Integrated equipment for recovering and drying low-boiling-point organic solvent on fabric surface

Abstract

The utility model provides fabric surface low-boiling-point organic solvent recycling and drying integrated equipment. The fabric surface low-boiling-point organic solvent recycling and drying integrated equipment comprises an unwinding machine, a padder system, a drying system, a winding machine, a shell covering the drying system, a front filtering separator, a condenser, a vacuum liquid storage tank, a water ring vacuum pump, a water tank and a low-temperature water freezing machine. The shell comprises a main body part for accommodating the drying cylinder, a recovery part arranged above the main body part and a steam inlet for communicating the main body part with the recovery part; the whole shell is in a sealed state, a steam outlet is formed in the top of the recovery part, the input end of the front filter separator is communicated with the steam outlet, and the output end of the front filter separator is connected with the input end of the condenser. When the fabric with the organic solvent is dried by the drying cylinder, the generated organic solvent steam is pumped away by the water ring vacuum pump, is treated by the filtering system, the vacuum system and the condensing system, is condensed and recycled, and is stored in the vacuum liquid storage tank, so that the simultaneous drying of the fabric and the recycling of the organic solvent are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic solvent waste liquid recovery equipment field especially relates to a fabric surface low boiling point organic solvent recovery and drying integrated equipment. BACKGROUND

[0002] In modern textile production, organic solvents are often used to enhance the performance of textiles. Existing technologies for recovering organic solvents include filtration, distillation, extraction, and other separation techniques, as well as membrane separation and adsorption for efficient recovery. However, most of these technologies are designed to handle organic solvent waste, while modified textiles with organic solvents often have a large amount of organic solvents remaining on the surface. Current methods for recovering low-boiling-point organic solvents from the surface of textiles mostly involve washing in water and then recovering and disposing of the waste liquid, or directly discarding the washed textiles, followed by drying. This not only wastes time and energy, but also results in resource waste and increased costs.

[0003] Patent CN118871636A discloses a non-woven fabric, its manufacturing method, an organic solvent recovery method using the non-woven fabric, and an organic solvent recovery device. The principle of the organic solvent recovery device is that organic solvents in odor gas are adsorbed in the adsorption process of the non-woven fabric, desorbed gas is used to desorb organic solvents from the non-woven fabric in the desorption process, and the desorbed organic solvents are recovered in the recovery process. This method is used for recovering organic solvents from gas.

[0004] Patent CN118727311A discloses a fabric reaction equipment and a reaction method, which includes a reaction kettle, a collection tank, and a pipeline device. The reaction kettle is used to hold organic solvents and provide a reaction space for the fabric. The collection tank is used to collect and store organic solvents. Although this method recovers organic solvents, it does not consider the recovery of organic solvents carried by the fabric itself.

[0005] Therefore, it is necessary to design a fabric surface low-boiling-point organic solvent recovery and drying integrated equipment to solve the above problems. Utility model content

[0006] The utility model discloses a kind of fabric surface low-boiling-point organic solvent recovery and drying integrated equipment, which is equipped with gas recovery system on drying machine, realizes the recovery of fabric surface low-boiling-point organic solvent on the drying of textile.

[0007] To achieve the above-mentioned utility model purposes, the utility model provides a kind of fabric surface low-boiling point organic solvent recovery and drying integrated equipment, including the uncoiler, calender system, drying system, winding machine that are sequentially arranged along the moving direction of fabric;The equipment further includes the shell that is covered in the outer drying system;The shell includes the main part that contains drying cylinder, the recovery part being arranged in the upper portion of the main part and the steam inlet being communicated with the main part and the recovery part;The shell is in sealed state as a whole, and the top of the recovery part is provided with steam outlet;The fabric surface low-boiling point organic solvent recovery and drying integrated equipment further includes pre-filter separator, condenser, vacuum liquid storage tank, water ring vacuum pump, water tank and low-temperature chilled water machine;The input end of the pre-filter separator is communicated with the steam outlet, and the output end of the pre-filter separator is connected with the input end of the condenser.

[0008] As a further improvement of the utility model, the fabric surface low-boiling point organic solvent recovery and drying integrated equipment further includes a pervaporation membrane assembly arranged between the output end of the pre-filter separator and the input end of the condenser.

