scholarly journals Evaluation of Noble Environmentally Friendly and High Efficient Fire-Extinguishing Means

2020 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Forest Fires ◽  
Large Scale ◽  
Raw Materials ◽  
Environmentally Friendly ◽  
Low Permeability ◽  
Mineral Salts ◽  
Serial Production ◽  
Fire Extinguishing ◽  
High Efficient ◽  
History Of

Reviewing the history of the development of preventing measures, to ensure suppression of fire clearly reveals, that the most urgent of these measures is the use of environmentally friendly, highly efficiency fire extinguishing means. The best fire-extinguishing means are fire-extinguishing powders, which are characterized by high effectiveness and universality. Fire- extinguishing powders of serial production represents the fine dispersed mineral salts with different additives, which decrease tendency of consolidation and caking of powder. In serial production powders halogen containing, organic hydrophobizators are mainly used as such additives. Thus, most of them are halogen containing and do not satisfy the contemporary demands, in the first place with the view of effective, non-toxic and universal use. It also should be mentioned, that fire- extinguishing powders are characterized with less heat capacity, low permeability and wetting effect compared to water and foams, that’s why at extinguishing large scale fires, particularly - forest fires, use of just fire- extinguishing powders is less effective. This article discusses the elaboration of non-halogen, environmentally friendly, high-efficient, universal fireextinguishing powders on the basis of local mineral raw materials of silicate origin and production of highly effective foam-suspensions based on such powders, the use of which will have higher extinguishing ability than water, foams or powders taken separately. The received fire-extinguishing powders will be used at extinguishing of all classes of fires, as well as, in complex with water and foams for extinguishing of large scale fires – forest fires.

scholarly journals Production and Performance Evaluation of Noble Fire Extinguishing Foam Suspensions Using Locally Available and Environmentally Friendly Natural Mineral Raw Materials

2020 ◽  
Vol 21 (1) ◽  
pp. 58-64
Author(s):  
Lali Gurchumelia ◽  
Murman Tsarakhov ◽  
Salome Tkemaladze ◽  
Feliks Bejanov ◽  
Lasha Tkemaladze
Keyword(s):  
Large Scale ◽  
Chemical Engineering ◽  
Raw Materials ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Mechanical Mixing ◽  
Mineral Raw Materials ◽  
Engineering Research ◽  
Fire Extinguishing ◽  
Halogen Free

The main goal of this research is the fabrication of halogen free, environmentally friendly fire-extinguishing powders using local mineral raw materials and the development of technological processes for producing highly efficient fire-extinguishing foam-suspensions on the basis of the produced powders. Fire-extinguishing powders are made by mechanical treatment and mixing of raw materials: zeolite, clay shale, perlite and ammophos. The process does not need introduction of expensive, halogen-containing, hydrophobizators and ensures the cost-effective production of fire-extinguishing powders. The obtained fire-extinguishing powders are characterized by high performance properties, high fire-extinguishing capacity and coefficient of atomic oxygen recombination. Thus, they are characterized both by homogeneous and heterogeneous inhibition of combustion processes. The efficiency of the produced powders is not inferior to that of standard powders of common production. In addition, in contrast to their traditional analogs they are halogen free, environmentally friendly and cheaper (1.2-2 times cheaper). The obtained powders, unlike the ones of conventional production, have good compatibility with water and foam. Our foam-suspensions are prepared just by mechanical mixing of fire-extinguishing powders with water and surface-active substances – foamers. The process does not require chemical treatment of materials. Thus, the developed technology is simple and cost-effective. The foam-suspensions produced on the basis of the obtained powders have higher heat capacity, permeability, wetting effect like water and foam and unlike them, they allow for homogeneous as well as heterogeneous inhibition of the burning process. Thus, the so produced foam-suspensions will have higher extinguishing effect than water, foams or powders, taken separately. Based on the above, it can be suggested that the produced powders can be used for extinguishing all types of fires, including large-scale ones in a combination with water and foams. Chemical Engineering Research Bulletin 21(2019) 58-64

