CN215481941U

CN215481941U - Waste paper papermaking equipment capable of recycling waste heat

Info

Publication number: CN215481941U
Application number: CN202121161955.7U
Authority: CN
Inventors: 杜汉杰; 杜汉民; 黄奇志
Original assignee: Dongguan Taichang Paper Co ltd
Current assignee: Dongguan Taichang Paper Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-01-11
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses waste paper papermaking equipment for recycling waste heat, which is used for producing corrugated core paper, corrugated paper and kraft paper and comprises a water vapor separation device and a hot air supply device, wherein the water vapor separation device and the hot air supply device are used for separating water vapor, and a squeezing dehydration device is arranged in a squeezing part heat insulation sealing chamber.

Description

Waste paper papermaking equipment capable of recycling waste heat

Technical Field

The utility model relates to the technical field of waste paper papermaking, in particular to waste paper papermaking equipment capable of recycling waste heat.

Background

The waste paper is used as paper making raw material to produce corrugated core paper, corrugated paper and kraft paper, after the waste paper is made into paper making pulp, the pulp is sprayed on the net cloth by using pulp spraying equipment to form, after the pulp is sprayed and formed, the net cloth is transferred to a press dewatering device by using a vacuum suction and moving mechanism to press and dewater, and after the press dewatering, the net cloth is directly transferred to a drying unit to be dried and formed. In order to increase the dewatering speed in the squeezing stage, the dewatering press roll of the squeezing dewatering device is generally heated to 50-90 ℃, the squeezing dewatering device is generally provided with dozens of dewatering press rolls with the diameter of 0.5-1.5 meters and the length of 3-6 meters, each dewatering press roll of the squeezing dewatering device releases a large amount of water vapor and hot air in the squeezing dewatering process, and each dewatering press roll of the squeezing dewatering device are exposed in a papermaking forming workshop, so that the heat loss is serious. The squeezing dewatering device and the drying device are huge in size, the drying device is also exposed in a papermaking forming workshop, the whole length of the drying device is 50-100 meters, the height of the drying device is 4-6 meters, the drying device is generally provided with dozens to hundreds of drying rollers with the diameters of 0.5-1.5 meters and the lengths of 3-6 meters, the drying rollers of the drying device can emit a large amount of heat, energy is not saved, the environment is protected, in addition, the temperature in the papermaking forming workshop is higher, and the workshop environment is suitable for workshop workers, so that improvement is necessary.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the waste paper papermaking equipment for recycling the waste heat, which reasonably utilizes the waste heat, reduces the environmental pollution and the energy consumption, and is more energy-saving and environment-friendly in the production process.

In order to achieve the purpose, the utility model adopts the technical scheme that: a waste paper papermaking device capable of recycling waste heat comprises a guniting forming device, a squeezing dewatering device, a drying device, at least one water-vapor separation device and a hot air supply device, wherein the water-vapor separation device and the hot air supply device are used for separating water vapor; the hot water collecting tank is arranged below the squeezing dehydration device, hot water is obtained by recycling through the hot water collecting tank and can be recycled, heat insulation side plates are respectively fixed on the outer edges of four tank walls of the hot water collecting tank, the connecting edges of two adjacent heat insulation side plates are in sealed connection, a heat insulation top plate is fixed above the squeezing dehydration device, four side edges of the heat insulation top plate are respectively in sealed connection with the upper side edges of the four heat insulation side plates, a squeezing part heat insulation sealing chamber is formed above the hot water collecting tank, the squeezing dehydration device is arranged in the squeezing part heat insulation sealing chamber, and a plurality of first water vapor extraction openings for collecting water vapor are arranged on the side surface and/or the top surface of the squeezing part heat insulation sealing chamber; the water-vapor separation device is provided with a water-vapor inlet, a hot air outlet and a cold water outlet, the water-vapor inlet is connected with each first water-vapor extraction port, and the hot air outlet is connected with the hot air return port.

