CN114192128B - Active carbon regeneration equipment with waste heat boiler - Google Patents

Abstract

The invention relates to the technical field of activated carbon processing. The purpose is to provide an active carbon regeneration device with a waste heat boiler, which comprises a boiler body, wherein a secondary combustion chamber is arranged outside the boiler body, and a tail gas outlet is communicated with the waste heat boiler through a tail gas conveying pipe; the waste heat boiler comprises a boiler shell, wherein two transverse plates are arranged in the boiler shell, and the interior of the boiler shell is divided into a washing cavity, a water storage cavity and a combustion cavity from top to bottom by the transverse plates; one side of the combustion chamber is provided with a three-stage burner, and the other side of the combustion chamber is connected with a tail gas conveying pipe. According to the invention, waste heat recovery can be realized from the tail gas generated by the combustion treatment of the secondary combustion chamber rapidly, the heat energy efficiency is improved, and meanwhile, a large amount of solid dust, soluble substances and other harmful substances in the tail gas can be removed in a water washing mode, so that the cleanliness of the tail gas emission is ensured.

Description

Active carbon regeneration equipment with waste heat boiler

Technical Field

The invention relates to the technical field of activated carbon processing, in particular to activated carbon regeneration equipment with a waste heat boiler.

Background

The active carbon thermal regeneration method is an active carbon regeneration method which sequentially carries out drying, carbonization and activation treatment on waste active carbon at high temperature so as to recover the adsorption performance of the active carbon; the method has the advantages of high regeneration efficiency, short time, no selectivity to adsorbate and the like, and is the most widely applied active carbon regeneration method at present. Common active carbon thermal regeneration equipment comprises a rotary furnace, a movable layer activation furnace, a multi-section rake furnace and the like; the multi-section rake type furnace is also called as a multi-hearth furnace and generally comprises a furnace body, wherein a plurality of furnace plates are arranged in the furnace body from top to bottom, so that a multi-section hearth is formed, each section of hearth can be independently matched with a burner, an air injector, a steam injector and the like, independent furnace control is realized, and a local independent reaction environment is established; the material enters from the feeding hole at the top, and the reaction environment can be precisely controlled when passing through a series of hearths, so that the method is particularly suitable for preparing high-quality activated carbon. The inventor improves the following problems in the application process on the basis of the existing multi-hearth furnace so as to improve the comprehensive performance of the multi-hearth furnace for activated carbon regeneration in the actual application process.

1. In the application process of the existing multi-hearth furnace, when materials are propelled, the rotating shafts arranged in the centers of the furnace bodies are mainly used for driving the rake arms in the corresponding hearths to rotate, the rake arms drive the rake blades arranged on the rake arms to move, the materials are further pushed on the furnace plates from inside to outside or from outside to inside, blanking ports of two adjacent layers of furnace plates are respectively arranged in the centers and the outer edges, and the residence time of the materials in the hearths can be controlled by controlling the rotating speeds of the rotating shafts. However, the method can only realize the control of the overall pushing speed by controlling the rotating speed; but cannot independently control the pushing speed of a certain hearth, theoretically, the pushing distance of each revolution can be changed by changing the angle of the rake blades, so that the pushing speed can be controlled. However, since the rotary shaft is in a revolving state and the furnace body is in a high-temperature working condition, it is extremely difficult to adjust the angle of the rake blade by using an air cylinder, a motor, or the like provided on the rake arm. Therefore, the realization of the sectional adjustment of the pushing speed of the multi-hearth furnace is still a great difficulty in the field up to the present;

2. After the multi-hearth furnace finishes the regeneration and activation of the activated carbon, the activated carbon also needs to be cooled due to higher material temperature so as to shorten the cooling time and facilitate the subsequent processes of pelletization, packaging and the like; the existing multi-hearth furnace adopts a mode that a roller with a cooling water jacket is connected behind a discharge hole of the multi-hearth furnace, heat in the material is taken away by heat exchange between cooling water and the material in the process of conveying the material along the roller, but the heat dissipation effect of the mode is to be improved, a long roller is needed, and a large amount of space is needed temporarily.

3. Although the multi-hearth furnace is cleaner and more environment-friendly than the traditional rotary furnace and other activated carbon regeneration furnaces, a great amount of smoke is generated due to the characteristic of the activated carbon thermal regeneration method, and the smoke contains a great amount of combustible components and unburned components; the purification treatment of the fumes is generally achieved in the art by post-combustion of these fumes; the existing secondary combustion chamber is usually an independent furnace chamber arranged at one side of a hearth, and heat generated by combustion cannot be fully utilized in the secondary combustion process. Therefore, if the furnace can be fully applied, on one hand, the overall heat energy efficiency of the multi-hearth furnace can be improved, and on the other hand, the cleaning performance and the environmental protection performance of the emission can be further promoted.

4. The flue gas discharged by the multi-hearth furnace can generate a large amount of tail gas after being combusted by the secondary combustion chamber, the tail gas contains a certain amount of impurities such as smoke dust, the tail gas is generally subjected to dust removal treatment in a spraying manner in the traditional mode, but the simple spraying water flushing mode is high in water consumption and the obtained dust removal effect is not ideal. In addition, the tail gas also contains certain waste heat, so that if the waste heat can be recycled in a certain mode, the overall heat efficiency of the multi-hearth furnace is greatly improved, and the positive effects of energy conservation, emission reduction, environmental protection and economy are achieved.

The multi-hearth furnace improves the whole structure of the existing multi-hearth furnace from the aspects, and achieves very remarkable and outstanding effects on the aim of improving the comprehensive performance of the multi-hearth furnace.

Disclosure of Invention

The invention aims to provide active carbon regeneration equipment with a waste heat boiler, which can improve the tail gas treatment cleanliness and efficiently recover waste heat.

In order to achieve the aim of the invention, the invention adopts the following technical scheme: the active carbon regeneration equipment with the waste heat boiler comprises a furnace body, wherein a feed inlet and a smoke outlet are arranged at the top of the furnace body, and a discharge outlet is arranged at the lower part of the furnace body; a plurality of layers of furnace trays are uniformly arranged in the furnace body along the vertical direction, the furnace trays divide the furnace body into a plurality of sections of furnace chambers, each furnace tray comprises a first furnace tray and a second furnace tray, and the first furnace trays and the second furnace trays are distributed in an up-down staggered manner; the center of the first furnace plate is provided with a first blanking port, and the position, close to the edge, of the second furnace plate is provided with a second blanking port; a feeding propeller for pushing materials from the tray body of the tray towards the first blanking port and the second blanking port is also arranged in the furnace body;

The furnace body is also provided with a secondary combustion chamber, one side of the secondary combustion chamber is also provided with a cyclone separator, the inlet end of the cyclone separator is communicated with a smoke outlet of the furnace body, the gas outlet end of the cyclone separator is communicated with the secondary combustor in the secondary combustion chamber, one side of the top of the secondary combustion chamber is also provided with a tail gas outlet, and the tail gas outlet is communicated with a waste heat boiler through a tail gas conveying pipe;

