scholarly journals Techno-economic analysis study of coal gasification plant into various strategic chemicals

2021 ◽  
Vol 882 (1) ◽  
pp. 012080
Author(s):  
R Tetrisyanda ◽  
A Wiguno ◽  
G Wibawa
Keyword(s):  
Coal Gasification ◽  
Raw Materials ◽  
Low Rank ◽  
Chemical Production ◽  
Synthetic Natural Gas ◽  
Production Technologies ◽  
Chemical Products ◽  
Gasification Plant ◽  
Indonesian Coal ◽  
Coal Reserves

Abstract The abundant amount of coal reserves in Indonesia has a great potential to be used as a source of raw materials and energy for industry. However, the use of coal in meeting domestic needs is not optimally utilized, as indicated by the high number of raw coal exports abroad. In addition, the low quality of coal is also one of the reasons for its low utilization. The processing of coal into synthetic gas (syngas) opens the way downstream of coal-derived chemical products, namely dimethyl ether (DME), methanol, ammonia and synthetic natural gas (SNG). The integration of various chemical products is expected to maximize the potential of Indonesian coal. The plant capacity was 11540 tpd (tons per day) low-rank wet coal producing DME 2000 tpd, methanol 2500 tpd, ammonia 600 tpd and SNG 25 MMSCFD (million standard cubic feet per day). These chemical production technologies have been proven and are commercially available. Based on the results of the process and economic simulations, it is found that the establishment of a coal gasification plant into various integrated chemicals is feasible to be established with an internal rate of return (IRR) of 12.46% and a payback period of 6 years and 5 months.

Review Lecture: Novel organic chemical processes

1968 ◽  
Vol 303 (1474) ◽  
pp. 259-273
Keyword(s):  
Organic Chemistry ◽  
Petroleum Hydrocarbons ◽  
Large Scale ◽  
Raw Materials ◽  
Organic Chemical ◽  
Chemical Production ◽  
Continuous Processes ◽  
Oxygenated Compounds ◽  
Recent Developments ◽  
Chemical Products

The purpose of this paper is to review some recent developments in industrial organic chemistry which have led, or seem likely to lead, to the establishment of new industrial processes for the production of bulk organic chemical products. The significance of some of the new and cheap, or potentially cheap, intermediates produced in such processes is pointed out in a few selected cases. In this review I shall concentrate on major new processes leading to large-scale organic chemical production. This invariably means continuous processes using as raw materials either petroleum hydrocarbons, including natural gas, or their cracked products. Because many important organic chemicals are oxygenated compounds, it is quite natural that the reaction of hydrocarbons with oxygen or air should have become quantitatively the most important area of industrial organic chemistry, apart that is from the field of polymerization. Certain processes involving the simultaneous reaction of hydrocarbons with oxygen and with a third reactant (such as hydrogen chloride, ammonia, etc.) have recently become very important industrially and will be reviewed in some detail. The potentialities of reactions involving hydrocarbons and carbon monoxide, cheap and readily available raw materials, will also be considered.

RHEOLOGICAL PROPERTIES OF CERAMIC MASSES: IMPROVEMENT BY COMPLEX MATERIAL ACTIVATION

2019 ◽  
Vol 16 (3) ◽  
pp. 334-351
Author(s):  
A. S. Mavlyanov ◽  
E. K. Sardarbekova
Keyword(s):  
Rheological Properties ◽  
Raw Materials ◽  
Sensitivity Coefficient ◽  
Raw Material ◽  
Clay Material ◽  
Fibrous Materials ◽  
Chemical Production ◽  
Production Wastes ◽  
Pass Through ◽  
The Masses

Introduction. The objective of the research is to study the effect of the complex activation of the alumina raw material on the rheological properties of the ceramic mass. In addition, the authors investigate solutions for the application of optimal coagulation structures based on loams and ash together with plastic certificates.Materials and methods. The authors used the local forest like reserves of clay loams at the BashKarasu, ash fields of the Bishkek Central Heating Centre (BTEC) and plasticizer (sodium naphthenate obtained from alkaline chemical production wastes) as fibrous materials. Moreover, the authors defined technological properties of raw materials within standard laboratory methodology in accordance with current GOSTs.Results. The researchers tested plastic durability on variously prepared masses for the choice of optimal structures. The paper demonstrated the plastic durability of complexly activated compounds comparing with non-activated and mechanically activated compounds. The sensitivity coefficient increased the amount of clay loams by mechanically and complexly activated, which predetermined the possibility of intensifying the process of drying samples based on complexly activated masses.Discussion and conclusions. However, mechanical activation of clay material reduces the period of relaxation and increases the elasticity coefficient of ceramic masses by 1.8–3.4 times, meanwhile decreases elasticity, viscosity and the conventional power during molding, which generally worsens the molding properties of the masses. Сomplex activation of ash-clay material decreases the period of relaxation and provides an increase in elasticity, plasticity of ceramic masses by 46–47%, reduction in viscosity by 1.5–2 times, conventional power on molding by 37–122% in comparison with MA clay loams. Ceramic masses based on spacecraft alumina raw materials belong to the SMT with improved rheological properties; products based on them pass through the mouthpiece for 5–7 seconds.

