再生条件对贫氧再生硫转移剂脱硫效果的影响

针对两段重叠式贫氧再生装置中硫转移剂效果较差的问题，考察了再生条件对硫转移剂脱硫性能的影响。结果表明：在贫氧再生装置温度满足再生催化剂定碳要求的前提下，第二再生器温度每降低10℃,烟气脱硫率提高4.54百分点；随着焦炭燃烧风耗的提高，第一再生器(一再)烟气中CO含量逐渐降低，且CO体积分数每降低1百分点，烟气脱硫率增加5.27百分点；在主风总量不变情况下，一再主风所占比例每增大1百分点，烟气脱硫率提高0.65百分点。此外，研究发现催化剂藏量变化对硫转移剂的脱硫效果基本没有影响。

EFFECTS OF REGENERATION CONDITIONS ON DESULFURIZATION ACTIVITY OF SULFUR TRANSFER AGENT IN PARTIAL COMBUSTION REGENERATOR

In order to solve the problem of poor effect of sulfur transfer agent in a catalytic cracking unit with two-stage partial combustion regenerator, the influence of regeneration conditions on the desulfurization performance of sulfur transfer agent was investigated. The results show that the flue gas desulfurization (FGD) rate is increased by 4.54 percentage points when the temperature of the oxygen-poor regeneration unit is decreased by 10 ℃. With the increase of coke combustion air consumption, the content of CO in flue gas was gradually decreased. When CO volume fraction is decreased by 1.0 percentage point, the FGD rate can increase by 5.27 percentage points. When the total amount of main air remains unchanged, the FGD rate will increase by 0.65 percentage point with increasing the proportion of main air into the first regenerator by 1 percentage point. In addition, it was found that the change of catalyst inventory had little effect on the desulfurization effect of sulfur transfer agent.