CN111023833A

CN111023833A - Slag crushing and dust-free waste heat utilization integrated device

Info

Publication number: CN111023833A
Application number: CN201911329343.1A
Authority: CN
Inventors: 王振光; 吕明哲
Original assignee: Zibo Huaqin Information Technology Service Co ltd
Current assignee: Shandong Longxing Environmental Protection Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-04-17
Anticipated expiration: 2039-12-20
Also published as: CN111023833B

Abstract

The invention relates to a slag crushing and dust-free waste heat utilization integrated device, and belongs to the field of environmental protection. Including columniform casing, the casing up end is for carrying the flitch, carries the flitch to recessed curved surface, carries the flitch top to set up the blanking mouth, and a plurality of heat exchange tubes are arranged to the axial in the casing, and the heat exchange tube runs through the upper and lower terminal surface of casing to the upper end of hua heat pipe and the upper surface parallel and level of carrying the flitch set up a plurality of extrusion balls on carrying the flitch, arrange a plurality of material poles of smashing perpendicularly on the extrusion ball, the diameter of material pole of smashing is less than the internal diameter of heat exchange tube. The furnace slag is crushed in an extruding and rolling mode, the crushed furnace slag enters the heat exchange tube to exchange heat with cold air, furnace dust cannot be taken away by air in the heat exchange process, the cleanness of heated air is guaranteed, the furnace slag is automatically discharged, and energy consumption and production cost are greatly reduced.

Description

Slag crushing and dust-free waste heat utilization integrated device

Technical Field

The invention relates to a slag crushing and dust-free waste heat utilization integrated device, and belongs to the field of environmental protection.

Background

The coal slag is waste slag discharged from industrial and civil boilers and other equipment by burning coal (mainly comprising coal-fired thermal power plants, chemical fertilizer plant gas making furnaces, civil boilers in northern areas and the like). Under the guidance of the national energy-saving and emission-reducing policy, each unit actively responds to the call, the equipment and the technology are updated, and the utilization of the coal waste heat is enhanced. The most commonly used mode at present is to exchange heat between the flue gas and the outside air through a heat exchanger so as to improve the heat energy utilization rate and reduce the heat loss, but the heat recovery technology for the slag is relatively less. The slag also contains a large amount of heat, and the temperature of the slag is higher than that of the flue gas, but the slag is irregular in shape, does not have fluid characteristics, and is inconvenient for heat energy recovery through a heat exchanger.

There are existing processes for heat recovery and for power generation by direct contact of water and air with slag. The two modes are simple, but a large amount of sewage can be generated in a water mode, especially, the slag contains a large amount of heavy metals, and the sewage is difficult to clean thoroughly; a large amount of ashes in the slag can be taken away through the mode of air, produce a large amount of waste gas, cause the damage to power generation facility to the ashes can be attached to the heat exchanger wall, reduce heat exchange efficiency. The temperature of the slag inner core is relatively high, but the two modes can only take away the temperature of the slag surface basically, and waste the residual heat of the inner core.

Crushing the slag by a crusher is generally used as a raw material for casting a building material, but crushing by a crusher not only increases the equipment cost but also increases the energy consumption.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: the utility model provides an integrative device of slag crushing and dustless waste heat utilization smashes the slag through the mode of extrusion and rolling, and the slag after smashing gets into heat exchange tube and cold air heat transfer, and the furnace dust can not taken away in the in-process air of heat exchange, guarantees by heated air's cleanness, and slag automatic discharge, greatly reduced energy consumption and manufacturing cost.

The invention relates to a slag crushing and dust-free waste heat utilization integrated device, which comprises a cylindrical shell, wherein the upper end surface of the shell is a material carrying plate, the material carrying plate is a concave curved surface, a blanking port is arranged above the material carrying plate, a plurality of heat exchange tubes are axially arranged in the shell, the heat exchange tubes penetrate through the upper end surface and the lower end surface of the shell, the upper ends of the heat exchange tubes are flush with the upper surface of the material carrying plate, a plurality of extrusion balls are arranged on the material carrying plate, a plurality of material tamping rods are vertically arranged on the extrusion balls, and the diameters of the material tamping rods are smaller than the;

the side wall of the shell is provided with an annular gap along the side wall, a baffle is coaxially arranged in the shell and is annular, the width of the baffle is larger than that of the gap, the gap is shielded by the baffle, the baffle is close to the inner wall of the shell, opposite sides of the baffle are respectively provided with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe penetrate through the baffle and are fixedly connected with the baffle, and the air inlet pipe and the air outlet pipe are fixedly arranged on the rack;

the opening at the lower end of the heat exchange tube is plugged by a reed, and only one end of the reed is fixed on the outer wall of the shell.