Catalytic effects of ash components in low rank coal gasification

Fuel ◽  
1990 ◽  
Vol 69 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Ralf Köpsel ◽  
Henryk Zabawski
Keyword(s):  
Coal Gasification ◽  
Low Rank ◽  
Low Rank Coal ◽  
Catalytic Effects

scholarly journals State and prospects of competition, communications and logistics of agro-food products

2021 ◽  
Vol 262 ◽  
pp. 03017
Author(s):  
Hadis Rakhaev ◽  
Anzor Gyatov ◽  
Zalina Ivanova ◽  
Elvira Kokova ◽  
Akhmat Chochaev
Keyword(s):  
Communication Systems ◽  
Raw Materials ◽  
Agricultural Products ◽  
Real Situation ◽  
The Real ◽  
Logistics Networks ◽  
Chemical Products ◽  
The Government ◽  
Set Up ◽  
New Criteria

Communication and logistics are one of the most important features of the markets; they permeate and constitute its content. Communication and logistics for commodity producers are also as important attribute as production itself, and sometimes even more. For this reason, commodity producers themselves directly and explicitly, but more often through other institutions (including the government), tend to set up stable exclusive communication systems and logistics. This article analyzes the state of the prospects for the formation of communications and logistics networks for agricultural products. The correlation of existing communications and logistics of agricultural products and other types of products (including finished industrial products of various purposes: from machinery, equipment, chemical products to defense, hydrocarbon, carbon and other raw materials, timber and other goods) is analyzed. The established linkages are revealed. They were quantified, calibrated and classified. The existing principles (comparative and absolute advantages) are reviewed and new principles are formulated (marginal player, marginal linkages), which describe the real situation in the markets of agricultural products more correctly. New criteria for grouping and reformatting existing communication and logistics networks, which make it possible to increase the competitiveness of domestic agricultural products are proposed.

scholarly journals Simulation of Coal Gasification in a Low-Temperature, High-Pressure Entrained-Bed Reactor with a Volatiles Condensation and Re-Evaporation Model

2019 ◽  
Vol 9 (3) ◽  
pp. 510
Author(s):  
Ming-Hong Chen ◽  
Yau-Pin Chyou ◽  
Ting Wang
Keyword(s):  
High Pressure ◽  
Coal Gasification ◽  
Simulation Models ◽  
Operating Pressure ◽  
Synthetic Natural Gas ◽  
Gasification Process ◽  
Exit Temperature ◽  
Computational Fluid Dynamics Cfd ◽  
Lower Temperature ◽  
Entrained Flow Gasification

The objective of this study is to implement a tar condensation and re-vaporization sub-model in a previously established Computational Fluid Dynamics (CFD) model for the Entrained Slagging Transport Reactor (E-STR) gasifier, modified from the existing E-Gasifier simulation models in previous studies. The major modifications in E-STR, compared to the existing E-GasTM design, include higher operating pressure and lower temperature, with the aim of achieving a higher H2/CO ratio of syngas, which is more favorable for synthetic natural gas (SNG) production. In this study, the aforementioned sub-model is described by the UDF (User-Defined Function) and incorporated in a previously developed computational model for entrained-flow gasification process, to study the syngas composition without implementing a tars-cracking catalyst in the E-STR gasifier. The results show that incorporating the tar condensation model leads to a formation of approximately 6.47% liquid volatiles and an exit temperature increase about 135 K, due to the release of latent heat. These sub-models have been successfully implemented and will be useful in the condition that the gasifier temperature is intentionally kept low, just as the E-STR gasifier. The results indicate that high pressure and less oxygen feed produce a higher H2/CO ratio, more favorable for SNG production.

Underground Сoal Gasification Efficiency in Areas of High Faulting Frequency

2017 ◽  
Vol 25 ◽  
pp. 118-127
Author(s):  
Vasyl Lozynskyi
Keyword(s):  
Coal Seam ◽  
Coal Gasification ◽  
Analytical Calculation ◽  
Underground Coal Gasification ◽  
Practical Application ◽  
Gasification Efficiency ◽  
Rational Order ◽  
Coal Reserves ◽  
Gasification Technology ◽  
Generator Gas

The purpose of this paper is substantiating of efficiency during application of borehole underground coal gasification technology based on target coal seam geology. Comprehensive methodology that included analytical calculation is implemented in the work. To determine the efficiency of coal seam gasification in faulting areas, an economic calculation method was developed. The obtained conditions of coal seam allow to provide rational order of mine workings. Conclusions regarding the implementation of the offered method are made on the basis of undertaken investigations. The obtained results with sufficient accuracy in practical application will allow consume coal reserves in the faulting zones using environmentally friendly conversion technology to obtain power and chemical generator gas, chemicals and heat.

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