Desulfuration, denitration and calcium sulfate whisker coproduction process for NOx recovery

摘要: The invention relates to a desulfuration, denitration and calcium sulfate whisker coproduction process for NOx recovery. comprises the steps of absorbing SO2 from flue gas in an absorption column by formulated absorbent, then, recovering through analysis, preparing sulfite whiskers reaction, further anhydrous whiskers, regenerating solution electrolysis. has beneficial effects that problem recycling is solved, recovery ratio not lower than 85%; becomes producing high-added-value products such as nitric acid like, direct current consumed electrolyzer reduced, quality byproduct higher.