KR20190002788A - A slag removing device including a separate fluid storage part for removing slag generated in the inner wall of the combustion chamber - Google Patents

Abstract

Disclosed is a slag removing device including a separate fluid storage part for removing slag generated in the inner wall of a combustion chamber. The slag removing device according to an embodiment of the present invention is a slag removing device (10) installed on an inner wall (1) of a combustion furnace having a plurality of pipes (20) for water or steam flow and including a first storage portion (100) connected to the pipe (20) to allow fluid communication and storing the water or steam. The first storage portion (100) includes an inflow portion (110) into which the water or steam flows from the pipe (20); an outflow portion (120) from which the water or steam flows to the pipe (20); an inflow temperature detector (112) installed in the inflow portion (110); an outflow temperature detector (122) installed in the outflow portion (120); and a first nozzle (130) spraying the water or steam stored in the first storage portion (100). From the first nozzle (130), the water or steam stored in the first storage portion (100) is sprayed in accordance with the temperatures detected by the inflow temperature detector (112) and the outflow temperature detector (122).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slag removing device for removing slag generated in an inner wall of a combustion chamber,

The present invention relates to a slag remover, and more particularly, to a slag remover including a separate fluid reservoir for storing a fluid for removing slag generated in a combustion chamber.

The boiler of the coal-fired power plant generates pulverized coal and pulverized solid fuel such as coal, and generates heat by burning it. At this time, a slag may be generated mainly on the upper side of the burner portion located inside the combustion chamber of the boiler (see Fig. 1).

Slag is mainly produced by melting coal ash at high temperature and can be produced not only in coal combustion but also in waste incinerator and biomass boiler using solid fuel.

When slag is generated, the heat transfer inside the combustion chamber is disturbed and the combustion efficiency may be lowered. Also, when the slag grows and is separated from the inner wall of the combustion chamber by an external impact, the channel inside the boiler may be broken, and the operation of the entire boiler may be stopped.

Therefore, in order to prevent slag formation and growth, a method of suppressing slag generation itself or removing the generated slag through slag generation inhibitor or ratio adjustment of fuel and air is utilized.

Particularly, it is important to precisely determine whether the slag produced in the combustion chamber is generated, the position and amount of generated slag, and remove it promptly in order to effectively remove the slag. Therefore, techniques for accurately grasping this have been introduced.

US-A-2007-0119351 discloses a boiler system having a plurality of slag detection sensors. Specifically, slag detection at a specific position is predicted through a separate slag detection sensor for slag detection. If slag generation is expected, adjust the A / F (air / fuel) ratio of the burner or the mass flow rate of the air-fuel flow to suppress slag generation.

However, this type of boiler system has limitations in that it can only be countermeasures because it adjusts the A / F ratio or mass flow rate of the burner when slag generation is expected. In addition, there is a disadvantage that it can not propose a method for effectively removing slag that has already been generated. In addition, the A / F ratio of the burner and the mass flow rate of the air-fuel flow are sensitive to the performance characteristics of the boiler and the power generation system, so that the adjustment is very limited.

As another example, Korean Patent Publication No. 10-1606011 discloses a clinker suppression apparatus using a clinker inhibitor. Specifically, it includes a separate clinker inhibitor supply, a control and a reservoir, and supplies a clinker inhibitor upon combustion to control clinker generation in advance.

However, this kind of clinker suppression device has limitations in that it can only be a post-countermeasure because it adjusts and supplies the clinker inhibitor according to the fuel adjustment such as coal when the clinker generation is expected. In particular, it has a disadvantage that it is inefficient because it can not clearly grasp the position where the clinker is generated, and it has a disadvantage that it can not propose a method for effectively removing the clinker already generated.

In order to overcome the above-mentioned problems, techniques for removing already produced slag have been introduced.

Korean Patent Registration No. 10-1415816 discloses a slagging measuring apparatus and a measuring method provided with a separate slagging panel. Specifically, a slagging panel is installed on the inner wall of the combustion chamber of the boiler, and the viscosity of the slagging flowing on the panel is measured and predicted. When the amount of slagging exceeds the reference value, heating air is supplied to the slagging panel to melt and remove the slag.

However, this type of slagging measuring apparatus requires a separate slagging panel, and separately requires an air supply unit and an air heating unit for supplying heated air to the panel. In addition, even when slagging is generated only in a part of the slagging panel, the heating air must be supplied to the entire slagging panel, resulting in a disadvantage that the removal efficiency is lowered.

