Microalga-based biomass refining method and system for implementing microalga-based biomass refining method
A biomass and microalgae technology, applied in biofuels, coke ovens, waste fuels, etc., can solve the problems of uneconomical liquid fuels, efficient utilization of algae residues that need to be treated urgently, and high cost of microalgae raw materials
Pending Publication Date: 2019-03-22
石首市博锐德生物科技有限公司
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Problems solved by technology
The process of producing oil products from microalgae is mainly based on the transesterification of oil in microalgae to produce biodiesel, and the efficient utilization of the remaining algae residue needs to be dealt with urgently
At the same time, the current cost of microalgae raw materials is high, and it is not economical to prepare liquid fuels
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[0026] Refer below Figure 1-Figure 3 A microalgae-based biomass refining method according to an embodiment of the present invention is described.
[0027] Such as figure 1 with figure 2 As shown, the microalgae-based biomass refining method according to the embodiment of the present invention may include the following steps: S1. Pretreating the microalgae to obtain dry algae powder. Wherein, the pretreatment includes: culturing the microalgae in the culture tank 11, and drying the microalgae in the culture tank 11 to obtain dry algae powder. The cultivation pool 11 includes an algae inlet, a waste water inlet and a microalgae outlet, the dryer 12 includes a microalgae inlet and an algae powder outlet, and the microalgae outlet is connected to the microalgae inlet of the dryer 12 . Through the above pretreatment, the microalgae can be processed into dry algae powder, which can facilitate the subsequent extraction and pyrolysis steps.
[0028] Among them, the moisture cont...
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The invention discloses a microalga-based biomass refining method and a system for implementing the microalga-based biomass refining method. The method comprises the following steps: S1, pretreating microalgae to obtain dry alga powder; S2, extracting the dry alga powder to obtain alga oil and alga residues; S3, performing transesterification reaction on the alga oil to obtain biodiesel, and performing pyrolysis on the alga residues to obtain biochar and pyrolysis oil and gas; S4, performing condensation separation on the pyrolysis oil and gas to obtain pyrolysis gas, pyrolysis wastewater andpyrolysis oil; S5, performing hydrogenation treatment on the pyrolysis oil to obtain refined oil; and S6, performing fractionation treatment on the refined oil to obtain diesel, gasoline and kerosene.Therefore, the refining method realizes co-production of biodiesel, bio-based gasoline, diesel and kerosene by means of a whole set of steps of extraction, transesterification, pyrolysis, hydrogenation and fractionation, and simultaneously realizes co-production of coke and pyrolysis gas, thereby realizing cascade utilization of components of microalgae and improving the economy of the microalga-based biomass refining method by means of co-production.
Description
technical field [0001] The invention relates to the technical field of microalgae treatment, in particular to a microalgae-based biomass refining method and a system for implementing it. Background technique [0002] With the deterioration of the global warming effect and the increasing shortage of fossil energy, the research on bio-based liquid fuels has received more and more attention. As a third-generation biofuel raw material, microalgae biomass has a fast growth cycle, CO 2 It has the characteristics of high fixation efficiency, photosynthetic efficiency significantly higher than that of terrestrial plants, and high oil content. However, biomass itself has low energy density and is incompatible with the existing liquid fuel transportation and utilization system. Therefore, converting solid microalgae biomass into liquid fuel is one of the necessary ways to utilize it. The process of producing oil from microalgae is mainly based on the transesterification of oil in m...
Claims
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IPC IPC(8): C10L1/02C11B1/04C11B1/10C10B53/02C10G69/02
CPCC10B53/02C10G69/02C10L1/02C11B1/04C11B1/10Y02E50/30Y02E50/10
Inventor 胡国卿李相宏
Owner 石首市博锐德生物科技有限公司