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A preparation method, rectification equipment and treatment process of methyl oleate

A technology of methyl oleate and rectification, which is applied to the preparation of carboxylic acid esters, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of unrealizable materials, low product yield, large amount of methanol consumption, etc., and achieve saving Effects of time and energy, increase in yield, and saving manpower and material resources

Active Publication Date: 2017-01-11
QINGDAO WANTAI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned problems such as the large amount of methanol used in the preparation method of the prior art, the recycling of materials cannot be realized in the subsequent treatment process, and the product yield is low, the invention provides a kind of preparation method of methyl oleate , rectifying equipment and processing technology thereof, the present invention has adopted following technical scheme:

Method used

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  • A preparation method, rectification equipment and treatment process of methyl oleate
  • A preparation method, rectification equipment and treatment process of methyl oleate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Add 3.5 tons of acidified oil into the reaction kettle, and then add a solid acid catalyst H with an acidified oil quality of 5‰ 2 SO 4 / SiO 2 , stir and gradually raise the temperature to 95°C, then feed methanol for esterification reaction, the time for the first feed of methanol is 3 hours, the amount of methanol used is 3 tons, the mass ratio of acidified oil to methanol is 1.17:1 when the acid value drops to 2mg / g When the reaction ends, the liquid crude methyl ester is then added to the heating evaporator 1 for decomposition, and the gas-liquid mixture decomposed enters the decolorization tower 2, and the gas enters the condenser 5 for decolorization upwards to condense to obtain liquid methyl oleate Stored in the storage tank 16, the unvaporized liquid flows to the heater 3 at the bottom of the decolorization tower 2 and decomposes again, and the decomposed gas enters the condenser 5 to cool down after decolorization, and the product enters the storage tank 16, ...

Embodiment 2

[0030] Add 3.5 tons of acidified oil into the reaction kettle, and then add a solid acid catalyst H with an acidified oil quality of 4‰ 2 SO 4 / SiO 2 , stir and gradually raise the temperature to 90°C, and then feed methanol for esterification reaction. The time for feeding methanol is 5 hours, and the mass ratio of acidified oil to methanol is 1:1. When the acid value drops to 2.5 mg / g, the reaction ends, and then The liquid crude methyl ester is added to a rectification device for rectification and purification to obtain methyl oleate, and the yield of the prepared methyl oleate is 93.1%.

Embodiment 3

[0032] Add 3.5 tons of acidified oil into the reaction kettle, and then add a solid acid catalyst H with an acidified oil quality of 6‰ 2 SO 4 / SiO 2 , stir and gradually raise the temperature to 93°C, then feed methanol for esterification reaction, the time for feeding methanol is 4h, the mass ratio of acidified oil to methanol is 1.5:1, when the acid value drops to 2.3mg / g, the reaction ends, and then The liquid crude methyl ester is added to a rectification device for rectification and purification to obtain methyl oleate, and the yield of the prepared methyl oleate is 94%.

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Abstract

The invention provides a preparation method of methyl oleate, rectification equipment and a treatment process thereof. The preparation method comprises the following steps: adding acidic oil to a reaction kettle, then adding a solid acid catalyst, stirring, and increasing temperature; then introducing methanol for esterification reaction; then adding liquid coarse methyl ester to the rectification equipment for rectification and purification to prepare the methyl oleate. The rectification equipment comprises a heating evaporator, a decoloration tower, a condenser, a circulating pump and a storage tank, wherein the prepared coarse methyl ester is added to a heater for decomposition and then flows into the decoloration tower, a material which is not completely decomposed flows to a heating pipe positioned on a tower bottom for secondary decomposition and then pumped into the heater through a reflex pump, and sequential circulation is carried out to finally obtain the methyl oleate. Compared with the traditional process, the preparation method provided by the invention can be used for greatly saving the use amount of methanol and saving the cost. Compared with the traditional film-coated type scrape evaporator and the traditional condenser, the methyl ester rectification equipment provided by the invention is greatly improved in yield.

Description

technical field [0001] The invention belongs to the field of organic chemical synthesis, in particular to a method for preparing methyl oleate, rectification equipment and a treatment process thereof. Background technique [0002] Methyl oleate is a very potential substitute for mineral lubricating oil, but methyl oleate contains a large number of double bonds, resulting in poor oxidation stability and it is difficult to meet the performance standards of conventional lubricants. The epoxidation of methyl oleate can greatly reduce its iodine value, and the obtained epoxidized methyl oleate has high oxidation stability and good lubricating performance, and can meet the performance standard of lubricating oil. In addition, epoxidized methyl oleate is a non-toxic plasticizer recognized in the world. It has excellent thermal stability and light stability, and has good plasticizing durability. It is a very important industrial additive. [0003] The synthesis of methyl oleate has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/08C07C67/54C07C69/58
CPCC07C67/08C07C67/54C07C69/58
Inventor 赵学金
Owner QINGDAO WANTAI BIOTECH