CN108317865A - High-temperature material waste heat recovery station system and recovery method - Google Patents

Abstract

The invention provides a high-temperature material waste heat recovery station system and recovery method. The high-temperature material is pulverized by a crusher from top to bottom, and then enters a hot ore hopper, a compensator, a sealing tube, and a distributor to uniformly distribute the material into the heat exchange chamber. The unloading hopper is discharged to the conveyor belt and belt conveyor in the unloader shell; the circulating cooling gas is driven by the circulating fan to circulate in a closed circuit in the closed system, and the cold air enters the outer shell of the air distribution chamber through the cold air main pipe, enters the ventilation hole, and then enters the heat exchange In the heat exchange chamber, the countercurrent heat exchange with the hot sinter is completed to raise the temperature. After passing through the material layer, the heat circulation air enters the deceleration chamber upward to complete the deceleration and dust reduction. It enters the waste heat boiler through the hot air main pipe, and the circulating hot air is exchanged in the waste heat boiler. After the heat is cooled, it enters the cold air main pipe and enters the next cycle again. The invention solves the technical problems of environmental pollution, uneven cooling caused by poor uniformity of cloth distribution, secondary sintering, and high failure rate of easy-to-open and blockage materials.

Description

High-temperature material waste heat recovery station system and recovery method

technical field

The invention relates to the technical field of high-temperature material cooling and waste heat recovery, and specifically provides a high-temperature material waste heat recovery station system and a recovery method.

Background technique

The existing sinter cooling and waste heat recovery technology mainly adopts ring cooler plus waste heat boiler, which has high complex failure rate, large floor area, high self-consumption of process, low power generation capacity, and serious environmental pollution. The technology of vertical cooling kiln plus waste heat boiler under research and development has low self-consumption, high power generation capacity, and environmental friendliness, but it is still in the research and development test stage, there is no fully mature and stable application, and there are the following defects, 1. Serious environmental pollution, 2, poor cloth uniformity, uneven cooling, 3, high failure rate of easy-to-open material blocking.

In view of the problems existing in the above existing technologies, it is urgent to provide a cooling technology that realizes efficient and stable heat exchange of sintered ore, and eliminates environmental pollution generated during the production process.

Contents of the invention

The invention provides a high-temperature material waste heat recovery station system and a recovery method, which solve the technical problems of the prior art such as environmental pollution, uneven cooling caused by poor uniformity of material distribution, secondary sintering problems, and high failure rate of easy-to-frozen materials.

Technical scheme of the present invention is realized like this:

The high-temperature material waste heat recovery station system of the present invention includes a feeding device, a material distribution device, a heat exchange device, and a material delivery device. The feeding device includes a crusher 1, a hot ore hopper 2, a compensator 5, and a sealed pipe 6; The discharge port of the crusher is connected to the hot ore hopper 2, the outlet of the lower part of the hot ore hopper is connected to a compensator, and the lower part of the compensator is connected to a sealed pipe; the crusher 1, the hot ore hopper 2, the compensator 5, The inside of the sealing tube 6 is connected;

The distributing device includes a distributing device 7, the top of the distributing device 7 is a centrally upward conical pointy surface with a distribution plate 71 with a guide impeller 72, along the direction of the taper of the distribution plate wall. There are several cantilevers 70 of different lengths stretched out all around, and the cantilever 74 on the longitudinal direction is set on the cantilever and corresponds to the diversion port of the said distribution tray, and the bottom of each said chutes is set along the circumferential direction and in the same direction. Blanking port 75, the cloth trajectory ring line 77 of the said blanking port is a ring, the bottom of the said distribution tray is connected with the support body 76, and the motor 78 drives the rotation of said support body; The lower nozzle of the sealing tube 6;

The heat exchange device includes a heat exchange chamber 10, a deceleration chamber 8, an air distribution chamber 11, a waste heat boiler 21, a circulating fan 19, a cold air main pipe 18, and a hot air main pipe 20; the heat exchange chamber 10 is a set around the support body The annular cylindrical cavity;

The lower part of the deceleration chamber 8 is an annular frustum-shaped 84 with the lower end retracted and the upper end expanded outward, and the upper part is a cylindrical shell 83 with a closed upper mouth. The annular frustum-shaped 84 at the lower part of the deceleration chamber 8 surrounds the support body ; The upper edge circle of the outer ring wall of the heat exchange chamber is connected to the bottom of the shell 85 of the deceleration chamber 8; the upper edge circle of the inner ring wall of the heat exchange chamber is connected to the bottom of the inner shell 87 of the deceleration chamber 8, and the deceleration chamber 8. The upper edge of the inner shell is connected to the outer wall of the support; the deceleration chamber communicates with the heat exchange chamber; the middle part of the upper cover wall of the deceleration chamber is provided with a blanking hole 81 corresponding to the sealing tube. The sealing tube is inserted into the blanking opening for sealing fit, and hot air branch nozzles 82 are evenly distributed around the blanking opening on the upper cover wall; the distribution tray and the cloth cantilever are located inside the deceleration chamber;

The air distribution chamber 11 is an annular chamber docked at the lower part of the heat exchange chamber, and the inner and outer ring walls of the air distribution chamber are sealed and fixed with the lower edges of the inner ring wall and the outer ring wall of the heat exchanger and communicated internally. , the bottom of the annular cavity of the air distribution chamber is integrally provided with a plurality of conical discharge hoppers 114; the upper part of the conical discharge hopper shell is evenly distributed with circular ventilation holes 117; Shell 111, the top cover at the upper end of the outer ring wall of the outer shell is closed and fixed with the lower part of the outer ring wall of the heat exchange chamber, and the upper edge of the inner ring wall of the outer shell is closed and fixed with the bottom edge of the inner ring wall of the heat exchange chamber. The bottom edge of the inner and outer ring walls of the outer shell is provided with a bottom cover to seal and fix around the discharge opening of the tapered discharge hopper; A cavity is formed between the bodies, and the part of the discharge hopper with ventilation holes is sealed in the cavity of the outer shell; the outer shell 111 is provided with an air inlet;

Described conveying device comprises unloader 13, unloader shell 131, and described unloader is a plurality of conveyer belts that are arranged at the center of symmetry below the discharge mouth of described tapered hopper, and described unloader shell is Each of the conveyor belts is surrounded by a circular closed shell inside. A material guide groove 14 is arranged in the middle of the bottom of the unloader shell, and a material guide port is provided at the lower part of the material guide groove. The inner end of the conveyor belt corresponds to the material guide groove. Unloading; the lower part of the material guide port is provided with a belt conveyor to transport the mineral material outward; the lower opening of the tapered unloading hopper extends into the upper cover of the unloader shell for sealing fit;

The upper part of the waste heat boiler 21 is connected to the hot air nozzle of the deceleration chamber through the hot air main pipe 20 and each hot air branch pipe, and the lower part of the waste heat boiler is connected to the lower part of the outer ring wall of the outer casing of the air distribution chamber through the cold air main pipe 18 The air inlet, the cold air main pipe is provided with a circulating fan 19; the waste heat boiler is provided with a heat exchange device.

