scholarly journals Issue of technological equipment corrosion at chemical wood processing enterprises (review)

2021 ◽  
Vol 25 (3) ◽  
pp. 142-151
Author(s):  
G.L. Oliferenko ◽  
◽  
A.N. Ivankin ◽  
A.V. Ustyugov ◽  
A.N. Zarubina ◽  
...  
Keyword(s):  
Acid Corrosion ◽  
External Source ◽  
Metal Corrosion ◽  
Chemical Processing ◽  
Technological Equipment ◽  
Corrosion Resistant ◽  
Wood Processing ◽  
Anodic Protection ◽  
Equipment Corrosion ◽  
Industrial Use

The review is devoted to the problem of corrosion in the chemical processing of wood. Corrosion processes of technological equipment at enterprises of the pulp and paper, hydrolysis and wood chemical industries are considered. The influence of the main chemical substances involved in the technological process or formed during the chemical processing of wood is discussed. The importance of using alloyed, corrosion-resistant steels of grades 10Kh17N13M2T, 10Kh17N13M3T, 08Kh17N15M3T in the processes of chemical transformation is shown. The information on methods of protection of structural materials from corrosion at enterprises in recent years is presented. The prospects of industrial use of the method of anodic protection, which consists in creating a passivating film on the surface of the protected structure by anodic polarization from an external source of direct current, is noted. The importance of using inhibitors in the composition of technological media is discussed, as one of the most effective ways to combat metal corrosion in aggressive media. It is noted that in addition to the well-known inhibitors of acid corrosion KI-1, PB-5, PKU-3, KhOSP-10, urotropin, KPI-3, I-1-V, BA-6, the use of green chemistry advances is promising, in particular, the use of as anticorrosive agents for waste processing of both wood itself and corrosion inhibitors based on plant extracts.

Structure and properties of powders obtained by electrodispersion of corrosion-resistant metal waste in kerosine

2021 ◽  
pp. 276-281
Author(s):  
E.V. Ageeva ◽  
E.V. Ageev ◽  
A.A. Sysoev
Keyword(s):  
High Efficiency ◽  
Experimental Studies ◽  
Low Energy ◽  
Powder Materials ◽  
Energy Costs ◽  
Structure And Properties ◽  
Corrosion Resistant ◽  
High Chromium ◽  
Metal Waste ◽  
Industrial Use

The results of experimental studies of the structure and properties of electroerosive high-chromium powders obtained in kerosene are presented. The high efficiency of using the electrodispersing technology is shown, which provides for obtaining new corrosion-resistant powder materials suitable for industrial use at low energy costs.

Anodic Passivation of Steel In 100 Percent Sulfuric Acid

CORROSION ◽  
1963 ◽  
Vol 19 (2) ◽  
pp. 37t-44t ◽  
Author(s):  
A. O. FISHER ◽  
J. F. BRADY
Keyword(s):  
Sulfuric Acid ◽  
Corrosion Rate ◽  
Laboratory Testing ◽  
Storage Tank ◽  
Substantial Decrease ◽  
Corrosion Resistant ◽  
Equipment Replacement ◽  
Iron Contamination ◽  
Anodic Protection ◽  
Plant Test

Abstract The feasibility of anodic protection for decreasing iron contamination of 100 percent sulfuric acid in an 18,000-gallon steel storage tank was investigated. Since adequate coatings for steel in this service are not available, this approach was taken as an alternative to costly equipment replacement with corrosion resistant alloys. Preliminary laboratory testing indicated that the corrosion rate of steel in 100 percent sulfuric acid could be reduced from 27 mpy to 1 mpy by anodically passivating. As this represented a substantial decrease in terms of iron contamination of the acid, a plant test was run using anodic protection on the storage tank. Passivation of the tank resulted in lowering the iron pickup from 114 ppm down to 9 ppm with trouble-free operation of equipment over a seven-month period. It was concluded that anodic protection offered significant economic advantages compared to the use of more resistant materials of construction.

scholarly journals REGULARITIES OF CREATION OF LAYERED METAL CORROSION-RESISTANT MATERIALS WITH INTERNAL PROTECTOR

2020 ◽  
pp. 24-30
Author(s):  
I. S. Los’ ◽  
A. E. Rozen ◽  
A. V. Dub ◽  
A. E. Korneev ◽  
S. Yu. Kireev ◽  
...  
Keyword(s):  
Systematic Approach ◽  
Layered Materials ◽  
Explosion Welding ◽  
Metal Corrosion ◽  
Corrosion Resistant ◽  
Protective Layers ◽  
System A ◽  
Bimetallic Materials ◽  
First Time ◽  
Internal Protector

In this article regularities of the creation of laminated metal corrosion-resistant materials with an internal protector obtained by explosion welding are considered. For the first time, a laminated material is considered as a technical system. A systematic approach was used to construct the configuration of layered materials. The functions of individual elements are identified, the nature of the connections is established, and the complexity of the system is assessed. Corrosion tests were carried out, indicators of corrosion resistance were calculated by varying the number of protected and protective layers in comparison with monometallic material. An assessment of the economic efficiency of using laminated metal corrosion-resistant materials with an internal protector is carried out in comparison with monometallic and bimetallic materials.

