KR101428735B1

KR101428735B1 - Air supply apparatus and method for solid fuel boiler

Info

Publication number: KR101428735B1
Application number: KR1020120129477A
Authority: KR
Inventors: 강새별; 김종진; 최규성; 심봉석; 오홍영; 문중식
Original assignee: 한국에너지기술연구원
Priority date: 2012-11-15
Filing date: 2012-11-15
Publication date: 2014-08-11
Also published as: KR20140072229A

Abstract

The present invention relates to an air supply device capable of staged combustion, a supply method, and a boiler having the air supply device. To a combustion chamber in which combustion of solid fuel is generated; A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is transferred; A driving device for moving the movable grate; Air supply means for supplying air for burning the solid fuel to the lower end space of the movable grate; And a partition wall provided in a lower end space of the movable grate and partitioning the section of the movable grate, so that the air supply means supplies the air to different sections defined by the partition walls. To an air supply device for a fuel boiler.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply apparatus for a solid fuel boiler,

The present invention relates to an air supply device capable of staged combustion, a supply method, and a boiler having the air supply device. And more particularly to an air supply apparatus capable of staged combustion capable of efficiently supplying air for burning a solid fuel by forming different compartments in the lower end space of the movable grate through partition walls.

The energy crisis due to oil depletion and the global warming due to carbon emissions are increasing interest in environmentally friendly energy. Pellets are natural-friendly fuels, and they are attracting attention as alternative energy sources such as petroleum. Pellets are small cylinders in which wood byproducts are crushed, dried and compacted into small particles and are mainly used as heating fuel.

Korean Patent Publication No. 1062471, Korean Patent Laid-Open No. 2001-84118, and Korean Patent Laid-Open Publication No. 1997-62486 disclose a pellet combustion system using a pellet as a heating fuel, and a solid fuel boiler.

1 shows a cross-sectional view of a solid fuel boiler with a conventional movable grate. 1, the solid fuel boiler includes a combustion chamber 10 having a space in which solid fuel is burnt therein, a fuel supply unit 2 for supplying solid fuel stored in the fuel storage unit into the combustion chamber, A movable grate 20 provided in the combustion chamber 10 for moving the solid fuel supplied upwardly in a stepwise manner from the inlet side to the outlet side in a stepwise manner, a movable grate 20 for combusting the solid fuel placed on the movable grate 20 An air supply means 40 for supplying combustion air, and the like.

The structure of the movable grate is composed of a movable stage assembly which is provided with a plurality of movable stages 21 and which is reciprocally driven by a driving device, and a fixed stage assembly provided with a plurality of fixed stages 22 provided between the movable stage.

In the conventional solid fuel boiler, the primary air is supplied to the lower end space of the movable type grate 20 by the air supply means 40 to supply air to the solid fuel placed on the movable grate 20, .

However, as shown in FIG. 1, since air is uniformly supplied to the lower end of the movable grate 20 by one air supply means 40 on the left side, air is mainly supplied to the portion where the flame is generated, There is a problem that the amount of air required for char combustion is insufficient and the amount of such air can not be controlled independently because only a part of air is supplied in the char combustion section existing on the discharge end side of the char combustion chamber 20.

That is, the combustion section has an initial combustion stage region in which ignition of the solid fuel is generated based on the direction of the discharge end side (i.e., the moving direction of the solid fuel) from the inlet end side of the solid fuel, and solid fuel forms flame There is an intermediate combustion stage region in which a portion of the solid fuel is changed into charcoal as it is burned. On the discharge end side, most of the solid fuel is converted to char so that char combustion occurs.

The air is uniformly supplied by one air supply means even though the amount of air required for efficient combustion differs from one region to another. In particular, since the air required for the char combustion section is not supplied, the combustion efficiency is reduced .