The waste heat boiler comprises a boiler shell, wherein two transverse plates are arranged in the boiler shell, and the interior of the boiler shell is divided into a washing cavity, a water storage cavity and a combustion cavity from top to bottom by the transverse plates;

One side of the combustion cavity is provided with a three-stage burner, and the other side of the combustion cavity is connected with a tail gas conveying pipe;

A plurality of vertical heat exchange pipes are uniformly arranged in the water storage cavity, and two ends of each heat exchange pipe are respectively communicated with the water washing cavity and the combustion cavity; the side wall of the water storage cavity is provided with a water supplementing port and a water discharging port;

A bent pipe bent downwards is arranged at a position opposite to the heat exchange pipe in the washing cavity, the head end of the bent pipe is communicated with the upper end of the heat exchange pipe, and a tail end exhaust pipe is arranged on the top surface of the washing cavity; the water washing cavity is filled with water washing liquid, the liquid level of the water washing liquid is lower than the highest section of the bent pipe, and the tail end of the bent pipe stretches into the water washing liquid.

Preferably, a plurality of annular heat exchange edges are uniformly arranged on the side wall of the heat exchange tube along the length direction of the heat exchange tube.

Preferably, the size of the bent pipe is smaller than that of the heat exchange pipe.

Preferably, the tail section of the elbow is also provided with an air outlet head, the air outlet head is hollow spherical, the inside of the air outlet head is communicated with the elbow, and a plurality of air outlet micropores are uniformly formed in the side wall of the air outlet head.

Preferably, the water washing cavity is internally provided with a transverse air distribution plate, and the air distribution plate is matched with the water washing cavity in a direction and fixedly arranged in the water washing cavity; a plurality of gas distribution micropores are uniformly formed in the gas distribution plate, and the gas distribution plate is immersed in the water washing liquid and is higher than the gas outlet head.

Preferably, the feeding propeller comprises a vertical propelling main shaft arranged in the center of the furnace body, and the lower end of the propelling main shaft extends out of the furnace body and is in transmission connection with a main shaft driver; a pushing rake is arranged on the pushing main shaft corresponding to the position of each layer of furnace plate; the pushing rake comprises a connecting sleeve, a rake arm and rake blades, wherein the connecting sleeve is sleeved outside the pushing main shaft and is fixedly connected with the pushing main shaft; the rake arms are fixedly arranged on the side wall of the connecting sleeve and extend along the radial direction of the connecting sleeve; one side of the rake arm is provided with a plurality of mounting plates extending towards one side of the rake arm, and the overhanging ends of the mounting plates are provided with hinging seats; each mounting plate is provided with a harrow blade, the projection of each harrow blade and each mounting plate in the vertical direction is obliquely intersected, and the oblique direction is matched with the material pushing direction; the harrow blades are hinged with the hinge seat, and the hinge center extends vertically; the lower edge of the harrow blade is contacted with the plate body of the furnace plate; the pushing harrow further comprises a blade angle adjuster, and the harrow blade can rotate around the hinge center under the drive of the blade angle adjuster.

Preferably, the top of the rake arm is provided with a long groove extending along the length direction of the rake arm, and the blade angle adjuster comprises an adjusting rod which is arranged in the long groove and can slide along the length direction of the long groove; a plurality of partition boards are uniformly distributed in the long groove along the length direction of the long groove, rod holes matched with the adjusting rods are formed in the partition boards, and the adjusting rods are arranged in the rod holes in a penetrating mode; the upper surface of the mounting plate is provided with a short groove extending along the length direction of the mounting plate, a short rod which can move along the width direction of the short groove and extends along the length direction of the short groove is arranged in the short groove, and the short rod is fixedly connected with the adjusting rod; the short rod is provided with a pin hole extending along the length direction of the short rod, one end of the harrow blade, which is close to the short rod, is provided with a transmission pin matched with the pin hole, and the transmission pin is arranged in the pin hole in a penetrating way and forms sliding fit with the pin hole; the blade angle adjuster further comprises a driving mechanism capable of driving the adjusting rod to move along the length direction of the long groove.

Preferably, the propelling main shaft is a hollow shaft, the driving mechanism comprises a vertical driving screw rod arranged at the center of the propelling main shaft, a rotating disc is arranged at the center of the inner surface of the lower end of the propelling main shaft, and a connecting seat is arranged at the center of the upper section of the rotating disc; the lower end of the driving screw rod is arranged in the connecting seat in a penetrating way and forms a running fit with the connecting seat, and the upper end of the driving screw rod extends out of the propelling main shaft and is in transmission connection with an adjusting motor fixedly arranged at the top of the furnace body; the outer side of the driving screw rod is uniformly provided with a plurality of vertical guide rods, the lower ends of the guide rods are fixedly connected with the upper section of the connecting seat, and the upper ends of the guide rods are fixedly connected with a bracket fixedly arranged at the top of the furnace body;

the driving mechanism further comprises a plurality of driving heads which are arranged in the propelling main shaft corresponding to the number of the propelling rakes, and the peripheral surface of each driving head comprises a section of conical surface; the driving sleeve is arranged outside the guide rod and the driving screw rod, and forms sliding fit with the guide rod and forms threaded fit with the driving screw rod;

the blade angle adjuster comprises a blade angle adjuster, wherein a plurality of baffle plates are fixedly arranged on adjusting rods of the blade angle adjuster, return springs are sleeved outside the adjusting rods between the baffle plates and the baffle plates, two ends of each return spring respectively lean against the baffle plates and the baffle plates, the inner ends of the adjusting rods of the blade angle adjuster extend into the main propulsion shaft, and the inner ends of the adjusting rods can be driven to be pressed against the conical surface of a driving head by the return springs.

Preferably, the driving head comprises a head body and a central block, wherein the upper part of the head body is cylindrical, the lower part of the head body is conical, a round hole matched with the central block is formed in the center of the head body, and the central block is clamped in the round hole and forms a running fit with the round hole; the center block is provided with a threaded hole, and the driving screw rod is arranged in the threaded hole in a penetrating way; the head body is provided with a guide hole, and the guide rod is arranged in the guide hole in a penetrating way; the periphery of the round hole is also provided with a mounting groove, an electromagnetic valve rod is arranged in the mounting groove, and the output end of the electromagnetic valve rod is provided with a locking block; the head body and the center block can be locked or unlocked through the locking block under the drive of the electromagnetic valve rod; the upper end and the lower end of the center block are provided with annular edges, and the center block is arranged outside the head body through the annular edges in a clamping way.

