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Decision support for the development,simulation and optimization of dynamic process models

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Frontiers of Chemical Science and Engineering 2022年第2期16卷 210-220页

作者： Norbert Asprion Roger Böttcher Jan Schwientek Johannes Höller Patrick Schwartz Charlie Vanaret Michael Bortz basf SE 67063 LudwigshafenGermany Fraunhofer ITWM 67663 KaiserslauternGermany

Simulation is besides experimentation the major method for designing,analyzing and optimizing chemical *** ability of simulations to reflect real process behavior strongly depends on model *** and adaption of process models are usually based on available plant *** such a model in various simulation and optimization studies can support the process designer in his *** steady state models there is also a growing demand for dynamic models either to adapt faster to changing conditions or to reflect batch *** this contribution challenges of extending an existing decision support framework for steady state models to dynamic models will be discussed and the resulting opportunities will be demonstrated for distillation and reactor examples.

关键词： decision support multicriteria optimization model validation dynamic model sensitivity analysis

Characterisation of undigested components throughout the gastrointestinal tract of broiler chickens fed either a wheat-or maizebased diet

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Animal Nutrition 2022年第1期8卷 153-159页

作者： Eunjoo Kim Natalie K.Morgan Amy F.Moss Lily Li Peter Ader Mingan Choct School of Environmental and Rural Science University of New EnglandArmidaleNSW2351Australia basf South East Asia038987Singapore basf SE 68623LampertheimGermany

This study was to characterise the undigested nutrients present along the gastrointestinal tract of birds offered common wheat-or maize-based diets,with the goal of optimising utilisation of enzymes to enhance digestive ***-and maize-based diets were offered to 240 mixed-sex broilers(10 birds/pen;n=12)from 1 to 35 d *** of dry matter,starch,crude protein and nonstarch polysaccharides(NSP)were measured in the crop,gizzard,duodenum,jejunum,ileum,caeca and excreta at d 12 and 35 *** of nutrient levels in the excreta presented that more than 30%of nutrients provided in the feed was wasted,irrespective of wheat or maize diet *** average,92 g/kg crude protein,92 g/kg insoluble NSP and 14 g/kg oligosaccharides were not utilised by birds at d 12 *** quantity of water-insoluble NSP in the small intestine at d 12 was lower in birds offered the wheat-based diet compared to those fed the maize-based diet(P<0.05),with the reverse being true for water-soluble NSP(P<0.001).On average,84 g/kg crude protein,79 g/kg insoluble NSP and 9 g/kg oligosaccharides remained in the excreta at 35 d of *** this time period,accumulation of feed in the gizzard was noted for birds offered both diets,but was more pronounced in those offered the maize-based diet(P<0.001).Birds offered the maize-based diet demonstrated improved utilisation of oligosaccharides compared to those fed the wheat-based diet at both d 12 and 35(P=0.087 and P=0.047,respectively).Protein utilisation in the jejunum and ileum was greater in birds offered the wheat-based diet compared to those fed the maize-based diet(P=0.004 and P<0.001,respectively).Thus,while both diets supported standard growth performance of birds,the degree and flow of nutrient disappearance along the gastrointestinal tract was influenced by cereal type and bird age.

关键词： Broiler chicken Nutrient digestibility Undigested dietary component

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用于合成纤维及羊毛的basf染色助剂

印染 1996年第12期22卷 39-40页

作者：陈颖 basf公司

basf公司除了提供用于各种重要纤维(棉,粘胶、羊毛、丝绸、聚酰胺、聚酯、醋酯、聚丙烯腈纤维等)的染料外,还提供一系列广泛的染色助剂以帮助染色者获得匀染和高牢度的效果。用于聚酯(PES)染色的分散染料,由于其溶解性差,染浴中需添... 详细信息

basf公司除了提供用于各种重要纤维(棉,粘胶、羊毛、丝绸、聚酰胺、聚酯、醋酯、聚丙烯腈纤维等)的染料外,还提供一系列广泛的染色助剂以帮助染色者获得匀染和高牢度的效果。用于聚酯(PES)染色的分散染料,由于其溶解性差,染浴中需添加分散剂,如果染色工艺对染浴的分散稳定性至关重要的话,这一点尤为重要。例如低浴比染色时,紧密卷装的经轴染色或筒子纱染色,或液浴循环快的情况下。液体染料中分散剂的含量较低,因此有必要添加助剂。basf提供的分散剂Setamol^(?) WS(粉状)和Setamol BL(液状)不仅能保证染液分散体系在染色过程中的稳定性,而且能在染浴降温时,防止液体中残留染料颗粒的聚集。在用Palanil^R、Dispersol^(?)和Celliton^(?)对醋酯或三醋酯与聚酰胺混纺织物进行染色时,Setamol WS和Setamol BL被推荐用来洗除印迹,它可防止在水洗处理时掉落的染料被聚酰胺纤维吸附。由于Setamol WS和Setamol BL是阴离子性的,对阳离子染料(如 Basacryl^(?))具有亲合性,因此经常被用作水洗浴添加剂。

关键词：染色助剂合成纤维毛纤维应用

Organosilane surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance in the methanol-to-olefins reaction

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Frontiers of Chemical Science and Engineering 2020年第2期14卷 267-274页

作者： Hao Xu Chi Lei Qinming Wu Qiuyan Zhu Xiangju Meng Daniel Dai Stefan Maurer Andrei-Nicolae Parvulescu Ulrich Muller Fengshou Xiao Key Laboratory of Applied Chemistry of Zhejiang Province Department of ChemistryZhejiang UniversityHangzhou 310028China basf Catalysts(Shanghai)Co. Ltd.Shanghai 201206China basf SE Ludwigshafen 67056Germany

SSZ-39 zeolite with AEI framework structure is a good catalyst candidate for the methanol-to-olefins(MTO)***,the diffusion limitation and coke formation often results in fast deactivation of the SSZ-39 zeolite *** solution for this challenge is to introduce mesoporosity in the SSZ-39 ***,we report the synthesis of mesoporous SSZ-39 zeolite using an organosilane surfactant,,-dimethyl--(3-(trimethoxysilyl)propyl)octan-1-aminium chloride,as a mesopore template and,-dimethyl--2,6-dimethylpiperidinium as a micropore *** obtained zeolites were characterized by X-ray diffraction,N sorption,scanning electron microscopy,temperature programmed desorption of ammonia,and magic angle spinning nuclear magnetic resonance of *** results show that the mesoporous SSZ-39 zeolite has high crystallinity,meso/microporosity,high surface area,cuboid morphology,and abundant acidic *** importantly,this mesoporous SSZ-39 zeolite exhibits enhanced catalyst lifetime in the MTO reaction due to the presence of mesoporosity for fast mass transfer,compared with a conventional SSZ-39 zeolite without mesoporosity.

关键词： SSZ-39 zeolite mesopores organosilane surfactant MTO reaction soft template mass transfer

The flow of non-starch polysaccharides along the gastrointestinal tract of broiler chickens fed either a wheat-or maize-based diet

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Animal Nutrition 2022年第2期9卷 138-142页

作者： Eunjoo Kim Natalie K.Morgan Amy FMoss Lily Li Peter Ader Mingan Choct School of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia basf South East Asia 038987Singapore basf SE 68623LampertheimGermany

The present study characterised the types and amounts of non-starch polysaccharides(NSP)remaining undigested along the gastrointestinal tract(GIT)of broiler chickens offered a typical wheat-or maizebased ***-day old Cobb 500 mixed-sex chicks were assigned to 24 pens,with 10 birds/pen and 12 pens/*** were offered the experimental diets in 3 phases(starter,day 0 to 10;grower,day 11 to 24 and finisher,day 25 to 35).Excreta and digesta samples from the crop,gizzard,duodenum,jejunum,ileum and caeca were collected at 12 and 35 days of age,and analysed for the NSP *** wheat-based diet contained higher levels of soluble NSP than the maize-based diet,whereas insoluble NSP levels were similar between the 2 *** analysis of NSP constituents revealed that arabinoxylans were the primary NSP in the wheat-based diet,mostly in insoluble *** were the predominant NSP in the maize-based diet,followed by ***,birds offered the wheatbased diet presented higher levels of soluble NSP remaining in all gut sections compared to birds offered the maize-based diet,at both 12 and 35 days of age(P<0.050).Accumulation of insoluble NSP in the gizzard was noted in birds fed both diets,but was more pronounced in birds offered the maize-based diet compared to the wheat-based diet,at both 12 and 35 days of age(P<0.001).The present study highlights marked differences in the amounts and types of NSP delivered to the different gut sections when feeding wheat-compared to maize-based diets,particularly in the gizzard and the lower GIT of birds.

