Method for producing alkanolamide by taking crude oil as raw material

A technology of alkanolamides and alkanolamines, which is applied in the preparation of carboxylic acid amides, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of material loss, complicated handling, and secondary pollution, and improve the utilization rate. , enrich product varieties, simplify the production process

Active Publication Date: 2013-02-06
ZANYU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1) During alkali refining, oil will be hydrolyzed, saponified or soap will be contained in the lower layer, resulting in material loss;
[0009] 2) The alkali refining wastewater produced by the neutralization of crude oil with dilute alkali is alkaline, and generally needs to be added to the acid neutralization before entering the sewage treatment system; the wastewater contains some organic substances, and the COD of the sewage is above 10000mg / L; the alkali refining layer contains Fatty acid sodium and free alkali generally need to be washed with dilute brine, and waste water will be generated during washing; therefore, the total amount of waste water produced by this method is relatively large, the treatment pressure is high, and it is easy to pollute the environment
[0010] 3) The soapstock water produced during the deacidification process of crude oil alkali refining is mainly composed of soap base, water and some oil, which is complicated to handle and causes secondary pollution at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 8t of decolorized coconut oil (acid value 8.5mgKOH / g) and 200kg of diethanolamine to a 10t kettle, raise the temperature to 50°C and stir for 15min, and let the layers stand for 8h to obtain 7.8t of the upper layer essential oil containing 0.21% free acid, and the lower layer Amine soap is about 400Kg.

[0034] According to the conventional glyceride method, add 3.9t of diethanolamine and 30Kg of catalyst to the upper essential oil, and react at 75-70°C for 6 hours to obtain qualified coconut acid diethanolamide, the amine value is 25.6mgKOH / g, the color is 196hazen, and the free oil is 2.3 %

[0035] The lower layer obtains about 400Kg of amine soap, the main components of which are fatty acids and diethanolamine; according to the fatty acid method, after reacting at 140-135°C for 5 hours, add 1kg of sodium hydroxide, and continue to react at 75-72°C for 3 hours to obtain coconut oil Acid diethanolamide, amine value 81.3mgKOH / g, color 436hazen, free oil 1.3%, glyc...

Embodiment 2

[0037] Add 8t of decolorized palm kernel oil (acid value 10mgKOH / g) and 130kg of monoethanolamine into a 10t kettle, heat up to 50°C and stir for 15min, centrifuge to obtain 7.73t of the upper essential oil containing 0.19% free acid, and the lower amine soap of about 400Kg.

[0038] According to the conventional glyceride method, add 2.1t of monoethanolamine and 20Kg of catalyst to the upper essential oil, and react at 85-80°C for 6 hours to obtain qualified cocoic acid monoethanolamide, the amine value is 9.6mgKOH / g, the color is 21hazen, and the free oil is 6.3 %.

[0039] The lower layer obtains about 400Kg of amine soap, the main components of which are fatty acids and monoethanolamine; according to the fatty acid method, after reacting at 130-125°C for 4 hours, add 1 kg of potassium hydroxide, and continue to react at 80-76°C for 3 hours to obtain coconut oil Acid monoethanolamide, amine value 36.3mgKOH / g, color 59hazen, free oil 5.3%, glycerin content 0.61%.

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Abstract

The invention relates to a method for producing alkanolamide by taking crude oil as a raw material, which has the characteristics that the method is simple to operate and can effectively reduce the crude oil consumption and waste water output. The method adopts the technical scheme that the method for producing the alkanolamide by taking the crude oil as the raw material comprises the following steps that A, the crude oil is directly decolorized; B, a given amount of alkanolamine is added according to the fatty acid content in the decolorized crude oil, the alkanolamine and the crude oil are stirred for 10-120 min and heated to 30-80 DEG C, and the addition weight of the alkanolamine is 1-10 times the weight of fatty acid in the crude oil; C: amine degradation products are separated, amine soap is obtained at the lower layer, and essential oil with a lower acid value is obtained at the upper layer; D: the essential oil at the upper layer reacts with the alkanolamine and catalyst according to a glyceride process at a low temperature to produce the alkanolamide; and E: the amine soap at the lower layer reacts at a high temperature according to a fatty acid process, and continues to react at a low temperature after the catalyst is added to obtain the alkanolamide.

Description

technical field [0001] The invention relates to an oil refining process in the production of alkanolamides, which is suitable for the technical field of oil production alkanolamides. Background technique [0002] Alkanolamides (i.e. fatty acid alkanolamides) have excellent foam increasing, foam stabilizing, thickening, decontamination and emulsifying properties, and have a certain antistatic ability and rust resistance, so they can be used as foam accelerators, foam stabilizers, etc. Agents, antirust agents, antistatic agents and dispersants, etc., especially its non-toxic, harmless and high biodegradation rate, can be widely used in detergents, cosmetics, plastics, textile auxiliaries, metal cleaning and processing, etc. In the industrial field, it is a nonionic surfactant with large domestic production and consumption. [0003] According to the different raw materials used, the current industrial production of fatty acid alkanolamides is generally made of coconut oil, pal...

Claims

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Application Information

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IPC IPC(8): C07C231/02C07C233/18
Inventor 史立文葛赞邹欢金华文高
Owner ZANYU TECH GRP CO LTD
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