Condensate water recovery system of fiber production line

Abstract

The utility model provides a condensate water recovery system of a fiber production line, which comprises a condensate water recovery unit connected with a spinning production unit and a spinning heating room of the fiber production line and used for collecting condensate water generated by the spinning production unit and condensate water generated by the spinning heating room; the condensate water treatment unit is connected with the condensate water recovery unit and is used for treating the condensate water recovered by the condensate water recovery unit; and the condensate water storage unit is connected with the condensate water treatment unit and is used for storing the condensate water treated by the condensate water treatment unit. By means of the design, condensate water generated by a spinning production unit and a spinning heating room in a fiber production line can be efficiently collected, treated and stored, waste of water resources is remarkably reduced, and improvement of the overall production efficiency is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of spinning, and in particular relates to a condensed water recovery system for a fiber production line. Background Art

[0002] In the prior art, the spinning unit of a fiber production line generates a large amount of condensed water, and the spinning and heating room also generates corresponding condensed water during the heating process. Typically, the condensed water generated by the spinning unit of the fiber production line and the condensed water generated by the spinning and heating room are recycled separately.

[0003] However, treating these two types of condensate separately presents numerous drawbacks. First, separate recycling leads to the duplication of water treatment equipment and systems, increasing initial investment and operational maintenance costs. Second, condensate from different sources varies in quality, and treating them separately may not achieve optimal resource utilization, resulting in water waste. Furthermore, separate treatment can complicate the plant's water circulation system, reducing overall water treatment efficiency and ease of management.

[0004] Therefore, designing a condensate recovery system for a fiber production line that uniformly purifies and reuses the condensate generated by the spinning production unit of the fiber production line and the condensate generated in the spinning heating room has become a technical problem that needs to be solved urgently by those skilled in the art.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a condensate recovery system for a fiber production line, thereby solving the problem of low recovery efficiency of the condensate recovery system of the prior art fiber production line.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A condensate water recovery system for a fiber production line comprises: a condensate water recovery unit, connected to a spinning production unit and a spinning heating room of the fiber production line, for collecting condensate water generated by the spinning production unit and the condensate water generated in the spinning heating room; a condensate water treatment unit, connected to the condensate water recovery unit, for treating the condensate recovered by the condensate water recovery unit; and a condensate water storage unit, connected to the condensate water treatment unit, for storing condensate treated by the condensate treatment unit.

[0009] Furthermore, the condensate water treatment unit includes: a mixed bed for removing anions and cations in the condensate water; and an iron removal filter arranged upstream of the mixed bed for removing iron ions in the condensate water.

[0010] Furthermore, a plate heat exchanger is provided between the condensate treatment unit and the condensate recovery unit for heat exchange of the condensate before treatment; the water outlet end of the plate heat exchanger is connected to the water inlet end of the iron removal filter, and a raw water pump is provided between the water inlet end of the plate heat exchanger and the water outlet end of the condensate recovery unit.

[0011] Furthermore, a backwash water pump is provided downstream of the mixed bed, and the water inlet end of the backwash water pump is connected to the external water source; a backwash valve is provided between the backwash water pump and the mixed bed, and the mixed bed is backwashed when the backwash valve is open; a wastewater outlet is provided on the mixed bed for discharging wastewater during the backwash process.

[0012] Furthermore, the condensed water storage unit includes a finished water tank; the water inlet end of the finished water tank is connected to the mixed bed; the water outlet end of the finished water tank is connected to the filtration station of the polymerization workshop, and / or, the stripping tower of the polymerization workshop, and / or, the water washing station of the spinning workshop.

[0013] Furthermore, the water outlet end of the finished water tank is respectively connected to the filtration station of the polymerization workshop, the stripping tower of the polymerization workshop and the water washing station of the spinning workshop, and a finished water pump is provided between the water outlet end of the finished water tank and the filtration station of the polymerization workshop, the stripping tower of the polymerization workshop and the water washing station of the spinning workshop for transporting the treated condensed water.

