Hybrid pulsed fluidized bed based on electrostatic charge monitoring and on-line monitoring method of electrostatic charge

Abstract

The present invention is a mixed pulse fluidized bed based on electrostatic charge monitoring, which includes a mixed gas flow gas supply device and a fluidized bed, and is characterized in that it also includes an electrostatic charge monitoring component, and an electrostatic charge sensing component of the electrostatic charge monitoring component is included. Placed in the fluidized bed, one end of the data collector is connected with the electrostatic charge induction component, and the other end is connected with the computer. The electrostatic charge on-line monitoring method includes: the electrostatic charge induction component collects the electrostatic charge signal in the fluidized bed in real time, and transmits it to the first and second signal amplifying modules; the first and second signal amplifying modules amplify the electrostatic charge signal and transmit it to the data collector; the data collector transmits the electrostatic charge signal to the computer; the temperature and humidity recorder monitors the temperature and relative humidity of the gas in the fluidized bed; the computer performs noise reduction processing in groups according to the set time period; Power spectral density function diagram (PSDF) to explore the effect of the addition of pulsed gas flow on the fluidization characteristics inside the fluidized bed.

Description

technical field [0001] The invention belongs to the field of fluidization, and relates to a mixed pulse fluidized bed based on electrostatic charge monitoring and an on-line electrostatic charge monitoring method. Background technique [0002] The pulsed fluidized bed can deal with materials that are easy to agglomerate, have high viscosity and high heat sensitivity, and effectively overcome the disadvantages of channeling, dead zone, local overheating, etc., so that the gas and solid are evenly mixed and contacted, and the heat and mass transfer efficiency is improved. In order to enhance the stability of fluidization, it is also a new type of fluidization technology to mix stable gas flow with pulse gas flow in a pulsed fluidized bed. However, during the fluidization process, static charges are generated and accumulated due to the frictional collision between particles and between particles and the vessel wall. The accumulation of excessive electrostatic charges may cause ...

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Problems solved by technology

[0003] Commonly used electrostatic detection methods in fluidized beds include electrostatic probe method and Faraday cylinder method. Although the existing methods have made many improvements and perfections to these two methods, it is still impossible to achieve online and accurate measurement of particle charge in the fluidized bed. , NDT

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