KR101490995B1 - Automatic combustion system for cremation furnace and control method thereof - Google Patents

Abstract

The present invention relates to an automatic combustion system for a cremator, which comprises: a central control room with a loop circuit which determines the fuel feed rate of a main combustion burner and a re-combustion burner in order to correspond to control variables, including a temperature value, a pressure value, and an oxygen value, inputted from sensors that are installed inside or outside a cremator including a main combustion chamber and a re-combustion chamber, and which determines a combustion air feed rate in proportional to the fuel feed rate; a cremator local control panel which is connected to the loop circuit, and supplies fuel corresponding to the fuel feed rate and combustion air corresponding to the combustion air feed rate to the main combustion burner and the re-combustion burner; a heat exchanger power panel which is connected to the loop circuit, and controls a heat exchanger fan, a first cool air control damper, and a second cool air control damper in order to supply cool air to a heat exchanger; an inducing ventilator which is connected to the loop circuit, and controls the rotations per minute (RPM) of the inducing ventilator at the front side of a chimney of the cremator in order to maintain the internal pressure of the main combustion chamber within a predetermined pressure range; and a reactor control panel which controls a selective non-catalytic reactor in order to supply ammonia and compressed air to the inside of a third combustion chamber in the upper part of the re-combustion chamber.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic combustion system,

The present invention relates to an automatic combustion system and a control method thereof, which can make an odorless, lead-free environmentally friendly make-up by inducing complete combustion through a reheater after main combustion.

Generally, in order to remove the problem of air pollution and odor caused by exhaust gas generated during combustion, in addition to the primary combustion by the main combustion furnace, a reheating furnace is provided as a next step, To induce complete combustion and to achieve completely odorless and smokeless (smokeless).

The makeup furnace, which is the background of the invention, is formed to have a size capable of accommodating the entire tube inside thereof, and has a plurality of combustion chambers for forming a long flue length.

However, since only the refractory bricks are used so as to utilize thermal heat efficiently in the main combustion furnace and the reheating furnace of the conventional make-up furnace, or the refractory material mixed with the refractory brick and the ceramic material, i.e., a heterogeneous refractory material is used, And it is disadvantageous in that it is inconvenient in construction because of the increase in the weight of the small size and the reheating area itself and maintenance is inconvenient.

In addition, when damage to the refractory brick itself occurs in the main combustion furnace or the re-burning furnace through long-term operation, it is required to replace the main combustion furnace with the main combustion furnace or the refinery itself. In other words, It is required to have an economical refractory which is optimized for production and maintenance because it costs tens of thousands of won per annum for digestion.

Particularly, in the case of the reheat furnace, heat storage is not required, the function of re-burning the combustion gas burned in the main combustion furnace is firstly demonstrated, and it is possible to withstand the thermal shock generated at this time or to buffer the thermal shock, There is a need for a technique capable of partially replacing only a portion in contact with a flame due to expansion and contraction of the flame.

In addition, in the case of a conventional make-up furnace, since only predetermined combustion is performed within the time range for each combustion process by make-up, it corresponds to the temperature change or pressure change from the main combustion chamber to the re- The combustion process can not be controlled in a variable manner, so that an efficient combustion process can not be carried out, and incomplete combustion is performed, and harmful substances such as nitrogen oxides (NOx) or dioxins are generated in a large amount at the time of makeup.

Korean Patent No. 10-0205565 (Apr. 02, 1999) Korean Patent No. 10-0523322 (October 14, 2005)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a control system for an internal combustion engine having a central control room and a plurality of control panels or power units, An automatic combustion system capable of automatically controlling the complete combustion by proportionally controlling the supply or interruption of fuel and combustion air according to the amount of oxygen and controlling the oxygen concentration and pressure through inverter control to provide an automatic combustion system and a control method thereof will be.

According to an aspect of the present invention, there is provided a method of controlling a main burner and a re-burner burner so as to correspond to control variables including a temperature value, a pressure value, and an oxygen amount value input from a sensor installed inside or outside of a makeup furnace including a main combustion chamber and a re- A central control room having a loop circuit for determining a fuel supply amount and determining a combustion air supply amount in proportion to the fuel supply amount; A make-up furnace connected to the loop circuit for supplying fuel corresponding to the fuel supply amount and combustion air corresponding to the combustion air supply amount to the main burner and the re-burner burner; A heat exchanger power unit connected to the loop circuit for controlling the heat exchanger blower, the first cooling air control damper and the second cooling air control damper so as to supply the cooling air to the heat exchanger; An actuation fan power section connected to the loop circuit for controlling the rotational speed of the induction fan in front of the stack of coasters so as to keep the internal pressure of the main discharge chamber within a predetermined pressure range; And a reactor control panel for controlling the selective non-catalytic reactor to provide ammonia and compressed air into the tertiary combustion chamber at the top of the re-combustion chamber.

The sensor includes a first pressure sensor installed in the main combustion chamber, a second pressure sensor installed in a gas cooler at a front end of the heat exchanger, a flow sensor installed in a first cooling air control damper, A second temperature sensor installed at the outlet of the re-combustion chamber, a third temperature sensor installed at the gas cooler, a fourth temperature sensor provided at the rear end of the heat exchanger, a connection pipe between the outlet of the makeup furnace and the inlet of the gas cooler And may include an installed air amount sensor.

In addition, a combustion chamber pressure control damper controlled by a field control panel for the makeup furnace may further be installed in the vicinity of the air amount sensor.

The gas cooler is interlocked with the second cooling air control damper, exchanges heat between the cooling air forced by the second cooling air control damper and the combustion gas supplied from the connection pipe, The combustion gas can be produced.

