RU2448300C2 - Method for efficient combustion of fuel and device for its realisation - Google Patents

Method for efficient combustion of fuel and device for its realisation Download PDF

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RU2448300C2
RU2448300C2 RU2010106745/06A RU2010106745A RU2448300C2 RU 2448300 C2 RU2448300 C2 RU 2448300C2 RU 2010106745/06 A RU2010106745/06 A RU 2010106745/06A RU 2010106745 A RU2010106745 A RU 2010106745A RU 2448300 C2 RU2448300 C2 RU 2448300C2
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Russia
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fuel
electromagnet
heat
working electrode
voltage
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RU2010106745/06A
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Russian (ru)
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RU2010106745A (en
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Геннадий Васильевич Смирнов (RU)
Геннадий Васильевич Смирнов
Дмитрий Геннадьевич Смирнов (RU)
Дмитрий Геннадьевич Смирнов
Николай Александрович Косенчук (RU)
Николай Александрович Косенчук
Анатолий Петрович Акулов (RU)
Анатолий Петрович Акулов
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Государственное образовательное учреждение высшего профессионального образования Томский государственный университет систем управления и радиоэлектроники (ТУСУР)
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Abstract

FIELD: power engineering.
SUBSTANCE: device is equipped with a high-voltage DC source, the output high-voltage potential of which is connected to a nozzle of a fuel-air mixture. There is an additional electrode made in the form of a ring and grounded, introduced into a burner. The electrode is capable of movement relative to the nozzle. The nozzle in the proposed method serves as a role of an inducing electrode, which serves for electrostatic charging of fuel and air particles. There is a rotary magnetic field introduced into the device and impacting at flows of electrostatically charged particles of oxidant (air) and fuel.
EFFECT: improved process of fuel combustion during reduction of pollutant emissions into atmosphere.
4 cl

Description

The invention relates to a power system, fire technology and can be widely used in heat power plants (boiler houses, blast furnaces, etc.), as well as in jet and gas turbine engines that also use fuel burners to convert the thermal energy of fuel combustion into reactive kinetic energy of a flame jet and exhaust gases.

Known methods and devices for burning fuel by supplying and interconnecting regulation of fuel and oxidizing agent in the furnace with subsequent ignition of the fuel mixture, its combustion and removal of exhaust gases into the atmosphere through an exhaust pipe [1]

Known analogues do not provide high quality combustion and have low environmental performance of exhaust gases.

There are various methods and devices for intensifying the combustion of fuel by preheating it (thermal due to the heat of the exhaust gases or electrothermal), better spraying and mixing and swirling the mixture by using oxygen as an oxidizing agent [2].

The application of all these methods and devices allows saving up to 20% of fuel, improving the ecology of fuel combustion, but still does not provide complete combustion of the fuel and deep environmental cleaning of the exhaust gases due to incomplete interaction of the fuel with the oxidizer, due to the double electric layer at the border flame front, insufficient intensity of branched chain combustion reactions, especially low-calorie fuels (fuel oil, coal, peat).

Closest to the claimed method is a method of burning fuel in a strong electric field [3], in which atomized liquid fuel and an oxidizing agent simultaneously enter the combustion chamber, which are mixed and ignited by an electric spark method.

A device that implements the prototype method [3] is made in the form of a burner containing an air duct, a fuel pipe, a fuel pump, a fuel nozzle, a combustion chamber, flow meters, exhaust gas parameter sensors and an exhaust pipe for exhausting combustion products.

The disadvantages of the prototype (method and device for its implementation) are that the fuel does not burn completely and part of it in the form of waste is released into the atmosphere, thereby reducing the efficiency of fuel combustion and increasing the cost of environmental cleaning of the exhaust gases from the flame. All this leads to low efficiency of the prototype method and the prototype device.

The aim of the present invention is to increase the efficiency of fuel combustion.

The specified technical result is achieved by the fact that in the method of burning fuel, which consists in the interconnected supply of fuel and an oxidizing agent to the combustion chamber, in preparing the fuel mixture by mixing them, igniting the mixture with an electric spark method, in measuring fuel consumption and the degree of purification of exhaust gases, additionally fuel particles and the oxidizing agent is electrostatically charged by passing said particles along the surface of the induction electrode, after which the mixture is ignited and a burned out inside the chamber a transverse rotating magnetic field, then the magnitude of the electrostatic charge on the fuel and oxidizer particles is changed by changing the electric field in the region of the inducing electrode, as well as the amplitude and frequency of the rotating magnetic field.

The specified technical result is achieved in that in a device for burning fuel containing a fuel burner made in the form of a pipe with a flange to which a cover, a combustion chamber, an air duct, a fuel pipe, a fuel nozzle, fuel and oxidizer (air) flow sensors, flow regulators are attached fuel and oxidizer (air), exhaust gas parameters sensors, an additional bushing, a high-voltage constant voltage source, a working electrode, a working electrode moving device, are additionally introduced th engine, stepper motor power supply, electromagnet, electromagnet cooling unit, electromagnet heat shield, three-phase alternating current source with adjustable frequency and amplitude and mode optimizer, the fuel pump being electrically isolated from the fuel line, the working electrode is located inside the combustion chamber and, for example, in the form of a ring, the working electrode moving device is made in the form of a screw, on one end of which a gear is fixed, which engages with gears oh, rigidly fixed to the axis of the stepper motor, and the other end of the screw is made in the form of a cylinder and is rigidly connected to the inner ring of the ball bearing, the outer ring of the ball bearing is rigidly attached to the holder of the working electrode, the screw is screwed into the nut, fixed in the cover, which is attached to the fasteners to the fuel burner flange, the electromagnet is made of a set of plates made of ferrimagnetic material, for example, electrical steel or permalloy, in the form of a round hollow cylindrical body, while and grooves are made in the inner cylindrical generatrix of the surface of the magnetic core, inside of which there are placed electromagnet coils in an amount of at least two, for example, three magnetizing coils located at an angle of 120 ° relative to each other, while the electromagnet coils are made of conductive, for example, copper, hollow tubes with forced cooling, covered with heat-resistant insulating material, the ends of the windings through a bushing made of heat-resistant ceramics are brought out through the burner body and one of the phases of a three-phase voltage source with adjustable amplitude and frequency is connected to the cooling system, to the external side of the output end of the magnetizing coils, and the cooling unit of the electromagnet consists of a coil and a cooler supply system from a pipe made of a heat-conducting non-magnetic material, such as copper, the pipe is bent in the form of two cylindrical spirals, one of which covers the outer cylindrical the surface of the electromagnet and contacts with it, and the second spiral enters and contacts the inner cylinder of the electromagnet, while the electromagnet together with the cooling unit of the electromagnet is placed inside a heat-shielding chamber made, for example, in the form of two coaxial cylinders made of non-magnetic heat-resistant corrosion-resistant material for example, ceramics, hollow leads are made on the outer cylinder of the heat-shielding chamber for connecting to the magnetizing coils the outputs of the phases of the three-phase voltage source, you odes have nozzles communicating with the internal cavity of the electromagnet coils, a cooler supply system is connected to the terminals of the nozzles through the insulating tubes, the heat-shielding chamber from the ends is sealed with ring-shaped caps made of the same non-magnetic heat-resistant corrosion-resistant material as the heat-shielding chamber, in one of the caps two openings are made through which the ends of the pipe of the electromagnet cooling unit exit, inside the chamber around the electromagnet and under the end caps a layer of heat is laid of zolotoy material, for example asbestos, the central axis of symmetry of the heat-shielding chamber coincides with the central axis of symmetry of the combustion chamber, the outputs of the stepper motor power supply are connected to the inputs of the stator coils of the stepper motor, one output of the high-voltage constant voltage source is connected through the bushing to the nozzle, and the other output of the high-voltage source DC voltage connected to the working electrode and grounded, the outputs of all of the above fuel consumption sensors and oxidizer , parameters of exhaust gases and current are connected to the inputs of the mode optimizer, and the outputs of the optimizer are connected to the control input of a high-voltage DC voltage source, to the control input of a three-phase alternating current source, to the input of the power source control by a stepper motor, to the input of the fuel and oxidizer flow regulators ( air).

