CN210638528U - Vertical tank type cooling device for sinter - Google Patents

Abstract

The utility model relates to a cooling technology field especially relates to a vertical tank formula cooling device of sintering deposit, characterized by: at least comprises the following steps: sintering machine, discharge hopper, material loading dolly, hoist engine, receiving hopper, gate, upper portion feed bin, cooling space, cloth wind unit, discharge tube way, drag chain conveyor, there is a two gate gates receiving the hopper lower half, is the upper portion feed bin below the two gate gates, has the cooling space at upper portion feed bin lower extreme, and the lower part of cooling space is the cloth wind unit. The method is convenient for improving the temperature of flue gas recovered by cooling the sinter, efficiently recovers waste heat resources, and improves the recovery efficiency of the waste heat of the sinter to the maximum extent.

Description

Vertical tank type cooling device for sinter

Technical Field

The utility model relates to a cooling technology field especially relates to a vertical tank formula cooling device of sintering deposit.

Technical Field

The steel industry is the big household of energy consumption of our country, account for about 15% of the national total energy consumption, in the steel production, the energy consumption position of the sintering link is listed as the second, wherein the sensible heat of the hot sintering ore accounts for more than 40% of the total energy consumption of sintering, the sensible heat of the sintering ore is recycled with high efficiency, it is one of the effective ways to improve the energy efficiency of the steel industry.

In addition, the problems of fluctuation of recovered waste heat parameters, air leakage of a cooling device system and low waste heat recovery efficiency in the current waste heat recovery process of cooling the sinter are solved, and the problem of low flue gas temperature (generally about 300 ℃) is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vertical jar formula cooling device of sintering deposit and method to improve the flue gas temperature that the cooling sintering deposit was retrieved, waste heat resource is retrieved to the high efficiency, furthest's improvement sintering deposit waste heat recovery efficiency.

The utility model aims at realizing like this, a sintering deposit erects jar formula cooling device, characterized by: at least comprises the following steps: sintering machine, discharge hopper, material loading dolly, hoist engine, receiving hopper, gate, upper portion feed bin, cooling space, cloth wind unit, discharge tube way, drag chain conveyor, there is a two gate gates receiving the hopper lower half, is the upper portion feed bin below the two gate gates, has the cooling space at upper portion feed bin lower extreme, and the lower part of cooling space is the cloth wind unit.

The furnace is characterized in that a furnace charge channel is arranged in the upper storage bin, the outer part of the upper storage bin is provided with an inner wall of a smoke gathering area, the furnace charge channel and the interfaces of the inner wall and furnace charges on a furnace wall, a furnace top and a lower part form the smoke gathering area, and one side of the upper part of the furnace wall is provided with a smoke outlet.

The air distribution unit is positioned at the lower part of the cooling area, the central position of the upper part of the air distribution unit is provided with an air cap, the central position is radially and circumferentially distributed with partition walls to enable the air distribution unit to form a grid shape, two sides of each partition wall are provided with cooling air channels, and the cooling air channels enable the cooling area to be communicated with air chambers at the lower part of the air distribution unit.

The middle part of the air distribution unit consists of 1 central air chamber and a plurality of peripheral air chambers which are mutually separated, each peripheral air chamber is connected with an air inlet, and each air inlet is provided with a multi-plate flap valve which can adjust the air inlet amount; the outlet of each peripheral air chamber is communicated with the cooling area.

Air distribution unit) bottom is continuous with a plurality of row's material pipeline, row's material pipeline middle section is equipped with the needle valve, every row expects that the pipeline lower extreme is equipped with the vibratory feeder, the vibratory feeder lower extreme is equipped with drag conveyer.

The utility model discloses the beneficial effect who brings does:

① the heat exchange between the sinter and the air in a basically closed environment, the heat exchange from the sintering machine outlet to the cooling furnace inlet is a closed aisle, the cooling furnace body and the air distribution unit can realize sealing, the discharging device can also realize sealing, the defects of serious air leakage and low waste heat utilization rate of the current sinter cooling system can be effectively changed, the efficient replacement of heat energy is realized, the flue gas temperature is increased (more than or equal to 400 ℃), the cooling energy consumption is reduced, the smoke leakage is greatly reduced, and the improvement on the whole environment is very favorable;

② the cooling furnace is provided with an upper bin, which can reduce the fluctuation of the recovered flue gas temperature and the flue gas output caused by the discontinuity of the sinter production, is beneficial to the stable operation of the waste heat utilization device, simultaneously, the temperature in the upper bin can be maintained at about 650 ℃, is beneficial to the homogenization of the temperature of ore particles, the material storage of the upper bin can prevent a small amount of hot furnace gas from overflowing, and simultaneously, the cold air caused by the micro negative pressure in the furnace can be prevented from entering the furnace.

