JP7391011B2 - Dust collection system, heat storage system - Google Patents

Description

The present invention relates to a dust collection system and a heat storage system used in furnace equipment such as garbage incinerators and steelmaking furnaces.

BACKGROUND ART Dust collectors that remove dust from incinerator exhaust gas, etc. are known. The dust collector described in Patent Document 1 uses a filter section to collect dust contained in dust-containing air flowing from a dust-containing air introduction chamber side to a purified air chamber side within a housing, and then using the filter section to collect dust particles in an incinerator or crusher. This is a device that purifies dust-containing air supplied from equipment. This device can clean the dust collected and attached to the filter by blowing it off from the purified air chamber through the filter and into the dust-containing air introduction chamber using the compressed air jet. It is configured so that it can be done.

Japanese Patent Application Publication No. 2007-175622

When municipal waste is incinerated, the combustion exhaust gas generated at that time contains harmful substances such as hydrogen chloride and sulfur oxides. In order to neutralize and remove these substances, alkaline chemicals such as slaked lime and sodium hydroxide are added to the combustion exhaust gas. In this case, the neutralization product produced by the neutralization will be contained in the combustion exhaust gas. When the combustion exhaust gas in this state is introduced into the dust collector, neutralized products adhere to the surface of the filter of the dust collector and the inner surface of the casing. It also adheres to the flue gas flow path from the furnace to the dust collector.

Some neutralization products have deliquescent properties. Therefore, when the temperature of the dust collector decreases, the neutralized product may deliquesce due to water vapor contained in the combustion exhaust gas. When the neutralization product adhering to the surface of the filter deliquesces, the filter may become clogged and the performance of the dust collector may deteriorate. Furthermore, the neutralization products adhering to the flow path may promote corrosion of piping.
Therefore, when the temperature of the dust collector or piping drops, it is necessary to heat the dust collector or piping with a heater to maintain the temperature at a high temperature in order to prevent the neutralized product from deliquescing.

An object of the present invention is to provide a dust collection system or a heat storage system that can appropriately heat parts that require heat, such as dust collectors and piping, by using the heat of combustion exhaust gas from furnace equipment.

As a result of intensive study on the above-mentioned problem, the present inventor discovered that by storing the heat of the dust-containing air discharged from the furnace in a heat storage device, the heat can be appropriately dissipated in places where heat is required, such as the dust collector and piping. The invention has been completed.
That is, the present invention provides the following dust collection system and heat storage system.

The dust collection system of the present invention for solving the above problems includes: a casing, an introduction part that introduces dust-containing air containing dust from a furnace into the inside of the casing, and a filter that collects the dust. A dust collector includes a discharge part that discharges air from the inside of the casing, and a wall member that partitions the inside and outside of the casing, and stores heat of dust-containing air containing dust from the furnace. It is characterized by comprising a heat storage device.
According to this dust collection system, since it is equipped with a heat storage device that stores the heat of the dust-laden air containing dust from the furnace, the stored heat can be used to heat the dust collector and other equipment as necessary. becomes possible.

Furthermore, one embodiment of the dust collection system of the present invention is characterized in that the heat storage device is a heat storage section disposed near the wall member.
According to this feature, since the heat storage device is provided as a heat storage section in a part of the dust collector, the heat radiated from the heat storage device can be efficiently supplied to the dust collector.

Further, in an embodiment of the dust collection system of the present invention, the heat storage section absorbs and stores heat flowing from the wall member to the outside of the casing when the wall member has a predetermined temperature or higher, and It is characterized by radiating heat and heating the wall member when the temperature is lower than that.
According to this feature, the heat dissipation from the heat storage section is performed when the temperature of the wall member of the dust collector is lower than a predetermined temperature, so that the stored heat can be used when it is necessary to heat the dust collector.

Further, in an embodiment of the dust collection system of the present invention, the heat storage section absorbs heat flowing out from the wall member to the outside of the casing when the introduction section introduces dust-containing air into the casing. The dust-containing air is stored therein, and the heat is radiated to heat the wall member when the introduction section is not introducing dust-containing air into the interior of the casing.
According to this feature, when the furnace equipment is in operation and the dust-containing air discharged from the furnace is supplied to the dust collector, it accumulates heat, and when the furnace equipment stops operating, it heats the wall members. It is possible to prevent the temperature of the dust collector from decreasing and to suppress the deliquescence of the neutralization product adhering to the surface of the filter, etc.

Furthermore, as an embodiment of the dust collection system of the present invention, the housing has a first chamber and a second chamber through which air can move through the filter, and the introduction part collects dust into the first chamber. The exhaust part discharges the air from the second chamber, and the wall member partitions the inside of the first chamber and the outside of the casing, and is located vertically below the filter. The first wall member is provided, and the heat storage section is characterized in that the heat storage section includes a first heat storage section that heats the first wall member.
According to this feature, since the heat storage section is provided in the first wall member located vertically below the filter, the filter can be efficiently heated when the heat storage section radiates heat. Moreover, since the heat storage portion of the first wall member heats the side of the filter where dust containing the neutralization product accumulates, deliquescence of the neutralization product can be effectively suppressed.

Furthermore, as an embodiment of the dust collection system of the present invention, the housing has a first chamber and a second chamber through which air can move through the filter, and the introduction part collects dust into the first chamber. The exhaust section discharges the air from the second chamber, the wall member includes a second wall member that partitions the inside of the second chamber and the outside of the casing, and the heat storage section includes: It is characterized by comprising a second heat storage section that heats the second wall member.
According to this feature, since the heat storage section is provided in the second wall member of the second chamber on the discharge section side of the filter, it is possible to effectively suppress deliquescence of fine neutralized products that have passed through the filter.

Furthermore, one embodiment of the dust collection system of the present invention is characterized in that it further includes a heater that heats the wall member.
According to this feature, even when there is a shortage of heat stored in the heat storage device, it is possible to supply heat using the heater and appropriately heat locations that require heat, such as the dust collector and piping.

Furthermore, one embodiment of the dust collection system of the present invention is characterized in that the heater performs heating when the temperature of the dust collector is lower than a predetermined temperature.
According to this feature, even when the heat stored in the heat storage device is insufficient, the temperature of the dust collector can be maintained appropriately.

Further, in one embodiment of the dust collection system of the present invention, the heater performs heating when the temperature of the dust collector is lower than a predetermined temperature and the dust collector is activated after it has stopped for a longer time than a predetermined time. It is characterized by
According to this feature, the heater is activated when the dust collector is stopped for a predetermined period of time and the temperature drops to the set temperature, so that the operation of the heater can be suppressed to the necessary minimum.

Furthermore, one embodiment of the dust collection system of the present invention is characterized in that the heat storage device includes a chemical heat storage material.
According to this feature, since the heat storage device stores heat using the chemical heat storage material, it becomes possible to radiate heat at a location and time when heating is required.

Furthermore, one embodiment of the dust collection system of the present invention is characterized in that it further includes a water supply section that supplies water or steam to the heat storage device.
As the chemical heat storage material, it is possible to use a chemical heat storage material that releases heat by supplying water or water vapor, such as calcium oxide (CaO) and water vapor. According to the above feature, since the heat storage device is provided with a water supply section that supplies water or steam, it is possible to radiate heat from the chemical heat storage material as necessary.

