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What is the effect of olefin concentration on naphtha hydrotreating process?
Hydrotreating reaction is an exothermic reaction. The total reaction provides excess reaction heat; more is produced by the exothermic hydrogenation reactions than are required to support the endothermic cracking reactions.High Olefin conc. leads to high temp. rise due to hydrogenation reaction.This excess heat increases the reactor temperature and accelerates the reaction rate. Temperature rise can be controlled by injecting cold hydrogen or cold recycled quench into the reactors to absorb excess reaction heat.
Why ceramic used for wall of a nuclear reactor?
ceramic can withstand high temperature
What is differential reactor?
A differential reactor is a type of chemical reactor designed to promote specific reactions under controlled conditions while allowing for continuous sampling and monitoring of reactants and products. It typically operates at steady-state conditions, where the concentration of reactants and products remains constant over time. This setup enables precise control over reaction kinetics and thermodynamics, making it valuable for research and development in chemical engineering and process optimization. Differential reactors are often used in studies of reaction mechanisms and for scaling up processes from laboratory to industrial scale.
What is semi batch reactors?
Semi batch reactor is the one in which one reactant is charged before the reaction and the other is continously added as the reaction proceed.
What is rotatory disc reactor?
A rotatory disc reactor is a type of chemical reactor that utilizes a rotating disc to enhance mixing and reaction rates. The rotating motion creates a thin film of reactants on the disc's surface, promoting efficient mass and heat transfer. This design is particularly effective for processes involving liquid-phase reactions, such as in the production of fine chemicals and pharmaceuticals. The continuous operation and improved contact between reactants can lead to higher yields and shorter reaction times compared to conventional reactors.
How do you control nuclear reactors inside a nuclear reactor?
Nuclear reactors are controlled using control rods that absorb neutrons and regulate the rate of fission in the reactor core. By adjusting the position of these control rods, operators can manage the nuclear reaction and control the power output of the reactor. Additionally, coolant flow and reactor temperature are also monitored and adjusted to ensure safe and stable operation.
How do you enhance rate of reaction in CSTR?
rate of a reaction can be increased by increasing the temperature if the reactor
How do you maintain the temperature of nitroglycerin reactor?
To maintain the temperature of a nitroglycerin reactor, you can control the flow rate of reactants, adjust heat exchange mechanisms, and monitor the reaction kinetics closely. It is also important to have safety measures in place to ensure that the temperature does not exceed critical levels.
How does the control rod affect the rate of reaction in the nuclear reactor?
A control rod is made of a neutron absorbing material. Boron is common. When the control rod is withdrawn (pulled out) of the reactor, the fission reaction rate increases. When that control rod is inserted, the reaction rate decreases. There are other factors that control the reaction rate, but the rods can be considered as the way to start up or shut down the reactor by pulling or inserting them.
What is an isothermal reactor?
An isothermal reactor is a type of chemical reactor where the temperature inside the reactor remains constant throughout the reaction. This is typically achieved by controlling the heat exchange inside the reactor. Maintaining isothermal conditions can help improve reaction selectivity and efficiency.
What is the role of control rods in a fission reaction?
Control rods are used to absorb neutrons in a nuclear reactor to regulate the rate of fission reactions. By adjusting the position of the control rods, operators can control the power level and ensure safe and stable operation of the reactor. If the reactor begins to overheat, control rods can be inserted further to slow down or stop the chain reaction.
How many control rods are there in a nuclear reactor?
The number of control rods in a nuclear reactor can vary depending on the design and size of the reactor. Typically, a nuclear reactor can have anywhere from 50 to 100 control rods. These rods are used to control the rate of the nuclear reaction by absorbing neutrons and regulating the power output of the reactor.
What control the chain reaction in a nuclear reactor?
The chain reaction in a nuclear reactor is controlled by inserting control rods made of materials like boron or cadmium into the reactor core. These control rods absorb neutrons and help regulate the rate of the chain reaction by adjusting the number of neutrons available for fission. Moving the control rods in or out of the core allows operators to control the power level and ultimately, the reaction itself.
If you wanted to slow down the chain reaction in a nuclear reactor would you remove or insert the control rods?
To slow down the chain reaction in a nuclear reactor, you would insert the control rods. Control rods absorb neutrons and reduce the number available to sustain the chain reaction, thus slowing down the rate of fission reactions occurring in the reactor core.
How do the control rods control the reaction?
Control rods are made of materials that absorb neutrons, such as boron or cadmium. By inserting them into the reactor core, they absorb neutrons, reducing the number available to sustain the chain reaction and slowing down the reaction rate. By adjusting the position of the control rods, operators can control the power output of the reactor.
The chain reaction in a nuclear reactor is controlled by inserting what?
Control rods, made of materials like boron or cadmium, are inserted into the reactor core to absorb excess neutrons and regulate the nuclear chain reaction. By adjusting the position of these control rods, operators can control the rate of fission reactions and manage the amount of heat and energy produced in the reactor.
What is the part of a nuclear reactor called where the nuclear reaction takes place?
The part of a nuclear reactor where the nuclear reaction takes place is called the reactor core. It typically contains the fuel rods, control rods, and coolant necessary for sustaining and controlling the nuclear reaction.
