leaching-50

化工英语翻译

2.2 oil leaching process:。

From the pretreatment to squeeze workshop pickle seed cake, first enter the material box, and then by the scraper conveyor, closed ground dragon into leacher. In the leacher material and solvent to form a countercurrent leaching process. Just enter the materials with a high concentration of mixed oil spray, then the mixed oil concentration is reduced, in turn with fresh solvent spray, finally complete the leaching materials after drip dry bucket discharge from the pulp. Leaching time of 90-120 minutes, leaching temperature 50 to 55 ℃, leaching after wet meal containing solvents under 30%.。

2.3 wet meal steamed off working procedure:。

Wet meal by the scraper conveyor to evaporate offline, in steamed off-line through delaminating beforehand, since the steaming layer, direct steam desolventizing, hot air drying and cold wind cooling layer, after meal residue solvent of 700 PPM, moisture below 12% ?。

沥滤是什么？

1。连续精馏

饲料的材料,它是被分为分数,介绍在一个或多个。

那列的外壳。由于重力之间的差别和水蒸气的液体。

阶段、液体披散在柱,从盘子的托盘,而蒸汽流了。

在每一栏,接触液体托盘。

到达底部的液柱部分蒸发,在激烈的流程。

提供boil-up发回了,这个专栏。其余的底部的液体。

为底,或退出产品。达到顶端的蒸汽冷却的专栏。

浓缩液体在头顶的冷凝器。这部分液体的专栏。

为提供液体溢出回流。其余的开销是撤回。

精华、塔顶产品。

这整个流程模式提供了精馏联系。逆流。

气液流的所有的托盘通过柱。气液阶段上。

方法给出热、压力、托盘、结构平衡在某种程度上依赖。

在接触托盘的效率。

轻(较低沸点)部件常常聚集在气相,虽然。

重(高)组成倾向的沸腾液体。结果是一个蒸汽。

针对阶段变得更丰富的组件时,液相色谱柱。

那个变得更丰富的大型部件作为这串向下。整体的分离。

提出了馏分和底部,主要取决于相关的波动性。

组成、数量的联系,并且比的盘子的液相流速。

到vapr-phase流量。如果饲料介绍在一个点沿柱壳,。

这个专栏分为上下节,这通常被称为精馏段,。

较低的部分,通常称为的部分。这些条款成为什么样的人。

在multiple-feed栏目,而不sidestream柱从产品。

撤回在柱长度除了两个最终产物。

希望多加点分，好难。谢谢。

英语翻译成中文，不要工具翻译，专业名词及缩写可以不用翻译

通过溶解将物质从固体中除去，这叫作沥滤。

化学加工业用到沥滤，但这个过程通常被称作淬取，而且常常使用有机溶剂。因为沥滤被用在分离金属与矿石以及从甜菜中抽取糖方面已经有很多年，所以其理论和实践已得到高度发展。近来，环境工程师给于沥滤更大的关注，因为垃圾倾倒场和垃圾填埋场含有有害有毒废料。一种有毒化学品的自然分解有时产生一种毒性更强的化学品。从这些物质间流过的雨水会流入地下水、湖泊、河流、井、池塘等等。

还有英文参考资料：

Removal of materials by dissolving them away from solids is called leaching .（这是沥滤的概念）

The chemical process industries use leaching but the process is usually called extraction, and organic solvents are often used. The theory and practice of leaching are well-developed because for many years leaching has been used to separate metals from their ores and to extract sugar from sugar beets. Environmental engineers have become concerned with leaching more recently because of the multitude of dumps and landfills that contain hazardous and toxic waste. Sometimes the natural breakdown of a toxic chemical results in another chemical that is even more toxic .Rain that passes through these materials enters ground water, lakes, streams,wells, pond, and the like.。

Although many toxic materials have low solubility in water, the concentrations that are deemed hazardous are also very low. Furthermore, many toxic compounds are accumulated by living cells and can be more concentrated inside than outside a cell. This is why long-term exposure is a serious problem; encountering a low concentration of a toxic material a few times may not be dangerous, but having it in your drinking water day after day and year after year can ge deadly.。

Heap leaching is a countercurrent process where the solid is in a stationary heap and the solvent percolates through the solid. An example is a dump or landfill. In industrial leaching, solvent and solid are mixed, allowed to approach eqilibrium, and the two phase are separated. Liquid and solids move countercurrently to the adjacent stages. The solvent phase ,called the extract, becomes more concentrated as it contacts in stagewise fasion the increaseingly solute -rich solid. The raffinate becomes less concentrated in soluble material as it moves toward the fresh solvent phase.。

The main theory of leaching neglects mechanisms for holding the materials on the solid. Although adsorption and ion exchange can bind materials tightly to solids, we will simplify the analysis and consider only dissolving a soluble solid. An example is removing salt from sand by extraction with water.。