[0014] Furthermore, the condensate recovery unit includes: a raw water tank; a collecting pipe, the collecting pipe includes a first collecting pipe and a second collecting pipe, one end of the first collecting pipe is connected to the raw water tank, and the other end of the first collecting pipe is connected to the spinning production unit, one end of the second collecting pipe is connected to the raw water tank, and the other end of the second collecting pipe is connected to the spinning heating room.

[0015] Furthermore, one end of the first collecting pipeline away from the spinning production unit and one end of the second collecting pipeline away from the spinning heating room are respectively connected to the raw water tank; or, it also includes a confluence pipeline, one end of which is connected to the raw water tank, and the other end of the confluence pipeline is connected to the end of the first collecting pipeline away from the spinning production unit and one end of the second collecting pipeline away from the spinning heating room through a tee.

[0016] Furthermore, the condensed water generated by the spinning production unit at least includes the condensed water generated by the spinning solution recovery unit.

[0017] Furthermore, there is one mixed bed, or at least two mixed beds are provided.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0019] 1. The utility model sets a condensed water recovery unit, which is connected to the spinning production unit and the spinning heating room of the fiber production line to collect the condensed water generated by the spinning production unit and the condensed water generated in the spinning heating room. Combined with the condensed water treatment unit connected to the condensed water recovery unit and the condensed water storage unit connected to the condensed water treatment unit, which are sequentially arranged, the utility model can realize the efficient collection, treatment and storage of the condensed water generated by the spinning production unit and the spinning heating room in the fiber production line, significantly reduce the waste of water resources, and help to improve the overall production efficiency.

[0020] 2. The utility model can effectively remove iron ions in the condensate water by arranging the iron removal filter upstream of the mixed bed in the condensate water treatment unit, preventing the iron ions from contaminating and clogging the ion exchange medium in the subsequent mixed bed treatment process, thereby extending the service life of the mixed bed and maintaining its efficient ion exchange capacity.

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0023] Figure 1 This is a schematic flow chart of a condensate recovery system for a fiber production line in an embodiment of the present invention.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0028] In this embodiment, a condensate water recovery system for a fiber production line is provided, comprising a condensate water recovery unit, a condensate water treatment unit, and a condensate water storage unit that are connected in sequence.

[0029] Specifically, in this embodiment, the condensate recovery unit is connected to the spinning production unit and the spinning and heating room of the fiber production line to collect condensate generated during the spinning process. The spinning production unit generates condensate due to operations such as heating the raw liquid and cooling the spinning equipment. This condensate is transported to the condensate recovery unit via pipes. Similarly, the spinning and heating room also generates condensate when providing heating for the spinning environment. This condensate is also collected and transported to the condensate recovery unit via pipes, thereby ensuring the centralized recovery of condensate generated by the spinning production unit and the spinning and heating room.

[0030] Specifically, in this embodiment, the condensed water collected by the condensed water recovery unit enters the condensed water treatment unit for treatment. The condensed water treatment unit is used to remove impurities in the condensed water to ensure the cleanliness of the recovered water.

[0031] In this embodiment, the treated condensate is transported from the condensate treatment unit to a condensate storage unit for centralized storage. The condensate storage unit is made of corrosion-resistant materials to prevent the stored condensate from being contaminated again. The stored condensate can be reused according to production needs, further improving the recycling efficiency of water resources and achieving energy conservation and environmental protection.

[0032] Through the above method, the condensate recovery system of the fiber production line described in this embodiment can efficiently collect, process and store the condensate generated during the spinning production process, effectively reducing the waste of production water and reducing production costs.

[0033] In this embodiment, the condensate treatment unit includes an upstream iron removal filter to remove iron ions from the condensate. Before entering the mixed bed, the condensate is pre-treated by the iron removal filter to remove iron impurities, preventing interference with subsequent treatment processes and ensuring the stability of the condensate's quality.