As another example, Japanese Laid-Open Patent Publication No. 1996-121737 discloses a slag removing apparatus having a separate water-cooling panel. Specifically, the cooling water is flowed into the separate water-cooling panel, and when the slag adheres to the water-cooling panel, impact is applied to the water-cooling panel or steam is sprayed onto the surface of the water-cooling panel to remove the slag.

However, this type of slag removing apparatus requires a separate water-cooling panel, and additional additional equipment such as a cooling water supply unit for supplying cooling water, a steam supply unit for spraying the water-cooling panel, and a vibration unit for impacting the water- There is a disadvantage that it is required a lot. In addition, even when the slag is generated only in a part of the water-cooled panel, it is necessary to apply an impact to the entire water-cooled panel, and when impact is applied to the water-cooled panel, the inner wall of the combustion chamber provided with the water-

U.S. Published Patent Application No. 2007-0119351 (May 31, 2007) Korean Patent Registration No. 10-1415816 (2014.06.30) Japanese Patent Laid-Open Publication No. 1996-121737 (May 17, 1996) Korean Patent Registration No. 10-1606011 (2013.03.18)

SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a method and apparatus for accurately and quickly determining whether or not a slag is generated, a position and a generation amount of slag, efficiently removing generated slag, And to provide a slag removing device that can utilize the fluid of the water pipe wall in the inside of the combustion chamber of the boiler as much as possible.

In order to achieve the above object, the present invention provides a slag removing apparatus (10) installed in a combustion furnace inner wall (1) where a plurality of pipes (20) through which water or steam flows are formed, The first storage part 100 includes a first storage part 100 and a second storage part 100. The first storage part 100 is connected to the inflow part 110 through which the water or steam is introduced from the pipeline 20, ); An outlet (120) through which the water or steam flows to the conduit (20); An inlet temperature sensor 112 installed at the inlet 110; An outflow temperature sensor 122 installed at the outlet 120; And a first nozzle 130 through which the water or steam stored in the first storage unit 100 is injected. The first nozzle 130 is connected to the inflow temperature sensor 112 and the outflow temperature sensor 122 The water or steam stored in the first storage part 100 is sprayed.

Whether or not the slag is generated can be determined by using the difference between the temperatures sensed by the influent temperature sensor 112 and the outflow temperature sensor 122.

A plurality of pipelines 20 are connected to one first storage unit 100 so that a plurality of the inflow units 110 or the outflow units 120 are formed, A temperature sensor 112 is installed and the outflow temperature sensor 122 may be installed for each of the outflows 120 formed.

The injection angle or injection amount of the water or steam injected from the first nozzle 130 can be adjusted.

And a water supply unit 140 for supplying the water or steam to the first storage unit 100.

And a second storage part 200 storing an additive for softening the slag generated in the inner wall 1 of the furnace.

The valve 300 further includes a valve 300 disposed on the flow path connecting the first storage unit 100 and the second storage unit 200. The valve 300 may be disposed in the first storage unit 100, The flow of water or steam can be controlled so that the water or steam flows into the second storage part 200.

And a second nozzle 230 capable of spraying the mixture of the additive mixed with the water or steam introduced from the first storage part 100 and the additive stored in the second storage part 200 .

The injection angle or injection amount of the additive mixture injected from the second nozzle 230 can be adjusted.

The water or steam injected from the first nozzle 130 and the additive mixture injected from the second nozzle 230 may be injected independently.

According to the present invention, it is possible to determine whether or not slag is generated by using the difference between the temperature of water or steam flowing through the inlet pipe and the temperature of water or steam flowing through the outlet pipe. The amount of production can be accurately grasped.

In addition, by providing a plurality of the first storage portion and the first nozzle in a plurality of pipes in the inner wall of the combustion chamber, the slag generated at various positions can be effectively removed.

In addition, since water or steam is already flowing in the inner wall of the combustion chamber, it is possible to remove slag by adding only a storage portion for storing water or steam, thereby minimizing the equipment added to the combustion chamber of the boiler.

Furthermore, it is possible to simultaneously perform the softening and the removing of the slag through the additive, by further including a second storing part for storing a separate additive and a second nozzle for spraying the second storing part.

Therefore, it can be used not only for the combustion furnaces used in coal-fired power plants, but also for removing slag from all generation facilities where slag can be produced, such as biomass burning furnaces and waste incinerators.

