查询词典 ammonia process

Taking piggery wastewater with high ammonia nitrogen and organic concentrations as treatment object,the ANAMMOX-based nitrosation process was investigated under the condition of ambient temperature of 25 ℃ and constant pH.

以高氨氮、高有机物浓度的养猪场废水为处理对象，在室温(25℃)、不调节pH的条件下，研究了基于厌氧氨氧化的亚硝化过程。

The thermal calculation and the test have proved that because of short heat introduced into absorption tower by ammonia behind bubble capammonia still towers the quality of yellow sodium prussiate is influenced in the production process system of yellow sodium prussiate.

采用热量计算和试验证明，在黄血盐钠生产工艺系统中，由于泡罩蒸氨塔后氨气带入吸收塔的热量不足，在运行过程中影响了黄血盐钠的质量。

The present invention discloses a carbon monoxide conversion process for preparing synthetic ammonia by using coal or residuum as raw material.

本发明公开了一种以煤或渣油为原料制备合成氨的一氧化碳变换工艺。

A process for producing sodium carbonate from sodium chloride and ammonia and carbon dioxide.

由氯化钠、氨和二氧化碳生成碳酸钠的过程。

This paper based on 180,000 tons of synthetic ammonia and 300,000 tons of urea Manufacturing Process of Henan Heartbeat Chemical Company ,which is born by Zhejiang soupcon Co., LTD.

本文对集散控制系统的发展过程进行了综述，介绍了集散控制系统的基本结构和工作原理，介绍了集散控制系统的发展趋势及近几年来集散控制系统在工业现场的具体运用情况，并重点分析了浙大中控的ECS-100集散控制系统的特点和组成。

Ammonia volatilization was the main reason of nitrogen loss and stench arising in poultry composting process.

氨挥发是堆肥发酵过程中，臭味产生和氮素损失的主要原因。

The optimum process was as follows : solvent is 0.3% ammonia solution , ratio of solvent to solid ratio is 10:1 , vacuum-cavitated time is 15 minutes , GA extraction yeild is 2.0%, the crude extract is 30.3%, and in which the content of GA is 6.6%.

采用负压空化方法对超临界萃取后固形物中甘草酸的提取工艺进行了研究，并研究了甘草酸纯化的工艺，通过影响因素试验和正交试验得出最佳工艺条件为：0.3%的稀氨水为溶剂，液固比为10：1，负压空化提取15min，甘草酸提取率为2.0%，含量6.6%。

The method only relates to two raw materials of zinc chloride and ammonia, which can effectively avoid generating impurities in the complicated preparation process.

这种方法只涉及到氯化锌和氨水两种原料，可有效的避免在复杂的制备过程中产生的杂质生成物。

Removal of high concentration of ammoniacal nitrogen discharged in rare earth production process by VMD is basically studied in this paper, and VMD can achieve the purpose of ammoniacal nitrogen removal and reuse of recovered ammonia at the same time.

进行了减压膜蒸馏法处理含高浓度氨氮的稀土冶金所排废水的基础研究，该法可达到脱除废水中高浓度氨氮及回收氨回用于生产过程的目的。

ABSTRACT In the process of rare earth production, large amount of sulfuric acid, hydrochloric acid and ammonia are consumed, However, there are large amount of sulfuric acid, hydrochloric acid or ammoniacal nitrogen in solutions or discharged waste water which need to be treated.

稀土冶炼过程中，一方面大量使用硫酸、盐酸及氨等化工原料，另一方面，在生产过程的某些中间环节或排放的废水当中，又含有大量的硫酸、盐酸或氨氮化合物需要处理。

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