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Real-time dynamic separation and continuous reaction system for biodiesel transesterification and application of system

A real-time dynamic, biodiesel technology, applied in the fields of biofuels, fatty acid esterification, chemical/physical/physical-chemical processes, etc., to achieve the effect of improving reaction efficiency, conversion rate, and conversion rate

Pending Publication Date: 2017-10-10
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failed to simultaneously perform real-time dynamic separation of glycerol during the transesterification reaction

Method used

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  • Real-time dynamic separation and continuous reaction system for biodiesel transesterification and application of system
  • Real-time dynamic separation and continuous reaction system for biodiesel transesterification and application of system
  • Real-time dynamic separation and continuous reaction system for biodiesel transesterification and application of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The working process of the biodiesel transesterification real-time dynamic separation continuous reaction system is as follows:

[0041] (1) Mix anhydrous methanol and KOH and then mix them with rapeseed oil and add them to the stirring mixing tank for thorough mixing, wherein the molar ratio of anhydrous methanol to rapeseed oil is 6:1, and the mass ratio of KOH to rapeseed oil is 0.1;

[0042] (2) The above-mentioned mixture is input into a tubular plug flow reactor with a temperature of 67°C at a flow rate of 0.77 m / s through a material pump;

[0043] (3) Under the action of KOH, anhydrous methanol and rapeseed oil gradually undergo transesterification reaction in the process of propulsion in the tubular plug flow reactor to generate biodiesel and glycerol. Settle and discharge from the outlet of glycerin; unreacted oil, methanol, biodiesel and lye, after flowing through the real-time dynamic separation device of glycerin, enter the next layer of plug flow reactor t...

Embodiment 2

[0047] Same as Example 1, the difference is:

[0048] The reaction temperature in the plug flow reactor is 65°C, the liquid alkaline catalyst is NaOH, the raw material oil is soybean oil, the weight ratio of NaOH to soybean oil is 0.3, and the molar ratio of anhydrous methanol to soybean oil is 6:1.

[0049] It has been determined that the conversion rate of the product is about 99.5% under this condition.

Embodiment 3

[0051] Same as Example 1, the difference is:

[0052] The reaction temperature in the plug flow reactor is 65°C, the liquid alkaline catalyst is KOH, the raw material oil is pistachio oil, the weight ratio of KOH to pistachio oil is 0.2, and the molar ratio of anhydrous methanol to pistachio oil is 6:1 .

[0053] It has been determined that the conversion rate of the product is about 99.3% under this condition.

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Abstract

The invention discloses a real-time dynamic separation and continuous reaction system for biodiesel transesterification. The system comprises a piston flow reactor and a raw material conveying pipeline communicated with the piston flow reactor, wherein a mixed liquid inlet is arranged on one side of the piston flow reactor, the raw material conveying pipeline comprises a material pump and a mixing kettle, one end of the material pump is communicated with the mixing kettle, the other end is communicated with the piston flow reactor through the mixed liquid inlet, the piston flow reactor is a tubular reactor formed by multiple pipelines, and a real-time dynamic glycerin separation device for separating glycerin from reactants is arranged at one end of the pipeline on each even-numbered layer of the piston flow reactor. The biodiesel reaction and separation devices are integrated in the same operation unit, so that product production and separation are performed simultaneously; real-time dynamic discharge of glycerin breaks the balance state of the reversible reaction, and thus, the reversible reaction is performed in the biodiesel production direction. The conversion rate of biodiesel is increased and the conversion efficiency of biodiesel is improved.

Description

Technical field: [0001] The invention belongs to the technical field of biodiesel preparation, in particular to a biodiesel transesterification real-time dynamic separation continuous reaction system and its application. Background technique: [0002] Biodiesel is a clean renewable energy and a high-quality substitute for petroleum diesel. Vigorously developing biodiesel has important strategic significance for sustainable economic development, promoting energy substitution, reducing environmental pressure, and controlling urban air pollution. [0003] At present, the industry mainly adopts batch reaction process, which has low production efficiency, high energy consumption, unstable product quality and poor scale efficiency. However, continuous production is energy-saving, low-cost, and high-efficiency in scale. Currently, continuous production has become a trend in the industrial production of biodiesel. [0004] Patent CN201510055701.X discloses the continuous transeste...

Claims

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Application Information

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IPC IPC(8): C11C3/04C11C3/10C10L1/02B01F7/18B01J19/00B01D21/02
CPCB01D21/02B01J19/0053C10L1/02C11C3/04C11C3/10B01F27/90Y02E50/10
Inventor 苗长林李惠文吕鹏梅杨玲梅罗文李志兵王治元付俊鹰王忠铭
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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