Low-carbon zero-emission circulating hydrogen preparing device

Abstract

The invention provides a low-carbon zero-emission circulating hydrogen preparing device adopting microalgae biomass as fermentation substrate. The device comprises pretreatment equipment, a dark fermentation reactor, solid-liquid separation equipment, a photo fermentation reactor, gas separation equipment and a microalgae growing reactor. According to the device, liquid and gas pollution discharge can be obviously reduced, cyclic utilization and zero emission of carbonic materials can be realized, hydrogen used as clean energy can be prepared, and the hydrogen preparing device is efficient, clean, and environmentally friendly.

Description

technical field [0001] The invention relates to a biochemical reaction device, in particular to a device for producing hydrogen in a low-carbon and zero-emission cycle. Background technique [0002] As a carrier of high energy density (122KJ / g), hydrogen is considered to be one of the main energy sources in the future. Many physicochemical hydrogen production methods, such as steam reforming and water electrolysis, require high temperature (>850 °C) and energy input. In contrast, biohydrogen production using microbial fermentation has unique advantages due to low energy input and mild reaction conditions. [0003] However, in the prior art, hydrogen production rate and high-cost substrates are two bottlenecks in the development and application of biohydrogen production. In particular, the traditional dark fermentation of biomass for hydrogen production has low hydrogen production rate and low energy conversion efficiency, and the fermentation tail liquid contains a larg...

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Problems solved by technology

[0006] In order to solve the low efficiency of hydrogen production in the existing biological hydrogen production process, the fermentation tail liquid contains a large amount of small molecular organic acids and the greenhouse gas CO contained in the tail gas 2 problem, the present invention provides a low-carbon zero-emission cycle hydrogen production device using microalgae biomass as a fermentation substrate, said device comprising:

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