The principle and the process are as follows: slag falls on the material carrying plate from the blanking port, the shell rotates, the extrusion balls collide on the material carrying plate to extrude the slag into small blocks, the small blocks of slag are ground into particles or powder by the extrusion balls, the small blocks of slag move to the upper opening of the adjacent heat exchange tube in the ceaseless rotation process of the shell and fall into the heat exchange tube, cold air enters from the air inlet tube and is blown out from the air outlet tube after exchanging heat with the heat exchange tube. The gap on the shell provides a passing space for the air inlet pipe and the air outlet pipe, and the air inlet pipe and the air outlet pipe cannot influence the rotation of the shell in the rotation process of the shell. And the baffle is the annular, and its width is greater than the width of breach, and the baffle shelters from the breach, and baffle adjacent shells inner wall, and the baffle shelters from the breach all the time, avoids the air to blow out from the breach. On one hand, the self rotation of the shell enables the extrusion balls to extrude and roll the slag, and the slag can be distributed to the edge under the action of centrifugal force, so that the slag in each heat exchange tube is more uniform; on the other hand can make every heat exchange tube can both contact with cold wind for heat exchange efficiency is higher, and the air-out temperature is more stable, and the slag cooling rate in every heat exchange tube is unanimous almost, avoids some slag to cool off earlier but can not in time be discharged, and some slag have not been accomplished the heat transfer and just been discharged, has reduced the waste of heat energy. A plurality of material poles of smashing are arranged perpendicularly on the extrusion ball, and the diameter of material pole of smashing is less than the internal diameter of heat exchange tube, and at the extrusion ball roll in-process, the material pole of smashing on the extrusion ball can insert in the heat exchange tube and tamp the slag, and then makes slag and heat exchange tube inner wall in close contact with, improves the heat transfer effect. Meanwhile, as the slag is in close contact with the inner wall of the heat exchange pipe, the slag moves downwards when the material smashing rod smashes the material, and the inner wall of the heat exchange pipe can be rubbed, so that the influence on the heat exchange effect caused by the adhesion of the fly ash to the inner wall of the heat exchange pipe is avoided. When the heat exchange tube is filled, the spring leaf is forced to bend and a gap is reserved when the material is stamped by the gravity material stamping rod of the extrusion ball, slag falls from the gap, slag discharge is completed, and manual control is not needed.

And a ring gear is fixed on the lower part of the outer wall of the shell in the circumferential direction and is meshed with a driving gear, the driving gear is fixed on a rotating shaft of a motor, and the motor is fixed on an air inlet pipe. The motor rotates to drive the shell to rotate.

The track ring is coaxially fixed on the inner wall of the shell, the track ring is vertical to the inner wall of the shell and is arranged above the air inlet pipe and the air outlet pipe, the inner ends of the air inlet pipe and the air outlet pipe are provided with rolling wheels, and the wheel surfaces of the rolling wheels are abutted against the track ring. Therefore, the weight of the whole shell is pressed on the roller, and the roller rolls on the track ring when the shell rotates, so that the abrasion of other parts is reduced. The roller may be plural to prevent the housing from tilting.

Still install the isolation wheel on the interior end of air-supply line and air-out pipe, the isolation wheel is installed on the telescopic link, and the telescopic link is installed in the sleeve, and the sleeve is fixed on air-supply line and air-out pipe, sets up the spring in the sleeve, and the perpendicular shells inner wall of isolation wheel and its wheel face correspond shells inner wall. The lateral shift is inevitable to take place during the casing rotation, and the isolation wheel can contact shells inner wall and the spring can force the casing to reset, reduces the wearing and tearing of baffle and shells inner wall.

And a collecting tank is arranged below the shell and used for collecting the cooled and crushed slag for production of building materials.

