KR101616975B1 - Coal Gasifier - Google Patents

Coal Gasifier Download PDF

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Publication number
KR101616975B1
KR101616975B1 KR1020110079258A KR20110079258A KR101616975B1 KR 101616975 B1 KR101616975 B1 KR 101616975B1 KR 1020110079258 A KR1020110079258 A KR 1020110079258A KR 20110079258 A KR20110079258 A KR 20110079258A KR 101616975 B1 KR101616975 B1 KR 101616975B1
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KR
South Korea
Prior art keywords
oxidant
supply line
pulverized coal
oxidant supply
angle
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KR1020110079258A
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Korean (ko)
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KR20130017016A (en
Inventor
박세익
이중원
지준화
서혜경
Original Assignee
한국전력공사
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Priority to KR1020110079258A priority Critical patent/KR101616975B1/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

Abstract

Suggest coal gasifier. A coal gasifier for reacting pulverized coal and oxidizer in a coal gasification combined cycle power generation system includes a chamber provided with a reaction space for pulverized coal and an oxidant in the chamber, a pulverized coal supply line for supplying pulverized coal to the chamber, A first oxidant supply line for supplying an oxidant to the chamber through a first oxidant supply line and a second oxidant supply line for supplying an oxidant to the chamber by inclining the second oxidant supply line at a second angle, An oxidant supply amount adjusting unit for adjusting an amount of oxidant supplied to the supply line and the second oxidant supply line, a motor provided in the burner for supplying power to the oxidant supply amount adjusting unit, and a motor, And a control unit for changing the supply angle of the gas.

Description

{Coal Gasifier}

The present invention relates to a coal gasifier.

As a next generation power generation system using coal, Integrated Gasification Combined Cycle (IGCC) is proposed as an alternative.

From the viewpoint of high cleanliness and environmental friendliness, coal gasification combined cycle power generation facilities can greatly reduce emissions of sulfur oxides, nitrogen oxides, and dusts compared with conventional coal-fired thermal power generation systems. In addition, the coal gasification combined cycle power plant collects ash in the form of slag after being melted, not in dust form, so it is environmentally safe, and the sulfur (S) element produced in the slag and desulfurization process is recovered It has the advantage of being used as an economical by-product.

Such a coal gasification combined cycle power generation system includes a gasifier for extracting coal gas by reacting pulverized coal and an oxidizer at high pressure. Here, the gasifier is supplied with the pulverized coal through the burner in an air stream transportation method, and reacts with the oxidizer. The reaction position and the slag generation temperature in the gasifier are changed according to the direction in which the oxidizer is supplied. Therefore, stable operation of the gasifier is difficult.

Korean Patent Publication No. 10-2010-0048212

SUMMARY OF THE INVENTION It is an object of the present invention to provide a coal gasifier that changes the injection angle of an oxidizer supplied to a gasifier and moves the combustion zone in the gasifier to adjust the internal temperature of the gasifier for treating the slag.

According to an aspect of the present invention, there is provided a coal gasifier.

In a coal gasification combined cycle power generation system, a coal gasifier for reacting pulverized coal and an oxidizer is provided with a chamber provided with a reaction space for pulverized coal and an oxidant, a pulverized coal supply line for supplying pulverized coal to the chamber, A first oxidant supply line for supplying an oxidant to the chamber through a first oxidant supply line and a second oxidant supply line for supplying an oxidant to the chamber by inclining the second oxidant supply line at a second angle, An oxidant supply amount adjusting unit for adjusting an amount of oxidant supplied to the supply line and the second oxidant supply line, a motor provided in the burner for supplying power to the oxidant supply amount adjusting unit, and a motor, And a control unit for changing the supply angle of the gas.

The coal gasifier according to an embodiment of the present invention can control the position where the pulverized coal and the oxidizer react with each other by changing the supply angle of the oxidizer in the burner. The coal gasifier according to one embodiment of the present invention can actively control the operating temperature inside the gasifier by changing the supply angle of the oxidizer. Therefore, the coal gasifier according to the embodiment of the present invention can effectively set the temperature condition for the slag treatment according to the type of coal.

