Activated Zeolite Powder Application in Polyurethane Production
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Author : Gophin Chemical
Update time : 2022-02-21 17:12:13
Activated zeolite powder is the original molecular sieve powder which is activated by high temperature roasting to remove water in the pores, and has excellent dispersibility and strong adsorption activity.
A small amount of moisture is an important issue in the production of polyurethane (PU), and trace amounts of moisture present in polyols can react with isocyanates to generate carbon dioxide and foam. At the same time, a large amount of heat is released, and the operation time is shortened.
When ENISORB-3AP activated zeolite powder is added to polyurethane and other products, it can effectively selectively adsorb trace moisture in typical polyurethane formulations, inhibit the occurrence of side reactions, reduce the generation of bubbles and prolong the operation time.
RHCO+H2O--RNH2+CO2
In addition, in the production of some special paints or coatings, trace moisture in raw materials (solvents, pigments, additives, etc.) will cause adverse effects. For example, in metal or zinc-rich coatings, the presence of trace moisture will interact with reactive Metallic pigments react to generate hydrogen gas, which can lead to excessive pressure in the column and even lead to leaks in extreme environments. The addition of ENISORB-3AP activated zeolite powder can effectively absorb trace moisture in the product and inhibit the formation of hydrogen.
Pressure swing adsorption (PSA) processes are used for the production of high purity hydrogen from a variety of hydrogen-rich streams. The process is based on a physical binding of gas molecules to adsorbent material. The respective force acting between t
By EniSorb CMSCH4 adsorbent, the mixed gas of 30%-70% of CH4 and N2 can be concentrated to more than 92%, the recovery rate is more than 31.6%, and the mixed gas of 50%-50% of CH4 and N2 can be concentrated to more than 95%, The recovery rate is over 47%.
In the selection of the core component - zeolite molecular sieve, the PSA oxygen generator uses sodium molecular sieve (EniSorb 13X-HP), and the VPSA oxygen generator uses lithium molecular sieve (EniSorb Li-X).
