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Simulation method of upflow biological hydrogen production reactor flow field

A technology of biological hydrogen production and simulation method, which is applied in the fields of instruments, special data processing applications, electrical digital data processing, etc., can solve problems such as unfavorable mass transfer and biological fermentation degradation, achieve convenient design and optimization, save time and cost, Avoid blindness effects

Inactive Publication Date: 2010-10-27
HARBIN INST OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of current upflow reactors that are not conducive to mass transfer and bio-fermentation degradation due to the selection of control parameters, the present invention proposes a flow field simulation method for upflow biohydrogen production reactors

Method used

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  • Simulation method of upflow biological hydrogen production reactor flow field
  • Simulation method of upflow biological hydrogen production reactor flow field
  • Simulation method of upflow biological hydrogen production reactor flow field

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specific Embodiment approach 1

[0018] Specific implementation mode one, to combine figure 1 and figure 2 In this embodiment, the method for simulating the flow field of an upflow biohydrogen production reactor is a simulation of an upflow biohydrogen production reactor. The upflow biohydrogen production reactor consists of a reaction zone 1, a water inlet zone 2. The side wall 3, the overflow tank 4, the gas collection area 5 and the three-phase separation area 6 are composed, the side wall 3 is a cylindrical hollow body, the bottom of the side wall 3 is the water inlet area 2, and the water inlet area 2 The bottom is provided with a water inlet, the reaction zone 1 is inside the side wall 3 and is set above the water inlet zone 2, and the three-phase separation zone 6 is set inside the side wall 3 and on the upper part of the side wall 3, above the three-phase separation zone 6 A gas collection area 5 is provided, and the three-phase separation area 6 communicates with the gas collection area 5. An ove...

specific Embodiment approach 2

[0028] Specific implementation mode two, to combine figure 2 Describe this embodiment. This embodiment is a further description of Step 1 in Embodiment 1. In Step 1, the grid unit is a quadrilateral grid unit, and the influent area 2 and the three-phase separation area 6 are dense grids.

[0029] That is, the grids of the water inlet area 2 and the three-phase separation area 6 are denser than those of the reaction area 1 , the overflow tank 4 and the gas collection area 5 .

specific Embodiment approach 3

[0030] Specific implementation mode three, This embodiment is a further description of Step 2 in Embodiment 1. In Step 2, a two-dimensional computational domain Eulerian-Eulerian three-phase fluid model of the upflow biohydrogen production reactor profile is established to obtain the mass conservation equation and momentum Conservation equation, specifically:

[0031] Wastewater is a continuous flow of liquid phase, sludge is a continuous flow of solid phase, and fermentation gas is a continuous flow of gaseous phase; the three-phase continuous flow of gas, liquid, and solid shares the pressure field according to their respective volume fractions; the movement of each phase is determined by its corresponding The momentum conservation equation and mass conservation equation control;

[0032] The mass conservation equations of each phase, that is, the continuity equation, are as follows:

[0033] The mass conservation equation for the liquid phase is: ;

[0034] The mass c...

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Abstract

The invention relates to a simulation method of an upflow biological hydrogen production reactor flow field, and solves the problem of the existing upflow biological hydrogen production reactor that control parameter selection causes a flow state phenomenon which is not beneficial to mass transfer and biological fermentative degradation. The simulation method comprises the following steps: 1, dividing a reactor profile into grid cells; 2, establishing a two-dimensional computed field Euler-Euler three-phase fluid model; 3, establishing a glucose fermentative degradation dynamical model of the profile of the upflow biological hydrogen production reactor; 4, determining a boundary value condition and an initial condition; and 5, solving a coupling model to obtain the flow field data of each grid cell in the profile of the upflow biological hydrogen production reactor. The simulation method is applicable to the design field of the upflow biological hydrogen production reactor.

Description

technical field [0001] The invention relates to a method for simulating the flow field of an upflow biohydrogen production reactor. Background technique [0002] As an alternative clean energy, biohydrogen energy has far-reaching significance for both social and environmental benefits. Then, how to improve the efficiency of biological hydrogen production is the key factor of biological hydrogen production technology. As a new type of biohydrogen production reactor, the upflow reactor is the main carrier of the bioanaerobic fermentation hydrogen production process. At present, more researches are trying to improve the efficiency of hydrogen production from the optimization of hydrogen-producing strains and optimization of mass transfer conditions. There are few studies on the influence of flow field characteristic factors. In the continuous flow hydrogen production experiment of the upflow reactor, it was found that the phenomenon of anaerobic granular sludge flow is serio...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王旭丁杰任南琪郭婉茜
Owner HARBIN INST OF TECH
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