145- The feather-shaped separator is used in the design of a specialized gas-liquid-solid separator for gas separation at the outlet of flue gas hypergravity desulfurization units

This post was last edited by luoli519 on 2022-11-30 at 17:01. In previous technical discussions, we analyzed together the vane-type demister used in wet flue gas scrubber systems, which enables efficient and stable separation of gas, liquid, and solids from flue gas, as well as fog removal, desalination, and anti-clogging functions. The flue gas wet desulfurization tower unit is primarily used for the wet desulfurization of flue gases with high or very high flow rates, and it is applied in wet desulfurization processes such as those involving catalytically regenerated flue gases from refining companies, flue gases from circulating fluidized bed boilers in power stations, and flue gases from boilers in cogeneration plants. Such as the EXXON-WGS process package, BELCO process package, EDV process package, etc.

This post was last edited by luoli519 on 2020-3-19 at 12:03. The wet supergravity flue gas desulfurization device is mainly used for systems with moderate to small flue gas volumes. Its main advantages are its small footprint, low investment cost, and high operational flexibility. It is widely used in projects such as wet flue gas desulfurization for improving the quality of sulfur exhaust gas incinerators, wet flue gas desulfurization for catalyst regeneration on small and medium scales, amine desulfurization in small and medium-sized natural gas stations, wet flue gas desulfurization in fertilizer plants, wet flue gas desulfurization in sulfuric acid plants, small and medium-sized steam boilers, and desulfurization of coke oven gas on small scales.

This post was last edited by luoli519 on 2020-3-19 at 12:00. The diagram below shows a simplified flowchart of the wet supergravity desulfurization device:

As can be seen from the flowchart above, hypergravity desulfurization is a counter-current interfacial reaction between gas and liquid phases. The efficiency of desulfurization depends on thorough and intense mixing of the gas and liquid phases in order to increase the reaction interface and the driving force for mass transfer during the reaction. Similar to large-capacity flue gas wet desulfurization scrubber systems, the exhaust gas that has been desulfurized through thorough reaction in a gas-liquid countercurrent flow contains a large amount of droplets and mist from the desulfurization reaction fluid, as well as the salts and alkalis dissolved in them; therefore, a gas-liquid-solid separator that is resistant to clogging, efficient, and highly adaptable in operation is necessary to purify this gas stream.

This post was last edited by luoli519 on 2020-11-2 at 15:41. In hypergravity desulfurization systems, companies tend to focus on the system itself, paying insufficient attention to the separation of air streams entering and leaving the hypergravity device. This often results in excessive liquid in the incoming and outgoing air streams, leading to high costs associated with the investment, operation, and maintenance of pipelines and equipment upstream and downstream.

This post was last edited by luoli519 on 2024-4-7 at 10:23. The image below shows the exhaust gas from a supergravity desulfurization unit used by a certain company, which relies on separation sedimentation towers that incur high costs in terms of investment and operation.

The last edit to this post was made by luoli519 on 2024-4-7 at 10:23. In some coking enterprises, the gas separation unit used for supergravity desulfurization goes to the other extreme: simple mesh separators that are inexpensive are employed, which result in liquid flooding and high pressure drops; as a consequence, the processing capacity has to be reduced just to keep the system operating. The figure below shows the mesh separator used for gas separation in the hypergravity desulfurization unit:

This post was last edited by luoli519 on 2022-11-30 at 17:01. For designers and owners who have a comprehensive technical understanding of hypergravity desulfurization systems, in addition to paying attention to the hypergravity devices themselves, the corresponding matching equipment for gas inlet and outlet purification is the feather separator.

This post was last edited by luoli519 on 2024-4-7 at 10:23. The diagram below shows the hypergravity desulfurization process designed by a well-known domestic design team for a petrochemical company; it is provided for everyone’s analysis and discussion:

This post was last edited by luoli519 on 2020-3-19 at 12:52. The supergravity desulfurization process diagram provided by this renowned design team for its clients has the following features: 1. The vane separator installed in the exhaust pipeline of the supergravity desulfurization unit is placed directly opposite to the unit, in close proximity to it; the desulfurization liquid captured by this vane separator is directly fed into the liquid inlet pipe at the top of the supergravity desulfurization unit to replenish the liquid there. This not only **reduces investment in pipelines and equipment, but also offers a valuable solution in situations where space for modifications is very limited. 2. Considering the pressure fluctuations in the upstream and downstream processes, this system is also equipped with an induced draft fan as a backup. 3. The air streams entering and leaving the hypergravity desulfurization device undergo heat exchange within the system; heating the exhaust air with the incoming air can increase its temperature, which is beneficial for enhancing the thermal lift of the exhaust gases inside the chimney, especially in cases where the exhaust gases are discharged directly through the chimney. The exhaust gas absorbs heat from the intake gas, effectively reducing its temperature, which facilitates the solubility of gases in the desulfurization solution during the hypergravity desulfurization reaction. Especially in high-temperature raw gas operating conditions, the two complement each other well. I’m absolutely thrilled by this solution.