Kinetic Research Of Caustic Regeneration In Petrochemical Products Caustic Refining

In the presence of sulfides, phenols, naphthenic acid and other non-hydrocarboncompounds in the oil affect the safety of production and petrochemical product quality, causticrefining process can effectively reduce the impurity content, improve product quality, butalkaline washing device discharge of alkaline residue which contains high concentrations ofsulfide, naphthenic acid-sodium, phenolic sodium sodium, neutral oil, residual NaOH and etc,could not be directly discharged into the sewage treatment field, leading enterprise alkalineresidue accumulation. Green chemicals and the deepening of the concept of circular economypromote the advances of the technology of resource recovery and comprehensive utilization foralkaline residue, in order to comprehensive utilization residual NaOH in alkaline residue, someof manufacturers at home and abroad according to the actual production, try using a variety ofalkaline residue regeneration-reuse process, and achieved good economic and environmentalbenefits.In allusion to the characteristics of alkaline residue rich in salt of weak acid with a strongbase, filter regeneration good CuO as the active component, and activated alumina as the carrier,after impregnation, calcination, the catalyst is made for regenerating alkaline residue to producecaustic kinetically. In this study, determine the appropriate time for impregnated after singlefactor experiments, studying the impact of calcinations temperature, calcinations time on thecatalytic capability. The preparation conditions finally are as follows: Cu(NO3)2saturatedsolution impregnation7h, calcined at400℃for6h.Using home-made dynamic regenerationdevice (device flow chart shown in Figure4-1) to study the variation of the nature ofregeneration lye of the empty vector, catalytic dynamic handling the alkaline residue in LPGcaustic refining experiments, and combined with breakthrough curves analysis the production,goes on, penetration and out law of the different segments in bed, finally, according to theinactivation time of dynamic process to calculate the sulfur capacity of catalytic. Sulfurcapacity of catalytic as the evaluation index examined the impact of feed flow rate, bed height(height to diameter ratio), operating temperature, catalyst supported active component and etcfor the dynamic regeneration process of the alkaline residue and the breakthrough curves.The activity of the deactivated catalyst can be returned by burning under certain conditions, single factor experiments to determine the inactivation of the catalytic regeneration operatingconditions, and on this basis, recycling renewable agent activity, experimental results show that:reaction in optimal conditions, renewable in optimal conditions after inactivation, afterrecycling6times, the activity of fresh catalyst declined about14.5%, basically meet therecycling requirements for regenerating alkaline residue to produce caustic kinetically.