The heat exchanger is connected to the downstream end of the gas cooler and includes the heat exchanger blower and the first cooling air control damper provided in a cooling air line at one inlet of the heat exchanger, The cooling air forced by the damper and the blower of the heat exchanger and the quenched combustion gas are exchanged with each other to make the exhaust gas quenched to a temperature of 200 to 700 ° C or the secondary combustion air.

The secondary combustion air may be supplied from the other outlet of the heat exchanger to the inside of the main combustion chamber through a combustion air supply line between the main blowers of the main combustion chamber.

The main blower is connected to the central control room through the field control panel of the makeup furnace and supplies the secondary combustion air to the inside of the main combustion chamber by the inverter controller of the central control room to increase the internal oxygen amount of the main combustion chamber Or reduced.

In addition, the central control room may include a sensor signal processor, a damper controller, a power controller, an inverter controller, a proportional controller, an oxygen concentration controller, and a pressure controller, which are electrically connected to the loop circuit.

The on-site control panel further includes a control system connected to the proportional controller of the central control room for proportionally adjusting the air and the fuel to supply the main burner and the re-burner burner, Can control the air conditioning of the main burner and the burner blower lines of the reheat burner and the opening and closing control of the fuel control sides of the main burner and the fuel burner for each reheat burner.

According to another aspect of the present invention, the combustion of the main burner and the re-burner burner is controlled in correspondence with the temperature value, the pressure value, and the oxygen amount value inputted from the sensor installed inside or outside of the makeup furnace including the main combustion chamber and the re- A preheating step carried out by the central control room to preheat the reheat combustion chamber by igniting the reheat burner; A low combustion stage in which the main combustion burner is ignited when the temperature of the re-burning chamber enters the control temperature region by the preheating step, and low combustion of the main burner is performed in the main combustion chamber; Wherein the temperature of the re-burning chamber is regulated so as to be included in the control temperature region in accordance with high combustion or low-burning repetition of the re-burner burner during low combustion of the main burner; A blowing step of extinguishing the main burner after the low-combustion step and supplying secondary combustion air into the main combustion chamber with a main blower; A re-burning step of re-igniting the main burner to perform re-burning in a main burning chamber; A main combustion chamber temperature regulating step in which the temperature of the main combustion chamber follows the temperature of the re-combustion chamber according to high combustion or low combustion repetition of the main combustion burner; And a cooling step in which the makeup is terminated and cooling is performed after the main exhaustion temperature control step.

Further, the control temperature region may be located between the nitrogen oxide generation temperature region and the dioxin generation temperature region.

Also, the main burner and the re-burner burner may supply the air and fuel proportional to each other to generate a flame, thereby maintaining the internal temperature of the main combustion chamber and the re-combustion chamber at 850 to 900 ° C.

According to one aspect of the present invention, an automatic combustion system according to the present invention is capable of maintaining the internal temperature of the main combustion chamber and the re-combustion chamber at 850 to 900 ° C. by receiving proportionally adjusted air and fuel, The internal temperature can be controlled to 800 DEG C or higher effective as the thermal decomposition temperature region of dioxin and can be controlled to 950 DEG C or less effective for suppressing nitrogen oxides (NOx), so that oxygen deficiency, excessive combustion or the like And it is possible to prevent air pollutants or harmful substances such as nitrogen oxides (NOx) or dioxins from being generated in large quantities at the time of make-up.

The central control chamber according to the present invention may further include a control unit (for example, a control unit) for controlling the internal environment of the main combustion chamber or the re-combustion chamber, By calculating the temperature rise per hour by PLC (Programmable Logic Control) internal calculation, it is possible to control the combustion process efficiently in accordance with the control variable (e.g., temperature, pressure, oxygen amount)

The makeup furnace to which the automatic burning system according to one aspect of the present invention is applied comprises a refractory material for the re-burning loss only by a ceramic fiber material. Therefore, the refractory brick is mainly used, or the conventional main furnace using refractory bricks and ceramic fiber It is possible to manufacture a re-burning chamber which can be lightweight and partially replaceable, and thus it is possible to produce a non-economic problem during manufacture and maintenance, a replacement of refractory bricks due to refractory brick damage, Can be prevented in advance. For example, the time and cost for replacing only the first layer or the first fold made of ceramic fiber can be relatively short or small compared to a refractory brick replacement period (e.g., one month or longer).

Further, even if the high temperature or thermal shock caused by the internal flame of the re-burning loss damages the first layer of the re-burning chamber, only the first layer is separated and replaced in the second layer, thereby providing a furnace with excellent economy.

Since the refractory brick is not provided with the refractory brick itself, it can be free from the problem caused by the refractory brick damage, and the rechargeable burnout can be lightened, which can be very advantageous in the production economy.

Further, when only the ceramic fiber which is a refractory material of the same quality is used in constructing the refractory material for re-ignition loss, the expansion and contraction of the refractory material composed of the refractory brick and the ceramic fiber can be relatively evenly performed, There is an advantage that the development can be prevented in advance.

Further, a coating layer is further provided on one side laminate portion of the main burner chamber or on the other side laminate portion of the reheat burner chamber, which is advantageous in prolonging the replacement life of the ceramic fiber material.

Further, since a compression ceramic fiber is interposed between the main combustion chamber and the re-burning chamber which are stacked vertically, and the main combustion chamber and the re-combustion chamber are coupled to each other by a plurality of bolts and nuts, And it is possible to realize a perfect airtightness between the main combustion chamber and the re-combustion chamber.

