CN207247920U - Vertical sinter cooler with revolving top - Google Patents

Abstract

Vertical sinter cooler with revolving top, including：The hot-blast outlet (10) that revolving top (1), umbrella chute (2), vertical chute (3), the tower body being made of tower body head cover (4) and tower body side wall (5), the head cover or side wall upper part of cooling section (6) and tower body are set；Wherein：Umbrella chute (2) includes the overall section (201) on top and the separated section (202) of lower part, the upper end of overall section (201) is connected with revolving top (1), each branch vertical chute (3) connection corresponding with lower section of section (202) is separated, hot-air channel (7) is formed in the gas compartment of the top of cooling section (6), vertical chute (3) between tower body；The lower section of cooling section (6) is equipped with uniform air intake device (8)；Multiple discharge cone buckets (9) are arranged on the lower section of uniform air intake device (8)；Discharge apparatus is equipped with the lower section of discharge cone bucket (9).The utility model simple structure and reliable sealing, waste heat recovery are efficient.

Description

Vertical sinter cooler with rotary distributor

technical field

The utility model relates to a sintered ore cooler with a rotary distributor and a sintered ore cooling method, which belong to the fields of ironmaking and environmental protection.

Background technique

In the modern sintering process, "cooling" is one of the most critical processes. After the sintered ore has been roasted by the sintering machine, it has formed a high-temperature finished ore. How can it be protectively cooled without affecting its quality and yield, so that it can be sent to the finished product ore bin through a belt conveyor, and at the same time The perfect recovery and utilization of the sensible heat energy it carries has always been a problem that technicians in the industry have been constantly studying. Since the 1960s, the cooling process of sinter has been developed rapidly, which is mainly divided into three categories: belt cooling, ring cooling and disk cooling. In the late market competition, the strip cooling technology was eliminated, and the remaining ring cooling and disk cooling technologies each have their own advantages and disadvantages. However, comprehensive comparison shows that the waste heat utilization rate of disk cooling is better than that of ring cooling (all sensible heat of sinter can be recycled), so disk coolers are widely used in foreign markets, and this patent also elaborates on the technology of disk coolers.

The technology of disk coolers has been developed since the 1970s. At the beginning, it was horizontal disk cooling, that is, the cooling air flows from the inner ring to the outer ring of the disk cooler, and passes through the material layer to be cooled to exchange heat with it. The cooling air is directly discharged to the atmosphere. This is neither economical nor environmentally friendly. After years of continuous research and optimization, the latest disk cooler technology is the "ventilated longitudinal disk cooling technology" proposed by Japan's Mitsubishi Hitachi and Zhongsheng Iron and Steel. This technology adopts air extraction, which draws the cooling air from the atmosphere into the bottom of the material to be cooled, then passes through the material layer vertically upwards, and finally blows out from the upper part of the material layer to enter the subsequent process. Compared with the original scheme, this scheme has been greatly optimized and improved. The following will introduce this scheme in detail.

JP2008232519A (Mitsubishi Hitachi and Zhongsheng Iron and Steel, hereinafter referred to as D1) discloses the ventilation type longitudinal plate cooling technology, see Figure 1 in it: hot sintered ore falls from the tail of the sintering machine into the feed chute, and accumulates in the chute to form a certain height of material Column, on the one hand, it can play the role of uniform feeding, on the other hand, it can play the role of material sealing to prevent the air from passing through the feeding port. The mineral material continues to pass through the hood and then enters the cooler box, pushing it into a material column of a certain height. At the same time, affected by the negative pressure of the exhaust fan, the air near the plate cooler will be sucked into the material column through the louver air intake device, and pass through the material column from bottom to top to exchange heat with it. The top surface of the material column passes through the air outlet, is sent to the gravity dust collector and waste heat boiler, and finally is discharged outside after passing through the exhaust fan. After being cooled by air, the sintered material forms an annular accumulation area with a cross-section of a 37-degree accumulation angle triangle at the lower tray of the plate cooler. When it is rotated to the unloading area, the sintered material is scraped off by the scraper device to complete the cooling process. Enter the next process link.

Although Mitsubishi Hitachi and Zhongsheng Steel's "ventilated longitudinal plate cooling technology" has made significant progress compared with conventional technologies, it still has the following five defects:

1) The overall height requirement of the device is too high: since the "ventilated longitudinal plate cooling technology" adopts the draft method, it is necessary to install a material seal at the position of the feed inlet, that is, the material column accumulated in the feed chute in Figure 1 of D1, The height of the material seal is 1.2 to 1.5 times the height of the material column in the cooler box as the standard. In this way, the height of the entire set of plate coolers is virtually increased. During construction and installation, either the elevation of the entire sintering machine needs to be raised, or the civil engineering plane of the plate cooler needs to be dug down. No matter which way you choose, it will cause a high investment cost, which is not cost-effective in terms of economic indicators;

2) The open circulation of the air flow leads to low utilization rate of waste heat and pollutes the environment: Since the air flow of the "extraction type longitudinal plate cooling technology" is an open circuit circulation, the air from the waste heat boiler is directly exhausted and not recycled, resulting in more than 100 Sensible heat of the air at a high temperature is wasted, and the discharged air contains a large amount of small particles of dust, causing a certain degree of particle pollution to the atmosphere;

3) The material at the feed inlet is severely worn: due to the "ventilated longitudinal plate cooling technology" that sets the material seal at the feed chute, there will be a friction distance between the lower part of the material seal and the upper layer of the material surface in the plate cooler box. At this time, the sintered material is easily pulverized and broken when it is rubbed under the double-layer harsh working conditions of high temperature and upper material column extrusion, thereby reducing the yield of the sintering machine;

4) The environmental pollution is serious: due to the negative pressure ventilation technology adopted in the "ventilation type longitudinal plate cooling technology", it does not set a sealing cover device at the lower tray of the box body. In this way, when the sintered ore is scraped off by the scraper device, it is easy to cause a large number of fine particles and dust to splash. And once the exhaust fan breaks down, all the material dust pushed around the plate cooler will enter the atmosphere, causing extremely bad influence on the operating environment next to the machine.

