Numerical Simulation of Mixing Characteristics in Continuous Flow Gas-Liquid Reactor
1. School of Mechanical Engineering, Changzhou University, Changzhou 213164, China;
2. School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China;
3. Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry, Changzhou 213164, China
Abstract：In the common gas-liquid reactor, gas-liquid two-phase countercurrent is difficult to achieve gas-liquid balance when gas-liquid ratio is too large, and the operating elasticity is small. A continuous flow gas-liquid reactor with two flows in the same direction based on venturi structure was proposed, and the flow field in the continuous flow gas-liquid reactor was simulated by Fluent. The results show that the continuous flow reactor achieves the good contact of gas and liquid through the scaling of the throat structure. By means of tangential air intake, rotating flow of gas-liquid mixture is generated, and the droplet is evenly distributed on the cross section of the diffusion section under the action of centrifugal force, so as to realize the rapid and even mixing reaction of gas-liquid two-phase with high gas-liquid volume ratio. The mixing index was used to measure the mixing uniformity on the cross section of the continuous flow reactor, and the gas-liquid mixing effect was good for the droplet size of 10-1 000 micron and the gas-liquid volume ratio of 100:1-800:1. The results can lay a foundation for the optimization design of continuous flow gas-liquid reactor.
