RU2076893C1 - Method of preparing environmentally pure diesel fuels in truck tanks - Google Patents

Abstract

FIELD: fuel conditioning. SUBSTANCE: invention relates to conditioning fuels in field condition and at refueling stations. Method consists in preparing concentrate of multifunctional additive composed of paraffin hydrocarbons and additive in the first section of tank, dosing additive concentrate into low-grade diesel fuel, circulating diesel fuel through the second section of tank, measuring kinematic viscosity and density of mix in the second section of tank, calculating cetane number of mix and comparing it with that of standard fuel when working on engine with standard fuel, adjusting feed of additive concentrate on mixer entry taking into account cetane number of commercial mix when working on engine with this mix, comparing this cetane number with that of standard mix, and adjusting feed of low-grade diesel fuel on mixer entry taking into account fullness of fuel combustion. EFFECT: enabled up-grading fuel in place of use. 1 dwg

Description

 The invention relates to methods for the preparation of environmentally friendly diesel fuels in the field in automobile tanks on automobile tanks at gas stations.

 A known method of regulating the ratio of costs of petroleum products, for example, in the preparation of commercial diesel fuel, by mixing high-sulfur straight-run diesel fuel with hydrotreated diesel fuel with low sulfur content and regulation of their costs (see ed. Certificate of the USSR 570029, class G 05 B 11 / 58, G 05 B 11/02, 1977).

The closest in technical essence to the proposed solution is a method for the preparation of diesel fuels by mixing individual components and regulating their costs (see ed. Certificate of the USSR 1194471, class B 01 F 3/08, G 05 D 27/00, 1985 )
This method is taken as a prototype.

 However, the known methods are implemented only at industrial sites and require large capital expenditures. In addition, engines (diesels) operating on this diesel fuel have a low resource and adversely affect the environment due to an unstable indicator of fuel quality.

 The basis of the invention is the technical task to create a method for the preparation of environmentally friendly diesel fuels in tank cars, which would improve technical and economic indicators, operational characteristics of diesel engines (engines) by stabilizing the quality of a commercial product.

 This problem is solved by the fact that in the method of preparing diesel fuels in automobile tanks by mixing the individual components and controlling their costs, a multifunctional additive concentrate is prepared from paraffin hydrocarbons and additives in the first tank compartment, the additive concentrate is dosed in low-grade diesel fuel, diesel fuel is circulated through the second compartment tanks, measure the kinematic viscosity and density of the mixture in the second compartment of the tank, calculate the cetane number of the mixture and compare with cetane If the reference diesel fuel is used when the engine (diesel) is running on the reference fuel, the flow of additive concentrate to the mixer inlet is adjusted with the cetane number of the product mixture corrected when the engine is running on the commercial diesel fuel, the latter is compared with the cetane number of the reference mixture and the low-grade diesel fuel is fed mixer input with correction for completeness of fuel combustion.

 The drawing shows a schematic diagram of a device for implementing the proposed method.

The device contains a tank 1, the first compartment of which is connected through an actuator 2 to the first input of the mixer 3, the second input of which is connected through a series-connected viscometer 4 and the density meter 5 with the output of the second compartment of the tank 1, and the output of the mixer 3 is connected to the intake pipe of the pump 6, one the output of which is connected to the second compartment of the tank 1, and the second output to the first input of the engine (diesel) 7. The second input of the engine 7 is connected to the supply line of the reference diesel fuel, its first output is connected to the sensor input 8 complete combustion (CO ₂ ), the second output with the first input of the optimizer 9, the third output with the first input of the regulator 10, the second input of which is connected to the first output of the optimizer 9, and the output with the actuator 2. The output of the sensor 8 of complete combustion is connected to the first input a regulator 11, the second input of which is connected to the second output of the optimizer 9, and the output with an actuator 12 mounted on the low-grade diesel fuel supply line to the mixer 3. The second outputs of the viscometer 4 and the density meter 5 are connected respectively to the first and torym input controller 13 and outputs them to the third, respectively the second and third inputs optimizer 9, the fourth input is connected to output controller 13.

 The method of preparation of diesel fuel is as follows.

где ν₂₀ кинематическая вязкость смеси
d $\genfrac{}{}{0ex}{}{\text{20}}{\text{4}}$ плотность смеси
Вычисленное цетановое число сравнивают с цетановым числом эталонного дизельного топлива в оптимизаторе 9, при этом двигатель работает на эталонном дизельном топливе. Выработанный сигнал с выхода оптимизатора 9 подается на вход "задание" регулятора 10, на вход "программа" которого подается корректирующий сигнал цетанового числа циркулируемой товарной смеси (товарного дизельного топлива). Регулятор 10 отрабатывает регулирующее воздействие исполнительному механизму 2, увеличивая или уменьшая подачу концентрата многофункциональной присадки на вход смеси теля 3 в зависимости от цетанового числа смеси, при этом косвенно оптимизируются депрессорные свойства смеси (температура застывания) в зависимости от вязкости.Low-grade diesel fuel is supplied through a mixer 3 to a circulation pump 6. A multifunctional additive concentrate is supplied to the second input of a mixer 3 from the first compartment of a tank 1, a pump 3 circulates the mixture through a second compartment of a tank 1, a mixer 3. The viscosity is measured with a viscometer 4 and a density meter 5 of the circulated mixture, calculate the cetane number of the mixture in the controller 13 according to the formula Cherushkova:

where ν ₂₀ kinematic viscosity of the mixture
d $\genfrac{}{}{0ex}{}{\text{twenty}}{\text{4}}$ mixture density
The calculated cetane number is compared with the cetane number of the reference diesel fuel in the optimizer 9, while the engine runs on a reference diesel fuel. The generated signal from the output of the optimizer 9 is fed to the input "task" of the controller 10, the input "program" of which is fed a correction signal of the cetane number of the circulated commodity mixture (commercial diesel fuel). The controller 10 fulfills the regulatory effect to the actuator 2, increasing or decreasing the supply of the multifunctional additive concentrate to the inlet of the mixture of the body 3 depending on the cetane number of the mixture, while the depressant properties of the mixture (solidification temperature) are indirectly optimized depending on the viscosity.

 Compare the cetane number of the commodity mixture with the cetane number of the reference mixture in the optimizer 9, while the engine runs on the prepared mixture. The generated signal from the optimizer 9 is fed to the input "task" of the controller 11, the input "program" of which is fed a correction signal from the sensor 8 completeness of combustion of the mixture. The regulator 11 fulfills the regulatory effect to the actuator 12, increasing or decreasing the supply of low-grade diesel fuel to the inlet of the mixer 3 depending on the completeness of combustion of diesel fuel, while the fractional composition is indirectly optimized depending on the density of the commodity mixture.

Claims (1)

 A method of preparing environmentally friendly diesel fuels in tank cars by mixing the individual components and controlling their costs, characterized in that a multifunctional additive concentrate is prepared from paraffin hydrocarbons and additives in the first compartment of the tank, the additive concentrate is dosed in low-grade diesel fuel, and the resulting diesel fuel is circulated through the second compartment of the tank, measure the kinematic viscosity and density of the mixture in the second compartment of the tank, calculate the cetane number of the mixture and the average yarn with the cetane number of the reference diesel fuel when the engine is running on the reference fuel, regulate the flow of additive concentrate to the mixer inlet with correction for the cetane number of the product mixture when the engine is running on the product mixture, compare the cetane number of the product mixture when the engine is running on the product mixture with the cetane number of the reference mixtures, regulate the supply of low-grade diesel fuel to the input of the mixer with correction for the completeness of fuel combustion.