Steam condensation water system

Abstract

The utility model relates to a steam condensation water system, which is characterized in that a water collecting tank is respectively connected with a high-pressure condensation water tank and a low-pressure condensation water tank through pipelines, the low-pressure condensation water tank is connected with a booster pump through a pipeline, and the outlet end of the booster pump is connected with a reversing valve through a pipeline after being converged with the high-pressure condensation water tank; the reversing valve is connected with the air cooler and the heat exchanger through pipelines, the heat exchanger is connected with the filter through a pipeline, and the filter is connected with the cooling pool through a pipeline; according to the scheme provided by the utility model, condensed water at different temperatures is collected through the water collecting tank, and various available steam condensed water is fully recovered through primary treatment in the high-pressure condensed water tank and the low-pressure condensed water tank, so that the benefit of heat recovery is increased, and the pressure, flow and superheat degree of secondary steam of the flash tank can be effectively controlled; and high-pressure condensed water can be used for heat exchange and filtration in cooperation with a heat exchanger, reduction treatment of heat recovery is effectively guaranteed, and sufficient recovery and load regulation of the condensed water are guaranteed.

Description

Technical Field

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

[0002] The recycling of steam condensate is an important measure for energy conservation and emission reduction, and it has a positive role in promoting energy conservation and consumption reduction, environmental protection and rational use of water resources. On the one hand, steam used in industrial processes will be polluted to varying degrees; on the other hand, one of the main forms of condensate heat recovery is to recover secondary steam through flash tanks, but under the current conventional technology, the flow, pressure and superheat of the secondary steam obtained by flash evaporation of condensate in the flash tank are uncontrollable, resulting in the parameters of the secondary steam cannot meet the needs of process use, greatly reducing the benefits of heat recovery. Utility Model Content

[0003] In order to solve or partially solve the problems existing in the related technology, the solution provided by the utility model collects condensate of different temperatures through a water collecting cylinder, and fully recovers various usable steam condensate through preliminary treatment in a high-pressure condensate tank and a low-pressure condensate tank, thereby increasing the efficiency of heat recovery, and can effectively control the pressure, flow rate and superheat of the secondary steam in the flash tank. In conjunction with a heat exchanger, high-pressure condensate can be used for heat exchange and filtration, effectively ensuring the reduction of heat recovery processing, and ensuring the full recovery of condensate and load regulation.

[0004] The first aspect of the utility model provides a steam condensate system.

[0005] A steam condensate system, characterized by comprising a water collecting tank, a high-pressure condensate tank, a low-pressure condensate tank, a booster pump, a reversing valve, an air cooler, and a heat exchanger;

[0006] The water collecting cylinder is connected to the high-pressure condensate tank and the low-pressure condensate tank through pipelines, the low-pressure condensate tank is connected to the booster pump through a pipeline, the outlet end of the booster pump is connected to the reversing valve after being collected with the high-pressure condensate tank through a pipeline, the reversing valve is connected to the air cooler and the heat exchanger through pipelines, the heat exchanger is connected to the filter through a pipeline, and the filter is connected to the cooling tank through a pipeline.

[0007] Optionally, a regulating valve and a pressure reducing valve arranged in parallel are also installed at the inlet end of the high-pressure condensate tank, the pipelines of the regulating valve and the pressure reducing valve are interconnected, and the regulating valve is connected to the heat exchanger through the pipeline.

[0008] Optionally, a regulating valve and a pressure reducing valve arranged in parallel are also installed at the inlet end of the low-pressure condensate tank, the pipelines of the regulating valve and the pressure reducing valve are interconnected, and the regulating valve is connected to the heat exchanger through the pipeline.

[0009] Optionally, the high-pressure condensate tank is connected to a sewage heater via a pipeline, and the sewage heater inlet is also connected to a steam pipe, and the sewage heater outlet is also connected to a sewage tank.

[0010] The technical solution provided by the utility model may have the following beneficial effects:

[0011] The solution provided by the utility model collects condensate of different temperatures through a water collecting cylinder, and fully recovers various usable steam condensate by performing preliminary treatment in a high-pressure condensate tank and a low-pressure condensate tank, thereby increasing the efficiency of heat recovery, and can effectively control the pressure, flow rate and superheat of the secondary steam in the flash tank. In conjunction with a heat exchanger, high-pressure condensate can be used for heat exchange and filtration, effectively ensuring the reduction of heat recovery processing, and ensuring the full recovery of condensate and load regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0014] Figure numerals: 1-water collecting tank, 2-high-pressure condensate tank, 3-low-pressure condensate tank, 4-regulating valve, 5-pressure reducing valve, 6-boosting pump, 7-steam pipe, 8-sewage heater, 9-sewage tank, 10-reversing valve, 11-air cooler, 12-heat exchanger, 13-filter, 14-cooling tank. DETAILED DESCRIPTION

[0015] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0016] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0017] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0019] At present, steam used in industrial processes will be polluted to varying degrees. One of the main forms of condensate heat recovery is to recover secondary steam through a flash tank. However, under current conventional technology, the flow rate, pressure and superheat of the secondary steam obtained by flashing condensate in a flash tank are uncontrollable, resulting in the parameters of the secondary steam being unable to meet the requirements of process use, greatly reducing the benefits of heat recovery.

[0020] In view of the above problems, the solution provided by the utility model collects condensate of different temperatures through a water collecting cylinder, and fully recovers various usable steam condensate through preliminary treatment in a high-pressure condensate tank and a low-pressure condensate tank, thereby increasing the efficiency of heat recovery, and can effectively control the pressure, flow rate and superheat of the secondary steam in the flash tank. In conjunction with a heat exchanger, high-pressure condensate can be used for heat exchange and filtration, effectively ensuring the reduction of heat recovery processing, and ensuring the full recovery of condensate and load regulation.