5) The thermal efficiency of the waste heat boiler has not reached the highest level: because the "draft-type longitudinal plate cooling technology" does not accurately classify the air passing through the material layer according to the air temperature, but mixes it all into the waste heat boiler, so when the outlet air temperature of the low-temperature section is too low , it will inevitably lower the temperature of the air entering the waste heat boiler, thereby reducing the thermal efficiency value of the waste heat boiler.

At present, the sinter cooling mainly adopts the traditional belt cooler or ring cooler based on the principle of high wind quick cooling and one-time loading and unloading cooling. No matter which cooling method is used, the cooling machine has problems such as large air leakage rate, high power consumption of the fan, low recovery rate of sensible heat, and low thermal efficiency of the boiler. In other words, in the current environment where the market has increasingly stringent requirements for energy saving and green manufacturing in sintering production, it is difficult for the original equipment structure to realize efficient recovery and utilization of sensible heat of sintering ore.

Therefore, it is the only way for the sinter industry to save energy and protect the environment by breaking through the limitations of traditional ring cooling or belt cooling and developing a process and technical equipment for efficient recovery of sinter sensible heat.

Utility model content

Therefore, through a large amount of research work on the recovery of sensible heat of sinter at home and abroad, a cooling process based on small wind and slow cooling of sinter countercurrent thick material layer is proposed. This process has the advantages of slow sinter cooling speed, small cooling air volume per ton consumption, relatively small waste gas volume, high waste gas temperature, high boiler thermal efficiency, all cooling waste gas can be used by the boiler, and the sensible heat recovery rate of sinter can generally reach about 70%. cooling features. According to the sinter countercurrent thick material layer cooling process, a vertical sinter cooler is designed. The vertical sinter cooler has the characteristics of uniform material distribution, uniform discharge and uniform air distribution, so the cooling effect of the cooler is good. The hot air temperature is high, which meets the requirements of the sinter countercurrent thick layer cooling process.

Compared with the original circular cooler, the utility model vertical sinter cooler has simple structure, reliable sealing, no air leakage, less equipment maintenance, and high waste heat recovery efficiency.

The purpose of this utility model is to provide a vertical sinter cooler for cooling sinter, which is a tower structure, so it can also be called a tower cooler.

According to the utility model, there is provided a vertical sinter cooler with a rotary distributor, which includes: a rotary distributor, an umbrella-shaped chute, a vertical chute, a tower composed of a tower top cover and a tower side wall body, cooling section, and the hot air outlet provided on the top cover or side wall of the tower body; wherein: the umbrella-shaped chute includes an upper integral section and a lower section with multiple branches, and the upper end of the integral section is connected to the rotary distributor. Each branch of the split section is connected with a corresponding vertical chute below, the tower body top cover is set on the top of the tower body side wall, the vertical chute is set on the tower body top cover, and the lower end of the vertical chute extends into the tower body , the upper end of which is connected to the branch end of the split section of the umbrella-shaped chute, the rotary distributor is arranged on the top of the umbrella-shaped chute, and the cooling section is arranged at the lower part of the tower body;

The air space (material-free space) above the cooling section, between the vertical chute and the tower body forms a hot air channel;

There is a uniform air inlet device under the cooling section;

A plurality of discharge cones are disposed below the uniform air intake device; and

A discharge device is arranged below the discharge cone.

Preferably, a radiant heat recoverer is provided in the tower body and at the front end of the hot air outlet. Preferably, the radiant heat recovery unit adopts a plate-fin heat exchanger or a tube-and-tube heat exchanger.

Preferably, the discharge equipment is a vibrating feeder or an apron feeder.

Preferably, a cold sinter conveying device is provided below the end of the vibrating feeder.

Preferably, the discharge equipment is an apron feeder, a discharge chute or a discharge hopper is provided below the discharge port of the apron feeder, and a cold sinter conveying device is provided below the discharge chute or discharge hopper.

Preferably, a slide valve is provided at the end of the discharge cone.

Preferably, the lower part of the cooling section (preferably along the circumferential direction) is provided with a temperature measuring probe; preferably, the temperature measuring probe is a thermocouple temperature sensor.

Preferably, the uniform air inlet device includes an annular or "C" shaped outer ring air inlet pipe, a plurality of air duct branch pipes and an inner ring air inlet duct, wherein: the annular or "C" shaped outer ring air inlet pipe is arranged on the tower body Around the outer side of the side wall, the inner ring air inlet duct is arranged at the bottom of the tower body, and one end of each air duct branch pipe is connected to the outer ring air inlet pipe and the other end is connected to the inner ring air inlet duct. Preferably, the side wall or side of the inner ring air inlet channel is a louver structure.

Preferably, the number of branches of the divided sections of the umbrella chute and the number of corresponding vertical chutes are both 3-12, preferably 4-10, more preferably 6-8.

Preferably, the plurality of discharge cones are distributed annularly or uniformly along the circumferential direction at the lower end of the uniform air inlet device.

Generally, the number of discharge cones is 4-12, preferably 6-10, 6-8.

Generally, the number of air duct branch pipes in the uniform air inlet device is at least one, preferably 2-12, preferably 3-10, more preferably 4-8, and more preferably 6-8.

Preferably, the top end of the inner ring air inlet channel is sealed and the lower end is open.

Generally, the uniform air inlet device includes 1 or 2 inner ring air inlet channels; preferably, when there are 2 inner ring air inlet channels, they are arranged above and below each other.

Preferably, the discharge equipment is a double-deck vibrating feeder; the double-deck vibrating feeder includes a body support, an upper vibrating tank, a lower vibrating tank, and a vibrator; the upper vibrating tank and the lower vibrating tank are arranged on the body support, and the upper vibrating tank Located above the lower vibrating tank, the upper vibrating tank and the lower vibrating tank are respectively connected with the vibrator. Preferably, an adjustment device is provided on the upper vibration tank and/or the lower vibration tank, and the adjustment device adjusts the inclination angle of the bottom plate of the lower vibration tank.