Preferably, the peripheral surface of the central block is provided with an annular groove, and the cross section of the annular groove is in a transverse T shape; the locking block is positioned in the annular groove, and the length of the locking block is matched with the height of the annular groove; the surface of the locking block facing the electromagnetic valve rod is provided with a first locking tooth, and the inner groove surface of the annular groove opposite to the first locking tooth is annularly provided with a second locking tooth.

The beneficial effects of the invention are concentrated in that: waste heat recovery can be realized from the tail gas that the combustion treatment of second grade combustion chamber produced fast, has improved thermal efficiency, simultaneously can get rid of a large amount of solid dust, soluble substance and other harmful substance in the tail gas through the form of washing, guarantees the cleanliness of tail gas emission. Specifically, the secondary combustion is carried out on the flue gas exhausted from the furnace body through the secondary burner in the secondary combustion chamber, and the tail gas generated by the combustion is conveyed into the combustion chamber of the waste heat boiler through the tail gas conveying pipe. In the combustion chamber of the waste heat boiler, high-temperature tail gas enters the heat exchange tube, and heat exchange is carried out between the heat exchange tube and water stored in the water storage chamber, so that heat energy recovery is realized. And then the tail gas enters into the washing liquid through the bent pipe, and is washed in the washing liquid, so that harmful substances in the tail gas are removed, and finally the tail gas is discharged through the tail end exhaust pipe. When combustible substances are also present in the tail gas exhausted by the secondary combustion chamber, the tertiary burner can be started, and the tertiary burner can ignite the combustible substances to promote the combustible substances in the tail gas to burn out; further ensuring the safety and cleanliness of the discharge. The invention has high heat recovery efficiency to the tail gas and good cleaning effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a top view of the first furnace tray;

FIG. 3 is a top view of a second furnace tray;

FIG. 4 is a schematic view of the structure of the propulsion spindle;

fig. 5 is a schematic top view of a push rake;

FIG. 6 is an enlarged view of portion A of FIG. 4;

FIG. 7 is an enlarged view of portion B of FIG. 5;

FIG. 8 is a schematic view of the structure of the rake blade;

FIG. 9 is a C-C view of the structure shown in FIG. 8;

FIG. 10 is a schematic view of the mounting of the tray in a top view;

FIG. 11 is a bottom view of the tray;

FIG. 12 is a top view of a cooling tube;

FIG. 13 is a schematic view of the installation of a secondary combustion chamber;

FIG. 14 is an enlarged view of portion D of FIG. 1;

fig. 15 is a schematic structural view of a waste heat boiler;

Fig. 16 is a schematic view of the structure of the air outlet head.

Detailed Description

In order to provide a more complete description of the general principles and efficacy of the present invention, specific embodiments will be described in detail below, starting from the four general disadvantages of the prior art multi-hearth furnaces set forth in the background section, with reference to the drawings.

When the invention is innovatively modified for the multi-hearth furnace, the invention mainly starts from the following directions:

1. The propulsion speed of the materials in the multi-hearth furnace is controlled;

2. the cooling control aspect of the multi-hearth furnace body to the materials during discharging;

3. Secondary combustion treatment of high-temperature flue gas exhausted by a multi-hearth furnace body;

4. and waste heat recovery of tail gas discharged from the multi-hearth secondary combustion chamber.

As shown in fig. 1-16, the active carbon regeneration equipment with the waste heat boiler comprises a furnace body 1, wherein the main body of the furnace body can be made of steel, brick or steel-brick mixture so as to meet the normal use requirement of the furnace body. The furnace body is the same as the traditional furnace body, the top of the furnace body 1 is provided with a feed inlet 2 and a smoke outlet 3, the lower part of the furnace body 1 is provided with a discharge outlet 4, and the feed inlet 2 is used for introducing materials and can be generally in butt joint with a discharge end of a lifting machine so as to meet the requirement of automatic feeding; the smoke outlet 3 is used for discharging high-temperature smoke and is used for being connected with subsequent high-temperature smoke treatment equipment, such as a cyclone separator and/or a cloth belt dust remover and/or a secondary combustion chamber which are sequentially connected, and the like, and is arranged according to specific treatment requirements. The discharge port 4 is used for guiding out materials.

According to the classical split-hearth design of the traditional multi-hearth furnace, as shown in fig. 1, a plurality of layers of furnace plates are vertically and uniformly arranged inside the furnace body 1, and the furnace plates divide the inside of the furnace body 1 into a plurality of sections of furnace chambers. In fig. 1, it can be seen that the invention is provided with 6 trays and that 6 furnace chambers are built in the furnace body 1. Of course, it can also be increased or decreased correspondingly according to the actual activated carbon regeneration needs. In the 6-section furnace chamber, the first two sections are used as drying sections, the middle two sections are used as carbonization sections, and the last two sections are used as activation sections.

In order to facilitate the progressive pushing of the material in each hearth, the trays include a first tray 5 and a second tray 6 as shown in fig. 2 and 3, the first tray 5 and the second tray 6 being staggered up and down. I.e. a first grate 5 and a floor grate 6, are arranged alternately. The center of the first furnace plate 5 is provided with a first blanking port 7, and the position of the second furnace plate 6 close to the edge is provided with a second blanking port 8, so that a step blanking mode combining center blanking and edge blanking is formed. The furnace body 1 is also internally provided with a feeding propeller for pushing materials from the plate body of the furnace plate to the first blanking port 7 and the second blanking port 8.

From the aspect of the control of the advancing speed of the materials in the multi-hearth furnace:

The first difference between the present invention and the conventional multi-hearth furnace is that the feed pusher is improved, as shown in fig. 1, the feed pusher comprises a vertical pushing main shaft 9 arranged at the center of the furnace body 1, and the lower end of the pushing main shaft 9 extends out of the furnace body 1 and is in transmission connection with a main shaft driver 10. A pushing rake 11 is arranged on the pushing main shaft 9 corresponding to each layer of furnace plate. The pushing main shaft 9 is driven by the main shaft driver 10 to rotate in the hearth and drive the pushing rakes 11 to rotate so as to push the materials on the hearth, and each hearth can be provided with one pushing rake 11 or a plurality of pushing rakes 11.

As shown in fig. 5, the pushing rake 11 includes a connecting sleeve 12, a rake arm 13 and a rake blade 14, and the connecting sleeve 12 is sleeved outside the pushing main shaft 9 and is fixedly connected with the pushing main shaft 9. The rake arm 13 is fixedly arranged on the side wall of the connecting sleeve 12, extends along the radial direction of the connecting sleeve 12 and moves under the drive of the propulsion main shaft 9. The biggest difference is that one side of the rake arm 13 is provided with a plurality of mounting plates 15 extending towards one side of the rake arm 13, and the overhanging ends of the mounting plates 15 are provided with hinging seats 16. Each mounting plate 15 is provided with a rake blade 14, the projections of the rake blades 14 and the mounting plates 15 in the vertical direction are obliquely intersected, and the oblique direction is matched with the pushing direction of the materials.

