Preparation technology of biodiesel produced from non refined grease

A biodiesel and preparation process technology, which is applied in the petroleum industry, biofuels, fatty acid esterification, etc., can solve the problems of low utilization rate of raw materials, poor quality, and unstable process, and achieve good quality and no waste of raw materials. , energy and resource saving effect

Inactive Publication Date: 2013-12-04
SHAANXI DERONG NEW ENERGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there are still many problems in the process of producing national standard biodiesel with unrefined oil as raw material, such as the process is not stable enough, the quality is poor, and the utilization rate of raw materials is not high.

Method used

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  • Preparation technology of biodiesel produced from non refined grease

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Embodiment

[0035] see figure 1 , the present invention uses non-refined oil as raw material through pre-esterification, transesterification and deep deacidification to produce the national standard biodiesel preparation method, that is, the preparation process of non-refined oil to produce biodiesel, which can reduce the non-refined oil according to the specific production cost And the purpose requires the production of non-standard product A, non-standard product B and biodiesel products that strictly comply with the national standard GB / T 20828-2007. The non-refined oil is put into storage, heated or naturally settled in the oil storage tank or tank, and enters the reaction Sludge, sewage, residue, etc. are fully removed before the kettle, and these impurities are mixed into coal as fuel for the production line to use heat. Its operating process is as follows:

[0036] The oil that has been removed from the impurities is introduced into the reactor, the stirring and self-circulation a...

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PUM

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Abstract

The invention discloses a preparation technology of biodiesel produced from non refined grease. The preparation technology comprises the following steps: 1) selecting and using qualified methanol and a catalyst A; 2) adding the catalyst A into the grease, adding excess methanol for a pre-esterification reaction, performing rectification regeneration of gas phase methanol; 3) dissolving an appropriate proportion of a catalyst B in the methanol; 4) performing an ester interchange reaction; 5) performing water washing and liquid separation to remove the catalyst B and glycerin produced by the ester interchange, rectifying and recycling the superfluous methanol to obtain a non-standard product A; 6) obtaining a non-standard product B and tower-bottom heavy oil through vacuum distillation of the non-standard product A; and 7) obtaining a biodiesel product meeting national standard GB/T 20828-2007 by deep deacidification, water washing and dehydration of the non-standard product B. The preparation technology has stable technological processes, and can fully realize recycling of the excess methanol, reuse of soft water and saving of energy and resources. The by-product crude glycerin can be in good abutting joint with a glycerin refining production line, and the by-product tower-bottom heavy oil and waste oil produced by deacidification and the like can be fully recycled, and are of good quality.

Description

technical field [0001] The invention relates to a biodiesel process, in particular to a preparation process for producing national standard biodiesel by using non-refined oil. Background technique [0002] Biodiesel is a fatty acid monoalkyl ester obtained by transesterification of animal and vegetable oils and alcohols (such as methanol or ethanol). The most typical fatty acid methyl ester is represented by BD100, and the national standard GB / T 20828-2007 is implemented. Biodiesel blended fuel (B5) implements the national standard GB / T 25199-2010. Biodiesel is an excellent supplement and substitute for petrochemical diesel. [0003] During the development of biodiesel, there were production methods such as direct mixing method, microemulsion method, pyrolysis method and transesterification method. The direct mixing and microemulsification methods are mixing animal and vegetable oils into petrochemical diesel oil without changing the chemical composition of the oils. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02C11C3/04C11C3/10
CPCY02E50/13Y02E50/10
Inventor 姚东阳陈涛高静
Owner SHAANXI DERONG NEW ENERGY
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