KR101593806B1 - An apparatus for PM generator in use with thermal decomposition - Google Patents

Abstract

More particularly, the present invention relates to a PM generating device using pyrolysis, and more particularly, to an apparatus for generating PM soot particles by mixing a hydrocarbon fuel in a gaseous state into a flow of an inert gas in an evaporator and then supplying an inert gas and a fuel mixer to a high- The present invention relates to a PM generator using pyrolysis, which comprises: a vaporizer 100; And a PM (Particulate Matters) generating unit 200 connected to the evaporator 100. The PM generating unit 200 includes an injector 210 injecting fuel for pyrolysis; A tube 220 communicating with the injection unit 210; A heating unit 240 to which the tube 220 is inserted; The fluid supplied from the evaporator 100 to the particulate matters generator 200 is pyrolyzed in the housing 270, Wherein the thermal decomposition degree is controlled by controlling at least one of the thermal decomposition fuel and the operating atmosphere of the heating unit 240 so that particulate matters are released to the end of the tube 220. [ The present invention provides an PM generator capable of providing PM soot particles having a desired particle size and concentration by controlling the pyrolysis reaction time and temperature while controlling both the gas and the liquid hydrocarbon fuel to an accurate concentration.

Description

[0001] The present invention relates to an apparatus for generating PM using pyrolysis,

More particularly, the present invention relates to a PM generating device using pyrolysis, and more particularly, to an apparatus for generating PM soot particles by mixing a hydrocarbon fuel in a gaseous state into a flow of an inert gas in an evaporator and then supplying an inert gas and a fuel mixer to a high- To a PM generation device using pyrolysis.

In recent years, interest in the environment has increased significantly, and serious concerns about air quality problems have increased.

This is due to the increase of mankind and the soot generated by the massive use of petroleum energy as an energy source in our daily lives.

Especially, the problem of air pollution due to soot particles generated from automobiles and the increase of gas combustion such as heating has reached serious level.

Therefore, it is urgent to study the soot particles generated in the combustion reaction of hydrocarbon fuels which are considered to be the main cause of air pollution.

This is also an opportunity to promote research and development of PM generation devices.

In order to solve such a problem, research and development of a PM generating device that generates soot particles has been increasing recently.

As a part of such research and development, Korean Patent No. 825,515 discloses a soot generating apparatus.

Korean Patent No. 825,515 discloses a soot generating apparatus that generates soot-like carbon soot generated in a diesel engine exhaust. More specifically, a high voltage is applied between two carbon rods to generate a spark discharge And the volatile components of the diesel fuel and the engine oil are evaporated by using a syringe pump and an electric furnace to attach the diesel fuel and the engine oil to the carbon particulate material to generate carbon soot similar to soot generated in the diesel engine exhaust, Generating device.

However, such a conventional PM generator has a problem that it is difficult to control the particle size of PM as a device for generating PM by using a flame.

On the other hand, there is a problem that the conventional PM generator also has difficulties in which the type of fuel used is limited.

In other words, there has been a problem in that the particle size can not be formed in a desired size in studying PM particles using a conventional PM generator.

If a post-treatment system needs to be evaluated in a combustion gas environment for soot particles generated in the combustion reaction of hydrocarbons, a new simulated particle generation system having shapes and components similar to actual soot particles is required.

However, as described above, the conventional soot particle generator only provides soot particles for a specific fuel such as diesel.

On the other hand, in the conventional soot particle generator, since it is difficult to properly obtain the desired particle size as well as the specific particle size, there has been a problem that it is not helpful to study the soot particles suitable for the characteristics.

Korean Patent No. 825,515

SUMMARY OF THE INVENTION The present invention has been made in order to overcome the problems of the prior art as described above, and it is an object of the present invention to provide a method for producing PM particles having desired characteristics while controlling the size and concentration of PM particles using various hydrocarbon fuels, And it is an object of the present invention to provide a PM generator.

