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制盐企业普遍为热电联产,即锅炉产生的蒸汽,经汽轮发电机做功后的抽汽或背压排汽,供制盐生产,供汽的连续性和稳定性直接影响制盐产量。随着节能减排要求的不断提高及煤炭资源价格的上涨,如何充分发挥热电联产的优势成为减少企业成本和提高企业综合竞争力的关键。 相似文献
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随着我国科技的不断发展和改革,很多热电联产产业也得到了迅速发展。而当下随着热电联产产业的发展,人们对其要求也越来越高,如何才能更好的使热电技术得到优化,成了我国最为主要的工作内容之一。文章主要介绍了热电联产产业的发展现状以及其热电联产的主要优势,并对其未来发展趋势进行分析,希望这些介意可以给我国的热电联产产业的发展带来一定的帮助。 相似文献
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林间剩余物热电联产综合开发模式研究 总被引:7,自引:1,他引:7
研究将清育林和间伐剩余物初加工成方便在林间运输的形态,在林间采用科学合理的载运工具,将这些原料运到林场进行热电联产综合开发,加工成方便运输的发电用原料。在林场筹建热电联产综合开发发电成套设施,将林场有限发电机组所发的电能通过附机和网络配套设备送到国电电网创收,产生的热能供应林场使用,为天保林区提供一条创收之路。林间清育林和间伐及伐区剩余物占森林总资源的80~90%,没有高效利用这些资源,森林资源的高效利用和生物能源的开发就是一句空话。以林场为基地进行热电联产综合开发,以电能的形式输送这些资源,彻底解决清育林和间伐资源的高效利用问题,同时解决资源运输的道路、装备和费用等问题,提高清育林和间伐剩余物应用的经济效益。提出以热电联产综合开发效益促进清林和间伐,靠经济杠杆推进清林和促进天然林保护工程,加快我国森林资源恢复。 相似文献
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对加拿大某硫酸盐法制浆工厂将热电联产与其他一些能够影响发电能力的措施相结合进行生产的集成应用进行了研究。这些能够影响发电能力的方法包括减压阀的去除,蒸汽压力水平和生物质锅炉生产能力的调节,以及生产过程中能耗的降低。采用CADSIM Plus软件来模拟热电联产车间的工作情况,同时考虑到了车间启动阶段的动态特性和对发电量的影响。研究表明,用涡轮机代替减压阀,可以产生14.4MW的电量。通过应用热电联产机组和相应的工艺措施,在回收利用了23%的内部能量的同时,还可以停用现存的燃油锅炉,并产生44.5MW的电量。因此,在制浆造纸工业中实施热电联产,不仅技术上可行,而且能够带来显著的经济效益。研究中还对此项目进行了成本分析,结果表明,其投资回收期不足1年。 相似文献
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热电联产是一种不仅仅能满足工业用汽,还能满足民用采暖和热水供应的供热方式,并能够有效的实现节约能源和保护环境工程措施。文章针对热电联产工程中电气系统的节能设计,分别从电气主接线,厂用设备选型和灯具及布灯方案这三个方面分别做了详细的叙述。 相似文献
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介绍云景林纸热电联产的应用情况,以及国内外一些制浆企业的热电联产情况,并对热电联产在制浆生产循环经济中的作用和应用发展方向进行了探讨. 相似文献
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Figueroa-González I Quijano G Ramírez G Cruz-Guerrero A 《Journal of the science of food and agriculture》2011,91(8):1341-1348
Owing to their health benefits, probiotics and prebiotics are nowadays widely used in yogurts and fermented milks, which are leader products of functional foods worldwide. The world market for functional foods has grown rapidly in the last three decades, with an estimated size in 2003 of ca US$ 33 billion, while the European market estimation exceeded US$ 2 billion in the same year. However, the production of probiotics and prebiotics at industrial scale faces several challenges, including the search for economical and abundant raw materials for prebiotic production, the low-cost production of probiotics and the improvement of probiotic viability after storage or during the manufacturing process of the functional food. In this review, functional foods based on probiotics and prebiotics are introduced as a key biotechnological field with tremendous potential for innovation. A concise state of the art addressing the fundamentals and challenges for the development of new probiotic- and prebiotic-based foods is presented, the niches for future research being clearly identified and discussed. 相似文献
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常用消毒灭菌法及其机理与应用 总被引:3,自引:0,他引:3
介绍了采用消毒灭菌方法,有加热消毒法,紫外线辐射法和化学药剂消毒法。常用化学药剂有醛类、含氯消毒剂、醇类消毒剂以及高锰酸钾、生石灰等,阐释了消毒与灭菌两个概念的区别。 相似文献
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The objectives of the current study were to investigate the relationship between body condition score (BCS) and dairy form and changes in genetic parameters for BCS and dairy form within and across lactations and age. Body condition score and dairy form were obtained from the Holstein Association USA, Inc. Records were edited to include those cows classified between 24 and 60 mo of age and between 0 and 335 d in milk (DIM). A minimum of 20 daughters per sire and 15 cows per herd-classification visit were required. The dataset consisted of 135,178 records from 119,215 cows. Repeatability, multiple trait, and random regression models were used to analyze the data. All models included fixed effects for herd-classification visit, age within lactations 1, 2, and 3 or higher, and 5th-order polynomials for DIM. Random effects included sire and permanent environment for all models. Random regression models included age at classification nested within sire or DIM and lactation number nested within sire. Genetic variance for both BCS and dairy form was lowest in early lactation and highest in midlactation. Genetic correlations within and across lactations were high. The genetic correlation between DIM 0 in lactation 1 and DIM 305 in lactation 3 was estimated to be 0.77 for BCS and 0.60 for dairy form. The genetic correlation estimate between 30 mo of age at classification and 50 mo of age at classification was 0.94 for both dairy form and BCS. The repeatability models appeared to generate accurate evaluations for BCS or dairy form at all ages and stages of lactation. 相似文献
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海洋动植物油脂的开发与利用 总被引:1,自引:0,他引:1
中国有广阔的海洋 ,丰富的海洋资源 ,海洋动植物油脂是 2 1世纪中国油脂工业的新油源。通过对海洋动植物油脂资源的调查 ,分析了海洋动植物油脂结构、成分、氧化与抗氧化及其营养价值 ,对海洋动植物油脂在基因改良、超细微保健以及海洋水产品综合利用方面进行了探讨 ,并对海洋动植物油脂开发技术进行了探讨 相似文献
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