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介绍了陕西神木化学工业有限公司Texaco气化炉炉壁超温的具体过程,深入剖析了炉壁超温的根本原因,提出了炉壁超温的解决办法及应对措施,在解决公司生产难题、保证系统长周期稳定运行的同时。为同行业厂家提供了防止炉壁超温的范例。 相似文献
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一吸塔超温的原因,一类是热负荷大,一类是一甲液浓度高.结合超温时的工艺状况,判断超温的原因,采取相应的措施. 相似文献
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介绍了合成氨装置一段炉炉管出现的"红管"超温现象,对炉管超温的原因进行阐述,并提出了处理对策。 相似文献
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文章简单介绍了回转窑托轮瓦在使用过程中异常发热的应急处理方法及回转窑现场工位应准备处理发热问题的常用工具。同时对引起回转窑拖轮瓦发热的原因进行归纳与简析,并给出了相应的解决措施。 相似文献
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通过对2070t/h锅炉屏式再热器爆管现象的综合分析,找到了产生爆管的原因,制定了现场屏式再热器泄漏的处理对策,分析了事件所暴露出的问题。 相似文献
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通过验算设计参数,分析03-B002E01出口温度超标原因,发现03-B002E01设计热负荷计算有误,换热面积设计选取过大,造成超温,提出减少换热面积增加热负荷是降低03-B002F01出口温度的主要途径。 相似文献
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通过对耐火衬里使用寿命短、炉口和热电偶孔部位超温原因的分析,对炉口、热电偶孔部位耐火衬里进行了改进,增加了气化炉筒体下部刚玉砖的厚度,解决了炉壁超温问题,耐火衬里用寿命从原来的不到8000h延长到16000h以上。 相似文献
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固相法聚烯烃氯化基本现象研究 总被引:3,自引:1,他引:2
以固相法高氯化聚乙烯(HCPE)的制备为例,研究固相法聚烯烃氯化中的基本现象。结果表明:固相法聚烯烃氯化中存在着明显的粘结、烧结、局部过热和密度增高等现象,温度是影响粘结和烧结的主要因素,粘结使氯化速度降低、氯分布均匀性变差,局部过热导致晶区熔融参与氯化,原料、氯含量和粘结决定了产物的密度。 相似文献
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Nektaria‐Marianthi Barkoula Ton Peijs Tilo Schimanski Joachim Loos 《Polymer Composites》2005,26(1):114-120
The concept of “overheating” is one of the known methods for manufacturing single polymer composites. This concept is validated on two categories of semi‐crystalline polymers: the drawable, apolar (i.e., isotactic polypropylene [iPP], ultra‐high molecular weight polyethylene [UHMWPE]) and the less drawable, polar ones (i.e., polyethyleneterephalate [PET] and polyamides [PA]). The interchain interactions in apolar polymers are relatively weak and therefore a high degree of drawability can be obtained. Polar polymers on the other hand have relative strong interchain interactions, they are therefore less drawable. A shift higher than 20°C of the melting temperature can be obtained in case of highly extended iPP (draw ratios >14). Ultra‐drawn PE shows only 10°C overheating upon constraining and this is mainly due to the change in chain mobility for PE in the hexagonal phase. In case of PET and PA6, only draw ratios of 4 could be reached; however, temperature shifts of about 10°C for constrained fibers compared to unconstrained fibers could be measured. A proof of principle of the potential of the constraining concept for the manufacturing of single polymer composites is obtained by the preparation of single fiber model composites. The effect of the post‐drawing conditions on overheating is examined in details on the example of iPP. It is concluded that both post‐drawing temperature and ultimate draw ratio have a significant influence on the degree of overheating. POLYM. COMPOS., 26:114–120, 2005. © 2004 Society of Plastics Engineers 相似文献