Korea Patent No. 1062471 Korea Patent Publication No. 2001-84118 Korea Patent Publication No. 1997-62486

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an air conditioner for a portable grate capable of independently controlling and supplying air to different areas by dividing a lower end space of the mobile grate into a plurality of sections through a plurality of partitions. There is provided an air supply apparatus for a solid fuel boiler capable of performing efficient combustion, stepwise combustion capable of shortening a combustion time, a supply method, and a boiler having the air supply apparatus.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

A first object of the present invention is to provide a combustion chamber in which combustion of solid fuel is generated; A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is transferred; A driving device for moving the movable grate; Air supply means for supplying air for burning the solid fuel into the lower end space of the movable grate; And a partition wall provided in the lower end space of the movable grate and partitioning a section of the movable grate, so that air is supplied to the different sections of the air supply means partitioned by the partition walls. Air supply device.

The partition wall may be installed in the lower end space of the movable grate in the longitudinal direction, and the lower end space of the movable grate may be partitioned.

The lower end space may include a first region, a second region, and a third region, and the solid fuel supplied to the movable grate may be stepwise moved to the first region, the second region, and the third region.

The first region is a region where solid fuel is supplied to the movable grate to generate ignition, the second region is a region where flames are generated to burn the solid fuel, and the solid fuel is converted into char, Is a region in which the first electrode is formed.

The air supply means may be provided in each of the first region, the second region, and the third region to supply air to each of the first region, the second region, and the third region.

And a controller for controlling the amount of air supplied to each of the first region, the second region and the third region by controlling the air supply means.

A volumetric sensor for sensing in real time the volume of the solid fuel transferred by the movable grate, a temperature sensor for measuring the temperature in the combustion chamber located above the first region, the second region and the third region in real time, And a flame detection sensor for detecting a flame formed in the second region and the third region, respectively.

The control unit controls the air supply means based on the measurement data measured by the volumetric sensor, the temperature sensor, and the flame detection sensor to adjust the amount of air supplied to each of the first region, the second region, and the third region, can do.

The movable grate includes at least one pair of fixed grate bars and at least one pair of fixed grate bars installed in the fixed grate bars, at least one moving grate bar positioned between the pair of fixed grate bars, a moving grate bar installed at the moving grate, And a cam portion for moving the first and second wheels in close contact with each other and varying the height of the first frame according to the movement direction.

The first frame may further include a first frame provided on an upper surface thereof, and a second frame provided with a first wheel on a lower surface thereof, the second frame being integrally movable.

And a third frame having a plurality of cam portions on an upper surface thereof, and a plurality of second wheels are further provided on a lower surface of the third frame.

A second object of the present invention is to provide a combustion chamber in which combustion of solid fuel is generated; A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is supplied and transported upward; A driving device for moving the movable grate; A partition wall spaced apart from each other by a predetermined distance and partitioned into a first region, a second region, and a third region, the partition being provided in the lower end space of the movable grate in a longitudinal direction; And air supply means provided in each of the first region, the second region and the lower portion of the third region for supplying air for burning the solid fuel into the first region, the second region and the third region, respectively; The present invention can be achieved as an air supply apparatus for a stepwise combustible solid fuel boiler.

A third object of the present invention is to provide a combustion chamber in which combustion of solid fuel is generated; A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is transferred; A driving device for moving the movable grate; An air supply means for supplying air to the lower end space of the movable grate to burn solid fuel; And the other side is coupled to one side of the lower surface of the movable grate so that the lower surface of the movable grate and the lower surface of the movable grate are spaced apart from each other, A first barrier rib partitioning the first barrier rib into a first region; And a space between the upper surface and the lower surface of the first bank, the space between the lower surface of the combustion chamber and the lower surface of the combustion chamber, A second partition wall; And the air supply means supplies air to the different sections defined by the first partition and the second partition, as an air supply device for a stepwise combustible solid fuel boiler.

The solid fuel may be pellets.

And a speed controller for controlling the moving speed of the movable grate by controlling the driving device.

A fourth object of the present invention can be achieved as a solid fuel boiler characterized in that it comprises an air supply device for the aforementioned stepwise firing capable solid fuel boiler.

A fifth object of the present invention is to provide a fuel cell system in which solid fuel is supplied to a top surface of a movable grate provided in a combustion chamber by a fuel supply unit and a driving device drives a movable grate; Wherein the air supply means supplies air to a first region of the movable grate bottom and the solid fuel is ignited by the ignition device and the supplied air; The solid fuel is transported to the upper side of the second region by the movable grate, the air supply means supplies air to the second region, the flame is generated, the solid fuel is combusted, and a part of the solid fuel is converted to char; And a step in which the solid fuel is transported to the upper side of the third region by the movable grate and the air supply means supplies air to the third region so that the char is burnt. As a stepwise combustion method.