[0009] As a further improvement of the utility model, the fabric surface low-boiling point organic solvent recovery and drying integrated equipment further includes a glass house covered around the uncoiler, and the glass house is in sealed state.

[0010] As a further improvement of the utility model, the input end of the condenser has a first inlet and a second inlet, and the output end of the condenser has a first water outlet and a second water outlet; the first inlet is communicated with the output end of the pre-filter separator; the second water outlet is communicated with the cooling water inlet of the low-temperature chilled water machine, and the first water outlet is communicated with the inlet of the vacuum liquid storage tank.

[0011] As a further improvement of the utility model, the upper portion of the vacuum liquid storage tank is provided with an exhaust port, and the bottom of the vacuum liquid storage tank is provided with a first liquid discharge port and a second liquid discharge port; the exhaust port is communicated with the water ring vacuum pump.

[0012] As a further improvement of the utility model, the second inlet is communicated with the cooling water discharge pipeline of the low-temperature chilled water machine.

[0013] As a further improvement of the utility model, the water inlet and the water outlet of the water tank are both communicated with the water ring vacuum pump.

[0014] As a further improvement of the utility model, the vacuum liquid storage tank has a partition layer, and the partition layer is communicated with the low-temperature chilled water machine.

[0015] The utility model has the advantages that:

[0016] The utility model provides a fabric surface low boiling point organic solvent recovery and drying integrated equipment, including the unwinding machine, the calender system, the drying system, the winding machine that set gradually along the movement direction of fabric, the casing of cover sets in the drying system outside, the prefilter separator, the condenser, the vacuum liquid storage tank, the water ring vacuum pump, the water tank and low temperature chilled water machine. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model embodiment 1.

[0018] Figure 2 It is the structure schematic diagram of the drying system section. Figure 1

[0019] It is the structure schematic diagram of the recovery section. Figure 3 Figure 1 It is the structure schematic diagram of the utility model embodiment 2.

[0020] Figure 4 It is the structure schematic diagram of the utility model embodiment 3.

[0021] DETAILED DESCRIPTION Figure 5 In order to make the purpose, technical scheme and advantage of the utility model more clear, the utility model is described in detail below with the combination of the drawings and specific embodiment.

[0022] Here, it also needs to be explained that in order to avoid the utility model from being obscured by unnecessary details, only the structure and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0023] In addition, it also needs to be explained that the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent to such process, method, article or equipment.

[0024] In addition, it also needs to be explained that the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent to such process, method, article or equipment.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 3 ​As shown, the utility model provides a kind of fabric surface low boiling point organic solvent recovery and drying integrated equipment, including the unwinding machine 10 of setting in turn along the moving direction of fabric, calender system 20, drying system 30, winding machine 40.The equipment also includes the shell of covering in drying system outside, shell includes the main part 51 of containing drying cylinder, recovery part 52 being arranged in the upper portion of main part 51 and the steam inlet 53 being communicated main part 51 with recovery part 52.Shell is in sealed state as a whole, and the top of recovery part 52 is provided with steam outlet 54.

[0027] Fabric surface low boiling point organic solvent recovery and drying integrated equipment also includes pre-filter separator 60, condenser 70, vacuum liquid storage tank 80, water ring vacuum pump 90, water tank 11 and low-temperature chilled water machine 12.The input end of pre-filter separator 60 is communicated with steam outlet 54, and the output end of pre-filter separator 60 is connected with the input end of condenser 70.

[0028] The input end of condenser 70 has first inlet 71, second inlet 72, and the output end of condenser 70 has first water outlet 73, second water outlet 74.The first inlet 71 is communicated with the output end of pre-filter separator 60;Second water outlet 74 is communicated with the cooling water inlet of low-temperature chilled water machine 12, and first water outlet 73 is communicated with the inlet 81 of vacuum liquid storage tank.Second inlet 72 is communicated with the cooling water discharge pipeline of low-temperature chilled water machine 12.That is, the cooling water provided by low-temperature chilled water machine 12 enters condenser 70 through second inlet 72, flows back to low-temperature chilled water machine 12 through second water outlet 74, to realize the circulation of cooling water.