[0034] In this embodiment, a mixed bed is located downstream of the iron removal filter to further remove anions and cations from the condensate. The mixed bed contains layers of anion and cation exchange resins. Through ion exchange, it effectively removes residual soluble salts and other ionic impurities from the condensate, further improving its purity. The treated condensate can be recycled, meeting the condensate quality requirements of fiber production lines.

[0035] Specifically, in this embodiment, since the condensate water delivery pipeline is a carbon steel pipeline, the carbon steel pipeline contains a high amount of iron ions. The iron ions contained in the condensate are further removed by the iron removal filter, so that the effluent meets the standard of primary desalted water; the effluent from the iron removal filter enters the mixed bed, which is an ion exchanger with mixed anion and cation resins. It is mainly used to further remove anions and cations in the primary desalted water to make the desalted water quality better. The treated water is generally called secondary desalted water. The effluent indicators of the mixed bed are silica ≤ 20ug / l and conductivity ≤ 0.3us / cm. The processing capacity of a single mixed bed is 175t / h, and the total processing capacity of two operations and one standby is 350t / h. The outlet water temperature of the mixed bed can reach 60-65°C. The main process production workshop can save cold desalted water and save the consumption of low-pressure steam.

[0036] Through the configuration of the above-mentioned condensate water treatment unit, the condensate water recovery system of the fiber production line in this embodiment can significantly remove iron ions and other ionic impurities in the condensate water, further improve the water quality, meet the condensate water usage requirements of the fiber production process, and effectively realize the reuse of water resources.

[0037] In this embodiment, a plate heat exchanger is further provided between the condensate treatment unit and the condensate recovery unit for heat exchange of the condensate before treatment; a raw water pump is provided between the water inlet end of the plate heat exchanger and the water outlet end of the condensate recovery unit, and the water outlet end of the plate heat exchanger is connected to the water inlet end of the iron removal filter, thereby further optimizing the condensate recovery system of the fiber production line.

[0038] Specifically, in this embodiment, a plate heat exchanger is disposed between the condensate recovery unit and the iron removal filter for performing heat exchange with the condensate before processing. Furthermore, the water inlet of the plate heat exchanger is connected to the condensate recovery unit via a raw water pump, and the condensate is transported from the condensate recovery unit to the plate heat exchanger. Before entering the iron removal filter, the heat contained in the condensate can be recovered through the heat exchange process of the plate heat exchanger, and the condensate temperature can be reduced to below 78°C, which facilitates the operating conditions for subsequent treatment of the condensate. This not only improves the processing efficiency of the iron removal filter and the mixed bed, but also recovers some heat energy to provide preheating or insulation support for other processes in the production process, further improving energy utilization, thereby reducing the operating cost and energy consumption of the fiber production line.

[0039] In this embodiment, a backwash water pump is provided downstream of the mixed bed, the water inlet end of the backwash water pump is connected to an external water source, a backwash valve is provided between the backwash water pump and the mixed bed, and the mixed bed is backwashed when the backwash valve is open; a wastewater outlet is provided on the mixed bed for discharging the wastewater after the backwash water pump backwashes the mixed bed.

[0040] Specifically, in this embodiment, the backwash pump's water inlet is connected to an external water source to provide clean water for backwashing. During backwashing, the pump delivers clean water from the external source to the mixed bed to remove accumulated impurities and sediment. To prevent backwash water from flowing back into other parts of the condensate recovery system, a backwash valve is installed between the backwash pump and the mixed bed. During backwashing, the valve remains open, allowing backwash water to enter the mixed bed and complete the backwash process. Upon completion, the valve automatically closes.

[0041] In addition, the wastewater outlet set on the mixed bed is used to discharge the wastewater generated during the backwashing process. Through the wastewater outlet, the wastewater with impurities after backwashing can be discharged from the system in time.

