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Poly-generation utilization method based on collaborative microwave pyrolysis of seaweeds and aquatic invasive plants

A technology of external invasion and synergistic microwave, which is applied in the preparation of biofuels, liquid hydrocarbon mixtures, and special forms of carbonization, to achieve the effects of reducing oxygen content, saving energy consumption, and improving quality

Active Publication Date: 2015-01-07
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Experimental studies on anaerobic biotransformation of Spartina alterniflora also have preliminary reports (Chen Guangyin et al., Chinese Environmental Science, 2009, 29(8): 861-866. Yang Shiguan et al., 2008, Journal of Agricultural Engineering, 2008, 24(5) : 196-199.) The energy-harvesting viability of aquatic invasive plants has been recognized, but not targeted to maximize conversion based on their characteristics

Method used

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  • Poly-generation utilization method based on collaborative microwave pyrolysis of seaweeds and aquatic invasive plants

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Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the method for cogeneration and utilization of seaweed and invasive aquatic plants in cooperation with microwave pyrolysis provided in this embodiment includes the following steps:

[0032] (1) Select Enteromorpha and Asteroides for synergistic microwave pyrolysis;

[0033](2) After the two raw materials are dried to constant weight, they are pulverized and sieved to collect particles with a length of 8mm, which are respectively fed in two directions by a screw conveyor, and enter the microwave pyrolysis device at a mass ratio of 1:1, and are mixed and stirred at the same time. Increase the temperature to 100°C by adjusting the microwave power to evaporate water for 1 hour;

[0034] (3) After the water evaporation stage is over, stop the mixing and stirring device in the microwave pyrolysis reactor, increase the microwave radiation power, and control the optimal temperature of oil, gas, and charcoal cogeneration at 450-600°C, and the reaction...

Embodiment 2

[0037] Such as figure 1 As shown, the method for cogeneration and utilization of seaweed and invasive aquatic plants in cooperation with microwave pyrolysis provided in this embodiment includes the following steps:

[0038] (1) Select Sargassum and Spartina alterniflora for synergistic microwave pyrolysis;

[0039] (2) After the two raw materials are dried to constant weight, they are pulverized and sieved to collect particles with a length of 5mm, which are fed in two directions by screw conveyors respectively, and enter the microwave pyrolysis device according to the mass ratio of 2:1, and undergo the heat treatment of the two. According to the analysis of pyrolysis and weight test, this ratio can cooperate with pyrolysis to achieve the best three-phase product, and at this time, the energy consumption of microwave is the smallest. At the same time, the mixing and stirring are carried out. By adjusting the microwave power, the temperature is raised to 100°C to evaporate wate...

Embodiment 3

[0043] Such as figure 1 As shown, the method for cogeneration and utilization of seaweed and invasive aquatic plants in cooperation with microwave pyrolysis provided in this embodiment includes the following steps:

[0044] (1) Select asparagus and water hyacinth for synergistic microwave pyrolysis;

[0045] (2) After the two raw materials are dried to constant weight, they are pulverized and sieved to collect particles with a length of 1 mm, which are fed in two directions by screw conveyors respectively, and enter the microwave pyrolysis device according to the mass ratio of 3:1, and are mixed and stirred at the same time. Increase the temperature to 100°C by adjusting the microwave power to evaporate water for 2 hours;

[0046] (3) After the water evaporation stage is over, stop the mixing and stirring device in the microwave pyrolysis reactor, increase the microwave radiation power, and control the optimal temperature of oil, gas, and charcoal cogeneration at 450-600°C, a...

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Abstract

The invention discloses a poly-generation utilization method based on collaborative microwave pyrolysis of seaweeds and aquatic invasive plants. The method comprises the following steps: (1) collecting seaweeds and aquatic invasive plants, drying, cutting or crushing and then sieving; feeding to a microwave pyrolysis device, mixing, stirring and adjusting micro-wave power to evaporate moisture; (2) after the moisture is evaporated, stopping a mixing and stirring device, carrying out microwave high-temperature pyrolysis treatment for 10-20 minutes at 450-600DEG C under the conditions that the microwave irradiation frequency is 2450MHz and the power is 0-750W and continuously adjustable; and (3) cooling mixed oil and gas generated by microwave pyrolysis and then feeding to a separating device, wherein the separating device separates the mixed oil and gas into bio-oil, combustible gas and fly ash, the yield of the bio-oil is 30%-60%; the recovery rate of combustible gas is 10%-20%; the coke yield is 30%-50%, and three-phase poly-generation of the bio-oil, the combustible gas and the fly ash is achieved.

Description

technical field [0001] The invention belongs to the technical field of recovery and utilization of seaweed and invasive aquatic plants, and in particular relates to a method for synergistic microwave pyrolysis polygeneration of seaweed and invasive aquatic plants. Background technique [0002] The shortage of fossil resources and environmental pollution are two major problems facing and must be solved in today's economic and social development. On the one hand, limited fossil resources are becoming increasingly depleted, and oil shortages and rising prices have become one of the important factors restricting the development of the global economy; on the other hand, the use of fossil resources has caused serious environmental pollution and may lead to global warming and disastrous climate Frequent and other series of problems, resulting in hundreds of billions of dollars in losses every year. The above-mentioned crisis has attracted the attention and thinking of people of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10G1/00
CPCC10B53/02C10G1/00C10G2300/1011Y02E50/10
Inventor 徐姗楠王爽刘永
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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