金属钠生产中电解槽循环水冷却塔改造

内蒙古兰太实业股份有限公司1万t/a金属钠生产所需电解槽必须采用冷却水进行循环冷却降温,为了防止循环水管道腐蚀,确保电解槽的安全稳定运行,对循环水的水质要求较高,需要采用纯水。原有冷却塔为旧式敞开式填料冷却塔,设备老化严重,跑水量大,增加了纯水制造成本,造成水资源浪费,且敞开式的塔由于周边风沙大造成水质严重污染,泥沙经常堵塞电解槽循环水管道,也增加了工人劳动强度及清理费用。针对这一系列问题,公司建议将开式冷却塔进行改造,采用闭式冷却塔,使循环水在冷却塔换热管内循环,这样不仅避免了纯水的浪费,且大大降低了纯水的制造成本,还防止泥沙及其他杂质进入循环水系统污染水质,解决了管道堵塞的问题,降低了人员劳动强度和清理成本。     

循环水设备节能技术改造

节能减排是我国一项基本国策.节约能源、降低消耗是企业生存发展的必由之路.安徽德邦化工有限公司循环水装置有二次循环水及三次循环水装置,冷却循环水系统采用开式机械循环,在标准工况下,来自冷水池的低温冷却水由该系统的冷却循环水泵送至生产装置各个区经换热器换热,换热后的高温冷却水由系统压至冷却塔散热冷却,经冷却塔散热冷却后的低温冷却水回落至冷水池,如此循环往复,水损耗由补水系统补给.通过专业的节能服务公司对循环水系统进行检测、分析、研究,挖掘系统装置设备节能技改潜力,分别对三次水泵进行节能技术改造及二次水冷却塔水轮机改造.     

浅析炼油厂循环水处理工艺的实际应用

工业循环水在生产运行过程中通常是为了达到节水的目的,提高水的重复利用率。工业系统,依靠水质稳定技术将处理中的水作循环冷却处理,大大减少了对水资源的浪费,一定程度上缓解了水资源的紧缺,促进了经济的可持续发展。针对炼油厂循环水系统而言,常常面临部分设备老化的问题,生产运行中容易发生泄漏,水和油的相互渗透必然造成水质和油质的污染,影响正常的生产效率。同时新鲜水用量的增加导致循环水的处理费用增加,严重制约了企业的发展。因此,提高炼油厂的循环水处理技术势在必行,循环水处理的工艺技术的开发是炼油企业发展的迫切需要解决的问题。     

油脂浸出工艺中冷却循环水系统的设计与应用

简述了油脂浸出工艺冷却循环水系统中冷却水量、循环水池的计算与设计过程,并对建设过程中应该注意的问题提出具体方案,使设计、建设与后续实际生产能更好地结合起来。     

变压器强迫油循环水冷系统事故简析

主变压器是变电站最重要的设备之一,其运行的稳定性决定了变电站的正常运行。目前,大型变压器大多采用风冷、水冷等方式,地下变电站的主变压器主要采用了强迫油循环水冷却的冷却方式,文章简析了地下变电站某次变压器强迫油循环水冷系统事故的过程、原因,并提出优化改造建议,对今后强迫油循环水冷系统运行维护、设计改造有重要意义。     

循环冷却水系统节能优化的探讨

循环水与冰水是生物化工企业生产所必需的两种能源,并且其用于生产的运行方式也基本相同。两种能源的区别在于冰水的生产制造成本大大高于循环水,利用现有环境条件优化循环冷却水系统,将生产中的冰制造成本降至接近循环水的生产成本,以节能降耗。     

各国印刷专利文摘

专利名称:凹版印刷机制动冷却用循环水系统 专利申请号:CN200920114505.5 公开号:CN201385457 申请日:2009.02.26 公开日:2010.01.20 申请人:杭州添丽装饰纸有限公司 本实用新型涉及一种凹版印刷机的制动冷却循环水系统.所要解决的技术问题是提供的系统应能在保证印刷机正常工作的前提下实现冷却水的循环再利用,并具有节约水资源、提高冷却效果、降低运行成本的特点.本实用新型提供的技术方案是:凹版印刷机制动冷却用循环水系统,该系统包括进水管和出水管,所有的制动器均并联接入进水管与出水管之间;所述的出水管还接通一蓄水池以便使出水管中的回水流入该池,所述的进水管又通过一水泵接通该蓄水池,以抽取该蓄水池中的水作为冷却用水.所述的蓄水池中设有过滤装置,以便对出水管中的回水进行过滤.所述的蓄水池还接有一装有阀门的进水管,以补充蓄水池内的水.     