The heat storage system of the present invention to solve the above problems includes a heat storage device that stores heat in dust-containing air containing dust from a furnace, and a heat storage device that removes dust from the dust-containing air before the dust-containing air flows into the heat storage device. It is characterized by being equipped with a dust remover.
By making the path of dust-containing air finer, it is possible to improve the heat exchange efficiency between dust-containing air and the heat storage material. On the other hand, the dust-containing air contains a large amount of dust, and if the passage of the dust-containing air is made finer, there is a risk that the passage will be blocked by the dust. According to the above feature, since the dust is removed from the dust-containing air before the dust-containing air flows into the heat storage device, blockage due to dust can be suppressed.
Furthermore, when dust-containing air is allowed to flow into the heat storage device, problems such as corrosion of the heat storage device arise due to deliquescent neutralization products contained in the dust. However, according to the above feature, the dust is removed from the dust-containing air by the dust remover before the dust-containing air flows into the heat storage device, so the amount of deliquescent neutralization products contained in the dust is reduced. Therefore, corrosion of the heat storage device can be suppressed.

Furthermore, one embodiment of the heat storage system of the present invention is characterized in that the dust remover removes dust when the temperature of the dust-containing air is 500° C. or higher.
Harmful substances such as dioxins are generated by the reaction between dust and gas components in dust-containing air, and are generated when dust-containing air is cooled to 300 to 500°C. According to the above feature, since dust is removed from dust-containing air at a temperature of 500°C or higher, the generation of harmful substances such as dioxins is suppressed even if the temperature of the air after dust removal is lowered by the heat storage device. .

Furthermore, one embodiment of the heat storage system of the present invention is characterized in that it includes a sub-flow path branching from the main flow path through which dust-containing air passes, and the heat storage device is disposed in the sub-flow path.
According to this feature, since the heat storage device is placed in the sub-channel, it is possible to operate the furnace equipment using the main channel and replace the heat storage device installed in the sub-channel as appropriate. be effective.

Furthermore, an embodiment of the heat storage system of the present invention is characterized in that the heat storage device includes a chemical heat storage material.
According to this feature, heat can be radiated by an exothermic reaction when necessary, so it can be used to store thermal energy, as a heat source for agricultural greenhouses, as a heat source for agricultural hot water sterilization, and as a heat source for bathing in times of disaster. It can also be used as a heat source for things other than furnace equipment.

A heat storage device of the present invention for solving the above problems is a heat storage device having a chemical heat storage material, and is characterized in that it is detachable from the heat storage system.
According to this heat storage device, the heat of the dust-containing air discharged from the furnace can be stored in the heat storage device, and not only can it be radiated appropriately at places that require heat such as the dust collector and piping, but it can also be taken out of the furnace equipment and used as a heat source. It is also possible to dissipate heat where it is needed.

The furnace equipment of the present invention for solving the above problems is characterized by being equipped with the above-described dust collection system or the above-described heat storage system.
According to this furnace equipment, it is possible to appropriately heat parts that require heat, such as the dust collector and piping, by using the heat of the combustion exhaust gas of the furnace equipment, and the dust collector and piping can be heated with a heater. energy can be reduced.

A dust collection system of the present invention for solving the above problems is characterized by comprising a dust collector to which heat generated from the heat storage device of the heat storage system is supplied.
According to this dust collection system, since it is equipped with a heat storage device that stores the heat of the dust-laden air containing dust from the furnace, the stored heat can be used to heat the dust collector and other equipment as necessary. becomes possible. In addition, before the dust-laden air flows into the heat storage device, the dust is removed from the dust-laden air by a dust remover, which reduces the amount of deliquescent neutralization products contained in the dust, which leads to corrosion of the heat storage device. etc. can be suppressed.

According to the present invention, it is an object of the present invention to provide a furnace equipment that can appropriately heat parts that require heat, such as a dust collector and piping, by using the heat of combustion exhaust gas in the furnace equipment.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing which shows the structure of the furnace equipment of the 1st embodiment of this invention. FIG. 2 is a schematic explanatory diagram showing the configuration of a furnace equipment according to a second embodiment of the present invention. It is a schematic explanatory drawing which shows the structure of the furnace equipment of the 3rd embodiment of this invention.

The furnace equipment of the present invention includes a furnace that discharges dust-containing air and a heat storage device that stores heat of the dust-containing air. Here, the furnace equipment is not particularly limited as long as it is a furnace that discharges dust-containing air. Furnaces that discharge dust-containing air include, for example, incinerators such as garbage incinerators and crematoriums, firing furnaces such as kilns and rotary kilns, smelting furnaces such as steelmaking furnaces and blast furnaces, fireplaces such as hearths, stoves, and ovens, Examples include boilers that are the power source for steamships and steam locomotives. Since a steelmaking furnace frequently repeats operation and shutdown, the temperature of dust collectors, piping, etc. can be easily lowered, so that the effects of the furnace equipment of the present invention can be further exhibited.

Further, the dust collection system of the present invention includes a dust collector for removing dust from dust-containing air containing dust from the furnace, and a heat storage device for storing heat of the dust-containing air containing dust from the furnace. It is characterized by:

Further, the heat storage system of the present invention includes a heat storage device that stores heat in dust-containing air including dust from a furnace, and a dust remover that removes dust from the dust-containing air before the dust-containing air flows into the heat storage device. It is characterized by this.

Hereinafter, embodiments of the furnace equipment, dust collection system, and heat storage system according to the present invention will be described in detail with reference to the drawings. Note that the description of the embodiments is merely an example for explaining the furnace equipment, dust collection system, and heat storage system according to the present invention, and the present invention is not limited thereto.

[First embodiment]
FIG. 1 is a schematic explanatory diagram showing the structure of a furnace equipment 200 in a first embodiment of the present invention. The furnace equipment 200 includes a dust collector 206, a heat storage device 203, and a dust remover 202. In the present invention, a system including the dust collector 206 and the heat storage device 203 is referred to as a "dust collection system", and the heat storage device 203 and the dust remover 202 are referred to as a "dust collection system". This system is called a "thermal storage system."

As shown in FIG. 1, the furnace equipment 200 includes a furnace 201 and a dust collector 206, and the dust-containing air G discharged from the furnace 201 passes through the main flow path L1 and is introduced into the dust collector 206, where the dust is collected. After removal, it is released into the atmosphere. Note that the temperature of the dust-containing air G discharged from the furnace 201 is about 1000° C., and is introduced into the dust collector 206 after being lowered to 200° C. or less via a water cooling duct, a gas cooler, or the like.

Moreover, the main flow path L1 includes a branched sub-flow path L2, and a dust remover 202, a heat storage device 203, and a suction pump 207 are installed in the sub-flow path L2 from the upstream side. The end point of the sub-flow path L2 merges with the main flow path L1, and the dust-containing air G that has passed through the suction pump 207 is configured to return to the main flow path L1.

