Method and process of refining biodiesel from gutter oil

Biodiesel. It is a typical green energy source.

It is made from vegetable oils or animal fats, including waste oil that is not used for frying electricity and gutter oil from sewers.

So how is biodiesel refined?

Clause. First, the first car will transport the recovered waste oil to the filtration plant, inject it into a large storage tank, and then evaporate the water in the waste oil by heating, and after the water is completely evaporated, the waste oil can be filtered in stages. First, the gutter oil is poured onto the vibratory power grid, removing large pieces of debris.

After the first filtration, the gutter oil looks a little clearer. It is then poured into a second, densely perforated vibrating strainer to remove the smaller residue. At this point, the gutter oil becomes clearer, but there are still tiny residues.

Clause. Second, then pour in the third and final filter, which is composed of 20 layers of ultra-fine cotton, which can remove the residue that is 80 times thinner than your hair, and the intercepted residue will form a dirt on the filter. The gutter oil that used to be in the sewer can now be used to extract diesel.

Next, the filtered gutter oil is sent to the biochain oil for frying, where they are placed in storage tanks until they are ready to enter the refining process. First, mix the gutter oil with methanol.

Hybrid, methanol is a woody alcohol that also acts as a catalyst for chemical reactions. Subsequently, a machine mixes all the materials evenly and heats and pressurizes them at the same time. The chemistry in this process produces a harmless by-product, glycerin.

It is a common ingredient in soaps as well as cosmetics.

Clause. 3. During the refining process, the refinery will remove most of the methanol to minimize the methanol content of the finished biodiesel. To ensure that the refined diesel meets international standards, the refinery's quality control laboratory tests the samples in each refinement.

In the flammability test, the quality inspector.

Heat the biodiesel to 135 degrees Celsius.

Then put it under a flame and observe if the gas released by the biodiesel will catch fire. If it catches fire, then the remaining methanol from the diesel must be removed to improve the safety of biodiesel. If there is no fire, it means that the batch of biodiesel meets international standards and can be used at the gas station.

Biodiesel is much higher than ordinary diesel**, but it has good environmental performance and combustibility, and its release of carcinogens is more than 85% less than that of ordinary diesel.

First it is filtered, then a little pigment and alcohol are added, and then it is refined. No, it needs to be filtered first.

The extraction of biodiesel from gutter oil generally needs to be pretreated with water removal, mechanical impurity removal, acid removal, decolorization, etc., and then prepared into biodiesel by transesterification or hydrocracking. It is extracted by evaporating the water in the oil before filtration.

It is to filter the gutter oil through a filtration device first, add a little pigment and alcohol, and then refine it. That's true.

There are two chemical reactions of oils and fats: (under the premise of catalyst) 1. Fatty acids react with methanol to produce biodiesel and water: that is, esterification reaction 2. Glycerides react with methanol to produce biodiesel and glycerin

That is, transesterification reaction, also called alcohololysis reaction. With the rapid development of the economy, the catering industry is becoming more and more developed, which leads to the continuous increase of kitchen waste oil, and these large quantities of catering waste oil cause serious environmental pollution. There are also a small number of unscrupulous practitioners who refine and mix waste oil or even disguise it as edible oil, which is returned to restaurants and edible oil markets, seriously endangering people's health.

So how did the gutter oil, which people know so much, turn into green energy and enter the gas station? We know that the main pollutants in catering wastewater are organic matter such as grease, dietary fiber, starch, various condiments, detergents and proteins, and at the same time, due to the complexity of dining personnel, there is also the problem of pathogenic bacterial pollution. If it is discharged directly into the river or into the municipal sewage pipeline, it will seriously pollute the environment, and the grease is easy to condense on the inner wall of the municipal pipeline, reducing the water passing capacity and even blocking.

Therefore, it must be treated and meet the national discharge standards before it can be discharged into the urban pipe network or other water bodies. The Fuklin environmental protection integrated closed oil trap has the functions of slag removal, oil removal and sewage lifting, which can effectively reduce the grease in catering wastewater. The separated grease, i.e. gutter oil, is handed over to a professional unit for disposal.

Gutter oil can be converted into biodiesel (fatty acid methyl ester or ethyl ester) through esterification and transesterification reactions, and the main components of petroleum diesel are esters and hydrocarbons. The converted biodiesel is very similar to petroleum diesel, but it is more environmentally friendly and affordable. The use of biodiesel as a vehicle fuel can reduce CO2 and carbon dioxide emissions by 80% and sulfur oxide emissions by 100%.

Waste oil can be converted into biodiesel through esterification and transesterification.

In order to improve the production efficiency of diesel, enzyme immobilization technology is adopted, and methanol is added in stages during the reaction process, which is more conducive to improving the production efficiency of diesel. This immobilized enzyme (lipase) is derived from a type of candida yeast (candidaantaretica) and is made into a reaction column with a carrier for diesel production, with a controlled temperature of 30 °C and a conversion rate of 95%.

Gutter oil is a very poor quality, extremely unhygienic non-edible oil, often cloudy black-brown in color and has a sour rancid odor. It generally refers to all kinds of inferior oil in life, such as the best edible oil, repeated frying oil, etc. The largest amount of gutter oil is the grease trap of the sewer of large hotels in the city.