That is, the inclination direction of the rake blades 14 is determined according to the pushing direction, and when the first tray 5 needs to be pushed toward the first blanking port 7, the direction is as shown in fig. 2. When the second tray 6 needs to be pushed towards the second blanking port 8, the direction of the rake blade 14 is as shown in fig. 3. In a conventional multi-hearth furnace, the adjustment of the pushing speed can be achieved by changing the rotational speed of the pushing spindle 9. However, this way of adjusting the pushing speed is too single, and because the pushing spindle 9 itself is heavy, it is practically unsuitable for too fast a rotation speed, and thus the adjustment margin is narrow, and the adjustment flexibility is poor.

For this purpose, as shown in connection with fig. 5 and 7, the rake blades 14 according to the invention are hinged to a hinge seat 16, with the hinge center extending vertically, the lower edges of the rake blades 14 being in contact with the plate body of the oven plate. That is, the rake blade 14 is rotatable, and the angle can be adjusted by the rotation thereof. Therefore, the invention combines the adjustment of the angle of the harrow blades 14 and the adjustment of the rotation speed of the propulsion main shaft 9, so that the adjustment has larger margin and is flexible to use. The pushing rake 11 further comprises a blade angle adjuster, the rake blades 14 can rotate around the hinge center under the drive of the blade angle adjuster, and the blade angle adjuster can drive the rake blades 14 on the same rake arm 13 to synchronously adjust the angle.

The rake blade 14 according to the present invention may be a conventional rectangular rake blade 14, but in order to improve the overall structural strength, it may also be preferable that, as shown in fig. 8 and 9, the rake blade 14 includes a blade body 44, a top sheet 45 extending along the length direction of the blade body 44 is welded to the top of the blade body 44, one end of the top sheet 45 near the rake arm 13 is bent to form a bending section 46, and the driving pin 23 is fixedly disposed on the top of the bending section 46. Two reinforcing sheets 47 are further provided on both sides of the upper portion of the blade body 44. The blade body 44 and the reinforcing sheet 47 are also provided with a U-shaped clamp 48, and the U-shaped clamp 48, the blade body 44 and the reinforcing sheet 47 are locked by a short bolt 49. The U-shaped clamp 48 is provided with a connecting arm 50 near one end of the rake arm 13, and the connecting arm 50 is provided with a hinge pin 51 and is connected with the hinge seat 16 through the hinge pin 51. The reinforcing sheet 47 and the U-shaped clip 48 can form a reinforcing support for the blade body 44 to ensure its structural strength and prevent it from deforming during pushing of the material. In addition, as shown in fig. 8, since a channel is formed on the tray after the rake blade 14 pushes the material, the contact surface between the material and the tray is greatly reduced to reduce the overall heat efficiency, for this purpose, an extension piece 52 is disposed at the end of the blade body 44 of the square blade away from the connecting arm 50, and a refining gap 53 is formed between the bottom of the extension piece 52 and the blade body 44. After the pushing of the material by the blade body 44 is completed, the material can be leveled by the extension piece 52 on the premise of conforming to the pushing direction. In addition, in order to further enhance the strength of the top sheet 45, the top of the top sheet 45 is provided with a reinforcing ridge 54, the reinforcing ridge 54 is welded with the top sheet 45, and the reinforcing ridge 54, the top sheet 45 and the blade body 44 together form a cross-shaped structure.

The invention abandons the mode of fixing the harrow blades 14 on the harrow arms 13 in the traditional mode, but the harrow blades 14 are hinged on the harrow arms 13, the main shaft driver 10 drives the propelling main shaft 9 to rotate, and the propelling main shaft 9 drives the harrow arms 13 to rotate, so that the harrow blades 14 arranged on the harrow blades are driven to move along with the harrow arms 13. Because the harrow blades 14 are hinged on the harrow arms 13, the invention can change the angle of the harrow blades 14 through the blade angle regulator, thereby adjusting the pushing distance of each harrow blade 14 to the materials under one revolution, and further realizing the adjustment of the material stroke. The invention has wider adjustment margin and more flexible adjustment by combining the adjustment of the rotation speed of the propulsion main shaft 9, and can meet the requirement of higher control precision requirement on the regeneration environment in the existing active carbon production process.

The blade angle adjuster of the present invention has a more specific structure, as shown in fig. 5, in which a long groove 17 extending along the length direction of the rake arm 13 is preferably provided at the top of the rake arm 13, and the blade angle adjuster includes an adjusting rod 18 disposed in the long groove 17 and capable of sliding along the length direction of the long groove 17, and the rake blade 14 is driven to perform angle adjustment by sliding the adjusting rod 18 in the long groove 17. A plurality of partition plates 19 are uniformly distributed in the long groove 17 along the length direction of the long groove 17, rod holes matched with the adjusting rods 18 are formed in the partition plates 19, and the adjusting rods 18 penetrate through the rod holes to realize stable sliding.

As shown in fig. 7, a short groove 20 extending along the length direction of the mounting plate 15 is provided on the upper surface of the mounting plate 15, a short rod 21 extending along the length direction of the short groove 20 and capable of moving along the width direction of the short groove 20 is provided in the short groove 20, and the short rod 21 is fixedly connected with the adjusting rod 18. The short rod 21 is provided with a pin hole 22 extending along the length direction of the short rod 21, one end of the rake blade 14, which is close to the short rod 21, is provided with a transmission pin 23 matched with the pin hole 22, and the transmission pin 23 penetrates through the pin hole 22 and forms sliding fit with the pin hole 22. That is, the adjusting rod 18 is utilized to drive the short rod 21 to act, the short rod 21 drives the transmission pin 23 on the rake blade 14 to act by the pin hole 22, and the movable rake blade 14 can rotate around the hinge center. Therefore, the blade angle adjuster of the present invention can finally realize the angular driving of the rake blade 14 by driving the adjusting lever 18. The blade angle adjuster further includes a driving mechanism capable of driving the adjustment lever 18 to move in the longitudinal direction of the elongated slot 17.