1 is a view showing an inner wall of a combustion furnace according to the prior art.
FIG. 2 is a view showing a slag removing apparatus according to a first embodiment of the present invention.
3 is a view showing a slag removing apparatus according to a first embodiment of the present invention.
4 is a view showing a slag removing apparatus according to a first embodiment of the present invention.
5 is a view showing a slag removing apparatus according to a first embodiment of the present invention.
6 is a side view showing the inner wall of a combustion chamber provided with the slag removing device according to the first embodiment of the present invention.
7 is a view showing the inner wall of a combustion chamber provided with the slag removing device according to the first embodiment of the present invention.
8 is a side view showing the inner wall of the combustion chamber in which the slag removing device according to the second embodiment of the present invention is installed.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.

1. Description of the inside of the combustion furnace

6 and 7, a plurality of ducts 20 are formed in the inner wall 1 of the furnace where the slag removing apparatus 10 according to the first embodiment of the present invention is installed.

Water or steam flows into the plurality of channels 20 to partially absorb heat generated in the burner 30, which will be described later, in the combustion furnace.

In the burner 30, combustion occurs and a flame is generated. Since a general combustion furnace is formed in a cylindrical shape, the flame generated in the burner 30 is injected to the center by combustion.

2.1 According to the first embodiment Slag  Description of the removal device 10

2 to 5, a slag remover 10 according to a first embodiment of the present invention includes a first storage part 100, an inflow part 110, an outflow part 120, and a first nozzle 130 ).

The first storage unit 100 is a place where water or steam is stored. The first storage part 100 is installed on the inner side of the combustion chamber inner wall 1 and on the top of the burner 30. Alternatively, the first storage unit 100 may be installed below the burner 30. [

The first reservoir 100 is fluidly connected to the conduit 20. In other words, water or steam flowing into the pipeline 20 may flow into the first storage part 100 or may flow out of the first storage part 100 to the pipeline 20.

Referring to FIG. 2, the first reservoir 100 is fluidly connected with one of the conduits 20.

Also, referring to FIG. 3, the first reservoir 100 is fluidly connected with two conduits 20. Referring to FIG. 4, the first reservoir 100 may be fluidly connected with five conduits 20. That is, the number of channels 20 fluidly connected to the first storage unit 100 may be changed as needed.

The size of the first storage unit 100 may be changed. More specifically, the size of the combustion furnace and the degree of slag formation of the inner wall 1 due to combustion can be changed. It may also be changed according to the number of pipelines 20 fluidly connected to the first storage unit 100.

The inlet portion 110 provides a passage through which water or steam flowing into the first storage portion 100 flows into the pipe 20. In the first embodiment, the inflow section 110 is formed on the lower side of the first storage section 100. Alternatively, the inlet 110 may be formed on the upper side of the first reservoir 100, but in any case it is formed to match the direction of the existing flow of water or steam flowing inside the channel 20 desirable.

The number of the inflow portions 110 can be changed. That is, the number of the inflow portions 110 can be changed according to the number of the pipelines 20 because the number of the pipelines 20 fluidly connected to the first storage portion 100 can be changed.

2 through 5, the inlet 110 is formed for each channel 20 fluidly connected to the first reservoir 100. That is, if the number of channels 20 fluidly connected to the first storage unit 100 is increased to one, two, and five, the number of the inlet units 110 is also one, two, and five Can be increased.

Alternatively, the inlet 110 may be formed less than the number of the conduits 20 contacting the first reservoir 100. More specifically, if the width of the first storage part 100 is wide and the number of the pipelines 20 contacting the first storage part 100 is five, only one of the pipelines 20, Only one inlet 110 may be formed so as to be fluidly connected to the housing 100.

The inflow section 110 is provided with an inflow temperature sensor 112. The inlet temperature sensor 112 senses the temperature of the water or steam entering the inlet 110 from the conduit 20.

2 through 4, the inflow temperature sensor 112 may be installed for each inflow section 110. Therefore, the inflow temperature of water or steam flowing into the plurality of pipelines 20 can be sensed, so that it is possible to more accurately determine whether slag formation will be described later.

Alternatively, referring to FIG. 5, the inlet temperature sensor 112 may be installed only at a portion of the inlet 110.

The outflow section 120 provides a passage through which water or steam stored in the first storage section 100 flows out. In the first embodiment, the outflow portion 120 is formed on the upper side of the first storage portion 100. Alternatively, the outflow section 120 may be formed below the first storage section 100, but in any case, it is preferable that the outflow section 120 is formed so as to match the existing flow direction of water or steam in the water channel wall 20 Do.

