... other advantages. The system applicable to gas with low content of H2S, small air flow, high precision of desulfurization, ... need refueling at fixed period. 4. Applicable to gas with small air flow, high precision of desulfurization. Dry desulfurization ... alcohol, chemical fiber,pharmacy, fertilizer, coking, landfill, coal gas, natural gas, ceramics, food, maize further processing, citric acid, and ...