A steam condensate water makeup line for an evaporative condenser tank

Abstract

The utility model discloses a steam condensate water supplement pipeline for evaporative condensate tank, including condensate pipe, first gate valve, second gate valve, check valve, one end of condensate pipe is communicated with the export end of steam condensing pump, and the other end is communicated with the desalted water input pipeline of evaporative condensate tank, first gate valve, second gate valve, check valve are set gradually on condensate pipe. The utility model discloses a pipeline is added to the evaporative condensate tank at the steam condensing pump export, because the quality of the steam condensate water of acrylic fibre recovery device is better, and the nature is similar with desalted water, when finding that evaporative condensate tank liquid level is too low, replaces desalted water with steam condensate water, and is supplemented to evaporative condensate tank, can save the desalted water amount greatly, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steam condensate reuse technology, specifically to a steam condensate replenishment pipeline for an evaporation condensate tank. Background Technology

[0002] The acrylonitrile fiber recycling unit is not merely an environmental protection facility; it is a key production unit integrating resource recycling, cost control, environmental compliance, and production assurance. Its core value lies in transforming "waste" from the production process back into valuable raw materials (NaSCN solution) and byproducts (oligomers), while significantly reducing the consumption of fresh resources and the pressure of end-of-pipe treatment. It is an indispensable technological support for achieving economic efficiency and environmental friendliness in acrylonitrile production. Its stable and efficient operation directly affects the market competitiveness of acrylonitrile products and the sustainable development capabilities of enterprises. Currently, the acrylonitrile recycling unit only has one evaporation condensate system for washing in the spinning unit. The acrylonitrile spinning unit is the technological hub of its acrylonitrile industry chain, converting polymers into high-value fiber products through a precisely controlled wet spinning process. However, the amount of evaporation condensate cannot meet production requirements. Currently, demineralized water is used to supplement production, but this further increases production costs.

[0003] The above problems urgently need to be solved. To address this, a steam condensate replenishment pipeline for evaporative condensate tanks is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem that the current acrylic fiber recycling device only has one evaporation condensate pipeline to the spinning device for water washing, but the amount of evaporation condensate cannot meet the production requirements, and the production cost will be further increased by using demineralized water to supplement it. The present invention provides a steam condensate supplement pipeline for the evaporation condensate tank.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: the utility model includes a condensate pipe, a first gate valve, a second gate valve, and a check valve. One end of the condensate pipe is connected to the outlet end of the steam condensate pump, and the other end is connected to the demineralized water input pipeline of the evaporation condensate tank. The first gate valve, the second gate valve, and the check valve are sequentially arranged on the condensate pipe.

[0006] Furthermore, a condensate drain line is also provided on the condensate pipe, with one end of the condensate drain line located between the first gate valve and the second gate valve.

[0007] Furthermore, a condensate drain valve is installed on the condensate drain pipeline.

[0008] Compared with the prior art, this utility model has the following advantages: by adding a pipeline from the outlet of the steam condensate pump to the evaporation condensate tank, since the steam condensate of the acrylonitrile recovery device has good quality and is similar in nature to demineralized water, when the liquid level of the evaporation condensate tank is found to be too low, the steam condensate can be used to replace the demineralized water and replenish the evaporation condensate tank, which can greatly save the amount of demineralized water used and reduce the production cost. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the steam condensate replenishment pipeline used in the evaporation condensate tank in this embodiment of the present invention. Detailed Implementation

[0010] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0011] like Figure 1 As shown, this embodiment provides a technical solution: a steam condensate replenishment pipeline for an evaporative condensate tank, comprising: a condensate pipe 2, a first gate valve 21, a second gate valve 22, and a check valve 23. One end of the condensate pipe 2 is connected to the outlet end of the steam condensate pump 1, and the other end is connected to the demineralized water input pipeline 31 of the evaporative condensate tank 3. The first gate valve 21, the second gate valve 22, and the check valve 23 are sequentially arranged on the condensate pipe 2. The first gate valve 21 and the second gate valve 22 are both root shut-off valves, which serve to switch the flow. When the distance is short, only one needs to be set. The check valve 23 is a check valve to prevent demineralized water from entering the condensate pipeline system.

[0012] In this embodiment, a condensate drain line 24 is also provided on the condensate pipe 2. One end of the condensate drain line 24 is located between the first gate valve 21 and the second gate valve 22. The condensate drain line 24 is used to drain the medium in the pipe when start-up or shutdown is required.

[0013] In this embodiment, a condensate draining valve 241 is provided on the condensate draining pipeline 24 to control the start and stop of the condensate draining operation.

[0014] In this embodiment, the number of steam condensing pumps 1 is at least one. If there are multiple steam condensing pumps 1, they are connected in parallel. The inlet end of the steam condensing pump 1 is fed with the first-effect evaporation steam condensate from the acrylonitrile recovery device, and the outlet end is respectively provided with three pipelines connected to it, namely the main power process pipeline 11, the delayed process pipeline 12, and the gel decolorization process pipeline 13.

[0015] In this embodiment, the evaporation condensate tank 3 is equipped with a demineralized water input pipeline 31, an evaporation condensate input pipeline 32, and an evaporation condensate output pipeline 33. The demineralized water input pipeline 31 is used to obtain primary demineralized water from the main pipe, the evaporation condensate input pipeline 32 is used to obtain evaporation condensate from the main pipe, and the evaporation condensate output pipeline 33 is used to output the evaporation condensate or primary demineralized water to the spinning device for washing.

[0016] In summary, the steam condensate replenishment pipeline for the evaporation condensate tank, by adding a pipeline from the steam condensate pump outlet to the evaporation condensate tank, utilizes the high quality of the steam condensate from the acrylonitrile recovery unit, which is similar in nature to demineralized water. When the evaporation condensate tank level is found to be too low, steam condensate can be used to replace demineralized water and replenish the evaporation condensate tank, which can greatly save the amount of demineralized water used and reduce production costs. After being put into operation, according to the consumption data provided by production, the amount of demineralized water used can be reduced by about 2,500 tons per year, and the energy consumption reduction is equivalent to 2.5 tons of standard oil per year.

[0017] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A steam condensate replenishment pipeline for an evaporative condensate tank, characterized in that, include: The system includes a condensate pipe, a first gate valve, a second gate valve, and a check valve. One end of the condensate pipe is connected to the outlet of the steam condensate pump, and the other end is connected to the demineralized water input pipeline of the evaporating condensate tank. The first gate valve, the second gate valve, and the check valve are sequentially installed on the condensate pipe.

2. The steam condensate replenishment pipeline for an evaporative condensate tank according to claim 1, characterized in that: The condensate pipe is also equipped with a condensate drain line, one end of which is located between the first gate valve and the second gate valve.

3. A steam condensate replenishment pipeline for an evaporative condensate tank according to claim 2, characterized in that: A condensate drain valve is installed on the condensate drain pipeline.

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