公开(公告)号：US20160194270A1

公开(公告)日：2016-07-07

申请号：US14916210

申请日：2014-09-01

Applicant: BASF SE

Inventor： Yuan Shen DAI ,  Katharina SPUHL ,  Renate HEMPEL

IPC: C07C201/16 ,  C07C201/08

CPC classification number: C07C201/16 ,  C07C201/08 ,  C07C205/06

Abstract: A process for the preparation of dintrotoluene which comprises (a) nitrating toluene with a nitrating acid, wherein said nitrating acid is a mixture of nitric acid and sulfuric acid, in one or more nitration steps, and separating the nitrating acid from the process stream thus formed, wherein a crude mixture comprising dinitrotoluene and a fraction of said nitrating acid dissolved therein is obtained, said crude mixture further comprising at least 50 ppm of HCN, and (b) washing the crude dinitrotoluene containing mixture in one or more washing steps, wherein, before the first washing step is carried out, the crude mixture is distilled and/or stripped to remove HCN therefrom, wherein a crude dinitrotoluene containing mixture which is essentially free of HCN is obtained.

Abstract translation: 一种制备二苯并芴的方法，其包括（a）在一个或多个硝化步骤中将硝酸与硝酸反应，其中所述硝酸是硝酸和硫酸的混合物，并将硝酸与工艺流分离，因此 形成，其中获得包含二硝基甲苯和所述硝酸的一部分溶解在其中的粗混合物，所述粗混合物还包含至少50ppm的HCN，和（b）在一个或多个洗涤步骤中洗涤含有二硝基甲苯的粗混合物，其中 ，在进行第一洗涤步骤之前，将粗混合物蒸馏和/或汽提以从其中除去HCN，其中获得基本上不含HCN的粗二硝基甲苯混合物。

公开(公告)号：US09346012B2

公开(公告)日：2016-05-24

申请号：US14300504

申请日：2014-06-10

Applicant: Bayer MaterialScience LLC ,  Bayer MaterialScience AG

Inventor： Bernd Pennemann ,  Ulrich Westphal ,  Dieter Foertsch ,  Spotswood Miller

IPC: C07C209/00 ,  B01D53/56 ,  B01D53/77 ,  C07C209/32 ,  C07C209/76 ,  C07C201/08 ,  C07C209/36

CPC classification number: B01D53/56 ,  B01D53/77 ,  C07C201/08 ,  C07C209/32 ,  C07C209/36 ,  C07C209/76 ,  C07C209/34 ,  C07C211/49 ,  C07C211/47 ,  C07C205/06 ,  C07C211/46

Abstract: The invention relates to a method for reducing the concentration of nitrogen oxides in waste gases released dating the production of organic amino compounds, wherein an organic compound is first reacted with NOx and/or nitric acid to form an organic nitro compound with the formation of an NOx-containing waste gas stream and the organic nitro compound is converted to the organic ammo compound by means of hydrogen-containing reaction gas, the reaction of the organic nitro compound with the hydrogen-containing reduction gas taking place with the formation of a hydrogen-containing waste gas stream, the method being characterised in that the NOx-containing waste gas stream is combined with the hydrogen-containing waste gas stream and/or an externally supplied hydrogen stream and is reacted at a temperature of 800 to 1700° C. for the at least partial reduction of the NOx concentration. The invention additionally relates to an apparatus for carrying out the method.

Abstract translation: 本发明涉及一种用于降低生产有机氨基化合物释放的废气中的氮氧化物浓度的方法，其中有机化合物首先与NO x和/或硝酸反应以形成有机硝基化合物，形成 含有NOx的废气流和有机硝基化合物通过含氢反应气体转化为有机氨基化合物，有机硝基化合物与含氢还原气体的反应发生，形成氢 - 该方法的特征在于，将含NO x的废气流与含氢废气流和/或外部供应的氢气流合并，并在800至1700℃的温度下反应，以便 NOx浓度的至少部分降低。 本发明还涉及一种用于执行该方法的装置。

