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Production process of high quality biodiesel

A technology of biodiesel and production process, which is applied in the petroleum industry, biofuel, liquid carbon-containing fuel, etc., to achieve the effect of high fatty acid methyl ester content and low metal ion content

Inactive Publication Date: 2016-12-14
上海中器环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sulfur content in biodiesel is different from that in petrochemical diesel, so the desulfurization methods used in petrochemical diesel cannot be simply applied to desulfurization of biodiesel

Method used

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  • Production process of high quality biodiesel
  • Production process of high quality biodiesel
  • Production process of high quality biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The acidified soybean oil is hydrated and degummed to obtain the degummed raw oil, and the refined raw oil with a water content of 0.03% is obtained through the primary microfiltration device and stored in the raw oil storage tank. The microfiltration membrane material is polytetrafluoroethylene with a pore size of 1 μm. The pressure difference is 0.02MPa, and the filtration mode is dead-end filtration.

[0048] Refined raw oil and anhydrous methanol in solid sulfuric acid catalyst SO 4 2- / ZrO 2 Under the action of the alkali catalyst sodium hydroxide, an esterification-transesterification reaction occurs in the reactor. After the reaction is completed, the glycerin-containing wastewater and crude biodiesel are separated, and the crude biodiesel enters the vacuum distillation tower for distillation. The vacuum distillation conditions are: The vacuum pressure is 10Pa, and the fraction at 180~250℃ is cut as biodiesel.

[0049] The above-mentioned biodiesel is then refined by ...

Embodiment 2

[0051] The process conditions are the same as in Example 1, except that the raw material oil is waste oil, the microfiltration membrane material is polyvinylidene fluoride, and the pore size of the microfiltration membrane is 0.5 μm. The properties of the prepared biodiesel are shown in Table 1.

Embodiment 3

[0053] The process conditions are the same as in Example 1, except that the raw oil is waste oil, the microfiltration membrane material is polyethylene, and the pore size of the microfiltration membrane is 5 μm. The properties of the prepared biodiesel are shown in Table 1.

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Abstract

The invention discloses a production process of high quality biodiesel. The process comprises the following technical steps of (1) performing raw material oil pretreatment: performing treatment by a primary micro filtering device after the hydration degumming of raw material oil to obtain refined raw material oil; (2) performing esterification-ester exchange reaction on the refined raw material oil to obtain crude biodiesel; performing pressure reduction distillation on the crude biodiesel to obtain biodiesel, wherein solid acid catalysts are used for catalysis in the esterification reaction; (3) performing refining treatment on the obtained biodiesel to obtain high-quality biodiesel. The production process of the high quality biodiesel has the advantages that the contents of sulfur and other impurities are respectively controlled in the raw material oil pretreatment process, the esterification reaction process and the biodiesel refining process; the sulfur content of the obtained biodiesel is lower than 10mg / kg and can reach 0.5mg / kg to the minimum degree; the content of fatty acid methyl ester is high; the metal ion content is low; meanwhile, the water washing refining is not needed by the crude biodiesel; waste water is not generated; important environment protection significance is realized.

Description

Technical field [0001] The invention belongs to the technical field of biodiesel, and specifically relates to a production process of high-quality biodiesel. Background technique [0002] Biodiesel is a clean and renewable energy. It uses oil crops such as soybeans and rapeseeds, oil palm or pistacia tree fruits, engineering algae and other aquatic plants, animal oils, and kitchen waste oils as raw materials, through esterification and transesterification. Reaction system. Biodiesel is non-toxic, with a degradability of up to 98%, and its degradation rate is twice that of ordinary petrochemical diesel. It has good environmental protection characteristics; its cetane number is high and it has good anti-knock properties; its physical properties are very close to that of petrochemical diesel. Therefore, it is a high-quality petrochemical diesel substitute. [0003] Biodiesel contains many impurities, such as sulfur, metal ions, pigments, and glycerin. The sulfur mainly includes org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/10C10L1/02
CPCC10L1/02C11C3/10Y02E50/10
Inventor 杨建斌张学旺
Owner 上海中器环保科技有限公司
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