Preferably, the vibrator includes an upper-layer vibrator and a lower-layer vibrator, the upper-layer vibrator is connected to the upper-layer vibration tank, and the lower-layer vibrator is connected to the lower-layer vibration tank. Preferably, the upper vibrating tank and the lower vibrating tank are arranged on the frame of the body through springs.

Preferably, the vertical sinter cooler also includes a control system, the control system is connected with the uniform air intake device, cold sinter conveying device, gate valve, temperature measuring probe, and discharge equipment, and controls the uniform air intake device, cold sintering Operation of ore conveying device, flapper valve, temperature measuring probe, and discharge equipment.

According to the utility model, there is also provided a method for cooling sinter or a method for cooling sinter by using the above-mentioned vertical sinter cooler, the method includes the following steps:

(1) The sinter enters the rotary distributor of the vertical sinter cooler, flows continuously from top to bottom under the action of gravity, enters the vertical chute through the umbrella chute, and then accumulates in the tower body of the cooler;

(2) The uniform air intake device of the vertical sinter cooler transports cooling gas (such as air) into the tower body through the inner ring air inlet channel, and the cooling gas passes through the sinter material layer accumulated in the tower body from bottom to top, and Perform countercurrent heat exchange with sinter, after the heat exchange, the temperature of the cooling gas rises gradually, and is discharged through the sinter material surface in the vertical sinter cooling machine tower to form high-temperature hot air, which is discharged from the hot air outlet through the hot air channel; preferably , the high-temperature hot air is transported to the waste heat utilization system (such as waste heat power generation system);

(3) The sinter accumulated in the tower body of the cooling machine is cooled by countercurrent heat exchange with the cooling gas from bottom to top, and enters the discharge cone bucket at the lower part of the vertical sinter cooler, and then is fed by vibration discharged from the machine or discharged from the apron feeder through the discharge chute or discharge hopper to the cold sinter conveying device; and

(4) The radiant heat recovery device recycles the radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system through the heat recovery pipeline.

Preferably, according to the temperature detected by the temperature measuring probe, the control system controls the operation of the uniform air inlet device, the cold sinter conveying device, the gate valve, the temperature measuring probe, and the discharge equipment.

Preferably, a temperature measuring probe is arranged above each discharge cone, and the control system controls the operation of the corresponding discharge device according to the temperature detected by each temperature measuring probe.

The equipment also has a self-feedback discharge adjustment function. The temperature of the sinter in the corresponding area is detected by the temperature measuring probe. When the temperature of the detected sinter in a certain position in the circumferential direction reaches the cooling effect, the discharge equipment under the discharge cone corresponding to the area is normally opened for normal discharge. On the contrary, reduce the discharge speed of the discharge equipment or close the discharge equipment accordingly, let the sinter in this area cool down for a period of time, and then proceed to normal discharge after the sinter temperature reaches the cooling effect. At the same time, the discharge speed can also be adjusted by adjusting the insertion depth of the gate valve.

In the utility model, generally speaking, the vertical sinter cooler is mainly composed of a rotary distributor, an umbrella-shaped chute, a vertical chute, a tower body, a uniform air inlet device, a cooling section, a discharge cone, and a discharge device. , Composed of hot air outlet.

The rotary distributor is located on the top of the vertical sinter cooler and can rotate along the central axis of the tower body. After the hot sinter enters the rotary distributor, it flows out from the chute of the rotary distributor under the action of gravity and enters the umbrella-shaped chute. During the process, the rotary distributor rotates so that the material can be evenly distributed on the umbrella chute.

The umbrella-shaped chute is an umbrella-shaped chute, the upper end is arranged with a rotary distributor, and the lower end is connected to a vertical chute. The umbrella-shaped chute is divided into upper and lower parts, an integral section and a separate section. The integral section is an integral umbrella-shaped chute, and the separate section is located below the integral section, and is a plurality of umbrella-shaped chutes uniformly distributed along the circumference, and the chutes of the separate sections are isolated. The sintered ore distributed by the rotary distributor is evenly distributed on the umbrella-shaped chute, and continues to flow down through the integral section and the separate section, and enters the vertical chute below.

The vertical chute is a number of vertical channels evenly distributed along the circumference, and each channel corresponds to the umbrella-shaped chute in the separate section of the umbrella-shaped chute. The vertical chute is divided into upper and lower parts by the top cover of the vertical sinter cooler. The hot air channel is formed between the vertical chutes in the tower body, and the hot air between the vertical chutes can flow out from the hot air channel to the material-free space between the outside of the vertical chute and the tower body, and then flow into the material-free space to the hot air outlet for discharge . The sintered ore flowing out from the umbrella-shaped chute flows into the vertical chute, then flows out from the vertical chute downwards, and enters the cooling section, where a uniform annular stockpile is formed.

The cooling section is mainly a shell structure. The sintered ore flowing down through the vertical chute enters the cooling section. In the cooling section, the cooling air blown up from the uniform air inlet device exchanges heat with the sintered ore in the cooling section. The sinter is cooled, and the cooling air after heat exchange becomes hot air, which can be discharged from the free material surface at the top of the cooling section and enter the material-free space. The cooled sinter enters the uniform air inlet device at the lower end of the cooling section, and flows out from the material channel of the uniform air inlet device.

The uniform air inlet device is mainly composed of an outer ring air inlet pipe, an inner ring air inlet duct, and multiple air duct branch pipes. Its main function is to blow cooling air into the cooling section above it to cool the sinter. Among them, the outer ring air inlet pipe is a ring-shaped pipe, and the pressure cooling air delivered by the blower enters the outer ring air inlet pipe, and the outer ring air inlet pipe sends the cooling air evenly to the air duct branch pipe; the inner ring air inlet pipe is a Ring-shaped duct, the two sides of the inner ring air intake duct are louver-type structures, the top of the inner ring air intake duct is sealed, and the lower end is open, and the cooling air is introduced from the outer ring air intake duct into the inner ring air intake duct through the air duct branch pipe The cooling air in the air inlet channel can evenly enter the sintered ore in the cooling section from the louver structures on both sides of the inner ring air inlet channel to cool the sintered ore. Among them, the outer ring air inlet pipe, the inner ring air inlet pipe, and the air duct branch pipes form a material channel, and the sinter flowing down from the cooling section can flow down to the discharge cone through the material channel.

