Is tar the same as asphalt There are those that belong to tar asphalt

It's not the same. Tar, also known as coal paste, is a black or black-brown viscous liquid obtained in the process of coal dry distillation, which has a special odor, is flammable and corrosive. It is a complex mixture of hydrocarbons with a high aromatic content.

Bitumen is a complex mixture of black-brown hydrocarbons and their non-metallic derivatives of different molecular weights, which is in a liquid, semi-solid or solid state, and is an organic cementitious material that is waterproof, moisture-proof and anti-corrosion.

It seems to be a by-product of oil.

Answer]: b, c, d

Asphalt materials are divided into two categories: natural asphalt and petroleum asphalt (natural asphalt, petroleum asphalt) and tar asphalt (coal asphalt, wood asphalt, shale asphalt).

Summary. Hello, dear, I'm glad to answer for you, green oil is not asphalt. These are two substances altogether, with different compositions and different properties, so they are not one substance.

Hello, dear, I'm glad to answer for you, green oil is not asphalt. These are two substances altogether, with different compositions and different properties, so they are not one substance.

Can clear oil cause poisoning.

Clear oil refers to the use of varnish to treat the surface of furniture, retain the texture of the original finish, the usual practice is, punching under the wooden wedge, joinery anti-substrate, exterior veneer, grinding and brushing varnish, the clear oil process is also a process with paint, called polyester varnish.

Long-term exposure to clear oil can cause poisoning.

What are the symptoms of poisoning.

Bitumen is a complex mixture of black-brown hydrocarbons and their non-metallic derivatives of different molecular weights, which is a kind of high-viscosity organic liquid, mostly in the form of liquid or semi-solid petroleum, with a black surface and soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic cementitious material that is waterproof, moisture-proof and anti-corrosion. Asphalt can be mainly divided into three types: coal coke asphalt, petroleum asphalt and natural asphalt

Among them, coal coke asphalt is a by-product of coking. Petroleum bitumen is the residue after distillation. Natural bitumen is stored underground, and some form layers or accumulate on the surface of the earth's crust.

Asphalt is mainly used in coatings, plastics, rubber and other industries, as well as paving roads.

Clear oil poisoning can cause chest tightness, shortness of breath, palpitations, precordial discomfort, accompanied by tachycardia, arrhythmia and other conditions.

Coal tar bitumen is a residue, which is the residue left over after the distillation of coal tar. Coal tar asphalt, also known as asphalt, is black solid at room temperature and generally has no fixed melting point. As long as the temperature rises, it softens somewhat, and as the temperature continues to rise, it melts.

Uses of Coal Tar Bitumen: This residue is left behind because it has many uses. First of all, coal tar asphalt is an important material for paving the road surface.

We now use coal tar asphalt in road construction. Secondly, another important aspect of coal tar asphalt is the manufacture of coatings. Many coatings are made using coal tar pitch.

In addition, coal tar asphalt also has the role of manufacturing electrodes, linoleum and other celebrations.

Summary. Coal coke bitumen is not a refined oil. Coal tar bitumen is a mixture, mainly composed of coal tar, bitumen oil and paraffin, of which coal tar and bitumen oil belong to **, and paraffin belongs to petroleum products, so coal tar bitumen does not belong to refined oil.

Solution: 1. First of all, it is necessary to know the composition of coal coke asphalt and determine whether it belongs to refined oil; 2. Secondly, it is necessary to understand the definition of refined oil, whether coal coke asphalt meets the definition of refined oil; 3. Finally, it is necessary to be familiar with the production process of coal coke asphalt to determine whether it belongs to refined oil. The above are the practical steps to determine whether coal coke asphalt belongs to refined oil, and only after careful analysis can we accurately determine whether coal coke asphalt belongs to refined oil.

Coal coke bitumen is not a refined oil. Coal tar asphalt is a mixture, mainly composed of coal tar, asphalt oil and paraffin, of which coal tar and asphalt oil belong to **, and paraffin belongs to petroleum products, so coal tar asphalt does not belong to the refined oil. Workaround:

1. First of all, it is necessary to know the composition of coal coke asphalt and determine whether it belongs to refined oil; 2. To understand the definition of refined oil and whether coal coke asphalt meets the definition of refined oil; 3. Finally, Bi Luo Liang should be familiar with the production process of coal coke asphalt to determine whether it belongs to refined oil. The above are the practical steps to determine whether coal coke asphalt belongs to refined oil, and only after careful analysis can we accurately determine whether coal coke asphalt belongs to refined oil.

Can you add, I don't quite understand it.

