The isohexane product of over 95% purity can be produced by hydrofining of reforming raffinate oil to remove olefins and aromatics followed by distillation to cut appropriate fraction. The process scheme developed is economically feasible. When the reforming raffinate oil is hydrofined with high-activity nickel catalyst with 30% ∼35% NiO prepared in the laboratory, the bromine number of hydrofined product is no greater than 5. 0 mgBr/(100 g), the maximum benzene content is 0. 001%. When the hydrogenated oil is distillated in the distillation unit with 24 theoretical plates to cut the isohexane, the high-purity isohexane of 60 ∼62. 5 °C distillation is obtained by utilizing small bottles to collect distillate products per 0.5 ∼Cfraction. Separation of high-purity fraction of isohexane products can be realized in the commercial units. The economic benefit of the aromatic extraction workshop can be improved if isohexane by-product production scheme is adopted.

With C9 fraction of a boiling range of 155-220 ℃ from ethylene cracking as the feedstock,the laboratory tests of distillation cutting,comparison and evaluation of hydrogenation catalyst and hydrogenated gasoline blending were performed to study C9 feedstock properties,hydrogenation technology,catalyst performance and utilization of hydrogenated products.In a 200 L laboratory distillation unit,the heavy components and detrimental impurities in C9 distillate were cut out,and the products cut from distillation were used as good feedstock for hydrogenation.The comparison of product properties,inlet temperature and bed temperature rise,etc in the hydrogenation evaluation test showed that L series C9 fraction catalyst for one and two stage hydrogenation processed offered a better hydrogenation activity,selectivity and stability than the reference catalyst.The hydrogenated products from one-stage hydrogenation of C9 fraction can be used as the blending component of gasoline,and blending ratio can be as high as 10%.Whereas,the hydrogenated products from two-stage hydrogenation of C9 fraction can be used to produce solvent oil with high aromatics by separation.

以含K2O的Al2O3-TiO2复合物为催化剂载体,考察了浸渍液pH值、浸渍液浓度、浸渍时间和焙烧温度对Pd/Al2O3 -TiO2催化剂颗粒的蛋壳厚度、Pd粒子粒径等的影响.采用BET、TEM等方法对所制备的催化剂进行了表征,选择较佳制备条件的Pd/Al2O3-TiO2催化剂进行了C4馏分选择加氢活性评价.结果表明,随着浸渍液pH值的减小,催化剂颗粒的蛋壳厚度增加；浸渍溶液的浓度越高,浸渍时间越长,越有利于金属在催化剂内层的分布；浸渍液的pN值并不会影响Pd/Al2O3-TiO2催化剂Pd粒子最终的大小.催化剂焙烧温度越高,Pd粒子的平均直径越大,Pd的分散度越小.在反应温度40℃、压力1.5 MPa、体积空速8.0 h-1、氢/炔摩尔比2.5的条件下,较佳制备条件的Pd/Al2O3-TiO2催化剂催化C4馏分加氢的炔烃转化率73％、丁二烯选择性85％、丁二烯损失率2.5％.

分别采用浸渍法和混捏法对载体进行碱性助剂改性,再以浸渍法制备出Pd/Al2O3-TiO2催化剂；采用BET,XRD,Py-IR,NH3-TPD等方法对载体和催化剂进行表征；以含炔碳四馏分为原料,考察碱性助剂改性对Pd/Al2O3-TiO2催化剂选择性加氢活性和选择性的影响.结果表明:改性方法对载体的晶相结构没有影响,载体的XRD谱图均存在明显的锐钛矿和氧化铝特征峰；与浸渍法相比,混捏法改性载体的孔体积、平均孔径和最可几孔径较大,总酸量、中强酸量和强酸量较低,有助于提高加氢催化剂的选择性和稳定性.用混捏法改性载体制备催化剂的炔烃转化率为73％,丁二烯选择性为85％,丁二烯损失为2.5％,选择性高于未改性催化剂.

