Condensate water recycling device

Abstract

The utility model provides a condensate water recycling device, and relates to the technical field of carbon fiber manufacturing equipment. The condensate water recycling device comprises a steam generator, at least one drying assembly, at least one heating assembly, a water storage tank and a condensate water recycling assembly, and the steam generator is used for generating saturated steam and supplying the saturated steam to the drying assembly and the heating assembly through a steam pipeline; the drying assembly is used for drying the washed and sized carbon fibers, and the heating assembly is used for keeping the temperature of a carbon fiber winding section; the drying assembly and the heating assembly communicate with the water storage pool through recycling pipelines so that generated condensate water can be recycled, and the water storage pool conveys the condensate water to the condensate water recycling assembly through a conveying pipeline to be recycled. The device can effectively recover and reuse condensate water generated in the carbon fiber production process, improves the production stability, ensures the product quality, reduces the production cost and is beneficial to environmental protection.

Description

Technical Field

[0001] This application relates to the technical field of carbon fiber manufacturing equipment, and more specifically, to a condensate recovery and reuse device. Background Art

[0002] The production process of carbon fiber usually includes processes such as raw fiber forming, pre-oxidation, carbonization, surface treatment, water washing, sizing, drying, and winding. Among them, after the carbon fiber tow undergoes the two processes of water washing and sizing, it is in a wet state and needs to be dried through a drying cylinder and a drying furnace to dry the water in the sizing agent, form a film of the sizing agent on the surface of the carbon fiber, endow the carbon fiber with a certain degree of bundling, increase the surface gloss, lubricity of the carbon fiber, maintain good stiffness, and reduce hairiness. During the drying process, if too much condensate accumulates in the drying cylinder, the steam pressure will not meet the standard, and the temperature cannot reach the set value, resulting in the wet carbon fiber not being able to reach the dry state, and then the wet carbon fiber will stick to the drying cylinder due to the viscosity of the sizing agent, forming a large area of wire entanglement. Even if wire entanglement is not caused, the wound carbon fiber finished product will also be sticky, resulting in abnormal wire unwinding during subsequent use.

[0003] In addition, when the carbon fiber enters the last process of winding, if the on-site temperature is too low, the quality of the carbon fiber tow will become hard, and when passing through the driving roller and the wire guiding wheel of the winding machine, the wire quality will be bent and become hairy. And the increase in the hairiness grade will reduce the selling price of the carbon fiber and affect the profit. Currently, using steam heating for temperature rise is the most economical and effective heating method, but if too much condensate accumulates in the steam pipeline, resulting in the steam temperature not meeting the standard, it will affect the heating effect and increase the hairiness grade of the carbon fiber. Summary of the Utility Model

[0004] To solve the above technical problems, the purpose of this application is to provide a condensate recovery and reuse device, which can effectively recover and reuse the condensate generated during the carbon fiber production process, improve production stability, ensure product quality, and reduce production costs.

[0005] In a first aspect, an embodiment of this application provides a condensate recovery and reuse device, including a steam generator, at least one drying component, at least one heating component, a reservoir, and a condensate reuse component. The steam generator is used to generate saturated steam and supply saturated steam to the drying component and the heating component respectively through a steam pipeline. The drying component is used to dry the carbon fiber after water washing and sizing treatments. The heating component is used to maintain the temperature of the carbon fiber winding section. The drying component and the heating component are respectively connected to the reservoir through a recovery pipeline to recover the generated condensate, and the reservoir transports the condensate to the condensate reuse component through a delivery pipeline for reuse.

[0006] The condensate recovery and reuse device provided in this application connects the drying component and the heating component through a designed recovery pipeline, which can effectively handle the condensate accumulated in the steam pipeline and a large amount of condensate accumulated in the drying cylinder, improve production stability, and ensure product quality. And by setting up a reservoir and a condensate reuse component, the recovered condensate can be reused, reducing water resource waste, contributing to environmental protection, and further reducing the production cost of carbon fiber.

[0007] In a possible implementation manner, the drying component includes a drying cylinder, a first intake pipeline, and a first drainage pipeline. The two opposite ends of the first intake pipeline are respectively connected to the steam pipeline and the drying cylinder, and are used to convey saturated steam into the drying cylinder; the two opposite ends of the first drainage pipeline are respectively connected to the drying cylinder and the recovery pipeline, and are used to discharge the condensate accumulated in the drying cylinder.

