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Method for preparing fuel oil gas by using dunaliella powder

The technology of Dunaliella algae powder and Dunaliella algae is applied in the field of fuel oil and gas, which can solve the problems of low fuel oil and gas yield, complicated technological process, high content of cellulose and starch, and achieve the effect of improving the yield

Inactive Publication Date: 2008-06-18
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of this method is complex and the yield is low.
Chinese patent ZL00127502.X discloses a method of catalytically cracking plant stalks to produce combustible gas by using solid alkali as a catalyst. Since these materials are mainly polymer components with high cellulose and starch content, they are produced after cracking. The available fuel oil gas yield is low, and it is easy to produce secondary pollution
There is no report about the background technology in this respect at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: According to the mass ratio of Dunaliella (D.bioculata / Dunaliella binocularis) algae powder and rare earth Y-type molecular sieve to 1:0.1, weigh 1.0g of Dunaliella (D.bioculata / Dunaliella binocularis) algae powder and rare earth Y Type molecular sieve catalyst 0.1g mixed thoroughly. Put it into a tube reactor, the reaction temperature is 430°C, and use N 2 As the fluidization gas, under the pressure of 120kPa, the total yield of fuel oil and gas can reach 79.7%. The specific composition of each fraction is shown in Table 1. Rare earth Y-type molecular sieves can be products produced by Changling Catalyst Factory, γ-Al 2 o 3 Products produced by Tianjin Research Institute of Chemical Industry can be selected.

Embodiment 2

[0018] Example 2: According to the mass ratio of Dunaliella (D.parva) algal powder and rare earth Y-type molecular sieve as 1:0.2, 1.0 g of Dunaliella (D.parva) algal powder and 0.2 g of rare earth Y-type molecular sieve catalyst were weighed and mixed thoroughly. Put it into a tube reactor, the reaction temperature is 450°C, and use N 2 As the fluidization gas, under the pressure of 120kPa, the total yield of fuel oil and gas can reach 85.0%. The specific composition of each fraction is shown in Table 1.

Embodiment 3

[0019] Embodiment 3: according to the mass ratio of Dunaliella (D.peircei) algae powder and catalyst is 1: 0.4, weigh 1.0g Dunaliella (D.peircei) algae powder and catalyst (rare earth Y-type molecular sieve and γ-Al 2 o 3 The mass ratio is 10:1) and 0.4g is mixed thoroughly. Put it into a tube reactor, the reaction temperature is 430°C, and use N 2 As the fluidization gas, under the pressure of 150kPa, the total yield of fuel oil and gas can reach 80.6%. The specific composition of each fraction is shown in Table 1.

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Abstract

A method used for preparing fuel oil gas by Dunaliella algae powder relates to fuel oil gas. The present invention provides a method for preparing the fuel oil gas by the Dunaliella algae powder. The marine cultured Dunaliella after harvesting is dried to be made into algae powder; the algae powder is mixed with a solid acid catalyst uniformly and then is processed for the catalysis pyrolysis transformation reaction inside a fluidized bed reactor by N2 as fluidizing gas to obtain the fuel oil gas. Because the Dunaliella is single cell eukaryotic green algae, which has the characteristics of high photosynthesis efficiency, strong environmental adaptability, short growth period, high biological output, not taking farm land, etc., the Dunaliella can grow by concentrated seawater, sunshine, CO2 and little inorganic salt, which has low cost and can be processed for the pyrogenation without pretreatment after harvesting and drying. The solid acid catalyst is used to pyrolyze the Dunaliella as the fuel oil gas under quite low temperature, which can improve the oil gas yield; the oil gas ratio and the product distribution are changed according to different purposes, which is in favor of fitting for the requirements of the fuel oil gas at multiple aspects and has outstanding effect.

Description

technical field [0001] The invention relates to fuel oil gas, in particular to a method for preparing fuel oil gas by catalytic cracking conversion of Dunaliella (salina). Background technique [0002] Due to the depletion of fossil energy, countries all over the world, especially developed countries, are competing to develop renewable energy. Among them, biomass energy is favored by governments and scientists of various countries due to its advantages of renewable and less pollution. [0003] The energy obtained from biomass pyrolysis is called bioenergy. The fuel oil gas obtained by pyrolysis can be used as a substitute for liquefied gas, gasoline and diesel to realize the renewable utilization of energy. [0004] At present, biomass pyrolysis mainly focuses on conventional plants such as crop straws. Chinese patent ZL01138935.4 discloses a method for producing high-octane gasoline from plant fibers, using plant fibers (such as corn stalks, straws, and reeds, etc.) to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
Inventor 贾立山刘广发陈昱
Owner XIAMEN UNIV
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