scholarly journals MEASUREMENT OF THE CONTENT OF MONOETHANOLAMINE DURING THE CONTROL OF THE TECHNOLOGICAL PROCESS OF DESULFURIZATION AND IN THE ENVIRONMENTAL OBJECTS

2021 ◽  
Vol 1 ◽  
pp. 28-36
Author(s):  
A.Yu. Martynova ◽  
A.I. Larina ◽  
V.A. Saraeva
Keyword(s):  
Sodium Hydroxide Solution ◽  
Coke Oven ◽  
Coke Production ◽  
Sulfur Compounds ◽  
Raw Material ◽  
Test Substance ◽  
Material Base ◽  
Chemical Production ◽  
Coke Oven Gas ◽  
Environmental Objects

The problem of cleaning coke oven gas from sulfur compounds, despite their recent decrease in the raw material base of coking, remains relevant in connection with the requirements to reduce sulfur dioxide emissions into the atmosphere. When using monoethanolamine for the purification of coke oven gas from sulfur compounds, production workers are faced with the problems of determining the exact concentration both in solutions and in coke oven gas and in environmental objects. The article provides an overview of the currently existing methods for the quantitative determination of the content of monoethanolamine in liquid and gaseous media. The results of studies of the possibility of their use in the conditions of by-product coke production are presented, directions of improvement of the known methods are determined in order to eliminate the influence of accompanying components inherent in by-product coke production (in particular, ammonia, amines, phenols, etc.), which distort the analysis results. The authors describe the methods of increasing the selectivity of analytical methods for determining the content of monoethanolamine in: – coke oven gas - based on the absorption of the test substance from coke oven gas by a solution of orthoboric acid, followed by its determination in a solution with pnitrophenyldiazonium; – the air of the working area under the conditions of by-product coke production - it was proposed to eliminate the negative effect of hydrogen sulfide and phenol using an absorber containing a sodium hydroxide solution located in front of the absorber with a hydrochloric acid solution for monoethanolamine (a revised measurement procedure with additions set out in accordance with the requirements of the current legislation in the field of metrology and established metrological characteristics, agreed by the Chief Sanitary Doctor of Ukraine). The directions of research necessary for the development of a method for determining the content of monoethanolamine in process waters of coke-chemical production are outlined. Keywords: desulfurization, monoethanolamine, content determination, selectivity, ammonia, p-nitrophenyldiazonium, coke oven gas, complex compound, color intensity, photometry, measurements. Corresponding author A.Yu. Martynova, e-mail: [email protected]

scholarly journals MEASUREMENT OF THE CONTENT OF MONOETHANOLAMINE DURING THE CONTROL OF THE TECHNOLOGICAL PROCESS OF DESULFURIZATION AND IN THE ENVIRONMENTAL OBJECTS

2021 ◽  
Vol 1 ◽  
pp. 28-36
Author(s):  
A.Yu. Martynova ◽  
V.A. Saraeva ◽  
A.I. Larina
Keyword(s):  
Sodium Hydroxide Solution ◽  
Coke Oven ◽  
Coke Production ◽  
Sulfur Compounds ◽  
Raw Material ◽  
Test Substance ◽  
Material Base ◽  
Chemical Production ◽  
Coke Oven Gas ◽  
Environmental Objects

The problem of cleaning coke oven gas from sulfur compounds, despite their recent decrease in the raw material base of coking, remains relevant in connection with the requirements to reduce sulfur dioxide emissions into the atmosphere. When using monoethanolamine for the purification of coke oven gas from sulfur compounds, production workers are faced with the problems of determining the exact concentration both in solutions and in coke oven gas and in environmental objects. The article provides an overview of the currently existing methods for the quantitative determination of the content of monoethanolamine in liquid and gaseous media. The results of studies of the possibility of their use in the conditions of by-product coke production are presented, directions of improvement of the known methods are determined in order to eliminate the influence of accompanying components inherent in by-product coke production (in particular, ammonia, amines, phenols, etc.), which distort the analysis results. The authors describe the methods of increasing the selectivity of analytical methods for determining the content of monoethanolamine in: – coke oven gas - based on the absorption of the test substance from coke oven gas by a solution of orthoboric acid, followed by its determination in a solution with pnitrophenyldiazonium; – the air of the working area under the conditions of by-product coke production - it was proposed to eliminate the negative effect of hydrogen sulfide and phenol using an absorber containing a sodium hydroxide solution located in front of the absorber with a hydrochloric acid solution for monoethanolamine (a revised measurement procedure with additions set out in accordance with the requirements of the current legislation in the field of metrology and established metrological characteristics, agreed by the Chief Sanitary Doctor of Ukraine). The directions of research necessary for the development of a method for determining the content of monoethanolamine in process waters of coke-chemical production are outlined. Keywords: desulfurization, monoethanolamine, content determination, selectivity, ammonia, p-nitrophenyldiazonium, coke oven gas, complex compound, color intensity, photometry, measurements. Corresponding author A.Yu. Martynova, e-mail: [email protected]

scholarly journals Raw material base for coking of the Coke Production of PJSC "ARCELORMITTAL KRYVYI RIH" in the period from 2017 to 2021.

