阅读说明：本技术 一种废油固化剂、制备方法和应用 (Waste oil curing agent, preparation method and application ) 是由 袁昊 杨康 关杰 郭耀广 戴珏 刘欢 顾卫星 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种废油固化剂、制备方法和应用。本发明废油固化剂以重量百分数计,原料配方如下：12-羟基硬脂酸85-94%,一水硅酸镁2-6%,淀粉1-5%,乙醇4-8%,以上总重量满足100%。本发明废油固化剂制备工艺简单便捷,可批量化生产。本发明的固化剂是一种白色粉末状物体,在不影响废油脂燃烧性能的前提下,向餐厨废油中加入固化剂,达到对餐厨废油良好的固化效果,有效解决餐厨废油运输途中泄漏和餐厨废油回流餐桌的问题,可满足批量处理餐厨废油的需求。本发明同比与同类型的产品,具有分散性好,凝固快的特点,同条件下凝固同类型的废油,本固化剂凝固时间可缩短20%左右,明显提高固化效率。(The invention discloses a waste oil curing agent, a preparation method and application. The waste oil curing agent comprises the following raw materials in percentage by weight: 85-94% of 12-hydroxystearic acid, 2-6% of magnesium silicate monohydrate, 1-5% of starch and 4-8% of ethanol, wherein the total weight of the components is 100%. The waste oil curing agent disclosed by the invention is simple and convenient in preparation process and can be produced in batches. The curing agent is a white powdery object, and is added into the kitchen waste oil on the premise of not influencing the combustion performance of waste grease, so that a good curing effect on the kitchen waste oil is achieved, the problems of leakage of the kitchen waste oil in the transportation process and backflow of the kitchen waste oil to a dining table are effectively solved, and the requirement for batch treatment of the kitchen waste oil can be met. Compared with the same type of products, the curing agent has the characteristics of good dispersibility and quick solidification, the waste oil of the same type is solidified under the same condition, the solidification time of the curing agent can be shortened by about 20 percent, and the curing efficiency is obviously improved.)

1. The waste oil curing agent is characterized by comprising the following raw materials in percentage by weight:

85-94% of 12-hydroxystearic acid

2 to 6 percent of magnesium silicate monohydrate

1 to 5 percent of starch

4 to 8 percent of ethanol

The total weight of the components is 100 percent.

2. The waste oil curing agent as set forth in claim 1, wherein the raw material formulation comprises, in weight percent:

85-92% of 12-hydroxystearic acid

2 to 6 percent of magnesium silicate monohydrate

1 to 5 percent of starch

4 to 6 percent of ethanol

The total weight of the components is 100 percent.

3. The preparation method of the waste oil curing agent according to claim 1, comprising the following steps:

(1) mixing 12-hydroxystearic acid, magnesium silicate monohydrate, starch and ethanol uniformly;

(2) and (3) drying the mixed materials in vacuum, and grinding after drying to obtain the waste oil curing agent.

4. The preparation method according to claim 3, wherein in the step (1), the mixture is ultrasonically oscillated in an ultrasonic cleaning machine, the working frequency of the ultrasonic cleaning machine is 30 KHz-80 KHz, and the ultrasonic oscillation time is 2-8 min.

5. The preparation method according to claim 3, wherein in the step (2), the vacuum drying temperature is 20-30 ℃ and the drying time is 2-4 h.

6. The use of the waste oil solidifying agent according to claim 1 in waste oil solidifying treatment, characterized in that the method comprises the following steps: heating the waste oil to be solidified to 95-105 ℃, naturally cooling to 75-85 ℃, then adding a waste oil curing agent into the waste oil, stirring for a long time, shaking the sample for several seconds, standing, and naturally cooling the waste oil to realize solidification of the waste oil.

7. The application of claim 6, wherein the used amount of the waste oil curing agent is 1.0-3.5% of the mass of the waste oil.

8. The application of claim 6, wherein the waste oil is completely solidified when naturally cooled to 27-32 ℃.

9. Use according to claim 6, wherein the waste oil is kitchen waste oil.

Technical Field

The invention relates to the technical field of waste oil recovery treatment, in particular to a waste oil curing agent, a preparation method and application.

