| Issue |
BIO Web Conf.
Volume 161, 2025
International Scientific and Practical Conference “Agriculture and Food Security: Technology, Innovation, Markets, Human Resources” (FIES 2024)
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|
|---|---|---|
| Article Number | 00038 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/bioconf/202516100038 | |
| Published online | 27 February 2025 | |
Biogas technology of complete mixed fodders with application of absorption heat pump
1 Air Force Academy named after Professor N.E. Zhukovsky and Y.A. Gagarin, Russia, Voronezh, Russia
2 FGBOU VO ‘Voronezh State University of Engineering Technologies’, Voronezh, Russia
* Corresponding author: fln-84@mail.ru
The biogas technology of complete mixed fodders with application of ab-sorption waterammonia heat pump (AWHP) is proposed. Involvement of ABTN in the technology allowed to prepare high- and low-potential energy carriers and provide stability of temperature regimes of the processes of anaerobic digestion of substrates at biogas production, moisture-heat treatment of grain with superheated steam, micronisation of grain flakes, drying and cooling of complete mixed fodder. Moisture extraction from biogas was carried out in a two-section apparatus with alternate operation of sections in the modes of freezing and regeneration. Absorption of carbon dioxide from the initial biogas was carried out by cooled water obtained by means of regenerative heat exchange with intermediate refrigerant, which was used as tosol. In a two-column catalytic desulphurisation reactor continuous desulphurisation of biogas was carried out by adsorption method using iron oxide as adsorbent. Variable mode of work of columns of the catalytic reactor provided continuity of process of chemical binding of hydrogen sulphide with adsorbent and regeneration of adsorbent by blowing with atmospheric air. Functioning of ABTN for generation of alternative energy was carried out from heat recovery of superheated steam supplied from the steam generator to the boilers. Ammonia condensation heat in the condenser of ABTH was effectively used to stabilise anaerobic digestion of substrates when warm water was supplied to the heating jacket of the bioreactor.
© The Authors, published by EDP Sciences, 2025
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