Furthermore, the water-vapor separation device comprises a heat-insulating ceramic main body, a plurality of U-shaped condensation pipes and a plurality of arc-shaped connecting bent pipes, wherein two ends of one connecting bent pipe are respectively communicated with the upper end parts of two adjacent U-shaped condensation pipes to form a multiple condensation pipe group connected into a whole, one end of the multiple condensation pipe group is connected with the water-vapor inlet, the other end of the multiple condensation pipe group is connected with the cold-water outlet, a heat exhaust pipe extends upwards from the upper part of each U-shaped condensation pipe or the upper part of each connecting bent pipe, each heat exhaust pipe is respectively connected with the hot-air outlet, the bottom of each U-shaped condensation pipe is connected with a condensation water discharge pipe, each condensation water discharge pipe is respectively connected with the cold-water outlet, a pipe body accommodating groove matched with the multiple condensation pipe group in shape is arranged in the heat-insulating ceramic main body, the multiple condensation pipe group is embedded in the pipe body accommodating groove, and the water-vapor inlet, the hot air outlet and the cold water outlet respectively protrude from the side surfaces of the insulating ceramic main body.

Further, thermal-insulated ceramic subject includes back thermal-insulated ceramic seat and preceding thermal-insulated ceramic cover board, and the front surface of back thermal-insulated ceramic seat has been seted up the groove is accomodate to the body, and preceding thermal-insulated ceramic cover board is fixed at the front surface of back thermal-insulated ceramic seat, and the groove is accomodate to the sealed body of preceding thermal-insulated ceramic cover board, and back thermal-insulated ceramic seat and the sealed multiple condensation nest of tubes of parcel of preceding thermal-insulated ceramic cover board.

Furthermore, each U-shaped condensing pipe is provided with a first vertical pipe for allowing water vapor to flow downwards, a second vertical pipe for allowing water vapor to flow upwards and a bottom bent pipe, the first vertical pipe and the second vertical pipe are vertically arranged, the left end and the right end of the bottom bent pipe are respectively communicated with the lower end parts of the first vertical pipe and the second vertical pipe, the upper end part of the first vertical pipe vertically extends upwards to form a hot exhaust pipe, and the connecting bent pipe, the first vertical pipe and the hot exhaust pipe are connected into a Y shape.

Furthermore, a pressure regulating valve is arranged at the lower end part of each first vertical pipe, a condensate water discharge pipe vertically extends downwards from the lower end part of each first vertical pipe, the pressure regulating valve is arranged above the condensate water discharge pipe, and the pressure in the first vertical pipe is greater than the pressure in the second vertical pipe.

Furthermore, a drying heat-insulation sealing chamber is arranged outside the drying device, each drying roller is arranged in the drying heat-insulation sealing chamber, a plurality of second water vapor extraction ports used for collecting water vapor are arranged on the upper portion and the top face of the drying heat-insulation sealing chamber, and each second water vapor extraction port is connected with the water vapor inlet respectively.

Furthermore, a first booster pump is installed on the front side of the steam inlet.

Further, hot-air provides the device and is provided with a gas mixing chamber, the steam backward flow mouth with high pressure air supply mouth communicates gas mixing chamber respectively, dewatering hydraulic roll set includes two roll extrusion complex dehydration compression rollers, and each dehydration compression roller has a hollow compression roller inner chamber, and the both ends of each dehydration compression roller are provided with the spindle nose of a intercommunication compression roller inner chamber respectively, and the tip rotation of one of them spindle nose of each dehydration compression roller is installed one the steam inserts the port, the rotatory exhaust port of installing of tip of another spindle nose.

Further, the steam separation device with be provided with the filtration jar between the hot-air provides the device, the bottom of filtering the jar is provided with filters the entry, upper portion is provided with filters the export, filters the inner chamber of jar and is provided with the multilayer moisture absorption cotton, and the upper portion of filtering the inner chamber of jar is provided with the collection chamber, filters export intercommunication collection chamber, filter the export with install the second booster pump between the steam backward flow mouth.

After adopting the structure, compared with the prior art, the utility model has the advantages that: the utility model is used for producing corrugated core paper, corrugated paper and kraft paper, the squeezing dehydration device is sealed in an isolation way, the water vapor generated by the squeezing dehydration device is extracted through the first water vapor extraction port, the heat of the water vapor emitted to a workshop in the dehydration process is recovered and utilized through the water vapor separation device, the hot air is recovered, the waste heat is reasonably utilized, the environmental pollution is reduced, the energy consumption is reduced, and the production process is more energy-saving and environment-friendly.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention.

