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Hybrid catalytic membrane reactor and method for preparing biodiesel by using same

A technology of hybrid catalytic membrane and biodiesel, which is applied in the fields of biofuel, petroleum industry, fatty acid esterification, etc., can solve the problems of difficult recycling of catalyst inorganic alkali, high price of immobilized enzyme, and non-reusable enzyme membrane, etc. Achieve high raw material utilization efficiency, low production cost, and solve the effect of environmental hazards

Inactive Publication Date: 2015-09-02
NINGBO NOHAS CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 200810059776.5 prepared an immobilized enzyme membrane reactor and used it to produce biodiesel. The production efficiency is high, but the price of immobilized enzyme is high, and the enzyme membrane cannot be reused, which greatly increases the reaction cost; in addition, raw materials and products need to be processed many times Through the enzyme membrane, resulting in long reaction cycle and low reaction efficiency
Patent 200910030047.1 invented a method for preparing biodiesel through porous ceramic membrane dispersion and enhanced transesterification reaction. The reaction time is short and the yield is high. However, the catalyst inorganic base used in this method is difficult to recycle and corrosive to equipment; in addition, the catalyst and Low carbon alcohol is added at the same time, it is not easy to separate after the reaction is completed, the catalyst loss is large, and the production cost is high

Method used

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  • Hybrid catalytic membrane reactor and method for preparing biodiesel by using same
  • Hybrid catalytic membrane reactor and method for preparing biodiesel by using same
  • Hybrid catalytic membrane reactor and method for preparing biodiesel by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] according to figure 2 Connect the relevant components and devices, first add 50g of raw material oil and 75g of methanol to the storage tank 1, turn on the constant temperature magnetic stirrer 0, heat the temperature in the storage tank to 40°C, turn on the constant temperature water bath 6 to make the circulating water temperature 40°C . Then turn on the circulating pump 2, control the reading of the pressure gauge to 0.2MPa, and the airspeed to 0.42m 3 / h (the volume of the reaction material passed by the circulating pump per unit time), starting from the feed oil and methanol entering the membrane module, the reaction time is 10h, and the calculated biodiesel yield is 88.3% after the reaction.

Embodiment 2

[0037] according to figure 2 Connect the relevant components and devices, first add 50g of raw material oil and 125g of methanol to the storage tank, turn on the constant temperature magnetic stirrer, heat to the temperature in the storage tank is 60°C, turn on the constant temperature water bath to make the circulating water temperature 60°C. Then turn on the circulation pump, control the reading of the pressure gauge to 0.6MPa, and the airspeed to 1.5m 3 / h, counting from the time when raw oil and methanol enter the membrane module, the reaction time is 30h, and the calculated biodiesel yield is 95.2% after the reaction.

Embodiment 3

[0039] according to figure 2Connect the relevant components and devices, first add 50g of raw material oil and 200g of ethanol to the storage tank, turn on the constant temperature magnetic stirrer, heat to the temperature in the storage tank to 60°C, turn on the constant temperature water bath to make the temperature of the circulating water to 60°C. Then turn on the circulating pump, control the reading of the pressure gauge to 0.4MPa, and the airspeed to 0.96m 3 / h, counting from the time when raw oil and methanol enter the membrane module, the reaction time is 40h, and the calculated biodiesel yield is 97.2% after the reaction.

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Abstract

The invention discloses a hybrid catalytic membrane reactor and a method for preparing biodiesel by using the same. The reactor is characterized by comprising a shell, wherein a plurality of CER / PES (cation exchange resin / polyethersulfone) hybrid catalytic membranes, through which a reaction sequentially passes, are arranged in the shell. The CER / PES hybrid catalytic membrane is fused in the reactor for the first time, and the organic combination of the CER / PES hybrid catalytic membrane and reactor can have the catalytic effect and solve the problem that the catalyst can not be easily recovered and reutilized. Since the reactor does not need any additional acid-base catalyst, no wastewater can be generated to pollute the environment. As long as the circulating pump always circulates and pumps the reaction solvent through the reactor, the conversion from waste edible oil to biodiesel can be completed. The method has the advantages of high raw material utilization efficiency, high product purity and simple operation and after-treatment.

Description

Technical field: [0001] The invention relates to the technical field of biodiesel, in particular to a method for preparing biodiesel by using low-carbon alcohol and waste edible oil as raw materials and performing esterification reaction in a hybrid catalytic membrane reactor. Background technique: [0002] With the depletion of non-renewable petrochemical resources and the aggravation of environmental pollution, biodiesel has attracted the attention of countries all over the world for its environmental protection and renewability. Biodiesel is a typical "green energy". Vigorously developing the biodiesel industry can promote sustainable economic development, reduce environmental pollution, and improve national energy security, which has significant social and economic benefits. [0003] The main components of biodiesel are fatty acid methyl esters. Compared with traditional petrochemical diesel, biodiesel has the advantages of biodegradability, non-toxicity, complete combu...

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 邓杰邱艳莉
Owner NINGBO NOHAS CHEM TECH
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