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Device and method for preparing biodiesel through rotary fixed bed fast reaction

A biodiesel and fast-response technology, applied in biofuels, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems of untimely product separation, uneven heat and mass transfer, and low esterification reaction rate, and achieve reaction stirring Good effect, easy to manufacture, saving investment cost

Active Publication Date: 2016-06-29
SHANDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of low esterification reaction rate, long reaction time, uneven heat and mass transfer, untimely product separation, etc., to provide a device and method for preparing biodiesel by rapid reaction in a rotating fixed bed, and to improve the unit output of the equipment , to achieve high-efficiency continuous production of biodiesel

Method used

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  • Device and method for preparing biodiesel through rotary fixed bed fast reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0036] according to figure 1 Connect the components, and select the raw material oil as acidified oil with an acid value of 137.23 mgKOH / g. The acidified oil is pretreated before use, first filtered to remove impurities inside, and then rotary steamed to remove water. Methanol is first passed into a 500mL fixed-bed reactor equipped with a cation exchange resin catalyst, and passes to about 80% of the volume of the reactor. 65 oC Circulating hot water passes through the jacket to heat the reaction, and at the same time turn on the rotating device at a speed of 1000r / min. The acidified oil was passed into the rotating fixed bed reactor at 5.0mL / min. As the reaction proceeds, observe the stratification of the lower cone product in time, and take samples every 10 minutes. Sample at 75 o Rotary steam at C for 15 minutes, then measure the acid value of the product according to GB / T5530-2005 "Determination of Acid Value and Acidity of Animal and Vegetable Oils and Fats", and use...

example 2

[0040] according to figure 1 The components are connected, and the raw oil is selected as waste cooking oil with an acid value of 16.08 mgKOH / g. Waste cooking oil is pretreated before use, first filtered to remove impurities inside, and then rotary steamed to remove water. Methanol is first passed into a 1L fixed-bed reactor equipped with a cation exchange resin catalyst, and passes to about 80% of the volume of the reactor. 65 o C The hot water circulates through the jacket to heat the reaction, and at the same time, the rotating device is turned on at a speed of 3000r / min. Waste cooking oil was passed into the rotating fixed bed reactor at 10.0mL / min. As the reaction proceeds, observe the stratification of the lower cone product in time, and take samples every 10 minutes. Sample at 75 o Rotary steam at C for 15 minutes, then measure the acid value of the product according to GB / T5530-2005 "Determination of Acid Value and Acidity of Animal and Vegetable Oils and Fats", a...

example 3

[0044] according to figure 1 Each part is connected, and the raw material oil is selected as an acid value of 36.10mgKOH / g jatropha oil. Methanol is first passed into a 250mL fixed-bed reactor equipped with a cation exchange resin catalyst, and passes to about 80% of the volume of the reactor. 30 o C The circulating hot water passes through the jacket to heat the reaction, and at the same time, the rotating device is turned on at a speed of 600r / min. Jatropha oil was passed into the rotating fixed bed reactor at 2.0mL / min. As the reaction proceeds, observe the stratification of the lower cone product in time, and take samples every 10 minutes. Sample at 75 o Rotary steam at C for 15 minutes, then measure the acid value of the product according to GB / T5530-2005 "Determination of Acid Value and Acidity of Animal and Vegetable Oils and Fats", and use formulas (1) and (2) to calculate the acid value and conversion rate. See Table 3 for specific data.

[0045] Table 3 Reactio...

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Abstract

The invention provides a device and method for preparing biodiesel through a rotary fixed bed fast reaction. The device is mainly composed of a fixed bed reactor with a rotary shaft (9). Firstly, the fixed bed reactor filled with a solid catalyst is added to reactant methyl alcohol, and meanwhile a motor (12) is started to enable a reaction still to rotate. The dropping speed of raw material oil is controlled, and the oil and excessive methyl alcohol are subjected to the fast reaction. The contact chance of the reactant and the catalyst can be increased through rotating, more active point locations can be occupied, and sinking and separation of fatty acid methyl ester can be promoted. By means of a liquid redistributor, the phenomenon that liquid is unevenly distributed due to rotary centrifugation is avoided. The layering condition of sight glass (21) is observed, and products are removed in time. A forward reversible reaction can be accelerated through excessive methyl alcohol, timely removal of the products and the rotary reaction still. The advantages of being easy to operate, high in raw material utilization rate, high in esterification efficiency and the like are achieved, and the device and method can be used for fast and continuous preparation of the biodiesel.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment and biodiesel, and in particular relates to a device and method for preparing biodiesel by rapid reaction of a rotating fixed bed, which is mainly used for rapid generation and separation of biodiesel to realize efficient continuous production. Background technique [0002] With the sharp decline of oil reserves and the serious environmental problems caused by the use of fossil fuels, countries all over the world hope to find new energy sources that are both environmentally friendly and renewable. Biodiesel is a kind of green and environment-friendly energy that has received considerable attention in the past ten years. It uses biological lipids as raw materials and obtains long-chain fatty acid mono-alkyl esters through transesterification with short-chain alcohols. The properties of biodiesel, such as viscosity and calorific value, are similar to those of petrochemical diesel. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C10L1/02
CPCC10L1/02C11C3/04Y02E50/10
Inventor 丁金成马玲玲卢杰吕恩民
Owner SHANDONG UNIV OF TECH
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