Increase of the reactivity of a low-active part of lime slurry in soda production

Authors

  • Мусій Абрамович Цейтлін National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0002-2452-7814
  • Олексій Валерійович Шестопалов National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0001-6268-8638
  • Валентина Федорівна Райко National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002, Ukraine https://orcid.org/0000-0002-5527-1874

DOI:

https://doi.org/10.15587/1729-4061.2015.55921

Keywords:

soda production, ammonia regeneration, low-active lime, vapor-liquid injector, mixer reactor, recycling

Abstract

The study focuses on the reactivity of low-active parts of lime in the solid phase of lime slurry in soda production. It is determined that low-active lime, that is compounds of calcium with oxides of aluminum, iron, silicon and magnesium, is concentrated in fractions with particles over 60 microns in size. It is found that the maximum rate of decomposition of the low-active components of lime is achieved with the increase of its residence time in the reactor to 40-50 minutes at low pH––8-8.5.

It is shown that the reactivity of lime milk increases at its dispersion in a vapor-liquid injector due to the cavitational effect. Favorable conditions for the use of low-active parts of lime are possible in recycling the solid unreacted phase in a mixer reactor through a vapor-liquid injector. It is determined that accumulation of the solid recirculating phase in the reactor promotes the removal of supersaturation of the sulfate ion that crystallizes on the surface of the slurry solid particles.

The suggested solutions allow both maximizing the use of low-active lime and reducing the reactor operation time to 10 minutes.

Author Biographies

Мусій Абрамович Цейтлін, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Doctor of engineering sciences, professor

Department of chemical technique and industrial ecology

Олексій Валерійович Шестопалов, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Candidate of engineering sciences, associate professor

Department of chemical technique and industrial ecology

Валентина Федорівна Райко, National technical university «Kharkov polytechnic institute» 21, street of Frunze, Kharkov, Ukraine, 61002

Candidate of engineering sciences, professor

Department of chemical technique and industrial ecology

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Published

2015-12-22

How to Cite

Цейтлін, М. А., Шестопалов, О. В., & Райко, В. Ф. (2015). Increase of the reactivity of a low-active part of lime slurry in soda production. Eastern-European Journal of Enterprise Technologies, 6(6(78), 33–39. https://doi.org/10.15587/1729-4061.2015.55921

Issue

Vol. 6 No. 6(78) (2015): Technology organic and inorganic substances. Ecology

Section

Technology organic and inorganic substances

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Copyright (c) 2015 Валентина Федорівна Райко, Олексій Валерійович Шестопалов, Мусій Абрамович Цейтлін

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