CN109163569B

CN109163569B - A divided vertical sinter cooler and sinter cooling method

Info

Publication number: CN109163569B
Application number: CN201710512374.5A
Authority: CN
Inventors: 温荣耀; 贺新华; 张震
Original assignee: Zhongye Changtian International Engineering Co Ltd
Current assignee: Zhongye Changtian International Engineering Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2023-11-14
Anticipated expiration: 2037-06-29
Also published as: CN109163569A

Abstract

A divided vertical sinter cooler. The divided vertical cooler (A1) includes a silo (1), a tower body (2), a divided frame (3), an air inlet device (4), and a discharge device. Cone bucket (5) and hot air outlet (9), wherein: the silo (1) is set directly above the tower body (2), and the dividing frame (3) is set in the tower body (2) and located in the tower body (2). ), the air inlet device (4) is set at the bottom of the tower body (2), and the discharge cone (5) is set below the tower body (2); the dividing frame (3) separates the inside of the tower body (2) The lower part is divided into multiple independent spaces; the hot air outlet (9) is arranged at the upper part or top of the tower body (2). The invention divides the tower of the vertical cooler into several areas to ensure the uniformity of air flow and material flow, and uses counter-current heat exchange to greatly improve the waste heat recovery rate.

Description

Division vertical type sinter cooler and sinter cooling method

Technical Field

The invention relates to a sinter cooler and a sinter cooling method, in particular to a cellular vertical sinter cooler and a sinter cooling method, belonging to the field of iron making and the field of environmental protection.

Background

In modern sintering processes, "cooling" is one of the more critical processes. After the sintering of the sintering machine, high Wen Chengpin ore is formed, and the problem of how to perform protective cooling on the high Wen Chengpin ore on the premise of not affecting the quality and the yield of the high Wen Chengpin ore is solved, so that the high Wen Chengpin ore can be conveyed into a finished ore bin through a belt conveyor, and meanwhile, the heat-generating energy carried by the high Wen Chengpin ore is perfectly recycled, so that the high Wen Chengpin ore is a constant research problem for the technical personnel in the industry. Since the 60 s of the 20 th century, the cooling process of sintered ores has been rapidly developed, and is mainly divided into three categories, namely belt cooling, ring cooling and disc cooling. In the later market competition, the belt cooling technology is eliminated, and the rest ring cooling technology and the disc cooling technology have advantages and disadvantages. But comprehensively comparing, the disc cooler has better utilization rate of the waste heat than the ring cooler (all sensible heat of the sinter is recycled), so the disc cooler is widely applied to foreign markets, and the patent also describes the technology of the disc cooler.

The technology of the disk cooler starts to develop from the 70 s, and the disk cooler is started to transversely cool the disk, namely, cooling air flows from the inner ring to the outer ring of the disk cooler, transversely passes through a material layer to be cooled to exchange heat with the material layer, and the cooling air after heat exchange is directly discharged to the atmosphere. The technology of the dish cooler is an exhaust type longitudinal dish cooling technology proposed by Hitachi, japan and well-contained steel. The technology adopts air draft, cooling air is pumped into the bottom of the material to be cooled from the atmosphere, then longitudinally passes through the material layer upwards, and finally is blown out from the upper part of the material layer to enter the subsequent working procedures. This solution has been greatly optimized and advanced compared to the very beginning one, which is described in detail below.

JP2008232519a (mitsubishi hitachi and well-held steel, hereinafter D1) discloses an induced draft type longitudinal disc cooling technique, see fig. 1 therein: the hot sinter falls into the feeding chute from the tail part of the sintering machine, and is piled up into a material column with a certain height in the chute, so that the effect of uniform blanking is achieved on one hand, and the effect of preventing the air from flowing through the feeding port is achieved on the other hand. Mineral aggregate continuously passes through the hood downwards and then enters the box body of the tray cooler to be pushed into a material column with a certain height. Meanwhile, the air near the disc cooler is sucked into the material column through the louver air inlet device under the influence of the negative pressure of the exhaust fan, and passes through the material column from bottom to top to exchange heat with the material column, and the air after heat exchange passes out of the top surface of the material column and enters the air outlet to be sent to the gravity dust remover and the waste heat boiler, and finally passes through the exhaust fan and is discharged. The sintered material cooled by air forms an annular stacking area with a cross section of a triangle with a stacking angle of 37 degrees at a tray at the lower part of the tray cooler, and when the sintered material is rotated to a discharging area, the sintered material is scraped by a scraping plate device, and the cooling process is completed to enter the next process link.

Although the 'induced draft type longitudinal disc cooling technology' of Mitsubishi Hitachi and Zhongsheng steel has obvious progress compared with the conventional technology, the following five defects still exist:

1) The overall height requirement of the device is too high: because the 'induced draft type longitudinal disc cooling technology' adopts an induced draft mode, a material seal, namely a material column piled in a feeding chute in the figure 1 of D1, is necessarily arranged at the position of a feeding inlet, and the height of the material seal is 1.2-1.5 times of the height of the material column in the box body of the disc cooler. Therefore, the height of the whole disc cooling device is increased intangibly, and the elevation of the whole sintering machine is required to be increased or the civil engineering plane of the disc cooling machine is required to be dug downwards during construction and installation. Whichever way is selected, the method can cause high primary investment cost, and is not cost-effective in economic index;

2) The open circulation of the wind flow leads to low waste heat utilization rate and environmental pollution: because the wind flow of the 'induced draft type longitudinal disc cooling technology' is in open circuit circulation, the air discharged from the waste heat boiler is directly discharged outwards and is not recycled, so that more than 100 degrees of sensible heat of the air is wasted, and the discharged air contains a large amount of small particle dust, so that the air is polluted by particles to a certain extent;

3) The material at the feed inlet is seriously worn: because the material seal is arranged at the feeding chute by the 'induced draft type longitudinal disc cooling technology', a friction distance exists between the lower part of the material seal and the upper layer of the material surface in the disc cooler box body. At the moment, the sintering material is easy to pulverize and crush when rubbed under the double-layer severe working condition of high temperature and upper material column extrusion, thereby reducing the yield of the sintering machine;

4) The environmental pollution is serious: because of the negative pressure air draft technology adopted by the air draft type longitudinal disc cooling technology, a sealing cover device is not arranged at the tray at the lower part of the box body. Thus, when the sinter is scraped by the scraper device, a large amount of fine particles and dust are easy to splash. And in case the exhaust fan is in fault maintenance, all the material dust pushed around the disc cooler can enter the atmosphere, and the operation environment beside the disc cooler is affected adversely.

5) The heat efficiency of the waste heat boiler is not the highest: because the air passing through the material layer is not accurately classified according to the air temperature by the 'induced draft type longitudinal disc cooling technology', and is fully mixed into the waste heat boiler, when the air temperature at the outlet of the low-temperature section is too low, the temperature of the air entering the waste heat boiler is inevitably lowered, and therefore the heat efficiency value of the waste heat boiler is reduced.

