CN113025432A - Method for refining kitchen waste oil - Google Patents
Method for refining kitchen waste oil Download PDFInfo
- Publication number
- CN113025432A CN113025432A CN202011320350.8A CN202011320350A CN113025432A CN 113025432 A CN113025432 A CN 113025432A CN 202011320350 A CN202011320350 A CN 202011320350A CN 113025432 A CN113025432 A CN 113025432A
- Authority
- CN
- China
- Prior art keywords
- oil
- liquid
- hours
- separated
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007670 refining Methods 0.000 title description 5
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 22
- 230000007062 hydrolysis Effects 0.000 claims abstract description 21
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000010411 cooking Methods 0.000 claims abstract description 12
- 239000004519 grease Substances 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 11
- 239000000701 coagulant Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 230000001376 precipitating effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004332 deodorization Methods 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 33
- 239000008157 edible vegetable oil Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 235000021190 leftovers Nutrition 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 206010016952 Food poisoning Diseases 0.000 description 1
- 208000019331 Foodborne disease Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
A treatment process of kitchen waste oil, 1) recovering kitchen waste and collecting the waste through a mobile phone system; 2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling; 3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 1-3 parts of grease coagulant according to the mass ratio of the liquid when the material turns over, continuously cooking for 3-5 hours, cooling, and precipitating for 2-3 hours; 4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa 6-9 hours to finish hydrolysis when the pressure reaches 0.8 mPa; 5) and (3) carrying out oil-water separation, and naturally condensing to obtain refined waste kitchen oil. The process flow has reasonable structure, simple operation and no environmental pollution.
Description
Technical Field
The invention belongs to the technical field of grease refining, and particularly relates to a method for refining kitchen waste oil.
Background
The catering industry on the market needs to discharge a large amount of discarded object every day, be leftover bits, leftovers promptly, and these discarded objects are general name swill, and the kitchen waste oil is the rubbish that flows secretly in the city sewer. The elutriator processes the oil and shakes the oil to become the edible oil on the table. They fish a large amount of dull, turbid and slightly red paste from the garbage every day, and the garbage which emits the foul smell can be changed into clear edible oil only by filtering, heating, precipitating and separating overnight, and finally the edible oil is sold at low price and returned to the dining tables of people. The major component of the Sanwu product called as the waste kitchen oil is triglyceride, but the Sanwu product contains more pathogenic and carcinogenic toxic substances than real edible oil.
The first reaction of people to mention waste kitchen oil is that the waste kitchen oil is non-edible oil with extremely poor quality and insanitation. As people think, once the 'kitchen waste oil' is eaten, the 'kitchen waste oil' can damage human leucocytes and alimentary tract mucous membranes, cause food poisoning and even cause serious consequences of cancer. Therefore, the waste kitchen oil is forbidden to be used in the field of edible oil. However, some illegal vendors are driven by benefits to privately produce and process ' waste kitchen oil ' regardless of the life safety of people and sell the waste kitchen oil ' as edible oil to small restaurants at low price, and the defects that the waste kitchen oil causes great harm to the mind and body of people exist. Therefore, the name of waste kitchen oil is a generic term for various inferior oils which are harmful to human bodies in life. The recovery of the waste kitchen oil can be carried out by various methods and different purposes, and the waste kitchen oil can be recycled to prepare an industrially used product only by a recovery enterprise through different methods, so that the waste is changed into valuable, and the waste kitchen oil can still be used for a large number of purposes.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the method for refining the kitchen waste oil, which has the advantages of reasonable process flow structure, simple and convenient operation and no environmental pollution.
In order to achieve the purpose, the invention adopts the technical scheme that:
a treatment process of kitchen waste oil comprises the following steps:
1) recycling the kitchen waste and collecting the waste through a mobile phone system;
2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling;
3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 1-3 parts of grease coagulant according to the mass ratio of the liquid when the material turns over, continuously cooking for 3-5 hours, cooling, and precipitating for 2-3 hours;
4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa 6-9 hours to finish hydrolysis when the pressure reaches 0.8 mPa;
5) and after oil-water separation and impurity filtration, naturally condensing to obtain refined kitchen waste oil.
The grease coagulant is a food-grade grease coagulant.
The beneficial effects of the invention relative to the prior art are as follows:
the invention protects and improves the environment, develops the circular economy, increases the high-efficiency comprehensive utilization of wastes in the industry of 'two-high-one-resource', reduces the pollutant discharge, changes liquid oil into powdery and solid substances, prevents 'waste kitchen oil' from flowing into dining tables, harms the human health and increases the social benefit. The harmful wastes which are harmful to the environment and the life safety of people are changed into beneficial products which are beneficial to environmental protection and benefit the clean life of people,
Detailed Description
The invention will be further described in detail with reference to the following examples:
example 1
A treatment process of kitchen waste oil comprises the following steps:
1) recycling the kitchen waste and collecting the waste through a mobile phone system;
2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling;
3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 1 part of grease coagulant according to the mass ratio of the liquid when the material is turned over, continuously cooking for 3 hours, cooling, and precipitating for 2 hours;
4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa for 6 hours to finish hydrolysis when the pressure reaches 0.8 mPa;
through detection, the purity of the refined kitchen waste oil reaches 90%.