Further, in the sub flow path L2, a valve V1 is provided between the dust remover 202 and the heat storage device 203, and a valve V2 is provided between the heat storage device 203 and the suction pump 207. Distribution can be controlled.

In the main flow path L1, pressure sensors P1 and P2 are installed in a region where the dust-containing air G flows from the main flow path L1 to the sub-flow path L2, and in a region where the dust-containing air G returns from the sub-flow path L2 to the main flow path L1, respectively. The pressure of the pressure sensor P1 is set higher than the pressure of the pressure sensor P2. Thereby, the dust-containing air G can naturally flow into the sub-flow path L2 from the main flow path L1. Note that when the pressure of the pressure sensor P1 is higher than the pressure of the pressure sensor P2, the suction pump 207 is for adjusting the flow rate of the dust-containing air G in the sub flow path L2, and is an essential component. isn't it.

[Dust remover]
The dust remover 202 is for removing dust from the dust-containing air G. The dust remover 202 is not particularly limited as long as it is a solid-gas separation device that can remove dust from the dust-containing air G. For example, it can be a filtration separation device that passes through a filter or a particle-filled bed, an electric precipitator, or a separation device that uses gravity. Examples include gravity separation devices that use a cyclone, and centrifugal separation devices that use centrifugal force, such as a cyclone.
Since the dust remover 202 removes dust from the dust-containing air G, blockage caused by a large amount of dust flowing into the heat storage device 203 at the subsequent stage can be suppressed. Further, deliquescent substances are also removed, and corrosion of the heat storage device 203 can be suppressed.

It is preferable that the dust remover 202 removes dust when the temperature of the dust-containing air G is 500° C. or higher. Harmful substances such as dioxins are generated by the reaction between dust and gas components in the dust-containing air G, and are generated when the dust-containing air G is cooled to 300 to 500°C. Therefore, by removing dust from dust-containing air at a temperature of 500° C. or higher, the generation of harmful substances such as dioxins is suppressed even if the temperature of the air after dust removal is lowered by the heat storage device.
Moreover, it is preferable that the dust remover 202 removes dust when the temperature of the dust-containing air G is 800° C. or lower. When the temperature of the dust-containing air G is 800° C. or lower, the dust remover 202 does not need to have a high degree of heat resistance, so a variety of dust removers can be used.

The dust remover 202 preferably has excellent heat resistance from the viewpoint of removing dust at temperatures of 500° C. or higher. Examples of dust removers with excellent heat resistance include ceramic filters, electrostatic precipitators, and cyclones.

[Heat storage device]
The heat storage device 203 is a device having a heat storage material, and stores the heat of the dust-containing air G removed by the dust remover 202 in the heat storage material. The structure of the heat storage device 203 is not particularly limited as long as it is a structure that allows the dust-containing air G to supply heat to the heat storage material. For example, the storage container is equipped with a heat exchange tube, and the heat exchange tube is arranged in a meandering manner inside the storage container. When the dust-containing air G passes through this heat exchange tube, it supplies heat to the heat storage material inside the container via the tube wall of the heat exchange tube.

Examples of heat storage materials include chemical heat storage materials that separate into heat storage products and generated fluids during heating and perform the opposite reaction during heat release, and latent heat storage materials that undergo phase transition at a predetermined temperature and absorb or release latent heat. , sensible heat storage materials that absorb or release sensible heat, and the like.

Examples of the heat storage product and generated fluid that constitute the chemical heat storage material include calcium oxide (CaO) and water vapor (H ₂ O), calcium chloride (CaCl ₂ ) and water vapor (H ₂ O), and calcium bromide (CaBr ₂ ) and water vapor (H ₂ O), calcium iodide (CaI ₂ ) and water vapor (H ₂ O), magnesium oxide (MgO) and water vapor (H ₂ O), magnesium chloride (MgCl ₂ ) and water vapor (H ₂ O) , zinc chloride (ZnCl ₂ ) and water vapor (H ₂ O), strontium chloride (SrCl ₂ ) and ammonia (NH ₃ ), strontium bromide (SrBr ₂ ) and ammonia (NH ₃ ), calcium oxide (CaO) and carbon dioxide (CO ₂ ), magnesium oxide (MgO) and carbon dioxide (CO ₂ ). From the viewpoint of ease of handling, the chemical heat storage material preferably uses water vapor as the generated fluid.
In addition, since the heat storage device has a configuration that is particularly effective during chemical heat storage at high temperatures, the chemical heat storage material in the present invention uses calcium oxide as a heat storage product and produced fluid that can perform chemical heat storage at high temperatures. It is preferable to use a combination of steam (400 to 500 degrees) or a combination of magnesium oxide and steam (300 to 400 degrees).

Examples of latent heat storage materials include mannitol (166.5°C), transpolybutadiene (145°C), erythritol (119°C), magnesium chloride hexahydrate (117°C), etc. (The phase transition temperature is in parentheses. ).
In addition, examples of the sensible heat storage material include bricks and gravel.

The heat storage device 203 of the first embodiment includes a storage container in which calcium hydroxide is stored and a water recovery tank 204, and the storage container and the water recovery tank 204 are connected by piping. Further, a valve V3 is installed in this pipe, and can be opened and closed.

When the dust-containing air G flows into the heat storage device 203 and the heat of the dust-containing air G is supplied to calcium hydroxide, the calcium hydroxide is separated into calcium oxide and water vapor by an endothermic reaction. Then, the separated water vapor moves to the water recovery tank 204, and then, by closing the valve V3, calcium oxide and water vapor can be separated.

On the other hand, during heat radiation, water vapor is moved to the storage container side of the heat storage device 203 by opening the valve V3. As a result, calcium oxide and water vapor react to produce calcium hydroxide and generate heat.

Further, the heat storage device 203 of the first actual embodiment includes a heat exchange tube different from the heat exchange tube through which the dust-containing air G flows, and this different heat exchange tube is used to connect the heat storage device 203 and the dust collector 206. A circulation flow path L3 is formed between them. Clean air is circulated through the circulation path L3 by the blower 205.

The heat generated by the exothermic reaction between calcium oxide and water vapor heats the air flowing through the circulation path L3, and the heated air can heat the dust collector 206. Thereby, the temperature of the dust collector 206 can be maintained at a high temperature and deliquescence of the neutralized product can be suppressed. Note that this heated air can be supplied not only to the dust collector 206 but also to locations that require heating.

In the heat storage device 203 of the first embodiment, the storage container that stores the chemical heat storage material is of a cartridge type and can be removed and replaced. When removing it, by closing the valves V1 and V2, it can be replaced without stopping the operation of the furnace equipment 200. Then, the removed heat storage device 203 can be transported and used at a place where heating is required.

[Dust collector]
The dust collector 206 is a device for removing dust from the dust-containing air G from the furnace 201, and is connected to the main flow path L1. The exhaust gas from the furnace equipment is discharged into the atmosphere outside the equipment after dust is removed by a dust collector 206.

