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Dear Professional members: I have a question about the shear-thinning fluid transfer by gravity. This fluid is with viscosity around 26,000 cp at room temperature, but the viscosity decrease to around 2600 at 50C. Is it possible to use the tote as discharge tank to transfer this by gravity...

Dear Professional members : The dichloromethane, DCM ( CH2Cl2, Methylene chloride) solvent is widely used in the resin plant, since t has high water solubility than other organic solvent, and low boiling point ( b.p is 39.95C at atm). My research is finding a good molecular sieve or active...

Dear eng-tips professional members : There is the 200kg/hr organic solvent Dichloromethane(DCM), 10kg/hr HCl (90%),40kg/hr Isopropyl chloride(IPC) feeding to the 5m3 Vessel to be produced resin (Operating at 3kg/cm2g and 25C), and 5 kg/hr Nitrogen gas purged at 3kg/cm2g in get rid of water...

Dear eng-tips members : Could you please shine me a light how to calculate the heat of vaporization of the Solved-born acrylic resin ? Is it correct to make all the acrylic monomer and solvent ingredient feed into the flash drum in the aspen plus or other simulation tools, and calculated the...

I have some query about aqueous polyurethane production. It is usually made through three stages, the pre-dispersion, dispersion, and post dispersion, and the phase inversion process is crucial for producingaqueous polymer dispersion with little or no external surfactants added. This...

Dear Master Professional members : I tried to figure out how to use the Aspen plus to find out a simple homework question that is the solubility of PVA(polyvinyl alcohol) in water for several months, but waste a lot of time and no gain. Could any master please help me to figure out that is any...

Dear Sir Excuse me, could anyone please tell me how to where I can find the polymer thermal datebook, such as the solution enthalpy of 1~89% of PVA(polyvinyl alcohol) in water ? Thank you so much.

Dear Master Could any professional tell me where I could find the boiling point elevation data, enthalpy, solubility data for the Polyvinyl alcohol polymer water solution since I tried to design one stage evaporator for this PVA recovery ? Please give me any help and suggestion. I really...

Dear Master Could you please tell me how to transform the following attached pdf x-y graph data to the excel ? Since I saw someone do this trick and made a Multiple regression equation so that we can plug a variable to get the answer we want. Thank you very much for your suggestion and...

Dear member Could anyone kindly explain to me why the const torque motor is cheaper than const power ? Since the graph attached show that for const torque or const power all fit that formula P*Q=const (P is pressure, Q is pumping rate). Thank you...

Dear Master members : I couldn't find out the infrared pyrometer to be installed on the bottom or top of the polyester reactor. In the past, there may be generated a lot of viscous vapor or liquid contaminated the RTD on the waterborne resins reactor, and make the cause of the temperature...

Dear professional master members: There are four horizontal pumps located above the cooling water sump in our plants,and the cooling water be sucked out from the sump through the vacuum vessel. I also attached the pump performance curve from the vendor for your reference. Since this the VFD...

Dear eng-tips members : Please kindly help me out in this confusing power calculation equation. There is some different shape of anchor impellers. Someone may design the anchor impeller D/T ratio range from 0.7~0.85, and the shape may be different from the usual anchor type. For example, the...

Dear Masters : Could you please kindly help me any hint how to get the relationship between the stirring current and viscosity, by experiment or simulation ? For example, in the PET production process, the stirring speed, temperature, liquid level, viscosity, flow resistance, heat transfer...

Dear professional chemical engineer members: Could you please suggest me about the polymerization reactor scale up tech through collecting data from the lab DSC exothermic graph and feeding rate to make correlated to the batch conversation profile in the production scale ? Thank you very much...

Dear Professional members: I have to bother yours a silly agitation question for me to survive in the career. My boss asked me to design a modified pitched-blade type impeller (design for 60~90 rpm high speed revolution speed? and created mostly in axial flow) on the center sweep shaft...

Dear Sir/Madam : Can you please suggest that it is suitable or not for our prepolycondensation resin reactor installed the anchor(bottom) + 2 layer of disk-turbine impellers ? The prepolycondensation resin reactor is operated at the vacuum condition from 2000mmH2O to 1 torr around 270C to...

ear Sir : I have two same size tank witch two kind of fluid's viscosity, one is 300cps, and the other is 30000cps. I wonder why this two agitator(pitch paddle)'s power is constant with other condition is the same except the fluid viscosity. In other words, it is unrelated with fluid...

Dear Mixing expert : I wonder that any student can register the http://fmp.bhrgroup.com/forum/aff/12.aspx for free. Thanks.

I would like to bother you guys a vacuum pump question. A liquid ring vacuum pump in which the delivery of the methanol gas was sucked is achieved by a circulating methanol liquid. This liquid ring vacuum pump with methanol liquid as operating liquid can reach the suction side pressure around...