发生炉煤气用于玻璃制品退火实践

通过对发生炉热煤气进行简单除尘、除,采取管道加压,保证热煤气的远距离持续供应,用于玻璃制品退火.     

玻璃制品电热退火窑计算机辅助设计

根据Ｌ．Ｈ．Ａｄａｍｓ和Ｅ．Ｄ．Ｗｉｌｌｉａｍｓｏｎ的退火原理和退火规则，建立了玻璃制品电热退火窑的热平衡数学模型，并由计算机计算，计算结果基本上符合实际，应用此软件，可以进行玻璃制品电热退火窑的计算机辅助设计。     

高温煤气脱硫剂再生性能研究进展

金属复合型脱硫剂已经成为高温煤气脱硫剂的研究重点,脱硫剂不仅要求具有良好的硫化能力,还必须易于再生,以达到多次循环使用及降低生产成本的目的。介绍了中高温煤气脱硫剂的再生性能的研究概况,包括:铁和锌系列脱硫剂、钙和铈系列脱硫剂、铜和锰系列脱硫剂。大量实验研究表明,脱硫剂的种类和再生工艺与其再生后的脱硫特性密切相关,再生结果是脱硫剂能否工业化应用的关键环节之一,在考察脱硫剂硫化特性的同时,必须注重脱硫剂再生特性的研究。     

玻璃熔窑煤气格子体的热修

煤气蓄热室发生堵塞造成火焰放不出来,严重影响熔窑温度制度,对熔窑造成一定危害,通过进行热修格子体,取得了很好的效果,带来了一定的经济效益。     

Modelling Annealing Lehrs for Flat Glass

Computer simulation of heat transfer in annealing lehrs for flat glass is combined with a method developed earlier for the calculation of stresses in glass. With this combined model one can predict stresses produced by annealing schedules that are readily realized in practice. Implications for the design, operation, and energy economy of lehrs are discussed.     

Optimum Schedule for Annealing Flat Glass

This paper formulates and solves the problem of optimum annealing of glass in which one seeks to minimize either residual stress or annealing time. An approximate analysis shows that residual stress is a weighted integral of cooling rates and that an optimum schedule is obtained when the cooling rate is inversely proportional to the square root of the weighting function. Several multibreak annealing schedules are investigated. It is found that a practical and nearly optimum schedule in this class is a two-break schedule that cools glass most slowly in a 65°CC interval and most rapidly outside this interval. It yields an optimum stress significantly lower than that of a constant-rate annealing schedule. Furthermore, the optimum is not very sensitive to minor changes in the schedule.     

Nonlinear Annealing of Glass

Transient as well as residual stresses were measured in laboratory experiments on annealing by nonlinear cooling schedules. The data on transient stresses, in particular, were incompatible with a classical view of annealing but they could be explained by a more recent model of annealing, in which account is taken of structural as well as stress relaxation. The potential utility of nonlinear annealing schedules is also discussed briefly.     

玻璃熔窑的热修

为使玻璃熔窑各部位的耐火材料使用寿命同步,常对易蚀损部分进行热修,以延长炉龄,创造更多的经济效益。介绍了对熔窑大碹热修的具体施工方法与注意事项。     

热熔装饰玻璃退火温度及表面质量控制研究与实践

热熔玻璃在生产过程中,如果退火温度、保温时间控制不合理,玻璃破裂的几率上升,成品率下降;玻璃选材不合理、摆放方向不正确、模具选材不当,废气治理措施不可靠,还会引起玻璃表面缺陷,造成车间环境污染.通过生产实践,结合理论计算,给出了一组针对不同热熔玻璃产品的优化退火温度、保温时间及冷却速度生产参数,提出了控制表面质量、减少环境污染的措施.     

Fine Annealing of Optical Glass

Since the most important characteristic of optical glass is the uniformity of its refractive index, which is itself a function of fictive temperature, any fine annealing treatment must be such as to bring about substantial uniformity in fictive temperature. Methods of accomplishing this are reviewed. In terms of total required time in the annealing process, the most efficient method consists of soaking the glass for a short time at a temperature near the annealing point and cooling at a constant rate to a temperature below the annealing range and at an increased rate to room temperature. Formulas are given for specifying the parameters in the annealing schedule in terms of the final condition of the glass as to stress and index. The several outstanding advantages of this method of annealing are discussed.     

铁锰高温煤气脱硫剂的程序升温还原(TPR)行为研究

考察了Fe-Mn复合氧化物脱硫剂的H2-TPR和CO-TPR还原行为,并与氧化铁和氧化锰脱硫剂的还原行为进行比较。结果表明:氧化锰脱硫剂较氧化铁脱硫剂更易被H2还原;焙烧温度从300℃升高到500℃,脱硫剂中氧化锰活性组分还原性变弱,但对氧化铁活性组分还原性影响不大;焙烧温度升高至750℃,脱硫剂还原性变弱。随着脱硫剂中锰相对含量的增大,脱硫剂的还原性变强,还原峰前移。铁锰摩尔比对脱硫剂中氧化铁活性组分的CO-TPR还原行为影响不大,但对活性组分氧化锰的还原行为有一定影响。