The dust collector 206 is not particularly limited as long as it is a solid-gas separation device that can remove dust from the dust-containing air G, and for example, it can be a filtration separation device that passes through a filter or a particle-filled bed, an electric dust collector, or a separation device that uses gravity. Examples include gravity separation devices and centrifugal separation devices such as cyclones that separate by centrifugal force. From the viewpoint of more reliable collection of dust, a filtration separation device using a filter is usually used.

Note that the dust-containing air G discharged from the furnace 201 of the furnace equipment 200 has a temperature of 1000°C or higher, and the dust collector 206 is arranged at a position where the temperature of the dust-containing air G is lowered to about 200°C. There are no particular restrictions on the means for lowering the temperature of the dust-containing air G discharged from the furnace 201, but examples include recovery of heat by the heat storage device 203, cooling with steam or the like, natural heat radiation, and the like. By setting the temperature of the dust-containing air G supplied to the dust collector 102 to about 200° C. or lower, preferably 100° C. or lower, the dust collector 102 is not required to have heat resistance, making it possible to use a general-purpose dust collector.
Further, the temperature of the dust collector 206 is preferably maintained at 50° C. or higher from the viewpoint of preventing dew condensation.

[Second embodiment]
The furnace equipment 300 of the second actual embodiment includes a dust remover 202 and a heat storage device 203 in the main flow path L1 connecting the furnace 201 and the dust collector 206. Note that the functions of the water recovery tank 204 and the valve V3 are the same as those in the first embodiment, so a description thereof will be omitted.

In the furnace equipment 300 of the second embodiment, when the temperature of the dust-containing air G decreases, the heat storage device 203 warms the dust-containing air G to maintain the temperature of the dust collector 206 at a high temperature. According to this furnace equipment 300, since the dust-containing air G is directly heated by the heat storage device 203 and the dust collector 206 is heated, it is possible to effectively utilize the stored heat with less heat exchange.

[Third embodiment]
FIG. 3 shows a third embodiment. In a third embodiment, the function of the heat storage device is a dust collection system installed in a dust collector as a heat storage part. By providing the heat storage device as a heat storage section in the dust collector, heat radiated from the heat storage section can be efficiently supplied to the dust collector.

Further, a detailed explanation will be given using the drawings. In the third embodiment, a dust collector (dust collection system) 100 shown in FIG. 3 will be described. In the following description, the left-right direction in FIG. 3 is the left-right direction 99 of the dust collector 100. The vertical direction in FIG. 3 is the vertical direction 97 of the dust collector 100. The direction perpendicular to the paper surface of FIG. 3 is the front-rear direction of the dust collector 100, with the front side of the paper surface being the front, and the back side of the paper surface being the rear direction. The vertical direction 97 is an example of the vertical direction.

The dust collector 100 includes a casing 1 whose interior is partitioned into a dust collection chamber (first chamber) 2 and a clean room (second chamber) 3 by a partition wall 4, and a casing 1 provided on the partition wall 4. A filter mechanism F that collects dust contained in the dust-containing air G flowing from the dust collection chamber 2 side to the clean room 3 side, an air compressor 6, a header pipe 13, a diaphragm valve 14, an injector pipe 11, and an injection It includes a mechanism J, a heater 25, and heat storage materials 41, 42a, 42b, 43a, 43b, 45, and 46. The feature of the dust collector 100 of the third embodiment is that the dust collector 100 includes a heat storage section. For example, the lower right heat storage section 45 absorbs and stores heat flowing from the lower right wall member 35 to the outside of the casing 1 when the temperature of the lower right wall member 35 is higher than a predetermined temperature, When the temperature is lower than that, heat is radiated to heat the lower right wall member 35.

In the third embodiment, the filter mechanism F includes a plurality of bottomed cylindrical filters 5, each of which has a filter opening 5w at its base end facing the clean room 3. They are supported by the partition wall 4 in such a manner that they are lined up in a matrix when viewed in the vertical direction 97. Specifically, the filter mechanism F includes a filter row Fr in which a plurality of filters 5 are arranged in one straight line in the left-right direction 99, and a plurality of filter rows Fr in a direction (front-back direction) perpendicular to the arrangement direction of the plurality of filters 5 in the filter row Fr. Columns are organized.

The injection mechanism J injects the compressed air H discharged through the injection hole 12 provided in the injector pipe 11 into the filter mechanism F from the clean room 3 side in a pulsed manner to remove the dust collected by the filter mechanism F. It is a mechanism that dispels the The injector pipe 11 has filters arranged in a matrix so that the injection holes 12 provided in one injector pipe 11 face each of the plurality of filter openings 5w arranged in a row. A plurality of them are arranged in parallel in the clean room 3 so as to correspond to the opening 5w.

The injection mechanism J includes a header pipe 13 that stores compressed air H from the air compressor 6, and a diaphragm valve 14. The injection mechanism J is configured to inject the compressed air H stored in the header pipe 13 into the injector pipe 11 by switching the diaphragm valve 14 to the open state. Note that the injector pipe 11 has an open end 11w on the base end side and a closed end 11s on the distal end side. Further, the header pipe 13 is provided with a storage pressure detector 15 that detects the pressure of the compressed air H within the header pipe 13. Note that instead of the storage pressure detector 15, a detector for detecting the pressure of the supplied air may be provided, for example, between the air compressor 6 and the compressed air intermittent valve 17.

Further, the dust collector 100 is equipped with a control unit 21 and the like that controls the operation of the dust collector 100 such as the operation of the injection mechanism J.

Each part of the dust collector 100 will be described in more detail below.
[Case 1]
The housing 1 is partitioned into a vertical direction 97 by a partition wall 4, with a dust collection chamber 2 to which dust-containing air G is supplied at the bottom, and purified air purified by a filter 5 provided on the partition wall 4 at the top. A clean chamber 3 through which C flows is formed. The dust collection chamber 2 is an example of a first chamber. The clean room 3 is an example of a second room.
The housing 1 has a generally rectangular outer shape when viewed in the vertical direction 97 at a location where the filter 5 in the dust collection chamber 2 is disposed and a location where the clean chamber 3 is formed. The outer shape of the lower side of the location is formed into a funnel shape.

At the top of the funnel-shaped part of the housing 1, there is a dust-containing air introduction passage 7 that introduces dust-containing air G from an incinerator, steelmaking furnace, etc. (not shown) into the dust collection chamber 2. It is connected. Note that the dust-containing air introduction path 7 may be provided in the housing 1. A purified air discharge path 8 is connected to the upper part of the rectangular portion of the housing 1 for discharging purified air C purified by the filter 5 from the clean room 3 . Specifically, a purified air exhaust path 8 is connected above the partition wall 4 and filter 5 in the housing 1 . A suction device (not shown) is provided on the downstream side of the purified air discharge path 8, and is configured to be able to suck the purified air C in the clean room 3 into the external space. The dust-containing air introduction path 7 is an example of an introduction section. The purified air discharge path 8 is an example of a discharge section.

A discharge port 9 is formed at the lower end of the funnel-shaped portion of the casing 1, and a rotary valve 10 is provided at the discharge port 9. The dust collecting chamber 2 is configured to be able to discharge the dust generated in the dust collection chamber 2 during the time of brushing off the collected dust.