[0029] The upper portion of vacuum liquid storage tank 80 is provided with exhaust port 82, and the bottom of vacuum liquid storage tank 80 is provided with first liquid discharge port 84 and second liquid discharge port 83;Exhaust port 82 is communicated with water ring vacuum pump 90.

[0030] It should be noted that the output end of pre-filter separator 60 has two branches for outputting water vapor and organic solvent respectively, and both branches enter condenser 70 through first inlet 71, and then are output through first water outlet 73 and then enter vacuum liquid storage tank 80 through inlet 81.Among them, the branch (first branch) for conveying water vapor discharges water through the first liquid discharge port 84 arranged at the bottom of vacuum liquid storage tank 80;The branch (second branch) for conveying organic solvent inputs organic solvent into vacuum liquid storage tank 80, and the organic solvent is output for recycling through the second liquid discharge port 83 arranged at the bottom of vacuum liquid storage tank 80.

[0031] That is, the organic solvent gas containing moisture is pretreated by the pre-filtering separator 60, in which the separation of moisture and organic solvent is carried out in gaseous form. The separated water vapor and organic solvent vapor enter the condenser 70, respectively, and are condensed into liquid under the action of the condensed water produced by the low-temperature chilled water machine 12, and the organic solvent recovery liquid is sent to the vacuum liquid storage tank 80 for storage for standby, realizing the recycling of the organic solvent. The separated condensed water is discharged through the first liquid discharge port 84.

[0032] The water inlet and the water outlet of the water tank 11 are communicated with the water ring vacuum pump 90.

[0033] In particular, the vacuum liquid storage tank 80 has a partition layer, in which the cold water input by the low-temperature chilled water machine 12 is stored. The shell of the vacuum liquid storage tank 80 is provided with a water inlet and a water outlet communicated with the low-temperature chilled water machine 12. The cold water input by the low-temperature chilled water machine 12 flows into and out of the partition layer, so as to cool the organic solvent with higher temperature recycled in the vacuum liquid storage tank 80.

[0034] In this embodiment, the surface of the non-woven fabric contains ethanol. In the specific implementation process, after the non-woven fabric passes through the calender, it is dried by four drying cylinders, and at the same time, the ethanol containing a small amount of water on the surface is evaporated into ethanol vapor, which is separated in the pre-filtering separator 60. The separated ethanol vapor is condensed into ethanol solution under the action of the condenser 70. The equipment realizes the simultaneous drying of the non-woven fabric and the recycling of ethanol.

[0035] Specifically, after the organic solvent solution containing a small amount of water is evaporated by the drying cylinder, the equipment is in a negative pressure state under the suction action of the water ring vacuum pump 90. At this time, the ethanol vapor is pretreated by the pre-filtering separator 60, in which the separation of moisture and organic solvent is carried out in gaseous form. The separated water vapor and organic solvent vapor enter the condenser 70, respectively, and are condensed into liquid. The condenser 70 has two branch pipes. The water vapor is condensed into liquid and discharged through the first branch pipe, the first water outlet 73 and the first liquid discharge port 84. The organic solvent vapor enters the vacuum liquid storage tank 80 for storage for standby after passing through the second branch pipe and the first water outlet 73, realizing the recycling of the organic solvent. The cold water input by the low-temperature chilled water machine 12 flows into and out of the partition layer, so as to cool the organic solvent with higher temperature recycled in the vacuum liquid storage tank 80.

[0036] Embodiment 2

[0037] Please refer to Figure 4 As shown in the figure, the main difference between embodiment 2 and embodiment 1 is that a pervaporation membrane assembly b is arranged between the output end of the pre-filtering separator 60 and the input end of the condenser 70, and the other structures are basically the same as those of embodiment 1, which will not be described here. The fabric surface low-boiling point organic solvent recycling and drying integrated equipment is suitable for organic solvents with higher boiling point, such as propanol.

