
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 Some sulfuric acid is added and part of the solution withdrawn for ammonium sulfate recovery.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。
你好!! 氢氰化是另一种气态废水在某些情况下是不收回进一步use-it可以被烧死。 过程的公用事业,在经济学.电池的界限,因为一千公斤纯丙烯腈生产表准备副产品回收率显示在表2 氢氰化作为气体了超过百分之99.5纯度和不需要进一步处理好几反应。乙腈可恢复在一系列的蒸馏方案产生的70%。montecatini爱迪生开发和测试的商业过程符合现行规范的几种乙腈使用如下橡胶厂丁二烯萃取精馏塔 产品规格丙烯腈在表3 投资资本费用可以从花12.6亿意大利里拉了120,000-metric-ton /年的植物 这个工业过程及其性能都由公司的扩展工作人员在实验室、厂房、工艺设计及工程开工前,小心的商业植物提炼的操作条件和经验,在装置的运行。 12公斤的特定消费每公斤的丙烯产量丙烯腈对应一个磨牙的大约66%的全面的过程。这相当于一个核反应堆产量的百分之七十的鼹鼠基础工业反应堆运行持续。这是由于杰出的性质的活动和生活。因为催化剂的低容重、少量的催化剂,并要求,从而降低投资成本较低的催化剂,因为它的70 - 80wt. / wt.硅和适度的成本占活性组分的安逸的准备。 蒸汽消耗2.5公斤,每公斤丙烯腈是一种平衡7公斤由热回收和9.5公斤的在各工序.original设备已经被开发和应用为最好的热回收,最好使用蒸汽在不同的栏目。复杂的设备已经避免在净化的章节,使用方便、操作安全可靠。资本成本不仅影响,但他们的柱纯朴,它们的大小和建筑材料必须被考虑 因此,montecatint爱迪生过程是竞争与其他过程.continuing正在研究对化学工程进行改进。
Hydrogen cyanide is another gaseous effluent in cases where it is not recovered for further use-it can be burned. 氰化氢是在不回收供进一步利用时的另一种气体排放物,它可以被烧掉。Process economics .工艺的经济学。Materials and utilities ,within battery limits , for 1,000 kg pure acrylonitrile produced are shown in TABLE 1. by-products recoveries are shown in table 2在界区范围内,对于产生的1000kg纯丙烯腈来说,材料和功用示于表1。Hydrogen cyanide is obtained as a gas of more than 99.5 percent purity and needs no further treatment for several reactions . acetonitrile can be recovered in a series of distillation columns from the 70 percent solution produce . montecatini Edison has developed and tested commercially such a process where the acetonitrile meet current specifications for several uses i.e butadiene extraction 氰化氢是作为超过95%纯度的气体而获得的,而且不需要进一步处理就可用于好几种反应,丙烯腈可以用一系列的蒸馏塔从70%的溶液而回收。Montecatini Edison已经在商业上开发并试验了一种工艺,在这种工艺中,丙烯腈能满足用于若干应用的现用规范,其中包括用于丁二烯的萃取。Product specifications of acrylonitrile are given in table 3 丙烯腈的产品规范在表3中给出。Investment and capital fees may be assessed from the cost of 12.6 billion Italian lire for a 120,000-metric-ton/year plant投资和资金费用可以根据12万公吨/年的工厂126亿意大利里拉的成本加以估算。 This industrial process and its performance are the result of extended work by the company’s staff in the laboratory ,pilot plant ,process design and engineering before the start of the commercial plant and careful refinement of operating conditions and experience gained in operation of the plant itself . 