KR102063748B1 - Waste heat recovery and dust elimination device for tenter equipment - Google Patents

Abstract

The present invention includes a housing having an inlet for injecting exhaust gas discharged from a tenter facility and an outlet for discharging cleaning gas from which foreign matters of the exhaust gas are removed; Primary dust removal device having a porous plate for removing the giant dust contained in the exhaust gas in the housing; And an energy recovery type secondary dust installed at a rear end of the primary dust removing device to remove fine dust and oil residues of the exhaust gas using an inertial collision phenomenon and a cooling condensation phenomenon, and recover energy of the exhaust gas through heat exchange. It may provide a waste heat recovery and dust removal device for the tenter installation, including a removal device.

Description

Waste heat recovery and dust removal device for tenter facilities {WASTE HEAT RECOVERY AND DUST ELIMINATION DEVICE FOR TENTER EQUIPMENT}

The present invention relates to a waste heat recovery and dust removal apparatus for tenter equipment.

In general, the dyeing process in the dyeing and processing plant consists of three stages: pretreatment, dyeing, and processing.The pretreatment process is a process that cleans a large amount of impurities in the fiber. Account for a large share of energy, and energy is most often associated with water use, mainly related to water washing. The dyeing process is a process of adsorbing dye to fibers in high temperature water. The amount of water used, dyeing temperature, and dyeing time are directly related to the energy consumption.The processing process is to dry the fiber containing water and to give functional agent by dry heat treatment. By the process of setting the fiber by the energy efficiency and the energy consumption of the facility has the largest relationship.

In particular, in the drying process which is one of the processing processes, a tenter installation is used. TENTER, which is used as an ironing machine used to dry and dry fibers, is also known as an extruder, and is used to pin both ears of the fabric in order to make the width of the cloth constant in the dyeing finishing process. It is a device that holds a clip and runs a cloth through steam.

The tenter process, which uses the tenter used as an ironing machine in the dyeing finishing process to make the width of the cloth constant, is a process of drying the dyed fabric, and dyeing by mixing chemicals such as fabric softeners and varnishes rather than simple drying. When the fibers are washed, drying is performed in consideration of shrinkage and relaxation. Cotton (knitted) type works at low temperature, and it works at temperature of 140 ℃ on the basis of the seal.

Exhaust gas discharged after the drying treatment using the tenter facility includes oil (tar), fine dust, and other foreign matter. In particular, a large number of fiber dusts (coarse dusts) are included during fiber drying, and these have good static electricity properties, which may cause a fire due to sparks. In addition, since the fiber dust is large in size and has a property of absorbing oil droplets and adsorbing on the filter, the filter life is very short. In addition, the exhaust gas may contain a large amount of odorous substances (VOCs) to cause odor.

In addition, the discharge temperature of the doubling is about 150 ℃ around a considerable amount of heat energy contained, it was necessary to recycle it.

The present invention appropriately pretreatment of fiber dust contained in the exhaust gas of the tenter facility to prevent the cause of fire in advance, and to reduce the amount of fiber dust adsorbed on the filter to increase the service life of the filter, It is an object of the present invention to provide a waste heat recovery and dust removal apparatus for a tenter facility that recovers and recycles high-temperature energy.

Waste heat recovery and dust removal apparatus for a tenter facility, which is an embodiment of the present invention devised to solve the above problems, the inlet for the exhaust gas discharged from the tenter equipment is introduced and the discharge port for discharging the cleaning gas from which the foreign matter of the exhaust gas is removed A housing having a; A primary dust removing device for removing coarse fiber dust contained in the exhaust gas in the housing; And an energy recovery type secondary dust installed at a rear end of the primary dust removing device to remove fine dust and oil residues of the exhaust gas using an inertial collision phenomenon and a cooling condensation phenomenon, and recover energy of the exhaust gas through heat exchange. It may include a removal device.

Here, the energy recovery type secondary dust removal device may include an inertial heat exchange blade device formed in plurality in parallel.

Here, the heat exchange blade device, the pipe in which the heat medium flows therein; A first blade extending from one side of the pipe and installed at an angle with respect to a moving direction of the exhaust gas; A second blade extending from the other side of the pipe to form an obtuse angle with the first blade; A first blocking blade formed to have an arc with respect to a moving direction of the exhaust gas at a connection point of the first blade and the pipe; And a second blocking blade installed at an end of the second blade.

Here, the heat medium is a coolant supplied from a coolant supply means, and the coolant may be heated by the exhaust gas and supplied to an external device.

