Sublimed sulfur in the sulfur-based acid production system
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Where is it produced? What are the ways to avoid it, and how to do it?
It is mainly generated in the sulfur incineration furnace. How to avoid it and how to operate: 1. During normal operation, regularly check the color of the flame; an orange-red color is ideal. 2. Periodically analyze gas concentration. 3. Sublimated sulfur is most likely to be generated during startup and shutdown. At such times, it is necessary to adjust the amount of sulfur applied using the sulfur injection gun based on the wind volume, in order to prevent insufficient combustion due to low wind volume, which could lead to the formation of sublimated sulfur. If sublimated sulfur is produced, the sight glass of the sulfur burning burner will become obscured by it. Conduct timely summaries after starting and stopping the operation to optimize furnace control.
If the outlet temperature of the sulfur incineration furnace is higher than the temperature at the furnace tail, there is also a tendency for sublimated sulfur to be generated.
Sublimated sulfur is most likely to be generated during operation; in particular, after feeding the material, the air supply must not be interrupted for any reason. If the fan stops operating, the material supply should be halted immediately, and the oxygen-sulfur ratio must be kept above 2.5
Primarily, during the start-up and shutdown of the unit, it is necessary to follow the loading procedure: first introduce air and then add sulfur； Conversely, reduce sulfur first and then reduce wind.
It is best to ensure accurate display of air flow and sulfur gun flow, and to carry out production by feeding materials in an appropriate air/sulfur liquid ratio. The difficulty lies in the fact that liquid sulfur flowmeters are hard to come by; the inexpensive ones are not very reliable, while the more advanced ones are too expensive and unnecessary. Once the operator becomes more familiar with the process, they should be able to determine the approximate ratio based on the fan speed and the sulfide pump speed. This post was last edited by zpqing on 2008-6-30 15:42]