According to an aspect of the present invention, there is provided an evaporator comprising: an evaporator; And a PM (Particulate Matters) generating unit 200 connected to the evaporator 100. The PM generating unit 200 includes an injector 210 injecting fuel for pyrolysis; A tube 220 communicating with the injection unit 210; A heating unit 240 to which the tube 220 is inserted; The fluid supplied from the evaporator 100 to the particulate matters generator 200 is pyrolyzed in the housing 270, Wherein the thermal decomposition degree is controlled by controlling at least one of the thermal decomposition fuel and the operating atmosphere of the heating unit 240 so that particulate matters are released to the end of the tube 220. [ And a PM generation device using the PM.

In addition, the heating unit 240 is connected to a power source unit and a control unit.

In addition, the heating unit 240 is sealed with a ceramic heat insulating material 230. The PM generating unit using pyrolysis is also included.

In addition, the heating unit 240 may be formed of at least one SIC heater.

The PM generator 200 may further include a thermocouple PM generator using a thermocouple.

In addition, the evaporator 100 includes a first mass flow controller 121 to which the first raw material 111 is supplied; A first heating unit 131 connected to the first mass flow controller 121 to heat the first raw material 111; A second mass flow controller 122 for supplying a second raw material 112; A second heating unit 132 connected to the second mass flow controller 122 to heat the second raw material 112; A third heating unit 133 connected to the second heating unit 132; A pump 140 for supplying liquid fuel to the evaporator 100; And a mixing part for mixing the first raw material 111 having passed through the first heating part 131 and the second raw material 112 having passed through the third heating part 133 to form a pyrolysis fuel And the mixing unit is connected to the PM generating unit 200.

In addition, the first raw material 111 is formed of an inert gas.

In addition, the pump 140 supplies the liquid hydrocarbon fuel to the third heating unit 133, and includes a PM generation apparatus using pyrolysis.

In addition, the pump 140 is a syringe pump, and includes a pyrolytic PM generator.

The present invention also includes a PM generation apparatus using pyrolysis characterized in that a thermocouple is provided in at least one of the first heating unit 131, the second heating unit 132, and the third heating unit 133 .

The present invention as described above has the following effects.

First, there is a strong point that PM soot particles having a desired particle size and concentration can be produced by controlling both the gas and the liquid hydrocarbon fuel at the correct concentration while controlling the pyrolysis reaction time and temperature.

Second, by providing PM soot particles having a desired particle size and concentration, there is an effect which is useful for various studies related to PM soot particles.

Thirdly, the pump is capable of controlling the fine particle size and adjusting the concentration by supplying the liquid hydrocarbon fuel to the third heating unit in a fixed amount.

Fourth, since the pump can be formed by a syringe pump, it has an advantage that it can be supplied with a precise amount of liquid hydrocarbon fuel.

Fifth, since the structure of the PM generating part is very simple, it is advantageous in that it is compact and excellent in durability.

Sixth, the heating unit of the PM generation unit has an advantage that the temperature can be precisely controlled by the thermocouple, the power supply unit, and the control unit.

Seventh, since the heating section of the PM generating section is finished with the ceramic heat insulator, there is an advantage that the internal heat can be more reliably thermally decomposed without flowing out to the outside.

Eighth, since the heating part of the PM generating part can be constituted by at least one SIC heater formed thereon, the structure is simple and the pyrolysis efficiency is increased.

Ninthly, since a thermocouple can be included in at least one of the heating units provided in the evaporator, there is a strong point that it is possible to form a temperature condition capable of smoothly providing an inert gas and fuel to the PM generator.

1 is a whole conceptual view according to a preferred embodiment of the present invention.
2 is a cross-sectional view of a PM generator according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, the definitions of these terms should be described based on the contents throughout this specification.

1 is a conceptual view of a vaporizer 100 according to a preferred embodiment of the present invention.

2 is a cross-sectional view of a PM generator 200 according to a preferred embodiment of the present invention.

The evaporator 100 has a first mass flow controller 121 to which the first raw material 111 is supplied.

The first heating unit 131 is connected to the first mass flow controller 121 to heat the first raw material 111.

The second mass flow controller 122 supplies the second raw material 112.

The second heating part 132 is connected to the second mass flow controller 122 to heat the second raw material 112.

The third heating part 133 is connected to the second heating part 132.

