CN111116180A - Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof - Google Patents

Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof Download PDF

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CN111116180A
CN111116180A CN202010088085.9A CN202010088085A CN111116180A CN 111116180 A CN111116180 A CN 111116180A CN 202010088085 A CN202010088085 A CN 202010088085A CN 111116180 A CN111116180 A CN 111116180A
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ceramic
ceramic corrugated
integral
filler
corrugated plate
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谭玉春
刘玲
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Jiangxi Car Field Technology Co Ltd
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Jiangxi Car Field Technology Co Ltd
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Abstract

The invention discloses an integral reticular microporous ceramic corrugated filler, which comprises a filler body, wherein the filler body comprises ceramic corrugated plates (1), the ceramic corrugated plates are bonded and overlapped with each other to form an integral body, a cavity (5) is arranged between the ceramic corrugated plates, boundary fluid (7) which is made of ceramic materials, is internally provided with reticular micropores (6) and is combined with the ceramic corrugated plates into a whole body is arranged in the cavity, and the boundary fluid is formed by soaking a sponge body in ceramic slurry and curing and high-temperature sintering the sponge body. The invention has high separation and rectification efficiency, small equipment load and reduced flow resistance, can greatly reduce the equipment construction and equipment operation cost of enterprises, and achieves the effects of improving the production and increasing the efficiency of the enterprises and saving energy and reducing emission for the state.