The fan plates are uniformly distributed in the shell along the circumferential direction and are perpendicular to the air inlet and are obliquely arranged. The fan plate can block the airflow of the air inlet, so that the airflow is dispersed, the retention time of the air in the shell is increased, the heat exchange effect is improved, meanwhile, the effect of wind power driving can be achieved, certain power is provided to drive the shell to rotate, and the load of the motor is reduced.

And protective rods are uniformly distributed at the edge of the material carrying plate to prevent the extrusion balls from being thrown out.

Compared with the prior art, the invention has the beneficial effects that:

according to the integrated device for slag crushing and dust-free waste heat utilization, the notch is shielded by the baffle, the baffle is close to the inner wall of the shell, and the notch is always shielded by the baffle, so that air is prevented from being blown out of the notch. On one hand, the self rotation of the shell enables the extrusion balls to extrude and roll the slag, and the slag can be distributed to the edge under the action of centrifugal force, so that the slag in each heat exchange tube is more uniform; on the other hand can make every heat exchange tube can both contact with cold wind for heat exchange efficiency is higher, and the air-out temperature is more stable, and the slag cooling rate in every heat exchange tube is unanimous almost, avoids some slag to cool off earlier but can not in time be discharged, and some slag have not been accomplished the heat transfer and just been discharged, has reduced the waste of heat energy. A plurality of material poles of smashing are arranged perpendicularly on the extrusion ball, and the diameter of material pole of smashing is less than the internal diameter of heat exchange tube, and at the extrusion ball roll in-process, the material pole of smashing on the extrusion ball can insert in the heat exchange tube and tamp the slag, and then makes slag and heat exchange tube inner wall in close contact with, improves the heat transfer effect. Meanwhile, as the slag is in close contact with the inner wall of the heat exchange pipe, the slag moves downwards when the material smashing rod smashes the material, and the inner wall of the heat exchange pipe can be rubbed, so that the influence on the heat exchange effect caused by the adhesion of the fly ash to the inner wall of the heat exchange pipe is avoided. When the heat exchange tube is filled, the spring leaf is forced to bend and a gap is reserved when the material is stamped by the gravity material stamping rod of the extrusion ball, slag falls from the gap, slag discharge is completed, and manual control is not needed. The furnace slag is crushed in an extruding and rolling mode, the crushed furnace slag enters the heat exchange tube to exchange heat with cold air, furnace dust cannot be taken away by air in the heat exchange process, the cleanness of heated air is guaranteed, the furnace slag is automatically discharged, and energy consumption and production cost are greatly reduced.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of embodiment B-B of FIG. 1;

FIG. 3 is a partial enlarged view of the embodiment A shown in FIG. 1.

In the figure: 1. a blanking port; 2. extruding the ball; 3. a material smashing rod; 4. a heat exchange pipe; 5. a material carrying plate; 6. a housing; 7. an air inlet pipe; 8. an air outlet pipe; 9. a baffle plate; 10. a motor; 11. a driving gear; 12. a ring gear; 13. a reed; 14. collecting tank; 15. a frame; 16. a guard bar; 17. a fan plate; 18. an orbital ring; 19. an isolation wheel; 20. a notch; 21. a telescopic rod; 22. a spring; 23. a sleeve; 24. and a roller.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1-3, the integrated device for slag crushing and dust-free waste heat utilization comprises a cylindrical shell 6, wherein the upper end surface of the shell 6 is a material carrying plate 5, the material carrying plate 5 is a concave curved surface, a blanking port 1 is arranged above the material carrying plate 5, a plurality of heat exchange tubes 4 are axially arranged in the shell 6, the heat exchange tubes 4 penetrate through the upper end surface and the lower end surface of the shell 6, the upper ends of the heat exchange tubes are flush with the upper surface of the material carrying plate 5, a plurality of extrusion balls 2 are arranged on the material carrying plate 5, a plurality of material smashing rods 3 are vertically arranged on the extrusion balls 2, and the diameter of the material smashing rods 3 is smaller than the inner diameter of the heat exchange tubes;

an annular gap 20 is formed in the side wall of the shell 6 along the side wall, a baffle 9 is coaxially arranged in the shell 6, the baffle 9 is annular and has a width larger than that of the gap 20, the gap 20 is shielded by the baffle 9, the baffle 9 is close to the inner wall of the shell 6, an air inlet pipe 7 and an air outlet pipe 8 are respectively arranged on opposite sides of the baffle 9, the air inlet pipe 7 and the air outlet pipe 8 both penetrate through the baffle 9 and are fixedly connected with the baffle 9, and the air inlet pipe 7 and the air outlet pipe 8 are both fixedly arranged on the rack 15;

the lower end opening of the heat exchange tube 4 is sealed by a reed 13, and only one end of the reed 13 is fixed on the outer wall of the shell 6.

