Experimental study on gas-solid flow performance of a Jet J-valve Online publication date: Fri, 01-May-2020
by Xiaocheng Liu; Yuwei Zhang; Xiang Xu; Xiquan Li; Xiaoyong Xue
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 24, No. 2, 2020
Abstract: To solve the problem of a high pressure drop in an ordinary J-valve, this paper describes the design of a new type of J-valve, namely, the Jet J-valve. We contrast the ordinary J-valve with the Jet J-valve and analyse the material transport capacity and stability of pressure drops. The experimental results show that the pressure drop fluctuations of the riser, standpipe and J-valve are slightly greater in the states of dilute-phase and dense-phase transport for the Jet J-valve than for the ordinary J-valve. However, under the same operating conditions, the solids circulation rate is 41-84 kg·m–2·s–1 higher when the Jet J-valve is used. In addition, the pressure drop of the Jet J-valve is approximately 18% lower than that of the ordinary J-valve. When the steady state transitions to a slugging state, the solids circulation rate decreases by 76.5% and the pressure drop of the J-valve decreases by 23.3%, which is relatively small compared with that of the riser and the standpipe. [Received: December 30, 2017; Accepted: July 5, 2018]
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