玻璃熔窑蓄热室用方镁石-镁橄榄石耐火材料

玻璃熔窑蓄热室格子体和炉墙的使用特点是对不同部位的每一种耐火材料提出有特殊的要求。通常,蓄热室格子体从上到下的温度范围为500~1 500℃。同时,耐火材料还遭受气体中碱元素的侵蚀、高温热风喷出后所引起的高达300~500℃的温度梯度作用,这要求必须在蓄热室格子体和内衬上使用具有较高抗侵蚀性和抗热震性的耐火材料。     

采用局部疏通法热修半连通式蓄热室格子体

半连通式蓄热室格子体倒塌堵塞严重,引起废气难排出,造成窑压增大,窑炉烧损加剧,采用局部疏通法热修格子体,可取得良好的效果.     

蓄热室隔墙砖材匹配探讨

本文根据太原平板玻璃厂450吨级浮法玻璃熔窑蓄热室格子体上部隔墙倒塌的实例,结合国外蓄热室隔墙选用砖材的情况,得出了在设计熔窑时,蓄热室各部位砖材的选用、匹配必须以该部位能承受的温度和燃料的特性为前提的结论.     

高温内窥镜在蓄热室内的应用

利用虚拟仪器软件LabVIEW通过便携式高温内窥镜对玻璃熔窑的蓄热室进行监控,可以直观地判别蓄热室内通道是否堵塞及格子体砖损坏倒塌情况,以便及时对通道进行清扫、维护,从而减少因蓄热室引起的玻璃质量问题和能源浪费。     

精细化管理熔窑蓄热室格子体

浮法玻璃熔窑蓄热室格子体承担进气排烟和蓄热的重要功能,随着窑炉运行时间的延长,蓄热室格子体会逐渐堵塞,进而影响生产稳定性和能耗水平。重点对浮法玻璃蓄热室格子体堵塞原因进行了分析,通过对处理方式的创新,实现了蓄热室格子体的持续畅通,保证生产稳定性和能耗的受控,同时延长了窑龄。     

提高蓄热效率的有效方式─—筒形格子体

提高蓄热效率的有效方式─—筒形格子体张国祥（深圳华晶玻璃瓶有限公司５１８０５１）本文通过蓄热室主体──格子体形式对蓄热效率影响的分析，介绍了一种新型格子体─—简形格子体，并讨论筒形格子体特点。一、格子体形式对蓄热效率的影响从蓄热室工作原理可知，其热效...     

玻璃池窑蓄热室,格子砖的选材与改进

近年来由于电熔锆刚玉砖的质量提高,品种增加和使用部位扩大,使池窑的寿命延长到5～8年,窑炉的薄弱环节由池窑主体熔池转向蓄热室和格子体,格子体的材质成为延长池窑作业周期的关键.如采用价格昂贵的十字型格子砖可使池窑造价提高1～1.5倍.作者综述了近年来蓄热室和格子体结构的革新,格子砖的侵蚀和机理.归纳了池窑、蓄热室和各部格子砖材质的选用.     

采用“延时高温烧融法”消除格子孔堵塞

介绍了用烧融法消除蓄热室格子体堵塞,保持蓄热室格子体畅通的方法和效果。     

玻璃熔窑蓄热室系统的使用及维护

本文论述在生产中如何保护和使用蓄热室系统,让蓄热室系统更好地为熔化与保窑服务,同时防止出现蓄热室倒塌、格子砖堵塞、后墙内外倾斜等现象的发生。     

燃煤高效节能三通道蓄热室的设计与实践

介绍三通道空气蓄热、单通道煤气蓄热室的设计程序及主要参数的确定,包括格子体总体积、空气蓄热室与煤气蓄热室格子体的体积比及具体尺寸、每层格子砖用砖数量、煤气蓄热室和空气蓄热室的气体流速,并以燃煤高效节能蓄热室实例进行验证。     

筒形格子砖排布方式的改进

参照玻璃熔窑蓄热室格子砖西门子式的排列结构,提出了新的筒形格子砖的排列方式,并通过两次在熔窑冷修设计中的应用,展示此结构改进的可行性。     

通过自然降温疏通燃煤气熔窑空气蓄热室

利用蓄热室工作的周期性,使空气蓄热室达到自然降温,以利于用捅渣法对格子体进行疏通,在提高疏通效果的同时不会对格子体造成大的影响。     

Forsterite refractories made with olivinite from Khabozerskiy deposit and their service in open-hearth furnace regenerator checkers

Conclusions Forsterite parts made of Khabozerskiy olivinite possess increased density, durability and stability at elevated temperatures.In open-hearth regenerator checkers forsterite brick possesses adequate wear resistance in service and melt dust resistance. The best results were obtained when this brick was used in air regenerator checkers.     