The third heating part 133 is preferably formed of a vaporizing part and a heating part composite.

The pump 140 provides liquid fuel to the evaporator 100, which is preferably a liquid hydrocarbon fuel, i.e., a liquid hydrocarbon fuel.

In the mixing part (not shown), the first raw material 111 having passed through the first heating part 131 and the second raw material 112 having passed through the third heating part 133 are mixed with each other to form a pyrolysis fuel .

The mixing unit (not shown) is connected to the PM generation unit 200.

More specifically, the first raw material 111 is preferably formed of an inert gas.

It would also be desirable for the inert gas to be nitrogen gas.

More preferably, the pump 140 is formed by a syringe pump 140.

The PM generation unit 200 has an injection unit 210 into which the fuel for pyrolysis is injected.

The tube 220 communicates with the injection unit 210 and is provided inside the housing 270 of the PM generation unit 200.

The tube 220 is preferably formed of a ceramic tube.

The heating portion 240 is formed with the tube 220 inserted therein.

The housing 270 is provided with the heating portion 240 inserted therein.

PM soot particles are discharged to the end of the tube 220.

The heating unit 240 is connected to a power unit (not shown) and a control unit (not shown). The heating unit 240 is preferably operated at a temperature of about 1200 degrees Celsius to about 1400 degrees Celsius.

It is also highly desirable that the heating portion 240 be sealed with the ceramic insulating material 230.

Meanwhile, it is preferable that the heating unit 240 is formed of at least one SIC heater (silicon carbide heater).

The PM generating unit 200 preferably includes the thermocouple 250 to form a PM soot particle forming condition in cooperation with a power source unit (not shown) and a control unit (not shown).

It is preferable that the thermocouples 151, 152, and 153 are provided in at least one of the first heating unit 131, the second heating unit 132, and the third heating unit 133.

The construction of the evaporator 100 of the present invention will be described in more detail with reference to FIG.

The first raw material 111 is preferably formed of an inert gas and is supplied to the first mass flow controller 121.

Since the first mass flow controller 121 is connected to the first heating unit 131, the first material 111 provided by the first mass flow controller 121 is heated.

The second raw material 112 is supplied to the second mass flow controller 122, and may be composed of a transfer gas or fuel.

The second raw material 112 is heated by the second heating section 132 and then transferred to the third heating section 133.

The pump 140 may be a syringe pump (syringe pump) 140.

The pump 140 supplies the liquid hydrocarbon fuel to the third heating unit 133 while accurately controlling the flow rate of the liquid hydrocarbon fuel to a very small amount.

The third heating section 133 instantaneously evaporates the liquid hydrocarbon fuel provided by the pump 140. [

On the other hand, the third heating unit 133 may include an evaporator.

The first raw material 111 heated by the first heating part 131, that is, an inert gas such as nitrogen is mixed with the liquid hydrocarbon fuel heated in the third heating part 133 in the mixer to supply the pyrolysis fuel to the PM generating part 200).

The fuel for pyrolysis, which is a mixture of the inert gas and the liquid hydrocarbon fuel mixed in the mixer, sets the reaction time at which the PM generator 200 generates pyrolysis.

The PM generating unit 200 generates pyrolysis of hydrocarbons at a high temperature, thereby producing PM particulate matters having a desired size and concentration and discharging the particulate matters to the outside.

In other words, the fluid supplied from the evaporator 100 to the PM generator 200 is pyrolyzed in the housing 270, and at least one of the pyrolysis fuel and the operating atmosphere of the heating unit 240 is controlled by the controller, PM particulate matter having a size and a concentration can be obtained.

2 is a cross-sectional view of a PM generator 200 according to a preferred embodiment of the present invention.

The PM generation unit 200 has an injection unit 210 into which the fuel for pyrolysis is injected.

The injection part 210 is injected with a fuel for pyrolysis, which is a mixture of an inert gas and a liquid hydrocarbon fuel.

The inert gas and the fuel mixture supplied from the evaporator pass through the ceramic tube 220 provided in the high temperature furnace inside the housing 270 of the PM generator 200 and undergo the hydrocarbon pyrolysis process at the set high temperature condition to generate PM soot particles .