The number of the outflow portions 120 can be changed. That is, the number of the outflow ports 120 can be changed according to the number of the conduits 20 since the number of the conduits 20 fluidly connected to the first storage unit 100 can be changed.

2 through 5, the outlet 120 is formed for each channel 20 fluidly connected to the first reservoir 100. As shown in FIG. That is, if the number of channels 20 fluidly connected to the first storage unit 100 is increased to one, two and five, the number of the outflows 120 is also one, two and five Can be increased.

Alternatively, the outlet 120 may be formed less than the number of conduits 20 contacting the first reservoir 100. More specifically, if the width of the first storage part 100 is wide and the number of the pipelines 20 contacting the first storage part 100 is five, only one of the pipelines 20, Only one outlet 120 may be formed so as to be fluidly connected to the housing 100.

The outlet 120 is provided with an outlet temperature sensor 122. The outflow temperature sensor 122 senses the temperature of water or steam flowing out of the conduit 20 to the outflow section 120.

2 through 4, the outflow temperature sensor 122 may be installed for each outlet 120. Therefore, the inflow temperature of water or steam flowing into the plurality of pipelines 20 can be sensed, so that it is possible to more accurately determine whether slag formation will be described later.

Alternatively, referring to FIG. 5, the runoff temperature sensor 122 may be installed in only some of the outflows 120.

The first nozzle 130 is formed on one side of the first storage part 100. Water or steam stored in the first storage part 100 is injected from the first nozzle 130 to apply a physical force to the slag to remove the slag.

In the first embodiment, the first nozzle 130 is formed on the lower side of the first storage part 100. This is because the first storage unit 100 is installed on the upper portion of the burner 30. When the first storage unit 100 is installed below the burner 30, (Not shown).

However, it is preferable that the water jetting from the first nozzle 130 or the slag generated by the steam is formed below the first storage unit 100 so that gravity can be utilized to effectively remove the slag.

The injection angle or injection amount of water or steam injected from the first nozzle 130 can be adjusted. Specifically, the angle can be adjusted so as to be accurately injected to the position of the detected slag.

In addition, when a large amount of slag is detected, the injection amount of water or steam is increased to remove the slag, and when a small amount of slag is detected, the injection amount of water or steam is reduced to remove the slag.

That is, it is possible to efficiently remove the slag by controlling the injection angle or injection amount of water or steam to be sprayed according to the generation position and the amount of slag.

Referring to FIG. 6, the slag removal apparatus 10 according to the first embodiment of the present invention further includes a water supply device 140. The water supply device 140 stores extra water or steam.

In the illustrated embodiment, the water or steam stored in the first reservoir 100 to remove slag is primarily supplied in water or steam flowing in the conduit 20 formed in the combustion chamber inner wall 1.

At this time, if a large amount of slag is generated and the injection amount of water or steam is increased, water or steam flowing in the duct 20 formed in the combustion chamber inner wall 1 may be insufficient. At this time, water or steam is supplied from the water supply unit 140 to the first storage unit 100 to fill the deficiency of water or steam.

To this end, the water supply device 140 may include an apparatus capable of transferring water or steam, such as a pump (not shown).

2.2 According to the first embodiment Slag  Removing apparatus 10 Slag  Description of the removal process

Hereinafter, the process of determining whether or not slag is generated, the position and amount of slag generated by using the slag remover 10 according to the first embodiment, and removing the generated slag will be described.

Referring to FIG. 7, a plurality of conduits 20 are present in the combustion chamber inner wall 1. As shown in FIG. As described above, the channel 20 is in communication with the inlet 110 and the outlet 120 of the slag remover 10, respectively.

The inflow temperature sensor 112 and the outflow temperature sensor 122 may be installed in the inflow section 110 and the outflow section 120 to detect the temperature of the inflow water or steam and the temperature of the inflow water or steam.

, 유출 온도 감지기(122)에서 감지된 유출되는 물 또는 스팀의 온도를

이라고 한다.Hereinafter, the temperature of the incoming water or steam detected by the influent temperature sensor 112

, The temperature of the outflowed water or steam detected by the outflow temperature sensor 122

.

Water or steam flowing in the conduit 20 absorbs the heat generated by the combustion in the combustion chamber. At this time, the calorie absorbed can be calculated by the following equation.

