NATURAL GAS SAVING IN THE PROCESSES OF DRYING AND HEATING OF METALLURGICAL LADLES

  • R.A. Pylypenko The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • R.V. Melnikov The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • Ye.S. Tsvetkov «Energy of Ukraine» Ltd, Kyiv
Keywords: metallurgical ladles, drying, heating, natural gas, waste gases, uniformity of heating, intensification of heating, saving of natural gas, specific consumption, saving, harmful substance

Abstract

The article shows the results of successful modernization of heating systems for cast iron and steel still-pouring ladles of blast furnace and open-hearth production. It was implemented by Ukraine Energy Ltd. with participation of the Institute of Gas of the National Academy of Science of Ukraine. The main aim was reducing of natural gas consumption and emissions. The modernization has been completed using high-speed burners of various designs and changing heating systems to low-calorie gas. Changing of the heating system of pig-iron ladles of 100 tons from natural gas to the mixture of waste gases with natural gas has allowed to reduced the consumption of natural gas more than twofold. The use of the MSB-80 high-speed burner for drying the lining of 100 tons of iron ladles has made it possible to intensify the drying process and reduce the process time twofold as well. Natural gas saving is more than 35 %. The use of precision heating technology with GNB-1500 high-speed burners for the modernization of heating systems for steel casting 250 tons of ladles enables to increase the uniformity of heating the lining to ± 5 degrees, reduce the specific consumption of natural gas from 37 m3/t to 29.7 m3/t, and reduce the content of harmful substances in combustion products: CO ≤ 29 ppm, NOx ≤ 53 ppm. On example of changing natural gas in the heating system of cast-iron ladles with waste gases and using high-speed burners for burning natural gas is shown a real possibility to significantly reduce the consumption of natural gas, improve the quality of drying, reduce the time of processes and emissions. Bibl. 6, Fig. 9, Tab. 3.

Author Biographies

R.A. Pylypenko, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Technical Sciences

R.V. Melnikov, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

PhD Student

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Published
2020-06-20
How to Cite
Pylypenko, R., Melnikov, R., & Tsvetkov, Y. (2020). NATURAL GAS SAVING IN THE PROCESSES OF DRYING AND HEATING OF METALLURGICAL LADLES. Energy Technologies & Resource Saving, (2), 27-35. https://doi.org/10.33070/etars.2.2020.04
Section
Energy saving technologies