Background

The collection and transportation of waste kitchen oil is always a troublesome problem in the catering industry, the waste oil contains heavy metals such as lead, cadmium, arsenic and the like which seriously harm the digestive system and the nervous system of a human body, carcinogenic sodium dodecyl benzene sulfonate and aflatoxin B which is very easy to cause cancer diseases₁. If the kitchen waste oil enters the environment, sewer blockage and pipeline corrosion, serious water quality deterioration and eutrophication can be caused, the treatment efficiency of a biological treatment unit of a sewage treatment plant is reduced, oxidation rancidity is easy to occur in the air, and acid malodorous gas is emitted. It is reported that 15000m per kg of used oil is produced²Water surface pollution leads to water eutrophication in severe cases, so that the kitchen waste oil must be effectively collected and transported to a place meeting the treatment quality for treatment. The kitchen waste oil in China is usually transported in a barrel, but the liquid waste oil has high transportation requirement and is easy to leak, and even can be re-extracted and returned to a dining table by an illegal merchant who desires to fumigate, thereby causing great damage to the health and safety of common people. Therefore, the solidification of the waste kitchen oil has great significance for the treatment of the waste kitchen oil.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a novel waste oil curing agent, a preparation method and application. The invention adopts a novel waste oil curing agent to ensure that the kitchen waste oil can be cured quickly and has good coagulability. The waste oil curing agent disclosed by the invention is simple in preparation process and mild in reaction conditions, can be used for industrial mass production, can facilitate transportation and subsequent safe and reasonable treatment of the kitchen waste oil, not only solves the common problems of easiness in leakage and secondary pollution in the transportation process, but also can effectively avoid the occurrence of kitchen waste grease backflow dining table events.

In order to achieve the above object, the present invention adopts the following technical solutions.

The invention provides a waste oil curing agent which comprises the following raw materials in percentage by weight:

85-94% of 12-hydroxystearic acid

2 to 6 percent of magnesium silicate monohydrate

1 to 5 percent of starch

4 to 8 percent of ethanol

The total weight of the components is 100 percent.

Preferably, the raw material formula is as follows according to the weight percentage:

85-92% of 12-hydroxystearic acid

2 to 6 percent of magnesium silicate monohydrate

1 to 5 percent of starch

4 to 6 percent of ethanol

The total weight of the components is 100 percent.

The invention also provides a preparation method of the waste oil curing agent, which comprises the following specific steps:

(1) mixing 12-hydroxystearic acid, magnesium silicate monohydrate, starch and ethanol uniformly;

(2) and (3) drying the mixed materials in vacuum, and grinding after drying to obtain the waste oil curing agent.

Preferably, in the step (1), ultrasonic oscillation is performed in an ultrasonic cleaning machine during mixing, the working frequency of the ultrasonic cleaning machine is 30 KHz-80 KHz, and the ultrasonic oscillation time is 2-8 min.

Preferably, in the step (2), the vacuum drying temperature is 20-30 ℃, and the drying time is 2-4 h.

The invention further provides an application of the waste oil curing agent in waste oil curing treatment, and the application method comprises the following steps: heating the waste oil to be solidified to 95-105 ℃, naturally cooling to 75-85 ℃, then adding a waste oil curing agent into the waste oil, stirring for a long time (35-45 min), shaking the sample for several seconds, standing, and naturally cooling the waste oil to realize solidification of the waste oil.

Preferably, the usage amount of the waste oil curing agent is 1.0-3.5% of the mass of the waste oil.

Preferably, the waste oil is completely solidified when naturally cooled to 27-32 ℃.

Preferably, the waste oil is kitchen waste oil.

Compared with the prior art, the invention has the beneficial effects that:

the waste oil curing agent can be used for curing kitchen waste oil, and the main component of the curing agent is deca-dihydroxystearic acid (C)₁₈H₃₆O₃) The edible waste oil of the kitchen can be completely cooled to form gel-like solid in a short time (35-45 min), so that a good curing effect can be achieved, the subsequent treatment is basically not influenced, and the problems of collection and transportation of the waste oil of the kitchen are effectively solved. Compared with other types of curing agents on the market, the curing agent has the characteristics of good dispersibility and quick solidification, and can shorten the solidification time by about 20 percent and improve the solidification efficiency when the same type of waste oil is solidified under the same condition.

The invention adds magnesium silicate monohydrate, starch and other substances, so that the waste oil has better solidification state, no looseness and strong toughness.

Drawings

FIG. 1 is a graph showing the curing effect of the curing agent of the present invention at different concentrations.

FIG. 2 is a diagram of the curing process of the curing agent of the present invention.

FIG. 3 is a graph comparing the curing effect of the present invention at 35 ℃ (left) with the curing effect of other products on the market (right).

Fig. 4 is a graph comparing the curing effect of the present invention (left) with the cut surface of other commercial products (right) cured samples.

Detailed Description

The following detailed description of the embodiments of the present invention is provided, but the present invention is not limited to the following description.

In the examples, the sunflower seed oil producer was Shanghai Jiali food industry Co., Ltd, with a production date of 2020, 1 month and 5 days, and an oil shelf life of 18 months. The curing agent on the market adopts a waste oil coagulant produced in Japan and good quality.