In the figure:

1 a press dehydration device 11, a dehydration press roll 12, a hot water collecting tank 13, a press part heat insulation sealing chamber 14 and a first water vapor extraction opening.

2 the drying device 21 dries the second vapor extraction opening of the heat insulation sealed chamber 23 by the drying roller 22.

3 water vapor separator 31 water vapor inlet 32 hot air outlet 33 cold water outlet 34 insulated ceramic body 35U-shaped condenser tube 36 first standpipe 37 second standpipe 38 pressure regulating valve 39 condensate outlet tube.

4 hot air supply means 41 hot air return port 42 high pressure air supply port 43 gas mixing chamber.

5 a first booster pump.

6 a second booster pump.

7 canister 71 filter outlet 72 filter inlet 73 plenum 74 is absorbent cotton.

Detailed Description

The following are merely preferred embodiments of the present invention, and do not limit the scope of the present invention.

The utility model provides a waste paper papermaking equipment of recycle waste heat, shown in figure 1, be used for producing corrugated core paper, corrugated paper and kraft paper, including whitewashing forming device, squeeze dewatering device 1, drying device 2, a steam separator 3 and the hot-air that is used for separating steam provide device 4, whitewashing forming device is provided with whitewashing rifle and circulation screen cloth, the whitewashing rifle sets up the top at the front side of circulation screen cloth, be used for to squeezing dewatering device 1 and carry the wet thick liquid layer of shaping, squeeze dewatering device 1 and set up the rear side at whitewashing forming device, be used for carrying the dehydration paper to drying device 2, it is provided with a plurality of dewatering roll sets to squeeze dewatering device 1, drying device 2 sets up the rear side that squeezes dewatering device 1, drying device 2 is provided with a plurality of drying rollers 21. The hot air supply device 4 is provided with a hot air return port 41 and a high pressure air supply port 42, the high pressure air supply port 42 is connected with a hot air access port arranged at a shaft head of the dehydration roller set and used for heating the dehydration roller set, and the high pressure air supply port 42 can also be connected with a hot air access port arranged at a shaft head of the drying roller 21 and used for heating the drying roller 21.

A hot water collecting tank 12 is arranged below the squeezing dehydration device 1, heat-insulating side plates are respectively fixed on the outer edges of four tank walls of the hot water collecting tank 12, the connecting edges of two adjacent heat-insulating side plates are connected in a sealing way, a heat-insulating top plate is fixed above the squeezing dehydration device 1, four side edges of the heat-insulating top plate are respectively connected with the upper side edges of the four heat-insulating side plates in a sealing way, a squeezing part heat-insulating sealing chamber 13 is formed above the hot water collecting tank 12, the squeezing dehydration device 1 is arranged in the squeezing part heat-insulating sealing chamber 13, a plurality of first water vapor pumping and separating ports 14 for collecting water vapor are arranged on the side surface and/or the top surface of the squeezing part heat-insulating sealing chamber 13, the water vapor separating device 3 is provided with a water vapor inlet 31, a hot air outlet 32 and a cold water outlet 33, cold water is discharged through the cold water outlet 33, the cold water is pure water, the cold water can be recycled, although the water consumption is dozens to hundreds of tons per day relative to paper-making enterprises, the recovery of cold water is minimal, but still sufficient for some topical applications.

The steam inlet 31 is connected to each first steam exhaust port 14, and the hot air outlet 32 is connected to the hot air return port 41. Will squeeze dewatering device 1 and keep apart sealedly, the first steam of rethread is taken out from mouthful 14 and is taken out from the steam that squeezes dewatering device 1 and produce, and rethread steam separator 3 retrieves and utilizes the heat of the steam that the dehydration process gived off in the workshop, retrieves and obtains the hot-air, and the rational utilization waste heat reduces environmental pollution, reduces energy resource consumption, and the production process is energy-concerving and environment-protective more.