In addition, the rail for the refractory bogie of the main burning ladder may include a sloped section where a portion is inclined, so that the refractory bogie can be stably positioned inside the main burner chamber.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of a make-up automatic combustion system in accordance with one embodiment of the present invention.
Fig. 2 is a sectional view of a makeup furnace to which the automatic burning system is applied as shown in Fig. 1. Fig.
3 is a cross-sectional view taken along the line AA shown in Fig.
4 is an enlarged cross-sectional view of circle B shown in Fig.
5 is an enlarged cross-sectional view of a circle C shown in Fig.
6 is an enlarged cross-sectional view of the circle D shown in Fig.
Fig. 7 is an installation view of the automatic burner system shown in Fig. 1; Fig.
Fig. 8 is a graph showing changes in temperature in the makeup furnace by the automatic burning system shown in Fig. 7;
9 is a flow chart of a method for controlling automatic burning of a makeup furnace according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In this embodiment, a layer or a fold is formed by connecting a unit such as a panel or a plate in the surface direction to form the inside of the cosmetic furnace, and a component having an area formed by the thickness of the panel or the plate and the connection .

1 is a block diagram of a make-up automatic combustion system in accordance with an embodiment of the present invention.

Referring to FIG. 1, the automatic burning system includes a central control room 600, a makeup control unit 620, a heat exchanger power unit 640, An attractor fan power unit 660, and a reactor control board 680. [

The central control room 600 may further include an electric facility for remotely monitoring the pre-automatic combustion process, a display facility, a general alarm facility, an automatic manual selection device, and the like.

The central control room 600 is provided with a control unit for controlling the fuel supply amount of the main burner and the re-burner burner so as to correspond to the control variables including the temperature value, the pressure value, and the oxygen amount value input from the sensors installed inside or outside of the makeup furnace, And a loop circuit for determining the combustion air supply amount in proportion to the fuel supply amount.

7, the combustion air supply amount is supplied to the main burner 170 and the re-burner burner 230 through the burner blower 175 and the air control sides 622 and 623, It may mean the flow rate of the primary combustion air to be supplied.

Also, the loop circuit may be a circuit used in a one loof controller. The loop circuit includes a sensor signal processor, a damper controller, a power controller, an inverter controller, a proportional controller, an oxygen concentration controller, and a pressure controller, which are included in the substantial control means of the central control room, can do.

For example, the sensor signal processor may be configured to receive sensing values of various sensors to be described later, and to input basic information for performing control.

The damper controller is capable of performing opening and closing control of various dampers to be described later or controlling the amount of opening and closing of dampers to be described later. The damper controller is operable to operate actuators such as step motors or gear motors provided in the respective dampers, ≪ / RTI >

In addition, the power controller can be configured in a circuit so as to perform the function of providing or shutting off power to the various blower or motor operating apparatus described later.

Further, the inverter controller controls the rotation speed of the motor of the blower (that is, the induction motor having the induction motor) by the inverter circuit, by controlling the rotation speed of the motor of the blower to be described later as a variable voltage variable frequency (VVVF: Variable Voltage Variable Frequency) And can control the pressure of the combustion gas in accordance with the variable speed control of the rotational speed of the motor. The rotational speed of the induction fan may refer to the rotational speed of the motor shaft of the induction motor of the induction fan or the blowing fan coupled to the motor shaft.

Further, the proportional controller can play a role of determining the combustion air supply amount in proportion to the fuel supply amount of the main burner and the re-burner burner, and it is possible to control the combustion air supply amount in accordance with the burner ignition temperature and time timing And the calculation method and method can be implemented by a proportional control formula or algorithm which is known for controlling the temperature in a normal high temperature furnace. Therefore, in the present embodiment, the proportional control formula is expressed by a formula Or algorithm.

The oxygen concentration controller may be a circuit device for calculating the oxygen content with respect to the flow rate of the combustion gas flowing in the makeup furnace and implementing the oxygen concentration calculation formula using a normal oxygen concentration sensor.

Also, the pressure controller may be a circuit device configured to calculate the pressure using the flow rate of the combustion gas and the volume of the cosmetic furnace and the associated piping.

The make-up control panel 620 is connected to the loop circuit and is responsible for supplying the fuel corresponding to the fuel supply amount and the combustion air corresponding to the combustion air supply amount to the main burner and the re-burner burner .

In addition, the make-up control panel 620 can control the opening and closing of the refractory door 160 of the main combustion chamber 100 corresponding to the automatic door or the automatic door of the entire room (not shown) And can be configured to control automatic cooling or automatic loading or unloading of the fireproof truck 500 after completion of the makeup.

The heat exchanger power module 640 is connected to the loop circuit and is connected to the heat exchanger blower 702 and the first cooling air control damper 701 (see FIG. 7) so as to supply the cooling air to the heat exchanger 700 And the second cooling air control damper 752, and can be constituted by electrical equipment corresponding to this role.

The attracting fan power module 660 is connected to the loop circuit and controls the rotational speed of the manpower fan 770 in front of the stack 771 of the makeup furnace so as to keep the internal pressure of the main combustion chamber within a predetermined pressure range And can also be constituted by electric equipment corresponding to the role.

The reactor control panel 680 may be responsible for controlling the selective non-catalytic reactor 760 to provide ammonia and compressed air into the tertiary combustion chamber 200a (see FIG. 7) above the re-combustion chamber. The selective non-catalytic reactor 760 may be connected to the tertiary combustion chamber 200a through an injection line 761 to supply ammonia and compressed air.

The reactor control panel 680 can adjust the amount of ammonia spray corresponding to the control variables and can automatically pulsate after completion of the makeup.

Further, the dust generated in the cosmetic furnace can be collected through the filter and dust collector 720 and the remnant processing apparatus (not shown) connected thereto.

FIG. 2 is a sectional view of the makeup furnace to which the automatic burning system is applied as shown in FIG. 1, and FIG. 3 is a sectional view taken along the line A-A shown in FIG.

2 or 3, the makeup furnace according to the present embodiment may be a makeup facility for completely burning or incinerating a body, a body other than a person, or a body requiring a makeup through incineration, or a makeup facility including such a makeup furnace .

