A basalt grid cloth structured packing for a packing tower and its manufacturing process

Abstract

The invention discloses a basalt grid mesh cloth structured packing for a packing tower and a process method. The method comprises the following steps: basalt continuous fiber monofilaments are combined into thick filaments; the thick filaments are processed into a basalt grid mesh cloth substrate through a warp knitting machine, the substrate adopts a warp knitting directional structure, fully utilizes the yarn strength in the fabric, improves its mechanical properties, and makes it have good tensile strength, tear strength and creep resistance; the substrate is impregnated with a mixture of m-phenylenediamine and diaminodiphenylmethane, fully drained after the impregnation, and then solidified and shaped to increase its rigidity for subsequent splicing and molding; the solidified and shaped substrate is assembled into a structured packing block; compared with existing metal packings, the structured packing has better corrosion resistance and lower cost; compared with existing anti-corrosion structured packings such as ceramics, the structured packing has high separation efficiency, can make the packing tower equipment occupy less space, and is more energy-efficient; compared with existing plastic structured packings such as polyethylene, the structured packing has better temperature resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical separation, and in particular relates to a basalt grid cloth structured filler for a packing tower and a manufacturing process thereof. Background Art

[0002] Structured packing is used in packed towers. There are four characteristics in the development of packed tower separation technology: first, the scope of application has expanded from general chemical industry to oil refining, petrochemical industry, fine chemical industry, medicine and environmental protection industries; second, the operating unit has expanded from distillation to absorption, extraction, washing, heat transfer and biochemical treatment; third, the equipment tends to be large-scale and refined; fourth, the design and production process can be designed and controlled by computer.

[0003] Most of the structured packings used in industry are corrugated packings, which can be divided into two categories according to their structure: mesh corrugated packings and plate corrugated packings, and their materials can be divided into metals, plastics and ceramics. The above materials have one or more disadvantages such as poor corrosion resistance, low separation efficiency, poor temperature resistance, high production cost, short service life, etc., and are prone to waste resources. At the same time, they will increase energy consumption and product processing costs. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a basalt grid mesh regular packing and a manufacturing process for a material tower, which has many properties such as good corrosion resistance, high separation efficiency, good temperature resistance, low manufacturing cost, and long service life, and will not cause waste of resources, save energy consumption and reduce product processing costs.

[0005] A basalt grid mesh cloth structured filler, the filler is formed by splicing a grid mesh cloth base material; the grid mesh cloth base material is woven from basalt continuous fiber coarse filaments; the basalt continuous fiber coarse filaments are formed by merging basalt continuous fiber monofilaments.

[0006] Preferably, one side of the grid cloth substrate is processed with notches at intervals, and the grid cloth substrates are inserted together through the notches in a staggered manner horizontally and vertically to form a filler block.

[0007] Preferably, the outer periphery of the filler block is fixed by a fixing hoop.

[0008] Preferably, the diameter of the coarse basalt continuous fiber is 0.10-0.50 mm.

[0009] Preferably, the height of the filler block is 50 mm to 300 mm, and the diameter of each filler plate is 100 mm to 2000 mm.

[0010] Preferably, the fixing hoop is a basalt continuous fiber cloth with a wire diameter of 9 μm to 24 μm.

[0011] A manufacturing process of basalt grid mesh structured packing, comprising:

[0012] Step 1, merging basalt continuous fiber monofilaments into basalt continuous fiber thick filaments;

[0013] Step 2: Processing the basalt continuous fiber filaments obtained in step 1 into a basalt grid mesh base material through a warp knitting machine;

[0014] Step 3, cutting the grid mesh substrate obtained in step 2 into a desired structure, and processing notches at equal intervals on one side of the substrate;

[0015] Step 4: Curing and shaping the substrate obtained in step 3 by chemical methods;

[0016] Step 5: The grid mesh base materials are inserted together horizontally and vertically through the notches to form a filler block.