The water-vapor separation device 3 comprises a heat-insulating ceramic main body 34, a plurality of U-shaped condensation pipes 35 and a plurality of arc-shaped connecting bent pipes, wherein two ends of one connecting bent pipe are respectively communicated with the upper end parts of two adjacent U-shaped condensation pipes 35 to form a multiple condensation pipe group connected into a whole, one end of the multiple condensation pipe group is connected with a water-vapor inlet 31, the other end of the multiple condensation pipe group is connected with a cold-water outlet 33, a heat exhaust pipe extends upwards from the upper part of each U-shaped condensation pipe 35 or the upper part of each connecting bent pipe, each heat exhaust pipe is respectively connected with a hot-air outlet 32, the bottom of each U-shaped condensation pipe 35 is connected with a condensation water discharge pipe 39, each condensation water discharge pipe 39 is respectively connected with the cold-water outlet 33, a pipe accommodating groove matched with the multiple condensation pipe group in shape is arranged in the heat-insulating ceramic main body 34, the multiple condensation pipe group is embedded in the pipe accommodating groove, and the water-vapor inlet 31, The hot air outlet 32 and the cold water outlet 33 respectively protrude from the side of the insulating ceramic body 34. Keep apart comdenstion water discharge pipe 39 through thermal-insulated ceramic main part 34, avoid heat loss in the steam separation process, the front surface of back thermal-insulated ceramic seat has been seted up the groove is accomodate to the body, and preceding thermal-insulated ceramic cover plate is fixed at the front surface of back thermal-insulated ceramic seat, and the groove is accomodate to the sealed body of preceding thermal-insulated ceramic cover plate, and back thermal-insulated ceramic seat and the sealed multiple condenser pipe group of parcel of preceding thermal-insulated ceramic cover plate. First booster pump 5 is installed to the front side of steam entry 31, promotes the pressure that gets into the steam of multiple condenser tube group, promotes the temperature that not only can promote the hot-air of separating out through increasing pressure lift separation, can also promote steam separation efficiency, reduces the heat loss among the steam separation process to reduce heat loss.

Each U-shaped condensing pipe 35 has a first vertical pipe 36 through which water vapor flows downward, a second vertical pipe 37 through which water vapor flows upward, and a bottom bent pipe, the first vertical pipe 36 and the second vertical pipe 37 are vertically disposed, the left and right ends of the bottom bent pipe are respectively communicated with the lower end portions of the first vertical pipe 36 and the second vertical pipe 37, a heat exhaust pipe vertically extends upward from the upper end portion of the first vertical pipe 36, and the connecting bent pipe, the first vertical pipe 36 and the heat exhaust pipe are connected into a Y shape. The lower end of each first vertical pipe 36 is provided with a pressure regulating valve 38, the lower end of each first vertical pipe 36 vertically extends downwards to form a condensed water discharge pipe 39, the pressure regulating valve 38 is arranged above the condensed water discharge pipe 39, and the pipe pressure of the first vertical pipe 36 and the pipe pressure of the second vertical pipe 37 are controlled through the pressure regulating valve 38, so that the pipe pressure of the first vertical pipe 36 is greater than the pipe pressure of the second vertical pipe 37, the condensation speed of water vapor is increased, and the water vapor separation speed is increased.

The hot air supply device 4 is provided with a gas mixing chamber 43, hot gas backward flow mouth 41 and high pressure air supply mouth 42 communicate gas mixing chamber 43 respectively, dehydration compression roller set includes two roll extrusion complex dehydration compression rollers 11, each dehydration compression roller 11 has a hollow compression roller inner chamber, each both ends of dehydration compression roller 11 are provided with the spindle nose of a intercommunication compression roller inner chamber respectively, a hot air access mouth is installed in the tip rotation of one of them spindle nose of each dehydration compression roller 11, an exhaust port is installed in the tip rotation of another spindle nose, in order to realize providing the heat source and heating dehydration compression roller 11 to dehydration compression roller 11.

