JP5229600B1 - Exhaust gas purification device - Google Patents

Abstract

It is an object of the present invention to provide an exhaust gas purification apparatus that is miniaturized to a level that can be transported and that has a significantly reduced time for assembly and installation work on site, and that can minimize the construction period. And
The exhaust gas purification apparatus 1 of the present invention includes a combustion chamber 10 provided with a burner, and first and second heat storage chambers 11 arranged in parallel with one end connected to the side surface of the combustion chamber and spaced apart from each other. 12, a heat storage body arranged inside each heat storage chamber, a first connection duct 15 connected to the other end of the first heat storage chamber 11, and the other end of the second heat storage chamber 12. Connected to the second connection duct 16, the supply duct 17 for supplying the untreated gas, the discharge duct 18 for discharging the treated gas, the first connection duct, the second connection duct, the supply duct and the discharge duct, A first state in which the first connection duct is in communication with the supply duct and the second connection duct is in communication with the exhaust duct; and a second state in which the second connection duct is in communication with the supply duct and the first connection duct is in communication with the exhaust duct. Switching valve 2 capable of selectively switching between two states If a cooling fan 21 for flowing a gas into the space between the first and second regenerator, characterized in that it comprises.

Description

  The present invention relates to an exhaust gas purification device, and more particularly, to a regenerative exhaust gas purification device that performs a purification process by efficiently burning exhaust gas using a heat storage body.

  Conventionally, volatile organic compounds generated from adhesive industry facilities for laminate packaging, adhesive tape, etc., printing industry facilities for gravure printing and offset printing, painting facilities, chemical factories, electronics / ceramics industry facilities, factory cleaning facilities, etc. In order to purify exhaust gas containing flammable harmful components such as (VOC: Volatile Organic Compounds), for example, an exhaust gas purification device described in Patent Document 1 is used.

An exhaust gas purifying device described in Patent Document 1 includes a plurality of heat storage chambers each having an air supply port to which an air supply valve is attached and an exhaust port to which an exhaust valve is attached, in which a heat storage body is disposed, and a heat storage chamber And a combustion chamber that is disposed above the heat storage chamber and communicates with a burner at the top.
In this exhaust gas purification device, by selectively opening and closing the air supply valve and the exhaust valve of each heat storage chamber, each heat storage chamber is switched to the air supply side heat storage chamber and the exhaust side heat storage chamber to perform exhaust gas purification processing. Yes.

Japanese Patent Laid-Open No. 2004-77017

The exhaust gas purifying apparatus described in Patent Document 1 is large in size and is not easy to install and assemble on site.
In addition, since the burner is arranged at the upper part of the combustion chamber provided above the heat storage chamber, the installation position of the burner becomes a high place, and an electric meter provided for controlling ignition and extinguishing of the burner The wiring work for the equipment was complicated.

  On the other hand, in factories and facilities where exhaust gas purification systems are introduced, there is a demand for minimizing the shutdown of equipment during the construction period, so it is downsized so that it can be transported and is required for on-site assembly and installation work. There has been a demand for an exhaust gas purifying apparatus whose time is significantly shortened.

  An object of the present invention is to provide an exhaust gas purifying apparatus that is miniaturized to such a degree that it can be transported, that is greatly reduced in time for assembly and installation work on site, and that can minimize the construction period. It is in.

According to the present invention,
An exhaust gas purification apparatus for purifying exhaust gas containing a combustible component,
A combustion chamber provided with a burner;
First and second heat storage chambers having one side end connected to the side surface of the combustion chamber and spaced apart from each other;
A heat storage body disposed inside each of the heat storage chambers;
A first connection duct connected to the other end of the first heat storage chamber;
A second connection duct connected to the other end of the second heat storage chamber;
A supply duct for supplying untreated gas;
An exhaust duct for discharging the treated gas;
The first connection duct, the second connection duct, the supply duct, and the discharge duct are connected, the first connection duct communicates with the supply duct, and the second connection duct communicates with the exhaust duct. A switching valve capable of selectively switching between a first state and a second state in which the second connection duct communicates with the supply duct and the first connection duct communicates with the exhaust duct;
A cooling fan for flowing gas into the space between the first and second heat storage chambers,
There is provided an exhaust gas purification apparatus characterized by this.

  According to such a configuration, since the heat storage chamber can be efficiently cooled, the heat insulating material can be thinned, and the apparatus can be downsized.

According to another preferred embodiment of the invention,
The first and second heat storage chambers are arranged so as to be adjacent in the horizontal direction,
On the upper surface of the heat storage combustion section composed of the combustion chamber and the first and second heat storage chambers, an upper surface cover disposed away from the upper surface is disposed,
On both side surfaces facing the direction perpendicular to the line connecting the one side end and the other end side of the heat storage chamber of the heat storage combustion section, side covers disposed away from the both side surfaces are disposed,
The cooling fan is configured to flow gas between the upper surface of the heat storage combustion unit and the upper surface cover and between each side surface of the heat storage combustion unit and the side cover.

  According to such a configuration, since the heat storage chamber can be cooled more efficiently, the heat insulating material can be thinned, and downsizing of the apparatus can be achieved.

According to another preferred embodiment of the invention,
A first unit having a control panel at a position opposite to a side surface to which the first and second heat storage chambers of the combustion chamber are connected;
A second unit having an untreated gas fan for delivering the untreated gas is provided at a position opposite to the side surface connected to the combustion chamber of the first and second heat storage chambers.

According to another preferred embodiment of the invention,
The first unit is arranged to form a working space between the control panel and the combustion chamber,
Below the control panel is provided a fuel supply unit for supplying fuel to the burner of the combustion chamber,
The cooling fan is configured to allow gas to flow into the working space.

According to another preferred embodiment of the invention,
The heat storage elements disposed in the respective heat storage chambers are disposed so as to be inclined so that the combustion chamber side is positioned upward in the respective heat storage chambers.