Example 1

The novel waste oil curing agent comprises the following raw materials in percentage by weight: 89% of 12-hydroxystearic acid, 2% of magnesium silicate monohydrate, 3% of starch and 6% of ethanol by mass.

Mixing the above materials at a certain proportion, stirring with glass rod, placing the mixture into MMCS-900 type ultrasonic cleaning machine, selecting frequency of 2.8MHz under normal pressure, and shaking for 5 min. And taking out the uniformly mixed product, drying the product in a DZF-6030 desk type vacuum drying oven at the temperature of 20 ℃ for 2.5 hours, grinding the product to 20 meshes after the drying is finished, and thus obtaining the curing agent 12-HSA.

90ml sunflower seed oil, numbered 12-HSA and commercial curing agent respectively, is heated to 100 deg.C, slowly cooled to 80 deg.C, and 2.5g curing agent 12-HSA and 2.5g commercial curing agent are added into two vegetable oil samples respectively, and stirred simply. The vegetable oil is cooled continuously. The solid coagulation of the 12-HSA sample starts at 47 ℃, the edible oil is completely coagulated into a blocky solid at about 31 ℃, the timing is started when the curing agent is added, and the process takes 42 min; the sample of the curing agent on the market begins to have solid coagulation at 39 ℃, edible oil is completely coagulated into a blocky solid at about 25 ℃, the timing is started from the time of adding the curing agent, and the process takes 54 min.

Under the same conditions, the solidification effect at 35 ℃ is shown in figure 3, the left figure shows the solidification effect of a sample of '12-HSA' added with the curing agent of the invention, and the right figure shows the solidification effect of a sample of 'a commercial curing agent' added with a commercial curing agent, so that the curing agent has better solidification effect.

The curing effect (left) of the invention is compared with the effect of other curing agents (right) on the market on the cured sample cutting surface as shown in figure 4, and the curing agent is obviously not loose and has good toughness after being cured, and the other curing agents have the phenomena of oil leakage and looseness.

Example 2

The novel waste oil curing agent comprises the following raw materials in percentage by weight: 92% of 12-hydroxystearic acid, 2% of magnesium silicate monohydrate, 1% of starch and 5% of ethanol.

Mixing the above materials at a certain proportion, stirring with glass rod, placing the mixture into MMCS-900 type ultrasonic cleaning machine, selecting frequency of 2.8MHz under normal pressure, and shaking for 5 min. And taking out the uniformly mixed product, and drying in a DZF-6030 desk type vacuum drying oven at the temperature of 20 ℃ for 2.5 hours. Grinding to 20 meshes after drying, and obtaining the curing agent 12-HSA.

100ml sunflower seed oil, numbered 12-HSA and commercial curing agent, respectively, was heated to 100 deg.C, slowly cooled to 85 deg.C, and 2.7g of the curing agent prepared in this example and 2.7g of the commercial curing agent were added to two vegetable oil samples, respectively, and stirred briefly. The vegetable oil is cooled continuously. The 12-HSA sample has solid coagulation at 45 ℃, the edible oil at 27 ℃ is completely coagulated into a blocky solid, and the process takes 39min from the time of adding the curing agent. The "commercial hardener" sample began to coagulate solid at 38 deg.C, the edible oil had completely coagulated into a block solid at 22 deg.C, and the process took 55min from the time the hardener was added.

Example 3

The novel waste oil curing agent comprises the following raw materials in percentage by weight: 85 percent of 12-hydroxystearic acid, 6 percent of magnesium silicate monohydrate, 5 percent of starch and 4 percent of ethanol.

Mixing the above materials at a certain proportion, stirring with glass rod, placing the mixture into MMCS-900 type ultrasonic cleaning machine, selecting frequency of 2.8MHz under normal pressure, and shaking for 5 min. And taking out the uniformly mixed product, and drying in a DZF-6030 desk type vacuum drying oven at the temperature of 20 ℃ for 2.5 hours. Grinding to 20 meshes after drying to obtain the curing agent 12-HSA.

100ml sunflower seed oil, numbered 12-HSA and commercial curing agent respectively, was heated to 100 deg.C, slowly cooled to 78 deg.C, and 2.7g curing agent 12-HSA prepared in this example and 2.2g curing agent commercially available were added to two vegetable oil samples respectively, and stirred simply. The vegetable oil is cooled continuously. The 12-HSA sample has solid coagulation at 45 ℃, the edible oil at 28 ℃ is completely coagulated into a blocky solid, and the process takes 45min from the time of adding the curing agent. The "commercial hardener" sample began to coagulate as solids at 38 deg.C, the edible oil had completely coagulated into a block-like solid at 20 deg.C, and this took 57min since the hardener was added.

The above examples are only for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.