检索结果-南通市图书馆

热力发电 2012年第8期41卷 54-,58页

作者：曾蓉冯继勇余长开重庆电力高等专科学校重庆400053 重庆发电厂重庆400053 华能珞璜电厂重庆402283

由于煤质变差,某360MW机组"W"型火焰锅炉燃烧不稳,需大量投油助燃。对此,进行卫燃带改造。改造后,燃烧工况明显改善,火焰稳定性提高;助燃油投入量减少,机组负荷在200MW左右可不投油助燃;锅炉排烟温度由170～180℃降至150～160℃,大渣和... 详细信息

由于煤质变差,某360MW机组"W"型火焰锅炉燃烧不稳,需大量投油助燃。对此,进行卫燃带改造。改造后,燃烧工况明显改善,火焰稳定性提高;助燃油投入量减少,机组负荷在200MW左右可不投油助燃;锅炉排烟温度由170～180℃降至150～160℃,大渣和飞灰含碳量降低。

关键词： 360 MW机组锅炉卫燃带排烟温度飞灰含碳量

W型火焰锅炉油枪炉内备用自动投运控制策略的应用

在线全文

学校读者我要写书评

暂无评论

热力发电 2013年第4期42卷 80-83页

作者：廖树荣刘海宋庆周刚余长开华能重庆珞璜发电有限责任公司重庆402283

针对华能珞璜电厂2×600MW机组和4×360MW机组在锅炉燃烧不稳定时需要快速投油稳燃的问题,提出了油枪炉内备用自动投运控制策略,并相应地优化了锅炉保护控制功能。投入油枪炉内备用自动投运控制功能后,5号机组在负荷为598MW,炉膛压力为-... 详细信息

针对华能珞璜电厂2×600MW机组和4×360MW机组在锅炉燃烧不稳定时需要快速投油稳燃的问题,提出了油枪炉内备用自动投运控制策略,并相应地优化了锅炉保护控制功能。投入油枪炉内备用自动投运控制功能后,5号机组在负荷为598MW,炉膛压力为-26Pa工况下,因炉膛突然垮焦炉膛压力急剧波动至-295Pa,控制系统自动炉膛正压波动至503Pa,自动投入炉内备用油枪32s后,经过一次震荡炉膛压力快速稳定至-39Pa左右,有效避免了因炉膛压力突变引起的机组非计划停运事故的发生。

关键词： W型火焰锅炉稳燃油枪炉内备用锅炉保护控制

在线全文

学校读者我要写书评

暂无评论

基于电厂作业全过程安全管控现代化的探索

重庆电力高等专科学校学报 2022年第5期27卷 37-39,44页

作者：郑鹏梁仕铓余长开廖开友华能重庆珞璜发电有限责任公司重庆402283 华能重庆分公司重庆401120

提出电厂生产现场实施现代化安全管控的做法是基于现场作业全过程的管控,以生产现场作业流程为主线,抓住现场作业全过程管控的重点环节,运用隐患排查与反违章系统、移动终端、微信群等现代化科技手段,进行风险辨识、警示、统计、分析,... 详细信息

提出电厂生产现场实施现代化安全管控的做法是基于现场作业全过程的管控,以生产现场作业流程为主线,抓住现场作业全过程管控的重点环节,运用隐患排查与反违章系统、移动终端、微信群等现代化科技手段,进行风险辨识、警示、统计、分析,在风险与违章之间建立起高度映射关系,实现违章趋势预判预控,对违章心理进行干预和疏导,将无票工作等违章行为视为事故,实施作业现场安全监督“陪查”机制,确保生产现场作业风险可控、能控、在控,从而达到强化电厂本质安全的管理目标。

关键词：安全管控反违章系统违章趋势预判违章心理

在线全文

学校读者我要写书评

暂无评论

新型电力系统中火电机组运营智慧决策系统

热力发电 2024年第1期53卷 183-187页

作者：包英捷郝杰用余长开吴迅杨迎鸽梁宴萱刘海马世庆杨焰赖菲吴涛华能重庆珞璜发电有限责任公司重庆402283 西安热工研究院有限公司陕西西安710054

火电机组目前面对电力中长期合约市场、现货市场、辅助服务调峰调频市场,民用供热及工业供热等多种电热产品售卖途径,需要根据市场交易机制、运营成本及碳排放成本,在各种市场中优化分配有限的火电机组电热产品以获取最大利润。提出了... 详细信息