The principle and the process are as follows: slag falls on the material carrying plate 5 from the blanking port 1, the shell 6 rotates, the extrusion balls 2 collide on the material carrying plate 5 to extrude the slag into small blocks, the small blocks of slag are rolled into granules or powder by the extrusion balls 2, the small blocks of slag move to the upper opening of the adjacent heat exchange tube 4 in the ceaseless autorotation process of the shell 6 and fall into the heat exchange tube 4, cold air enters from the air inlet tube 7 and is blown out from the air outlet tube 8 after exchanging heat with the heat exchange tube 4. The gap 20 on the shell 6 provides a passing space for the air inlet pipe 7 and the air outlet pipe 8, and the rotation of the shell 6 cannot be influenced by the air inlet pipe 7 and the air outlet pipe 8 in the rotation process of the shell 6. The baffle 9 is annular, the width of the baffle 9 is larger than that of the notch 20, the notch 20 is shielded by the baffle 9, the baffle 9 is close to the inner wall of the shell 6, the notch 20 is shielded by the baffle 9 all the time, and air is prevented from being blown out of the notch 20. On one hand, the shell 6 rotates automatically, so that the slag is extruded and rolled by the extrusion balls 2, and the slag can be distributed to the edge under the action of centrifugal force, so that the slag in each heat exchange tube 4 is more uniform; on the other hand can make every heat exchange tube 4 can both contact with cold wind for heat exchange efficiency is higher, and the air-out temperature is more stable, and the slag cooling rate in every heat exchange tube 4 is unanimous almost, avoids some slag to cool off earlier but can not in time be discharged, and some slag have not been accomplished the heat transfer and just been discharged, has reduced the waste of heat energy. A plurality of material poles 3 of smashing are arranged perpendicularly on the squeeze ball 2, and the diameter of smashing material pole 3 is less than the internal diameter of heat exchange tube 4, and at the squeeze ball 2 roll in-process, smash material pole 3 on the squeeze ball 2 and can insert in the heat exchange tube 4 and tamp the slag, and then make slag and 4 inner walls in close contact with of heat exchange tube, improve the heat transfer effect. Meanwhile, as the slag is in close contact with the inner wall of the heat exchange tube 4, the slag moves downwards when the material smashing rod 3 smashes the material, so that the inner wall of the heat exchange tube 4 can be rubbed, and the influence on the heat exchange effect caused by the adhesion of the fly ash to the inner wall of the heat exchange tube 4 is avoided. When the heat exchange tube 4 is filled, the spring 13 is forced to bend and leave a gap when the material is pounded by the gravity material pounding rod 3 of the extrusion ball 2, slag falls from the gap, slag discharge is completed, and manual control is not needed.

A ring gear 12 is circumferentially fixed on the lower portion of the outer wall of the shell 6, the ring gear 12 is meshed with a driving gear 11, the driving gear 11 is fixed on a rotating shaft of a motor 10, and the motor 10 is fixed on the air inlet pipe 7. The motor 10 rotates to drive the housing 6 to rotate.

A track ring 18 is coaxially fixed on the inner wall of the shell 6, the track ring 18 is vertical to the inner wall of the shell 6 and is arranged above the air inlet pipe 7 and the air outlet pipe 8, the inner ends of the air inlet pipe 7 and the air outlet pipe 8 are provided with rolling wheels 24, and the wheel surfaces of the rolling wheels 24 are abutted against the track ring 18. The weight of the housing 6 as a whole is thus pressed against the rollers 24, and the rollers 24 roll on the orbital ring 18 when the housing 6 is rotated, reducing wear on other components. The roller 24 may be plural to avoid the housing 6 from being tilted.

