KR20020047451A - The incinerator melting - Google Patents

Abstract

PURPOSE: An incinerator is provided to easily remove particles attached to an exhaust duct of the incinerator without stopping the operation of the incinerator by attaching a particle removing device to the exhaust duct. CONSTITUTION: An incinerator includes a slag collecting chamber(110) for collecting slags and an exhaust duct(120) installed in the slag collecting chamber(110) for exhausting combustion gas to an exterior. A particle removing device is provided at one side of the exhaust duct(120) so as to remove particles attached to the exhaust duct(120) without stopping the operation of the incinerator. The particle removing device includes a head(40) installed at an inner portion of the exhaust duct(120). A blade(42) having a triangle shape is protruded from a front side of the head(40). A driving shaft(30) extends to an exterior of the exhaust duct(120) from a rear side of the head(40). The driving shaft(30) is movably supported by a fixing member(14) of a table(14). A bushing(52) is provided at the fixing member(14).

Description

Incineration Melting Furnace {THE INCINERATOR MELTING}

The present invention relates to an incineration melting furnace, and more particularly, to an incineration melting furnace capable of removing high-temperature solid or molten adherent particles attached to an exhaust duct of an incineration melting furnace without stopping the operation of the incineration melting furnace. It is about.

As shown in FIG. 1, a conventional incineration melting furnace has a dust collecting chamber 110 that collects slag that is melted and dropped into cooling water, and an exhaust duct 120 installed in the dust collecting chamber 110 to discharge combustion gas to the outside. Is equipped.

In the conventional incineration furnace, the high-temperature solid or molten slag particles 112 included in the combustion gas fall into the cooling water 114 below while the combustion gas is discharged out of the furnace through the exhaust duct 120. Some of them and the non-melting fly ash are attached to the inner surface of the exhaust duct 120 together with the combustion gas. Since the attached particles are gradually grown during long-term operation to narrow the internal space of the exhaust duct 120, the power consumption of the manned blower that discharges the combustion gas to the outside is excessively increased, or the exhaust duct 120 during long-term operation. There was a problem in that the continuous operation is impossible by closing the.

Therefore, many methods have been implemented to solve these problems, but there are no fundamental solutions. For example, the method of minimizing the amount of particles discharged from the furnace together with the combustion gas through the improvement of the operation method or the furnace design, and the method of minimizing the attachment of adherent particles by avoiding the abrupt change in the diameter or path of the exhaust duct, etc. However, these methods are not a solution to solve the problem of adhesion of the underlying adhesion particles.

Among the most frequently used examples, there is a method of removing adherent particles attached to the inner surface of the exhaust duct while stopping the operation of the incineration furnace periodically to remove the adherent particles. There was a problem that acts as a factor of increasing the maintenance cost of the plant by stopping the operation.

Accordingly, an object of the present invention is to provide an incineration melting furnace which can easily remove the adhered particles attached to the exhaust duct without stopping the operation of the entire incineration melting system. .

The present invention for achieving the above object, in the incineration melting furnace having a dust collecting chamber for collecting the slag melted and dropped into the cooling water, and the exhaust duct installed in the dust collecting chamber to discharge the combustion gas to the outside, On one side, if the inlet and outlet side pressure difference is increased more than the set value, there is provided an incineration melting furnace, characterized in that the means for removing the adhered particles attached to the inner surface of the exhaust duct without stopping the operation of the incineration melting furnace.

The attached particle removing means attached to the exhaust duct includes: an attached particle removing head having a plurality of blades positioned inside one side of the exhaust duct, a table for rotatably and linearly supporting the drive shaft of the attached particle removing head; And a carrier mounted on the table so as to linearly reciprocate by a rack, pinion and a first motor for rotating the pinion in a forward and reverse direction, and linearly reciprocating a drive shaft of the attachment particle removal head, and mounted on the carrier. A pair of bevel gears and a second motor for rotating the drive shaft of the attachment particle removal head, a differential pressure gauge for measuring the pressure difference between the inlet and the outlet side of the exhaust duct, and the differential pressure measured by the differential pressure gauge. A control unit for controlling the driving of the second motor is characterized in that it comprises a.

