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Waste oil regeneration process and pollution
The recycling process itself also needs to pay attention to environmental pollution problems. Some regeneration unit processes are essentially free of environmental pollution, such as distillation and hydrogenation. Some regenerative unit processes will bring more or less environmental pollution, such as flocculated waste liquid, alkali washing and alkali washing waste water, and adsorbed and refined waste adsorbent. If discharged or discarded without treatment, it will also be environmentally friendly. Cause certain pollution. Some regenerative unit processes, such as sulfuric acid refining, have a greater impact on the environment, and the resulting acid slag, if discarded casually, will cause serious pollution to the environment, and the resulting sulfur dioxide gas is also harmful to living things.

In recent years, it has been starting from environmental protection and attaching importance to the waste lubricating oil recycling industry. Of course, it is not tolerable that waste oil regeneration will cause new pollution to the environment. Therefore, in recent years, some sulfuric acid refining devices have been discontinued, and a pollution-free regeneration process has been developed. Even if the refinery that still retains the sulfuric acid refinery is found, it has found a way to properly treat the acid residue so that it does not harm the environment.

The development of a new pollution-free recycling process to replace sulfuric acid refining, the most successful is to take the thin film evaporation under high vacuum and low temperature, steam the base oil fraction without any cracking, and then through the clay or hydrogenation refining, become Good quality recycled base oil.

Some large-scale waste oil refineries now use pollution-free processes. However, many large factories and many small and medium-sized factories are still using the sulfuric acid-white clay process and adopting an effective three-waste treatment method to make environmental protection acceptable. As for re-purification, since there is not much pollution problem, it can meet environmental protection requirements with a little attention.
Waste oil regeneration process and pollution
Project Construction Background

Waste oil belongs to ‘900-249-08 waste mineral oil produced in other process of production,selling and application’ in ‘National Hazardous Waste List’. Waste mineral oil refers to the waste lubricating oil that has been replaced, lost or lowered function after use of mechanical equipment in the industrial production field and transportation equipment such as automobiles and ships.

China’s waste mineral oil recycling industry began to develop in the 1960s, but the technology is backward and quality is inferior. In the late 1980s,waste mineral oil recycling industry began to develop rapidly,especially since 2000,waste mineral oil recycling enterprises’ scale and technology has improved greatly and quality is also largely improved.But,currently there are still many illegal oil refining factories nationwide who purchase waste mineral oil at high price in the market,crack down inferior gasoline and diesel through simply processing,pollute the environment badly and evade taxes.

One. Policy Background

On December 10th,2011, the National Development and Reform Commission issued the ‘Notice on printing and distributing the ‘Twelfth Five-Year’ Resources Comprehensive Utilization Guidance and the implementation plan for the comprehensive utilization of bulk solid wastes’. The notice pointed out that key industries should be encouraged to carry out recycling and resource utilization of used motor oil, oil production waste water, waste plant oil, waste acid, waste alkali, waste liquid. Waste motor oil recycling and resource utilization is the key industries that encourage development.

Two. Market Background

In recent years, the number of Chinese privacy cars is growing at a rapid rate. It is estimated that by 2020, the number of Chinese civilian vehicles will reach 140 million.Together with various vehicles, China’s ultimate car ownership will reach 250 million.

With the development of Chinese automobile industry and the increase of car ownership, more and more waste motor oil has been replaced from automobiles. So, finding an effective and low investment way to recycle the waste motor oil has not only good social benefit but also good economic benefits. Especially in today’s high oil prices, it is worthwhile for us to find and consider various recycling measures.

Three. Technology Background

In the composition of waste lubricating oil, besides 2% to 3% waste water, some waste impurities and some metamorphic materials(waste mineral oil is only about 10% to 25% of the hydrocarbons deteriorated compared with before scrapping, most of the rest hydrocarbon composition is still the main viscosity carrier of the lubricating oil. ) 90% to 98% of the rest are good components and can be completely reused. Choosing a reasonable process, specializing in the recycling of waste lubricating oil,can solve a series of problems such as difficulties in dehydration and impurities removal, difficulty in fractionation of waste lubricating oil, and a large processing unit cost.