Research and Application of Geopolymer Cementitious Material Progress and Review

2013 ◽  
Vol 405-408 ◽  
pp. 2903-2911
Author(s):  
Zhong Wen Ou ◽  
Shang Yong Zhou ◽  
Chun Xia Xu ◽  
Yi Zhang ◽  
Jin Chao Yang ◽  
...  
Keyword(s):  
Large Scale ◽  
Raw Materials ◽  
Cementitious Materials ◽  
Research Field ◽  
Cementitious Material ◽  
Materials Development ◽  
History Of ◽  
Material Progress ◽  
Agent Development ◽  
Selection Of

Study on the geopolymers has been a history of nearly 40 years, because of its huge comparative advantage and attractive prospect, has become a hot research field of international materials.In this paper, based on the history and the present status of geopolymers cementitious materials development, summarized geopolymer cementitious material in the selection of raw materials, the activation agent development,preparation process research, cementitious material properties, mechanical properties, durability and engineering applications. progress made and trends.On this basis, expounded the problem of large-scale widely used the geopolymers need to continue to address, and pointed out the direction for its further research and application.

scholarly journals Production of environmentally friendly aerated concrete with required construction and operational properties

2018 ◽  
Vol 143 ◽  
pp. 02010 ◽  
Author(s):  
Evgeniya Tkach ◽  
Vladimir Solovyov ◽  
Semen Tkach
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Building Materials ◽  
Raw Materials ◽  
Environmentally Friendly ◽  
Industrial Wastes ◽  
Hazard Class ◽  
Concrete Production ◽  
Aerated Concrete ◽  
The Impact

The purpose of these studies is to justify the feasibility of recycling different types of industrial waste instead of conventional expensive raw materials in production of environmentally friendly aerated concrete with required construction and operational properties. The impact of wastes from various industries on the environmental condition of affected areas, as well as the results of their environmental assessment were analyzed to determine whether these wastes could be used in production of high-performance building materials. The assessment of industrial wastes in aerated concrete production suggests that industrial wastes of hazard class IV can be recycled to produce aerated concrete. An environmentally friendly method for large-scale waste recycling, including a two-step environmentally sustainable mechanism, was developed. The basic quality indicators of the modified aerated concrete proved that the environmental safety could be enhanced by strengthening the structure, increasing its uniformity and improving thermal insulation properties. The modified non-autoclaved aerated concrete products with improved physical and operational properties were developed. They have the following properties: density – D700; class of concrete – B3.5; thermal transmittance coefficient – 0.143 W/(m·°C); frost resistance – F75.

China-Pakistan economic corridor: state and prospects

2020 ◽  
pp. 56-71
Author(s):  
S. Sutyrin ◽  
V. Kovalenko
Keyword(s):  
Large Scale ◽  
Raw Materials ◽  
The United States ◽  
World Market ◽  
Transport Infrastructure ◽  
Middle Kingdom ◽  
Joint Project ◽  
Republic Of China ◽  
History Of ◽  
Large Scale Project

The article discusses the main aspects of the most important joint project with the people’s Republic of China to create the China-Pakistan economic corridor (CPEC) in the modern history of Pakistan. The transformation of China into an economic superpower, as well as the gradual strengthening of its geopolitical capabilities, has led to the need to form a belt of States loyal to China, ensuring its uninterrupted supply of raw materials, as well as providing Beijing with its transport infrastructure to ensure its unhindered access to the world market. In many ways, Pakistan is an exemplary partner for the middle Kingdom. More than half a century of interaction between the two countries in the political and economic spheres, against the background of the gradual reduction of Pakistan’s dependence on the United States in the 1990s, has led to the fact that the PRC has become a key partner for Islamabad. The implementation of such a large-scale project is not only of great importance for the participating countries, but is also of great interest in the geopolitical context.

Materials for the history of the gospel-Baptist movement in Ukraine

1996 ◽  
pp. 4-15
Author(s):  
S. Golovaschenko ◽  
Petro Kosuha
Keyword(s):  
Large Scale ◽  
Religious Studies ◽  
Theological Seminary ◽  
National Academy Of Sciences ◽  
Evangelical Christians ◽  
Evangelical Christian ◽  
First Results ◽  
History Of ◽  
Fruitful Cooperation ◽  
Academy Of Sciences

The report is based on the first results of the study "The History of the Evangelical Christians-Baptists in Ukraine", carried out in 1994-1996 by the joint efforts of the Department of Religious Studies at the Institute of Philosophy of the National Academy of Sciences of Ukraine and the Odessa Theological Seminary of Evangelical Christian Baptists. A large-scale description and research of archival sources on the history of evangelical movements in our country gave the first experience of fruitful cooperation between secular and church researchers.