Here, the heat medium is a fruit supplied from the fruit supply means, and the pipe is heated by the fruit supply means, so that the oil remains adhered to the first blocking blade and the second blocking blade are removed by heating and melting. Can be.

Here, the first dust removal device, the porous filter is installed perpendicular to the moving direction of the exhaust gas; A filter frame supporting the porous filter and attached to the housing; And it may include a scraper in close contact with the adsorption surface of the porous filter.

Here, the cross section of the housing is a square, the porous filter is a circular filter, the scraper may be installed with a length from the lower surface of the housing to the center point of the housing.

The waste heat recovery and dust removal apparatus for the tenter facility may further include driving means for rotating the porous filter so that the porous filter has a relative rotational motion with respect to the scraper.

Here, the waste heat recovery and dust removal apparatus for the tenter facility may be provided at the lower end of the scraper, and may further include a collecting unit for collecting the coarse dust falling with the rotation of the porous filter.

According to an embodiment of the present invention having the above-described configuration, by pre-treating the fiber dust in advance, it is possible to reduce the maintenance costs caused by the fiber dust is fixed in the energy recovery type secondary dust removal device.

Further, according to an embodiment of the present invention, in the primary dust removal device, by automatically collecting the attached dust in a fixed position, it is possible to conveniently operate the maintenance.

In addition, according to an embodiment of the present invention, it is possible to improve the energy efficiency by recycling the thermal energy contained in the high-temperature exhaust gas.

1 is a block diagram of a dyeing factory system according to an embodiment of the present invention.
Figure 2 is a cross-sectional view for explaining the overall concept of the waste heat recovery and dust removal apparatus for a tenter installation of an embodiment of the present invention.
Figure 3 is an open perspective view of the waste heat recovery and dust removal device for a tenter installation of an embodiment of the present invention.
Figure 4 is a conceptual diagram of the primary dust removal device used in the waste heat recovery and dust removal device for a tenter installation of an embodiment of the present invention.
5 is a view for explaining the concept of the energy recovery type secondary dust removal apparatus used in the waste heat recovery and dust removal apparatus for a tenter installation of an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, which do not limit the present invention, and like reference numerals designate like elements in some drawings.

1 is a block diagram of a dyeing factory system according to an embodiment of the present invention. The dyeing plant system according to an embodiment of the present invention may include a tenter facility (A), waste heat recovery and dust removal device (B), and waste heat recycling device (C).

The tenter facility A is also referred to as a width catcher and a dryer because the tenter facility A is a machine for adjusting a cloth cut between dyeing processes to a predetermined width while maintaining both edges of the cloth with a clip or pin. In the tenter facility A, when the dyeing fabric is dried, hot air is dried or the LNG burner is directly sprayed to dry. At this time, not only a large amount of malodorous substance is generated, but also a large amount of fiber dust from the dyed fabric is generated, thereby exhausting exhaust gas containing the malodorous substance and fiber dust.

Separation and removal of odorous substances, oil vapors, oil residues, and fiber dusts is required in these flue gases. Accordingly, in the present invention, through the waste heat recovery and dust removal device (B) to separate and remove the oil vapor, oil residue and fiber dust, to recover the high-temperature heat energy contained in the exhaust gas is delivered to the waste heat recycling device (D). .

The waste heat recovery and dust removal device (B) is an embodiment of the present invention, comprising an inertial heat exchange blade device 31 to remove oil residues and fine dust through condensation / cooling of oil vapor at the same time as heat recovery, In the process of treating flue-gas containing highly viscous fine dust such as oil residue, heat is removed and fine dust is simultaneously removed. The waste heat recovery and dust removal device (B) is provided with a blade and cools the exhaust gas using a refrigerant as a heat exchange medium, and cools and condenses the oil vapor to easily remove the larger oil residue, while lowering the temperature of the exhaust gas and recovering heat. This device will be described in more detail with reference to FIGS. 2 to 5.

On the other hand, the heat contained in the exhaust gas generated in the tenter facility (A) is obtained through the heat medium (refrigerant) of the waste heat recovery and dust removal device (B), which is recycled waste heat. That is, the heated refrigerant is stored in the heat storage tank, so that the heat of the heat storage tank can be used in the absorption type refrigerator to increase the efficiency of the air conditioner, preheat the salt water in the dyeing plant, or be used in the tenter facility (A).

The waste heat recovery and dust removal apparatus of an embodiment of the present invention among the dyeing plant systems having the above configuration will be described in more detail with reference to FIGS. 2 to 5.