Description

Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof
Technical Field
The invention relates to a ceramic corrugated filler, in particular to an integral reticular microporous ceramic corrugated filler.
Background
At present, the packing that is arranged in industrial drying tower, scrubbing tower, absorption tower and the rectification knockout tower equipment such as chemical industry, petrochemical industry, pharmacy, pesticide has a variety, because the buckled plate packing is when piling up each other from top to bottom, the corrugated flow path on its packing contact surface is straight line shape and vertically staggered, therefore the flow direction of liquid between the packing layer will produce the change, makes liquid flow velocity accelerate between the packing layer, and flow resistance reduces to improve liquid rectification separation effect. Therefore, corrugated packing is mostly adopted in the rectification separation tower. The corrugated plate packing has the metal wire mesh corrugated packing formed by welding a stainless steel wire mesh, the ceramic corrugated structured packing formed by combining ceramic corrugated plates and the ceramic wire mesh corrugated packing formed by pouring foamed ceramic. At present, the utilization rate of gaps among wave distances of filling wave crests is almost zero, and holes of the corrugated filling are not utilized, so that the efficiency of the conventional regular corrugated filling cannot be improved, and the bottleneck is reached.
Disclosure of Invention
In view of the above problems of the prior art corrugated packing, the present invention provides an integral reticulated microporous ceramic corrugated packing which not only has high packing pore utilization, high theoretical plate count, high separation efficiency, but also has excellent properties of corrosion resistance, high temperature resistance, light weight, and high porosity.
The invention relates to an integral reticular microporous ceramic corrugated filler, which comprises a filler body, wherein the filler body comprises ceramic corrugated plates, the ceramic corrugated plates are bonded and overlapped with each other to form a whole, a cavity is arranged between the ceramic corrugated plates, a boundary fluid which is made of ceramic materials and is internally provided with reticular micropores and is combined with the ceramic corrugated plates into a whole is arranged in the cavity, and the integral reticular microporous ceramic corrugated filler is prepared according to the following method steps:
a. alumina, silica, high clay, cordierite and Pingxiang Dongqiao mud are used as main raw materials, auxiliary materials and a proper amount of water are subjected to ball milling and mixing to prepare pug, and then the pug is subjected to compression molding to prepare a single ceramic corrugated plate blank,
b. selecting polyurethane sponge bodies with the mesh number matched with the specific surface area of the ceramic corrugated plate blank, processing the sponge bodies into formed sponge bodies with cross sections and lengths corresponding to those of the boundary fluid,
c. preparation of slurry: calcined alumina powder, silica powder, cordierite and kaolin are used as main raw materials, phosphoric acid, a dispersant, a ceramic plasticizer and a proper amount of water are mixed and ball-milled to prepare ceramic slurry,
d. immersing the formed sponge body into ceramic slurry, removing redundant slurry on the surface and two ends of the sponge body in a rolling mode to obtain qualified grouting sponge body, then placing the grouting sponge body into a cavity of a first monomer ceramic corrugated plate blank, superposing a second monomer ceramic corrugated plate blank on the first monomer ceramic corrugated plate blank according to wave crest to wave trough and using ceramic adhesive, placing the grouting sponge body into the cavity of the second ceramic corrugated plate blank, repeating the steps until the last ceramic corrugated plate blank is superposed from bottom to top to obtain a superposed and combined integral ceramic corrugated filler blank,
e. d, sending the integral ceramic corrugated filler blank body prepared in the step d into a drying room, baking for more than 48 hours at the temperature of 100 ℃ and 120 ℃ to solidify the ceramic slurry to obtain an integral ceramic corrugated filler dry blank body,
f. and (2) delivering the integral ceramic corrugated filler dry blank into a natural gas shuttle kiln for sintering, slowly heating to 400-doped sand 500 ℃ at the speed of 1 ℃ per minute, preserving heat for 1-2h, slowly heating to 900-doped sand 1000 ℃ at the speed of 0.5 ℃ per minute, preserving heat for 1-2h, then continuously heating to 1200-doped sand 1300 ℃, preserving heat for half an hour, closing a fire source, slowly cooling the kiln to normal temperature, discharging, and removing the solidified slurry at two ends of the boundary fluid to obtain the integral reticular microporous ceramic corrugated filler.
The ceramic reticular microporous corrugated packing has the advantages of high pore utilization rate, large specific surface area, thermal shock resistance, high temperature resistance, chemical corrosion resistance and good mechanical strength, the three-dimensional mesh structure of the ceramic reticular microporous corrugated packing is used as a gas-liquid exchange interface area, gas and liquid are fully exchanged on the interlayer surface of the ceramic wire mesh packing, the mass transfer efficiency is superior, the traditional metal wire mesh corrugated packing can be widely replaced, the ceramic material has good hydrophilic performance, and the application prospect is very wide.
The invention greatly improves the pore utilization rate of the corrugated packing by using a sponge grouting method for forming a three-dimensional mesh structure in the cavity on the basis of keeping the performance of the existing corrugated packing, and the porosity of the corrugated packing can be improved to more than 80 percent, when the invention is vertically arranged in tower equipment, fine and disordered honeycomb holes (similar to sponge holes) can be formed on a gas-liquid exchange interface at the height of the whole tower equipment, so that compared with the packing which is completely sponge holes, the invention not only can ensure that the packing body has higher compressive strength, but also improve the porosity of the packing body by 70 to 80 percent, the whole ceramic reticular microporous corrugated packing not only has high theoretical plate number and separation efficiency, but also has the excellent characteristics of corrosion resistance, high temperature resistance and light weight, and the weight of the packing with the same specification is only 40 to 50 percent of that of the traditional corrugated packing, the problems that the traditional metal structured packing is not corrosion-resistant and has poor hydrophilic performance are solved.
