Feb 20, 2003 · [0021] We have discovered a simple, reliable, inexpensive, and efficient anaerobic digester for treating organic wastes at a shortened residence time. The anaerobic digester is a multi-chambered digester that can handle wastewater and sludge in large volumes at a high flow rates, using a plug-flow system. actors for di erent purposes, we will focus on three basic types: The batch reactor, the continuous stirred-tank reactor, and the plug-ow reactor. 1 Chemical reactions 1.1 Rate of reaction and dependence on temperature We will once again look at the formation of ammonia (NH 3) from nitrogen and hydrogen

Our proposed design consists of a tubular plug-flow reactor with separate input streams for each of the reactants. The PFR was chosen due to the reduced equipment cost in comparison to a Continuously-Stirred Tank Reactor (CSTR) for a similar conversion and product flow rate. A plug flow reactor (PFR) is a pipe. Reactants are fed in one end of the pipe and some mixture of reactants and products emerge from the far end. The concentration of species and the temperature inside the PFR can vary with time (t), axial position (z), radial position (r), and angular position ( ).