According to another preferred embodiment of the invention,
The inclination angle of the heat storage body is 1 to 30 degrees with respect to the horizontal plane.

According to another preferred embodiment of the invention,
The heat storage body is supported in an inclined state by a heat storage body support portion having an inclined surface at the top,
The heat storage body support portion is formed of an inorganic material having fire resistance.

According to another preferred embodiment of the invention,
One end is connected to the combustion chamber, the other end is connected to the supply duct, and has an on-off valve, and includes a bypass duct that directly connects the combustion chamber and the supply duct,
The bypass duct is disposed below the heat storage combustion section.

According to another preferred embodiment of the invention,
The heat storage combustion section has a plate material of 3.0 mm to 10.0 mm and a reinforcing member that reinforces the plate material,
The reinforcing member is composed of one or more types of members selected from square steel pipe, H-shaped steel, I-shaped steel, groove-shaped steel, angle-shaped steel, light groove-shaped steel, lip groove-shaped steel and hat-shaped steel. And
The first unit is supported by a first unit support member provided on an upper surface portion of the first unit and joined to the reinforcing member;
The first unit support member is of one or more types selected from square steel pipe, H-shaped steel, I-shaped steel, groove-shaped steel, angle-shaped steel, light-grooved steel, lip-grooved steel and hat-shaped steel. Composed of members,
The second unit is supported by a second unit support member provided on an upper surface portion of the second unit and joined to the reinforcing member,
The second unit support member is of one or more types selected from square steel pipes, H-shaped steels, I-shaped steels, channel-shaped steels, angle steels, light-grooved steels, lip-grooved steels, and hat-shaped steels. It is comprised by the member.

According to another preferred embodiment of the invention,
The heat storage body includes a plurality of ceramic members disposed adjacent to each other,
The ceramic member has a rectangular parallelepiped shape, and includes a plurality of parallel through holes extending from one end to the other end of the ceramic member,
The ceramic member is oriented such that the through hole extends from the combustion chamber toward the connection duct;
The ceramic member has a cross section perpendicular to the through hole forming direction, a rectangle having a side length of 100 mm to 300 mm, and a cross section in the through hole forming direction is a rectangle having a side length of 100 mm to 500 mm. It is said that.

According to another preferred embodiment of the invention,
The heat storage body is configured by laminating a plurality of layers of heat storage layers formed by arranging and arranging ceramic members two-dimensionally in a vertical direction,
The said thermal storage combustion part can use the thermal storage body selected from the multiple types of thermal storage body which consists of a thermal storage layer of a different step number.

According to another preferred embodiment of the invention,
A gas detector is provided in the working space.

According to another preferred embodiment of the invention,
A heat insulating material having a thickness of 50 to 225 mm is provided on the inner surface of the heat storage chamber.

  ADVANTAGE OF THE INVENTION According to this invention, the exhaust gas purification apparatus which can be miniaturized to the extent that it can be transported, and is greatly shortened in the time required for assembly and installation work on site can be minimized. .

It is a perspective view which shows the external appearance of the heat storage type exhaust gas purification apparatus of preferable embodiment of this invention. It is a perspective view of the state which removed each cover member which covers the upper surface and side surface of the thermal storage type exhaust gas purification apparatus of FIG. It is a figure for demonstrating the structure of the thermal storage type exhaust gas purification apparatus of FIG. 1, (a) is the schematic from the front for showing an internal structure, (b) is a schematic perspective view for showing an internal structure, c) is a cross-sectional view of the device along the line A1-A1 shown in FIG. (A) is a plane sectional view for showing the combustion chamber and the heat storage chamber of the heat storage type exhaust gas purification apparatus of FIG. 1, (b) is a case of one heat storage chamber and the case of the other heat storage chamber. It is the expanded plane sectional view which shows the space provided between. It is a figure for demonstrating the flow of the untreated gas and the air for cooling in the thermal storage type exhaust gas purification apparatus of FIG. It is a figure similar to FIG. 5 explaining the flow of untreated gas and cooling air. It is a figure for demonstrating the switching valve of the thermal storage type exhaust gas purification apparatus of FIG. 1, (a) is a fragmentary sectional view along the A2-A2 line of FIG. 4, (b) is a 1st communication state. It is sectional drawing which shows the flow of untreated gas of this, and processed gas, (c) is sectional drawing which shows the flow of untreated gas and processed gas in a 2nd communication state. It is a figure for demonstrating the flow of the cooling air in the thermal storage type exhaust gas purification apparatus of FIG. 1, (a) is a front view of a thermal storage type exhaust gas purification apparatus, (b) is A3 shown to Fig.8 (a). It is sectional drawing along line -A3, (c) thru | or (e) is a figure explaining the opening-and-closing state of the ventilation port which adjusts the air quantity which flows through the heat storage type exhaust gas purification apparatus. It is a disassembled perspective view of the thermal storage type exhaust gas purification apparatus of FIG. It is a figure for demonstrating the space for cooling, (a) is a front view of the state which removed the side cover, (b) is the plane sectional drawing. (C) is sectional drawing along the A4-A4 line of Fig.10 (a). It is a figure for demonstrating the arrangement | positioning state of a thermal storage body, (a) is a plane sectional view of the thermal storage body vicinity, (b) is a longitudinal cross-sectional view of the thermal storage body vicinity, (c) is FIG. FIG. It is a front view explaining the bypass duct of the heat storage type exhaust gas purification apparatus of FIG. It is drawing which shows the relationship between a 1st unit, a 2nd unit, and a main unit. It is a figure for demonstrating that a different thermal storage body can be used, (a) is a perspective view of the modification of the thermal storage type exhaust gas purification apparatus of FIG. 1, (b) is the thermal storage type exhaust gas of FIG. It is a perspective view which shows the purification apparatus. It is a figure for demonstrating the heat insulating material of the thermal storage type exhaust gas purification apparatus of FIG. 1, (a) is a plane sectional view of a thermal storage combustion part, (b) is an enlarged view of Pb part of Fig.15 (a). (C) is an enlarged view of the Pc portion of FIG. 15 (a), (d) is an enlarged view of the Pd portion of FIG. 15 (a), and (e) is a longitudinal sectional view of the heat storage combustion section. (F) is an enlarged view of the Pf portion of FIG. 15 (e), (g) is an enlarged view of the Pg portion of FIG. 15 (e), and (h) is an enlarged view of FIG. 15 (e). It is an enlarged view of Ph part of. It is a figure for demonstrating the structure of the thermal storage type exhaust gas purification apparatus of FIG.

