storage tank, and the other end of the ninth pipeline is connected to the local condensate reuse terminal.

[0008] Furthermore, a steam main stop valve and a steam filter are provided on the first pipeline.

[0009] Furthermore, a steam-water separator drain stop valve is provided on the second pipeline, a steam-water separator condensate direct discharge stop valve is provided on the third pipeline, and a steam-water separator drain end one-way valve and a steam-water separator drain end electric valve are provided on the fourth pipeline.

[0010] Furthermore, a steam pressure reducing valve and a main steam trap are provided on the fifth pipeline, wherein the condensate outlet of the main steam trap is connected to the water inlet of the local condensate storage tank through a steam trap pipeline, and a one-way valve at the drainage end of the main steam trap is provided on the steam trap pipeline.

[0011] Furthermore, a one-way valve for discharging condensed water after heat exchange is provided on the sixth pipeline.

[0012] Furthermore, the local condensate storage tank is connected to the dehumidification system through a dehumidification pipe.

[0013] Furthermore, a tank drain stop valve is provided on the seventh pipeline.

[0014] Furthermore, a condensate local recycling pipeline stop valve and a condensate local recycling pipeline one-way valve are provided on the eighth pipeline.

[0015] Furthermore, a condensate recovery one-way valve and a stop valve after the condensate recovery pump are provided on the ninth pipeline.

[0016] Furthermore, the sewage outlet of the local condensate storage tank is connected to the sewage network through a tank sewage pipe, and a tank sewage stop valve is provided on the tank sewage pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The steam condensate recovery system in this technical solution is primarily divided into three sub-sections: the separator condensate recovery section, the steam trap condensate recovery section, and the heat exchanger condensate recovery section. Each section's interface starts at the steam source and ends at the local condensate storage tank. Condensate from the relevant piping system is collected in the local static pressure storage tank and then controlledly transported to a remote centralized storage tank or consumed locally through valve switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a flow chart of the steam condensate recovery and reuse system of the present utility model.

[0020] Description of reference numerals:

[0021] 100. Steam source; 101. Steam main stop valve; 102. Steam filter; 103. Separator; 104. Separator drain stop valve; 105. Separator drain check valve; 106. Separator drain electric valve; 107. Separator condensate direct discharge stop valve; 108. Third pipeline; 109. Steam pressure reducing valve; 110. Main steam trap; 111. Heat exchanger; 112. Main steam trap drain check valve; 113. Condensate discharge check valve after heat exchange; 114. First pipeline; 115. Second pipeline; 116. Fourth pipeline; 117. Fifth pipeline; 118. Sixth pipeline; 00. Local condensate storage tank; 201. Electronic liquid level gauge; 202. High-level overflow pipe of storage tank; 203. Sewage pipe of storage tank; 204. Sewage stop valve of storage tank; 300. Drainage system; 301. Drainage pipe; 400. Sewage network; 501. Drain stop valve of storage tank; 502. Water pump; 503. Stop valve of local condensate reuse pipe; 504. Stop valve after condensate recovery pump; 505. Eighth pipeline; 506. Seventh pipeline; 600. Centralized condensate storage tank; 701. Stop valve after condensate recovery pump; 702. One-way valve of local condensate reuse pipe; 703. Ninth pipeline; 704. Local condensate reuse terminal. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.

[0023] like Figure 1 As shown, the steam condensate recovery system of the present application is mainly divided into three sub-sections, namely the steam-water separator condensate recovery section, the steam trap condensate recovery section, and the heat exchanger condensate recovery section. The interface starting point of each section is the steam source 100, and the interface end point is the condensate local storage tank 200.

[0024] In the present application, a steam condensate recovery and reuse system is provided, wherein a steam source 100 is connected to the air inlet of a steam-water separator via a first pipe 114, a steam condensate outlet at the bottom of the steam-water separator 103 is connected to a second pipe 115, the second pipe 115 is connected to a third pipe 108 and a fourth pipe 116, respectively, the third pipe 108 is connected to a sewage pipe network 400, and the fourth pipe 116 is connected to the water inlet of a local condensate storage tank 200;

[0025] The steam outlet of the steam-water separator 103 is connected to the steam inlet of the heat exchanger 111 through the fifth pipeline 117 , and the condensate outlet of the heat exchanger 111 is connected to the water inlet of the condensate local storage tank 200 through the sixth pipeline 118 .