With the configuration described above, dust-containing air G generated in an incinerator, steel-making furnace, etc. is introduced into the dust collection chamber 2 through the dust-containing air introduction path 7 by the suction force of the suction device (not shown), and is passed through the filter 5. By passing through, the dust is collected and becomes purified air C, which is discharged from the clean room 3 through the purified air discharge path 8 to an external space connected to the downstream side of the dust collector 100.

[Filter 5]
The filter 5 includes a support (not shown) formed in a cage shape with a bottom (for example, a cylindrical cage shape with a bottom in which a plurality of straight rod-shaped bodies are attached to a plurality of ring-shaped frames formed in an annular shape). ) is configured as a bag filter in which a bag-shaped (bottomed cylindrical) bag (not shown) that is configured to allow dust-containing air G to pass through is placed on the outside of the filter.
The bug is composed of a filter cloth that can effectively collect dust in the dust-containing air G, for example, a base cloth made of cloth on the inside and a nonwoven fabric attached to the outside of the cloth, nonwoven fabric, woven cloth, etc. configured.
Further, the material of the filter cloth is made of synthetic fiber, glass fiber, or the like.
The lower part of the bag is bag-shaped, the upper opening is a filter opening 5w, and the upper end of the bag is clamped and fixed between the support body and the partition wall 4.
Note that the filter 5 can also be constructed of a bottomless cylindrical bag (not shown) provided with a bottom made of a non-breathable material other than filter cloth, for example.

Each filter 5 is attached to the partition wall 4 in a hanging state with a filter opening 5w formed at its upper end.
In the third embodiment, 14 filters 5 are arranged in one row at equal intervals in the linear filter arrangement direction (left-right direction 99) to form a filter row Fr, and a plurality of filter rows, e.g. 210 filters 5 are arranged in rows (odd-numbered rows) of filter rows Fr arranged at equal intervals in a direction (front-back direction) orthogonal to the filter arrangement direction.
Note that the number of filters 5 (number of columns) constituting the filter row Fr, the number of filter rows Fr, the shape of the bug, etc. can be changed as appropriate in relation to the amount of garbage to be processed, etc.

[Injection mechanism J]
The injector pipe 11 is in a horizontal position with the end on the side of the opening end 11w protruding outside from the side wall of the housing 1, and the remaining part is aligned in the direction in which the 14 filter openings 5w are arranged. It is arranged for each of the 15 filter rows Fr in a state where it is located in the clean room 3 so as to face the 14 filter openings 5w arranged in one row.
Note that the injection hole 12 is constituted by a circular perforation formed in the injector pipe 11. Further, each injector pipe 11 is provided with fourteen injection holes 12 at equal intervals so as to correspond one-to-one to the filter openings 5w of the filter 5.
Note that each injection hole 12 is provided in the injector pipe 11 so that the center of each injection hole 12 is located approximately at the center of each filter opening 5w when viewed in a direction along the axis of each filter 5.
Further, the opening edge of each injection hole 12 is provided with a ring-shaped rising portion by burring so as to protrude outward in the radial direction of the injector pipe 11. The ring-shaped rising portion of the opening edge of the injection hole 12 suppresses the diffusion of the compressed air H injected from the injection hole 12, so compressed air flows from each injection hole 12 to the filter opening 5w of each filter 5. When the compressed air H is injected, leakage of the compressed air H to the outside is sufficiently suppressed. Note that the opening edge of the injection hole 12 does not necessarily have to be burred.

The diaphragm valve 14 is equipped with an electromagnetic valve that opens and closes a pressure chamber that applies back pressure to the diaphragm and an exhaust path that exhausts the pressure chamber. When the solenoid valve is in the closed state, primary pressure (pressure inside the header pipe 13) is guided to the pressure chamber through the communication hole, the pressure of the pressure chamber is applied to the diaphragm, and the valve body attached to the diaphragm is moved to the valve seat. , and the diaphragm valve 14 is brought into a closed state. On the other hand, when the solenoid valve is in the open state, the pressure in the pressure chamber is released and lowered, the diaphragm is pushed by the primary pressure (pressure inside the header pipe 13), and the valve body attached to the diaphragm separates from the valve seat. The diaphragm valve 14 becomes open. That is, the diaphragm valve 14 is switched between an open state and a closed state by the opening/closing operation of the electromagnetic valve.

The air compressor 6 and the header pipe 13 are connected through a compressed air supply path 16, so that the compressed air H discharged from the air compressor 6 is supplied to the header pipe 13.
The compressed air supply path 16 is provided with a compressed air intermittent valve 17 that interrupts the supply of compressed air H to the header pipe 13 .
Then, when a predetermined regeneration timing at which it is necessary to regenerate the filter 5 is reached, the control unit 21 opens the compressed air intermittent valve 17 and controls the compressed air H in the header pipe 13 detected by the storage pressure detector 15. When the pressure reaches a predetermined target storage pressure, the compressed air intermittent valve 17 is closed. Note that the compressed air intermittent valve 17 does not necessarily have to be closed in accordance with the detected pressure of the compressed air H. For example, the time when the pressure of the compressed air H reaches the target storage pressure may be estimated in advance, and the timing for closing the compressed air intermittent valve 17 may be determined to correspond to that time.
That is, compressed air H from the air compressor 6 is stored in the header pipe 13 at the target storage pressure.

The control unit 21 closes the compressed air intermittent valve 17 as the pressure inside the header pipe 13 detected by the storage pressure detector 15 reaches a predetermined target storage pressure, and then closes the seven diaphragm valves 14. A predetermined one of the diaphragm valves 14 is opened during a preset regeneration time. Incidentally, the set regeneration time is set to be slightly shorter than the time required for substantially all of the compressed air H stored in the header pipe 13 to be injected from the injection hole 12 of the injector pipe 11.
That is, when the diaphragm valve 14 is opened, the supply of compressed air H from the air compressor 6 to the header pipe 13 is cut off because the compressed air intermittent valve 17 is closed, and the header pipe The high-pressure compressed air H stored in the injector 13 passes through two (or one) injector pipes 11 and is injected in a pulsed manner from the 14 injection holes 12 provided in the injector pipes 11. As a result, the dust collected on the filter 5 is brushed off.
Note that the above example of controlling the injection mechanism J has been explained in which the opening and closing of the compressed air intermittent valve 16 and the diaphragm valve 14 are controlled according to the reservoir pressure detected by the reservoir pressure detector 15, but it is also possible to control the injection mechanism J by detecting the pressure of the supply air. If a detector is provided, the opening and closing of the compressed air intermittent valve 16 and the diaphragm valve 14 may be controlled depending on the supplied air.

[Wall components]
As shown in FIG. 3, the housing 1 includes an upper wall member 31, a right wall member 32, a left wall member 33, a back wall member 34, a front wall member (not shown), and a lower right wall member. 35 and a lower left wall member 36. The inside and outside of the casing 1 are partitioned by these wall members. These wall members may be made of, for example, a stainless steel plate member, a general structural rolled steel plate member, a sulfuric acid dew point corrosion resistant steel plate, or the like.

