查询词典 ammonia process

It was pointed out that such problems as high recycling water temperature, bad cooling effect in methanol synthesis, high carbonizer temperature and incomplete absorption of ammonia, etc., existed in the conventional process.

分别介绍了天九化工有限公司合成氨生产装置冷却系统改造前后的工艺流程，指出原工艺流程存在循环水温度高、甲醇合成冷却效果差、碳化塔温度高、氨吸收不完全等问题。

A cleaner process of rice straw and wheat straw pulping by using aqueous ammonia mixed with small amount of caustic potash was studied.

本文研究了以氨水添加少量苛性钾碱对禾草原料制浆的清洁工艺。

The ammoximation of cyclohexanone with H2O2 and ammonia catalyzed by TS-1 is an environment-friendly process.

钛硅-1（TS-1）分子筛催化的环己酮氨氧化反应是一个绿色过程。

Vitamin C can interrupt the process of melanin production could have been generated to prevent further oxidation of DOPA ammonia was reduced to dopa, and can reduce serum levels of copper oxide, affecting the activity of tyrosine plum, thereby interfering with the biosynthesis of melanin, if the want to make the skin and fair complexion, we might eat more foods rich in vitamin C such as tomatoes, oranges, lemons, hawthorn, citrus and so on.

维生素C能中断黑色素生成的过程本来是可以防止的多巴氨进一步氧化减少到多巴，并能降低血清铜氧化，影响酪氨酸梅的活性，从而与黑色素的生物合成，如果干扰是想使皮肤白皙，我们可能会吃更多的食物含有丰富的维生素C，如西红柿，橙子，柠檬，山楂，柑桔等。

A process for desulfurizing, denitrifying and dusting the fume includes such steps as regulating the air supply of industrial furnace to decrease the generation of NOx, reversely spraying ammonia into combustion box, introducing oxygen to back smoke chamber, removing dust, reaction in centrifugally spraying drying tower to generate ammonium sulfate, separating, and washing in supergravitational washer.

要约 一种烟气脱硫脱氮除尘工艺及装置涉及烟气脱硫脱氮除尘工艺及装置。本发明的工艺包括调节工业炉炉膛内的供风，控制其空气过量系数，减少NO x 的生成量，在炉膛的烟气出口处向炉膛内喷氨，在炉膛后烟室通氧，除尘，烟气在离心喷雾干燥塔反应，生成硫铵，再分离，烟气通入超重力洗涤机洗涤。

Ethanolamines are commonly made by the method of reacting aqueous ammonia and ethylene oxide. Product profile, product quality and energy consumption are three key factors in ethanolamine process.

环氧乙烷氨解法是目前生产乙醇胺的主要方法，产品比例、产品质量及能耗是乙醇胺生产中的三个关键因素。

The technological parameters of the productive process of light magnesium oxide by ammonium bicarbonate-ammonia pyrogenation technology had been studied.

研究了碳酸氢铵氨水热解法制备轻质氧化镁的工艺条件，考察了原料Mg2+浓度、反应温度、Mg2+与NH3t当量比、NH3与NH4HCO3摩尔比和预氨化pH值对碱式碳酸镁的过滤性能、沉镁效率和碳酸氢铵消耗量的影响，并探讨了煅烧温度、煅烧时间、升温速度对轻质氧化镁视比容的影响。

Based on the reaction of diethylene glycol with ammonia,the main synthesize process of morpholine was studied.

对二甘醇和氨在催化剂存在及一定压力下反应制取吗啉的合成工艺路线、催化剂制备、产品分离及分析进行了详细综述。

Perm in the process of ammonia as a neutralizer shampoo was the use of a large number of shops and beauty salons.

烫发过程中氨水作为一种中和剂而被洗发店和美容院大量使用。

The ammonia was evaporated under decreasing pressure, and the precipitate was filtered off and the liquid was poured into hot saturated picric acid solution to get picrate with a yield of 85.0%. The optimum process starting from imidazole-4,5-dicarboxylic acid was: imidazole-4,5-dicarboxylic acid in acetic anhydride was refluxed to get imidazole-4-carboxylic acid, and the product was esterification in ethanol with a catalyzer of concentrated sulfuric acid to get ethyl imidazole-4-carboxylate, at last the compound above was reduced by LiAlH4 in ether at room temperature to get the target compound, the total yield of this route was 49.6%.

以4，5-二羧酸咪唑为原料的较佳工艺：1 脱羧反应：4，5-二羧酸咪唑40g，醋酐1200ml，回流10h，过滤并将滤液浓缩至干，所得固体加至50%的乙醇溶液回流，过滤并将滤液自然冷却过夜，过滤得固体；2 酯化反应：4(5)-羧酸咪唑50g，乙醇1000ml和浓硫酸60ml，加热回流2h，5%浓度NaOH溶液调节至pH＝8，减压浓缩至干，加入少量水回流，自然冷却过夜并过滤得固体；3 还原反应：LiAlH410g，乙醚300ml和4(5)-羧酸咪唑乙酯28g，常温反应1.5h，小心滴加25ml水后过滤，滤渣溶于300ml甲醇中并过滤，收集所得乙醚和甲醇滤液浓缩至干，将所得固体溶于300ml乙醇中加热回流，后将溶液浓缩至约30ml，冷却并过滤得固体，该路线总收率为49.6%。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失