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Method for preparing liquid fuel by hydrothermal liquification of hyacinth

A technology for hydrothermal liquefaction and liquid fuel, which is applied in the fields of environmental protection and new energy, and can solve problems such as methods that do not involve liquefaction treatment of water hyacinth, consume a lot of manpower and material resources, and destroy ecological balance.

Inactive Publication Date: 2010-02-17
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of prevention and control, the use of chemical agents and natural enemies can play a certain role, but because the prevention and control needs to consume a lot of manpower and material resources and even destroy the ecological balance, so the current research on resource utilization of water hyacinth is relatively dominant. Water hyacinth contains animal and plant The nutrients needed for growth can be used as feed and fertilizer. The patent application for invention with the publication number CN1923760A introduces a method for producing bioactive fertilizer from water hyacinth fermented residue; the enrichment effect of water hyacinth on many elements in the water body can make It is applied to water body restoration; water hyacinth residues can also be used as raw materials for incineration and biogas treatment. The invention patent with application number 200810056819.4 introduces a method for incineration treatment of water hyacinth, and the invention patent application with publication number CN1740328A also A method and device for producing biogas from water hyacinth residues are proposed
However, the above processing methods do not relate to the method of liquefying the water hyacinth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Using water hyacinth as raw material, after simple shearing and grinding of water hyacinth leaves and stems, take 40g of treated water hyacinth and pour it into a 250ml high-pressure reaction kettle, add 120ml of distilled water, stir to make a slurry, and fill the reaction kettle Into 2MPa N 2 , heated to 300°C while stirring, kept for 10min, passed tap water to cool to room temperature, poured out the reaction mixture, and washed with CH 2 Cl 2 Clean the still cavity; use the still cavity cleaning solution and 150ml CH 2 Cl 2 The mixture was extracted and stripped, the extract was separated and the CH was filtered with a Buchner funnel 2 Cl 2 phase, and then recover CH by vacuum distillation 2 Cl 2 That is, bio-oil.

Embodiment 2

[0014] Using water hyacinth as raw material, after simple shearing and grinding of water hyacinth leaves and stems, take 20g of treated water hyacinth and pour it into a 250ml high-pressure reaction kettle, add 100ml of distilled water, stir to make a slurry, and fill the reaction kettle Into 3MPa H 2 , heated to 300°C while stirring, kept for 30min, passed tap water to cool to room temperature, poured out the reaction mixture, and washed with CHCl 3 Clean the still cavity; use the still cavity cleaning solution and 150ml CHCl 3 The mixture was extracted and stripped, the extract was separated and the CHCl was filtered using a Buchner funnel 3 Phase, then vacuum distillation recovery CHCl 3 That is, bio-oil.

Embodiment 3

[0016] Using water hyacinth as raw material, after simple shearing and grinding of water hyacinth leaves and stems, take 40g of treated water hyacinth and pour it into a 250ml high-pressure reaction kettle, add 100ml of distilled water, stir to make a slurry, and heat up while stirring to 250°C, keep it for 60min, pass tap water to cool to room temperature, pour out the reaction mixture, and wash the still cavity with acetone; extract and extract the mixture with the still cavity cleaning liquid and 150ml acetone, separate the extraction extract, and use Brookner Filter the acetone phase with a funnel, and then distill under reduced pressure to recover the acetone to obtain bio-oil.

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Abstract

The invention belongs to the technical fields of environmental protection and new energy, in particular to a method for preparing liquid fuel by hydrothermal liquification of hyacinth. The method comprises the following steps: firstly, carrying out simple treatments such as crushing and the like on the hyacinth, directly pouring the treated hyacinth into an autoclave to form slurry with a certainsolid-to-liquid ratio, charging inert gases or reducible gases with a certain pressure into the autoclave, stirring, and raising the temperature to 180-450 DEG C, keeping the temperature for 1-120 minutes, quickly cooling to the room temperature, collecting a reaction mixture, leaching and extracting the mixture with organic solvent, separating the mixture, filtering an organic phase and removingthe organic solvent to obtain biological oil. The method takes the hyacinth as a raw material and can carry out liquefied treatment on the hyacinth after large-scale artificial culture without dryingtreatment, thus the method can be used as a way for obtaining environment-friendly renewable energy resources and reduce the environment problem brought by large amount of proliferation of the hyacinth while utilizing hyacinth residual body in a resource mode.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and new energy, and in particular relates to a method for preparing liquid fuel by hydrothermally liquefying water hyacinth. Background technique [0002] Water hyacinth, also known as water pond narcissus, water hyacinth, belongs to the hyacinthaceae, water hyacinth, is a perennial plant, native to South America. Because of its strong environmental adaptability and fast reproduction speed, water hyacinth can easily cause problems such as river blockage and water pollution, and has become the most harmful aquatic weed in the world. After water hyacinth was introduced into my country in the 1930s, it has been widely distributed in South China, Central China and East China, especially in Yunnan, Sichuan, Hunan, Hubei and other provinces, which has brought great harm to local waters. Therefore, water hyacinth The processing and application of it has attracted people's attention. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10C10L1/02
Inventor 张士成张良周东陈建民
Owner FUDAN UNIV
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