火电机组目前面对电力中长期合约市场、现货市场、辅助服务调峰调频市场,民用供热及工业供热等多种电热产品售卖途径,需要根据市场交易机制、运营成本及碳排放成本,在各种市场中优化分配有限的火电机组电热产品以获取最大利润。提出了火电机组运营智慧决策系统,采用通用开发平台,考虑了实时热电成本分摊、实时热电转换比、实时平衡利润比等,该智慧决策系统可以帮助火电企业实现实时的经营核算,并给出各级市场最优组合竞价策略及提供机组最佳运行方式。

关键词：新型电力系统运营智慧决策电力多级市场碳排放

维普期刊数据库博看期刊

Spontaneous firing properties of rat medial vestibular nucleus neurons in brain slices by infrared visual patch clamp technique

在线全文

学校读者我要写书评

暂无评论

Frontiers of Medicine 2008年第3期2卷 264-268页

作者： Jiao XIA Weijia KONG yun ZHU Yan ZHOU yu ZHANG changkai GUO Department of Otorhinolaryngology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Domestic application of infrared patch clamp techniques on brain slices is *** key of the tech-nique is to prepare high-quality brain *** present paper describes the preparation procedure of brainstem slices and the spontaneous firing properties of rat medial vestibular nucleus(MVN)*** infrared differ-ential interference contrast technique,neurons of rat MVN were visualized directly at the depth of 50–100 mm underneath the surface of *** activities of MVN neurons were recorded by the whole-cell patch clamp technique in artificial cerebrospinal fluid(ACSF)and low Ca^(2+)-high Mg^(2+) *** firing mode was more irregular and depressive in low Ca^(2+)-high Mg2+fluid than in *** to the averaged waveform of action potentials,cells were classified as the neurons with mono-phasic after-hyperpolarization potential(AHP),and the neurons with biphasic *** resting membrane potential(RMP),input resistance(Rin)and membrane capacitance(Cm)of neurons were recorded and com-pared between *** infrared videomicroscopy,patch clamp recordings could be made under direct obser-vation in freshly prepared brainstem *** discharge activities of MVN neurons were spontaneous and the fir-ing mode was modulated by extracellular calcium *** basic membrane properties of two types of neurons were not significantly different,while the differ-ences in waveform might play a role in the segregation between tonic and kinetic cells.

关键词： vestibular nucleus,medial brainstem slices infrared videomicroscopy whole-cell recording patch-clamp techniques spontaneous firing

Impact of Pd single-site coordination structure on catalytic performance for semihydrogenation of acetylene

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8243-8249页

作者： yu Zeng Minqi Xia Fujie Gao changkai Zhou Xueyi Cheng Liwei Liu Liu Jiao Qiang Wu Xizhang Wang Lijun Yang Yining Fan Zheng Hu Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Laboratory for Nanotechnology School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Semihydrogenation of trace acetylene in an ethylene gas stream is a vital step for the industrial production of polyethylene,in which Pd single-site catalysts(SSCs)have great ***,two Pd SSCs with different coordination structures are prepared on hierarchical nitrogen-doped carbon nanocages(hNCNC)by regulating the nitrogen species with or without using *** using dicyandiamide,the obtained Pd1-Ndicy/hNCNC SSC features the coordinated Pd by two pyridinic N and two pyrrolic N(PdN^(py)_(2)N^(pr)_(2)).Without using dicyandiamide,the obtained Pd1/hNCNC SSC features the coordinated Pd by pyridinic N and C(PdN^(py_(x)C_(4-x)),x=1-4).The former exhibits an 18-fold increase in catalytic activity compared to the *** results reveal the abundant unoccupied orbital states above the Fermi level of moiety,which can facilitate the activation of substrate molecules and dynamics of acetylene hydrogenation as supported by the combined theoretical and experimental *** addition,PdN^(py)_(2)N^(pr)_(2)the moiety presents a favorable desorption of ***,the Pd1-Ndicy/hNCNC SSC exhibits high C2H2 conversion(99%)and C2H4 selectivity(87%)at 160℃.This study demonstrates the impact of Pd single-site coordination structure on catalytic performance,which is significant for the rational design of advanced Pd SSCs on carbon-based supports.