[0026] The condensate outlet of the local condensate storage tank 200 is connected to the water inlet of the water pump 502 through the seventh pipeline 506, and the water outlet of the water pump 502 is connected through the eighth pipeline 505 and the ninth pipeline 703 respectively, wherein the other end of the eighth pipeline 505 is connected to the water inlet of the condensate centralized storage tank 600, and the other end of the ninth pipeline 703 is connected to the local condensate recycling terminal 704.

[0027] In the present application, a steam main stop valve 101 and a steam filter 102 are provided on the first pipeline 114 .

[0028] In this application, a steam-water separator drain stop valve 104 is provided on the second pipeline 115, a steam-water separator condensate direct discharge stop valve 107 is provided on the third pipeline 108, and a steam-water separator drain end one-way valve 105 and a steam-water separator drain end electric valve 106 are provided on the fourth pipeline 116.

[0029] In this application, a steam pressure reducing valve 109 and a main steam trap 110 are provided on the fifth pipeline 117, wherein the condensate outlet of the main steam trap 110 is connected to the water inlet of the local condensate storage tank through a steam trap pipeline, and a main steam trap drainage end check valve 112 is provided on the steam trap pipeline.

[0030] In the present application, a post-heat exchange condensate discharge one-way valve 113 is provided on the sixth pipeline 118 .

[0031] In the present application, the condensate local storage tank 200 is connected to the dehumidification system 300 via a dehumidification pipe 301 .

[0032] In the present application, a tank drain stop valve 501 is provided on the seventh pipeline 506 .

[0033] In the present application, a condensate local recycling pipeline stop valve 503 and a condensate local recycling pipeline one-way valve 504 are provided on the eighth pipeline 505 .

[0034] In the present application, a condensate recovery one-way valve 702 and a condensate recovery pump rear stop valve 701 are provided on the ninth pipeline 703 .

[0035] In this application, the sewage outlet of the local condensate storage tank 200 is connected to the sewage pipe network 400 through a tank sewage pipe 203, and a tank sewage stop valve 204 is provided on the tank sewage pipe.

[0036] Specific working principle:

[0037] Condensate recovery section of the steam-water separator:

[0038] After steam source 100 begins supplying steam, it passes through main steam shutoff valve 101 and steam filter 102 to steam separator 103. The separated steam condensate then flows through separator drain shutoff valve 104, separator drain-end check valve 105, and separator drain-end electric valve 106, entering local condensate storage tank 200. During this time, separator condensate direct discharge shutoff valve 107 remains closed. If necessary, such as for equipment maintenance, the separator drain-end electric valve 106 can be manually closed and the separator condensate direct discharge shutoff valve 107 on third pipeline 108 can be manually opened to discharge the steam condensate separated by separator 103 directly into the sewage pipe network 400.

[0039] Steam trap condensate recovery section:

[0040] After the steam-water separator 103 has initially separated steam, it passes through the steam pressure reducing valve 109 and enters the main steam trap 110. The steam condensate separated by the main steam trap 110 passes through the main steam trap discharge end check valve 112 on the drain line and enters the local condensate storage tank 200.

[0041] Heat exchanger condensate recovery section:

[0042] The steam separated from the water by the main steam trap 110 enters the heat exchanger (or gas-consuming or energy-consuming equipment) 111 directly or under control (control pipeline and valve group are not shown in the figure). The steam condenses after the heat exchange (work) is discharged through the condensate discharge check valve 113 on the sixth pipeline and enters the local condensate storage tank 200.

[0043] Local storage system:

[0044] The local condensate storage tank 200, in addition to being connected to the condensate recovery section of the steam-water separator, the condensate recovery section of the steam trap, and the condensate recovery section of the heat exchanger, has four external connection directions. The main external connection direction is the condensate recycling subsystem including the storage tank drain stop valve 501, the water pump 502, the condensate local recycling pipeline stop valve 503, the condensate recovery pump rear stop valve 504, the eighth pipeline 505, the condensate centralized storage tank 600, the condensate recovery pump rear stop valve 701, the condensate local recycling pipeline one-way valve 702, the ninth pipeline 703, and the condensate local recycling terminal 704.

