CAJ | 학술논문

以不同减压馏分油（VGO）/减压渣油（VR）混合比例的重油为研究对象，采用基团贡献模型（UNIFAC）预测了常规催化裂化工艺（FCC）与分区催化裂化工艺（ZCC）中原料的汽化率。在所考察的催化裂化油剂混合条件下，原料的汽化率均大于70%（质量分数）。高油剂混合温度使饱和蒸气压升高，而大雾化水蒸气量有利于降低油气分压使泡露点温度降低，均使原料汽化率升高。VR掺炼比例对原料汽化率影响很大，当掺炼比例从30%（质量分数）提高至50%（质量分数）时，原料汽化率降低5.44%～7.53%（质量分数）。当VR掺炼比例较低（<50%）时，常规FCC工艺比ZCC工艺的原料汽化率高，当VR掺炼比例达到50%时，ZCC工艺的分开进料方式更有利于原料的汽化。这取决于VGO对VR的分散作用和VGO与VR的竞争汽化造成的影响。
이불동감압류분유（VGO）/감압사유（VR）혼합비례적중유위연구대상，채용기단공헌모형（UNIFAC）예측료상규최화열화공예（FCC）여분구최화열화공예（ZCC）중원료적기화솔。재소고찰적최화열화유제혼합조건하，원료적기화솔균대우70%（질량분수）。고유제혼합온도사포화증기압승고，이대무화수증기량유리우강저유기분압사포로점온도강저，균사원료기화솔승고。VR참련비례대원료기화솔영향흔대，당참련비례종30%（질량분수）제고지50%（질량분수）시，원료기화솔강저5.44%～7.53%（질량분수）。당VR참련비례교저（<50%）시，상규FCC공예비ZCC공예적원료기화솔고，당VR참련비례체도50%시，ZCC공예적분개진료방식경유리우원료적기화。저취결우VGO대VR적분산작용화VGO여VR적경쟁기화조성적영향。
A novel zoning catalytic cracking (ZCC), which processed vacuum gas oil (VGO) and vacuum residue (VR) in different zones under respective optimal conditions to avoid competitive adsorption effect, was proposed. Aiming at comparing routine fluid catalytic cracking (FCC) with ZCC, vaporization of feedstock was predicted with the UNIFAC model. Vaporization of feedstock was higher than 70% (mass) in both ZCC and FCC under investigated conditions. Higher oil-catalyst-mixing temperature, less atomized steam and lower VR blending ratio were beneficial to feedstock vaporization. Vaporization of feedstock decreased by 5.44%-7.53%(mass) when VR blending ratio increased from 30%(mass) to 50%(mass). When VR blending ratio was lower than 50%(mass), vaporization of separate feedstocks in ZCC was lower than that of blending feedstock in routine FCC. When VR blending ratio reached 50%(mass), separate feeding used in ZCC was more beneficial to vaporization of feedstock. That was the result of the influence of dispersion effect of VGO on VR and competitive vaporization between VGO and VR.