查询词典 hydrogen fluoride

The invention provides an anhydrous hydrogen fluoride production process; reaction raw materials fluorite powder and sulfate are mixed by an external mixer and enter into a converter with jacket; hot air with the temperature of 350 DEG C to 600 DEG C is fed in the jacket; the fluorite powder and the sulfate have chemical reaction and produce hydrogen fluoride; the produced hydrogen fluoride enters into a scrubber from a furnace header to be washed; the washed hydrogen fluoride enters into an intermediate tank from a condenser, and then receives distillation and degasification to prepare the finished product anhydrous hydrogen fluoride; solid residue is emitted from a furnace tail.

本发明提供一种无水氟化氢生产工艺，反应原料萤石粉及硫酸经外混器混合后进入带有夹套的转炉，向夹套内通入350～600℃的热风，萤石粉和硫酸在发生化学反应生成氟化氢，生成的氟化氢气体由炉头进入洗涤塔进行洗涤，洗涤后的氟化氢由冷凝器进入中间槽，然后经过精馏、脱气制得成品无水氟化氢；固体残渣由炉尾排出。

The main products are inorganic fluoride, with the integrated capacity of 150 thousand tons per year, our main products are: synthetic cryolite, aluminium fluoride, sodium fluoride, silica white, hydrofluoride, potassium fluoroborate, potassium fluotitanate, potassium aluminium fluoride, magnesium fluoride, barium fluoride, lithium fluoride ,potassium fluoride, magnesium fluorosilicate, potassium fluorosilicate, potassium fluorosilicate etc.

多氟多公司生产区多氟多化工股份有限公司，公司注册资本8000万元，为河南省高新技术企业，是中国最大的无机氟化盐生产基地之一。综合产能15万吨/年，主要产品有冰晶石、氟化铝氟化钠、白炭黑、氢氟酸、氟硼酸钾、氟钛酸钾、氟铝酸钾、氟化镁、氟化钡、氟锆酸钾、氟化氢铵、氟化铵、氟化钾、氟化锂、氟硅酸钠、氟硅酸钾、氟硅酸镁等。

The dry process aluminum fluoride divides into the hydrogen fluoride preparation according to the technical process (including acid to material, fluorspar to give material, hydrogen fluoride reactor) and the aluminum fluoride preparation including the fluid bed, exhaust processing, end product processing.

干法氟化铝按工艺流程分为氟化氢制备（包括酸给料、萤石给料、氟化氢反应炉）及氟化铝制备包括流化床、尾气处理、成品处理。

Fluoride is a major component of the low hydrogen electrode. It can react with hydrogen during welding to produce hydrogen fluoride, and decrease the hydrogen content of weld bead.

氟化物是低氢系手工电焊条的主要成分之一，在焊接时可与氢反应产生氟化氢，使焊道氢的含量降低。

Yes!Fluoride is anaturally occurring mineral that helps to safely strengthen tooth enamel and prevents cavities.Fluoride is one of the ingredients of Glister Multi-Action Fluoride Toothpaste.Brush at least twice aday with Glister Multi-Action Fluoride Toothpaste to help remove food residue and plaque.

A：可以！氟是一种自然存在的矿物质，能安全有效地巩固珐琅质，防止蛀牙丽齿健氟素牙膏亦含有氟这一种成份每天以丽齿健氟素牙膏刷牙最少两次，清除牙齿上的食物残渣！

Fluoride with sodium fluoride, potassium fluoride, stannous fluoride and sodium monofluorophosphate.

氟化物有氟化钠，氟化钾，氟化亚锡及单氟磷酸钠。

It was found that low hydrogen purity and high moisture content of the hydrogen used for deoxidation was the main cause. Countermeasures such as exhausting 90% of the waste gas from the deoxidation process to hydrogen recompression system to reduce the water content in deoxidation zone, and using hydrogen from PSA unit to replace recycle hydrogen to increase the hydrogen purity, were adopted.

参考UOP公司及其它重整装置的经验，对重整催化剂还原工艺进行了改进，将90％的还原废气排入增压氢系统，可有效降低还原区的水含量；用PSA氢替代循环氢，可进一步提高还原区氢纯度，从而提高还原反应速度，改善再生催化剂的性能，使重整反应的芳烃产率有所提高。

In the electrolytic exhaust gas of aluminium, the hydrogen fluoride is the main pollutant , so it is to judge one of the important standards up to standard of in electrolytic discharge of aluminum smelter to measure the content that the exhaust gas hits the hydrogen fluoride.

在铝电解烟气中，氟化氢是最主要的污染物，因此检测烟气中氟化氢的含量是判断电解铝厂排放是否达标的重要标准之一。

In this paper, the current states of research about the basic theory of harmonic oscillator and hydrogen atom in quantum mechanics are firstly reviewed. On base of it, and the relationships between harmonic oscillator and hydrogen atom in quantum mechanics are studied. By use of the relationships between the hermite polynomial and the laguerre polynomial, the eigenequations of one-dimensional harmonic oscillator and hydrogen atom are conversed into the same equations in form. Therefore the relationships between energy levels and wave functions of one-dimensional harmonic oscillator and hydrogen atom are found. Through the coordinates transform, the relationships between energy levels and wave functions of two-dimensional harmonic oscillator and hydrogen atom are found.

首先综述了谐振子与氢原子的基本理论的研究现状，并在此基础上对谐振子与氢原子的关系展开了研究，通过厄密特方程与拉盖尔方程的相互转化，将一维谐振子与一维氢原子的本征值方程转化为相同形式的方程，从而比较得出它们能量及波函数间的关系，并通过坐标变换将直角坐标系下二维氢原子的本征值方程转化成与曲线坐标系下二维谐振子的本征值方程相同的形式，从而得出二维氢原子与二维谐振子的能量及波函数的关系。

The present invention relates to compounds of formula wherein R is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkyl substituted by halogen; R is hydrogen or halogen; or R and R are together with the carbon atom to which they are attached -CH=CH-CH=CH-; R is hydrogen, lower alkyl, phenyl optionally substituted by halogen, or is hetaryl, optionally substituted by lower alkyl; R is hydrogen, lower alkyl, phenyl, benzyl, lower alkenyl, lower alkoxy, phenyloxy, benzyloxy, S-lower alkyl, halogen, CN, lower alkyl substituted by halogen or O-lower alkyl substituted by halogen; R is hydrogen or lower alkyl, aryl is phenyl or naphthyl; n is 1, 2 or 3; m is 1 or 2; and pharmaceutically acceptable acid addition salts and tautomeric forms thereof.

本发明涉及式化合物及其可药用的酸加成盐和互变异构形式，其中R 1 是氢、低级烷基、低级烷氧基、卤素或被卤素取代的低级烷基；R是氢或卤素；或R 1 和R与它们连接的碳原子一起是-CH＝CH-CH＝CH-；R 2 是氢、低级烷基、任选被卤素取代的苯基或者是任选被低级烷基取代的杂芳基；R 3 是氢、低级烷基、苯基、苄基、低级链烯基、低级烷氧基、苯氧基、苄氧基、S-低级烷基、卤素、CN、被卤素取代的低级烷基或被卤素取代的O-低级烷基；R 4 是氢或低级烷基，芳基是苯基或萘基；n是1、2或3；m是1或2。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48