The inner ends of the air inlet pipe 7 and the air outlet pipe 8 are also provided with isolation wheels 19, the isolation wheels 19 are arranged on an expansion rod 21, the expansion rod 21 is arranged in a sleeve 23, the sleeve 23 is fixed on the air inlet pipe 7 and the air outlet pipe 8, a spring 22 is arranged in the sleeve 23, and the isolation wheels 19 are vertical to the inner wall of the shell 6 and the wheel surfaces of the isolation wheels correspond to the inner wall of the shell 6. When the shell 6 rotates, the lateral displacement is inevitable, the isolation wheel 19 can contact the inner wall of the shell 6 and the spring 22 can force the shell 6 to reset, and the abrasion of the baffle 9 and the inner wall of the shell 6 is reduced.

And a collecting tank 14 is arranged below the shell 6 and used for collecting cooled and crushed slag for production of building materials.

The inner circumference of the shell 6 is evenly distributed with fan plates 17, and the fan plates 17 are vertical to the air inlet and are obliquely arranged. The fan plate 17 can block the air flow of the air inlet, so that the air flow is dispersed, the retention time of the air in the shell 6 is increased, the heat exchange effect is improved, meanwhile, the effect of wind power driving can be achieved, certain power is provided to drive the shell 6 to rotate, and the load of the motor 10 is reduced.

Guard bars 16 are uniformly distributed at the edge of the material carrying plate 5 to prevent the extrusion balls 2 from being thrown out.

Claims

1. The utility model provides a slag is smashed and integrative device of no dust waste heat utilization which characterized in that: the feeding device comprises a cylindrical shell (6), wherein the upper end surface of the shell (6) is provided with a material carrying plate (5), the material carrying plate (5) is a concave curved surface, a blanking port (1) is formed above the material carrying plate (5), a plurality of heat exchange tubes (4) are axially arranged in the shell (6), the heat exchange tubes (4) penetrate through the upper end surface and the lower end surface of the shell (6), the upper ends of the heat exchange tubes are flush with the upper surface of the material carrying plate (5), a plurality of extrusion balls (2) are arranged on the material carrying plate (5), a plurality of material smashing rods (3) are vertically arranged on the extrusion balls (2), and the diameter of the material smashing rods (3) is smaller than the inner diameter of the;

open annular breach (20) along the lateral wall on casing (6) lateral wall, coaxial setting baffle (9) in casing (6), baffle (9) are the annular, its width is greater than the width of breach (20), baffle (9) shelter from breach (20), baffle (9) are adjacent casing (6) inner wall, the opposition side sets up air-supply line (7) and air-out pipe (8) respectively on baffle (9), air-supply line (7) and air-out pipe (8) all pass baffle (9) and with baffle (9) fixed connection, all fixed mounting is on frame (15) on air-supply line (7) and air-out pipe (8);

the lower end opening of the heat exchange tube (4) is plugged by a reed (13), and only one end of the reed (13) is fixed on the outer wall of the shell (6).

2. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: a ring gear (12) is circumferentially fixed on the lower portion of the outer wall of the shell (6), the ring gear (12) is meshed with a driving gear (11), the driving gear (11) is fixed on a rotating shaft of a motor (10), and the motor (10) is fixed on an air inlet pipe (7).

3. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: the track ring (18) is coaxially fixed on the inner wall of the shell (6), the track ring (18) is vertical to the inner wall of the shell (6) and is arranged above the air inlet pipe (7) and the air outlet pipe (8), the inner ends of the air inlet pipe (7) and the air outlet pipe (8) are provided with rolling wheels (24), and the wheel surface of each rolling wheel (24) is abutted against the track ring (18).

4. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: still install isolation wheel (19) on air-supply line (7) and play tuber pipe (8) inner end, isolation wheel (19) are installed on telescopic link (21), and telescopic link (21) are installed in sleeve (23), and sleeve (23) are fixed on air-supply line (7) and play tuber pipe (8), set up spring (22) in sleeve (23), and isolation wheel (19) perpendicular casing (6) inner wall and its wheel face correspond casing (6) inner wall.

5. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: a collecting groove (14) is arranged below the shell (6).

6. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: the inner circumference of the shell (6) is evenly distributed with fan plates (17), and the fan plates (17) are vertical to the air inlet and are obliquely arranged.

7. The integrated device for slag crushing and dust-free waste heat utilization according to claim 1, characterized in that: guard rods (16) are uniformly distributed on the edge of the material carrying plate (5).