scholarly journals Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100MW power plant unit

2011 ◽  
Vol 15 (3) ◽  
pp. 663-676
Author(s):  
Vladan Ivanovic ◽  
Titoslav Zivanovic ◽  
Dragan Tucakovic ◽  
Goran Stupar
Keyword(s):  
Power Plant ◽  
Coal Dust ◽  
Thermal Power ◽  
Pulverized Coal ◽  
Original Solution ◽  
Power Block ◽  
Made In

After the last revitalization of thermal power block of 100 MW in TPP ?Kostolac A?, made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture channels. Deposition phenomenon manifested itself in places ahead of spherical compensators in the direction of flow of pulverized coal to the burners, due to unfavorable configuration of these channels. Coal dust deposited in the channels dried and spontaneously combusted, causing numerous damage to channels and its isolation as well as the frequent stoppage of the operation for necessary interventions. The paper presents the original solution of reconstruction of aero-mixture channels which prevented deposition of coal dust and its eventual ignition. In this way the reliability of the mill plant is maximized and higher availability of boiler and block as a whole is achieved.

Features of antibodies against benzo[a]pyrene formation in workers of coal mines and thermal power plants

2019 ◽  
pp. 9-14
Author(s):  
Ye. G. Polenok ◽  
S. A. Mun ◽  
L. A. Gordeeva ◽  
A. A. Glushkov ◽  
M. V. Kostyanko ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Reference Group ◽  
Coal Dust ◽  
Thermal Power ◽  
Coal Mines ◽  
Serum Levels ◽  
Thermal Power Plants ◽  
Immune Reactions

Introduction.Coal dust and coal fi ring products contain large amounts of carcinogenic chemicals (specifically benz[a]pyrene) that are different in influence on workers of coal mines and thermal power plants. Specific immune reactions to benz[a]pyrene therefore in these categories of workers can have specific features.Objective.To reveal features of antibodies specifi c to benz[a]pyrene formation in workers of coal mines and thermal power plants.Materials and methods.The study covered A and G class antibodies against benz[a]pyrene (IgA-Bp and IgG-Bp) in serum of 705 males: 213 donors of Kemerovo blood transfusion center (group 1, reference); 293 miners(group 2) and 199 thermal power plant workers (group 3). Benz[a]pyrene conjugate with bovine serum albumin as an adsorbed antigen was subjected to immune-enzyme assay.Results.IgA-Bp levels in the miners (Me = 2.7) did not differ from those in the reference group (Me = 2.9), but in the thermal power plant workers (Me = 3.7) were reliably higher than those in healthy men and in the miners (p<0.0001). Levels of IgG-Bp in the miners (Me = 5.0) appeared to be lower than those in the reference group (Me = 6.4; (p = 0.05). IgG-Bb level in the thermal power plantworkers (Me = 7.4) exceeded the parameters in the healthy donors and the miners (p<0.0001). Non-industrial factors (age and smoking) appeared tohave no influence on specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers.Conclusions.Specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers are characterized by peculiarities: the miners demonstrate lower levels of class A serum antibodies to benz[a]pyrene; the thermal power plant workers present increased serum levels of class G antibodies to benz[a]pyrene. These peculiarities result from only the occupational features, but do not depend on such factors as age, smoking and length of service at hazardous production. It is expedient to study specific immune reactions to benz[a]pyrene in workers of coal mines and thermal power plants, to evaluate individual oncologic risk and if malignancies occur.

scholarly journals Research on Active Dustproof of Coal Handling System

2021 ◽  
Author(s):  
Man Yi Zhou
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Coal Dust ◽  
Thermal Power ◽  
Site Investigation ◽  
Point Of View ◽  
Dust Control ◽  
Gradual Improvement ◽  
Handling System ◽  
National Environmental

Abstract Coal handling system of Power plant(CHP) is easy to produce dust, which is the most serious place of coal dust pollution in thermal power plant. With the gradual improvement of national environmental protection requirements, the control of coal dust becomes more and more important. The author believes that we should not wait for the pollution caused by coal dust to be treated, but should take the initiative to attack, and should take the initiative to prevent dust, starting from the source of coal transportation. In the process of designing coal conveying of thermal power plant for many years, the author has carried out on-site investigation on many coal handling systems, summarized experience and obtained relevant data. Through further analysis, the main causes of coal dust are mastered, and the relevant measures of active dust control are put forward from the technical point of view, in order to provide help for the comprehensive control of coal dust in power industry.