2021 ◽  
Vol 4 ◽  
pp. 4-9
Author(s):  
N.V. Mukina ◽  
D.V Miroshnichenko
Keyword(s):  
Quality Indicators ◽  
Coke Oven ◽  
Ash Content ◽  
Raw Material ◽  
Material Base ◽  
Chemical Production ◽  
Total Sulfur Content ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
Furnace Coke

RAW MATERIAL BASE FOR COKING OF THE COKING PRODUCTION OF PJSC "ARCELORMITTAL KRYVYI RIH" IN THE PERIOD FROM 2017 TO 2021 © N.V. Mukina (Coke-chemical production of PJSC "ArcelorMittal Kryvyi Rih", 50095, Dnepropetrovsk region, Kryvyi Rih, Krivorozhstal st., 1, Ukraine), D.V. Miroshnichenko, Doctor of Technical Sciences (NTU "Kharkiv Polytechnic Institute", 61002, Kharkiv, st. Kirpicheva, 2, Ukraine) The article presents the data on coal components that were used in the charge for coking coke oven batteries №№1-4 (bulk coal charge) and №№ 5, 6 (tamped coal charge) of the coke-chemical production of PJSC "ArcelorMittal Kryvyi Rih" in the period from 2017 to 2021, as well as averaged information on some quality indicators of the produced coke. In general, the coal raw material base of the enterprise for the last five years has been of a stable inter-basin nature with a predominance of coals from the USA, Kazakhstan, and the Russian Federation. It is shown that, as the tamping technology suggests, moisture content, bulk density and content of classes less than 0.16 and less than 3.0 mm in coal charges supplied to the coal waste plant. №№ 5, 6 are significantly higher than the values of similar indicators of coal charges supplied to the numbers 1-4. Along with this, due to the use of coals of a certain quality, ash content, total sulfur content and the thickness of the plastic layer in coal charges supplied to the coal bunker №№ 1-4, is slightly higher than similar indicators of coal charges supplied to the boiler №№ 5, 6. In total, during 2017-2021, the composition and quality indicators of the coal charge for the production of coke at the boiler plant №№ 1-4 practically did not change, while in the coal charge for the production of coke on coke oven batteries №№ 5, 6 there is a decrease in the share of highly volatile coals with a simultaneous increase in the content of medium-volatile and low-volatile components. The given values of the quality indicators of the obtained blast-furnace coke indicate that the use of tamping technology makes it possible to obtain blast-furnace coke of a higher quality than by using a traditional technology. In particular, the coke obtained at the oven batteries №№ 5, 6 are characterized by lower values of ash content, total sulfur content and abrasion (M10) with higher values of mechanical strength in terms of M25 and post-reaction strength (CSR). Keywords: coal, inter-basin raw material base, coking, charge tamping, coke quality. Corresponding author N.V. Mukina, е-mail: [email protected]

scholarly journals Preparation of coal charge for coke battery complex №. 5, 6 at Coke Production of PJSC «ArcelorMittal Kryvyi Rih».

2021 ◽  
Vol 3 (3) ◽  
pp. 8-20
Author(s):  
N.V. Mukina ◽  
A.P. Chernousova ◽  
D.V. Miroshnichenko ◽  
N.А. Desna ◽  
A.V. Sytnik ◽  
...  
Keyword(s):  
Shear Strength ◽  
Moisture Content ◽  
Raw Materials ◽  
Coke Production ◽  
Coke Battery ◽  
Raw Material ◽  
State Enterprise ◽  
Material Base ◽  
Chemical Production ◽  
Coal Charge