1 is a view showing a configuration of a coal gasifier according to an embodiment of the present invention.
2 is a cross-sectional view of a burner according to an embodiment of the present invention.
3 is a view illustrating a housing of a burner according to an embodiment of the present invention.
FIG. 4 is a view showing an oxidant supply amount adjusting unit according to an embodiment of the present invention. FIG.
5 is a view showing collision positions of the pulverized coal and the oxidizer with the change of the supply angle of the oxidant.
FIG. 6 is a view showing a temperature change experiment result of a slag forming region according to a change in the supply angle of the oxidizer. FIG.
7 is a cross-sectional view of a burner according to another embodiment of the present invention.
8 is a view showing an oxidant supply amount adjusting unit according to another embodiment of the present invention.
FIGS. 9 to 12 are views for explaining the operation of the oxidant supply amount adjusting unit according to another embodiment of the present invention.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of known related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, a coal gasifier according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a configuration of a coal gasifier according to an embodiment of the present invention.

Referring to FIG. 1, a coal gasifier according to an embodiment of the present invention includes a chamber 100, a burner 110, an oxidizer supply amount regulator 130, a temperature sensor 150, a motor 160, 170 and a control unit 180.

The chamber 100 provides a space in which the pulverized coal and the oxidant react. Here, the chamber 100 may contain the burner 110.

The burner 110 is installed in a chamber 100 of a coal gasifier in a coal gasification combined cycle power generation system, and introduces pulverized coal such as coal and an oxidant such as oxygen into the chamber 100. To this end, the burner 110 may be supplied with the pulverized coal and the oxidant to the pulverized coal supply unit 200 and the oxidant supply unit 300, respectively.

2 to 4, the burner 110 will be described in more detail.

2 is a cross-sectional view of a burner according to an embodiment of the present invention.

3 is a view illustrating a housing of a burner according to an embodiment of the present invention.

2 and 3, the burner 110 may include a housing 111, which is installed in the longitudinal direction and has an oxidizing agent receiving portion 113 for receiving the oxidizing agent inside. The pulverized coal supply pipe 115, which receives pulverized coal from the pulverized coal supplying unit 200, may be coupled to the housing 111. At this time, the pulverized coal supply pipe 115 is connected to the pulverized coal supply line 119 passing through the lower end of the housing 111 inside. The burner 110 may be connected to the oxidizing agent supply unit 300 through the oxidizing agent inlet 117.

The burner 110 includes a first oxidant supply line 121 and a second oxidant supply line 123 which are formed at the lower end of the housing 111 and supply the oxidant supplied from the oxidant storage unit 113 to the chamber 100, ).

The pulverized coal supply pipe 115 may be formed through the burner 110 at an inner center of the burner 110. The pulverized coal supply line 119 may supply pulverized coal to the chamber 100 by an air flow transport system.

The first oxidant feed line 121 may be sloped at a first angle relative to the pulverized coal feed line 119 to supply the oxidant to the chamber 100. Here, a plurality of the first oxidant supply lines 121 may be formed through the lower end of the housing 111. At this time, the first oxidant supply line 121 may be formed at a predetermined interval.

The second oxidant feed line 123 may be fed at an angle to the pulverized coal feed line 119 at a second angle to supply the oxidant to the chamber 100. Here, a plurality of second oxidant supply lines 123 may be formed through the lower end of the housing 111. At this time, the second oxidant supply line 123 may be formed at predetermined intervals.

The first oxidant supply line 121 and the second oxidant supply line 123 may be inclined at different angles with respect to the pulverized coal supply line 119. That is, the first angle and the second angle are different angles. For example, the first angle is about 7 degrees and the second angle is about 16 degrees. Accordingly, the first oxidant supply line 121 and the second oxidant supply line 123 may be formed at different positions on the lower end of the housing 111.

Referring again to FIG. 1, the oxidant supply amount regulator 130 regulates the supply amount of the oxidant supplied through the first oxidant supply line 121 and the second oxidant supply line 123. Here, the oxidant supply amount regulator 130 will be described in more detail with reference to FIG.

FIG. 4 is a view showing an oxidant supply amount adjusting unit according to an embodiment of the present invention. FIG.

4, the oxidant supply amount regulating part 130 includes a gear part 131, a connecting part 133, and a blocking block 135. As shown in FIG.

