催化裂化再生器燃烧处理炼化企业VOCs技术开发

NEW OXIDATION PROCESS TECHNOLOGY FOR VOCs TREATMENT IN REFINING AND CHEMICAL ENTERPRISES

开发了一种利用炼化企业正常生产状态下的催化裂化再生器燃烧处理挥发性有机物(VOCs)的工艺工程技术,用以对炼油厂不同污染源所排放的不同浓度与种类的VOCs进行低能耗、高效率的处理。通过控制进入再生器的VOCs废气浓度与温度,同时应用高等级的阻火器、单向阀等设备,以确保VOCs废气输送及处理过程的安全性。由于催化裂化催化剂表面所沉积的重金属具有一定的催化氧化作用,使该技术在相对较低的燃烧温度下(670~720℃)具有良好的VOCs脱除效果。工业应用结果表明,经处理后所排放烟气中的VOCs质量浓度不大于10 mg m3,满足中国石油化工股份有限公司关于VOCs焚烧处理的控制标准(不大于15 mg m3),同时对FCC装置的正常生产、产品性质以及再生烟气的脱硫脱硝等无影响。

A new process technology for treatment of VOCs by using FCC regenerator in normal production state of refinery was developed,which is used for high efficiency and low energy consumption treatment of VOCs with different concentrations and types discharged from different pollution sources of refinery.By controlling the concentration and temperature of VOCs waste gas entering the regenerator,and applying high grade flame arrester,one-way valve and other safety measures,the safety of VOCs waste gas transportation and treatment process was ensured.Due to the catalytic oxidation performance of heavy metals deposited on the surface of catalytic cracking catalysts,the developed technology has a good VOCs removal effect at a relative low combustion temperature(670-720℃).The industrial applications showed that after the treatment the VOCs concentration in the flue gas was less than 10 mg m 3,which fully meets higher requirements of SINOPEC control standard for VOCs(no more than 15 mg m 3).Meanwhile,the technology had no impact on the normal production of FCCU,product properties,and desulfurization and denitrogenation of regenerator flue gas.