[0021] The technical solution of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0022] See also Figure 1 The utility model provides a steam condensate system device, including a water collecting cylinder 1, a high-pressure condensate tank 2, a low-pressure condensate tank 3, a booster pump 6, a reversing valve 10, an air cooler 11, and a heat exchanger 12;

[0023] In this embodiment, the water collecting cylinder 1 is connected to the high-pressure condensate tank 2 and the low-pressure condensate tank 3 through pipelines, the low-pressure condensate tank 3 is connected to the booster pump 6 through a pipeline, the outlet end of the booster pump 6 is connected to the reversing valve 10 through a pipeline after being collected with the high-pressure condensate tank 2, the reversing valve 10 is connected to the air cooler 11 and the heat exchanger 12 through pipelines, the heat exchanger 12 is connected to the filter 13 through a pipeline, and the filter 13 is connected to the cooling tank 14 through a pipeline. In the specific implementation process, 0.55-0.65MPa condensate is transported from the reboiler of the high-pressure distillation tower to the water collecting cylinder 1, and the low-pressure condensate entering the water collecting cylinder 1 enters the low-pressure condensate tank 3 through the pipeline. The low-pressure condensate in the low-pressure condensate tank 3 is pressurized by the booster pump 6, and then is transported to the heat exchanger 12 together with the high-pressure condensate entering the high-pressure condensate tank 2 through the reversing valve. After heat exchange and cooling, it is filtered through the filter 13 and enters the cooling pool 14 for storage. In this embodiment, the filter 13 can be a sand filter 13. The air cooler 11 is connected through the reversing valve 10, and the low-pressure condensate pressurized by the booster pump 6 and the high-pressure condensate in the high-pressure condensate tank 2 can be merged into the air cooler 11, and then cooled to 50-60°C by the air cooler 11 and transported to the circulating water field as circulating water replenishment.

[0024] Specifically, in this embodiment, the inlet end of the high-pressure condensate tank 2 is also equipped with a regulating valve 4 and a pressure reducing valve 5 arranged in parallel, the pipelines of the regulating valve 4 and the pressure reducing valve 5 are interconnected, and the regulating valve 4 is connected to the heat exchanger 12 through a pipeline. The inlet end of the low-pressure condensate tank 3 is also equipped with a regulating valve 4 and a pressure reducing valve 5 arranged in parallel, the pipelines of the regulating valve 4 and the pressure reducing valve 5 are interconnected, and the regulating valve 4 is connected to the heat exchanger 12 through a pipeline. After the high-pressure condensate (high-pressure condensate of different temperatures) is transported to the water collecting tank 1 for uniform mixing, the output condensate is divided into two paths, one path is reduced in pressure by the pressure reducing valve 5 and enters the high-pressure condensate tank 2 or the low-pressure condensate tank 3 to generate secondary steam, and the other path enters the inner coil of the high-pressure condensate tank 2 or the low-pressure condensate tank 3 through the regulating valve 4 for heat exchange and then enters the heat exchanger 12 for secondary heat exchange, and the water after the heat exchange is discharged from the preheated water outlet of the heat exchanger 12. The regulating valve 4 indirectly regulates the high-pressure condensate flow and the low-pressure condensate flow to the pressure reducing valve 5, and also regulates the flow of secondary steam generated in the high-pressure condensate tank 2 and the low-pressure condensate tank 3 after the high-pressure condensate is decompressed. In this embodiment, the regulating valve 4 and the pressure reducing valve 5 are both connected to the PLC.

[0025] In this embodiment, the high-pressure condensate tank 2 is connected to a sewage heater 8 through a pipeline, and the inlet of the sewage heater 8 is also connected to a steam pipe 7, and the outlet of the sewage heater 8 is connected to a sewage pool 9. In this embodiment, the steam pipe 7 transports 1.0MPa steam, and the secondary steam flashed at the top of the high-pressure condensate tank 2 is now transported to the sewage treatment plant to replace the original 1.0MPa steam to heat the sewage, which can effectively reduce the consumption of 1.0MPa steam (about 2736t / a), and can make full use of the thermal energy of the secondary steam, while collecting and treating the generated sewage.

[0026] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A steam condensate system, characterized in that: Including water collecting tank, high pressure condensate tank, low pressure condensate tank, booster pump, reversing valve, air cooler, heat exchanger; The water collecting cylinder is connected to the high-pressure condensate tank and the low-pressure condensate tank through pipelines, the low-pressure condensate tank is connected to the booster pump through a pipeline, the outlet end of the booster pump is connected to the reversing valve after being collected with the high-pressure condensate tank through a pipeline, the reversing valve is connected to the air cooler and the heat exchanger through pipelines, the heat exchanger is connected to the filter through a pipeline, and the filter is connected to the cooling tank through a pipeline.

2. The steam condensate system according to claim 1, characterized in that: The inlet end of the high-pressure condensate tank is also equipped with a regulating valve and a pressure reducing valve arranged in parallel, the pipelines of the regulating valve and the pressure reducing valve are interconnected, and the regulating valve is connected to the heat exchanger through the pipeline.

3. The steam condensate system according to claim 1 or 2, characterized in that: The inlet end of the low-pressure condensate tank is also equipped with a regulating valve and a pressure reducing valve arranged in parallel, the pipelines of the regulating valve and the pressure reducing valve are interconnected, and the regulating valve is connected to the heat exchanger through the pipeline.

4. The steam condensate system according to claim 3, characterized in that: The high-pressure condensate tank is connected to a sewage heater through a pipeline, and the sewage heater inlet is also connected to a steam pipe, and the sewage heater outlet is also connected to a sewage pool.

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