Method for preparing algae material fuel by catalytic liquefying method

A technology for catalytic liquefaction and seaweed, which is applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of cumbersome separation process of reaction products, difficulty in direct use of fuel, and low calorific value of bio-oil, and achieve economic and social benefits. Obviously, to avoid equipment corrosion, the effect of high content

Active Publication Date: 2013-03-27
QINGDAO UNIV
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Problems solved by technology

[0002] At present, with the depletion of petrochemical energy and the intensification of the greenhouse effect, people are paying more and more attention to seeking alternative energy sources. Biomass, as a widely renewable clean energy source, has attracted more and more attention. Compared with seaweed, seaweed has the advantages of high photosynthetic efficiency, short growth cycle, and does not occupy land. Therefore, the development of biofuels based on seaweed has attracted increasing attention. At present, the thermochemical methods for preparing liquid fuels from seaweed are mainly hydrothermal liquefaction an

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  • Method for preparing algae material fuel by catalytic liquefying method

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Example Embodiment

[0014] Example 1:

[0015] In this example, the large seaweed Prolifera was first washed and removed from impurities, and 28 g of dried and pulverized prolifera were taken, 5.6 g of water was added, and 1.4 g of Fe / HZSM-5 catalyst was added. The heating rate of 60°C / min was heated to 350°C, kept for 15 minutes, the reaction was terminated, and the reaction was naturally cooled in the air. Then, the solid-liquid product was subjected to atmospheric distillation, and the fractions between 60 and 500°C were collected. After separating the water in the fractions The liquid fuel oil was obtained with a yield of 18.39%, a calorific value of 44.69 MJ / kg, a H / C molar ratio of 1.82, and an oxygen content of 3.12%; figure 1 For the GC-MS total ion current chromatogram of the obtained liquid fuel, through mass spectral peak analysis, the main components of the obtained liquid fuel hydrocarbons include toluene, ethylbenzene, trimethylbenzene, propylbenzene, 1-vinyl- 2-methylbenzene, dode...

Example Embodiment

[0016] Example 2:

[0017] In this example, the large seaweed Prolifera was washed and removed from impurities, and 28 g of dried and pulverized prolifera were taken, 4.2 g of water was added, 0.84 g of Fe / HZSM-5 catalyst was added, and the mixture was uniformly placed into a steel airtight reaction kettle. The heating rate of 60°C / min was heated to 400°C, kept for 20min, the reaction was terminated, cooled in air naturally, and then the solid-liquid product was subjected to atmospheric distillation, the fraction between 60-500°C was collected, and the water in the fraction was separated. Liquid fuel oil was obtained with a yield of 17.81%, a calorific value of 42.89 MJ / kg, a H / C molar ratio of 1.64 and an oxygen content of 4.06%.

Example Embodiment

[0018] Example 3:

[0019] In this example, the large seaweed prolifera was first washed and removed from impurities, 28 g of dried and crushed prolifera were taken, 8.4 g of water was added, 1.68 g of Fe / HZSM-5 catalyst was added, and the mixture was uniformly placed into a steel airtight reaction kettle. The heating rate of 60°C / min was heated to 450°C, kept for 20min, the reaction was terminated, and cooled naturally in the air, and then the solid-liquid product was subjected to atmospheric distillation, the fraction between 60-500°C was collected, and the water in the fraction was separated. Liquid fuel oil was obtained with a yield of 19.27%, a calorific value of 43.25 MJ / kg, a H / C molar ratio of 1.71, and an oxygen content of 4.10%.

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Abstract

The invention belongs to the technical field of comprehensive utilization of algae, relates to a method for preparing high-quality fuel by using the algae material through a catalytic liquefying method, and particularly relates to a method for preparing the fuel by using a metal-modified molecular sieve catalyst to catalyze and liquefy the algae material. The method comprises the following steps of: crushing and sieving cleaned and dried algae, mixing the algae material with the metal-modified molecular sieve catalyst and water, then obtaining a mixture, putting the mixture into a reaction kettle, heating the reaction kettle, reacting under the oxygen-free condition, naturally cooling the mixture after the reaction of the mixture is finished, then carrying out normal-pressure distilling treatment on a solid-liquid product, collecting fractions at the temperature of 60-500 DEG C, separating water in the fractions and obtaining combustible fuel. The method has the advantages that the catalytic effect and the deoxygenating effect are ideal, the fuel yield is high, the oxygen content is low, the corrosion of the basic catalyst to equipment is avoided, the preparation process is simple, the principle is reliable, the materials are easily obtained, the quality of a product is good, the economic benefit and the social effect are obvious and the environmentally-friendly effect is good.

Description

Technical field: [0001] The invention belongs to the technical field of comprehensive utilization of seaweed, and relates to a method for preparing high-quality fuel oil by using seaweed raw materials through a catalytic liquefaction method, in particular to a method for preparing fuel oil by catalytically liquefying seaweed raw materials with a metal-modified molecular sieve catalyst. Background technique: [0002] At present, with the depletion of petrochemical energy and the intensification of the greenhouse effect, people are paying more and more attention to seeking alternative energy sources. Biomass, as a widely renewable clean energy source, has attracted more and more attention. Compared with seaweed, seaweed has the advantages of high photosynthetic efficiency, short growth cycle, and does not occupy land. Therefore, the development of biofuels based on seaweed has attracted increasing attention. At present, the thermochemical methods for preparing liquid fuels from...

Claims

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Application Information

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IPC IPC(8): C10G1/00
Inventor 李金花王国明王宗花高翠丽
Owner QINGDAO UNIV
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