PREPARATION OF COAL CHARGE FOR COKE BATTERY COMPLEX NO. 5, 6 AT COKE PRODUCTION OF PJSC «ARCELORMITTAL KRYVYI RIH» © N.V. Mukina, A.P. Chernousova (Coke Production of PJSC «ArcelorMittal Kryvyi Rih», 50095, Dnipropetrovsk region, Kryvyi Rih, Kryvorizhstal str., 1, Ukraine), D.V. Miroshnichenko, Doctor of Technical Sciences (NTU "Kharkov Polytechnic Institute", 61002, Kharkov, Kirpicheva st, 2, Ukraine), N.А. Desna, PhD in technical sciences, A.V. Sytnik, PhD in technical sciences, V.V. Koval (State Enterprise "Ukrainian State Research Coal Chemical Institute (UHIN)", 61023, Kharkov, Vesnina st., 7, Ukraine) The article highlights the methodological foundations and the results of research on the development of criteria and practical recommendations aimed at optimizing the composition of coal charges of coke oven batteries No. 5, 6 of the coke-chemical production of РJSC "ArcelorMittal Kryvyi Rih" to obtain coke of the required quality from the rammed charge. The defining indicator of the production of coke using the technology of compaction of coal charges is the strength of the compacted cake. The most successful way to determine this indicator is to assess the strength by an indirect method according to the value of the shear strength (ϭss) of rammed batch samples in laboratory conditions. This method allows to identify changes in the strength of the coal cake and take the necessary measures to prevent or minimize the number of collapses during loading. The article gives images of installations for laboratory compaction of coal charge and determination of the shear strength of the resulting cake; the methodology for determining this indicator is given. As a result of the above studies, it has been established that the density of the tamped cake from crushed individual coals included in the raw material base of the by-product coke production of РJSC "ArcelorMittal Kryvyi Rih" is closely related to the content in coal raw materials of classes <3 and <0.5 mm. An increase in the content of classes <3 and <0.5 mm leads to an increase in the index ϭss. It is also shown that the actual values of ϭss for binary coal mixtures are higher than the calculated ones. It has been established that with an increase in the level of grinding of coal charges from 90,1 to 92,2 %, an increase in the value of the index ϭss is observed from 12.5 to 15.0 кРа, that is, by 20 %. With an increase in the moisture content of the charge from 10,0 to 11,5 %, the strength of the compacted cake increases. An increase in the moisture content above 12 % is undesirable due to a decrease in the strength of the rammed coal cake, as well as an increase in heat consumption for coking due to the consumption of moisture evaporation. Keywords: coal, preparation, shear strength of the rammed cake, moisture content, particle size distribution. Corresponding author N.V. Mukina, е-mail: [email protected]

The interasin raw material base of coke-chemical production of Ukraine: Problems of charge formation, its preparation and coking

2018 ◽  
Vol 5 (6) ◽  
pp. 3-7 ◽  
Author(s):  
E.S. Popov ◽  
V.I. Gavrilyuk ◽  
N.V. Mukina ◽  
E.T. Kovalev ◽  
I.D. Drozdnik ◽  
...  
Keyword(s):  
Raw Material ◽  
Material Base ◽  
Chemical Production ◽  
Charge Formation

scholarly journals The selection of technological basis of deep processing of coal.

2021 ◽  
Vol 4 ◽  
pp. 15-21
Author(s):  
M.O. Gordienko
Keyword(s):  
Melting Point ◽  
Environmental Safety ◽  
Coke Production ◽  
Raw Material ◽  
State Enterprise ◽  
Material Base ◽  
Deep Processing ◽  
Technological Basis ◽  
Thermochemical Processing ◽  
Selection Of

THE SELECTION OF TECHNOLOGICAL BASIS OF DEEP PROCESSING OF COAL © M.O. Gordienko (State Enterprise "Ukrainian State Research Coal Chemical Institute (UHIN)", 61023, Kharkov, Vesnina st., 7, Ukraine) The article is devoted to the analysis of the possibility of expanding the raw material base of thermal energy, as well as meeting the demand for motor fuels and chemical products through the thermochemical processing of coal, the reserves of which are large enough and available for extraction and transportation. Moreover, in contrast to technologies such as methanization and liquefaction, the most promising type of deep processing of coal seems to be its gasification. This process is carried out in sealed devices of high power according to the technologies that have a long history of improvement on an industrial scale by the world's leading companies. It was emphasized that Ukraine has significant reserves of low-calorie coal (constantly expanding due to waste of coal preparation), the thermochemical processing of which can significantly expand the domestic energy base. The basic principles of classification and technological foundations of existing industrial and industrial research installations for gasification of coal and similar materials are given. The basic diagrams and main parameters of the existing installations, which carry out the gasification process at temperatures below the melting point of the mineral (ash-forming) components of the raw material, are described - Sasol Lurgi and SES Gasification Technology (SGT). Based on the data on the world experience in the operation of thermochemical coal processing units, it is shown that low-temperature (carried out at a temperature below the melting point of the mineral ashforming components) gasification of various types of non-coking coal with certain technological solutions can be no less effective than more complex and expensive high-temperature technologies. There are grounds for believing that the efficiency of gasification with ash removal in a solid state can be further increased by using some of the technological capabilities available in coke production. Keywords: brown coal, non-coking coals, thermochemical processing, gasification, efficiency, degree of carbon conversion, energy carriers, synthesis gas, environmental safety. Corresponding author M.O. Gordienko, е-mail: [email protected]

scholarly journals Production and quality of blast furnace coke in Ukraine

2007 ◽  
Vol 1 (2) ◽  
pp. 91-96
Author(s):  
Yevgen Kovalov ◽  
Keyword(s):  
Coke Quality ◽  
Coke Production ◽  
Raw Material ◽  
Metallurgical Coke ◽  
Material Base ◽  
Preparation Methods ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
Furnace Coke

