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蓄热式加热炉换向燃烧时,煤气换向阀至烧嘴之间管道里残留的煤气直接被排入大气。为了能够降低蓄热式加热炉能源消耗、减少污染排放,对蓄热式加热炉换向过程开展探究。对唐山市某钢厂一座160 t/h蓄热式加热炉设计了蓄热式加热炉烟气反吹系统,通过科学的时序控制和安全联锁,与原蓄热式加热炉控制程序合理链接,实现整套系统安全可靠运行。蓄热式加热炉烟气反吹系统的投入应用,使加热炉单位能耗由原来的0.882降低至0.823 GJ/t,CO减排率达到94.9%,同时为燃烧控制及维修提供了数据依据。 相似文献
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蓄热式加热炉以其节能、环保双重效益倍受青睐,本文通过实践介绍蓄热式加热炉控制系统与传统加热炉控制系统异同,蓄热式加热炉控制策略,应用中存在问题及解决方案。 相似文献
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介绍了唐钢几座蓄热式轧钢加热炉所采用的主要工艺技术,并结合生产实际,重点剖析了唐钢蓄热式加热炉发生过的各类事故的现象、原因和措施,提出了较合理的工艺优化及改进措施。希望能给国内轧钢企业广泛推广应用蓄热式加热炉,以及更好利用已有蓄热式加热炉提供有益的借鉴。 相似文献
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当前蓄热式加热炉普遍存在的火焰刚性偏弱及火焰不稳定等特点,为了优化加热炉的燃烧工况,文章通过仿真软件对蓄热式加热炉进行网格划分建立模型,充分对炉内燃烧状况进行分析研究,从而得出蓄热式加热炉的最优化参数。 相似文献
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由于蓄热式加热炉的复杂性,传统的PID控制无法满足其精确的温控要求,而模糊控制具有许多传统控制方法无法比拟的优点.结合蓄热式加热炉的特点,采用模糊控制,实现了蓄热式加热炉的温度自动控制. 相似文献
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介绍了型钢属性的自动提取,单重、总重的自动计算,以及其属性的自动更新,介绍了型钢BOM的自动生成.阐述了其设计方法和实现技术. 相似文献
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Although most research on the control of automatic prejudice has focused on the efficacy of deliberate attempts to suppress or correct for stereotyping, the reported experiments tested the hypothesis that automatic racial prejudice is subject to common social influence. In experiments involving actual interethnic contact, both tacit and expressed social influence reduced the expression of automatic prejudice, as assessed by two different measures of automatic attitudes. Moreover, the automatic social tuning effect depended on participant ethnicity. European Americans (but not Asian Americans) exhibited less automatic prejudice in the presence of a Black experimenter than a White experimenter (Experiments 2 and 4), although both groups exhibited reduced automatic prejudice when instructed to avoid prejudice (Experiment 3). Results are consistent with shared reality theory, which postulates that social regulation is central to social cognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Evidence from studies of nonmnemonic automatic cognitive processes provides reason to expect that schizophrenia is associated with exaggerated automatic memory (implicit memory), or automatic hypermnesia. Participants with schizophrenia (n?=?22) and control participants (n?=?26) were compared on word stem completion (WSC) and list discrimination (LD) tasks administered using the process dissociation procedure. Unadjusted, extended measurement model and dual-process signal-detection methods were used to estimate recollection and automatic memory indices. Schizophrenia was associated with automatic hypermnesia on the WSC task and impaired recollection on both tasks. Thought disorder was associated with even greater automatic hypermnesia. The absence of automatic hypermnesia on the LD task was interpreted with reference to the neuropsychological bases of context and content memory. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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分析了烧结配料工艺要求和先进的自动配料设计思想.介绍了总给定自动配料、自动振打、自动换仓等在我厂的实现情况.介绍了南京三埃微机皮带秤、我厂自行设计开发的上位机智能监控系统.其整体结构为集散型控制模式. 相似文献
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轧钢加热炉燃烧自动控制系统的运行机制 总被引:2,自引:0,他引:2
轧钢加热炉燃烧自动控制在绝大多数场合被理想化,认为自动就是无人操作;同时也自然就有与之完全对立的另一种观点,认为轧钢加热炉燃烧自动根本不好用,只能手动.通过分析控制方法和现场可能出现的情况,总结了切合实际的自动运行机制,也是在目前现有条件和技术水平下切实可行的实现燃烧系统自动控制的最好途径. 相似文献