The Cost-Efficiency Analysis of a System for Improving Fine-Coal Combustion Efficiency of Power Plant Boilers

Abstract

Hard coal is widely used as a source of energy, and a number of catalysts have been developed to minimize the noxious impact of this fuel on combustion. This paper presents the cost-efficiency analysis of a system for improving the combustion of solid fuels, especially fine coal, in power boilers. The system is provided with a control and supervision device. It has been designed for better accuracy in controlling the boiler operating parameters, with a view to improving combustion efficiency due to the use of catalysts. The tests were carried out for system capacities ranging from 3 to 100 MW. It was found that, depending on the size of the system in the range of 3–100 MW, savings in the fuel consumption ranged from 2% to 8% due to the implementation of novel solutions in the boiler plant operation and from 2 to 6% due to the use of the combustion catalysts. Apart from boosting energy efficiency, the use of catalysts and the efficiency-boosting system resulted in the costs of overhauls being cut by about 20%. The payback time depends on system capacities, and it is between 6.75 and 1.74 years for capacities ranging from 3 to 75 MW and 2.0 years for a 100 MW plant.

Physicochemical Properties of Biochar Produced from Goldenrod Plants

“…Compared with solid fossil fuels, the calorific value of the obtained torrefaction from goldenrod is similar. The calorific value of hard coal is 20.9–33.4 MJ∙kg −1 [ 54 , 55 , 56 , 57 ] and brown coal (lignite) 5.9–24.9 MJ∙kg −1 [ 58 , 59 , 60 , 61 , 62 ].…”

A System of Improving Energy and Ecological Efficiency, Using the Example of Fuel Oil Combustion in Power Plant Boilers

“…The results of earlier tests, as described in [31,36], indicated that the use of a system designed to improve the energy efficiency of boiler systems is only cost effective for boiler capacities from 1 to 5 MW.…”

“…The system is designed to improve the efficiency of energy generation and distribution, resulting in reduced environmental emissions of harmful combustion products. Both the extra energy generated and the reduced emission of harmful compounds are the effects of the use of the modifier and of the fuel oil combustion system refurbishment, shown in [31,32,36].…”

Monitoring of Thermal and Flow Processes in the Two-Phase Spray-Ejector Condenser for Thermal Power Plant Applications

“…Ziembicki et al [1] analysed heat recovery from combustion gases in heating plants using gaseous and liquid fuels. Tic and Guziałowska-Tic [2] investigated the cost-efficiency dependence of the combustion of solid fuel improvement in power boilers, especially fine coal.…”