The Optimization Research Of Pipeline Degassing Cyclone Structure Parameters

There're many phenomena in the process industry that liquid flows with gas. Because the pipeline is a carrier to transport fluid, these phenomena cause gas resistance of the pipeline, local corrosion, and inaccuracy of the flow meters. It becomes the key factor of constraints of transporting fluid safely and efficiently. In recent years, relying on large quantity, small occupied area, small equipment investment, low operation and maintenance costs, easy cleaning, the technology of cyclone degassing online has attracted more attentions from researchers.This study combined with CFD numerical simulation and separation experiment study the factors on flow field and separation performance of the dispersed gas and dissolved gas. Research shows that:(1) Research shows that on the same flow conditions, increasing the more inlets to the degassing cyclone helps swirl chamber form more stability velocity field, pressure gradient and field efficient operation area, and improves the degassing performance.(2) Dealing with different particle size of the bubbles, It exists an optimal column diameter ratio. With the increase of the column diameter ratio, on the one hand, it increases the operation time and space of the tiny bubbles, which makes a more thorough separation of the liquid-gas two phase; On the other hand, it weakens the effect of inner cone on lifting the gas phase, at the same time, and it increases the energy loss of the fluid.(3) With bigger blade angle, liquid flow is easily changed from linear flow to high-speed stability of spiral flow. For axial degassing cyclone, the increase of blade angle will improve the separation performance and enlarge the energy consumption.