③ the sintered ore moves downward in the cooling furnace by its own weight, and the ore and ore are slightly rubbed and collided with each other, which is beneficial to improving the uniformity of the particle size of the sintered ore and improving the strength of the sintered ore.

Drawings

The invention will be further explained with reference to the drawings of the embodiments:

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

FIG. 2 is a schematic view of an upper silo structure;

FIG. 3 is a schematic structural diagram of a wind distribution unit;

fig. 4 is a sectional view taken along line a-a of fig. 3.

The figure is marked with 1, a single-roller crusher; 2. A discharge hopper; 3. a discharging material gate; 4. a feeding trolley; 5. a winch; 6. a receiving hopper; 7. a gate; 8. an upper storage bin; 9. a cooling zone; 10. a hood; 11. a wind distribution unit; 12. a discharge conduit; 13. a needle valve; 14. a vibratory feeder; 15. a central air chamber; 16. a peripheral air chamber; 17. an air inlet; 18. a multi-plate flap valve; 19. a chain scraper conveyor; 20. a smoke outlet; 21. a partition wall; 22. a cooling air passage; 23. a charge channel; 24. an inner wall; 25. a furnace wall; 26. a furnace roof; 27. a charge interface.

Detailed Description

As shown in fig. 1, a shaft pot type cooling apparatus for sintered ore includes at least: the device comprises a sintering machine, a discharge hopper 2, a feeding trolley 4, a winch 5, a receiving hopper 6, a gate 7, an upper bin 8, a lower cooling area 9, an air distribution unit 11, a discharge pipeline 12 and a chain plate conveyor 19, wherein the lower half part of the receiving hopper 6 is provided with the gate 7 with double doors, the upper bin 8 is arranged below the gate 7, the gate 7 is opened during charging, and the gate is closed during intermittent feeding; the upper bunker 8 stores mineral aggregate; the lower cooling area 9 and the air distribution unit 11 are sequentially arranged at the lower end of the upper storage bin 8; the lower part of the lower cooling area 9 is provided with an air distribution unit 11; the upper material bin 8 uniformly and continuously supplies hot sintering ores to the lower cooling area 9, and the hot sintering ores are uniformly distributed on the inverted cone-shaped air distribution unit 11 which is high in the middle and low in the periphery and has an air permeability function.

The export of sintering machine is provided with single roll crusher 1, the 2 entrys of single roll crusher 1's exit linkage discharge hopper, the export of discharge hopper 2 is equipped with unloading material floodgate 3, 4 feeds to the control feeding dolly, feeding dolly 4 promotes to the furnace roof with hoist engine 5, upper portion feed bin 8 is packed into through receiving hopper 6, the gate 7 of a two divisions of doors has been adorned at receiving hopper 6 lower half, open during the material loading, close during the material loading intermittent type, the mineral aggregate is stored to upper portion feed bin 8, 8 even lower parts cooling space 9 supplies with hot sintering deposit in succession in upper portion feed bin, evenly distributed is on middle height back taper cloth wind unit 11 with ventilation function that hangs down all around.

As shown in fig. 2, a charging material channel 23 is arranged inside the upper bin 8, an inner wall 24 of a smoke collecting area is arranged outside the upper bin 8, the charging material channel 23, the inner wall 24, a furnace wall 25, a furnace top 26 and a charging material interface 27 at the lower part form the smoke collecting area, and a smoke outlet 20 is arranged at one side of the upper part of the furnace wall 25 and can lead out smoke to enter the next process.

As shown in fig. 3 and 4: the air distribution unit 11 is located at the lower part of the cooling area 9, the upper center of the air distribution unit 11 is provided with an air cap 10, the center is provided with partition walls 21 radially and circumferentially distributed around, so that the air distribution unit 11 forms a grid shape (see fig. 4), two sides of each partition wall 21 are provided with cooling air channels 22, and the cooling area 9 is communicated with each air chamber at the lower part of the air distribution unit 11 through the cooling air channels 22.

The middle part of the air distribution unit 11 consists of 1 central air chamber 15 and a plurality of peripheral air chambers 16 which are mutually separated, each peripheral air chamber 16 is connected with an air inlet 17, and each air inlet 17 is provided with a multi-plate flap valve 18 which can adjust the air inlet amount; the outlet of each peripheral plenum 16 communicates with the cooling zone 9.

The bottom of the air distribution unit 11 is connected with a plurality of discharging pipelines 12, needle valves 13 are arranged in the middle sections of the discharging pipelines 12 and used for adjusting the discharging nonuniformity, a vibration feeder 14 is arranged at the lower end of each discharging pipeline 12 and used for quantitatively discharging the sintering ore, and a chain scraper conveyor 19 is arranged at the lower end of each vibration feeder 14 and can convey the discharged sintering ore out of the system.