[0042] When the condensate recovery system operates normally, the condensate flows through the mixed bed for ion exchange treatment, and the treated water continues to enter the condensate storage unit; when backwashing is required, the control valve is switched, the backwash valve is opened, and the backwash mode of the backwash water pump is started, so that the water flows in reverse to flush the mixed bed, and the impurities and saturated resin adsorbed in the mixed bed are taken out. Subsequently, the wastewater containing impurities is discharged through the wastewater outlet connected to the sewage pipe.

[0043] In addition, the condensate recovery system of the fiber production line further includes acid and alkali storage tanks, acid and alkali metering boxes, acid and alkali regeneration liquid pumps, acid and alkali unloading pumps, acid and alkali reservoirs, power distribution devices and automatic control systems to achieve integrated management of acid and alkali regeneration, backwashing and automatic control. Furthermore, the acid and alkali storage tanks are used to store acid and alkali solutions, and the acid and alkali metering boxes accurately measure the acid and alkali solutions, and deliver the appropriate amount of acid and alkali solutions to the mixed bed for regeneration. The acid and alkali regeneration liquid pump is responsible for delivering the acid and alkali solutions to the required regeneration location to ensure the efficiency of the regeneration process. The acid and alkali unloading pump connects the acid and alkali reservoir and the acid and alkali storage tanks to facilitate the replenishment and transfer of acid and alkali solutions. The power distribution device provides power support for each component of the system, and the automatic control system achieves precise management of acid and alkali metering, delivery and mixed bed backwashing through automatic monitoring and control, ensuring the safe, efficient and stable operation of the system.

[0044] The above configuration enables efficient management of the acid-base regeneration and backwash processes, improves the automation level of the system, and ensures the continuous stability and quality of condensate treatment.

[0045] In this embodiment, the condensed water storage unit includes a finished water tank; the water outlet end of the finished water tank is connected to the filtration station of the polymerization workshop, and / or the stripping tower of the polymerization workshop, and / or the water washing station of the spinning workshop. By flexibly transporting the treated condensed water to different water use points in the production process, the recycling of water resources is fully realized.

[0046] Specifically, in this embodiment, the finished product water tank is used to store qualified condensate treated by the condensate treatment unit. The outlet of the finished product water tank can be connected to the filtration station in the polymerization workshop, allowing the recovered condensate to be used to meet the filtration station's water needs, thereby reducing fresh water usage. Alternatively, the outlet of the finished product water tank can be connected to the stripping tower in the polymerization workshop, allowing the treated condensate to be used as process water for the stripping tower, further reducing the production process's reliance on external water sources. Alternatively, the outlet of the finished product water tank can be connected to the washing station in the spinning workshop, allowing the recovered water to be used for washing operations in the spinning process, ensuring the cleanliness of the spun products and enabling water recycling. This effectively conserves water resources and achieves efficient recycling of condensate during fiber production.

[0047] To be more specific, in this embodiment, the water outlet end of the finished water tank is respectively connected to the filter post of the polymerization workshop, the steam stripping tower of the polymerization workshop and the water washing post of the spinning workshop. In order to achieve efficient transportation of the treated condensed water, a finished water pump is provided between the water outlet end of the finished water tank and the filter post of the polymerization workshop, the steam stripping tower of the polymerization workshop and the water washing post of the spinning workshop. The finished water pump is used to transport the treated condensed water stored in the finished water tank, that is, the cold desalted water, to the filter post and steam stripping tower of the polymerization workshop and the water washing post of the spinning workshop to meet the water demand of different links in the production process, while ensuring the timely transportation of the condensed water and the stability of the flow rate, thereby ensuring the water volume and water pressure requirements of each process.

[0048] In this embodiment, the condensate recovery unit includes a raw water tank for temporarily storing condensate collected from the spinning production unit and the spinning heating room; it also includes a collecting pipe, the collecting pipe includes a first collecting pipe and a second collecting pipe, one end of the first collecting pipe is connected to the raw water tank, and the other end of the first collecting pipe is connected to the spinning production unit, one end of the second collecting pipe is connected to the raw water tank, and the other end of the second collecting pipe is connected to the spinning heating room.