[0008] In the above technical solution, the carbon fiber tow after washing and sizing is wound on the surface of the drying cylinder and dried by the temperature provided by the saturated steam. The saturated steam can be continuously provided into the drying cylinder through the first intake pipeline, and the condensate can be discharged in time through the first drainage pipeline, preventing the drying cylinder from being unable to effectively dry the carbon fiber tow due to the accumulation of condensate.

[0009] In a possible implementation manner, the drying component further includes a siphon. The drying cylinder has a cavity, and the siphon is arranged in the cavity, and one end of the siphon extends out of the cavity and is connected to the first drainage pipeline, and is used to discharge the condensate from the cavity under the pressure of the saturated steam discharged into the cavity.

[0010] In the above technical solution, by setting the siphon, it can be ensured that the condensate in the cavity can be discharged in time.

[0011] In a possible implementation manner, the heating component includes a radiator, a second intake pipeline, and a second drainage pipeline. The two opposite ends of the second intake pipeline are respectively connected to the steam pipeline and the radiator, and are used to convey saturated steam to the radiator; the two opposite ends of the second drainage pipeline are respectively connected to the radiator and the recovery pipeline, and are used to discharge the condensate accumulated in the radiator.

[0012] In the above technical solution, the heating component is arranged in the winding section of the carbon fiber production line and is used for heating to ensure the temperature at the winding section site. By designing the second intake pipeline, the timely supply of saturated steam can be ensured, and the second drainage pipeline can ensure the timely discharge of condensate, preventing the steam temperature from not meeting the standard due to excessive accumulation of condensate.

[0013] In a possible implementation manner, the condensate recovery and reuse device further includes a plurality of branch pipelines. The number of drying components and heating components is multiple, and each drying component and heating component are jointly connected to a branch pipeline, and the plurality of branch pipelines are respectively connected to the recovery pipeline.

[0014] In the above technical solution, by setting multiple branch pipelines, the recycling of condensate water for multiple production lines and reverse flow can be carried out simultaneously, improving the recycling efficiency and reducing the production cost.

[0015] In a possible implementation, a water pump is further provided in the reservoir, and the water pump is connected to the recovery pipeline and the conveying pipeline.

[0016] In the above technical solution, by setting the water pump, the transfer of condensate water can be efficiently completed.

[0017] In a possible implementation, the connection methods of the water pump with the recovery pipeline and the conveying pipeline are both flange connections.

[0018] In a possible implementation, the reservoir is buried underground, a water tank is further provided in the reservoir, and the water pump is provided in the water tank.

[0019] In a possible implementation, the materials of the recovery pipeline and the conveying pipeline are independently stainless steel or carbon steel.

[0020] In a possible implementation, the condensate water reuse component includes an exhaust gas treatment absorption tower.

[0021] In the above technical solution, discharging the condensate water to the exhaust gas treatment absorption tower can reduce the water consumption in the exhaust gas treatment process and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of a condensate water recovery and reuse device provided by an embodiment of the present application;

[0024] Figure 2 For Figure 1 an enlarged structural diagram of the drying component in

[0025] Description of the attached reference numerals: 1#, 2#, 3#, 4# - production lines; 10 - steam generator; 12 - steam pipeline; 20 - drying assembly; 22 - drying cylinder; 221 - cavity; 24 - first intake pipeline; 26 - first drainage pipeline; 262 - siphon; 28 - rotating connector; 282 - flange; 284 - rotating bearing; 30 - heating-up assembly; 32 - radiator; 34 - second intake pipeline; 36 - second drainage pipeline; 40 - recovery pipeline; 42 - branch pipeline; 50 - reservoir; 52 - conveying pipeline; 54 - water pump; 60 - condensate reuse assembly; W - wall. Detailed implementation manner

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0027] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0029] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of the condensate recovery and reuse device provided by the embodiments of the present application. The condensate recovery and reuse device provided by the embodiments of the present application includes a steam generator 10, at least one drying assembly 20, at least one heating-up assembly 30, a reservoir 50 and a condensate reuse assembly 60. The steam generator 10 conveys saturated steam to the drying assembly 20 and the heating-up assembly 30 respectively through the steam pipeline 12. The drying assembly 20 is used to dry the carbon fiber after washing and sizing treatment. The heating-up assembly 30 is used to provide steam heating for the carbon fiber in the winding section to ensure the on-site temperature. The condensate generated by the drying assembly 20 and the heating-up assembly 30 is conveyed to the reservoir 50 for recovery through the recovery pipeline 40. The reservoir 50 then conveys the collected condensate to the condensate reuse assembly 60 that needs it through the conveying pipeline 52.