[0038] In the embodiment, the non-woven fabric surface has propanol. In the implementation process, the non-woven fabric is dried by four drying cylinders after the calendering, and the propanol containing a small amount of water on the surface is evaporated into propanol vapor. Different from the embodiment 1, the boiling point of propanol is higher, and after passing through the pre-filtering separator 60, the propanol vapor needs to pass through the pervaporation membrane assembly b again. The separated propanol vapor is condensed into propanol solution under the action of the condenser. The equipment realizes the drying of the gauze and the recovery of propanol at the same time. Different from the embodiment 1, because the boiling point of propanol is higher than that of ethanol, the pressure of the calendering device needs to be adjusted to be larger, the temperature of the drying cylinder needs to be increased, and the unwinding and winding speed needs to be appropriately reduced.

[0039] Specifically, the organic solvent solution containing a small amount of water is evaporated by the drying cylinder, and then is pretreated by the pre-filtering separator 60. After being preheated and evaporated to a predetermined temperature, the gaseous organic solvent enters the pervaporation membrane assembly b. The gaseous organic solvent flows through the series-connected membrane, and the water molecules and the organic solvent molecules are separated by the different adsorption and diffusion speeds of the water molecules and the organic solvent molecules through the pervaporation membrane. The water and a small amount of organic solvent in the raw material are separated by the membrane assembly and permeate from the upstream side of the membrane to the permeation side of the membrane. Finally, the water content of the product is not more than 5.0%, and the separated organic solvent is cooled to below 35℃ by the condenser and is sent to the vacuum storage tank for storage.

[0040] Embodiment 3

[0041] Please refer to Figure 5 As shown in the figure, the main difference between the embodiment 3 and the embodiment 1 is that the unwinding machine 10 is arranged in the glass room a, and the glass room a is in a sealed state. The other structures are basically the same as those of the embodiment 1, and will not be described here. The gauze surface low-boiling point organic solvent recovery and drying integrated equipment is suitable for toxic organic solvents such as acetone.

[0042] The boiling point of acetone is relatively low, only 56.5℃, and it is volatile and toxic. By increasing the sealed glass room a around the unwinding machine 10, the steam leakage during the unwinding process is prevented, and the personal safety is protected. At the same time, during the drying process, the pressure of the vacuum pump needs to be increased, and the steam extraction rate needs to be accelerated.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An integrated device for recovering and drying low-boiling-point organic solvents from fabric surfaces, characterized in that: The device comprises a unwinding machine, a calender system, a drying system and a winding machine arranged in sequence along the moving direction of the fabric; the device further comprises a shell covering the drying system; the shell comprises a main body part containing drying cylinders, a recovery part arranged above the main body part and a steam inlet connecting the main body part and the recovery part; the shell is in a sealed state as a whole, the top of the recovery part is provided with a steam outlet; the fabric surface low-boiling point organic solvent recovery and drying integrated device further comprises a pre-filter separator, a condenser, a vacuum liquid storage tank, a water ring vacuum pump, a water tank and a low-temperature chilled water machine; the input end of the pre-filter separator is in communication with the steam outlet, and the output end of the pre-filter separator is connected with the input end of the condenser.

2. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The fabric surface low-boiling point organic solvent recovery and drying integrated device further comprises a pervaporation membrane assembly arranged between the output end of the pre-filter separator and the input end of the condenser.

3. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The fabric surface low-boiling point organic solvent recovery and drying integrated device further comprises a glass house covering the periphery of the unwinding machine, and the glass house is in a sealed state.

4. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The input end of the condenser has a first inlet and a second inlet, and the output end of the condenser has a first water outlet and a second water outlet. The first inlet is in communication with the output end of the pre-filter separator; the second water outlet is in communication with the cooling water inlet of the low-temperature chilled water machine, and the first water outlet is in communication with the inlet of the vacuum liquid storage tank.

5. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The upper part of the vacuum liquid storage tank is provided with an exhaust port, and the bottom of the vacuum liquid storage tank is provided with a first liquid discharge port and a second liquid discharge port; the exhaust port is in communication with the water ring vacuum pump.

6. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 4, characterized in that: The second inlet is in communication with the cooling water discharge pipeline of the low-temperature chilled water machine.

7. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The water inlet and the water outlet of the water tank are in communication with the water ring vacuum pump.

8. The fabric surface low-boiling organic solvent recovery and drying integrated apparatus according to claim 1, characterized in that: The vacuum liquid storage tank has a partition layer, and the partition layer is in communication with the low-temperature chilled water machine.

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