  Hereinafter, a heat storage type exhaust gas purification apparatus 1 according to a preferred embodiment of the present invention will be described with reference to the drawings. The heat storage type exhaust gas purification device 1 is used for processing exhaust gas such as combustion of volatile organic compounds.

  As shown in FIGS. 1 to 5, the regenerative exhaust gas purification apparatus 1 according to this embodiment includes a combustion chamber 10 provided with a burner 8 therein, and one end (in FIG. 4) on the side surface of the combustion chamber 10. And a pair of heat storage chambers 11 and 12 which are connected to each other in the horizontal direction. The respective heat storage chambers 11 and 12 are arranged in parallel in a state in which a space is formed therebetween while being separated from each other. The combustion chamber 10 and the pair of heat storage chambers 11 and 12 constitute the heat storage combustion unit 9.

  In FIG. 5, black arrows indicate gas flows when one heat storage chamber 12 is set as a supply-side heat storage chamber and the other heat storage chamber 11 is set as a discharge-side heat storage chamber. The air flow is shown. In addition, as will be described later, the heat storage type exhaust gas purification apparatus 1 of the present embodiment can switch each heat storage chamber between a supply side heat storage chamber and a supply side heat storage chamber, and the state shown in FIG. Conversely, when one heat storage chamber 12 is set on the discharge side and the other heat storage chamber 11 is set on the discharge side, the gas flows as shown in FIG.

  In each of the heat storage chambers 11 and 12, heat storage bodies 13 and 14 are provided. As shown in FIG. 10, the heat storage bodies 13 and 14 are provided between the one ends 11 b and 12 b of the heat storage chambers 11 and 12 and the other ends 11 c and 12 c.

  The heat storage type exhaust gas purification apparatus 1 includes a first connection duct 15 connected to the other end 11c of one heat storage chamber 11, a second connection duct 16 connected to the other end 12c of the other heat storage chamber 12, and an untreated A supply duct 17 that supplies gas to the heat storage chamber and a discharge duct 18 that discharges the processed gas from the heat storage chamber are provided.

  Further, as shown in FIGS. 5 to 7, the heat storage type exhaust gas purification apparatus 1 switches the heat storage chambers 11 and 12 between the supply side heat storage chamber and the supply side heat storage chamber 20. It has.

  The switching valve 20 is a four-way valve, and includes a rotatable valve body 20a, a seal member 20b, and a driving means 20c. The switching valve 20 switches the first and second communication states by rotationally driving the valve body 20a around the rotating shaft 20d.

As shown in FIG. 5, the switching valve 20 includes four connection ports extending in four directions at an angular interval of approximately 90 degrees. In each connection port, in the clockwise direction in FIG. 5, a first connection duct 15 connected to the other end 11 c of the heat storage chamber 11, a supply duct 17 for supplying untreated gas to the heat storage chamber, and a heat storage chamber 12 A second connection duct 16 connected to the other end 12c and a discharge duct 18 for discharging the treated gas from the heat storage chamber are connected.
The supply duct 17 is provided with a gas blower 19 for blowing exhaust gas that is an untreated gas.

  The switching valve 20 selectively communicates a duct connected to one connection port with one of the ducts connected to two connection ports adjacent to the connection port by rotating the valve body 20a. It is configured to be able to.

  That is, the switching valve 20 can be switched between the first communication state shown in FIG. 7B and the second communication state shown in FIG. 7C.

  Since the untreated gas is supplied to the heat storage combustion section 9 through the connection duct (15 or 16) on the side connected to the supply duct 17, it is connected to the connection duct (15 or 16) on the side connected to the supply duct 17. The stored heat storage chamber becomes the supply-side heat storage chamber.

  Since the treated gas is discharged from the heat storage combustion section 9 through the connection duct (15 or 16) on the side connected to the discharge duct 18, it is connected to the connection duct (15 or 16) on the side connected to the discharge duct 18. The stored heat storage chamber becomes the discharge side heat storage chamber.

  In the first communication state shown in FIG. 7B, the first connection duct 15 is connected to the discharge duct 18 and the second connection duct 16 is connected to the supply duct 17, so that the state shown in FIG. The heat storage chamber 11 becomes the discharge side heat storage chamber, and the heat storage chamber 12 becomes the supply side heat storage chamber.

  7C, the first connection duct 15 is connected to the supply duct 17 and the second connection duct 16 is connected to the discharge duct 18, so that the operation shown in FIG. In other words, the heat storage chamber 11 is a supply-side heat storage chamber, and the heat storage chamber 12 is a discharge-side heat storage chamber.

  As described above, the switching valve 20 has the first connection duct 15 connected to one of the supply duct 17 and the discharge duct 18, and the second connection duct 16 connected to the other of the supply duct 17 and the discharge duct 18, The two connection ducts 16 are connected to one of the supply duct 17 and the discharge duct 18 and the second connection duct 15 is connected to the other of the supply duct 17 and the discharge duct 18 so as to be switchable.

