化工进展 ›› 2023, Vol. 42 ›› Issue (9): 4929-4938.DOI: 10.16085/j.issn.1000-6613.2022-1921

• 资源与环境化工 • 上一篇    下一篇

终温对油基钻屑热解产物分布和特性影响

邵志国1(), 任雯1, 许世佩1,2(), 聂凡1, 许毓1, 刘龙杰1, 谢水祥1, 李兴春1, 王庆吉1, 谢加才1   

  1. 1.中国石油集团安全环保技术研究院有限公司,北京 102206
    2.中节能工程技术研究院有限公司,北京 100082
  • 收稿日期:2022-10-17 修回日期:2022-12-07 出版日期:2023-09-15 发布日期:2023-09-28
  • 通讯作者: 许世佩
  • 作者简介:邵志国(1982—),男,博士,高级工程师,研究方向为含油固体废物处理与资源化技术。E-mail:shaozhiguo003@163.com
  • 基金资助:
    中国石油天然气集团有限公司“十四五”前瞻基础重大科技项目(2021DJ6605);中国石油集团安全环保技术研究院创新课题(RISE2022KY03)

Influence of final temperature on the distribution and characteristics of oil-based drilling cuttings pyrolysis products

SHAO Zhiguo1(), REN Wen1, XU Shipei1,2(), NIE Fan1, XU Yu1, LIU Longjie1, XIE Shuixiang1, LI Xingchun1, WANG Qingji1, XIE Jiacai1   

  1. 1.CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
    2.Engineering Technology Research Institute Co. , Ltd. of CECEP, Beijing 100082, China
  • Received:2022-10-17 Revised:2022-12-07 Online:2023-09-15 Published:2023-09-28
  • Contact: XU Shipei

摘要:

页岩气开发处理过程中会产生大量对生态环境和人体健康造成严重危害的油基钻屑。为了实现油基钻屑的资源化利用,本文研究了热解终温对油基钻屑热解产物分布和特性的影响。结果表明,油基钻屑中的油水轻组分在50~250℃之间受热汽化逸出,碳酸盐在450℃之后大量分解,油基钻屑中的硫元素在气相中主要以H2S形式存在。随着热处理温度升高,固相残渣收率明显降低,气相收率明显升高,油水收率缓慢升高。测试结果表明,在热解温度不低于300℃时,油基钻屑残渣的含油量可降低至0.3%(质量分数)以下。热解回收油组成主要为白油,沸程与柴油相当,油品品质优秀。油基钻屑热解的气体总产量随着热解温度的升高逐步升高。结果认为,在油基钻屑热解工业化的过程中,应该控制热解终温保持在450℃以下,以避免能量的浪费和有害气体的逸出,同时增加传热效率,保证物料热解完全。

关键词: 油基钻屑, 热解, 红外加热, 产物分析, 环境保护

Abstract:

A large number of oil-based drilling cuttings, which may cause serious harm to the ecological environment and human health, were produced during the process of shale gas exploitation. In order to realize the resource utilization of oil-based drilling cuttings, the influence of pyrolysis final temperature on the distribution and characteristics of oil-based drilling cuttings products was studied. The results showed that oil and gas desorbed substantially between 50℃ and 250℃, and the carbonate decomposed substantially above 450℃ gradually, and the sulfur elements in the oil-based drilling cuttings escaped to gas phase above 450℃, mainly in the form of H2S. At the thermal desorption temperature higher than 300℃, the oil content of the oil-based drilling cutting residuals decreased to below 0.3%. The thermal desorption recovery oil was mainly composed of white oil with a moderate boiling points range equivalent to diesel oil. The total gas yield increased with the increase of thermal desorption temperature. This study could provide basic data for the design of process and device of oil based drilling cuttings thermal desorption.

Key words: oil based drilling cuttings, thermal desorption, infrared heating, products distribution, environmental protection

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