SYSTEM OF TEMPERATURE MODE REGULATION OF ROTARY KILN

  • L. Trotsenko The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • V.S. Pikashov The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
Keywords: rotary kiln, heating system, gas burner, flame length, temperature control

Abstract

New heating system on the basis of the gas burner with adjustable length of the torch with 35 MW capacity and the maximum flow of natural gas to 4000 m3/h was developed and implemented on a rotating kiln of kaolin factory for production of refractories. Air supply is realized by burner of 25–30 % of the total needed for combustion air and supply through the draught of the rest of the air flow, heated in the refrigerator fireclay crumbs to 500–700 °C. The design of the burner provides the ability to control the length of the torch, contributing to the achievement of the required technological conditions of temperature distribution along the length of the furnace. Regulation of the length of flame in the burner is carried out using special gas valve. In the heating system includes also includes protective-ignition device and security system and regulation of temperature in the furnace. To regulate the temperature in the burning zone for the first time in domestic practice of rotary kilns operation in the inner layers of masonry installed sensors with contactless transmission of signal to the control unit via radio, powered by solar batteries. The furnace has a length of 75 m and drum diameter 3,6 m. Temperature in the burning zone is 1450–1500 °Ñ. As a results of industrial tests of new heating system of rotary kiln was reached reduction of natural gas consumption in continuous operation of the furnace up to 30 % at reduction of excess air ratio from 1,1–1,3 up to 1,05–1,1 and depression before vacuum exhauster from 1,2 to 1,5 up to 0,8–1,0 kPa. Bibl. 4, Fig. 4, Table 1.

Author Biographies

L. Trotsenko, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Technical Sciences

V.S. Pikashov, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Technical Sciences

References

Lisienko V.G., Shhelokov Ya.M., Ladygichev M.G. Vrashhajushhiesja pechi : Teplotehnika, upravlenie i jekologija. Mosñow : Teplotehnik, 2004. (Rus.)

Monastyrev A.V., Aleksandrov A.V. Pechi dlja proizvodstva izvesti. Moskow : Metallurgija, 1979, 232 p. (Rus.)

Trocenko L.N., Pikashov V.S., Vinogradova T.V. Sovershenstvovanie sistemy otoplenija vrashhajushhejsja pechi dlja obzhiga ogneupornoj gliny. Trudy XIV Mezhdunarodnoy konferencii «Teplotehnika i jenergetika v metallurgii», Dnepropetrovsk, 4–6 Oct., 2011, Dnepropetrovsk : Nacional’naja metallurgicheskaja akademija Ukrainy, 2011, pp. 168–169. (Rus.)

Pat. 47912 Ukr., MPK8 F 23 D 14/00. Pal’nik dlja spaljuvannja gazu, V.S.P³kashov, L.M.Trocenko, S.V.Cvetkov, O.A.Prus’kij, V.O.Velikodnij. — Publ. 25.02.10, Bul. 4. (Ukr.)

Published
2015-12-20
How to Cite
Trotsenko, L., & Pikashov, V. (2015). SYSTEM OF TEMPERATURE MODE REGULATION OF ROTARY KILN. Energy Technologies & Resource Saving, (5-6), 88-93. Retrieved from https://etars-journal.org/index.php/journal/article/view/175
Section
Equipment and devices