Purification workshop workshop reaction equipment
Purification workshop pharmaceutical cleanroom reaction equipment
Reaction equipment is a device used for chemical reaction. The materials participating in the reaction can be gas phase, liquid phase or solid phase. When reactants of different phases undergo chemical reactions, the requirements for the reactor are different; Widely used in various transfer processes such as dissolution, dilution, batching, etc.
Text label: purification workshop, reaction equipment
Purification workshop pharmaceutical cleanroom reaction equipment
Reaction equipment is a device used for chemical reaction. The materials participating in the reaction can be gas phase, liquid phase or solid phase. When reactants of different phases undergo chemical reactions, the requirements for the reactor are different; It is widely used in various transfer processes or chemical reaction processes such as dissolution, dilution, batching, etc. In order to make the dispersed phase well dispersed in the continuous phase, maintain uniform suspension or flashiness, accelerate dissolution, and strengthen mass transfer and heat transfer between phases, etc. , The equipment is equipped with a stirring device and a heat transfer device; the reaction kettle is mainly composed of a stirring device, a tank body, a shaft seal, and a power device, which provides reaction space and reaction conditions for the materials; the stirring device is composed of a stirring shaft, a stirrer, and a transmission device. The stirring shaft transmits the power from the transmission device to the agitator, and the agitator makes the materials in the kettle evenly mixed and strengthens the heat and mass transfer process in the kettle.
The agitator is the key part of the stirred reactor. Its function is to provide the energy required for the process and the appropriate flow state. When the agitator rotates, the mechanical energy is transferred to the fluid, forming a high turbulent and sufficient mixing zone near the agitator , and generate a high-speed jet to push the liquid to circulate in the agitator container; the flow pattern of the agitator is closely related to the stirring effect and stirring power. The flow pattern in the stirring container depends on the form of the agitator, the stirring container and the inner The geometric characteristics of components, as well as fluid properties, agitator speed and other factors; commonly used agitators include frame type, paddle type, anchor type, turbine and various improved agitators, which are selected according to the medium, tank length and process conditions. , if possible, experiments should be done. The vented gas-liquid agitator is mainly composed of disc turbine and wing disc turbine agitator; paddle, propeller, turbine and anchor agitators are the most widely used in stirring reaction equipment. According to statistics It accounts for 75%-80% of the total number of agitators; the paddle agitator is simple in structure and easy to manufacture, but mainly produces liquid flow in the direction of rotation, and the axial flow range is small. It is mainly used for fluid circulation or high viscosity materials. Stirring; Turbine agitators are widely used agitators, with open type and disc type, which can effectively complete almost all stirring operations and can handle a wide range of viscosity. It is suitable for low to medium viscosity fluids. Mixing, liquid-liquid dispersion, solid-liquid suspension, as well as promoting heat transfer, mass transfer and chemical circulation; the screw agitator is evolved from a paddle agitator, its main feature is that the power consumption is small, single screw stirring The power consumption of the mixer is 1/2 of that of the anchor mixer, and it is mainly suitable for use at high viscosity and low speed. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification workshops and clean workshops.
For low-viscosity liquids, when the speed of the agitator is high, it is easy to produce tangential flow, which affects the stirring effect. Especially for the mixing or flashing of multiphase materials, due to the effect of centrifugal force, not only the mixing effect cannot be achieved, but The materials in the system will be separated or stratified. In addition, the violently rotating liquid combined with the vortex action will have an impact on the stirring shaft, thus affecting the service life of the agitator. The flow state of the fluid in the reactor.
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