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Chapter 1 to 16 Semantic Scholar

2017-12-4  Rotary dryers can be operated at very high temperatures to accomplish various reactions in addition to or instead of simple drying; these units are referred to as kilns. It is necessary to line the shell of rotary kilns with suitable refractory materials. In order to enhance the drying rates in the rotary dryer without raising the gas

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Kraft lignin depolymerisation in sub- and supercritical

Author: Nerea Abad-Fernández, Eduardo Pérez, Ángel Martín, María J. Cocero

Production of lignin based insoluble polymers (anionic

2017-12-13  Lignin-based polymers (hydrogel precursors) partially soluble in both aqueous and organic solvents were produced employing a relatively fast (6 days) enzymation of Kraft lignin with basidiomycetes

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Effect of spray dryer processing parameters on the

2019-4-12  The effect of spray dryer processing parameters on the product yield and insecticidal activity of baculovirus was evaluated. Spray-dried samples of a granulovirus (GV) from Pieris rapae (L.) and a multiple nucleopolyhedrovirus (MNPV) from Anagrapha falcifera (Kirby) were prepared using two dryer-atomiser configurations (rotary atomiser and two-fluid spray atomiser), four drying temperatures

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Preparation of cationic soft kraft lignin and its

2015-6-1  The cationization of kraft lignin using GTMAC in our experiment was carried out under alkaline conditions, which made kraft lignin soluble in the solution leading to a homogenous reaction. The optimized conditions were 70 °C, 1 h reaction time, 1.0 wt.% lignin concentration, and 2/1 of GTMAC/lignin molar ratio that was generated cationic

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Experiences of Kraft Lignin Functionalization by Enzymatic

(2014). “Lignin oxidation reactions,” BioResources 9(4), 7336-7351. 7336 Experiences of Kraft Lignin Functionalization by Enzymatic and Chemical Oxidation Anna Kalliola,* Martta Asikainen, Riku Talja, and Tarja Tamminen Linear hydrophilic derivatives are expected to soften lignin and improve its utilization in composite applications.

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Learn About Paper Drying GasPaperDryer

Yankee Dryer. The Yankee Dryer uses a very large steam cylinder (18 25 ft diameter) surrounded by an air cap (hood). The hood supplies hot, high velocity air that impinges on the sheet. This way, drying is accomplished by a combination of conduction (the steam drum) and convection (moving air).

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PAPER TECHNOLOGY Nordic PulpPaper Research

2018-1-16  by changing conditions away from the conventional ones in at pressing and drying in making. At press temperatures below the softening temperature of lignin an enhanced pressure seems to have the greatest impact on sheet strength, but the effect of press temperature is also significant (Chagaev et al. 1999, Nygren et al. 2003).

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Batch Drying With Vacuum Contact Dryers Chemical

Drying is a demanding unit operation where solvents need to be removed without altering product chemistry. Vacuum dryers are essential pieces of equipment for accomplishing this task. Drying solids is a demanding task that requires both knowledge of process technology and a sound mechanical design of the equipment used.

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Rotary Dryers FEECO International Inc.

Rotary dryers work by tumbling material in a rotating drum in the presence of a drying air. They can also be indirectly heated to avoid direct contact between the material and processing medium. The drum is positioned at a slight horizontal slope to allow gravity to assist in moving material through the drum.

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ChemEngineering March 2020 Browse Articles

This stone focuses on indirect biomass drying. It compares the operating characteristics of a laboratory-scale drum dryer and a pilot-scale rotary dryer. Before the design of an industrial dryer for a specific material, it is important to experimentally prove the process and to determine the drying

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Waste and Biomass Valorization, 化学 • 材料, X-MOL

For the experimental purpose, a portable rotary dryer was designed and developed to determine the drying conditions of market waste. A U-type electric air heater of 1000 W were installed in the heating unit along with solar parabolic dish collector.

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EP0219643A1 Kraft liner board and method of

The kraft process is a method of preparation of an aqueous slurry of fibers by treatment of a suitable renewable raw material. In most pulping process, a considerable portion of the natural lignin in , grass or other vegetative matter is rendered soluble by chemical reaction with one or

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METHOD FOR SEPARATING AND RECOVERING

2019-2-28  What is claimed is: 1. A method of recovering lignin from biomass comprising the steps of: mixing biomass with a lignin solvent to form a mixture of biomass and solvent, heating the mixture of biomass and solvent to allow at least a portion of lignin from the biomass to become soluble in the solvent, separating a portion of solids from the lignin solvent, separating an organic layer from the

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Steam-assisted stone impregnation

Steam-assisted stone impregnation US6537615; The present invention relates to a process of using steam to achieve simultaneous impregnation and drying of lignocellulosic material to improve the strength of lignocellulosic material and to reduce the number of serial processing steps. The steam may be either indigenously generated by way of a heated press or heated nip, or the steam may be