关键词： coordination structure hierarchical nitrogen-doped carbon nanocages palladium semihydrogenation of acetylene singlesite catalysts

燃煤耦合污泥掺烧对SCR脱硝的性能影响及分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

锅炉技术 2024年第6期55卷 80-85页

作者：余长开吴迅鲍强王乐乐唐荣富孔凡海李超王军何川华能重庆珞璜发电有限责任公司重庆402283 苏州西热节能环保技术有限公司江苏苏州215153

对不同比例污泥掺烧后选择性催化还原(SCR)脱硝装置入口烟气成分进行了测试分析,并跟踪检测了污泥掺烧前后催化剂性能劣化趋势研究。结果表明:随着污泥掺烧比例的增加,SCR脱硝入口NO_(x)质量浓度升高,烟气流量增大,烟气温度下降,烟气含... 详细信息

对不同比例污泥掺烧后选择性催化还原(SCR)脱硝装置入口烟气成分进行了测试分析,并跟踪检测了污泥掺烧前后催化剂性能劣化趋势研究。结果表明:随着污泥掺烧比例的增加,SCR脱硝入口NO_(x)质量浓度升高,烟气流量增大,烟气温度下降,烟气含水量增大,飞灰浓度升高;在2.1%的污泥掺烧比例下,SCR脱硝催化剂的劣化速率与未掺烧时劣化速率相比,无明显异常;污泥高比例掺烧时,脱硝装置氨耗量及氨逃逸明显升高,要充分考虑脱硝入口烟气成分变化对脱硝装置整体性能的影响,优化催化剂选型及提高性能裕量。研究可为污泥掺烧机组SCR脱硝设备运行和管理提供参考及借鉴。

关键词：燃煤电厂污泥 SCR脱硝催化剂

An intelligent model with chaos and causality

在线全文

学校读者我要写书评

暂无评论

An intelligent model with chaos and causality

Idiopathic hypertrophic pachymeningitis with intracranial hypotension and distension of anterior internal vertebral venous plexus are associated with positional headaches but not sufficient in the diagnosis

第32届中国控制与决策会议

作者： Jiezhou yu Jun Meng changkai Sun Center for Data Mining and Systems Biology College of Electrical EngineeringZhejiang University Research & Educational Center for the Control Engineering of Translational Precision Medicine (R-ECCE-TPM) School of Biomedical EngineeringDalian University of Technology

The current machine learning method has the disadvantages of relying on data and statistics,and the model is ***,we propose a model based on *** model reconstructs the original system’s attractor equivalently and explores the causality so that it can achieve accurate prediction of complex systems without *** the same time,causality can explain the *** analyzing the properties of chaos,such a model is sensitive and adaptable to the change of conditions,and its learning process is more like humans’.This method works well and makes precise predictions in complex nonlinear *** think causality and chaotic theory play important parts in the proposed method and it may provide a new idea for current research.

关键词： Intelligence Chaos Causality Interpretable Prediction

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

World Journal of Neuroscience 2013年第3期3卷 154-156页

作者： Yongpeng yu changkai Sun Chen Zhang Hongqin Zhao Thian C. Ng Department of Neurology The Affiliated Hospital of Qingdao University Medical College Qingdao China Department of Neurology The Affiliated Wendeng Center Hospital of Weifang Medical College and Teaching Hospital of Dalian Medical University Wendeng China Liaoning Provincial Key Discipline of Physiology Institute of Brain Disorders and The Provincial Key Lab for Brain Disorders of Liaoning Province Dalian Medical University Dalian China Radiology Department National University of Singapore Singapore City Singapore

Idiopathic hypertrophic pachymeningitis (IHP) is a very infrequent disorder that causes a localized or diffuse thickening of the dura mater. The main clinical features of IHP at presentation include headache, cranial nerve involvement, ataxia, transient ischemic attacks (TIA) and seizures. Intracranial hypotension (ICH) and distension of anterior internal vertebral venous plexus (IVVP) have not previously been reported as the main clinical manifestations. We report a unique case with these characteristics as the main clinical findings, and investigate the internal relationship between these characteristics. This study highlights the heterogeneity of IHP, in terms of clinical, imaging, and pathological features. We recommend that dural biopsies should be considered in patients with clinically typical orthostatic headache and (or) diffuse pachymeningeal enhancement on magnetic resonance imaging (MRI) for the diagnosis of IHP.

关键词： Idiopathic Pachymeningitis Intracranial Hypotension