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System and process for microalgae cultivation by means of chemical-looping combustion CO2 and ash

A technology of chemical chain combustion and CO2, applied in biochemical equipment and methods, combustion equipment, solid fuel combustion, etc., can solve the problems of complex flue gas treatment process, high cost, environmental damage, etc. Speed ​​and quality, the effect of promoting cultivation

Active Publication Date: 2016-05-25
JIANGSU UNIV
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Problems solved by technology

In addition, the flue gas produced by combustion causes serious damage to the environment, and the treatment process for the flue gas is very complicated and the cost is high. Among them, CO 2 The impact of emissions on the greenhouse effect and other environmental pollution issues, making it an urgent problem to be solved

Method used

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  • System and process for microalgae cultivation by means of chemical-looping combustion CO2 and ash
  • System and process for microalgae cultivation by means of chemical-looping combustion CO2 and ash

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Embodiment

[0032] A method for burning CO using chemical looping 2 As well as the process and system for cultivating microalgae with ash, in the chemical looping combustion device, the combustion reactor adopts a fast fluidized bed, the air reactor adopts a bubbling fluidized bed, and the oxygen carrier is Fe 2 o 3 / Fe 3 O4, the cyclone separator separates the oxygen carrier, flue gas and ash, the oxygen carrier enters the air reactor, and after the reaction occurs, it is sent back to the combustion reactor by overflow. The separated flue gas and ash enter the dust collector to collect the separated combustion ash; the flue gas enters the heat exchanger to provide heat to the external device, and then enters the gas-liquid separator to collect the separated products separately.

[0033] The combustion reactor temperature is stable at 800°C, and the air reactor is stable at 700°C. The ash produced by coke combustion contains alkali metals, and the ash separated and collected by the dus...

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Abstract

The invention belongs to the field of energy utilization, and relates to a system and process for microalgae cultivation by means of chemical-looping combustion CO2 and ash. In the chemical-looping combustion process, high-temperature vapor serves as fluidization carrier gas and a gasification agent of fuel, Fe2O3 is taken as an oxygen carrier, and combustion products are mainly H2O and CO2 and are collected separately; a microalgae cultivation device is a surrounding type tubular cultivation container and simulates the natural growth environment, CO2 is introduced into the container to enhance the photosynthesis of microalgae, and then the growth rate of microalgae is increased; alkali metal in ash generated through chemical-looping combustion is used for preparing a microalgae cultivation solution. The chemical-looping combustion process and microalgae cultivation are tightly combined, two-stage reaction of chemical-looping is fully utilized to generate high-concentration CO2 to be used for promoting microalgae cultivation, and ash generated from combustion is utilized to prepare the microalgae cultivation solution; microalgae cultivation rate and quality are improved, cultivation cost is reduced, and comprehensive utilization of a chemical-looping combustion device and chemical-looping combustion products is achieved.

Description

technical field [0001] The invention belongs to the field of energy utilization, and relates to the cultivation of microalgae and the process of chemical chain combustion, in particular to the reduction of chemical chain CO by microalgae cultivation. 2 and utilization of ash. Background technique [0002] At present, the common combustion process is to directly contact the fuel with the air for combustion reaction. The impact of the ash produced by combustion on the operation of the combustion reactor, and the pollution of the exhaust gas to the environment are important issues. In addition, the flue gas produced by combustion causes serious damage to the environment, and the treatment process for the flue gas is very complicated and the cost is high. Among them, CO 2 The impact of emissions on the greenhouse effect and other environmental pollution issues makes it an urgent problem to be solved. [0003] The growth environment of microalgae is widely distributed in land a...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12M1/04F23B90/00C12R1/89
CPCC12M21/02C12M29/00C12M31/00C12M31/02C12M43/04
Inventor 王爽孙超群吴元元王谦何志霞胡亚敏
Owner JIANGSU UNIV
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