选用低含硫的廉价轻质油为原料，经加氢脱芳烃得到合格的链烷烃稀释剂。对多种催化剂进行了筛选，从中筛选出高芳烃饱和性能的催化剂，并考察了反应温度、压力、空速、氢油比、预处理条件等因素对催化剂活性的影响，确定了较佳的工艺条件。1000h的寿命试验结果表明，所选的催化剂具有良好的活性稳定性。经切割后的产品性能完全符合链烷烃稀释剂的指标，可替代进口稀释剂。 Use low-sulfur light-weight low-cost oil as raw material, the hydrodearomatization paraffin diluent was qualified. A variety of catalysts were screened and the catalysts with high aromatic saturation were screened out. The effects of reaction temperature, pressure, space velocity, hydrogen and oil ratio, pretreatment conditions on the catalyst activity were investigated. condition. Lifetime test results at 1000 h indicate that the selected catalyst has good activity stability. After cutting the product performance in full compliance with the indicators of paraffin diluent, can replace imported diluent.