Figure 2 is a cross-sectional view for explaining the overall concept of the waste heat recovery and dust removal device for a tenter facility of one embodiment of the present invention, Figure 3 is an open perspective view of the waste heat recovery and dust removal device for a tenter facility of an embodiment of the present invention. .

As shown, the waste heat recovery and dust removal device (B) for the tenter installation according to an embodiment of the present invention, the gas inlet 11 formed on one side of the housing 10, and installed on the opposite side of the housing 10 A first refrigerant tank 1 provided below the housing 10 and an upper side of the housing 10 between the gas outlet 12, and the gas inlet 11 and the gas outlet 12. The second refrigerant tank 2, and the primary dust removal device 20 provided at the front end of the inlet port 11 side of the housing 10, and a plurality of energy recovery type secondary dust removal device 30 Can be configured. Here, the secondary dust removing device 30 is connected between the heat exchange blade device 31 and the blade device 31 to slide the blade connecting pipe 3 and the blade device, respectively, to allow refrigerant to flow through each other. In this way, it can be configured to include a sliding fastening portion 4 for coupling to the interior of the housing (10).

The gas inlet 11 flows in exhaust gas containing high temperature fiber dust flowing from the tenter facility A described in FIG. 1 to the primary dust removing device 20 and the energy recovery type secondary dust removing device 30. To do that. As shown, the gas inlet 11 is formed in the center of one side of the housing 10 to form the exterior of the waste heat recovery and dust removal device (B) for tenter equipment, and to have a shape that gradually enlarges thereafter. Thus, the exhaust gas is naturally spread and supplied to the primary dust removing device 20 and the secondary dust removing device 30.

On the other hand, the gas discharge port 12 is the low temperature that the physical dust, such as coarse fiber dust, fine dust, vapor and oil residues are removed by the primary dust removal device 20 and the secondary dust removal device 30, and lost heat energy. The flue gas of will flow out. As shown, the gas outlet 12 is formed on the other side of one side of the housing 10, and has a configuration corresponding to the gas inlet (11).

In the housing 10 of the portion adjacent to the gas inlet 11, a primary dust removing device 20 is installed at the tip, and a plurality of heat exchange blade devices 31 are installed thereafter. The primary dust removing apparatus 20 includes a filter frame 21 having a shape corresponding to the cross section of the housing 10, a circular porous filter 22 attached to the filter frame 21, and a porous filter ( 22) is provided with a scraper (23) for separating the coarse fiber dust is attached to the filter surface and fixed to the filter surface from the filter to fall to the collecting portion (not shown), the heat exchange blade device 31 is located in the center The first block formed in a circular arc shape in pairs at the connection point of the pipe, the first blade 312 and the second blade 313, the first blade 312 and the pipe extending from the pipe, the refrigerant flowing heat medium therein The blade may include a second blocking blade 314 installed at the end of the second blade 313. These primary dust removal device 20 and the heat exchange blade device 31 will be described in more detail with reference to FIGS. 4 and 5, respectively.

Meanwhile, a first refrigerant tank 1 in which a liquid refrigerant is stored is installed below the heat exchange blade device 31 installed inside the housing 10, and heat storage is performed by heat exchange above the heat exchange blade device 31. A second refrigerant tank 2 for temporarily storing the used refrigerant is provided.

In the first refrigerant tank 1, the refrigerant supplied to the pipe of the heat exchange blade device 31 is stored in a liquid state. This refrigerant is supplied to the pipe of the adjacent heat exchange blade unit 31 through a connection pipe connecting each heat exchange blade unit 31. The refrigerant supplied in this way is heat-exchanged by heat contact due to thermal contact with the high-temperature exhaust gas moved from the tenter facility A while moving along the pipe. The coolant thus accumulated is temporarily stored in the second coolant tank 2 provided above the heat exchange blade device 31 or supplied to a heat storage tank (not shown) of the external waste heat recycling device D.

A tank inlet for receiving the coolant is formed in the first coolant tank 1, and a tank discharge port for sending the stored coolant to an external heat storage tank is formed in the second coolant tank 2.

In addition, each heat exchange blade device 31 is to be separated and fastened in a sliding manner through the sliding fastening portion 4, so that the replacement and repair of each heat exchange blade device 31 is easy. That is, each heat exchange blade device 31 is modularized, and is engaged with the sliding fastening part 4, positioned in the housing 10, and then interconnected with the connecting pipe 3, so that refrigerant is provided between the blade devices. It can be configured to be circulated so that assembly is simple and maintenance is convenient.

