CAJ | 학술논문

根据固体粉料流动特性与混合设备混合特点,结合粉体在连续混合机内的受力情况和有关粉体力学知识,总结出一套连续混合机各主要工艺参数计算方法,并用该方法对设计的一套应用规模的催化剂连续混合机进行详细工艺计算.计算结果表明,应用规模混合机粉体流动雷诺数与试验装置基本接近,粉体流动状态相似;各相对应部位的粉体质量流率也接近,功率计算结果在常规范围内.当处理量增大10倍时,混合机内最大粉体质量流率低于松散粉料立管的极限流率,表明设计方法可靠.
근거고체분료류동특성여혼합설비혼합특점,결합분체재련속혼합궤내적수력정황화유관분체역학지식,총결출일투련속혼합궤각주요공예삼수계산방법,병용해방법대설계적일투응용규모적최화제련속혼합궤진행상세공예계산.계산결과표명,응용규모혼합궤분체류동뢰낙수여시험장치기본접근,분체류동상태상사;각상대응부위적분체질량류솔야접근,공솔계산결과재상규범위내.당처리량증대10배시,혼합궤내최대분체질량류솔저우송산분료립관적겁한류솔,표명설계방법가고.
A design method for a particles continuously mixing machine was concluded according to the powder dynamics,the characteristics of solid particles flow and after carefully studying the powder resistance to stirrer and rotating disc in mixer.A set of continuously mixing machine for local catalyst plant was designed based on the above method,and the calculations of key parameters were presented in detail.The results showed that the powder flow pattern in the designed machine was similar to that of in the experimental model;the powder flow Renault numbers in the designed machine and in the experimental model were in the same resistance area;the relative powder mass flow rates in the designed machine were very close to those of in the experimental model.All calculation results including power were within the scope of safety and normal regulations.Even when the throughput of the mixing machine was enlarged 10 times,the maximum powder mass flow rate was still below the critical mass flow rate of FCC catalyst particles in vertical tubes.Thus,the design method was feasible.