55- Discussion on the design of a new type of three-phase separator with composite weir chambers for the tops of residue stripping towers and wastewater stripping towers
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This post was last edited by luoli519 on 2023-10-2 at 15:59. In recent years, the use of steam or hot nitrogen for the stripping of viscous refinery residue, coal-to-oil reactor effluents, and oily wastewater has been a relatively common practice. However, traditional three-phase separators can no longer meet the requirements for stripping the overhead gas from the stripper, as well as for separating oil and steam condensate. Here, we will discuss together, through examples, the issue of replacing traditional three-phase separators with a new type of composite weir-chamber three-phase separator.
This post was last edited by luoli519 on 2016-11-23 at 17:50. As everyone knows, in foreign natural gas TEG absorption process packages, the TEG regeneration tower is regenerated using a thermal nitrogen stripping tower, and the top of the tower features a new type of three-phase separator with a composite weir chamber.
This post was last edited by luoli519 on 2016-11-23 at 17:52. Recently, many customers using the MDEA process for the \"three removals\" treatment of natural gas have reported high MDEA consumption, as well as oil contamination in the MDEA lean stream, resulting in poor absorption efficiency. Through discussions in this post, the reason might be found.
This post was last edited by luoli519 on 2019-12-25 at 16:14. Let’s first take a look at the images of the new type of three-phase separator with a composite weir chamber, as required in the process package by a well-known engineering company in China:
This schematic diagram of the new composite weir-chamber type three-phase separator structure is used for the steam stripping and recovery of residual oil from coal-to-oil processes.
As can be easily seen from the drawings provided by the engineering company, this new type of composite weir-chamber three-phase separator contains numerous internal components, and its structural layout differs from that of traditional three-phase separators.
This post was last edited by luoli519 on 2016-11-24 at 10:05. First of all, at the end of the liquid-liquid feed inlet on the inside of the separator, there is a finned inlet separation assembly. This finned inlet separation assembly facilitates rapid pre-separation of both the liquid phase and gas phase. Otherwise, the dissolved gas cannot be fully released from the liquid phase, and bubbles will also form in the liquid stream at the outlet; this is especially true when the aqueous phase reaches the wastewater treatment unit, where more bubbles will be released.
Secondly, one will find the hydrostatic rectifying plates, foam-blocking baffles, coalescing components, and composite weir chamber system.
This post was last edited by luoli519 on 2023-10-2 at 16:00. Finally, it seems that the vapor outlet wasn’t mentioned; there should also be a vane separation element. The engineering company is not shown in the structural diagram, but it is explicitly specified in the detailed technical requirements. Please take a look at the attached chart.
Here, I’ve simply posted the accompanying process parameter table and technical requirements for everyone’s discussion: