scholarly journals Innovation in Continuous Rectification for Tequila Production

Processes ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 283
Author(s):  
Estarrón-Espinosa Mirna ◽  
Ruperto-Pérez Mariela ◽  
Padilla-de la Rosa José Daniel ◽  
Prado-Ramírez Rogelio
Keyword(s):  
Energy Savings ◽  
Distillation Process ◽  
Distillation Columns ◽  
Continuous Rectification ◽  
New Process ◽  
Volatile Profiles ◽  
First Time ◽  
Continuous Distillation ◽  
Manual Mode ◽  
Rectification Process

In this study, a new process of continuous horizontal distillation at a pilot level is presented. It was applied for the first time to the rectification of an ordinario fraction obtained industrially. Continuous horizontal distillation is a new process whose design combines the benefits of both distillation columns, in terms of productivity and energy savings (50%), and distillation stills in batch, in terms of the aromatic complexity of the distillate obtained. The horizontal process of continuous distillation was carried out at the pilot level in a manual mode, obtaining five accumulated fractions of distillate that were characterized by gas chromatography (GC-FID). The tequila obtained from the rectification process in this new continuous horizontal distillation process complies with the content of methanol and higher alcohols regulated by the Official Mexican Standard (NOM-006-SCFI-2012). Continuous horizontal distillation of tequila has potential energy savings of 50% compared to the traditional process, besides allowing products with major volatile profiles within the maximum limits established by the regulation for this beverage to be obtained.

scholarly journals Analysis of Different Pressure Thermally Coupled Extractive Distillation Column

2014 ◽  
Vol 8 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Lanyi Sun ◽  
Kang He ◽  
Yuliang Liu ◽  
Qiuyuan Wang ◽  
Dingding Wang
Keyword(s):  
Sensitivity Analysis ◽  
Distillation Column ◽  
Extractive Distillation ◽  
Total Annual Cost ◽  
Operating Parameters ◽  
The Novel ◽  
Economic Aspects ◽  
Distillation Process ◽  
Aqueous Acetonitrile ◽  
New Process

In this contribution, a different pressure thermally coupled extractive distillation process has been applied on the separation of propylene and propane with aqueous acetonitrile (ACN) solution as entrainer. The novel distillation pro-cess integration is the combination of different pressure thermally coupled distillation (DPTCD) and extractive distillation (ED). Both the new process and the conventional process have been simulated in Aspen Plus. Sensitivity analysis has been conducted to select an appropriate compression ratio and other operating parameters based on the priority that the propylene product purity is 99.2 wt % and less energy consumption. The influence of the proposed distillation column on energetic and economic aspects is evaluated through intensive comparison against the conventional stand-alone column, and better performance is achieved with up to 46.02% energy saving and close to 9.7% saving in total annual cost (TAC).

scholarly journals The homogenous alternative to biomineralization: Zn- and Mn-rich materials enable sharp organismal “tools” that reduce force requirements

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. M. S. Schofield ◽  
J. Bailey ◽  
J. J. Coon ◽  
A. Devaraj ◽  
R. W. Garrett ◽  
...  
Keyword(s):  
Abrasion Resistance ◽  
Energy Savings ◽  
Impact Resistance ◽  
Atom Probe ◽  
Nanometer Scale ◽  
Time Loss ◽  
Protein Residues ◽  
Mandibular Teeth ◽  
First Time ◽  
Measured Hardness

AbstractWe measured hardness, modulus of elasticity, and, for the first time, loss tangent, energy of fracture, abrasion resistance, and impact resistance of zinc- and manganese-enriched materials from fangs, stings and other “tools” of an ant, spider, scorpion and nereid worm. The mechanical properties of the Zn- and Mn-materials tended to cluster together between plain and biomineralized “tool” materials, with the hardness reaching, and most abrasion resistance values exceeding, those of calcified salmon teeth and crab claws. Atom probe tomography indicated that Zn was distributed homogeneously on a nanometer scale and likely bound as individual atoms to more than ¼ of the protein residues in ant mandibular teeth. This homogeneity appears to enable sharper, more precisely sculpted “tools” than materials with biomineral inclusions do, and also eliminates interfaces with the inclusions that could be susceptible to fracture. Based on contact mechanics and simplified models, we hypothesize that, relative to plain materials, the higher elastic modulus, hardness and abrasion resistance minimize temporary or permanent tool blunting, resulting in a roughly 2/3 reduction in the force, energy, and muscle mass required to initiate puncture of stiff materials, and even greater force reductions when the cumulative effects of abrasion are considered. We suggest that the sharpness-related force reductions lead to significant energy savings, and can also enable organisms, especially smaller ones, to puncture, cut, and grasp objects that would not be accessible with plain or biomineralized “tools”.

Simulation and Optimization of High-Purity Trichlorosilane Distillation Process with Analysis of Material Properties

2013 ◽  
Vol 675 ◽  
pp. 196-199
Author(s):  
Yuan Di Zhang ◽  
Gang Xie ◽  
Yan Qing Hou
Keyword(s):  
Lower Energy ◽  
Simulation Software ◽  
Feed Ratio ◽  
Reflux Ratio ◽  
Distillation Process ◽  
Simulation And Optimization ◽  
Optimum Parameters ◽  
New Process ◽  
Light Components ◽  
Theoretical Plates

The new two-tower process of thrichlorosilane distillation consisting of removal of light components after removing heavy components is analyzed by assistant of a chemical process simulation software. In order to achieve lower energy consumption, the parameters for each tower in the new process are optimized, such as the number of theoretical plates, the position of feed plate, reflux ratio and distillate (bottoms) to feed ratio. The results show that the optimum parameters for the first tower are the number of theoretical plates of 32, the position of feed plate of 24, reflux ratio of 2.5 and the distillate to feed ratio of 0.8516. For the second tower, the number of theoretical plates, the position of feed plate, the reflux ratio and the bottoms to feed ratio are 80, 16, 143 and 0.9652 respectively. Applying the optimized results in practical production, mass fraction of PCl3 in overhead of the first tower is reduced by two orders of magnitude, condenser duty and reboiler duty of the second tower are dropped by more than eight percent while obtaining higher purity trichlorosilane products.

