CN217377921U

CN217377921U - Air-water jet device for suspension conveying and cooling in blast furnace slag granulation process

Info

Publication number: CN217377921U
Application number: CN202221300650.4U
Authority: CN
Inventors: 李有怀; 肖永力; 孔飞; 聂永秀; 陈俊
Original assignee: Jiangsu Boji Spraying Systems Holding Co ltd
Current assignee: Jiangsu Boji Spraying Systems Holding Co ltd
Priority date: 2022-05-28
Filing date: 2022-05-28
Publication date: 2022-09-06
Anticipated expiration: 2032-05-28

Abstract

The utility model belongs to the technical field of blast furnace slag treatment, in particular to a gas-water jet device for suspension conveying and cooling in a blast furnace slag granulation process, which comprises a guide cylinder, wherein the top of the upper end of the guide cylinder is provided with a liquid blast furnace slag feed inlet, one side of the guide cylinder is provided with a granulation water jet device and a water-gas control device, a gas-water spray gun assembly is arranged in the guide cylinder, and after a gas-water jet device is added in a water impact blast furnace slag granulation area, a gas-water jet device fog field is sprayed around blast furnace slag; the fog field and the slag particles fully exchange heat, so that the slag particles are accelerated to be cooled and completely changed into a solid state, the mutual adhesion of part of the slag particles is eliminated, and the recovery of the heat energy of the steam is increased; providing a certain lifting force to the slag flow field, and enabling the flow field of the blast furnace slag to move in a suspending manner according to a preset track; the effective tube bundle force of the jet flow fog field of the water jet device reduces the chance that splashed slag particles impact the inner wall of the guide cylinder, and greatly prolongs the service life of the guide cylinder.

Description

Air-water jet device for suspension conveying and cooling in blast furnace slag granulation process

Technical Field

The utility model belongs to the technical field of blast furnace slag is handled, concretely relates to blast furnace slag granulation process suspension is carried and is used air water jet device for cooling.

Background

With the progress of science and technology, the original directly-discarded industrial blast furnace slag (1500 ℃) is granulated by water jet at present and then is used as the raw material of other industrial products; the hot steam generated in the slag granulation process is purified and heat exchanged to transfer the heat energy to industrial online raw materials such as oxygen, coal gas and the like to be used, thereby saving a large amount of production cost.

At present, blast furnace slag granulation waste heat recovery is carried out by impacting slag with water under certain pressure. However, there are some problems with the performance of granulation:

1. part of granulated slag particles are mutually bonded into different shapes (shapes of lumps, blocks, strips, nets and the like).

2. The inner wall of the guide shell has the phenomenon of slag particle adhesion, and the slag particles impact the inner wall of the guide shell to cause serious abrasion. Therefore, the granulation process is still not smooth, the cost is high, and the economic benefit is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a gas-water jet device for suspension conveying and cooling in the blast furnace slag granulation process, which has the advantages that slag particles are not bonded with each other, the inner wall of a guide cylinder is not provided with the slag particles, and the slag particles do not impact the inner wall of the guide cylinder to generate abrasion; the flow field of the blast furnace slag moves in a suspension way according to a preset track; the water consumption is low, and the water evaporation efficiency is high; the granulation process is smooth, the cost is low, and the economic benefit is high.

In order to achieve the above object, the utility model provides a following technical scheme: the gas-water jet device for suspension conveying and cooling in the blast furnace slag granulation process comprises a guide cylinder, wherein a liquid blast furnace slag feeding hole is formed in the top of the upper end of the guide cylinder, a granulation water jet device is arranged on one side of the guide cylinder, a water vapor control device is arranged in the guide cylinder, a gas mist spray gun assembly is connected between the water vapor control device and the gas mist spray gun assembly, a water source, compressed air and a power supply are connected between the water vapor control device and the gas mist spray gun assembly, and the guide cylinder is provided with a heat insulation layer; aerial fog spray gun subassembly includes a plurality of double-end air water spray gun, just double-end air water spray gun is two liang of a set of settings, two of every group double-end air water spray gun is in the inside symmetric distribution that is of draft tube, the one end of double-end air water spray gun is provided with flange, the inside jet-propelled pipe that is provided with of double-end air water spray gun, double-end air water spray gun one side still is provided with the spray pipe.