Example 2
A treatment process of kitchen waste oil comprises the following steps:
1) recycling the kitchen waste and collecting the waste through a mobile phone system;
2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling;
3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 2 parts of grease coagulant according to the mass ratio of the liquid when the material is turned over, continuously cooking for 4 hours, cooling, and precipitating for 2.5 hours;
4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa for 7.5 hours to finish hydrolysis;
through detection, the purity of the refined kitchen waste oil reaches 93%.
Example 3
A treatment process of kitchen waste oil comprises the following steps:
1) recycling the kitchen waste and collecting the waste through a mobile phone system;
2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling;
3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 3 parts of grease coagulant according to the mass ratio of the liquid when the material is turned over, continuously cooking for 5 hours, cooling, and precipitating for 3 hours;
4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa for 9 hours to finish hydrolysis when the pressure reaches 0.8 mPa;
5) and after oil-water separation and impurity filtration, naturally condensing to obtain refined kitchen waste oil.
Through detection, the purity of the refined kitchen waste oil reaches 97%.
In summary, the settled coagulated oil is analyzed for acid value, the hydrolysis time is determined according to the acid value, and then the settled neutral oil is mixed with water in a ratio of 3: 2, pumping the mixture into a hydrolysis tower, introducing steam for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa9 h after the pressure reaches 0.8mPa, so that the hydrolysis is finished with the best effect.
Claims (2)
1. A treatment process of kitchen waste oil is characterized by comprising the following steps:
1) recycling the kitchen waste and collecting the waste through a mobile phone system;
2) the swill garbage is separated from the solid garbage by an automatic separation system, the separated swill garbage is separated by a solid-liquid separation system to obtain recovered liquid, and the solid is reserved for recycling;
3) pumping the recovered liquid into a recovery tank, introducing steam for cooking, adding 1-3 parts of grease coagulant according to the mass ratio of the liquid when the material turns over, continuing cooking for 3-5 hours, cooling, precipitating for 2-3 hours, and performing deodorization treatment;
4) taking out the residual liquid, pumping the settled coagulum into a hydrolysis tower (4) according to the mass ratio of 3 parts to 2 parts, introducing steam into the hydrolysis tower (4) for heating, increasing the pressure for hydrolysis reaction, and keeping the pressure at 0.8mPa 6-9 hours to finish hydrolysis when the pressure reaches 0.8 mPa;
5) and after oil-water separation and impurity filtration, naturally condensing to obtain refined kitchen waste oil.
2. The treatment process of the kitchen waste oil according to claim 1, wherein the grease coagulant is a food-grade grease coagulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320350.8A CN113025432A (en) | 2020-11-23 | 2020-11-23 | Method for refining kitchen waste oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320350.8A CN113025432A (en) | 2020-11-23 | 2020-11-23 | Method for refining kitchen waste oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113025432A true CN113025432A (en) | 2021-06-25 |
Family
ID=76459202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011320350.8A Pending CN113025432A (en) | 2020-11-23 | 2020-11-23 | Method for refining kitchen waste oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113025432A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546948A (en) * | 2021-08-04 | 2021-10-26 | 合肥工业大学 | Method for producing soluble denitrification carbon source by enhancing thermal hydrolysis of kitchen waste and synchronously separating and recovering grease |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586042A (en) * | 2012-03-02 | 2012-07-18 | 杨解定 | System device for extracting swill-cooked dirty oil as well as application method of extracted swill-cooked dirty oil and swill-cooked dirty oil |
| CN110818837A (en) * | 2019-08-19 | 2020-02-21 | 南昌大学 | Maleate polymer, waste edible oil coagulant and preparation method thereof |
-
2020
- 2020-11-23 CN CN202011320350.8A patent/CN113025432A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586042A (en) * | 2012-03-02 | 2012-07-18 | 杨解定 | System device for extracting swill-cooked dirty oil as well as application method of extracted swill-cooked dirty oil and swill-cooked dirty oil |
| CN110818837A (en) * | 2019-08-19 | 2020-02-21 | 南昌大学 | Maleate polymer, waste edible oil coagulant and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113546948A (en) * | 2021-08-04 | 2021-10-26 | 合肥工业大学 | Method for producing soluble denitrification carbon source by enhancing thermal hydrolysis of kitchen waste and synchronously separating and recovering grease |
| CN113546948B (en) * | 2021-08-04 | 2022-04-26 | 合肥工业大学 | Method for producing soluble denitrification carbon source by enhancing thermal hydrolysis of kitchen waste and synchronously separating and recovering grease |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210625 |
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| RJ01 | Rejection of invention patent application after publication |