The present embodiment may relate to a structure in which the re-combustion chamber 200 is located above the main combustion chamber 100 and a separate combustion chamber 200a (for example, a tertiary combustion chamber) is provided above the re-combustion chamber 200 And may be a known secondary or tertiary combustible makeup, and may not be limited to those shown in the drawings. In this case, the inner wall of the separate combustion chamber and the refractory material forming the ceiling may be formed of multilayer or multilayer refractories of the same quality, and the refractory material of the same quality may be composed of an adhesive for connecting the ceramic fiber and the ceramic fiber to each other.

For illustrative purposes, this embodiment can be described including a primary combustion chamber 100, a primary combustion chamber 100, a secondary combustion chamber heat recovery chamber 200, and a tertiary combustion chamber 200a.

Here, the main combustion chamber 100, the inner combustion chamber 300, the re-combustion chamber 200, and the tertiary combustion chamber 200a may be a combustion furnace or an incinerator.

The main combustion chamber 100 may include one side frame 110 to have an enclosure structure by connecting (e.g., welding or bolting) the steel plates to each other.

One frame 110 is located at the bottom of the make-up furnace, where one side can refer to the lower portion of the make-up furnace.

The main combustion chamber 100 includes a heat insulating board 120 disposed on an inner surface of the frame 110, a refractory brick 130 formed on an inner surface of the heat insulating board 120, And one side laminated portion 140 disposed on the inner side.

The bottom 101 of the main combustion chamber 100 may be made of refractory concrete.

The heat insulating board 120 may be installed or constructed so as to form a front surface, both sides and a rear surface along the rim of the bottom 101 of the main combustion chamber 100. The heat insulating board 120 can be used at room temperature or a safety temperature of 1200 占 폚 and is selected from heat resistant materials such as silicon dioxide (SiO2) (silica), aluminum oxide (Al2O3) (alumina), iron oxide (Fe2O3) Or a mixture thereof, but may not be limited thereto. In the present embodiment, the ceramic fiber or ceramic fiber material may refer to a built-in component such as a panel, a plate, or a block made of a refractory material or a refractory material made of silicon dioxide and aluminum oxide.

The refractory brick 130 is made of chromium, zirconium and the above-mentioned heat resistant material and can be used at room temperature or a safety temperature of 1000 ° C. to 1400 ° C. and can be made of a corrosion resistant material or a known refractory brick material, And may be manufactured as a unit body so as to be capable of being assembled by engaging or laminating.

The one side laminated portion 140 is made of a ceramic fiber material and has a first fold 140-1 and a second fold 140-2 on the front side, the both side faces, the back face side and the ceiling side of the main combustion chamber 100, As shown in Fig. Here, the one-side laminated portion 140 of the ceramic fiber material may be used at room temperature or a safety temperature of 1000 ° C to 1600 ° C, and may be composed of a laminate or a joint-mountable panel or plate type unit.

Here, the second ply 140-2 of the one side laminate part 140 may be attached to the refractory bricks 130 using an adhesive or an adhesive agent (not shown) used in a furnace or an incinerator. In the same manner, the first ply 140-1 may also be attached to the second ply 140-2 using the adhesive.

The first ply 140-1 may be directly closed to the flames generated in the main combustion chamber 100. [ Even if the first layer 140-1 is expanded or contracted due to the expansion or contraction of the flame or the thermal shock due to long-term operation of the makeup furnace, the maintenance person can not remove only the first layer 140-1 from the second layer 140 -2). ≪ / RTI >

4 is an enlarged cross-sectional view of circle B shown in Fig.

Referring to FIG. 4, a coating layer 150 may be further provided on the first layer 140-1 corresponding to the outer surface of the one-side laminated portion 140.

Here, the coating layer 150 may be formed or applied to the first layer 140-1 in such a manner as to be coated with a thickness of 4 mm as a fiber-based coating agent (crystallized light fiber).

3, the inner cylinder 300 is connected to the main combustion chamber 100 and serves as a combustion gas exhaust passage connecting the re-combustion chamber 200 and the main combustion chamber 100 with each other. have.

Further, a combustion gas discharge passage may be further provided between the re-combustion chamber 200 and the tertiary combustion chamber 200a.

The inner fl y 300 may also include multilayer or multilayer ceramic fi bers 301 and 302. The ceramic fibers 301 and 302 may be composed of laminate-like panel or plate-shaped unit pieces.

In addition, the makeup furnace according to the present embodiment may include a re-burning chamber 200 located above the main combustion chamber 100 so as to penetrate through the inner burning chamber 300.

2, the re-burning chamber 200 includes a second frame 210 disposed on one side of the first frame 110 in correspondence with one side frame 110 of the main combustion chamber 100, The other side laminated portion 220 of the ceramic fiber material disposed on the inner side of the other side. Here, the other laminated portion 220 of the ceramic fiber material may be used at room temperature or a safety temperature of 1000 ° C to 1600 ° C, and may be formed of a laminate-like panel or plate type unit.

In addition, the bottom 203 of the re-burning chamber 200 may be made of castable material of refractory material. At the bottom of the bottom 203 of the re-burning chamber 200, there may be installed diverse fire-resistant materials forming the ceiling of the main combustion chamber 100.

The other side laminated portion 220 of the re-burning chamber 200 may be formed in the same manner as the main burn chamber 100 shown in FIG. 2 except for the portion where the fire- 100 may have a lamination thickness W2 corresponding to the total thickness W1 of the heat insulating board 120, the refractory bricks 130, and the one-side lamination unit 140. [ Here, the refractory door 160 is a motorized lifting type that maintains a hermetic structure in close contact with the rim of the refractory doorway of the refractory bogie 500 (for example, fireproof bogie) of the main combustion chamber 100, .

That is, the lamination thickness W2 of the portion of the other side laminate portion 220 of the re-burner chamber 200 made only of the same quality refractory material (e.g., ceramic fiber) is smaller than the thickness W1 of the refractory material, , It can have the same or equivalent dimensions.