The outer casing 111 of the air distribution chamber is fixed with a plurality of dredge installation cylinders 112 along the circumference, and the dredge guide hole 113 is set on the conical discharge hopper shell, and the electro-hydraulic pusher 121 of the dredge is supported on the In the installation barrel of the dredge machine, the dredge push rod 123 is drilled into the guide hole of the dredge machine and extends into the discharge port 115 of the tapered discharge hopper for dredging; 13 When the upper material is cut off, start the dredging machine 12 to dredge;

The support position of the hot ore hopper 2 is equipped with a weighing sensor 3, and the hot ore hopper 2 is sealed and connected with the upper and lower equipment by a flexible seal. The lower part of the cone section of the hot ore hopper 2 is equipped with a large block crusher 4, When the weighing sensor 3 detects that the weight of the hot ore hopper 2 has increased abnormally, it is determined that the lower opening of the hopper is blocked, and the bulk crusher 4 is started to break and dredge;

On the wall of the discharge opening of the hot ore hopper 2, a large block crusher 4 is arranged along the circumference and supported on a fixed bracket 44. The large block crusher 4 includes a radial insert 47: the insert is a rectangular insert for insertion In the hot ore hopper, the shape of its front end coincides with the bottom side wall of the hot ore hopper. When it is not working, the insertion knife is retracted, and its front end fits with the inner cone of the hopper to close the hopper, ensuring that the material flow is normal and the working state The two sets of inserting knives that are opposite to each other are inserted into the center at the same time, crushing the large blocks that block the discharge opening, and dredging the discharge opening;

The wall structure of the hot ore hopper 2 is wear-resistant lining plate 219, heat insulation layer 210, and steel structure shell 211 from inside to outside; the wall structure of the heat exchange chamber 10 is heat-resistant and wear-resistant layer 106 from inside to outside , heat insulation layer 105, steel structure shell 103; the wall structure of the deceleration chamber 8 is heat insulation layer 86 and steel structure shell 85 from inside to outside.

A discharge branch pipe 181 is arranged on the cold air main pipe 18, and a regulating valve 24, a dust collector 16 and an induced draft fan 17 are sequentially arranged on the discharge branch pipe.

The supporting body of the distributor 7 is provided with a water-sealed structure 9 to seal gaps for heat insulation; the motor 78 drives gears to drive the supporting body to rotate.

The heat exchange device of the waste heat boiler 21 is a closed water circulation pipe 25, the water circulation pipe is connected to the steam inlet and outlet of the steam turbine, the boiler feed water pump group 23 is arranged on the water circulation pipe, and the superheated steam generated by the heat exchange device The steam turbine 22 is driven to do work externally, and the low-pressure steam after work is condensed and then pressurized by the boiler feed water pump unit 23 for the heat exchange device to circulate.

The cantilever of the distributor is provided with a cantilever support 73, and by controlling the rotation speed of the distributor, the feeding speed is controlled to keep the sealed tube filled with hot ore all the time.

Described compensator 5 is a kind of flexible connection short pipe, comprises inner wear-resisting casing 53, and the upper and lower of described wear-resistant pipe outer wall respectively fixes a steel short pipe one 55, steel short pipe two 58, a stainless steel short pipe two. The corrugated sealing pipe 56 is connected and fixed between the two short steel pipes. The wear-resistant casing 53 is divided into upper and lower sections, and there is an oblique annular expansion joint 52 in the middle for the expansion and contraction of the compensator, as described in the previous section. A hard heat insulation layer 54 is fixed between the short steel pipe one and the wear-resistant casing, and a flexible heat-insulation layer 57 is fixed on the outer wall of the wear-resistant casing between the two steel short pipes.

After being crushed by the crusher from top to bottom, the high-temperature material or hot ore material enters the hot ore hopper at the lower part and then enters the closed system for closed-circuit transmission and feeding. It first passes through the compensator and the sealing tube and falls to the distribution plate of the distributor in the lower deceleration chamber. On the upper side, the material is evenly distributed into the heat exchange chamber through the cantilever with a launder of different lengths, and then discharged to the conveyor belt in the shell of the unloader through the unloading hopper at the lower part, and then transferred to the guide trough of the unloader and discharged to the belt conveyor out;

The invention discloses a method for recovering waste heat from high-temperature materials. The circulating cooling gas is driven by a circulating fan to circulate in a closed circuit in a closed system, and enters the cold air main pipe from the waste heat boiler, and a branch pipe is arranged on the cold air main pipe. Controlled by a regulating valve, a small part of the cold air After being dedusted by the release branch pipe and the dust collector, it is driven by the induced draft fan and discharged into the atmosphere. A small part of the gas is discharged outside to achieve a negative pressure working state due to insufficient gas in the heat exchange chamber. The hole then enters the heat exchange chamber, where it completes countercurrent heat exchange with the hot sintered ore to raise the temperature. After passing through the material layer, the heat circulation air enters the deceleration chamber upwards to complete the deceleration and dust reduction, and enters the waste heat boiler through the hot air main pipe to circulate the hot air. After heat exchange and cooling in the waste heat boiler, it enters the next cycle again.

In the above method, the superheated steam generated by the waste heat boiler drives the steam turbine to do work through the water circulation pipeline, and the low-pressure steam after the work is condensed and then pressurized by the boiler feed water pump group for the boiler to circulate heat exchange.

In the above method, another small part of the air in the controllable environment enters from the material guide groove, enters the heat exchange chamber through the discharge port above the unloader, completes heat exchange and temperature rise with the hot sintered ore in the heat exchange chamber, and passes through the material The thermal circulation air after the layer enters the deceleration chamber upwards and joins in the deceleration chamber; a small amount of air enters the preheating above the hot ore hopper and is heated through the sealed tube. The heated hot air all enters the deceleration chamber to complete the deceleration and dust reduction .

Beneficial effects of the present invention:

The present invention uses a ring-shaped heat exchange chamber, adopts a sealed tube and a distributor to charge and distribute materials, and the main cycle of the heat exchange medium gas adopts a closed-circuit cycle working mode, and uses a sealing tube to cooperate with a method of distributing materials to realize the sealing and sealing in the hot air chamber. The uniform charging of high-temperature materials avoids segregation of materials and realizes uniform heat exchange of high-temperature materials. At the same time, the method of closed-circuit circulation of circulating air is adopted to avoid a large amount of fresh air from entering and greatly reduce the oxygen content in the gas. Avoid the secondary sintering phenomenon that may occur when there is raw material in the sintering ore, ensure continuous and stable operation of production, and finally realize environmental protection, pollution-free, low energy consumption, and high-efficiency waste heat utilization while realizing stable and continuous operation of the equipment. The device of the invention is simple, reliable in operation, low in power consumption, high in power generation capacity, clean and pollution-free, occupies a small area of the device, and is flexible in installation and arrangement.