这一工业化的工艺及其绩效是公司员工在开始商业性生产,微调工作条件,获得工厂本身运作的经验前,于实验室、中试生产、工业设计和工程方方面广泛努力的结果Specific consumption on 1.2 kg of propylene per kg of acrylonitrile corresponds to a molar yield of about 66 percent for the over-all process . this corresponds to a reactor yield of 70 percent on the mole basis for large industrial reactors operating on a continuous basis .this is due to the out standing properties of the catalyst activity and life . because of its low bulk density ,small amounts of the catalyst are required thus reducing investment .the catalyst is low in cost because of its 70-80wt./wt. percent silica and the moderate costs of active components and ease of preparation.每公斤丙烯腈1.2kg丙烯的比消耗率相当于这个工艺大约66%的摩尔产率。这相当于连续工作的大型工业反应器在摩尔基础上70%的反应器产率。这是由于催化剂活性和寿命的杰出性能而导致的。因为其低的体积密度,所以催化剂所需的量少,从而降低了投资。因为其70-80wt/wt%二氧化硅,成本适中的活性成分和容易制备,所以催化剂的成本较低。 Steam consumption of 2.5 kg per kg of acrylonitrile is a balance between the 7 kg produce by heat recovery and the 9.5 kg consumed in the various process step .original devices have been developed and applied for the best heat recovery and best use of steam in the various columns. Complex equipment has been avoided in the purification section for easy and reliable operation . capital costs are not only affected by the number of columns ,but their simplicity , their size and construction materials must be considered 每公斤丙烯腈2.5kg的蒸汽消耗是在通过热回收的7kg产物和各个工艺步骤中9.5kg消耗之间的平衡。最初的装置已经研发出来,并用于最佳的热回收和最佳地利用各个蒸馏塔中的蒸汽。为了容易而可靠地工作,所以在纯化阶段避免了复杂的设备。资金成本不仅受到蒸馏塔数目的影响,而且它们的简单性,它们的尺寸和构成材料也必须加以考虑。Therefore ,the montecatint Edison process is competitive with other process .continuing studies are being made toward chemical and engineering improvement因此,Montecatini Edison的工艺与其他工艺相比是有竞争力的。对于化学上和工程上的改进正在进行继续的研究。
氰化氢气体排放是另一种情况是没有恢复的进一步使用,它可以被烧毁。工艺经济学。材料和公用事业,在电池的限制,为千千克纯生产丙烯腈均列于表1 。副产品回收率为表2所示氰化氢是获得的天然气超过99.5百分之纯度,无需进一步治疗了反应。乙腈可以回收的一系列精馏塔从百分之七十的解决办法产生。蒙特卡蒂尼爱迪生已开发和测试商业这样一个进程的乙腈满足目前规格几个用途岛 由于其低容重,少量的催化剂需要从而减少投资。催化剂成本低,是因为它70-80wt./wt 。百分之二氧化硅和温和的费用主动元件和易用性的准备。蒸汽消耗的2.5公斤每公斤丙烯腈是之间的平衡七公斤生产的热回收和九点五公斤消耗的各种进程的步骤。原始设备已经开发和应用的最佳热回收和最好地利用蒸汽在各栏。复杂的设备已经避免在净化节,方便和可靠的操作。资本成本不仅受影响的列数,但其简单,它们的大小和建筑材料必须考虑因此, montecatint爱迪生过程是竞争与其他进程。 é丁二烯萃取产品规格丙烯腈列于表3投资和资本费用可分摊的费用为12.6亿意大利里拉的120000-metric-ton/year厂这工业过程及性能的原因是延长工作该公司的工作人员在实验室,试验厂,工艺设计和工程开始前的商业计划和认真改进操作条件和操作经验的植物本身。具体消费1.2公斤丙烯每公斤丙烯腈对应的摩尔转化率约为百分之六十六的整体进程。这相当于一个核反应堆产量的百分之七十的摩尔基础大型工业反应堆运行在持续的基础上。这是因为站在了性能的催化剂活性和寿命。
造纸行业专业英语名词
导语:造纸是古代中国劳动人民的重要发明。下面是我收集整理的造纸行业专业英语名词,欢迎参考!