As described above, in the heat storage type exhaust gas purification apparatus 1 of the present embodiment, the heat storage chambers 11 and 12 and the combustion chamber 10 are arranged side by side, so that compared to a conventional device in which the combustion chamber is disposed on the heat storage chamber. Thus, the height dimension is reduced.
In addition, the heat storage type exhaust gas purification device 1 is configured to switch the heat storage chambers 11 and 12 to the supply side heat storage chamber and the discharge side heat storage chamber with a single switching valve 20, so that downsizing of the device is realized. The

  The heat storage type exhaust gas purification apparatus 1 includes a cooling fan 21 as shown in FIGS. 2, 4 to 6 and 8. The cooling fan 21 has cooling air in a space 22 formed between the surface (outer surface) of the housing 11 a of one heat storage chamber 11 and the surface (outer surface) of the housing 12 a of the other heat storage chamber 12. Shed.

  As shown in FIGS. 4A and 4B, the heat storage chambers 11 and 12 are arranged in parallel with one end connected to the side surface of the combustion chamber and spaced apart from each other. A space 22 is formed between the twelve cases 11a and 12a. And in this space 22, the some reinforcement member 23 comprised, for example with the square steel pipe etc. is arrange | positioned.

  The cooling fan 21 cools a portion surrounded by the casings 11a and 12a and the reinforcing member 23 in the space 22 through the space 37 described later by discharging the gas in the heat storage type exhaust gas purification device 1 to the outside of the device. Allow air to pass through.

  As shown in FIGS. 8 and 9, the cooling fan 21 is disposed on both sides in the X direction of the discharge port 84 connected to the discharge duct 18. The direction X is a direction in which the heat storage chambers 11 and 12 face each other (FIG. 9).

  A leg portion 38 is provided below the heat storage combustion portion 9 so as to form a gap with the installation surface (the ground or the like). The cooling fan 21 takes outside air into the regenerative exhaust gas purification device 1 from this gap, passes the regenerative exhaust gas purification device 1, and discharges it outside through the vent 24 b of the hood member 24.

  A hood member 24 is provided above the cooling fan 21 to prevent rain from entering the inside of the apparatus. The hood member 24 includes a roof-like hood portion 24a that prevents rain from entering the inside of the device, and air inside the device sucked by the cooling fan 21 is discharged from the vent holes 24b on both sides of the hood portion 24a to the outside of the device. Discharge.

  Since the cooling fan 21 causes cooling air to flow into the space 22 between the housings 11a and 12a of the heat storage chambers 11 and 12, the thickness of the heat insulating material 25 provided in the mutually opposing portions of the housings 11a and 12a. Can be made thinner. Thereby, further miniaturization of the heat storage type exhaust gas purification device is realized.

Since this cooling fan 21 causes cooling air to flow around the heat storage combustion unit 9 in addition to the space 22 between the casings 11a and 12a, the heat storage combustion unit 9 is cooled more efficiently, and the heat storage combustion unit It is also possible to reduce the thickness of the heat insulating material 26 provided on the inner surface of the housing 9.
In the heat storage type exhaust gas purification apparatus 1 of the present embodiment, as the heat insulating material, for example, rock wool, glass wool, ceramic wool, ceramic board, calcium silicate board, calcium silicate wool, castable cement, or the like has fire resistance. Inorganic materials are used.

  Next, a cover that is provided outside the heat storage combustion section 9 and the like and that constitutes the outer portion of the heat storage type exhaust gas purification apparatus 1 shown in FIG. 1 will be described.

  As shown in FIG. 10, the upper surface 9 a of the heat storage combustion unit 9 constituted by the combustion chamber 10 and the heat storage chambers 11, 12 and one end side 11 b of the heat storage chambers 11, 12 among the side surfaces of the heat storage combustion unit 9, 12b and the pair of side surfaces 9b and 9c facing in a direction (direction X) orthogonal to the straight line connecting the other end sides 11c and 12c are an upper surface cover 31 and a pair of side surface covers 32 and 33 that cover the heat storage combustion unit 9. Is provided. Note that side surfaces 9b and 9c and side surfaces 9d and 9e described later extend in the vertical direction.

  The side cover 32 is located on the front side (front side) of the apparatus when the apparatus is installed, and is provided with a door 32a for entering and exiting the first unit 41, a door 32b for entering and exiting the second unit 42, and the like. Yes.

Further, as shown in FIG. 8B and FIG. 10C, the upper surface cover 31 is inclined downward from the front surface (side surface cover 32) side toward the rear surface (side surface cover 33) side, Guide rainwater to the rear side of the device.
Each of the first unit 41 and the second unit 42 is provided with side covers 28 and 29 that cover the side of the apparatus 1 together with the pair of side covers 32 and 33. The side covers 28 and 29 are arranged facing the Y direction (FIG. 9).

  Reinforcing members 34 are provided on the outer surfaces of the housings 11 a and 12 a of the heat storage chambers 11 and 12, and side covers 32 and 33 are attached to the outer ends of the reinforcing members 34. As a result, spaces 35 and 36 are formed between the casings 11 a and 12 a and the side covers 32 and 33.

  As a result, the space 35 functions as a space for allowing the cooling air to pass through the portion surrounded by the casing 11a, the side cover 32, and the reinforcing member 34, and the space 36 includes the casing 12a, the side cover 33, and A portion surrounded by the reinforcing member 34 functions as a space for allowing cooling air to pass therethrough. Further, the cooling air can pass through the space 34 a in the reinforcing member 34.

Furthermore, an upper surface cover 31 is attached to an attachment portion (not shown) attached to the upper surface 9 a of the heat storage combustion unit 9 so as to be separated from the upper surface 9 a of the heat storage combustion unit 9. With such a configuration, a space 37 is formed between the upper surface 9a of the heat storage combustion unit 9 and the upper surface cover 31, and the space 37 functions as a space for allowing cooling air to pass therethrough.
In addition, the shaded part (hatched part) in FIG.

