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Using disulfide oil as coke inhibitor to reduce environmental hazards in olefin heaters

机译：使用二硫化油作为焦炭抑制剂以减少烯烃加热器中的环境危害

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This paper describes the feasibility of replacing a sulfur-based additive with the waste by-product disulfide oil (DSO) in steam cracking for the production of olefin. The objective of adding this substance is to reduce coke formation, and consequently, prevent its formation on the inner walls of the reactor and heat exchanger. It is reported that dimethyl sulfide (DMDS) is a source of hydrogen sulfide, and it is hydrogen sulfide that minimizes coke formation, even though the mechanism is not clear. Disulfide oil is a waste material in gas refineries and a source for hydrogen sulfide production; therefore, it makes sense to evaluate its efficacy in minimizing CO production and coke formation during olefin production. Therefore, pilot plant runs were performed to evaluate its feasibility. By using disulfide oil, the total sulfur content of the pyrolysis gasoline will change and be equal to 26.89 mg/L for the unit with a capacity production of 18000 kg/hr. This action not only provides a low-price resource that inhibits coke deposition in olefin plants but also curtails the emission of hydrogen sulfide into the environment.
机译：本文介绍了在蒸汽裂解生产烯烃过程中，用废副产物二硫化油（DSO）替代硫基添加剂的可行性。添加该物质的目的是减少焦炭的形成，并因此防止其在反应器和热交换器的内壁上形成。据报道，二甲基硫醚（DMDS）是硫化氢的来源，并且硫化氢使焦炭的形成最小化，即使机理尚不清楚。二硫化油是天然气精炼厂的废料，是生产硫化氢的来源。因此，有必要评估其在烯烃生产过程中最大程度地减少CO产生和焦炭形成的功效。因此，进行了中试工厂运行以评估其可行性。通过使用二硫化油，热解汽油的总硫含量将发生变化，对于产能为18000 kg / hr的装置，其总含量等于26.89 mg / L。此举不仅提供了一种低价资源，可抑制烯烃工厂中的焦炭沉积，而且可减少向环境中排放硫化氢。

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