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Combustion of lignin-oil-water mixtures in a rotary

Lignin recovery from black liquor has been proposed to de-bottleneck recovery boiler limited Kraft mills. The precipitated lignin would be used as a fuel in the lime kiln, replacing the external fuel, such as natural gas or fuel oil, presently used. In this work lignin-oil-water mixtures were investigated as a fuel. The rheology of the lignin-oil-water mixtures was studied; and a pilot scale

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ANDRITZ PULPPAPER

ANDRITZ has designed a broad range of high-consistency (HC) refiners to meet the demands of pulp, , panelboard, and recycle producers. At the top of the line in terms of throughput and motor power is the TX68 twin refiner.

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Pretreatment of Lignocellulosic Biomass with Low-cost

Another advantage is the relatively mild conditions under which the process can be carried out. Advantages over other lignin-solvating processes (i.e., Kraft pulping or Organosolv pretreatment) are the simple separations and solvent recovery due to the non-volatility of the IL, lowering the capital investment. The isolated lignin is odor-free.

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FACILITY PROFILE AV Group NB Inc. Nackawic Mill

2018-8-31  these elevated conditions of temperature and pressure, and in the presence of the cooking liquor, the lignin binding component is dissolved, releasing the individual cellulose fibers. After cooking, the digester charge of unbleached Kraft pulp, or brownstock, is blown into one of two blow tanks.

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Valmet: technologies, services and automation to pulp

Valmet is the leading global developer and supplier of technologies, automation and services for the pulp, stone and energy industries.

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Combustion of lignin-oil-water mixtures in a rotary

Lignin recovery from black liquor has been proposed to de-bottleneck recovery boiler limited Kraft mills. The precipitated lignin would be used as a fuel in the lime kiln, replacing the external fuel, such as natural gas or fuel oil, presently used. In this work lignin-oil-water mixtures were investigated as a fuel. The rheology of the lignin-oil-water mixtures was studied; and a pilot scale

get price

Pretreatment of Lignocellulosic Biomass with Low-cost

Another advantage is the relatively mild conditions under which the process can be carried out. Advantages over other lignin-solvating processes (i.e., Kraft pulping or Organosolv pretreatment) are the simple separations and solvent recovery due to the non-volatility of the IL, lowering the capital investment. The isolated lignin is odor-free.

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Delignification of L. leucocephala and C. equisetifolia

2020-7-23  Kraft pulping of L. leucocephala and C. equisetifolia was performed in an electrically heated rotary digester (0.02 m 3 capacity; L&W, Kista, Sweden) containing four bombs each of 1-L volume. The chips and the white liquor were introduced into the bombs; the bombs were sealed and placed into the digester for cooking at different conditions

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lime kiln process Invest

Rotary Kiln Alignment. The continuity of operation of a lime sludge kiln requires strict maintenance control. The rotary kiln is among the largest type of moving machines made and is subjected to extreme temperatures, power failures, atmospheric conditions, varying loads, and other operating conditions which affect its wear and alignment.

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Accelerated chamois leather tanning process using

requirements for the chamois leather. The best conditions for the tanning were oxidation times of 4 hours inside the rotary drum and 2 days outside the rotary drum. Therefore, the use of oxidizing agent could shorten the oxidation process in the chamois leather production.

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FACILITY PROFILE AV Group NB Inc. Nackawic Mill

2018-8-31  these elevated conditions of temperature and pressure, and in the presence of the cooking liquor, the lignin binding component is dissolved, releasing the individual cellulose fibers. After cooking, the digester charge of unbleached Kraft pulp, or brownstock, is blown into one of two blow tanks.

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Glossary of Papermaking Terms PITA

2016-8-8  AIR DRYING A method of drying the stone web on the stone machine by blowing air along the direction of the web. ALUM Papermaking chemical commonly used for precipitating rosin size onto pulp fibres to impart water-resistant properties (when used for water treatment) to the . Also, used for pitch control. More correctly called aluminium

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CPB 201 Final Flashcards Quizlet

1. overthick chips result in non-uniform penetration of cooking chemicals and more screen rejects 2. fines and pin chips cause a high level of resistance to liquor flow and blockage of liquor collection screens in both batch and continuous digesters 3. the ability of chips to flow in bins and feeders depends on their shape and size 4. chip bulk density affects digester production 5. over and

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造纸工业专业英语词汇_百度文库

2018-6-24  造纸工业专业英语词汇_能源/化工_工程科技_专业资料。第 1 页,共 55 页 A A flute A级瓦楞纸波形数 (每30厘米36± 3个) A printing

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Valmet: technologies, services and automation to pulp

Valmet is the leading global developer and supplier of technologies, automation and services for the pulp, stone and energy industries.

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