At present, the sintering ore cooling mainly adopts a traditional belt type cooler or a ring type cooler based on the principle of rapid cooling by strong air and one-time loading and unloading cooling. The following problems are common in the agglomerate coolers of the prior art: 1. the air leakage is serious and the electricity consumption is high. The three cooling modes are that the sintering ore is placed on the trolley, the sintering ore is cooled by blowing or exhausting, the sealing between the trolley and the bellows is difficult to solve, the common air leakage rate is more than 20 percent, even up to 50 percent, and the cooling power consumption is increased; 2. the heat exchange is insufficient. The cross flow heat exchange between the sinter and the cooling air in the belt cooler or the ring cooler has poor heat exchange effect; the stacking height of the sintered mineral aggregate layer is low, the heat exchange time of the sintered mineral and cooling air is short, and the heat exchange is insufficient; 3. the waste heat utilization efficiency is low. The two ends of the cooler can not be sealed and a large amount of wild wind is permeated, and the wild wind does not pass through the sintering material layer, so that the power and the power consumption of the fan are increased, and the temperature of the flue gas after heat exchange is greatly reduced; in the existing sintering machine waste heat power generation system, air is generally taken from sections I and II with higher temperature in a cooling machine or a circular cooling machine, the temperature difference between a sintering ore and a cooling air heat exchange end is large, the flue gas temperature is low, the loss of the power-making capability is large, and the waste heat utilization rate is low; 4. the fluctuation of the waste heat parameters is large. The fluctuation of the yield, the temperature and the components of the sinter in the production process is large, so that the flue gas parameters after heat exchange also have large fluctuation, and the influence on the waste heat utilization is large; 5. the belt type cooler or the annular cooler has the advantages of large volume, high investment, high energy consumption, large equipment maintenance workload and long engineering investment recovery period.

Therefore, the limitation of traditional ring cooling or belt cooling is broken through, and the development of a process and technical equipment for efficiently recovering the sensible heat of the sinter is a necessary path for energy conservation and environmental protection in the sintering industry.

Disclosure of Invention

The invention provides a cellular vertical sintering cooler, which is completely static, has no moving parts, basically has no air leakage, adopts countercurrent heat exchange, and greatly improves waste heat recovery. Is characterized in that the vertical tower is divided into a plurality of areas, thereby ensuring the uniformity of wind flow and material flow.

According to a first embodiment of the present invention, a divided-cell vertical sinter cooler is provided.

The utility model provides a vertical sinter cooler of division, this vertical cooler of division includes feed bin, tower body, division frame, hot-blast exit, hot-blast device, row's material awl fill. Wherein: the feed bin sets up directly over the tower body. The division frame is arranged in the tower body and is positioned at the lower part of the tower body. The air inlet device is arranged at the bottom of the tower body. The discharge cone hopper is arranged below the tower body. The lattice divides the tower interior lower portion Fang Fenge into a plurality of independent spaces. The hot air outlet is arranged at the upper part or the top of the tower body.

Preferably, the divided-grid vertical cooler further comprises a material height adjusting device. The tail end of the storage bin is provided with a straight pipe. The material height adjusting device is sleeved on the straight pipe.

Preferably, a first radiant heat recoverer is disposed within the tower proximate the tower top cover. Preferably, a second radiant heat recoverer is provided at the front end of the hot air outlet.

Preferably, the first radiant heat recoverer positioned at the top of the tower body adopts a hollow slab with a fan-shaped surface. Preferably, the second radiant heat recoverer adopts a plate fin type heat exchanger or a tube type heat exchanger.

Preferably, a discharging device or a plate type ore feeder is arranged below the discharging cone hopper.

In the invention, the air inlet device comprises a hood, an air supply pipeline and a fan. Wherein, the hood is arranged in the tower body. The fan is arranged outside the tower body. The air supply pipeline is connected with the hood and the fan.

Preferably, the tower body is square. The dividing wall divides the lower portion Fang Fenge of the tower body into 2 to 24 independent spaces, preferably 4 to 20, more preferably 6 to 16, and even more preferably 8 to 12.

Preferably, a hood is provided at the bottom of each independent space. The plurality of wind caps are connected with a fan after being connected in series through the air supply pipeline. Or each hood is connected with a fan through an air supply pipeline.

Preferably, a discharge cone is arranged below each independent space.

Preferably, the inner side of the lower part of the tower body and the inner side of the discharge cone hopper are provided with heat insulation layers.

In the invention, the hood comprises a support frame, a hood top cover, a plurality of conical cover plates and a hood air pipe. Wherein: the plurality of conical cover plates are sequentially arranged on the supporting frame. The diameter of the bottom of the conical cover plate increases from top to bottom. The hood top cap sets up in the top of the toper apron of top, and the hood tuber pipe sets up in the below of support frame and is connected with the support frame.

Preferably, an air flow channel is formed between the adjacent conical cover plates.

Preferably, the number of air flow channels is from 2 to 200, preferably from 5 to 100, more preferably from 8 to 50.

More preferably, the hood top cover is of a conical structure.

In the invention, the included angle of the hood top cover is larger than the cone angle of the cone-shaped cover plate.

In the present invention, the number of the conical cover plates is 4 to 80, preferably 6 to 70, preferably 8 to 50, more preferably 12 to 40, for example 18, 20 or 25.

In the present invention, the gap of the air flow channel is 3 to 100mm, preferably 5 to 80mm, more preferably 7 to 50mm, for example 15, 20, 25, 30mm.

In the present invention, the taper angle of the hood top cover is 20 to 150 degrees, preferably 30 to 120 degrees, more preferably 40 to 90 degrees.

In the present invention, the cone angle of the cone-shaped cover plate is 20 to 150 degrees, preferably 30 to 120 degrees, more preferably 40 to 90 degrees.

Preferably, the top cover is a wear-resistant top cover made of wear-resistant steel; the conical cover plate is made of wear-resistant steel.

Preferably, the lower part of the discharge cone hopper is provided with an adjusting rod.

Preferably, the tops of adjacent discharge cone hoppers are connected to each other, and the lower portions of the adjacent discharge cone hoppers are separated.

Preferably, the upper part of the discharge cone hopper is provided with a temperature measuring probe.

In the present invention, the discharging device is a double-layer vibratory feeder. The double-layer vibration feeder comprises a machine body support, an upper layer vibration groove, a lower layer vibration groove and a vibrator. The upper layer vibration groove and the lower layer vibration groove are arranged on the machine body support. The upper layer vibration groove is positioned above the lower layer vibration groove. The upper layer vibration groove and the lower layer vibration groove are respectively connected with the vibrator.

Preferably, the upper layer vibration tank and/or the lower layer vibration tank are/is provided with an adjusting device. The adjusting device adjusts the inclination angle of the bottom plate of the lower vibration tank.

Preferably, the vibrator includes an upper vibrator and a lower vibrator. The upper layer vibrator is connected with the upper layer vibration groove. The lower layer vibrator is connected with the lower layer vibration groove.

Preferably, the upper layer vibration groove and the lower layer vibration groove are arranged on the machine body bracket through springs.

Preferably, the divided-cell vertical cooler further comprises a control system. The control system is connected with the material height adjusting device, the first radiant heat recoverer, the second radiant heat recoverer, the air inlet device, the discharge cone hopper, the temperature measuring probe, the adjusting rod, the discharge equipment and the plate type ore feeder, and controls the operation of the material height adjusting device, the first radiant heat recoverer, the second radiant heat recoverer, the air inlet device, the discharge cone hopper, the temperature measuring probe, the adjusting rod, the discharge equipment and the plate type ore feeder.

In the present invention, the length of the straight pipe is 0.5 to 3 m, preferably 0.5 to 2.5 m, more preferably 1 to 2 m.

In the present invention, the divided-cell vertical cooler further includes: support, gear support, follow driving wheel, chain. Wherein: and a support is arranged on the outer side of the material height adjusting device. A gear bracket is arranged on the top cover of the tower body. The gear bracket is provided with a driven wheel. One end of the chain is connected with the support, and the other end of the chain penetrates through the top cover of the tower body to be connected with the driven wheel.

Preferably, the gear bracket is also provided with a transmission gear, and the transmission gear is connected with the driven wheel in a matching way.

In the invention, the transmission gear is a transmission gear reducer.

Preferably, the transmission gear is connected to a manual rocker or motor, which drives the transmission gear.

More preferably, the transmission gear is provided with a backstop.

In the present invention, the divided-cell vertical cooler further includes: and (3) a steel pipe. One end of the steel pipe is connected with the support, and the other end of the steel pipe penetrates through the top cover of the tower body to be connected with the chain. The other end of the chain is connected with the driven wheel.