Description of drawings

Fig. 1 schematic diagram of the system of the present invention,

Fig. 2 (a), (b) the deceleration chamber of the present invention top view, schematic diagram of front view,

Fig. 3 is a schematic diagram of a top view of the heat exchange cavity of the present invention A-A,

Fig. 4 schematic diagram of the cantilever of the distributor of the present invention,

Fig. 5 (a), (b), (c) the front view of the air distribution chamber of the present invention, the top view, and the enlarged schematic diagram of the ventilation hole on the conical discharge hopper shell,

Fig. 6a, b, c are the front view sectional view, front view and top view schematic diagram of the hot ore hopper and the bulk crusher of the present invention,

Fig. 7 schematic diagram of the compensator of the present invention,

Fig. 8 conical discharge hopper of the present invention, dredge schematic diagram,

Fig. 9 is a schematic diagram of the cooling path of high-temperature materials in the present invention,

Fig. 10 is a schematic diagram of a closed circuit circulation path of circulating air in the present invention.

Description of drawing number: crusher 1, hot ore hopper 2, weighing sensor 3, bulk crusher 4, compensator 5, sealing tube 6, distributor 7, deceleration chamber 8, water sealing structure 9, heat exchange chamber 10, Air distribution chamber 11, dredging machine 12, unloading machine 13, material guide trough 14, belt conveyor 15, dust collector 16, induced draft fan 17, cold air main pipe 18, release branch pipe 181, circulation fan 19, hot air main pipe 20, waste heat boiler 21 , steam turbine 22, boiler feed water pump group 23, regulating valve 24, water circulation pipeline 25.

The wall layer structure of hot ore hopper 2 includes: steel structure shell 211, wear-resistant lining plate 219, heat insulation layer 210,

Bulk crusher 4 comprises: electro-hydraulic pusher 42, driver 43, fixed support 44, guide frame 46, radial insertion knife 47.

The compensator 5 includes: an expansion joint 52, a wear-resistant casing 53, a hard heat insulation layer 54, a short steel pipe 55, a stainless steel corrugated sealing pipe 56, a flexible heat insulation layer 57, and a short steel pipe 2 58.

Distributor 7, guide impeller 72, distribution disc 71, cantilever 70, chute 74, blanking port 75, distribution track loop 77, support body 76, distributor driving device 78.

The deceleration chamber 8 includes: a blanking hole 81, a hot air branch pipe outlet 82, a cylindrical shape 83, an annular frustum shape 84, a steel structure shell 85, and a heat insulation layer 86;

The heat exchange chamber 10 includes: a heat-resistant and wear-resistant layer 106, a heat-insulating layer 105, and a steel structure shell 103;

The air distribution chamber 11 includes: an outer shell 111, a dredge installation cylinder 112, a dredge guide hole 113, a tapered discharge hopper 114, a discharge hopper discharge opening 115, and a ventilation hole 117; an inner enclosure 118

The dredging machine 12 includes: an electro-hydraulic pusher 121, a driver 122, a dredging push rod 123, a sealing guide support 124, a guide support 125,

Detailed ways

Example

Referring to Fig. 1, the high-temperature material waste heat recovery station system of the present invention includes a feeding device, a material distribution device, a heat exchange device, and a material delivery device. The feeding device includes a crusher 1, a hot ore hopper 2, and a compensator 5 , sealed pipe 6; the discharge opening of the crusher is connected to the hot ore hopper 2, the lower part of the hot ore hopper is connected to a compensator, and the lower part of the compensator is connected to a sealed pipe; the crusher 1, hot ore The hopper 2, the compensator 5, and the sealing tube 6 are internally connected;

Referring to Figs. 1 and 4, the distributing device includes a distributing device 7, and the top of the distributing device 7 is a distributing pan 71 with a guide impeller 72 on the surface of a conical pointed top with the center upward, along the distributing The taper direction of the tray wall stretches out several cantilevers 70 of different lengths around, the cantilevers are provided with flow grooves 74 in the length direction and correspond to the diversion openings of the distribution trays, and the bottom of each flow groove is provided with Along the circumferential direction, the blanking opening 75 in the same direction, the cloth trajectory ring line 77 of the blanking opening is a ring, the bottom of the distribution tray is connected to the support body 76, and the motor 78 drives the support body to rotate; The tip of the tray is facing the lower nozzle of the sealing tube 6;

Referring to Figures 1, 2, 3, and 5, the heat exchange device includes a heat exchange chamber 10, a deceleration chamber 8, an air distribution chamber 11, a waste heat boiler 21, a circulating fan 19, a cold air main pipe 18, and a hot air main pipe 20; The heat exchange chamber 10 is an annular cylindrical chamber surrounding the support body;

The lower part of the deceleration chamber 8 is an annular frustum-shaped 84 with the lower end retracted and the upper end expanded outward, and the upper part is a cylindrical shell 83 with a closed upper mouth. The annular frustum-shaped 84 at the lower part of the deceleration chamber 8 surrounds the support body ; The upper edge circle of the outer ring wall of the heat exchange chamber is connected to the bottom of the shell 85 of the deceleration chamber 8; the upper edge circle of the inner ring wall of the heat exchange chamber is connected to the bottom of the inner shell 87 of the deceleration chamber 8, and the deceleration chamber 8. The upper edge of the inner shell is connected to the outer wall of the support; the deceleration chamber communicates with the heat exchange chamber; the middle part of the upper cover wall of the deceleration chamber is provided with a blanking hole 81 corresponding to the sealing tube. The sealing tube is inserted into the blanking opening for sealing fit, and hot air branch nozzles 82 are evenly distributed around the blanking opening on the upper cover wall; the distribution tray and the cloth cantilever are located inside the deceleration chamber;

The air distribution chamber 11 is an annular chamber docked at the lower part of the heat exchange chamber, and the inner and outer ring walls of the air distribution chamber are sealed and fixed with the lower edges of the inner ring wall and the outer ring wall of the heat exchanger and communicated internally. , the bottom of the annular cavity of the air distribution chamber is integrally provided with a plurality of conical discharge hoppers 114; the upper part of the conical discharge hopper shell is evenly distributed with circular ventilation holes 117; Shell 111, the top cover at the upper end of the outer ring wall of the outer shell is closed and fixed with the lower part of the outer ring wall of the heat exchange chamber, and the upper edge of the inner ring wall of the outer shell is closed and fixed with the bottom edge of the inner ring wall of the heat exchange chamber. The bottom edge of the inner and outer ring walls of the outer shell is provided with a bottom cover to seal and fix around the discharge opening of the tapered discharge hopper; A cavity is formed between the bodies, and the part of the discharge hopper with ventilation holes is sealed in the cavity of the outer shell; the outer shell 111 is provided with an air inlet;