[0017] Preferably, in step 4, the chemical method is: m-phenylenediamine and diaminodiphenylmethane are mixed in a mass ratio of 45:55 to 65:35, 15g to 30g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 35°C to 50°C for 5 to 7 hours.

[0018] Preferably, in step 4, the chemical method is: m-phenylenediamine, diaminodiphenylmethane, triphenyl phosphate and phenol are mixed in a mass ratio of 38:32:12:18 to 5:35:8:12, 15g to 32g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, and after the impregnation is completed, it is fully drained, and then cured at 19°C to 40°C for 9 to 11 hours.

[0019] Preferably, in step 4, the chemical method is: m-phenylenediamine, diaminodiphenylmethane, and toluenediamine are mixed in a mass ratio of 48:32:20 to 55:28:17, 16 g to 35 g of the aforementioned mixture is used for every 100 g of standard resin, the cut basalt grid mesh substrate is impregnated, and after the impregnation is completed, it is fully drained, and then cured at 125°C to 150°C for 4 to 6 hours.

[0020] The present invention has the following beneficial effects:

[0021] The invention discloses a basalt grid mesh cloth structured packing for a packing tower and a process method. The packing is composed of basalt continuous fiber monofilaments, which are combined into basalt continuous fiber coarse filaments; the basalt continuous fiber coarse filaments are then processed into a basalt grid mesh cloth substrate through a warp knitting machine. The substrate adopts a warp knitting directional structure, fully utilizes the yarn strength in the fabric, improves its mechanical properties, and has good tensile strength, tear strength and creep resistance. Since the basalt grid mesh cloth is relatively flexible and difficult to shape, the grid mesh cloth substrate needs to be cut into a required structure by a shearing machine, and then impregnated with a mixture of m-phenylenediamine and diaminodiphenylmethane, fully drained after the impregnation, and then cured and shaped to increase its rigidity for subsequent splicing and molding; the cured and shaped substrate is assembled into a structured packing block. The advantages of the present invention are: compared with existing metal structured packings, it has better corrosion resistance and lower cost; compared with existing ceramic, glass, silicon carbide anti-corrosion structured packings, it has high separation efficiency, can make the packing tower equipment occupy less space, and is more energy-efficient; compared with existing polyethylene, polyvinyl chloride, polypropylene, nylon and other plastic structured packings, it has better temperature resistance. The above advantages can make the application scope of the present invention wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the warp-knitted basalt grid mesh used in the present invention.

[0023] Figure 2 This is a schematic diagram of cutting the warp-knitted basalt grille mesh used in the present invention.

[0024] Figure 3 This is a schematic diagram of the splicing of the warp-knitted basalt grid mesh used in the present invention.

[0025] Figure 4 It is a schematic diagram of the basalt grid mesh structured packing of the utility model.

[0026] Figure 5 This is a real picture of the weaving of the basalt grille mesh of the utility model.

[0027] Among them, 41 is the filling block insertion angle, and 42 is the filling fixing hoop. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0029] The purpose of the present invention is to provide a basalt grid mesh structured packing and a manufacturing process for a packing tower, which overcomes some shortcomings of existing structured packings. The structured packing can be used in places with strong corrosion resistance and high temperature. Compared with ceramic packing, under the same specific surface area, the new basalt grid mesh structured packing has a higher porosity and more theoretical plates per unit height, so its separation efficiency is higher than that of ceramic packing; compared with metal wire mesh packing, it has better corrosion resistance and lower cost; compared with commonly used plastic packing, it can be more heat-resistant. In summary, if the new basalt grid mesh is used to make structured packing, it can be used as a good supplement to existing structured packing in the field of separation.