The cooling fan 21 sucks air so that the air passes through a space 37 formed between the upper surface of the heat storage combustion unit 9 and the upper surface cover 31.
The cooling fan 21 sucks air so that the air passes through spaces 35 and 36 formed between the pair of side surfaces of the heat storage combustion unit 9 and the side surface covers 32 and 33 facing the side surfaces.

  Since the space is formed below the heat storage combustion unit 9 by the legs 38, the cooling function of the cooling fan 21 can be sufficiently exhibited.

  Further, the lower ends of the side covers 32 and 33 are also arranged at positions where a gap is formed between the side covers 32 and 33. Due to this gap, the outside air is smoothly introduced into the spaces 35 and 36 formed between the casings 11a and 12a and the side covers 32 and 33 by the suction of the cooling fan 21, thereby enabling efficient cooling. As a result, it is possible to reduce the thickness of the heat insulating material 26, and further miniaturization of the heat storage type exhaust gas purification device is realized.

  As shown in FIG. 10 (b), the heat storage combustion unit 9 includes a pair of side surfaces 9d and 9e facing in a direction (Y direction) orthogonal to a direction (X direction) in which the side surfaces 9b and 9c face each other. ing. A first unit 41 having a control panel 43 is attached to the side surface 9d of the pair of side surfaces 9d and 9e on the combustion chamber 10 side. Moreover, the 2nd unit 42 which has the untreated gas fan which blows untreated gas is attached to the side surface 9e by the side of the thermal storage chambers 11 and 12 of a pair of side surface 9d, 9e.

  Hereinafter, the heat storage combustion unit 9, the first and second connection ducts 15, 16 and the like are also referred to as a main unit (heat storage combustion unit) 40.

As shown in FIGS. 2, 3, and 8 to 10, the first unit 41 is provided with a working space 44 between the control panel 43 and the combustion chamber 10. A fuel supply unit 45 that supplies fuel to the burner 8 of the combustion chamber 10 is provided below the control panel 43.
As shown in FIG. 8, the cooling fan 21 also ventilates the work space 44 by sucking the air in the work space 44. Further, a gas detector may be provided in the work space 44.

Between the work space 44 of the first unit 41 and the space 37 of the main unit 40, for example, a ventilation port 46 with a flow rate adjusting function such as a shutter type is provided. Similarly, a ventilation port 46 is provided between the space 48 of the second unit 42 and the space 37 of the main unit 40.
The ventilation port 46 includes an opening plate 46a provided with an opening 46b, an adjustment plate 46c that adjusts the opening amount of the opening 46b by sliding in the lateral direction, and an operation unit 46d for sliding the adjustment plate 46c. .

  The adjustment plate 46c is configured to be slidable to the fully closed state shown in FIG. 8C when ventilation of the first unit 41 and the second unit 42 is unnecessary. When a large amount of ventilation is required, it can be slid to the fully open state shown in FIG. 8 (e), and when partial ventilation is required, it can be slid to the intermediate state shown in FIG. 8 (d). It is configured to be able to. As described above, the shutter-type air vent 46 can adjust the ventilation amount from the first and second units 41 and 42.

  The opening degree control of the ventilation port 46 may be manual or automatic based on a control signal or the like. Further, when a gas detector is provided in the work space 44, the adjustment plate 46c may be automatically slid to be fully opened when a gas leak or the like is detected.

Next, the heat storage bodies 13 and 14 provided in the heat storage chambers 11 and 12 will be described with reference to FIG.
The heat storage bodies 13 and 14 are arrange | positioned in the heat storage chambers 11 and 12 so that it may incline upward toward the combustion chamber 10 with respect to the horizontal. The inclination angle is preferably 1 to 30 degrees with respect to the horizontal plane, and in this embodiment, it is set to 5 degrees, which is a more preferable angle.

  The heat storage bodies 13 and 14 are supported by the heat storage body support part 51 which has the inclined surface 51a in the upper part. The thermal storage support 51 is formed of an inorganic material having fire resistance such as castable cement. Below the heat storage body support member 51, a wedge-shaped grating member 52 is disposed, and the heat storage body support member 51 and the heat storage bodies 13, 14 supported on the heat storage body support member 51 are disposed in an inclined state.

  A heat insulating board material 53 is disposed below the heat storage body support portion 51. The 1st and 2nd connection ducts 15 and 16 have the connection parts 15a and 16a in which the cross section was expanded so that the part connected with the thermal storage chambers 11 and 12 may become a hopper shape. The grating member 52 is supported by a reinforcing member 54 such as a pipe laid over the hopper-like connecting portions 15a and 16a for reinforcement.

  By arranging the heat storage bodies 13 and 14 in an inclined state as described above, the heat storage bodies 13 and 14 move due to the weight of the heat storage bodies even when the untreated gas is passed through the heat storage bodies. Can be prevented.

In addition, when this angle is 1 degree or less, there exists a possibility that the thermal storage bodies 13 and 14 may move with the ventilation pressure of untreated gas.
In addition, when this angle is 30 degrees or more, the size of the entire apparatus becomes large due to factors such as an increase in the heat storage body support portion 51 that supports the inclined heat storage bodies 13 and 14, thereby reducing the size. There is a problem that hinders.

  Specifically, the heat storage bodies 13 and 14 are configured by stacking a plurality of heat storage layers in a vertical direction in a plurality of layers, in which a plurality of rectangular parallelepiped ceramic members are two-dimensionally arranged.

  The ceramic member includes a plurality of parallel through holes extending from one end to the other end. The ceramic member has a cross section orthogonal to the through hole formation direction, a rectangle having a side length of 100 mm to 300 mm, and a cross section in the through hole formation direction is a rectangle having a side length of 100 mm to 500 mm. Yes.

  The ceramic member is disposed such that the through hole is parallel to the inclined surface 51a of the heat storage body support 51 and faces from one end side to the other end side of the heat storage chamber 10 (that is, extends from the combustion chamber toward the connection duct). Has been. Moreover, the heat storage combustion part 9 can use the heat storage body selected from the multiple types of heat storage body which consists of a heat storage layer of a different step number.