As the utility model discloses a blast furnace slag granulation process suspension is carried cooling and is used preferred technical scheme of gas water jet device, it is fixed that double-end air water spray gun passes through flange and is connected double-end air water spray gun interface with aqueous vapor controlling means upper end, the jet-propelled pipe of double-end air water spray gun upper end is connected with the compressed air that aqueous vapor controlling means and aerosol spray gun subassembly are connected, the spray pipe of double-end air water spray gun upper end is connected with the water source that aqueous vapor controlling means and aerosol spray gun subassembly are connected.

As the utility model discloses a blast furnace slag granulation process suspension is carried and is cooled down with preferred technical scheme of gas water jet device, the draft tube is 10 slope settings with ground.

As the utility model discloses a blast furnace slag granulation process suspension is carried and is cooled down with gas water jet device preferred technical scheme, two shower nozzles and draft tube of double-end gas water spray gun upper end are 40 contained angles.

As the utility model discloses a blast furnace slag granulation process suspension is carried and is cooled down with preferred technical scheme of gas water jet device, aerial fog spray gun subassembly and draft tube are perpendicular setting and evenly distributed inside the draft tube.

Compared with the prior art, the beneficial effects of the utility model are that: after the air-water jet device is added in the water impact blast furnace slag granulation area, the fog field of the air-water jet device surrounds the blast furnace slag to spray, and the following advantages can be achieved:

1. the mist field and the slag particles fully exchange heat, so that the cooling of the slag particles is accelerated to be completely changed into a solid state, the mutual adhesion of part of slag particles is eliminated, and the recovery of steam heat energy is increased;

2. providing a certain lifting force to the slag flow field, so that the flow field of the blast furnace slag moves in a suspension manner according to a preset track;

3. the effective tube bundle force of the jet flow fog field of the water jet device reduces the chance that splashed slag particles impact the inner wall of the guide cylinder, and greatly prolongs the service life of the guide cylinder.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a side view of a middle draft tube and an aerosol spray gun assembly of the present invention;

in the figure: 1. a draft tube; 2. a liquid blast furnace slag feed inlet; 3. a granulating water jet device; 4. a water-gas control device; 5. an aerosol spray gun assembly; 6. a double-head gas-water spray gun; 7. a connecting flange; 8. a gas ejector tube; 9. and a water spray pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a blast furnace slag granulation process suspension is carried and is cooled down gas water jet device, includes

draft tube

1, and 1 upper end top of draft tube is provided with liquid blast furnace

slag feed inlet

2, and 1 one side of draft tube is provided with granulation water jet device 3, still includes aqueous vapor controlling

means

4, and 1 inside aerial fog spray gun subassembly 5 that is provided with of draft tube is connected with water source, compressed air and power between aqueous vapor controlling means 4 and aerial fog spray gun subassembly 5, and draft tube 1 has the layer that insulates against heat.

Specifically, aerial fog spray gun subassembly 5 includes a plurality of double-end air water spray gun 6, and double-end air water spray gun 6 is two liang of a set of settings, and two double-end air water spray guns 6 of every group are the symmetric distribution in 1 inside of draft tube, and the one end of double-end air water spray gun 6 is provided with

flange

7, 6 inside jet-propelled pipes 8 that are provided with of double-end air water spray gun, and 6 one side of double-end air water spray gun still are provided with spray pipe 9.

Specifically, the double-end air water spray gun 6 is fixedly connected with the upper end of the water gas control device 4 through a connecting flange 7, an interface of the double-end air water spray gun 6 is fixed, an air spraying pipe 8 at the upper end of the double-end air water spray gun 6 is connected with compressed air connected with the water gas control device 4 and the air mist spray gun assembly 5, and a water spraying pipe 9 at the upper end of the double-end air water spray gun 6 is connected with a water source connected with the water gas control device 4 and the air mist spray gun assembly 5.

Specifically, the draft tube 1 is inclined at 10 degrees with the ground, and the central axis of the draft tube and the horizontal plane form an included angle of about 10 degrees in the embodiment, so that the granulated slag-grain mixture can smoothly flow.

Specifically, two spray heads at the upper end of the double-head air-water spray gun 6 form an included angle of 40 degrees with the guide cylinder 1.

