查询词典 acid process

This paper introduces in detail the factors influencing the yield of the amino acetic acid with the chloroacetic acid ammonolysis process, and connecting with the production procedures, makes deep analysis, and puts forward some corresponding methods for increasing the yield.

详细介绍了氯乙酸氨解法氨基乙酸生产过程中影响收率的因素，并结合生产过程进行了深入分析，有针对性地提出了提高收率的办法。

For example, acetylene generated by the carbide process contains arsenical and sulphur compounds, and other impurities, which must be removed by scrubbingwith concentrated sulphuric acid before it is sufficiently pure for reaction with hydrochloric acid (此处有误,应为hydrochloride氯化氢) to produce dichloroethane.

例如，由碳化钙发生的乙炔气含有砷和硫的化合物以及其他的杂质，必须在乙炔有足够的纯度与氯化氢反应制造二氯乙烷之前，用浓硫酸洗去这些杂质。

The traditional process of Cu and As separation employs an insoluble anode. When arsenic acid is reduced in the cathode,simultaneously arsenious acid is oxidized in the anode.

得知：在采用不溶性阳极电积脱铜脱砷传统工艺流程中，砷酸在阴极发生还原反应形成亚砷酸，亚砷酸又与阳极产生的氧气发生氧化反应形成砷酸。

Based on analyzing the generation mechanism and quality characteristics of reclaimed acid from benzol refining and comparing varies kinds of purification methods, the operation easily, the technical process simple extraction method is used to purify the reclaimed acid and the dosage of the extraction agent and extraction power are studied in detail.

对精苯再生酸的生成机理、质量特性进行了分析，通过比较各种再生酸净化方法的优缺点，选用操作简便、工艺简单的再生酸净化方法——萃取法对再生酸进行处理试验，并对萃取剂的用量、萃取能力等进行了详细的研究。

The single pot process is in the sulfuric acid method a simpler one kind, the sodium bichromate and the strong sulfuric acid response, clarifies in the identical reactor completes.

单罐法是硫酸法中较为简单的一种，重铬酸钠和浓硫酸的反应、澄清在同一反应器内完成。

In summary, the alkylation performances of isobutane with butene over bothheteropoly acid and zeolite catalysts have been investigated in this thesis, and theresults are helpful for further development of the solid acid catalysts for this process.

通过本论文的研究，对杂多酸和分子筛催化剂的烷基化性能有了进一步认识，能对今后开发固体酸的碳四烷基化催化剂有所帮助和借鉴。

Influence of fluorine on filtration of acid-insoluble matter, crystal and filtration of calcium nitrate, ammonia neutralization of mother liquor and evaporation process of slurry are discussed based on its increasing slurry viscosity, rowing fine crystal and troubling filtration in production of nitrophosphate by nitric acid decomposing phosphate rock.

介绍在硝酸分解磷矿生产硝酸磷肥的过程中，杂质氟对酸不溶物过滤、硝酸钙结晶及过滤、母液的氨中和及料浆蒸发过程的影响。由于氟的存在使物料粘度增加，结晶细小，过滤变得困难。

It is the process during which the malic acid of wine changes into lactic acid and carbonic gas under the action of bacteria living in the wine.

苹果酸乳酸发酵是酒中的苹果酸转变成乳酸和二氧化碳的过程。

A process as claimed in claim 5 wherein the acid groups are carboxylic acid groups.

根据权利要求5人表示过程，其中的酸群体羧酸群体。

Through review of hydrochloric acid, sulfuric acid, the chemical nature of the general out of the common gender , both to enable students to understand the process of awareness of things, but also cultivate their comparison,...

通过复习盐酸、稀硫酸的化学性质概括出酸的通性，既让学生了解人们认识事物的过程，又培养了他们的比较、。。。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。