Biodiesel is a relatively clean synthetic spring oil, which is commonly used in tractors, trucks, ships, etc. It refers to the renewable diesel fuel made from oil crops such as soybean, rapeseed, cotton, palm, etc., aquatic vegetable oils and fats such as wild oil plants and engineered microalgae, as well as animal fats and catering waste oils, etc., which can replace petrochemical diesel through transesterification or thermochemical processes.

I'm waiting for the plane, I'll tell you about it, biodiesel investment may be a lot of people want to know, because you don't have a fixed output, so my answer is not very specific! To give you an example, if you produce 10 tons of biodiesel per day, the process is pretreatment, esterification, transesterification, alcohol collection, distillation, and finished product. The final yield is 85% biodiesel, 10% plant clearing, and finally 5% of the components.

The main purpose of pretreatment is to remove the moisture and impurities in the gutter oil, such as leftovers, leftovers, and excess soil, etc., a step is very important, it will affect your subsequent processing, and the investment here requires more than 80,000 yuan.

The core part of esterified biodiesel, whether the grease can be turned into diesel depends on this step, the main purpose of esterification is to convert the fatty acids in the gutter oil into fatty acid methyl ester, that is, (biodiesel). For example, 100 acid value gutter oil. This step is equivalent to 50% of the waste oil being converted into biodiesel.

It is also about to enter the next step with 50%, and the investment in this step is about 250,000.

Transesterification is also a very important step like esterification, which is mainly to turn neutral oil into fatty acid methyl ester, which is the other 50% of the gutter oil I mentioned above into fatty acid methyl ester. This step is also very important, and it is also the core part of biodiesel The specific amount of alkali added so far has not been mastered by too many people, and the equipment investment in this step is about 100,000.

Excess methanol is required in the process of esterification and transesterification, so this step is to purify these methanol ** and then achieve the purpose of recycling, in this step is a methanol tower The money is estimated at about 200,000.

The work on the distillation is done, then your biodiesel crude ester will come out, which is said to be 60% successful, this step is to deodorize and distill these crude methyl esters, the two main equipment, deodorization tower, distillation tower, and supporting vacuum facilities, heat conduction oil furnace, etc., these are estimated to be about 500,000 If you don't use the deodorization tower, you can do it, but the taste is slightly larger, you can replace it with flash steam, then the investment is about 350,000.

In the public works that are to be said, such as grease traps, grease traps, circulating pools, carburetors, transformers, as well as plant steel structures, pipelines, valves, instruments, tank farms, power distribution power pumps, etc., it is estimated that these investments will be added by 800,000 yuan!

These are real money spent, I have built a lot of factories, these are necessary, if someone dares to say that he is tens of thousands or hundreds of thousands of dollars in or hundreds of thousands of dollars to build a biodiesel plant, I think it is an unreliable workshop! At present, the state has a strong crackdown on gutter oil, if you want to build a factory, I hope you will first go through the formalities, do a good job, if the continuous production of biodiesel profits are still considerable, you are afraid of production stoppage. Finally, you are doing the math yourself, good luck!

1. The investment in gutter oil refining biodiesel is determined according to the scale of production and the process selected for production. However, a small-scale investment of 10 tons per day, and an annual output of 3,000 tons is about 2 million, excluding factory costs.

I suggest that you have to produce at least 20 tons per day and 6,000 tons per year, if the collection of raw materials is not a problem, the utilization rate of equipment and production costs of such a scale are cost-effective. The annual output is 6,000 tons, and the investment is about 5 million.

2. Conversion rate problem: the raw material water mixture is less than 3, one ton of raw material can be converted into about tons of biodiesel, about tons of methyl ester plant asphalt, and some pre-distillate is about low-carbon.

With a daily output of 10 tons and an investment of more than 500,000, the conversion rate is about 75-80%.

Waste oil can be converted into biodiesel through esterification and transesterification.

Gutter oil generally refers to all kinds of inferior oil that exist in life, such as first-class edible oil, repeated frying oil, etc. The largest amount of gutter oil is the grease trap of the sewer of large hotels in the city.

Long-term consumption may cause cancer, which is extremely harmful to the human body. In July 2010, the General Office issued a document and decided to organize and carry out the pilot work of resource utilization and harmless treatment of urban kitchen waste such as gutter oil.

Biodiesel refers to the fatty acid methyl ester or ethyl ester formed by the ester conversion of vegetable oil, waste oil or microbial oil and methanol or ethanol. Biodiesel is a typical "green energy", with good environmental performance, good engine starting performance, good fuel performance, wide range of raw materials, renewable and other characteristics.

Vigorously developing biodiesel is of great strategic significance for sustainable economic development, promoting energy substitution, reducing environmental pressure, and controlling urban air pollution.

Chinese scientists have succeeded in turning gutter oil into diesel, which is of better quality than ordinary diesel.

Mainly through transesterification, under the catalysis of acids, bases or enzymes, gutter oil (fatty acid glycerides) is reacted with excess methanol or ethanol to form fatty acid methyl esters or fatty acid ethyl esters, that is, biodiesel. Glycerin is a by-product.

Conversion of gutter oil into fatty acid methyl ester (biodiesel) by esterification and transesterification

Now, there is a very mature process of making biodiesel from gutter oil, and there is a representative at the two sessions just after some time ago, and he is very concerned about this, I heard the news that he has been concerned about making biodiesel from gutter oil for more than ten years, and the brother upstairs answered very well, this project is a very good project with multiple stones.