The present invention relates to a low-grade diesel hydrogenation catalyst and a preparation method; the catalyst to W-Mo-Ni-P as the active component, an alkali metal, alkaline earth metal or rare earth metal-promoted, silica-alumina in the carrier, by weight percentage of alkali, alkaline earth or rare earth metal is 0.2 ~ 10%, WO3 was 5% ~ 25%, MoO3 was 8 ~ 20%, NiO of 2 ~ 9%, P of 1.0 to 5%, the balance being alumina oxide support; evaluation for catalytic cracking feedstock oil is a mixed oil and coker gas oil, the catalyst exhibits excellent activity and stability in the reaction conditions and the stability test, can remove a hybrid diesel inferior more than 90% of sulfur ,nitrogen.

The iron-based high syndiotactic 1,2-polybutadiene was synthesized. The characterization of molecular structure and the evaluation of basic performance of the synthesized product were carried out and compared with RB series by Japan Synthetic Rubber Co. The results showed that the catalyst system had a higher activity,the polymerization product had a higher yield and exhibited a lower melting point(lower than 130 ℃) and a great tensile strength(20 MPa).

The synthesis of high syndiotactic 1,2-polybutadiene with iron catalyst was introduced in this paper,and the molecular structure and tensile properties of 1,2-polybutadiene were characterized.The results showed that the polymerization product had a higher yield and exhibited lower melting point(130℃),fairly strong tensile strength.The antioxidant D may carry on the effective protection to it when the content was 1%.With synthetic rubber after this polymer blending modification in-situ,then it displayed certain thermosplastic elastomer nature.

利用超临界流体萃取分馏技术,将哈国减压渣油分离成10～15个窄馏分,并对窄馏分的密度、平均分子量、元素硫、氮、Fe、Ni、V的含量和粘度进行分析,对窄馏分的平均沸点进行预测。通过对各窄馏分性质分析,提出对哈国减压渣油的加工方案。

The effects of several copolymers with different molecular structure as pour-point depressant in diesel fuel and synergism of their blend were investigated.The results showed the nucleation ability,the dispersion performance and the synergism of the copolymers were mainly affected by their molecular structures.The analytical results of transmission electron microscope(TEM) showed that ethylene-vinyl acetate copolymer(EVA) had a better nucleation ability and MC14-MA-MCNR1R2 possessed an excellent dispersion performance.Using their blends,both the pour-point and the cold filter plugging point of diesel fuel were depressed to a satisfactory extent,and the wax crystal particles dispersed uniformly and went smaller.The particles size of 95% ranged from 30 nm to 40 nm.The method of freezing etch in TEM observation was a good way for the research on wax crystal conformation and the mechanism of inter-reaction between pour-point depressant and wax crystal.

The synthetical method of NaA zeolite membrane on a tubular support by in-situ aging and microwave heating was studied.A new-style NaA zeolite membrane with 3μm thickness was successfully preparated.The analytic results of XRD and SEM showed that the support was covered with a layer of a compact and seriate NaA zeolite membrane.At 120℃,the aqueous solution with 15% of ethylene glycol mass fraction was separated with the new one by pervaporation,the separation coefficient exceeded 10000,the permeation flux reached 10.06kg/(m2·h).

Non-catalytic hydrolysis producing EG has high energy and cost.Catalytic hydrolysis of EO on an anionic exchange resin catalysts for the production of EG and the process conditions were studied.It was shown that the catalysts both had high activity and selectivity,and excellent stability.Both the conversion of EO and the selectivity of EG could reach 100%,under the condition of 100?℃,1.0?MPa,1.5?h~(-1),the mol ratio of H_2O and EO 6.5.

A-type zeolite membrane was synthesized by the vacuum seeding and secondary growth method.The pervaporation and vapor permeation processes for the separation of ethylene glycol/water mixture,and the effect of separation temperature and EG concentration on the flux were studied.The separation stability of the A-type zeolite membrane reached more than 1 000 h.The separation selectivity and stability were kept at a high value,and the separation factor and flux at 120℃ were 10 000 and 10 kg·m-2·h-1 respectively.

Technical features of petroleum microbial fermentation and its application in Dushanzi General Petrochemical Works were introduced. In comparison with the conventional solvent dewaxing process, the microbial dewaxing has unreplacable advantages of simple process scheme, low investment cost of equipment, flexibility in feedstocks altering, and steady product quality. The pour point of dewaxed oil is below - 40°C and the yield is about 90%. Production practice showed that, this process has applicable value in small to medium batch production of oil products with extra low pour point.