Nitrated coal tar alcohol-containing fuel and preparation method thereof

Abstract

The invention relates to the technical field of fuel oil, and in particular relates to a nitrated coal tar alcohol-containing fuel and a preparation method thereof. By proportioning raw oil, a catalyst, a nitric acid solution, an alcohol and urea, combining process parameters in process steps and controlling the adding sequence and time of various raw materials, the performance of raw oil can be accurately modified, then the kinematic viscosity of oil, the water mass percentage and the content of alcohol substances are improved, and the performance of the raw oil is further improved; and moreover, compared with pure alcohol and the conventional alcohol-containing fuels, the nitrated coal tar alcohol-containing fuel provided by the invention has superior kinematic viscosity, is lower in water content and less in smoke dust discharge after burning, and can be completely burnt to a greater extent, the combustion value of the fuel is improved, and the consumption of energy sources is reduced.

Description

technical field [0001] The invention relates to the technical field of fuel oil, in particular to a nitrated coal tar alcohol-containing fuel and a preparation method thereof. Background technique [0002] Coal tar is divided into two categories: high temperature tar and medium and low temperature tar. Those skilled in the art know that coal tar and its pre-processed series products have a theoretical combustion calorific value that is 10-20% lower than that of gasoline and diesel oil. In practical applications, due to the poor combustion conditions, the actual calorific value released is greatly reduced, and some people have made research on this. That is, the method of hydrogenation reduction is used to reduce the large molecule of coal tar into low molecular oil, thereby improving the quality of coal tar to a large extent, increasing the combustion calorific value of coal tar, and enabling coal tar to be burned Full combustion reduces the waste of energy; however, due t...

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Problems solved by technology

That is, the method of hydrogenation reduction is used to reduce the large molecule of coal tar into low molecular oil, thereby improving the quality of coal tar to a large extent, increasing the combustion calorific value of coal tar, and enabling coal tar to be burned Full combustion reduces the waste of energy; however, due to the harsh conditions of the hydrogenation process and the huge investment in equipment, it is difficult to process a large amount of tar stored in the country; it also makes the processing cost of coal tar relatively high, so most of them directly use coal tar. The primary processing products of tar and coal tar series products are used for combustion applications, and this kind of direct combustion application is difficult to achieve complete combustion, resulting in a large amount of energy waste; , the water body is seriously polluted; and in the process of direct combustion, a large amount of smoke and dust will be discharged, which will cause the heat transfer intensity of the water-cooled wall tube in the combustion furnace and the carbon on the outer surface of the economizer to decrease

In the current prior art, in addition to hydrogenation reduction, there is also an oxygenation method, but there are also relatively harsh conditions for the oxygenation treatment method, mainly using nitration treatment and grafting nitro in coal tar. Among the complex compounds in the process, this process needs to know whether the components in the coal tar can undergo grafting reaction with the nitro group, and then needs to accurately control the technical parameters of the chemical reaction and the time of adding the raw materials, which further improves the control of the coal tar. The difficulty of processing increases the cost of coal tar processing; at the same time, the degree of complete combustion of the obtained fuel is still not high, which will still cause a large amount of smoke and dust emissions, resulting in the loss and waste of raw material energy