Coal coke bitumen is not a refined oil. Coal tar asphalt is a mixture, mainly composed of coal tar, bitumen limb and paraffin, of which coal tar is decomposed by coal pyrolysis, asphalt oil is decomposed from asphalt pyrolysis, and paraffin is decomposed by petroleum pyrolysis. Coal tar bitumen is a mixture that has the properties of coal tar, bituminous oil, and paraffin, but is not a refined oil.

Coal coke asphalt is mainly used to make diesel, gasoline, lubricating oil, grease, etc., and can also be used to make coatings, asphalt concrete, asphalt asphalt oil, etc. Coal coke asphalt has good oxidation resistance, which can effectively inhibit the oxidation reaction of the fuel and prolong the service life of the fuel. In addition, coal coke asphalt also has good anti-wear properties, which can effectively inhibit the decay and wear of the fuel and prolong the service life of the fuel.

Coal coke asphalt is an important raw material, which can be used to make diesel, gasoline, lubricating oil, grease, etc., but it does not belong to refined oil. It has good antioxidation and anti-wear properties, which can effectively inhibit the oxidation reaction and wear of the fuel and prolong the service life of the fuel.

First of all, petroleum coke and bitumen are not the same thing. The two have the following differences1Petroleum coke is the coke made from petroleum, asphalt is divided into petroleum asphalt and tar asphalt, tar asphalt to be reprocessed into the reduction material of the aluminum products industry, petroleum asphalt can pave the road.

2.Petroleum coke is coke, and petroleum coke is produced by delayed coking of asphalt.

3.Petroleum coke is generally a solid formed from a delayed coking unit; Asphalt is a kind of petroleum asphalt (containing some light components, liquid at high temperature) generated by the vacuum tower, and is a recombinant substance in petroleum.

4.Asphalt is directly extracted from the bottom of the pressure reducing tower and mixed with catalytic oil slurry to produce road asphalt; There is also a kind of vacuum residue oil that is removed from the deasphalt oil through the solvent deasphalting device, that is, it is removed after the catalytic raw material; The third is that there are natural asphalt mines, which are directly mined.

So bitumen can produce petroleum coke. The two are not the same thing.

Bitumen is a complex black-brown mixture of hydrocarbons of different molecular weights and their non-metallic derivatives, which is a kind of high-viscosity organic liquid, which is liquid and has a black surface and is soluble in carbon disulfide.

Uses of bitumen:

The main use is as infrastructure materials, raw materials and fuels, such as transportation (roads, railways, aviation, etc.), construction, agriculture, water conservancy engineering, industry (mining, manufacturing), civil and other sectors.

Introduction: Categories of asphalt:

1. Coal coke asphalt.

Coal coke bitumen is a by-product of coking, i.e. a black substance that remains in the distillation kettle after tar has been distilled. It is only different from refined tar in physical properties, there is no obvious boundary, the general division method is to stipulate that the softening point below 26 7 (cube method) is tar, and above 26 7 is asphalt. Coal coke asphalt mainly contains anthracene, phenanthrene, pyrene, etc., which are difficult to volatilize.

These substances are toxic, and the properties of coke bitumen vary depending on the content of these components. The change of temperature has a great influence on the coal coke asphalt, which is easy to brittle in winter and easy to soften in summer. It has a special smell when heated; After heating to 260 for 5 hours, the anthracene, phenanthrene, pyrene and other components contained in it will volatilize.

2. Petroleum asphalt.

Petroleum bitumen is the residue after distillation. Depending on the degree of refining, it is formed into a liquid, semi-solid or solid at room temperature. Petroleum asphalt is black and shiny in color and has high temperature sensitivity.

Because it has been distilled to more than 400 degrees in the production process, it contains very few volatile components, but there may still be polymer hydrocarbons that have not volatilized, and these substances are more or less harmful to human health.

3. Natural asphalt.

Natural bitumen is stored underground, either to form layers or to accumulate on the surface of the earth's crust. Most of this asphalt has been naturally evaporated and oxidized, and generally does not contain any toxins.

Asphalt materials are divided into two categories: ground asphalt and tar asphalt. Ground asphalt is divided into natural asphalt and petroleum asphalt, natural asphalt is the residue of oil seeping out of the surface after long-term exposure and evaporation; Petroleum bitumen is a product obtained by refining and processing petroleum residue oil after appropriate process treatment. Tar asphalt is a product of reprocessed tar obtained by dry distillation of organic matter such as coal and wood.

The vast majority of the asphalt used in the project is petroleum asphalt, which is a mixture of complex hydrocarbons and their non-metallic derivatives. Usually the flash point of asphalt is between 240 330, and the ignition point is about 3 6 degrees higher than the flash point, so the construction temperature should be controlled below the flash point.