The other laminate 220 of the re-burner 200 may have relatively higher expansion and contraction than the other refractory made of the ceramic fiber which is the refractory brick 120 and the one laminate 140, It is possible to prevent a phenomenon such as occurrence of ash separation.

In addition, the tertiary combustion chamber 200a may be formed of the same ceramic fiber as the other side lamination portion 200 of the re-burning chamber 200 described above.

The other laminated portion 220 is laminated along the wall thickness direction or the ceiling thickness direction of the re-burning chamber 200 and is made of one or more layers (for example, ceramic fiber) composed of homogeneous refractory materials 220-1, 220-2, and 220-3, a first layer 220-1 located on the inner space side of the re-burning chamber 200 and in direct contact with the flame, And a second layer 220-2 stacked on the first layer 220-1 and having a thickness corresponding to the first layer 220-1.

5 is an enlarged cross-sectional view of the circle C shown in Fig.

Referring to FIGS. 2 and 5, the first layer 220-1 and the second layer 220-2 may have the same or equivalent thicknesses k1 and k2.

The other layer stack 200 has a thickness k3 which is relatively thicker than the thickness of the first layer 220-1 or the second layer 220-2 and the thickness of the second layer 220-2, And a third layer 220-3 stacked between the first layer 210 and the second layer 220-3.

The layers 220-1, 220-2, and 220-3 of the other side laminated portion 200 may be formed by using an adhesive agent for use in a known combustion furnace or an incinerator, as described in the description of the main combustion chamber 100, (Not shown) or a refractory mortar, or may be attached to the other frame 210, and if damage is caused by contact with the flame among the layers 220-1, 220-2, 220-3 The cost and the construction time can be reduced or shortened compared to replacing the refractory bricks by replacing only the damaged areas (for example, the first layer 220-1 and the coating layer 250).

The heat transfer of the flame may occur sequentially through the first layer 220-1, the second layer 220-2, and the third layer 220-3. At this time, the first layer 220-1 may be a portion where the thermal expansion may cause the largest expansion and contraction, and the damage may be relatively large as compared with the other layers 220-2 and 220-3. Accordingly, even if the first layer 220-1 is damaged due to long-term operation of the make-up furnace, the maintenance person can remove and replace only the first layer 220-1 from the second layer 220-2 And then the coating layer 250 can be re-applied.

Since the first layer 220-1 and the second layer 220-2 are relatively thin compared to the third layer 220-3, the thickness of the first layer 220 -1) may be advantageous in terms of cost.

5, the first layer 220-1 corresponding to the outer surface of the other laminate 220 may further include a coating layer 250 corresponding to the same thickness and coating agent as described above .

The main combustion chamber 100 includes a refractory door 160 installed in a front wall of the main combustion chamber 100, a main combustion chamber 170 installed in a rear wall of the main combustion chamber 100, And a rail 190 for the refractory bogie 500 installed on the floor 101 of the main combustion chamber 100.

At this time, the main blowing port 180 may be inclined toward the flame generated from the main burner. Accordingly, the main blowing fan 181 (for example, the secondary blowing air blowing fan) mounted on the main blowing port 180, The secondary combustion air having a temperature of 200 占 폚 can be smoothly transferred to the spark side through the required air amount, and the secondary combustion can be smoothly performed, thereby inducing complete combustion.

Also, the main burner 170 can be adjusted in angle, such as a vertical angle of 25 °, a left / right angle of 15 °, a back and forth movement of 500 mm, and the like.

Further, since the main burner 170 is coupled to the loop circuit of a controller (not shown) that automatically controls the temperature, pressure, and combustion amount in the furnace (main combustion chamber or recharging chamber), complete combustion can be realized, As the gas can stay in the main combustion chamber 100 for more than 2 seconds, the complete combustion can be induced.

The rails 190 for the fireproof truck 500 may be installed on the basis of the upper surface of the bottom 101 of the main combustion chamber 100. A blowing device 191 is further provided at the bottom of the bottom 101 of the main combustion chamber 100 to supply the cooling air to the side of the refractory 500 on the rail 190 through the bottom 101 Can be.

The blowing device 191 includes a blower located on the lower side of the makeup furnace, a main blowing pipe connected to the discharge port of the blower, and a plurality of branch pipes branched from the main blowing pipe, And may extend upwardly through the bottom 101 of the base plate 110. [

3, the rail 190 for the refractory bogie 500 has a horizontal section L1 extending from one end of the rail to the vicinity of the front wheel on the side of the refractory door 160, And the inclined section L2 may be inclined by an inclination angle S such that the front portion of the refractory bogie 500 is positioned in a slightly downward direction.

That is, the height of the position of the rail 190 near the front wheel and the height h1 of one end of the rail at the side of the refractory door 160 may be relatively larger than the height h2 of the other end of the rail.

The front wheel of the refractory bogie 500 can be moved in the inclined section L2 of the rail 190 by a predetermined amount, The wheel bracket for supporting the front wheel can be stopped by being caught by the stopper frame 190-1 at the other end of the rail so that the refractory 500 is inclined by the inclination angle S As shown in FIG.

Since the refractory bogie 500 can be stopped tilted by the inclination angle S, the refractory bogie 500 can be unexpectedly moved toward the refractory gate 160 due to impacts and vibrations that can be generated during the incineration operation. Can be prevented from being moved, and can stably remain on the rail (190).

In addition, a reheat burner 230 may be provided on the side of the re-burning chamber 200. In addition, an access hole or maintenance passage 240 which can be opened and closed by a door may be further provided on the other side of the re-burning chamber 200.