A volumetric sensor for sensing the volume of the solid fuel in real time and a temperature sensor for measuring the temperature in the combustion chamber in real time, wherein the control unit controls the air supply means based on the measurement data measured by the volumetric sensor and the temperature sensor And adjusting the amount of air supplied to each of the first region, the second region, and the third region.

And the speed controller controls the driving unit based on the measurement data measured by the volume sensor and the temperature sensor to adjust the moving speed of the mobile grate.

The air supply amount supplied to the third region is larger than the air supply amount supplied to the second region, and the air supply amount supplied to the second region is larger than the air supply amount supplied to the first region.

According to an embodiment of the present invention, the lower end space of the movable grate can be divided into different sections through a plurality of partitions to independently control and supply air to different areas, thereby enabling more efficient combustion and shortening the combustion time .

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a cross-sectional view of a solid fuel boiler having a conventional movable grate,
FIG. 2 is a sectional view of a solid fuel boiler provided with an air supply device capable of staged combustion with two partition walls in a lateral direction according to a first embodiment of the present invention;
FIG. 3 is a sectional view of a solid fuel boiler provided with an air supply device capable of staged combustion provided with two partition walls in the longitudinal direction according to the first embodiment of the present invention;
FIG. 4 is a sectional view of a solid fuel boiler provided with an air supply device capable of staged combustion provided with two partition walls in a longitudinal direction according to a second embodiment of the present invention;
5 is a block diagram illustrating a signal flow of a control unit according to an embodiment of the present invention;
6 is a flowchart of a stepwise combustion method using an air supply apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, it includes not only a case where it is directly connected but also a case where the other part is indirectly connected with another part in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Hereinafter, the configuration and function of the air supply device capable of stepwise combustion according to the first embodiment of the present invention will be described. 2 is a cross-sectional view of a solid fuel boiler 1 equipped with an air supply device capable of staged combustion with two partition walls 50 in the lateral direction according to the first embodiment of the present invention.

2, a solid fuel boiler 1 equipped with an air supply apparatus capable of staged combustion according to a first embodiment of the present invention includes a combustion chamber 10 in which solid fuel supplied in an inner space is burned, A movable grate 20 which is provided in the combustion chamber 10 and is gradually burned while the fuel supplied to the upper surface is transported by the fuel supply unit 2 and a drive unit 22 for moving the movable stage 22 of the movable grate 20 An air supply means 40 for supplying air to the lower end space of the movable grate 20 to burn the solid fuel placed on the upper surface of the movable grate 20 and a lower end space of the movable grate 20, A plurality of barrier ribs 50 installed in the lateral direction for the sake of simplicity.

2, the movable grate 20 is constituted by a plurality of movable ends 22 provided between a plurality of fixed ends 21 and fixed ends 21, The solid fuel injected into the upper portion of the movable grate 20 is moved in a stepwise manner from the charging unit side to the discharging unit side (from the left side to the right side based on what is shown in FIG. 2). These solid fuels used pellets in specific embodiments.

In addition, as shown in FIG. 2, the air supply apparatus for the step-burnable solid fuel boiler according to the first embodiment of the present invention includes two partition walls 50 for partitioning the lower end space of the movable grate 20 It can be seen that it is installed. That is, in the lower end space of the movable grate 20, two partition walls 50 are provided in the lateral direction spaced apart from each other by a specific distance.

The lower surface of the first partition wall 51 and the upper surface of the second partition wall 52 are defined as the first area 41, The upper surface of the combustion chamber 10 is defined as the second region 42 and the second partition 52 is defined as the third region 43 between the lower plate of the combustion chamber 10.

The technical idea of the present invention is to divide the space into which the air is introduced into different sections to individually control and supply the air separately. This is because the direction of the partition 50, the specific shape of the partition 50, Should not affect the scope of rights of the present invention.

