KR101755872B1

KR101755872B1 - Apparatus for produce of reforming coal

Info

Publication number: KR101755872B1
Application number: KR1020150150613A
Authority: KR
Inventors: 장동민; 이운재; 서영대; 이상열
Original assignee: 주식회사 포스코
Priority date: 2015-10-29
Filing date: 2015-10-29
Publication date: 2017-07-10
Also published as: KR20170051558A

Abstract

The apparatus for manufacturing modified coal according to the present invention is a device for producing a modified coal usable for a steelmaking process, comprising: a raw coal hopper for storing a first raw material composed of non-ferrous metal; A polymer hopper for storing a second raw material composed of a polymer material; A mixer for supplying a first raw material and a second raw material from the raw coal hopper and the polymer hopper to produce a solid mixture; A reaction part in which a mixture is supplied from the mixer, the mixture is heated to separate into a paste phase and a gas phase, and a paste phase is discharged through the pressure of the gas generated in the mixture; And an injection part for shaping and cooling the pasted mixture discharged from the reaction part and processing it into a pellet shape.

Description

[0001] APPARATUS FOR PRODUCE OF REFORMING COAL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a modified coal producing apparatus, and more particularly, to a modified coal producing apparatus for continuously producing a modified coal by mixing a non-veined carbon and a high molecular weight material.

The production of bituminous coal, especially used for coke production, has been on a declining trend globally, and the price of bituminous coal is steadily increasing accordingly. In order to overcome this problem, researches are being conducted to produce coke using non-ferrous metals such as lignite and anthracite, which are relatively inexpensive compared to bituminous coal.

However, lignite and anthracite are less cohesive than bituminous coal, and there is a problem that volatile substances of aromatic are too much or too small compared to bituminous coal. Therefore, in the past, the use of such non-veined-carbon steels was limited in applications other than the purpose of controlling the degree of carbonization of the compounded carbon.

On the other hand, polymer materials such as waste plastics are not easily decomposed in the natural world, and they are regarded as a main cause of environmental pollution. However, thermoplastic plastics have a low melting point and are easily melted, so they have excellent cohesion and contain a large amount of aromatic materials.

Therefore, if the coal is reformed using the non-galvanized iron and plastic, it can be made into coke by using it.

(Japanese Patent Registration No. 3995496 (Aug. 10, 2007)) discloses a method of adding waste plastics to pulverized coal and mixing the pulverized coal, followed by pressure molding to produce coarse aggregate.

However, the above-mentioned invention uses pulverized coal for coke, which is not a non-veggie coal, and does not disclose the constitution of the apparatus, and it is impossible to carry out a continuous process.

Therefore, there is a need for a new coal reforming apparatus capable of performing a continuous reforming process.

Japanese Patent No. 3995496 (Aug. 10, 2007)

It is an object of the present invention to provide a modified coal producing apparatus for producing a modified coal by mixing non-coking coal and waste plastics.

In order to accomplish the above object, a modified coal manufacturing apparatus according to an embodiment of the present invention is an apparatus for manufacturing a modified coal that can be used in a steel making process, comprising: a raw coal hopper for storing a first raw material made of non- A mixer for supplying a first raw material and a second raw material from the raw coal hopper and the polymer hopper to produce a solid mixture, a mixer for supplying the mixture from the mixer, heating the mixture, A reaction part in which the paste phase and the gas phase are separated and the process of discharging the paste phase through the pressure of the gas generated in the mixture is continuously performed and the paste mixture which is discharged from the reaction part is formed and cooled to form pellets Wherein the reaction part is formed in a closed chamber shape and includes a first raw material and a second raw material A reaction chamber in which the mixture is heated and separated into a paste phase and a gaseous phase, a combustion chamber for providing heat to heat the reaction furnace, and a combustion chamber connected between the upper end of the reaction furnace and the combustion chamber, A heating unit including a recycle line for supplying the mixture to the combustion chamber; a supply line inserted into the reactor from the outside to feed the mixture supplied from the mixer into the reactor; A feed valve for controlling the flow of the mixture flowing through the feed line, and a feed valve for controlling the flow of the paste-like mixture flowing through the feed line, A recycling valve for controlling the flow of the gas flowing through the recycling line, Wherein the control unit opens the supply valve and closes the discharge valve and the recycle valve when the internal pressure of the reactor is lower than a first reference value, When the internal pressure of the reactor is between a first reference value and a second reference value, the supply valve and the discharge valve are opened and the recycle valve is closed, and when the internal pressure of the reactor exceeds a second reference value, The valve and the recycling valve are opened and the supply valve is closed.