The discharge cone bucket is located at the lower end of the uniform discharge blast section, and several are evenly arranged along the circumferential direction, generally 4-8, and its shape is a special-shaped or circular or conical structure with a large top and a small bottom. The cooled sinter flows into the discharge cone under the action of gravity. A discharge device is connected to the lower end of each discharge cone, and the discharge speed of each discharge cone can be controlled by the discharge device.

In the utility model, the discharge equipment is a vibrating feeder or an apron feeder, and the vibrating feeder or apron feeder is used for discharging, which has the advantages of uniform discharge, convenient maintenance and repair, and small maintenance workload.

The hot air outlet is located on the side wall of the upper tower of the vertical sinter cooler, and communicates with the interior of the material-free space. The hot air in the material-free space is discharged through the hot air outlet and enters the subsequent waste heat power generation system.

Preferably, a gate valve is provided at the lower end of the discharge cone, and the gate valve can be inserted into the discharge cone to stop the material from flowing downward. During normal production, the gate valve is opened, and when the corresponding discharge equipment under the discharge cone needs to be overhauled, the gate valve is inserted into the discharge cone to cut off the material for maintenance.

The hot sinter crushed by the single-roller crusher is transported to the top of the vertical sinter cooler by the hot sinter conveying device, and evenly distributed on the umbrella-shaped chute by the rotating distributor on the top, and flows down through the umbrella-shaped chute In the vertical chute, the sinter flows continuously from top to bottom under the action of gravity, passes through the vertical chute, flows into the cooling section below, and performs countercurrent heat exchange with the cooling air in the cooling section, and the sinter is cooled to below 150°C Finally, it flows downward, flows through the material channel of the uniform air inlet device, enters the discharge cone below, and is discharged to the cold sinter conveying device by the discharge equipment at the lower end of the discharge cone, and then is discharged by the cold sinter The ore conveyor transports the cooled sinter to the next process.

Under the action of the blower, the cooling gas is fed into the cooling section at a certain pressure from the inner ring air inlet channel of the uniform air inlet device, passes through the sintered ore material layer of the cooling section from bottom to top, and flows countercurrently with the sintered ore heat exchange. After the heat exchange, the temperature of the cooling gas rises gradually, and is discharged from the free material surface through the cooling section to form high-temperature hot air. The high-temperature hot air passes through the material-free space above the vertical sinter cooler, and is discharged from the hot air outlet, and the discharged high-temperature hot air enters the subsequent waste heat power generation system.

The surface of high-temperature pellet-shaped sintered ore is viscous, and once it cools, it sticks to each other. The equipment in the prior art often causes difficulty in discharging materials, but the equipment of the utility model solves this problem well.

Generally, the height of the tower body is generally 4-24 meters, preferably 4.5-22 meters, preferably 5-18 meters, preferably 6-12 meters, more preferably 7-10 meters. The outer diameter of the tower body is generally 8-30 meters, preferably 9-27 meters, preferably 10-25 meters, preferably 11-22 meters, more preferably 12-20 meters.

Compared with the prior art, the utility model has the following beneficial technical effects:

In the equipment of the utility model, the material distribution is uniform, the material discharge is uniform, and the air distribution is uniform. It can also adjust the area discharge according to the cooling effect, so the cooling effect of the cooler is good, and the temperature of the hot air is high, which meets the requirements of the sinter countercurrent thick material layer cooling process.

Compared with the prior art annular cooler, the utility model vertical sinter cooler has simple structure, reliable sealing, no air leakage, less equipment maintenance and high waste heat recovery efficiency. The sensible heat recovery rate of sinter can generally reach about 71%, which is the cooling characteristic.

This process can also overcome the problem of secondary sintering of sintered ore in the vertical cooling device and prevent the vertical cooling device from being blocked.

1. The structure is simple, reducing equipment investment, and reducing the operating cost of the equipment;

2. The sealing of the device is good, the heat recovery efficiency of sinter is high, and high-temperature waste gas (hot air) is obtained to generate steam, which is used for power generation in the form of high-temperature steam, and the power generation efficiency is higher;

3. There is no clogging phenomenon in the discharge, which significantly reduces the frequency of shutdown and maintenance;

4. According to the detected temperature of the material above each discharge cone, the temperature can be adjusted by independently controlling the discharge speed of each discharge cone;

5. Sinter radiant heat recovery function: The hot sinter just entering the tower body has a high temperature, and radiates heat energy to the tower body through the surface of the material layer. The radiant heat recovery device installed in the tower body and at the front end of the hot air outlet can recover radiant heat energy and convert It is high-temperature steam, which enters the waste heat power generation system through the heat recovery pipeline.

Description of drawings

Fig. 1 is a structural schematic diagram of a vertical sinter cooler with a rotary distributor of the utility model;

Fig. 2 is the sectional view of A-A position in Fig. 1;

Fig. 3 is the sectional view of B-B position among Fig. 1;

Fig. 4 is the sectional view of C-C position in Fig. 1;

Fig. 5 is the arrangement diagram of the discharge cone bucket of the utility model;

Fig. 6 is a structural schematic diagram of the uniform air inlet device of the present invention;

Fig. 7 is the structural representation of the utility model umbrella-shaped chute;

Fig. 8 is a schematic diagram of the mechanism of the utility model double-deck vibrating feeder provided with two vibrators;

Fig. 9 is a schematic diagram of a mechanism of a vibrator for a double-layer vibrating feeder of the present invention;

Fig. 10 is a structural schematic diagram of another vertical sinter cooler with a rotary distributor of the present invention;

Fig. 11 is a schematic structural view of the third vertical sinter cooler with a rotary distributor of the present invention;

Fig. 12 is the schematic diagram of the radiant heat recoverer of column and tube type;

Figure 13 is a schematic diagram of the layout of the utility model plate feeder;

Fig. 14 is a schematic diagram of a control system of a vertical sinter cooler of the present invention.

