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Energy Efficiency – Ecological and Economic Profitability Cover

Energy Efficiency – Ecological and Economic Profitability

Open Access
|Jan 2021

Figures & Tables

Figure 1.

Rotary kilns (top view) (1. One of the three old rotary kilns – currently out of service, intended for demolition; 2. One of the three old rotary kilns – currently being demolished; 3. New rotary kiln)
Rotary kilns (top view) (1. One of the three old rotary kilns – currently out of service, intended for demolition; 2. One of the three old rotary kilns – currently being demolished; 3. New rotary kiln)

Fuel and energy consumption for clinker production in the base year [cement plant data]

Type of fuelFuel consumption [Mg /year]Calorific value [kJ /kg]Fuel chemical energy [GJ /year]Emission factor [Mg CO2 /GJ]CO2 emissions [Mg /year]
Coal27 922,16130 511 * 851 933,05493,08079 297,928
RDF alternative fuel55 306,33818 5611 026 540,94087,40089 719,678
Dry sewage sludge2 840,09513 51238 375,36489,0003 415,407
Heating oil45,14942 4991 918,78774,000141,989
Sum 86 113,743 1 918 768,145 172 575,002

Electricity consumption data for a new furnace installation

kWht Kl.kWh/t
September838 118,427 850,430,1
October1 088 692,633 979,132,0
average963 405,5-31,1

Electricity consumption data for the furnace installation in the base year (before modernization)

kWht Kl.kWh/t
January1 223 212,030 625,239,9
February597 631,413 412,244,6
March1 143 617,932 926,034,7
April1 191 783,232 393,836,8
May1 287 485,237 446,934,4
June1 255 544,935 243,635,6
July1 291 080,634 320,037,6
August1 239 850,633 623,736,9
September1 267 597,432 423,839,1
October1 151 178,029 759,838,7
November1 256 302,034 130,736,8
December1 324 375,035 584,237,2
average--37,7
sum14 229 658,2--

Electricity consumption by a cement plant in September and October after modernization

ParametersFeeConsumption
UnitMWhPLN
The morning peak12 319,0043 385 212,31 zl
Afternoon peak7 059,2232 347 205,31 zl
The rest of the day71 444,77612 451 814,95 zl
Overall90 823,00318 184 232,57 zl
Contract power-2 746 800,00 zl
Variable transmission fee-2 516 384,48 zl
Power exceeded (PDG)-- zl
Reactive power exceeded-1 416,81 zl
Capacitive reactive power-341,54 zl
Subscription fee-5 280,00 zl
Including fixed fees-2 752 080,00 zl
Including transmission fees-2 518 142,84 zl
Including Energy charges-18 184 232,57 zl
Average price of energy258,24-
Energy consumption90 823,00323 454 455,40 zl

Fuel prices in the base year

Fuel typeFuel cost before modernization PLN /tFuel cost after modernization PLN /t
Coal471,50350,00
Heating oil2 521,092587,77
RDF55,3530,67
Sewage sludge38,3748,46

Fuel consumption before and after modernization

Fuel typebefore modernization PLN/yearafter modernization PLN/year
Coal 13 165 298,917 827 144,50
Heating oil 113 824,69352 454,27
RDF 3 061 205,811 947 038,33
Sewage sludge 108 974,4541 899,97
Sum 16 449 303,8610 168 537,08

Electricity consumption by a cement plant in the base year

ParametersFeeConsumption
UnitMWhPLN
The morning peak12 319,0043 385 212,31 zl
Afternoon peak7 059,2232 347 205,31 zl
The rest of the day71 444,77612 451 814,95 zl
Overall90 823,00318 184 232,57 zl
Contract power-2 746 800,00 zl
Variable transmission fee-2 516 384,48 zl
Power exceeded (PDG)-- zl
Reactive power exceeded-1 416,81 zl
Capacitive reactive power-341,54 zl
Subscription fee-5 280,00 zl
Including fixed fees-2 752 080,00 zl
Including transmission fees-2 518 142,84 zl
Including Energy charges-18 184 232,57 zl
Average price of energy258,24-
Energy consumption90 823,00323 454 455,40 zl
DOI: https://doi.org/10.21307/acee-2020-032 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
Language: English
Page range: 85 - 92
Submitted on: Nov 5, 2020
Accepted on: Nov 14, 2020
Published on: Jan 27, 2021
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Barbara HAWRYLAK, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.