Does the Klaus + flue gas combustion + organic amine SO2 removal technology have viability?
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Does the Klaus + flue gas combustion + organic amine SO2 removal technology have viability? What are the problems? In what areas is there still room for improvement and enhancement?
Low sulfur recovery rate: The formation of SO3 results in a low sulfur recovery rate, high consumption of alkaline solutions, frequent resin replacement, large amounts of wastewater, and slightly lower energy consumption. There is no buffering; corrosion is quite severe. The material selection requirements are stringent, and the operation is rather difficult.
Hydrogenation is not necessary; it requires less investment and offers better environmental benefits. Low sulfur recovery rate: It decreased rather than increased; the low sulfur recovery rate is due to the formation of SO3. Low oxygen level in the incinerator results in low levels of SO3. High consumption of alkaline solution: This is caused by improper design of the operating parameters ； Frequent resin replacement: No need to remove sulfate from the resin. Large amount of wastewater: Less wastewater if desalination is not performed ； Corrosion is relatively severe, and high standards are required for material selection; if the materials are not chosen properly, serious corrosion will not occur in this system at present ； Operation is rather difficult: operating automatic control
Currently, there are selective oxidation techniques combined with supergravity-enhanced desulfurization technologies, which help reduce production costs and achieve excellent results in terms of exhaust gas emissions
Is the sulfur dioxide level high after exhaust gas combustion? Dry desulfurization can reduce the emission of sulfuric acid mist.
At present, to meet local emission standards and the increasingly stringent environmental requirements, the Claus process + flue gas combustion + ammonia-based SO2 removal is the most promising combination of processes. The SO2 is converted into ammonium sulfate, which is then sold as a fertilizer; this approach generates no waste or solid residues, making it environmentally friendly and highly promising. It is a combination of processes that is viewed favorably both domestically and internationally.