Preferably, the steel pipe extends out of the top cover of the tower body. The length of the steel pipe extending out of the top cover of the tower body is 0.1-1 meter, preferably 0.2-0.7 meter, more preferably 0.3-0.5 meter.

In the present invention, the number of the holders is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A gear bracket is arranged right above each support. Each gear bracket is provided with a driven wheel. One end of each chain is connected with the support, and the other end of the chain is connected with the driven wheel.

In the invention, one end of each steel pipe is connected with a support. The other end of the steel pipe is connected with a chain, and the other end of the chain is connected with a driven wheel.

Preferably, the plurality of holders are symmetrically arranged on the outer side of the material height adjusting device.

In the present invention, the divided-cell vertical cooler further includes: support, chain, calabash support, calabash. Wherein: and a support is arranged on the outer side of the material height adjusting device. A top cover of the tower body is provided with a calabash bracket. The calabash is arranged on the calabash bracket. One end of the chain is connected with the support, and the other end of the chain penetrates through the top cover of the tower body to be connected with the lifting hook of the hoist.

Preferably, the divided-cell vertical cooler further comprises: and (3) a steel pipe. The chain is replaced by a steel pipe. One end of the steel pipe is connected with the support, and the other end of the steel pipe penetrates through the top cover of the tower body to be connected with the lifting hook of the hoist.

Preferably, the hoist is a manual hoist or an electric hoist.

Preferably, the steel pipe extends out of the top cover of the tower body. The length of the steel pipe extending out of the top cover of the tower body is 0.1-1.5 m, preferably 0.2-1.2 m, more preferably 0.3-1 m.

In the present invention, the number of the holders is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A calabash bracket is arranged right above each support. Each calabash bracket is provided with a calabash. One end of each chain is connected with the support, and the other end of the chain is connected with the hoist.

In the invention, one end of each steel pipe is connected with a support, and the other end of the steel pipe is connected with a hoist.

In the present invention, the divided-cell vertical cooler further includes: support, steel pipe, elevating gear. Wherein: and a support is arranged on the outer side of the material height adjusting device. The top cover of the tower body is provided with a lifting device, one end of the steel pipe is connected with the support, and the other end of the steel pipe penetrates through the top cover of the tower body to be connected with the lifting device.

In the present invention, the number of the holders is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A lifting device is arranged right above each support. One end of each steel pipe is connected with the support, and the other end of the steel pipe is connected with the lifting device.

In the invention, a plurality of lifting devices are connected with a lifting motor through a connecting rod and a transmission case.

Preferably, a counter is also included. The counter is connected with the lifting motor.

More preferably, the lifting device is a screw lifter.

In the present invention, there is no particular requirement for the first radiant heat recoverer to be installed at the top of the inner space of the tower body (i.e., below the top cover of the tower body), for example, a hollow slab of a sector-shaped face is employed, and the annular radiant heat recoverer is formed by assembling at the top of the inner space of the tower body.

The first radiant heat recoverer is connected with a first heat recovery pipeline, and the first radiant heat recoverer stores high-temperature steam and further conveys the high-temperature steam to the waste heat power generation system. The second radiant heat recoverer is connected with a second heat recovery pipeline, and the second radiant heat recoverer stores high-temperature steam and further conveys the high-temperature steam to the waste heat power generation system.

In the present invention, the first radiant heat recoverer and the second radiant heat recoverer each include a water inlet of the radiant heat recoverer and a steam outlet of the radiant heat recoverer.

According to a second embodiment of the present invention, a method of cooling sinter is provided.

A sinter cooling method or a method of cooling sinter in a divided-cell vertical sinter cooler according to the first embodiment, the method comprising the steps of:

(1) Sinter enters a feed bin of the divided-grid vertical cooler and continuously flows from top to bottom under the action of gravity; under the condition of free accumulation of materials, filling the materials around a lower port of a material height adjusting device, and moving the material height adjusting device up and down to realize the change of the material height;

(2) The air inlet device of the division vertical cooler conveys cooling gas (such as air) into the tower body through the hood, the cooling gas passes through the sinter material layers stacked in each independent space in the division vertical cooler from bottom to top, and carries out countercurrent heat exchange with the sinter, the temperature of the cooling gas is gradually increased after the heat exchange, the cooling gas is discharged through the sinter material surface in the division vertical cooler tower to form high-temperature hot air, and the high-temperature hot air is discharged through the hot air outlet; preferably, the high temperature hot wind is delivered to a waste heat utilization system;

(3) The sintered ore piled up in the tower body of the division vertical cooler is cooled by countercurrent heat exchange with cooling gas from bottom to top, enters a discharge cone hopper at the lower part of the division vertical cooler, and is discharged by a discharge device or a plate type ore feeder;

(4) The first radiant heat recoverer recovers radiant heat energy of the sinter to generate high-temperature steam, and the high-temperature steam enters the waste heat power generation system.

Preferably, the second radiant heat recoverer recovers radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system.

Preferably, the control system controls the operation of the material height adjusting device, the first radiant heat recoverer, the second radiant heat recoverer, the air inlet device, the discharge cone hopper, the adjusting rod, the discharge equipment and the plate type ore feeder according to the temperature detected by the temperature measuring probe.

Preferably, a temperature measuring probe is arranged corresponding to each discharge cone bucket, and the control system controls the operation of the corresponding discharge equipment or the plate feeder according to the temperature detected by each temperature measuring probe.

The grid vertical cooler also has a self-feedback discharging adjusting function. And detecting the temperature of the sintering ore in the corresponding area through a temperature measuring probe, when the detected temperature of the sintering ore in a certain circumferential position reaches a cooling effect, normally starting the discharging equipment (or the plate type ore feeder) below the discharging cone hopper corresponding to the area to perform normal discharging, otherwise, correspondingly reducing the discharging speed of the discharging equipment (or the plate type ore feeder) or closing the discharging equipment (or the plate type ore feeder), cooling the sintering ore in the area for a period of time, and performing normal discharging after the temperature of the sintering ore reaches the cooling effect. Meanwhile, the discharging speed can be adjusted by adjusting the depth of the adjusting rod inserted into the material layer.

In the invention, the divided-grid vertical cooler mainly comprises a storage bin, a straight pipe, a material height adjusting device, a tower body, a dividing grid, an air inlet device, a discharge cone hopper, a discharge device (or a plate type ore feeder) and a hot air outlet. The method comprises the steps that a uniform feeding system is formed by a feed bin, a straight pipe and a material height adjusting device, hot sinter enters the straight pipe under the action of gravity after entering the feed bin, flows out of the straight pipe, is filled around a lower port of the material height adjusting device, and is naturally stacked in a plurality of independent spaces divided below the inner part of the tower body by a grid; the cooling air is uniformly blown into the air supply pipeline through a fan of the air inlet device, is uniformly blown into the hood at the bottom of each independent space through the air supply pipeline, and is uniformly blown into the sintered ores piled up on the tower body through the hood to cool the sintered ores; the cooled sinter flows into the discharge cone hoppers under the action of gravity, and one discharge cone hopper is arranged below each independent space, so that the sinter passing through the discharge cone hoppers can flow downwards uniformly; the lower part of each discharge cone hopper is connected with a discharge device (or a plate type ore feeder), and the discharge speed of each discharge cone hopper can be controlled through the discharge device (or the plate type ore feeder). After heat exchange with the hot sinter, the cooling air entering the tower cools the hot sinter to below 150 ℃, and the hot sinter is heated to a higher temperature to become hot air, and the hot air passes through the material surface at the top end of the material layer, enters a material-free area at the upper end of the tower after passing through the material layer, is discharged through a hot air outlet, and enters a subsequent waste heat power generation system.

