Recent content by knapee

Dear Latexman Thank your professional help to remind me that non-condensable gas will be cost a lot of heat transfer area. But, only the molar fraction of the non-condensable, such as 0.98~1 could increase the heat transfer area a lot. Is that possible that the molar fraction of the...

Dear sheiko Information required from the Process Engineer to be provided in the flow data, includes the minimum, normal and maximum flows, pressures, temperatures and alarm set points. The positive displacement flow meters now are the best flow meters currently available for fluid flow...

Dear Sir/Madam I wonder that the area of total condenser(TC) should be greater than partial condenser(PC) or not. I got a weird htri result: the area of TC I got is less than the area of PC. (Pls see the process drawing is attached in the post) The air/solvent is purged and dosed in the...

Dear Sir Usually, there is three TT location around the centrifugal compressor. One is Located in the inlet line of compressor suction drum, the other is located in the compressor discharge line, and the last is located in the after-cooler of the compressor discharge line. If the compressor...

Dear eng-tips members: The toluene 1000kg/hr + Air (O2~10%,N2~90%) 909kg/hr dosing and purge to the reactor to make an exothermic reaction. (Process drawing is attached in)The toluene will be flush up to the top 2 inclined condenser to recover the Toluene back to the reactor(vol=2kL). I have...

In the design of acrylic acid total condenser (horizontal) for the epoxy acrylate reactor, Acrylic acid (10%) and air (80%) in the tube side was cooled from 80 C @0.5 kg/cm2g to 50 C@ 0.2 kg/cm2g by using cooling water (shell side inlet = 30C@ 3kg/cm2g, and outlet = 40C @ 2.3kg/cm2g). Cooling...

Please check this is fall film condenser or not. The tube side inlet have mix vapor of Cyclohexane, toluene, and water. Cyclohexan, toluene, water, and nitrogen gas interacting each other and behave like no-ideal case to make thermodynamics calculation difficult. HTRI may be used for in this...

Dear Sir/Madam Could anyone kindly help me which vertical leaf filter vendor provide GA drawing and pressure drop calculation formula in their Company website ? This vertical leaf filter will be used in the pump suction side for the oligomer production plant. Usually this type filter pressure...

Dear Sir/Madam Could any pro kindly explain to me the rigorous Hysys method to calculate the latent heat of vaporization of mixture posted on the following webiste. http://webwormcpt.blogspot.com/2008/06/determine-latent-heat-and-maximum.html The confusing step is following adapted from that...

I notice I have to input the reboiler type, either thermosiphon reboiler, or force reboiler.( In this case, it is thermosiphon type). Also, the required liquid static head, and inlet pressure location (either at inlet nozzle or at column bottom) have to be inputted. But, I don't quite know how...

Dear Sir/Madam I have a project given poor S&T thermosiphon & VLE data and to be required to find optimum size exchanger through HTRI. The TEMA type : NEM ( vertical), shell per unit : 1, in series : 1 Tube dimension: OD 19.05 mm, length:3048 mm, pitch: 23.81, flow angle:30 degree The Shell...

Matlab may fit your requirement, and you may check the google to find a lot of matlab book applied in heat transfer area.

Dear Sir Someone suggest me that I should change the tube layout angle from 30 degree to 60 degree to make the vibration warning disappear. And, indeed it really happened. But, I just don’t get it why the rotated triangular (60) and triangular(30) will make so much different, and it seems that...

Dear Sir There is much more risk for this anti-surge problem in multistage compressor than that in single stage compressor. Therefore, it is difficult to control only one recycle (or bypass) line with one anti-surge valve (from compressor discharge back to compressor inlet) for this anti-surge...

Dear Sir I have to correct my last post again, and very sorry for this kind careless. The shell outlet P should be 0.1 barg instead of 3barg. The shell inlet/oulet nozzle is 400mm class 150 WNRF, tube inlet / outlet nozzle is 100mm class 150 WNRF. The tube layout (please see attachment) The...