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Tag: Ammonia

What about methanol?

The ammonia industry seems to have quite a buzz about it at the moment. As can be glimpsed in our Nitrogen Industry News section this issue, the number of proposed green ammonia production sites continues to grow, as does interest in ammonia as a hydrogen or energy carrier, while the shipping sector continues to seriously consider ammonia as a green fuel candidate for the longer term. The latter prospect could see current ammonia demand double by 2050, although as our article on sustainable nitrogen production on page 22 notes, whether enough renewable power will exist by then to generate that must be seriously doubted.

Successful start-up of a new WSA plant

M. Baerends of Fluor reports on the conception, engineering, construction, commissioning and start-up of a new sulphuric acid plant that replaced an existing acid plant at a European sour gas processing terminal. This highly complex gas processing facility handles sour gas from an off-shore field, containing H2 S that must be removed to meet transmission grid specifications. Various issues encountered, their resolution by the joint owner, Fluor and Topsoe team, and plant operating results are discussed.

A tale of two acid tower systems

All acid towers eventually require replacement. In this article, K. Sirikan, A. Mahecha-Botero et al of NORAM Engineering and Constructors Ltd discuss two recently executed acid tower replacement projects. The first project involved the replacement of a brick-lined tower by an alloy acid tower for a sulphur burning plant in North America. The second project involved the replacement of a brick-lined acid tower with a NORAM designed brick-lined tower for a smelter off gas acid plant in South America. The impacts of various design considerations on acid tower replacement projects are compared, including in-situ replacement versus a new location; brick-lined versus alloy shell, and selection criteria for mist eliminators.