Reference signs: 1: Rotary distributor; 2: Umbrella chute; 201: The whole section of the umbrella chute; 202: Separate section of the umbrella chute; 3: Vertical chute; 4: Tower top cover; 5: Tower side Wall; 6: cooling section; 7: hot air channel; 8: uniform air inlet device; 801: outer ring air inlet pipe; 802: air duct branch pipe; 803: inner ring air inlet duct; 804: main air duct; 9: row Material cone hopper; 10: hot air outlet; 11: cold sinter conveying device; 12: flapper valve; 13: temperature measuring probe; 14: plate feeder; 15: discharge chute or unloading hopper; P: vibration feeding Machine; P01: body support; P02: upper vibration tank; P03: lower vibration tank; P04: vibrator; P0401: upper vibrator; P0402: lower vibrator; P05: adjustment device; Water inlet of radiant heat recovery device; F0102: steam outlet of radiant heat recovery device; F02: heat recovery pipeline (steam pipeline); K: control system.

Detailed ways

As shown in Figures 1-13, according to the utility model, a vertical sinter cooler with a rotary distributor is provided, which includes: a rotary distributor 1, an umbrella-shaped chute 2, a vertical chute 3, and The tower body formed by the tower body top cover 4 and the tower body side wall 5, the cooling section 6 and the hot air outlet 10 provided on the top cover or side wall of the tower body; wherein: the umbrella-shaped chute 2 includes an upper integral section 201 and a lower part A separate section 202 with multiple branches, the upper end of the integral section 201 is connected to the rotary distributor 1, each branch of the separated section 202 is connected to a corresponding vertical chute 3 below, and the tower body top cover 4 is arranged on the side wall of the tower body 5, the vertical chute 3 is arranged on the tower body top cover 4, and the lower end of the vertical chute 3 stretches into the tower body, its upper end is connected with the branch end of the separation section 202 of the umbrella-shaped chute 2, and the rotary distributor 1 is set At the top of the umbrella chute 2, the cooling section 6 is arranged at the lower part of the tower body;

The top of the cooling section 6, the gas space (no material space) between the vertical chute 3 and the tower body forms a hot blast channel 7;

A uniform air intake device 8 is provided below the cooling section 6;

A plurality of discharge cones 9 are arranged below the uniform air inlet device 8; and

Discharge equipment is provided below the discharge cone 9.

Preferably, a radiant heat recoverer F01 is provided in the tower body and at the front end of the hot air outlet 10 .

Preferably, the radiant heat recovery device F01 adopts a plate-fin heat exchanger or a tube-and-tube heat exchanger.

F0101 is the water inlet of the radiant heat recovery device F01, and F0102 is the steam outlet of the radiant heat recovery device F01.

Preferably, the discharge equipment is a vibrating feeder P or an apron feeder 14 .

Preferably, a cold sinter conveying device 11 is provided below the end of the vibrating feeder P.

Preferably, the discharge equipment is an apron feeder 14, a discharge chute or a discharge hopper 15 is provided below the outlet of the apron feeder 14, and a cold sinter conveying device is provided below the discharge chute or discharge hopper 15 11.

Preferably, a gate valve 12 is provided at the end of the discharge cone 9 .

Preferably, the lower part of the cooling section 6 (preferably along the circumferential direction) is provided with a temperature measuring probe 13; preferably, the temperature measuring probe 13 is a thermocouple temperature sensor.

Preferably, the uniform air inlet device 8 includes an annular or "C" shaped outer ring air inlet pipe 801, a plurality of air duct branch pipes 802 and an inner ring air inlet duct 803, wherein: the annular or "C" shaped outer ring air inlet pipe 801 is arranged around the outside of the side wall 5 of the tower body, and the inner ring air inlet duct 803 is arranged at the bottom of the tower body. Preferably, the side wall or side of the inner ring air inlet channel 803 is a louver structure.

804 is a main air duct, and the uniform air intake device 8 transports cooling gas (such as air) through the main air duct 804 into the outer ring air intake duct 801 .

Preferably, the number of branches of the divided section 202 of the umbrella chute 2 and the number of the corresponding vertical chute 3 are both 3-12, preferably 4-10, more preferably 6-8.

Preferably, the plurality of discharge cones 9 are distributed annularly or uniformly along the circumferential direction at the lower end of the uniform air inlet device 8 .

Generally, the number of discharge cones 9 is 4-12, preferably 6-10, 6-8.

Generally, the number of air duct branch pipes 802 in the uniform air inlet device 8 is 2-12, preferably 3-10, more preferably 4-8, and more preferably 6-8.

Preferably, the top end of the inner ring air inlet channel 803 is sealed and the lower end is open.

Generally, the uniform air inlet device 8 includes 1 or 2 inner ring air inlet channels 803; preferably, when there are 2 inner ring air inlet channels 803, they are arranged above and below each other.

Preferably, the discharge equipment is a double-layer vibrating feeder P; the double-layer vibrating feeder P includes a body support P01, an upper vibration tank P02, a lower vibration tank P03, and a vibrator P04; the upper vibration tank P02 and the lower vibration tank P03 are set On the body support P01, the upper layer vibration tank P02 is located above the lower layer vibration tank P03, and the upper layer vibration tank P02 and the lower layer vibration tank P03 are respectively connected to the vibrator P04. Preferably, an adjustment device P05 is provided on the upper vibration tank P02 and/or the lower vibration tank P03, and the adjustment 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 vibrating tank P02, and the lower vibrator P0402 is connected to the lower vibrating tank P03. Preferably, the upper vibration tank P02 and the lower vibration tank P03 are arranged on the body support P01 through springs.

Preferably, the vertical sinter cooler also includes a control system K, the control system K is connected with the uniform air intake device 8, the cold sinter conveying device 11, the gate valve 12, the temperature measuring probe 13, and the discharge equipment, and controls the uniform Operation of air inlet device 8, cold sinter conveying device 11, flapper valve 12, temperature measuring probe 13, and discharge equipment.