  The regenerative exhaust gas purification apparatus 1 has a pre-duct 88 connected to the gas blower 19 and having a pre-filter 87 built therein. The untreated gas X4 shown in FIGS. 5 and 6 passes through the first or second connection ducts 15 and 16 via the prefilter 87, the gas blower 19, the supply duct 17, and the switching valve 20, and the regenerative combustion section 9 (combustion). It is led to the chamber 10 and the heat storage chamber 11).

  The pre-duct 88 is provided with a shut-off valve 86. An external air intake valve 85 is connected to the preduct 88. The outside air taken in from the outside air intake valve 85 is sent to the heat storage combustion unit 9 by the gas blower 19. An untreated gas supply port 89 is provided at the front end of the pre-duct 88, and an untreated gas pipe from a facility or the like to be treated is connected thereto. Further, a discharge port 84 for the processed gas is provided at the tip of the discharge duct 18.

Further, the heat storage type exhaust gas purification apparatus 1 includes a bypass duct 56 as shown in FIG. The bypass duct 56 has an adjustment opening / closing valve 57 and directly connects the combustion chamber 10 and the supply duct 17.
The bypass duct 56 functions as a so-called cold bypass duct, and guides the untreated gas directly from the supply duct 17 to the combustion chamber 10 without passing through the heat storage chambers 11 and 12. By the bypass duct 56, a rapid increase in the temperature of the combustion chamber 10 can be suppressed, and damage to various members due to the temperature increase is prevented. The untreated gas flowing in the bypass duct 56 is also blown by the gas blower 19, and the air volume is adjusted by the adjustment opening / closing valve 57. The adjustment on-off valve 57 is adjusted based on the temperature detected by the temperature detector or the like of the heat storage combustion unit 9.
Since the bypass duct 56 is provided on the lower side of the bottom surface of the heat storage combustion unit 9, it contributes to downsizing of the entire apparatus.

  The bypass duct 56 is connected to an attachment member 58 for attaching a stirring plate 59 provided in the combustion chamber 10. The attachment member 58 is made of a pipe-like member, and a plurality of conduction holes 58 a are provided inside the combustion chamber 10. The untreated gas led from the bypass duct 56 is led to the combustion chamber 10 through the conduction hole 58a.

  The heat storage combustion unit 9 has a plate material of 3.0 mm to 10.0 mm and a reinforcing member 34 provided to reinforce the plate material. The casing of the combustion chamber 10 and the casings 11a and 12a of the heat storage chambers 11 and 12 are formed of, for example, an iron plate (material is not limited to this) of 3.0 mm to 10.0 mm. The reinforcing member 34 is attached.

  The reinforcing member 34 is, for example, a square steel pipe. The reinforcing members 23 and 34 are not limited to the above, but can be selected from square steel pipes, H-shaped steels, I-shaped steels, channel-shaped steels, angle steels, light-grooved steels, lip-grooved steels, and hat-shaped steels One or a plurality of types of members are combined and formed. By selecting appropriate plate materials and reinforcing members, weight reduction and miniaturization are realized.

  As shown in FIG. 13, the first unit 41 is supported by a first unit support member 61 that is joined to the reinforcing member 34 of the main unit 40. The first unit support member 61 is a member that is provided on the upper surface portion of the first unit 41, has the same strength as the reinforcing member 34, and is joined to the upper side of the reinforcing member 34. The second unit 42 is supported by a second unit support member 62 that is joined to the reinforcing member 34 of the main unit 40. The second unit support member 62 is a member that is provided on the upper surface portion of the second unit 42 and has the same strength as the reinforcing member 34, and is joined to the upper side of the reinforcing member 34.

  The 1st and 2nd units 41 and 42 are comprised so that it can assemble | attach to each of the 1st, 2nd unit support members 61 and 62 by moving horizontally with a lift means etc. The first and second unit support members 61, 62 are one or more selected from square steel pipes, H-shaped steels, I-shaped steels, groove-shaped steels, angle-shaped steels, light-grooved steels, lip-grooved steels, and hat-shaped steels. A plurality of types of members are formed in combination. By selecting an appropriate reinforcing member, weight reduction and size reduction are realized.

  That is, the first unit support member 61 that supports the first unit 41 and the second unit support member 62 that supports the second unit 42 are joined to the reinforcing member 34 of the heat storage combustion unit 9, thereby storing the regenerative exhaust gas. The rigidity of the entire purification device 1 can be efficiently increased.

  The regenerative exhaust gas purification device 1 of the present embodiment is not divided and transported as in the conventional regenerative exhaust gas purification device, but is reduced to a size that can be transported and transported in a finished product state. It is.

  For this reason, the strength member 34 is provided in the heat storage combustion section 9 having the heaviest weight among the main unit 40, the first unit 41, and the second unit 42, and the first and second unit support members 61, 62 are provided on the strength member 34. It is joined. The first and second units 41 and 42 are supported by the first and second unit support members 61 and 62, respectively.

  As a result, when these three units are lifted through the lifting member 63 attached to the reinforcing member 34, local stress is generated in each component due to its own weight, thereby preventing a malfunction. it can. In other words, since the weight of the three units can be efficiently received by the strength member (the reinforcing member 34, the first and second unit support members 61, 62), the strength member can also be minimized, Realizes downsizing and simplification of configuration.

  As described above, the heat storage combustion section 9 can use a heat storage body selected from a plurality of types of heat storage bodies composed of heat storage layers having different numbers of stages.

In the heat storage type exhaust gas purification apparatus 1 of this embodiment, the number K3 of heat storage layers stacked in the direction D3 (FIG. 14), for example, as shown in FIG. Instead, a heat storage combustion section 9 ′ having a stage number K3 of 9 as shown in FIG. 14 (a) may be used.
14 (a) and 14 (b), K2 (the number K2 in the D2 direction provided in one heat storage chamber) is four (one dimension: 150 mm), and K1 is five. There is (one dimension: 300mm).