The development of the invention-device consists in the fact that the heat-protective chamber of the electromagnet is placed inside the burner body and with its inner cylinder covers the flame region.

The development of the invention-device consists in the fact that the burner body is made of non-magnetic, heat-resistant, corrosion-resistant material, such as ceramics, the heat shield of the electromagnet is placed outside the combustion chamber and covers the burner body with its inner cylindrical generating surface.

Figure 1 presents a diagram of a device that implements the inventive method, in which the electromagnet is located inside the combustion chamber.

Figure 2 presents a diagram of a device that implements the inventive method, in which the electromagnet covers the combustion chamber.

Figure 3 shows a diagram of a high voltage DC voltage source.

In Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the principle of creating a magnetic rotating field inside the burner is schematically explained.

A device for implementing the method of burning fuel is depicted in figure 1 and figure 2. All the designations in Fig. 1 and Fig. 2 are identical, and the difference is only in the location of the electromagnet: in Fig. 1 - the heat shield of the electromagnet is located inside the burner body, and in Fig. 2 the heat shield of the electromagnet is located outside the burner body and its internal generatrix the cylinder covers the burner body, and in this case, the burner body is made of non-magnetic heat-resistant corrosion-resistant material, such as ceramic. The principle of operation and physical processes are the same in both cases. Therefore, in the future, we restrict ourselves to the description of the device depicted in figure 1.

A device for implementing the method of burning fuel comprises an air duct 1, a fuel line 2, cut tightly into the air duct 1 with a fuel pump 3, a burner body 4, a diffuser 5, inside of which an expansion air duct 6 is mounted, mounted on the diffuser 5 and passing inside the second conical diffuser 7, which mechanically attached to the diffuser 5 with a flange connection on the cover 8. The internal fuel line 2 has a fuel nozzle 9 at the end. The device also contains sensors 10 for fuel consumption and oxidizer, feed regulators 11 opliva and oxidant sensors 12 flue gas parameters. A bushing 13 is inserted into the device, placed coaxially outside the duct 1 and rigidly holding it inside the external diffuser 5, a high voltage constant voltage source 14, a working electrode 15, a stepper motor 16, a power source 17 of the stepper motor, an electromagnet 18. The source 19 is also introduced into the device three-phase alternating current with adjustable frequency and amplitude, a device for moving the working electrode, which is made in the form of a screw 20, on one end of which gear 21 is rigidly fixed. Gear 21 t in engagement with the gear 22, rigidly mounted on the axis of the stepper motor 17.

The other end of the screw 20 is made in the form of a cylinder and is rigidly connected to the inner ring of the ball bearing 23, the outer ring of the ball bearing 23 is rigidly attached to the holder 24 of the working electrode, the screw 20 is screwed into the nut, fixed in the cover 8, the frame of the stepper motor 16 is rigidly fixed to the platform 25 .

The electromagnet 18 is made of a set of plates of ferrimagnetic material, for example permalloy or electrical steel, in the form of a round hollow cylindrical body. Grooves are made on the inner cylindrical generatrix of the surface of the magnetic core, inside of which are placed coils 26 of electromagnet 18 in an amount of at least two, for example, three magnetizing coils located at an angle of 120 ° relative to each other, each of the magnetizing coils being connected to one of the phases of the three-phase source 19 voltage with adjustable amplitude and frequency. The cooling unit of the electromagnet consists of a coil 27 and a cooling system. The coil 27 is made of a heat-conducting non-magnetic material, such as copper, in the form of a pipe. In this case, the pipe is curved in the form of two cylindrical spirals 28 and 29, one of which covers the external cylindrical surface of the electromagnet 18 and is in contact with it. The second spiral 29 enters and contacts the inner cylinder of the electromagnet 18. The cooling system of the cooling unit is a water supply system consisting of pipes with a water tap. The electromagnet 18 together with the cooling unit of the electromagnet is placed inside a heat shield made, for example, in the form of two coaxial cylinders 30 and 31 of a non-magnetic, heat-resistant, corrosion-resistant material, such as ceramic. The heat-shielding chamber from the ends is drowned out by ring-shaped covers 32 and 33 made of the same non-magnetic heat-resistant corrosion-resistant material as the heat-shielding chamber. On the covers 32 and 33 of the heat-shielding chamber, tubular leads 34 are made, which, through the bushing 35 and the burner body 4, are brought out to feed the coils of the forced cooling coils into the coils and to connect the phase outputs of the three-phase voltage source 19 to the magnetizing coils. Two holes are made in one of the covers, through which the ends of the pipe 36 and 37 of the cooling unit of the electromagnet 18 exit. Inside the chamber around the electromagnet and under the end caps is a layer 38 of heat-insulating material, such as asbestos. An optimizer of 39 modes has also been introduced into the device. The central axis of symmetry of the heat-shielding chamber coincides with the central axis of symmetry of the combustion chamber. In this case, the fuel pump 3 is electrically isolated from the fuel line, the working electrode 15 is located inside the combustion chamber of the burner and is made, for example, in the form of a ring. The outputs of the power source 16 of the stepper motor are connected to the inputs of the stator coils of the stepper motor. One output of the high-voltage constant voltage source 14 is connected through the bushing 13 to the nozzle 9, and the other output of the high-voltage constant voltage source 14 is connected to the working electrode 15 and is grounded. The outputs of all of the above sensors: sensors 10 fuel and oxidizer, sensors 12 parameters of the exhaust gases are connected to the inputs of the optimizer 39 mode, and the outputs of the optimizer 39 mode are connected to the control input of the source 14 high-voltage DC voltage, to the control input of the source 19 three-phase alternating current, to the control input of the power source 17 stepper motor, to the inputs of the regulators 11 of the fuel and oxidizer (air).

