查询词典 sulfur

The method for the separation and determination of sulfur compounds in coked gasoline by gas chromatography-sulfur chemiluminescence detection was established.

建立了焦化汽油中硫化物类型分布的气相色谱-硫化学发光检测分析方法。

The kinetics process and temperature impact of natural groundwater denitrified by sulfur autotrophic was investigated. The results revealed that the denitrification rate of up-flow sulfur autotrophic denitrification filter followed a half-order kinetics model; and the reaction rate constant was mainly affected by the temperature. Based on the Arrhenius calculation, the activated energy was 80.38 kJ/mol.

研究实际地下水硫自养反硝化动力学过程，考察季节因素对动力学的影响，实验结果表明，地下水升流式硫自养滤柱反硝化动力学符合1/2级动力学模型，其反应速率常数受温度的影响很大，用阿仑尼乌斯方程计算硫自养反硝化活化能为80.38 kJ/mol。

Sulfur ore concentrate to chromic, nickel, in zinc waste water treating processes, increment, agitation time factors and so on discussed the temperature through the experiment, has thrown galvanizes the heavy metal waste water to sulfur ore concentrate processing the influence, thus obtains the galvanization waste water processing being suitable experimental condition.

本课题采用的硫精矿是邯郸市插箭岭磷肥有限公司所提供，硫精矿对含铬、镍、锌废水的处理过程中，通过实验探讨了温度、投加量、搅拌时间等因素对硫精矿处理电镀重金属废水的影响，从而得到电镀废水处理的适宜的实验条件。

The results indicate that ① the reactor with sulfur particle size of 2.8-5.6 mm can effectively remove nitrate from nitrified leachate up to a concentration of 400 mg/L NO - 3 N at a hydraulic retention time of 5.71h;② the minimum hydraulic retention time necessary for complete denitrification depends on sulfur particle size and influent nitrate concentration;③the maximum volume...

结果表明，当HRT为5.71h，硫磺粒径为2.8－5.6mm时，最高处理浓度（以NO－3－N计）达400mg／L。达到完全反硝化所需的最小停留时间取决于硫磺粒径及进水硝酸盐浓度。硫磺粒径为2.8－5.6mm，5.6－11.2mm，11.2－16mm时，NO－3－N最高容积负荷分别为594，278，175.4g／（m3d）。NO－3－N最大表面负荷约为0.68g／（m2d），是自养反硝化的控制因素，与硫磺粒径无关。

In range of 300℃～900℃, all the transition metal oxide catalysts could get high ammonia conversion, during the initial stages of the reaction, the SO〓 conversion is relatively low since the catalysts have not been sulfureted, but it increases gradually and attain constant with rising temperature and time continuance,〓 is better than other catalysts in reactivity and elemental sulfur selectivity; XRD indicates that, in the SO〓-SCR process, stable transition metal sulfide is generated which is very important to SO〓 reduction and transition metal sulfide probably is the active phase of catalyst, further the reduction of SO〓 by H〓 to H〓S is the limiting step of all process, then the activity is somewhat related to its lattice oxygen yet not so notable; XPS indicates that little sulfur on surface exists as S〓 in sulfate, showing that TiO〓 could restrain the generation of sulfate.

对于过渡金属氧化物催化剂的研究发现，在300℃～900℃范围内，不同的催化剂均可获得很高的NH〓转化率，反应初期由于催化剂还未硫化，所以SO〓的转化率较低，随着温度升高和反应时间的延续，SO〓的转化率逐渐升高并达到了稳定值；七种过渡金属氧化物中，以〓对于NH〓还原SO〓反应的活性和选择性最好；XRD结果表明在NH〓-SO〓反应后生成了稳定的硫化物相，硫化物对SO〓的还原过程具有重要作用，催化剂的活性相可能是过渡金属硫化物，而且在硫化物催化剂上进行的H〓还原SO〓生成H〓S的反应是整个过程的速率控制步骤，所以催化剂的活性与其自身的晶格氧的氧化还原能力有一定的联系，但关系不明显；XPS结果表明催化剂表面的硫大部分以过渡金属硫化物的形式存在，只生成少量的S〓，说明TiO〓催化剂能够较好的抑制硫酸盐的生成。

The present invention adopts ammonium salt solution as leach, and adopts the liquid-phase oxidation activating agent formed from surfactant sodium ligno-sulfonate or sodium dodecyl sulfonate, liquir phase oxidation catalyst Cu(2+) and sulfur-extracting agent tetrachloroethylene to implement quick leaching process of sulkfide mineral in gas-liquid-solid three-phase reactor, all the sulfurs contained sulfide in mineral powder can be converted into elementary sulfur and sulfuric acid radical, the contained zinc, copper, nickel, cobalt, lead, cadmium and silver can be changed into soluble salt, and fed into leach or remained in the leaching out slag.

本发明涉及的有色金属硫化矿的铵盐液相氧化直接浸出方法，其特征在于：采用铵盐溶液作浸出剂，采用由表面活化剂木质磺酸钠或十二烷基磺酸钠，液相氧化催化剂Cu2+、萃硫剂四氯乙烯组成的液相氧化活化剂，在气液固三相反应器内，实现硫化矿的快速浸出过程，矿粉中各种硫化物所含的硫转变为单质硫和硫酸根，所含的锌、铜、镍、钴、铅、镉、银等变成可溶性盐类进入浸出液中或留在浸出渣中，消除传统流程中二氧化硫，硫化氢，氮氧化物及含砷含汞含铅等有毒烟气的排放。

According to the principle for desulfurization and cyanide removal, the ways of sulfur formation and conversion were preliminarily analyzed, the influence of the factors such as HS- concentration, gas volume, gas component, air volume, ORP value, catalyst and make-up amount of ammonia liquor for separating sulfur out of Takahax process were studied.

根据脱硫脱氰原理初步分析了硫的生成和转化途径，探讨了 HS-浓度、煤气量、煤气组分、空气量、 ORP 值、触媒及氨水补充量这些因素对塔卡哈克斯析出硫磺的影响。

This paper studied sulfur dioxide control in alcoholic fermentation and malolactic fermentation of apple wine, and the effect of sulfur dioxide、 pH、 temperature on malolactic fermentation.

本文主要研究了苹果酒酒精发酵和苹果酸乳酸发酵中的二氧化硫的控制以及二氧化硫等因素对苹果酸乳酸发酵的影响。

Pure sulfur, a tasteless, odourless, brittle yellow solid, occurs in several crystalline and amorphous allotropes, including brimstone and flowers of sulfur.

纯硫是无味无嗅的淡黄色脆性固体，呈晶体状或非晶体状，如硫黄石和硫华。

Pure sulfur, a tasteless, odourless, brittle yellow solid, occurs in several crystalline and amorphous allotropes, including brimstone and flower s of sulfur.

纯硫是无味无嗅的淡黄色脆性固体，呈晶体状或非晶体状，如硫黄石和硫华。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。