阅读说明：本技术 一种离子交换膜的连续制造设备 (Continuous manufacturing equipment for ion exchange membrane ) 是由 吴圳尧 吴友武 杨梦南 杨泽滔 林志冲 林仰 于 2020-08-10 设计创作，主要内容包括：本发明涉及一种离子交换膜的连续制造设备,包括溶液灌注部、膜放卷辊、膜边封接部、平板加热部、封边切断部、膜层回收辊和膜片裁切部；膜放卷辊的上膜层、下膜层和介于上膜层、下膜层之间的支撑层通过第一组胶辊平整牵引,经膜边封接部对上、下膜层在两侧边处连续密封为三层结构的双边封袋；灌注可反应性溶液的双边封袋经第二组胶辊的牵引进入平板加热部固化；内含固化后离子交换膜的双边封袋通过封边切断部切断封边,通过膜层回收辊对上、下膜层剥离,中间的离子交换膜通过膜片裁切部裁切为单片的离子交换膜。具有工艺及流程简单、生产效率高、制造成本低的优点。(The invention relates to continuous manufacturing equipment of an ion exchange membrane, which comprises a solution filling part, a membrane unreeling roller, a membrane edge sealing part, a flat plate heating part, an edge sealing and cutting part, a membrane layer recycling roller and a membrane cutting part, wherein the membrane edge sealing part is arranged on the flat plate heating part; an upper film layer and a lower film layer of the film unwinding roller and a supporting layer between the upper film layer and the lower film layer are smoothly drawn through a first group of rubber rollers, and the upper film layer and the lower film layer are continuously sealed at two side edges through a film edge sealing part to form a double-side sealing bag with a three-layer structure; the double-side sealing bag filled with the reactive solution enters a flat plate heating part for solidification through the traction of a second group of rubber rollers; the double-side sealing bag containing the solidified ion exchange membrane is cut off and sealed by a sealed edge cutting part, the upper membrane layer and the lower membrane layer are stripped by the membrane layer recovery roller, and the middle ion exchange membrane is cut into a single-piece ion exchange membrane by the membrane cutting part. Has the advantages of simple process and flow, high production efficiency and low manufacturing cost.)

1. A continuous manufacturing apparatus of an ion exchange membrane, characterized in that:

comprises a solution filling part, a film unreeling roller, a film edge sealing part (10), a flat plate heating part (11), an edge sealing and cutting part (12), a film layer recycling roller (13) and a film cutting part (14);

the solution filling part comprises a storage tank (1) and a conveying pipeline (2), an upper film layer (6) and a lower film layer (7) of the film unwinding roller and a supporting layer (8) between the upper film layer and the lower film layer are smoothly pulled through a first group of rubber rollers (9), and the upper film layer and the lower film layer are continuously sealed at two side edges into a double-side sealing bag with a three-layer structure through the film edge sealing part;

the conveying pipeline is inserted into the sealed double-side sealing bag, and the double-side sealing bag filled with the reactive solution enters the flat plate heating part for curing through the traction of a second group of rubber rollers (16);

the double-side sealing bag containing the solidified ion exchange membrane is cut off and sealed by a sealing and cutting part, the upper membrane layer and the lower membrane layer are stripped by the membrane layer recovery roller, and the middle ion exchange membrane is cut into a single-piece ion exchange membrane (17) by the membrane cutting part.

2. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: a waste recovery roller (15) is arranged at the tail end of the device, and the residual waste of the cut single-piece ion exchange membrane is recovered by the waste recovery roller.

3. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the storage tank is a constant-temperature storage tank with an inert gas protection atmosphere, and the conveying pipeline is provided with a peristaltic pump capable of adjusting the solution amount.

4. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the film unwinding roller comprises a supporting layer unwinding roller (3), an upper film layer unwinding roller (4) and a lower film layer unwinding roller (5), and the linear speeds of the supporting layer unwinding roller, the upper film layer unwinding roller and the lower film layer unwinding roller are the same, so that the upper film layer, the lower film layer and the supporting layer move synchronously.

5. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the film edge sealing part is used for continuously sealing the upper film layer and the lower film layer at two side edges by adopting hot air flow for heating and continuously sealing.

6. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the width of a crack between rubber rollers of the first group of rubber rollers is 5-10mm, hot air flows through the crack to melt the upper and lower film layers, the rubber tube for conveying the reactive solution extends into the position below the film edge sealing part, the solution supply amount is quantitatively regulated according to the thickness of the supporting layer and the traction speed of the double-edge sealing bag, and the solution supply height (h) is lower than the position below the film edge sealing part.

7. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the width of a gap between the upper rubber roller and the lower rubber roller of the second group of rubber rollers is 80-90% of the sum of the thicknesses of the upper film layer, the lower film layer and the supporting layer, after the double-sided envelope filled with the reactive solution passes through the gap between the upper rubber roller and the lower rubber roller of the second group of rubber rollers, all pores in the supporting layer are filled with the reactive solution, and the upper film layer and the lower film layer form an upper smooth holding structure and a lower smooth holding structure for the impregnated supporting layer.

8. The continuous manufacturing apparatus of an ion exchange membrane according to claim 1, characterized in that: the flat heating part has adjustable heating temperature control, and the temperature control range is room temperature to 500 ℃.

9. The continuous manufacturing apparatus of an ion exchange membrane according to claim 8, characterized in that: and a group of heating elements and temperature control elements are arranged along the length direction of the flat heating part every 10 cm.

Technical Field

The invention relates to a continuous manufacturing device of an ion exchange membrane.

Background

The ion exchange membrane is a membrane-shaped material with fixed ion charges and corresponding mobile counter-ion charges, and can be divided into an anion exchange membrane, a cation exchange membrane, a bipolar membrane and the like according to different charge types; because of the unique charge structure, under the drive of direct current, the anions and the cations have different migration numbers in the membrane, thereby realizing the anion and the cation permselectivity with industrial value.

As an important core component, an ion exchange membrane plays an irreplaceable role, and its design and manufacturing technology has been widely focused, and the manufacturing cost and performance of the ion exchange membrane are the most important two aspects, which are also main obstacles restricting the application of the ion exchange membrane. In the aspect of cost, the manufacturing process of the ion exchange membrane is simplified, the use of a solvent in the manufacturing process of the membrane is reduced, the yield of the membrane is improved, and the like; japanese patent JP2012058157 prepares styrene and divinylbenzene as polymerization precursors capable of introducing ion exchange groups, soaks a supporting layer, then polymerizes to form a base membrane, then carries out sulfonation treatment and alkaline regulation to prepare a cation exchange membrane, and the membrane preparation process is solvent-free, but the preparation process is tedious and complicated, and particularly the process of introducing the sulfonation groups needs one to two days. Continuous production of ion exchange membranes is difficult, and the price of membranes is high, so that a rapid ion exchange membrane production device is urgently needed to meet the requirement of efficient membrane production.

Disclosure of Invention

The invention aims to solve the problems and provide continuous manufacturing equipment for the ion exchange membrane, which has the advantages of simple process and flow, high production efficiency and low manufacturing cost.

The invention aims to realize that the continuous manufacturing equipment of the ion exchange membrane comprises a solution pouring part, a membrane unreeling roller, a membrane edge sealing part, a flat plate heating part, an edge sealing and cutting part, a membrane layer recycling roller and a membrane cutting part; the solution filling part comprises a storage tank and a conveying pipeline, an upper film layer and a lower film layer of the film unwinding roller and a supporting layer between the upper film layer and the lower film layer are flatly pulled through a first group of rubber rollers, and the upper film layer and the lower film layer are continuously sealed at two side edges through the film edge sealing part to form a double-side sealing bag with a three-layer structure; the conveying pipeline is inserted into the sealed double-side sealing bag, and the double-side sealing bag filled with the reactive solution enters the flat plate heating part for curing through the traction of the second group of rubber rollers; the double-side sealing bag containing the solidified ion exchange membrane is cut off and sealed by a sealed edge cutting part, the upper membrane layer and the lower membrane layer are stripped by the membrane layer recovery roller, and the middle ion exchange membrane is cut into a single-piece ion exchange membrane by the membrane cutting part.