According to the utility model, there is also provided a method for cooling sinter or a method for cooling sinter by using the above-mentioned vertical sinter cooler, the method includes the following steps:

(1) The sinter enters the rotary distributor 1 of the vertical sinter cooler, flows continuously from top to bottom under the action of gravity, enters the vertical chute 3 through the umbrella chute 2, and then accumulates in the tower body of the cooler ;

(2) The uniform air intake device 8 of the vertical sinter cooler transports cooling gas (such as air) into the tower body through the inner ring air inlet channel 803, and the cooling gas passes through the sinter material layer accumulated in the tower body from bottom to top , and conduct countercurrent heat exchange with the sinter, after the heat exchange, the temperature of the cooling gas gradually rises, and is discharged through the sinter material surface in the vertical sinter cooling tower to form high-temperature hot air, which is discharged from the hot air outlet 10 through the hot air channel 7 ; Preferably, the high-temperature hot air is delivered to the waste heat utilization system (such as waste heat power generation system);

(3) The sinter accumulated in the tower body of the cooling machine is cooled by countercurrent heat exchange with the cooling gas from bottom to top, and enters the discharge cone 9 at the bottom of the vertical sinter cooler, and then is fed by vibration. The feeder P is discharged or is discharged from the apron feeder 14 to the cold sinter conveying device 11 through the discharge chute or the discharge hopper 15; and

(4) The radiant heat recovery device F01 recovers the radiant heat energy of the sinter to generate high-temperature water vapor, and the water vapor enters the waste heat power generation system through the heat recovery pipeline F02.

Preferably, according to the temperature detected by the temperature measuring probe 13, the control system K controls the operation of the uniform air inlet device 8, the cold sinter conveying device 11, the gate valve 12, the temperature measuring probe 13, and the discharge equipment.

Preferably, a temperature measuring probe 13 is arranged above each discharge cone 9 correspondingly, and the control system K controls the operation of the corresponding discharge device according to the temperature detected by each temperature measuring probe 13 .

The equipment also has a self-feedback discharge adjustment function. The sinter temperature in the corresponding area is detected by the temperature measuring probe 13, and when the detected sinter temperature at a certain position in the circumferential direction reaches the cooling effect, the discharge equipment under the discharge cone 9 corresponding to the area is normally opened to carry out Normal discharge, otherwise, reduce the discharge speed of the discharge equipment or close the discharge equipment accordingly, let the sinter in this area cool down for a period of time, and then proceed to normal discharge after the sinter temperature reaches the cooling effect. At the same time, the discharge speed can also be adjusted by adjusting the insertion depth of the gate valve 12 .

Example 1

The height of the tower body is 8 meters, and the outer diameter of the tower body is 13 meters. The height of the discharge cone 9 is 7 meters. The discharge device is a vibrating feeder P. In the tower body, at the front end of the hot air outlet 10, there is a radiant heat recovery device F01; a tube-and-tube heat exchanger is used, as shown in FIG. 12 .

The daily processing capacity of sinter is 8650 tons/day. The temperature of the sintered ore before entering the rotary distributor 1 is about 700°C, and the temperature of the hot air at the hot air outlet 10 reaches about 502°C. The recovered heat is used to generate electricity, and the power generation is about 36 kWh.

Compared with the ring cooler of the prior art, the advantages are: high power generation, low air leakage rate, small dust emission, simple and reliable equipment, and better sealing performance, the technology of the utility model can provide higher temperature hot air for High-temperature steam is generated, which significantly improves power generation efficiency.

This process can also overcome the problem of secondary sintering of sintered ore in the vertical cooling device and prevent the vertical cooling device from being blocked. The device has been in operation for 6 months, and there is no problem of material blocking or jamming.

Example 2

Repeat Example 1, except that the discharge equipment is a plate feeder 14, as shown in Figure 11.

Claims (44)

