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Method for preparing biologic diesel oil by using halophytic vegetation as raw material

A technology for halophyte and biodiesel, which is applied in the preparation of biological raw materials, liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of high price and high cost, achieve low production costs, reduce operating costs, and meet energy needs. Effect

Inactive Publication Date: 2007-01-03
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, purified or semi-purified vegetable oil costs a lot, and the price of vegetable oil is higher than that of refined biodiesel products

Method used

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  • Method for preparing biologic diesel oil by using halophytic vegetation as raw material

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Embodiment 1

[0037] Embodiment 1. Take 500g of Suaeda salsa seeds, add them to the reactor after processing, and add 300g of methanol, at room temperature, continue to stir vigorously until the material forms a suspension with uniform flow. 60g of catalyst (46.8% boron trifluoride / methanol) was added to the mixture and reacted at 65°C for 2h under slow stirring and reflux. The reaction mass was cooled to 40° C. and filtered to obtain 400 g of solid phase and 460 g of filtrate. The filtrate was distilled at atmospheric pressure, and 320g of crude methanol condensate was recovered. There was 140g of liquid residue in the distiller, which was a mixture of methyl esters, glycerin and other by-products. The residue was left for 2 hours to room temperature (25° C.), separated into two phases, and the lower layer was 14 g of crude glycerol, and the upper layer was 126 g of methyl ester, which could be used as biodiesel fuel after purification. The solid phase was vacuum dried, and 40 g of methan...

Embodiment 2

[0038] Embodiment 2, take 500g salicornia seeds, add into the reactor after processing, 300g methanol, at room temperature, continue to stir vigorously, until the material forms the suspension that flows evenly. 60g of catalyst (46.8% boron trifluoride / methanol) was added to the mixture and reacted at 65°C for 2h under slow stirring and reflux. The reaction mass was cooled to 40° C. and filtered to obtain 350 g of solid phase and 510 g of filtrate. The filtrate was distilled at atmospheric pressure, and 320g of crude methanol condensate was recovered. There was 160g of liquid residue in the distiller, which was a mixture of methyl esters, glycerin and other byproducts. The residue was allowed to stand for 2 hours to room temperature (25° C.), separated into two phases, and the lower layer was 16 g of crude glycerol, and the upper layer was 144 g of methyl ester, which could be used as biodiesel fuel after purification. The solid phase was vacuum dried, and 50 g of methanol an...

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Abstract

A process for preparing the biologic diesel oil from halophyte includes mixing the seeds of halophyte with short-chain alcohol, strong stirring, adding BF3 as catalyst, slow stirring, while esterifying reaction under reflux, cooling, filter, distilling for recovering alcohol, laying the liquid aside for phase separation to obtain lower layer of coarse glycerine and upper layer of methylester of fatty acid and ethylester of fatty acid, vacuum distilling of said upper layer, and purifying.

Description

technical field [0001] The invention relates to the improvement of diesel engine fuel or fuel components, specifically a method for preparing biodiesel from halophytes, which belongs to the technical field of bioenergy. Background technique [0002] In the prior art, there is a patent ZL98811443.7 which discloses a method and equipment for preparing fatty acid methyl ester biodiesel using animal and vegetable oil alkali catalysis; and a patent GK1556174 which discloses a method for producing biodiesel fatty acid methyl ester from waste animal and vegetable oil with high acid value. Using high-acid value animal and vegetable oils as raw materials, esterification with glycerin in the presence of a strong acid catalyst, and then strong base catalyzed methyl esterification; the alkali-catalyzed oil alcoholysis process requires the esters of the used oils to be as low as possible (below 0.5), otherwise it is easy to generate soap and reduce the yield of esters during washing. For...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 石红旗缪锦来李光友
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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