는 물 또는 스팀이 흡수한 열량이고,

는 물 또는 스팀의 비열이며,

은 물 또는 스팀의 질량이다.

는

로 계산되며,

과

의 차이에 해당한다.In this formula,

Is the calorie absorbed by water or steam,

Is the specific heat of water or steam,

Is the mass of water or steam.

The

Lt; / RTI >

and

.

는 공지된 수치이고, 물 또는 스팀의 질량

은 보일러 가동시 투입되는 물 또는 스팀의 유량을 통해 계산될 수 있기 때문에 상기 식에서 상수에 해당한다. 따라서 측정된

과

의 값을 이용하면 보일러 운용 중 물 또는 스팀이 흡수한 열량인

를 구할 수 있다.At this time, the specific heat of water or steam

Is a known value, and the mass of water or steam

Is a constant in the above equation since it can be calculated through the flow rate of water or steam supplied when the boiler is operated. Therefore,

and

Is the heat absorbed by water or steam during operation of the boiler.

Can be obtained.

라고 하면,

는 슬래그 생성 여부를 판단하기 위한 기준 열량으로 사용될 수 있다.When no slag is present in the combustion chamber inner wall 1, the amount of heat absorbed by water or steam flowing in the plurality of pipelines 20 among the amount of heat generated due to the combustion inside the combustion chamber becomes maximum. At this time,

In other words,

Can be used as a reference calorie value for determining whether slag is generated or not.

와

의 대소 관계를 비교하여 연소실 내벽(1)의 슬래그 생성 여부를 판단할 수 있다.Therefore, it is possible to measure

Wow

It is possible to determine whether or not the slag of the combustion chamber inner wall 1 is generated.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량보다 같거나 큰 것이므로, 연소실 내벽(1)에 슬래그가 거의 존재하지 않는다고 판단될 수 있다.Specifically,

The amount of heat absorbed by the water or steam flowing in the conduit 20 is equal to or larger than the reference heat amount, so that it can be judged that the slag is hardly present in the combustion chamber inner wall 1.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량에 비해 작은 것이므로, 연소실 내벽(1)에 슬래그가 생성되었다고 판단될 수 있다. On the other hand,

, The amount of heat absorbed by the water or steam flowing in the conduit 20 is smaller than the reference heat amount, so that it can be judged that the slag is generated in the combustion chamber inner wall 1.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량에 비해 현저하게 작은 것이므로, 연소실 내벽(1)에 다량의 슬래그가 생성되었다고 판단될 수 있다.Especially,

It can be judged that a large amount of slag is generated in the inner wall 1 of the combustion chamber because the amount of heat absorbed by water or steam flowing in the conduit 20 is considerably smaller than the reference heat quantity.

은, 이미 제1 저장부(100) 내부에서 물 또는 스팀이 혼합된 이후에 감지되는 온도이므로

의 평균값을 이용하더라도 큰 오차가 발생되지 않는다.At this time, when a plurality of inflow temperature sensors 112 or a plurality of outflow temperature sensors 122 are installed,

Is a temperature that is sensed after water or steam is mixed in the first storage part 100

A large error is not generated even if the average value of the values is used.

은 슬래그 생성 여부에 직접적인 영향을 받는다. 보다 구체적으로, 외부에 슬래그가 생성된 관로(20)에서 측정된

은 외부에 슬래그가 생성되지 않은 관로(20)에서 측정된

에 비해 낮을 것이다.However, when the temperature detected by the influent temperature sensor 112

Is directly influenced by whether or not slag is generated. More specifically, as shown in FIG.

(20) where slag is not generated on the outside

.

은 평균값을 이용할 경우 오차가 발생될 수 있으므로, 각각의

을 이용하여 슬래그 발생 여부 판단을 위해

을 산출하는 것이 바람직하다.Thus, the temperature sensed by inlet temperature sensor 112

An error may occur when the average value is used,

To determine whether slag has occurred

.

의 개수는 유입 온도 감지기(112)의 개수만큼 증가될 수 있다. 산출된 각

를

와 비교하여, 어떤 관로(20)의 외부에 슬래그가 생성되었는지 여부를 판단할 수 있다.At this time,

May be increased by the number of inlet temperature sensors (112). The calculated angle

To

It is possible to judge whether or not slag has been generated outside of the pipe 20,

과

의 각 평균치를 이용하여

를 산출할 수 있다. 이 경우 판단 과정은 좀더 용이해질 수 있으나, 판단 결과의 정확도는 감소될 수 있다.Alternatively,

and

≪ RTI ID = 0.0 >

Can be calculated. In this case, the judgment process can be made easier, but the accuracy of the judgment result can be reduced.