[0030] Figure 2 For Figure 1 is an enlarged structural diagram of the drying assembly 20 in Figure 1 and Figure 2, the drying assembly 20 includes a drying cylinder 22, a first intake pipe 24, and a first drain pipe 26. The opposite ends of the first intake pipe 24 are respectively connected to the steam pipe 12 and the drying cylinder 22 for delivering saturated steam into the drying cylinder 22 to make the surface of the drying cylinder 22 reach a predetermined temperature. The carbon fiber after washing and sizing is wound around the surface of the drying cylinder 22 for drying. During the drying process, heat exchange occurs between the surface of the drying cylinder 22 and the carbon fiber tow, and a large amount of condensed water will be formed when the saturated steam hits the inner wall of the drying cylinder 22. The opposite ends of the first drain pipe 26 are respectively connected to the drying cylinder 22 and the recovery pipe 40 for timely discharging the condensed water accumulated in the drying cylinder 22. The first intake pipe 24 and the first drain pipe 26 are respectively connected to one end of the drying cylinder 22. The drying cylinder 22 has a cavity 221, and a siphon tube 262 is further provided in the cavity 221. One end of the siphon tube 262 extends out of the cavity 221 and is connected to the first drain pipe 26 for discharging the condensed water out of the cavity 221 under the pressure of the saturated steam continuously entering the cavity 221.

[0031] Specifically, the connection manners of the first intake pipe 24 and the first drain pipe 26 with the drying cylinder 22 are flange connections. A rotating connector 28 is provided at one end of the drying cylinder 22. There are two channels (not labeled) in the rotating connector 28. The first intake pipe 24 and the first drain pipe 26 are respectively connected to the cavity 221 through one of the channels. The rotating connector 28 includes a flange plate 282 and a rotating bearing 284. One ends of the first intake pipe 24 and the first drain pipe 26 are connected to one end of the drying cylinder 22 through the flange plate 282, and the rotating bearing 284 is arranged between the flange plate 282 and the drying cylinder 22. The rotating bearing 284 is rotatably connected to the drying cylinder 22 so that the drying cylinder 22 can rotate to wind and dry the carbon fiber.

[0032] It can be understood that in practical applications, the drying assembly 20 may include a plurality of drying cylinders 22 arranged in a row, and the continuously conveyed carbon fiber is sequentially wound around the plurality of drying cylinders 22 for contact drying. An air suction hood (not shown in the figure) may be further provided above the plurality of drying cylinders 22. The air suction hood is connected to the waste gas treatment device, and can timely recover the waste gas generated during the drying process, avoiding the problem that the waste gas generated by drying accumulates to form tar and affects the tow to generate hairiness.

[0033] Please continue to refer to Figure 1 , the temperature-raising assembly 30 includes a radiator 32, a second intake pipe 34, and a second drain pipe 36. One section of the second intake pipe 34 is connected to the steam pipe 12, and the other end is connected to the radiator 32 for delivering saturated steam to the radiator 32; one end of the second drain pipe 36 is connected to the radiator 32, and the other end is connected to the recovery pipe 40 for discharging the condensed water accumulated in the radiator 32. In the embodiment of the present application, the radiator 32 may be a radiator.

[0034] In actual production, the carbon fiber production workshop may include multiple production lines at the same time. Each production line includes at least one drying component 20 and at least one heating component 30. In the embodiments of the present application, the carbon fiber production workshop may include four production lines, namely production line 1#, production line 2#, production line 3# and production line 4#. Each production line is connected to a steam pipe 12 and a recovery pipe 40. Among them, each production line, that is, each first drain pipe 26 and second drain pipe 36, can be jointly connected to a branch pipe 42. Multiple branch pipes 42 are all connected to the recovery pipe 40 to simultaneously complete the recovery and reuse of the condensed water of multiple production lines.

[0035] Among them, the connection mode between the first drain pipe 26 and the second drain pipe 36 and the branch pipe 42 can be welding. The connection mode between the branch pipe 42 and the recovery pipe 40 can be welding.

[0036] A high-temperature resistant water pump 54 is also provided in the reservoir 50. One end of the water pump 54 is flange-connected to the recovery pipe 40, and the other end is flange-connected to the conveying pipe 52 to convey the condensed water in the reservoir 50 to the condensed water reuse component 60. It can be understood that the recovered condensed water can be conveyed to any department in need. In the embodiments of the present application, the condensed water reuse component 60 is an exhaust gas treatment device outside the carbon fiber production workshop. The condensed water can pass through the wall W via the conveying pipe 52 and be conveyed to the exhaust gas treatment absorption tower. The high-temperature condensed water can replace a part of the sprayed hydrogen peroxide to treat the exhaust gas, which can reduce the water consumption in exhaust gas treatment, reduce the production cost of carbon fiber, and is beneficial to environmental protection.