The driving mechanism has more specific structures, for example, the driving mechanism can be a linear motor, a linear hydraulic push rod and the like, but considering that the propelling main shaft 9 is a rotary part, in order to facilitate the arrangement of pipelines such as a power line, an oil way and the like, and considering that the height Wen Elie inside the furnace body 1 is disclosed, the power supply source part is preferably transferred to the outside of the furnace body, so that the driving mechanism can also be better, as shown in fig. 4, the propelling main shaft 9 is a hollow shaft, the driving mechanism comprises a vertical driving screw rod 24 arranged at the center of the propelling main shaft 9, a rotating disc 25 is arranged at the center of the inner surface of the lower end of the propelling main shaft 9, and a connecting seat 26 is arranged at the center of the upper section of the rotating disc 25. The lower end of the driving screw rod 24 is arranged in the connecting seat 26 in a penetrating way and forms a running fit with the connecting seat 26, and the upper end of the driving screw rod 24 extends out of the propelling main shaft 9 and is in transmission connection with the adjusting motor 27 fixedly arranged at the top of the furnace body 1. The outside evenly distributed of drive lead screw 24 has a plurality of vertical guide bars 28, the lower extreme of guide bar 28 and the upper segment rigid coupling of connecting seat 26, the upper end and the fixed bracket 29 fixed connection that sets up at furnace body 1 top of guide bar 28. The connecting seat 26 is used as a mounting base of the lower end of the driving screw 24, and can ensure the stable movement of the driving screw 24. The rotating disc 25 is used as an integral installation foundation of the lower ends of the driving screw 24 and the guide rod 28, and can ensure that the driving screw 24, the guide rod 28 and other parts are not interfered in the rotating process of the main propulsion shaft 9.

The invention adopts a driving mode of a screw-nut-like pair, and the driving mechanism also comprises a plurality of driving heads 30 which are arranged in the propelling main shaft 9 corresponding to the number of the propelling rakes 11, as shown in fig. 4, and for clarity of illustration, the invention is to show one of the driving heads 30, and in fact, 6 driving heads 30 are arranged according to the number of hearths. The peripheral surface of the driving head 30 comprises a conical surface. The driving head 30 is sleeved outside the guide rod 28 and the driving screw 24, and forms sliding fit with the guide rod 28 and forms threaded fit with the driving screw 24. The driving head 30 is driven by the driving screw 24, and can adjust the position along the guide rod 28 in the numerical direction, so that the driving head 30 drives the adjusting rod 18 to move.

As shown in fig. 5 and 7, a plurality of check rings 31 are fixedly arranged on the adjusting rod 18 of the blade angle adjuster corresponding to the number of the partition plates 19, a return spring 32 is sleeved outside the adjusting rod 18 between the check rings 31 and the partition plates 19, and the partition plates 19 at the end parts of the rake arms 13 are directly served as end surfaces thereof. The two ends of the return spring 32 respectively abut against the retainer ring 31 and the partition plate 19, the inner end of the adjusting rod 18 of the blade angle adjuster extends into the main propulsion shaft 9, and the return spring 32 can drive the inner end of the adjusting rod 18 to press against the conical surface of the driving head 30.

In the working process, when the driving head 30 moves up and down under the driving of the driving screw 24, the driving head can drive the adjusting rod 18 to move outwards through pushing the conical surface to the end part of the adjusting rod 18, and the adjusting rod 18 can always keep pressing the conical surface under the action of the reset spring 32. The two are combined with each other to jointly realize the adjustment of the sliding length of the adjusting rod 18, so as to realize the accurate adjustment of the angle of the harrow blades 14. Of course, in order to ensure the smoothness of the contact of the conical surface with the end of the adjustment lever 18, as shown in fig. 5 and 6, the inner end of the adjustment lever 18 is provided with a contact head including a hemispherical spherical shell 33 fixedly provided on the adjustment lever 18, and a freely rotatable contact ball 34 provided in the spherical shell 33, the contact head being in contact with the conical surface of the driving head 30 via the contact ball 34.

In order to further improve the comprehensive performance of the pushing feeder and realize more accurate adjustment, the invention also has the function of sectionally adjusting the pushing speed of each section of hearth in the multi-hearth furnace, that is, the rake blade 14 angle of the pushing rake 11 in each section of hearth can be independently adjusted. For this purpose, as shown in fig. 6, the driving head 30 includes a head body 35 and a central block 36, wherein the upper portion of the head body 35 is cylindrical, and the lower portion is conical, a circular hole matched with the central block 36 is provided at the center of the head body 35, and the central block 36 is clamped in the circular hole and forms a rotating fit with the circular hole. The center block 36 is provided with a threaded hole, and the driving screw 24 is inserted into the threaded hole. The head body 35 is provided with a guide hole, and the guide rod 28 is inserted into the guide hole. When the center block 36 and the head body 35 are locked and combined, the driving screw 24 can drive the driving head 30 to move up and down integrally. When the central block 36 and the head body 35 are unlocked and separated, the driving screw 24 can only drive the central block 36 to freely rotate in the round hole of the head body 35, and does not push the driving head 30 to adjust the height direction, in order to avoid the separation of the central block 36 and the head body 35 in the axial direction, the upper end and the lower end of the central block 36 are provided with annular edges 40, and the annular edges 40 are clamped outside the head body 35.

Regarding how to lock the center block 36 and the head 35, as shown in fig. 6, a mounting groove 37 is further provided on the circumferential side of the round hole of the present invention, a solenoid valve rod 38 is provided in the mounting groove 37, and a locking block 39 is provided at the output end of the solenoid valve rod 38. The locking or unlocking between the head body 35 and the center block 36 can be formed by a locking block 39 under the drive of an electromagnetic valve rod 38. In order to further ensure the locking stability, the circumferential surface of the central block 36 is provided with a ring groove 41, and the cross section of the ring groove 41 is in a transverse T shape. The locking block 39 is located in the ring groove 41, and the length of the locking block 39 is matched with the height of the ring groove 41. The surface of the locking block 39 facing the electromagnetic valve rod 38 is provided with a first locking tooth 42, and the inner groove surface of the annular groove 41 opposite to the first locking tooth 42 is provided with a second locking tooth 43 in an annular shape. When the electromagnetic valve rod 38 is ejected, the first locking teeth 42 on the locking block 39 are separated from the second locking teeth 43 on the inner groove surface of the ring groove 41, and the center block 36 can freely rotate. When the solenoid valve stem 38 is retracted, the first locking teeth 42 on the locking block 39 engage with the second locking teeth 43 on the inner groove surface of the ring groove 41, and the center block 36 is locked.

From the aspect of cooling control of materials during discharging of the multi-hearth furnace body:

The second difference of the invention is that as shown in fig. 1, a receiving tray 55 is arranged below the lowest layer of the furnace tray, the receiving tray 55 is matched with the inner cavity of the furnace body 1 and is fixedly connected with the propelling main shaft 9, the receiving tray can follow the propelling main shaft 9 to select, and the discharging port 4 is positioned on the side wall of the furnace body 1 at one side of the top of the receiving tray 55. As shown in fig. 1 and 10, a discharging scraper 56 extending obliquely towards the inside of the furnace body 1 is further arranged on the inner side wall of the furnace body 1 above the receiving tray 55, and the lower edge of the discharging scraper 56 is in contact with the receiving tray 55.

