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本文建立了燃煤玻璃马蹄焰窑炉局部富氧燃烧与不采用富氧燃烧数学模型,对不同富氧空气下燃烧温度的影响进行了计算机模拟,对模拟结果进行了回归分析,对比了采用富氧燃烧与不采用富氧燃烧对节能效果的影响,分析了在小炉底板上面通富氧空气产生的效果.对燃煤玻璃马蹄焰窑炉富氧燃烧提出了建设性的意见. 相似文献
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温和型香皂——富脂皂的生产 总被引:1,自引:0,他引:1
本文简要介绍了富脂香皂的定义及国内外生产富脂皂的几种方法,并从油脂配方、皂基制备、皂基干燥及富脂剂加入、杨用的辅料和富脂皂性能评价五方面对富脂皂的生产进行了介绍。 相似文献
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二氧化碳捕集与利用是全球学术界和工业界关注的热点,也是燃烧科学技术领域的前沿和难点。固体燃料的流化床富氧燃烧耦合了流化床燃烧和富氧燃烧的诸多优点,是最具工业应用前景的燃烧中碳捕集技术之一。为更全面把握该领域最新动态,对近年来流化床富氧燃烧的研究进行了系统梳理,在简述富氧燃烧基本技术原理基础上,分析了国内外的研究动态,总结了主要研究进展,包括单一燃料流化床富氧燃烧、混合燃料流化床富氧燃烧、加压流化床富氧燃烧和新型流化床富氧燃烧,并探讨了固体燃料流化床富氧燃烧技术将来发展趋势和研究重点。 相似文献
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固体燃料流化床富氧燃烧的研究动态与进展 总被引:1,自引:0,他引:1
二氧化碳捕集与利用是全球学术界和工业界关注的热点,也是燃烧科学技术领域的前沿和难点。固体燃料的流化床富氧燃烧耦合了流化床燃烧和富氧燃烧的诸多优点,是最具工业应用前景的燃烧中碳捕集技术之一。为更全面把握该领域最新动态,对近年来流化床富氧燃烧的研究进行了系统梳理,在简述富氧燃烧基本技术原理基础上,分析了国内外的研究动态,总结了主要研究进展,包括单一燃料流化床富氧燃烧、混合燃料流化床富氧燃烧、加压流化床富氧燃烧和新型流化床富氧燃烧,并探讨了固体燃料流化床富氧燃烧技术将来发展趋势和研究重点。 相似文献
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我国磷矿资源特点与制富过磷酸钙技术的发展 总被引:1,自引:0,他引:1
本文在分析讨论我国磷矿资源的品位、品质和反应活性等特点的基地上,结合磷矿特性和磷肥品种之间的关系及富过磷酸钙近年来的技术发展情况,提出了在我国发展富过磷酸钙生产的必要性和可能性。 相似文献
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过磷酸钙作为复混肥生产原料时,存在水溶磷的退化现象。用田间实验验证了氨酸法工艺中以过磷酸钙为原料时的水溶磷的退化现象。提出过磷酸钙不宜作为氨酸法工艺原料。 相似文献
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过磷酸钙是我国传统的磷肥品种之一,采用工艺计算方法,仿真探讨了磷矿中主要组分氟磷酸钙、碳酸钙(镁)、三氧化铁(铝)和氟化钙对过磷酸钙生产指标的影响规律,结果表明:氟磷酸钙质量分数增大,过磷酸钙产品的质量指标(有效P2O5、游离磷酸P2O5、游离水等的质量分数)随之增大,产率和硫酸消耗定额也随之增大,磷矿消耗定额随之降低... 相似文献
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国内重过磷酸钙、尿素供应可靠,充分利用这两种原料生产高浓度复合肥,不仅生产成本较低,且能缓解国内重过磷酸钙和尿素的销售压力。就重过磷酸钙一尿素系复肥小型生产装置,介绍了其工艺流程和主要控制参数,并提出了提高产品水溶性的措施。 相似文献
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SSS Rajan 《Nutrient Cycling in Agroecosystems》1985,8(2):147-155
Partially acidulated phosphate rocks were prepared from unground North Carolina phsophate rock and H3PO4 by (i) mixing phosphate rock with the requisite amount of H3PO4, (ii) mixing with a portion of the acid followed by adding the remaining acid during granulation and (iii) single-step acidulation and granulation. The degrees of acidulation were 20, 30, 40 and 50%. Only 20% and 30% acidulations were done by method (iii). The phosphate rock granulated readily on addition of H3PO4 either as in method (ii) or (iii) and the products did not need external drying before storage. The citric and water soluble P showed that from the viewpoint of acid-phosphate rock interaction all three methods of preparation were satisfactory. The granules were equally strong as or stronger than commercially available single or triple superphosphate samples tested. The percent degradation on abrasion was less than 4% compared to about 8% for superphosphate and 0.4% for triple superphosphate. A sand incubation study suggested an interaction in the partially acidulated phosphate rock between the monocalcium phosphate component and unreacted phosphate rock which initially increased the solubility of P. 相似文献
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以中低品位磷矿为原料、采用矿浆浓酸法(湿法)生产疏松状过磷酸钙产品时,存在产品含水量控制不稳定、产品结块严重、全磷转化率低等问题。采用由表面活性剂、分散剂、水组成的液体过磷酸钙活化疏松剂与硫酸一起进入酸浆混合器中生产过磷酸钙产品,可使混合反应更彻底,产品的有效磷(以P2O5计)质量分数提高0.5%~1.0%,含水质量分数降低1.5%~3.0%,全磷转化率提高3%~7%,而且可减少熟化翻堆次数并缩短熟化时间,具有显著的经济和社会效益。 相似文献
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R. F. Brennan 《Nutrient Cycling in Agroecosystems》1992,31(1):43-49
Wheat was grown continuously in soil amended with 5 levels of superphosphate and with 4 levels of urea at 3 sites. The incidence and severity of take-all, caused byGaeumannomyces graminis var.tritici, declined with increasing rates of application of both superphosphate and urea.In both years, the severity of take-all on plants receiving neither superphosphate nor urea was about 40% while at the highest level of superphosphate and urea supply the take-all severity was approximately halved at 22%.There was an increase in grain yield in response to applied superphosphate and urea to the highest level of each nutrient. There was also an increase in the 1,000-kernal weights with superphosphate and urea fertilizer application. 相似文献
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Factors affecting the agronomic effectiveness of phosphate rock for direct application 总被引:4,自引:0,他引:4
Phosphorus (P) is critically needed to improve soil fertility for sustainable crop production in large areas of developing countries. In recent years, phosphate rock (PR) for direct application has been tested in tropical acid soils as a potential alternative to conventional water-soluble P fertilizers like single superphosphate (SSP) and triple superphosphate (TSP). Some developing countries have PR deposits which, if used to supplement other imported P fertilizers, would allow a saving of much needed foreign exchange. Solubility of P fertilizers is not the only criterion in selection of the most suitable P fertilizer. This paper discusses the results of experiments to compare the relative agronomic effectiveness (RAE) of various PR sources with respect to SSP or TSP as influenced by four important factors: PR sources, soil properties, management practices, and crop species. Under certain conditions, PRs can be agronomically effective. 相似文献