과

을 감지할 경우, 슬래그 생성 여부 및 생성 위치의 정확한 검출이 가능해진다. A plurality of inlet temperature sensors 112 and outlet temperature sensors 122

and

It is possible to accurately detect whether slag is generated or not and where the slag is generated.

과

을 감지하고, 이를 통해 슬래그 생성 여부 및 생성 위치를 더욱 정확하게 검출할 수 있다.That is, the circumferential length of the combustion chamber inner wall 1 is further subdivided

and

And it is possible to more accurately detect whether or not the slag is generated and the position where the slag is generated.

과

을 감지하여, 어느 위치의 관로(20) 외부에 슬래그가 생성되었는지 여부를 판단할 수 있다.Referring to FIG. 7, a plurality of slag removing apparatuses 10 according to the first embodiment are installed along a duct 20 of a water pipe wall formed in the combustion chamber inner wall 1. Each of the installed slag removing apparatuses 10,

and

It is possible to determine whether slag is generated outside the pipeline 20 at which position.

The amount of water or steam injected from the first nozzle 130 of the slag remover 10 of the first embodiment can be adjusted. Therefore, it is possible to efficiently remove the slag by controlling the injection amount of water or steam according to the predicted amount of slag to be produced.

The spray angle of water or steam injected from the first nozzle 130 of the slag remover 10 of the first embodiment can be adjusted. Accordingly, it is possible to efficiently spray the slag by injecting water or steam at an accurate position by adjusting the injection angle of water or steam according to the determined position of the slag.

3.1 According to the second embodiment Slag  Description of the removal device 10

Referring to FIG. 8, the slag remover 10 according to the second embodiment differs from the slag remover 10 according to the first embodiment in that the second reservoir 200, the second nozzle 230, And further includes a storage unit 240 and a valve 300.

The structure and function of the remaining components except for the second storage part 200, the second nozzle 230, the additive storage part 240 and the valve 300 are the same as those of the slag removing device 10 according to the first embodiment described above. .

Therefore, the second embodiment will be described with the second storage unit 200, the second nozzle 230, the additive storage unit 240, and the valve 300 as a center.

In the second storage unit 200, an additive mixture is stored. The second storage unit 200 is installed on the inner side of the combustion chamber inner wall 1 and above the burner 30 and is connected to the first storage unit 100 and the additive storage unit 240. Alternatively, the second storage unit 200 may be installed below the burner 30. [

The additive stored in the second storage part 200 can soften the slag generated on the inner wall 1 of the combustion chamber. The slag softened by the additive can be more easily removed by the physical force generated by the injection of water or steam as compared with the hard slag.

A valve 300 is provided on the flow path connecting the second storage unit 200 and the first storage unit 100. Accordingly, the water or steam stored in the first storage part 100 may be introduced into the second storage part 200 and mixed with the additive to form an additive mixture. The production process of the additive mixture will be described later.

The second nozzle 230 is formed on one side of the second storage part 200. The additive mixture stored in the second storage part 200 is injected from the second nozzle 230 to soften the slag, .

In the second embodiment, the second nozzle 230 is formed so as to protrude from the inside of the combustion chamber inner wall 1.

The injection angle or injection amount of the additive mixture injected from the second nozzle 230 can be adjusted. Specifically, the injection angle can be adjusted so as to be accurately injected to the position of the produced slag. Also, when a large amount of slag is generated, the injection amount of the additive mixture is increased to soften and remove the slag, and when a small amount of slag is detected, the injection amount of the additive mixture is reduced to soften and remove the slag.

That is, it is possible to efficiently remove the slag by adjusting the injection angle or the injection amount of the injected additive mixture according to the generation position or the amount of the slag.

The additive storage unit 240 stores the additive supplied to the second storage unit 200. A valve may be provided on the flow path connecting the additive storage unit 240 and the second storage unit 200 to control the inflow direction and inflow amount of the additive.

The additive supplied from the additive storage unit 240 to the second storage unit 200 is mixed with water or steam supplied from the first storage unit 100 to form an additive mixture. At this time, a separate additive concentration control unit (not shown) may be provided to control the concentration of the additive.

The valve 300 is provided on a flow path connecting the first storage part 100 and the second storage part 200. Water or steam stored in the first storage unit 100 is controlled to flow into the second storage unit 200 through the valve 300, the inflow direction and the inflow amount.