abrasive paper 砂纸
abrasive base paper 砂纸原纸
absorbing paper 吸水纸;吸收性纸
account book paper 帐簿纸
accounting machine paper 计算机用纸
acid-free paper 无酸纸
acid-proof paper 耐酸纸
acid resistant paper 耐酸纸
acoustic paper 隔音纸
actinometer paper 溴化银印相纸
active paper 吸湿纸
adding machine paper 计算机用纸
address label paper 地址标签纸
adhesive paper 胶粘纸
advertising paper 广告纸,招贴纸
agate paper 仿大理石纸
agate marble paper 仿玛瑙大理五石纹纸
age resistant paper 耐老化纸
air paper 航空信纸
air-dried paper 风干纸
air-filtration paper 空气滤纸
air-knife coated paper 气刀涂布纸
air-mail paper 航空信纸
air-proof paper 不透气纸
air-tight paper 气密纸
alabaster paper 名片纸
alabaster paper 薄纸
albumenized paper 蛋白胶纸,蛋白纸
albumin paper 蛋白胶纸
aligning paper 地图纸
alkali-proof paper 耐碱纸
all rag paper 全棉纤维纸
all-wood paper 全木浆纸
allogator imitation paper 仿鳄皮纸
alpha printing paper 西班牙草浆印刷纸
alpha-writing paper 西班牙草浆书写纸
aluminum paper 铝纸
aluminum-castling paper 铝衬纸
aluminum-coated paper 铝涂布纸
aluminum-dusted paper 铝粉纸
aluminum-foil backing paper 铝箔衬纸
aluminum diaphragm paper 石棉隔膜纸
aluminum (electrical)insulating paper 石棉(电)绝缘纸
aluminum wall paper 石棉壁纸
aseptic paper 消毒纸,防腐纸
ash less paper 无灰纸
ash filter paper 无灰滤纸
aluminum laminated paper 铝箔夹层纸
amber laid paper 琥柏条纹纸
ammunition paper 弹筒纸
amplitude response recording paper 频率感应记录纸
analytical filter paper 分析化学用滤纸
angle paper 斜面纸
angle-cut yarer 斜截面纸
angular paper 斜角纸
animal tub-sized paper 动物胶表面施胶纸
anti-acid paper 耐酸纸,抗酸纸
anti-acid manila paper 耐酸马尼拉纸
anti-corrosion paper 防蚀纸
anti-falsification paper 仿伪造纸
anti-fungicide paper 防霉纸
anti-fusion paper 服装剪裁用纸
anti-tarnish paper 防锈纸
anti-rust base paper 防锈原纸
anti-tarnish paper 防锈纸
antique paper 低光泽纸,仿古纸
antique book paper 仿古书籍纸
antique-bristol paper 仿古整饰光泽厚纸
antique-cover paper 仿古整饰封面纸
antique-eggshell paper 粗糙表面仿白纸粗糙表面仿白纸
antique-glazed paper 低光泽纸
antique-printing paper 仿古印刷纸,低光泽印刷纸
anti-rust paper 防锈纸
antiseptic paper 杀菌纸
antitarnish paper 保光泽纸
apricot paper 粉红色水果包装纸
aquare(le) paper 水彩图画纸,水彩画纸
archival paper 档案纸
armature paper 绝缘纸
aromatic paper 香料纸
arsenical paper 含砷纸
art paper 美术纸,铜版纸,涂料纸
art-cover paper 美术装饰纸
art-drawing paper 水彩例纸
art-poster paper 美术广告纸;美工宣传纸
articulating paper 牙科用纸
artificial leather paper 人造革纸
artificial parchment paper 仿羊皮纸
asbestos paper 石棉纸
asbestos base paper 钡地原纸,照相原纸
asphalt paper 防潮纸,沥青纸,柏油纸
asphalt base paper 沥青原纸
asphalt coated paper 沥青涂布纸
asphalt laminated paper 沥青层合纸
asphalt saturated paper 防潮纸,沥青纸
asphalt moisture proof paper 防潮纸,沥青纸
asphalt sheathing paper 涂布防潮纸,沥青涂布纸
asphalting paper 防潮纸,沥青纸
asthma paper 防喘纸
atlas paper 地图纸,绘图纸,印图纸
autochion printing paper 彩色印刷纸
auto copy paper 压感复写纸
autograph paper 纪念册纸
autographic register paper 自动(划线)记录纸
autographic transfer paper 复印纸
automobile-bag paper 汽车袋用纸
automobile tire roll paper 轮胎包装纸
autotype paper 复制纸,影印纸
avenue paper 食品包装纸
azure laid(writing) paper 蓝条纹书写纸
A printing A级印刷纸(含漂白磨木浆)
absolute humidity 绝对湿度
absolute temperature 绝对温度
