ZnMgAl-HTlc催化酯化高酸原油脱酸

 加工高酸原油是炼油厂面临的一大难题。在ZnMgAl类水滑石为催化剂作用下，原油中的环烷酸与乙醇反应生成环烷酸乙酯，可有效降低原油的酸值并降低其对设备的腐蚀性。实验结果表明，ZnMgAl-HTlc是一种有效的酯化脱酸催化剂，反应后其结构基本未变。在醇酸摩尔比3:1，反应温度220℃，反应时间40min，原油和催化剂质量比200时，可使辽河高酸原油的酸值由3.61 mgKOH/g降至0.22 mgKOH/g，能够满足炼油厂在不进行材质升级条件下加工高酸原油的需要。

CATALYTIC ESTERIFICATION DEACIDIFICATION OF THE CRUDE OIL WITH HIGH NAPHTHENIC ACID CONTENT BY ZnMgAl-HTlc

The serious problems, such as corrosion and emulsion might be caused when the crude oil with high naphthenic acid content was processed in refinery. A method was developed by the catalytic esterification process to reduce the acidity of crude oil with high naphthenic acid content. The experimental results demonstrated that ZnMgAl-HTlc was an effective catalyst for the esterification, and structure of ZnMgAl-HTlc hadn’t been changed during the esterification processs. Under the conditions of the molar ratio of alcohol and acid was 3:1, the reaction temperature was 220℃, the reaction time was 40min and the mass ratio of crude oil and catalyst was 200, the acid number of the crude oil was reduced from 3.61mgKOH/ g to 0.22 mgKOH/g. Therefore, this acid removal technique could make the present refineries to processing the crude oil with high naphthenic acid content without upgrading the materials of equipments and pipelines.