共查询到20条相似文献,搜索用时 203 毫秒
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我公司是一家以重油为原料的燃气轮机电厂,重油在送入机组燃烧前需除去其中的钾、钠和固体颗粒物,以免堵塞过滤网、喷嘴,磨损叶片、燃油泵等设备。重油处理设备是德国Alfa Laval公司的GT—PX517TGV型离心式分离机。其工作原理为加水并搅拌使重油中的钾、钠溶解到水中,再进入高速旋转的分离机内,在离心力的作用下分层。油和水通过各自的管道输出,固体颗粒物则通过定时(约45min)瞬间打开排渣口排出分离机。3条处理线各由两级(两台)分离机串联而成。 相似文献
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云南某糖厂的制糖分离工艺用离心脱水方式。分离机主要由锥体转筒、驱动电机组成,电机轴与转筒直接相连。从高浓度的糖水中结晶出来的固体糖,在锥体转筒中进行脱水处理。处理的过程是通过转筒变速旋转,将筒内物料的水抛干。分离机用24-8-6多极电机,其转速是突变的。频繁的升、 相似文献
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针对直管式科里奥利质量流量计固有频率高且相位差小、难以实现高精度测量的问题,对数字式过零检测和计及负频率的DTFT这两套计算频率和相位差的算法进行深入研究,评估其测量的精度和处理的实时性,以说明将其应用于直管式科氏质量流量计的可行性。选择能够满足信号实时处理要求的DSP芯片TMS320C6726为处理核心,研制科氏质量流量变送器。针对直管式科氏质量流量计信号处理的难点和DSP芯片上外围模块资源的局限性,给出变送器硬、软件设计方案,实时实现两套算法。对研制的变送器进行处理时间测试、零点稳定性测试、电信号测试和水流量标定实验。结果表明,所研制的变送器具有较好的处理实时性和精度。 相似文献
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E. R. Zvereva A. V. Dmitriev M. F. Shageev G. R. Akhmetvalieva 《Thermal Engineering》2017,64(8):591-596
Fuel oil plays an important role in the energy balance of our country. The quality of fuel oil significantly affects the conditions of its transport, storage, and combustion; release of contaminants to atmosphere; and the operation of main and auxiliary facilities of HPPs. According to the Energy Strategy of Russia for the Period until 2030, the oil-refining ratio gradually increases; as a result, the fraction of straight-run fuel oil in heavy fuel oils consistently decreases, which leads to the worsening of performance characteristics of fuel oil. Consequently, the problem of the increase in the quality of residual fuel oil is quite topical. In this paper, it is suggested to treat fuel oil by additives during its combustion, which would provide the improvement of ecological and economic indicators of oil-fired HPPs. Advantages of this method include simplicity of implementation, low energy and capital expenses, and the possibility to use production waste as additives. In the paper, the results are presented of industrial tests of the combustion of fuel oil with the additive of dewatered carbonate sludge, which is formed during coagulation and lime treatment of environmental waters on HPPs. The design of a volume delivery device is developed for the steady additive input to the boiler air duct. The values are given for the main parameters of the condition of a TGM-84B boiler plant. The mechanism of action of dewatered carbonate sludge on sulfur oxides, which are formed during fuel oil combustion, is considered. Results of industrial tests indicate the decrease in the mass fraction of discharged sulfur oxides by 36.5%. Evaluation of the prevented damage from sulfur oxide discharged into atmospheric air shows that the combustion of the fuel oil of 100 brand using carbonate sludge as an additive (0.1 wt %) saves nearly 6 million rubles a year during environmental actions at the consumption of fuel oil of 138240 t/year. 相似文献
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针对调峰型燃气轮机电厂对燃料重油的不同要求,介绍了某电厂的机组配置、两类重油处理装置的工作原理和处理效果,指出优化重油处理装置的运行方式,可以使调峰机组经济、高效地利用,并避开油质下降引起的安全风险. 相似文献
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优化启动方案实现气化小油枪直接点燃煤粉 总被引:2,自引:0,他引:2
锅炉启停过程中的耗油是火电厂燃油消耗的主要原因之一,降低锅炉启停过程中的耗油对火力发电厂的节能降耗有举足轻重的作用,大唐太原第二热电厂通过对启动机组过程的方案优化,从而实现气化小油枪直接点燃劣质煤粉,减少启动耗油,节油效果显著,在燃用劣质煤的机组实现小油枪直接点火的课题研究中取得重大突破。 相似文献
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针对茂名热电厂6号机组检修后燃料量异常波动现象,进行故障分析、故障点现场检查和排除,提出了提高EH油品质的多项措施。 相似文献