Preferably, a plurality of temperature measuring probes are uniformly arranged at the lower part of the tower wall along the circumferential direction, and the temperature measuring probes can be thermocouple temperature sensors. When the detected sinter temperature at a certain position in the circumferential direction reaches the cooling effect, normally starting a discharging device or a discharging outlet below a discharging cone hopper corresponding to the area to perform normal discharging, otherwise, correspondingly reducing the discharging speed of the discharging device or closing the discharging device to cool the sinter in the area for a period of time, and when the sinter temperature reaches the cooling effect, performing normal discharging.

Preferably, the discharge cone may function as a seal. Preferably, the upper ends of the discharge cone hoppers are mutually connected together and then are separated downwards into a plurality of structures.

The hot sinter crushed by the single-roller crusher is transported to the top of the vertical cooler by the hot sinter conveying device, enters into a bin of the vertical cooler, continuously flows from top to bottom under the action of gravity, enters into a grid at the lower part of the cooler, performs countercurrent heat exchange with cooling air from bottom to top in the cooler, cools the sinter to below 150 ℃, passes through a discharge cone hopper at the lower part of the vertical cooler, is discharged onto a cold sinter conveyor by a discharge device, and transports the cooled sinter to the next process by the cold sinter conveyor.

Under the action of the circulating fan, cooling gas is supplied into the machine body from the air supply device of the cooler through the air outlet cap at a certain pressure, passes through the sinter material layer from bottom to top, and performs countercurrent heat exchange with the sinter. The temperature of the cooling gas is gradually increased after heat exchange, and the cooling gas is discharged from the sinter level in the vertical cooler tower to form high-temperature hot air. The high-temperature hot air is discharged through a hot air outlet at the upper part of the vertical cooler. The discharged high-temperature hot air enters a subsequent waste heat power generation system.

Preferably, the apparatus also has a self-feedback discharge adjustment function. And detecting the temperature of the sintering ore in the corresponding area through the temperature measuring probe, when the detected temperature of the sintering ore in a certain circumferential position reaches the cooling effect, normally starting the discharging equipment below the discharging cone hopper corresponding to the area to perform normal discharging, otherwise, correspondingly reducing the discharging speed of the discharging equipment or closing the discharging equipment to cool the sintering ore in the area for a period of time, and after the temperature of the sintering ore reaches the cooling effect, performing normal discharging. Meanwhile, the discharging speed can be adjusted by adjusting the insertion depth of the adjusting rod.

The cooling hood mainly comprises a hood top cover, a plurality of taper cover plates from small to large, a supporting frame and a hood air pipe. Wherein, the top cover of the hood is of a conical structure and mainly protects the conical cover plate positioned below the hood; the conical cover plates are divided into a plurality of small-to-large conical structures, the cone angles of the conical cover plates are smaller than the cone angle of the top cover, an airflow channel is formed between the adjacent conical cover plates, cooling gas can flow out of the airflow channel, and sinter in the three-dimensional cooler is cooled; the support frame is mainly used for supporting the wear-resistant top cover and the conical cover plate, and the hood top cover and the conical cover plate are fixed on the support frame; the hood air pipe is positioned at the lower end of the support frame, one end of the hood air pipe is connected with the inlet cooling air, the other end of the hood air pipe is connected with the support frame, the cooling air passing through the hood air pipe can directly enter the hood, and the air is supplied outwards through the air flow channel between the conical cover plates.

In the invention, the support frame is a conical frame, and the support frame can be ventilated, that is, the upper surface (conical surface) of the support frame is provided with holes, and cooling wind can freely pass through the support frame. The support frame is used for supporting the hood top cover, the conical cover plate and for connecting the hood air pipe.

In the invention, the hood top cover is of a conical structure, is arranged at the topmost end of the supporting frame and is positioned above the topmost conical cover plate, and is used for protecting the cooling hood from being damaged due to falling of sintered mineral aggregate.

In the invention, the conical cover plate is a middle section (circle) of the conical structure, the upper part and the lower part (top and bottom) of the conical cover plate are both open, the side wall is inclined, and cooling wind can freely pass through the upper part from the lower part of the conical cover plate. According to the conical cover plate, the diameters of the bottoms of the conical cover plates are sequentially increased from top to bottom, and a plurality of conical cover plates are cumulatively arranged together to form the cooling hood device with the integrally conical structure. The top of the uppermost conical cover plate is covered by a hood top cover.

In the invention, the air flow channel is formed between the adjacent conical cover plates, and the adjacent conical cover plates can be provided with cushion blocks (steel welding) and the like, so that the air flow channel is formed between the adjacent conical cover plates, and cooling air can smoothly enter the cooler from the air flow channel. The bottom of the last conical cover plate and the top of the next conical cover plate are mutually intersected (overlapped part exists), so that sinter is prevented from entering the cooling hood from the airflow channel.

In the present invention, the height of the cooling hood is not limited, depending on the size of the cooler and the reagent condition of the sintered ore. Generally, the height of the cooling hood is 30-500cm, preferably 50-300cm, more preferably 80-200cm.

In the invention, the number of the conical cover plates is set according to the actual process requirement, and the higher the cooling hood is, the more the number of the conical cover plates is; the lower the height of the cooling hood, the fewer the number of conical cover plates.

In the present invention, the gap of the air flow passage is not limited as long as the cooling air can be ensured to smoothly enter the cooler. The larger the air volume required by a typical chiller, the larger the gap of the air flow passage.

In the present invention, the taper angle of the top cover and the taper angle of the tapered cover plate are not limited. In the actual use process, if the cone angle of the hood top cover and the cone angle of the cone cover plate are too small, the cone angle of the cooling air outlet is reduced, and the air quantity is also reduced; if the cone angle of the hood top cover and the cone angle of the cone cover plate are too large, the agglomerate may stay on the cone surface of the cooling hood, which will affect the cooling air entering the cooler and will also affect the normal flow of agglomerate. Generally, the cone angle of the hood top cover and the cone angle of the cone cover plate are 20-150 degrees, preferably 30-120 degrees, and more preferably 40-90 degrees. The cone angle of the hood top cover is larger than that of the cone cover plate so as to better protect the cone cover plate.

The vibrating conveyor mainly comprises a vibrator, a machine body support, an upper layer vibrating groove and a lower layer vibrating groove. The vibrator is connected to the vibration groove, so that the vibration groove can vibrate, the vibration groove is connected to the machine body support through the spring, and the machine body support is fixed. The lower vibration groove is positioned below, and materials can be conveyed in a vibrating manner from the lower vibration groove. The upper vibration groove is positioned above the lower vibration groove, the material inlet of the upper vibration groove is separated from the material inlet of the lower vibration groove by a certain distance, the material inlets of the two vibration grooves are convenient to be separately arranged, and the material can be conveyed in a vibrating manner from the upper vibration groove.

Wherein, in order to realize that the double-layer vibrating conveyor works at two motionless conveying speeds, the double-vibrator scheme and the single-vibrator scheme with different dip angles are divided. The double vibrator scheme is that the upper layer vibrating tank is connected with an upper layer vibrator, the lower layer vibrating tank is connected with a lower layer vibrator, the upper layer vibrator and the lower layer vibrator can work at different vibration frequencies (or amplitudes), and therefore the upper layer vibrating tank and the lower layer vibrating tank can work at different conveying speeds. The different inclination schemes of single vibrator are that a vibrator is connected on two vibration grooves, upper vibration groove and lower vibration groove fixed connection, but upper vibration groove and lower vibration groove bottom plate inclination are different, under the same vibration frequency, because the bottom plate inclination is not used, then can realize upper vibration groove and lower vibration groove work with different conveying speed.

Preferably, in the different inclination schemes of the single vibrator, an adjusting device can be arranged on the upper-layer vibrating tank, and the inclination of the bottom plate of the upper-layer vibrating tank can be adjusted through the adjusting device, so that different conveying amounts can be adapted.

