The Mechanism оf Dust Trapping іn Venturi Pipes аnd іts Simulation by the Probabilistic Method
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2018, Vol 25, Issue
Abstract
Venturi pipes, widely used for wet cleaning of dust gases, are simple in design and operation, high-speed and high-performance devices. The process of dust cleaning in them is based on the contact of dust and droplets of the spray liquid with the subsequent increase and capture of "droplet-speck" conglomerates. For this, at first glance, a simple explanation, there are multistage and repeated physical processes of the interaction of droplets and dust when moving through the conduit, the neck and the diffuser of the Venturi pipe. Determination and optimization of parameters of hydrodynamic and mass-exchange processes of interaction of the gas-dust flow and irrigation fluid in the Veturi pipes is crucial for ensuring high overall efficiency of cleaning gases from dust in scrubbers. The article describes the processes that occur when cleaning gas from dust in the Venturi pipe. It is proposed to elaborate the processes of interaction of the dust with the liquid in each element along the length of the Venturi pipe, as well as in the air pipe behind it, focusing on the most significant sections of it, using the probabilistic method of mass transfer processes simulation, consider the diffuser as a place for the continuation of dust capture The formula for calculating the efficiency of dust capture in a diffuser is presented, which increases the accuracy of calculations of the total efficiency of dust extraction in the Venturi scrubbers. If the diffuser receives a place for the continuation of the meeting, the holding and moving of the specks throughout its length, this will allow for taking into account the large number of process parameters in each element of the Venturi pipe, assess their impact on the overall efficiency of dust extraction, optimize the most significant parameters, reduce the resistance of the Venturi pipe, save liquid flow and reduce overall operating costs for dust removal
Authors and Affiliations
V. Dovgalyuk, I. Pefteva
Keywords
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