The gear portion 131 is powered by an external device. Here, the gear portion 131 may have a tooth-like outer surface. Further, the gear portion 131 can be powered by the belt 190 shown in Fig. The gear portion 131 can be rotated in one direction by the provided power. At this time, the gear portion 131 may be formed to have a diameter larger than the diameter of the pulverized coal supply pipe 115 so as to surround the pulverized coal supply pipe 115.

The connecting portion 133 connects the gear portion 131 and the blocking block 135. The connection part 133 may be formed to have a diameter larger than the diameter of the pulverized coal supply pipe 115 so as to surround the pulverized coal supply pipe 115.

The blocking block 135 blocks the inlet of one of the first oxidant feed line 121 and the second oxidant feed line 123. This blocking block 135 regulates the amount of oxidant supplied to one of the first oxidant feed line 121 and the second oxidant feed line 123. The blocking block 135 may be formed to block the openings of the plurality of first oxidant supply lines 121 or the plurality of second oxidant supply lines 123. For example, the blocking block 135 may be formed in a cross shape.

The blocking block 135 may be connected to the gear portion 131 through the connecting portion 133. The blocking block 135 may be rotated in one direction corresponding to the rotation of the gear portion 131. Where the blocking block 135 may rotate in one direction to block the inlet of one of the first oxidant feed line 121 and the second oxidant feed line 123.

Referring again to FIG. 1, the temperature sensor 150 measures the temperature inside the chamber 100 due to the reaction between the pulverized coal and the oxidizing agent. Here, the temperature sensor 150 is installed in the chamber 100, and a plurality of temperature sensors 150 can measure the temperature.

The motor 160 provides power to the oxidant supply amount regulator 130. Here, the motor 160 may be installed in the burner 110 to transmit power to the oxidant supply amount regulator 130. At this time, the motor 160 is installed on one side of the housing 111 and can rotate the gear portion 131 of the oxidant supply amount adjusting portion 130 through the belt 190. The motor 160 may be a step motor that rotates the gear portion 131 by a predetermined amount of rotation.

The slag measuring unit 170 measures the amount of slag generated by the reaction between the pulverized coal and the oxidizing agent. Here, the slag measuring unit 170 may be formed in a container shape to measure the amount of generated slag.

The control unit 180 changes the reaction position of the pulverized coal and the oxidizing agent to control the internal temperature of the chamber 100 for slag formation. Here, the controller 180 may receive temperature and slag generation amount information from the temperature sensor 150 and the slag measuring unit 170 in the chamber 100. The control unit 180 may control the supply amount of the oxidizing agent by using information on the temperature and the slag generation amount in the chamber 100. In particular, the controller 180 controls the motor 160 to control the rotation of the oxidant supply controller 130. For example, the controller 180 may supply a drive control signal to the motor 160 to rotate the cutoff block 135 of the oxidant supply controller 130 by a predetermined angle. The controller 180 may control the rotation of the oxidant supply controller 130 to change the supply angle of the oxidant supplied to the chamber 100. For example, the controller 180 may rotate the blocking block 135 to block the inlet of the first oxidant feed line 121 so that the oxidant is fed through the second oxidant feed line 123 at a second angle, The supply angle can be changed.

5 and 6, the temperature change of the slag forming region due to the change of the supply angle of the oxidizing agent will be described.

5 is a view showing collision positions of the pulverized coal and the oxidizer with the change of the supply angle of the oxidant.

FIG. 6 is a view showing a temperature change experiment result of a slag forming region according to a change in the supply angle of the oxidizer. FIG.

5 and 6, the burner 110 supplies the oxidant through the first oxidant supply line 121 and the second oxidant supply line 123, and collides with the pulverized coal supplied to the pulverized coal supply line 119.

The oxidant supplied through the first oxidant feed line 121 is ejected from the first carbon monoxide feed line 119 by a first oxidant feed line 121 spaced apart from the first oxidant feed line 121 by a first radius r1, It may collide. At this time, the oxidant supplied at the first angle? 1 may be separated from the burner 110 by the first distance L1 and collide with the pulverized coal.

