Hello. I do have a ChemE background but it has been 20+ years since I have been exposed to process engineering. I have a question. If we have a tank of ethanol (approximately 70F indoors) and we pull vacuum on it using a liquid ring pump (water as the liquid), would any significant amount of...
Hi, I am trying to find out if there is such a thing as a published vapor pressure for polyethylene glycol 400 at a elevated temperature. SDS's I have found show the vapor pressure is < 0.01 mm Hg psi at 20C. My application is using PEG400 at about 300 F. The problem is that a state regulator...
Well, I may have a ChemE degree, but I can't for the life of me remember most of the gas phase equillibrium details that I probably once was tested on. I am working with a process that will consist essentially of a stream of air saturated with methanol and water vapor that will be routed to a...
Most airports are required by the FAA to have emergency generators operating during periods of low visibility in the event that utility power would be lost so that runway lighting will not go down. The new engine rules (NESHAP ZZZZ) specify that "emergency" generators can comply with the rules...
I find that there are a lot of "environmental" forums on the internet, but they mostly relate to Civil topics and not enough towards Air Pollution/Control/Air Permitting.
Air Permitting is a difficult topic to keep on top of with the speed with which US EPA changes rules. I hope that this...
Hi:
I know I probably will not provide enough informaiton to get what I need, but here goes...I need to estimate how much rust is sandblasted off of a large piece of steel which I beleive to be some type of mild carbon steel with a coating of surface rust. Are there any methods out there on...
I am working with some EPCRA reporting and have some questions. For one, if a powerplant uses coal as fuel (and stores more than 10,000# onsite) is that reportable under EPCRA (sec 311)? I found an MSDS that states it is not hazardous for EPCRA, but other sources I run across say it is...
Would anyone have a recomendation for the type or perhaps even a brand of flowmeter to install in a particular applicaiton? The pipe is 20" and 30" steel pipe pumping water at a rate of 2000-5000 GPM. The site happens to be fairly remote. Power is available, but no buildings. I am a little...
I am writing a permit for a company and they have wood chip storage piles sitting outside. The wood is fairly wet, 40% moisture or so. Does anyone know of a good source of information to determine the fugitive particulate emissions from wind erosion acting on the piles? The only part of AP-42...
What happens to the head that a pump experiences when there are two or more outlets at different elevations?
My situation is this...I have several high volume pumps (Pumps A) pumping water through steel pipe (20" and 30"). I know all the lengths of pipe and even some rough estimates of...
I have an interesting problem here:
I am working dewatering pumps. There are three 9 stage pumps pumping water into a 30" pipe. This 30" pipe goes about 6000 ft, then has a 12" line tapped into it, which splits again into a 5" and 1.5" pipe. The remainder of this water continues up the 30"...
I have a bunch of kW data (hour by hour)used by some pumps that are used for pumping water from one area to another. They are rather high volume pumps...around 3000 gpm each. What I want to do is take all the kW data and use that to estimate a flow rate for each pump during each hour to get a...
I have a bunch of kW data (hour by hour)used by some pumps that are used for pumping water from one area to another. They are rather high volume pumps...around 3000 gpm each. What I want to do is take all the kW data and use that to estimate a flow rate for each pump during each hour to get a...
Has anyone ever heard of a reaction that uses Acetic acid, or Sodium Acetate using Sondium Hydroxide to produce Methane gas? I am talking on a production scale, not lab scale.
I am looking for anyone with some coal gassification background or knowhow. I am trying to understand how it is very viable. It appears to me that only about half of the resultant gas is combustable (H2 and CH4) and the rest being CO and CO2 + N2. How does this even burn in the gas turbines...
Does anyone know what an amine number tells you? I think it is used to determine an average molecular weight of a polymer, but am not familiar with the method. If anyone is familar with this, please tell me how to determine an amine number and how it can determine the molecular weight.
We have a process where we inject about 1600# of liquid CO2 into a reaction in a 2000 gal reactor. The way it is set up right now is we have a circulating line running from teh bottom of the reactor to the top and there is an injection tube in the line where we inject CO2. The injection tube...
Does H2O2 really work very well as a disinfectant in DI water systems without a UV light source or some catalyst. I have read that it isn't a good disinfectant. We currently put about 0.05% H2O2 in our DI water system to keep it free of bacteria.
We use quite a lot of 1-Hexadecene. The material is about 94% 1-Hexadecene and 6% with the double bond in a position other than the alpha position. Does anyone know of an analytical test to determine the percent Hexadecene with the double bond in the alpha position?