  A plurality of heat storage combustion sections (for example, heat storage combustion sections 9 and 9 ') having different heat storage layer stages K3 are prepared as replacement units, and an appropriate heat storage combustion section is selected and used according to the use situation. Thus, it is possible to provide a heat storage type exhaust gas purifying apparatus having an appropriate processing capacity adapted to the processing air volume of the untreated gas.

  When the heat accumulator is changed from FIG. 9B to FIG. 9A, the size of the combustion chamber and the housing of the heat accumulator is naturally changed. Only the 1 connection duct 15 ", the" second connection duct 16 ", the" gas blower 19 ", etc. are changed, and the other parts do not need to be changed as a common configuration. Therefore, a short delivery time and a low cost can be realized by increasing the common configuration.

  Moreover, the heat insulation provided in the housing | casing inner surface of the thermal storage combustion part 9 (combustion chamber 10, thermal storage chambers 11 and 12) by the cooling function by the cooling fan 21 and space 22, 35, 36, 37 etc. which were mentioned above. The thickness of the material can be reduced from about 250 mm required in the conventional heat storage type exhaust gas purification device to 50 to 225 mm, and the heat storage type exhaust gas purification device can be reduced in size.

In order to describe the point where the thickness of the heat insulating material can be reduced, an example of the heat insulating material of the heat storage type exhaust gas purification apparatus 1 of the present embodiment will be described with reference to FIG.
Here, as shown in FIGS. 15A to 15H, the heat storage combustion unit 9 is provided with a housing, a heat insulating material, and a reinforcing member. Inside the 4.5 mm steel plate 71 as a housing, 50 mm rock wool 72, 50 mm ceramic fiber wool 73, 25 mm ceramic fiber board 74, 40 mm calcium silicate board 75 as heat insulating materials, A castable cement 76 of 50 mm to 180 mm is provided.

  The ceramic fiber wool 73 is provided with two 50 mm layers. Since the castable cement 76 constitutes the heat storage body support portion 51 as described above, the thin portion has a thickness of 50 mm and the thick portion has a thickness of 180 mm. This apparatus 1 can also suppress the thickness of a heat insulating material to 125 mm-175 mm. A reinforcing member 34 made of a square steel pipe 78 having a side of 100 mm and a square steel pipe 79 having a side of 75 mm is provided outside the steel plate 71.

  Further, the heat storage type exhaust gas purification device 1 includes a touch panel 81 and a PLC 82 as shown in FIG. In addition, the combustion blower 83, the gas blower 19, the outside air intake valve 85, the shutoff valve 86, the cold bypass adjusting on-off valve 57, and the switching valve, which are connected to and controlled by the touch panel 81 and the PLC 82, are controlled. 20, a cooling fan 21 for cooling and ventilation, temperature detectors (for example, thermocouples) 90 and 91 for detecting outlet and inlet temperatures, an ignition transformer 92, a pressure gauge 93 for compressed air, and a combustion chamber Temperature detector 94 (for example, a thermocouple), a combustion air pressure gauge 95, a control valve 96, and a flame detector 97.

  5, 6, and 16, X <b> 1 indicates a compressed air supply source (0.3 to 0.7 MPa), and X <b> 2 indicates a fuel gas supply source (LPG, LNG, butane, etc.) (5 ˜30 kPa), X3 represents an electricity (200 to 440 V) supply source, and X4 represents an untreated gas supply source.

Next, an exhaust gas purification method by the heat storage combustion exhaust gas purification device 1 will be described.
First, the switching valve 20 is controlled so that the heat storage chamber 12 becomes the supply side heat storage chamber and the heat storage chamber 11 becomes the discharge side heat storage chamber, as shown in FIG. As shown in FIGS. 5 and 7B, the exhaust gas (untreated gas) to be treated is sent to the heat storage chamber 12 through the supply duct 17 and the second connection duct 16 by the gas blower 19.

  When the untreated gas passes through the heat storage body 14 of the heat storage chamber 12, the heat storage body 14 is heated and the heat storage body 14 is cooled. The exhaust gas heated by the heat accumulator 14 and reaching the combustion chamber 10 is combusted and decomposed in the combustion chamber 10.

  The treated gas, which is a gas after combustion, passes through the heat storage body 13 of the heat storage chamber 11. At this time, the treated gas is cooled by the heat storage body 13 and the heat storage body 13 is heated. The cooled treated gas passes through the first connection duct 15 and reaches the discharge duct 18.

  When the operation is continued in this state, the temperature of the heat storage body 14 of one heat storage chamber 12 decreases, and the temperature of the heat storage body 13 of the other heat storage chamber 11 increases. After a predetermined time has elapsed, the switching valve 20 is switched from the state shown in FIG. 7B to the state shown in FIG. By this operation, as shown in FIG. 6, the gas flow direction is reversed, so that the heat storage chamber 12 becomes the discharge side heat storage chamber and the heat storage chamber 11 becomes the supply side heat storage chamber.

  As a result, the exhaust gas to be treated is heated by the high-temperature heat storage body 13 before being introduced into the combustion chamber 10. The heated exhaust gas is processed in the combustion chamber 10, cooled by the heat storage body 14, and exhausted.

  After a certain time has elapsed, the switching valve 20 is switched from the state shown in FIG. 7C to FIG. 7B. By this operation, the heat storage chamber 12 is switched to the supply side heat storage chamber, and the heat storage chamber 11 is switched to the discharge side heat storage chamber. By repeating the above operation at regular intervals, the operation is continued, whereby an efficient combustion process using exhaust heat is realized.