In addition, the adhered particle removing means attached to the exhaust duct includes an attached particle removing head which is partitioned into first and second spaces whose upper and lower sides are connected by partition walls, and has a plurality of blades formed on the front surface thereof, and the attached particle removing head. A cooling water supply pipe coaxially installed at a rear surface thereof, one end of which is in communication with the first space, one end of which is in communication with the second space, a table for rotatably and linearly supporting the cooling water recovery tube; A carrier for linearly reciprocating the rack and pinion and a first motor for rotating the pinion in the forward and reverse directions and linearly reciprocating the coolant recovery pipe of the attachment particle removal head on the table; And a pair of bevel gears and a second motor for rotating the coolant recovery pipe of the attached particle removal head, and the coolant supply pipe and the cold A rotary joint bearing the other end of each water recovery pipe therein and having a cooling water discharge port configured to discharge the cooling water recovered through the cooling water recovery pipe at an upper portion thereof, and a cooling water supply unit configured to supply cooling water to the cooling water supply pipe at the rear thereof; And a differential pressure gauge for measuring a pressure difference between the inlet and the outlet side of the exhaust duct, and a controller for controlling the driving of the first and second motors according to the differential pressure measured by the differential pressure gauge.

1 is a cross-sectional view showing a part of a conventional incineration melting furnace,

Figure 2 is a schematic diagram showing a first embodiment of the incineration melting furnace according to the present invention,

Figure 3 is a schematic diagram showing a second embodiment of the incineration melting furnace according to the present invention,

4 is a cross-sectional view showing an extract of the rotary joint structure of the second embodiment according to the present invention;

Figure 5a is a side cross-sectional view showing an extract of the particle attachment head structure of the second embodiment according to the present invention,

5B is a cross-sectional view taken along the line A-A of FIG. 5A.

<Description of the symbols for the main parts of the drawings>

10: table 11: legs

12: rack gear 13: stopper

14: fixing member 15: pinion gear

16: first motor 23: second motor

17, 24: handle 18: carrier

21: first support 22: second support

25: horizontal bevel gear 26: vertical bevel gear

30: drive shaft 32: cooling water supply pipe

34: cooling water recovery pipe 40, 70: adhesion particle removal head

42, 72: blade 50: bearing

52: bushing 60: rotary joint

62: cooling water outlet 64: cooling water supply unit

73: bulkhead 74: first space

75: second space 80: control unit

90: differential pressure gauge

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 2 is a schematic diagram showing a first embodiment of the incineration melting furnace according to the present invention, a dust collecting chamber 110 for collecting the slag melted and melted into the cooling water, and installed in the dust collecting chamber 110 to the combustion gas to the outside An exhaust duct 120 for discharging is provided.

According to a feature of the present invention, one side of the exhaust duct 120 is provided with a means for removing the adhered particles attached to the inner surface of the exhaust duct 120 without stopping the operation of the incineration melting furnace.

The attachment particle removal means includes an attachment particle removal head 40 positioned inside one side of the exhaust duct 120. And the front surface of the attachment particle removal head 40, the blade 42 of the triangular shape is installed to protrude up and down, the drive shaft 30 is connected to the rear of the attachment particle removal head 40 outside the exhaust duct 120, The drive shaft 30 is supported by the fixing member 14 of the table 10 to allow rotation and linear movement. The coupling portion of the fixing member 14 supporting the drive shaft 30 is provided with a bushing 52 having an inner diameter larger than that of the drive shaft 30 to allow linear movement and rotation at the same time.

And, the rack gear 12 is installed on the upper side of the table 10, the lower leg 11 for height adjustment is installed.

And the carrier 18 is located on the upper side of the table 10, the pinion gear 15 that is engaged with the rack gear 12 of the table 10 is installed on the inner surface of the carrier 18, the pinion gear One end of the central axis of the first motor 16 that is capable of forward and reverse rotation is connected to the 15. In addition, a pair of stoppers 13 incorporating a sensor for limiting a moving distance of the carrier 18 are installed on both upper surfaces of the table 10, and the pinion gear is provided at the other end of the central shaft of the first motor 16. The handle 17 for manually rotating 15 is provided.

