Papermaking sludge flue gas treatment system

Abstract

The invention belongs to the technical field of papermaking sludge flue gas treatment, particularly relates to a papermaking sludge flue gas treatment system, and aims to solve the problems that in the prior art, flue gas generated by papermaking contains a large amount of heat, if the flue gas is directly discharged, not only is the environment polluted, but also energy is wasted. The sludge treatment device comprises a sludge treatment cylinder used for preheating sludge, four supporting legs are arranged at the bottom of the sludge treatment cylinder, a sludge conveying cylinder is fixedly installed in the sludge treatment cylinder, a heating cavity is formed between the sludge treatment cylinder and the sludge conveying cylinder, a heating pipe is arranged in the heating cavity, and the heating pipe is wound around the outer side of the sludge conveying cylinder. A sludge inlet is formed in the top of the sludge conveying cylinder; a sludge discharge pipe is arranged on the right lower side of the sludge conveying cylinder. Sludge is dried and preheated through flue gas, heat energy can be saved, the flue gas can be filtered, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking sludge fume treatment, and in particular to a papermaking sludge fume treatment system. Background Art

[0002] A large amount of sludge is generated during the papermaking process. Its main components are dust and unseparated pulp, felt fibers and seasonings. The outstanding characteristics of paper mill sludge are high moisture content, low calorific value, unpleasant odor, and harmful substances such as pathogenic bacteria and heavy metals. Conventional treatment methods have different degrees of pollution to the environment.

[0003] Papermaking sludge treatment and disposal is an important part of sewage treatment. The degree of treatment and disposal is an important criterion for evaluating the status of sewage treatment. If the treatment and disposal work is not done well, it will become a pollution transfer, which will pollute the soil, water source and even the food chain again. The current sludge treatment methods mainly include sanitary landfill, thermal chemical treatment and agricultural composting, among which thermal treatment includes drying, incineration and pyrolysis.

[0004] Publication (Announcement) No.: CN202054713U discloses an easy-to-use papermaking sludge treatment device, which includes a dewatering machine, a dryer, a granulator, a boiler, a separation tank and a reaction tank. The inlet of the dewatering machine is connected to the sludge source, the outlet of the dewatering machine is connected to the dryer, the outlet of the dryer is connected to the granulator, the outlet of the granulator is connected to the boiler, the slag discharge port of the boiler is connected to the separation tank, the outlet of the separation tank is connected to the reaction tank, the boiler is also provided with a heat pipe connected to the dryer, the separation tank is also provided with a slag discharge port and a water inlet, the reaction tank is also provided with a liquid inlet, the outlet of the reaction tank is connected to a post-processing process, and the dewatering machine is a belt sludge dewatering machine.

[0005] In the prior art, the flue gas generated by papermaking contains a large amount of heat. If it is directly discharged, it will not only pollute the environment, but also waste energy. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the flue gas generated by papermaking in the prior art contains a large amount of heat, which if directly discharged not only pollutes the environment but also wastes energy, and thus proposes a papermaking sludge flue gas treatment system.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A papermaking sludge flue gas treatment system, comprising:

[0009] A sludge treatment cylinder is used to preheat the sludge. Four supporting legs are provided at the bottom of the sludge treatment cylinder. A sludge conveying cylinder is fixedly installed inside the sludge treatment cylinder. A heating chamber is formed between the sludge treatment cylinder and the sludge conveying cylinder. A heating pipe is provided in the heating chamber. The heating pipe is wound around the outside of the sludge conveying cylinder. A sludge adding port is provided at the top of the sludge conveying cylinder. A sludge discharging pipe is provided at the lower right side of the sludge conveying cylinder. The sludge adding port is located outside the sludge treatment cylinder. An air inlet is provided on the left side of the heating pipe, and an air outlet is provided on the right side of the heating pipe.

[0010] The conveying mechanism is installed inside the sludge conveying cylinder and is used to convey the sludge;

[0011] A flue gas treatment box is located on the side of the sludge treatment cylinder. A partition is provided inside the flue gas treatment box. A curved pipe is connected to the partition to divide the flue gas treatment box into a filtration area and an adsorption area. The bottom end of the air outlet pipe extends to the flue gas treatment box and is located in the filtration area.

[0012] The flue gas adsorption mechanism is installed in the adsorption area and is used for adsorbing and filtering the flue gas.

