ASTM D4929-2007 原油中有机氯化物含量的测定用标准试验方法
【英文标准名称】: Standard Test Methods for Determination of Organic Chloride Content in Crude Oil 【原文标准名称】: 原油中有机氯化物含量的测定用标准试验方法 【标准号】: ASTM D4929-2007 【标准状态】: 现行 【国别】: 【发布日期】: 2007 【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: D02.03【标准类型】: (Test Method)【标准水平】: ()【中文主题词】: 氯化物含量;原油;测试【英文主题词】: coulometry; crude oil; organic chloride; organo-chlorine; sodium biphenyl; Crude petroleum products; Distillate fuels; Distillation petroleum products; Organic chloride; Organo-chlorine; Oxidative combustion; Potentiometric method; Sodium biphenyl reducti【摘要】: Organic chloride species are potentially damaging to refinery processes. Hydrochloric acid can be produced in hydrotreating or reforming reactors and the acid accumulates in condensing regions of the refinery. Unexpected concentrations of organic chlorides cannot be effectively neutralized and damage can result. Organic chlorides are not known to be naturally present in crude oils and usually result from cleaning operations at producing sites, pipelines, or tanks. It is important for the oil industry to have common methods available for the determination of organic chlorides in crude oil, particularly when transfer of custody is involved.1.1 These test methods cover the determination of organic chloride (above 1 x03BC;g/g organically-bound chlorine) in crude oils, using either distillation and sodium biphenyl reduction or distillation and microcoulometry. 1.2 These test methods involve the distillation of crude oil test specimens to obtain a naphtha fraction prior to chloride determination. The chloride content of the naphtha fraction of the whole crude oil can thereby be obtained. See Section 5 regarding potential interferences. 1.3 Test Method A covers the determination of organic chloride in the washed naphtha fraction of crude oil by sodium biphenyl reduction followed by potentiometric titration. 1.4 Test Method B covers the determination of organic chloride in the washed naphtha fraction of crude oil by oxidative combustion followed by microcoulometric titration. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. The preferred concentration units are micrograms of chloride per gram of sample. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.【中国标准分类号】: E21【国际标准分类号】: 75_04【页数】: 8P.;A4【正文语种】:
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