Hereinafter, the structure and operation of the primary dust removal device 20 and the secondary dust removal device 30 of the waste heat recovery and dust removal device (B) for the tenter installation according to an embodiment of the present invention having the above-described configuration This will be described in more detail with reference to FIGS. 4 and 5.

4 is a conceptual diagram of the primary dust removal apparatus used in the waste heat recovery and dust removal apparatus for a tenter installation according to an embodiment of the present invention. As described above, the primary dust removing device 20 is installed at the front end of the housing 10, that is, at the foremost end of the inlet 11 through which the exhaust gas is introduced. The purpose of the primary dust removal device is to remove coarse fiber dust, which is contained in the exhaust gas and causes a fire by a spark phenomenon. For this purpose, the filter frame 21 having a size and shape corresponding to the cross section of the rectangular housing 10 is adhered to the adsorption surface of the porous filter 22 and the porous filter 22 mounted on the filter frame 21. It is configured to include a scraper 23 to be.

The porous filter 22 is configured as a hole having a size to remove coarse fiber dust among foreign matters contained in the exhaust gas while the exhaust gas moving through the inlet 11 passes, and may have a circular shape. In addition, a rotor mounting hole (not shown) is formed at the center of the porous filter 22, and a driving means (not shown) is connected to the rotor mounting hole, so that the filter frame 21 is relative to the scraper 23. It will rotate.

The filter frame 21 has a square or quadrangular shape to be fitted into the housing 10, and a circular filter mounting hole is formed therein, and the porous filter 22 is installed in the filter mounting hole.

The scraper 23 is closely attached to the porous filter 22. The scraper 23 is in a relative rotational motion with respect to the porous filter 22. That is, the scraper 23 rotates, or the porous filter 22 rotates. As a result of this rotation, a large amount of fiber dust fixed to the adsorption surface of the porous filter 22 is collected on one side of the scraper 23 and falls to a collecting part installed below by gravity.

As shown, the scraper 23 is elongated in the longitudinal direction from the central portion of the porous filter 22 to the boundary surface. The rotating side of the scraper 23 is thin and the center thereof is formed thick, so that the fiber dust collected by the scraper 23 is well separated from the porous filter 22, thereby increasing the coarse fiber dust removal efficiency.

In other words, when the scraper 23 is in a fixed state and the porous filter 22 is rotated, fiber dust is collected in the fixed scraper 23, and a predetermined amount of collected fiber dust is scraped by gravity by the scraper 23. It will be collected in the collecting part installed below. Alternatively, the scraper 23 is rotated, the porous filter 22 may be fixed.

Since the above-described primary dust removing device 20 is installed in advance in the energy recovery type secondary dust removing device 30 to be described later, coarse fiber dust is stuck to the blade portion in the secondary dust removing device 30 and is generated. The maintenance difficulty can be prevented in advance.

On the other hand, Figure 5 is a view for explaining the concept of the heat exchange blade device 31 of the energy recovery type secondary dust removal device 30 used in the waste heat recovery and dust removal device (B) for the tenter equipment according to an embodiment of the present invention. Drawing. As shown in FIG. 4, the heat exchange blade device 31 includes: a first blade 312 formed to be inclined at an angle with respect to the flow of the hot exhaust gas (the wind of the exhaust gas); A second blade 313 extending from the first blade 312 with an obtuse angle; It is formed at the connection point of the first blade 312 and the second blade 313, it may be configured to include a pipe 311 through which the heat medium flows. The refrigerant flowing in the pipe is regenerated by the high temperature of the exhaust gas, so that the water and the oil vapor in the exhaust gas are condensed by cooling condensation, so that the first blade 312 and the second blade 313, the first blocking blade, and It forms on the second blocking blade to remove moisture and oil (w). In other words, since the first blade 312 and the second blade 313 are formed to be bent, they can be removed together with the fine dust p and the water w by the inertia collision. Furthermore, a pair of first blocking blades are installed at the connection point of the first blade 312 and the second blade 313 so that contaminants such as dust and moisture collide with each other by forming a vortex in the blocking blade. The collected water and relics are conversationally collected and flowed downward by gravity to remove water and vapor (w) in the flue gas, while lowering the discharge temperature of the flue gas.

The pipe 311 and the first and second blades 312 and 313 may be made of a metal having high thermal conductivity. In particular, in the case of using a metal material having high ductility, high conductivity, and high corrosion resistance, such as copper or aluminum, excellent durability and corrosion resistance are achieved. In addition, when the first blade 312 and the second blade 313 are made of the same material as the pipe, thermal shock does not occur even when thermal expansion occurs due to a temperature difference during operation, thereby providing excellent durability. On the other hand, in order to further increase the inertial impact effect, the second blocking blade 315 is installed at the end of the second blade 313 and the second blocking blade 315 by the water (w) and dust such as dust ( As p) is removed from the exhaust gas, it is possible to lower the temperature of the exhaust gas.