Consider the implementation of the proposed method on the example of a fuel burner, shown in a simplified form in figure 1.

The proposed method of burning fuel consists in the interconnected supply of fuel and an oxidizing agent to the combustion chamber, in preparing the fuel mixture by turbulent mixing, igniting the mixture with an electric spark method, in measuring fuel consumption and the degree of purification of exhaust gases. In the proposed method, in order to increase the efficiency of fuel combustion and intensify the combustion of the flame, the fuel particles and oxidizer are electrostatically charged. Currently, three methods are used for electrostatic charging of particles [4]:

by deposition on the surface of a particle of ions from the volume of gas surrounding the particle;

by electrostatic induction, which occurs as a result of the separation of charges upon contact of particles with an electrode under a potential;

by mechanical, chemical and thermal electrification.

The implementation of the first method of electrostatic charging of particles, as a rule, is carried out in the combustion zone of the corona discharge, which is not acceptable in the conditions of fuel combustion.

The implementation of the third method of electrostatic charging of particles does not give a tangible effect and requires the creation of additional conditions for the implementation of this method.

In the inventive method, the second (induction) method of electrostatic charging of particles is used, which is quite effective and relatively easy to implement in practice.

Therefore, in the inventive method, a stream of particles of the air-fuel mixture is passed along the surface of the induction electrode, after which the mixture is ignited. Air is most often used as an oxidizing agent, although oxygen or ozone is sometimes used. Electrostatic charging of fuel particles and oxidizer (air) is necessary so that charged particles of fuel and oxidizer (air), getting into a longitudinal electric field directed along the flame, acquire additional kinetic energy, which helps to increase the efficiency of interaction of particles with each other, the conversion of heat energy of burning fuel into reactive kinetic energy of a jet of flame and gases. When electrostatically charged particles enter a longitudinal field, the thermal motion of ionized and polarized particles of fuel and exhaust gases is ordered by the Coulomb force effect on them directed along the field vector. The sign of the particle charge can be changed by changing the sign of the potential on the induction electrode. With a positive potential at the inducing electrode, relative to the grounded working electrode, the fuel particles and the oxidizing agent (air) of the air acquire a positive electrostatic charge. With a negative sign of the potential on the inducing electrode, relative to the grounded working electrode, the particles of fuel and oxidizer (air) acquire a negative electrostatic charge. The magnitude of the charge of the particles of the air-fuel mixture can be changed by changing the electric field near the induction electrode. The mentioned electric field strength can be changed either by changing the absolute value of the potential on the inducing electrode, or by changing the distance between the inducing and working electrodes, or by simultaneously and mutually agreeing changes in both of these values.

For more efficient combustion of the fuel in the combustion chamber create a transverse rotating magnetic field. Electrostatically charged particles of fuel and oxidizer, moving in the combustion chamber along the electric field vector, falling into a transverse magnetic field, deviate under the influence of the Lorentz force from a straight trajectory in one direction or another, depending on the sign of the particle charge, the direction of the magnetic field and their direction initial movement. In a transverse magnetic field, the stream of flow of these electrostatically charged particles bends, and if the magnetic field rotates, then the curved stream of stream of charged particles also begins to rotate. In the process of fuel combustion, the flame is a plasma and consists of positively and negatively charged particles of fuel and an oxidizing agent (air). In the flame, in the absence of external electric and magnetic fields, double electric layers arise, which prevent the intensive burning of fuel. In a rotating transverse magnetic field, these double electric layers are destroyed. Due to the bending and rotation of the flows of charged particles of fuel and oxidizer (air), the path of each of the particles of the stream increases significantly, their mixing is more efficient, the number of acts of interaction of fuel particles with oxidizer particles increases, and these processes lead to a significant increase in the efficiency of fuel combustion. In addition, the particles of fuel and oxidizing agent have different masses, different ionization potentials and other characteristics. This leads to the fact that particles of fuel and oxidizer (air), passing along the induction electrode, acquire various electrostatic charges, and having different masses, begin to move at different speeds. Different charges acquired by particles passing near the inducing electrode, different masses and particle velocities also significantly increase the number of interactions between them, which leads to an increase in combustion efficiency.

Fuel burner operates as follows.

First, the oxidizing agent (air) is supplied to the duct 1 and fuel from the fuel pump 3 through the fuel pipe 2 and the nozzle 9, then they are pre-mixed and the resulting air-fuel mixture is ignited, for example, by the spark method. Then the fuel and air consumption is measured by sensors 10 of the fuel and oxidizer (air) consumption and exhaust gas parameters, by sensors 12 of the exhaust gas parameters, and the fuel and oxidizer (air are regulated by the fuel and oxidizer (air) regulators 11, depending on the signals received from the mode optimizer 39, for example, according to the criterion of the minimum fuel consumption for the given parameters of the exhaust gases, then a high-voltage source of direct voltage 14 is turned on, a high-voltage nozzle 9 is fed through the bushing 13 to the nozzle potential, and the second output of the high-voltage constant voltage source 14 is connected to the working electrode 15, which is grounded. The sign of the potential at the output of the high-voltage constant voltage source 14 can be changed, depending on the type of fuel, from positive to negative, by switching the polarity of this source. high-voltage source 14 of a constant voltage is shown in figure 3. High-voltage source 14 of voltage consists of an adjustable Converter 40 and the switch 41 of the output voltage. 42 indicates a constant voltage source with an output voltage of 12 V. A high voltage constant voltage source 14 allows you to change the polarity of the output potential supplied to the nozzle 9 from positive to negative. The absolute value of the potential at the output of the high-voltage adjustable converter 40 can be continuously changed from 0 to 10 kV, from the mode optimizer 39. The high-voltage voltage converter operates as follows.