公开(公告)号：US20160075582A1

公开(公告)日：2016-03-17

申请号：US14784443

申请日：2014-04-15

Applicant: BAYER MATERIALSCIENCE AG

Inventor： Thomas Knauf ,  Antoni Mairata ,  Erik Sluyts ,  Jan Van Tricht

IPC: C02F9/00 ,  C07C201/08

CPC classification number: C02F9/00 ,  C02F1/025 ,  C02F1/20 ,  C02F1/66 ,  C02F2101/16 ,  C02F2101/322 ,  C02F2101/38 ,  C02F2103/18 ,  C02F2103/36 ,  C02F2301/066 ,  C07C201/08 ,  C07C201/16 ,  C07C205/06

Abstract: The present invention provides a process for working up alkaline waste water which is formed during washing of crude nitrobenzene obtained by nitration of benzene, wherein(i) the alkaline waste water is heated to a temperature of from 150° C. to 500° C. under an increased pressure with respect to atmospheric pressure with exclusion of oxygen;(ii) a base is added to the waste water obtained in (i); and(iii) the waste water obtained in (ii) is purified further by stripping with a stripping gas and the stripping gas strewn loaded with impurities is then cooled to a temperature of from 10° C. to 60° C.

Abstract translation: 本发明提供一种处理在通过硝化苯获得的粗硝基苯洗涤过程中形成的碱性废水的方法，其中（i）将碱性废水加热至150℃至500℃的温度。 在相对于排除氧气的大气压力的增加的压力下; （ii）向（i）中获得的废水中加入碱; 和（iii）通过汽提气体进一步纯化在（ii）中获得的废水，并将载有杂质的汽提气体冷却至10℃至60℃的温度。

公开(公告)号：US09284255B2

公开(公告)日：2016-03-15

申请号：US14413277

申请日：2013-07-23

Applicant: Bayer MaterialScience AG

Inventor： Thomas Knauf ,  Alexandre Racoes ,  Wolfgang Dohmen ,  Antoni Mairata

IPC: C07C201/00 ,  C07C201/06 ,  C07C201/08

CPC classification number: C07C201/06 ,  C07C201/08 ,  C07C205/06

Abstract: The invention relates to an adiabatic process for producing nitrobenzene by nitrating benzene with sulphuric acid mixtures and nitric acid mixtures using a stoichiometric excess of benzene and reusing non-reacted benzene, the content of the aliphatic organic compounds in the feed benzene being limited, by the targeted evacuation of aliphatic organic compounds to at least one step in the process, to a content of less than 1.5 mass-%, in relation to the total amount of feed benzene.

Abstract translation: 本发明涉及通过使用化学计量过量的苯用硝酸混合物和硝酸混合物硝化苯并重新使用未反应的苯来生产硝基苯的绝热方法，所述进料苯中的脂肪族有机化合物的含量受到限制， 将脂肪族有机化合物定向排出至该步骤中的至少一个步骤，其含量相对于进料苯的总量小于1.5质量％。

公开(公告)号：US09260377B2

公开(公告)日：2016-02-16

申请号：US14415788

申请日：2013-07-23

Applicant: Bayer MaterialScience AG

Inventor： Thomas Knauf ,  Michael Merkel ,  Antoni Mairata

IPC: C07C201/06 ,  C07C201/08

CPC classification number: C07C201/06 ,  C07C201/08 ,  C07C205/06

Abstract: The invention provides a continuous adiabatic process for the preparation of nitrobenzene by nitrating benzene with mixtures of sulfuric and nitric acids using a stoichiometric excess of benzene, wherein the content of organic compounds in the circulating sulfuric acid, at least during the start-up period of the production plant, is always kept below 1.0 mass percent, based on the total mass of circulating sulfuric acid. This is preferably achieved by a procedure in which, either after the end or before the beginning of a production cycle, the circulating sulfuric acid is circulated at elevated temperature so that the organics contained in the sulfuric acid, preferably comprising nitrobenzene and traces of benzene, dinitrobenzene and nitrophenols, are separated off in the evaporation apparatus for concentrating the sulfuric acid.

