公开(公告)号：US4481012A

公开(公告)日：1984-11-06

申请号：US514544

申请日：1983-07-18

申请人： Raffaele di Pietro ,  Alberto Paggini ,  Vincenzo Lagana'

发明人： Raffaele di Pietro ,  Alberto Paggini ,  Vincenzo Lagana'

IPC分类号： C07C31/02 ,  B01J23/26 ,  B01J23/80 ,  B01J23/86 ,  C07C27/00 ,  C07C27/06 ,  C07C29/15 ,  C07C29/151 ,  C07C29/153 ,  C07C29/154 ,  C07C31/00 ,  C07C67/00 ,  C10L1/02 ,  C10L1/182 ,  C10L1/18

CPC分类号： C10L1/023 ,  B01J23/26 ,  B01J23/80 ,  B01J23/868 ,  C07C29/1512 ,  C07C29/1516 ,  C07C29/153 ,  C07C29/154 ,  Y02P20/52

摘要： A process for the production of a mixture of methanol and higher alcohols of "fuel grade" from CO and H.sub.2.To reduce the water content in the mixture coming from the synthesis reactor of the synthesis of the alcohols, the reaction product is cooled down and is fed to a secondary reactor wherein the conversion reactionCO+H.sub.2 O.revreaction.CO.sub.2 +H.sub.2is carried on in conditions near to equilibrium.The further product of reaction is cooled in a more thorough manner so as to obtain a liquid phase constituted by the "fuel grade" mixture of alcohols and a gaseous phase which after the discharge of the inert substances and after elimination of the CO.sub.2 is recycled to the synthesis reactor.In the secondary conversion reactor operation is carried out with a temperature comprised between 150.degree. C. and 250.degree. C., at a pressure equal to that of the synthesis reactor and in the presence of a copper catalyst.

摘要翻译： 一种从CO和H2生产“燃料级”的甲醇和高级醇的混合物的方法。 为了降低来自合成反应器的混合物中的含水量，将反应产物冷却并送入二次反应器，其中转化反应CO + H 2 O→CO 2 + H 2进行 在接近平衡的条件下。 进一步的反应产物以更彻底的方式冷却，以获得由醇和气相的“燃料级”混合物构成的液相，在惰性物质排出之后并且将二氧化碳排除后再循环至 合成反应器。 在二次转化反应器中，在150℃和250℃之间的温度下，在与合成反应器相同的压力下和在铜催化剂存在下进行操作。

公开(公告)号：US4376717A

公开(公告)日：1983-03-15

申请号：US215167

申请日：1980-12-11

申请人： Vincenzo Lagana' ,  Francesco Saviano ,  Piero Bisi

发明人： Vincenzo Lagana' ,  Francesco Saviano ,  Piero Bisi

IPC分类号： C01B3/36 ,  C01B3/02 ,  C01B3/26 ,  C01B3/34 ,  C01B3/38 ,  C01B2/30

CPC分类号： C01B3/34

摘要： An improved process is disclosed for preparing gases containing hydrogen and nitrogen and which is especially suitable for the synthesis of ammonia. Using natural gas or virgin naphtha as the starting materials, the reforming reaction with steam takes place in two serially arranged stages, the first of which occurs at an inlet temperature of from 400.degree. C. to 650.degree. C. and an exit temperature of from 650.degree. C. to 750.degree. C., a conversion of from 20% to 50% being effected, the second stage working at an exit temperature of from 750.degree. C. to 850.degree. C. and the conversion being increased up to 70%. Air reforming is carried out under conditions at which the exit temperature of the gas is between 920.degree. C. and 1050.degree. C. and the sensible heat of the effluent gases from the air reforming at such temperature condition is employed to activate the second steam reforming stage. Tube bundle heat-exchangers, the tubes of which are filled with an appropriate catalyst, are used.

