加氢反应器事故后果定量风险评价：预防火灾爆炸，保障安全。

fire or explosion accidents, leading to serious consequences. Quantitative risk assessment of the hydrogenation reactor can help understand the potential hazards and their impact range, which is essential for enterprises to establish emergency plans and take preventive measures to minimize casualties and property losses. In this graduation project, a qualitative analysis of the hazardous and harmful factors in the hydrogenation reactor is first conducted. Based on the potential types of fire and explosion accidents in the reactor, suitable models are selected for the quantitative assessment of the accident consequences, and a quantitative risk assessment software for the hydrogenation reactor is developed using MATLAB. Finally, a case study of a coal tar hydrogenation reactor accident is conducted to quantitatively assess the accident consequences. Keywords: fire, explosion, accident, vapor cloud explosion, risk assessment.