Adjustable converter 40 generates an adjustable high voltage. The output voltage switch 41 switches the polarity of the output potential. The switch 41 is made on the basis of high voltage relays. The regulation of the output potential value is carried out by an analog signal from the optimizer of 39 modes.

The optimizer of 39 modes is based on the ATmega64-16AI microprocessor. Optimizer 39 modes allows you to change all modes and parameters manually, from the control panel of the modes, or automatically, according to a specific program, wired into the microprocessor.

After connecting the high-voltage voltage source 14, regardless of what polarity the output potential has with respect to the grounded working electrode 15, they begin preliminary optimization of the modes by adjusting the output parameters: the absolute value of the potential at the output of the high-voltage constant voltage source 14, and the currents input and output, interconnected with the regulation of the position of the ring working electrode 15. By adjusting the above parameters, the sign of the charge and its value n and particles of a fuel-air mixture, their speed and, therefore, kinetic energy.

Changing the distance between the nozzle 9 and the working electrode 15 is carried out using a stepper motor 16 and a device for moving the working electrode. The movement of the working electrode 15 in the longitudinal direction is as follows. The mode optimizer 39 generates pulses of positive or negative polarity. The polarity of the generated pulses depends on which side the working electrode should be moved: to or from the nozzle 9. The pulses generated in the optimizer 39 of the mode are supplied to the input of the power source 17 of the stepper motor 16. The power source 17 converts these pulses to the pulse power of the stator coils of the stepper motor 16. The armature of the stepper motor rotates by a certain angle, the magnitude of which is determined by the number of pulses coming from the optimizer 39 mode. The axis of the anchor of the stepper motor 16 with the gear 22 mounted on it also rotates a certain angle. The rotation of the axis of the stepper motor is transmitted to the gear 21 of the screw 20. The gear 21 together with the screw 20 are rotated by a certain angle. The screw 20 begins to screw into the nut, rigidly fixed to the cover 8, or to get out of this nut, depending on the desired direction of movement of the working electrode 15. In this case, the screw 20 moves longitudinally towards or from the nozzle 9. The screw 20 rotates freely in the ball bearing 23, which eliminates the rotational movement of the holder 24 of the working electrode and, accordingly, of the working electrode 15. Under the influence of the longitudinal movement of the holder 24 of the working electrode 15, the longitudinal movement of the working electrode 15 to or from the nozzle 9 occurs. The generation of negative or positive impulses from mode optimizer 39 depends on whether the efficiency of burning fuel in the burner increases or decreases. The generation of pulses is as follows. Suppose, it was decided to optimize the process of burning fuel according to the criterion of minimizing the emission of harmful substances in the exhaust gas stream. To optimize according to the selected criterion, the parameters of the exhaust gases are first measured without supplying a high voltage potential to the nozzle 9.

After measuring the parameters of the exhaust gases, a certain fixed value of potential, of negative or positive polarity relative to the grounded electrode is installed at the output of the high-voltage voltage source, and the working electrode 15 in the optimization unit 39 is set to move in one direction or another, for example, towards the nozzle 9. In the process moving the working electrode constantly, using the sensor 12 parameters of the exhaust gases, the parameters of these gases are measured. The movement of the electrode 15 is carried out until there is an improvement in the composition of the exhaust gases, which is understood as a decrease in the concentration of harmful emissions into the atmosphere, for example, nitrogen oxides, sulfur oxides, etc. If this improvement stops, then they are recorded (stored) in the mode optimizer then the position of the working electrode 15 relative to the nozzle 9, at which the best value of the parameters of the exhaust gases is achieved. By the best value of the parameters of the exhaust gases is understood such a value at which the concentration of emissions of harmful substances into the atmosphere is minimal. After that, the value of the absolute value of the potential at the output of the regulated high voltage source is changed by a certain amount, and the process described above is repeated again. This procedure for setting the modes for fuel combustion is repeated until the optimal modes for the fuel used are determined: the sign and value of the potential at the output of the high-voltage voltage converter and the distance between the nozzle and the working electrode.

If when moving the working electrode 15 towards the nozzle 9, the parameters of the exhaust gases deteriorate, then the mode optimizer 39 starts to generate negative pulses and the electrode starts to move away from the nozzle 9. By interconnecting the voltage value at the output of the regulated high-voltage voltage source 14 and moving the working electrode to this or that side is thereby ensured by the electric field “compression” of the flame in the vertical (longitudinal) plane and “stretching,” expanding it horizontally th (transverse) plane.

It should be noted that the stepper motor 16 is only necessary in the process of setting the burner to optimal conditions when changing the type of fuel, or in some other cases, for example, after a long shutdown of the installation or after its repair.

The criterion for the correct adjustment of this system of parameters of the electric field of the burner, which stimulates the efficiency of fuel combustion, is to achieve the best degree of environmental cleaning of the exhaust gases at the given parameters for fuel and electricity consumption. All these optimization modes are achieved by reconfiguring the optimizer 39 operating mode of the high-voltage source 14 of the electric field and changing the position of the annular working electrode 15, relative to the flame front in the fuel burner.

After achieving optimal combustion modes of the fuel achieved by exposing the flows of fuel and oxidizer (air) to high voltage electrical voltage, they proceed to further, final optimization of the combustion regimes. For this, the optimal values of the combustion parameters achieved in the previous preliminary optimization are established: the sign and value of the potential at the output of the high-voltage voltage converter and the distance value between the nozzle and the working electrode. After establishing the combustion parameters achieved in the preliminary optimization, a current is passed through the coils of the electromagnet 26, connecting a three-phase voltage source 19 to them. The current flowing through the coils creates a transverse magnetic rotating field in the gas chamber. Under the influence of this transverse rotating magnetic field, the electrostatically charged particles of the fuel and oxidizer deviate from the initial trajectory that they had before the transverse magnetic field. The stream of charged particles of fuel and oxidizer under the influence of a transverse magnetic field bends and begins to rotate. The degree of bending of the stream of charged particle stream depends on the amplitude of the rotating magnetic field, the mass and charge of these particles, and the speed and frequency of their rotation is determined by the frequency of the magnetic rotating field. The mode optimizer 39 generates control actions that enter the input of the three-phase voltage source 19. Depending on the values of control actions that enter the input of the three-phase voltage source 19, the amplitude and frequency of the supply current of the magnetizing coils 26 of the electromagnet smoothly change, which changes the amplitude and frequency rotation of the magnetic field. When changing the amplitude of a rotating magnetic field, as mentioned above, the bending angle of the stream of charged particles is changed, which allows you to change the degree of "compression" of the flame in the longitudinal direction and the degree of "expansion" of the flame in the transverse direction. By changing the frequency of rotation of the electromagnetic field, they achieve a significant increase in the intensity of mixing of charged particles of fuel and an oxidizing agent, the number of acts of their interaction increases significantly. By interconnecting changes in the amplitude and frequency of the magnetic field, optimal fuel combustion is achieved according to a given criterion, using sensors 10 for supplying fuel and an oxidizer (air), sensors 12 for exhaust gases, regulators 11 for supplying fuel and an oxidizer (air), and an optimizer 39 modes. During normal operation of the burner, to prevent overheating of the electromagnet windings, a cooling unit is used, consisting of a coil made of a copper tube 27, a heat shield made of non-magnetic heat-resistant material and a layer 38 of heat-insulating material, such as asbestos. Depending on the design of the burner and the magnetic core, a magnetic core with coils, a cooling system and a heat-shielding unit can be located on the outside of the burner body (see figure 1), covering this case, or inside the burner case (see figure 2).