The tube 220 is connected to the injection part 210 and the end of the tube 220 is formed with a discharge port 260 communicating with the outside.

Tube 220? It is also preferable that the ceramic tube 220 is formed.

The heating unit 240 is formed to surround the outer circumference of the tube 220 and the thermocouple 250 is provided around the tube 220.

It is also preferable that the heating unit 240 is formed of a SIC heater (silicon carbide heater), and the temperature of the heating unit 240 is preferably set to 1200 degrees Celsius or more and 1400 degrees Celsius or less.

It becomes possible to obtain desired PM particles at a temperature of not less than 1200 DEG C and not more than 1400 DEG C.

The heating unit 240 is controlled to operate in conjunction with a power unit (not shown) and a control unit (not shown), and operates in conjunction with the thermocouple 250.

It is also preferable that the ceramic heat insulator 230 is formed so as to surround the outer periphery of the housing 270 of the PM generating part 200.

In other words, the high temperature furnace included in the housing 270 is provided with a plurality of SIC heaters (silicon carbide heaters) mounted in a space sealed by the ceramic heat insulating material 230 to transmit heat.

The temperature of the inside of the high-temperature furnace where pyrolysis occurs is controlled by the thermocouple 250, the power supply unit (not shown) and the control unit (not shown).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

100:
111: First raw material
112: Second raw material
121: first mass flow controller
122: second mass flow controller
131: first heating section
132: second heating section
133: Third heating section
140: pump
151, 152, 153, 250: thermocouple
200: PM generator
210:
220: tube
230: Ceramic insulation
240:
260: Outlet
270: housing

Claims (10)

An evaporator 100;
And a particulate matter (PM) generating unit 200 connected to the evaporator 100,
The PM generating unit 200 includes:
An injection unit 210 into which fuel for pyrolysis is injected;
A tube 220 communicating with the injection unit 210;
A heating unit 240 to which the tube 220 is inserted;
And a housing (270) into which the heating unit (240) is inserted,
The fluid supplied from the evaporator 100 to the particulate matters generator 200 is pyrolyzed in the housing 270,
The degree of thermal decomposition is controlled by controlling at least one of the fuel for pyrolysis and the operating atmosphere of the heating unit 240,
Particulate matters (PM) are discharged to the end of the tube 220,
The evaporator (100)
A first mass flow controller 121 to which the first raw material 111 is supplied;
A first heating unit 131 connected to the first mass flow controller 121 to heat the first raw material 111;
A second mass flow controller 122 for supplying a second raw material 112;
A second heating unit 132 connected to the second mass flow controller 122 to heat the second raw material 112;
A third heating unit 133 connected to the second heating unit 132;
A pump 140 for supplying liquid fuel to the evaporator 100;
And a mixing part for mixing the first raw material 111 having passed through the first heating part 131 and the second raw material 112 having passed through the third heating part 133 to form a pyrolysis fuel ,
Wherein the mixing portion is connected to the PM generating portion (200)
PM generation device using pyrolysis.
The method according to claim 1,
The heating unit 240,
A power supply unit, and a control unit.
PM generation device using pyrolysis.
The method according to claim 1,
The heating unit 240,
Characterized in that it is sealed with a ceramic insulating material (230)
PM generation device using pyrolysis.
The method according to claim 1,
The heating unit 240,
(Silicon carbide heater) which is formed at least one or more of the SIC heater (silicon carbide heater).
PM generation device using pyrolysis.
The method according to claim 1,
The PM generating unit 200 includes:
Further comprising a thermocouple.
PM generation device using pyrolysis.
delete The method according to claim 1,
The first raw material (111)
Characterized in that it is formed of an inert gas.
PM generation device using pyrolysis.
The method according to claim 1,
The pump (140)
And the liquid hydrocarbon fuel is supplied to the third heating unit (133).
The method according to claim 1,
Characterized in that the pump (140) is a syringe pump.
PM generation device using pyrolysis.
The method according to claim 1,
Wherein at least one of the first heating part (131), the second heating part (132), and the third heating part (133) is provided with a thermocouple.
PM generation device using pyrolysis.

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