26- The feather leaf separator is used in the exhaust and intake system of the vacuum pump in the distillation unit of the sulfolane plant

This post was last edited by luoli519 on 2022-11-30 at 20:51. For the tiny liquid droplets in high-vacuum, high-flow-rate, highly dispersed vacuum systems used in vacuum distillation units, traditional gravity sedimentation methods are not effective. It turns out that the buffer separation tank installed in front of the vacuum pump by a certain design institute for a 10,000-ton per year sulfolane production facility was of small size and had only limited buffering capacity; it was unable to remove the tiny liquid droplets present in the gas drawn under vacuum. The owner’s design institute approached NOVEL Company, requesting to reuse the existing shell of the buffer separation tank and to incorporate vaned separation internals with minimal investment.

In the distillation unit of the sulfolane project, significant liquid mist entrainment occurs during vacuum evacuation; this not only results in low product yields and high material consumption, but the exhaust gas containing liquid mist also pollutes the production environment and the surrounding air, drawing attention from environmental protection agencies and local residents. In fact, aside from the sulfolane units, other oil refining units that use vacuum distillation, as well as fragrance production units, pharmaceutical manufacturing units, and other facilities for producing fine chemicals, all suffer to varying degrees from the aforementioned problems.

This post was last edited by luoli519 on 2023-9-26 at 12:41. Additionally, the following professional discussion threads posted by NOVEL on the Hachuan Chemicals Forum are listed here for everyone to use as links to join the discussions: 17. Regarding the application of feather leaf separators in hydrogen fluoride production facilities, please visit http://bbs.hcbbs.com/thread-1601354-1-1.html to participate in the discussion.

37. Regarding the application of the C4 hydrocarbons/water coalescing separator in the MMA methyl methacrylate project, please visit http://bbs.hcbbs.com/thread-1617142-1-1.html to participate in the discussion. To be continued......

Two simple methods: 1) Add a wire mesh foam filler at the exhaust port； 2) A small pump and a jet scrubber can be added to wash the exhaust gas.

This post was last edited by luoli519 on 2022-11-30 at 20:51. 1) The wire mesh foam catcher uses the pores formed by the interconnection of individual wires to carry out interception and separation; since the size of these pores follows a Gaussian distribution, the foam removal process is of a qualitative nature rather than quantitative, and the degree of separation achieved does not meet the requirements for discharging the air flow. Furthermore, screen foam catchers have poor suitability for different airflow speeds, limited operational flexibility, are prone to clogging by gels and particles in the airflow, are susceptible to corrosion and wire breakage, and require regular or irregular shutdowns to replace their internal screens. Many companies have only heard of the traditional screen foam removal method; due to a lack of knowledge about foam and mist removal technologies, they are information-deficient. Yet they are well aware of the serious shortcomings of screen foam removal, but have no alternative. Regarding the feather-leaf separation technology, which replaces traditional defoaming techniques, you can visit http://bbs.hcbbs.com/thread-1354814-1-1.html directly, or search on the forum for information on this technology as well as the advantages of screen defoaming. 2) The method of using a pump for jet washing is even less appropriate than method 1). Manufacturing enterprises need to capture and recover high-value products such as cyclobutenesulfone from the exhaust gases. Regarding the pump-jet washing method, even without considering whether the jet velocity meets the requirements of the demister, just looking at issues such as whether the mixed washing liquid causes the decomposition of cyclosulphone, whether it leads to higher purification costs later on, and whether the mist from the newly introduced washing liquid can cause secondary pollution through emission, it is clear that this approach is arbitrary and reflects a poor understanding of the technology involved in cyclosulphone processing plants.

Yes, I’m not familiar with the cyclobutenesulfone technology, but I do have some knowledge of vacuuming and the subsequent collection systems. 2) A venturi scrubber combined with a collection tank system can achieve droplet capture at the um level ； Circulating liquid; cyclobutenesulfone can be used ； Is the working fluid for liquid ring pumps butadiene sulfone? Load the exhaust port of the vacuum system, not the inlet. The inlet can only increase the volume of the pre-separator ； At the same time, conduct leak detection on the previous system to reduce the leakage of non-condensable gases!

This device is a 3N-class high-vacuum system, and it is difficult for liquid ring vacuum pumps to achieve the required vacuum level. An efficient demisting and defoaming separator must be installed at the inlet of the vacuum system, in order to protect the core equipment, namely the high-vacuum pump, as well as to enable the clean recovery of materials with high added value.

High-efficiency demisting and defoaming separator: What is the pressure drop of this device? What is the pressure in a high vacuum? If the pressure drop of the efficient demister is relatively high, it cannot be placed on the high-vacuum side!

This post was last edited by luoli519 on 2022-11-30 at 20:52: Pressure drop under operating conditions of the feather leaf separator