Hydrocracking is a crucial technology in the refining and petrochemical sectors. It is of great theoretical and practical significance to deeply understand the mechanism of hydrocracking reactions with the aid of reaction kinetics modeling. This paper recounted the research progress in the kinetic modeling of heavy oil distillation and hydrotreating and shows the methods for computing model parameters corresponding to the modeling method and predicting products. The study showed that the reaction kinetics modeling evolved from the decentralized lumped model based on the distillation range from a macroscopic perspective to a continuous lumped model based on production scenarios and then to a complicated microscopic lumped model at the molecular level. In addition, the study compared the advantages and disadvantages of various models in terms of their capacity to reliably predict the composition of products, the intricacy of parameter estimation, rate coefficients, feed dependence, and experimental data required. It also explained the industrial applicability of the lumped model as well as the construction and method for solving molecular hierarchical reaction networks in molecular lumps. Finally, it gives the development prospects of the lumped kinetic model according to the modeling difficulties, the computing power of computers, and the analysis of technology development trends.

In order to ensure the stable operation of the coal tar suspension bed hydrogenation unit, the asphaltene flocculation and the influencing factors of the raw material were studied. The coal tar asphalt initial floc point determination method was studied, and effects of composition molecular properties and structural parameters of heavy oil on asphaltene flocculation phenomenon in coal tar were analyzed. High temperature coal tar A, middle and low temperature coal tar >320 ℃ heavy fraction B and blending coal tar C（churning oil of A and B）were studied. Initial asphalt flocculation point of sample A, B, C was measured by photometer method. Samples were separated into saturates, aromatic, resin and asphaltene fractions. The coal tars and SARA were characterized by element analysis, molecular weight and NMR. The results showed that these three samples were unstable and asphaltene settled in varying degrees. The colloidal stability order was A>B>C. SARA composition and properties played a decisive role on colloidal stability together. Because sample A had highly condensed ring aromatic hydrocarbon, short and less side chains, large ratio of resin/ asphaltene, the aromaticity and molecular weight of SARA were distribution continuously, so asphaltene dispersion was good. Asphaltene flocculation happened extensively of sample C because of the mismatching of compositions and characters of sample A and B.

The adsorption of Co ²⁺ and Mn ²⁺ in both simulated and industrial PTA wastewater by CH-90 cation exchange resin was investigated. Different parameters including the pH value, contact time and dosage on the adsorption performance were conducted. The optima adsorption capacity in simulated wastewater was obtained under the condition of pH=3.5 and 2 g/L dosage, and the maximum adsorption capacities were 55.4 mg/g, 50.5 mg/g for Co (II) and Mn (II) respectively. While in industrial wastewater the optima dosage reached high up to 24 g/L likely due to the interference of concentrated COD and the unfavorable pH value. The adsorption kinetics data were analyzed which followed the pseudosecondorder kinetics model. It was shown that the CH-90 resin could be regenerated in strong acid solution and then reused for more than 15 times, which therefore greatly reduced the usecost. 

4-Methoxybenzophenone was synthesized from Fridel-crafts acylation of anisole and benzoyl chloride using iodine as catalyst. The effects of reactant ratio，amount of catalyst used，reaction temperature and time were investigated. The suitable reaction conditions were optimized as： anisole was 0.1 mol，anisole / benzoyl chloride mole ratio was 1.0∶1.5, catalyst usage was 1.5 g, reaction temperature was 140 ℃, reaction time was 4 h. The highest yield of 61.68 % is obtained.