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首页> 外文期刊>Journal of industrial and engineering chemistry >Simultaneous removal of sulphide and nickel by the compound of Chitosan Schiff Base from crude oil under microwave irradiation
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Simultaneous removal of sulphide and nickel by the compound of Chitosan Schiff Base from crude oil under microwave irradiation

机译：壳聚糖席夫碱化合物在微波辐射下同时从原油中去除硫化物和镍

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摘要

A study has been carried out for simultaneous desulfurization and demetalization by electric desalting from crude oil based on the oxidation of alkyl thiophene and nickel compounds with the compound of Chitosan Schiff Base under the condition of microwave irradiation (SDDM). Besides, an investigation has been made about the influence of Chitosan Schiff Base compound dose, initial temperature, and microwave time on desulfurization and demetalization. By using the optimized conditions for SDDM, up to 56% of sulfur and 82% of nickel removal rates were achieved for model compounds in crude oil samples. With the same conditions but without microwave the removal efficiency was lower than 56% for sulfur model compound and than 82% for nickel porphyrin in crude oil samples. Additionally, in order to develop a fundamental understanding of the SDDM mechanism of sulfides, a molecular simulation of sulfur compounds was performed with both the Hartree-Fock (HF) and second-order Moller-Plesset (MP2) levels of theory for the calculation of reaction kinetic rate by using Gaussian 03 program package. In comparison with conventional desulfurization and demetalization technology, the proposed SDDM process can accomplish the simultaneous removal of sulfur and nickel compounds from crude oil under relatively mild conditions.
机译：已经进行了通过在微波辐射（SDDM）条件下用烷基壳聚糖席夫碱化合物氧化烷基噻吩和镍化合物对原油进行电脱盐同时脱硫和脱金属的研究。此外，还研究了壳聚糖席夫碱化合物的用量，初始温度和微波时间对脱硫和脱金属的影响。通过使用SDDM的优化条件，原油样品中的模型化合物可实现高达56％的硫和82％的镍去除率。在相同条件下但没有微波的情况下，原油样品中硫模型化合物的去除效率低于56％，镍卟啉的去除效率低于82％。此外，为了加深对硫化物SDDM机理的了解，使用Hartree-Fock（HF）和二阶Moller-Plesset（MP2）理论水平对硫化合物进行了分子模拟，以计算硫化物。使用高斯03程序包的反应动力学速率。与常规脱硫和脱金属技术相比，所提出的SDDM工艺可以在相对温和的条件下同时从原油中去除硫和镍化合物。

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