干熄炉内平均换热系数的研究

根据干熄炉内焦炭换热的特点，用干熄炉模型对焦炭粒度和冷却气体流量等参数进行了试验。结果表明，平均体积换热系数随焦炭粒度变小而急剧增加。     

干熄炉内影响焦炭下降因素的研究

采用示踪法和数字摄像设备，研究了焦炭在干熄炉冷态模型内的下降行为，得到了3种风帽条件下焦炭下降的特点和规律。结果表明，连续下料与否对焦炭下降的运动轨迹和平均速度的分布趋势影响不大，不产生本质变化。     

提高干熄焦干熄率

介绍了安钢焦化厂75 t/h干熄焦干熄炉系统运行状况,分析了目前生产中存在的问题,提出了改进干熄炉干熄率的工艺措施和方法,为提高回收热能绩效,增加锅炉发电和改善冶金焦质量,提供了科学生产依据。     

利用干熄炉焖炉作用降低炼焦耗热量的实践

充分发挥干熄炉对焦炭的延时焖炉作用,在满足焦炭质量的前提下,通过采取一系列措施提高炉温的均匀性和稳定性,降低焦炉标准温度,将成焦温度控制在较低水平,从而达到焦炉节能减排的目的。     

基于自动控制概念的干熄炉传热一维模型

根据多孔介质理论，采用非局域热平衡方法，建立了干熄炉内传热的一维数学模型。通过数值求解，得到了干熄炉内气体和焦炭的温度分布规律，通过干熄炉内冷却段焦炭和气体的温度分布可以判断熄焦量与冷却风量是否合理匹配。     

干熄炉多段式斜道技术的应用研究

研究了多段式斜道技术抑制干熄炉内斜道区焦炭浮起现象的机理。研究发现,在浮起初期焦炭层阻力是造成焦炭浮起的关键因素,而速度因素只是在浮起后期才起作用。应用多段式斜道技术可以减少焦层阻力以抑制焦炭浮起,文中介绍了唐钢在实际生产中的应用情况。     

干熄炉内环形风道的改进

目前,国内建成投产及在建的干熄焦装置已超过155套,正朝着规模大型化、设备国产化的方向发展.随着大型化干熄焦的投产,于熄炉内环形风道出现了一些问题,其中,涟钢、中特钢铁、唐钢等先后出现了干熄炉环形风道倒塌现象.     

干熄炉斜道在线检查技术的应用

介绍了一种干熄炉斜道在线检查的方法,能直观检查斜道耐材的损坏情况,便于更好地掌握干熄炉运行状况,有利于延长年修周期。     

干熄炉-锅炉系统质能诊断与分析

介绍了宝钢三期干熄炉-锅炉系统质能诊断方案及其测试结果，分析了不同生产率下的主要技术经济指标，提出了降低焦炭烧损率、改善炉内传热和实现优化控制的技术措施。     

干熄炉预存段内料面堆积形状的研究

焦炭在干熄炉预存段内料面形状的分布对焦炭的下降和焦炭与冷却气体间的换热具有重要的影响。考察了3种料钟布料情况,从实验和理论两个方面对不同料线深度条件下焦炭堆积形成的料面形状进行了研究。理论计算结果与实验数据吻合较好,验证了数学模型的正确性和实验的可靠性。     

干熄焦冷却室耐磨浇注料的研究

介绍了宝钢干熄焦冷却室耐磨浇注料的研究和应用情况，新研制的耐磨浇注料与原喷补料相比，磨损速度降低了10倍，大修炉龄由原来的4．4年延长到8年，该浇注料还可应用于温度更高的部位。     

Numerical Investigation of Pressure Drop in Single Pellet String Reactors

In narrow fixed-bed reactors the influence of the confining wall on pressure drop cannot be neglected. Here, the pressure drop in single pellet string reactors, a limiting case of fixed-bed reactors with a cylinder-to-particle diameter ratio below 2, is studied using computational fluid dynamics simulations. Deviations to the Ergun, and more specifically Blake-Kozeny equation are evident though the general trend is met. A geometry-based weighting factor is introduced to scale the influence of the confining wall in an equivalent diameter expression. Agreement between numerical simulation and pressure drop predictions from correlation are thereby improved significantly.     

干熄炉-锅炉系统最优操作与控制数学模型

开发了干熄炉-锅炉系统最佳操作与控制数学模型，确定了干熄炉-锅炉系统生产率与最佳循环风量、生产率与最佳二次风量等之间的在线关联式，并成功地应用于宝钢三期，实现了在线优化指导和控制。     

Pressure drop measurements and modeling on SiC foams

Foam-structured beds are likely to be the next generation of catalyst supports due to their interesting specific properties (large exchange area, low pressure drop, easy control of external porosity, etc.). Nevertheless, chemical engineering parameters of this new catalyst support types are still not completely clear for the scientific community and many approaches are attempted to solve this problem. SiC foams offer the dual advantages of the interesting properties of structured beds and the intrinsic thermal and mechanical properties of silicon carbide as a catalytic support. In the present work, the problem of pressure drops along foam beds is studied with a new simplistic geometrical model as a first step in the understanding of the peculiar hydrodynamic behavior of SiC foams in chemical processes. The proposed model was successfully validated by experimental results on a relatively large range of parameters which fully confirm the validity of the model.     

风帽对干熄焦炉内焦炭下降运动的影响

采用示踪法和数字摄像设备，研究了焦炭在干熄炉冷态模型内的下降行为，得到了在高、低和椭圆风帽条件下焦炭下降的特点和规律。实验结果表明，风帽对焦炭下降的影响是区域性的，对焦炭下降的顺畅性影响较小。     

CDQ焦炭运动粘性流模型壁面摩擦的研究

采用滑移边界条件,分析了颗粒群与壁面摩擦力的2个决定因素:摩擦系数和法向压力,提出了摩擦力计算表达式,并应用于模拟干熄炉内焦炭运动的粘性流模型。计算结果表明,滑移边界条件的处理能显著改善干熄炉渐扩段的模拟;干熄炉中下部,壁面摩擦力对近壁处焦炭下降影响显著;文中提出的摩擦力计算方法适用于模拟干熄炉内焦炭下降的粘性流模型。     

Study of Single Phase Flow Heat Transfer and Friction Pressure Drop in a Spiral Internally Ribbed Tube

The experimental results of single‐phase flow heat transfer and pressure drop experiments in the turbulent flow regime in a spirally ribbed tube and a smooth tube are presented in this paper. The ribbed tube has an outside diameter of 22 mm and an inside diameter of 11 mm (an equivalent inside diameter of 11.6 mm) and the smooth tube has an outside diameter of 19 mm and an inside diameter of 15 mm. Both tubes were uniformly heated by passing an electrical current along the tubes with a heated length of 2500 mm. The working fluids are water and kerosene, respectively. The experimental Reynolds number is in the range of 10⁴–5 · 10⁴ for water and is in the range of 10⁴–2.2 · 10⁴ for kerosene. The experimental results of the ribbed tube are compared with those of the smooth tube. The heat transfer coefficients of the ribbed tube are 1.2–1.6 fold greater than those in the smooth tube and the pressure drop in the ribbed tube is also increased by a factor of 1.4–1.7 as compared with those in the smooth tube for water. The corresponding values for kerosene are 2–2.7 and 1.5–2, respectively. The heat‐transfer enhancement characteristics of the ribbed tube are assessed. This tube is especially suitable for augmenting single‐phase flow heat transfer of kerosene. Correlations for the heat transfer and the pressure drop for the spirally ribbed tube are proposed, according to the experimental data.