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随着煤气炉生产水平的提高,“三高一代一短”操作法也有了新的发展。文即通过作者近年实际考察了解到的一些厂家的情况,论述了目前煤气炉“三高一代一短”操作法的现状和成果。 相似文献
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随着煤气炉生产水平的提高,“三高一低一短’操作法也有了新的发展。该文即通过作者近年实际考察了解到的一些厂家的情况,论述了目前煤气炉“三高一低一短”操作法的现状和成果。 相似文献
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近年来清洗市场确属读者所说:“一是三高、二是三低”让人高兴又烦恼。“三高”:行业社会价高,国民经济贡献高、清洗需要数量高。“三低”:一般行业门槛低、地位低、群众舆论评论低。清洗行业存在着令人意想不到的优势和前途广阔的未来,但目前它的市场却恶性竞争,除正规、名牌企业外大部分处于无序、 相似文献
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水解反应对煤气中有机硫含量高低起着很重要的作用,加速有机硫水解的条件同“三高一短”的造气操作经验是一致的,坚持“三高一短”既可以增大发气量,同时,也有利于降低有机硫含量。 相似文献
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"两步法"生产高聚合度聚乙烯醇 总被引:1,自引:0,他引:1
聚乙烯醇生产过程中,当反应体系黏度达到一定值时,会产生“凝胶效应”,从而制约高聚合度产品的生产。通过对聚合率-聚合度-黏度的研究,提出了“两步法”加溶剂甲醇的生产工艺,解决了生产高聚合度聚乙烯醇的难题。 相似文献
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“2+3”驱油技术提高稀油油藏采收率实验研究 总被引:3,自引:0,他引:3
针对辽河油田某特定稀油油藏所面临的高含水、注水效果差,剩余油难以采出,常规工艺措施无法解决油层深部和平面矛盾等问题,提出了应用“2+3”驱油提高原油采收率技术来改善其开发效果。通过对该区块油藏地质特征、开发现状、油水性质分析,开展了适合于该区块油品性质和油藏特点的“2+3”驱油技术的研究。实验结果表明:所筛选确定出的“2+3”驱油体系具有较好的封堵效率和洗油效果,同时其注人性能、与地层的配伍性和稳定性均能满足现场试验要求;物模研究结果证明了“2+3”驱油技术可进一步提高开发中后期非均质稀油油藏的原油采收率,也可作为水驱油藏开发后期的接替技术而推广应用。 相似文献
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本文介绍用高温加工与高压加工相结合的方式,直接用谷物或面粉生产粉状淀粉粘合剂的工艺流程和原理。工艺简单,不耗费大量的化工原料,无“三废”问题。所得产品具有容易储存,便于运输和包装,使用方便,贮存期长等优点。 相似文献
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我国磷肥工业"十五"回顾和"十一五"展望 总被引:3,自引:1,他引:2
张永志 《硫磷设计与粉体工程》2007,(1):4-8
回顾了我国磷肥工业“十五”期间取得的显著进步,在提前、超额完成“十五’’计划的同时,国产磷肥的自给率已提高到96.4%,产业集中度提高、布局趋于合理,大型装置基本实现国产化,又给农民带来了很大实惠,并提出了存在的主要问题。展望“十一五”期间,分析了磷肥工业的发展思路,认为磷肥工业面临着机遇与挑战并存的新形势,是又一个发展较快的时期。 相似文献
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Toward rapid, "green", predictable microwave-assisted synthesis 总被引:6,自引:0,他引:6
Continuous and batch microwave reactors were constructed for efficient, "green" synthesis with low-boiling solvents at high temperature in closed vessels. Capabilities for rapid heating and cooling, concurrent heating and cooling, and differential heating facilitated novel chemical reactions and processes. Commercial microwave systems based on these developments are available. Times required for conventional reactions typically are decreased by 2-3 orders of magnitude. Green processes also have resulted through use of less or no catalyst, readily recyclable solvents, or media and yields that are often higher than normal. Complementary interactive software for calculating optimal conditions was developed. 相似文献
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High-speed photography (framing rate of 106 s-1 ) has been used to follow the formation and growth of damage in a number of oxide glasses when impacted with 1-mm-diameter steel balls at velocities of 150 m· s-1 or higher. Silicate, germanate, and borate glasses were studied in order to clarify the importance of "anomalous" vs "normal" elastic characteristics on their impact behavior. As expected it was found that glasses in these systems which are "anomalous" showed impact behavior which had earlier been seen in silica and borosilicate glass, whiie those glasses which are "normal" showed behavior similar to that shown by soda-lime silica glass. On the other hand, although B2 O3 has been characterized as "normal," its impact, as well as its quasi-static behavior, appears to put it in a class by itself. In this case, no cracking is observed during loading up to 150 m·s-1 , while radial and lateral cracking are seen during unloading. 相似文献
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随着“大数据”“互联网+”等信息化技术的进步,数据集中化处理、财务共享中心的建立逐渐替代模式化的人工处理,单纯以培养传统基础核算型会计人员的中职教育模式已经难于独立承担高素质技术技能会计人才培养的重任,在分析会计专业中高职衔接“3+2”人才培养模式存在问题的基础上,提出中高职衔接“3+X+2”人才培养模式实施建议,以实现职业教育资源统筹优化,中高职教育有效衔接。 相似文献