The reheat burner 230 is completely burned by mixing the unburned carbon and the organic compound discharged from the main combustion chamber 100 at a high temperature and installed in an eccentric direction, that is, inclined to the side wall of the reheat chamber 200, And exhaust gas can be brought into cryogenic contact to induce complete combustion. That is, the flame generated in the re-burner 230 is influenced by the flow of the exhaust gas, and forms a vortex while being circled or circled in the plane of the re-combustion chamber 200, thereby inducing complete combustion can do.

The re-combustion chamber 200 is installed inside the re-combustion chamber 200 to partition the first space 201 where the inner cylinder 300 is located and the second space 202 opposite to the inner cylinder 300 And may further include a vortexing coating wall body 260. Here, the vortex hole may be a unit used for disposing the refractories having holes in the block shape in the horizontal direction and constructing them so as to have a zigzag structure in the vertical direction.

The vortexed porosity wall 260 is made of a refractory material so as to have a plurality of holes and the flame of the reheat burner 230 or the gas and dust supplied from the main combustion chamber 100 are formed on the surface of the vortex- By causing the combustion of indirect contact by radiation heat (heat storage) of the refractory, it is possible to more effectively realize the lead-free, odorless, and low-pollution of the cosmetic furnace.

That is, the vortex-coated potting wall 260 can pass the exhaust gas generated in the main combustion furnace to increase the re-burning effect, and can remove smoke and odor.

6 is an enlarged cross-sectional view of the circle D shown in Fig.

Referring to FIG. 6, the main combustion chamber 100 and the re-combustion chamber 200 may be connected to each other by a plurality of bolts and nuts, which are coupling means 198 with a compression ceramic fiber 199 interposed therebetween.

In this case, since the gap between the main combustion chamber 100 and the re-combustion chamber 200 can be removed, the cosmetic furnace according to the present embodiment can be constructed in a closed structure by the compression ceramic fiber 199, (200) can be manufactured, and perfect sealing between the main combustion chamber (100) and the re-combustion chamber (200) can be realized.

2 or 3, the main combustion chamber 100 and the recharging chamber 200 further include reinforcement frames 400 and 401 connected to the outer surfaces of the main combustion chamber 100 and the recharging chamber 200 .

Here, the reinforcing frames 400 and 401 may be I beams or steel beams having an H-shaped cross section. It may also be a shaft member or a frame structure which may not be limited to a steel beam but which can perform structural reinforcement. The reinforcing frames 400 and 401 may be formed as a plurality of spaced apart skeletal structures to reinforce the structural rigidity of the main combustion chamber 100 and the re-combustion chamber 200. The reinforcing frames 400 and 401 are further provided with holes (not shown) to which unshown lugs or lifting cables can be connected so that the main smoke chamber 100, the recharging chamber 200, and the reinforcing frames 400 and 401 May be enabled.

Further, the reinforcing frames 400 and 401 are further provided with a plurality of bolt holes (not shown) so that an exterior interior panel or the like can be constructed so that the makeup furnace itself can have an aesthetic characteristic.

Hereinafter, the detailed configuration of the automatic burner system according to the present embodiment will be described.

Fig. 7 is an installation view of the automatic burner system shown in Fig. 1; Fig.

7, a field control panel 620, a heat exchanger power module 640, an attractor fan power module 660, and a reactor control panel 680 are connected to the central control room 600 of the automatic combustion system as a makeup .

The central control room 600 takes into consideration the internal environment of the main combustion chamber 100 or the re-combustion chamber 200, that is, control variables (e.g., temperature, pressure, oxygen amount) And the temperature rise per unit time is calculated by an internal calculation of PLC (Programmable Logic Control), whereby the efficient combustion process can be automatically controlled in accordance with control variables (e.g., temperature, pressure, and oxygen amount)

Here, the calculation method and formula may be proportional control formulas or algorithms that can be obtained through a number of experiments according to control variables (e.g., temperature, pressure, oxygen amount). Therefore, in the present embodiment, . However, the calculation method and the formula can be implemented by applying the method used in the one controller of the loop controller to the makeup furnace having the main combustion chamber 100, the re-combustion chamber 200, and the tertiary combustion chamber 200a.

However, the temperature of disappearance of the main stream of the make-up furnace and the disappearance of the re-burning can be controlled to 800 ° C or more, which is effective as a thermal decomposition temperature region of dioxin, and can be controlled to 900 to 950 ° C or less, which is effective for suppressing nitrogen oxides . Through this, unstable combustion such as oxygen deficiency or excessive combustion can be prevented.

The sensors used in the automatic combustion system for make-up include a first pressure sensor P1 installed in the main combustion chamber 100, a second pressure sensor P2 installed in the gas cooler 750 at the front end of the heat exchanger 700, A first temperature sensor T1 provided at the main combustion chamber outlet 109 corresponding to the internal combustion engine, a second temperature sensor T2 provided at the recharge chamber outlet 209, a flow rate sensor F1 provided at the cooling air control damper 701, A third temperature sensor T3 installed at the gas cooler 750, a fourth temperature sensor T4 installed at the rear end of the heat exchanger 700, an outlet 208 of the makeup furnace, And an air amount sensor A1 installed in the connection pipe 740 between the inlet 751 of the air conditioner and the air conditioner.

The sensor may be electrically connected to the field control panel 620 via a makeup line and may be input to the sensor signal processor of the central control room 600 through the field control panel 620 as a makeup.

In addition, a combustion chamber pressure control damper 741 controlled by a field control panel 620 may be installed in the connection pipe 740 in the vicinity of the air amount sensor A1.

In the description of the present embodiment, various dampers (for example, control damper) including the combustion chamber pressure control damper 741 refer to an air conditioning system, and include a damper housing coupled through a pipe member such as the coupling pipe 740, An actuator such as a motor for adjusting the angle of the vane, and an actuator for controlling the actuation of the actuator and the damper opening by adjusting the angle of the vane, And a driving circuit connected to the damper controller of the central control room.

