Regarding superheated steam, circulating water, and feedwater coils in the nitric acid oxidation furnace
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This post was last edited by “I have no idea” on May 2, 2010, at 22:36. It concerns the superheated steam beneath the oxidation furnace, the boiler circulating water, and the boiler feedwater coils in nitric acid plants. There is information stating that it is necessary to control the flow rate of each coil; what is the purpose of this? Is it to ensure that the temperature of the medium at the exit of each coil is consistent? In terms of design, is it better to use throttle orifice plates to control flow, or to control it by using different pipe diameters in various circuits? How is it performing in practice? We welcome guidance from all experts! ! !
1. Ensuring uniform flow in each coil is necessary to prevent uneven distribution of water entering the two waste boilers; only in this way can the steam temperature and nitrogen oxide temperature at the outlets of these boilers remain consistent, thereby ensuring the safe operation of the boiler coils； 2. The flow rate is controlled using a throttle orifice plate in the design ；