The Influence of Direct Normal Irradiance Variation on the Optimal Parabolic Trough Field Size: A Problem Solved With Technical and Economical Simulations

Solar Energy ◽  
2002 ◽  
Author(s):  
Volker Quaschning ◽  
Rainer Kistner ◽  
Winfried Ortmanns
Keyword(s):  
Power Plant ◽  
Solar Irradiance ◽  
Thermal Power ◽  
Field Size ◽  
Parabolic Trough ◽  
Simulation Tools ◽  
Direct Normal Irradiance ◽  
Solar Field ◽  
The Given ◽  
Made In

One of the main problems when designing a solar thermal power plant is to find the optimal parabolic trough field size. Errors made in this context can easily lead into a financial disaster. Simulation tools that handle all aspects of a power plant (technical as well as economical) treat such economical problems as a whole and can be very helpful during the design process. However, even the smartest simulation tool depends significantly on the input parameters, such as the solar irradiance. As a result of the given considerations a new method for estimating the solar field size as a function of the solar irradiance is proposed. Additionally, this paper demonstrates a path to simulate the complexity of a parabolic trough power plant.

Numerical modeling of pulverized coal combustion at thermal power plant boilers

2015 ◽  
Vol 24 (3) ◽  
pp. 275-282 ◽  
Author(s):  
Aliya Askarova ◽  
Saltanat Bolegenova ◽  
Valeryi Maximov ◽  
Meruyert Beketayeva ◽  
Pavel Safarik
Keyword(s):  
Numerical Modeling ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Coal Combustion ◽  
Thermal Power ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion

A Innovative Solution to the Problem of Mill Rejects in Thermal Power Plants

2005 ◽  
Author(s):  
Animesh Dutta ◽  
Prabir Basu ◽  
Amit Ghosh ◽  
Prasun Chakraborty
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Circulating Fluidized Bed ◽  
Thermal Power ◽  
Pulverized Coal ◽  
Heating Value ◽  
Innovative Solution ◽  
Main Steam ◽  
Operating Plant ◽  
Waste Coal

The present paper discusses an innovative means for solving the problem of accumulation of waste coal in some pulverized coal fired plants. A major waste in a pulverized coal fired power plant is the reject produced from pulverizing mills. When coal is ground in a bowl mill heavy mineral matters are separated, but they still contain a small amount of coal mixed. However, the heating value of the rejects is generally too low for combustion in conventional boilers. As a result they find limited commercial use and are dumped in the plant adding to the fugitive dust, leaching problem and most importantly devastating damage to the landscape. The amount of mill reject is significant in older operating plant. In India for example, it is about 0.5–1.0% of coal throughput into the boiler. In this paper, an exercise is undertaken to show how these rejects could be burnt to produce low pressure process steam, which could save the bleeding of main steam of the power plant and thereby augment power generation. A subcompact novel circulating fluidized bed boiler has been designed, built and commissioned for this purpose. The present paper discusses the finding of above exercise.

Primorskaya Thermal Power Plant: Construction of Modern Pulverized Coal-Fired Boilers

2018 ◽  
Vol 52 (2) ◽  
pp. 197-206 ◽  
Author(s):  
A. R. Kvrivishvili ◽  
S. A. Samokhin ◽  
T. N. Morozova ◽  
A. V. Gruznov ◽  
A. I. Tsepenok ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Pulverized Coal ◽  
Plant Construction
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