A filter tank 7 is arranged between the water-vapor separation device 3 and the hot air supply device 4, a filter inlet 72 is arranged at the bottom of the filter tank 7, a filter outlet 71 is arranged at the upper part of the filter tank 7, a plurality of layers of moisture absorption cotton 74 are arranged in the inner cavity of the filter tank 7 and are used for absorbing residual water vapor to obtain dry hot air, an air collection chamber 73 is arranged at the upper part of the inner cavity of the filter tank 7, the filter outlet 71 is communicated with the air collection chamber 73, the hot air after the water vapor is absorbed by the moisture absorption cotton 74 is focused in the air collection chamber 73, the air pressure is increased and then is exhausted through the filter outlet 71, the exhaust speed of the hot air is improved, a second booster pump 6 is arranged between the filter outlet 71 and the hot air return port 41, the pressure of the hot air pumped into the gas mixing chamber 43 is improved, the air pressure of the hot air is slightly higher than the air pressure of the hot air provided by the hot air supply device 4, the hot air is prevented from entering the filter tank 7 in a reverse-series manner, and the heat exchange speed of the hot air and the hot air is improved at the same time, the hot mixed gas having the same temperature is obtained in the gas mixing chamber 43 and then is output through the high-pressure gas supply port 42.

The externally mounted of drying device 2 has a stoving seal chamber 22 that insulates against heat, and each stoving roller 21 sets up in stoving seal chamber 22 that insulates against heat, and the upper portion and the top surface of stoving seal chamber 22 that insulate against heat are provided with a plurality of second steam that are used for collecting steam and take out a mouthful 23, and each second steam is taken out a mouthful 23 and is connected steam entry 31 respectively to realize retrieving and utilizing the heat that stoving roller 21 distributed out.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a waste paper papermaking equipment of recycle waste heat, including whitewashing forming device, squeeze dewatering device (1) and drying device (2), whitewashing forming device is provided with whitewashing rifle and circulation screen cloth, the whitewashing rifle sets up the top at the front side of circulation screen cloth, be used for to squeezing dewatering device (1) transport shaping wet pulp layer, squeeze dewatering device (1) and set up the rear side at whitewashing forming device, be used for to drying device (2) transport dehydration paper, squeeze dewatering device (1) and be provided with a plurality of dewatering roller sets, drying device (2) set up the rear side of squeezing dewatering device (1), drying device (2) are provided with a plurality of drying rollers (21), its characterized in that: comprises at least one water-steam separating device (3) for separating water steam and a hot air supply device (4),

the hot air supply device (4) is provided with a hot air return port (41) and a high-pressure air supply port (42), and the high-pressure air supply port (42) is connected with a hot air access port arranged at a shaft head of the dewatering roll set or a hot air access port arranged at a shaft head of the drying roll (21);

a hot water collecting tank (12) is arranged below the squeezing dehydration device (1), heat-insulating side plates are respectively fixed on the outer edges of four tank walls of the hot water collecting tank (12), the connecting edges of two adjacent heat-insulating side plates are connected in a sealing manner, a heat-insulating top plate is fixed above the squeezing dehydration device (1), four side edges of the heat-insulating top plate are respectively connected with the upper side edges of the four heat-insulating side plates in a sealing manner, a squeezing part heat-insulating sealing chamber (13) is formed above the hot water collecting tank (12), the squeezing dehydration device (1) is arranged in the squeezing part heat-insulating sealing chamber (13), and a plurality of first water vapor extraction openings (14) for collecting water vapor are arranged on the side surface and/or the top surface of the squeezing part heat-insulating sealing chamber (13);

the water vapor separation device (3) is provided with a water vapor inlet (31), a hot air outlet (32) and a cold water outlet (33), the water vapor inlet (31) is connected with each first water vapor extraction port (14), and the hot air outlet (32) is connected with a hot air return port (41).

2. The used paper papermaking apparatus for recycling waste heat according to claim 1, wherein: the water-vapor separation device (3) comprises a heat-insulating ceramic main body (34), a plurality of U-shaped condensation pipes (35) and a plurality of arc-shaped connecting bent pipes, wherein two ends of one connecting bent pipe are respectively communicated with the upper ends of two adjacent U-shaped condensation pipes (35) to form a multi-condensation pipe group which is integrally connected, one end of the multi-condensation pipe group is connected with a water-vapor inlet (31) and the other end of the multi-condensation pipe group is connected with a cold water outlet (33), a hot exhaust pipe extends upwards from the upper part of each U-shaped condensation pipe (35) or the upper part of each connecting bent pipe and is respectively connected with a hot air outlet (32), the bottom of each U-shaped condensation pipe (35) is respectively connected with a condensed water discharge pipe (39), each condensed water discharge pipe (39) is respectively connected with the cold water outlet (33), and a pipe body accommodating groove matched with the multi-condensation pipe group in shape is arranged inside the heat-insulating ceramic main body (34), the multiple condensation pipe group is embedded in the pipe body accommodating groove, and the water vapor inlet (31), the hot air outlet (32) and the cold water outlet (33) respectively extend out of the side surface of the heat insulation ceramic main body (34).