The oxidant supplied through the second oxidant supply line 123 is jetted from the second oxidant supply line 123 separated from the pulverized coal supply line 119 by a second radius r2, . ≪ / RTI > At this time, the oxidant supplied at the second angle? 2 may be separated from the burner 110 by the second distance L2 and collide with the pulverized coal.

Here, the temperature of the slag forming region changes depending on the collision position between the pulverized coal and the oxidizing agent.

As shown in FIG. 6, the temperature of the area where the oxidant supplied at the first angle? 1 collides with the pulverized coal and the slag is formed is represented by the first indication line 210. The temperature of the region where the oxidant supplied at the second angle? 2 collides with the pulverized coal and the slag is formed is represented by the second indication line 220. 6, the horizontal axis represents the position in the chamber 100 and the vertical axis represents the temperature.

Referring to FIG. 6, at an upper position of the chamber 100, slag is formed at a relatively higher temperature than the oxidizer supplied at the first angle? 1 by the oxidant supplied at the second angle? 2, Can be improved. At an intermediate position of the chamber 100, the slag is formed at a relatively higher temperature than the oxidant supplied at the second angle? 2 by the oxidant supplied at the first angle? 1, thereby improving the slag treatment efficiency. At the lower position of the chamber 100, the slag is formed at a relatively higher temperature than the oxidant supplied at the second angle? 2 by the oxidizing agent supplied at the first angle? 1, thereby improving the slag treatment efficiency. At this time, the temperature at which the slag is formed by the oxidant supplied at the first angle? 1 may be about 120 ° C higher than the temperature at which the slag is formed by the oxidant supplied at the second angle? 2.

Referring again to FIG. 1, the control unit 180 changes the oxidant supply angle so as to correspond to the temperature for slag formation as described above. Accordingly, the controller 180 can actively control the operating temperature of the inside of the chamber 100 of the coal gasifier, and can improve the efficiency of the slag treatment and the operation of the coal gasifier even when using the low-grade pulverized coal.

7 is a cross-sectional view of a burner according to another embodiment of the present invention. Here, a duplicate description of the same components as those of the burner shown in Figs. 2 and 3 is omitted.

Referring to FIG. 7, the burner 110 according to another embodiment of the present invention includes an oxidant supply amount regulator 130 coupled to the housing 111.

Here, the housing 111 is formed through a lower end of a pulverized coal supply line 119 connected to the pulverized coal supply pipe 115. In addition, the housing 111 is formed by passing the first oxidant supply line 121 and the second oxidant supply line 123 through the lower end.

The first oxidant feed line 121 may be disposed adjacent to the pulverized coal feed line 119 rather than the second oxidant feed line 123. The first oxidant supply line 121 may be formed in an annular shape around the pulverized coal supply line 119 and may pass through the lower end of the housing 111. At this time, the first oxidant supply line 121 may be formed to be inclined at a first angle to the pulverized coal supply line 119.

The second oxidant supply line 123 may be disposed outside the second oxidant supply line 123 around the pulverized coal supply line 119. A plurality of second oxidant supply lines 123 may be formed in a slit shape and penetrate the lower end of the housing 111.

The oxidant supply amount regulator 130 regulates the supply amount of the oxidant supplied to the first oxidant supply line 121 and the second oxidant supply line 123. The oxidant supply amount regulating unit 130 may be housed in the oxidizer accommodating unit 113 of the burner 110. [ Here, the oxidant supply amount regulator 130 will be described in more detail with reference to FIG.

8 is a view showing an oxidant supply amount adjusting unit according to another embodiment of the present invention.

8, the oxidant supply amount regulating part 130 includes a gear part 131, a connecting part 133 and a blocking block 135. [

The gear portion 131 is powered by an external device. Here, the gear portion 131 may be in the form of a circular plate. The gear portion 131 may have a plurality of tooth grooves 140 on the upper surface of the plate to receive power. The gear portion 131 can be rotated in one direction by a motor 160 installed on the upper portion of the burner 110.

The connecting portion 133 connects the gear portion 131 and the blocking block 135. Here, the connection portion 133 may include a plurality of rods to connect the gear portion 131 and the blocking block 135.