After the material of the invention falls from the bottom-most furnace tray, the material is not directly discharged, but falls on the receiving tray 55, and the discharging scraper 56 pushes the material towards the discharging hole 4 along with the rotation of the receiving tray 55. A cooling chamber 57 is formed between the receiving tray 55 and the bottom of the furnace body 1, a cooling pipe 58 is arranged in the cooling chamber 57, the cooling pipe 58 is connected with an external cooling water source, a plurality of upward cooling spray heads 59 are arranged on the cooling pipe 58, and the cooling spray heads 59 are communicated with the cooling pipe 58. A cooling pipe 58 is arranged in a cooling chamber 57 enclosed between the material receiving disc 55 and the bottom of the furnace body 1, and cooling water is sprayed towards the material receiving disc 55 through a cooling spray head 59 so as to realize rapid cooling of materials on the material receiving disc 55; the cooling chamber 57 provides sufficient evaporation space for the evaporative phase change of the cooling water, facilitating the rapid evaporation of the cooling water to remove heat. Meanwhile, as the material receiving disc 55 continuously rotates along with the propelling main shaft 9, even if the cooling spray heads 59 adopt a fixed mounting mode, complete cooling coverage can be formed along with the rotation of the material receiving disc 55, the cooling is more uniform, and the excessive cooling spray heads 59 are not required to be arranged. In addition, after preliminary cooling treatment, along with the rotation of the receiving disc 55, the materials can be collected to the discharge port 4 by the discharge scraping plate 56, so that the dual functions of cooling and discharging are completed.

As for the specific form of the cooling tube 58, it may adopt a spiral coil, a multi-layer loop, etc., as shown in fig. 12, that is, a multi-layer loop structure, the cooling tube 58 includes a plurality of loops 60, two adjacent loops 60 are communicated through a nipple 61, and two adjacent layers of nipple 61 are staggered with each other, and a water inlet joint 62 is disposed on the outermost loop 60.

On this basis, in order to further improve the overall heat exchange performance of the receiving tray 55, a plurality of criss-cross heat dissipation strips 63 are arranged on the bottom surface of the receiving tray 55, and the heat dissipation strips 63 are welded with the receiving tray 55. The receiving tray 55 is preferably made of a high heat conductive alloy to facilitate rapid heat transfer, but its temperature resistance needs to be satisfactory. After the cooling water contacts with the receiving tray 55, a great amount of steam is generated by evaporation phase change, in order to facilitate the discharge of the steam, a steam outlet 64 is further provided on the side wall of the cooling chamber 57, and in order to recycle the steam, the steam outlet 64 is connected with a steam recycling device, and the steam recycling device can be further connected with a steam injector which is provided on the furnace body 1 and provides high temperature steam for the activation section.

After the material is discharged from the discharge hole 4, the temperature is greatly reduced, on the basis, a transverse first screw conveyer 65 can be arranged at the discharge hole 4, the inlet end of the first screw conveyer 65 is communicated with the discharge hole 4, the outlet end of the first screw conveyer 65 is communicated with the inlet end of a second screw conveyer 67 positioned below the furnace body 1 through a blanking pipe 66, and a screw cooling water jacket 68 is arranged on the outer surface of the second screw conveyer 67. After the material is cooled in the cooling chamber 57, the material is subjected to secondary cooling treatment by the spiral cooling water jacket 68 on the second spiral conveyor 67, and the subsequent process requirements are basically met. And conveying the mixture to subsequent sieving, granulating and packaging equipment through a conveying device.

From the aspect of secondary combustion treatment of high-temperature flue gas discharged from a multi-hearth furnace body:

The invention is characterized in that the secondary combustion chamber 69 is arranged outside the furnace body 1, and the secondary combustion chamber 69 is coated on the outer side wall of the furnace body 1 in a ring shape. In view of the installation of other devices, the secondary combustion chamber 69 is provided with a relief groove 76 extending along the height direction of the furnace body 1 on one side of the furnace body 1, and the relief groove 76 is used for installing a steam injector and/or an air injector and/or a burner. The cyclone separator 70 is further arranged on one side of the secondary combustion chamber 69, the inlet end of the cyclone separator 70 is communicated with the smoke outlet 3 of the furnace body 1, the gas outlet end of the cyclone separator 70 is communicated with the secondary combustor in the secondary combustion chamber 69, and the tail gas outlet 72 is further arranged on one side of the top of the secondary combustion chamber 69.

The flue gas produced in the working engineering of the multi-hearth furnace of the invention still contains a great amount of unburnt substances in the gaseous part after being treated by the cyclone separator 70, and the substances in the gaseous part can be supplied as fuel of the secondary burner and can be burnt by the secondary burner in the secondary combustion chamber 69; the secondary combustion chamber 69 is arranged outside the furnace body 1 in a cladding mode, so that the secondary combustion chamber 69 can be used as a heat preservation layer even if combustion is not performed in the secondary combustion chamber 69, and the heat preservation performance of the furnace body 1 is improved; when the flue gas is combusted through the secondary combustion chamber 69, the temperature of the secondary combustion chamber 69 can be further improved, the temperature difference between the secondary combustion chamber 69 and the inside of the furnace body 1 is reduced, heat exchange is weakened, and the overall heat preservation performance and heat energy efficiency are further improved.

Of course, because of the large difference in temperature requirements in each section of furnace, in order to achieve the adaptive adjustment of the secondary combustion, the number of the secondary combustion chambers 69 corresponding to the number of the furnace chambers in the furnace body 1 is divided into multiple layers of secondary combustion chambers 73. As shown in fig. 14, an annular gas pipe 74 is provided in each secondary combustion chamber 73, and a plurality of secondary burners are provided on the inner wall of each secondary combustion chamber 73, and are supplied with gas by the gas pipe 74. The gas outlet end of the cyclone separator 70 is connected with a distributing pipe 75, and the distributing pipe 75 is connected with a gas pipe 74 in each layer of secondary combustion chamber 73. A distributing valve is arranged on a connecting node of the distributing pipe 75 and the air path pipe 74. Through different distribution amounts, different environments of the secondary combustion chamber 73 are controlled to form more accurate matching of the temperatures of the hearths of the furnace body 1.

The solid materials separated by the cyclone separator 70 of the present invention can be generally used directly, and of course, the solid materials can be reintroduced into the furnace body 1 without satisfying the activation and regeneration effects, and therefore, a lifter can be further disposed on one side of the cyclone separator 70, the inlet end of the lifter is opposite to the solid outlet end of the cyclone separator 70, and the outlet end of the lifter is opposite to the feed inlet 2 of the furnace body 1. The exhaust outlet 72 communicates with an end treatment device, and the exhaust can be purified by the end treatment device.

