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Biodiesel continuous ester interchange technology

A technology of biodiesel and transesterification, which is applied in the fields of biofuel, petroleum industry, and fat production. It can solve the problems of low conversion rate, high energy consumption, and long reaction time, and achieves reduced consumption, continuous separation, and easy tower loading The effect of distillation

Active Publication Date: 2015-05-27
江苏卡特环保科技有限公司
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Problems solved by technology

[0004] At present, most of the domestic biodiesel production process is realized by two-step reaction, and then purified by distillation. Since the transesterification reaction is a heterogeneous reaction, the reaction time is long, the conversion rate is low, and the energy consumption is high.

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  • Biodiesel continuous ester interchange technology

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Embodiment 1

[0026] See figure 1 , the biodiesel continuous transesterification process of the present embodiment comprises the following steps:

[0027] Step 1, methanol and alkali catalyst are mixed in the mixer 1; the mixing temperature is 50°C-60°C; in the step 2, the temperature of the transesterification reaction is 50°C-80°C, and the reaction time is 0.8-1.5 hours ;

[0028] Step 2: Continuously pump the mixed solution of step 1 and the waste oil with low acid value or esterification into the continuous transesterification reactor 2 through the metering pump; the temperature of the transesterification reaction is 50℃~80℃, and the reaction time is 0.8~ 1.5 hours; the continuous transesterification reactor 2 includes a cylinder body, a bracket, a guide tube, a guide tube bracket and a stirring propulsion device; the cylinder body is fixed on the support; the guide tube is fixed on the inner cavity of the cylinder body through the guide tube bracket In the middle, the lower space and...

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Abstract

The invention discloses a biodiesel continuous ester interchange technology, which comprises the following steps: I. mixing methanol with an alkali catalyst in a mixer; II. continuously pumping the mixed solution in the step I and low-acid or esterified waste oil into a continuous ester interchange reactor through a metering pump; III. enabling materials discharged from the continuous ester interchange reactor to continuously flow into a continuous glycerine soap separator, and separating out glycerine soap and methanol-containing crude methyl ester; and IV. enabling the glycerine soap separated in the step III to enter a continuous glycerine separator, separating out glycerin and waste oil, and recycling the waste oil for production; and V. enabling the methanol-containing crude methyl ester separated from the step III to continuously enter a methanol recycler, and enabling the recycled methanol to be used for production, and crude methyl ester to enter a rectifying tower for rectifying, to obtain crude biodiesel. The ester exchange reactivity can achieve more than 95%, the continuous production can be realized,and the conversion rate of fatty acid methyl ester can be up to more than 98%.

Description

technical field [0001] The invention relates to a biodiesel continuous transesterification process. Background technique [0002] Biodiesel refers to a renewable diesel fuel that can replace petrochemical diesel oil, which is made from oil crops, wild oil plants, engineering microalgae and other aquatic vegetable oils, animal oils, and catering waste oils through transesterification processes. Biodiesel is a kind of biomass energy, which is a mono-alkyl ester of long-chain fatty acid obtained from biomass by pyrolysis and other technologies. Biodiesel is a mixture of complex organic components with extremely high oxygen content. These mixtures are mainly organic compounds with large molecular weight, including almost all kinds of oxygen-containing organic compounds, such as ethers, aldehydes, ketones, phenols, organic acids, alcohols, etc. Composite biodiesel is synthesized by using waste animal and vegetable oil, waste engine oil and by-products of oil refineries as raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/10C11B3/00C11B3/12C10L1/02
CPCC10L1/02C11B3/001C11B3/12C11C3/10Y02E50/10
Inventor 杨锦梁肖达明张伟明张秋华
Owner 江苏卡特环保科技有限公司
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