13X
Molecular Sieve
13X分子筛，又称钠X分子筛，是一种碱金属硅铝酸盐，由硅氧和铝氧四面体组成 FAU 型的骨架结构，主晶孔为十二元环结构。X型分子筛硅铝比不一样，其晶体结构不同，13X分子筛硅铝比为SiO2/AL2O3≈2.6-3.0，孔径为10A，可吸附临界直径大于3.64A小于10A的任何分子，凡3A、4A、5A型分子筛可吸附的分子，13X分子筛都能吸附。此外，13X分子筛又吸附较大临界直径的分了，如某些芳烃和支链烃。远影生产的13X分子筛具有吸附速度快、再生次数多、抗碎强度高，抗污染能力强，寿命长等特点。
13X分子筛应用非常广泛，例如，空气分离装置中气体的净化，H2O、CO2及碳氢化合物的脱除；天然气、液化石油气、液态烷烃类（丙烷，丁烷等）的脱水和脱硫（脱除 H2S 及硫醇等）；一般气体（如压缩空气、永久性气体）的深度干燥；氨合成气的干燥及净化；气雾剂推进剂的脱硫除臭；裂解气脱CO2；催化剂协载体；水和二氧化碳共吸附；水和硫化氢气体共吸附等。
13X分子筛再生与3A、4A、5A分子筛再生类似，可用加热并同时吹扫或抽空的方法再生。
13X分子筛常温下密封，置于阴凉干燥处，相对湿度不大于90%；避免接触水、酸、碱、油，远离氧化物。
Summary
13X molecular sieve, also called Natrium X molecular sieve, Zeolite 13X, is a kind of alkali metal silicon aluminate, its skeleton structure composed of silica and alumina tetrahedral FAU, main crystal holes are twelve ring structures. To the X type molecular sieve, if silicon aluminum ratio is not the same, crystal structures are different. 13X molecular sieve silicon aluminum ratio≈2.6-3.0 (SiO2/AL2O3≈2.6-3.0), aperture 10A, it can adsorb any molecules which critical diameter is greater than 3.64A and less than 10A, as long as the molecules can be adsorbed by 3A, 4A, 5A type molecular sieves, they also can be adsorbed by 13X molecular sieves. Furthermore, 13X molecular sieve can adsorb bigger critical diameter molecules, such as aromatic hydrocarbons and branched chain hydrocarbons.
Application
Yuanying 13X molecular sieve has excellent adsorption performance, high mechanical strength, large specific surface areas and big pore volume, can be widely used in industry, for example, purifying the gas in the air separation device, removal of H2O, CO2 and hydrocarbons; natural gas, liquefied petroleum gas, liquid alkanes (propane, butane) dehydration and desulphurization (removal of H2S and thiol); general gas (such as compressed air, permanent gases) depth drying; ammonia synthesis gas drying and purifying; aerosol, propellant desulfurization and deodorization; pyrolysis gas removal of CO2; catalyst carrier; water and carbon dioxide coadsorption; water and hydrogen sulfide gas coadsorption etc..
Regeneration
3A, 4A, 5A, 10X, 13X molecular sieves can be regenerated by the method of heating with purging or evacuation.
1. Moisture removal: Normally 150～320℃ dry gas such as nitrogen, air, hydrogen, saturated hydrocarbon under 0.3～0.5kg/cm through molecular sieve bed layer 3-4 hours, then filled with cold dry gas to the adsorber about 2-3 hours, isolated from the air and cooling to room temperature;
2. Removing organic matter: Used vapour instead of organic matter, then repeat step 1. Also can be regenerated by 200-350℃through hot vapour or inert gases;
3. Removal of gas substances: by the way of decompression.
On room temperature, relative humidity not more than 90%; not lay bare in the air; keep away from water, acid and soda.
Storage
On room temperature, relative humidity not more than 90%; not lay bare in the air; keep away from water, acid and soda
