Method for preparing marine fuel oil by utilizing illegal cooking oil based on glycerol esterification process

A technology of glyceride and waste oil, applied in the field of biodiesel preparation, can solve the problems of engine corrosion, high acidity value and high energy consumption, and achieve the effects of avoiding excessive methanol residue, reducing the amount of solid impurities and reducing the acidity value.

Pending Publication Date: 2021-05-28
MAOMING KAIYUE SPECIAL AGENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method of using waste oil to prepare biodiesel has many solid impurities, high energy consumption, high residual methanol, and high acidity value, which may easily cause engine corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1. A method for preparing marine fuel oil from waste oil based on the glycerol esterification process, including:

[0023] S1. Pour the raw material oil into the first reaction kettle equipped with a heat exchanger and a filter screen, and the heat exchanger is located above the filter screen, and both the filter screen and the heat exchanger are inclined towards the slag discharge port of the first reaction kettle. Use a heat exchanger to preheat the raw material oil to 100~120°C, so that the liquid raw material oil will fall into the bottom of the first reaction kettle through the filter screen, and the solid impurities in the raw material oil will enter and drain along the surface of the heat exchanger and the surface of the filter net. The slag port is used to filter out solid impurities to obtain liquid crude oil;

[0024] S2. Pump liquid crude oil and glycerin into the reaction tube at a ratio of 1:1 to the molar ratio of fatty acids in glycerol to liqu...

Embodiment 2

[0030] Embodiment 2. A method for preparing marine fuel oil from waste oil based on the glycerol esterification process, including:

[0031] S1. Pour the raw material oil into the first reaction kettle equipped with a heat exchanger and a filter screen, and the heat exchanger is located above the filter screen, and both the filter screen and the heat exchanger are inclined towards the slag discharge port of the first reaction kettle. Use a heat exchanger to preheat the raw material oil to 100~120°C, so that the liquid raw material oil will fall into the bottom of the first reaction kettle through the filter screen, and the solid impurities in the raw material oil will enter and drain along the surface of the heat exchanger and the surface of the filter net. The slag port is used to filter out solid impurities to obtain liquid crude oil;

[0032] S2. Pump liquid crude oil and glycerol into the reaction tube at a ratio of 1.5:1 to the fatty acid molar ratio of glycerol and liqui...

Embodiment 3

[0038] Embodiment 3, the method for preparing bunker fuel oil from waste oil based on the glycerol esterification process, including:

[0039]S1. Pour the raw material oil into the first reaction kettle equipped with a heat exchanger and a filter screen, and the heat exchanger is located above the filter screen, and both the filter screen and the heat exchanger are inclined towards the slag discharge port of the first reaction kettle. Use a heat exchanger to preheat the raw material oil to 100~120°C, so that the liquid raw material oil will fall into the bottom of the first reaction kettle through the filter screen, and the solid impurities in the raw material oil will enter and drain along the surface of the heat exchanger and the surface of the filter net. The slag port is used to filter out solid impurities to obtain liquid crude oil;

[0040] S2. Pump liquid crude oil and glycerol into the reaction tube at a ratio of 2:1 to the molar ratio of fatty acids in glycerol to liq...

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Abstract

The invention relates to a method for preparing marine fuel oil by using illegal cooking oil based on a glycerol esterification process, which comprises the following steps: preheating raw oil, filtering out solid impurities to obtain liquid crude oil, pumping the liquid crude oil and glycerol into a reaction tube in proportion, and carrying out a glycerol esterification reaction on the liquid crude oil and the glycerol in the reaction tube, cooling a product of the glycerol esterification reaction through a heat exchanger, injecting the product of the glycerol esterification reaction and methanol into a second reaction kettle according to a ratio to carry out an ester exchange reaction, washing the product of the ester exchange reaction with water, carrying out centrifugal separation, and introducing water-containing fatty acid methyl ester after centrifugation into a flash dryer to dehydrate, and decolorizing the dehydrated fatty acid methyl ester to obtain the purified marine combustion oil. The device has the beneficial effects that the solid impurity amount in the marine fuel oil is reduced, and the energy required for preheating the raw oil is reduced; excessive methanol residue caused by excessive methanol is avoided; the glycerol esterification reaction is thorough by reasonably preparing the amount of glycerol, so that the acidity value is reduced.

Description

technical field [0001] The invention relates to the field of biodiesel preparation, in particular to a method for preparing marine fuel oil from waste oil based on a glycerol esterification process. Background technique [0002] Waste oil is a general term for all kinds of low-quality oil in people's daily life. The quality of waste oil is extremely poor, extremely unhygienic, and the peroxide value, acid value, and water content are seriously exceeded. At present, the disposal of "gutter oil" is mainly through primary processing or simple deep processing, and the products made include: stearic acid raw materials, feed additives, soap raw materials, machining oil, mold release oil, etc. All of these methods have the same problems of backward technology, poor equipment, serious pollution, and poor sanitation. Waste oil reuse is an effective way to curb "poisonous oil". [0003] The existing method for preparing biodiesel from waste oil has many solid impurities, high energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/06C11C3/10C11C1/08C11C1/10C10L1/02
CPCC11C3/06C11C3/10C11C1/08C11C1/10C10L1/02
Inventor 梁耕生柯荣豪麦启文
Owner MAOMING KAIYUE SPECIAL AGENT
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