In the first region 41, the solid fuel supplied to the input end of the movable grate 20 is ignited by the ignition device. The second region 42 mainly generates the flame, And the third region 43 corresponds to a region where the solid fuel converted into char is burnt.

The air supply means 40 according to the first embodiment of the present invention independently supplies air to each of the first region 41, the second region 42 and the third region 43 which are partitioned. Further, when burning the solid fuel converted into charcoal, the amount of air supplied to the third region 43 is larger than the amount of air supplied to the second region 42, The air supply means 40 supplies air such that the amount of air supplied to the first region 41 is larger than the amount of air supplied to the first region 41. [

The air supply means 40 is independently provided in each of the first region 41, the second region 42 and the third region 43 and includes the first region 41, the second region 42, , And the third region (43).

3 is a cross-sectional view of a solid fuel boiler 1 equipped with an air supply device capable of staged combustion with two partition walls 50 in the longitudinal direction according to the first embodiment of the present invention. As shown in FIG. 3, it can be seen that the two partitions 50 are provided at the lower end of the movable grate 20 in the longitudinal direction, unlike the one shown in FIG.

That is, as shown in FIG. 3, it can be seen that the first partition 51 and the second partition 52 are spaced apart from each other at the lower end of the movable grate 20 in the longitudinal direction. The first region 41 is defined as a space between the first partition 51 and the outer wall of the combustion chamber 10 on the charging end side and the second region 42 is defined as a space between the first partition 51 and the second partition 52, And the third region 43 is defined as a space between the second bank 52 and the discharge end of the movable grate 20.

The air supply means 40 is provided on the lower side of the combustion chamber 10 and is configured to independently supply air to each of the first region 41, the second region 42 and the third region 43 do. Therefore, as described above, the lower partition space of the movable grate 20 can be defined by the first partition 51 and the second partition 52, so that efficient combustion can be achieved while controlling the amount of air for each area. That is, when burning the solid fuel converted into charcoal, the amount of air supplied to the third region 43 is larger than the amount of air supplied to the second region 42, The air supply means 40 supplies air such that the amount of air supplied to the first region 41 is larger than the amount of air supplied to the first region 41. [

Hereinafter, the configuration and function of the air supply device capable of stepwise combustion according to the second embodiment of the present invention will be described. 4 is a cross-sectional view of a solid fuel boiler 1 equipped with an air supply device capable of stepwise combustion with two partition walls 50 in a longitudinal direction according to a second embodiment of the present invention.

The staged combustion air supply device according to the second embodiment of the present invention is a staged combustion type air supplying device for staged combustion in which the lower end space of the movable grate 20 is divided stepwise to control the amount of air independently in different areas, The technical idea that air can be supplied is the same, but the specific structure of the movable grate 20 is different. Therefore, the difference from the first embodiment will be mainly described.

As shown in FIG. 4, the structure of the movable grate 20 is such that the first frame 73 can be reciprocated in the rectangular parallelepiped combustion chamber 10. 7 to 10 fixed grate bars 61 are installed on the upper part of the first frame 73 and about 7 to 10 moving grate bars 71 are installed on the upper part of the first frame 73. The moving grate bar (71) is provided between the fixed grate bar (61).

The moving grate 72 is installed at right angles to the moving grate bar 71, and about five to ten of the moving grate bar 71 are installed in a line. The moving grate 72 may be fixed to the moving grate bar 71, or may be installed to allow relative rotation.

The fixed grate 62 is installed at right angles to the fixed grate bar 61 and about 5 to 10 of the fixed grate bar 61 are arranged in a line. However, it is preferable that the fixed grate 62 is provided in the same number as the moving grate 72. The fixed grate 62 may be fixed to the fixed grate bar 61, or may be provided to be relatively rotatable.

The fixed grate 62 and the free grate 72 are inclined to be greater than 0 and less than 30 with respect to the horizontal direction. 0 ° or larger than 30 °, the efficiency of the lower space starts to decrease, and the discharge of the soft material is not smooth.

