Why can t coal to liquid be called diesel?

Coal-to-liquids (CTL) is a technology that uses coal as raw material to produce oil and petrochemical products through chemical processing, including direct coal liquefaction and coal indirect liquefaction.

Direct liquefaction of coal directly liquefies coal into liquid hydrocarbons by catalytic hydrogenation under high temperature and high pressure conditions.

fuel, and remove sulfur, nitrogen, oxygen and other atoms. It has poor adaptability to the type of coal, harsh reaction and operating conditions, and produces aromatic hydrocarbons for fuel.

High content of impurities such as sulfur and nitrogen, low cetane number, it is difficult to burn directly on the engine.

Diesel is a light petroleum product, a mixture of complex hydrocarbons (the number of carbon atoms is about 10 22). Diesel fuel. Mainly made of**.

It is made of diesel fractions produced by distillation, catalytic cracking, thermal cracking, hydrocracking, petroleum coking and other processes; Also made from shale oil.

Processing and coal liquefaction production. It is divided into two categories: light diesel oil (boiling point range of about 180 370) and heavy diesel oil (boiling point range of about 350 410).

It is mainly blended from diesel fractions produced by distillation, catalytic cracking, thermal cracking, hydrocracking, petroleum coking and other processes (it also needs to be refined and additives added); It is prepared from **, shale oil, etc. through processes such as straight distillation or cracking. Depending on the nature of the **, there is paraffin.

Base diesel, naphthenic diesel, naphthenic-aromatic based diesel, etc.

Kerosene. The boiling point range is 180 310, which is mainly used for lighting and cooking. The flame is required to be stable and bright without black smoke. At present, the production is not large.

There are two types of diesel boiling points: 180 370 and 350 410. For petroleum and its processed products, it is customary to call the boiling point or boiling point range low light, and vice versa. Therefore, the former is called light diesel oil, and the latter is called heavy diesel oil.

The diesel fuel of coal-to-liquid is mainly straight-chain alkanes, with high cetane number and basically no aromatic hydrocarbons, and the disadvantage is that the density is not up to standard (low).

There are generally three types of desiccant:1. The main component of quicklime desiccant is calcium oxide, and its water absorption ability is achieved through chemical reaction, so water absorption is irreversible.

Coal diesel is diesel oil refined from coal, and diesel is diesel oil refined from petroleum.

Coal diesel is mainly extracted from medium-temperature coal tar through a fractionation device. At present, it is mainly distributed in Xinjiang, northern Shaanxi, Inner Mongolia, Liaoning, Shanxi, Hebei, Shandong and other regions. Coal diesel is a kind of fuel oil, which can also be used as a raw oil for some oil products.

Diesel is a light petroleum product, a mixture of complex hydrocarbons (the number of carbon atoms is about 10 22). Diesel fuel. It is mainly blended from diesel fractions produced in ** distillation, catalytic cracking, thermal cracking, hydrocracking, petroleum coking and other processes.

It can also be produced from shale oil processing and coal liquefaction. It is divided into two categories: light diesel oil (boiling point range of about 180 370) and heavy diesel oil (boiling point range of about 350 410). It is widely used in large vehicles, railway locomotives, and ships.

The most important use of diesel is in diesel engines for vehicles and ships. Compared with gasoline, diesel has a high energy density and a low fuel consumption rate, but the exhaust gas contains more harmful components (NO, particulate matter, etc.).

It can be used as an alternative fuel to diesel.

Compared with petroleum diesel, coal direct liquefied diesel has a similar composition and similar properties, and its combustion performance, dynamic emission performance and adaptability to automobiles are similar to petroleum-based diesel, and can be directly applied to automobiles or engines without any modification. Coal direct liquefied diesel is an ideal alternative to petroleum-based diesel in the future.

In 2011, Shenhua Coal-to-Liquids Chemical Co., Ltd. commissioned Shanghai Jiao Tong University and Tianjin University to conduct the "Experimental Research on Coal-based Diesel Engine Bench" on the coal-based direct liquefied diesel produced by the company, and commissioned the China Automotive Technology and Research Center and China FAW Group Corporation to carry out the "Coal-based Diesel Light Vehicle and Commercial Vehicle Engine Durability Research".

The conclusion of the research report is that compared with petroleum-based diesel that meets the emission regulations of China III, the power performance and fuel economy performance of coal direct liquefied diesel are improved. There is a significant reduction in particulate matter and fuel consumption. With the addition of an improver, direct liquefied diesel from coal can achieve similar emission performance to diesel, with the same degree of deterioration as the mileage increases.