Wood Waste Characterization and Reuse Possibilities

2021 ◽  
pp. 369-385
Author(s):  
Eraldo Antonio Bonfatti Júnior ◽  
Thiago Campos Monteiro ◽  
Elaine Cristina Lengowski
Keyword(s):  
Black Liquor ◽  
Pulp And Paper ◽  
Wood Chips ◽  
Natural Material ◽  
Chemical Processing ◽  
Mechanical Processing ◽  
Waste Wood ◽  
Waste Characterization ◽  
Wood Processing ◽  
Wood Flooring

Wood is the most versatile natural material. It can be used to obtain sawn wood, wood for civil construction, naval purpose, packaging, furniture, wood flooring, composites, bioenergy, pulp and paper. More recently, nanotechnology and the biorefinery processes create new possibilities for wood use; however, wood processing still generates a large amount of waste. Wood can be processed mechanically or chemically. The mechanical processing of wood has residues like sawdust, cuttings, and wood chips. From the chemical processing of wood, the main residue is black liquor.

MOLECULAR DYNAMICS SIMULATIONS OF FURAN RESIN (POLYFURFURYL ALCOHOL): PREDICTING MECHANICAL PROPERTIES

2021 ◽  
Author(s):  
JOSH KEMPPAINEN ◽  
IVAN GALLEGOS ◽  
PRATHAMESH DESHPANDE ◽  
JACOB GISSINGER ◽  
GREGORY ODEGARD
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Acid Corrosion ◽  
Carbon Composites ◽  
Corrosion Resistant ◽  
Polyfurfuryl Alcohol ◽  
Furan Resin ◽  
Dynamics Simulations ◽  
Good Agreement

Furan resins can be used as precursor resin for Carbon-Carbon Composites but has also been used in adhesives, acid/corrosion resistant materials, and as an alternative fuel precursor [15]. This paper contains the most current understanding of the structure of furan resin and a Molecular Dynamics workflow for computationally simulating its polymerization with the 'fix bond/react' command implemented in LAMMPS. The predicted mechanical properties of the polymerized resin are in good agreement with the literature values.

scholarly journals Technical applications of focused antenna arrays

2019 ◽  
Vol 30 ◽  
pp. 05005
Author(s):  
Denis Vedenkin
Keyword(s):  
Material Processing ◽  
Antenna Arrays ◽  
Microwave Processing ◽  
Technological Equipment ◽  
Wood Processing ◽  
Increase Efficiency

We analysed possibility of using focused antenna arrays at some technical applications. For example, conveyor method of material processing, wood processing for disinfection. Using principles of focusing antenna arrays can increase efficiency of modern microwave technological equipment against classical microwave processing devices.

Titanium Containing High Strength Sulfuric Acid Corrosion Resistant Steel

2012 ◽  
Vol 83 (5) ◽  
pp. 465-471
Author(s):  
Hairong Guo ◽  
Tingting Li ◽  
Hualong Li ◽  
Emi Toshihiko
Keyword(s):  
Sulfuric Acid ◽  
Acid Corrosion ◽  
High Strength ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Corrosion Resistant ◽  
Sulfuric Acid Corrosion

Synthesis of molten-metal corrosion resistant yttria-based refractory by hot-pressing and densification

2015 ◽  
Vol 35 (9) ◽  
pp. 2651-2662 ◽  
Author(s):  
Son Thanh Nguyen ◽  
Tadachika Nakayama ◽  
Hisayuki Suematsu ◽  
Tsuneo Suzuki ◽  
Makoto Nanko ◽  
...  
Keyword(s):  
Molten Metal ◽  
Hot Pressing ◽  
Metal Corrosion ◽  
Corrosion Resistant

Corrosion Resistant, Lightweight, and Inexpensive Metallic Bipolar Plates With Excellent Manufacturability for PEM Fuel Cell Power Systems

2004 ◽  
Author(s):  
Yue Hung ◽  
K. M. El-Khatib ◽  
Hazem Tawfik
Keyword(s):  
Fuel Cell ◽  
Room Temperature ◽  
Experimental Testing ◽  
Single Cells ◽  
Pem Fuel Cell ◽  
The Other ◽  
Metal Corrosion ◽  
Bipolar Plates ◽  
Active Electrode ◽  
Corrosion Resistant

Corrosion resistant metal treated bipolar plates with higher rigidity and electrical conductivity than graphite were developed and tested for PEM fuel cell applications. Six replicas of single cells, three of which were made of graphite composites bipolar plates and the other three were made of the treated metallic plates. An Electrode Membrane Assembly (MEA) with 5.55 cm2 active electrode areas, double-sided electrodes, 0.3 mg/cm2 Pt loading and Nafion membrane 115 was fitted to each cell and operated under identical conditions. The experimental testing was conducted at room temperature 20°C. The obtained data from the three graphite cells were averaged and plotted and the other metallic cells’ data were similarly treated and plotted on the same graph for comparison. Generally, the metallic treated bipolar plate provided at least 12% saving in hydrogen consumption in comparison to graphite. This is attributed to the lower bulk and surface contact resistance of the metal used in this study in relation to graphite. The results of the lifetime testing, conducted at room temperature under variable loading showed no indication of power degradation due to metal corrosion for at least 1500 hours.

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