无填料喷雾冷却塔在糖厂循环水中的应用

无填料喷雾冷却塔是一种新型的工业循环水降温的设备,通过对比监测证明,无填料喷雾冷却塔非常适用于糖厂循环水冷却处理,是糖厂取代喷水冷却池最好的循环水降温设备。     

啤酒厂循环冷却水处理技术研究

啤酒厂循环冷却水占啤酒工业生产用水的比例很大.冷却水长期循环使用后,必然会带来结垢、腐蚀和微生物滋生问题.解决好这三个问题,才能稳定生产、节约资源与能源,从而减少环境污染,提高经济效益.通过对冷却水处理技术进行研究和探讨,制定经济、实用、可行的循环水处理方案,可以实现循环冷却水系统的经济合理运行.     

火力发电厂循环水系统变频节能优化分析

随着社会经济的不断发展,为了能够满足社会电力能源的供应,火力发电厂的建设规模不断增加,而这也使得其正常运转时耗费大量的能源,而循环水系统则是其中一个重要的耗能设备。循环水系统工作时会消耗大量的电力能源,因此必须要将其进行合理的优化设计,使其能够在工作时发挥自身的作用,在闲置时,降低自身能耗的消耗,从而帮助火力发电厂提高经济效益,并且降低环境污染问题。因此,文章通过对循环水系统的运行方式进行分析,然后找出其需要进行优化的位置,并进行相应的解决,希望为火力发电厂的运行降低成本。     

蛋白质水解度测定方法综述

对目前国内外常用的蛋白质水解度测定方法进行了综述，其中pH—state方法是通过滴定水解过程中释放的质子测定DH；OPA、TNBS及国内常用的水合茚三酮和甲醛等测定方法是利用游离氨基的反应测定DH。     

SEROLOGIC IDENTIFICATION OF SPECIES OF ORIGIN OF SAUSAGE MEATS

SUMMARY: A partially purified immunoglobulin G (lgG) solution prepared from the serum of species to be tested was heated to the specifications for sausages. The resulting supernatant fluid was decanted and the precipitate washed with saline and used to immunize rabbits. The supernatant fluid was used to sensitize tanned sheep red blood cells. The immune serum was rendered monospecific by absorptions with heterologous, heated lgG precipitates. A sample of monospecific immune serum was absorbed with a washed homogenate of sausage. Aliquots of the monospecific immune serum, both untreated and sausage absorbed, were tested with cells sensitized with the homologous heated lgG supematant fluid. A significant reduction of titer by sausage absorption indicated that the sausages contained the meat homologous to the immune serum.     

BASIS OF STABILITY OF AMINE SALTS OF LINOLEIC ACID

SUMMARY— The mechanism and generality of the known stabilization against autoxidation conferred on linoleic acid by certain basic amino acids, such as lysine and arginine, was investigated. Basic amino acids were the only class of compounds found to confer the effect. However, the smallest basic amino acid, 2,3-diaminopropionic acid, was not effective, nor was αβω-diaminc acid, 3,6-diaminohexanoic acid, although a simple isomer of lysine. The stabilization was observed only in the solid phase. Inclusion of sodium chloride in the solid matrix was deleterious to the effect. A large number of physical and chemical observations were made and correlated but it has not been possible to draw detailed conclusions about the mechanism of stabilization, nor can a detailed structure of the stabilized complex be suggested. The cause of the phenomenon appears to be closely associated with the physical arrangement of the ions in the crystal lattice.     

聚多元羧酸盐的合成及应用

研究了聚多元羧酸盐的合成方法及反应机理,将其应用于洗涤剂和PVC制品中分别代替三聚磷酸钠和邻苯二甲酸二丁酯,证明有良好效果。     

百年风尚

一场流光溢彩、赏心悦目的展览,一段百年风尚演进的传奇旅程,一次东西方文化艺术的完美对话。2013年9月13日,“博萃臻艺一中西方珍宝艺术展”在辽宁省博物馆举行了隆重的开幕仪式,法兰西共和国驻华大使白林女士、辽宁省文物局局长丁辉先生、辽宁省博物馆馆长马宝杰先生、卡地亚全球总裁兼首席执行官邓阁仕先生、卡地亚区域行政总裁（北亚洲）陆慧全先生、卡地亚中国区首席执行官陆意斯先生、辽宁省文物店总经理张春鹰先生,以及众多文化界与文博界的贵宾齐聚一堂,共同见证了这场文化艺术盛事。     

STABILITY OF AQUEOUS EMULSIONS OF THE ESSENTIAL OIL OF HOPS

Hop oil emulsions prepared from different varieties of hops have been found to exhibit enhanced physical stability on the addition of blends of the emulsifiers Span 20/Tween 80 or Span 60/Tween 60. Examination of the particle size and volume distributions of an emulsion by use of a Coulter Counter was found to be an excellent method of monitoring its stability. An indication as to the relative efficiency of emulsifiers can be obtained from Coulter Counter measurements on hop oil emulsions after storage for 4 days. The use of an ultracentrifuge provies a rapid means of testing emulsion stability and hence the effectiveness of emulsion stabilizers.     