Therefore, the additive mixture stored in the second storage part 200 can be controlled to an appropriate concentration, and an appropriate amount of additive can be supplied as needed, so that the amount of the additive to be used can be minimized.

However, since water or steam and the additive mixture are injected and mixed simultaneously in the first nozzle 130 and the second nozzle 230 as described later, the concentration of the additive mixture stored in the second reservoir 200 is high .

3.2 According to the second embodiment Slag  Removing apparatus 10 Slag  Description of the removal process

Hereinafter, a process of determining whether or not slag is generated, a position and a generation amount of slag using the slag remover 10 according to the second embodiment, and removing the generated slag will be described.

The process of determining whether or not the slag removing apparatus 10 according to the first embodiment generates slag, a generation position, and a generation amount is applied to the second embodiment as well.

Therefore, the process of removing the slag generated around the second storage part 200, the second nozzle 230, the additive storage part 240, and the valve 300 added in the second embodiment will be described.

과

의 차이를 이용하여 슬래그 생성 여부, 생성 위치 및 생성량이 판단되면, 제1 노즐(130)에서 물 또는 스팀이 분사되어 생성된 슬래그를 제거한다.First, the sensed temperature is detected through the inlet temperature sensor 112 and the outlet temperature sensor 122

and

The generation position and the generation amount of the slag are determined, the slag generated by spraying water or steam from the first nozzle 130 is removed.

At this time, when the slag is hard, there is a limit to the slag removal by a mechanical method through injection of water or steam. Therefore, the slag must first be softened so that it can be easily removed by spraying water or steam.

과

의 차이를 이용하여

를 산출하고, 산출된

를

와 비교하는 과정을 통해 알 수 있다.Whether the slag is hardly generated and whether the slag has not been removed by water or steam sprayed from the first nozzle 130,

and

Using the difference of

, And the calculated

To

As shown in FIG.

과

을 이용하여

를 다시 산출하여,

와 비교하는 것이다.That is, after the slag removal operation by the water or the steam injected from the first nozzle 130 is performed, the slag removing operation is performed through the inlet temperature sensor 112 and the outlet temperature sensor 122

and

Using

Lt; / RTI >

.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량보다 같거나 큰 것이므로, 연소실 내벽(1)에 생성된 슬래그가 거의 제거되었다고 판단될 수 있다.Specifically,

The amount of heat absorbed by the water or steam flowing in the conduit 20 is equal to or larger than the reference heat quantity, it can be judged that the slag generated in the combustion chamber inner wall 1 is almost removed.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량에 비해 작은 것이므로, 연소실 내벽(1)에 생성된 슬래그가 아직 잔류하고 있다고 판단될 수 있다. On the other hand,

The amount of heat absorbed by water or steam flowing in the conduit 20 is smaller than the reference heat amount, so that it can be judged that the slag generated in the combustion chamber inner wall 1 still remains.

일 경우 관로(20) 내에 유동 중인 물 또는 스팀이 흡수한 열량이 기준 열량에 비해 현저하게 작은 것이므로, 연소실 내벽(1)에 생성된 슬래그가 거의 제거되지 못했다고 판단될 수 있다.Especially,

, The amount of heat absorbed by water or steam flowing in the conduit 20 is considerably smaller than the reference heat amount, so that it can be judged that the slag generated in the combustion chamber inner wall 1 is hardly removed.

A high concentration additive mixture is stored in the second storage part (200). The high concentration additive mixture injected from the second nozzle 230 is mixed with water or steam injected from the first nozzle 130 to reach the slag.

8, the water or steam sprayed from the first nozzle 130 is sprayed in a direction directly facing the slag, and the additive mixture sprayed from the second nozzle 230 is sprayed from the first nozzle 130 Or steam is sprayed onto the path of travel towards the slag.

That is, the water or steam injected from the first nozzle 130 and the additive mixture injected from the second nozzle 230 are mixed on the movement path to the slag to reach the slag.

Therefore, the slag is softened by the additive mixture and at the same time receives the physical force by water or steam, and is more easily removed than by using only the physical force by water or steam.

At this time, since the injection angle or injection amount of the first nozzle 130 and the second nozzle 230 can be adjusted, the slag can be effectively removed regardless of the position of the slag.

In addition, water or steam injected from the first nozzle 130 and additive mixture injected from the second nozzle 230 are simultaneously injected for the above-described mixing process.

