scholarly journals Separation of butane isomers using a novel ZIF-8 slurry with extremely high efficiency: from laboratory study to industrial pilot test

2021 ◽  
Author(s):  
Mingke Yang ◽  
Huishan Wang ◽  
Julian Y. Zuo ◽  
Yu Han ◽  
Liya Chai ◽  
...  
Keyword(s):  
Gas Separation ◽  
High Efficiency ◽  
Mixed Solvent ◽  
Raw Materials ◽  
Water Solution ◽  
Commercial Application ◽  
Pilot Test ◽  
Test Results ◽  
New Materials ◽  
Separation Device

Abstract Both n-butane and iso-butane are important petrochemical raw materials, and their separation is of great significance and full of challenge because of their close boiling characteristic. The ZIF-8 slurry formed with a novel mixed solvent M-water solution as sorption media was adopted to separate the mixture with high efficiency. The iso-/n-butane selectivity of ZIF-8/M-water slurries is as high as 890 with high kinetic performance, even transcending the upper limit of the new materials or membranes. More encouragingly, continuous pilot separation device was established and test results show that the purity and recovery ratio of iso-butane product achieved 99.46 mol% and 87% respectively, which are remarkably superior to the corresponding performance (98.56 mol% and 54%) of the industrial distillation tower. To our best knowledge, this is the first industrial pilot test using MOFs for gas separation, and also an important step forward to the commercial application of MOFs in gas separation.

Submerged Production System—A Final Report

1980 ◽  
Vol 102 (1) ◽  
pp. 30-34
Author(s):  
J. A. Burkhardt ◽  
T. W. Childers ◽  
R. E. Anderson ◽  
W. D. Loth ◽  
T. W. Michie
Keyword(s):  
Deep Water ◽  
Production System ◽  
Commercial Application ◽  
Final Report ◽  
Pilot Test ◽  
Test Results ◽  
Well Completion ◽  
Adequate Quality ◽  
Equipment Manufacture ◽  
Processing And Storage

The offshore pilot test of Exxon’s Submerged Production System (SPS) has reached a successful conclusion. This pilot test encompassed the entire spectrum of SPS equipment, spanning from the well completion intervals to, but not including, common surface processing and storage facilities. Since the SPS is designed to meet all the life cycle needs of a subsea field, one of the objectives of the pilot test was to evaluate both the techniques and the equipment used to install, operate, and maintain a prototype version of the SPS. The equipment under test was designed for use in water depths up to 2000 ft, but with minor modifications it is capable of operating in significantly greater depths. Evaluation of pilot test results has shown that the deep water installation techniques are practicable and that the deep water maintenance machinery is competent to repair any failures likely to occur in an operating system. One of the most significant problems in conducting the pilot test was achieving adequate quality control during equipment manufacture. The test results have demonstrated that, with relatively minor modifications, the SPS is suitable for commercial application.

scholarly journals A Brief Review on Solvent-Free Synthesis of Zeolites

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 788
Author(s):  
Jinlin Mei ◽  
Aijun Duan ◽  
Xilong Wang
Keyword(s):  
High Efficiency ◽  
Raw Materials ◽  
Solvent Free ◽  
High Yield ◽  
Control Synthesis ◽  
Mechanical Mixing ◽  
Synthesis Mechanism ◽  
Wastewater Pollution ◽  
Low Efficiency ◽  
Solvent Free Synthesis

The traditional hydrothermal method to prepare zeolite will inevitably use a large amount of water as a solvent, which will lead to higher autogenous pressure, low efficiency, and wastewater pollution. The solvent-free method can be used to synthesize various types of zeolites by mechanical mixing, grinding, and heating of solid raw materials, which exhibits the apparent advantages of high yield, low pollution, and high efficiency. This review mainly introduces the development process of solvent-free synthesis, preparation of hierarchical zeolite, morphology control, synthesis mechanism and applications of solvent-free methods. It can be believed that solvent-free methods will become a research focus and have enormous industrial application potential.

scholarly journals Effect of Fly Ash on Compressive Strength, Drying Shrinkage, and Carbonation Depth of Mortar with Ferronickel-Slag Powder

