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Ｔ－４９ 新型固体磷酸催化剂，是由具有连续水解速度分布的一系列聚磷酸硅和磷酸硼组成。Ｐ２ Ｏ５ ／Ｈ２Ｏ质量比是该剂固有特性及其应用效果的决定性因素。Ｔ－４９ 催化剂研制中将全过程的优化简化为原料聚磷酸浓度、元素比和焙烧条件三变量问题，制备中改变聚磷酸及其盐的聚合度分布，使Ｔ－４９ 催化剂具有合理的磷水比；在反应环境中按照反应产物酸度等值线图，调节反应器进料含水量，实现了对反应器内催化剂活性和床层压力降的调节和控制，使催化剂具有合适的活性和床层压力降上升速度。Ｔ－４９ 催化剂及其工艺在兰州炼油化工总厂工业应用，取得了良好的效果。
T-49 The new solid phosphoric acid catalyst is composed of a series of polyphosphoric acid silicon and phosphoric acid boron with continuous hydrolysis rate distribution. The P2 O5 / H2O mass ratio is a decisive factor for the inherent properties of the agent and its application. During the preparation of T-49 catalyst, the optimization of the whole process is simplified to the three-variable problem of polyphosphoric acid concentration, elemental ratio and calcination conditions of the raw materials. In the preparation, the polymerization degree distribution of the polyphosphoric acid and its salt is changed to make the T-49 catalyst have reasonable phosphorus Than in the reaction environment in accordance with the reaction product acidity contour map to adjust the water content of the reactor feed to achieve the reactor activity and the pressure drop in the bed to adjust and control so that the catalyst has the appropriate activity and the bed Pressure drop rise speed. T-49 catalyst and its process in Lanzhou Petrochemical Plant industrial applications, and achieved good results.