ASSESSMENT OF OIL WELL PRODUCTIVITY IN LOW-PERMEABILITY RESERVOIRS IN THE FIELDS OF EASTERN SIBERIA

2017 ◽  
pp. 30-36
Author(s):  
R. V. Urvantsev ◽  
S. E. Cheban
Keyword(s):  
Oil Recovery ◽  
Large Scale ◽  
Oil And Gas ◽  
Oil Extraction ◽  
Low Permeability ◽  
Oil Well ◽  
Eastern Siberia ◽  
Development Costs ◽  
Traditional Fields ◽  
Low Permeability Reservoirs

The 21st century witnessed the development of the oil extraction industry in Russia due to the intensifica- tion of its production at the existing traditional fields of Western Siberia, the Volga region and other oil-extracting regions, and due discovering new oil and gas provinces. At that time the path to the development of fields in Eastern Siberia was already paved. The large-scale discoveries of a number of fields made here in the 70s-80s of the 20th century are only being developed now. The process of development itself is rather slow in view of a number of reasons. Create a problem of high cost value of oil extraction in the region. One of the major tasks is obtaining the maximum oil recovery factor while reducing the development costs. The carbonate layer lying within the Katangsky suite is low-permeability, and its inventories are categorised as hard to recover. Now, the object is at a stage of trial development,which foregrounds researches on selecting the effective methods of oil extraction.

The sugar and alcohol industry in the biofuels and cogeneration era: a paradigm change (part II)

2014 ◽  
pp. 97-104 ◽  
Author(s):  
Electo Eduardo Silv Lora ◽  
Mateus Henrique Rocha ◽  
José Carlos Escobar Palacio ◽  
Osvaldo José Venturini ◽  
Maria Luiza Grillo Renó ◽  
...  
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Process Integration ◽  
Animal Feed ◽  
Raw Materials ◽  
Biofuel Production ◽  
New Paradigm ◽  
Alcohol Industry ◽  
Feed Production ◽  
Steam Parameters

The aim of this paper is to discuss the major technological changes related to the implementation of large-scale cogeneration and biofuel production in the sugar and alcohol industry. The reduction of the process steam consumption, implementation of new alternatives in driving mills, the widespread practice of high steam parameters use in cogeneration facilities, the insertion of new technologies for biofuels production (hydrolysis and gasification), the energy conversion of sugarcane trash and vinasse, animal feed production, process integration and implementation of the biorefinery concept are considered. Another new paradigm consists in the wide spreading of sustainability studies of products and processes using the Life Cycle Assessment (LCA) and the implementation of sustainability indexes. Every approach to this issue has as an objective to increase the economic efficiency and the possibilities of the sugarcane as a main source of two basic raw materials: fibres and sugar. The paper briefly presents the concepts, indicators, state-of-the-art and perspectives of each of the referred issues.

Integration of Ecological and Engineering Aspects in Planning Large Scale Tidal Power Development in the Bay of Fundy, Canada

1984 ◽  
Vol 16 (1-2) ◽  
pp. 281-295 ◽  
Author(s):  
Donald C Gordon
Keyword(s):  
Large Scale ◽  
Feasibility Studies ◽  
Bay Of Fundy ◽  
Final Decision ◽  
Power Development ◽  
Tidal Power ◽  
History Of ◽  
Scientists And Engineers ◽  
The Many ◽  
University Scientists

Large-scale tidal power development in the Bay of Fundy has been given serious consideration for over 60 years. There has been a long history of productive interaction between environmental scientists and engineers durinn the many feasibility studies undertaken. Up until recently, tidal power proposals were dropped on economic grounds. However, large-scale development in the upper reaches of the Bay of Fundy now appears to be economically viable and a pre-commitment design program is highly likely in the near future. A large number of basic scientific research studies have been and are being conducted by government and university scientists. Likely environmental impacts have been examined by scientists and engineers together in a preliminary fashion on several occasions. A full environmental assessment will be conducted before a final decision is made and the results will definately influence the outcome.

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