1. A vertical sinter cooler with a rotary distributor, the cooler comprises: a rotary distributor (1), an umbrella-shaped chute (2), a vertical chute (3), a tower top cover (4) The hot air outlet (10) that constitutes the tower body, the cooling section (6) and the top cover of the tower body or the side wall upper part of the tower body side wall (5); wherein: the umbrella-shaped chute (2) includes the upper integral section ( 201) and the lower part (202) with a plurality of branches, the upper end of the integral section (201) is connected with the rotary distributor (1), and each branch of the split section (202) corresponds to a vertical chute below ( 3) connection, the tower body top cover (4) is arranged on the top of the tower body side wall (5), the vertical chute (3) is arranged on the tower body top cover (4), and the lower end of the vertical chute (3) extends into the tower body, its upper end is connected with the branch end of the split section (202) of the umbrella-shaped chute (2), the rotary distributor (1) is set on the top of the umbrella-shaped chute (2), and the cooling section (6) is set on the tower body lower part of Above the cooling section (6), the gas space between the vertical chute (3) and the tower body forms a hot air channel (7); A uniform air intake device (8) is provided below the cooling section (6); A plurality of discharge cones (9) are arranged below the uniform air intake device (8); and A discharge device is arranged below the discharge cone (9), Wherein the height of the tower body is 4-24 meters. 2. The vertical sinter cooler according to claim 1, characterized in that: a radiant heat recovery device (F01) is provided in the tower body at the front end of the hot air outlet (10). 3. The vertical sinter cooler according to claim 2, characterized in that: the radiant heat recovery device (F01) adopts a plate-fin heat exchanger or a tube-and-tube heat exchanger. 4. The vertical sinter cooler according to any one of claims 1-3, characterized in that: the discharge device is a vibrating feeder (P) or a plate feeder (14). 5. The vertical sinter cooler according to claim 4, characterized in that: a cold sinter conveying device (11) is provided below the end of the vibrating feeder (P); and/or A discharge chute or a discharge hopper (15) is provided below the discharge port of the plate feeder (14), and a cold sinter conveying device (11) is provided below the discharge chute or discharge hopper (15). 6. The vertical sinter cooler according to any one of claims 1-3 or 5, characterized in that: the end of the discharge cone (9) is provided with a slide valve (12); and/or The lower part of the cooling section (6) is provided with a temperature measuring probe (13). 7. The vertical sinter cooler according to claim 4, characterized in that: the end of the discharge cone (9) is provided with a slide valve (12); and/or The lower part of the cooling section (6) is provided with a temperature measuring probe (13). 8. The vertical sinter cooler according to claim 6, characterized in that: the temperature measuring probe (13) is arranged at the lower part of the cooling section (6) along the circumferential direction; the temperature measuring probe (13) is a thermoelectric Dual temperature sensor. 9. The vertical sinter cooler according to claim 7, characterized in that: the temperature measuring probe (13) is arranged at the lower part of the cooling section (6) along the circumferential direction; the temperature measuring probe (13) is a thermoelectric Dual temperature sensor. 10. The vertical sinter cooler according to any one of claims 1-3, 5, 7-9, characterized in that: the uniform air inlet device (8) includes an annular or "C" shaped outer ring inlet Air duct (801), multiple air duct branch pipes (802) and inner ring air inlet duct (803), wherein: the annular or "C" shaped outer ring air inlet pipe (801) is arranged on the side wall of the tower body (5) Around the outer side of the tower, the inner ring air inlet duct (803) is arranged at the bottom of the tower body, and one end of each air duct branch pipe (802) is connected to the outer ring air inlet pipe (801) and the other end is connected to the inner ring air inlet duct (803). 11. The vertical sinter cooler according to claim 4, characterized in that: the uniform air inlet device (8) includes an annular or "C" shaped outer ring air inlet pipe (801), a plurality of air duct branch pipes ( 802) and the inner ring air inlet duct (803), wherein: the annular or "C" shaped outer ring air inlet pipe (801) is arranged around the outside of the tower body side wall (5), and the inner ring air inlet duct (803) Arranged at the bottom of the tower body, one end of each air duct branch pipe (802) is connected to the outer ring air inlet pipe (801) and the other end is connected to the inner ring air inlet duct (803). 12. The vertical sinter cooler according to claim 6, characterized in that: the uniform air inlet device (8) includes an annular or "C" shaped outer ring air inlet pipe (801), a plurality of air duct branch pipes ( 802) and the inner ring air inlet duct (803), wherein: the annular or "C" shaped outer ring air inlet pipe (801) is arranged around the outside of the tower body side wall (5), and the inner ring air inlet duct (803) Arranged at the bottom of the tower body, one end of each air duct branch pipe (802) is connected to the outer ring air inlet pipe (801) and the other end is connected to the inner ring air inlet duct (803). 13. The vertical sinter cooler according to claim 10, characterized in that: the side wall or side of the inner ring air inlet duct (803) is a louver structure. 14. The vertical sinter cooler according to claim 11 or 12, characterized in that: the side wall or side of the inner ring air inlet channel (803) is a louver structure. 15. The vertical sinter cooler according to claim 10, characterized in that: the top end of the inner ring air inlet duct (803) is sealed and the lower end is an opening; and/or The uniform air intake device (8) includes 1 or 2 inner ring air intake ducts (803). 16. The vertical sinter cooler according to any one of claims 11-13, characterized in that: the top end of the inner ring air inlet duct (803) is sealed and the lower end is open; and/or The uniform air intake device (8) includes 1 or 2 inner ring air intake ducts (803). 17. The vertical sinter cooler according to claim 14, characterized in that: the top end of the inner ring air inlet duct (803) is sealed and the lower end is an opening; and/or The uniform air intake device (8) includes 1 or 2 inner ring air intake ducts (803). 18. The vertical sinter cooler according to claim 15 or 17, characterized in that: when there are two inner ring air inlet ducts (803), they are arranged above and below each other. 19. The vertical sinter cooler according to claim 16, characterized in that: when there are two inner ring air inlet passages (803), they are arranged above and below each other. 20. The vertical sinter cooler according to any one of claims 1-3, 5, 7-9, 11-13, 15, 17, 19, characterized in that: the umbrella-shaped chute (2) is separated The number of branches of the section (202) and the number of corresponding vertical chutes (3) are both 3-12. 21. The vertical sinter cooler according to claim 4, characterized in that the number of branches of the split section (202) of the umbrella chute (2) and the number of corresponding vertical chute (3) are both 3 -12 pcs. 22. The vertical sinter cooler according to claim 6, characterized in that the number of branches of the split section (202) of the umbrella chute (2) and the number of corresponding vertical chutes (3) are both 3 -12 pcs. 23. The vertical sinter cooler according to claim 10, characterized in that the number of branches of the split section (202) of the umbrella chute (2) and the number of corresponding vertical chutes (3) are both 3 -12 pcs. 24. The vertical sinter cooler according to claim 20, characterized in that: the number of branches of the split section (202) of the umbrella chute (2) and the number of corresponding vertical chutes (3) are both 4 -10. 