Abstract translation: 本发明提供了一种连续的绝热方法，用于通过使用化学计量过量的苯将硫与硝酸的混合物硝化苯来制备硝基苯，其中循环硫酸中有机化合物的含量至少在启动期间 基于循环硫酸的总质量，生产厂总是保持在1.0质量％以下。 这优选通过以下程序来实现，其中，在生产周期结束或开始之前循环硫酸在升高的温度下循环，使得包含在硫酸中的有机物，优选包含硝基苯和痕量的苯， 二硝基苯和硝基苯酚在用于浓缩硫酸的蒸发装置中分离出来。

公开(公告)号：US20150376111A1

公开(公告)日：2015-12-31

申请号：US14768391

申请日：2014-04-25

Applicant: BASF SE

Inventor： Ralf BOEHLING ,  Michael HAYER ,  Alwin REHFINGER ,  Michael SCHELPER ,  Johann-Peter MELDER ,  Martin ERNST ,  Joaquim Henrique TELES

IPC: C07C201/08

CPC classification number: C07C201/08 ,  B01J19/0093 ,  B01J2219/00792 ,  B01J2219/00795 ,  B01J2219/00824 ,  B01J2219/00826 ,  B01J2219/00831 ,  B01J2219/00835 ,  B01J2219/00842 ,  B01J2219/0086 ,  B01J2219/00867 ,  B01J2219/00873 ,  B01J2219/00889 ,  B01J2219/00891 ,  Y02P20/582 ,  C07C205/02

Abstract: The invention relates to a process for preparing nitroalkanes by reaction of at least one alkane with at least one nitrating agent in the gas phase, wherein the nitration is carried out in a microstructured reaction zone having parallel channels having hydraulic diameters of less than 2.5 mm and a total specific internal surface area of more than 1600 m2/m3 and the alkane and the nitrating agent are conveyed under a pressure of from 1 bar to 20 bar through the reaction zone and reacted at a temperature of from 150° C. to 650° C. and the reaction products are cooled downstream of the reaction zone and discharged and the at least one nitrating agent is introduced over from two to ten introduction points along the reaction zone.

Abstract translation: 本发明涉及通过在气相中至少一种烷烃与至少一种硝化剂反应来制备硝基烷烃的方法，其中硝化在具有水力直径小于2.5mm的平行通道的微结构反应区中进行，以及 超过1600m 2 / m 3的总比表面积和烷烃和硝化剂在1巴-20巴的压力下通过反应区输送，并在150℃至650℃的温度下反应 并且反应产物在反应区的下游冷却并排出，并且将至少一种硝化剂沿着反应区引入二至十个引入点。

公开(公告)号：US20150329469A1

公开(公告)日：2015-11-19

申请号：US14653687

申请日：2013-12-10

Applicant: BASF SE ,  SHANGHAI BASF POLYURETHANE COMPANY LIMITED

Inventor： Yuanshen DAI ,  Da Peng LI ,  Pei Shi JIA ,  Zhan CAI ,  Samuel NETO

IPC: C07C201/08

CPC classification number: C07C201/08 ,  B01D17/0217 ,  C07C201/16 ,  C07C205/06

Abstract: Proposed is a separation method in a toluene to dinitrotoluene process, wherein said method with a first process step comprising feeding a toluene comprising first stream (1) and a nitric acid comprising second stream (2) into a first reactor (R1), re acting of the toluene comprising first stream (1) and the nitric acid comprising second stream (2) within the first reactor (R1) to a first reaction mixture (3), said first reaction mixture (3) comprising a first liquid/liquid mixed phase of an acid phase and an organic in phase comprising mononitrotoluene, feeding the first reaction mixture (3) into a first separation device (S1), separating the first reaction mixture (3) within the first separation device (S1) into a first forward stream (4) having a flow direction to a second process step and a first backward stream (5) having a flow direction back to the first reactor (R1), said method having a second process step comprising feeding the first forward stream (4) into a second reactor (R2), feeding a nitric acid comprising third stream (6) and a sulfuric acid comprising fourth stream (7) into the second reactor (R2), reacting of the first forward stream (4), the nitric acid comprising third stream (6) and the sulfuric acid comprising fourth stream (7) within the second reactor (R2) to a second reaction mixture (8), said second reaction mixture (8) comprising a second liquid/liquid mixed acid phase and an organic phase comprising mononitrotoluene and dinitrotoluene, feeding the second reaction mixture (8) into a second separation device (S2), separating the second reaction mixture (8) within the second separation device (S2) into a second forward stream (9) having a flow direction to a process output and a second backward stream (10) having a flow direction back to the first reactor (R1), wherein fine separating of at least one of the streams (4, 5, 9,10) after the first separation step (S1) and/or the second separation step (S2) in a coalescer is carried out.

