Flue gas desulfurization of desulfurization exhaust gas
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In the liquefied gas refining system, is flue gas desulfurization applied to the exhaust gas from the disulfide tank during alkali solution regeneration?
Have you considered the process feasibility and the emission compliance rate? We here also plan to send some of the waste gas back to the flue gas desulfurization system.
It is under investigation; the biggest issue is the impact on environmental protection criteria related to flue gas desulfurization, as it is difficult to control the corresponding amount of neutralizing alkali and the discharge limits.
Dissulfide tank exhaust can be fed into the flue gas desulfurization system. However, the following points need to be noted: 1. Disulfides cannot be effectively absorbed using existing flue gas washing processes; they must first be oxidized in a furnace to convert into SO2 before entering the existing flue gas washing process for effective absorption. 2. The increased consumption of sodium and alkali depends on the amount of exhaust gas emitted from the carbon disulfide tank. CNPC Dushanzi Petrochemical possesses fully operational plants that run efficiently continuously, and the SO2 content in the flue gas after passing through the sodium-alkali scrubbing system is usually below 10 mg/Nm^3.