March 2015

Plant Design

Determine the design metal temperature for a secondary reformer

An air-burning system should be designed so that there is no maintenance required between scheduled shutdowns every two years. To achieve this, a metal temperature study should be carried out for the design of the pressure parts and for the refractory design.

Sharma, B. K., Fluor Daniel India

In a recent case study, a secondary reformer (Fig. 1) at an ammonia plant using an air-burning facility was registering an inside temperature of 1,373°C, which is on the high side. An air-burning system should be designed so that there is no maintenance required between scheduled shutdowns every two years. To achieve this, a metal temperature study should be carried out for the design of the pressure parts and for the refractory design.     Fig. 1. Diagram of a   secondary reformer.   Image courtesy of RHI AG. Secondary reformers play an important role in the production of ammonia. The goal of reforming is to prepare as pure as possible a gas mixture

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