共查询到20条相似文献,搜索用时 140 毫秒
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中国是世界上用非木材纤维原料制浆造纸历史最悠久的国家。为了提高草类纤维制浆的质量,草类原料的备料工艺流程与设备在国内已引起高度重视,并进行了技术研究和讨论。草类原料备料工艺流程及设备的分类与比较如下。 1.干法备料及设备我国传统的干法备料设备,主要由切草机、除尘机、输送机、预浸机等设备组成,规格有8t/h、5t/h、3t/h三个系列。目前,在我国应用比较普遍的是8t/h 相似文献
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非木材纤维原料湿法备料的进一步探讨 总被引:1,自引:0,他引:1
湿法备料是一种比较先进有效的工艺过程,它不仅能有效地除去原料中的杂物,还是一个完整的纤维预处理过程,因此最适合于外来杂物及无用或有害成份较多的非木纤维。本文分析与比较了当前国内外常见的非木材纤维湿法备料过程,并对我国常用的几种非木纤维制浆原料的湿法备料方法做了较深入的探讨。 相似文献
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麦草湿法备料连续蒸煮工艺剖析 总被引:1,自引:0,他引:1
麦草湿法备料连续蒸煮工艺剖析程绪旋王庆华钱荣树(江苏泰州造纸厂225300)关键词湿法备料连续蒸煮麦草浆料质量除髓机洗涤机我厂有新、老两套制浆系统。老系统采用干法备料、蒸球蒸煮。新系统引用美国Peadco公司提供的湿法备料和双喷放连续蒸煮技术,纤维... 相似文献
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采用湿法备料和横管连蒸生产碱法麦草浆的实践陈文学江苏省泰州造纸厂225300关键词湿法备料,连续蒸煮,麦草1前它为了工厂上规模,品种上档次,提高产品质量,增加经济效益,1988年底我厂同美国Peadco公司签订了合同,采用该公司的制浆工艺技术,从备料... 相似文献
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通过小型试验及生产实践得出,在干湿法备料中采用脱水螺旋代替除髓机起脱水作用,不但能保证连续蒸煮的需要,而且能提高浆料的质量、降低消耗,取得良好的经济效益。 相似文献
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半精纺工艺流程及纺纱设备的选用 总被引:1,自引:0,他引:1
为更好地应用半精纺工艺生产色纺纱,对几种不同组合形式的半精纺工艺流程进行分析对比,总结了其优缺点。通过试验,分析主要生产设备的结构性能和形式对半制品或成纱质量的影响,提出在应用不同生产工艺流程和设备过程中应注意的问题,并指出半精纺纺纱工艺对纺纱专件、生产管理等方面的要求。同时,还介绍了新型纺纱技术在改造传统环锭细纱机及开发半精纺新产品方面的应用。可为合理选用半精纺设备和进一步开发纺纱设备提供参考。 相似文献
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简要论述了湿浆板系统的发展过程和状况,以及促进湿浆板系统不断发展提高的主要问题和因素。扼要介绍了我国第一套现代湿浆板系统的主要技术特性、结构特点和工厂实际运行情况;提出了该湿浆板系统运行中应该引起重视的工艺和操作要求。 相似文献
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Mullins CR Grigsby KN Anderson DE Titgemeyer EC Bradford BJ 《Journal of dairy science》2010,93(11):5329-5337
An experiment was conducted to evaluate the effects of increasing dietary inclusion rates of wet corn gluten feed (WCGF; Sweet Bran; Cargill Inc., Blair, NE) on milk production and rumen parameters. Four primiparous and 4 multiparous ruminally cannulated Holstein cows averaging 90 ± 13 d in milk (mean ± SD) were randomly assigned to 1 of 4 sequences in a replicated 4 × 4 Latin square experiment with 28-d periods. Treatments were diets containing 0, 11, 23, and 34% WCGF on a dry matter basis; alfalfa hay, corn silage, corn grain, soybean meal, expeller soybean meal, and mineral supplements were varied to maintain similar nutrient concentrations across diets. Performance and measures of ruminal fermentation were monitored. Linear and quadratic effects of increasing WCGF inclusion rate were assessed using mixed-model analysis. Increasing dietary WCGF linearly increased dry matter intake (26.7, 25.9, 29.3, and 29.7 kg/d for 0, 11, 23, and 34% WCGF, respectively) and milk production (36.8, 37.0, 40.1, and 38.9 kg/d). Concentrations of milk components did not differ among treatments; however, protein and lactose yields increased linearly and fat yield tended to increase linearly when more WCGF was fed. This led to greater production of energy-corrected milk (38.2, 38.8, 41.7, and 40.4 kg/d) and solids-corrected milk (35.2, 35.7, 38.5, and 37.2 kg/d), but efficiency of production linearly decreased. Increased WCGF in the diet tended to linearly decrease ruminal pH (6.18, 6.12, 6.14, and 5.91), possibly because mean particle size was below typical recommendations for all diets, and diets with greater proportions of WCGF had a smaller mean particle size. Ruminal acetate concentration decreased linearly and propionate increased linearly as WCGF inclusion rate increased. Treatments had a quadratic effect on ammonia concentration, with greater concentrations for the 0 and 34% WCGF diets. In situ digestibility of soybean hulls showed a significant diet-by-time interaction, and increasing dietary levels of WCGF linearly decreased in situ neutral detergent fiber disappearance at 24 h. Change in body condition score increased linearly with increasing WCGF inclusion rate. Results indicate that adding WCGF to dairy rations can increase energy-corrected milk yield, and this increase appears to be driven, at least in part, by an increase in dry matter intake. 相似文献