[0013] Preferably, the conveying mechanism includes a conveying shaft, which is rotatably mounted inside the sludge conveying cylinder through bearings, and spiral blades are mounted on the outer side of the conveying shaft, and the spiral blades are in contact with the inner wall of the sludge conveying cylinder. A servo motor is mounted on the outer side of the sludge treatment cylinder, and a driving gear is mounted on the output shaft of the servo motor. A passive gear is mounted on the outer side of the conveying shaft, and the driving gear is meshed with the passive gear; the servo motor drives the driving gear to rotate, and the driving gear drives the conveying shaft to rotate through the passive gear, and the conveying shaft drives the spiral blades to rotate, so that the sludge can be transferred forward.

[0014] Preferably, the left side of the flue gas treatment box is connected to a liquid level scale tube, and the top of the flue gas treatment box is provided with a liquid filling port, and the liquid filling port is located inside the filter area.

[0015] Preferably, the smoke adsorption mechanism includes a rectangular box, a circular hole is opened on the left side of the rectangular box, a filter is arranged inside the rectangular box, activated carbon particles are arranged on the inner side of the rectangular box, and the activated carbon particles are located on the right side of the filter; adsorption and filtration are performed through the filter and multiple activated carbon particles.

[0016] Preferably, a blocking net is installed on the right side of the rectangular box, nuts are fixedly installed on the bottom inner wall and the top inner wall of the rectangular box, and screws are provided between the blocking net and the nuts; the blocking net can be removed by removing the screws.

[0017] Preferably, a sealing plug is fixedly installed on the top of the rectangular box, a mounting plate is fixedly installed on the top of the sealing plug, a mounting hole is opened on the top of the flue gas treatment box, the sealing plug is sealed and connected to the mounting hole, and a handle is fixedly installed on the top of the mounting plate; the sealing plug is used to seal the mounting hole.

[0018] Preferably, four fixing blocks are fixedly installed on the top of the flue gas treatment box, and four fixing grooves are opened on the bottom of the mounting plate, and the four fixing blocks match the four fixing grooves.

[0019] Preferably, an elastic groove is provided on the inner wall of the fixing groove, an elastic block is slidably installed in the elastic groove, a triangular block is fixedly installed on the outer side of the elastic block, a triangular groove is provided on the fixing block, the triangular block cooperates with the triangular groove, and a spring is installed between the elastic block and the elastic groove; the spring provides elastic force to the elastic block, and the elastic block drives the triangular block to be inserted into the triangular groove, so that the mounting plate can be fixed on the flue gas treatment box.

[0020] Preferably, an exhaust pipe is provided on the top of the flue gas treatment box, and the bottom end of the exhaust pipe is located in the adsorption area.

[0021] In the present invention, the beneficial effects of the papermaking sludge flue gas treatment system are:

[0022] In this solution, sludge is added into the sludge conveying cylinder through the sludge adding port, the servo motor drives the driving gear to rotate, the driving gear drives the conveying shaft to rotate through the passive gear, the conveying shaft drives the spiral blade to rotate, and the sludge can be conveyed forward, the flue gas enters the heating tube through the air inlet, the heating tube is wound around the outside of the sludge conveying cylinder and heats the inside of the sludge conveying cylinder, and the sludge can be heated;

[0023] In this scheme, the flue gas is introduced into the filter area through the exhaust pipe, and the liquid arranged inside the filter area can finally cool down the flue gas and filter it. The liquid inside the filter area is displayed by the liquid level scale tube. The flue gas is introduced into the adsorption area through the curved pipe, and the flue gas enters the rectangular box through the circular hole, and is adsorbed and filtered by the filter screen and multiple activated carbon particles. Then, the filtered flue gas is discharged through the exhaust pipe. The handle is pulled to drive the mounting plate to move upward, and the mounting plate drives the sealing plug and the rectangular box to move upward and leave the mounting hole. The rectangular box can be taken out of the flue gas treatment box for cleaning, the filter screen can be cleaned, and the activated carbon particles can be replaced.

[0024] The present invention utilizes flue gas to dry and preheat the sludge, which can save heat energy, filter the flue gas and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a papermaking sludge flue gas treatment system proposed by the present invention;

[0026] Figure 2 A side structural schematic diagram of a papermaking sludge flue gas treatment system proposed by the present invention;

[0027] Figure 3 This is a schematic structural diagram of part A of a papermaking sludge flue gas treatment system proposed by the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the rectangular box and the blocking net proposed by the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the elastic block and the triangular block proposed by the present invention.

