The problem with land app is that our current source will be gone in the next 90-120 days and other sources are significantly more costly. We have spoken with a supplier who believes that his ozone system could be economical (somewhere in the range of $0.03-.05 per gallon); is this a red...
Good afternoon. We have a simple waste sludge processing plant where we are taking waste sludges primarily from DAF units at poultry and food processing plants (70-80% water, remaining various solids). We have been testing different means of incorporating trap grease into our repertoire and...
Good afternoon. I am part of a biofuel company that uses poultry, DAF and rendered waste streams as a feedstock. We are in the process of streamlining our process and making something that runs efficiently off of multiple types of streams. Our challenge at the moment is that we lack the full...
We have the book - which is definitely useful - and the 'North American Rendering' looks as though it will be very useful as well; thank you. The most significant point now is that we need help on a case by case basis; ideally the type of help that would be able to reflect on the sludge as it...
Good afternoon. I am part of a biofuel company that uses rendered waste streams as a feedstock. We are in the process of streamlining our process and making something that runs efficiently off of multiple types of streams. Our challenge at the moment is that we lack the full knowledge and...
MJC: We spoke with several spiral exchanger manufacturers and all of them declined the opportunity to quote based on the extreme pressure and temperature. Part of the concern was that in order to make it withstand the pressure, the pins and sheets would have to be very narrow. In the event of...
TJ: Yes, that is correct. The heat transfer fluid is being employed to take heat from the coil inside of tank B and then put that heat into the coil in tank A.
ione: The concept we are focused on - and described originally - is a single helical coil immersed in an agitated, recirculating heat transfer fluid.
TJ: It was explained to us that because of the large surface area required by a double pipe HEX the number of elbows and tight passages amounts...
ione: Are you familiar with any research studies on stratification of heat throughout a tank (or, conversely, the uniformity of heat throughout a tank)? We have done lab tests - and are doing more - but we are trying to pay close attention to the challenges deriving from scale.
gruntguru: The...
moltenmetal: Yes, the purpose of the heat exchange is for energy conservation and yes, it is worth it. Part of the reason for the coil in the vessel is that the vessel could be rated lower (approx. 150psig @ 700F with lower operating conditions) as the heat transfer fluid does not require the...
A concept for the room:
We are working with a continuous flow process that, for efficiency purposes, requires very significant (delta T ~350F) heat exchange between two high pressure (1600-1700psig) streams. Each stream is a viscous fluid (85cP cold, ~60cP hot), is in a state of laminar flow...
