英语翻译

Reaction products recovery . Reactor products are first exchanged to produce steam, then cooled to about 80-90。C, and scrubbed with a 30-35 percent aqueous ammonium sulfate solution with some free sulfuric acid. Here excess ammonia is removed and most of the scrubbed solution recycled. Some sulfuric acid is added and part of the solution withdrawn for ammonium sulfate recovery. The ammonium sulfate solution, for a number of reasons , contains very low organic impurities and after special treatment gives white crystals in conventional equipment.
Hot gases from the neutralizer next are water washed at ambient temperature to absorb acrylonitrile ,acetonitrile hydrogen cyanide and other by products . effluent gases ---mainly nitrogen , carbon oxides and unreacted oxygen and propylene-are vented .
This organic solution is steam stripped and crude acrylonitrile recovered as overhead and the lean water recycled from the bottom to the top of the absorption tower .
Small alkali additions are made to this solution to maintain its ph and avoid corrosion problems .
Acylonitrile purification
After preliminary evaporation to remove high boiling produce-cyanohydrins and a little succinonitrile-purification of acrylonitrile is carried out by a series of distillation step. Succinonitrile is formed in trace amounts by the addition of HCN to the very small amounts of carbonyl compounds-acrolein ,acetaldehyde , acetone-present in the mixture
Hydrogen cyanide is removed first as overhead at more than 99.5 percent purity and can be recovered and used directly or burned in flare .
Next , acetonitrile is removed by extractive distillation with water ;minimum of acrylonitrile is lost with the dilute aqueous solution of acetonitrile as bottoms . this solution is stripped in another column not show in fig.1—and the bottoms water recycled to the extractive distillation step . the homogeneous phase containing up to 70 percent acetonitrile at the top may be disposed of or preferable used for recovering very pure , dry acetonitrile
Acrylonitrile is dehydrated and the overhead , an azeotropic mixture of acrylonitrile and water , carries small amounts of low boiling impurities which are essentially the last traces of acrolein.
The dehydration column bottoms are fed to the final purification step where pure acrylonitrile goes overhead and the bottom containing some acrylonitrile and the high boiling impurities is recycled to the beginning of the purification process.
拒绝机译 分不是问题,有诚意的来,机译的靠边站!!!

