制氢装置不同原料运行实施及技术经济分析

Implementation of Hydrogen Plant Operation with Different Feeds and Technical and Economical Analysis

简要叙述了扬子石化公司制氢装置进行适应性改造的理由,描述了改造后装置的工艺过程,对装置进行原料适应性改造和催化剂改型的具体情况进行介绍,并分析转化炉炉管管壁温度超温的原因和对策。然后就装置分别采用轻石脑油、液化气和天然气三种不同原料,以及两种不同催化剂的交叉工况,详细计算装置的可变成本的变化情况,并对计算结果进行分析对比。通过原料适应性改造,大幅度降低了装置产品氢气的可变成本;通过转化催化剂改型,解决了炉管外壁温度超设计值的瓶颈,装置首次实现满负荷达标考核;文章结论为制氢装置的经济运行提供了理论指导。

Reasons for the adaptive revamp in hydrogen plant of YPC were briefly introduced,process flow after the revamp was described,details for the feed adaptive revamp and catalyst type changing to the plant were introduced and reasons and countermeasures for over temperature on reformer tube wall were analyzed as well.The product hydrogen variable cost changing was calculated in detail for cases with 3 different kinds of feeds（light naphtha,liquid gas and natural gas） and two different kinds of catalysts.The results from such calculations were analyzed.As a result of the feed adaptive revamp,the product hydrogen variable cost of the plant was decreased largely.As a result of the catalyst type changing,the bottle neck of over design temperature happening on out wall of reformer tubes was settled,which help the plant pass the full load running test.The conclusion provided theoretic introduction on economical operation for the plant.