The upper layer vibration groove is positioned right above the lower layer vibration groove. The upper vibration groove is located the lower floor vibration groove and is the groove structure, generally, there is the bottom plate that is located the bottom and be located the curb plate of bottom plate top both sides to constitute, the length of upper vibration groove is less than the length of lower floor vibration groove (generally refers to the length of bottom plate), the length of upper vibration groove and the length of lower floor vibration groove are decided according to the diameter of vertical cooler discharge cone fill exit, assume that vertical cooler discharge cone fill exit diameter is d, then the length of upper vibration groove is shorter than the length of lower floor vibration groove d/2, upper vibration groove and lower floor vibration groove's discharge gate department are the parallel and level, lower floor vibration groove's edge is located the edge below of discharge cone fill outside, upper vibration groove's edge is located the below of discharge cone fill central line, just realized that discharge cone fill discharge half is through upper vibration groove discharge, the other half is through lower floor vibration groove discharge.

In the application, the adjusting device adjusts the inclination angle of the bottom plate of the upper layer vibrating trough or the lower layer vibrating trough, and the inclination angle of the bottom plate refers to an included angle formed by the bottom plate and the horizontal plane. The larger the inclination angle is, the faster the blanking speed is, the smaller the inclination angle is, and the slower the blanking speed is. The inclination angle of the bottom plate of the upper layer vibrating trough and the inclination angle of the bottom plate of the lower layer vibrating trough can be the same or different.

In the present application, the vibration frequency and amplitude of the upper layer vibrator and the lower layer vibrator may be the same or different. The upper layer vibrator and the lower layer vibrator are driven by independent motors, respectively.

The high temperature pellet shaped agglomerate surfaces are sticky and once cooled adhere to each other, prior art equipment often causes difficult discharge, but the present application's divided-cell vertical cooler solves this problem well.

Typically, the height of the tower is typically 5-18 meters, preferably 6-15 meters, more preferably 7-12 meters. The length of the tower is generally 8-30 meters, preferably 9-27 meters, preferably 10-25 meters, preferably 11-22 meters, more preferably 12-20 meters. The width of the tower is generally 8-30 meters, preferably 9-27 meters, preferably 10-25 meters, preferably 11-22 meters, more preferably 12-20 meters.

In the present application, the diameter of the hood is generally 1.5 to 4 meters, preferably 1.8 to 3.5 meters, more preferably 2 to 3 meters, still more preferably 2.2 to 2.8 meters, for example 2.5 meters.

Compared with the prior art, the divided-grid vertical cooler has the following beneficial technical effects:

1. the sintered ore in a single large tower is divided into areas by adopting a cellular mode, and the size of each area is far smaller than the size of the total tower body, so that uniform air supply and uniform blanking are facilitated; the method adopts 9 lattices, but is not limited to 9 lattices, and also comprises 4 lattices, 12 lattices, 16 lattices and the like;

2. the air caps of the cells are connected in series with one air blower to supply air together by adopting the cell type, and the air caps of the cells can be used for supplying air by using one air blower independently;

3. the grid-division vertical sintering cooler is a square cooler, has a simple structure, reduces equipment investment, and reduces the operation cost of equipment;

4. the adoption of the cellular vertical sintering cooler is beneficial to uniform air inlet, the integral downflow of the sintered material, no blockage phenomenon of discharging, and obvious reduction of the frequency of shutdown and maintenance;

5. the function of recovering radiant heat of sintering ores: the temperature of the hot sinter just entering the tower body is high, and heat energy is radiated into the tower body through the surface of the material layer. The radiant heat recoverer is arranged in the tower body below the top cover, and the radiant heat recoverer above the material layer can recover radiant heat energy, convert the radiant heat energy into high-temperature steam and enter the waste heat power generation system through a heat recovery pipeline.

Drawings

FIG. 1 is a schematic diagram of a cellular vertical cooler according to the present invention;

FIG. 2 is a schematic view of another design of the cellular vertical cooler of the present invention;

FIG. 3 is a schematic view of a third design of the cellular vertical cooler of the present invention;

FIG. 4 is a cross-sectional view of the position A-A of FIG. 1;

FIG. 5 is a cross-sectional view of the alternative design A-A of FIG. 1;

FIG. 6 is a schematic view of the structure of the hood according to the present invention;

FIG. 7 is a schematic view of a dual-layer vibratory feeder of the present invention having two vibrators;

FIG. 8 is a schematic view of a dual-layer vibratory feeder of the present invention having a vibrator;

FIG. 9 is a partial schematic view of the operational state of the partitioned vertical cooler of the present invention;

FIG. 10 is a front view of the feed position of the present invention;

FIG. 11 is a front view of a feed position of the present invention;

FIG. 12 is a top view of the feed location of the present invention;

FIG. 13 is a front view III of the feed location of the present invention;

FIG. 14 is a front view of another design of the feed location of the present invention;

FIG. 15 is a front view of a third design of a feed location of the present invention;

FIG. 16 is a schematic view of a third design of a lifting device for feeding locations according to the present invention;

fig. 17 is a schematic view of a first radiant heat recoverer in the form of a fan-shaped hollow plate;

FIG. 18 is a schematic view of a second radiant heat recoverer in the form of a tube array;

FIG. 19 is a schematic diagram of a control system for a partitioned vertical chiller according to the present invention.

Reference numerals: a1: a divided-grid vertical cooler; 1: a storage bin; 101: a straight pipe; 2: a tower body; 3: dividing grids; 4: an air inlet device; 401: an air supply pipeline; 402: a blower; 5: a discharge cone hopper; 6: a temperature measurement probe; 7: an adjusting rod; 8: a plate feeder; 9: a hot air outlet; 10: a heat preservation layer; m: a hood; m01: a support frame; m02: a hood top cover; m03: a conical cover plate; m04: a hood air pipe; m05: an air flow channel; p: a discharging device; p01: a body support; p02: an upper layer vibration tank; p03: a lower layer vibration tank; p04: a vibrator; p0401: an upper vibrator; p0402: a lower vibrator; p05: an adjusting device; k: a control system; f01: a first radiant heat recoverer; f01a: a second radiant heat recoverer; f0101: a water inlet of the radiant heat recoverer; f0102: a steam outlet of the radiant heat recoverer; f02: a first heat recovery pipe (steam pipe); f02a: a second heat recovery pipe (steam pipe); w: a material height adjusting device; w01: a support; w02: a gear bracket; w03: driven wheel; w04: a chain; w05: a transmission gear; w06: a manual rocker; w07: a motor; w08: a steel pipe; w09: a calabash bracket; w10: calabash; w11: a lifting device; w12: a connecting rod; w13: a transmission case: w14: a lifting motor; w15: a counter; w16: a backstop.

Detailed Description

The utility model provides a vertical sinter cooler of division, this vertical cooler A1 of division includes feed bin 1, tower body 2, division frame 3, hot air inlet unit 4, row's material awl fill 5 and hot air outlet 9. Wherein: the stock bin 1 is arranged right above the tower body 2. The division frame 3 is disposed in the tower body 2 and is located at a lower portion of the tower body 2. The air inlet device 4 is arranged at the bottom of the tower body 2. The discharge cone hopper 5 is arranged below the tower body 2. The dividing frame 3 divides the inner portion Fang Fenge of the tower body 2 into a plurality of independent spaces. The hot air outlet 9 is provided at the upper part or top of the tower body 2.

Preferably, the divided-grid vertical cooler A1 further includes a material height adjusting device W. The end of the silo 1 is provided with a straight pipe 101. The material height adjusting device W is sleeved on the straight pipe 101.

Preferably, a first radiant heat recoverer F01 is provided within the tower 2 and proximate to the top cover of the tower 2. Preferably, a second radiant heat recoverer F01a is provided at the front end of the hot air outlet 9.