The blocking block 135 blocks the inlet of the second oxidant feed line 123. Where the blocking block 135 may be formed of an annular plate to open the first oxidant feed line 121 and block the second oxidant feed line 123. And the blocking block 135 may include a plurality of openings 150 that open the openings of the second oxidant supply line 123. At this time, the plurality of openings 150 may be formed as holes that pass through the blocking block 135. The blocking block 135 can be rotated in one direction by the rotation of the gear portion 131. And the blocking block 135 may open the inlet of the second oxidant supply line 123 using a plurality of openings 150. [

The adjustment of the supply amount of the oxidizing agent by the oxidizing agent supply amount adjusting unit 130 will be described in detail with reference to FIG. 9 to FIG.

FIGS. 9 to 12 are views for explaining the operation of the oxidant supply amount adjusting unit according to another embodiment of the present invention.

9 to 12, the oxidant supply amount control unit 130 controls the oxidant supply amount adjusting unit 130 in such a manner that the pulverized coal and the oxidant are supplied to the chamber through the pulverized coal supply line 119 and the first oxidant supply line 121, respectively, And the supply amount of the oxidizing agent supplied through the oxidizing agent 123 is controlled. Here, the oxidant supplied at the first angle in the first oxidant feed line 121 may collide with the pulverized coal at the first distance L1. The oxidant supplied at the first angle from the first oxidant supply line 121 collides with the oxidant supplied from the first oxidant supply line 121 and may collide with the pulverized coal at an angle larger than the first angle. Accordingly, the oxidant may collide with the pulverized coal at a position closer to the first distance (L1) with respect to the burner (110). Here, the oxidant supplied at the first angle may be differently decreased in momentum depending on the supply amount of the oxidant supplied at the second angle, and the advancing angle may be changed.

Here, the oxidant may collide with the pulverized coal adjacent to the second distance L2 as the supplied amount of the oxidant supplied from the second oxidant feed line 123 increases. For this reason, the oxidant supply amount regulator 130 may be rotated by the blocking block 135 to control the area where the plurality of openings 150 open the inlet of the second oxidant supply line 123. The oxidant supply amount regulating unit 130 can rotate by an angle set in one direction by the power supplied from the motor 160. [

For example, the oxidant supply amount regulator 130 opens the inlet of the second oxidant supply line 100% by positioning the openings such that all of the openings of the second oxidant supply line 123 are exposed, as shown in FIG. The oxidant supply amount adjusting unit 130 can adjust the supply amount of the oxidant introduced into the second oxidant supply line 123 to be 100%.

11, the opening of the second oxidant supply line 123 is opened by 50%, and the opening of the second oxidant supply line 123 is opened so that only half of the opening of the second oxidant supply line 123 is exposed. The oxidant supply amount regulator 130 can adjust the amount of the oxidant introduced into the second oxidant supply line 123 to 50%.

As shown in FIG. 12, the oxidant supply amount regulator 130 disposes the opening of the second oxidant supply line 123 so that the inlet of the second oxidant supply line 123 is not exposed. The oxidant supply amount regulator 130 can adjust the amount of the oxidant introduced into the second oxidant supply line 123 to 0%.

Meanwhile, the controller 180 according to an embodiment of the present invention performs the supply angle change control logic of the oxidant.

The supply angle change control logic of the oxidant is as follows.

First, the controller 180 inputs a predetermined critical temperature (Tcv) for slag treatment according to the grain type.

Next, the control unit 180 performs the gasification process for generating the coal gas through the reaction of the pulverized coal and the oxidizer for a preset unit time through the coal gasifier.

Next, the controller 180 determines whether the temperature of the slag generation point input from the temperature sensor 150 corresponds to a preset reference temperature range after the operation for a unit time, and then the operation proceeds. Wherein the reference temperature range is set to a temperature range that is about 50 占 폚 higher than the critical temperature and about 150 占 폚 lower than the critical temperature.

Next, when the temperature of the slag generating point is lower than the lower limit of the reference temperature range, the controller 180 receives the slag weight information according to the slag generation amount from the slag measuring unit 170, If the condition is not satisfied, the motor 160 is controlled to rotate the oxidant supply amount adjusting unit 130 to adjust the supply angle of the oxidant.

