What are the characteristics of the response curve of batch stirred tank reactor?

Reactor response curve.

Normal is the same.

1. Batch reactor is also known as batch reactor.

Flexible operation, easy to adapt to different operating conditions and product varieties, suitable for small batch, multi-variety, long reaction time product production. The disadvantage of the batch kettle is that it requires auxiliary operations such as loading and unloading, and the product quality is not easy to stabilize. However, some reaction processes, such as fermentation reaction, polymerization reaction, etc., are still difficult to achieve continuous production.

Until now, batch cauldrons have been used.

The batch operation reactor is to add raw materials to the reactor in a certain proportion, and after the reaction reaches certain requirements, the raw materials are discharged at one time. Continuous operation reactors include the continuous addition of raw materials and the continuous discharge of reaction products. When the operation reaches a steady state, state parameters such as material composition and temperature do not change over time at any point in the reactor.

Semi-continuous operation reactors, also known as semi-batch operation reactors, fall somewhere in between, typically by adding one reactant at a time and then another in succession. When the reaction reaches a certain requirement, the operation is stopped and the material is discharged.

The advantage of batch reactor is that the equipment is simple, and the same equipment can produce a variety of products, especially suitable for small batch and multi-variety production in pharmaceutical, dye and other industrial sectors. In addition, there is no material reflux in the batch reactor, which facilitates most reactions. Its disadvantage is that it requires auxiliary procedures such as loading and unloading materials, cleaning, etc., and the product quality is not easy to stabilize.

2. Continuous reactor, or continuous reactor.

The disadvantages of batch reactors can be avoided, but the stirring action can cause a backflow of fluid in the reactor. In the case of strong stirring, low liquid viscosity or long average residence time, the flow form of the material in the reactor can be regarded as a complete mixed flow, so the reaction reactor is called a complete mixed reactor. In cases where high conversion rates or tandem side reactions are required, backmixing in the reactor is a disadvantage.

At this point, multiple reactors can be used in series to reduce the adverse effects of backmixing, which can be controlled by separate reactors.

Whenever possible, a continuous reactor should be used for mass production. The continuous reactor has the advantages of stable quality and convenient operation and control. The disadvantage is that there are different degrees of backmixing in the continuous reactor, which is an unfavorable factor for most reactions, and should be limited by the reasonable selection and structural design of the reactor.

3. Semi-continuous kettle reactor.

Refers to a reactor in which one raw material is added at a time, and then another raw material is added continuously. The reactor is somewhere between a batch reactor and a continuous reactor.

The disadvantages of batch kettles can be avoided, but the stirring effect will cause backmixing of the fluid in the kettle. In the case of vigorous stirring, low liquid viscosity or long average residence time, the flow pattern of the material in the kettle can be regarded as full mixed flow, and the reactor is accordingly called full mixed kettle. In situations where high conversion rate is required or there are tandem side reactions, the backmixing phenomenon in the kettle reactor is a disadvantageous factor.

At this time, a multi-kettle tandem reactor can be used to reduce the adverse effects of backmixing, and the reaction conditions can be controlled in separate reactors.

The intermittent operation reactor is to add the raw materials to the reactor at one time according to a certain ratio, and after the reaction reaches a certain requirement, the materials will be discharged in one cavity. The continuous operation reactor is the continuous addition of raw materials and the continuous discharge of reaction products. When the operation reaches a steady state, the state parameters such as the composition and temperature of the material at any position in the reactor do not change with time.

A semi-continuous operating reactor, also known as a semi-batch operating reactor, is somewhere in between and typically involves the addition of one reactant at once and then another in succession. After the reaction reaches a certain requirement, the operation is stopped and the material is discharged.

Dear, hello, I am glad to answer for you: batch kettle reactor is a kind of reactor widely used in the chemical industry, and its main features and disadvantages such as silver dispersion: Features:

1.The structure of the reactor is simple, easy to operate and maintain. 2.

Because it is an intermittent reaction, the anti-striker responder can be used for a number of different reaction conditions, including different temperatures, pressures, and reaction times. 3.Both reactants and products of the reactor can be mixed and separated within the reactor, improving reaction efficiency and product purity.

4.It can carry out higher reaction pressures and temperatures, and is suitable for some high-temperature and high-pressure reactions. Cons:

1.The reactor has a long reaction cycle, and the reaction time and output are limited. 2.

Because it is a batch reaction, the continuous production capacity of the reactor is poor, and it is not suitable for large-scale production. 3.The energy consumption of the reactor is high and a large amount of energy is required to maintain the reaction temperature and pressure.

4.The operation of the reactor is dangerous and requires strict safety measures to ensure the safety of the operator. 5.

Reactors are expensive to build and require a large investment to build and maintain. Therefore, the batch kettle starvation reactor still has a certain application value in the chemical industry, but it is necessary to select the appropriate reactor type according to the specific situation.

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Cons: 1The production efficiency is low because multiple steps such as reaction, cooling, and cleaning are required.

2.The cost of the equipment is high because of the need for high-strength, corrosion-resistant materials. 3.

Maintenance is difficult because the equipment needs to be regularly serviced and cleaned. 4.The degree of mixing of the reaction material is not uniform, which may affect the effect of the reaction.

Features and disadvantages of batch kettle reactors in <>.

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The batch shouting kettle reactor is a common type of reactor, and its characteristics and infiltration and disadvantages are as follows<>

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Features: Sou Jing 1It is suitable for small batch production and can perform a variety of reactions.

