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Preheating of manure utilizing heat exchanger and flue gas. Forvarmning af gylle ved varmeveksling med roeggas

Abstract

It has been shown that preheating of manures in biomass conversion plants to a temperature of 50-60 deg. C, before the anaerobic digestion takes place at a temperature of 35-45 deg. C, results in an increase of methane production. But the method normally involves an increase in energy consumption. The aim of the project was to develope methods of utilizing heat from flue gas emitted from the boiler connected to the plant, with the help of a heat exchanger. The heat thus recovered would be used to preheat the manure. The chosen method was to inject the flue gas directly into the manure mass, following this up with heat exchanging and condensing. In order to mix the flue gas thoroughly into the manure an ejector was used, this was driven by the manure flow. Results were satisfactory. (AB).
Authors:
Publication Date:
Jul 15, 1987
Product Type:
Technical Report
Report Number:
NEI-DK-252
Reference Number:
DK-90-001022; EDB-90-032164; NTS-90-010436; ERA-15-016239
Subject:
09 BIOMASS FUELS; BIOMASS CONVERSION PLANTS; ENERGY RECOVERY; ANAEROBIC DIGESTION; HEAT EXCHANGERS; MANURES; METHANE; AGRICULTURAL WASTES; ALKANES; BIOCONVERSION; DIGESTION; HYDROCARBONS; MANAGEMENT; ORGANIC COMPOUNDS; ORGANIC WASTES; PROCESSING; RECOVERY; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 090900* - Biomass Fuels- Processing- (1990-)
OSTI ID:
7787655
Research Organizations:
Hoejbogaard Biogasanlaeg Noerre Aaby A/S, Noerre Aaby (Denmark)
Country of Origin:
Denmark
Language:
Danish
Other Identifying Numbers:
Other: ON: DE90748434; CNN: TR-86.464
Availability:
NTIS (US Sales Only), PC A03/MF A01
Submitting Site:
DK
Size:
Pages: 33 p
Announcement Date:
Mar 09, 2013

Citation Formats

Weber, J. Preheating of manure utilizing heat exchanger and flue gas. Forvarmning af gylle ved varmeveksling med roeggas. Denmark: N. p., 1987. Web.
Weber, J. Preheating of manure utilizing heat exchanger and flue gas. Forvarmning af gylle ved varmeveksling med roeggas. Denmark.
Weber, J. 1987. "Preheating of manure utilizing heat exchanger and flue gas. Forvarmning af gylle ved varmeveksling med roeggas." Denmark.
@misc{etde_7787655,
title = {Preheating of manure utilizing heat exchanger and flue gas. Forvarmning af gylle ved varmeveksling med roeggas}
author = {Weber, J.}
abstractNote = {It has been shown that preheating of manures in biomass conversion plants to a temperature of 50-60 deg. C, before the anaerobic digestion takes place at a temperature of 35-45 deg. C, results in an increase of methane production. But the method normally involves an increase in energy consumption. The aim of the project was to develope methods of utilizing heat from flue gas emitted from the boiler connected to the plant, with the help of a heat exchanger. The heat thus recovered would be used to preheat the manure. The chosen method was to inject the flue gas directly into the manure mass, following this up with heat exchanging and condensing. In order to mix the flue gas thoroughly into the manure an ejector was used, this was driven by the manure flow. Results were satisfactory. (AB).}
place = {Denmark}
year = {1987}
month = {Jul}
}