Sleeve type photobiological reaction system for culturing microalgae on scale by utilizing waste gas and waste heat

Abstract

The invention discloses a sleeve type photobiological reaction system for culturing microalgae on a scale by utilizing waste gas and waste heat. The sleeve type photobiological reaction system comprises a liquid supplying system, a gas supplying system, a temperature control system and a data collecting and control system; the liquid supplying system mainly comprises a liquid storage tank and a culture reactor; the culture reactor is formed by connecting sleeve type photobiological reactors of built-in aeration pipes of a plurality of units in series or in parallel; the gas supplying system mainly comprises a tail gas residual heat recovering apparatus and a gas mixing chamber; the temperature control system comprises a temperature control pool and a circulating watercourse; and the data collecting and control system is used for controlling process conditions for culturing the microalgae. By using the sleeve type photobiological reaction system, the growing environment of the microalgae can be effectively controlled; the gas-liquid mixing in microalgae liquid can be enhanced; the pH is effectively regulated; CO2 is supplemented in time; dissolved oxygen (DO) is removed in time; and the sleeve type photobiological reaction system is suitable for large-scale culture. The industrial waste heat and the waste gas are used for providing a carbon source and a heat source for the culture of the microalgae; a temperature can be efficiently controlled; energy resources are saved; tail gas is treated; the carbon emission is reduced; and the sleeve type photobiological reaction system can be used for efficiently culturing the microalgae and producing biodiesel, a microalgae protein, an aquiculture bait and the like.

Description

technical field [0001] The invention relates to a microalgae cultivation system, in particular to a sleeve-type photobiological reaction system for cultivating microalgae on a large scale using waste waste heat. Background technique [0002] Compared with other plants, microalgae have higher growth efficiency, faster growth cycle and CO 2 Fixed capacity can provide energy and additional products of the system, so the development of microalgae energy at this stage has become a direction to solve energy problems. Microalgae cultivation is an important link in the development of microalgae energy, so the development of new high-density, low-cost and high-efficiency microalgae cultivation systems suitable for large-scale cultivation has become the key to microalgae biodiesel technology. The systems for large-scale cultivation of microalgae are divided into open and closed systems. Due to the advantages of sterile conditions, controllable culture parameters, and easy high-densit...

AI Technical Summary

Problems solved by technology

However, the presence of CO in traditional tubular photobioreactors 2 Untimely replenishment, poor gas-liquid mixing effect, easy accumulation of dissolved oxygen (DO), and low light efficiency caused by expanding the tube diameter. These shortcomings restrict the further expansion of the tubular photobioreaction system to a certain extent, such as: Even if an airlift device is added at both ends of the pipe section to supplement CO 2 and exclude dissolved oxygen (DO), the length of a single pipe section should not be too long (not more than 80m), which hinders further large-scale cultivation, and this airlift photobiological reaction system can only reflect and regulate the airlift storage tank The pH, temperature, and dissolved oxygen (DO) concentration of the algae liquid in the medium cannot effectively control the growth environment of the microalgae in the entire tube.

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