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Hello for all Please one of the test of asphalt is ( Retained penetration after thin film oven test, % min. 52 ). Please what does it mean? Thanks for All

Hello for all Please what is the suitable process software to do a simulation of chlor alkali process, membrane technology. Thank you in progress

Hello for All Please I would like to know, in general, how many actual trays should I used, instead of packing, in crude vacuum distillation tower for topped crude to produce LVGO, HVGO and Slop wax. Thank You in progress.

Hello for all Please I want to select the suitable types of packing that used in crude vacuum distillation, I need your help. Thanks in progress

Hello for ALL When i do a simulation of a distillation column, how can I use the cold feed stream as a coolant to OVHD condenser within the same file in Aspen Hysys or I can not ? Thank you in progress..

Hello for every one .. When I need to do simulation of crude distillation unit by aspen hysys or aspen plus or any other simulator, which data i should use in the assay of the crude oil : the true boiling point data or simulated distilation data. Thanks for All....

Hello for all I have 10 km length nat. gas pipeline. My question : Is it important to put PRV on it. and how can I know where it is will be and, is one PRV is enough or not. Thaaaanks