[0030] In the figure: 1. Sludge treatment cylinder; 2. Support legs; 3. Sludge conveying cylinder; 4. Heating pipe; 5. Air inlet; 6. Air outlet pipe; 7. Sludge inlet; 8. Conveying shaft; 9. Spiral blade; 10. Sludge discharge pipe; 11. Protective shell; 12. Servo motor; 13. Driving gear; 14. Passive gear; 15. Flue gas treatment box; 16. Partition; 17. Filter area; 18. Adsorption area; 19. Liquid level scale tube; 2 0. Liquid filling port; 21. Bend pipe; 22. Rectangular box; 23. Round hole; 24. Filter screen; 25. Barrier screen; 26. Activated carbon particles; 27. Exhaust pipe; 28. Mounting plate; 29. ​​Mounting hole; 30. Sealing plug; 31. Nut; 32. Screw; 33. Fixing groove; 34. Fixing block; 35. Elastic groove; 36. Elastic block; 37. Spring; 38. Triangular groove; 39. Handle; 40. Triangular block. DETAILED DESCRIPTION

[0031] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0032] Embodiment 1

[0033] Reference Figure 1-Figure 5 A papermaking sludge flue gas treatment system, comprising a sludge treatment cylinder 1 for preheating sludge, four supporting legs 2 are arranged at the bottom of the sludge treatment cylinder 1, a sludge conveying cylinder 3 is fixedly installed inside the sludge treatment cylinder 1, a heating chamber is formed between the sludge treatment cylinder 1 and the sludge conveying cylinder 3, a heating pipe 4 is arranged in the heating chamber, the heating pipe 4 is wound around the outside of the sludge conveying cylinder 3, a sludge adding port 7 is arranged at the top of the sludge conveying cylinder 3, a sludge discharging pipe 10 is arranged at the lower right side of the sludge conveying cylinder 3, the sludge adding port 7 is located at the outside of the sludge treatment cylinder 1, an air inlet 5 is arranged on the left side of the heating pipe 4, and an air outlet pipe 6 is arranged on the right side of the heating pipe 4;

[0034] The conveying mechanism is installed inside the sludge conveying cylinder 3 and is used to convey the sludge;

[0035] The flue gas treatment box 15 is located on the side of the sludge treatment cylinder 1. A partition 16 is provided inside the flue gas treatment box 15. The partition 16 is connected with a curved pipe 21 to divide the flue gas treatment box 15 into a filtering area 17 and an adsorption area 18. The bottom end of the air outlet pipe 6 extends to the flue gas treatment box 15 and is located in the filtering area 17.

[0036] The smoke adsorption mechanism is installed in the adsorption area 18 and is used for adsorbing and filtering the smoke.

[0037] Reference Figure 1 In this embodiment, the conveying mechanism includes a conveying shaft 8, which is rotatably installed inside the sludge conveying cylinder 3 through a bearing, and a spiral blade 9 is installed on the outer side of the conveying shaft 8, and the spiral blade 9 is in contact with the inner wall of the sludge conveying cylinder 3. A servo motor 12 is installed on the outer side of the sludge treatment cylinder 1, and a driving gear 13 is installed on the output shaft of the servo motor 12. A passive gear 14 is installed on the outer side of the conveying shaft 8, and the driving gear 13 is meshed with the passive gear 14; the servo motor 12 drives the driving gear 13 to rotate, and the driving gear 13 drives the conveying shaft 8 to rotate through the passive gear 14, and the conveying shaft 8 drives the spiral blade 9 to rotate, so that the sludge can be transmitted forward.

[0038] Reference Figure 2 In this embodiment, a liquid level scale tube 19 is connected to the left side of the flue gas treatment box 15 , and a liquid filling port 20 is provided on the top of the flue gas treatment box 15 , and the liquid filling port 20 is located inside the filter area 17 .

[0039] Reference Figure 3 , Figure 4 In this embodiment, the smoke adsorption mechanism includes a rectangular box 22, a circular hole 23 is opened on the left side of the rectangular box 22, a filter screen 24 is arranged inside the rectangular box 22, activated carbon particles 26 are arranged on the inner side of the rectangular box 22, and the activated carbon particles 26 are located on the right side of the filter screen 24; adsorption and filtration are performed through the filter screen 24 and multiple activated carbon particles 26.

[0040] Reference Figure 3 In this embodiment, a blocking net 25 is installed on the right side of the rectangular box 22, and nuts 31 are fixedly installed on the bottom inner wall and the top inner wall of the rectangular box 22, and screws 32 are provided between the blocking net 25 and the nuts 31; by removing the screws 32, the blocking net 25 can be removed.