According to the invention, the waste recovery roller is arranged at the tail end of the device, and the residual waste of the cut single-sheet ion exchange membrane is recovered by the waste recovery roller.

According to the invention, the storage tank is a constant-temperature storage tank with an inert gas protection atmosphere, the storage tank is used for containing a prepared reactive solution in advance and keeping the solution in the tank body in an adjustable temperature range of 4-10 ℃, and the delivery pipeline is provided with a peristaltic pump and can meter and adjust the supply of the solution amount.

The film unwinding roller comprises a supporting layer unwinding roller, an upper film layer unwinding roller and a lower film layer unwinding roller, wherein the linear speeds of the supporting layer unwinding roller, the upper film layer unwinding roller and the lower film layer unwinding roller are the same, so that the upper film layer, the lower film layer and the supporting layer synchronously move. Each film unwinding roller is driven by a servo motor, and the linear speed and the traction tension can be adjusted.

According to the invention, the film edge sealing part continuously seals the upper film layer and the lower film layer at the two side edges by adopting hot air flow heating for continuous sealing.

According to the invention, the width of a crack between rubber rollers of the first group of rubber rollers is 5-10mm, hot air flows through the crack to melt the upper and lower film layers, the rubber tube for conveying the reactive solution extends into the position below the film edge sealing part, the solution supply amount is quantitatively regulated according to the thickness of the supporting layer and the traction speed of the double-side sealing bag, and the solution is kept lower than the position below the film edge sealing part.

According to the invention, the width of a gap between an upper rubber roller and a lower rubber roller of a second group of rubber rollers is 80-90% of the sum of the thicknesses of an upper film layer, a lower film layer and a support layer, after a double-sided envelope filled with a reactive solution passes through the gap between the upper rubber roller and the lower rubber roller of the second group of rubber rollers, all pores in the support layer are filled with the reactive solution, and the upper film layer and the lower film layer form an upper smooth holding structure and a lower smooth holding structure for the impregnated support layer.

According to the invention, the flat heating part has adjustable heating temperature control, and the temperature adjusting range is from room temperature to 500 ℃.

According to the invention, a group of heating elements and temperature control elements are arranged along the length direction of the flat heating part every 10 cm.

According to the invention, the edge sealing of the double-side sealing bag containing the solidified ion exchange membrane is cut by the edge sealing and cutting part, the upper membrane layer and the lower membrane layer are peeled by the membrane layer recovery roller, the middle ion exchange membrane is cut into a single-piece ion exchange membrane by the membrane cutting part, and the rest waste materials are recovered by the waste material recovery roller; the upper and lower membrane layers which are stripped and recovered can be reused for manufacturing the ion exchange membrane. The equipment used in the manufacturing process is simple, the manufacturing cost is low, the continuous manufacturing of the ion exchange membrane can be realized, the manufacturing cost is relatively low, and the market competitiveness is high.

The following examples are provided to further illustrate the present invention in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a storage tank; 2. a delivery conduit; 3. a support layer unwinding roller; 4. unwinding the upper film layer; 5. unwinding the lower film layer; 6. coating a film layer; 7. a lower film layer; 8. a support layer; 9. a first set of rubber rollers; 10. a film edge seal; 11. a flat plate heating section; 12. a seal edge cutting part; 13. a film layer recovery roller; 14. a membrane cutting part; 15. a waste recovery roll; 16. a second set of rubber rollers; 17. a monolithic ion exchange membrane; h. the solution supply height.