[0030] Among them, basalt continuous fiber monofilament is a continuous fiber made by high-speed drawing of basalt stone after melting at 1450℃~1500℃ through a platinum-rhodium alloy drawing plate. The color of pure natural basalt fiber is generally brown, with metallic luster, and the diameter of the monofilament is generally 9μm~17μm. The present invention uses basalt continuous fiber coarse wire to weave into basalt grid mesh base material, which is then spliced ​​and made into a whole piece of filler after solidification. The specific steps are:

[0031] Step 1, merging basalt continuous fiber monofilaments into basalt continuous fiber thick filaments;

[0032] Step 2: Process the basalt continuous fiber filaments obtained in step 1 into a basalt grid mesh substrate through a warp knitting machine. Figure 1 As shown, the substrate adopts a warp knitted directional structure, and the warp and weft yarns in the fabric are not bent relative to each other. Figure 5 As shown, the intersections are bound together with high-strength fiber filaments to form strong bonding points, giving full play to their mechanical properties.

[0033] Step 3: Cut the grid mesh substrate obtained in step 2 into the required structure by a shearing machine; Figure 2 As shown, the present invention has notches at equal intervals on one side of the substrate to facilitate subsequent splicing;

[0034] Step 4: impregnate the material obtained in step 3 with a mixture of m-phenylenediamine and diaminodiphenylmethane, fully drain it after impregnation, and then solidify and shape it to increase its rigidity to facilitate subsequent splicing and molding;

[0035] Step 5: Figure 3 As shown, the grid cloth substrates are interlaced horizontally and vertically through the notches to form a filler block. Among them, the grid cloth substrates of corresponding sizes and quantities are processed according to the required filler diameter, and are assembled into a regular filler block in a pre-made fixed mold, and finally fixed with a fixed hoop on the periphery of the filler block.

[0036] Wherein, the diameter of the basalt continuous fiber thick filament in step 1 is 0.10-0.50 mm.

[0037] In step 4, the mixture of m-phenylenediamine and diaminodiphenylmethane is used for impregnation. During the impregnation process, in addition to directly using the mixture of m-phenylenediamine and diaminodiphenylmethane, other compounds may also be added, such as a mixture of triphenyl phosphate and phenol, toluenediamine, etc., but are not limited to these two types, and other types of epoxy resins may also be included to adjust the curing effect.

[0038] In step 5, the regular packing blocks are assembled, the packing block insertion angle is 0-180 degrees, the height of each packing plate is 50-300 mm, the diameter of each packing plate is 100-2000 mm, and the fixing hoop is a basalt continuous fiber cloth with a wire diameter of 9 μm-24 μm.

[0039] Embodiment 1:

[0040] Select basalt continuous fiber coarse wire with a wire diameter of 0.10mm to 0.50mm, and the mesh number of the woven wire mesh is 40-80 mesh, and it is woven into a basalt grid mesh cloth substrate using a warp knitted directional structure. The grid mesh cloth substrate is cut into the required structure by a shearing machine, and then solidified by a chemical process, and the solidified substrate is spliced ​​and finally assembled into a regular filler block. The filler block splicing angle is 30° (the splicing angle is optional from 0 to 180°), and the fixing hoop is a basalt continuous fiber cloth with a wire diameter of 9μm to 24μm.

[0041] like Figure 1 As shown, in this embodiment, a plurality of substrates arranged longitudinally are inserted on a plurality of substrates arranged transversely, and finally a cylindrical filler block is formed, and the periphery of the block is fixed by a fixing hoop.

[0042] Example 2: In Example 1, the chemical curing method is as follows: m-phenylenediamine and diaminodiphenylmethane are mixed in a mass ratio of 45:55, 15g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, and after the impregnation is completed, it is fully drained, and then cured at 35°C to 50°C for 5 to 7 hours.

[0043] Example 3: In Example 1, the chemical curing method is as follows: m-phenylenediamine and diaminodiphenylmethane are mixed in a mass ratio of 55:45, 23g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 35°C to 50°C for 5 to 7 hours.

[0044] Example 4: In Example 1, the chemical curing method is as follows: m-phenylenediamine and diaminodiphenylmethane are mixed in a mass ratio of 65:35, 30g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 35°C to 50°C for 5 to 7 hours.