公开(公告)号：US20150166461A1

公开(公告)日：2015-06-18

申请号：US14628362

申请日：2015-02-23

Applicant: BASF SE

Inventor： Wolfgang MACKENROTH ,  Johannes BUETTNER ,  Eckhard STROEFER ,  Wolfgang VOIGT ,  Frank BOK

IPC: C07C201/08

CPC classification number: C07C201/08 ,  C07C205/06

Abstract: A process for the preparation of mononitroaromatics and dinitroaromatics, in which a hydrate melt of at least one metal nitrate M(NO3)3 is used as a nitrating medium, it being possible for M to be the metals Fe, Cr, Y, La, Ce, Al, Bi and In, and the metal nitrate having a water content of from 4 to 9 mol of water per M(NO3)3, leads to simplifications of the process and improved yields.

Abstract translation: 一种制备单硝基芳族化合物和二硝基溴化物的方法，其中使用至少一种金属硝酸盐M（NO 3）3的水合物熔融物作为硝化介质，M可以是金属Fe，Cr，Y，La， Ce，Al，Bi和In，每M（NO 3）3含水量为4〜9mol的金属硝酸盐导致工艺的简化和提高的产率。

公开(公告)号：US20150166460A1

公开(公告)日：2015-06-18

申请号：US14415794

申请日：2013-07-23

Applicant: Bayer MaterialScience AG

Inventor： Thomas Knauf ,  Michael Merkel

IPC: C07C201/08 ,  C07C201/16

CPC classification number: C07C201/08 ,  C07C201/16 ,  C07C205/06

Abstract: The present invention provides a continuous process for the production of nitrobenzene by nitration of benzene with mixtures of sulfuric and nitric acid using a stoichiometric excess of benzene, in which the content of aliphatic organic compounds in the feed benzene during the start-up period of the production plant is always maintained at less than 1.5 wt. %, based on the total mass of the feed benzene. This is achieved either by mixing the feed benzene comprising recycled unreacted benzene (recycled benzene) and benzene newly supplied to the reaction (fresh benzene) in appropriate quantitative ratios during the start-up period, depending on the purity of the two streams, or by completely omitting the recycling of unreacted benzene during the start-up period, i.e. the feed benzene consists only of benzene newly supplied to the reaction.

Abstract translation: 本发明提供了一种使用化学计量过量的苯硝化苯与硫酸和硝酸的混合物来生产硝基苯的连续方法，其中在起始时期的进料苯中的脂族有机化合物的含量 生产厂总是维持在1.5重量％以下。 ％，基于进料苯的总质量。 这可以通过在启动期间将包含再循环的未反应苯（再循环苯）和新提供给反应的苯（新鲜苯）的进料苯与合适的定量比例混合，取决于两个流的纯度，或者通过 在启动期间完全省略未反应苯的再循环，即进料苯仅由新提供给反应的苯组成。

公开(公告)号：US20150094501A1

公开(公告)日：2015-04-02

申请号：US13948491

申请日：2013-07-23

Applicant: Daniel M. Trauth ,  Richard L. James

Inventor： Daniel M. Trauth ,  Richard L. James

IPC: C07C201/08

CPC classification number: C07C201/08 ,  C07C201/12 ,  C07C209/34 ,  C07C239/10 ,  C07D263/04 ,  Y02P20/582 ,  C07C205/02 ,  C07C205/15 ,  C07C211/08

Abstract: Provided is a process for the formation of 2-nitropropane and/or 2,2-dinitropropane by the nitration of propane with dilute nitric acid.

Abstract translation: 提供了通过用稀硝酸硝化丙烷来形成2-硝基丙烷和/或2,2-二硝基丙烷的方法。