摘要翻译： 公开了一种用于制备含有氢和氮的气体并且特别适用于合成氨的改进方法。 使用天然气或原始石脑油作为原料，与蒸汽的重整反应在两个连续排列的阶段进行，第一个阶段在入口温度为400℃至650℃，出口温度为 650℃至750℃，转化率为20％至50％，第二阶段在出口温度为750℃至850℃下工作，转化率提高至70％ 。 空气重整在气体的出口温度在920℃至1050℃的条件下进行，并且在这种温度条件下来自空气重整的流出气体的显热被用于激活第二蒸汽重整 阶段。 使用管束热交换器，其管装有合适的催化剂。

公开(公告)号：US4327068A

公开(公告)日：1982-04-27

申请号：US234159

申请日：1981-02-13

申请人： Vincenzo Lagana ,  Umberto Zardi

发明人： Vincenzo Lagana ,  Umberto Zardi

IPC分类号： C01C1/04 ,  C01B3/02 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/10

CPC分类号： C01B3/025 ,  C07C273/10

摘要： A method is disclosed for reusing the processing condensates in a combined plant for the production of ammonia and urea. The condensates are combined into a single stream, filtered to remove the solid substances in suspension, if any, and fed to a boiler for the production of steam while exploiting the sensible heat. Pollution of sewage waters is prevented while obtaining a considerable economy in the running costs.

摘要翻译： 公开了一种用于在用于生产氨和尿素的组合设备中重新使用处理冷凝物的方法。 将冷凝物组合成单一流，过滤以除去悬浮液中的固体物质（如果有的话），并且在利用显热的同时将其送入锅炉中以产生蒸汽。 防止污水污染，同时在运行成本方面获得相当大的经济效益。

公开(公告)号：US4291006A

公开(公告)日：1981-09-22

申请号：US059217

申请日：1979-07-20

申请人： Giorgio Pagani ,  Vincenzo Lagana ,  Francesco Saviano

发明人： Giorgio Pagani ,  Vincenzo Lagana ,  Francesco Saviano

IPC分类号： C01C1/04 ,  C07C273/10

CPC分类号： C01C1/0488 ,  C07C273/10 ,  Y02P20/52

摘要： In an integrated or combined process for the production of ammonia and urea, the improvement consisting in that the absorption of CO.sub.2 from the raw gas going to the synthesis reactor for ammonia is carried out with an absorption apparatus which is divided into two sections, one being of the plate type and the other of the thin film type. The predominant fraction of CO.sub.2 is stripped in the thin-film section, the remainder in the adiabatic plate section.

摘要翻译： 在用于生产氨和尿素的综合或组合方法中，改进包括从进入氨的合成反应器的原料气体吸收CO 2，其中吸收装置分为两部分，一个是 的板型，另一种为薄膜型。 在薄膜部分剥离CO 2的主要部分，其余部分在绝热板部分中。

公开(公告)号：US4235816A

公开(公告)日：1980-11-25

申请号：US18729

申请日：1979-03-08

申请人： Vincenzo Lagana ,  Francesco Saviano

发明人： Vincenzo Lagana ,  Francesco Saviano

IPC分类号： C07C273/10 ,  C07C126/00

CPC分类号： C07C273/10

摘要： An integrated ammonia-urea process is disclosed which uses as the starting gas mixture a stream coming, for example, from steam reforming of hydrocarbons, carbon dioxide being stripped from the stream by the action of a very concentrated ammonia solution (above 70% by wt) first and the the action of an ammoniated solution of ammonium carbonate secondly, a solution of ammonium carbamate being obtained together with a gas stream composed of nitrogen and hydrogen; sending the carbamate solution to the urea reactor, discharging from the urea reactor the urea solution containing unconverted carbamate and excess ammonia, decomposing said carbamate and sending evolved ammonia to the urea reactor again along with carbon dioxide, discharging the urea solution having now 50% of the original carbamate to an adiabatic stripper in which the stripping gas is essentially composed of hydrogen and nitrogen, removing ammonia and carbon dioxide with water from the adiabatic stripper and condensing ammonia and carbon dioxide by heat exchange, sending the stream of hydrogen and nitrogen to methanization and ammonia synthesis and concentrating the urea solution directly until obtaining a urea melt.