Preferably, the first radiant heat recoverer F01 positioned at the top of the tower body adopts a hollow slab with a fan-shaped surface. Preferably, the second radiant heat recoverer F01a adopts a plate fin type heat exchanger or a tube type heat exchanger.

Preferably, a discharging device P or a plate feeder 8 is arranged below the discharging cone hopper 5.

In the present invention, the air intake device 4 includes a hood M, an air supply duct 401, and a fan 402. Wherein the hood M is disposed in the tower 2. The blower 402 is disposed outside the tower 2. The air supply duct 401 connects the hood M and the blower 402.

Preferably, the tower body 2 is square. The dividing frame 3 divides the lower portion Fang Fenge of the inner portion of the tower body 2 into 2 to 24 independent spaces, preferably 4 to 20, more preferably 6 to 16, and even more preferably 8 to 12.

Preferably, a hood M is provided at the bottom of each independent space. The plurality of hoods M are connected in series through the air supply duct 401 and then connected to one fan 402. Or each hood M is connected to a fan 402 via an air supply duct 401.

Preferably, a discharge cone 5 is arranged below each independent space.

Preferably, the inner side of the lower part of the tower body 2 and the inner side of the discharge cone hopper 5 are provided with heat insulation layers 10.

In the invention, the hood M comprises a support frame M01, a hood top cover M02, a plurality of conical cover plates M03 and a hood air pipe M04. Wherein: the plurality of conical cover plates M03 are sequentially arranged on the support frame M01. The bottom diameter of the tapered cover plate M03 increases in order from top to bottom. The hood top cover M02 is arranged above the topmost conical cover plate M03, and the hood air pipe M04 is arranged below the support frame M01 and connected with the support frame M01.

Preferably, an air flow channel M05 is formed between the adjacent conical cover plates M03.

Preferably, the number of air flow channels M05 is from 2 to 200, preferably from 5 to 100, more preferably from 8 to 50.

More preferably, the hood top cover M02 has a tapered structure.

In the invention, the included angle of the hood top cover M02 is larger than the included angle of the conical cover plate M03.

In the present invention, the number of the tapered cover plates M03 is 4 to 80, preferably 6 to 70, preferably 8 to 50, more preferably 12 to 40, for example 18, 20 or 25.

In the present invention, the clearance of the air flow path M05 is 3 to 100mm, preferably 5 to 80mm, more preferably 7 to 50mm, for example 15, 20, 25, 30mm.

In the present invention, the taper angle of the hood top cover M02 is 20 to 150 degrees, preferably 30 to 120 degrees, more preferably 40 to 90 degrees.

In the present invention, the taper angle of the tapered cover plate M03 is 20 to 150 degrees, preferably 30 to 120 degrees, more preferably 40 to 90 degrees.

Preferably, the hood top cover M02 is a wear-resistant top cover made of wear-resistant steel; the conical cover plate M03 is a wear-resistant conical cover plate made of wear-resistant steel.

Preferably, the lower part of the discharge cone 5 is provided with an adjusting rod 7.

Preferably, the tops of adjacent discharge cone hoppers 5 are connected to each other, and the lower portions of adjacent discharge cone hoppers 5 are separated.

Preferably, the upper part of the discharge cone hopper 5 is provided with a temperature measuring probe 6.

In the present invention, the discharging device P is a double-deck vibratory feeder. The double-layer vibration feeder comprises a machine body support P01, an upper layer vibration groove P02, a lower layer vibration groove P03 and a vibrator P04. The upper layer vibration groove P02 and the lower layer vibration groove P03 are provided on the body bracket P01. The upper layer vibration groove P02 is located above the lower layer vibration groove P03. The upper vibration groove P02 and the lower vibration groove P03 are connected to the vibrator P04, respectively.

Preferably, the upper vibration tank P02 and/or the lower vibration tank P03 are provided with an adjusting device P05. The adjusting device P05 adjusts the inclination angle of the bottom plate of the lower vibration tank P03.

Preferably, the vibrator P04 includes an upper vibrator P0401 and a lower vibrator P0402. The upper vibrator P0401 is connected to the upper vibration groove P02. The lower vibrator P0402 is connected to the lower vibration groove P03.

Preferably, the upper vibration groove P02 and the lower vibration groove P03 are provided on the body bracket P01 by springs.

Preferably, the divided-cell vertical cooler A1 further comprises a control system K. The control system K is connected with the material height adjusting device W, the first radiant heat recoverer F01, the second radiant heat recoverer F01a, the air inlet device 4, the discharge cone hopper 5, the temperature measuring probe 6, the adjusting rod 7, the discharge equipment P and the plate type ore feeder 8, and controls the operation of the material height adjusting device W, the first radiant heat recoverer F01, the second radiant heat recoverer F01a, the air inlet device 4, the discharge cone hopper 5, the temperature measuring probe 6, the adjusting rod 7, the discharge equipment P and the plate type ore feeder 8.

In the present invention, the length of the straight pipe 101 is 0.5 to 3 m, preferably 0.5 to 2.5 m, more preferably 1 to 2 m.

In the present invention, the divided-cell vertical cooler A1 further includes: support W01, gear support W02, follow driving wheel W03, chain W04. Wherein: the outer side of the material height adjusting device W is provided with a support W01. A gear bracket W02 is arranged on the top cover of the tower body 2. The gear bracket W02 is provided with a driven wheel W03. One end of the chain W04 is connected with the support W01, and the other end of the chain W04 penetrates through the top cover of the tower body 2 to be connected with the driven wheel W03.

Preferably, the gear bracket W02 is further provided with a transmission gear W05, and the transmission gear W05 is in fit connection with the driven wheel W03.

In the present invention, the transmission gear W05 is a transmission gear reducer.

Preferably, the transmission gear W05 is connected to the manual rocker W06 or the motor W07, and the manual rocker W06 or the motor W07 drives the transmission gear W05.

More preferably, the transmission gear W05 is provided with a backstop W16.

In the present invention, the divided-cell vertical cooler A1 further includes: steel pipe W08. One end of the steel pipe W08 is connected with the support W01, and the other end of the steel pipe W08 penetrates through the top cover of the tower body 2 to be connected with the chain W04. The other end of the chain W04 is connected to the driven pulley W03.

Preferably, the steel pipe W08 extends out of the top cover of the tower 2. The length of the steel pipe W08 extending out of the top cover of the tower body 2 is 0.1-1 m, preferably 0.2-0.7 m, more preferably 0.3-0.5 m.

In the present invention, the number of the holders W01 is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A gear bracket W02 is provided directly above each of the holders W01. Each gear bracket W02 is provided with a driven wheel W03. One end of each chain W04 is connected with a support W01, and the other end of the chain W04 is connected with a driven wheel W03.

In the present invention, one end of each steel pipe W08 is connected to a support W01. The other end of the steel pipe W08 is connected to a chain W04, and the other end of the chain W04 is connected to a driven wheel W03.

Preferably, the plurality of holders W01 are symmetrically disposed outside the material height adjusting device W.

In the present invention, the divided-cell vertical cooler A1 further includes: support W01, chain W04, calabash support W09, calabash W10. Wherein: the outer side of the material height adjusting device W is provided with a support W01. A calabash bracket W09 is arranged on the top cover of the tower body 2. The hoist W10 is arranged on the hoist bracket W09. One end of the chain W04 is connected with the support W01, and the other end of the chain W04 penetrates through the top cover of the tower body 2 to be connected with the lifting hook of the hoist W10.

Preferably, the divided-cell vertical cooler A1 further includes: steel pipe W08. The chain W04 is replaced with a steel pipe W08. One end of the steel pipe W08 is connected with the support W01, and the other end of the steel pipe W08 passes through the top cover of the tower body 2 and is connected with the lifting hook of the hoist W10.

Preferably, the hoist W10 is a manual hoist or an electric hoist.