Introduction: Coal-to-liquids (CTL) is a technology that uses coal as raw material to produce oil products and petrochemical products through chemical processing, including direct coal liquefaction and coal indirect liquefaction. Direct liquefaction of coal directly liquefies coal into liquid hydrocarbon fuels through catalytic hydrogenation under high temperature and high pressure conditions, and removes atoms such as sulfur, nitrogen, and oxygen.

It has the characteristics of poor adaptability to the type of coal, harsh reaction and operating conditions, high content of impurities such as aromatics, sulfur and nitrogen in the production of fuel, and low cetane number, so it is difficult to burn directly on the engine.

It's not

Diesel heater, also known as parking heater, is fueled by diesel fuel, and heats the air by burning diesel fuel to achieve the purpose of blowing warm air and humidifying the cab. Because of its low modification cost, good use experience, and low fuel consumption, diesel heating is very popular in long-distance transportation vehicles. Diesel heating oil is the fuel oil used for diesel heating.

Precautions for diesel heating oil.

Be sure to go to a regular manufacturer to buy car firewood heaters, and don't buy inferior products or dates for the sake of cheapness to prevent carbon monoxide poisoning.

happens.

The exhaust pipe of the diesel heating must be far away from the cab, and it is best to align the direction of the exhaust shirt section to the rear of the car to prevent the headwind from blowing toxic gases into the cab at night.

When using wood warmer, remember to leave a gap in the glass in the car before going to bed. In addition to the exhaust pipe, carbon monoxide must also be prevented from seeping into the car with the heating, so leaving a gap in the glass is also to minimize accidents.

What is the difference between aviation kerosene and gasoline and diesel?

The differences are: different uses, different compositions, different characteristics, different volatility, etc. Gasoline is mainly used as fuel for ignition internal combustion engines of automobiles, and diesel is mainly used in diesel engines for vehicles and ships.

Kerosene: mainly used for lighting and various blowtorches, gas lamps, gasifiers and kerosene furnace fuel; It can also be used as a detergent for mechanical parts.

Gasoline is a colorless to light yellow flowing liquid at room temperature, difficult to dissolve in water, flammable, with a distillation range of 30 to 220 and an air content of 74 123 grams of cubic meters when exposed to fire**.

Diesel has a high energy density and low fuel consumption. Diesel has low energy consumption, so some small cars and even high-performance cars have switched to diesel.

Kerosene is miscible with petroleum-based solvents. The solubility to water is very small, and kerosene containing aromatic hydrocarbons has greater solubility to water than kerosene, an aliphatic hydrocarbon. Kerosene dissolves absolute ethanol. Mixtures with alcohols stratify when water is present at low temperatures.

The difference between gasoline, diesel, kerosene, is:

1. Different uses. Gasoline is generally used in automobiles, that is, ignition engines; Diesel is generally used in diesel engines, that is, compression-ignition engines; Kerosene generally produces more aviation kerosene, which is a fuel used in jet engines, and the requirements are very high. Gasoline, kerosene, and diesel are all products of the lighter fraction (i.e., lower boiling point) in petroleum.

2. The boiling point is different. The gasoline fraction is less than 170, and the kerosene fraction is between 170 and 230; The light diesel fraction is between 230 270 and the heavy diesel fuel fraction is between 270 350. Generally, gasoline is a mixture of C4-C12 hydrocarbons, kerosene is a mixture of C12-C15 hydrocarbons, and diesel is a mixture of C10-C22 hydrocarbons.

Gasoline, kerosene, and diesel are all obtained by petroleum distillation, and the fractions of different boiling ranges are intercepted respectively.

3. The number of carbon atoms contained in alkanes is different. Gasoline, diesel, kerosene. Gasoline is mainly an alkane of 4 6 carbon atoms, which has a low flash point, is easy to burn**, has a low combustion value, and has a minimum density; Diesel is the next best, and kerosene is even worse.

Diesel, kerosene, and gasoline are all predominantly alkane compounds.

Petroleum refers to a mixture of gaseous, liquid and solid hydrocarbons with a natural occurrence. Petroleum is divided into the forms of **, natural gas, natural gas liquid and natural tar, but it is customary to use "oil" as the definition of "**".

4. Diesel: Diesel has high energy density and low fuel consumption rate. Diesel has low energy consumption, so some small cars and even high-performance cars have switched to diesel.

5. Kerosene: Kerosene is miscible with petroleum-based solvents. The solubility to water is very small, and kerosene containing aromatic hydrocarbons has greater solubility to water than kerosene, an aliphatic hydrocarbon. Kerosene dissolves absolute ethanol. Mixtures with alcohols stratify when water is present at low temperatures.