After removing deteriorated substances and impurities in waste lubricating oil, it can be recycled to lubricating base oil that meets the quality requirement. And the recovery rate can reach more than 70%.
Collection and identification of waste engine oil
To make good use of waste engine oil, first we must collect and keep the waste engine oil. The quality of waste engine oil collection is directly related to the effect of processing regeneration and utilization. For example, if it is difficult to restore the original quality by mixing grease or gear oil in the waste gasoline engine oil, it is not suitable for recycling. Therefore, the following points should be noted when collecting used oil:
Waste oil regeneration process and pollution

Among the several methods of waste oil treatment, there are two types that are more commonly used now.

One is the production of clean liquid fuels or road oils that remove heavy metals, and the other is the production of regenerative lubricants. Both types of treatment methods can meet environmental and economic requirements.

The recycling process itself also needs to pay attention to environmental pollution problems. Some regeneration unit processes are essentially free of environmental pollution, such as distillation and hydrogenation. Some regenerative unit processes will bring more or less environmental pollution, such as flocculated waste liquid, alkali washing and alkali washing waste water, and adsorbed and refined waste adsorbent. If discharged or discarded without treatment, it will also be environmentally friendly. Cause certain pollution. Some regenerative unit processes, such as sulfuric acid refining, have a greater impact on the environment, and the resulting acid slag, if discarded casually, will cause serious pollution to the environment, and the resulting sulfur dioxide gas is also harmful to living things.

In recent years, it has been starting from environmental protection and attaching importance to the waste lubricating oil recycling industry. Of course, it is not tolerable that waste oil regeneration will cause new pollution to the environment. Therefore, in recent years, some sulfuric acid refining devices have been discontinued, and a pollution-free regeneration process has been developed. Even if the refinery that still retains the sulfuric acid refinery is found, it has found a way to properly treat the acid residue so that it does not harm the environment.

The development of a new pollution-free recycling process to replace sulfuric acid refining, the most successful is to take the thin film evaporation under high vacuum and low temperature, steam the base oil fraction without any cracking, and then through the clay or hydrogenation refining, become Good quality recycled base oil.

Some large-scale waste oil refineries now use pollution-free processes. However, many large factories and many small and medium-sized factories are still using the sulfuric acid-white clay process and adopting an effective three-waste treatment method to make environmental protection acceptable. As for re-purification, since there is not much pollution problem, it can meet environmental protection requirements with a little attentio

Collection and identification of waste engine oil

The use of waste engine oil is one of the important measures to save oil. As long as the waste engine oil is carefully collected, stored and then regenerated, the waste engine oil is fully usable.

To make good use of waste engine oil, first we must collect and keep the waste engine oil. The quality of waste engine oil collection is directly related to the effect of processing regeneration and utilization. For example, if it is difficult to restore the original quality by mixing grease or gear oil in the waste gasoline engine oil, it is not suitable for recycling. Therefore, the following points should be noted when collecting used oil:

  • The container for storing waste engine oil should be cleaned. The container should have a closed lid and gasket to prevent further oxidation or evaporation of the oil to prevent external pollution.
  • Different types of waste oil should be stored separately. Do not mix the waste oil into the following categories:

—Waste gasoline engine oil

—Waste diesel engine oil

—,(diesel, gasoline)

—Waste gear oil

—Waste grease

  • The name of the engine oil should be marked on the waste engine oil container for identification, and the waste oil drum should be stored separately from the good oil drum to avoid confusion.

(4) During the storage process, waste engine oil should not be moved as much as possible to facilitate the precipitation of moisture and debris.

(5) When storing waste engine oil, do not let the cotton yarn mix or mix the animal and vegetable oil in the oil.

(6) Fireworks shall be strictly prohibited in the place where the waste engine oil is stored, and exposure to sunlight and freezing shall be prevented to avoid a fire or further deterioration of the waste oil. Some waste engine oil can be used without regeneration. For example, the waste motor oil after precipitation can be taken up in the air filter. Clarified gasoline, kerosene, and diesel oil can be used as engine oil (oil that cannot be used as a precision instrument).