Referring to Fig. 1, the conveying device includes an unloader 13 and an unloader housing 131, and the unloader is a plurality of conveyor belts arranged symmetrically below the discharge port of the tapered discharge hopper. The unloader shell is a circular closed shell that surrounds each of the conveyor belts. A material guide trough 14 is arranged in the middle of the bottom of the unloader shell. Corresponding to the discharge of the material guide groove; the lower part of the material guide port is provided with a belt conveyor to transport the mineral material outward; the lower material opening of the tapered discharge hopper extends into the upper cover of the unloader shell for sealing fit;

The upper part of the waste heat boiler 21 is connected to the hot air nozzle of the deceleration chamber through the hot air main pipe 20 and each hot air branch pipe, and the lower part of the waste heat boiler is connected to the lower part of the outer ring wall of the outer casing of the air distribution chamber through the cold air main pipe 18 The air inlet, the cold air main pipe is provided with a circulating fan 19; the waste heat boiler is provided with a heat exchange device.

Referring to Fig. 5, the outer casing 111 of the air distribution chamber fixes a plurality of dredge installation cylinders 112 along the circumference, and the dredge guide hole 113 is set on the conical discharge hopper shell, and the electro-hydraulic of the dredge The pusher 121 is supported in the installation barrel of the dredging machine, and the dredging push rod 123 drills into the guide hole of the dredging machine and extends into the discharge port 115 of the tapered discharge hopper for dredging; When it is detected that the material on the unloader 13 is cut off, start the dredge machine 12 to dredge;

Referring to Figures 1 and 6, a load cell 3 is installed at the support position of the hot ore hopper 2, and the hot ore hopper 2 is sealed and connected with the upper and lower equipment by a flexible seal, and the lower part of the cone section of the hot ore hopper 2 Equipped with a bulk crusher 4, when the weighing sensor 3 detects that the weight of the hot ore hopper 2 has increased abnormally, it is determined that the lower opening of the hopper is blocked, and the bulk crusher 4 is started to break and dredge;

On the wall of the discharge opening of the hot ore hopper 2, a large block crusher 4 is arranged along the circumference and supported on a fixed bracket 44. The large block crusher 4 includes a radial insert 47: the insert is a rectangular insert for insertion In the hot ore hopper, the shape of its front end coincides with the bottom side wall of the hot ore hopper. When it is not working, the insertion knife is retracted, and its front end fits with the inner cone of the hopper to close the hopper, ensuring that the material flow is normal and the working state The two sets of inserting knives that are opposite to each other are inserted into the center at the same time, crushing the large blocks that block the discharge opening, and dredging the discharge opening;

The wall structure of the hot ore hopper 2 is wear-resistant lining plate 219, heat insulation layer 210, and steel structure shell 211 from inside to outside; the wall structure of the heat exchange chamber 10 is heat-resistant and wear-resistant layer 106 from inside to outside , heat insulation layer 105, steel structure shell 103; the wall structure of the deceleration chamber 8 is heat insulation layer 86 and steel structure shell 85 from inside to outside.

A discharge branch pipe 181 is arranged on the cold air main pipe 18, and a regulating valve 24, a dust collector 16 and an induced draft fan 17 are sequentially arranged on the discharge branch pipe.

The supporting body of the distributor 7 is provided with a water-sealed structure 9 to seal gaps for heat insulation; the motor 78 drives gears to drive the supporting body to rotate.

The heat exchange device of the waste heat boiler 21 is a closed water circulation pipe 25, the water circulation pipe is connected to the steam inlet and outlet of the steam turbine, the boiler feed water pump group 23 is arranged on the water circulation pipe, and the superheated steam generated by the heat exchange device The steam turbine 22 is driven to do work externally, and the low-pressure steam after work is condensed and then pressurized by the boiler feed water pump unit 23 for the heat exchange device to circulate.

The cantilever of the distributor is provided with a cantilever support 73, and by controlling the rotation speed of the distributor, the feeding speed is controlled to keep the sealed tube filled with hot ore all the time.

Referring to Fig. 7, the compensator 5 is a flexible short pipe, including an internal wear-resistant sleeve 53, and a section of short steel pipe 55, steel Two short pipes 58 and a stainless steel corrugated sealing pipe 56 are connected and fixed between the two steel short pipes. The wear-resistant sleeve 53 is divided into upper and lower sections, with an oblique annular expansion joint 52 in the middle for the compensator Telescopic movement, the hard heat insulation layer 54 is fixed between the steel short pipe one described in the previous section and the wear-resistant casing, and the flexible heat insulation layer 57 is fixed on the outer wall of the wear-resistant casing between the two short steel pipes .

After being crushed by the crusher from top to bottom, the high-temperature material or hot ore material enters the hot ore hopper at the lower part and then enters the closed system for closed-circuit transmission and feeding. It first passes through the compensator and the sealing tube and falls to the distribution plate of the distributor in the lower deceleration chamber. On the upper side, the material is evenly distributed into the heat exchange chamber through the cantilever with a launder of different lengths, and then discharged to the conveyor belt in the shell of the unloader through the unloading hopper at the lower part, and then transferred to the guide trough of the unloader and discharged to the belt conveyor out;

Referring to Figures 1, 9, and 10, the present invention uses a method for recovering waste heat from high-temperature materials in the above-mentioned system. The circulating cooling gas is driven by a circulating fan to circulate in a closed circuit in a closed system, and enters the cold air main pipe from the waste heat boiler. There is a release branch pipe, which is controlled by a regulating valve. A small part of the cold air is discharged into the atmosphere by the induced draft fan after passing through the release branch pipe and the dust collector. Part of the cold air enters the outer shell of the air distribution chamber through the cold air main pipe, enters the ventilation hole, and then enters the heat exchange chamber. In the heat exchange chamber, it completes countercurrent heat exchange with the hot sintered ore to raise the temperature. After passing through the material layer, the heat circulation air enters the deceleration chamber upwards. After completing deceleration and dust reduction, it enters the waste heat boiler through the hot air main pipe, and the circulating hot air enters the next cycle again after heat exchange and cooling in the waste heat boiler.

In the above method, the superheated steam generated by the waste heat boiler drives the steam turbine to do work through the water circulation pipeline, and the low-pressure steam after the work is condensed and then pressurized by the boiler feed water pump group for the boiler to circulate heat exchange.