Preferably, the steel pipe W08 extends out of the top cover of the tower 2. The length of the steel pipe W08 extending out of the top cover of the tower body 2 is 0.1-1.5 m, preferably 0.2-1.2 m, more preferably 0.3-1 m.

In the present invention, the number of the holders W01 is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A gourd bracket W09 is arranged right above each support W01. Each calabash bracket W09 is provided with a calabash W10. One end of each chain W04 is connected with a support W01, and the other end of each chain W04 is connected with a hoist W10.

In the invention, one end of each steel pipe W08 is connected with a support W01, and the other end of the steel pipe W08 is connected with a hoist W10.

In the present invention, the divided-cell vertical cooler A1 further includes: a support W01, a steel pipe W08 and a lifting device W11. Wherein: the outer side of the material height adjusting device W is provided with a support W01. The top cover of the tower body 2 is provided with a lifting device W11, one end of a steel pipe W08 is connected with a support W01, and the other end of the steel pipe W08 penetrates through the top cover of the tower body 2 to be connected with the lifting device W11.

In the present invention, the number of the holders W01 is 2 to 10, preferably 3 to 8, more preferably 4 to 6. A lifting device W11 is arranged right above each support W01. One end of each steel pipe W08 is connected with a support W01, and the other end of the steel pipe W08 is connected with a lifting device W11.

In the present invention, a plurality of lifting devices W11 are connected to a lifting motor W14 through a connecting rod W12 and a transmission case W13.

Preferably, a counter W15 is also included. The counter W15 is connected to the lift motor W14.

More preferably, the lifting device W11 is a screw lifter.

In the present invention, the first radiant heat recoverer F01 mounted on the top of the inner space of the tower 2 (i.e., below the top cover of the tower 2) is not particularly limited, and for example, a hollow slab having a fan-shaped surface is used, and the annular radiant heat recoverer F01 is formed by assembling the hollow slab on the top of the inner space of the tower 2.

The first radiant heat recoverer F01 is connected with a first heat recovery pipe F02, which stores high-temperature steam and further conveys the high-temperature steam to a waste heat power generation system. The second radiant heat recoverer F01a is connected with a second heat recovery pipe F02a, which stores high-temperature steam for further delivery to a cogeneration system.

In the present invention, the first radiant heat recoverer F01 and the second radiant heat recoverer F01a each include a water inlet F0101 of the radiant heat recoverer and a steam outlet F0102 of the radiant heat recoverer.

(1) The sinter enters a feed bin 1 of a division vertical cooler A1 and continuously flows from top to bottom under the action of gravity; under the condition of free accumulation of materials, filling the materials around the lower port of the material height adjusting device W, and moving the material height adjusting device W up and down to realize the change of the material height;

(2) The air inlet device 4 of the division vertical cooler A1 conveys cooling gas (such as air) into the tower body 2 through the blast cap M, the cooling gas passes through the sinter material layers stacked in each independent space in the division vertical cooler A1 from bottom to top, and carries out countercurrent heat exchange with the sinter, the temperature of the cooling gas is gradually increased after the heat exchange, the cooling gas is discharged through the sinter material surface in the division vertical cooler A1 tower to form high-temperature hot air, and the high-temperature hot air is discharged through the hot air outlet 9; preferably, the high temperature hot wind is delivered to a waste heat utilization system;

(3) The sintered ore piled up in the tower body 2 of the division vertical cooler A1 is cooled by countercurrent heat exchange with cooling gas from bottom to top, enters a discharge cone hopper 5 at the lower part of the division vertical cooler A1, and is discharged by a discharge device P or a plate type ore feeder 8;

(4) The first radiant heat recoverer F01 recovers radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system.

Preferably, the second radiant heat recoverer F01a recovers radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system.

Preferably, the control system K controls the operation of the material height adjusting device W, the first radiant heat recoverer F01, the second radiant heat recoverer F01a, the air inlet device 4, the discharge cone 5, the adjusting rod 7, the discharge device P, and the plate feeder 8 according to the temperature detected by the temperature measuring probe 6.

Preferably, a temperature measuring probe 6 is arranged corresponding to each discharge cone 5, and the control system K controls the operation of the corresponding discharge equipment P or the plate feeder 8 according to the temperature detected by each temperature measuring probe 6.

The division vertical cooler A1 also has a self-feedback discharging adjusting function. The temperature probe 6 detects the temperature of the sintering ore in the corresponding area, after the detected temperature of the sintering ore in a certain circumferential position reaches the cooling effect, the discharging equipment P (or the plate type ore feeder 8) below the discharging cone hopper 5 corresponding to the area is normally started to perform normal discharging, otherwise, the discharging speed of the discharging equipment P (or the plate type ore feeder 8) is correspondingly reduced or the discharging equipment P (or the plate type ore feeder 8) is closed, the sintering ore in the area is cooled for a period of time again, and after the temperature of the sintering ore reaches the cooling effect, the normal discharging is performed. At the same time, the discharging speed can be adjusted by adjusting the depth of the adjusting rod 7 inserted into the material layer.

Example 1

The height of the tower body 2 is 9 meters, and the length and the width of the tower body 2 are 14 meters. The height of the discharge cone hopper 5 is 7 meters. The discharging device P is a double-layer vibration feeder. Above the inside of the tower body 2, an annular first radiant heat recoverer F01 is formed by assembling a plurality of annular hollow plates.

The diameter of the hood M is 2.5 meters.

The daily handling capacity of the sinter was 8600 tons/day. The temperature of the sinter before entering the storage bin 1 is about 700 ℃, and the temperature of the hot air at the hot air outlet 9 reaches about 500 ℃. The recovered heat was used for power generation, and the generated power was about 36 degrees.

Compared with the ring cooler in the prior art, the ring cooler has the advantages that: the technology of the invention can provide hot air with higher temperature for generating high-temperature steam, and remarkably improves the power generation efficiency because of better tightness.

The process can also overcome the problem of secondary sintering of the sinter in the vertical cooling device and prevent the blockage phenomenon of the vertical cooling device. The device runs for 6 months, and the problem of blockage is avoided.

Example 2

Example 1 was repeated except that a second radiant heat recoverer F01a was further provided at the front end of the hot air outlet 9; a tube array heat exchanger is used as shown in fig. 18.

Example 3

Example 2 was repeated except that the discharge was performed using a plate feeder 8, as shown in fig. 3.

Claims

1. The utility model provides a vertical sinter cooler of division, this vertical cooler of division (A1) includes feed bin (1), tower body (2), division frame (3), hot-blast device (4), row's material awl fill (5) and hot-blast export (9), wherein: the feed bin (1) is arranged right above the tower body (2), the grid dividing frame (3) is arranged in the tower body (2) and is positioned at the lower part of the tower body (2), the air inlet device (4) is arranged at the bottom of the tower body (2), and the discharging cone hopper (5) is arranged below the tower body (2); the grid dividing frame (3) divides the lower part of the inner part of the tower body (2) into a plurality of independent spaces; the hot air outlet (9) is arranged at the upper part or the top of the tower body (2);

the air inlet device (4) comprises a hood (M); the bottom of each independent space is provided with a hood (M); a discharge cone hopper (5) is arranged below each independent space; the tops of the adjacent discharge cone hoppers (5) are connected with each other, and the lower parts of the adjacent discharge cone hoppers (5) are separated.

2. The divided-cell vertical sinter cooler of claim 1, wherein: the grid vertical cooler (A1) further comprises a material height adjusting device (W), a straight pipe (101) is arranged at the tail end of the storage bin (1), and the material height adjusting device (W) is sleeved on the straight pipe (101); and/or

A first radiant heat recoverer (F01) is arranged in the tower body (2) and close to the top cover of the tower body (2); and/or

A discharging device (P) or a plate type ore feeder (8) is arranged below the discharging cone hopper (5).

