共查询到19条相似文献,搜索用时 78 毫秒
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本文认真分析影响蜡油加氢处理装置氢耗的因素,得知反应温度、原料油硫含量、原料油密度等,都会给装置氢产生影响。为减少氢耗,应注重反应温度、原料油硫含量以及原料油密度的控制。同时,做好闭灯检查工作,避免装置氢气泄漏情况的发生,保证生产工作的顺利进行。 相似文献
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我公司织布车间共有76台织机,其中有26台织机是津田驹ZA—100型.该织机采用机械式测长盘装置(SDP)储纬,并以主、辅喷嘴和异型钢筘方式来引纬,其中主喷嘴1个,辅助喷嘴分成5组,共17~19个.我公司ZA—100型织机曾用于织造的玻璃布规格有:WE—116E—105和127布、WE—18K—105和127布以及7628—127布.本文介绍织造WE—18K—127印制线路板用玻璃布时,影响纬纱到达时间若干因素的探索试验. 相似文献
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利用热风循环干燥的方法,对铺装方式、转筒速度、装载量、初含水率、气流温度、气流速度等影响木束干燥效率和能耗的因素进行实验研究,探讨木束热风循环干燥参数对干燥时间和能量消耗的影响。实验结果表明,各参数对干燥结果的影响程度不一,按显著程度排序为:气流速度、初含水率、气流温度、装载量、铺装方式、转筒转速。 相似文献
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不同干燥因素对天然橡胶微波干燥过程的影响 总被引:1,自引:0,他引:1
使用动态称量微波干燥设备研究了不同微波功率密度、不同胶样厚度和不同初始含水率3种因素对湿天然橡胶微波干燥过程及表观质量的影响。结果表明,3种因素对湿天然橡胶微波干燥过程和胶样表观质量的影响较大;微波功率密度越大,失水速率就越大,干燥时间就越短,胶样易出现干燥发粘现象;胶样厚度越厚,失水速率越小,干燥时间就越长,易出现部分夹生和发粘现象;初始含水率越高,失水速率就越大,干燥时间就越长,胶样易出现部分发粘现象。微波干燥湿天然橡胶较为合适的微波功率密度、胶样厚度和初始含水率分别为30.14-34.2W/dm3,5~15mm和10%-20%。 相似文献
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评价变压器油电气性能的指标主要是介质损耗因素(90℃)、击穿电压。而变压器油介质损耗因素、击穿电压的影响因素主要是杂质和水分。润滑油茂名分公司通过改造抽真空过滤系统,增强脱水效果,有效降低介质损耗因素和含水量,提高击穿电压,确保变压器油的质量。 相似文献
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我国原油管道近几十年发展迅速,有些管道已经进入发展中后期,管道发生事故的概率上升。原油管道不可避免发生停输,安全停输时间是再启动的关键参数,对于管道的安全运行至关重要。根据输油管道温降公式,利用迭代法求解公式,并编制了应用软件。研究发现,安全停输时间不是一个定值,它随管道输量、出站温度、自然地温和原油比热容的增加而增加,随总传热系数的增加而降低。当管道周围参数发生变化时,需要密切关注安全停输时间,研究结果可以为原油管道的安全运行提供指导。 相似文献
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简要介绍了蜡结晶和原油胶凝的过程,介绍了国内外沥青质对蜡结晶和原油胶凝行为影响研究的,简要分析了沥青质对蜡结晶和原油胶凝不同影响的表面现象和内在原因,并在此基础上横向比较了各种说法的不同结论和内在机理解释,揭示了沥青质与蜡产生协同作用并影响原油流动特性的机理。 相似文献
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Effects of three drying schedules on fluid flow were studied in the sapwood and heartwood of Paulownia wood (Paulownia fortunei). Boards with a commercial thickness of 5 cm were randomly dried to a final moisture content of 8 ± 2% using a mild (T6E3), a moderate (T6E4), and a severe (T7E4) drying schedule. Permeability measurement was carried out when specimens reached the final moisture content. Results showed a significant difference in the specific gas permeability as well as liquid permeability of the boards dried under the three drying schedules. Furthermore, a significant difference was observed in the gas permeability of sapwood and heartwood, dried under the different schedules, but not much significant difference was seen in the liquid permeability between sapwood and heartwood. T6E3 had the highest liquid permeability; furthermore, it was reported to have resulted in the lowest warping and most homogeneous moisture profile. This mild schedule is therefore recommended for commercial drying of Paulownia wood when further preservation and impregnation processes are planned for the dried boards. In the meantime, it is concluded that the age and drying schedule have significant effects on the formation of tyloses, significantly affecting gas and liquid permeability in Paulownia wood. 相似文献
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Microwave Drying of Wood Strands 总被引:2,自引:0,他引:2
Characteristics of microwave drying of wood strands with different initial moisture contents and geometries were investigated using a commercial small microwave oven under different power inputs. Temperature and moisture changes along with the drying efficiency were examined at different drying scenarios. Extractives were analyzed using gas chromatography/mass spectrometry (GC/MS). The results showed that the microwave drying process consisted of three distinct periods (warm-up period, evaporation period, and heating-up period) during which the temperature, moisture change, and drying efficiency could vary. Most of the extractives were remnant during microwave drying. It was observed that with proper selections of power input, weight of drying material, and drying time, microwave drying could increase the drying rate, save up to 50% of energy consumption, and decrease volatile organic compound (VOC) emissions when compared with the conventional drying method. 相似文献