An example of a specific implementation. To implement the inventive method and reactor, the assembly depicted in figure 1 was assembled.

A device for implementing the method of burning fuel was assembled on the basis of a burner of an asphalt concrete plant of the ДС-117 brand, it contains an air duct 1, a fuel line 2, cut tightly into an air duct 1 with a fuel pump 3, a burner body 4, a diffuser 5, inside of which an expansion air duct 6 is mounted, reinforced on the diffuser 5, and passing inside the second conical diffuser 7, which is mechanically attached to the diffuser 5 by a flange connection on the cover 8. The internal fuel pipe 2 has at the end a fuel nozzle 9. The device contains also sensors 11 fuel consumption and oxidizer (air), regulators 11 fuel consumption and oxidizer (air), sensors 12 parameters of the exhaust gases. An insulator 13 is additionally inserted into the device, placed coaxially outside the duct 1 and rigidly holding it inside the external diffuser 5, a high voltage constant voltage source 14, a working electrode 15, a stepper motor 16, a power source 17 of a stepper motor, an electromagnet 18, a three-phase AC source 19 with adjustable frequency and amplitude, moreover, the fuel pump 3 is electrically isolated from the fuel line.

The working electrode 15 is located inside the combustion chamber and is made, for example, in the form of a ring, the device for moving the working electrode is made in the form of a screw 20, with an M10 thread. A gear 21 is rigidly fixed at one end of the screw, the diameter of which was 24 mm. Gear 21 had 12 teeth. The height of each tooth was 4 mm. The thickness of the gear was 200 mm. The gear 21 was engaged with the gear 22 fixed to the axis of the stepper motor 16. The gear 22 was completely identical to the gear 21. The distance that the working electrode 15 could move in the longitudinal direction relative to the nozzle 9 was determined by the total thickness of the gears 21 and 22 and equaled 400 mm. The other end of the screw 20 is made in the form of a cylinder and is pressed into the inner ring of the ball bearing 23. The outer ring of the ball bearing 23 is rigidly attached to the holder 24 of the working electrode, the screw 20 is screwed into the nut M10, fixed on the cover 8. The surface of the nozzle 9, the working electrode 15 and elements devices for moving the working electrode were made of heat-resistant corrosion-resistant metal - titanium.

The bed of the stepper motor 16 is rigidly fixed to the platform 25, which could be rigidly fixed with fixing clamps to the fixed bed. By loosening the mounting clamps, the platform could be moved horizontally. The magnetic core of electromagnet 18 was made of sheet steel. The magnetic core package was composed of rings of electrical steel sheet. The outer diameter of these rings was 48 cm, and the inner diameter was 28 cm. On the inner generatrix of the rings, and therefore the magnetic core, 6 grooves were made for the electromagnetic coils of the 26 electromagnets. Three identical coils were located in the grooves at an angle of 120 ° relative to each other. The coils were connected respectively to the phases of the three-phase power supply so that the currents were symmetrical. The coils were made of hollow copper wires of rectangular cross section with a wall thickness of 1.5 mm. The coils had tubular copper leads 34, which, through the bushing 35, the burner body 4 mounted, were brought out and used for forced in-conductor cooling of the electromagnet coils. Through the conclusions 34, the electromagnet coils could be inserted into the hollow wire of the coils through a pipeline made of non-conductive material, for example, heat-resistant ceramics, and a cooler, such as air, could be taken out of the turns. To the surface of the copper leads 34 were connected electrical leads serving to connect the coils of the electromagnet to the source 19 of the three-phase voltage. The rectangular wires of the coils were insulated with two layers of alkali-free fiberglass using heat-resistant organosilicon varnishes of the PSDK brand. To the ends of the electromagnet coils, hollow lugs 34 were soldered with PSr-15 solder, which have leads for connecting the phase outputs of the three-phase voltage source 19 to them. In addition, the hollow lugs had tubular outlets through which a cooler, for example air or water, used for forced cooling of the windings was supplied through heat-insulating tubes to the internal cavities of the conductors of the coils. Each of the magnetizing coils was connected to one of the phases of the three-phase voltage source 19 with adjustable amplitude and frequency. As a source of 19 three-phase voltage, a Danfoss FC51 frequency converter, 1.5 kW, input / output 3 × 380 V with a Danfoss Sine-wave Filter 4.5A connected in series at the output was used. The frequency converter was controlled by the optimizer 39 modes using the RS 485 interface. At the output of the three-phase voltage source, the frequency of the output voltage was regulated from 5 Hz to 400 Hz, the interphase output voltage was regulated from 50 V to 380 V.

A rotating magnetic field inside the burner was created by means of a three-phase current system. The process of creating a rotating magnetic field inside the burner will be explained using figure 4 and figure 5. Let three identical coils 43, 44 and 45 be located in the grooves at an angle of 120 ° relative to each other. 4, they are shown in cross section. We connect the coils 43, 44 and 45, respectively, to the phases of the power source so that the currents are symmetrical (Fig. 5) with the positive directions of the currents adopted in Fig. 4. Let us consider the schematic pictures of the magnetic field for various moments of time following each other. Let the first of the considered time points correspond to the coincidence of the time line with the vector i 1 (Fig. 5, position 46). Moreover, i 1 > 0, i 2 <0 and i 3 <0. The directions of the currents in the coils and a schematic picture of the magnetic field are shown in Fig.6. For a point in time corresponding to the position of the time line indicated by the number 47, i 1 > 0, i 2 = 0 and i 3 <0. The directions of the currents in the coils and a schematic picture of the field are given in Fig.7. Next, FIGS. 8 and 9 show the directions of the currents, and schematic field patterns for time instants corresponding to the positions of the timelines 48 and 49. A comparison of the schematic magnetic field patterns shown for different consecutive time instants illustrates the rotation of the magnetic field. If we continue the analysis, we can make sure that during one period of alternating current, the magnetic field of such coils makes one complete revolution.