2021 ◽  
Vol 11 (3) ◽  
pp. 1037
Author(s):  
Se-Jin Choi ◽  
Ji-Hwan Kim ◽  
Sung-Ho Bae ◽  
Tae-Gue Oh
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Construction Industry ◽  
Bituminous Coal ◽  
Raw Materials ◽  
Drying Shrinkage ◽  
The Other ◽  
Test Results ◽  
Slag Powder ◽  
Ferronickel Slag

In recent years, efforts to reduce greenhouse gas emissions have continued worldwide. In the construction industry, a large amount of CO2 is generated during the production of Portland cement, and various studies are being conducted to reduce the amount of cement and enable the use of cement substitutes. Ferronickel slag is a by-product generated by melting materials such as nickel ore and bituminous coal, which are used as raw materials to produce ferronickel at high temperatures. In this study, we investigated the fluidity, microhydration heat, compressive strength, drying shrinkage, and carbonation characteristics of a ternary cement mortar including ferronickel-slag powder and fly ash. According to the test results, the microhydration heat of the FA20FN00 sample was slightly higher than that of the FA00FN20 sample. The 28-day compressive strength of the FA20FN00 mix was approximately 39.6 MPa, which was higher than that of the other samples, whereas the compressive strength of the FA05FN15 mix including 15% of ferronickel-slag powder was approximately 11.6% lower than that of the FA20FN00 mix. The drying shrinkage of the FA20FN00 sample without ferronickel-slag powder was the highest after 56 days, whereas the FA00FN20 sample without fly ash showed the lowest shrinkage compared to the other mixes.

VERTAD™, AUTO-THERMOPHILIC AEROBIC DIGESTION: PILOT TEST RESULTS

2001 ◽  
Vol 2001 (1) ◽  
pp. 1307-1322
Author(s):  
Mike Boyle ◽  
Larry Sasser ◽  
Jeff Guild ◽  
Dave Pollack
Keyword(s):  
Pilot Test ◽  
Test Results ◽  
Aerobic Digestion ◽  
Thermophilic Aerobic Digestion

Investigation on Shear Behaviour of Flax-Kenaf Hybrid Composite

2014 ◽  
Vol 1051 ◽  
pp. 139-142 ◽  
Author(s):  
V.S. Srinivasan ◽  
S. Rajendra Boopathy ◽  
B. Vijaya Ramnath
Keyword(s):  
Hybrid Composite ◽  
Raw Materials ◽  
Technological Development ◽  
Fiber Composites ◽  
Shear Behaviour ◽  
Biodegradable Material ◽  
New Materials ◽  
Double Shear ◽  
Environmental Friendly ◽  
Shear Property

The present technological development makes us to find and fabricate new materials to replace existing materials. Also, the need for environmental friendly, easily biodegradable material plays prime role in determining the raw materials. In this paper Flax and Kenaf fibres are used as the suspending matrix to form hybrid composite with epoxy resin. Hand layup technique is carried out in this work to fabricate composite laminate. The double shear property is evaluated. The result shows that the hybrid composite shows better property than mono fiber composites.

scholarly journals The use of the method of controlling the electrochemical parameters of aqueous solutions to combat complications in the operation of oil field pipelines

2021 ◽  
Vol 225 ◽  
pp. 01008
Author(s):  
Oleg Latypov ◽  
Sergey Cherepashkin ◽  
Dina Latypova
Keyword(s):  
Aqueous Solutions ◽  
Oil And Gas ◽  
High Efficiency ◽  
Oil Field ◽  
Oil Fields ◽  
Control Methods ◽  
Test Results ◽  
Chemical Reagents ◽  
Electrochemical Parameters ◽  
Very High

Corrosion of equipment in the oil and gas complex is a global problem, as it contributes to huge material costs and global disasters that violate the environment. Corrosion control methods used to protect equipment do not always ensure the absolute safety of the operation of oil and gas facilities. Moreover, they are quite expensive. The developed method for controlling the electrochemical parameters of aqueous solutions to combat complications during the operation of oil-field pipelines provides the necessary protection against corrosion. The method is economical and environmentally friendly, since it does not require the use of chemical reagents. The test results have shown a very high efficiency in dealing with complications in oil fields.

