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Method for producing oil-gas separation glass fiber filter paper through hot air drying

A technology of hot air drying and glass fiber base paper, which is applied in separation methods, filter paper, filtration separation, etc., can solve problems such as increased resistance, decreased bond strength between paper layers, and decreased porosity of paper sheets, and achieves improved filtration performance. The effect of improving the bonding strength and increasing the amount of diffusion

Inactive Publication Date: 2019-04-12
尹精华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for hot air drying to produce glass fiber filter paper for oil and gas separation in view of the product performance problems caused by the above-mentioned traditional process, which is to dry the glass fiber base paper prepared by wet molding with double-sided hot air The glass fiber filter paper is obtained by removing moisture by means of the method. The Z direction of the filter paper is heated evenly, which avoids the thermal migration of the resin in the paper sheet, and can solve the problem of the decrease of the paper porosity, the increase of the resistance, and the bond strength between the paper layers caused by the traditional drying process. falling problem

Method used

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  • Method for producing oil-gas separation glass fiber filter paper through hot air drying
  • Method for producing oil-gas separation glass fiber filter paper through hot air drying
  • Method for producing oil-gas separation glass fiber filter paper through hot air drying

Examples

Experimental program
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Effect test

Embodiment 1

[0013] The glass fiber base paper prepared by the conventional wet forming method is impregnated with resin and sent into a hot-air drying oven, and the paper advances in the hot-air drying oven at a paper feeding speed of 25m / min, while using 55℃-90℃ successively , 90°C-120°C, 120°C-150°C, stepwise heating hot air to dry both sides of the resin-impregnated glass fiber base paper at the same time until the moisture content is less than 5%, and the glass fiber filter paper is obtained. Among them, the resin is composed of 15 parts of phenolic resin, 1 part of curing agent PF7302B and 220 parts of methanol by weight.

Embodiment 2

[0015] The glass fiber base paper prepared by the existing conventional wet forming method is impregnated with resin and then sent into a hot air drying oven, and the paper advances in the hot air drying oven at a paper feeding speed of 40m / min, and at the same time, 55℃-90℃ , 90°C-120°C, 120°C-150°C, stepwise heating hot air to dry both sides of the resin-impregnated glass fiber base paper at the same time until the moisture content is less than 5%, and the glass fiber filter paper is obtained. Among them, the resin is composed of 14 parts of phenolic resin, 1 part of curing agent PF7302B and 220 parts of methanol by weight.

Embodiment 3

[0017] The glass fiber base paper prepared by the existing conventional wet forming method is impregnated with resin and then sent into a hot air drying oven. The paper advances in the hot air drying oven at a paper feeding speed of 34m / min. At the same time, 55℃-90℃ is adopted in sequence. , 90°C-120°C, 120°C-150°C, stepwise heating hot air to dry both sides of the resin-impregnated glass fiber base paper at the same time until the moisture content is less than 5%, and the glass fiber filter paper is obtained. Among them, the resin is composed of 16 parts of phenolic resin, 1 part of curing agent PF7302B and 220 parts of methanol by weight.

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Abstract

The invention relates to a method for producing oil-gas separation glass fiber filter paper through hot air drying, which comprises the following steps of: impregnating resin into glass fiber base paper prepared by using a prior wet forming method; and simultaneously carrying out staged drying on two surfaces of the resin-impregnated glass fiber base paper by using hot air until the water contentis less than 5%. By adopting a double-sided hot air drying process to produce the oil-gas separation glass fiber filter paper, the mechanical property and filtering and separating performance of the filter paper are obviously improved, the problem of contradiction between the filtering efficiency and the resistance of a filter material which always puzzles people in the prior process can be solved, so that the filtrating and separatiing performance of the filter material can be fully exerted.

Description

Technical field [0001] The invention belongs to filtration and separation technology, and specifically relates to a method for producing oil-gas separation glass fiber filter paper by hot air drying technology. Background technique [0002] The traditional process route of oil and gas separation materials is: glass fiber base paper is prepared by wet molding, then resin is impregnated, and dried to remove moisture by heating on the surface of the dryer. However, when the resin-impregnated material enters the surface of the dryer for the drying process, when the surface of the paper sheet contacts the surface of the heated dryer, the surface of the paper first receives heat and heats up, and the moisture in the paper is along the z direction (in the text) The z direction is the thickness direction of the paper). The resin is carried by the water to the surface of the paper due to the capillary force. Under high drying rate, the surface moisture evaporates quickly. Under the action...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H13/40D21F5/18D21H17/48D21H17/06D21H17/00
CPCD21F5/18D21H13/40D21H17/00D21H17/06D21H17/48D21H27/08
Inventor 尹精华周晓兵
Owner 尹精华
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