查询词典 chemical reaction

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。

Autocatalysis:Catalysis of a chemical reaction by one of the products of the reaction.

在这个过程中发生了某种化学反应，这反应消耗了金属板和溶液中的化学药品。

The calcium ion was assumed the representative ion in hydration products and the chemical dynamics model was established which describes the chemical reaction between hydration products in solidification sludge and acid.

2将水化产物中的钙离子作为代表性离子，建立了固化污泥中水化产物和酸反应的化学动力学模型；采用生物反应器强化微生物活性建立了固化污泥中机物降解的动力学模型。

Despite NH3-H2O is consumed in chemical reaction,(NH4)2SO4 can be directly reclaimed for the chemical fertilizer or ammonia,and ammonia can be recycled as precipitating agent .

与传统的酸法制备铁黄颜料工艺不同的是，本研究用NH_3·H_2O代替NaOH作沉淀剂制晶种，在二步氧化中通过滴加氨水和硫酸亚铁溶液替代铁皮。

Despite NH_3·H_2O is consumed in chemical reaction,(NH_4)2SO_4 can be reclaimed for the chemical fertilizer or ammonia, and ammonia can be recycled as precipitating agent.

反应过程中虽然消耗了氨水，但溶液中的(NH_4)2SO_4可回收用做肥料，也可回收氨，回收氨可返回用做沉淀剂，合理利用了资源。

In the third chapter of this dissertation, based on the physical and chemical properties of hydrogen and the combustion characteristics of hydrogen, the quasi-dimension combustion calculation model of hydrogen-fueled engine is set up through analyzing the characteristics of turbulence flame and chemical reaction kinetic of hydrogen-air mixture.

但是，对氢燃料发动机燃烧模型的研究尚处于空白。

Natural high-quality granite rollers with acid resistance, corrosion resistance, wear-resistant, non-and material from a chemical reaction, in the grinding process, such as natural cooling characteristics; granite roll grinder for grinding paint art, paint, ink, medicine, chemical industry, Date use of cosmetics and plant protein drinks (such as: almond Lu, peanut milk, pumpkin Lu), etc., especially in high-quality natural granite grinder grinding plant protein drink production with no waste, non-precipitation, not±, high raw material utilization ( is over 98%) and other unique features of plant protein drinks are the preferred manufacturer of grinding equipment.

天然优质花岗岩石辊具有耐酸碱、耐腐蚀、耐磨损、不和物料起化学反应、在研磨过程中自然冷却等特点；花岗岩石辊研磨机适用于研磨美术颜料、油漆、油墨、医药化工、日用化妆品及植物蛋白饮料（如：杏仁露、花生奶、瓜籽露）等，特别是天然优质花岗研磨机研磨生产的植物蛋白饮料具有无渣滓、不沉淀、不变味、原料利用率高（达98%以上）等独有特点，是植物蛋白饮料生产厂家首选的研磨设备。

The type of chemical reaction that causes this loss of elasticity is one that results in a chemical bond (a cross-link) between two nearby proteins that were previously able to slide across or along each other.

引起这种弹性丧失的化学反应类型，是在本来能横向滑动或彼此并排的相邻两个蛋白质之间产生一种化学键。

The breaking of gravity wave accelerates the downward transport of atomic oxygen, some smaller-scale structures appear on the horizontal distribution of atomic oxygen number density , and other chemical species are also affected due to the chemical reaction with atomic oxygen and the propagation of gravity wave. The OH airglow volume emission rate has an obvious response to the breaking gravity wave and atomic oxygen. The nonlinear propagation of smaller vertical wavelength gravity waves can induce the double-peaked structure in the OH airglow. The results can explanation some sporadic measurements of OH airglow and can provide a good indication for studying the characteristic of nonlinear gravity wave by using OH airglow measurement.

在重力波的传播过程中，氢氧大气成分的水平和垂直分布均受到了不同程度的影响，以氧原子的响应最为明显，而其中重力波破碎在氧原子水平分布上的反应则是非线性重力波过程的一个重要表现；另外，分析显示，重力波的非线性传播对OH气辉的峰值分布由明显影响，小尺度重力波的传播有时会引起OH气辉出现奇异的双峰分布，重力波的破碎现象也可以从对气辉的观测中反映应出来，这对利用气辉观测研究重力波传播特性有非常重要的指示意义。

The governing equation with chemical reacting flow is established. Using time splitting algorithm, the convection term is solved with the second-order Godunov method and the chemical reaction is coped with two-step model. Standing oblique detonation waves induced by an accelerating projectile are simulated numerically. The results are compared well with the data of the experiments.

建立了含化学反应流体流动的数值模拟模型，用时间分裂法对对流项和化学反应项分别采用高阶Godunov格式和两步反应模型进行处理，对锥形斜爆轰波和驻定在飞行弹丸上的斜爆轰波流场进行了数值模拟，得到了与实验现象相吻合的计算结果。

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。