[0049] Specifically, in this embodiment, the end of the first collection pipe away from the spinning unit is connected to the raw water tank, used to collect condensed water generated by the spinning unit and transport it to the raw water tank. This first collection pipe effectively directs condensed water generated during the spinning process directly into the raw water tank, preventing condensed water from being retained and wasted. Simultaneously, the end of the second collection pipe away from the spinning and heating room is connected to the raw water tank, used to collect condensed water generated in the spinning and heating room and transport it to the raw water tank.

[0050] In another specific embodiment, the collection pipeline further includes a confluence pipeline, one end of which is connected to the raw water tank, and the other end of which is connected via a tee to the end of the first collection pipeline distal to the spinning production unit and the end of the second collection pipeline distal to the spinning and heating room. The confluence pipeline allows condensed water from different sources (i.e., condensed water from the spinning production unit and condensed water from the spinning and heating room) to be collected into a single pipeline and then transported to the raw water tank for centralized storage and subsequent processing.

[0051] By connecting the confluence pipes, the condensate collection path is further simplified, avoiding the crossing and redundant design of the pipes, and enabling the efficient collection of the condensate generated in the spinning production unit and the spinning heating room, ensuring the continuous flow and timely collection of the condensate, which helps to improve the processing efficiency and reliability of the entire condensate recovery system.

[0052] In this embodiment, the condensed water generated by the spinning production unit includes at least the condensed water generated by the spinning solution recovery unit. Furthermore, the spinning solution recovery unit generates condensed water during the spinning production process. This condensed water contains a certain amount of heat and a small amount of dissolved substances and needs to be processed and recovered by the condensed water recovery system.

[0053] In this embodiment, at least the delivery and collection lines between the outlet of the raw water tank and the iron removal filter are constructed of carbon steel. Carbon steel, with its high strength and excellent corrosion resistance, is suitable for transporting trace chemical components and impurities that may be present in condensed water, thereby ensuring that the lines are less susceptible to corrosion and damage during long-term operation. By utilizing carbon steel piping, the condensed water recovery system in this embodiment achieves higher reliability in the critical transport link, avoiding system failures or leaks caused by material corrosion, and further ensuring the flowability and water quality stability of the condensed water throughout the recovery process.

[0054] In some specific embodiments, the conveying pipelines, collecting pipelines and other pipelines used in the condensate recovery system of the fiber production line are all carbon steel pipelines.

[0055] In this embodiment, the fiber production line's condensate recovery system includes one, or at least two, mixed beds. Alternatively, three mixed beds may be provided, with two in operation and one in standby. Specifically, a single-bed system is suitable for smaller production lines, ensuring that condensate is treated with ion exchange to remove anionic and cationic impurities and meet water quality standards for reuse. A dual-bed system allows one mixed bed to operate while the other undergoes regeneration or maintenance, ensuring continuous system operation and preventing interruptions to the entire condensate recovery system due to downtime of a single mixed bed.

[0056] In one specific embodiment, the system is configured with three mixed beds, two of which operate simultaneously to share the processing load, meeting the high demand for recovered water of 120-150 tons / hour. The third mixed bed serves as a backup bed. If any operating mixed bed requires backwashing or maintenance, the backup bed can immediately take over, ensuring system stability and continuity. By configuring multiple mixed beds, particularly a three-bed configuration with two in operation and one in standby, the condensate recovery system not only improves processing capacity and system stability, but also extends the equipment's service life, ensuring efficient operation even during high loads or maintenance periods. This achieves efficient recycling of condensate from the fiber production line and maximizes resource utilization.

