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What are the raw material of silica gel regeneration of imported silica gel tube?
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What are the raw material of silica gel regeneration of imported silica gel tube? There are 2 major aspects, below small make up one by one:
First, the silica gel adsorption regeneration steam after
Silica gel adsorption of water, water can be removed by thermal desorption way, heating in different ways, such as electric furnace, flue waste heat heating and hot air drying. (related: small knowledge of silica gel regeneration problems should be paid attention to and storage and packaging method)
Temperature controlled desorption heating is appropriate at the temperature of 120--180 DEG C, the blue gel indicator, silica gel, silica gel type DL blue is should be controlled at 100--120 DEG C. A variety of industrial silica gel regeneration when the highest temperature should not exceed the following limits:
Porous silica shall not be higher than 600 DEG c;
Narrow pore silica gel not higher than 200 DEG c;
Blue glue indicator (or silica gel) shall not be higher than 120 DEG c;
Silica alumina gel not higher than 350 DEG C. (related: what types of silica)
After the regeneration of silica gel, the water general control in 2% can be put into use again.
Second, the regeneration of silica gel adsorption of organic impurities after
The roasting method
For the coarse pore silica gel, can be placed in the furnace is gradually heated to 500--600 DEG C, after about 6 - 8 hours to colloidal particle is white or yellow brown to. The narrow pore silica gel, roasting temperature can not exceed 200 DEG C.
The rinsing method
The silica gel in saturated water vapor adsorption reached saturation after soaked in hot water rinsing, and can be used in conjunction with detergent to remove oils or other organic impurities, and then by clean water after washing and drying dehydration.
C. solvent flushing method
According to the silica gel adsorbed organic species, adsorption of organic compounds on silica gel in suitable solvents to dissolve, and then heated to remove solvent silicone.
TAG: latex tube silica gel tube medical silica gel tube food grade silicone tube imported silicone tube
This article from the Shenzhen City Qiyu Silicone Rubber Co., Ltd.: http://m.baozhi.net.cn/news_v.asp? Id=313
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