摘要
针对油基钻屑热脱附过程中能耗高、气味刺鼻和油气品质较低等问题,选用氧化钙(CaO)作为添加剂对油基钻屑热解过程调控,考察了不同CaO添加量和温度对反应工况、产物分布及性质的影响。研究结果表明:(1)随着CaO添加量的上升,油收率上升,水和气收率下降,固相收率先升后降。(2)随着热脱附温度的升高,热脱附固体残渣收率逐渐降低,热脱附油、水、气的收率都有不同程度的上升。(3)添加CaO后,所有温度下,均存在热脱附后油收率有明显的上升,而油气收率明显下降现象。(4)CaO的添加提升了油收率和油中脂肪烃的饱和度,降低了油中硫元素的含量,提升了回收油的附加经济值,降低了水和气收率,尤其是CO_(2)和H_(2)S的产率。引用CaO作为添加剂降低了热脱附工艺对操作环境的大气污染,以及后续流程的脱硫负担,降低了水分蒸发导致的高能耗,为油品与不凝气的再利用创造了有利条件。
Calcium oxide(CaO)was used as additive to regulate the thermal desorption process of oil-based drilling cuttings to reduce the low quality and severe smell of oil and gas.The results showed that:(1)The higher CaO addition ratio,the higher yield of oil and the lower yield of water and gas.The yield of residue increased at first and then decreased.(2)Higher desorption temperature resulted in lower yield of residue and higher yield of oil,water,and gas.(3)The addition of CaO significantly increased oil yield and decreased the yield of oil and gas by different degrees under every temperature.(4)The yield and saturation of hydrocarbons of oil increased,the sulfur content in oil decreased after adding CaO.Therefore adding CaO improved the additional economic value of recycled oil and reduced the water and gas yield,especially the yield of CO_(2) and H_(2)S.The introduction of CaO as an additive reduces the atmospheric pollution of the thermal desorption process to the operating environment,as well as the desulfurization burden of the subsequent process,reduces the high energy consumption caused by water evaporation,and creates favorable conditions for the reuse of oil products and non-condensable gas.
作者
许世佩
王超
李庆远
张炳康
许世伟
张雪琴
王诗颖
丛梦晓
XU Shipei;WANG Chao;LI Qingyuan;ZHANG Bingkang;XU Shiwei;ZHANG Xueqin;WANG Shiying;CONG Mengxiao(Engineering Technology Research Institute Co.,Ltd.of CECEP,Beijing 100082,China;State Key Laboratory of Petroleum Pollution Control,Beijing 102206,China;CNPC Research Institute of Safety and Environmental Technology,Beijing 102206,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2022年第4期1724-1731,共8页
CIESC Journal
基金
国家重点研发计划项目(SQ2020YFC190126)。
关键词
固定床
油基钻屑
脱附
废物处理
回收
环境
fixed-bed
oil-based drilling cuttings
desorption
waste treatment
recovery
environment