absorbency of paper 纸张吸收性能
absorbent 吸收性的,吸收剂
absorbent paper 吸水纸,易吸墨的`印刷纸
addition agent 添加剂
additional agent 添加剂
autotype pigment paper 碳素纸
autogtaphic printing paper 转写纸
autographic stencil paper 誊写版蜡纸
articulating paper 双面复写纸
artificial parchment 仿硫酸纸
artist's illustration board 绘图用厚纸
ash content 灰分纸张
Ashcroft tester 纸张耐破裂度测试仪
ashless filter paper 无灰滤纸
art board 涂料板纸
art vellum 仿羊皮纸
antitarnish paper 防锈纸
antiquarian 纸张尺寸
antifalsification paper 防伪造纸
animal parchment 羊皮纸
anopisthographic block book 单面印刷的木版纸
A flute A级瓦楞纸波形数
abaca(Musa texilis) 马尼拉麻,蕉麻
abele(Populus alba) 银白杨
abienol 松香醇
abies 冷杉属
abietate 松香酸酯
abieteae(Abietoideae) 冷杉(亚科),松亚科
abietene 松香烯
abietic acid 松香酸
abrader 研磨机
abrading machine 研磨机
abrasion 磨损,磨蚀
abrasion resistance 抗磨性能
abrasion test 耐磨试验
abrasion t3ester 耐磨试验机
abrasive 磨损的,磨蚀的
abrasive acrion 磨蚀作用
abrasive fiber 砂纸原纸用纤维
abrasive grain 磨(料)粒(度)
abrasive machine 研磨机
abrasive resistance 抗磨性能
abrasive tester 耐磨试验机
abrasiveness 磨蚀
absolute alcohol 无水酒精
absolute alcohol dry 绝干
absolute alcohol humidity 绝对湿度
absolute alcohol temperature 绝对温度
absolute unit 绝对单位
absorb 吸收
absorbability 吸收性能
absorbed water 吸收水
absorbency 吸收能力;吸收本领
absorbent 吸收剂
absorbent felt 吸水毛毯
absorber 吸收器,吸收剂,减震器
absorbing capacity 吸收能力
absorbing capacity column 吸收塔
absorbing capacity pad 防震垫
absorbing capacity power 吸收能力
absorbing capacity quality 吸收性能;吸收能力
absorbing capacity tower 吸收塔
absorption 吸收作用
absorption ability 吸收能力
absorption band 吸收光带
absorption coefficient 吸收系数
absorption measurement 吸收测定
absorption rate 吸收率
absorption spwctrum 吸收光谱
absorption tester 吸收试验仪
absorption tower 吸收塔
absorptive capacity 吸收能力
absorptivity 吸收能力,吸收率
acacia (Acacia) 金合欢(属)
acacia false (Robinia psendon cacia L.) 刺槐;洋槐
acacia gum 金合欢胶
accelerant 催速剂,促进剂,加速剂
accelerated ageing 加速老化
accelerated cement 速凝水泥
accelerated oxidation 加速氧化
accelerated weathering 人工加速风干
accelerating agent 催速剂,促进剂
accelerator 加速器,促进剂
acceptability 合格率
acceptable fiber 合格纤维
accepted chips 合格木片
accepted chips product 合格产品
accepted chips stock 合格浆料
acceptance sampling system 合格率抽样系统
acceptance sampling system test 合格率检查
accepts 合格品;良浆
access time 存取时间,选取时间,信息发送时间
accessibility 可及度
accessory 附件;零件
a.c. commutator motor 整流式交流电动机
accident prevention 技术保安措施
accidental error 偶(然误)差
accordion fold 手风琴式折纸法
accumulation 累积,蓄积,储积,堆积
accumulator 储存槽,回收槽;蓄电池;污热水槽
accumulator acid (亚硫酸盐制浆)回收酸
accumulator relief 储存槽排气,回收槽排气
accumulator tank 储存槽,回收槽,污热水槽
accuracy 准确(度,性);精密(度,性)
acer 枫树,槭树
acetal 乙缩醛,乙醛缩二乙醇
acetaldehyde 乙醛
acetate 醋酸盐;醋酸酯;醋酸根(或基)
acetate fiber 醋酸纤维
acetate film 醋酸盐胶片
acetate rayon 醋酸人造丝
acetic acid 醋酸
acetic acid anhydride 醋(酸水)解
acetone 丙酮
acetonitrile 乙腈
aceto-veratrone 乙酰藜芦酮
acetyl 乙酰(基)
acetyl cellulose 醋酸纤维素
acetyl vanilloyl 乙酰基香草酰
acetylate 乙酰化,乙酰化产物
acetylation 乙酰化(作用)
achromatic 消色的,消色差的
acid accumulator (酸液)回收锅(或槽)
acid accumulator alizarin dye 茜素染料,1,2-二羟基蒽醌染料
