论文部分内容阅读
风口回旋区对高炉及COREX熔化气化炉冶炼过程起着十分重要的作用,人们对风口回旋区进行了大量的试验与模拟研究。目前通过试验方法得到的风口回旋区仅仅是由若干个测量点确定。物理参数场可以用来准确确定回旋区边界,但是目前为止所有的研究风口回旋区的物理参数场都是由数值模拟确定,并且没有明确的回旋区的定义标准。在本研究中利用COREX熔化气化炉半周冷态模型,通过跟踪示踪颗粒的运动信息,得到观察面板处风口回旋区域的颗粒速度场。通过与目测结果的对比,确定超过0.15 m.s-1的颗粒速度标量场确定为风口回旋区域。通过本试验得到的回旋区边界可为回旋区的理论或数学模拟提供准确的边界条件。
The tuyere raceway plays a very important role in blast furnace and COREX melting gasifier smelting process, and a large number of tests and simulations have been conducted on the tuyere raceway. At present, the tuyere area obtained by the test method is determined by only a few measurement points. The physical parameter field can be used to determine the boundary of the meso-region accurately, but so far all the physical parameter fields of the tuyere raceway are determined by numerical simulation and there is no clear definition of the convolution region. In this study, the semi-ambient cold model of COREX melting gasifier was used to obtain the particle velocity field of the vents in the vents of the observation panel by tracking the motion information of the particles. By comparing with the visual test results, it is determined that the particle velocity scalar field exceeding 0.15 m.s-1 is determined as the tuyere convolution region. The cyclotron boundary obtained by this experiment can provide accurate boundary conditions for the theoretical or mathematical simulation of the cyclotron.