If the change of the seed species occurs, the control unit 180 sets the critical temperature corresponding to the seed seed, adjusts the supply angle of the oxidant after the gasification process.

The coal gasifier according to an embodiment of the present invention can control the position where the pulverized coal and the oxidizer react with each other by changing the supply angle of the oxidizer in the burner. Further, the coal gasifier according to one embodiment of the present invention can actively control the operating temperature inside the coal gasifier by changing the supply angle of the oxidizer. Therefore, the coal gasifier according to the embodiment of the present invention can effectively set the temperature condition for the slag treatment according to the type of coal.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as falling within the scope of the present invention.

100: chamber
110: Burner
130: oxidant supply amount regulator
150: Temperature sensor
160: Motor
170: slag measuring unit
180:

Claims (7)

A coal gasifier for reacting pulverized coal and an oxidizer in a coal gasification combined cycle power generation system,
A chamber in which a reaction space for the pulverized coal and the oxidant is provided;
A first oxidant supply line installed in the chamber and supplying the pulverized coal to the chamber, a first oxidant supply line inclining the first pulverized coal supply line at a first angle to supply the oxidant to the chamber, A burner provided with a second oxidant supply line which is inclined at an angle to supply the oxidant to the chamber;
An oxidant supply amount adjusting unit installed in the burner and adjusting an amount of oxidant supplied to the first oxidant supply line and the second oxidant supply line by rotation;
A motor installed in the burner to supply power to the oxidant supply amount regulating unit; And
And a control unit for driving the oxidant supply amount adjusting unit through control of the motor to change the supplying angle of the oxidant.
The method according to claim 1,
The oxidant supply amount adjuster
A gear portion that receives power from the motor and rotates;
A block interlocking with the gear portion and rotating and regulating the amount of oxidizing agent supplied by overlapping with the inlet of one of the first oxidizing agent supply line and the second oxidizing agent supply line by rotation; And
And a connecting portion connecting the gear portion and the blocking block.
The method according to claim 1,
The oxidant supply amount adjuster
A gear portion that receives power from the motor and rotates;
A blocking block formed in a ring shape having a center and penetrating the second oxidant supply line and rotating in conjunction with the gear portion to adjust the amount of the oxidant supplied to the second oxidant supply line; And
And a connecting portion connecting the gear portion and the blocking block.
The method of claim 3,
Wherein the blocking block is formed with at least one opening exposing the second oxidant feed line.
The method according to claim 1,
Wherein the first angle is greater than the second angle.
The method according to claim 1,
Wherein the motor is a stepping motor that rotates the oxidant supply amount adjusting unit by a predetermined angle under the control of the control unit.
The method according to claim 1,
The burner
A housing provided with the pulverized coal supply line, the first oxidant supply line, and the second oxidant supply line at a lower end;
A pulverized coal supply pipe coupled to the inside of the housing and supplied with the pulverized coal from the outside; And
And an oxidant inlet coupled to the outside of the housing to receive the oxidant from the outside.
KR1020110079258A 2011-08-09 2011-08-09 Coal Gasifier KR101616975B1 (en)

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KR20180072364A (en) 2016-12-21 2018-06-29 두산중공업 주식회사 Top down gasifier
KR20180073009A (en) 2016-12-22 2018-07-02 두산중공업 주식회사 Down shot multi-stage gasifier
KR20180083297A (en) 2018-07-13 2018-07-20 두산중공업 주식회사 Down shot multi-stage gasifier
KR20180099603A (en) 2018-08-28 2018-09-05 두산중공업 주식회사 Top down gasifier

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KR101472659B1 (en) 2013-02-18 2014-12-12 삼성전기주식회사 Multilayer ceramic device

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Publication number Priority date Publication date Assignee Title
KR20180072364A (en) 2016-12-21 2018-06-29 두산중공업 주식회사 Top down gasifier
KR20180073009A (en) 2016-12-22 2018-07-02 두산중공업 주식회사 Down shot multi-stage gasifier
KR20180083297A (en) 2018-07-13 2018-07-20 두산중공업 주식회사 Down shot multi-stage gasifier
KR20180099603A (en) 2018-08-28 2018-09-05 두산중공업 주식회사 Top down gasifier

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