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Hi People Any rules of thumb for channeling velocities in packed columns? Thanks remove.marius@mailbox.co.za

Hi there colleagues Does anyone have a short process description for H2O2? I also need to know what types of catalysts are used and so on to check the feasibility of making the stuff here in the Republic of SA. Thanks and regards Marius remove.marius@mailbox.co.za

Hi What is the standard velocity for steam in pipelines? remove.marius@mailbox.co.za

Hi guys I'm looking for a formula to estimate polytropic efficiency to adiabatic efficiency. remove.marius_che@yahoo.com

Hi We have a Copeland fluidized bed reactor where we burn lignin to reclaim sodium carbonate. Chlorides (apparently) play a role in increasing the particle size of the Na2CO3 pellets. Does anyone know why? remove.marius_che@yahoo.com

Hi there guys and girls I want to lay my hands on a formula that calculates pipe flow pressure drop for slurries. I have done a search on thi site, did not find what I was looking for, searched the NET and so on. I did find a Hungarian rersearcher's download document where he was trying to be...

Ladies and Gentlemen I have searched fruitlessly for days to find a suitable drawing program. I want to draw mech. flow diags and process flow diags. has anyone got a copy of freeware ar can you recommend anything please. Best Marius remove.marius_che@yahoo.com

Hi I would like to know how much it would cost to erect a water evap plant ($/tpd) - rough estimate. An approximate process description would be helpful. Thanks M remove.marius_che@yahoo.com

Hi there I honestly do not know which is the right forum to post on; so here goes... Where can I get info on how ore is worked up to get the the diamonds out? Google does not give me what i want. I have tried grease, heavy dense media separation and so on. Can anyone pleas help me... Thanks...

Friends I want to calculate the pressure drop of a fluid that flows out through a slotted opening. The slot is exactly 10 feet wide and 0.637 inches high. The flow is 5107 USGPM and the pressure (total head) is 9.427 PSIG. If I now reduce the slot opening to 0.433 inches, what would the...

Hi everyone Could you please help me? I need the heat capacity of CaCO3 in a band between 20°C and 150°C (65°F and 300°F). And, by the way, Google search = 16,200 results; I've probably looked at over 300 without success. Thank you in advance Marius remove.marius_che@yahoo.com

Here is a quick and dirty to size a restriction orifice: Q = flow in m3/hr SG = SG dimensionless C = constant = 195,78 Cd = discharge coefficient = 0,61 (See Crane) dimensionless dP = diff. pressure in kPa A = orifice area in mm2 d = orifice diameter in mm Calculation calculates A: A =...

Hi. Can anyone please help me with the design formulae for gas orifices (dP). Mine was unfortunately stolen. Thank you Marius

Hello everyone. A friend of mine has started out on a new plant and the engineering systems there are non-existent. The mass balances are incomplete, there are no P&ID drawings for some of the sections and there are also no data sheets for the majority of the equipment. What would your...