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化工设备积垢是行业内一个重要的研究课题。到目前为止,以防为主,以除为辅仍是处理积垢问题的基本原则。甘蔗糖蜜酒精蒸馏设备积垢因其原料、工艺及工艺条件的原因,有其自身的特殊性。文中以积垢化学成分及其在生产系统中存在的相互平衡和相互转化关系为基础,抓住主要矛盾,提出一种预防甘蔗糖蜜酒精蒸馏设备积垢的有效方法。解决了多年未决的一大生产难题。 相似文献
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化工设备积垢是行业内一个重要的研究课题.到目前为止,"以防为主,以除为辅"仍是处理积垢问题的基本原则.甘蔗糖蜜酒精蒸馏设备积垢因其原料、工艺及工艺条件的原因,有其自身的特殊性.文中以积垢化学成分及其在生产系统中存在的相互平衡和相互转化关系为基础,抓住主要矛盾,提出一种预防甘蔗糖蜜酒精蒸馏设备积垢的有效方法.解决了多年未决的一大生产难题. 相似文献
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化工设备积垢是化工领域长期研究的课题。笔者在对甘蔗糖蜜酒精蒸馏设备积垢进行化学成分分析和现场调查的基础上,根据积垢物质在物料流动方向上的成分变化规律,从理论上对积垢物质在生产系统中的运行和运行机制进行了分析。 相似文献
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把甘蔗糖蜜酒精蒸馏废液浓缩后加以利用,这是目前流行的、被认为是最彻底的治理;而浓缩液用作燃料,这可回收热能和钾灰,是立足于厂内的利用和治理。指出甘蔗糖蜜酒精蒸馏废液浓缩燃烧法的使用要求和生产型式;较详细地介绍了该法的蒸发浓缩系统和燃烧系统。 相似文献
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酒精厂每生产1升酒精,可产生蒸馏废液10~15升;玉米的蒸馏液的 BOD 值为15,000~25,000ppm,纸浆和糖蜜的 BOD 值更高。蒸馏废液的特性以糖蜜和玉米为原料生产酒精产生的蒸馏废液的代表性组成如表1。甘蔗和甜菜汁的废液营养成分的组成和糖蜜的废液相似,但浓度低。此外马铃薯和玉米淀粉的废液营养价值不高。 相似文献
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糖蜜酒精废液资源化治理的回顾与展望 总被引:1,自引:0,他引:1
甘蔗糖蜜是酒精生产的优质原料,但蒸馏酒精后排出的废液有机物含量高,属高浓度有机污染物。近20年糖厂附属的酒精厂均因其污染问题影响生产甚至停产。为了使酒精产业能更好发展,本文搜集近年行之有效的废液治理方法并分析其优缺点供企业选择,并提出作者认为较佳的方法。 相似文献
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报道了高产酿酒酵母(Saccharomycescerevisiae)菌株MF1001的甘蔗糖蜜酒精发酵特性及利用该菌株进行甘蔗糖蜜高浓度酒精发酵的结果,结果表明,20°Bx糖蜜对菌株的酒精发酵没影响,发酵的适宜温度为30℃,pH4.0的发酵效果明显优于pH3.80。按目前甘蔗糖蜜酒精生产的发酵工艺,用20°Bx糖蜜培养基培养菌株,制备种子液,然后将种子液与55°Bx的糖蜜培养基1:1混合进行中试发酵,发酵48~52h的醪液酒精含量达到了13.3~13.4%(V/V)。发酵结束时醪液可发酵残糖含量为0.64~1.02%。将该菌株用于5万吨规模的甘蔗糖蜜酒精发酵生产,全年生产的成熟醪酒精含量维持在12.5%(V/V)以上,发酵效率维持在91~93%,生产吨酒精的废液排放维持在8吨左右,生产效益显著。 相似文献
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有效解决糖蜜酒精生产粗馏塔结垢问题 总被引:2,自引:1,他引:1
甘蔗糖厂利用废蜜生产酒精,近年来,由于桔水成分发生许多变化,设备结垢,特别是蒸馏调和结垢导致频繁停机,困扰众多厂家。本文在详细分析桔水羞分基础上,论述了调整酒精生产工艺,提高甘蔗质量,严格制糖红质量管理,从根本上解决了设备结垢问题,具有其它方法无法比拟的优势。 相似文献
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O. ORTIZ-ZAMORA R. CORTÉS-GARCÍA M. RAMÍREZ-LEPE J. GÓMEZ-RODRÍGUEZ M.G. AGUILAR-USCANGA 《Journal of food process engineering》2009,32(5):775-786
In Mexican alcohol distilleries using sugarcane molasses, one reason for low alcoholic fermentation efficiency is the use of inferior yeast cultures. The objective of the present study was to isolate and select yeast strains from alcoholic fermentations of natural sources (sugarcane molasses, grape juice, cane juice and pineapple) from Veracruz city market and Mexican distilleries, and to evaluate their performance under laboratory conditions in an effort to select superior strains for industrial fermentations. Ethanol production, glucose composition, growth rate, "Killer" activity, ethanol and glucose tolerance of the most promising strains were monitored on synthetic and molasses media. A total of 112 yeast strains were isolated by their capacity to produce ethanol, and from these, only 58 were selected on the basis of best ethanol theoretical yields (88–96%). These strains were exposed several times to high concentrations of glucose and ethanol in order to select ethanol- and glucose-tolerant yeast; 10 were obtained that adapted best to these conditions and that showed "Killer" activity. Of these strains, U3-11, M11, JC10 and U2-10 (obtained from grape juice, sugarcane molasses and cane juice) demonstrated the highest adaptation to both ethanol (5–7% w/v) and glucose (20% w/v). The maximum yield obtained was 0.46 g/g (90% theoretical yield) in a 20-L bioreactor with cane molasses under nonsterile conditions.
The selected yeasts could be introduced into industrial processes in Mexican distilleries using sugarcane molasses in order to improve productivity and diminish contamination problems. 相似文献
PRACTICAL APPLICATIONS
The selected yeasts could be introduced into industrial processes in Mexican distilleries using sugarcane molasses in order to improve productivity and diminish contamination problems. 相似文献
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L.M.M. Jorge A.R. Righetto P.A. Polli O.A.A. Santos R. Maciel Filho 《Journal of food engineering》2010
The production of sugar and alcohol is the main objective of the sugarcane processing industry. The evaporation of sugarcane juice has a high energetic cost and is usually performed in multiple-effect evaporators. The loss of performance during operation due to fouling makes the process more complex. In this study, modeling, simulation, validation, and analysis were performed for a sugarcane juice industrial evaporation system (IES) composed of a falling film evaporator followed by three short vertical-tube evaporators arranged in parallel. The IES model was developed using a commercial process simulator and validated with data from the plant. The IES had marked performance losses in the first 14 days of operation, mainly due to fouling in the first effect, with a 30% decrease in the evaporation rate. 相似文献
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糖蜜原料生产酒精采用酸化法清净糖蜜后进行发酵酒精,在生产实践证明是行之有效的方法,但对其机理作用与优点加以说明的相关报道较少,以致碰到生产出现不正常现象时就归咎于酸化。为增加企业对酸化法的了解,本文从生物、化学、物理方面剖析各工序的作用进行讨论和提出建议。 相似文献
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