摘要翻译： 公开了一种综合的氨 - 尿素方法，其用作起始气体混合物，例如来自烃的蒸汽重整的物流，通过非常浓缩的氨溶液（高于70重量％ ）和氨化氨化碳酸铵溶液的作用二次，将氨基甲酸铵溶液与由氮和氢组成的气流一起获得; 将氨基甲酸酯溶液送到尿素反应器，从尿素反应器中排出含有未转化的氨基甲酸酯和过量氨的尿素溶液，分解所述氨基甲酸酯并再次将二氧化碳排放到尿素反应器中，将现有的50％ 将原始氨基甲酸酯转化成绝热汽提塔，其中汽提气体基本上由氢气和氮气组成，用绝热汽提塔的水除去氨和二氧化碳，并通过热交换冷凝氨和二氧化碳，将氢气和氮气送入甲烷化 和氨合成并直接浓缩尿素溶液直到获得尿素熔体。

公开(公告)号：US4134939A

公开(公告)日：1979-01-16

申请号：US724601

申请日：1976-09-20

申请人： Umberto Zardi ,  Vincenzo Lagana'

发明人： Umberto Zardi ,  Vincenzo Lagana'

IPC分类号： B01D3/32 ,  B01D1/06 ,  B01D3/00 ,  B01D53/18 ,  B01J4/00 ,  B01J10/02 ,  F28C3/06 ,  F28D3/00 ,  F28D3/04 ,  F28F9/22 ,  F28F25/02 ,  B01F3/04

CPC分类号： F28D3/04 ,  B01D1/065 ,  B01D53/18 ,  B01J10/02

摘要： A distributor of liquid is disclosed, to be used in chemical apparatus having a bundle of tubes in the interior of which the liquid to be treated is distributed in the form of a thin film flowing on the internal surfaces of the tubes, the improvement consisting in the combination of a bell placed on the top surface of the tube plate and having liquid passageways formed along its bottom edge, a foraminous collar-like component placed at the bell top for feeding the liquid, and a plurality of distribution sleeves having the form of tubes through the sidewalls of which tangential bores are formed, there being one distribution sleeve for each tube of the bundle.

摘要翻译： 公开了一种液体分配器，用于具有一束管的化学设备中，其内部的待处理液体以在管的内表面上流动的薄膜的形式分布，其改进包括 设置在管板顶表面上并具有沿其底边缘形成的液体通道的钟形的组合，放置在钟表顶部用于供给液体的多孔的套状部件，以及多个分配套筒， 管穿过其切口孔的侧壁，存在用于束的每个管的一个分配套筒。

公开(公告)号：US3984469A

公开(公告)日：1976-10-05

申请号：US477048

申请日：1974-06-06

申请人： Mario Guadalupi ,  Umberto Zardi ,  Vincenzo Lagana

发明人： Mario Guadalupi ,  Umberto Zardi ,  Vincenzo Lagana

IPC分类号： C07C273/04 ,  C07C126/00

CPC分类号： C07C273/04 ,  Y02P20/142

摘要： A process for producing urea from CO.sub.2 and NH.sub.3 in which the CO.sub.2 and NH.sub.3 are reacted in a reactor, the reaction product is passed into a first stage decomposer maintained at the same pressure as the reactor, the reaction product is contacted in the first stage decomposer with NH.sub.3 to form a urea solution substantially free of CO.sub.2, said urea solution substantially free of CO.sub.2 is passed from the first stage decomposer to a second stage decomposer also maintained at the same pressure as the reactor and is contacted in said second stage decomposer with a stream of inert gas and an aqueous solution of substantially pure urea is withdrawn from the second reactor.