The gas cooler 750 is interlocked with the second cooling air control damper 752 so that the cooling air forced by the second cooling air control damper 752 and the combustion gas supplied from the connection pipe 740 Exchanged with each other to form a quench gas which is quenched to a temperature of 700 to 850 ° C.

The gas cooler 750 may be a device that performs heat exchange through mixing of the forced cooling air and the combustion gas.

On the other hand, the heat exchanger 700 may be a device that is merely heat-exchanged without being mixed with each other in a shell (not shown) separated or isolated from each other.

The heat exchanger 700 is connected to the rear end of the gas cooler 750 and includes a heat exchanger blower 702 installed in the cooling air line of the inlet 703 at one side of the heat exchanger 700, And a control damper 701. The cooling air forced by the first cooling air control damper 701 and the heat exchanger blower 702 and the quenched combustion gas are heat exchanged with each other, And the second combustion air.

That is, the combustion gas quenched in the gas cooler 750 is exhausted by the heat exchanger 700, and the forced cooling air can be the secondary combustion air by the heat exchanger 700.

The temperatures of the gas cooler 750 and the heat exchanger 700 can be measured by the third temperature sensor T3 and the fourth temperature sensor T4 respectively and the measured temperature is measured by the gas cooler 750 and the heat exchanger The damper opening degree of the first cooling air control damper 701 and the second cooling air control damper 752 can be controlled until the target temperature of the first cooling air control damper 701 and the second cooling air control damper 752 is reached.

The secondary combustion air flows from the other outlet 703 of the heat exchanger 700 to the main combustion chamber 100 through the combustion air supply line 705 between the main blowers 181 of the main combustion chamber 100, As shown in FIG.

That is, the secondary combustion air can flow directly through the main air outlet 180 provided in the rear wall of the main combustion chamber 100, as shown in FIG. 3, without passing through the main burner 170. At this time, the secondary combustion air may be at a temperature at which the flame is not turned off inside the main combustion chamber 100, for example, at a temperature of 200 ° C.

The secondary combustion air may be discharged to the stack 771 through the bypass line 772 and the bypass valve 773 when the secondary combustion air does not need to flow into the main combustion chamber 100.

The exhaust gas that exits the heat exchanger 700 through the rear end of the heat exchanger 700 having the fourth temperature sensor T4 is supplied to the filter 714 on the exhaust line and the selective catalytic reactor 730, 770 to the pollutant-free state through the stack 771.

Also, the main blower 181 may be connected to the central control room 600 via the field control panel 620 with the makeup. The main blower 181 supplies the secondary combustion air having a flow rate controlled by the variable voltage variable frequency (VVVF) control of the inverter controller of the central control room 600 to the inside of the main combustion chamber 100, It is possible to increase or decrease the internal oxygen amount of the chamber 100. The internal pressure of the combustion chamber such as the main combustion chamber 100 can be maintained at a predetermined proper pressure by the variable voltage variable frequency (VVVF) control.

In addition, the make-up control panel 620 is connected to the proportional controller of the central control room 600 so as to proportionally adjust the air and fuel to the main burner 170 and the re-burner burner 230 And may further include a control system 621.

The control system 621 controls the air control valves 622 and 623 of the burner blower lines of the main burner 170 and the reheat burner 230 and the air control valves 622 and 623 of the main burner 170 and the re- Closing control of the fuel control sides 624 and 625, that is, the opening / closing or opening / closing ratio of the fuel control sides 624 and 625.

In addition, the make-up control panel 620 is provided on the bottom of the main burning chamber 100 of the make-up furnace and is configured to control the blowing unit 191 for cooling the refractory carriage 500 by supplying cooling air E1).

In addition, the make-up field control panel 620 may be configured E2 to control the blower blower 175. Here, the burner blower 175 may serve to supply the primary combustion air to be supplied to the air control sides 622 and 623 of the burner blowing line for each of the main burner 170 and the re-burner burner 230 .

In particular, the temperature control of the main combustion chamber 100 can be accomplished by control measures such as control variables such as temperature 850-900 占 폚, control elements such as the main burner fuel feed rate, fuel and combustion air proportional control.

In addition, the temperature control of the re-combustion chamber 200 can be performed by control means such as control variables such as a temperature of 850 to 900 DEG C, a control element such as a re-burner fuel supply amount, fuel and combustion air proportional control.

The control of the oxygen concentration in the main combustion chamber 100 and the recharge chamber 200 is controlled by control variables such as the oxygen content in the main combustion chamber 100 or the reboiler chamber 200, a control element such as the main blower 181, By controlling the rotation speed through the inverter (VVVF) control of the inverter (VVVF). Here, the internal oxygen amount in the main combustion chamber 100 or the re-combustion chamber 200 can be measured through the air amount sensor A1.

The control of the pressure in the main combustion chamber 100 and the recharging chamber 200 is controlled by a control parameter such as the pressure in the main combustion chamber 100 or the reboiler chamber 200, a control element such as an induction fan 770, Such as controlling the rotational speed through the inverter (VVVF) control of the inverter (VVVF). Here, the pressure inside the main combustion chamber 100 or the re-combustion chamber 200 can be measured by the first pressure sensor P1.

That is, the make-up control panel 620 can automatically or manually control the temperatures of the main combustion chamber 100 and the re-combustion chamber 200, the burner flame, and the combustion chamber internal pressure by proportionally adjusting air and fuel, It is possible to automatically or manually control the burner flame according to the state of the furnace 100 in the main combustion chamber 100 and the re-combustion chamber 200, the change in the temperature, the pressure and the oxygen amount, which are control variables.

For example, the combustion process needs to be automatically controlled according to the state of the fluid (body) at the time of makeup (for example, the amount of water contained or contained in the fluid is small or the fluid itself is large or small) The burner flame is automatically or manually controlled according to the state of change in the present embodiment.

Hereinafter, a control method by the automatic burner system according to the present embodiment will be described.

