渣油临氢热裂化反应性能研究  

STUDY ON THERMAL CRACKING PERFORMANCE OF RESIDUE OIL IN PRESENCE OF HYDROGEN

作　　者：王喜彬[1] 贾丽[1] 刘建锟[1] 杨涛[1] 

机构地区：[1]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《石油炼制与化工》2013年第6期70-74,共5页Petroleum Processing and Petrochemicals

摘　　要：在小型连续装置上进行热裂化试验,探索渣油在高压临氢条件下的热裂化反应规律。采用单段反应器一次通过的操作方式,选择(镍+钒)质量分数高达232.86gμ/g、残炭为19.67%的高金属、高残炭渣油为原料,考察其在不同反应温度和空速下的转化率、残炭降低率、金属脱除率和脱硫率的变化规律。结果表明:在考察的操作条件区间内,当其它条件一定时,随着反应温度的升高,渣油转化率和脱硫率增加,生成油的残炭和金属含量降低;而随着反应空速的增加,渣油转化率和杂质脱除率降低。说明高温、低空速有利于渣油转化和原料中杂质的脱除。在反应温度400～420℃、空速1.0～1.5h-1的操作区间,渣油转化和杂质脱除较为显著。在反应温度420℃、空速1.0h-1时,渣油转化率接近60%,脱硫率为33%;热裂化生成油的残炭为11%,金属镍和钒的质量分数分别为28gμ/g和72gμ/g。Residue oil was cracked in H2 atmosphere at high temperature for examining its thermal cracking performance in a pilot plant in a once-through way. A residue oil with high metal content （Ni＋V=232.86 μg/g） and high carbon residue （19.67%） was used as feedstock. The investigation focuses on the changes of feed conversion and removal of carbon residue, sulfur and metal. The test results indicate that the conversion and desulfurization of feedstock increase and carbon residue and metals in produced oil decrease with the increase of temperature. However, the conversion and desulfurization of feedstock decrease as the liquid hour space velocity increases. High temperature and low velocity can improve the conversion and impurities removal. There are obvious changes in conversion and impurities removal of feedstock in the range of 400～420 ℃ and 1.0～1.5 h-1. The conversion of feedstock can reach to 60%, desulfurization up to 33% and the contents of carbon residue, nickel, vanadium in the cracked oil are 11%, 28 μg/g, 72 μg/g, respectively at conditions of 420 ℃ and 1.0 h-1.

关 键 词：渣油 热裂化 脱金属 脱硫 转化 

分 类 号：TE624[石油与天然气工程—油气加工工程]