The weight of the filler of the invention is only 40-50% of that of the traditional ceramic corrugated filler, and the problems of non-corrosion resistance and poor hydrophilic performance of the traditional metal structured filler are solved. The invention has high separation and rectification efficiency and reduced flow resistance, can greatly reduce the equipment construction and equipment operation cost of enterprises, and achieves the effects of improving the production and increasing the efficiency of the enterprises and saving energy and reducing emission for the state.
Drawings
FIG. 1 is a schematic perspective view of an integral reticular microporous ceramic corrugated packing (corrugated plates are regular triangles),
figure 2 is a schematic view of a rectangular corrugated sheet according to the present invention,
figure 3 is a schematic view of a structure in which the corrugated plate of the present invention is formed in a circular arc shape,
fig. 4 is a schematic structural view of the corrugated plate of the present invention in an isosceles trapezoid shape.
In the figure, 1, ceramic corrugated plate 2, adhesive layer 3, wave crest 4, wave trough 5, cavity 6, reticular micropore 7 and boundary fluid.
Detailed Description
In fig. 1, the integral reticular microporous ceramic corrugated packing of the invention comprises a packing body, wherein the packing body comprises ceramic corrugated plates 1, the ceramic corrugated plates are adhered and overlapped with each other to form a whole, a cavity 5 is arranged between the ceramic corrugated plates, the cross section of the cavity is in a regular triangle shape, a boundary fluid 7 which is made of ceramic materials and is integrated with the corrugated plates and internally provided with reticular micropores 6 is arranged in the cavity, and the integral reticular microporous ceramic corrugated packing is manufactured according to the following method steps:
a. using 45 wt% of calcined alumina (200 meshes), 35 wt% of silica (150 meshes), 10 wt% of kaolin (200 meshes), 5 wt% of cordierite (200 meshes) and 5 wt% of Pingxiandonggao mud (150 meshes and 200 meshes) as main raw materials, ceramic plasticizer (such as sodium humate or lignosulfonic acid) which is 2 wt% of the main raw materials, and proper amount of water, ball-milling and mixing to prepare a pug, then compression molding to prepare a single ceramic corrugated plate blank,
b. selecting polyurethane sponge bodies with the mesh number matched with the specific surface area of the ceramic corrugated plate blank according to the specific surface area of the ceramic corrugated plate blank, processing the sponge bodies into formed sponge bodies with cross sections and lengths corresponding to those of boundary fluid, generally selecting the sponge bodies with the pore diameter of 40-60 meshes and the porosity of 60-70%,
c. preparing ceramic slurry: using 45% calcined alumina powder, 40% silica powder, 10% kaolin and 5% cordierite as main raw materials, phosphoric acid accounting for 1% of the total weight of the main raw materials, 0.5% dispersant (such as sodium pyrophosphate or polyvinyl alcohol), 1% ceramic plasticizer and a proper amount of water, mixing and ball-milling to prepare ceramic slurry,
d. immersing the formed sponge body into the ceramic slurry, removing the redundant ceramic slurry on the surface and two ends of the sponge body in a rolling way to obtain the qualified grouting sponge body, placing the corrugated plate blank into a cavity of a first monomer ceramic corrugated plate blank, superposing a second monomer ceramic corrugated plate blank on the first monomer ceramic corrugated plate blank according to wave crests 3 to wave troughs 4 and a bonding layer 2 formed by a ceramic adhesive, placing a grouting sponge body into the cavity of the second ceramic corrugated plate blank, repeating the steps from bottom to top until the last ceramic corrugated plate blank is superposed to obtain a superposed and combined integral ceramic wave filler blank, wherein the ceramic adhesive is 'BO Jing brand-ceramic adhesive' produced by Bao Chang thermal insulation building materials company in Nanchang city or 'ZS-1071 high temperature resistant ceramic adhesive' produced by Sheng Weihua chemical industry Limited company in Beijing city,
e. d, sending the integral ceramic corrugated plate blank body prepared in the step d into a drying room, baking for more than 48 hours at the temperature of 100 ℃ and 120 ℃ to solidify the ceramic slurry to obtain an integral ceramic corrugated filler dry blank body,
f. and (2) delivering the integral ceramic corrugated filler dry blank into a natural gas shuttle kiln for sintering, slowly heating to 400-doped sand 500 ℃ at the speed of 1 ℃ per minute, preserving heat for 1-2h, slowly heating to 900-doped sand 1000 ℃ at the speed of 0.5 ℃ per minute, preserving heat for 1-2h, then continuously heating to 1200-doped sand 1300 ℃, preserving heat for half an hour, closing a fire source, slowly cooling the kiln to normal temperature, discharging, and removing the solidified slurry at two ends of the boundary fluid to obtain the integral reticular microporous ceramic corrugated filler.
The Pingxiang Dongqiao mud is produced in Dongqiao towns in Pingxi province, Pingxiang city, and is high-toughness clay containing more than 45% of silicon oxide and 20-30% of alumina and a small amount of feldspar.
The overall reticular microporous ceramic corrugated filler obtained by the embodiment is detected, and the technical indexes are as follows:
compressive strength: 18.1MPa, bulk specific gravity: 306.3kg/m3
Specific surface area: 756.5m2/m3Void fraction: at a rate of 84.3% by weight,
density: 1.62g/cm3Acid and alkali resistance: 99.5 percent.
The corrugation of the ceramic corrugated plate is in a regular triangle shape (as shown in figure 1). It may also be a rectangular corrugation (as shown in figure 2) in which case the flow openings are provided in the side area and upper plane of the rectangle. Circular arc corrugations (as shown in fig. 3, the Chinese through holes are arranged on the circular arc surface) or isosceles trapezoid corrugations (as shown in fig. 4, the circulation holes are arranged on the equal waist surface and the upper plane).

