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油品中的含硫化合物对石油加工及其产品应用所产生的危害是多方面的,寻求高效经济的脱硫方法具有重要意义。与传统的加氢脱硫法(HDS)相比,生物脱硫法(BDS)具有更广阔的应用前景。利用在北京燕山石化公司采集的含有微生物菌种的样品,以溶于煤油中的硫醇为唯一硫源,在温和条件下,通过细菌适宜的代谢过程进行脱硫。对采得的部分菌种进行初步筛选,并对菌种的最佳反应条件进行初探。实验表明,18号菌种在温度30℃、初始pH7~7.5的条件下,选择培养基A,采用透气性好的封口膜塞进行培养,达到最佳脱硫率为15.4%。该菌种能使煤油中的部分有机硫转化成水溶性硫而被脱除。 相似文献
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通过对炼油厂柴油碱洗废渣的分析,先后测定了碱渣的COD值、硫醇硫含量、碱度和含油量。测定结果表明。柴油碱渣中含浓度很高的恶臭物质和大量的有机物盐。为了进一步鉴定碱渣的成份,分别利用红外光谱和紫外光谱进行分析。结果显示,柴油碱渣中的恶臭污染物主要为硫醇硫、噻吩、酚、环烷酸、脂肪酸等酸性有机物。为废碱渣的处理提供了重要的依据。 相似文献
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Since natural gas is odorless, to assure the customer safety, odorants are added to it to alarm the consumer in the case of a gas leak. Although the odorization is a common practice in natural gas distribution systems, odor fading has been reported in pipelines, which is a great safety risk. This paper summarizes results of experiments conducted to investigate possible chemical and physical mechanisms responsible for odor fading. In these experiments, X-ray photoelectron spectroscopy (XPS) and gas chromatography were used to check the possible interactions of tertiary butyl mercaptan (TBM) as odorant with the pipe material. Evidences of chemisorption, adsorption and desorption of TBM on the iron oxide inside the pipe were observed. It was found that by increasing pressure, rusted surface of the pipe, and temperature or by decreasing the gas flow rate and odorant concentration the mercaptan removal was increased. 相似文献
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