查看更多>>摘要：The second-generation additive LOP-A for enhancing the propylene output and increasing the octane rating of gasoline developed by the Lanzhou Chemical Research Center under the PetroChina Petrochemical Research Institute has been successfully manufactured at the first attempt in the No. 1 microspheric catalyst unit of the catalyst factory at the Lanzhou Petrochemical Company.
查看更多>>摘要：The thermal upgrading of two residual oils with different characteristics was studied in a laboratory-scale continuous delayed coking unit. The goal was to investigate the influence of the process variables such as temperature, reaction time and additive on liquid yield and products distribution. A maximum liquid yield of 73% was achieved compared to 69% with the commercial unit. This yield was even increased to 75% under the effect of an additive. The fractionation of liquid oil by simulated vacuum distillation showed a high yield of diesel (46.9%), compared to 28% for the commercial unit.
查看更多>>摘要：In March 2007 the SHP-01F type catalyst for the first-stage hydrofining of pyrolysis gasoline developed by the SINOPEC Shanghai Petrochemical Research Institute passed the 72-hour commercial calibration test under full load in the No. 2 pyrolysis gasoline hydrofining unit at the ethylene plant of the SINOPEC Yangzi Branch Company. The calibration results revealed that the average diolefin value was 0 at the first-stage reactor outlet, and the average bromine number was 20.22 gBr_2 /100g at the reactor outlet.
查看更多>>摘要：Paraxylene (PX) is the feedstock for manufacture of pure terephthalic acid (PTA). With the increasing consumption of TPA in China, the demand for PX increases remarkably and has surpassed the supply capability. The Yangzi Petrochemical Company, being optimistic with regard to the PX market, has been keeping track of the global advanced aromatic production technology in pursuit of the low cost PX production techniques and has adopted a high-efficiency novel adsorbent that can increase the PX throughput.
查看更多>>摘要：Two novel ashless additives - benzothiazole derivatives containing boron and chlorine, OBC and BBC, were synthesized. The tribological performances of OBC and BBC at different mass ratios as additives in rapeseed oil (RO) were examined on a four-ball machine. The worn surfaces of the lower steel balls lubricated by oil samples were analyzed by means of scanning electron microscopy (SEM). The test results showed that OBC and BBC had good solubility in the base oil, and could effectively increase the load-carrying capacity of the base oil. The maximum non-seizure load of oil sample containing 1.5 m% BBC was 1117 N, which was 2.3 times as much as that of the base oil. Both OBC and BBC could improve the anti-wear and corrosion inhibiting performance and thermal stability of the base oil, whose initial decomposition temperatures was above 350℃. However, OBC and BBC at different concentrations could increase the friction coefficient of the base oil. The SEM morphology of steel balls lubricated by oil samples containing 1.5 m% additives seemed to be more uniform and smoother than that of the base oil, and the scars formed were very shallow.
查看更多>>摘要：The Sopu Company in Jiangsu province intends to expand its acetic acid capacity in Zhenjiang, Jiangsu province to 1.2 Mt/a by 2009. This company will construct additionally a 600 kt/a acetic unit, and the construction of this project is to be completed in 2009.
查看更多>>摘要：The hexene-1 technology, which the SINOPEC Yanshan Branch Company has successfully developed after ten years of intensive study by its own efforts, has been applied in commercial scale.
查看更多>>摘要：Acetic acid is a basic organic chemical feedstock. China, as the fastest growing market of acetic acid, consumed over two million tons of acetic acid in 2006. Nanjing has regarded the acetic acid industry as the key for development of its petrochemical industry.
查看更多>>摘要：The proton nuclear magnetic resonance spectroscopy (~1H-NMR), the synchronous fluorescence spectrometry (SFS) and the ruthenium ions catalyzed oxidation (RICO) method were used to determine the chemical structure of polyaromatic nucleus in Oman residue fractions. The results of ~1H-NMR analyses showed that the average numbers of aromatic rings in the aromatics, resins and asphaltenes units were 3.2, 5.6 and 8.2, respectively. SFS was used to investigate the distribution of aromatic rings in residue fractions, the main distribution range of aromatic rings in aromatics, resins and asphaltenes were 3—4 rings, 3—5 rings and more than 5 rings, respectively. The aromatic network in residue fractions was oxidized to produce numerous carboxylic acids. The types and content of benzenepolycarboxylic acids, such as phthalic acid, benzenetricarboxylic acids, benzenetetracarboxylic acids, benzenepentacarboxylic acid and benzenehexacarboxylic acid disclosed the condensed types of aromatic nuclei in the core. The biphenyl fraction (BIPH), the cata-condensed fraction (CATA), the peri-condensed fraction (PERI) and the condensed index (BCI) were calculated based on the benzenepolycarboxylic acids formed. The results implied that there was less biphenyl type structures in all residue fractions. The aromatics fraction was almost composed of the cata-condensed type system, and the asphaltenes fraction was wholly composed of the peri-condensed type system, while in the resins fraction co-existed the two types, herein the peri-condensed type was predominant over the cata-condensed type. Based on the analytical results obtained in the study, the components —aromatics, resins and asphaltenes — were given the likely structural models.
查看更多>>摘要：The new flow improvers for super-viscous crude oils were developed via esterification of polybasic high carbon alcohol with methacrylate and copolymerization of monomers followed by animation of copolymers. The structure of the synthesized polymer flow improver additive was confirmed by IR spectroscopy and the crystal structure of the flow improver additives were determined by X-ray diffraction analysis. The structure of wax crystals was also studied at the same time. The results showed that the wax crystal structure was closely related with the crystal structure of the flow improver, which could change the pour point depression and viscosity reduction behavior of the crude oil. When the wax crystal structure matched well with that of the additive, the wax crystals were dispersed satisfactorily, resulting in favorable effects in terms of pour point depression and viscosity reduction. The new synthesized aminated polymer flow improver additive was most efficient for treating super-viscous crude oils. The super-viscous crude oil had a high content of resins and asphaltenes, which might aggregate onto the surface of wax crystals to form blocks to limit the crude oil fluidity. However, amination of copolymers having similar structure with the resins and asphaltenes contained in crude oil could dissolve the huge polar groups to make the deposit formation difficult.
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