CN111306535B

CN111306535B - Slag cooler

Info

Publication number: CN111306535B
Application number: CN202010200127.3A
Authority: CN
Inventors: 甘政; 雷秀坚; 谢雄; 陈志远; 张娜; 胡开年
Original assignee: Sichuan Baima Circulating Fluidized Bed Demonstration Power Station Co ltd; Shenhua Guoneng Group Corp Ltd
Current assignee: Sichuan Baima Circulating Fluidized Bed Demonstration Power Station Co ltd; Shenhua Guoneng Group Corp Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2021-08-27
Anticipated expiration: 2040-03-20
Also published as: CN111306535A

Abstract

The invention discloses a slag cooler which comprises a rotary cylinder body, a cylindrical isolating piece and a slag dispersing device, wherein the rotary cylinder body is provided with an inner cavity, the slag dispersing device comprises a plurality of slag dispersing plates, the slag dispersing plates are arranged in the inner cavity, the slag dispersing plates are arranged at intervals along the axis direction of the rotary cylinder body, an opening communicated with the inner cavity is formed in the first end of the rotary cylinder body, the first end of the cylindrical isolating piece is connected with the inner wall of the rotary cylinder body, the second end of the cylindrical isolating piece is flush with the opening, the second end of the cylindrical isolating piece is an air outlet, a feeding hole is formed between the second end of the cylindrical isolating piece and the opening, a plurality of feeding holes communicated with the inner cavity are formed in the cylindrical isolating piece at intervals, and a discharging hole and an air inlet hole which are communicated with the inner cavity are formed in the second end of the rotary cylinder body. The problem of the easy jam phenomenon that produces of present cold sediment ware is solved to this scheme.

Description

Slag cooler

Technical Field

The invention relates to the technical field of industrial equipment, in particular to a slag cooler.

Background

The waste slag flowing out of the circulating fluidized bed boiler used in industry generally has higher temperature, therefore, a corresponding slag cooler, such as a roller slag cooler, is needed to be arranged in the circulating fluidized bed boiler, the cooling principle of the roller slag cooler is to introduce the bottom slag discharged by the circulating fluidized bed into a rotating roller through a pipeline, a water pipe is arranged in an interlayer of the roller or the rotating roller, and the waste slag is cooled by medium water in the water pipe, however, the recovery effect of the heat energy generated by the waste slag is poor in this way, and larger heat loss is caused.

In another mode, the waste residue is cooled and heat energy is recovered by adopting a wind-water combined cooling method, so that the waste residue can be cooled, and the heat loss can be effectively reduced. However, in the operation process, the inner cavity of the slag cooler is easy to agglomerate, so that the slag cooler is easy to block by waste slag, and the operation of the slag cooler is influenced.

Disclosure of Invention

The invention discloses a slag cooler, which aims to solve the problem that the existing slag cooler is easy to block.

In order to solve the problems, the invention adopts the following technical scheme:

a slag cooler comprises a rotary cylinder, a cylindrical partition and a slag spreader, wherein:

the rotating cylinder is provided with an inner cavity, the slag dispersing device comprises a plurality of slag dispersing plates, the slag dispersing plates are arranged in the inner cavity and are arranged at intervals along the axial direction of the rotating cylinder, and an opening communicated with the inner cavity is formed in the first end of the rotating cylinder;

the first end of tube-shape separator with the inner wall of rotatory barrel links to each other, the second end of tube-shape separator with the opening parallel and level, just the second end of tube-shape separator is the air outlet, the second end of tube-shape separator with form the feed inlet between the opening, the tube-shape separator interval seted up a plurality of with the feed port of inner chamber intercommunication, the second end of rotatory barrel be provided with the discharge gate and the fresh air inlet of inner chamber intercommunication.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the slag cooler disclosed by the embodiment of the invention, the waste slag in the inner cavity can be cooled and heat energy can be recovered by ventilating the inner cavity of the rotary cylinder, and meanwhile, the waste slag in the inner cavity can be sufficiently lifted by the plurality of slag dispersing plates arranged at intervals in the axial direction of the rotary cylinder, so that the slag cooler can be prevented from being blocked by waste slag caking generated in the inner cavity, gas entering the inner cavity can be in good contact with the waste slag, the waste slag can be well cooled, more heat can be recovered, and the waste heat recovery efficiency of the slag cooler can be improved.

Drawings

The accompanying drawings, which 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 view of a partial structure of a slag cooler disclosed in the embodiment of the invention;

FIG. 2 is a sectional view of the slag cooler disclosed in the embodiment of the invention.

Description of reference numerals:

100-rotating cylinder, 110-inner cavity, 120-opening, 130-gear;

200-cylindrical spacer, 210-feed hole;

300-a slag remover, 310-a slag removing plate and 320-a heat exchange tube;

410-an air outlet, 420-a feed inlet and 430-a discharge outlet;

500-air distribution chamber, 510-air inlet hole and 520-blast cap;

600-an air inlet pipe;

700-pore plate, 710-discharge hole;

810-a first header pipe, 820-a second header pipe and 830-a branch pipe;

900-annular baffle plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 2, the embodiment of the invention discloses a slag cooler, which comprises a rotary cylinder 100, a cylindrical partition 200 and a slag spreader 300.

