共查询到20条相似文献,搜索用时 78 毫秒
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组合使用高效钢管空气换热器和热管式空气换热器对燃焦炉煤气加热炉余热回收系统进行改造,同时采用相应的节能措施,加热炉产量达30t/h,能耗在1.1GJ/t左右,烟气排烟温度在150℃左右。 相似文献
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介绍一种热轧加热炉烟气余热回收利用技术的系统流程、工艺设计方案、主要参数及经济效益。利用这套技术将加热炉烟气潜在余热进行梯级高效利用,并通过生产实践证明,达到了理想的应用效果。 相似文献
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降低加热炉排烟温度与避免余热回收设备的酸露腐蚀,是加热炉常规型式烟气余热回收的一对难以避免的矛盾。从分析烟气余热回收运行原理和运行方式入手,着重说明了加热炉应用复合相变换热技术进行烟气余热回收后,由于相变下段最低壁面温度整体可调,能够较好地解决这个问题。在邯钢中板厂加热炉上应用的复合相变换热技术,与常规余热回收系统的相比,可以回收更低温度的热量。该技术不仅适用于新建的余热回收系统,也适用于改造的系统。 相似文献
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主要介绍了加热炉节能降耗的两个方面:一方面是直接节能,即降低加热炉的燃料消耗和氧化烧损;另一方面是对加热炉排出的烟气余热进行有效回收,回收的余热可以用来预热空气或者燃料降低加热炉的能耗,也可以用来产生蒸汽进行外送产生经济效益。 相似文献
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倪志安 《Canadian Metallurgical Quarterly》2011,23(3)
马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础. 相似文献
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D. N. Reznikov 《Metallurgist》1962,6(12):535-537
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The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease. 相似文献
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Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions. 相似文献
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