In the above method, another small part of the air in the controllable environment enters from the material guide groove, enters the heat exchange chamber through the discharge port above the unloader, completes heat exchange and temperature rise with the hot sintered ore in the heat exchange chamber, and passes through the material The thermal circulation air after the layer enters the deceleration chamber upwards and joins in the deceleration chamber; a small amount of air enters the preheating above the hot ore hopper and is heated through the sealed tube. The heated hot air all enters the deceleration chamber to complete the deceleration and dust reduction .

The working principle of the present invention is shown in Fig. 1, Fig. 9 and Fig. 10. The high-temperature material or hot sintered ore is crushed by the crusher 1 and enters the high-temperature material or hot ore hopper 2, gathers in the lower part of the hot ore hopper 2, passes through the compensator 5 and the sealing tube 6 falls on the distribution plate of the distributor 7, and the distribution plate distributes the hot sintered ore to the multiple swirl troughs connected to it, and fills the discharge port along multiple annular surfaces according to the principle of equal thickness distribution. In the heat chamber 10, the heat exchange chamber 10 is a circular cavity, and the hot sintered ore is in the heat exchange chamber 10, and the circulating air from bottom to top is countercurrently exchanged for heat, and the cold sintered ore after heat exchange is cooled by the lower part of the heat exchange chamber. The evenly distributed conical unloading hopper is discharged from the discharge port, and the discharged cold sintered ore is transported into the material guide trough 14 by the unloader 13 below each discharge port, and then transported to the next process.

Wherein the upper edge support position of the hot ore hopper 2 is equipped with a weighing sensor 3, and the hot ore hopper 2 is connected with the upper and lower equipment by a flexible seal to facilitate weighing, and the lower part of the cone section of the hot ore hopper 2 is equipped with a bulk crusher 4, when When it is detected that the weight of the hot ore hopper 2 is abnormally increased, it is determined that the lower opening of the hopper is blocked, and the large block crusher 4 is started to break and dredge. A dredger 12 is installed at the discharge port at the bottom of the heat exchange chamber, and a sensor for monitoring material flow is installed in the shell of the unloader. When it is detected that the material on the unloader 13 is cut off, the dredge 12 is started to dredge. The water sealing structure 9 is the sealing structure between the distributor and the inner bucket of the heat exchange chamber 10; after the circulating air is heat-exchanged and cooled in the waste heat boiler 21, see Fig. 1 and Fig. 18 is provided with a release branch pipe 181, which is controlled by the regulating valve 24. A small part of the cold air is discharged into the atmosphere by the induced draft fan 17 after being dedusted by the dust collector 16. The purpose of discharging a small part of the gas is to achieve the lack of gas in the heat exchange chamber. In the negative pressure working state, most of the cold air enters the outer casing of the air distribution chamber 11 through the cold air pipe 18, enters the ventilation hole 117, and then enters the heat exchange chamber. The discharge port above the machine 13 enters the heat exchange chamber, completes the heat exchange with the hot sintered ore in the heat exchange chamber 10, and heats up the temperature after passing through the material layer. There is also a small amount of air entering the preheating above the hot ore hopper, and is heated through the sealed tube 6, and the heated hot air enters the deceleration chamber 8 to complete the deceleration and dust reduction, and enters the waste heat boiler 21 through the hot air main pipe 20. After heat exchange and cooling in the boiler 21, enter the next cycle again. The superheated steam generated by the waste heat boiler 21 drives the steam turbine 22 to do work externally, and the low-pressure steam after work is condensed and then pressurized by the boiler feed pump unit 23 for use by the boiler.

1. Description of the function of each device component

1. Crusher 1, hot ore hopper 2, weighing sensor 3, and bulk crusher 4 are all traditional charging preparation equipment, which crush and divert hot sintered ore, and detect the blockage of the discharge port of the hopper. Breaks up large pieces that block the hopper.

2. The compensator 5 has a flexible connection structure. There are wear-resistant conduits and heat insulation layers with movable gaps inside, and stainless steel corrugated sleeves outside. At the same time, three process requirements of sealing, heat insulation and wear resistance are guaranteed. It is a soft connection between the hot ore hopper and the sealing pipe, which plays the role of matching weighing and sealing. The wear-resistant conduit in the compensator prevents the material from directly contacting the stainless steel corrugated plate of the compensator, and at the same time plays a role of heat insulation. The bellows is an external retractable corrugated cross-section short pipe in the compensator, which is made of heat-resistant stainless steel and plays the role of isolating rigid connections and sealing. The short steel pipe structure of the compensator plays the role of installation and support. The wear-resistant casing is divided into upper and lower sections, and there is an oblique circular expansion joint in the middle for the expansion and contraction of the compensator. The hard heat insulation layer plays the role of heat insulation and support. The flexible heat insulation layer has the functions of heat insulation and dust prevention. Positioning boss 59 plays the installation positioning function.

3. The function of the sealing tube 6 is to use the blocking effect formed by the hot material column inside it, and it is used in conjunction with the distributor 7 at the lower part. The tray in the center of the distributor has a guide impeller structure to adjust the gap between the tray and the sealing tube. To the appropriate position, by controlling the rotation speed of the distributor, control the feeding speed, and always keep the sealed tube filled with hot ore.

4. The distributor 7 is a distributing device with a tapered center and several cantilever troughs of different lengths distributed around it. Through continuous rotation, the material falling from the sealed tube is evenly filled into the heat exchange chamber 10 according to the same thickness. , wherein the function of the water seal 9 is to block the gap between the rotating device of the distributor 7 and the heat exchange chamber to prevent air leakage. Distributor tray 1 function: to lift the sintered ore falling from the dosing tube, and at the same time distribute the sintered ore to several spiral arm chutes distributed evenly along the circumference. The blades are set according to the number of the swing arm chute. By rotating together with the distributor, the material on the distribution tray is pushed out from the discharge port to the surroundings under the action of gravity, and pushed into the chute. The swing arm supports support and reinforce the swing arm. , The swing arm chute is composed of an internal wear-resistant liner and an external support frame, which is responsible for diverting the distributed materials to the corresponding cloth ring surface. The blanking port set along the same direction of the circumference is a redirection guide chute part, which can accurately locate the blanking point on the swing arm chute, control the position of the material drop point, and the support body integrates the swing arm chute, distribution tray, and swing arm support The positioning support is also the connection between the distributor and the external drive and support mechanism. It has the functions of support, transmission and sealing. The driving support mechanism of the distributor can adopt the structure of upper suspension and sealing, or the structure of lower support and sealing. Can be selected according to the specific situation. The blanking points of different swing arm chutes move along different circular rings, and the cloth area controlled on both sides of each circular line is equal

