炼油技术与工程 ›› 2022, Vol. 52 ›› Issue (5): 6-10.

• 加工工艺 • 上一篇    下一篇

炼油厂VOCs吸收-吸附耦合工艺研究

刘洋,王新,刘忠生,李宝忠,马锐   

  1. 中国石油化工股份有限公司大连石油化工研究院，辽宁省大连市 116041
  • 收稿日期:2022-02-16 出版日期:2022-05-15 发布日期:2022-05-17
  • 通讯作者: 马锐,工程师。联系电话： 0411-39699957，E-mail:maruilupct@163.com。
  • 作者简介:刘洋，工程师，硕士，2010年毕业于辽宁石油化工大学,主要从事VOCs及恶臭气体治理。联系电话：0411-39699120，E-mail:liuyang.fshy@sinopec.com。
  • 基金资助:
    国家自然科学基金联合基金项目（U20B6004）；中国石化科技部项目（总合-HB2012）

Study on refinery VOCs absorption-adsorption coupling process

Liu Yang, Wang Xin, Liu Zhongsheng, Li Baozhong, Ma Rui   

  1. SINOPEC Dalian Research Institute of Petroleum and Petrochemicals, Dalian, Liaoning 116041
  • Received:2022-02-16 Online:2022-05-15 Published:2022-05-17

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摘要： 采用负载浸渍法，将活性金属铜引入活性炭孔道内部，并且对其进行N2吸附-脱附及透射电镜表征。使用改性后的AC-2活性炭吸附剂吸附脱除苯模型化合物，当入口苯质量浓度为6.5 g/m3、体积空速为1 000 h-1、吸附温度为20 ℃时，穿透时间为13 h，吸附量为132 g。经过8个吸附-再生周期，AC-2活性炭吸附剂仍可将固定床吸附器出口苯质量浓度控制在30 mg/m3以下。使用改性后的AC-2活性炭吸附剂吸收-吸附脱除石脑油中的VOCs(挥发性有机物)，在进气口VOCs质量浓度为100~150 g/m3、体积空速为1 000 h-1、吸附温度为20 ℃的条件下，其穿透时间为4.5 h。经过4个柴油吸收-吸附-再生周期，AC-2活性炭吸附剂仍维持较稳定的脱VOCs性能。热脱附模型相较于常温脱附模式，更加适用于活性炭吸附剂的脱附再生。

关键词: 活性炭吸附剂, 吸附, 吸收-吸附, 再生

Abstract: The immobilization of the active metal copper into activated carbon support is carried out with impregnation methods, and is characterized by N2 absorption-adsorption and transmission electron microscope. The modified AC-2 activated carbon is used to adsorb benzene model compounds. When the inlet benzene concentration is 6.5 g/m3, the space velocity is 1 000 h-1, and the adsorption temperature is 20 ℃, the breakthrough time and adsorption capacity is 13 h and 132 g. After eight adsorption-regeneration cycles, AC-2 activated carbon adsorbent can still control the outlet concentration of fixed bed adsorber below 30 mg/m3.The modified AC-2 activated carbon is also used to absorb and adsorb naphtha volatile VOCs. When the VOCs concentration at the air inlet is 100~150 g/m3, the space velocity is 1 000 h-1 and the adsorption temperature is 20 ℃, the breakthrough time is 4.5 h. After four diesel absorption-adsorption-regeneration cycles, AC-2 activated carbon can still maintain a relatively stable VOCs removal performance. Compared with the normal temperature desorption model, the thermal desorption model is more suitable for the desorption and regeneration of activated carbon adsorbent.

Key words: actived carbon adsorbent, adsorption,absorption-adsorption, regeneration