In the race to achieve more and deeper desulfurization of fuel oil and other refinery products, the challenges faced by refineries are many. For some, the issue is capacity. Existing H2S氏族植物等气体处理设施可能没有足够的能力来治疗额外的h2天然气。在其他情况下,炼油厂需要增加硫的去除效率以遵守环境法规。
图1:典型的WSA植物
治疗克劳斯尾气
In cases of insufficient sulfur removal rates in Claus plants, a WSA plant can be installed to treat tail gases. Almost all sulfur will still be available as elemental sulfur, while a smaller portion will be processed into concentrated sulfuric acid.
对待H.2S和尾气同时
Here’s an elegant solution for simultaneously treating H2S气体and tail gas to increase overall sulfur removal efficiency and capacity. Configure a WSA plant to achieve both. Assume that after installation of additional HDS capacity, an additional 50% of H2S气体is generated. The problem is that the existing Claus plant can’t handle the extra load. A simple solution is to direct the additional H2S的天然气到WSA植物,也将尾气从现有的氏菌植物身上处理。因此,您可以实现超过99.9%的总硫去除效率,并且容量增加50%。
采用这种方法,现有的克劳斯尾气处理单元的能耗操作变得多余。总硫的三分之二将以元素硫的形式在克劳斯植物中生产,而其余部分将以浓硫酸在WSA植物中产生。设置如下所示。
图2:WSA植物中的硫酸
Burning high-sulfur residual oil and petcoke
如果炼油厂决定所有燃料油的脱硫不是可行的选择怎么办?您可以用炼油厂的高硫残留物做什么?
一种可能性是燃烧残留物以产生炼油厂或附近消费者的蒸汽,热量和动力。
二氧化硫(所以2)富含燃烧的富含烟气可以在TopSOE Snox™植物中进行处理。它转换为本2浓缩硫酸。与其他烟气清洁方法相反,SNOX™在不耗用吸收材料的情况下运行,而不产生需要处理和处理的液体或固体废物。
与其他烟气清洁方法不同,SNOX的经济学™在燃料中获得更好的硫含量。与此同时,随着燃烧气体处理技术的锅炉提供的锅炉提供的锅炉提供更节能的锅炉,其能量高5-7%。
由此产生的碳足迹(较少)2per kWh of energy produced) and the absence of waste benefit both the climate and environment: It may generate carbon credits too. The SNOX™过程是WSA过程的变体。这是下面说明的,以及上游锅炉。
Fig. 3: SNOX™process
研究和答案
We recommend initiating a project by conducting a study to gain insights into how different technologies will perform at a customer’s facility and to discover which solutions are best.
Relevant topics for investigation could include:
无论您的挑战是什么,联系我们的见解,可以帮助您执行增值项目。
请参阅WSA技术的视频:
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