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Attapulgite clay drying agent dedicated to automobile-used braking gas circuit

A technology of attapulgite clay and desiccant, which is applied in other chemical processes, dispersion particle separation, chemical instruments and methods, etc., can solve the problems of low moisture absorption rate, high price, environmental pollution, etc., and achieve high moisture absorption rate and low cost , excellent performance

Inactive Publication Date: 2016-02-03
蒋寿悟
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The moisture absorption rate of quicklime and silica gel is only about 20%, and the moisture absorption rate is very small at low temperature, and there is a problem of environmental pollution after disposal
Molecular sieves have relatively good performance, with a moisture absorption rate of 24%, but they are expensive, and are generally only used as desiccants and catalysts in petrochemical industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Example 1: produce the desiccant of the present invention according to the following process steps: first, attapulgite beneficiation, dry grinding 200 mesh; secondly, compound by weight percentage, attapulgite clay 60%, molecular sieve 30%, chloride 10%; Then, make pellets with a diameter of 0.5mm; finally, activate the finished product by calcination at 400°C and pack it.

[0010] The shape of the product is spherical, the bulk density is 700 g / L, the compressive strength is ≥25N / particle, the particle size distribution is ≥95%, the static moisture absorption rate is ≥30%, the wear rate is ≤0.2%, and the moisture content of the package is ≤1.5%. .

example 2

[0011] Example 2: produce the desiccant of the present invention according to the following process steps: first, attapulgite beneficiation, dry grinding 200 orders; secondly, compound by weight percentage, attapulgite clay 80%, molecular sieve 20%; then, pelletize, The diameter is 3.0mm; finally, the finished product is activated by roasting at 500°C and packaged.

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PUM

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Abstract

An attapulgite clay drying agent dedicated to an automobile-used braking gas circuit is prepared according to the following steps: first, ore dressing, drying and grinding; next, compounding according to a proportion; then, pelletizing; finally, carrying out calcination and activization to obtain a finished product, and packaging.

Description

technical field [0001] The invention specifically relates to a special attapulgite clay desiccant for brake air passages of automobiles. Background technique [0002] In the air brake system of motor vehicles, due to the frequent changes of compressed air, the air temperature drops, resulting in water accumulation in the brake air circuit, which in turn causes corrosion of metal components in the brake system, cracks in rubber seals, and failure of lubricating grease dispersion. , pipeline blockage and other failures seriously affect the safety of driving. In order to solve this problem and adapt to the development requirements of the automobile industry, in recent years, the use of compressed air drying devices - compressed air dryers has been gradually promoted at home and abroad. It is installed in the vehicle brake air circuit and filled with air in the dryer. The desiccant acts as a dry compressed air to improve the effectiveness and safety of the air brake system. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01D53/28
Inventor 蒋寿悟
Owner 蒋寿悟
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