The service of regenerator checkers in open hearth furnaces

Summary An effective way of increasing the life of checkers is to increase the height of the structure made of chrome-magnesite brick to 10–12 courses. This reduces the average melting time, increases furnace output by 5–7%, and reduces the oil consumption by 7%.The dust settling on the refractory has a typically high content of iron oxides. At normal checker temperatures (not above 1400°C) the surface of the refractories forms friable, dusty deposits. With a rise in temperature in the regenerator the dust sinters, partly fuses, and sticks to the refractory. This cake is removed by blowing the checkers.Investigation of the refractories after service confirms that the phase changes,in the reaction layer of the brick, take place mainly owing to the action of iron oxides of the dust on the refractory. Fusing of firebrick is also intensified by oxides of iron contained in the dust.The mineral formation and destruction processes are greatly affected by the changing composition of the gaseous atmosphere, which is confirmed by the formation of mixed crystals of magnetite and haematite in the crusts and reaction zones of the refractory.Of the refractories tested in the checkers, the best was chrome—magnesite.To explain the possibility of increasing the life of checkers, experiments should be made using forsterite brick of high quality in the 15 top courses of the checkers using the Cowper system of building the checkers.     

玻璃熔窑蓄热室格子体热修

简述了玻璃熔窑蓄热室工作原理,着重介绍了蓄热室的热修过程,以及格子体的升温要求。并对热修前后的熔窑油耗和玻璃质量进行对比。     

浮法玻璃熔窑蓄热室条形砖与筒形砖格子体的比较

以公司浮法线为例,阐述了条形砖格子体与筒形砖格子体在生产中参数的对比,以及浮法玻璃熔窑蓄热室格子体维护的重要性。     

浮法玻璃熔窑蓄热室格子砖的损毁过程与选材

借助SEM分析了目前浮法玻璃熔窑蓄热室常用格子体在使用过程中的损毁机制,结果表明,铝硅系和AZS格子体的损毁主要是受气体侵蚀介质中的Na、SO2和Na2SO4蒸气等作用,产生霞石化或反霞石化的相变,伴随着的体积膨胀效应会使之产生裂纹、疏松和剥落;以方镁石为主晶相的格子体其损毁的原因应归因于高温环境中碱蒸气作用下方镁石的再结晶长大,以及中温条件下液态芒硝的侵蚀作用;同时,助燃空气换向产生的热震作用也可使格子体产生爆裂.文中还阐述了目前蓄热室格子体的选择方案.     

Production and service testing of small-size fired and non-fired forsterite brick

Conclusions The use of small-size fired forsterite bricks for regenerator checkers in open-hearth furnaces is tantamount to using large-size fired bricks and provides the same wear resistance, making it possible to increase the output of forsterite checker bricks and reduce the cost of production for sterite checker bricks and reduce the cost of production simultaneously.The good results of the preliminary tests show the effectiveness of using forsterite bricks in the top part of the checker.The use of non-fired bricks to the extent of 50 to 60% of the total number required creates further possibilities for stepping up forsterite checker refractory output, reducing the cost by about 25% and also stepping up the output of magnesite-chrome roof brick.     

基于中心点法的蓄热室顶部温度补偿

辨识焦炉火道温度和蓄热室温度的关系模型,需要对辨识数据进行预处理.针对煤气交换给蓄热室顶部温度带来的周期性影响,提出了基于中心点法的蓄热室顶部温度补偿处理方式,分析了对温度模型辨识数据进行预处理的必要性.采用中心点补偿法对现场数据进行补偿处理,取得了预期的效果.     

底烧液化石油气法疏通蓄热室格子体

通过用底烧液化石油气法疏通蓄热室格子体,既简单方便又节约了成本,使产质量得到了提高,又延长了窑炉寿命.