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Coking and steam generation

2015-09-25View Original

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How much coke is needed to produce one ton of steam in the reaction?
Reply #22015-09-25
Around 0.2 tons, I guess; the exact amount depends on a specific analysis of the device in question
Reply #32015-09-27
I really haven’t calculated this yet; here we usually control the steam production by adjusting the slag blending ratio
Reply #42015-09-28
This issue must be based on the catalytic reaction and reheating balance; furthermore, in the carbon monoxide incinerator, the relationship between steam and raw coke is also evident in the case of incomplete regeneration. 1. In terms of counter-reheat balance. Currently, the coking rate is determined based on the main air volume, feed rate, and flue gas analysis, with material balance used to verify the accuracy of the data. The value obtained after verification is the actual coking rate ; 2. Thermal balance calculations are carried out for the regenerative system; typically, the steam generated by this system is based on external heat extraction and internal heat extraction. It is possible to determine the proportion of total heat extracted relative to the heat released during coking combustion – this represents the amount of heat from coking that is used to generate steam ; 3. For the carbon monoxide present in the incompletely regenerated flue gas, it is necessary to burn it in a carbon monoxide incinerator to convert it into carbon dioxide, thereby recovering the chemical heat generated; this heat must also be converted into steam output ; 4. Since the settler contains oil and gas in an overheated state, it is necessary to remove this excess heat in the fractionation tower; the amount of steam required must be determined by taking into account the evaporation capacity of the slurry oil evaporator as well as the steam generation from the second unit. This heat is also released as a result of the combustion of coke ; It is more appropriate to calculate the total amount of steam from 2, 3, and 4 along with the amount of coke produced (using consistent units: steam in tons per hour, and coke in kilograms per hour).

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