5. The heat exchange chamber 10 is an annular chamber as shown in Figure 3. The hot sintered ore exchanges heat with the circulating air in the heat exchange chamber 10, and the lower part is evenly distributed along the circumferential direction with multiple discharge ports. The cold ore is evenly discharged through multiple discharge ports. The heat exchange chamber 10 includes three layers: a heat-resistant and wear-resistant layer, a heat-insulating layer, and a steel structure shell, which play the roles of wear-resisting, heat-insulating and supporting. The annular cross-section cylindrical cavity enclosed by the inner and outer shells is the working area for the countercurrent heat exchange between the hot sinter and the circulating air. Insulate the heat transfer in the heat exchange chamber to the outside. The middle layer between the shell and the wear-resistant layer is made of lightweight refractory heat-insulating castable, which also plays the role of heat insulation and connection support. The fire-resistant wear-resistant layer is on the inner and outer shells. The working layer directly in contact with the hot sinter is made of wear-resistant and heat-resistant materials. The dredging machine 12 is a device for dredging the blockage at the discharge port. Each discharge port is equipped with one device. When the sensor detects that the material on the unloader 13 is cut off, it proves that there is shed material at the discharge port, and the dredger is automatically started. 12 dredging, destroying the shed material phenomenon to make the material flow unimpeded, and under the normal state, the conveying material rod shrinks out of the material layer. The dredge machine is a traditional electro-hydraulic pusher, which is a high-thrust electro-hydraulic push rod. The driver is the motor and hydraulic component assembly of the electro-hydraulic push rod, which drives the hydraulic cylinder to act according to the command. The wear-resistant guide rod is the working part of the dredge machine. It is driven by the hydraulic cylinder and reciprocates obliquely downward to dredge the material that blocks the discharge port. When the machine is stopped, the guide rod shrinks to the outer edge of the guide support to maintain the inner wall of the tapered discharge hopper. cavity continuity. The sealing guide support is the guide support on the upper part of the wear-resistant guide rod of the dredge machine, and is provided with a sealing ring to play the role of guiding, supporting and sealing. The guide support is the guide support of the lower part of the wear-resistant guide rod of the dredge machine, which acts as a guide and a support.

6. The unloader 13 is a traditional cold ore conveying equipment, which is responsible for evenly transporting the sintered ore falling from each discharge port to the material guide trough 14 under the belt conveyor. The shell of the unloader 13 and the material guide trough 14 are made Form an integral sealing structure to prevent air leakage and dust, and the belt conveyor 15 is responsible for collecting and transporting the cold sintered ore to the next process.

7. The air distribution chamber 11 is a large ring-shaped air supply channel. The wind evenly enters the lower part of the heat exchange chamber through the ventilation holes 117 on the upper part of the tapered discharge hopper, and rises evenly under the negative pressure of the deceleration chamber to achieve uniform heat exchange. The outer casing of the annular air distribution chamber is composed of the top annular top plate, the outer wall annular vertical plate and the lower annular bottom plate, which play the role of sealing and supporting, and form the air distribution chamber together with the inner enclosure and the conical discharge hopper group. The installation cavity cylinder 112 of the dredge machine that each discharge hopper is installed plays a supporting and sealing role. Dredge machine guide hole 113 is the location, support, guide hole of dredge machine barrel material bar. The conical discharge hopper guides and discharges the material above the conical bottom surface evenly, and at the same time guides the cooling air evenly into the heat exchange chamber through the lining plate and the ventilation holes of the shell. The discharge port discharges the cooled sinter evenly. The inner casing of the annular air distribution chamber is composed of a side wall annular vertical plate, which plays the role of sealing and supporting. The ventilation channel is a conical hopper wear-resistant lining plate and a steel structure shell. All the circular through holes on the body are channels for the cold air in the air distribution chamber to enter the heat exchange chamber.

8. The deceleration chamber 8 is a cylindrical cavity with a tapered section, which can decelerate the hot air and reduce dust by gravity. Blanking hole 81 function: install the through hole of the sealing pipe under the hot ore hopper, the sealing pipe is installed and positioned, and the ring seam is welded dead or the root of the pressure plate is sealed. Evenly distributed hot blast branch outlets 82 are welded and fixed after being docked with the hot blast branch pipe in place. The interior of the deceleration chamber is sprayed with refractory heat insulation material and steel structure shell, which plays the role of support and sealing. The refractory heat insulation layer is made of light refractory spray paint and tortoise shell net anchor nail structure.

9. The function of the dust collector 16, the induced draft fan 17 and the regulating valve 24 is to control the volume of the exhaust gas. To control the reasonable negative pressure in the heat exchange chamber 10. The purpose of the negative pressure in the heat exchange chamber is to avoid pollution caused by dust at the inlet and outlet.

10. The hot ore hopper 2 is a conical hopper that collects diversion heat sintered ore. There are wear-resistant liners 219 and heat insulation layers 210 inside. The fixed bracket 44 of the large crusher is welded and fixed on the upper part of the discharge port at the bottom of the hopper. Supporting and sealing function, the supporting base of the hopper has a load cell 3, (the load cell is a standard part) which can detect the weight of the material in the hopper in real time. The electro-hydraulic pusher is a traditional high-thrust electro-hydraulic push rod, (the electro-hydraulic push rod is a standard part) the main actuator of the large block crusher, and it is installed and used in pairs by a group of four. The driver is the motor and hydraulic assembly of the electro-hydraulic push rod, which drives the hydraulic cylinder to act according to the command. The fixed bracket is the fixed frame of the electro-hydraulic push rod, which is welded on the shell of the hopper to play a supporting role. The guide frame is a guide frame for inserting the knife. The inserting knife is a rectangular inserting knife, the shape of the front end is the same as that of the bottom section of the hot ore hopper. When it is not working, the inserting knife is retracted, and its front end fits with the inner cone of the hopper to ensure the normal material flow. In the working state, there are 2 sets of inserting knives At the same time, insert it into the center, crush the large pieces that block the discharge port, and dredge the discharge port. The wear-resistant liner is the wear-resistant liner in direct contact with the material in the hot ore hopper. The heat insulation layer is the heat insulation layer between the wear-resistant liner in the hot ore hopper and the outer steel structure shell. Steel structure shell The steel structure shell inside and outside the hot ore hopper plays the role of support and seal.

2. Description of operation method

1. The sintering process should ensure the continuous and stable supply of hot sintered ore, and at the same time ensure the stability of its composition and temperature, and increase the average temperature of hot ore as much as possible.

2. The operating principle of this process system is to reduce the circulating air volume as much as possible and increase the temperature of hot flue gas under the premise of ensuring the discharge temperature of sintered cold ore, and at the same time control the exhaust temperature of waste heat boiler at an appropriate temperature.

