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Method for preparing hollow perforated porcelain ball

A ceramic ball and hollow technology, which is applied in the field of preparation of hollow open-pored ceramic balls, can solve the problems of large stacking specific gravity, poor scale-holding capacity, and small porosity, and achieve small stacking specific gravity, reduce bed pressure drop, and porosity. big effect

Inactive Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with pure solid ceramic balls, these novel-designed ceramic balls have been greatly improved, but still have the shortcomings of large bulk density, small porosity, and poor dirt-holding capacity.

Method used

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  • Method for preparing hollow perforated porcelain ball
  • Method for preparing hollow perforated porcelain ball
  • Method for preparing hollow perforated porcelain ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] exist figure 1 Among them, the open-hole hollow ceramic ball is made of china clay, the spherical calcium oxide with a diameter of 14mm is used as the hollow agent, and the porcelain clay with a thickness of 3mm is wrapped outside, pressed into a spherical shape in a mold, and dried to form a porcelain embryo. Open circular holes on the porcelain embryo, the diameter of the holes is 3mm, the number of holes is 10, and the holes are evenly distributed on the spherical surface. Put the open-pored ceramic embryo into the roasting furnace, bake it at 1200°C-1600°C to form open-pored ceramic balls, cool the ceramic balls to room temperature, put them into a hydrochloric acid solution with a concentration of 1mol / L, and dissolve the hollow agent calcium oxide , to prepare hollow open-pore ceramic balls.

Embodiment 2

[0030] exist figure 2 Among them, the open-hole hollow ceramic ball is made of china clay, spherical magnesia with a diameter of 10mm is used as a hollow agent, covered with 3mm thick porcelain clay, pressed into a spherical shape in a mold, and dried to form a porcelain embryo. Open square holes on the porcelain embryo, the side length of the holes is 3mm, the number of holes is 10, and the holes are evenly distributed on the spherical surface. Put the open-pored porcelain embryo into the roasting furnace, bake it into open-pored ceramic balls at 1200°C-1600°C, cool the ceramic balls to room temperature, put them into a hydrochloric acid solution with a concentration of 0.5mol / L, dissolve the hollow agent and oxidize Calcium, made of hollow open-pore ceramic balls.

Embodiment 3

[0032] exist image 3 Among them, the open-hole hollow ceramic ball is made of china clay, the spherical calcium oxide with a diameter of 5mm is used as the hollow agent, and the porcelain clay with a thickness of 1mm is wrapped outside, pressed into a spherical shape in a mold, and dried to form a porcelain embryo. Open triangular holes on the porcelain embryo, the side length of the holes is 1 mm, the number of holes is 6, and the holes are evenly distributed on the spherical surface. Put the open-pored ceramic embryo into the roasting furnace, bake the open-pored ceramic ball at 1200°C-1600°C, cool the ceramic ball to room temperature, put it into 1mol / L hydrochloric acid solution, dissolve the hollow agent calcium oxide, and make Obtain hollow open-pore ceramic balls.

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Abstract

The invention provides a method for preparing a hollow perforated porcelain ball, which comprises the following steps: taking porcelain clay as a raw material; adding a hollowing agent made of a spherical calcium or magnesium material; making into a porcelain body with porcelain clay by an ordinary process; drilling through holes on the porcelain body, wherein the shapes and the number of the through holes are set according to the requirements; roasting at high temperature, and forming a perforated porcelain ball body; placing in an acidic solution; and allowing the hollowing agent to be melted to obtain a hollow perforated porcelain ball. The method has the advantages of simple manufacture, good permeability, large porosity, and small specific gravity of the porcelain ball. The porcelain ball is filled to the top of a reactor and can accommodate a large number of sediments in the reactor, accordingly, the problem of large pressure drop of the reactor can be effectively solved, the operation cycle of a device is prolonged, and the economic benefits are obvious.

Description

technical field [0001] The invention relates to a method for preparing a filling material for reactors in the field of petrochemical industry, in particular to a method for preparing a ceramic material for hollow open-pore ceramic balls. Background technique [0002] In the field of petrochemical industry, ceramic balls are widely used as a kind of filler for reactors. It has good mechanical strength, acid and alkali resistance and corrosion resistance, and can improve the redispersibility of materials in the reactor, reduce the flow resistance, and further Improve the filtration effect of gas and liquid, but its specific gravity is large and the pores are small, so impurities can only be accommodated by accumulation gaps. When oil deposits block the gaps, the pressure drop of the reactor increases, and the device must be shut down for processing. [0003] In order to improve the fouling capacity of ceramic balls, a lot of improvement work has been done on the shape of ceram...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B33/00
Inventor 张会成孙万付刘淑琴耿敬远
Owner CHINA PETROLEUM & CHEM CORP
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