主催: 日本エネルギー学会, 石炭科学部会, コークス工学研究部会, 重質油部会
共催: 石炭・炭素資源有効利用研究会
会議名: 第59回石炭科学会議
開催地: 札幌・道民活動センターかでる2.7（ハイブリッド開催）
開催日: 2022/10/20 - 2022/10/21
p. 64-65
Fouling deposits in crude oil heat exchanger contain organic compounds and iron compounds. The effect of iron compounds on the formation of the deposits was examined. Mixtures of asphaltene (As) and iron compounds (FeS, α-Fe2O3) were thermally treated at 365°C for 8 h. Approximately 60 % of toluene-insoluble fractions were recovered from As with and without iron compounds. The fractions were investigated by elemental analysis, LDI/TOF/MS and IR. The average molecular models of the fractions were determined using these measured data. The models of the fractions prepared from As/-, As/FeS and As/Fe2O3 showed polyaromatic structure. The number of aromatic rings of the fraction prepared from As/Fe2O3 was slightly larger than that of the fractions prepared from As/- and As/FeS. This result suggested lattice oxygen of α-Fe2O3 proceeded thermal decomposition and condensation reaction of As.