3. The divided-cell vertical sinter cooler as claimed in claim 2, wherein: a second radiant heat recoverer (F01 a) is arranged at the front end of the hot air outlet (9).

4. A divided-cell vertical sinter cooler as claimed in any one of claims 1 to 3, wherein: the air inlet device (4) comprises a hood (M), an air supply pipeline (401) and a fan (402), wherein the hood (M) is arranged in the tower body (2), the fan (402) is arranged outside the tower body (2), and the air supply pipeline (401) is connected with the hood (M) and the fan (402); and/or

The tower body (2) is square, and the grid frame (3) divides the lower part inside the tower body (2) into 2-24 independent spaces.

5. The divided-cell vertical sinter cooler of claim 4, wherein: the grid (3) divides the lower part of the inner part of the tower body (2) into 4-20 independent spaces.

6. The divided-cell vertical sinter cooler of claim 5, wherein: the grid (3) divides the lower part of the inner part of the tower body (2) into 6-16 independent spaces.

7. The divided-cell vertical sinter cooler of claim 6, wherein: the grid (3) divides the lower part of the inner part of the tower body (2) into 8-12 independent spaces.

8. The divided-cell vertical sinter cooler of claim 4, wherein: the bottom of each independent space is provided with a hood (M); the plurality of wind caps (M) are connected with a fan (402) after being connected in series through the air supply pipeline (401); or each hood (M) is connected with a fan (402) through an air supply pipeline (401); and/or

An insulating layer (10) is arranged on the inner side of the lower part of the tower body (2) and the inner side of the discharge cone hopper (5).

9. The divided-cell vertical sinter cooler of claim 8, wherein: the hood (M) comprises a supporting frame (M01), a hood top cover (M02), a plurality of conical cover plates (M03) and a hood air pipe (M04), wherein: the plurality of conical cover plates (M03) are sequentially arranged on the supporting frame (M01), and the diameters of the bottoms of the conical cover plates (M03) are sequentially increased from top to bottom; the hood top cover (M02) is arranged above the topmost conical cover plate (M03), and the hood air pipe (M04) is arranged below the supporting frame (M01) and connected with the supporting frame (M01).

10. The divided-cell vertical sinter cooler of claim 9, wherein: an air flow channel (M05) is formed between the adjacent conical cover plates (M03).

11. The divided-cell vertical sinter cooler of claim 10, wherein: the number of the air flow channels (M05) is 2-200.

12. The divided-cell vertical sinter cooler of claim 11, wherein: the number of the air flow channels (M05) is 5-100.

13. The divided-cell vertical sinter cooler of claim 12, wherein: the number of air flow channels (M05) is 8-50.

14. The divided-cell vertical sinter cooler as claimed in any one of claims 10 to 13, wherein: the hood top cover (M02) is of a conical structure.

15. The divided-cell vertical sinter cooler of claim 14, wherein: the included angle of the hood top cover (M02) is larger than the cone angle of the cone-shaped cover plate (M03); and/or

The gap of the air flow channel (M05) is 3-100mm.

16. The divided-cell vertical sinter cooler of claim 15, wherein: the gap of the air flow channel (M05) is 5-80mm.

17. The divided-cell vertical sinter cooler as claimed in any one of claims 1 to 3, 5 to 13, 15 to 16, wherein: an adjusting rod (7) is arranged at the lower part of the discharging cone hopper (5); and/or

The upper part of the discharge cone hopper (5) is provided with a temperature measuring probe (6).

18. The divided-cell vertical sinter cooler as claimed in claim 2, wherein: the discharging device (P) is a double-layer vibration feeder; the double-layer vibration feeder comprises a machine body bracket (P01), an upper layer vibration groove (P02), a lower layer vibration groove (P03) and a vibrator (P04); the upper layer vibration groove (P02) and the lower layer vibration groove (P03) are arranged on the machine body support (P01), the upper layer vibration groove (P02) is located above the lower layer vibration groove (P03), and the upper layer vibration groove (P02) and the lower layer vibration groove (P03) are respectively connected with the vibrator (P04).

19. The divided-cell vertical sinter cooler of claim 18, wherein: an adjusting device (P05) is arranged on the upper layer vibrating groove (P02) and/or the lower layer vibrating groove (P03), and the adjusting device (P05) adjusts the inclination angle of the bottom plate of the lower layer vibrating groove (P03).

20. The divided-cell vertical sinter cooler of claim 19, wherein: the vibrator (P04) comprises an upper vibrator (P0401) and a lower vibrator (P0402), the upper vibrator (P0401) is connected with the upper vibration groove (P02), and the lower vibrator (P0402) is connected with the lower vibration groove (P03).

21. The divided-cell vertical sinter cooler of claim 20, wherein: the upper layer vibration groove (P02) and the lower layer vibration groove (P03) are arranged on the machine body bracket (P01) through springs.

22. The divided-cell vertical sinter cooler as claimed in any one of claims 1 to 3, 5 to 13, 15 to 16, 18 to 21, wherein: the grid vertical cooler (A1) further comprises a control system (K), wherein the control system (K) is connected with a material height adjusting device (W), a first radiant heat recoverer (F01), a second radiant heat recoverer (F01 a), an air inlet device (4), a discharge cone hopper (5), a temperature measuring probe (6), an adjusting rod (7), discharge equipment (P) and a plate type ore feeder (8) and controls the operation of the material height adjusting device (W), the first radiant heat recoverer (F01), the second radiant heat recoverer (F01 a), the air inlet device (4), the discharge cone hopper (5), the temperature measuring probe (6), the adjusting rod (7), the discharge equipment (P) and the plate type ore feeder (8).

23. A method of cooling sinter using the cellular vertical sinter cooler of any one of claims 1 to 22, the method comprising the steps of:

(1) The sinter enters a feed bin (1) of a division vertical cooler (A1) and continuously flows from top to bottom under the action of gravity; under the condition of free accumulation of materials, filling the materials around a lower port of a material height adjusting device (W), and moving the material height adjusting device (W) up and down to realize the change of the material height;

(2) The air inlet device (4) of the division vertical cooler (A1) conveys cooling gas (such as air) into the tower body (2) through the blast cap (M), the cooling gas passes through the sinter material layers stacked in each independent space in the division vertical cooler (A1) from bottom to top, and carries out countercurrent heat exchange with the sinter, the temperature of the cooling gas is gradually increased after the heat exchange, the cooling gas is discharged from the sinter material surface in the tower of the division vertical cooler (A1) to form high-temperature hot air, and the high-temperature hot air is discharged from the hot air outlet (9);

(3) Sinter deposited in the tower body (2) of the division vertical cooler (A1) is cooled by countercurrent heat exchange with cooling gas from bottom to top, enters a discharge cone hopper (5) at the lower part of the division vertical cooler (A1), and is discharged by a discharge device (P) or a plate type ore feeder (8);

(4) The first radiant heat recoverer (F01) recovers radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system.

24. The method according to claim 23, wherein: in the step (2), the high-temperature hot air is conveyed into a waste heat utilization system.

25. The method according to claim 23, wherein: in the step (4), the second radiant heat recoverer (F01 a) recovers radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system.

26. The method according to any one of claims 23-25, wherein the control system (K) controls the operation of the material level adjustment device (W), the first radiant heat recoverer (F01), the second radiant heat recoverer (F01 a), the air intake device (4), the discharge cone (5), the adjustment bar (7), the discharge apparatus (P), the panel feeder (8) in dependence on the temperature detected by the temperature probe (6).

27. The method according to claim 26, wherein: a temperature measuring probe (6) is arranged corresponding to each discharge cone hopper (5), and a control system (K) controls the operation of corresponding discharge equipment (P) or a plate feeder (8) according to the temperature detected by each temperature measuring probe (6).