The first frame 73 has a step or inclined surface 81 for inclining the moving grate bar 71. A second frame 85 is provided below the first frame 73. The second frame 85 is in the form of a flat plate, and six first wheels 74 are provided on the lower surface thereof. At the rear end of the first frame 73, a propelling shaft 88 is installed. The propeller shaft 88 is propelled by a driving device 30 such as a rack and pinion driven by a hydraulic cylinder, a pneumatic cylinder, and a motor. The propeller shaft 88 is inclined to correspond to the inclination angle of the cam portion 80. This is to minimize unnecessary force when the thrust is transmitted.

Six cam portions 80 are provided on the upper surface of the third frame 86 and six second wheels 87 are provided on the lower surface for moving the entire movable grate. In addition, the third frame 86 is fixed integrally with the front end wall. Each of the cam portions 80 is paired with each of the first wheels 74 and has a concave-convex shape fit in the cross-sectional direction in order to prevent the first wheels 74 from being separated. That is, if the projection of the first wheel 74 is formed on the circumference of the first wheel 74, a projection receiving groove (not shown) is formed in the cam portion 80.

The lower surface of the cam portion 80 is fixed to the third frame 86 and the upper surface of the cam portion 80 forms a rail so that the first wheel 74 can roll. On the upper surface of the cam portion 80, the highest point 82, the middle point, and the lowest point are inclined. The inclination angle formed by the upper surface of the cam portion 80 is equal to the inclination angle of the moving grate 72 and the fixed grate 62. The distance between the highest point 82 and the lowest point 83 becomes the reciprocating stroke distance of the first frame 73 and also becomes the reciprocating stroke distance of the moving grate 72. [

The stopper 84 is provided adjacent to the lowest point 83 so that the first wheel 74 can be stably maintained at the lowest point 83. For this purpose, the stopper 84 is formed to have the same cross-sectional shape as the cam portion 80 and reverse in the opposite direction. The stopper 84 may function as a protrusion (not shown) in addition to a reverse inclination.

As shown in FIG. 4, the first partition 51 and the second partition 52 are spaced apart from each other at a lower end of the movable grate 20 in the longitudinal direction. The first region 41 is defined as a space between the first partition 51 and the outer wall of the combustion chamber 10 on the charging end side and the second region 42 is defined as a space between the first partition 51 and the second partition 52, And the third region 43 is defined as a space between the second bank 52 and the discharge end of the movable grate 20.

The air supply means 40 is provided on the lower side of the movable grate 20 so that air can be independently supplied to each of the first region 41, the second region 42 and the third region 43 do. Therefore, as described above, the lower partition space of the movable grate 20 can be defined by the first partition 51 and the second partition 52, so that efficient combustion can be achieved while controlling the amount of air for each area. That is, when burning the solid fuel converted into charcoal, the amount of air supplied to the third region 43 is larger than the amount of air supplied to the second region 42, The air supply means 40 supplies air such that the amount of air supplied to the first region 41 is larger than the amount of air supplied to the first region 41. [

5 is a block diagram showing a signal flow of the control unit 90 according to an embodiment of the present invention. As shown in FIG. 5, the air supply apparatus for the staged-burnable solid fuel boiler according to the embodiment of the present invention includes a volume sensor 93 for detecting the volume of the solid fuel placed on the upper surface of the movable grate 20 A temperature sensor 91 for measuring the temperature in the upper side combustion chamber 10 of each of the first region 41, the second region 42 and the third region 43 in real time and the flame energy in real time A flame detection sensor 92 for performing flame detection, and the like.

Based on the data measured by the volumetric sensor 93, the temperature sensor 91 and the flame detection sensor 92, the controller 90 senses the amount of the solid fuel converted into charcoal, The amount of air to be supplied to the first area 41, the second area 42 and the third area 43 is set based on the first area 41, the second area 42, The air supply means 40 is controlled so that air is supplied to the air supply passage 43.

Further, the apparatus further includes a speed control unit for controlling the driving device 30 of the air supplying device movable grate 20 for the staged combustion capable of staged combustion according to an embodiment of the present invention to adjust the reciprocating speed, the reciprocating period, and the like .

Hereinafter, a stepwise combustion method using an air supply apparatus according to an embodiment of the present invention will be described. This combustion method uses the above-mentioned stepwise combustion capable air supply device for a solid fuel boiler. 6 is a flowchart of a stepwise combustion method using an air supply apparatus according to an embodiment of the present invention.

