Based on the scaling problem outer surface of steam generator tube in secondary circuit condition pressurized water reactor, molecular dynamic was used to calculate adsorption characteristics Fe3O4. The trajectory, mean squared displacement, radial distribution function and energy Fe3O4 agglomeration deposition process were further analyzed through variation temperature concentration. When betw...

(30 pts) 1. You have been requested to troubleshoot problems with a well stirred reactor in your Texas chemical production plant. After taking the red eye flight and a long taxi ride to your hotel and then the plant your arrive exhausted, but eager to solve this problem. Apparently the problem with this 165 L reactor is that the conversion of the reactant, Anychemical, is too low at XA = 0.53. ...

A continuous acid-catalyzed steam explosion pretreatment process and system to produce cellulosic ethanol was developed at the pilot-scale. The effects of the following parameters on the pretreatment efficiency of rice straw feedstocks were investigated: the acid concentration, the reaction temperature, the residence time, the feedstock size, the explosion pressure and the screw speed. The opti...

In 2018, nuclear energy generated 55% of United States’ and one third the world’s carbon free electricity, making a key tool in efforts to mitigate climate change before 2050. However, current technology, light water reactors (LWRs), is limited 300°C, so it cannot be used decarbonize industrial process heat which accounts for 12% US greenhouse gas emissions. High temperature (HTGRs) can meet hi...

Sludge removal is performed on two steam generators (SG’s) at the Krško Nuclear Power Plant (NEK) during every outage. SG’s are a meeting point of five major plant systems: Reactor Coolant System (RC) primary side and four systems secondary – Auxiliary Feedwater (AF), Blowdown (BD), Main (FW), Steam (MS). activities take place top tube sheet. It always consists classical Lancing (SL) which done...

In this study, an optimal trajectory planning based on artificial neural networks and genetic algorithms was proposed for control of nuclear research reactors. The trajectory being followed by the reactor power is composed of three parts. In order to calculate periods of all parts of the trajectory, a period generator was designed based on a feedforward neural network. Period values of the traj...

Steam reforming of ethanol in the membrane reactor using the Pd77Ag23 membrane was evaluated in Ni/CeO2 and Co/CeO2 at atmospheric pressure. At 673 K, the H2 yield in the Pd77Ag23 membrane reactor over Co/CeO2 was found to be higher than that over Ni/CeO2, although the H2 yield over Ni/CeO2 exceeded that over Co/CeO2 at 773 K. This difference was owing to their reaction mechanism. At 773 K, the...

Steam reforming of the crude glycerol by-product of a biodiesel production plant has been evaluated experimentally at atmospheric pressure, with and without in situ CO(2) sorption, in a continuous flow fixed-bed reactor between 400 degrees C and 700 degrees C. The process outputs were compared to those using pure glycerol. Thermodynamic equilibrium calculations were used to assess the effect on...

The steam reforming of hydrocarbon fuels is a promising method for the production of hydrogen for portable electrical power sources. A suitable reactor for this application, however, must be compatible with temperatures above 800 degrees C to avoid coking of the catalytic structures during the reforming process. Here, ceramic microreactors comprising high surface area, tailored macroporous SiC ...