The heat storage type exhaust gas purifying apparatus 1 of the present embodiment is downsized to the extent that it can be transported.
Specifically, the maximum width can be set to 2500 to 3000 mm, the maximum height can be set to 2500 to 3180 mm, and the maximum length can be set to 4000 to 9200 mm so as to conform to transportation restrictions by law and the like.

This size is an example in the case of considering a transport vehicle in Japan, and is not limited to this.
In other words, this dimension may be changed in countries with different transport restrictions. In this way, the size can be reduced to such a level that it can be transported, and the assembly and installation work at the site can be greatly reduced, thereby reducing the installation cost. In addition, since wiring in the apparatus can be performed before transportation, on-site wiring work can be minimized. In addition, the construction period can be minimized, and the stop of the production line at the delivery destination can be minimized.

Claims (13)

An exhaust gas purification apparatus for purifying exhaust gas containing a combustible component,
A combustion chamber provided with a burner;
First and second heat storage chambers having one side end connected to the side surface of the combustion chamber and spaced apart from each other;
A heat storage body disposed inside each of the heat storage chambers;
A first connection duct connected to the other end of the first heat storage chamber;
A second connection duct connected to the other end of the second heat storage chamber;
A supply duct for supplying untreated gas;
An exhaust duct for discharging the treated gas;
The first connection duct, the second connection duct, the supply duct, and the discharge duct are connected, the first connection duct communicates with the supply duct, and the second connection duct communicates with the exhaust duct. A switching valve capable of selectively switching between a first state and a second state in which the second connection duct communicates with the supply duct and the first connection duct communicates with the exhaust duct;
A cooling fan for flowing gas into the space between the first and second heat storage chambers,
An exhaust gas purification apparatus characterized by that. The first and second heat storage chambers are arranged so as to be adjacent in the horizontal direction,
On the upper surface of the heat storage combustion section composed of the combustion chamber and the first and second heat storage chambers, an upper surface cover disposed away from the upper surface is disposed,
On both side surfaces facing the direction perpendicular to the line connecting the one side end and the other end side of the heat storage chamber of the heat storage combustion section, side covers disposed away from the both side surfaces are disposed,
The cooling fan is configured to flow gas between the upper surface of the heat storage combustion unit and the upper surface cover, and between each side surface of the heat storage combustion unit and the side cover,
The exhaust gas purification apparatus according to claim 1. A first unit having a control panel at a position opposite to a side surface to which the first and second heat storage chambers of the combustion chamber are connected;
A second unit having an untreated gas fan for delivering the untreated gas to a position opposite to a side surface connected to the combustion chamber of the first and second heat storage chambers;
The exhaust gas purification apparatus according to claim 2. The first unit is arranged to form a working space between the control panel and the combustion chamber,
Below the control panel is provided a fuel supply unit for supplying fuel to the burner of the combustion chamber,
The cooling fan is configured to allow gas to flow into the working space.
The exhaust gas purification device according to claim 3. The heat storage elements arranged in each of the heat storage chambers are arranged so as to be inclined so that the combustion chamber side is positioned upward in each of the heat storage chambers.
The exhaust gas purification apparatus according to claim 4. The inclination angle of the heat storage body is 1 to 30 degrees with respect to a horizontal plane.
The exhaust gas purification apparatus according to claim 5. The heat storage body is supported in an inclined state by a heat storage body support portion having an inclined surface at the top,
The heat storage body support portion is formed of an inorganic material having fire resistance,
The exhaust gas purification apparatus according to claim 6. One end is connected to the combustion chamber, the other end is connected to the supply duct, and has an on-off valve, and includes a bypass duct that directly connects the combustion chamber and the supply duct,
The bypass duct is disposed below the heat storage combustion unit,
The exhaust gas purification apparatus according to claim 7. The heat storage combustion section has a plate material of 3.0 mm to 10.0 mm and a reinforcing member that reinforces the plate material,
The reinforcing member is composed of one or more types of members selected from square steel pipe, H-shaped steel, I-shaped steel, groove-shaped steel, angle-shaped steel, light groove-shaped steel, lip groove-shaped steel and hat-shaped steel. And
The first unit is supported by a first unit support member provided on an upper surface portion of the first unit and joined to the reinforcing member;
The first unit support member is of one or more types selected from square steel pipe, H-shaped steel, I-shaped steel, groove-shaped steel, angle-shaped steel, light-grooved steel, lip-grooved steel and hat-shaped steel. Composed of members,
The second unit is supported by a second unit support member provided on an upper surface portion of the second unit and joined to the reinforcing member,
The second unit support member is of one or more types selected from square steel pipes, H-shaped steels, I-shaped steels, channel-shaped steels, angle steels, light-grooved steels, lip-grooved steels, and hat-shaped steels. Composed of members,
The exhaust gas purification apparatus according to claim 8. The heat storage body includes a plurality of ceramic members disposed adjacent to each other,
The ceramic member has a rectangular parallelepiped shape, and includes a plurality of parallel through holes extending from one end to the other end of the ceramic member,
The ceramic member is oriented such that the through hole extends from the combustion chamber toward the connection duct;
The ceramic member has a cross section perpendicular to the through hole forming direction, a rectangle having a side length of 100 mm to 300 mm, and a cross section in the through hole forming direction is a rectangle having a side length of 100 mm to 500 mm. And
The exhaust gas purification apparatus according to claim 9. The heat storage body is configured by laminating a plurality of layers of heat storage layers formed by arranging and arranging ceramic members two-dimensionally in a vertical direction,
The heat storage combustion section can use a heat storage body selected from a plurality of types of heat storage bodies composed of heat storage layers of different stages.
The exhaust gas purification apparatus according to claim 10. A gas detector is provided in the working space.
The exhaust gas purification apparatus according to claim 11. A heat insulating material having a thickness of 50 to 225 mm is provided on the inner surface of the heat storage chamber.
The exhaust gas purifying apparatus according to claim 3 or 12.

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