The direction of rotation of the magnetic field depends solely on the sequence of phases of the currents in the coils. If you keep the connection of coil 43 to phase A of the power source, connect coil 44 to phase C, and coil 45 to phase B, then the direction of rotation of the field is reversed. This can be seen by constructing a schematic picture of the magnetic field for different instants of time, similarly to what was shown above.

The coil included in the electromagnet cooling unit was made of a cylindrical copper tube 27. The outer diameter of the tube 27 was 7 mm, and the inner diameter of the tube was 5 mm. The pipe 27 was bent in the form of two cylindrical spirals 28, 29, one of which 28 covers and contacts the outer cylindrical surface of the electromagnet 18, and the second spiral 29 enters and also contacts the inner cylinder of the electromagnet 18. The internal cavity of the spirals 28 and 29 communicate with each other. The electromagnet 18 together with the cooling unit of the electromagnet is placed inside a heat-shielding chamber made in the form of two coaxial cylinders 30 and 31 made of non-magnetic heat-resistant corrosion-resistant ceramics. The heat-shielding chamber from the ends is drowned out by ring-shaped covers 32 and 33, also made of heat-resistant corrosion-resistant ceramics, as is the heat-shielding chamber. On the covers 32 and 33 of the heat-shielding chamber, conclusions 34 are made for connecting the outputs of the phases of the three-phase voltage 19 to the magnetizing coils of the phases and, if necessary, supplying cooler electromagnet coils, for example, air, inside the hollow wires. Two openings are made in one of the covers, through which the ends of the pipe 36 and 37 of the cooling unit of the electromagnet 18 go out further through the bushing 35. Inside the chamber around the electromagnet and under the end caps is a layer 38 of thermal insulation material, such as asbestos. The central axis of symmetry of the heat-shielding chamber coincides with the central axis of symmetry of the combustion chamber. The outputs of the power source of the stepper motor 16 are connected to the inputs of the stator coils of the stepper motor. One (high-voltage) output of the high-voltage constant voltage source 14 is connected through the bushing 13 to the nozzle 9, and the other output of the adjustable voltage converter 14 is connected to the working electrode 15 and is grounded. The outputs of all of the above sensors: 10 - fuel and oxidizer, 12 - exhaust gas parameters were connected to the inputs of the optimizer 39 mode, and the outputs of the optimizer 39 mode were connected to the control input of the high-voltage source 14 DC voltage, to the control input of the source 19 three-phase AC current, to the control input of the power source 17 of the stepper motor and to the regulators 11 of the fuel and oxidizer. The gas analyzer ADG-304 manufactured by OPTEC was used as a sensor for the parameters of the exhaust gases. Information was provided from the gas analyzer via the RS 232 interface.

Fuel consumption was monitored using a UFM 005-15 flow meter of Staroruspribor OJSC (Russia) with an RS-485 output interface.

The oxidizer (air) flow rate control was carried out using the Dwyer 641RM air flow sensor built into the duct with an output signal of 4-20 mA.

Adjustable source 14 high voltage DC voltage is made according to the circuit shown in Fig.3. As a high-voltage source, a source with an adjustable output voltage of up to +10 kV was used, made according to the circuit shown in Fig.1.19 in the work (Kostikov V.G., Nikitin I.E. REA high-voltage power sources. - M.: Radio and Svyaz, 1986. - 200 pp., ill., p. 22).

High voltage switching was performed by Gigavac relay G2 (see Modern Electronics magazine No. 1, 2007, p. 18) K1-K4.

Fuel and oxidizer supply regulation was carried out using standard regulators of the brand MEO-40 / 63-0.25I-94, which are part of the asphalt mixing plant.

The acts of interaction of electrostatically charged particles of fuel and an oxidizing agent (air) break down their molecules into ions and radicals, and ozonize the air, increasing its oxidizing ability. Electrically charged fuel particles emitted from the nozzle 9 are better crushed under the action of electrostatic repulsive forces, which leads to an increase in the opening angle of the fuel jet in the electric field by 1.4-1.8 times compared with the usual method, in both methods at the same pressure fuel pump 3.

The use of a rotating magnetic field additionally leads to a significantly larger increase in the angle of the jet and can reach 3-5 times the increase, compared with the usual method at the same pressure of the fuel pump 3.

A feature of the inventive combustion method is the thermal heating of a flame by electric current from a high-voltage voltage source 14 and a rotating magnetic field created by an electromagnet, in intensive processing of a fuel-air mixture and flame by streams of high-energy electrostatically charged particles obtained by induction by contacting air and fuel particles with the surface high-voltage electrode, the role of which in our case is played by the nozzle 9. Electrostatically charged parts The particles of air and oxidizer in the region between the nozzle 9 and the working electrode 15, due to the amplifying effect of the force acting on them by the electric field, accelerate and acquire high speeds. When these accelerated electrostatically charged particles fall into the region of a rotating magnetic field, the particle flows change their rectilinear path to a curved one and begin to rotate. The steepness of the bend of the trajectory of charged particles is determined by the amplitude of the rotating magnetic field, and the frequency and speed of their rotation depends on the frequency of the rotating magnetic field, the charge of the particles and their mass. Therefore, for the proper effective operation of such combustion in the combined longitudinal electric and rotating magnetic fields, it is necessary to achieve, on the one hand, the optimal parameters of these fields, on the other hand, to comply with the condition for preventing breakdown or gas discharge inside the burner.

Another reason for improving the combustion of fuel in the inventive method and device is the destruction of the double electric layer along the front of a conventional flame, which occurs when implementing known methods of burning fuel, due to the depletion of the volume of the flame by free electrons that more easily escape from the flame, compared to much heavier ones ( thousands of times) by positively charged radicals of the fuel, which does not allow the fuel to be oxidized efficiently (few electrons), slows down the chain reaction of combustion and reduces its effect vnost.