The end of the supply line and the discharge line located inside the reaction furnace are installed so as to be submerged in the pasted mixture, and the gas generated in the reaction furnace pressurizes the surface of the pasted mixture, And is discharged to the outside of the reaction furnace through the discharge line.

The heating unit may include a heating chamber installed to surround the outer surface of the reaction furnace and supplied with heated gas from the combustion chamber to heat the mixture from the outside of the reaction furnace and a heating chamber installed inside the reaction furnace in a zigzag shape And a heating pipe which receives the heated gas from the heating chamber and heats the mixture from the inside of the reaction furnace.

The heating pipe is connected to the heating chamber at one end thereof to receive the heated gas, and the other end thereof penetrates and protrudes to the outside of the reaction furnace to discharge the heated gas.

The heating unit may further include a fuel line for supplying fuel to the combustion chamber.

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The reaction unit may further include a stirrer installed in the reaction furnace so as to be rotated so as to more uniformly mix the mixture introduced into the reaction furnace and promote the pasteification of the mixture.

Wherein the first raw material comprises at least one of anthracite coal and lignite and the second raw material comprises at least one of HDPE, LDPE, PP, PET, PS, and biopolymer .

The modified coal producing apparatus according to the present invention has the following effects.

First, since the paste-like mixture is continuously produced by injection molding, the manufacturing efficiency is superior to the batch type process.

Second, cost savings can be achieved by using cheap lignite and anthracite as raw materials for coke instead of expensive bituminous coal.

Third, waste plastic can be recycled to prevent environmental pollution.

Fourth, the combustible gas separated from the mixture can be recycled as a heat source to save energy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing the entire layout of a coal reforming apparatus according to the present invention;
2 is a view showing a reaction part according to the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a modified coal manufacturing apparatus according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

(HDPE, LDPE, PP, PET, PS, etc.) and all kinds of polymeric materials including biopolymers by dispersing the non-magnetic metal (lignite, anthracite, etc.) It is a device to make modified coal suitable for coke production by reacting with material. The modified coal thus produced can be used in place of the coke which can be used in the steel making process.

For this, as shown in FIG. 1, a raw coal hopper 21 for storing a first raw material composed of non-gold metal, a polymer hopper 22 for storing a second raw material composed of a polymer material, a raw coal hopper 21, A mixer 30 for supplying a first raw material and a second raw material in a hopper 22 to produce a solid mixture, a mixer 30 for supplying the mixture, heating the mixture to separate into a paste phase and a gaseous phase , A reaction part (100) in which a process of discharging the paste phase through the pressure of the gas generated in the mixture is continuously performed, and an injection part (100) in which the pasted mixture discharged from the reaction part (100) (40).

The reaction unit 100 will be described later in more detail, and the rest of the components will be described first. The polymer hopper 22 and the raw coal hopper 21 can use a hopper for storing common solid raw materials. Although not shown, a quantitative dispenser for controlling the amount of raw material discharged from each hopper and controlling the input ratio of the first raw material and the second raw material may be provided.

The mixer 30 is configured to mix the first raw material and the second raw material to form a mixture, and the oil adder 31 for supplying the oil may be further provided. The oil supplied from the oil adder 31 may be oil generated from the coke making process, waste oil for industrial use, or a lubricant, which serves to reduce the frictional force of the mixture to help smooth transportation, And serves as an additive for lowering the melting point.

The injection part 40 is configured to receive the paste-like mixture in the reaction part 100, to form the pellet-shaped mixture, and to cool the reformed coal. The detailed configuration for this purpose is not particularly limited, but it may be preferable to use air cooling or an indirect water cooling method rather than a method of directly injecting cooling water. This is to improve the quality by preventing the moisture content of the reformed coal from being increased.

In addition, the apparatus may further include a raw material crusher 11 and a polymer crusher 12 for crushing and crushing the first raw material and the second raw material into the raw coal hopper 21 and the polymer hopper 22.

When the particle sizes of the first raw material and the second raw material are excessively large, the mixing operation is not properly performed in the mixer 30, so that the raw material crusher 11 and the polymer crusher 12 are installed.