scholarly journals Load characteristics of three-plunger pumps for spray seawater fire-fighting

2020 ◽  
pp. 142-146
Author(s):  
В.А. Наумов ◽  
Н.Л. Великанов ◽  
А.В. Тришина
Keyword(s):  
Satisfactory Agreement ◽  
Test Data ◽  
High Efficiency ◽  
Measurement Data ◽  
Fire Fighting ◽  
Test Results ◽  
Hydraulic Characteristics ◽  
Fire Extinguishing ◽  
Load Characteristics ◽  
Low Pressures

Цель статьи – получить эмпирические зависимости для характеристик трехплунжерных противопожарных насосов (ТПН), необходимые для автоматизации расчетов систем тушения пожаров на судах с применением распыленной морской воды. Задачи исследования: проверка непротиворечивости данных испытаний; определение расчетных зависимостей производительности ТПН, к.п.д., затраченной мощности от давления. Проведенный анализ результатов испытаний ТПН подтвердил возможность использования предложенных зависимостей в инженерных расчетах. Данные измерений удовлетворительно согласуются с результатами расчетов, за исключением к.п.д. Отклонение экспериментальных точек от эмпирических зависимостей, скорее всего, связано с занижением значений затраченной мощности на испытаниях при небольших давлениях. Предложено для оценки к.п.д. использовать ранее полученную типовую зависимость. Построены графики для характеристик насоса NP25/41-170S. Пример расчета рабочей точки насосной установки с использованием приближенной гидравлической характеристики водяной пожарной системы судна показал высокую эффективность предложенных методик. The purpose of the article is to obtain empirical dependences for the characteristics of three-plunger fire-fighting pumps (TFP), which are necessary for automating calculations of fire extinguishing systems on ships using sprayed seawater. Research objectives: checking the consistency of test data; determining the calculated dependences of the TFP performance, efficiency, power expended on pressure. The analysis of the TFP test results confirmed the possibility of using the proposed dependencies in engineering calculations. The measurement data are in satisfactory agreement with the results of calculations, with the exception of efficiency. The deviation of experimental points from the empirical dependences is most likely due to an underestimation of the power consumed during tests at low pressures. It is proposed to use the previously obtained typical dependence to estimate the efficiency. Graphs are plotted for the characteristics of the NP25/41-170S pump. An example of calculating the working point of a pumping unit using the approximate hydraulic characteristics of the ship's water fire system showed the high efficiency of the proposed methods.

scholarly journals STUDY ON THE IN VITRO MORPHOGENETIC RESPONSE FROM SHOOT AND CALLUS CULTURES OF Blepharis maderaspatensis (L.) Heyne ex. Roth

2020 ◽  
Vol 1 (40) ◽  
pp. 28-38
Author(s):  
Trang Phuong Nguyen Thi ◽  
Quang Minh Bui ◽  
Hai Duc Le ◽  
Linh Quoc Nguyen
Keyword(s):  
High Efficiency ◽  
Raw Materials ◽  
Callus Cultures ◽  
Culture Conditions ◽  
Ms Medium ◽  
Axillary Shoots ◽  
Scientific Database ◽  
Medicinal Value ◽  
Shoot Growth Rate

Blepharis maderaspatensis (L.) Heyne ex. Roth is a short-term plant which contains many important secondarycompounds with high medicinal value. Currently, most of the researches focus on chemical composition and pharmacological activity, but the source of raw materials is very limited. In this study, the first step is transferring the samples from nature into in vitro culture conditions to understand the effects of the factors related to shooting and callus morphogenesis was performed, the first node from shoots apical meristem was isolated and sterilized with 1.5% NaOCl for 20 minutes to achieve high efficiency with 86.11% sterile samples and 85.56% shoot growth rate after 2 weeks of culture on MS medium. The shoot generation from axillary shoots was continued to be investigated with the highest number of shoots formed on MS medium supplemented with BA (1 mg / l) showed 1.53 shoots/implant which the height and the number of leavesare 3.65cm and 6.67, respectively. Besides, the formation of callus from leaves of MS medium supplemented with 2.4 - D (0.25 mg / l) achieved the rate of 66.67% of cultured samples, forming good callus after 4 weeks of culture. The results of the study not only contribute importantly to understanding morphogenesis for micropropagation purposes but also serve as the scientific database for further studies at the cellular and molecular levels of this plant.