[0057] In this embodiment, to address the condensate recovery needs of the spinning production line, condensate generated by the 5,000-ton spinning production unit and the condensate generated in the 40,000-ton and 150,000-ton spinning and heating rooms are centrally recovered, with a total recovery rate of approximately 120-150 tons per hour. The condensate from the spinning production unit and the heating room is collected and transported to the raw water tank of the condensate recovery unit. From the raw water tank, it enters the condensate treatment unit for further treatment and purification. The treated condensate becomes secondary demineralized water, which is then stored in the finished water tank of the condensate storage unit.

[0058] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A condensate recovery system for a fiber production line, characterized in that: include: A condensed water recovery unit is connected to the spinning production unit and the spinning heating room of the fiber production line, and is used to collect condensed water generated by the spinning production unit and the spinning heating room; a condensed water treatment unit connected to the condensed water recovery unit and used for treating the condensed water recovered by the condensed water recovery unit; The condensed water storage unit is connected to the condensed water treatment unit and is used to store the condensed water generated after being treated by the condensed water treatment unit.

2. The condensate recovery system for a fiber production line according to claim 1, characterized in that: The condensate treatment unit includes: Mixed bed, used to remove anions and cations from condensate; The iron removal filter is installed upstream of the mixed bed to remove iron ions in the condensate.

3. The condensate recovery system for a fiber production line according to claim 2, characterized in that: A plate heat exchanger is also provided between the condensed water treatment unit and the condensed water recovery unit for heat exchange of the condensed water before treatment; The water outlet of the plate heat exchanger is connected to the water inlet of the iron removal filter, and a raw water pump is provided between the water inlet of the plate heat exchanger and the water outlet of the condensate recovery unit.

4. The condensate recovery system for a fiber production line according to claim 3, characterized in that: A backwash water pump is provided downstream of the mixed bed, and the water inlet of the backwash water pump is connected to an external water source; A backwash valve is installed between the backwash water pump and the mixed bed, and the mixed bed is backwashed when the backwash valve is open; A wastewater outlet is provided on the mixed bed to discharge wastewater during the backwash process.

5. The condensate recovery system for a fiber production line according to claim 4, characterized in that: The condensate storage unit includes a finished water tank; The water inlet of the finished product water tank is connected to the mixed bed; the water outlet of the finished product water tank is connected to the filtering station of the polymerization workshop, and / or the stripping tower of the polymerization workshop, and / or the water washing station of the spinning workshop.

6. The condensate recovery system for a fiber production line according to claim 5, characterized in that: The outlet end of the finished water tank is connected to the filtration station of the polymerization workshop, the stripping tower of the polymerization workshop and the water washing station of the spinning workshop respectively, and a finished water pump is installed between the outlet end of the finished water tank and the filtration station of the polymerization workshop, the stripping tower of the polymerization workshop and the water washing station of the spinning workshop for transporting hot desalted water.

7. The condensate recovery system for a fiber production line according to any one of claims 1 to 6, characterized in that: The condensate recovery unit includes: Raw water tank; The collecting pipeline includes a first collecting pipeline and a second collecting pipeline. One end of the first collecting pipeline is connected to the raw water tank, and the other end of the first collecting pipeline is connected to the spinning production unit. One end of the second collecting pipeline is connected to the raw water tank, and the other end of the second collecting pipeline is connected to the spinning heating room.

8. The condensate recovery system for a fiber production line according to claim 7, characterized in that: One end of the first collecting pipe away from the spinning production unit and one end of the second collecting pipe away from the spinning heating room are respectively connected to the raw water tank; or, It also includes a confluence pipe, one end of which is connected to the raw water tank, and the other end of which is connected to the end of the first collecting pipe away from the spinning production unit and the end of the second collecting pipe away from the spinning heating room through a tee.

9. The condensate recovery system for a fiber production line according to any one of claims 1 to 6, characterized in that: The condensed water generated by the spinning production unit at least includes the condensed water generated by the spinning solution recovery unit.

10. The condensate recovery system for a fiber production line according to any one of claims 2 to 6, characterized in that: There is one mixed bed, or at least two mixed beds are provided.

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