生物质燃气焦油的撞击离心分离技术

Impact Centrifugal Separation Technology of Biomass Tar

设计了一种新型生物质燃气焦油分离器。该焦油分离器同时具有冷却降温促焦油冷凝析出和分离焦油液滴的作用。推导了该分离器中旋转叶片的运动轨迹方程。用随机数生成器模拟了500个焦油微珠在分离器横截面的位置坐标,并计算了这些微珠被七级叶片碰撞阻拦的数量,从而得到了分离效率与叶片宽度的关系。结果表明,增加叶轮宽度和叶轮级数、提高叶轮旋转速度能提高该分离器分离效率。在本文设定情况下其最高分离效率可达60%左右。

This paper presents a design of a new biomass tar separator that conducts the condensation of tar bycooling and the separation of tar droplets by impact and centrifugation. The paper also derives themotion-trajectory equation of the rotating blades to compute the intercept efficiency of the separator. We firstsimulated the coordinates of 500 tar micro beads in the cross section of the separator with a random numbergenerator,and calculated the number of the beads collided by the seven-stage blades subsequently. Thus,weobtained the relation between the separation efficiency and the paddle width. The results demonstrated that anincrease in the paddle parameters of separator,i.e.,width,stage and rotation speed enhanced interceptefficiency with the highest efficiency of about 60%.