摘要翻译： 在CO 2和NH 3中生成尿素的方法，其中CO 2和NH 3在反应器中反应，将反应产物进入与反应器保持相同压力的第一级分解器中，使反应产物在第一级分解器 用NH 3形成基本上不含CO 2的尿素溶液，所述基本上不含CO 2的尿素溶液从第一阶段分解器通到也保持与反应器相同压力的第二阶段分解器，并在第二阶段分解器中与 惰性气体流和基本上纯的尿素水溶液从第二反应器中排出。

公开(公告)号：US4983187A

公开(公告)日：1991-01-08

申请号：US293092

申请日：1989-01-03

申请人： Vincenzo Lagana ,  Dario Ercolani ,  Elio Donati

发明人： Vincenzo Lagana ,  Dario Ercolani ,  Elio Donati

IPC分类号： F23K1/02 ,  C10L1/32

CPC分类号： C10L1/326

摘要： A method is described for preparing a high-concentration solids suspension, in particular coal or petroleum coke, which can be transported by pipe and be burnt with low emission of harmful substances, comprising crushing the solid to be suspended to a maximum particle size of 6 mm and then grinding it in the presence of additives in aqueous solution to a maximum solid particle size of 300 .mu.m, the method being characterized by adding, either before the crushing or immediately before the grinding, a desulphurizer chosen from CaCo.sub.3, MgCO.sub.3 and dolomite, either alone or in mixture, in a molar ratio to the sulphur contained in the solid of between 1.5 and 3, and adding immediately before or during grinding a desulphurizer also possessing stabilizing and anticorrosive properties and chosen from MgO, Mg(OH).sub.2, CaO and Ca(OH).sub.2, either alone or in mixture, in a quantity of between 0.04 and 0.4% by weight of the final suspension.

公开(公告)号：US4915841A

公开(公告)日：1990-04-10

申请号：US220077

申请日：1988-07-18

申请人： Vincenzo Lagana' ,  Angiolo Farneti ,  Angelo Bassetti

发明人： Vincenzo Lagana' ,  Angiolo Farneti ,  Angelo Bassetti

IPC分类号： C02F3/04 ,  C02F3/06 ,  C02F3/28 ,  C02F3/30 ,  C02F3/34

CPC分类号： C02F3/2846 ,  C02F3/04 ,  C02F3/06 ,  C02F3/2806 ,  C02F3/302 ,  Y02E50/343 ,  Y02W10/15

摘要： Process for the psychrophilic biological purification of waste waters having medium-low concentrations of polluting substances. The process comprises a first anaerobic treatment step with an expanded mud bed of U.A.S.B. type at a low flow rate, a second treatment step comprising a fluid-bed treatment on a fine support at a high flow rate, and a final treatment step comprising anaerobic treatment for the nitrification and oxydation of the various substances reduced in the previous treatments. The flow is then recycled to the upstream steps for the removal of possible nutrients, such as nitrogen and phosphorus.

公开(公告)号：US4469492A

公开(公告)日：1984-09-04

申请号：US347076

申请日：1982-02-08

申请人： Vincenzo Lagana ,  Virginio Cavallanti

发明人： Vincenzo Lagana ,  Virginio Cavallanti

IPC分类号： B01D53/14 ,  C07D301/32 ,  B01D47/00

CPC分类号： C07D301/32 ,  B01D53/1487

摘要： This invention relates to a process for the isothermal absorption of the ethylene oxide contained in the gas from an ethylene oxide production plant.This process is characterized in that the gas is firstly cooled to a temperature of between 5.degree. and 60.degree. C., and is then fed at a pressure which can vary from 1 to 30 atm. to a water-fed isothermal film absorber, from the bottom of which is obtained a high concentration ethylene oxide solution which can be fed directly to a glycol production plant after recovering the ethylene still in solution.By using this process, the absorption plant is simplified compared with known processes, and steam, electricity and cooling water consumption are considerably reduced.

摘要翻译： 本发明涉及一种环氧乙烷生产设备气体中所含环氧乙烷的等温吸收方法。 该方法的特征在于首先将气体冷却至5℃至60℃的温度，然后以1至30atm的压力进料。 到一个给水的等温膜吸收器，从其底部获得高浓度的环氧乙烷溶液，其可以在还原在溶液中的乙烯回收之后直接进料到二醇生产设备。 通过使用该方法，与已知的方法相比，吸收装置被简化，蒸汽，电力和冷却水消耗大大降低。