System and method for researching amplification effect of continuous stirring kettle

Abstract

The invention discloses a system and a method for researching an amplification effect of a continuous stirring kettle. An apparatus of the system mainly comprises a liquid storage trough, a gas sending apparatus, a tracer agent apparatus, a stirring kettle, a high-temperature constant-temperature circulating apparatus, a cooling water circulating apparatus, a conductometer, a temperature acquisition system and a data acquisition system and the like; and the stirring kettle is provided with a gas distributor, a stirring paddle and a coil pipe. By changing the parameters such as the flow rate ofan inlet material, an appearance gas speed, the type of the stirring paddle, the stirring rotating speed, the size of the stirring kettle and the like, the influence on the retention time distribution of the continuous stirring kettle and the concurrent heat transferring coefficient on the outer side of the coil pipe is researched, so that the reference can be provided for the amplification and optimization design of the continuous stirring kettle.

Description

technical field [0001] The invention belongs to the field of chemical equipment, in particular to a system and method for studying the amplification effect of a continuous stirring tank. Background technique [0002] In the industrialization process of chemicals, from the laboratory scale to the industrial scale, it usually goes through a step-by-step scale-up stage. In this stage, the reaction itself will not change, but as the volume of the reactor changes, the heat transfer, Due to the differences in temperature, concentration, residence time distribution, convective heat transfer coefficient, etc. in small-scale equipment and large-scale equipment in the processes of mass transfer and momentum transfer, the reaction results have changed significantly. The operating conditions and product yields are different from those in the laboratory. The results of the small test are relatively different, forming a "magnification effect". In the production process of energetic compo...

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Problems solved by technology

Existing studies on axial flow agitators are less, so different feed flow rates, superficial gas velocities (superficial gas velocities = ventilation volume / cross-sectional area of ​​the cylinder of the stirred tank), stirring paddle types, stirring The influence of the rotation speed and the size of the stirred tank on the strong exothermic reaction process is of great significance in the enlargement process of the reactor

At the same time, during the enlargement process, the convective heat transfer coefficient outside the coil will also change with the superficial gas velocity, the paddle type of the stirring impeller, the stirring speed and the size of the stirring tank, and then the control of the heat transfer rate and reaction temperature will have a great impact. influences

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