Preparation and evaluation of low-temperature liquid-phase dechlorination agent for reformed oil
In order to reduce the impact of chloride introduction in the production of reforming units,a low-temperature and high-efficiency liquid-phase reformed oil dechlorination agent was prepared using a"one pot method"with molecular sieves and alkali metal oxides as the main components.The influence factors of the performance of the dechlorination agent were investigated,and the dechlorination effect was evaluated in an industrial unit.The results showed that the compressive strength of the dechlorination agent was 77 N/cm,the chlorine capacity was greater than 20%,and there was no mud phe-nomenon after soaking in water for 24 h.Under the conditions of reaction temperature of 5-40℃,ad-sorption pressure of 0.3-1.8 MPa,and mass space velocity of 0.9-11.7 h-1,the prepared dechlorination agent had good dechlorination performance,and the chlorine content of the dechlorinated oil was less than 0.5 μg/g.Under the conditions of industrial feed rate of 5-9 L/h,mass space velocity of 3.3 h-1,re-action temperature of 30-40℃,and adsorption pressure of 1.8 MPa,after cumulative operation of 260 d,the chlorine content of reformed oil was less than 1.0 μg/g.The dechlorination effect of the pro-duced dechlorination agent was comparable to that of imported dechlorination agents,meeting the re-quirements for the use of dechlorination agents in in-dustrial unit.
reformed oildechlorination agentmolecular sievealkali metal
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维普