关键词： Broiler chickens Soluble fibre Insoluble fibre Non-starch polysaccharides

POLYMERS BEYOND THE YEAR 2000

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Chinese Journal of Polymer Science 2000年第3期18卷 207-208页

作者： Ingolf Buethe basf Aktiengesellschaft Research Engineering Plastics Ludwigshafen Germany

At the turn of the century, the global polymer industry is undergoing the most rapid and dramatic changes in itshistory. Emerging markets, particularly in Asia, and their polymer consumption are catching up with other parts of the world,creating new business opportunities. Economy of scale, combined with optimized logistic concepts, is becoming a keyeconomic success factor, thus forcing smaller suppliers out of business and creating a major hurdle for newcomers and theintroduction of new products. Globalization of polymer customers and cost pressure lead to a consolidation of suppliers andproducts. Today standard thermoplastics have a dominant position in the market and they will retain this position in *** thermoplastics are facing growing competition due to the increased efficiency of standard polymers. This leadsto a displacement process where standard polymers substitute engineering thermoplastics. Simultaneously engineeringpolymers are pushing into new markets or applications or displacing materials like glass, wood or metal. The recent historyand future trends have a strong impact on R&D activity in the polymer industry. Competition on a global scale andincreasing cost pressure are turning innovation into an essential precondition of commercial success, thus determining theobjectives of industrial polymer research and development.

关键词： Polymer research Thermoplastics Globalization World-scale capacity

Segregation of particulate solids: Experiments and DEM simulations

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Particuology 2014年第1期12卷 25-32页

作者： M.Combarros H.J.Feise H.Zetzener A.Kwade Institut für Partikeltechnik TU BraunschweigBraunschweig Germany basf SE Ludwigshafen Germany

Segregation of granular materials is a complex phenomenon, difficult to measure quantitatively and to predict. Discrete element method （DEM） can be a useful tool to predict segregation effects and to support the industrial design. In this context, a very challenging idea is the characterization of the granular solids to provide the key parameters needed for a successful DEM simulation of segregation processes. Rolling friction, sliding friction and the coefficient of restitution are the critical parameters to be studied. These microscopic simulation parameters are calibrated by comparing the macroscopic behavior of granular matter in standard bulk experiments, which have the advantage of being highly repeatable and reliable. An experimental method is presented to characterize free surface segregation. The effects of different particle properties, particularly, shape and size, on segregation of cohesionless materials were investi- gated. From the experiments, particle size demonstrated a stronger effect on segregation than particle shape. Finally, the corresponding DEM simulations of the segregation experiments were presented. The parameters obtained by calibration were validated by the comparison of the modeled segregation behav- ior with the experimental results. Thus, calibrated DEM simulations are capable of predicting segregation effects.

关键词： Bulk solidsParticle shapeSegregationDEMDiscrete element methodSilo

CHARACTERIZATION OF NANOSTRUCTURES:TOOLS AND CHALLENGES

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Chinese Journal of Polymer Science 2009年第1期27卷 77-83页

作者： G.Cox W.Wohlleben W.Schrepp Polymer Physics Dept. BASF SE67056 LudwigshafenGermany

Apart from long-known and applied nanostructures like carbon black for tyres or pigments for coatings nanotechnology has created highly sophisticated structures used for nano/molecular electronics,diagnostics,drug delivery, UV-absorbers *** the main question to be solved analytically is the local determination of tiny amounts of chemicals resulting in an ever increasing need for highly sensitive as well as locally resolved *** of techniques like mass spectroscopy,transmission elect...

关键词： Analytical ultracentrifugation Fuel cells Inorganic particles Nanostructures Surface energy

basf Battery Materials-Ovonic "Ni/MH Batteries:Choices for Energy Storage System"

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BASF Battery Materials-Ovonic "Ni/MH Batteries:Choices for E...