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The RON,MON,and hydrocarbon group-composition of blended gasolines and the gasoline blending stocks from various processes are reported.The resultsdetermined by NMR are compared with those by standard MON testingmethod and GC for hydrocarbon-type.The method for estimating RON isdiscussed as well. 本文介绍了国内主要汽油组份及掺合汽油的 RON、MON 和烃族组成等性质。将 NMR 法测试的结果与标准试验方法测试的 MON 和气相色谱法测定的族组成进行了对照,并讨论了 RON 的估算方法。 The etherification of FCC gasoline was studied. The octane number of FCC gasoline can be effectively enhanced by reacting methanol with i-C_4-7~= in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst. The results showed that under reaction conditions: t=60-80℃, P=0.8-1.OMPa,LHSV-6-5h~(-1), oil/methanol=16-25 (V), the ether content in the etherified gasoline is higher than 3%(wt) and the RON is increased byl.5-2.0 units. When the IBP-100℃ light FCC gasoline is etherified with methanol and... The etherification of FCC gasoline was studied. The octane number of FCC gasoline can be effectively enhanced by reacting methanol with i-C_4-7~= in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst. The results showed that under reaction conditions: t=60-80℃, P=0.8-1.OMPa,LHSV-6-5h~(-1), oil/methanol=16-25 (V), the ether content in the etherified gasoline is higher than 3%(wt) and the RON is increased byl.5-2.0 units. When the IBP-100℃ light FCC gasoline is etherified with methanol and then blended with the remaining heavy FCC gasoline. the RON is increased by 3.1 units while the life of catalyst is extended. 本项研究提供了一种催化裂化汽油醚化改质,提高其辛烷值的新方法,使催化裂化汽油中的C_4-C_7叔碳烯烃在树脂型催化剂作用下与甲醇反应,生成对应的甲基叔烷基醚,可以有效地提高汽油辛烷值.试验表明在温度为60-80℃、压力为0.7-1.0MPa、空速(V)为3-5h~(-1)、汽油/甲醇为16-25条件下,汽油中的醚含量在3m%以上,汽油RON可提高1.5-2.0单位.如初馏点-100℃的催化裂化轻汽油进行醚化,然后再与未经醚化的重汽油调合,调合汽油平均含醚3-4m%,汽油RON提高3.1个单位,并能延长催化剂使用寿命. The commercial test of CHO-1,a promotor for enhancing the octane number of FCC gasoline,in a 120×10~4t/a FCCU is presented.With a paraffinic feedstock,the RONC of FCC gasoline is enhanced from 88.6~89.1 to 91.0~91.3,and the MONC from 78.5~78.7 to 79.7~80.0,CHO-1 is also adaptive to various FCC situations,such as processing VGO from various crudes,blending residue of Daqing crude into FCC feed,varying recycle ratio or adopting on-ce-through operation,using CO combustion promotor or metal passivator,etc. 本文介绍CHO-1助辛烷值剂在120×10~4t/a催化裂化装置上的使用结果.当系统藏量中助辛烷值剂占13.4%时,加工石蜡基原料,汽油RON从88.6~89.1提高到91~91.3,MON从78.5~78.7提高到79.7~80.对于加工不同种类原油的重馏分油或掺炼大庆减压渣油,采用不同回炼比或单程裂化,以及使用CO助燃剂或金属钝化剂,CHO-1助辛烷值剂均能适应.
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