精制

The first stage was actually the primary purification process, in which most of inorganic ammonium and some total ammine can be removed along with the primary purification process, the second stage was liquid phase oxidation method by sodium hypochlorite, in which inorganic ammonium and total ammine can be further removed.

一段除铵为原有的尾盐一次精制工艺。研究发现，在一次精制的同时，可以除去尾盐中的大部分无机铵及部分总胺，二段除铵采用次氯酸钠液相氧化法，以进一步除去尾盐中无机铵及总胺。

Application of deacidification technology in Ⅳ atmospheric and vacuum distillation unit of Zhonghai Asphaltum Stock Company is expounded.

目前，我国炼油厂对馏分油(直馏柴油、减压溜分油)脱酸多采用碱洗电精制工艺和加氢精制工艺。

This paper describes in detail crude benzol hydro-refining process technology and market prospect, expounds the advantages and disadvantages and economic benefit analysis of various crude benzol hydro-refining technology.

摘 要：本文系统的介绍了粗苯加氢精制的工艺技术以及市场前景，阐述了各种粗苯加氢精制技术的优缺点及经济效益分析。

The crude benzol process technology and future development orientation were introduced, the crude benzol refining process and process feature were analyzed, therefore technical personnel have got preliminary knowledge and understanding on crude benzol refining process.

摘 要：介绍了粗苯精制的工艺技术及未来发展方向，分析了粗苯精制工艺流程及工艺特点，使技术人员对粗苯精制工艺有初步的了解和认识。

Furfural refining of lube oil is the main and extremely important technique of solvent refining in china at present.

目前，润滑油糠醛精制是我国润滑油溶剂精制的主要精制工艺，它在我国的润滑油加工中占有极其重要的地位。

The A238/A440 was less than 0.20, the product rate was 48.91%, colourity was 218.12. The pigment was sensitive to acid , oxidant and Fe2 Cu2. This paper has proved that the pigment maintain stable under protection of glucose, sucrose and lactose. Meanwhile, the pigment showed heat- stability, preserve-stability and high-colored capacity in beverage, frozen foods and milk products.

采用凝胶层析法对栀子黄色素进行精制，原液中的A_(238/)A_(440)降到0.20以下，得率为48.91％，色素色价达到237.64 精制色素的稳定性实验表明：精制后的色素用于面食后没有绿变现象发生；酸性条件下色素的稳定性很差；糖能提高色素的稳定性；氧化剂会使色素褪色；还原剂和防腐剂对色素的稳定性影响不大；Fe~(2+)、Cu~(2+)对色素的稳定性影响较大；色素在饮料、冷冻食品和乳制品中的着色效果良好。

Hydrofining- hydrovisbreaking combined process has been adopted in the 5 000 b/d oil refining unit of Hangzhou Refinery and the hydrofining catalyst and hydrovisbreaking catalyst have been sectionally loaded in a single reactor to process inferior coker gasoline and gas oil.

杭州炼油厂 2 5 0kt/a油品精制装置采用加氢精制/临氢降凝组合工艺，在同一台反应器中分段装填精制和降凝催化剂，加工劣质汽油、柴油，操作弹性大，拓宽了柴油加氢精制的原料来源，大大提高了低凝柴油收率，且产品颜色浅、硫含量低、氧化安定性好。

In preparation of motor fuel, the bio-oil from pyrolysis of biomass must be further upgraded so as to improve its quality. However the catalyst used in the cracking reaction is easy to lose its activity due to being coked, so that it is important to study the coke formation and its effects on the catalyst activity in the cracking process.

为了获得高质量生物质燃料油，需要对生物质直接裂解得到的生物质油进行催化裂解精制：精制过程中催化剂容易结焦，对精制反应产生很大影响。

The process improvements in the desulfurization and decoloring of jet fuel are also summarized.

指出加氢精制工艺及纤维膜精制工艺将是大型炼化企业航煤生产中具有应用前景的精制工艺。

Will cause the oil to grow the colloid when the alcohol content of sulphur is high, it is difficult to keep.

除去杂质常用的方法有酸碱精制，脱臭，加氢，溶剂精制，白土精制，脱蜡等。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。