Optimum design method of upflow type anaerobic fermentation biological hydrogen production reactor and application thereof

Abstract

The invention discloses an optimum design method of an upflow type anaerobic fermentation biological hydrogen production reactor and application of the optimum design method, and belongs to the technical field of environmental engineering. The optimum design method is used for studying internal flow regime characteristics of the reactor under different waterpower ascending velocity conditions and influences on the hydrogen production speed of the hydrogen production reactor caused by the internal flow regime characteristics on the basis of a numerical simulation method of a computational fluid mechanics technology. An Euler-Euler gas-liquid-solid three-phase fluid model is used for obtaining detailed flow field information such as a liquid phase velocity field, a solid phase volume fraction and a fermentation gas hydrogen component volume fraction, on the basis, a biochemical reaction kinetic model is coupled to carry out dynamic simulation and prediction on the hydrogen production rate of the reactor, and comprehensive analysis is carried out on different flow regime data obtained through simulation according to influences on the hydrogen production reactor caused by feedback of various flow fields so that the optimal waterpower ascending velocity can be determined. The efficient method is provided for optimal design of the upflow type anaerobic fermentation biological hydrogen production reactor. The optimum design method of the upflow type anaerobic fermentation biological hydrogen production reactor and application of the optimum design method have the advantages that technologies are mature and stable, the effect is visual, the period is short, and the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and relates to an optimal design method of an upflow anaerobic fermentation biological hydrogen production reactor. Background technique [0002] Hydrogen is a clean, efficient and renewable energy carrier and one of the ideal substitutes for fossil fuels. The anaerobic fermentation biological hydrogen production technology based on wastewater organic matter has dual meanings of energy recovery and pollution control. Upflow anaerobic fermentation biological hydrogen production reactor is a complex system that uses anaerobic granular sludge to treat wastewater and convert organic matter in wastewater into hydrogen. Many biochemical reactions occur in the gas, liquid and solid three-phase system. The process is one of the main process types of biohydrogen production at present. The reactor makes the granular sludge layer expand with the help of the high liquid surface hydraulic r...

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Problems solved by technology

[0004] At present, there are few domestic studies on the flow field mechanism of biological hydrogen production reactors based on organic matter in wastewater, which are often carried out based on experience in actual reactor design, and in the process design process, there are often situations where parameter basis is limited or actual data cannot be obtained. , making the reactor design with a certain degree of uncertainty, it is difficult to optimize the selection of parameters

In most cases, the anaerobic biological hydrogen production reactor based on wastewater organic matter relies more on experience than science in terms of process design, operation management and engineering scale-up. However, the results obtained by using some ideal and empirical correlation formulas are very It is difficult to reflect the influence of the actual flow field on the process load response, and it is not allowed in terms of time and economy to actually try and compare various conceptual reactors

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