Claims (2)

1. The utility model provides an integral netted micropore ceramic ripple packs, it includes the packing body, the packing body includes ceramic buckled plate (1), the ceramic buckled plate bonds each other and stacks and forms wholly, cavity (5), its characterized in that have between the ceramic buckled plate: the cavity is internally provided with boundary fluid (7) which is made of ceramic material, has reticular micropores (6) inside and is integrated with the ceramic corrugated plate, and the cavity is manufactured according to the following method steps:
a. alumina, silica, kaolin, cordierite and Pingxiang Dongqiao mud as main raw materials, auxiliary materials and a proper amount of water are ball-milled and mixed to prepare pug, and then the pug is molded into a single ceramic corrugated plate blank,
b. selecting polyurethane sponge bodies with the mesh number matched with the specific surface area of the ceramic corrugated plate blank, processing the sponge bodies into formed sponge bodies with cross sections and lengths corresponding to those of the boundary fluid,
c. preparation of slurry: calcined alumina powder, silica powder, kaolin and cordierite are used as main raw materials, phosphoric acid, a dispersant, a ceramic plasticizer and a proper amount of water are mixed and ball-milled to prepare ceramic slurry,
d. immersing the formed sponge body into the ceramic slurry, removing the redundant slurry on the surface and two ends of the sponge body in a rolling way to obtain a qualified grouting sponge body, then placing the qualified grouting sponge body into a cavity of a first monomer ceramic corrugated plate blank body, superposing a second monomer ceramic corrugated plate blank body on the first monomer ceramic corrugated plate blank body according to wave crest (3) to wave trough (4) and using a ceramic adhesive, placing the grouting sponge body into the cavity of the second ceramic corrugated plate blank body, repeating the steps until the last ceramic corrugated plate blank body is superposed from bottom to top to obtain a superposed and combined integral ceramic corrugated plate filler blank body,
e. d, sending the integral ceramic corrugated filler blank body prepared in the step d into a drying room, baking for more than 48 hours at the temperature of 100 ℃ and 120 ℃ to solidify the ceramic slurry to obtain an integral ceramic corrugated filler dry blank body,
f. and (2) delivering the integral ceramic corrugated filler dry blank into a natural gas shuttle kiln for sintering, slowly heating to 400-doped sand 500 ℃ at the speed of 1 ℃ per minute, preserving heat for 1-2h, slowly heating to 900-doped sand 1000 ℃ at the speed of 0.5 ℃ per minute, preserving heat for 1-2h, then continuously heating to 1200-doped sand 1300 ℃, preserving heat for half an hour, closing a fire source, slowly cooling the kiln to normal temperature, discharging, and removing the solidified slurry at two ends of the boundary fluid to obtain the integral reticular microporous ceramic corrugated filler.
2. The unitary reticulated microporous ceramic corrugated packing of claim 1, wherein: the ceramic plasticizer is sodium humate or lignosulfonic acid.
CN202010088085.9A 2020-02-12 2020-02-12 Integral net-shaped microporous ceramic corrugated packing and manufacturing method thereof Pending CN111116180A (en)

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