FIG. 8 is a graph showing changes in temperature in the makeup furnace by the automatic burning system shown in FIG. 7, and FIG. 9 is a flowchart of the automatic burning control method according to the present invention.

Referring to FIG. 8, in the method for controlling automatic combustion by make-up, the main burning process and the re-burning process may be ignited sequentially, and the temperature value inputted from the sensor installed inside or outside of the makeup furnace including the main combustion chamber and the re- , A method of controlling the combustion of the main burner and the re-burner burner by the central control room in correspondence with the pressure value and the oxygen amount value.

Referring to FIGS. 8 and 9, the central control room can perform a preheating step (S100) in which the reheat burner is ignited to preheat the reheat combustion chamber.

By this pre-heating step (S100), not only the re-burning chamber is preheated but also the main burning chamber connected to the re-burning chamber through the inner cylinder can be preheated.

Also, the vortexed porosity wall of the re-burning chamber is also heated, so that the smoke and odor of the combustion gas flowing along with the disappearance of the re-burning gas can be removed, and the combustion of the residual pollution material in the combustion gas can be achieved.

In addition, the central control chamber can perform the low combustion step (S110) in which the main combustion burner is ignited when the temperature of the re-combustion chamber enters the control temperature region by the preheating step and low combustion of the main burner is performed in the main combustion chamber have. Here, the low combustion step (S110) may mean the first low combustion.

Here, ignition of the main combustion chamber is performed more efficiently since the internal temperature of the main combustion chamber is raised by the preheating step (S100).

In addition, the central control room may include a re-combustion chamber temperature control step (S120) in which the temperature of the re-combustion chamber is regulated so as to be included in the control temperature range in accordance with high combustion or low-combustion repetition of the reburn burner during low combustion of the main burner ). ≪ / RTI >

In addition, after the low combustion stage, the main burner may be extinguished and a blowing step (S130) may be performed in which secondary combustion air is supplied into the main combustion chamber through the main blower.

Particularly, the secondary combustion air supplied to the inside of the main combustion chamber in the blowing step S130 is heat-exchanged with the combustion gas generated by the preheating, low combustion of the main combustion burner, etc., Can be performed efficiently.

In response to this help, a re-burning step (S140) may be performed in which the main burner is re-ignited and re-burning is performed in the main burner. Here, the re-combustion step (S140) may mean the second low-temperature combustion.

In addition, the above-described regeneration disappearance temperature control step S120 may continue in the middle of the ventilation step S130 and the re-combustion step S140.

At the same time, high combustion or low combustion of the main burner can be repetitively performed, so that the main combustion chamber temperature control step (S150) in which the temperature of the main combustion chamber follows the temperature of the re-combustion chamber can be performed.

In addition, the central control room may perform a cooling step (S160) in which after the second temperature control step (S150), the makeup is terminated, that is, cooling is performed after the main burner and the re-burner burner are extinguished.

At this time, the control temperature region may be located between the nitrogen oxide generation temperature region and the dioxin generation temperature region, and may be 850 to 900 ° C.

To this end, the main burner and the reheat burner generate the flame by supplying air and fuel proportional to each other, thereby maintaining the internal temperature of the main combustion chamber and the reburning chamber at 850 to 900 ° C.

According to the embodiment described above, since the refractory material of the re-combustion chamber is made of only the ceramic fiber material, the refractory brick is mainly used, or in comparison with the conventional main burner or conventional re-burner using refractory bricks and ceramic fiber, It is possible to manufacture a rechargeable rechargeable battery which is light in weight and can be partially replaced and can solve the problem of non-economic problems in manufacturing and maintenance of rechargeable rechargeable batteries and failure of long-term operation of the makeup rechargeable battery due to refractory brick damage.

Further, according to the present embodiment, under the condition that the temperature change may not be influenced by the outside depending on the construction of the refractory material, the automatic combustion system as a makeup system may automatically adjust the amount of supply of fuel and combustion air And by controlling the oxygen concentration and the pressure through the inverter control, the complete combustion can be automatically controlled.

100: Destroyed 200: Re-burned
300: Inner year 400, 401: Reinforcing frame
500: Refractory bogie 600: Central control room

Claims (12)

delete delete delete delete delete delete delete delete delete The burning of the main burner and the reheater burner is controlled by the central control room in correspondence with the temperature value, the pressure value, and the oxygen amount value inputted from the sensor installed in the inside or outside of the makeup furnace including the main burning disappearance and re- In the control method,
As being advanced by the central control room,
A preheating step in which the reheat burner is ignited to effect preheating in the reheat combustion chamber;
A low combustion stage in which the main combustion burner is ignited when the temperature of the re-burning chamber enters the control temperature region by the preheating step, and low combustion of the main burner is performed in the main combustion chamber;
Wherein the temperature of the re-burning chamber is regulated so as to be included in the control temperature region in accordance with high combustion or low-burning repetition of the re-burner burner during low combustion of the main burner;
A blowing step of extinguishing the main burner after the low-combustion step and supplying secondary combustion air into the main combustion chamber with a main blower;
A re-burning step of re-igniting the main burner to perform re-burning in a main burning chamber;
A main combustion chamber temperature regulating step in which the temperature of the main combustion chamber follows the temperature of the re-combustion chamber according to high combustion or low combustion repetition of the main combustion burner; And
And a cooling step in which the makeup is terminated after cooling the temperature of the main burning room temperature, and cooling is performed. 11. The method of claim 10,
Wherein the control temperature region is located between a nitrogen oxide generation temperature region and a dioxin generation temperature region. 12. The method of claim 11,
Wherein the main burner and the re-burner burner supply air and fuel proportional to each other to generate a flame, thereby maintaining the internal temperature of the main combustion chamber and the re-burning chamber at 850 to 900 ° C. Automatic combustion control method by make - up.

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