Iran bitumen

,Performance grade bitumen (PG) is bitumen that is graded based on performance at different temperatures. LTPP has developed a specific algorithm for calculating asphalt temperature based on the respective air temperature. With this algorithm, the maximum and minimum temperature of asphalt is calculated and the best bitumen that works at this temperature is selected.

 

Functional Classification Bitumens (PG)

In this method, bitumen is classified based on performance characteristics in different environmental conditions. The profile is defined to limit the potential for permanent bitumen change and failure due to fatigue and cracking at low temperatures.

 

Types of bitumen in terms of electric charge:

Decreased thermal sensitivity

Increase elasticity

Increasing the service range in terms of temperature

Increased stress resistance

Increase user life

Reduce road damage

 

Functional classification for bitumen selection has been developed by SHRP. In this classification, which is based on recognizing the behavior of bitumen and its functional characteristics, with the characteristics of resistance to deformation, resistance to cracking due to cold, resistance to cracking due to fatigue, prediction of how hard bitumen in Asphalt plant and when preparing the asphalt mixture, how the bitumen hardens over time and with the tests specified in the specifications, and the appropriate bitumen according to the temperature of the project site, traffic, loading speed and Geographical location is selected.

 

Each type of bitumen is characterized by two positive and negative numbers, the positive number is related to the average of seven consecutive days with the highest pavement temperature and the negative number is the minimum pavement temperature in degrees Celsius.

 

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Iranbitumen product in iran

Cold bitumen is a new material of bitumen and is used for insulation of air conditioner floors and bathrooms, asphalt or isogum sealing, pool or wall sealing, basement and wet walls for insulation and is one of the characteristics of soluble cold bitumen. It is in water and does not need heat. Emulsion bitumen or bitumen is obtained by mixing bitumen, water and emulsion materials in the refinery. As can be seen from the chemical properties of bitumen and water, these two substances do not mix under normal conditions and are separated due to different densities. Emulsifiers form a solution of the two dispersed together.

 

 

Advantages of cold bitumen product:

 

Water based and environmentally friendly

 

No need for heating

 

unflamable

 

High speed in execution

 

Seamless and seamless

 

UV and resistant

 

Cold bitumen uses:

 

Infrastructure and sealing of pools and tanks

 

On the floor before tile or ceramic

 

Building foundation and building pit

 

On different surfaces such as Iranite, brick, plaster, cement and…

 

Create a protective layer against steam and…

 

Waterproofing is a material used to prevent water and moisture from penetrating buildings. Bitumen is one of the waterproofing materials that is widely used in industry and construction. Bitumen must be liquefied when used in various applications. There are 3 methods to convert bitumen from high viscosity to a low viscosity fluid. : Heating bitumen, dissolving it in a solvent, emulsifying it.

 

 

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Bitumen refinery

Bitumen refinery processes

 

In an oil refinery, processed crude oil is divided into different cuts based on their boiling range. In atmospheric distillation, which is the first stage of this continuous process, crude oil is heated to 300 to 350 degrees Celsius and the more volatile components are heated. Gasoline and kerosene are distilled. This material leaves a residue called the atmospheric residue, which is mostly discharged under a vacuum.

The actual residual processing temperature is 350 to 390 ° C, but due to the vacuum applied, the most effective distillation cut-off point is 500 to 560 ° C. This vacuum distillation process produces more volatiles known as vacuum distillates, leaving a very non-greasy residue of high viscosity called a vacuum residue.

Depending on the origin of the crude oil, vacuum residues are used directly as bitumen without further processing. However, for some crude oils or to create special specifications, additional processing may be required, such as blowing gentle air from the residue. The air blowing process requires careful selection and control of process temperature, air velocity and residence time to ensure a stable product. Bitumens are sometimes produced by mixing vacuum residues with asphaltene from lubricating oils. For example, when producing lubricating oils in the same refinery, propane (PPA) sedimentary asphalt is commonly used in the manufacture of bitumen.

The choice of crude oil is an important aspect of bitumen production that requires expertise and experience to obtain a satisfactory product - it can not be used to produce all crude oil.

Bitumen A small number of approximately 1,500 crude oils available are suitable for the production of quality bitumen. In Australia, very few crude oils are able to produce bitumen by current Australian standards.

Cut bitumens are produced by diluting the paving grade bitumen with cutting or flux. Bitumen emulsions are made by dispersing asphalt grade bitumen in water with the help of emulsifier in a colloidal mill.

For industrial bitumen, it is necessary to blow hard air to produce a material that softens at temperatures above the level of the asphalt level with equivalent penetration. Therefore, this product is known as "air bitumen" or "oxidized". Typically, blower gas raw materials have a lower initial boiling point than paved surface asphalts. This process, along with intense blowing, imparts certain physical properties to industrial bitumen.

The production of high quality bitumen relies on a combination of modern refinery skills, experience and technology. These items are widely used to ensure the adequacy of feed sources and to monitor and control all stages of the process.

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Iran bitumen

Asphalt

 

Asphalt, natural screw, mineral fiber, or even bitumen are sticky, black and liquid or semi-solid petroleum. Asphalt can be classified as a screw. Asphalt is a mixture of alumina, lime, silica and bitumen. Asphalt is classified into two types: natural asphalt and sedimentary asphalt

 

Natural asphalt

 

As the name implies, natural asphalt is obtained mainly from nature and from lakes and rocks.

 

Asphalt lake

 

Lake asphalt contains 40 to 70% pure bitumen, which is boiled and refined in a tank. The output is refined asphalt used in road construction and industry.