[0041] Reference Figure 3In this embodiment, a sealing plug 30 is fixedly installed on the top of the rectangular box 22, a mounting plate 28 is fixedly installed on the top of the sealing plug 30, a mounting hole 29 is opened on the top of the flue gas treatment box 15, the sealing plug 30 is sealed and connected to the mounting hole 29, and a handle 39 is fixedly installed on the top of the mounting plate 28; the sealing plug 30 is used to seal the mounting hole 29.

[0042] Reference Figure 3 In this embodiment, four fixing blocks 34 are fixedly installed on the top of the flue gas treatment box 15, and four fixing grooves 33 are opened at the bottom of the mounting plate 28. The four fixing blocks 34 cooperate with the four fixing grooves 33.

[0043] Reference Figure 3 , Figure 5 In this embodiment, an elastic groove 35 is provided on the inner wall of the fixing groove 33, and an elastic block 36 is slidably installed in the elastic groove 35. A triangular block 40 is fixedly installed on the outer side of the elastic block 36. A triangular groove 38 is provided on the fixing block 34, and the triangular block 40 cooperates with the triangular groove 38. A spring 37 is installed between the elastic block 36 and the elastic groove 35; the spring 37 provides elastic force for the elastic block 36, and the elastic block 36 drives the triangular block 40 to be inserted into the triangular groove 38, so that the mounting plate 28 can be fixed on the flue gas treatment box 15.

[0044] Reference Figure 2 In this embodiment, an exhaust pipe 27 is provided on the top of the flue gas treatment box 15 , and the bottom end of the exhaust pipe 27 is located in the adsorption area 18 .

[0045] Working mode: When in use, the power supply and PLC controller can be turned on to control the electrical appliances. The prior art will not be described in detail here. Sludge is added to the sludge conveying cylinder 3 through the sludge adding port 7. The servo motor 12 drives the driving gear 13 to rotate. The driving gear 13 drives the conveying shaft 8 to rotate through the passive gear 14. The conveying shaft 8 drives the spiral blade 9 to rotate, so that the sludge can be conveyed forward. The flue gas enters the heating tube 4 through the air inlet 5. The heating tube 4 is wound around the outside of the sludge conveying cylinder 3 and heats the inside of the sludge conveying cylinder 3. The sludge can be heated and then discharged through the sludge discharge pipe 10. The flue gas is introduced into the filter area 17 through the outlet pipe 6. The liquid arranged inside the filter area 17 can finally cool the flue gas and filter it. The liquid inside the filter area 17 is displayed by the liquid level scale tube 19. The flue gas is introduced into the adsorption area 18 through the curved pipe 21, and the flue gas enters the rectangular box 22 through the circular hole 23, and is adsorbed and filtered by the filter screen 24 and multiple activated carbon particles 26. Then the filtered flue gas is discharged through the exhaust pipe 27, and the handle 39 is pulled to drive the mounting plate 28 to move upward, and the mounting plate 28 drives the sealing plug 30 and the rectangular box 22 to move upward and leave the mounting hole 29. The rectangular box 22 can be taken out of the flue gas treatment box 15 for cleaning, the filter screen 24 can be cleaned, and the activated carbon particles 26 can be replaced. After reinstallation, the sealing plug 30 is inserted into the mounting hole 29 to seal the mounting hole 29, and the four fixing blocks 34 are inserted into the four fixing grooves 33. The spring 37 provides elastic force for the elastic block 36, and the elastic block 36 drives the triangular block 40 to be inserted into the triangular groove 38, so that the mounting plate 28 can be fixed on the flue gas treatment box 15.