Detailed Description

Referring to fig. 1, the present embodiment is a continuous manufacturing apparatus for an ion exchange membrane, including a solution filling portion, a membrane unwinding roller, a membrane edge sealing portion 10, a flat plate heating portion 11, an edge sealing and cutting portion 12, a membrane layer recycling roller 13, a membrane cutting portion 14, and a waste recycling roller 15; the solution filling part comprises a storage tank 1 and a conveying pipeline 2, the film unwinding roller comprises a supporting layer unwinding roller 3, an upper film layer unwinding roller 4 and a lower film layer unwinding roller 5, an upper film layer 6 and a lower film layer 7 of the film unwinding roller and a supporting layer 8 between the upper film layer and the lower film layer are smoothly drawn through a first group of rubber rollers 9, and the upper film layer and the lower film layer are continuously sealed at two side edges through film edge sealing parts to form a double-side sealing bag with a three-layer structure; the conveying pipeline is inserted into the sealed double-side sealing bag, the solution supply amount is quantitatively regulated according to the thickness of the supporting layer and the traction speed of the double-side sealing bag, and the solution supply height h is lower than the position below the film edge sealing part; the double-side sealing bag filled with the reactive solution enters a flat plate heating part for solidification through the traction of a second group of rubber rollers 16; the double-side sealing bag containing the solidified ion exchange membrane is cut off and sealed through a sealed edge cutting part, an upper membrane layer and a lower membrane layer are stripped through a membrane layer recovery roller, the middle ion exchange membrane is cut into a single-piece ion exchange membrane 17 through a membrane cutting part, and the rest waste materials are recovered through a waste material recovery roller.

Referring to the continuous manufacturing apparatus of the embodiment of fig. 1, the ion exchange membrane is continuously produced as follows:

two rolls of 1000m PET film with width of 620mm are adopted, one roll of 450m non-woven fabric with width of 550mm is adopted, and the non-woven fabric is 20g/m²The porosity is 80-85%; preparation of a reactive solution containing ion exchange groups: azobisisobutyronitrile: methacryloyloxyethyl trimethyl ammonium chloride: ethylene glycol dimethacrylate: preparing 50kg of solution by the mass ratio of the dipropylene glycol to the dipropylene glycol of 1:65:20:15, defoaming for 1 hour by adopting negative pressure, filling the solution into a storage tank, adjusting the temperature to be 20 ℃, and introducing nitrogen into the tank body; after the upper PET film, the lower PET film and the non-woven fabric supporting layer are assembled in place, the upper PET film, the lower PET film and the non-woven fabric supporting layer pass through a first group of rubber rollers in a mode shown in figure 1, the width of a crack between the rubber rollers is adjusted to be 8mm, tension is adjusted to ensure that the PET film and the non-woven fabric are both pulled flatly, the width of the non-woven fabric is narrowed to be not more than 3% when the tension is adjusted, linear speeds of the PET film and the non-woven fabric are consistent when the non-woven fabric is pulled, and the PET film and the non-woven fabric are overlapped and are quickly sealed through film edge; a conveying pipeline is inserted into the sealed double-side sealing bag, a reactive solution is filled, the solution supply height is 10cm lower than that of the lower part of the sealing part of the film edge, then the double-side sealing bag passes through a second group of rubber rollers, the width of a gap between the upper rubber roller and the lower rubber roller is 0.47-0.5mm, after the double-side sealing bag passes through the gap between the upper rubber roller and the lower rubber roller of the second group of rubber rollers, all pores in the non-woven fabric are filled with the reactive solution, the upper PET film and the lower PET film are flatly held on the impregnated non-woven fabric from top to bottom and enter a flat plate heating platform, the temperature of the flat plate heating platform is sequentially set to be 50m in a temperature area of 60 ℃, 50m in a temperature area of 50m → 90 ℃ in a temperature area of 80m in a temperature area of; continuous production of an ion exchange membrane was carried out. The ion exchange membrane 433m is manufactured in the whole process, 535 sheets of 400 x 800mm membranes are automatically punched, and detection shows that only two membranes have physical perforations to permeate and are caused by impurities on the surface of non-woven fabric. Therefore, the continuous manufacturing equipment of the ion exchange membrane can realize stable and good manufacturing of the ion exchange membrane, has simple manufacturing process, high efficiency and simple equipment, has good performance of products, and greatly improves the market competitiveness.