Selective non-catalytic reduction (SNCR) technology of GE Company is applied to the CO burner of 3.5 Mt/a RFCC unit in Guangxi Petrochemical Company,CNPC.The results showed that using SNCR process,the NOx emission in RFCC flue gas decreases from 200 400 mg/m3 (standard state) to 70-130 mg/m3 (standard state) and meets the emission standard of pollutants for petroleum refining industry in which NOx emission is not more than 200 mg/m3 (standard state).It has little influence on the temperature of CO burner in RFCC unit.No effect on the pressure of the CO burner and pH and NH3-N of sewage in FGD unit is observed.The SNCR process is simple and easy to be revamped.The material and energy consumption is also low.The denitration efficiency is as high as 72 % if ammonia escape is less than 8 mg/m3.
通过对广西石化公司重油催化裂化分馏塔发生的结盐冲塔现象进行分析,对比分馏塔结盐前后产品质量和工艺参数,对在线水洗的操作方案进行了评述,并提出了几点预防分馏塔结盐的措施。
Hydrophobic polyacrylamide was an important water-soluble hydrophobically associating polymer,which could be synthesized by a variety of ways.Homogeneous copolymerization and surface reactive monomer method was combined to synthesize hydrophobic polyacrylamide.At first,a surface active hydrophobic associating monomer Span 80-AA which had surfactant active,was synthesized from Span80 and acrylacid,then the monomer Span80-AA was polymerized with acryl amide.Reaction time,initiator concentration,solvent ratio,large hydrophobic monomer content and temperature on the viscosity and molecular weight of polymer was investigated,thus the optimal experimental conditions were obtained.
描述了中国石油广西石化公司重油催化裂化装置的小型自动加料系统的工艺流程、控制系统、特点以及使用情况。分析了使用过程中存在的问题,提出了合理的解决方法,半年时间的运行证明解决方法切实可行。