This research displays the state of metallurgical coke production in Ukrainew with special attention to the raw material base for production of coke and its quality. Besides the following essay deals with the detailed analysis of preparation methods of coal charge for coking, including thermal treatment and stamp charging and formulates the main ways of upgrading coke quality considering the rational technology of coking.

scholarly journals Methodical provisions on the distribution of total technological energy resources between separate types of outputs of multi-product manufacture

2020 ◽  
Vol 2020 (4) ◽  
pp. 58-62
Author(s):  
G.O. Kuts ◽  
◽  
O.I. Teslenko ◽  
Keyword(s):  
Blast Furnace ◽  
Cast Iron ◽  
Energy Consumption ◽  
Coke Oven ◽  
Coke Production ◽  
Energy Resources ◽  
Coke Oven Gas ◽  
Furnace Production ◽  
Blast Furnace Production ◽  
Product Manufacture

The question of methodical approach to the distribution of total technological energy consumption between separate kinds of outputs of multi-product manufacture is considered. Such ferrous metallurgy industries include blast furnace process, oxygen, energy, and coke production. The theoretical basis of proposed methodological provisions is Hess's law on thermochemical reactions and its consequences. For manufactures where the products correspond to the types of energy resources and have calorific value, the distribution of energy consumption is carried out according to the weighty volumes of types of products and their heat of combustion (for example, coke production). For industries that have multi-product manufacture of non-combustible products, the distribution of energy consumption between products is based on the weighty volumes of products and their heat capacity (for example, blast furnace iron production). In accordance with the proposed methodological provisions, we present calculation formulas for determining the distribution of total technological energy consumption for separate types of coke and blast furnace production. The results calculations of energy consumption are presented separately for coke, coke-oven gas, and chemical products of coke manufacture as well as for cast iron and furnace slag for blast furnace production. Calculations show a significant reduction of the energy consumption of coke, with regard for the distribution of energy consumption for individual outputs of coke production (by 27.2%) and pig iron in blast furnace production (a decrease in 31.8%.). The proposed methodological provisions for the distribution of total technological energy consumption between separate types of outputs of multi-product industries can be used in such manufactures of oil refining and chemical industry, in the processing industry, in particular, in the production of dairy products, etc. Keywords: energy consumption, multi-product manufacture, coke, coke-oven gas, cast iron, slag, heat of combustion

scholarly journals THE PREPARATION OF WATER-OLIVE EMULSIONS FROM WASTE AND BY-PRODUCTS OF COKECHEMICAL PRODUCTION OF PJSC "YUZHKOKS" FOR ADJUNCTION TO COAL BLEND

2020 ◽  
Vol 1 ◽  
pp. 9-18
Author(s):  
A.L. Borisenko ◽  
M.I. Bliznyukova ◽  
V.A. Panasenko
Keyword(s):  
Coal Tar ◽  
Coke Oven ◽  
Physicochemical Characteristics ◽  
Coke Production ◽  
Necessary Condition ◽  
Coke Oven Gas ◽  
Alkaline Water ◽  
Coal Blend ◽  
Neutralizing Agent ◽  
By Products

The existing experience and results of previous studies for the production of emulsions from resinous waste and by-products of coke production has been analyzed. A necessary condition for the creation of stable emulsion is the presence in its composition of three main components: diluent oil, emulsifiers and a neutralizing agent. In order to determine the suitability of waste and by-products of production of PJSC "YUZHKOKS" as components of water-oil emulsions, the physicochemical characteristics of acid tar of ammonia capture, neutralized acid tar of rectification of crude benzene, resins and oils of biochemical plant, non-boiling residues of monoethanolamine desulfurization of coke oven gas, alkaline water, storage waste and coal tar has been studied. The ability of these materials to mix with each other has been also studied. As a result of research, it has been found that the presents of coal tar in the composition of the diluent oil leads to the formation of more stable over time emulsions with low viscosity. The amount of coal tar in diluent oils should be 50-70 %. Non-boiling residues of monoethanolamine purification of coke oven gas from hydrogen sulfide proved to be a better neutralizing agent than alkaline water, in particular, for the reason that in some cases their use allowed to obtain homogeneous mixtures without delamination and separation of the aqueous layer by mixing emulsion components. It has been shown that when emulsions preparing it is important to follow the order of mixing the components. Based on the obtained data, formulations have been developed and the conditions for obtaining stable emulsions has been determined. Recommendations for obtaining emulsions for the purpose of their qualified use by feeding to the coal blend and improving the operation of the existing plant for waste and by-products utilization at the enterprise has been formulated.

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