Liquid carryover in the dry gas desulfurization tower of coking units
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Dear teachers: Our facility has a coking unit with an annual capacity of 400,000 tons. In the later stages of operation of this unit, a problem of liquid entrainment occurred in the dry gas desulfurization tower. Currently, ordinary floating valve trays are being used in this tower; some people have suggested that CTST trays could solve the problems of liquid entrainment and low processing capacity. If any of you have successful experience with such modifications, please share it with us. I would be very grateful. Wishing all of you a happy New Year.
The application of desulfurization for natural gas and associated gas from oil fields is already very effective; even at high amine concentrations, liquid flooding does not occur. We used two types of tray plates: one with radial side-guided injection and the other without backmixing, both of which are based on our own intellectual property, and these brought significant economic benefits to a factory in Changqing.
1. Take samples to check whether the lean liquid contains too much coke powder and whether the filter is functioning properly. 2. Determine if the system is operating under overload conditions. 3. Check whether the color of the lean liquid is normal and whether there is severe foaming. 4. Take samples of the acidic water and replace it
It is a system-related issue; how to reduce the foaming tendency of the amine solution is an important problem.
Switching to spatial mass transfer trays can indeed solve the problem; it is widely used in natural gas desulfurization as well as in the desulfurization of associated gas from oil fields. The concentration of the amine solution MDEA can reach 45%. Feel free to contact me.
It should be possible. The CTST high-efficiency three-dimensional trays are widely used here and yield excellent results; if the problem is caused by overloading, using these trays should help resolve the issue of liquid carryover
The improved CJST has enhanced anti-clogging and anti-foaming properties, as well as a better ability to reduce liquid carryover
Thank you, teacher upstairs. May I ask which refinery you work for? Where are CTST trays manufactured?
Tianjin Plait, Hebei University of Technology
What’s the price? Which refinery are you from? I am from Boxing Yongxin Chemical Co., Ltd. We plan to carry out maintenance work on the dry gas desulfurization tower of our coking unit in March, and we would like to know more about the details of this renovation. Thank you. Come visit Boying Yongxin when you have time.