[0045] Embodiment 5:

[0046] In Example 1, the chemical curing method is as follows: m-phenylenediamine, diaminodiphenylmethane, triphenyl phosphate and phenol are mixed in a mass ratio of 38:32:12:18, 15 g of the above mixture is used for every 100 g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 19°C to 40°C for 9 to 11 hours.

[0047] Example 6: In Example 1, the chemical curing method is as follows: m-phenylenediamine, diaminodiphenylmethane, triphenyl phosphate and phenol are mixed in a mass ratio of 45:35:10:15, 23g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, and after the impregnation is completed, it is fully drained, and then cured at 19°C to 40°C for 9 to 11 hours.

[0048] Example 7: In Example 1, the chemical curing method is as follows: m-phenylenediamine, diaminodiphenylmethane, triphenyl phosphate and phenol are mixed in a mass ratio of 45:35:8:12, 32g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 19°C to 40°C for 9 to 11 hours.

[0049] Embodiment 8:

[0050] In Example 1, the chemical curing method is as follows: m-phenylenediamine, diaminodiphenylmethane and toluenediamine are mixed in a mass ratio of 48:32:20, 16 g of the above mixture is used for every 100 g of standard resin, the cut basalt grid mesh substrate is impregnated, and after the impregnation is completed, it is fully drained, and then cured at 125°C to 150°C for 4 to 6 hours.

[0051] Example 9: In Example 1, the chemical curing method is as follows: m-phenylenediamine, diaminodiphenylmethane and toluenediamine are mixed in a mass ratio of 14:8:5, 26g of the above mixture is used for every 100g of standard resin, the cut basalt grid mesh substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 125°C to 150°C for 4 to 6 hours.

[0052] Example 10: In Example 1, the method of chemical curing is as follows: m-phenylenediamine, diaminodiphenylmethane, and toluenediamine are mixed in a mass ratio of 55:28:17, 35 g of the above mixture is used for every 100 g of standard resin, the cut basalt grid mesh cloth substrate is impregnated, the impregnation is completed and the substrate is fully drained, and then cured at 125°C to 150°C for 4 to 6 hours.

[0053] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A process for producing a basalt grid cloth structured packing, characterized in that: include: Step 1, merging basalt continuous fiber monofilaments into basalt continuous fiber thick filaments; Step 2: Processing the basalt continuous fiber filaments obtained in step 1 into a basalt grid mesh base material through a warp knitting machine; Step 3, cutting the grid mesh substrate obtained in step 2 into a desired structure, and processing notches at equal intervals on one side of the substrate; Step 4: Curing and shaping the substrate obtained in step 3 by chemical methods; Step 5: The grid mesh base material is inserted together horizontally and vertically through the notches to form a filler block; Among them, in the step 4, a chemical method is adopted: m-phenylenediamine and diaminodiphenylmethane are mixed in a mass ratio of 45:55 to 65:35, and 15g to 30g of the above-mentioned mixture is used for every 100g of standard resin to impregnate the cut basalt grid mesh substrate, and after the impregnation is completed, it is fully drained, and then cured at 35°C to 50°C for 5 to 7 hours to form; In the step 4, another chemical method is used: m-phenylenediamine, diaminodiphenylmethane, triphenyl phosphate and phenol are mixed in a mass ratio of 38:32:12:18 to 5:35:8:12, and 15g to 32g of the above-mentioned mixture is used for every 100g of standard resin to impregnate the cut basalt grid mesh substrate, and after the impregnation is completed, it is fully drained, and then cured at 19°C to 40°C for 9 to 11 hours; In the step 4, another chemical method is adopted: m-phenylenediamine, diaminodiphenylmethane and toluenediamine are mixed in a mass ratio of 48:32:20 to 55:28:17, 16 g to 35 g of the above-mentioned mixture is used for every 100 g of standard resin, and the cut basalt grid mesh substrate is impregnated. After the impregnation is completed, it is fully drained, and then cured at 125°C to 150°C for 4 to 6 hours.

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