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在粘结型轻油蒸汽化制氢上段催化剂中,钾霞石是作为有效抗碳组份钾的“储存器”而加入的。由于在它的合成过程中引入了CaO而含有小量游离SiO_2。在转化制氢条件下,钾霞石受高温高压和CO_2的作用,还会逐渐释放出游离钾而分解出游离SiO_2。众所周知,转化催化剂中的游离SiO_2是极为有害的物质,它除了能形成酸性中心,导致严重的积碳之外,在高温、高压下的SiO_2迁移还会对设备造成腐蚀和堵
In the cohesive light-oil vaporized hydrogen up-block catalyst, kernias are added as a “reservoir” of effective anti-carbon component potassium. Due to the introduction of CaO during its synthesis, it contains a small amount of free SiO 2. In the conversion of hydrogen production conditions, khakisiane by high temperature and pressure and CO 2 role, but also gradually release of free potassium and decomposition of free SiO_2. As we all know, the conversion of free SiO2 catalyst is extremely harmful substances, in addition to its ability to form acidic centers, leading to serious carbon deposition, the high temperature, high pressure migration of SiO_2 will cause corrosion and plugging