First, solid fuel is supplied to the upper surface of the movable grate 20 installed in the combustion chamber 10 by the fuel supply unit 2, and the driving device 30 drives the movable grate 20 (S10). Then, the air supply means 40 supplies air to the first region 41 at the lower end of the movable grate 20, and the solid fuel injected by the ignition device and the supplied air is ignited (S20).

The solid fuel is gradually transferred to the upper side of the second region 42 by driving the movable grate 20 and the air supply means 40 supplies air to the second region 42 at S30, A flame is generated and the solid fuel is burned, so that part of the solid fuel is converted into char (S40). The solid fuel is transported to the upper side of the third region 43 by driving the movable grate 20 and the air supply means 40 supplies air to the third region 43 so that the char is burned (S50).

The control unit 90 controls the amount of air supplied to the first region 41, the second region 42 and the third region 43 so that the solid fuel is combusted stepwise and efficiently do. In this process, the volume sensor 93 senses the volume of the solid fuel placed on the movable grate 20 in real time, the temperature sensor 91 measures the temperature in the combustion chamber 10 in real time, The detection sensor 92 measures the flame energy generated in real time.

The control unit 90 controls the air supply unit 40 based on the measurement data measured by the volumetric sensor 93, the temperature sensor 91 and the flame detection sensor 92 so that the first region 41, 2 region 42 and the third region 43, respectively.

The amount of air supplied to the third region 43 is larger than the amount of air supplied to the second region 42 and the amount of air supplied to the second region 42 is larger than the amount of air supplied to the first region 41 The air supply unit 40 is controlled to be larger than the air supply amount supplied to the air supply unit 40.

1: boiler for solid fuel
2: fuel supply unit
10: Combustion chamber
20: Mobile grate
21: Fixed end
22: Moving stage
30: Driving device
40: air supply means
41: first region
42: second region
43: third region
50: partition wall
51: first partition
52:
61: Fixed grate bar
62: fixed grate
71: Moving grate bar
72: Moving grate
73: 1st frame
74: First wheel
80: cam portion
81:
82: Peak
83: lowest point
84: Stopper
85: second frame
86: Third frame
87: 2nd wheel
88: propeller shaft
90:
91: Temperature sensor
92: Flame detection sensor
93: Volume Sensing Sensor

Claims

A combustion chamber in which combustion of the solid fuel occurs;
A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is transferred;
A driving device for moving the movable grate;
Air supplying means for supplying air for burning the solid fuel to the lower end space of the movable grate; And
And a partition wall installed in a lower end space of the movable grate to partition a section of the movable grate,
Wherein the air supply means supplies the air to different sections defined by the partition walls.

The method according to claim 1,
Wherein the partition wall is installed in the lower end space of the movable grate in the longitudinal direction so that the lower end space of the movable grate is partitioned.

3. The method of claim 2,
Characterized in that the lower end space includes a first region, a second region and a third region, and the solid fuel supplied to the movable grate is stepwise moved to the first region, the second region and the third region The air supply for the solid fuel boiler being capable of stepwise combustion.

The method of claim 3,
Wherein the first region is a region where the solid fuel is supplied to the movable grate to generate ignition, the second region is a region where a flame is generated to burn the solid fuel, and the solid fuel is converted into char, And the third region is a region where the char is burned.

The method of claim 3,
The air supply means
Wherein the first region, the second region, and the third region are provided in each of the first region, the second region, and the third region to supply air to each of the first region, the second region, and the third region. Air supply.

6. The method of claim 5,
Further comprising a controller for controlling the air supply means to regulate the amount of the air supplied to each of the first region, the second region, and the third region, Supply device.

The method according to claim 6,
A volumetric sensor for sensing in real time the volume of the solid fuel transferred by the movable grate, a temperature sensor for measuring in real time the temperature in the combustion chamber located above the first region, the second region and the third region, And a flame detection sensor for detecting a flame formed in each of the first region, the second region, and the third region. The air supply apparatus for a staged combustible solid fuel boiler according to claim 1,

8. The method of claim 7,
Wherein the control unit controls the air supply unit based on measurement data measured by the volumetric sensor, the temperature sensor, and the flame detection sensor, so that the air supplied to the first area, the second area, Wherein the amount of the air is controlled by adjusting the amount of air supplied to the boiler.