First and second supports 21 and 22 coupled to the drive shaft 30 and the bearing 50 of the attachment particle removing head 40 are installed at the front and rear of the carrier 18. The first support 21 is provided with a pair of bevel gears 25 and 26 and a second motor 23 for rotating the drive shaft 30 of the attachment particle removal head 40. A pair of bevel gears 25 and 26 are installed on the vertical bevel gear 26 and the first support 21 which are installed at the end of the drive shaft 30 and are connected to the central axis of the second motor 23. It consists of a horizontal bevel gear 25. A handle 17 for manually rotating the horizontal bevel gear 25 is installed at the other end of the central shaft of the second motor 23.

In addition, the differential pressure gauge 90 for measuring the pressure difference between the inlet and the outlet side of the exhaust duct 120 and the first and second motors 16 and 23 according to the differential pressure measured by the differential pressure gauge 90. The control part 80 which controls a drive is provided.

3 shows a second embodiment of the incineration smelting furnace 100 according to the present invention, and descriptions of components overlapping with the first embodiment will be omitted.

In the second embodiment of the incineration melting furnace according to the present invention, as shown in Figures 5a and 5b, the partition wall 73 is installed in the interior of the attachment particle removal head 70 protruding up and down the blade 72 of the right triangle shape do. The partition 73 partitions the inside of the attachment particle removing head 70 into a first space 74 connected to an upper side and a lower side thereof, and a second space 75 behind. In addition, a cooling water supply pipe 32 and a cooling water recovery pipe 34 are coaxially installed on the rear surface of the attachment particle removing head 70, and one end of the dual cooling water supply pipe 32 communicates with the first space 74. One end of the coolant recovery pipe 34 communicates with the second space 75.

3, the coolant recovery pipe 34 may rotate and linearly move to the fixing member 14 of the table 10 and the first and second supports 21 and 22 of the carrier 18. And bevel gears 26 are installed at the same time.

And as shown in Figure 4, the cooling water recovery pipe 34 and the cooling water supply pipe 32, the other end of the bearing 50 is supported by the rotary joint 60, respectively, the rotary joint 60 is the cooling water recovery pipe ( Cooling water outlet 62 for discharging the cooling water recovered through the 34 and the cooling water supply unit 64 for supplying the cooling water to the cooling water supply pipe (32) is formed.

The incineration melting furnace according to the present invention configured as described above is operated as follows.

First, referring to the operation of the first embodiment of the incineration melting furnace according to the present invention, when the particles attached to the growth inside the exhaust duct 120 of the incineration melting furnace 100, the space inside the exhaust duct 120 is narrowed As a result, a pressure difference between the inlet and the outlet of the exhaust duct 120 is generated. And the pressure difference between the inlet and the outlet of the exhaust duct 120 is measured through the differential pressure gauge 90 and sent to the control unit 80, the control unit 80, the pressure difference value measured by the differential pressure gauge 90 and the set pressure difference value By comparing this, if it is equal to or larger than the set value, the first motor 16 and the second motor 23 are driven.

Therefore, the carrier 18 is moved along the table 10 by the pinion gear 15 and the rack gear 12 by the drive of the first motor 16 to linearly move the attachment particle removal head 40, The pair of bevel gears 25 and 26 are engaged by the driving of the second motor 23 to rotate the drive shaft 30 while rotating the attachment particle removal head 40. Therefore, while the slag removal head 40 is rotated and linearly moved, the attached particles attached to the exhaust duct 120 are removed, and the moving distance of the attached particle removal head 40 is outside the exhaust duct 120 or the dust collecting chamber. The stopper 13 provided at both ends of the upper portion of the table 10 restricts the movement of the carrier 18 in order to prevent movement inside the 110. When the carrier 18 comes into contact with the stopper 13 during movement, a signal from the built-in sensor of the stopper 13 sends a signal to the controller 80 to stop forward and backward of the carrier 18.