Reaction products recovery .
反应产物的回收
Reactor products are first exchanged to produce steam, then cooled to about 80-90。C, and scrubbed with a 30-35 percent aqueous ammonium sulfate solution with some free sulfuric acid. Here excess ammonia is removed and most of the scrubbed solution recycled. Some sulfuric acid is added and part of the solution withdrawn for ammonium sulfate recovery. The ammonium sulfate solution, for a number of reasons , contains very low organic impurities and after special treatment gives white crystals in conventional equipment.
反应产物先进行(热)交换,产生蒸汽,然后冷却到80-90℃,并用30-35%的含有某些游离硫酸的硫化铵水溶液擦洗。这里将过多的氨去除,而大多数擦洗的溶液则被循环利用。添加一些硫酸,而部分溶液被收回用于硫化铵的回收。由于几个理由,硫化铵溶液含有很少的有机杂质,并在特殊处理后在常规的设备中形成白色的晶体。
Hot gases from the neutralizer next are water washed at ambient temperature to absorb acrylonitrile ,acetonitrile hydrogen cyanide and other by products . effluent gases ---mainly nitrogen , carbon oxides and unreacted oxygen and propylene-are vented .
来自后面中和器的热气体在室温下水洗,以吸收丙烯腈、乙腈、氰化氢和其他副产物。排放的气体(主要是氮气、二氧化碳和没有反应的氧和丙烯)被放空排出。
This organic solution is steam stripped and crude acrylonitrile recovered as overhead and the lean water recycled from the bottom to the top of the absorption tower .
这一有机溶液是蒸汽气提的,粗丙烯腈作为塔顶馏出物回收,而废水从吸收塔底部到顶部循环。
Small alkali additions are made to this solution to maintain its ph and avoid corrosion problems .
对此溶液添加少量的碱,以保持其pH值,并避免腐蚀问题。
Acylonitrile purification
丙烯腈的提纯
After preliminary evaporation to remove high boiling produce-cyanohydrins and a little succinonitrile-purification of acrylonitrile is carried out by a series of distillation step. Succinonitrile is formed in trace amounts by the addition of HCN to the very small amounts of carbonyl compounds-acrolein ,acetaldehyde , acetone-present in the mixture
在初步蒸发去除高度沸腾的产物氰醇后,通过一系列的蒸馏步骤进行丙烯腈的少量丁二腈提纯。丁二腈是通过将HCN添加进存在于混合物中的很少量的羰基化合物(丙烯醛、乙醛、丙酮)痕量形成的。
Hydrogen cyanide is removed first as overhead at more than 99.5 percent purity and can be recovered and used directly or burned in flare .
氰化氢先作为塔顶馏出物在99.5%的纯度下去除,并可回收和直接采用,或像火炬一样烧掉。
Next , acetonitrile is removed by extractive distillation with water ;minimum of acrylonitrile is lost with the dilute aqueous solution of acetonitrile as bottoms . this solution is stripped in another column not show in fig.1—and the bottoms water recycled to the extractive distillation step . the homogeneous phase containing up to 70 percent acetonitrile at the top may be disposed of or preferable used for recovering very pure , dry acetonitrile
接下来,通过用水的萃取蒸馏去除乙腈;只有最少的丙烯腈随着乙腈的稀释水溶液作为底部残留物损失掉。这一溶液在另一个蒸馏塔(图1中没有示出)中被气提,底部的水循环利用到萃取蒸馏步骤。在顶部含有高达70%乙腈的均相可加以处理,或宁可用于回收很纯的干燥乙腈。
Acrylonitrile is dehydrated and the overhead , an azeotropic mixture of acrylonitrile and water , carries small amounts of low boiling impurities which are essentially the last traces of acrolein.
丙烯腈被脱水,而顶部馏出物(一种丙烯腈和水的共沸混合物)携带了少量的低沸点杂质,它们本质上是丙烯醛的最后痕迹。dehydration column bottoms are fed to the final purification step where pure acrylonitrile goes overhead and the bottom containing some acrylonitrile and the high boiling impurities is recycled to the beginning of the purification process. 脱水塔底部馈送到最后提纯步骤,在那里,纯的丙烯腈到达顶部和含有一些丙烯腈的底部,高沸点的杂质则循环到提纯工艺的起点。
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第1个回答  2009-03-28
俗话说求人不如求己啊,
建议您下一个“谷歌金山词霸”软件,
以后有什么翻译的您直接选中就是了,
不用浪费你的分值了,
他们也是用这个软件给你翻译的啊。
希望你能自己搜索一下看看。
真的,他们给的你是鱼我给你的是网,
自己选择最合适您的吧。
第2个回答  2009-03-28
反应产物复苏。反应器产品的首次交换产生蒸汽,然后冷却至80-90 。 C和擦洗,以30-35百分之水硫酸铵溶液一些免费硫酸。这里除去多余的氨和大多数擦洗解决回收。一些硫酸添加和解决方案的一部分撤回硫酸铵复苏。在硫酸铵溶液,有许多原因,含有非常低的有机杂质和特殊处理后,使传统的白色晶体设备。
热气体从中和剂明年是水清洗常温吸收丙烯腈,乙腈氰化氢和其他的产品。污水气体---主要是氮,碳的氧化物和未氧气和丙烯是发泄。
这种有机的解决办法是蒸汽剥夺和原油丙烯腈收回的精益管理和水的回收从底部到顶部的吸收塔。
小碱增添了该解决方案保持其pH值,并避免腐蚀问题。
Acylonitrile净化
经初步蒸发消除高沸点生产, cyanohydrins和一个小succinonitrile净化丙烯腈进行了一系列的蒸馏步骤。 Succinonitrile形成微量的除了中HCN的数量非常少的羰基化合物,丙烯醛,乙醛,丙酮,目前在混合物
氰化氢删除第一的开销超过99.5百分之纯度和可以回收和利用直接或焚毁耀斑。
下一步,被删除的乙腈萃取精馏水;最低丙烯腈丢失的稀溶液乙腈作为底部。这个解决方案是剥离在另一栏不会显示在图和底部的水回收利用的萃取精馏一步。在均相高达百分之七十乙腈顶部可处置或最好用于恢复非常纯净,干燥乙腈
丙烯腈是脱水和间接的共沸混合物丙烯腈和水,进行少量的低沸点杂质基本上是过去的痕迹丙烯醛。
脱水柱底部是美联储最后纯化步骤,纯丙烯腈不用开销和底部含有一些丙烯腈和高沸点杂质被回收的开头净化进程。
第3个回答  2009-03-28
污水气体---主要是氮,碳的氧化物和未氧气和丙烯是发泄。这个解决方案是有机蒸汽剥夺和原油丙烯腈收回的精益管理和水的回收从底部到顶部的吸收塔。小碱增加作出这一解决方案,以维持其pH值,并避免腐蚀问题。 Acylonitrile净化初步蒸发后删除高沸点生产, cyanohydrins和一个小succinonitrile净化丙烯腈进行了一系列的蒸馏步骤。 Succinonitrile形成微量的除了中HCN的数量非常少的羰基化合物,丙烯醛,乙醛,丙酮,目前在混合物氰化氢中删除第一次作为间接超过99 。