[0045] Export and local recycling system:

[0046] The local condensate storage tank 200 is equipped with an electronic level gauge 201, which is primarily used to control the start and stop of the water pump 502. When the condensate is being output to the centralized condensate storage tank 600 or the local condensate reuse terminal 704, the water pump 502 starts when the electronic level gauge 201 detects that the condensate in the tank has reached a high level, and continues until the condensate level in the tank drops to the preset low level set by the electronic level gauge 201.

[0047] When the condensate is output to the centralized condensate storage tank 600, the stop valve 701 after the condensate recovery pump is opened and the stop valve 504 after the condensate recovery pump is closed. When the condensate is output to the local condensate reuse terminal 704, the stop valve 701 after the condensate recovery pump is closed and the stop valve 504 after the condensate recovery pump is opened.

[0048] In order to ensure that the condensate of the steam-using equipment is discharged without back pressure, the local condensate storage tank 200 is a static pressure tank with a moisture discharge pipe 301 on the top to transport the high-temperature moisture in the tank to the moisture discharge system 300.

[0049] To ensure system safety, the local condensate storage tank 200 is provided with a tank high-level overflow pipe 202 connected to the sewage pipe network 400.

[0050] To facilitate daily maintenance, a tank sewage pipe 203 connected to the sewage network 400 is provided at the bottom of the local condensate storage tank 200, and the opening and closing of the pipe is controlled by a tank sewage stop valve 204.

[0051] A condensate local return pipeline one-way valve 702 is installed in the pipeline system between the condensate local storage tank 200 and the condensate centralized storage tank 600. Its main function is to prevent abnormal cross-flow when other recovery systems pump condensate to the condensate centralized storage tank 600.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A steam condensate recovery and reuse system, characterized in that: The steam source is connected to the air inlet of the steam-water separator through a first pipeline, the steam condensate outlet at the bottom of the steam-water separator is connected to a second pipeline, the second pipeline is connected to a third pipeline and a fourth pipeline respectively, the third pipeline is connected to the sewage network, and the fourth pipeline is connected to the water inlet of the local condensate storage tank; The steam outlet of the steam-water separator is connected to the steam inlet of the heat exchanger through the fifth pipeline, and the condensate outlet of the heat exchanger is connected to the water inlet of the condensate local storage tank through the sixth pipeline; The condensate outlet of the local condensate storage tank is connected to the water pump inlet through the seventh pipeline, and the water pump outlet is connected through the eighth pipeline and the ninth pipeline respectively, where the other end of the eighth pipeline is connected to the water inlet of the condensate centralized storage tank, and the other end of the ninth pipeline is connected to the local condensate reuse terminal.

2. The steam condensate recovery and reuse system according to claim 1, characterized in that: A steam main stop valve and a steam filter are provided on the first pipeline.

3. The steam condensate recovery and reuse system according to claim 1, characterized in that: A steam-water separator drain stop valve is provided on the second pipeline, a steam-water separator condensate direct discharge stop valve is provided on the third pipeline, and a steam-water separator drain end one-way valve and a steam-water separator drain end electric valve are provided on the fourth pipeline.

4. The steam condensate recovery and reuse system according to claim 1, characterized in that: A steam pressure reducing valve and a main steam trap are provided on the fifth pipeline, wherein the condensate outlet of the main steam trap is connected to the water inlet of the local condensate storage tank through a steam trap pipeline, and a one-way valve at the drainage end of the main steam trap is provided on the steam trap pipeline.

5. The steam condensate recovery and reuse system according to claim 1, characterized in that: A one-way valve for discharging condensed water after heat exchange is provided on the sixth pipeline.

6. The steam condensate recovery and reuse system according to claim 1, characterized in that: The local condensate storage tank is connected to the dehumidification system through a dehumidification pipe.

7. The steam condensate recovery and reuse system according to claim 1, characterized in that: A tank drain stop valve is provided on the seventh pipeline.

8. The steam condensate recovery and reuse system according to claim 1, characterized in that: The eighth pipeline is provided with a condensate local recycling pipeline stop valve and a condensate local recycling pipeline one-way valve.

9. The steam condensate recovery and reuse system according to claim 1, characterized in that: A condensate recovery one-way valve and a stop valve after the condensate recovery pump are provided on the ninth pipeline.

10. The steam condensate recovery and reuse system according to claim 1, characterized in that: The sewage outlet of the local condensate storage tank is connected to the sewage network through a tank sewage pipe, and a tank sewage stop valve is provided on the tank sewage pipe.

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