DEVELOPMENT OF CHAINS OF CELLS OF SACCHAROMYCES CEREVISIAE DURING FERMENTATION

The lengths of chains of cells of Saccharomyces cerevisiae were studied during fermentation. Pitching yeast generally contained about half of the total number of cells as two-celled chains. The chain lengths varied during the subsequent fermentation and the variations were characteristic of the strain. Electronic counting assessments of chain length were unreliable.     

ANALYTICAL CHARACTERIZATION OF THE PRODUCTS OF NONENZYMATIC GLYCOSYLATION OF LYSOZYME

The quantitative analysis of the reaction products of the water activity dependent nonenzymatic glycosylation of lysozyme was not straightforward. Difficulties arose in the determination of the number of bound glucose molecules because glycosylation leads to glucose mediated protein aggregation, and the likely presence of a mixture of relatively labile Schiff-base intermediates, and the more stable ketoamine products generated by Amadori rearrangement. Polyacrylamide gel electrophoresis was used to monitor protein aggregation; periodate oxidation, nuclear magnetic resonance (NMR), and oxalic acid hydrolysis combined with HPLC, emerged as the most promising methods to quantitate the degree of glycosylation. Possible interpretations are advanced to explain the apparent discrepancies in degree of glycosylation suggested by the different analytical methods evaluated.     

EFFECTS OF TYPES OF FAT AND OF RATES AND TEMPERATURES OF COMMINUTION ON DISPERSION OF LIPIDS IN FRANKFURTERS

ABSTRACT— The effect of time, temperature and rpm of comminution of emulsions was determined on the dispersion of approximately 25% of beef fat, pork fat or cottonseed oil in frankfurters. The numbers of lipid particles 5 μ or less in diameter increased in frankfurters containing either beef or pork fat as comminution was continued to higher temperatures, with pork fat dispersed more thoroughly. Fat tended to separate from frankfurters containing beef fat in particles 200 μ or more in diameter. In contrast, no specific degree of dispersion of particles 5 μ or less in diameter consistently indicated emulsion stability, or its lack. Increased rpm during comminution produced an increased dispersion of beef or pork fat. Under the same conditions pork fat was dispersed more finely than beef fat. Dispersion of cottonseed oil produced finely dispersed particles beyond the resolution of light microscopy, as was confirmed by electron microscopy which showed a substantial number of particles to be less than 1 μ in diameter.     

矩阵乘积的行式,列式

给出了ｍ×ｍ矩阵与ｍ×ｎ矩阵的行（列）式的表达式．若Ａ＝ａ１１ａ１２…ａ１ｍａ２１ａ２２…ａ２ｍ……ａｍ１ａｍ２…ａｍｍＢ＝ｂ１１ｂ１２…ｂ１ｎｂ２１ｂ２２…ｂ２ｎ……ｂｍ１ｂｍ２…ｂｍｎ分别是ｍ×ｍ，ｍ×ｎ矩阵，则｜Ａ｜｜Ｂ｜＝｜ＡＢ｜＋∑ｉ１＜ｉ２＜…＜ｉｔｊ１＜ｊ２＜…＜ｊｔ１≤ｔ≤ｍｎ－ｔ≥ｍＮＢｉ１ｉ２…ｉｔｊ１ｊ２…ｊｔＮＡＢ１…ｍ（－１）ｓｔ＋１ｊｔ＋１…（－１）ｓｎｊｎ其中ｉ１，ｉ２，…，ｉｔ是１，２，…，ｍ中ｔ个数码；ｊ１，ｊ２，…，ｊｔ，ｊｔ＋１，…，ｊｎ是１，２，…，ｎ的一个排列；ｓｒ＝π（ｊ１，ｊ２，…，ｊｔ，ｊｒ）（ｒ＝１，２，…，ｎ）是排列ｊ１，ｊ２，…，ｊｔ，ｊｒ的反序数．