The reaction unit 100 includes a reaction chamber 110 formed in a closed chamber shape and supplied with the mixture from the mixer 30 and pressurized and heated to a paste state and a heating unit A feed line for feeding the mixture from the mixer 30 to the reaction furnace 110 and a discharge line 152 for discharging the mixture pasted in the reactor 110. [

The reactor 110 is a place where pasting of the mixture, which is a core function of the present invention, is performed. When the reaction furnace 110 is heated at a temperature of 300 to 450 DEG C at which the polymer is melted but the non-ferrous metal is not melted, the molten polymer flows into the gap between the non-ferrous metals and becomes a fluid paste. Also, in this process, the volatile matter and moisture contained in the non-veined carbon and the polymer are evaporated. Accordingly, the paste-like mixture accumulates in the lower part of the reaction furnace 110, and the vaporized gas accumulates in the upper part of the reaction furnace 110. As the amount of the vaporized gas increases, the internal pressure of the reaction furnace 110 is increased. In order to facilitate the pasteification reaction, it is desirable to maintain the internal pressure of the reaction furnace 110 at about 5 to 10 bar. The pressure thus formed is used to discharge the paste-like mixture to the outside of the reaction furnace 110.

The paste-like mixture thus has high fluidity and high cohesiveness. In this case, the weight ratio of the non-magnetic metal to the polymer is preferably 1: 0.05 to 0.20. If the amount of the polymer is too small, the fluidity and the integrity of the mixture can not be secured. If the amount of the polymer is too large, the density of the modified coal is lowered and the amount of heat is decreased. In addition, there is a problem that the cost increases due to an increase in a relatively expensive polymer material.

The supply line 151 and the discharge line 152 are installed to penetrate from the outside to the inside of the reaction furnace 110. At this time, It should be installed so that it is immersed in the mixture.

By positioning the supply line 151 and the discharge line 152 below the mixture bath surface, it is possible to prevent the gas inside the reaction furnace 110 from being discharged through the supply line 151 and the discharge line 152, Thereby maintaining the internal pressure of the reaction furnace 110.

A mixture of the first raw material and the second raw material mixed in the mixer 30 is conveyed to the inside of the supply line 151. Since the mixture at this time is in a solid state, many voids exist. Therefore, the end of the supply line 151 is immersed in the pasted mixture to prevent backflow of the gas in the reaction furnace 110.

In addition, by preventing the gas inside the reaction furnace 110 from being discharged through the discharge line 152, only the paste-like mixture can be discharged through the discharge line 152. When the internal pressure of the reaction furnace 110 pressurizes the bath surface of the mixture, the paste-like mixture is discharged to the discharge line 152 by using this pressure.

The heating unit 120 includes a combustion chamber 131 for burning fuel to provide heat therein, a heating chamber 121 for an external heating coil surrounding the outer surface of the reaction furnace 110, And an installed internal heating chain heating pipe 122.

The gas heated in the combustion chamber 131 is supplied to the heating chamber 121 to primarily heat the outside of the reaction furnace 110 and to heat the outside of the heating furnace 121 communicated with the heating chamber 121, The heated gas is supplied to the reaction chamber 122 and the interior of the reaction furnace 110 is secondarily heated. By heating the inside and the outside simultaneously, it is possible to melt the polymer more quickly and with high efficiency, and to accelerate the paste formation of the mixture.

In order to increase the thermal efficiency, the heating pipe 122 is installed in a zigzag shape inside the reaction furnace 110. One end of the heating pipe 122 is connected to the heating chamber 121 to receive the heated gas. The other end of the heating pipe 122 penetrates to the outside of the reaction furnace 110, .

The fuel supplied to the combustion chamber 131 is supplied through a fuel line 134 connected to the combustion chamber 131 and a recycling line 133 connecting between the reaction furnace 110 and the combustion chamber 131. The combustible gas contained in the gas generated inside the reaction furnace 110 is transferred to the combustion chamber 131 through the recycling line 133 and is combusted It is possible to generate additional heat.

A supply valve 161, a discharge valve 162 and a recycle valve 163 are provided in the three lines of the supply line 151, the discharge line 152 and the recycle line 133, Can be controlled. Each of these valves is controlled by a control unit (not shown).

The control unit opens the supply valve 161 and closes the discharge valve 162 and the recycle valve 163 when the internal pressure of the reaction furnace 110 is less than the first reference value. Thereby continuously supplying the mixture into the reaction furnace 110 and preventing the discharge of the pasted mixture, thereby raising the pressure inside the reaction furnace 110.

In addition, when the internal pressure of the reaction furnace 110 is between the first reference value and the second reference value, the supply valve 161 and the discharge valve 162 are opened and the recycle valve 163 is closed. Whereby the mixture is continuously fed under normal pressure conditions, and the pasted mixture is discharged. Whereby the process of pasting the mixture can be carried out continuously.

