纸机流浆箱的发展综述

流浆箱是造纸机的关键部件,纸机车速的提高和市场对纸张质量的要求使得流浆箱在结构、性能和控制上都在不断地改变和提高。本文对流浆箱的发展历程进行了简单概述,重点介绍了敞开式流浆箱、气垫式流浆箱、水力式流浆箱、半水力式流浆箱的结构及其特点,并对未来流浆箱的发展趋势进行了展望。     

Master Jet-G流浆箱在高速新闻纸机上的应用

介绍了VOITH公司MasterJet-G高湍流式流浆箱的结构、主要功能以及流浆箱的设计参数、流浆箱的压头控制、流量控制、横幅定量控制及流浆箱的操作.     

PMP集团再次向印尼造纸厂成功交付Intelli-Jet V^TM型流浆箱

继2007年年初成功交付Intelli-Jet V^TM型流浆箱后,印尼某造纸厂决定再次选择PMP集团作为其后续流浆箱的供应商。值得一提的是,该厂此前在新的“4纸机底网上已经安装了PMP的Intelli-Jet V^TM型流浆箱。此次Intelli-Jet V^TM流浆箱全部采用不锈钢材料制成,流浆箱侧板宽度为4900mm,流浆箱装有浓度调节系统。     

流浆箱的设计与改造实例

流浆箱的发展是由造纸机车速不断提高推动的 ,从翻浆闸板式流浆箱 ,敞开式匀浆辊流浆箱 ,气垫匀浆辊流浆箱发展到当今水力式流浆箱都是为了适应纸机车速增加的要求。所以在选择流浆箱时 ,也要根据造纸机的速度要求进行。流浆箱的结构形式很多 ,但从功能划分 ,都是由三大部分组成 ,即布浆器、匀浆装置、喷浆装置。流浆箱设计也是围绕这三部分进行。目前流浆箱大致可分为二大类 :（１）匀浆辊流浆箱（敞开式、气垫式） ,见图１ ;（２）水力式流浆箱（满流式、半水力式） ,见图２。以上两大类流浆箱在解决布浆、匀浆、喷浆这三个问题都围绕着流…     

平底敞开式流浆箱浆料流动数学模型研究

近几年来,有的文化用纸的低速造纸机在流浆箱改造时,套用了通常用于车速较高的造纸机的流浆箱的元件(如阶梯扩散器、孔板配上消能棒和导流片,等等),但由于流浆箱和元件设计不够合理,主要参数选择不当,从而导致效果不佳,没有达到降低成纸横幅定量差和改进匀度的目的。国外对低速造纸机流浆箱的研究很少,流浆箱方面的研究工作大都集中在车速较高的造纸机流浆箱。例如瑞典KMW公司在研究KMW气垫流浆箱时对孔板的布浆整流性能进行了     

适用于中、低速造纸机的新型集流式飘片流浆箱结构及性能模拟试验研究

在分析了敞开式流浆箱、气垫式流浆箱和引进的用于大型高速造纸机的集流式飘片流浆箱的结构和性能的基础上,结合我国国情的需要,提出适用于中、低速造纸机的新型结构的集流式飘片流浆箱,进行试验模型的结构研究和设计以及模型的试验研究工作,并对其机理进行分析。结果表明:这种新型的集流式飘片流浆箱结构合理,有较佳的性能,适用于中、低车速的造纸机,对飘片流浆箱的机理也提出了一些新的看法,为我国新型集流式飘片流浆箱的研究提供理论依据和实用数据。     

造纸机流浆箱的功能及其最新进展

本文描述了造纸机流浆箱的基本功能。回顾了流浆箱的发展历史，对21世纪以来流浆箱的最新进展进行了介绍。     

MC稀释水型水力式流浆箱关键技术的开发

介绍了三大类型流浆箱之一的水力式流浆箱的特性,重点介绍了MC稀释水型水力式流浆箱及稀释水横幅定量调节的关键技术.     

满流式水力流浆箱

现有流浆箱分为敞开式流浆箱（适于车速250m／min以下）、气垫式流浆箱（250～450m／min）、水力式流浆箱（500m／min）、稀释水式流浆箱（500m／min以上）,但是以上这几种流浆箱都不是专门生产卫生纸用的。它们对车速和定量的变化较为敏感,而且不能生产11-17g／m^2以下的原纸。     

稀释水水力式流浆箱结构与控制

介绍了Metso公司OptiFlo流浆箱和Voith公司MasterJet流浆箱的结构及其构件的功能与区别,在分析稀释水水力式流浆箱控制要点及难点的基础上,提出了基于PLC稀释水水力式流浆箱本体控制系统及其横幅定量控制系统的控制方案。     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of     

The Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the latest scientific     

Contamination of animal feed and food from animal origin with mineral oil hydrocarbons

Oils and fats used for the production of animal feed can become contaminated with mineral oil material originating from gas oils (C₁₈-C₃₅) or synthetic oils (poly alpha olefins, C₂₅ to beyond C₄₅). An important cause is assumed to be the discharge of waste oils, such as motor oil and hydraulic oils. Mineral oil material was analysed by on-line LC-GC-FID directly in the fat or in a raw extract from animal feed or foodstuffs. In Switzerland in summer/autumn 1999 concentrations in oils and fats for feed production were often found to be between 100 and 1000mg/kg. In the feeds, the average concentration was around 100mg/kg with values ranging up to a maximum of 1000mg/kg; few samples were free of contamination. In animal body fat, the average concentration determined in summer 1999 was 25mg/kg, with a maximum of 150mg/kg, although in samples from December 1999, contamination was substantially lower. In the fat phase of eggs, the average concentration was 30mg/kg, with a maximum of 80mg/kg. Paraffin oil is used for feed production, which may account for part of the contamination problem (e.g. eggs).