25. The vertical sinter cooler according to any one of claims 22-24, characterized in that the number of branches of the split section (202) of the umbrella chute (2) and the corresponding vertical chute (3 ) are all 4-10. 26. The vertical sinter cooler according to any one of claims 1-3, 5, 7-9, 11-13, 15, 17, 19, 21-24, characterized in that: multiple discharges The cone bucket (9) presents an annular distribution at the lower end of the uniform air inlet device (8) or is evenly distributed along the circumferential direction; and/or The number of discharge cone buckets (9) is 4-12; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 2-12. 27. The vertical sinter cooler according to claim 4, characterized in that: a plurality of discharge cones (9) are distributed in a ring at the lower end of the uniform air inlet device (8) or evenly distributed along the circumferential direction; and / or The number of discharge cone buckets (9) is 4-12; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 2-12. 28. The vertical sinter cooler according to claim 6, characterized in that: a plurality of discharge cones (9) are distributed in a ring at the lower end of the uniform air inlet device (8) or evenly distributed along the circumferential direction; and / or The number of discharge cone buckets (9) is 4-12; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 2-12. 29. The vertical sinter cooler according to claim 10, characterized in that: a plurality of discharge cones (9) are distributed in a ring at the lower end of the uniform air inlet device (8) or evenly distributed along the circumferential direction; and / or The number of discharge cone buckets (9) is 4-12; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 2-12. 30. The vertical sinter cooler according to claim 26, characterized in that: the number of discharge cones (9) is 6-10; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 3-10. 31. The vertical sinter cooler according to any one of claims 27-29, characterized in that: the number of discharge cones (9) is 6-10; and/or The number of air duct branch pipes (802) in the uniform air inlet device (8) is 3-10. 32. The vertical sinter cooler according to any one of claims 1-3, 5, 7-9, 11-13, 15, 17, 19, 21-24, 27-30, characterized in that: The discharge equipment is a double-layer vibrating feeder (P); the double-layer vibrating feeder (P) includes the body support (P01), the upper vibration tank (P02), the lower vibration tank (P03), and the vibrator (P04); The upper vibration tank (P02) and the lower vibration tank (P03) are set on the body support (P01), the upper vibration tank (P02) is located above the lower vibration tank (P03), the upper vibration tank (P02) and the lower vibration tank (P03) ) are respectively connected with the vibrator (P04). 33. The vertical sinter cooler according to claim 4, characterized in that: the discharge device is a double-layer vibrating feeder (P); the double-layer vibrating feeder (P) includes a body support (P01), The upper vibration tank (P02), the lower vibration tank (P03), and the vibrator (P04); the upper vibration tank (P02) and the lower vibration tank (P03) are set on the body support (P01), and the upper vibration tank (P02) is located in the lower layer Above the vibration tank (P03), the upper layer vibration tank (P02) and the lower layer vibration tank (P03) are respectively connected with the vibrator (P04). 34. The vertical sinter cooler according to claim 6, characterized in that: the discharge device is a double-layer vibrating feeder (P); the double-layer vibrating feeder (P) includes a body support (P01), The upper vibration tank (P02), the lower vibration tank (P03), and the vibrator (P04); the upper vibration tank (P02) and the lower vibration tank (P03) are set on the body support (P01), and the upper vibration tank (P02) is located in the lower layer Above the vibration tank (P03), the upper layer vibration tank (P02) and the lower layer vibration tank (P03) are respectively connected with the vibrator (P04). 35. The vertical sinter cooler according to claim 10, characterized in that: the discharge device is a double-layer vibrating feeder (P); the double-layer vibrating feeder (P) includes a body support (P01), The upper vibration tank (P02), the lower vibration tank (P03), and the vibrator (P04); the upper vibration tank (P02) and the lower vibration tank (P03) are set on the body support (P01), and the upper vibration tank (P02) is located in the lower layer Above the vibration tank (P03), the upper layer vibration tank (P02) and the lower layer vibration tank (P03) are respectively connected with the vibrator (P04). 36. The vertical sinter cooler according to claim 32, characterized in that an adjustment device (P05) is provided on the upper vibration tank (P02) and/or the lower vibration tank (P03), and the adjustment device (P05) adjusts The inclination angle of the bottom plate of the lower vibration trough (P03). 37. The vertical sinter cooler according to any one of claims 33-35, characterized in that: an adjustment device (P05) is provided on the upper vibration tank (P02) and/or the lower vibration tank (P03), The adjusting device (P05) adjusts the inclination angle of the bottom plate of the lower vibration tank (P03). 38. The vertical sinter cooler according to claim 36, characterized in that the vibrator (P04) includes an upper vibrator (P0401) and a lower vibrator (P0402), and the upper vibrator (P0401) and the upper vibrating tank (P02) connection, the lower vibrator (P0402) is connected to the lower vibration tank (P03). 39. The vertical sinter cooler according to claim 37, characterized in that the vibrator (P04) includes an upper vibrator (P0401) and a lower vibrator (P0402), and the upper vibrator (P0401) and the upper vibrating tank (P02) connection, the lower vibrator (P0402) is connected to the lower vibration tank (P03). 40. The vertical sinter cooler according to claim 38 or 39, characterized in that: the upper vibrating tank (P02) and the lower vibrating tank (P03) are set on the body support (P01) by springs. 41. Vertical sintering according to any one of claims 1-3, 5, 7-9, 11-13, 15, 17, 19, 21-24, 27-30, 33-36, 38-39 The ore cooler is characterized in that: the vertical sinter cooler also includes a control system (K), the control system (K) and the uniform air inlet device (8), the cold sinter conveying device (11), the slide valve ( 12), connect the temperature measuring probe (13), discharge equipment, and control the uniform air intake device (8), cold sinter conveying device (11), plug-in valve (12), temperature measuring probe (13), discharge operation of the device. 42. The vertical sinter cooler according to claim 4, characterized in that: the vertical sinter cooler also includes a control system (K), the control system (K) and the uniform air inlet device (8), cooling The sinter conveying device (11), the slide valve (12), the temperature measuring probe (13), the discharge equipment are connected, and the uniform air intake device (8), the cold sinter conveying device (11), the slide valve ( 12), the temperature measuring probe (13), the operation of the discharge equipment. 43. The vertical sinter cooler according to claim 6, characterized in that: the vertical sinter cooler also includes a control system (K), the control system (K) and the uniform air inlet device (8), cooling The sinter conveying device (11), the slide valve (12), the temperature measuring probe (13), the discharge equipment are connected, and the uniform air intake device (8), the cold sinter conveying device (11), the slide valve ( 12), the temperature measuring probe (13), the operation of the discharge equipment. 44. The vertical sinter cooler according to claim 10, characterized in that: the vertical sinter cooler also includes a control system (K), the control system (K) and the uniform air inlet device (8), cooling The sinter conveying device (11), the slide valve (12), the temperature measuring probe (13), the discharge equipment are connected, and the uniform air intake device (8), the cold sinter conveying device (11), the slide valve ( 12), the temperature measuring probe (13), the operation of the discharge equipment.