很长的化学专业的翻译

这段好长啊，继续给你翻

Cu，Cd和Ni在所有的沥出液中的平均浓度相对较低。超过80%的Cu和Ni停留在可氧化和残余阶段所以他们的初始沥出浓度很低（0.74mg L−1 and 0.62mgL−1）。因此，沥出液中仅有大约20%的Cu和10%的Ni。

未处理的沉淀物中Cd的浓度为 0.26mgL−1，低于TCLP的临界水平(<1mgL−1)。然而，沉淀物中大约25%的Cd为流动性和不稳定的。TCLP结果表明在五个月的处理之后渗滤液复合衰减了50%。简而言之，包含了磷灰石和水铁矿的复合添加剂表现出了其对于受Pb，Zn，Cu，Cd，Ni多元素污染的沉淀物的良好的固化作用。Pb，Zn，Cd在他们的滤出液中约减少了50%，并且Pb，Cd的浓度低于TCLP的界值。同时，滤出液中的CU和Ni浓度也减少至一个相对较低的级别并且在滤出液中观察到了其含量为20%的减少。TCLP表明在长期（五个月）的的衰减作用下部分的重金属由不稳定状态转化为稳定状态。这些结果对于沉淀物的固化具有重要的意义，因为它们表明磷灰石和复合添加剂能够修复沉底物质使其可以被人作为无害的。

acid-bioleaching ，mineral-leaching， 是什么意思

1. Pentachlorophenol on the yellow soil in three different soil depth of the absorption of static and dynamic adsorption and desorption dynamic and thermodynamic equation and use dynamic equations describing its absorption characteristics. The results showed that: three different soil depth of pentachlorophenol a certain absorption capacity in 90 min to reach equilibrium, the leaching of saturated absorption capacity of 50 μ g / g, deposition of the absorption capacity of saturated adsorption Capacity of 43.48 μ g / g, quality of the mother for 40 μ g / g, Freundilich adsorption isotherm can be used to describe the yellow soil PCP on the adsorption of. When the pH value of less than 5, when the acid soil, the soil of pentachlorophenol adsorption with pH values decrease with the increase. Ionic strength of the increase will raise the soil pentachlorophenol the loading capacity. Dynamic adsorption experiments, the soil by 5 μ g / mL of pentachlorophenol solution leaching, the leaching of soil layer in the adsorption time for 400 min, leaching solution volume of 750 mL, adsorption achieve balance in the deposition of the adsorption time for 510 min, Leaching solution volume of 850 mL, adsorption achieve balance in the absorption of the mother of time for 550 min, leaching solution volume of 950 mL, adsorption balanced. Dynamic desorption experiment, to continue to use tap water leaching of soil, soil in the leaching of desorption time 820 min, leaching solution volume of 400 mL, desorption achieve balance in the deposition of desorption time for the 1135 min, leaching solution volume of 500 mL, , Desorption achieve balance in the dissolution of desorption time for the 1450 min, leaching solution volume of 550 mL, desorption balanced. 。

2. The study of pentachlorophenol in the solution of activated carbon on the static and dynamic adsorption behavior. The results showed that: activated carbon to pentachlorophenol a good absorption properties, in 90 min to reach equilibrium, static saturated absorption capacity of 32.3 mg / g. The experiment within the framework of equilibrium and relations with Freundilich Langmuir isotherm, the correlation coefficient of 0.981 and 0.984 respectively. pH value in the range of 5 to 11 had no effect on the absorption capacity. Dynamic experiments, 2.5 g activated carbon-loaded by 40 μ g / mL pentachlorophenol dynamic adsorption, the outflow of fluid volume of 630 mL, the activated carbon adsorption basically saturated. Different concentrations of pentachlorophenol solution, the higher the rate of absorption of the smaller, the slower the flow rate, the higher the rate of absorption, the highest absorption rate of up to 100%. 。

3. The study of pentachlorophenol solution in the HDX-8 macroporous resin on the static and dynamic adsorption and desorption. The results showed that: 70 min to reach equilibrium, passive absorption of saturated solution to 7.351 mg / L, such as adsorption isotherm with Freundlich and Langmuir isotherm, the correlation coefficient of 0.99 in all the above. 1mol / L NaOH solution as a static test of desorption, desorption rate of 77 percent, the balance of desorption time 120 min. Adsorption solution in the dynamic test the concentration of smaller, the smaller the flow rate, the higher the rate of absorption, the highest absorption rate of 99.56 percent. Dynamic desorption with 1 mol / L NaOH solution to 0.5 mL / min flow rate of desorption, desorption the best, desorption rate can reach 96 percent or more.。

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