3. The used paper papermaking apparatus for recycling waste heat according to claim 2, wherein: thermal-insulated ceramic main part (34) have been seted up including back thermal-insulated ceramic seat and preceding thermal-insulated ceramic apron, the front surface of back thermal-insulated ceramic seat the groove is accomodate to the body, and preceding thermal-insulated ceramic apron is fixed at the front surface of back thermal-insulated ceramic seat, and the groove is accomodate to the sealed body of preceding thermal-insulated ceramic apron, and back thermal-insulated ceramic seat and the sealed multiple condenser pipe group of parcel of preceding thermal-insulated ceramic apron.

4. The used paper papermaking apparatus for recycling waste heat according to claim 3, wherein: each U-shaped condensing pipe (35) is provided with a first vertical pipe (36) for allowing water vapor to flow downwards, a second vertical pipe (37) for allowing water vapor to flow upwards and a bottom bent pipe, the first vertical pipe (36) and the second vertical pipe (37) are vertically arranged, the left end and the right end of the bottom bent pipe are respectively communicated with the lower end parts of the first vertical pipe (36) and the second vertical pipe (37), the upper end part of the first vertical pipe (36) vertically extends upwards to form a heat exhaust pipe, and the connecting bent pipe, the first vertical pipe (36) and the heat exhaust pipe are connected into a Y shape.

5. The used paper papermaking apparatus for recycling waste heat according to claim 4, wherein: the lower end part of each first vertical pipe (36) is provided with a pressure regulating valve (38), the lower end part of each first vertical pipe (36) vertically extends downwards to form a condensed water discharge pipe (39), the pressure regulating valve (38) is arranged above the condensed water discharge pipe (39), and the pipe internal pressure of the first vertical pipe (36) is greater than the pipe internal pressure of the second vertical pipe (37).

6. The used paper papermaking apparatus for recycling waste heat according to any one of claims 1 to 5, wherein: the drying device is characterized in that a drying heat-insulation sealing chamber (22) is arranged outside the drying device (2), each drying roller (21) is arranged in the drying heat-insulation sealing chamber (22), a plurality of second water vapor extraction ports (23) used for collecting water vapor are arranged on the upper portion and the top surface of the drying heat-insulation sealing chamber (22), and each second water vapor extraction port (23) is connected with the water vapor inlet (31) respectively.

7. The used paper papermaking apparatus for recycling waste heat according to claim 6, wherein: and a first booster pump (5) is arranged on the front side of the steam inlet (31).

8. The used paper papermaking apparatus for recycling waste heat according to claim 7, wherein: hot-air provides device (4) is provided with a gas mixing chamber (43), hot gas backward flow mouth (41) with high pressure gas supply mouth (42) communicates gas mixing chamber (43) respectively, it includes two roll extrusion complex dehydration compression rollers (11) to take off the hydraulic roll group, and each dehydration compression roller (11) has a hollow compression roller inner chamber, and the both ends of each dehydration compression roller (11) are provided with the spindle nose of an intercommunication compression roller inner chamber respectively, and one is installed in the tip rotation of one of them spindle nose of each dehydration compression roller (11) the tip rotation of hot gas access mouth, another spindle nose installs a gas vent.

9. The used paper papermaking apparatus for recycling waste heat according to claim 8, wherein: steam separator (3) with be provided with between hot-air supply device (4) and filter jar (7), the bottom of filtering jar (7) is provided with filters entry (72), upper portion is provided with and filters export (71), and the inner chamber of filtering jar (7) is provided with multilayer absorbent cotton (74), and the upper portion of the inner chamber of filtering jar (7) is provided with collection chamber (73), filters export (71) intercommunication collection chamber (73), filter export (71) with install second booster pump (6) between hot gas backward flow mouth (41).