Specifically, aerial fog spray gun subassembly 5 is perpendicular setting and evenly distributed inside draft tube 1 with draft tube 1, after the combination of two many shower nozzles aerial fog spray guns in this embodiment, on realizing the appropriate diameter on the draft tube section apart from the water impact blast furnace slag granulation district certain distance, shower nozzle evenly distributed, single shower nozzle injection angle 60, the spout direction of shower nozzle is the same with blast furnace slag carries out the flow field direction of granulating, the axis of shower nozzle and draft tube the central axis become certain angle, two many shower nozzles aerial fog spray guns longitudinal symmetry install to the regulation of jet strength.

The utility model discloses a theory of operation and use flow: after the two multi-nozzle aerial fog spray guns are combined, the aim that the spray heads are uniformly distributed on the proper diameter of the section of the guide cylinder at a certain distance from a water impact blast furnace slag granulation area is realized, the spray angle of a single spray head is 60 degrees, the nozzle direction of the spray head is the same as the flow field direction of blast furnace slag granulation, the axis of the spray head forms a certain angle with the central axis of the guide cylinder, the two multi-nozzle aerial fog spray guns are vertically and symmetrically arranged so as to adjust the spray intensity and provide proper ascending and descending force for the slag flow field, so that the flow field of the blast furnace slag floats and moves according to a preset track, and the central axis of the guide cylinder forms an included angle of about 10 degrees with the horizontal plane, so that slag particle mixtures after granulation can smoothly flow; the utility model discloses control through aqueous vapor controlling means 4 during the use, 4 external water sources of aqueous vapor controlling means, a power supply, compressed air, granulation water jet device 3 is connected to the power, aerial fog spray gun subassembly 5 is connected to water source and compressed air, the equipment is opened during the use, granulation water jet device 3 adds blast furnace slag from liquid blast furnace slag feed inlet 2, granulation water jet device 3 is at 1 inside formation flow field reference mark A of draft tube, 5 upper end nozzles of aerial fog spray gun subassembly form fog field reference mark B simultaneously, the blast furnace slag of pouring into from liquid blast furnace slag feed inlet 2 this moment is inside through draft tube 1 fast, granulation water jet device 3 and aerial fog spray gun subassembly 5 cool down simultaneously.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a blast furnace slag granulation process suspension is carried and is used gas water jet device for cooling, includes draft tube (1), draft tube (1) upper end top is provided with liquid blast furnace slag feed inlet (2), draft tube (1) one side is provided with granulation water jet device (3), its characterized in that: the air guide cylinder is characterized by further comprising a water-gas control device (4), an aerial fog spray gun assembly (5) is arranged inside the air guide cylinder (1), a water source, compressed air and a power supply are connected between the water-gas control device (4) and the aerial fog spray gun assembly (5), and the air guide cylinder (1) is provided with a heat insulation layer;

aerial fog spray gun subassembly (5) includes a plurality of double-end air water spray gun (6), just double-end air water spray gun (6) are two liang of a set of setting, two of every group double-end air water spray gun (6) are in guide cylinder (1) inside is symmetric distribution, the one end of double-end air water spray gun (6) is provided with flange (7), double-end air water spray gun (6) inside is provided with jet-propelled pipe (8), double-end air water spray gun (6) one side still is provided with spray pipe (9).

2. The blast furnace slag granulation process suspension conveying air-water jet device for cooling as claimed in claim 1, wherein: double-end air water spray gun (6) are connected double-end air water spray gun (6) interface through flange (7) and aqueous vapor controlling means (4) upper end and are fixed, air-jet pipe (8) of double-end air water spray gun (6) upper end are connected with the compressed air that aqueous vapor controlling means (4) and aerosol spray gun subassembly (5) are connected, spray pipe (9) of double-end air water spray gun (6) upper end are connected with the water source that aqueous vapor controlling means (4) and aerosol spray gun subassembly (5) are connected.

3. The blast furnace slag granulation process suspension conveying cooling gas-water jet device as claimed in claim 1, wherein: the guide shell (1) is inclined at an angle of 10 degrees with the ground.

4. The blast furnace slag granulation process suspension conveying cooling gas-water jet device as claimed in claim 1, wherein: two spray heads at the upper end of the double-head air water spray gun (6) form an included angle of 40 degrees with the guide cylinder (1).

5. The blast furnace slag granulation process suspension conveying cooling gas-water jet device as claimed in claim 1, wherein: the aerosol spray gun component (5) and the guide shell (1) are vertically arranged and evenly distributed inside the guide shell (1).