[0046] Embodiment 2

[0047] The rest of the embodiment 2 is the same as the embodiment 1, except that a protective shell 11 is installed on the outside of the sludge treatment cylinder 1, and the driving gear 13 and the passive gear 14 are located inside the protective shell 11. The protective shell 11 is used to protect the driving gear 13 and the passive gear 14. This application includes all the structural shapes, sizes and materials of the embodiment 1. In order to meet the specific usage conditions, they can be selected and adjusted. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0048] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A papermaking sludge flue gas treatment system, characterized in that: include: A sludge treatment cylinder (1) is used for preheating sludge. The bottom of the sludge treatment cylinder (1) is provided with four supporting legs (2). A sludge conveying cylinder (3) is fixedly installed inside the sludge treatment cylinder (1). A heating chamber is formed between the sludge treatment cylinder (1) and the sludge conveying cylinder (3). A heating pipe (4) is arranged in the heating chamber. The heating pipe (4) is wound around the outside of the sludge conveying cylinder (3). A sludge inlet (7) is arranged at the top of the sludge conveying cylinder (3). A sludge discharge pipe (10) is arranged at the lower right side of the sludge conveying cylinder (3). The sludge inlet (7) is located outside the sludge treatment cylinder (1). An air inlet (5) is arranged on the left side of the heating pipe (4), and an air outlet pipe (6) is arranged on the right side of the heating pipe (4). A conveying mechanism, installed inside the sludge conveying cylinder (3), for conveying the sludge; A flue gas treatment box (15) is located on the side of the sludge treatment cylinder (1), a partition (16) is provided inside the flue gas treatment box (15), a curved pipe (21) is connected to the partition (16), and the flue gas treatment box (15) is divided into a filtering area (17) and an adsorption area (18), and the bottom end of the air outlet pipe (6) extends to the flue gas treatment box (15) and is located in the filtering area (17); The smoke adsorption mechanism is installed in the adsorption area (18) and is used for adsorbing and filtering the smoke.

2. A papermaking sludge flue gas treatment system according to claim 1, characterized in that: The conveying mechanism comprises a conveying shaft (8), which is rotatably mounted inside the sludge conveying cylinder (3) via a bearing, and a spiral blade (9) is mounted on the outer side of the conveying shaft (8), and the spiral blade (9) is in contact with the inner wall of the sludge conveying cylinder (3).

3. A papermaking sludge flue gas treatment system according to claim 1, characterized in that: A servo motor (12) is installed on the outside of the sludge treatment cylinder (1), a driving gear (13) is installed on the output shaft of the servo motor (12), a passive gear (14) is installed on the outside of the transmission shaft (8), and the driving gear (13) is meshed with the passive gear (14).

4. A papermaking sludge flue gas treatment system according to claim 1, characterized in that: The left side of the flue gas treatment box (15) is connected to a liquid level scale tube (19), and the top of the flue gas treatment box (15) is provided with a liquid filling port (20), and the liquid filling port (20) is located inside the filtering area (17).

5. The papermaking sludge flue gas treatment system according to claim 1, characterized in that: The smoke adsorption mechanism comprises a rectangular box (22), a circular hole (23) is opened on the left side of the rectangular box (22), a filter screen (24) is arranged inside the rectangular box (22), activated carbon particles (26) are arranged on the inner side of the rectangular box (22), and the activated carbon particles (26) are located on the right side of the filter screen (24).

6. A papermaking sludge flue gas treatment system according to claim 5, characterized in that: A blocking net (25) is installed on the right side of the rectangular box (22), nuts (31) are fixedly installed on the bottom inner wall and the top inner wall of the rectangular box (22), and screws (32) are arranged between the blocking net (25) and the nuts (31).

7. A papermaking sludge flue gas treatment system according to claim 5, characterized in that: A sealing plug (30) is fixedly installed on the top of the rectangular box (22), a mounting plate (28) is fixedly installed on the top of the sealing plug (30), a mounting hole (29) is opened on the top of the flue gas treatment box (15), the sealing plug (30) is sealed and connected to the mounting hole (29), and a handle (39) is fixedly installed on the top of the mounting plate (28).

8. The papermaking sludge flue gas treatment system according to claim 1, characterized in that: Four fixing blocks (34) are fixedly mounted on the top of the flue gas treatment box (15), and four fixing grooves (33) are opened on the bottom of the mounting plate (28), and the four fixing blocks (34) are matched with the four fixing grooves (33).

9. A papermaking sludge flue gas treatment system according to claim 8, characterized in that: An elastic groove (35) is provided on the inner wall of the fixing groove (33), an elastic block (36) is slidably installed in the elastic groove (35), a triangular block (40) is fixedly installed on the outer side of the elastic block (36), a triangular groove (38) is provided on the fixing block (34), the triangular block (40) matches the triangular groove (38), and a spring (37) is installed between the elastic block (36) and the elastic groove (35).

10. The papermaking sludge flue gas treatment system according to claim 1, characterized in that: An exhaust pipe (27) is arranged on the top of the flue gas treatment box (15), and the bottom end of the exhaust pipe (27) is located in the adsorption area (18).

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