Selected Technical Consultation Topics for the **th National Conference on Gas Purification and Sulfur Recovery Technologies

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This post was last edited by liaifeng on 2018-8-4 19:55. Excerpts from technical consultation requests for the 18th National Conference on Gas Purification and Sulfur Recovery Technologies: 1. What are the issues related to the emission of odors and VOCs from the circulating water sedimentation tanks and cooling towers in fixed-bed batch gas generation systems, and what are the appropriate treatment techniques? 2. Issues related to the emission of odors and VOCs from the desulfurization regeneration tank in the wet oxidation process, and the treatment technologies for these emissions? 3. The exhaust gas from the low-temperature methanol washing unit has a high total sulfur content and an unpleasant odor. 4. During the water gas purification process, the potential energy generated during the pressure reduction of CO2 and H2S is not utilized effectively. 5. There are issues with sulfur recovery in our company: ① Ammonia-based desulfurization is used to treat the exhaust gas from sulfur recovery; this results in severe tailing of exhaust gas at the exit of the desulfurization tower. If the amount of ammonia used is reduced, it can lead to excessive levels of sulfur dioxide in the exhaust gas, and the tower itself suffers from severe corrosion. ②When the ammonium sulfate obtained from ammonia-based desulfurization is sent to the thermal-ammonia desulfurization process for separation and packaging, elemental sulfur is present in this ammonium sulfate, which makes it difficult to separate the thermal-ammonium sulfate. Additionally, the ammonium sulfate is yellow in color and is sold as substandard product. 6. Production issues in the synthetic ammonia purification process and corrosion problems in WSA units. 7. Can domestic MDEA solvents meet the requirement that the total sulfur content in the purified exhaust gas is < 20 mg/m3? 8. Effective methods for controlling VOCs from the gas at the top of sewage tanks. 9. Application status of new VOC control technologies for liquid sulfur loading. 10. How can the start-up and shutdown processes of the sulfur unit ensure compliance with emission standards?