In the claimed case, due to an increase in the speed of movement of charged particles, an increase in the number of acts of interaction between these particles, due to the passage of a rotating magnetic field, a fairly intense stream of secondary electrons is formed during the collisions of charged particles, under the influence of which the double layer is destroyed, since high-energy electrons are of secondary emission accelerated by the field freely penetrate into the flame zone, overcoming this layer, and improve the conditions for the occurrence of fission chain reactions more of fuel radicals into smaller and smaller ones due to the physicochemical interaction of charged fuel radicals, secondary electrons and ozone with the release of additional energy of heat and light. Another mechanism of intensification of fuel combustion is a sharp vertical compression and horizontal expansion of the flame front, which occurs under the influence of a rotating magnetic field on electrostatically charged particles of fuel and oxidizer. By changing the parameters of a rotating magnetic field (its amplitude and frequency), it is possible to widely vary the degree of compression of the flame front in the vertical direction and its expansion in the horizontal direction.

In the combustion plant, oil was used as fuel.

Initially, without connecting a high voltage source and rotating magnetic fuel, varying the feed rate of the fuel and oxidizer (air) and analyzing the composition of the exhaust gases after burning the fuel, we determined the optimal combustion mode according to the criterion of environmental cleanliness of the exhaust gases. It was found (see table 1) that, in the optimal mode, the degree of purification of dust and various harmful substances after exiting the cyclone after the smoke exhauster ranged from 10 to 35%.

After connecting the source of the high-voltage adjustable voltage converter to the nozzle and the working electrode and coordinated changes in the voltage and the gap between the nozzle and the working electrode, at the same constant feed rate of the fuel and oxidizer as in the previous experiment, it was found that the optimal mode of fuel combustion in under these conditions was observed at a voltage between the nozzle and the working electrode of 10 kV and a gap between them of 20 cm. It was found (see table 1.) that under the above-mentioned combustion modes willow in the optimum mode, the degree of purification of dust and various harmful substances after exiting the burner ranged from 50 to 75%.

After the achieved results, according to the criterion of environmental cleanliness of the exhaust gases, we started the third stage of research: leaving the feed rate of the fuel and oxidizer, voltage and gap between the nozzle and the working electrode unchanged, created a transverse rotating magnetic field inside the burner, for which a three-phase voltage was connected to the windings. By adjusting the amplitude of the current in the electromagnet windings and the frequency of the supply voltage, we achieved the maximum reduction of harmful emissions in the exhaust gases at an amplitude value of the magnetizing current in the windings of 15 A and a frequency of a rotating magnetic field of 1.5 kHz.

In table 1. The results of measuring the speed and flow rates are given and samples of solid and gaseous pollutants are taken to determine the effectiveness of the proposed method and device.

The measurements were carried out in accordance with GOST 17.2.4.06-90 “Nature protection. Atmosphere. Methods for determining the speed and flow rate of dust and gas streams emanating from stationary sources of pollution. "

The degree of purification C is calculated by the formula

Figure 00000001

where M.V. usual ..rezh - Mass. emission of dust or oxide at the exit of the asphalt mixer after optimization in normal mode, M.V. the claimed regime. - Mass. dust or oxide emission at the output of the asphalt mixer after optimization when applying high voltage to the nozzle or when applying high voltage to the nozzle and connecting a longitudinal magnetic field.

Characteristics of emission sources and measurement conditions

Table 1 Options Exit after the exhaust fan From the dryer drum From the asphalt mixer After optimization in normal mode Ste
stump clean
Ki C,%
After optimization
during connection
nii high voltage
The degree of purification,% After optimization when connecting high voltage and longitudinal magnetic field Ste
stump of cleaning,%
one 2 3 four 5 6 7 8 9 Diameter of the gas duct, m 0.54 × 0.54 D = 0.24 0.8 × 0.34 0.8 × 0.34 0.8 × 0.34 The cross section of the gas duct, m 2 0.2916 0,0452 0.2720 0.2720 0.2720 Voltage between nozzle and working electrode, kV 0 twenty twenty Longitudinal magnetic field. Magnetization current, A 0 0 40 The temperature of the gas stream, deg. FROM 91 92 91.5 Gas velocity, m / s 12 12 12 Gas flow rate nm 3 / s 3,1 3,1 3,1 Dust concentration (K), g / nm 3 1,408 0.535 0,0408 Mass emission (M.V.), g / s 4,3648 0 1.6586 62.0 0.1266 97.1

Continuation of table 1 Carbon monoxide K, g / m 3 6,791 2,506 0.3871 M.V., city / s 21.7312 0 8,019 63.1 1,2387 94.3 sulphur dioxide K, g / m 3 0,083 0,0310 0.0041 M.V., city / s 0.9125 0 0.3413 62.6 0,0447 95.1 Nitrogen oxide K, g / m 3 0.1932 0,0657 0.0073 M.V., city / s 0.6778 0 0.2304 66.0 0,0258 96.2 Nitrogen dioxide K, g / m 3 0.0121 0.0034 0 M.V., city / s 0.5825 0 0.1619 72,2 0 one hundred

It was found (see table 1.) that with the above modes of fuel burning in the optimal mode after applying a high voltage activator of 20 kV between the nozzle and the first hollow torus, the degree of purification of dust and various harmful substances after exiting the burner was in the range from 65 to 72.2%.

After the achieved results, according to the criterion of environmental cleanliness of the exhaust gases, we proceeded to the next stage of research: leaving the feed rate of the fuel and oxidizer, voltage and gap between the nozzle and the working electrode unchanged, we created a longitudinal magnetic field inside the burner inside the burner, for which we connected to an electromagnetic coil. By adjusting the amplitude of the current in the electromagnet windings, we achieved the maximum reduction of harmful emissions in the exhaust gas composition with an amplitude value of the magnetizing current in the windings equal to 40 A. It was found (see Table 1) that under the above-mentioned fuel combustion modes, the degree of purification is optimal dust and various harmful substances after exiting the cyclone after the exhaust fan was in the range from 80 to 96.5%.

Thus, the implementation of the proposed method and device showed that compared with the prototype method and the prototype device, the amount of emissions of harmful components of the exhaust gases is reduced by more than an order of magnitude.

Thus, the proposed method and device allowed, in the aggregate, to significantly increase the efficiency of fuel combustion and improve the environmental parameters of the exhaust gases.

Information sources

1. Polytechnical dictionary. - M .: "Soviet Encyclopedia", 1976, p.196.

2. (analogues - from the book. N.A. Fedorov. "Technique and gas utilization efficiency." - M .: "Nedra", 1975, p. 235).

