硫转移剂治理催化裂化装置蓝色烟羽问题的效果

为了消除催化裂化装置湿法脱硫带来的蓝色烟羽问题,中海油惠州石化有限公司针对烟气的特性及催化裂化装置的工艺特点,进行了增强型RFS硫转移剂消除蓝色烟羽的试验,对比了加注硫转移剂前后的硫分布、SO_x浓度、烟尘浓度、注碱量和溶解性固体含量等参数的变化,并进行了经济核算。结果表明,采用硫转移剂后,洗涤塔入口烟气SO_x浓度在18h后出现了明显的下降,烟气脱硫洗涤塔外排烟气蓝烟逐步消除,大部分硫转移到了干气中,液化气、酸性水中的硫含量则有所下降。在硫转移剂在系统内藏量(w)达到2.56%后,烟气脱硫洗涤塔入口烟气中硫含量大幅降低,SO_2浓度降至50mg/m^3以下,SO_3浓度降至20mg/m^3以下,湿法脱硫耗碱量削减90%,外排废水中溶解性固体量削减86.3%,外排烟气烟尘浓度下降64.3%,运行费用减少134.37万元/a。

ELIMINATION OF BLUE SMOKE PLUME FROM FCC REGENERATOR WITH SULFUR TRANSFER ADDITIVE

To treat the blue smoke plume of FCCU of CNOOC Huizhou Petrochemicals Company, the RFS sulfur transfer additive were used according to the properties of FCCU and smoke. The changes of sulfur distribution, SOx concentration, soot concentration, alkali quantity and dissolved solids content before and after the addition of sulfur transfer additive as well as the economic accounting were compared. The results showed that the sulfur transfer additive can effectively reduce SOx content in flue gas at inlet of scrubber in 18 hours and the blue smoke of the outlet gas is gradually eliminated. Most of the sulfur is transferred into dry gas, and the sulfur content in LPG and acidic water is decreased. When the sulfur transfer additive in the catalyst inventory reaches 2.56%, much lower sulfur content in flue gas at outlet of scrubber can be obtained, SO2 concentration is below 50 mg/m3, SO3 concentration is less than 20 mg/m3, alkali consumption for wet desulfurization is reduced by 90%, and reduction of soluble solids in the effluent waste water is 86.3%, and the effluent gas smoke concentration decreases by 64.3%, the operation cost is reduced by 1.3437 million Yuan/a.