From the aspect of waste heat recovery of tail gas discharged from a multi-hearth secondary combustion chamber:

The end treatment apparatus employed in the present invention may employ a dedicated exhaust-heat boiler 77, as shown in fig. 15, the exhaust-gas outlet 72 being in communication with the exhaust-heat boiler 77 through an exhaust-gas delivery pipe 84. The waste heat boiler 77 comprises a boiler shell 78, two transverse plates 79 are arranged in the boiler shell 78, and the interior of the boiler shell 78 is divided into a water washing cavity 80, a water storage cavity 81 and a combustion cavity 82 from top to bottom by the transverse plates 79. The combustion chamber 82 is provided with a three-stage burner 83 on one side and is connected to an exhaust gas delivery pipe 84 on the other side. A plurality of vertical heat exchange tubes 87 are uniformly arranged in the water storage cavity 81, and two ends of each heat exchange tube 87 are respectively communicated with the water washing cavity 80 and the combustion cavity 82. The side wall of the water storage cavity 81 is provided with a water supplementing port 85 and a water discharging port 86. The washing chamber 80 is provided with a bent pipe 88 bent downwards at a position opposite to the heat exchange pipe 87, the head end of the bent pipe 88 is communicated with the upper end of the heat exchange pipe 87, and the top surface of the washing chamber 80 is provided with a tail end exhaust pipe 89. The washing cavity 80 is filled with washing liquid, the liquid level of the washing liquid is lower than the highest section of the bent pipe 88, and the tail end of the bent pipe 88 stretches into the washing liquid.

In the invention, secondary combustion is carried out on the flue gas exhausted from the furnace body 1 by the secondary burner in the secondary combustion chamber 69, and the tail gas generated by combustion is conveyed into the combustion cavity 82 of the waste heat boiler 77 through the tail gas conveying pipe 84. In the combustion chamber 82 of the waste heat boiler 77, the high-temperature tail gas enters the heat exchange tube 87, and heat exchange is carried out between the heat exchange tube 87 and the water stored in the water storage chamber 81, so that heat energy recovery is realized. On this basis, in order to improve the heat exchange effect of the heat exchange tube 87, a plurality of annular heat exchange ribs 90 are uniformly arranged on the side wall of the heat exchange tube 87 along the length direction of the heat exchange tube 87.

The tail gas then enters the washing liquid through the bent pipe 88, and is washed in the washing liquid, so that harmful substances in the tail gas are removed, and finally the tail gas is discharged through the tail gas outlet pipe 89. When combustible substances are also present in the tail gas discharged from the secondary combustion chamber 69, the tertiary burner 83 can be started, and the tertiary burner 83 can ignite the combustible substances to promote the combustible substances in the tail gas to burn out; further ensuring the safety and cleanliness of the discharge. The invention has high heat recovery efficiency to the tail gas and good cleaning effect. To further ensure the water-washing effect, the size of the bent pipe 88 of the present invention is smaller than that of the heat exchange pipe 87. The small-size bent pipe 88 can improve the exhaust pressure on the one hand, further can improve the diffusion distance of tail gas in the water washing liquid, and meanwhile can avoid the too fast flow rate of the tail gas in the heat exchange pipe 87, so that the heat exchange pipe 87 has a better heat exchange effect with water.

On the basis, as shown in fig. 15 and 16, the tail section of the elbow 88 is further provided with an air outlet head 91, the air outlet head 91 is hollow and spherical, the inside of the air outlet head 91 is communicated with the elbow 88, and a plurality of air outlet micropores are uniformly formed in the side wall of the air outlet head 91. Through the air outlet head 91, the tail gas can be separated into smaller particles, so that the contact area with the water washing liquid is increased, and the water washing effect is improved. The water washing cavity 80 is also internally provided with a transverse air distribution plate 92, and the air distribution plate 92 is matched with the water washing cavity 80 in a direction and fixedly arranged in the water washing cavity 80. A plurality of air distribution micropores are uniformly formed in the air distribution plate 92, and the air distribution plate 92 is immersed in the water washing liquid and is higher than the air outlet head 91. The air distribution plate 92 also plays a role in separating air bubbles, and improves the washing effect.

Claims (10)

1. The active carbon regeneration equipment with the waste heat boiler comprises a furnace body (1), wherein a feed inlet (2) and a smoke outlet (3) are arranged at the top of the furnace body (1), and a discharge outlet (4) is arranged at the lower part of the furnace body (1); a plurality of layers of furnace plates are vertically and uniformly arranged in the furnace body (1), the furnace plates divide the interior of the furnace body (1) into a plurality of sections of furnace chambers, each furnace plate comprises a first furnace plate (5) and a second furnace plate (6), and the first furnace plates (5) and the second furnace plates (6) are distributed in an up-and-down staggered manner; a first blanking port (7) is arranged in the center of the first furnace plate (5), and a second blanking port (8) is arranged at a position, close to the edge, of the second furnace plate (6); a feeding propeller for pushing materials from the tray body of the tray towards the first blanking port (7) and the second blanking port (8) is also arranged in the furnace body (1);

the method is characterized in that: the furnace body (1) is also provided with a secondary combustion chamber (69), one side of the secondary combustion chamber (69) is also provided with a cyclone separator (70), the inlet end of the cyclone separator (70) is communicated with a smoke outlet (3) of the furnace body (1), the gas outlet end of the cyclone separator (70) is communicated with the secondary combustion chamber in the secondary combustion chamber (69), one side of the top of the secondary combustion chamber (69) is also provided with a tail gas outlet (72), and the tail gas outlet (72) is communicated with a waste heat boiler (77) through a tail gas conveying pipe (84);

The waste heat boiler (77) comprises a boiler shell (78), wherein two transverse plates (79) are arranged in the boiler shell (78), and the interior of the boiler shell (78) is divided into a water washing cavity (80), a water storage cavity (81) and a combustion cavity (82) from top to bottom by the transverse plates (79);

One side of the combustion cavity (82) is provided with a three-stage burner (83), and the other side is connected with a tail gas conveying pipe (84);

A plurality of vertical heat exchange pipes (87) are uniformly arranged in the water storage cavity (81), and two ends of each heat exchange pipe (87) are respectively communicated with the water washing cavity (80) and the combustion cavity (82); a water supplementing port (85) and a water outlet port (86) are arranged on the side wall of the water storage cavity (81);

A bent pipe (88) bent downwards is arranged at a position opposite to the heat exchange pipe (87) in the washing cavity (80), the head end of the bent pipe (88) is communicated with the upper end of the heat exchange pipe (87), and a tail end exhaust pipe (89) is arranged on the top surface of the washing cavity (80); the washing cavity (80) is filled with washing liquid, the liquid level of the washing liquid is lower than the highest section of the bent pipe (88), and the tail end of the bent pipe (88) stretches into the washing liquid.

2. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 1, wherein: a plurality of annular heat exchange ribs (90) are uniformly arranged on the side wall of the heat exchange tube (87) along the length direction of the heat exchange tube (87).

3. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 2, wherein: the size of the bent pipe (88) is smaller than that of the heat exchange pipe (87).