The method according to claim 1,
The mobile grate
At least one pair of fixed grate bars and at least one pair of fixed grate bars installed in the fixed grate bars, at least one moving grate bar positioned between the pair of fixed grate bars and a moving grate bar installed in the moving grate bar, And a cam for moving the first wheel in close contact with the first frame and allowing the height of the first frame to be changed according to the moving direction. Possible air supply for solid fuel boilers.

10. The method of claim 9,
Further comprising a first frame provided on the upper surface of the first frame and a second frame integrally movable with the first frame on the lower surface of the first frame. .

10. The method of claim 9,
Further comprising a third frame having a plurality of cam portions on an upper surface thereof, wherein a plurality of second wheels are further provided on the lower surface of the third frame.

A combustion chamber in which combustion of the solid fuel occurs;
A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is supplied and transported upward;
A driving device for moving the movable grate;
A partition wall spaced apart from each other by a predetermined distance and partitioned into a first area, a second area and a third area, the partition being installed in the lower end space of the movable grate in a longitudinal direction; And
An air supply means provided in each of the first region, the second region and the lower portion of the third region for supplying air for burning the solid fuel into the first region, the second region and the third region, ; Wherein the boil-off air is supplied to the boil-off valve.

A combustion chamber in which combustion of the solid fuel occurs;
A movable grate which is provided in the combustion chamber and is gradually burned while the fuel supplied by the fuel supply unit is transferred;
A driving device for moving the movable grate;
Air supplying means for supplying air for burning the solid fuel to the lower end space of the movable grate;
And the other side is coupled to one side of the lower surface of the movable grate, so that the upper surface and the lower surface of the movable grate are separated from each other by a predetermined distance and spaced apart from each other in the transverse direction in the lower end space of the movable grate, A first bank defining a plane and a space between the first and second planes; And
A space between the upper surface and the lower surface of the first partition is defined as a space between the second area and the lower surface of the combustion chamber and a space between the lower surface of the first partition and the lower surface of the first partition, And a second partition wall partitioned into regions,
Wherein the air supply means supplies the air to different sections defined by the first partition and the second partition. &Lt; Desc / Clms Page number 20 >

The method according to claim 1, 12, or 13,
Wherein the solid fuel is a pellet. &Lt; Desc / Clms Page number 15 >

The method according to claim 1, 12, or 13,
Further comprising a speed controller for controlling the moving speed of the movable grate by controlling the driving device.

13. A solid fuel boiler comprising a staged combustible solid fuel boiler air supply device according to any one of claims 1, 12 or 13.

The solid fuel is supplied to the upper surface of the movable grate provided in the combustion chamber by the fuel supply unit and the driving device drives the movable grate;
Wherein the air supply means supplies air to a first region of the movable grate lower end and the solid fuel is ignited by the ignition device and the supplied air;
The solid fuel is conveyed to the upper side of the second region by the movable grate and the air supply means supplies air to the second region so that a flame is generated and the solid fuel is burned, ; And
And the solid fuel is transported to the upper side of the third region by the movable grate and the air supply means supplies air to the third region so that the char is burnt. A stepwise combustion method using an air supply device.

18. The method of claim 17,
A volumetric sensor for sensing the volume of the solid fuel in real time, and a temperature sensor for measuring the temperature in the combustion chamber in real time,
Controlling the amount of air supplied to each of the first region, the second region and the third region by controlling the air supply means based on the measurement data measured by the volume sensor and the temperature sensor, Further comprising the step of supplying air to the boiler.

19. The method of claim 18,
Wherein the speed control unit controls the moving speed of the movable grate by controlling the driving unit based on the measurement data measured by the volume sensor and the temperature sensor. .

19. The method of claim 18,
Wherein the amount of air supplied to the third region is larger than the amount of air supplied to the second region and the amount of air supplied to the second region is larger than the amount of air supplied to the first region. A stepwise combustion method using an air supply device.