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Thank you guys,

My co-workers mentioned this vapor lock twice and I've never heard of it. The first time was when condensate water from reactor jacket could not flow through plate & frame heat exchanger. Second time was we were pumping liquid propane into a reactor (temp = 125F) using positive dispalcement...

ACtrafficengr, For example, column B may contain reactor numbers 1 thru' 20 while column C may contain ingredients A to Z snd column D may contain percentage yields. I need to be able to pick a reactor from column B then know how many times it was used for ingredient 'A' and what the yields...

I have a spreadsheet that has about 20 columns and 500 rows. I need to count how many times a reactor number appears in a particular column and what type of raw materials and temperature (shown on different columns)were used. Atimes, we may use a reactor for different runs by varying the...

Thank you bchoate for your brief response. Our beads size distribution from our batch process range from 200 to 800 microns. These polystyrene beads will later be injected with pentane in another batch process and the final product will be use in making of foam cups and foam blocks for house...

In batch process of styrene polymerization,I know that in terms of mass ratio of other ingredients to styrene, Potassium per sulphate (KSO4) has the smallest ratio. Does anyone has data on how KSO4 do affect beads size distribution during polymerizartion?

Does anyone know whether physical properties of styrene mononer (e.g. viscosity, surface tension) can affect crystal beads size distribution during polymerization. I do not think physical properties has any effect, but I may be wrong.

Aspearin1, thanks for the input. Loaner RO membranes (Hydronautics) were put into service while our regular RO membranes(Triseps) were cleaned. I am not sure whether the loaner ones were properly flushed before they put inservice. I know that it is not from our regular RO membranes 'cos the...

We have two resins (Cation and Anion) beds in our facility. The feed water (into the beds) from RO unit has pH of about 8.0, conductivity of 35.0 and 0.0 ppm of silica. Does anyone know why the final water out of these beds should read pH of about 4.5. In the past, pH used to be about 7.5...

We recently sent out our membrane filters (TRISEP-X20)for cleaning and the new vendor installed their loaner membrane filters (different brand)pending the arraival of ours. All of a sudden the pH of deionized water dropped to 4.5. This is creating lot of problems for our process. I was told...

Need to understand relationship among (1)Fan Static Pressure curve, (2) System curve (3) Power curve, (4) Fan input Power, (5) Volume Flow rate, CFM and (6) System Design pressure/vacuum. Thanks in advance, Dabit

rbcoulter, The feed to the cooling tower will be the reject water from Reverse Osmosis. Need your input. Thanks

I need some input in running of a water cooling tower that is using RO water as feed. The conductivity of water in the tower is about 7000, pH 9-10 and hardness of about 45. As of now, the tower efficiency is not that great and we're spending lot of money on cooling water treatment chemicals...

Thanks for your contribution JKEngineer, the reactor has a ring type jacket on the outside

I will be moving solid materials in a horizontal pipe using pull system(i.e. negative pressure). My options are (1) to have all my three vertical pipes drop into the horizontal pipe and pull the materials or (2) Have two vertical drop into one side of a 'Y' setup while the third vertical drops...

Thanks rbcoulter for the response. Part of the problem is that there is high tendency of plastic buildup on any object protuding out of the reactor wall. This buildup will interfer with functioning of the instrument. What do you think?

Does anyone know what I can use to detect the liquid level inside a closed reactor. There is about 4" dai. sight glass on top of the reactor. As a result of emmission problem, all the reactors need to be run as closed process. Stochiometric ratio of ingredients is very critical so expected...