3. (US N 4588372, IPC F23N 5/12, 1985 - prototype).

4. Electrical reference book. In 3 volumes T. 3. Book 2. The use of electrical energy / Under the total. ed. MEI professors V.G. Gerasimov, P.G. Grudinsky, L.A. Zhukov, etc. - 6th ed., rev. and add. - M.: Energoizdat, 1982., p. 228.

Claims (2)

1. The method of burning fuel, which consists in the interconnected supply of fuel and an oxidizing agent to the combustion chamber, preparing the fuel mixture by mixing them, igniting the mixture with an electric spark method, measuring fuel consumption and the degree of purification of the exhaust gases, the particles of the fuel and oxidizer being electrostatically charged by passing the particles along the surface of the induction electrode in the form of a fuel nozzle, after which the mixture is ignited and a transverse rotating magnetic field is created inside the combustion chamber e, then alter the magnitude of electrostatic charge on the particles of fuel and oxidant by changing the electric field intensity in the region between the nozzle and the working electrode, and the amplitude and frequency of the rotating magnetic field.
2. A device for burning fuel, containing a fuel burner made in the form of a pipe with a flange to which is attached a cover, a combustion chamber, an air duct, a fuel pipe, an inducing electrode in the form of a fuel nozzle, fuel and oxidizer (air) flow sensors, fuel flow regulators and oxidizer (air), exhaust gas parameters sensors, moreover, a bushing, a high voltage constant voltage source, a working electrode, a working electrode moving device, a step d a igniter, a stepper motor power supply, an electromagnet, an electromagnet cooling unit, an electromagnet heat shield, a three-phase alternating current source with adjustable frequency and amplitude, and a mode optimizer, the fuel pump being electrically isolated from the fuel line, the working electrode is located inside the combustion chamber and is made, for example, in in the form of a ring, the device for moving the working electrode is made in the form of a screw, on one end of which a gear is fixed, which engages with the gear, rigidly mounted on the axis of the stepper motor, and the other end of the screw is made in the form of a cylinder and is rigidly connected to the inner ring of the ball bearing, the outer ring of the ball bearing is rigidly attached to the holder of the working electrode, the screw is screwed into the nut, fixed in the cover, which is attached to the fuel flange by fasteners burner, the electromagnet is made of a set of plates of ferrimagnetic material, for example, electrical steel or permalloy, in the form of a round hollow cylindrical body, while grooves are made in the inner cylindrical generatrix of the surface of the magnetic core, inside of which are placed electromagnet coils in an amount of at least two, for example, three magnetizing coils located at an angle of 120 ° relative to each other, while the electromagnet coils are made of conductive, for example, copper, hollow tubes with forced cooling, covered with heat-resistant insulating material, the ends of the windings through the bushing made of heat-resistant ceramics, removed through the burner body and one of the phases of the three-phase voltage source with adjustable amplitude and frequency is connected to the outside of the output end of the magnetizing coils, the cooling unit of the electromagnet consists of a coil and a supply system of a cooler, and the coil is made of pipes made of heat-conducting non-magnetic material, for example, copper, the pipe is bent in the form of two cylindrical spirals, one of which covers the outer cylindrical surface the electromagnet’s surface is in contact with it, and the second spiral enters and contacts the electromagnet’s inner cylinder, while the electromagnet, together with the electromagnet cooling unit, is placed inside a heat-shielding chamber made, for example, in the form of two coaxial cylinders made of non-magnetic heat-resistant corrosion-resistant material, for example, ceramics, hollow leads are made on the outer cylinder of the heat-shielding chamber for connecting to the magnetizing coils the outputs of the phases of the three-phase voltage source; there are nozzles in communication with the internal cavity of the electromagnet coils, a cooler supply system is connected to the terminals of the nozzles through the insulating tubes, the heat shield from the ends is sealed with ring-shaped covers made of the same non-magnetic heat-resistant corrosion-resistant material as the heat shield, in one of the covers two openings through which the ends of the pipe of the electromagnet cooling unit go out, a layer of thermal insulation is laid around the electromagnet inside the chamber and under the end caps For example, asbestos, the central axis of symmetry of the heat-shielding chamber coincides with the central axis of symmetry of the combustion chamber, the outputs of the stepper motor power supply are connected to the inputs of the stator coils of the stepper motor, one output of the high-voltage constant voltage source is connected through the bushing to the nozzle, and the other high-voltage output a constant voltage source is connected to the working electrode and is grounded, the outputs of all of the above fuel consumption sensors and oxidizer, steam etrov flue gas and current are connected to the inputs of the optimizer mode, and outputs an optimizer coupled to the control input of a high voltage DC voltage to the input of the source control three-phase alternating current to the input of the power supply controlling a stepper motor, to the inlet fuel flow controllers and oxidant (air).
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235274A1 (en) * 1973-06-28 1975-01-24 Snecma
SU882423A3 (en) * 1975-10-09 1981-11-15 Й.Эбершпрехер (Фирма) Burner device
SU1112174A1 (en) * 1983-02-17 1984-09-07 Предприятие П/Я Уд-249/7 Burner device
US4588372A (en) * 1982-09-23 1986-05-13 Honeywell Inc. Flame ionization control of a partially premixed gas burner with regulated secondary air
SU1816933A1 (en) * 1990-05-30 1993-05-23 Proizv Ob Edinenie Turbostroen Burner of combustion chamber of gas-turbine plant
RU2299354C1 (en) * 2005-11-21 2007-05-20 РЯЗАНСКИЙ ВОЕННЫЙ АВТОМОБИЛЬНЫЙ ИНСТИТУТ им. генерала армии В.П. Дубынина Preliminary heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235274A1 (en) * 1973-06-28 1975-01-24 Snecma
SU882423A3 (en) * 1975-10-09 1981-11-15 Й.Эбершпрехер (Фирма) Burner device
US4588372A (en) * 1982-09-23 1986-05-13 Honeywell Inc. Flame ionization control of a partially premixed gas burner with regulated secondary air
SU1112174A1 (en) * 1983-02-17 1984-09-07 Предприятие П/Я Уд-249/7 Burner device
SU1816933A1 (en) * 1990-05-30 1993-05-23 Proizv Ob Edinenie Turbostroen Burner of combustion chamber of gas-turbine plant
RU2299354C1 (en) * 2005-11-21 2007-05-20 РЯЗАНСКИЙ ВОЕННЫЙ АВТОМОБИЛЬНЫЙ ИНСТИТУТ им. генерала армии В.П. Дубынина Preliminary heater

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