Hereinafter, for convenience of explanation, a portion of the right wall member 32 above the partition wall 4 may be referred to as an upper right wall member 32a, and a portion of the right wall member 32 below the partition wall 4 may be referred to as a lower right wall member 32b. be.
A portion of the left wall member 33 above the partition wall 4 may be referred to as an upper left wall member 33a, and a portion of the left wall member 33 below the partition wall 4 may be referred to as a lower left wall member 33b.
A portion of the back wall member 34 above the partition wall 4 may be referred to as a back upper wall member 34a, and a portion of the back wall member 34 below the partition wall 4 may be referred to as a back lower wall member 34b.
A portion of the front wall member above the partition wall 4 may be referred to as a front upper wall member, and a portion of the front wall member below the partition wall 4 may be referred to as a front lower wall member.
Note that the upper right wall member 32a and the lower right wall member 32b, the upper left wall member 33a and the lower left wall member 33b, the upper back wall member 34a and the lower left wall member 34b, and the upper front wall member and the lower front wall member are the same as those in the third embodiment. It may be an integral member, such as, or it may be a separate member.

The clean room 3 of the housing 1 is separated from the outside of the housing 1 by a top wall member 31, a right top wall member 32a, a left top wall member 33a, a back top wall member 34a, and a front top wall member. ing. The upper wall member 31, the upper right wall member 32a, the upper left wall member 33a, the upper back wall member 34a, and the upper front wall member are examples of the wall member and the second wall member.
The dust collection chamber 2 of the housing 1 includes a lower right wall member 32b, a lower left wall member 33b, a lower back wall member 34b, a lower front wall member, a lower right wall member 35, a lower left wall member 36, It is separated from the outside of the casing 1 by. The lower right wall member 32b, the lower left wall member 33b, the lower back wall member 34b, the lower front wall member, the lower right wall member 35, and the lower left wall member 36 are examples of wall members.
As shown in FIG. 3, the lower right wall member 35 and the lower left wall member 36 are located below the filter 5. The lower right wall member 35 and the lower left wall member 36 form the funnel shape described above. The lower right wall member 35 and the lower left wall member 36 are examples of a wall member and a first wall member.

[Heater 25]
As shown in FIG. 3, the heater 25 is disposed in contact with the outer surfaces of the lower right wall member 35 and the lower left wall member 36. The heater 25 generates heat when energized, and heats the lower right wall member 35, the lower left wall member 36, the lower right heat storage section 45, and the lower left heat storage section 46 (described later) with which it comes in contact. Energization/de-energization of the heater 25 is controlled by the control unit 21.

Specifically, the control unit 21 detects the temperature with the temperature sensor 23 provided on the lower right wall member 35 of the housing 1, and turns on the heater 25 when the detected temperature is higher than a predetermined threshold temperature. The heater is de-energized (OFF), and if the temperature is low, the heater is energized (ON). By energizing the heater 25 and dissipating heat from the heat storage section, which will be described later, the inside of the dust collector casing 1 can be maintained at a certain high temperature.

[Heat storage material]
In the third embodiment, a plurality of heat storage sections (upper heat storage section 41, upper right heat storage section 42a, etc.) are arranged in contact with the outer surfaces of the wall members 31 to 36 of the housing 1. In the third embodiment, the heat storage section includes a latent heat storage material. For example, the heat storage section is configured by filling a latent heat storage material inside a hollow container. The latent heat storage material is a material that undergoes a phase transition at a predetermined phase transition temperature and absorbs/releases latent heat. As the heat storage material of the third embodiment, for example, mannitol (166.5°C), transpolybutadiene (145°C), erythritol (119°C), magnesium chloride hexahydrate (117°C), etc. can be used. (The phase transition temperature is in parentheses.) By providing the heat storage section in contact with the outer surface of the wall member, the latent heat storage material of the heat storage section transfers the heat flowing out from the wall member to the outside of the casing 1 through a phase transition when the wall member is at a phase transition temperature or higher. It is absorbed and stored. The latent heat storage material of the heat storage section radiates heat through phase transition to heat the wall member when the temperature of the wall member is lower than the phase transition temperature.

Here, consider an example in which the dust collector 100 is used to treat combustion exhaust gas from a garbage incinerator. Assume that erythritol (phase transition temperature: 119° C.) is used as the latent heat storage material in the heat storage section. The temperature of the combustion exhaust gas is about 160°C to 200°C. When the combustion exhaust gas is introduced into the housing 1 from the dust-containing air introduction path 7, the temperature of the wall member is higher than the phase transition temperature of 119°C, so the latent heat storage material in the heat storage section Removes heat from wall components and stores it as latent heat. When the introduction of combustion exhaust gas from the dust-containing air introduction path 7 is stopped, the temperatures of the wall member and the heat storage section gradually decrease. When the temperature of the wall member and the heat storage portion falls below the phase transition temperature (119° C.) of the latent heat storage material, the latent heat storage material of the heat storage portion undergoes a phase transition and releases latent heat, so that the wall member is heated. As described above, a decrease in the temperature of the wall member of the dust collector 100 is suppressed.

In particular, by using a material with a phase transition temperature higher than the deliquescence temperature of the neutralization products in the combustion exhaust gas as the latent heat storage material in the heat storage part, the temperature of the wall member can be raised to the temperature at which the neutralization products deliquescence. This is preferable because it can suppress the decrease. In addition, by using a material whose phase transition temperature is lower than the temperature of the gas introduced into the dust collector 100 as the latent heat storage material of the heat storage part, heat is stored when the gas is introduced into the inside of the casing 1, Since heat is radiated when the introduction of gas is stopped, it is possible to suppress a decrease in the temperature of the wall member when no gas is introduced into the housing 1, which is preferable.

In the third embodiment, as shown in FIG. 3, the upper heat storage section 41 is arranged in contact with the outer surface of the upper wall member 31. The upper right heat storage section 42a is arranged in contact with the outer surface of the upper right wall member 32a. The upper left heat storage section 43a is arranged in contact with the outer surface of the upper left wall member 33a. A back upper heat storage section (not shown) is arranged in contact with the outer surface of the back upper wall member 34a. A front upper heat storage section (not shown) is arranged in contact with the outer surface of the front upper wall member. These heat storage parts suppress a drop in the temperature of the wall member that partitions the inside of the clean room 3 and the outside of the casing 1. The upper heat storage section 41, the upper right heat storage section 42a, the upper left heat storage section 43a, the upper back heat storage section, and the upper front heat storage section are examples of the heat storage section and the second heat storage section.

In the third embodiment, as shown in FIG. 3, the lower right heat storage section 42b is arranged in contact with the outer surface of the lower right wall member 32b. The lower left heat storage section 43b is arranged in contact with the outer surface of the lower left wall member 33b. A lower back heat storage section (not shown) is arranged in contact with the outer surface of the lower back wall member 34b. A lower front heat storage section (not shown) is arranged in contact with the outer surface of the lower front wall member. The lower right heat storage section 45 is arranged in contact with the outer surface of the lower right wall member 35. The lower left heat storage section 46 is arranged in contact with the outer surface of the lower left wall member 36. These heat storage parts suppress a drop in the temperature of the wall member that partitions the inside of the dust collection chamber 2 and the outside of the housing 1. The lower right heat storage section 42b, the lower left heat storage section 43b, the lower back heat storage section, the lower front heat storage section, the lower right heat storage section 45, and the lower left heat storage section 46 are examples of heat storage sections.