Finally, when the internal pressure of the reaction furnace 110 exceeds the second reference value, the discharge valve 162 and the recycle valve 163 are opened and the supply valve 161 is closed. This prevents the internal pressure of the reaction furnace 110 from rising excessively. The gas in the reaction furnace 110 is transferred to the combustion chamber 131 and the paste-like mixture is discharged to reduce the internal pressure of the reaction furnace 110.

The reaction part 100 may further be provided with an agitator 141. The stirrer 141 is a blade installed to rotate at a lower portion of the inner space of the reaction furnace 110. The stirrer 141 is rotated by a rotating means 142 installed outside the reaction furnace 110 and rotated, Mixing the mixture and promoting the melting of the polymer material.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .

11: Bulk material crusher 12: Polymer crusher
21: raw coal hopper 22: polymer hopper
30: Mixer 31: Oil additive
40: injection part 100: reaction part
110: reactor furnace 120: heating section
121: heating chamber 122: heating pipe
131: combustion chamber 132: heat supply pipe
133: Recycling line 134: Fuel line
140: stir part 141: stirrer
142: rotation means 151: supply line
152: discharge line 161: supply valve
162: discharge valve 163: recycle valve
NC: Non-metallic gold P: Polymer material
C: Modified coal

Claims

An apparatus for producing a reformed coal usable in a steel making process,
A raw coal hopper for storing a first raw material composed of non-metallic carbon;
A polymer hopper for storing a second raw material composed of a polymer material;
A mixer for supplying a first raw material and a second raw material from the raw coal hopper and the polymer hopper to produce a solid mixture;
A reaction part in which a mixture is supplied from the mixer, the mixture is heated to separate into a paste phase and a gas phase, and a paste phase is discharged through the pressure of the gas generated in the mixture; And
And an injection part for shaping and cooling the paste-like mixture discharged from the reaction part to be processed into a pellet shape,
The reaction unit includes a reaction chamber which is formed in a closed chamber shape and in which a mixture of the first and second raw materials is heated and separated into a paste phase and a gaseous phase, a combustion chamber which provides heat to heat the reaction furnace, And a recycling line connecting the upper end of the reaction furnace and the combustion chamber to supply the gas generated in the reaction furnace to the combustion chamber; A feed line for feeding the pasted mixture prepared in the reaction furnace to the inside of the reaction furnace, and a feed line for feeding the pasted mixture prepared in the reaction furnace to the inside of the reaction furnace; A discharge valve for controlling the flow of the pasted mixture flowing through the discharge line, And a recycling valve that controls the flow of gas to flow to recycle line, and including the supply valve, said discharge valve, a control unit for controlling the recycling valve,
Wherein the control unit opens the supply valve and closes the discharge valve and the recycle valve when the internal pressure of the reaction furnace is less than the first reference value, and when the internal pressure of the reaction furnace is between the first reference value and the second reference value The supply valve and the discharge valve are opened, the recycle valve is closed, and when the internal pressure of the reaction furnace exceeds a second reference value, the discharge valve and the recycle valve are opened and the supply valve is closed. A modified coal production apparatus.

The method according to claim 1,
The ends of the supply line and the discharge line located inside the reaction furnace are installed so as to be submerged in the paste-like mixture,
Wherein the gas generated in the reactor pressurizes the surface of the paste-like mixture to discharge the paste-like mixture out of the reactor through the discharge line.

The method of claim 2,
The heating unit may include a heating chamber installed to surround the outer surface of the reaction furnace and supplied with heated gas from the combustion chamber to heat the mixture from the outside of the reaction furnace and a heating chamber installed inside the reaction furnace in a zigzag shape And a heating pipe for supplying the heated gas from the heating chamber and heating the mixture from the inside of the reactor.

The method of claim 3,
Wherein one end of the heating pipe is connected to the heating chamber to receive the heated gas and the other end of the heating pipe penetrates and protrudes to the outside of the reaction furnace to discharge the heated gas.

The method of claim 4,
Wherein the heating section further comprises a fuel line for supplying fuel to the combustion chamber.

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The method of claim 2,
Wherein the reaction section further comprises an agitator which is installed in the reaction furnace so as to be rotated so as to mix the mixture introduced into the reaction furnace more uniformly and to accelerate the pasteification of the mixture.

The method according to claim 1,
Wherein the first raw material comprises at least one of anthracite coal and lignite,
Wherein the second raw material comprises at least one of HDPE, LDPE, PP, PET, PS and a biopolymer.