 

Asphalt stone

 

Rock asphalt contains 10 to 15% of pure bitumen and calcareous material. The rocks are crushed and heated and then stabilized by sudden cooling. Extracted asphalt is used for paving tiles, etc.

 

Asphalt settles

 

Sedimentary asphalt is made by extracting crude oil with an asphalt base

 

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Bitumen product in iran

Making bitumen emulsions

Today, two methods for preparing bitumen emulsions are common in road construction, which are:

1- Continuous method

2- Modular method

The main difference between these two methods is that in the preparation of bitumen emulsion by continuous method, bitumen phase and aqueous phase are instantly prepared and injected into the production system. If in the modular method, the aqueous phase is prepared separately in two modules or the bitumen phase is mixed instantly in a colloidal mill. In the bitumen emulsion production process, the emulsion solution and bitumen are passed through the mill to make the emulsion. The pumps introduce the emulsion solution of bitumen into the mill. Emulsion solution consists of water, emulsion, acid and, if necessary, stabilizer, which are mixed carefully and in appropriate proportions to obtain a uniform solution with the desired degree of acidity. The bitumen used can be pure bitumen or bitumen mixed with an oil solvent such as kerosene or diesel or vegetable oils. The emulsion is removed from the hot mill. Therefore, before transferring to the storage tank, it must be entered into heat exchangers to reach the appropriate temperature and then enter the storage tank.

 

The emulsion temperature during manufacture should never exceed 100 ° C and should be kept between 85 and 95 ° C. In order to avoid local temperature rise, the temperature difference between the bitumen and the emulsion solution should be as small as possible. The bitumen must be hot enough to be pumped. For emulsions with 60% bitumen, the set temperature of the two phases should be considered around 195 ° C and the temperature of the emulsion at the outlet of the mill should be around 90 ° C. Before producing bitumen emulsion, a suitable formula should be selected to make it according to the application and related properties and relevant standards.

 

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iran bitumen

Application of bitumen in industry

 

 Aluminum foil compounds using bitumen

 

1) Izogam

 

2) Insulated water ducts, laminate

 

3) Insulation boards

 

4) Painting compositions

 

5) ورق‌ها

 

6) Tube wrapper

 

7) For roofing, shingles

 

1) Surface coating

2) Infiltrative macadam

3) Cold machine mixes

4) Sealing with suspended mixture

5) Surface coating

6) Reinforced coating

7) Soil consolidation

8) Address dust

 

Oil petroleum

 

Different methods of using mulches:

1) Stabilization of quicksand

2) Protection of airports and facilities

3) Construction mulches

4) Agricultural mulches

5) Production of artificial rain

6) Road and iron mulches

 

Uses of bitumen as bitumen coatings for protection of internal and external surfaces of concrete sewer pipes

 

Use of bitumen in polymer-modified waterproofing

 

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Bitumen_product_in_iran

Cold bitumen

 

Bit Bitoplast FRE bitumen insulation Asphalt protective coating:

 

 Bitoplast FRE solvent protective coating is a two-component polymer product that Bitoplast coating has excellent resistance against fuels and petroleum products and has a high adhesion to concrete and asphalt surfaces.

 

 

Bitoplast coating increases the life of asphalt and reduces its maintenance costs, and as a result is the most important factor of economic savings. Bitoplast emulsion strengthens and protects the asphalt, concrete cover and is not toxic or flammable.

 

Uses of Bitoplast bitumen insulation:

 

Covering surfaces exposed to petroleum products.

 

Concrete and asphalt surfaces of airports.

 

Oil, gas, petrochemical industries, parking lots, repair shops, gas stations.

 

Industrial plants, etc., which are exposed to oil, gasoline and diesel pollution.

 

Insulation of oil tanks.

 

Flight levels, airports, especially in the area of ​​stopping and repairing flight equipment.

 

 

 

Advantages of Bitoplast Coating:

 

Excellent resistance to fuels and petroleum products.

 

Resistant to weather and sea water.

 

Excellent adhesion on all surfaces.

 

Quick and easy implementation.

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Bitumen_refinery

The difference between the old refining system and the new system

 

In the new refining process, in order to reduce the production cost and increase the refining speed and reduce the cost price of the final product, in the refining process, instead of using traditional bach wise methods, the continuos method is used.

 

In this process, due to the use of composite towers, all feeds available in the market such as fuel oil, vacuum baton, slabs and other feeds can be used. These production units have the ability to produce any type of bitumen and are dedicated to the production and consumption of feed. And they are not special bitumen.

 

In the new refining process, due to the design and installation of explosion-proof valves, the risk of explosion and fire will be eliminated.

 

In the old process, the bitumen firing tower needed to absorb a lot of energy to refine and raise its temperature, which was produced by spraying fuel in the central pipe of the tower with high heat and for a long time.

 This method first consumes a lot of fuel and causes a large amount of carbon dioxide, carbon monoxide and other environmental pollutants. In this method, the cost of energy consumption for production is very high, but in the new refining process to produce the heat required by the tower, this energy is not needed and it uses the heat of chemical reactions to raise the temperature and refine the bitumen.

 In the units that work in the old way, basically no bitumen is produced in the cooking tower, but only the initial feed condensation operation is done. Unfortunately, the product made from this incorrect method of bitumen production is exposed to weak UV rays of the sun. is .

 

In the old refining process, vapors and aromatic compounds from the charcoal production process due to direct heat in the tanks and its reaction with oxygen cause the production of sulfur gas and are spread in the ambient air. But in the design of the new process, this defect has been eliminated.

 

In previous processes, the aeration system of the tower, due to the lack of calculation of air pressure, did not give any data to the person in charge of bitumen firing and the person in charge is unaware of the situation inside the tower, except for the temperature inside.

 

 

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