[0037] It can be understood that in the embodiments of the present application, the reservoir 50 is arranged underground, and a water tank (not shown in the figure) is also provided in the reservoir 50. The water pump 54 is arranged in the water tank. In a specific embodiment, the material of the water tank can be 304 stainless steel, and the size can be 0.7m * 0.9m * 2m.

[0038] Among them, since the discharged condensed water usually has a relatively high temperature, the materials of various pipes in the condensed water recovery and reuse device can be high-temperature resistant stainless steel or carbon steel. Specifically, the material of the recovery pipe 40 can be stainless steel, and the diameter can be 100mm. The material of the conveying pipe 52 can be carbon steel, and the diameter can be 40mm. The water pump 54 is a mechanical seal-free water pump that can operate normally in a high-temperature environment.

[0039] The condensate recovery and reuse device provided by the embodiment of the present application efficiently recovers and reuses the condensate accumulated in the drying component 20 and the heating component 30 during the carbon fiber production process by setting up the recovery pipeline 40, solving the problems such as the decrease in steam temperature caused by the accumulation of condensate, affecting the stability of carbon fiber production and the decline in quality. Moreover, by setting up the reservoir 50 and the conveying pipeline 52, the recovered high-temperature condensate can be timely transported to the condensate reuse component 60 in need, avoiding the direct discharge of condensate, which is beneficial to reducing production costs and environmental protection.

[0040] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A condensate recovery and reuse device, characterized in that It includes a steam generator, at least one drying component, at least one heating component, a water storage tank and a condensate water reuse component. The steam generator is used to generate saturated steam and supply saturated steam to the drying component and the heating component respectively through steam pipelines. The drying component is used to dry the carbon fiber after being washed and sized. The heating component is used to maintain the temperature of the carbon fiber winding section. The drying component and the heating component are respectively connected to the water storage tank through recovery pipelines to recover the generated condensate water. The water storage tank transports the condensate water to the condensate water reuse component through a conveying pipeline for reuse.

2. The condensate water recovery and reuse device according to claim 1, characterized in that, The drying component includes a drying cylinder, a first intake pipeline and a first drainage pipeline. The opposite ends of the first intake pipeline are respectively connected to the steam pipeline and the drying cylinder for transporting saturated steam into the drying cylinder. The opposite ends of the first drainage pipeline are respectively connected to the drying cylinder and the recovery pipeline for discharging the condensate water accumulated in the drying cylinder.

3. The condensate water recovery and reuse device according to claim 2, characterized in that, The drying component further includes a siphon. The drying cylinder has a cavity. The siphon is arranged in the cavity, and one end of the siphon extends out of the cavity and is connected to the first drainage pipeline for discharging the condensate water from the cavity under the pressure of the saturated steam discharged into the cavity.

4. The condensate water recovery and reuse device according to claim 1, characterized in that, The heating component includes a radiator, a second intake pipeline and a second drainage pipeline. The opposite ends of the second intake pipeline are respectively connected to the steam pipeline and the radiator for transporting saturated steam to the radiator. The opposite ends of the second drainage pipeline are respectively connected to the radiator and the recovery pipeline for discharging the condensate water accumulated in the radiator.

5. The condensate recovery and reuse device according to claim 1, characterized in that, The condensate water recovery and reuse device further includes a plurality of branch pipelines. The number of the drying components and the heating components is multiple. Each drying component and heating component are commonly connected to one of the branch pipelines, and the plurality of branch pipelines are respectively connected to the recovery pipeline.

6. The condensate water recovery and reuse device according to any one of claims 1 to 5, characterized in that A water pump is further arranged in the water storage tank. The water pump is connected to the recovery pipeline and the conveying pipeline.

7. The condensate water recovery and reuse device according to claim 6, characterized in that, The connection modes of the water pump with the recovery pipeline and the conveying pipeline are both flange connections.

8. The condensate water recovery and reuse device according to claim 6, characterized in that, The water storage tank is buried underground. A water tank is further arranged in the water storage tank, and the water pump is arranged in the water tank.

9. The condensate water recovery and reuse device according to claim 1, wherein The materials of the recovery pipeline and the conveying pipeline are independently stainless steel or carbon steel.

10. The condensate water recovery and reuse device according to claim 1, characterized in that, The condensate water reuse component includes an exhaust gas treatment absorption tower.

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