2.It can be detached for precise control of the reaction process, such as temperature, pressure, stirring speed, etc. 3.

It can carry out special reactions such as high temperature, high world imperial pressure, strong acid, strong alkali and so on. 4.The closed structure can avoid the leakage of reactants and environmental pollution.

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Cons: 1The production efficiency is low because of the need for multiple steps such as reaction, skin cooling, and cleaning.

2.The cost of the equipment is high because of the need for high-strength, corrosion-resistant materials. 3.

Maintenance is difficult because the equipment needs to be regularly serviced and cleaned. 4.The degree of mixing of reactive or resistant materials is uneven, which may affect the effect of the reaction.

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In short, the inter-Huai Liang batch reactor lead carrier is suitable for small batches and high requirements for hail reaction production, but the shortcomings <>such as low production efficiency, high equipment cost, and difficult maintenance also need to be considered

1. Stainless steel reactor.

The stainless steel reactor is composed of a kettle body, a kettle cover, a jacket, a stirrer, a transmission device, a shaft sealing device, and a support. The materials generally include carbon-manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel) alloys and other composite materials; According to the manufacturing structure of the reactor, it can be divided into three categories: open flat lid reactor, open butt welding flange reactor and closed reactor.

The stirring form of stainless steel reactor is generally anchor type, paddle type, turbine type, propulsion type or frame type, etc., and the stirring device can be used with multi-layer stirring paddles when the height and diameter are relatively large, and it can also be arbitrarily selected according to the requirements of users.

The different sealing types of stainless steel reactors can be divided into: packing seals, mechanical seals and magnetic seals. The heating methods include electric heating, hot water heating, heat conduction oil circulation heating, external (internal) coil heating, etc., and the cooling methods are jacket cooling and coil cooling in the kettle.

Stainless steel reactors are widely used in petroleum, chemical, rubber, pesticides, dyes, medicine, food, and pressure vessels used to complete vulcanization, hydrogenation, alkylation, polymerization, condensation and other processes, such as reactors, reaction kettles, decomposition pots, polymerization kettles, etc.

2. Magnetic stirring reactor.

Static seal structure, magnetic coupling connection between stirrer and motor transmission, due to its non-contact transmission torque, static seal instead of dynamic seal, can completely solve the leakage problem that can not be solved by mechanical seal and packing seal before, so that the stirring parts of the whole medium are completely in the state of absolute sealing to work, therefore, it is more suitable for a variety of flammable and explosive, highly toxic, precious media and other chemical media with strong penetration force for reaction, is petroleum, chemical, organic synthesis, polymer material polymerization, The most ideal non-leakage reaction equipment for vulcanization, fluorination, hydrogenation, oxidation and other reactions in food and other processes.

3. Electrically heated reactor.

The electric heating reactor has the characteristics of rapid heating, high temperature resistance, corrosion resistance, no environmental pollution, etc., and is widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, food and other industries, and is also used to complete vulcanization, nitrification, hydrogenation, alkylation, condensation, polymerization and other processes. The materials of the electric heating reactor generally include carbon-manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys and other composite materials; According to the manufacturing structure of the reactor, it can be divided into three categories: open flat lid reactor, open butt welding flange reactor and closed reactor, each structure has its scope of application and advantages and disadvantages.

According to the manufacturing structure of the reactor, it can be divided into three categories: open flat lid reactor, open butt welding flange reactor and closed reactor, each structure has its scope of application and advantages and disadvantages.

According to the different sealing types of the reactor, it can be divided into: packing seal, mechanical seal and magnetic seal.

The reactor is composed of a kettle body, a kettle cover, a jacket, an agitator, a transmission device, a shaft sealing device, and a support. The stirring form is generally anchor type, paddle type, turbine type, pusher type or frame type, etc., and the stirring device can be used with multi-layer stirring paddle when the height and diameter are relatively large, and it can also be arbitrarily selected according to the user's requirements. And set a jacket outside the kettle wall, or set a heat exchange surface in the vessel, and also through the external circulation for heat exchange.

The heating methods include electric heating, hot water heating, heat conduction oil circulation heating, far-infrared heating, external (internal) coil heating, etc., and the cooling methods are jacket cooling and coil cooling in the kettle, stirring paddles, etc. The support seat has a support type or a ear type support. Gear reducer should be used for speeds of more than 160 rpm.

The number of holes, specifications or other requirements can be designed and made according to user requirements.

Stirred reactors are used in petrochemical production for material mixing, dissolution, heat transfer, preparation of suspensions, polymerization reactions, preparation of catalysts, etc.

In the petroleum industry, the mixing adjustment and refinement of dissimilar **, gasoline is mixed with additives such as tetraethyl lead, so that the raw material liquid or product is homogenized. In chemical production, the manufacturing of styrene, ethylene, high-pressure polyethylene, polypropylene, synthetic rubber, aniline Shenling slow fuel and paint pigments and other processes are equipped with various types of mixing equipmentBecause a large number of catalysts and additives are used in the petroleum industry, the demand for mixing equipment is relatively large.

Due to the complexity and diversity of material operating conditions, the requirements for mixing equipment are also relatively complexFor example, the silicon aluminum of the refinery Changchun University of Science and Technology undergraduate graduation design reactor, large slurry Wangbi tank, barium reaction kettle, sulfur phosphating reaction kettle, alkylation reaction kettle, clay mixing tank, etc. are all stirring equipment equipped with various types of agitators.