脱水柱底部是美联储最后纯化步骤,纯丙烯腈不用开销和底部含有一些丙烯腈和高沸点杂质被回收的开头净化进程。

百分之五的纯度和可以回收和利用直接或焚毁耀斑。下一步,乙腈是去除萃取精馏水;最低丙烯腈丢失的稀溶液乙腈作为底部。这个解决方案是剥离在另一栏不会显示在图和底部的水回收利用的萃取精馏一步。在均相高达百分之七十乙腈顶部可处置或最好用于恢复非常纯净,干燥的乙腈丙烯腈是脱水和间接的共沸混合物丙烯腈和水,进行少量的低沸点杂质,这是基本上是过去的痕迹丙烯醛。

反应产物复苏。反应器产品的首次交换产生蒸汽,然后冷却至80-90 。 C和擦洗,以30-35百分之水硫酸铵溶液一些免费硫酸。这里除去多余的氨和大多数擦洗解决回收。一些硫酸添加和解决方案的一部分撤回硫酸铵复苏。在硫酸铵溶液,有许多原因,含有非常低的有机杂质和特殊处理后,使传统的白色晶体设备。热气从中和剂明年是水清洗常温吸收丙烯腈,乙腈氰化氢和其他的产品。
第4个回答  2009-03-28
你好~!~
反应产物康复。反应堆生产产品第一交换蒸汽,然后冷却到大约80% - 90.C擦洗,有30 - 35%的水硫酸铵和一些自由硫酸的解决方案。这里是去除多余的氨水溶液擦洗,大部份的再生。有些硫酸补充和解决方案的一部分撤回对硫酸铵康复。这个硫酸铵溶液,因为种种原因,含有非常低的有机杂质和特殊治疗后给白色晶体在常规设备。
从原料的热气体下被水冲室温吸收丙烯腈、乙腈氢氰化物和其他产品——-mainly。废水气体氮、氧、碳氧化物和unreacted propylene-are通风装置。
这种有机溶剂是蒸汽和粗丙烯腈回收开销和精益水从底部的吸收塔。
小碱添加了这个方案,以维持其ph值和防止腐蚀问题。
Acylonitrile净化
初步的蒸发除去高沸produce-cyanohydrins和一个小succinonitrile-purification丙烯腈进行的一系列蒸馏的一步。Succinonitrile形成微量的HCN非常少量蛋白质羰基compounds-acrolein、乙醛、acetone-present混合物中
氢氰化在头顶上拆卸第一为超过百分之99.5纯度和可以回收用于直接或燃烧的光斑。
接下来,乙腈被萃取精馏和水,最少丙烯腈丢失和稀溶液的乙腈为底部。这方案是在另一栏不显示剥离的底部,在fig.1-and萃取精馏回收到水。均匀相位含有多达70%乙腈顶上可以被处理掉或优先用于恢复很纯,干乙腈
脱水和开销丙烯腈、丁醇和水的混合物,丙烯腈少量低沸腾的杂质也就是最后痕迹的论述。
脱水柱底是美联储最后一步都有纯净化的底层架空、丙烯腈含有一些丙烯腈和高沸杂质是循环开始净化过程。
第5个回答  2009-03-29
英语翻译
悬赏分:200 - 离问题结束还有 20 天 8 小时
These distillation steps are carefully designed for maximum efficiency with utmost care exercised in critical parts of the equipment to ensure safe, smooth and continuous operation with particular regards to polymer fouling. Optimized amounts of acrylonitrile stabilizers are used throughout all recovery and purification steps. To meet the usual customer requirements, final product acrylonitrile is stabilized with hudroquinone monomethyl ether.
Waste treatment and disposal
Unavoidably, a certain amount of waste material is produced .Aqueous liquids are the largest problem both in quantity and composition. The quantity is fixed by the water produced in the reaction and the process purges which are minimized by complete recycling. Composition is mostly nitriles and other nitrogen compounds but the ammonium sulfate from the mother liquor of the crystallization step must be considered. For the most economical disposal of these wastes, both chemical and biological treatment is used.
Organic liquids-mostly cyanohydrins and acetonitrile-are easily and completely burned. The only solid wastes are catalysts fines which are scrubbed by the ammonium sulfate solution and these are easily settled and filtered or these are easily settled and filtered or centrifuged. The high silica content of the metal components of this solid waste. But a treatment has been developed to recover the valuable metal components , so that practically only silica remains to be disposed of.
Gaseous wastes consist of off-gases from the water absorber, and their residual content of nitriles-acrylonitriles and hydrogen cyanide-is less than 10 ppm due to carefully design and operation of the absorber. These are discharged to the atmosphere through a stack of some heat has been considered by burning these off-gases in a boiler with conventional fuel , but because of the very low propylene content , this becomes a matter of economical evaluation case by case.
问题补充:拒绝机译 拒绝机译 分不是问题,有诚意的来,机译的靠边站!!!
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