acid accumulator alum 酸性明矾
acid accumulator bath 酸溶;脱酸槽
acid accumulator bleaching 酸性漂白
acid accumulator chloride 酸性氯化物
acid accumulator circulation 酸液循环
acid accumulator composition 酸液组成
acid accumulator dye(stuff) 酸性染料
acid accumulator extract 酸抽提
acid accumulator fastness 耐酸度
acid accumulator filter 滤酸器
acid accumulator fortitying system 酸液强化系统
acid accumulator free 无酸的,脱酸的,不含酸的
acid accumulator group 酸根(或基)
acid accumulator halide 酸性卤化物
acid accumulator insoluble lignin 酸不溶木素
acid accumulator lignin 酸木素
acid accumulator line 酸液管道
acid accumulator liquor 酸液
acid accumulator maker 制酸工
acid accumulator making 制酸
acid accumulator number 酸值
acid accumulator penetration 酸液渗透,酸液浸透
acid accumulator plant 制酸车间
acid accumulator preheater 酸液预热器
acid accumulator press (羊皮纸机用)压酸辊
acid accumulator proof enamel 防酸搪瓷
acid accumulator prmp 酸泵
acid accumulator recovery plant 酸液回收车间
acid accumulator reduction 酸性还原
acid accumulator resistance 耐酸性能,耐酸强度
acid accumulator resistant 耐酸合金
acid accumulator tesistant brick 耐酸砖
acid accumulator tesisting bronze 耐酸铜
acid accumulator resisting felt 耐酸毛毯
acid accumulator resisting mortar 耐酸灰泥
acid accumulator resisting paint 耐酸油漆
acid accumulator resisting steel 耐酸铜
acid accumulator resisting tile 耐酸砖
acid accumulator rosin size 酸性松香胶
acid accumulator settling basin 酸液澄清槽
acid accumulator salt 酸式盐
acid accumulator size 酸性施胶剂
acid accumulator soluble 酸溶(性)
acid accumulator soluble lignin 酸溶性木素
acid accumulator souring 酸处理
acid accumulator stable size 酸稳性施胶剂
acid accumulator storage 贮酸槽
acid accumulator strength 酸液浓度
acid accumulator sulfite 酸性亚硫酸盐
acid accumulator tank 酸槽
acid accumulator tower 制酸塔,酸塔
acid accumulator trap 分酸器
氢氰化物是另一气体的流出的在朝派cases,那里它未被为进一步使用-它罐是恢复烧过的.在电池限度内为生产 1,000千克纯粹丙烯腈过程经济学.Materials和公用事业被在1表中展示.副产品恢复被在桌子2氢氰化物存在中显示百分之99.5以上纯洁和不是必定进一步的几反作用的治疗的得到阿斯一气体是.acetonitrile是能从百分之70解决方案农产品收回在朝派一系列的蒸馏柱.montecatini爱迪生富人发展和测验商业上这样一列队前进地方 acetonitrile碰在一起潮流规格说明为几个我们i.e丁二烯摘取产品规格说明的丙烯腈公亩让步在朝派桌子3投资和资本费用有能力被估计从花费的0亿意大利的lire为a 120,000-公吨年种植这个工业股票列队前进和它的表现公亩随之发生的伸出工作在附近company’s工作人员在朝派实验室小规模试验性工厂列队前进设计在商业植物的出发和造成状况和经验的小心文雅它自己获得植物的在朝派运作之前,工程学.每丙烯腈的千克丙烯的特有的消耗右手击球员的左后方场地1.2千克为剩余物-所有的过程与一大约百分之66百分之的臼齿产量相符.这个为动手术按连续.this是的大工业起反应的人与一百分之70的按痣起反应的人产量相符在野派由于把催化剂活动和生活的小道具竖放.由于它的低体积密度,少量的催化剂公亩需要因此减少投资.the催化剂由于它的70-80wt./wt是低在朝派成本.百分之一硅石和中等活跃成分的成本和准备的安逸.每在各种各样过程步.original装置中消耗7千克农产品在附近热恢复和9.5千克之间丙烯腈存在一平衡的千克2.5千克的蒸汽消耗已经被发展和申请最好的最好热恢复和最好使用的冒蒸汽在朝派 the various columns. Complex equipment has been avoided in the purification section for easy and reliable operation . capital costs are not only affected by the number of columns ,but their simplicity , their size and construction materials must be considered Therefore ,the montecatint Edison process is competitive with other process .continuing studies are being made toward chemical and engineering improvement
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。