In particular, it is advantageous that the lower right heat storage section 45 and the lower left heat storage section 46 are arranged in contact with the outer surfaces of the lower right wall member 35 and the lower left wall member 36. Dust brushed off from the filter 5 comes into contact with the lower right wall member 35 and the lower left wall member 36 located below the filter 5 . When the temperature of the lower right wall member 35 and the lower left wall member 36 decreases, there is a possibility that dust brushed off from the filter 5 will accumulate due to deliquescence of the neutralized product. The lower right heat storage section 45 and the lower left heat storage section 46 can suppress the accumulation of dust. In addition, when the lower right heat storage section 45 and the lower left heat storage section 46 suppress the temperature drop of the lower right wall member 35 and the lower left wall member 36 and keep them at relatively high temperatures, the lower right wall member 35 and the lower left The temperature of the filter 5 located above the wall member 36 is also preferably maintained at a relatively high temperature due to convection. The lower right heat storage section 45 and the lower left heat storage section 46 are examples of the first heat storage section.

Additionally, in the third embodiment, the heater 25 is placed in contact with the outer surfaces of the lower right wall member 35 and the lower left wall member 36, as shown in FIG. By heating the lower right wall member 35, the lower left wall member 36, the lower right heat storage section 45, and the lower left heat storage section 46 by the heater 25, the same effect as that of the lower right heat storage section 45 and the lower left heat storage section 46 described above is achieved. This is preferable because it is effective and heat can be stored in the lower right heat storage section 45 and the lower left heat storage section 46.

[Modified example]
In the third embodiment, an example in which the heat storage section is configured to include a latent heat storage material has been described. A configuration in which a sensible heat storage material is used instead of or together with the latent heat storage material is also possible. For example, the heat storage section is configured by filling a hollow container with a sensible heat storage material. For example, the sensible heat storage material may be placed in contact with the outer surfaces of the wall members 31 to 36. A sensible heat storage material is a heat storage material that stores heat using the heat capacity of the heat storage material. As the heat storage material of this modification, for example, bricks, gravel, etc. can be used.

Consider an example in which the dust collector 100 is used to treat combustion exhaust gas from a garbage incinerator. Assume that bricks are used as the sensible heat storage material in the heat storage section. The temperature of the combustion exhaust gas is about 160°C to 200°C. When the combustion exhaust gas is introduced into the housing 1 from the dust-containing air introduction path 7, the temperature of the wall member is also about 160°C to 200°C. The heat storage portion that is in contact with the wall member also receives heat from the wall member and has a temperature comparable to that of the wall member. When the introduction of combustion exhaust gas from the dust-containing air introduction path 7 is stopped, the temperature of the wall member gradually decreases. At this time, since the heat storage section radiates heat and gives heat to the wall member, a decrease in the temperature of the wall member is suppressed. As described above, a decrease in the temperature of the wall member of the dust collector 100 is suppressed.

It is also possible to use a chemical heat storage material as the heat storage section. Examples of chemical heat storage materials include calcium oxide and magnesium oxide. The case of using calcium oxide will be explained below. Calcium oxide has the property of causing an exothermic reaction when it absorbs water and producing calcium hydroxide. Therefore, heat can be radiated by using a heat storage material containing calcium oxide as the heat storage part according to the third embodiment and introducing water or steam into the heat storage part when radiating heat such as when operating a dust collector. Furthermore, calcium hydroxide has the property of decomposing at high temperatures and returning to calcium oxide. Therefore, when the dust collector is operated and the environment reaches a certain high temperature, calcium hydroxide returns to calcium oxide due to an endothermic reaction. Therefore, by introducing water or steam, it becomes possible to radiate heat again. In this way, by using a chemical heat storage material and introducing water or steam during heat dissipation, it is possible to suppress a decrease in performance due to a decrease in the temperature of the dust collector. When using a chemical heat storage material as the heat storage part in this way, the dust collector 1 is provided with a water supply part that can introduce water or steam into the heat storage part, and the operation of the water supply part is controlled by the control part 21. .

In the third embodiment, an example has been described in which the heat storage parts 41 to 46 are arranged in contact with the outer surfaces of the wall members 31 to 36 of the housing 1. A configuration in which other members or the like are present between the heat storage parts 41 to 46 and the wall members 31 to 36 is also possible. For example, a waterproof sheet or the like may be placed between the heat storage parts 41 to 46 and the wall members 31 to 36. In this way, even if it is a form in which other members are interposed therebetween, it may be any form as long as it is possible to exchange heat between the heat storage section and the wall member. For example, the heat storage section and the wall member may be thermally connected by a heat pipe or the like.

In the third embodiment, an example has been described in which the heat storage sections 41 to 46 cover the entire housing 1. A configuration in which the heat storage section covers only a part of the housing 1 is also possible. Furthermore, without covering the casing 1 or a part of the casing 1, the heat storage section may be provided only in the vicinity of a part of the wall member of the casing, and only that part may be heated.

For example, it is preferable that a heat storage section be provided near the lower right wall member 35 and the lower left wall member 36. The lower right wall member 35 and the lower left wall member 36 located at the bottom of the filter 5 are places where neutralization products tend to adhere, so if a heat storage section is provided at these places, the adhering neutralization products Deliquescence of substances can be suitably suppressed.

Further, it is preferable that a heat storage section is provided near the upper wall member 31, the upper right wall member 32a, and the upper left wall member 33a, for example. Since the clean chamber 3 is far from the dust-containing air introduction path 7 through which the high-temperature dust-containing air G is introduced, the temperature thereof tends to drop more easily than the dust-collecting chamber 2. Therefore, by providing a heat storage section in the above-mentioned member facing the clean room 3, a decrease in temperature in the clean room 3 can be suppressed.

Further, it is preferable that a heat storage section is provided near the purified air exhaust path 8 or the exhaust port 9, for example. Since these areas are openings, it is structurally difficult to install the heater 25 therein. By providing a heat storage section in place of the heater 25 in these areas, a drop in temperature can be suppressed even without the heater 25. In addition, since it is difficult to install the heater 25 near the dust-containing air introduction path 7, a heat storage section may be provided; It is unlikely that the temperature will decrease even if the section is not provided. Therefore, it is not necessarily necessary to provide a heat storage section.

Further, different heat storage materials may be used depending on the area. For example, when the dust collector 100 is operated, the dust collection chamber 2 becomes high temperature (for example, approximately 400°C), but since the clean room 3 is located away from the dust-containing air introduction path 7, the temperature is lower than that of the dust collection chamber 2 ( For example, approximately 200°C). Therefore, a heat storage material with a high phase transition temperature is provided in the vicinity of the dust collection chamber 2 (upper right wall member 32b, upper left wall member 33b, lower right wall member 35, lower left wall member 36, etc.), and a heat storage material with a high phase transition temperature is provided in the vicinity of the clean room 3 ( The upper wall member 31, the upper right wall member 32a, the upper left wall member 33a, etc.) may be provided with a heat storage material having a low phase transition temperature. According to the above configuration, it is possible to efficiently store heat by providing appropriate heat storage materials in each of the dust collection chamber 2 and the clean room 3, and it is also possible to reduce costs by increasing the number of options for heat storage materials.

