Investigation of flow kinematics in the structured multibed catalytic cartridge

Diana Ezendeeva,Maxim Gordienko,Ivan Kabardin,Sergei Kakaulin,D.M Markovich,M.A Vorobyev,P.A Kuibin

doi:10.1051/epjconf/201919600058

Abstract

The reduction of harmful substances emission into the atmosphere is very important to create compact, energy-efficient catalytic units for afterburning volatile organic compounds. A key component of such units is the catalyst cartridge. The efficiency of its operation is provided by the supply of a gas flow with a uniform velocity field. To solve the problem, the gas flow distributor and an aerodynamic stand for its testing were created. A set of air-flow blades was used to align the velocity profile before the catalyst cartridge. Also flow kinematics inside the cartridge was investigated via laser Doppler anemometry method.

Highlights

Catalytic afterburning of volatile organic compounds is the most effective way of reduction of harmful substances emissions into the atmosphere
The results of visualization were obtained in two sections of the gas flow distributor in a rotary section and in a control section (Fig. 3)
The Reynolds number is based on the average velocity, a characteristic length in a 0,25 m - diameter of pipe and the kinematic viscosity and it is equal to 50 000

Summary

Introduction

Catalytic afterburning of volatile organic compounds is the most effective way of reduction of harmful substances emissions into the atmosphere. The creation of compact, energy-efficient catalytic units for the neutralization of gas emissions from harmful volatile organic compounds are very urgent task. The efficiency of the catalyst depends on the uniformity of the flow at its supply into the cartridge. To develop technical solutions for uniform air supply the gas flow distributor and an aerodynamic measuring stand for its study have been created (Fig. 1). The model consists of the following functional blocks: section of the mixer, the control section and rotary device, the catalyst’s section, and the node of the nozzle. The cartridge’s structure is based on corrugated structuring plates with holes about 1 mm in diameter. The length of both cartridges is 250 mm. Fig. 2. 3D geometry the gas flow distributor. 1- the nozzle section; 2- the mixer, 3 - rotary device, 4- control section, 5 - catalyst’s section

Experimental techniques

Results and discussion

Conclusion