scholarly journals Substrates for slow pyrolysis

2018 ◽  
Vol 168 ◽  
pp. 08004
Author(s):  
Václav Peer ◽  
Jaroslav Frantík ◽  
Jan Kielar ◽  
Drahomír Mašek
Keyword(s):  
Sewage Sludge ◽  
Chemical Industry ◽  
Raw Materials ◽  
Ash Content ◽  
Wood Chips ◽  
Simple Construction ◽  
New Materials ◽  
Solid Materials ◽  
Slow Pyrolysis ◽  
Pyrolysis Of Biomass

Slow pyrolysis of solid materials can produce new materials usable for energy or chemical industry. The advantage of pyrolysis devices is the simple construction and process control and the ability to utilize materials with different properties (composition, ash content). Produced gaseous, liquid and solid materials could be used as a sources of energy, raw materials in chemical industry or substances for improving of soil properties. At article are described products of slow pyrolysis of biomass (wood chips), agrifuels (hay, wheat straw) and sewage sludge.

scholarly journals Nori Preference Level based on the Condition of the Raw Material Eucheuma cottonii Seaweed

2019 ◽  
pp. 1-10 ◽  
Author(s):  
Dinda Widu Ramasari ◽  
Evi Liviawaty ◽  
Atikah Nurhayati ◽  
Rusky Intan Pratama ◽  
Eddy Afrianto
Keyword(s):  
Water Content ◽  
Raw Materials ◽  
Kappaphycus Alvarezii ◽  
Raw Material ◽  
Crude Fiber ◽  
Test Results ◽  
Crude Fiber Content ◽  
Physical Tests ◽  
Bayes Test ◽  
Eucheuma Cottonii

Aims: To determine the level of preference of panelists for Nori based on the condition of raw materials of dry and semi-dried Kappaphycus alvarezii (formerly Eucheuma cottonii) seaweed. Study Design: The research was conducted experimentally. Place and Duration of Study: Organoleptic tests were carried out in the Laboratory of Fisheries Product Processing Faculty of Fisheries and Marine Sciences, University of Padjadjaran. Physical tests and chemical tests conducted at the Laboratory of Research and Biological Resources and Biotechnology Research Institute at the Society (LPPM), IPB, between March 2019 and April 2019. Methodology: The research was conducted experimentally consisted of 3 treatments with 20 semi-trained panelists as replication from Fisheries students of Fisheries and Marine Science Faculty, University of Padjadjaran who had experienced the organoleptic assessment. Hedonic tests were to determine the level of panelists preference for the products which included appearance, aroma, texture, and flavor, the results were statistically analyzed using Friedman Test and Bayes Test. Physical tests (thickness and hardness) and chemical tests (water content and crude fiber content) were carried out on the most preferred treatment product and analyzed descriptively. Results: The organoleptic test results of Nori from Kappaphycus alvarezii (formerly Eucheuma cottonii) seaweed with dry raw material conditions had the highest average value on each characteristic compared to other treatments, appearance of 7.70, aroma of 7.00, texture of 7.50, and flavor of 7.90. The Bayes test results on the treatment of Nori from Kappaphycus alvarezii (formerly Eucheuma cottonii) seaweed with dry raw materials conditions having the highest alternative which was 8.54 with the most influential taste criteria for the assessment. The thickness of the Nori was 0.108 mm, the hardness was 1916.16 gf, water content of Nori was 17.23% and crude fiber content was 10.10%. Conclusion: The treatment of Nori with raw materials of dry conditions was the most preferred by panelists.

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