On the other hand, when a lot of oil and dirt is stuck to the first blocking blade 314 and the second blocking blade 315 it is necessary to remove it. In this case, the hot fruit is supplied to the pipe instead of the refrigerant. As a result, the pipe, the first and second blades 312 and 313, and the first and second blocking blades 314 and 315 are heated to a high temperature by the heat of the fruit, so that the oiled remains are liquefied again to be lowered by gravity. To fall. As such, in order to remove fine dust and vapor, the refrigerant is supplied to the pipe through the refrigerant supply means to cause condensation cooling. As a result, the remains, moisture and fine dust in the exhaust gas are coarsened and removed. In addition, the fruit flows into the pipe through the fruit supply means to heat-melt the oil droplets and the fine dust stuck to the blade portion for maintenance, so that the oil droplets fixed on the blade are melted by heating.

According to an embodiment of the present invention having the above-described configuration, by pre-treating the fiber dust in advance, it is possible to reduce the maintenance costs caused by the fiber dust is fixed in the energy recovery type secondary dust removal device.

Further, according to an embodiment of the present invention, in the primary dust removal device, by automatically collecting the attached dust in a fixed position, it is possible to conveniently operate the maintenance.

In addition, according to an embodiment of the present invention, it is possible to improve the energy efficiency by recycling the thermal energy contained in the high-temperature exhaust gas.

The waste heat recovery and dust removal apparatus for the tenter installation described above is not limited to the configuration and method of the above-described embodiments, but all or part of each of the embodiments so that various modifications can be made. May be optionally combined.

10: housing
20: primary dust removing device
21: filter frame
22: porous filter
23: scraper
30: secondary dust removing device
31: inertial heat exchange blade unit
311: pipe
312: first blade
313: second blade
314: first blocking blade
315: second blocking blade
A: tenter equipment
B: waste heat recovery and dust removal device
C: waste heat recycling device

Claims (9)

A housing having an inlet for introducing exhaust gas discharged from the tenter facility and an outlet for discharging the cleaning gas from which foreign substances of the exhaust gas are removed;
A primary dust removing device for removing coarse fiber dust contained in the exhaust gas in the housing; And
It is installed at the rear end of the primary dust removal device, and removes the fine dust and oil remains of the exhaust gas using an inertial collision phenomenon and cooling condensation phenomenon, energy recovery type secondary dust removal to recover the energy of the exhaust gas through heat exchange A device;
The energy recovery type secondary dust removal device includes an inertial heat exchange blade device formed in a plurality of side by side
The heat exchange blade device,
A pipe through which a heat medium flows;
A first blade extending from one side of the pipe and installed at an angle with respect to a moving direction of the exhaust gas;
A second blade extending from the other side of the pipe to form an obtuse angle with the first blade;
A first blocking blade formed to have an arc with respect to a moving direction of the exhaust gas at a connection point of the first blade and the pipe; And
A waste heat recovery and dust removal apparatus for a tenter installation comprising a second blocking blade installed at the end of the second blade.
delete delete The method of claim 1,
The heat medium is a refrigerant supplied from a refrigerant supply means,
The refrigerant is heated by the exhaust gas is supplied to an external device, waste heat recovery and dust removal device for tenter equipment.
The method of claim 4, wherein
The heat medium is a fruit supplied from a fruit supply means,
And said pipe is heated by said fruit supply means, whereby the oil deposits adhering to said first blocking blade and said second blocking blade are removed by heat melting to remove waste heat for the tenter facility.
The method of claim 1,
The first dust removal device,
A porous filter installed perpendicularly to the moving direction of the exhaust gas;
A filter frame supporting the porous filter and attached to the housing; And
A waste heat recovery and dust removal apparatus for a tenter facility comprising a scraper adhered to the adsorption surface of the porous filter.
The method of claim 6,
The cross section of the housing is a square, the porous filter is a circular filter, the scraper is installed with a length from the lower surface of the housing to the center point of the housing, waste heat recovery and dust removal device for tenter equipment.
The method of claim 7, wherein
Further comprising driving means for rotating said porous filter to cause said porous filter to rotate relative to said scraper.
The method of claim 8,
Installed at the lower end of the scraper, and further comprising a collecting unit for collecting the coarse fiber dust falling with the rotation of the porous filter, waste heat recovery and dust removal device for tenter equipment.

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