Further, a heat insulating material may be used in addition to the heat storage section.

Further, in the third embodiment, an example has been described in which the heater 25 is turned ON/OFF based on the temperature detected by the temperature sensor 23, but other embodiments are also possible. If heat is sufficiently stored in the heat storage section, even if the temperature of the dust collector 100 temporarily becomes low, it may return to the desired temperature due to heat radiation from the heat storage section. This phenomenon is likely to occur, for example, when the dust collector 100 is stopped and then immediately restarted. In view of this, for example, a time sensor (timer) is provided, and even if the temperature detected by the temperature sensor 23 is lower than the threshold temperature, if the temperature detected by the time sensor is shorter than the predetermined threshold time, The heater 25 may be turned off. In other words, the heater may be turned on only when the temperature detected by the temperature sensor 23 is lower than the threshold temperature and the detection time by the time sensor is longer than a predetermined threshold time. For example, the control unit 21 operates the heater 25 when the temperature detected by the temperature sensor 23 is lower than the threshold temperature and the dust collector starts operating after being stopped for longer than a predetermined time. Note that stopping the dust collector means that the introduction of air from the dust-containing air introduction path 7 is stopped, and operation of the dust collector means that air is being introduced from the dust-containing air introduction path 7.

The furnace equipment of the present invention can be used in equipment equipped with a furnace that discharges dust-containing air. Furnaces that discharge dust-containing air include, for example, incinerators such as garbage incinerators and crematoriums, firing furnaces such as kilns and rotary kilns, smelting furnaces such as steelmaking furnaces and blast furnaces, fireplaces such as hearths, stoves, and ovens, Examples include boilers that are the power source for steamships and steam locomotives.

The heat storage device of the present invention can be used to store heat of dust-containing air discharged from a furnace. In addition, this heat storage device can be used to store thermal energy or to be used as a heat source for purposes other than furnace equipment, such as a heat source for agricultural greenhouses, a heat source for sterilizing agricultural hot water, and a heat source for bathing during disasters. be able to.

The heat storage system of the present invention can be used to store heat of dust-containing air discharged from a furnace. Further, this heat storage system can be used to suppress corrosion of the heat storage device.

200, 300...Furnace equipment, 201...Furnace, 202...Dust remover, 203...Heat storage device, 204...Water recovery tank, 205...Blower, 206...Dust collector, 207...Suction pump, L1...Main flow path, L2...Sub flow path , L3... circulation flow path, V1, V2, V3... valve, P1, P2... pressure sensor,
DESCRIPTION OF SYMBOLS 1... Housing, 2... Dust collection room, 3... Clean room, 4... Partition wall, 5... Filter, 7... Dust-containing air introduction path, 8... Purified air exhaust path, 21... Control unit, 23... Temperature sensor, 25... Heater, 31... Upper wall member, 32... Right wall member, 32a... Right upper wall member, 32b... Right lower wall member, 33... Left wall member, 33a... Left upper wall member, 33b... Left lower wall member, 34... Back Wall member, 34a... Back upper wall member, 34b... Back lower wall member, 35... Lower right wall member, 36... Lower left wall member, 41... Upper heat storage section, 42a... Upper right heat storage section, 42b... Lower right heat storage section, 43a... Upper left heat storage section, 43b... Lower left heat storage section, 45... Lower right heat storage section, 46... Lower left heat storage section, C... Purified air, G... Dust-containing air

Claims (7)

A casing and
an introduction part that introduces dust-containing air containing dust from the furnace into the interior of the casing;
a filter that collects the dust;
an exhaust section that exhausts air from inside the casing;
A dust collector comprising: a wall member that partitions the inside and outside of the casing;
a heat storage device that stores heat of dust-containing air containing dust from the furnace,
The heat storage device is a heat storage section that includes a chemical heat storage material and is disposed near the wall member,
The heat storage section absorbs and stores heat flowing from the wall member to the outside of the casing when the wall member is at a predetermined temperature or higher, and radiates the heat when the wall member is below a predetermined temperature. heating the wall components;
The casing has a first chamber and a second chamber through which air can move through the filter, and the introduction section introduces dust-containing air containing dust into the first chamber and discharges the air. The section discharges air from the second chamber, the wall member includes a second wall member that partitions the inside of the second chamber and the outside of the casing, and the heat storage section discharges air from the second wall member. A dust collection system characterized by comprising a second heat storage section that heats . The heat storage section absorbs and stores heat flowing out from the wall member to the outside of the casing when the introduction section introduces dust-containing air into the casing. The dust collection system according to claim 1 , characterized in that the wall member is heated by radiating heat when dust-containing air is not introduced into the interior of the body. The casing has a first chamber and a second chamber through which air can move through the filter, and the introduction section introduces dust-containing air containing dust into the first chamber and discharges the air. The section discharges air from the second chamber, and the wall member partitions the inside of the first chamber and the outside of the casing, and the first wall member is located vertically below the filter. The dust collection system according to claim 1 or 2 , wherein the heat storage section includes a first heat storage section that heats the first wall member. A casing and
an introduction part that introduces dust-containing air containing dust from the furnace into the interior of the casing;
a filter that collects the dust;
an exhaust section that exhausts air from inside the casing;
A dust collector comprising: a wall member that partitions the inside and outside of the casing;
a heat storage device that stores heat of dust-containing air containing dust from the furnace,
The heat storage device is a heat storage section that includes a chemical heat storage material and is disposed in contact with the outer surface of the wall member,
The casing has a first chamber and a second chamber through which air can move through the filter, and the introduction section introduces dust-containing air containing dust into the first chamber and discharges the air. The section discharges air from the second chamber, and the wall member partitions the inside of the first chamber and the outside of the casing, and the first wall member is located vertically below the filter. A dust collection system, wherein the heat storage section includes a first heat storage section that heats the first wall member. The heat storage section absorbs and stores heat flowing from the wall member to the outside of the casing when the wall member is at a predetermined temperature or higher, and radiates the heat when the wall member is below a predetermined temperature. The dust collection system according to claim 4, characterized in that the wall member is heated . The heat storage section absorbs and stores heat flowing out from the wall member to the outside of the casing when the introduction section introduces dust-containing air into the casing. The dust collection system according to claim 4 or 5, characterized in that the wall member is heated by radiating heat when dust-containing air is not introduced into the interior of the body. The casing has a first chamber and a second chamber through which air can move through the filter, and the introduction section introduces dust-containing air containing dust into the first chamber and discharges the air. The section discharges air from the second chamber, the wall member includes a second wall member that partitions the inside of the second chamber and the outside of the casing, and the heat storage section discharges air from the second wall member. The dust collection system according to any one of claims 4 to 6, further comprising a second heat storage section that heats the dust collection system.