In addition, the operation of the second embodiment of the incineration melting furnace according to the present invention is configured to continuously supply the cooling water to protect the adhesion particle removal head 70, which resides in the exhaust duct 120 from high temperature, Figure 4 5A and 5B, the coolant flowing into the coolant supply unit 64 formed in the rotary joint 60 passes along the coolant supply pipe 32 to the first space 74 of the attachment particle removing head 70. It moves and cools the attachment particle removal head 70 and then exits into the second space (75) and moves along the coolant recovery pipe (34) communicating with the second space (75), and the cooling water outlet of the rotary joint (60). While repeatedly performing the process of discharging through 62, the attachment particle removal head 70 may be cooled to be used for a long time in the high temperature exhaust duct 120.

As described above, according to the incineration melting furnace of the present invention, it is possible to easily remove slag particles and unmelted fly ash adhering to the inner surface of the exhaust duct even in the state where the operation of the incineration melting furnace is not stopped, thereby reducing labor and improving productivity. There is.

In addition, by continuously supplying the cooling water to the attachment particle removal head, the attachment particle removal head which is always in contact with high temperature is cooled, so that the attachment particle removal head can be used for a long time in the exhaust duct for discharging hot gas.

What has been described above is just one embodiment for carrying out the attached particle removal device attached to the incineration melting furnace pipe according to the present invention, the present invention is not limited to the above-described embodiment, it is claimed in the claims As will be apparent to those skilled in the art to which the invention pertains without departing from the gist of the invention, the technical spirit of the present invention may be changed to the extent that various modifications can be made.

Claims (5)

An incineration melting furnace having a dust collecting chamber for collecting slag that has been melted and dropped into cooling water, and an exhaust duct installed in the dust collecting chamber to discharge combustion gas to the outside, wherein the pressure difference between the exhaust duct inlet and the outlet side is provided at one side of the exhaust duct. An incineration melting furnace characterized in that, if it is increased above the set value, a means is provided for removing adherent particles attached to the inner surface of the exhaust duct even without stopping the operation of the incineration furnace. The method of claim 1, The attached particle removing means attached to the exhaust duct may include an attached particle removing head having a plurality of blades positioned inside one side of the exhaust duct, and a table for rotatably and linearly supporting the drive shaft of the attached particle removing head. And a carrier mounted on the table so as to linearly reciprocate by a rack, pinion and a first motor for rotating the pinion in a forward and reverse direction, and linearly reciprocating a drive shaft of the attachment particle removal head, and mounted on the carrier. A pair of bevel gears and a second motor for rotating the drive shaft of the attachment particle removal head, a differential pressure gauge for measuring the pressure difference between the inlet and the outlet side of the exhaust duct, and the differential pressure measured by the differential pressure gauge. An incineration smelting furnace comprising a control unit for controlling the driving of the second motor. The method of claim 1, The attached particle removing means attached to the exhaust duct includes: an attached particle removing head having a plurality of blades formed on a front surface thereof and partitioned into first and second spaces whose upper and lower sides are connected by a partition wall, and a rear surface of the attached particle removing head; A cooling water supply pipe coaxially installed at one end of which is in communication with the first space, a cooling water recovery pipe whose one end is in communication with the second space, and a table for rotatably and linearly supporting the cooling water recovery pipe; The rack and pinion and the first motor for rotating the pinion in the forward and reverse directions are installed on the table so as to be linearly reciprocated and mounted on the carrier for linear reciprocating movement of the coolant recovery pipe of the attachment particle removal head. A pair of bevel gears and a second motor for rotating the coolant recovery pipe of the attachment particle removal head, the coolant supply pipe and the cold A rotary joint bearing the other end of the water recovery pipe therein and having a cooling water discharge port configured to discharge the cooling water recovered through the cooling water recovery pipe at an upper portion thereof, and a cooling water supply unit configured to supply cooling water to the cooling water supply pipe at the rear thereof; And a control unit for controlling a pressure difference between the inlet and the outlet of the exhaust duct, and a control unit for controlling the driving of the first and second motors according to the differential pressure measured by the differential pressure gauge. The method of claim 2 or 3, And a handle for manually rotating and linearly reciprocating the attachment particle removal head on the rotation shafts of the first motor and the second motor, respectively. The method of claim 2 or 3, Incineration melting furnace, characterized in that a pair of stoppers are provided on both sides of the table to limit the moving range of the carrier.