A method of vertical shaft cooling of sinter comprising at least: the single-roll crusher comprises a single-roll crusher 1, wherein the outlet of the single-roll crusher 1 is connected with a discharge hopper 2, the lower part of the discharge hopper 2 is provided with a discharge gate 3 and a feeding trolley 4, the feeding trolley 4 receives materials under the discharge hopper 2, the furnace burden of the feeding trolley 4 is lifted to a receiving hopper 6 at the top of a cooling tank by a winch 5, a gate 7 is arranged in the receiving hopper 6, the receiving hopper 6 is connected with the upper opening of an upper material bin 8, and the lower opening of the material bin 8 is communicated with a cooling area 9 of the cooling tank; the method comprises the following steps:

hot sinter from a sintering machine falls into a discharge hopper 2 after being crushed by a single-roller crusher 1, is loaded into a loading trolley 4 through a discharge material gate 3, the trolley and furnace charge are lifted to the top of a tank by a winch 5, and are loaded into an upper storage bin 8 through a receiving hopper 6, a gate 7 is arranged in the receiving hopper 6, and the material gate is opened when loading; when the feeding is interrupted, the material gate is closed to reduce the heat loss of the sintered ore in the upper bin 8, and the sintered ore in the upper bin 8 is continuously supplied to the cooling area 9 under the action of gravity.

After being regulated by a multi-plate flap valve, the circulating cooling gas enters each independent central air chamber 15 and each independent peripheral air chamber 16 at the lower part of the air distribution unit 11 from the air inlet 17 and is blown into the cooling area 9 through the air duct of the air distribution unit 11;

the circulating cooling gas and the high-temperature sintering ore perform countercurrent heat exchange in the cooling area 9, and the heated high-temperature flue gas enters a collecting area at the upper part of the cooling furnace and enters a waste heat utilization system through a smoke outlet 20;

the cooled sintering ore enters a discharge pipeline 12, a needle valve 13 is arranged in the middle section of the discharge pipeline 12, the unevenness of discharging is adjusted, the vibration feeder 14 quantitatively discharges the sintering ore, and the discharged sintering ore is conveyed out of the system through a chain plate conveyor 19.

The outlet of the sintering machine and the inlet of the bin 8 at the upper part of the cooling furnace are sealed feeding channels, and the cooling furnace body, the air distribution unit 11 and the discharging device are also sealed, so that heat exchange is basically carried out between the sintered ore and air in a sealed environment, and efficient replacement of heat energy is realized.

The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims (5)

1. The utility model provides a vertical tank formula cooling device of sinter which characterized by: at least comprises the following steps: the sintering machine, discharge hopper (2), material loading dolly (4), hoist engine (5), receive material funnel (6), gate (7), upper portion feed bin (8), cooling space (9), cloth wind unit (11), arrange material pipeline (12), drag chain conveyor (19), there is gate (7) of two divisions of doors receiving material funnel (6) lower half, be upper portion feed bin (8) below gate (7) of two divisions of doors, there is cooling space (9) at upper portion feed bin (8) lower extreme, the lower part of cooling space (9) is cloth wind unit (11).

2. The vertical sinter ore pot cooling device as claimed in claim 1, wherein: the furnace is characterized in that a furnace material channel (23) is arranged in the upper storage bin (8), an inner wall (24) of a smoke gathering area is arranged outside the upper storage bin (8), the furnace material channel (23), the inner wall (24), a furnace wall (25), a furnace top (26) and a furnace material interface (27) at the lower part form the smoke gathering area, and a smoke exhaust port (20) is formed in one side of the upper part of the furnace wall (25).

3. The vertical sinter ore pot cooling device as claimed in claim 1, wherein: the air distribution unit (11) is positioned at the lower part of the cooling area (9), an air cap (10) is arranged at the center of the upper part of the air distribution unit (11), partition walls (21) are radially and circumferentially distributed at the center of the upper part of the air distribution unit (11), the air distribution unit (11) is in a grid shape, cooling air channels (22) are arranged at two sides of each partition wall (21), and the cooling area (9) is communicated with air chambers at the lower part of the air distribution unit (11) through the cooling air channels (22).

4. The vertical sinter ore pot cooling device as claimed in claim 1, wherein: the middle part of the air distribution unit (11) consists of 1 central air chamber (15) and a plurality of peripheral air chambers (16) which are mutually separated, each peripheral air chamber (16) is connected with one air inlet (17), and each air inlet (17) is provided with a multi-plate flap valve (18) which can adjust the air inlet amount; the outlet of each peripheral air chamber (16) is communicated with the cooling area (9).

5. The vertical sinter ore pot cooling device as claimed in claim 1, wherein: the bottom of the air distribution unit (11) is connected with a plurality of discharging pipelines (12), needle valves (13) are installed in the middle sections of the discharging pipelines (12), a vibration feeder (14) is installed at the lower end of each discharging pipeline (12), and a chain plate conveyor (19) is installed at the lower end of each vibration feeder (14).

Images