Biaxial Extrusion of Polyimide Larc—tpi and Larc—tpi Blends

1989 ◽  
Vol 171 ◽  
Author(s):  
R. Ross Haghighat ◽  
Lucy Elandjian ◽  
Richard H. Lusignea
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Post Processing ◽  
Blend Films ◽  
Crystal Polymer ◽  
Extruded Films ◽  
Processing Step ◽  
New Process ◽  
Solution Cast ◽  
Two Phases ◽  
First Time

ABSTRACTBiaxial films of polyimide LARC—TPI and LARC—TPI/liquid crystal polymer Xydar® were extruded directly from the melt for the first time via an innovative new extrusion technique. Three types of films, neat LARC—TPI, LARC—TPI/lO wt percent and 30 wt percent blends were processed as a part of this NASA funded program. This new process offers an alternative technique to costly post—processing stretching of both solution cast and sheet extruded films. The post—processing step is often required to enhance certain properties. Processability was greatly enhanced by incorporating Xydar. The coefficient of thermal expansion was reduced from 34 ppm/ºC for the neat LARC—TPI to 15 ppm/º C for the 10 wt percent Xydar blend and ultimately down to I to 3 ppm/º C for the 30 wt percent blend films in the direction of extrusion. The maximum improvementin stiffness was realized by incorporating 10 wt percent Xydar (2.8 GPa up to 4.9 GPa). Tensile strength, however, experienced a drop as a result of Xydar addition, probably caused by inefficient mixing of the two phases.

Automatic Control on Batch and Continuous Distillation Columns

2018 ◽  
Vol 16 (9) ◽  
pp. 2418-2426
Author(s):  
Simon Diaz ◽  
Jose Ricardo Perez-Correa ◽  
Mario Alberto Fernandez-Fernandez
Keyword(s):  
Automatic Control ◽  
Distillation Columns ◽  
Continuous Distillation

DIFFERENT MORPHOLOGIES OFTiO2NANOSTRUCTURES IN ACIDIC AND BASIC SOL–GEL METHOD

NANO ◽  
2010 ◽  
Vol 05 (05) ◽  
pp. 279-285 ◽  
Author(s):  
M. H. IMANIEH ◽  
Y. VAHIDSHAD ◽  
P. NOURPOUR ◽  
S. SHAKESI ◽  
K. SHABANI
Keyword(s):  
Ph Value ◽  
Sol Gel ◽  
Simple Method ◽  
Gel Method ◽  
Sol Gel Method ◽  
New Process ◽  
Nanocrystalline Titanium ◽  
Acidic Conditions ◽  
Nanocrystalline Titanium Dioxide ◽  
First Time

In this research, nanocrystalline titanium dioxide (TiO2) particles were prepared by a modified alkoxide technique under basic and acidic conditions at room temperatures. A simple method for preparing different morphology of TiO2has been developed. The reaction condition was used to control the crystalline size, phase and morphology of the TiO2nanostructures. In this process by adjusting the Rw(water to precursor ratio) and pH value the hydrolysis and condensation reactions were controlled. This led to the development of a new process to produce TiO2nanorod (for the first time by sol–gel method) at high pH value (basic) while the water content was sufficient whereas at low pH value (acidic) nanosphere TiO2were obtained. The powders were characterized by DTA, XRD, FE-SEM and UV–vis techniques and their physical properties were compared.

Sintering of Powders From Fiberglass Recycling

2014 ◽  
Author(s):  
Fabrizio Quadrini
Keyword(s):  
Diffusion Mechanism ◽  
Flexural Modulus ◽  
Metal Powders ◽  
State Diffusion ◽  
New Process ◽  
Mechanical Performances ◽  
First Time ◽  
Very High ◽  
Typical Process

Sintering is a typical process for metal powders which can be effectively agglomerated by a solid state diffusion mechanism. Polymer powders are less sensible to this kind of mechanism because of the lower molecular mobility. Anyway, such applications have been mentioned about sintering of thermoplastic powders in the scientific literature. In this study, sintering has been used for the first time to agglomerate thermoset powders coming from recycling of fiberglass. This way, two interesting results have been obtained. First of all, new products have been produced by recycling fiberglass without any addition of virgin resin or linking agent. Moreover, it has been shown that sintering can lead to very high thickness products which are very difficult to obtain by typical molding processes because of shrinkage or frozen stresses. In order to show the feasibility of this new process, some powders have been collected from the waste of industrial partners. These powders have been molded without the addition of any other material so as to produce small plates or thick bricks. In such cases, a polyester coating was also added to improve the surface quality of the brick. Several samples have been extracted from these products and tested to evaluate the mechanical performances of the recycled plates. Results are very promising in terms of process easiness and part properties. A density about 1 g/cm3 has been obtained with a flexural modulus about 1 GPa and a flexural strength up to 20 MPa.

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