4. An activated carbon regeneration apparatus with a waste heat boiler as set forth in claim 3, wherein: the tail section of the elbow pipe (88) is also provided with an air outlet head (91), the air outlet head (91) is hollow spherical, the inside of the air outlet head (91) is communicated with the elbow pipe (88), and a plurality of air outlet micropores are uniformly formed in the side wall of the air outlet head (91).

5. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 4, wherein: a transverse air distribution plate (92) is further arranged in the washing cavity (80), and the air distribution plate (92) is matched with the washing cavity (80) in a direction and fixedly arranged in the washing cavity (80); a plurality of gas distribution micropores are uniformly formed in the gas distribution plate (92), and the gas distribution plate (92) is immersed in the water washing liquid and is higher than the gas outlet head (91).

6. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 5, wherein: the feeding propeller comprises a vertical propelling main shaft (9) arranged in the center of the furnace body (1), and the lower end of the propelling main shaft (9) extends out of the furnace body (1) and is in transmission connection with a main shaft driver (10); a pushing rake (11) is arranged on the pushing main shaft (9) corresponding to the position of each layer of furnace plate; the pushing rake (11) comprises a connecting sleeve (12), a rake arm (13) and rake blades (14), wherein the connecting sleeve (12) is sleeved outside the pushing main shaft (9) and is fixedly connected with the pushing main shaft (9); the rake arm (13) is fixedly arranged on the side wall of the connecting sleeve (12) and extends along the radial direction of the connecting sleeve (12); one side of the rake arm (13) is provided with a plurality of mounting plates (15) extending towards one side of the rake arm (13), and the overhanging end of the mounting plates (15) is provided with a hinging seat (16); each mounting plate (15) is provided with a harrow blade (14), the projection of each harrow blade (14) and each mounting plate (15) in the vertical direction are obliquely intersected, and the oblique direction is matched with the material pushing direction; the harrow blades (14) are hinged with the hinge seats (16), and the hinge centers extend vertically; the lower edge of the harrow blade (14) is contacted with the plate body of the stove plate; the pushing rake (11) further comprises a blade angle adjuster, and the rake blade (14) can rotate around the hinge center under the drive of the blade angle adjuster.

7. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 6, wherein: the top of the rake arm (13) is provided with a long groove (17) extending along the length direction of the rake arm (13), and the blade angle adjuster comprises an adjusting rod (18) which is arranged in the long groove (17) and can slide along the length direction of the long groove (17); a plurality of partition boards (19) are uniformly distributed in the long groove (17) along the length direction of the long groove (17), rod holes matched with the adjusting rods (18) are formed in the partition boards (19), and the adjusting rods (18) are arranged in the rod holes in a penetrating mode; the upper surface of the mounting plate (15) is provided with a short groove (20) extending along the length direction of the mounting plate (15), a short rod (21) capable of moving along the width direction of the short groove (20) and extending along the length direction of the short groove (20) is arranged in the short groove (20), and the short rod (21) is fixedly connected with the adjusting rod (18); the short rod (21) is provided with a pin hole (22) extending along the length direction of the short rod (21), one end of the rake blade (14) close to the short rod (21) is provided with a transmission pin (23) matched with the pin hole (22), and the transmission pin (23) is arranged in the pin hole (22) in a penetrating manner and is in sliding fit with the pin hole (22); the blade angle adjuster further comprises a driving mechanism capable of driving the adjusting rod (18) to move along the length direction of the long groove (17).

8. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 7, wherein: the propelling main shaft (9) is a hollow shaft, the driving mechanism comprises a vertical driving screw rod (24) arranged at the center of the propelling main shaft (9), a rotating disc (25) is arranged at the center of the inner surface of the lower end of the propelling main shaft (9), and a connecting seat (26) is arranged at the center of the upper section of the rotating disc (25); the lower end of the driving screw rod (24) is arranged in the connecting seat (26) in a penetrating way and forms a running fit with the connecting seat (26), and the upper end of the driving screw rod (24) extends out of the propelling main shaft (9) and is in transmission connection with the adjusting motor (27) fixedly arranged at the top of the furnace body (1); a plurality of vertical guide rods (28) are uniformly distributed on the outer side of the driving screw rod (24), the lower ends of the guide rods (28) are fixedly connected with the upper section of the connecting seat (26), and the upper ends of the guide rods (28) are fixedly connected with a bracket (29) fixedly arranged at the top of the furnace body (1);

The driving mechanism further comprises a plurality of driving heads (30) which are arranged in the propelling main shaft (9) corresponding to the number of the propelling rakes (11), and the peripheral surface of the driving heads (30) comprises a section of conical surface; the driving head (30) is sleeved outside the guide rod (28) and the driving screw rod (24), and is in sliding fit with the guide rod (28) and in threaded fit with the driving screw rod (24);

The blade angle adjuster comprises a blade angle adjuster, wherein a plurality of check rings (31) are fixedly arranged on an adjusting rod (18) of the blade angle adjuster corresponding to the number of the partition plates (19), a reset spring (32) is sleeved outside the adjusting rod (18) between the check rings (31) and the partition plates (19), two ends of the reset spring (32) respectively lean against the check rings (31) and the partition plates (19), the inner end of the adjusting rod (18) of the blade angle adjuster stretches into the main propulsion shaft (9), and the reset spring (32) can drive the inner end of the adjusting rod (18) to press against the conical surface of a driving head (30).

9. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 8, wherein: the driving head (30) comprises a head body (35) and a central block (36), wherein the upper part of the head body (35) is cylindrical, the lower part of the head body is conical, a round hole matched with the central block (36) is formed in the center of the head body (35), and the central block (36) is clamped in the round hole and forms a running fit with the round hole; the center block (36) is provided with a threaded hole, and the driving screw rod (24) is arranged in the threaded hole in a penetrating way; the head body (35) is provided with a guide hole, and the guide rod (28) is arranged in the guide hole in a penetrating way; the periphery of the round hole is also provided with a mounting groove (37), an electromagnetic valve rod (38) is arranged in the mounting groove (37), and a locking block (39) is arranged at the output end of the electromagnetic valve rod (38); the locking or unlocking between the head body (35) and the central block (36) can be formed by a locking block (39) under the drive of an electromagnetic valve rod (38); the upper end and the lower end of the center block (36) are provided with annular edges (40), and the center block is clamped outside the head body (35) through the annular edges (40).

10. The activated carbon regeneration apparatus with an exhaust-heat boiler according to claim 9, wherein: the peripheral surface of the central block (36) is provided with a ring groove (41), and the cross section of the ring groove (41) is in a transverse T shape; the locking block (39) is positioned in the annular groove (41), and the length of the locking block (39) is matched with the height of the annular groove (41); a first locking tooth (42) is arranged on the surface, facing the electromagnetic valve rod (38), of the locking block (39), and a second locking tooth (43) is annularly arranged on the inner groove surface, opposite to the first locking tooth (42), of the annular groove (41).