3. The filling speed of hot sintered ore is adjusted by controlling the speed of the speed of the distributor 7. The operating principle is to minimize the adjustment of the speed of the speed and keep the charging speed balanced.

3. Special instructions

How the invention works

The invention carries out process design based on the principle of countercurrent heat exchange between hot and cold medium, and the principle of highest heat exchange efficiency. By ingeniously designing the material distribution method, the uniformity of material loading without segregation and the balance and stability of the heat exchange process are realized, thereby realizing efficient waste heat utilization. . The invention utilizes the cooling air closed circuit circulation method to make the gas pass through the high-temperature material of seven or eight hundred degrees, reduce the oxygen content in the gas by less than 5%, and make the raw sintered ore unable to be sintered twice and cause environmental pollution.

Four, the key point of the present invention and want to protect the point

Use sealed tubes and distributors to achieve sealing and uniform distribution to avoid material segregation and heat exchange, and use the technology of closed-circuit circulation of heat exchange gas to conduct vertical cooling and heat exchange of sinter,

Key points: A. Use the sealing tube 6 to cooperate with the distributor 7 to achieve sealing and uniform distribution, and the heat exchange chamber is evenly ventilated, the heat exchange is thorough, and high-efficiency heat exchange is obtained.

B. The material distributor is equipped with multiple material guide grooves of different lengths and volumes to achieve uniform material distribution without segregation.

C. The cold air pipe 18 is provided with a miniature dust collector 16, a miniature induced draft fan 17, and a regulating valve 24. The exhaust regulating valve 24 is used to regulate the amount of exhausted gas, and to control the negative pressure in the heat exchange chamber and the deceleration chamber to achieve Negative pressure is formed between the material inlet and the material outlet to avoid dust and eliminate pollution.

D. Using the technology of heat exchange gas closed-circuit circulation, the gas passes through the high-temperature material of seven or eight hundred degrees, and the oxygen content in the gas is reduced by less than 5% for recycling, so that the raw sintered ore cannot be sintered for the second time. It avoids the secondary sintering of incompletely cooked raw materials and oxygen, and the bad consequences of production stoppage caused by being integrated in the heat exchange chamber cannot be discharged.

E. The heat exchange chamber 10 is designed in a ring shape, so that the cooling gas is fed in from the lower part of the inner and outer rings at the same time, so that the distribution of the cooling gas is more uniform and the heat exchange is more thorough.

F. The dredging machine 12 uses electro-hydraulic push rods, or hydraulic push rods and pneumatic push rods to destroy the phenomenon of shed materials and make the material flow smooth.

Claims (10)

1. high-temperature material waste heat recovery station system, including feeding equipment, distribution device, heat-exchanger rig, feeding device, feature exist In the feeding equipment includes crusher 1, hot mineral aggregate bucket 2, compensator 5, seal pipe 6；Described in the crusher feed opening connection Hot mineral aggregate bucket 2, hot mineral aggregate bucket lower part discharge port connect compensator, and the compensator lower part connects seal pipe；It is described broken Machine 1, compensator 5, is connected inside seal pipe 6 at hot mineral aggregate bucket 2；

The distribution device includes distributing device 7, and 7 top of the distributing device is the upward surface in conical pinnacle in a center Material separating disc 71 with impeller inducer 72 stretches out several different length around along the taper direction of the material separating disc Pan Bi Cantilever 70, the flow-guiding mouth of chute 74 and the corresponding material separating disc on the cantilever on setting length direction, each chute Lower part be arranged in the circumferential direction, equidirectional blanking port 75, the cloth track loop wire 77 of the blanking port is annulus, described point Charging tray bottom attachment support body 76, motor 78 drive the supporter to rotate；The pinnacle of the material separating disc faces the sealing 6 lower nozzle of pipe；The heat-exchanger rig includes heat exchanging chamber 10, velocity-reducing chamber 8, cloth wind chamber 11, waste heat boiler 21, circulating fan 19, cold Wind manifold 18, hot-blast main 20；The heat exchanging chamber 10 is a ring-shaped cylinder cavity around supporter setting；

8 lower part of the velocity-reducing chamber is divided into the annular truncated cone-shaped 84 that the lower end upper ends Nei Shou extend out, top is divided into the suitable for reading of cylinder 83 Closed shell, the annular truncated cone-shaped 84 of 8 lower part of the velocity-reducing chamber is around the supporter；The heat exchanging chamber external annulus upper limb week Circle connects 8 shell of velocity-reducing chamber, 85 bottom；The heat exchanging chamber internal ring wall upper limb border connects 8 inner casing of velocity-reducing chamber, 87 bottom Portion, 8 inner casing upper peripheral edge of the velocity-reducing chamber are connected on the supporter outer wall；Connect inside the velocity-reducing chamber and the heat exchanging chamber It is logical；The corresponding seal pipe is equipped with material-dropping hole 81 in the middle part of the velocity-reducing chamber top lid wall, and the seal pipe is inserted into the blanking port Sealing coordinates, and equally distributed hot blast manifold mouth 82 is arranged around blanking port on the top lid wall；The material separating disc, cloth cantilever Inside the velocity-reducing chamber；

The cloth wind chamber 11 is that annular housing is docked in the heat exchanging chamber lower part, the cloth wind intracavitary, external annulus and the heat exchange Device internal ring wall, external annulus lower edge Butt sealing are fixed and internal connection, and the annular housing bottom of the cloth wind chamber is wholely set more A cone dump skip 114；Taper dump skip upper part of the housing is all evenly distributed with circular vent 117；The cloth wind chamber peripheral hardware There is the outer casing 111 of annular, the outer casing external annulus upper end head cover is fixed with the closing of heat exchanging chamber external annulus lower part, described Outer casing internal ring wall upper limb is fixed with heat exchanging chamber internal ring wall root edge closing, and the outer casing inner and outer rings wall root edge sets bottom cover Closing is fixed on around the taper dump skip feed opening；The outer casing and the cloth wind intracavitary, external annulus and the taper Cavity is constituted between dump skip shell, part of the dump skip with ventilation hole is enclosed in the outer casing cavity；It is described Air inlet is arranged in outer casing 111；

The feeding device includes unloader 13, unloader shell 131, and the unloader is in the taper dump skip feed opening Multiple conveyer belts of lower section symmetrical centre setting, the unloader shell are that each conveyer belt is trapped among to internal round sealed Shell, is arranged deflector chute 14 among the unloader outer casing bottom, and the deflector chute lower part is arranged material guide port, in the conveyer belt The corresponding deflector chute discharging in end；The material guide port lower part setting belt feeder transports mineral aggregate outward；The taper dump skip blanking Mouth stretches into the unloader outer casing upper cover interior sealing cooperation；

21 top of the waste heat boiler connects the hot wind nozzle of the velocity-reducing chamber by the hot-blast main 20 with each hot blast manifold, The waste heat boiler lower part connects the air inlet of casing external annulus lower part outside the cloth wind chamber by the cold wind manifold 18, described Circulating fan 19 is set on cold wind manifold；Heat-exchanger rig is set in the waste heat boiler.

2. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that the outer casing of the cloth wind chamber 111 fix multiple dredging machine mounting cylinders 112 along border, and dredging machine pilot hole 113 is arranged on the taper dump skip shell, described The electro-hydraulic pusher 121 of dredging machine is supported in the dredging machine mounting cylinder, and dredging push rod 123 pierces the dredging machine pilot hole The taper dump skip feed opening 115 is stretched into dredge；Setting monitoring Flow of Goods and Materials sensor, is unloaded when detecting in unloader shell On material machine 13 when material cut-off, starts dredging machine 12 and dredge；

The Support Position of the hot mineral aggregate bucket 2 is equipped with weighing sensor 3, and the hot mineral aggregate bucket 2 is by flexible sealing and up and down Equipment is tightly connected, and the cone pars infrasegmentalis of the hot mineral aggregate bucket 2 is equipped with chunk breaker 4, when the weighing sensor 3 detects institute When stating hot 2 gravimetric anomaly of mineral aggregate bucket increase, hopper feed opening putty is judged, then start the broken dredging of the chunk breaker 4；

Chunk breaker 4 is circumferentially arranged on the 2 feed opening wall of hot mineral aggregate bucket to be supported on fixing bracket 44, the bulk is broken Broken machine 4 includes radial slotting tool 47：The slotting tool is that the rectangular plate of a block length is inserted into the hot mineral aggregate bucket, front end face shape with The hot mineral aggregate bucket bottom sidewall is coincide, and when off position, slotting tool is withdrawn, and front end face agrees with sealed material with hopper inner conical surface Bucket ensures stream in general, when working condition opposite two groups of slotting tools are inserted into center simultaneously, the bulk pressure of card resistance feed opening It is broken, dredge feed opening；

The parietal layer structure of the hot mineral aggregate bucket 2 is wear-resistant liner 219, thermal insulation layer 210, steel structure casing 211 from inside to outside；It is described The parietal layer structure of heat exchanging chamber 10 is heat-resistant antifriction layer 106, thermal insulation layer 105, steel structure casing 103 from inside to outside；The velocity-reducing chamber 8 Parietal layer structure from inside to outside be thermal insulation layer 86, steel structure casing 85.

3. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that set on the cold wind manifold 18 It sets one and diffuses branch pipe 181, described diffuse sets gradually regulating valve 24, deduster 16 and air-introduced machine 17 on branch pipe.

4. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that 7 supporter of the distributing device is set It is heat-insulated to set 9 seal clearance of watertight construction；The motor 78 drives gear band to move the supporter rotation.

5. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that the heat exchange of the waste heat boiler 21 Device is closed water circulating pipe 25, water circulating pipe connection steam turbine into, steam drain, on the water circulating pipe Boiler feed-water pump 23 is set, and the superheated steam driving steam turbine 22 that the heat-exchanger rig generates externally does work, low after workmanship It is pressurizeed by boiler feed-water pump 23 after pressing steam condensed and is recycled for the heat-exchanger rig.

6. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that the cantilever of the distributing device is arranged Cantilever support 73 controls blanking velocity, remains in seal pipe and fill up shape by hot mine by controlling the velocity of rotation of distributing device State.

7. high-temperature material waste heat recovery as described in claim 1 station system, which is characterized in that the compensator 5 is a kind of soft Short tube is connected, includes internal wear-resistant sleeve 53, each to fix a section steel short tube 1, steel short for the wear-resisting pipe outer wall upper and lower Pipe 2 58, a stainless steel ripple seal pipe 56 are fastened between two steel short tubes, and it is upper that the wear-resistant sleeve 53, which divides, Two section down, intermediate there are one oblique annular retractables to stitch 52, upper to save the steel short tube one and wear-resistant sleeve for compensator telescopic movable Between fix hard heat-insulating layer 54, the wear-resistant sleeve outer wall being located between the two section steel short tubes fixes flexible thermal insulation layer 57。

8. a kind of high-temperature material exhaust heat recovering method, which is characterized in that high-temperature material or hot mineral aggregate are from top to bottom through crusher powder After broken, into the hot mineral aggregate bucket of lower part after enter the closed circuit transmission blanking of closed system, first compensated device, seal pipe fall on lower part and subtract On the distributing device material separating disc of fast intracavitary, through in the cantilever uniform distribution to heat exchanging chamber equipped with chute different in size, then through lower part Dump skip be dumped into the conveyer belt in unloader shell, be transferred to and be discharged to belt feeder in unloader deflector chute and transport；

Circulating cooling gas drives the closed cycle in closed system by circulating fan, enters cold wind manifold by waste heat boiler, It is set on cold wind manifold there are one branch pipe is diffused, is controlled by regulating valve, sub-fraction cold wind is by diffusing branch pipe, deduster dedusting Air is discharged by air-introduced machine driving afterwards, it is to be in negative pressure work shape to reach heat exchanging chamber gas deficiency to be arranged outside partial gas State, most of cold wind enters through cold wind manifold outside cloth wind chamber enters back into heat exchanging chamber after casing into ventilation hole, in heat exchanging chamber with Heat sinter completes countercurrent flow heating, and the thermal cycle wind after the bed of material is upwardly into completion deceleration depositing dust in velocity-reducing chamber, warp Hot-blast main is crossed to enter in waste heat boiler, circulating air exchange heat in waste heat boiler it is cooling after be again introduced into and recycle next time.

9. a kind of high-temperature material exhaust heat recovering method according to any one of claims 8, which is characterized in that the overheat that waste heat boiler generates is steamed Vapour externally does work through water circulating pipe driving steam turbine, and being pressurizeed by boiler feed-water pump after the low-pressure steam after workmanship is condensed supplies Boiler cycle heat exchange uses.

10. a kind of high-temperature material exhaust heat recovering method described in claim 9, which is characterized in that separately have the controllable ring of sub-fraction Air in border is entered by deflector chute, is entered heat exchanging chamber through discharge gate above unloader, is completed with heat sinter in heat exchanging chamber Heat exchange heating, the thermal cycle wind after the bed of material are upwardly into velocity-reducing chamber, converge in velocity-reducing chamber；Also a small amount of air is in warm Enter preheating above mineral aggregate bucket, and heated by seal pipe, the hot wind of heating fully enters and completes drop of slowing down in velocity-reducing chamber Dirt.