费-托合成油加氢脱氧催化剂研究  

RESEARCH ON HYDROGENATION CATALYST FOR REMOVAL OF ORGANIC OXIDES FROM FISCHER-TROPSCH SYNTHETIC OIL

作　　者：段红玲[1] 商雁超 王延臻[1] 宋春敏[1] 张安 姜玉婷 Duan Hongling;Shang Yanchao;Wang Yanzhen;Song Chunmin;Zhang An;Jiang Yuting(College of Chemical Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580

出　　处：《石油炼制与化工》2020年第11期27-34,共8页Petroleum Processing and Petrochemicals

摘　　要：费-托合成油中存在少量的含氧化合物,会影响烯烃聚合制备聚α-烯烃(PAO)的收率和产物选择性。将费-托合成油中的含氧化合物(主要为醛、酮类)选择性加氢生成相应的醇,然后通过醇与金属钠反应生成醇钠,再通过蒸馏脱除醇钠,达到脱除含氧化合物的目的。分别将Cu,Cu-Zn,Cu-K,Cu-Ni,Pt负载在α-Al 2O 3和γ-Al 2O 3上制备催化剂,考察催化剂对费-托合成模拟油的加氢脱氧反应性能,并对催化剂进行表征。结果表明:费-托合成油中主要组分为烯烃和烷烃,少量含氧化合物主要为酮和醛;通过加氢可以将费-托合成油中的含氧化合物转化为醇,但对烯烃有饱和作用,以α-Al 2O 3为载体的催化剂的选择性优于以γ-Al 2O 3为载体的催化剂;Cu-Znα-Al 2O 3催化剂效果最好,在温度为180℃、压力为1 MPa、体积空速为2 h-1、氢油体积比为50的条件下进行模拟油的加氢试验,烯烃损失为12%,醛加氢转化率达到95.3%,没有发现醇加氢生成烃类的反应发生。Fischer-Tropsch(F-T)synthetic oil contains a small amount of organic oxides,which affect the yield and selectivity of PAO prepared by olefin polymerization.The removal of organic oxides,such as aldehydes and ketones,in F-T synthetic oils was carried out by a process as follows:the oxygen-containing compounds(mainly aldehydes and ketones)in the F-T synthetic oils were first selectively hydrogenated to produce corresponding alcohols followed by translating into sodium alcoholate by reaction of alcohols and sodium metal,and then the sodium alcoholate were removed by distillation to remove the oxygen-containing compounds.In this thesis,Cu,Cu-Zn,Cu-K,Cu-Ni and Pt catalysts were prepared usingα-Al 2O 3 andγ-Al 2O 3 as supports,respectively,and characterized and tested for the hydrodeoxygenation performance of F-T synthetic oils.The research data indicated that the main components of F-T synthetic oils were olefins and alkanes,and the oxygen-containing compounds were mainly small amounts of alcohols,ketones and aldehydes.The hydrogenation can remove oxides,but has a saturation effect on olefins.The test results showed that the selectivity of the catalyst withα-Al 2O 3 as the carrier is better than the catalyst withγ-Al 2O 3.Cu-Znα-Al 2O 3 catalyst had the best effect.Under the conditions of a pressure of 1 MPa,a temperature of 180℃,a space velocity of 2 h-1 and a volume ratio of hydrogen oil of 50,and the simulated oil as test feed,the olefins loss was 12%and the aldehyde hydrogenation conversion rate reached 95.3%,and no reaction of alcohol hydrogenation to hydrocarbons was found.

关 键 词：费-托合成油 含氧化合物 氧化铝 加氢催化剂 

分 类 号：TQ317[化学工程—高聚物工业] TQ426