The waste oil needs to judge the availability of waste oil according to the oil environment, oil level and procedures. Good waste oil is very different from poor waste oil, and there are great skills in how to distinguish waste oil.

The basic identification of waste oil is no water. There are five major indicators that can be measured by methods such as “Four Diagnostic Methods of TCM”. The five indicators include moisture, color, impurities, density, and taste.

Moisture: The most important indicator of waste oil is to look at its water, which is what the waste oil people often say “there are several waters.” Moisture is generally caused by rain, improper operation or unsuitability of the operating environment. Usually the lower the water, the better, of course, the more expensive the price. At present, there are professional water measuring instruments in the industry. If you don’t know how to judge the moisture of the oil through common sense and experience, you can use the instrument.

When machinery and equipment are working, the oil is affected by the surrounding air, temperature, pressure, electric field, light and other factors due to long-term contact with the metal, The foreign matter is gradually added to the oil, and as a result, there are moisture, dust, sand, metal chips in the oil, and gradually oxidize in the long-term use, so that the chemical composition changes, and the deteriorated substances and harmful impurities are generated.

Collection and identification of waste engine oil


The use of waste engine oil is one of the important measures to save oil. As long as the waste engine oil is carefully collected, stored and then regenerated, the waste engine oil is fully usable.

To make good use of waste engine oil, first we must collect and keep the waste engine oil. The quality of waste engine oil collection is directly related to the effect of processing regeneration and utilization. For example, if it is difficult to restore the original quality by mixing grease or gear oil in the waste gasoline engine oil, it is not suitable for recycling. Therefore, the following points should be noted when collecting used oil:

  • The container for storing waste engine oil should be cleaned. The container should have a closed lid and gasket to prevent further oxidation or evaporation of the oil to prevent external pollution.
  • Different types of waste oil should be stored separately. Do not mix the waste oil into the following categories:

—Waste gasoline engine oil

—Waste diesel engine oil

—,(diesel, gasoline)

—Waste gear oil

—Waste grease

  • The name of the engine oil should be marked on the waste engine oil container for identification, and the waste oil drum should be stored separately from the good oil drum to avoid confusion.

(4) During the storage process, waste engine oil should not be moved as much as possible to facilitate the precipitation of moisture and debris.

(5) When storing waste engine oil, do not let the cotton yarn mix or mix the animal and vegetable oil in the oil.

(6) Fireworks shall be strictly prohibited in the place where the waste engine oil is stored, and exposure to sunlight and freezing shall be prevented to avoid a fire or further deterioration of the waste oil. Some waste engine oil can be used without regeneration. For example, the waste motor oil after precipitation can be taken up in the air filter. Clarified gasoline, kerosene, and diesel oil can be used as engine oil (oil that cannot be used as a precision instrument).

The waste oil needs to judge the availability of waste oil according to the oil environment, oil level and procedures. Good waste oil is very different from poor waste oil, and there are great skills in how to distinguish waste oil.

The basic identification of waste oil is no water. There are five major indicators that can be measured by methods such as “Four Diagnostic Methods of TCM”. The five indicators include moisture, color, impurities, density, and taste.

Moisture: The most important indicator of waste oil is to look at its water, which is what the waste oil people often say “there are several waters.” Moisture is generally caused by rain, improper operation or unsuitability of the operating environment. Usually the lower the water, the better, of course, the more expensive the price. At present, there are professional water measuring instruments in the industry. If you don’t know how to judge the moisture of the oil through common sense and experience, you can use the instrument.

When machinery and equipment are working, the oil is affected by the surrounding air, temperature, pressure, electric field, light and other factors due to long-term contact with the metal, The foreign matter is gradually added to the oil, and as a result, there are moisture, dust, sand, metal chips in the oil, and gradually oxidize in the long-term use, so that the chemical composition changes, and the deteriorated substances and harmful impurities are generated.

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