Mixed fatty acid and its prepn process and application

A technology of mixing fatty acids and fatty acids, which is applied in the direction of recovering fat oil/fatty acid from waste materials, producing fat, and recycling fatty substances, etc. It can solve problems such as difficult direct utilization, environmental pollution, and large alkali content, and achieves good application prospects , less investment in equipment and strong liquidity

Inactive Publication Date: 2006-08-23
杨解定
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Vegetable oil waste is the waste discharged after refining in the process of producing vegetable edible oil. Because of its high alkali content, it is difficult to directly use it
Oil foot discharge can damage the soil and cause environmental pollution
At present, although it is possible to prepare acidified oil to produce fatty acids by cooking oil feet, this method is not only extremely backward, but also requires the addition of catalysts for saponification and acidolysis, which is a non-industrial soil method. The discharged acid water and waste residue can cause new pollution and damage to lakes and soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Utilize vegetable oil foot to prepare mixed fatty acid

[0016] The specific implementation steps are as follows:

[0017] 1) Put the vegetable oil foot into the oil foot pool, and then input the oil foot into the reaction kettle through the potential difference device. Pass steam into the reaction kettle, heat and stir the oil base, add sulfuric acid (5% to 10%) for acidification treatment, observe the oil surface after standing still, and release waste acid water when the pH value is 1 to 2 Put it into the raw material pool, then wash it with hot water, and when the pH value is 6, discharge the waste water. Since the oil foot contains part of soapstock, part of neutral oil (PH value of 6-8) and phospholipids, neutral acidified oil with high purity (PH value of 6-8) can be obtained in the reactor. There are waste water and neutral mixture waste liquid (PH value is 6-8).

[0018] 2) The waste water is discharged from the reaction kettle and transported ...

Embodiment 2

[0023] Embodiment 2: Utilize the present invention to produce new products such as oleic acid and stearic acid by the mixed fatty acid that vegetable oil foot is produced

[0024] The specific implementation steps 1) to 6) of this embodiment are the same as in Example 1, and step 7) is as follows: the white liquid mixed fatty acid obtained in the above step 6) is input into a freezing pot with a gear pump, and the fatty acid is mixed with the fatty acid under constant stirring. Freezing and emulsification separation, distillation to produce qualified oleic acid and stearic acid, is a product of fatty acid deep processing.

Embodiment 3

[0025] Embodiment 3: Utilize the present invention to produce non-phosphorus and benzene-free soap powder, washing powder by the mixed fatty acid that vegetable oil foot is produced

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PUM

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Abstract

The present invention relates to a kind of mixed fatty acid and its preparation process and application. The preparation process includes the following steps: 1. heating oil leftover with steam, stirring, acidifying and hot water washing to obtain neutral acidified oil; 2. separating waste water from oil leftover and repeating the step 1; 3. separating the exhausted neutral mixture waste liquid and separating suspension acting as isolating agent; 4. mixing the separated neutral acidified oil with water and hydrolysis at 120 deg.c and 1 MPa; 5. precipitating the hydrolyte to obtain black fatty acid; 6. steam dewatering black fatty acid; and 7. negative pressure distilling black fatty acid to obtain transparent liquid mixed fatty acid. The prepared mixed fatty acid has high activity, good flexibility, high flowability and low cost, and may be used as main material for producing washing powder, and in producing oleic acid, stearic acid and other products.

Description

technical field [0001] The invention relates to a fatty acid and its preparation method and application, in particular to a mixed fatty acid prepared from vegetable oil residues and its preparation method and application. Background technique [0002] Vegetable oil foot is the waste discharged after refining in the process of producing vegetable edible oil. Because of its high alkali content, it is difficult to directly use it. Oil foot discharge will damage the soil and cause environmental pollution. At present, although it is possible to prepare acidified oil to produce fatty acids by cooking oil feet, this method is not only extremely backward, but also requires the addition of catalysts for saponification and acidolysis, which is a non-industrial soil method. The discharged acid water and waste residue can cause new pollution and damage to lakes and soil. Therefore, it is meaningful to study a new method of preparing mixed fatty acids from vegetable oil. Contents of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B13/02
CPCY02W30/74
Inventor 杨解定张永谊眭栋
Owner 杨解定
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