Alternatively, the water or steam injected by the first nozzle 130 and the additive mixture injected by the second nozzle 230 may be injected independently. For example, in the case of a hard slag having a small amount of production, only the additive mixture may be injected in the second nozzle 230 to remove the slag.

The slag removing apparatus 10 of the second embodiment is installed in the combustion chamber inner wall 1 by the same number as the number of the slag removing apparatuses 10 of the first embodiment.

That is, by providing a plurality of slag removing apparatuses 10, it is possible to determine whether or not the slag is generated at various positions of the inner wall 1 of the combustion chamber. Therefore, it is possible to accurately determine the position at which slag generation is expected, and measures can be taken to eliminate it.

As described above, the injection angle of water or steam injected from the first nozzle 130 of the slag remover 10 of the second embodiment can be adjusted. Accordingly, it is possible to efficiently spray the slag by injecting water or steam at an accurate position by adjusting the injection angle of water or steam according to the determined position of the slag.

Further, the amount of water or steam injected from the first nozzle 130 of the slag remover 10 of the second embodiment and the amount of the additive mixture injected from the second nozzle 230 can be adjusted. Therefore, the slag can be efficiently removed by adjusting the injection amount of the water or the steam and the additive mixture according to the determined amount of the slag.

Further, the injection angle of the additive mixture injected from the second nozzle 230 can be adjusted. Thus, whichever hard slag occurs, softening and removal by the additive mixture is possible.

Further, since the hard slag can be softened by the additive mixture injected from the second nozzle 230 of the slag remover 10 of the second embodiment, the softening of the slag after the softening of the slag, The slag can be removed even by spraying.

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 can be understood that it is possible.

1: inner wall of the combustion furnace
10: Slag removing device
20: channel
30: Burner
100: First storage unit
110: inlet
112: Inflow temperature sensor
120:
122: Flow temperature sensor
130: first nozzle
140: Water supply device
200: second storage unit
230: second nozzle
240: additive storage part
300: valve

Claims (10)

A slag removing device (10) installed in a combustion furnace inner wall (1) where a plurality of pipes (20) through which water or steam flows are formed,
And a first reservoir (100) fluidly connected to the conduit (20) and storing the water or steam,
The first storage unit (100)
An inlet 110 through which the water or steam flows in the channel 20;
An outlet (120) through which the water or steam flows to the conduit (20);
An inlet temperature sensor 112 installed at the inlet 110;
An outflow temperature sensor 122 installed at the outlet 120; And
And a first nozzle (130) for spraying the water or steam stored in the first storage part (100)
The water or steam stored in the first storage part (100) is sprayed to the first nozzle (130) corresponding to the temperature sensed by the inflow temperature sensor (112) and the outflow temperature sensor (122)
Slag removal device.
The method according to claim 1,
Wherein the slag generation is determined based on a difference between temperatures detected by the inlet temperature sensor (112) and the outlet temperature sensor (122)
Slag removal device.
The method according to claim 1,
A plurality of pipelines 20 are connected to one first storage unit 100 to form a plurality of the inflow units 110 or the outflow units 120,
The inlet temperature sensor 112 is installed for each inlet 110,
Wherein the outlet temperature sensor (122) is installed for each of the outlet portions (120)
Slag removal device.
The method according to claim 1,
The injection angle or injection amount of the water or steam injected from the first nozzle (130)
Slag removal device.
The method according to claim 1,
Further comprising a water supply device (140) for supplying the water or steam to the first storage part (100)
Slag removal device.
The method according to claim 1,
Further comprising a second storage part (200) in which an additive softening the slag generated in the inner wall (1) of the furnace is stored,
Slag removal device.
The method according to claim 6,
Further comprising a valve (300) provided on a flow path connecting the first storage part (100) and the second storage part (200)
The valve (300) controls the flow of the water or steam so that the water or steam stored in the first storage part (100) flows into the second storage part (200)
Slag removal device.
8. The method of claim 7,
Further comprising a second nozzle (230) capable of spraying the mixture of the additive mixed with the water or steam introduced from the first storage part (100) and the additive stored in the second storage part (200)
Slag removal device.
9. The method of claim 8,
The injection angle or the injection amount of the additive mixture injected from the second nozzle 230 can be adjusted,
Slag removal device.
9. The method of claim 8,
The water or steam injected from the first nozzle 130 and the additive mixture injected from the second nozzle 230 may be injected independently,
Slag removal device.

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