The rotary cylinder 100 is a main component of the slag cooler, the gear 130 may be disposed on the outer side of the rotary cylinder 100, and the gear 130 may be engaged with a driving shaft of the driving motor, in this case, the driving motor may drive the rotary cylinder 100 to rotate, so as to recover waste heat during the rotation process.

Rotatory barrel 100 has inner chamber 110, slag scattering device 300 includes a plurality of slag scattering plates 310, a plurality of slag scattering plates 310 set up in inner chamber 110, and a plurality of slag scattering plates 310 set up along the axis direction interval of rotatory barrel 100, the in-process in the inner chamber 110 is entered into to the waste residue, the rotatory barrel 100 of driving motor drive rotates, under this condition, a plurality of slag scattering plates 310 that set up along the axis direction interval of rotatory barrel 100 can carry the waste residue discharge gate 430, thereby accomplish the recovery of waste residue, a plurality of slag scattering plates 310 can also be raised the waste residue that enters into inner chamber 110, avoid piling up the caking.

In the embodiment of the present invention, the first end of the rotary cylinder 100 is provided with the opening 120 communicated with the inner cavity 110, the first end of the cylindrical isolation member 200 is connected to the inner wall of the rotary cylinder 100, and the second end of the cylindrical isolation member 200 is flush with the opening 120, as shown in fig. 1, in this case, the cylindrical isolation member 200 isolates the opening 120 into two parts, specifically, a feeding port 420 is formed between the second end of the cylindrical isolation member 200 and the opening 120, and the second end of the cylindrical isolation member 200 is an air outlet 410, so that the feeding port 420 and the air outlet 410 do not interfere with each other, thereby improving the working efficiency.

During the operation of the slag cooler, the waste slag can enter the region between the cylindrical partition 200 and the rotary cylinder 100 through the feed port 420, and the cylindrical partition 200 is provided with a plurality of feed holes 210 at intervals, which are communicated with the inner cavity 110, so that the waste slag can enter the inner cavity 110 through the feed holes 210.

The second end of the rotary cylinder 100 is provided with a discharge hole 430 and an air inlet hole 510 communicating with the inner cavity 110. The air inlet 510 can be communicated with an air compressor, the air compressor can convey air to the inner cavity 110 through the air inlet 510, furthermore, the air is contacted with the waste residue in the inner cavity 110, so that the air can take away heat on the waste residue, the waste residue is cooled, meanwhile, formed hot air is conveyed out through the air outlet 410, and therefore the hot air is recycled.

Correspondingly, rotatory barrel 100 is at the pivoted in-process, and the purpose of raise dust can be played to the sediment board 310 that looses in the inner chamber 110 to make the waste residue in the inner chamber 110 can be fully raised, thereby not only can prevent to produce the waste residue caking in the inner chamber 110, can also make the gas that enters into in the inner chamber 110 can contact with the waste residue betterly, and then can play the better cooling effect to the waste residue, also can retrieve more heats simultaneously.

Further, the slag cooler may further include an air distribution chamber 500 and an air inlet pipe 600, the air inlet pipe 600 may be communicated with the air distribution chamber 500, the air distribution chamber 500 may be disposed at the second end of the rotary drum 100, and the air distribution chamber 500 may be provided with a plurality of air inlet holes 510 distributed at intervals. In operation, an air compressor may be connected to the other end of the air inlet duct 600, and the air compressor may supply air into the air distribution chamber 500 through the air inlet duct 600, and further, the air in the air distribution chamber 500 may be discharged into the inner chamber 110 through the plurality of air inlet holes 510.

Compare in the air compressor machine and communicate with inner chamber 110 through an fresh air inlet 510, under the condition that the cold sediment ware includes air distribution chamber 500 and air-supply line 600, air distribution chamber 500 can be seted up a plurality of fresh air inlet 510 of interval distribution to make gas flow into inner chamber 110 through a plurality of fresh air inlet 510 comparatively evenly, so that the gas that flows into in inner chamber 110 can expand and scatter, and then be convenient for gas and more waste residue contact, finally make the waste residue realize better cooling effect, and can retrieve more heats.

Certainly, the structure of the air inlet pipe 600 can be an L-shaped structure, and the air inlet pipe 600 with the structure can save space, so that the structure of the slag cooler is compact, and meanwhile, the air inlet pipe 600 with the structure is convenient for connecting an air compressor.

Further, in an alternative scheme, the slag cooler can further comprise a blast cap 520, and the blast cap 520 can be arranged on one side of the air inlet holes 510 facing the slag dispersing plate 310. The hood 520 can prevent the waste residue from entering the air distribution chamber 500, and simultaneously, the air enters the inner cavity 110 through the hood 520, and due to the blocking of at least part of the hood 520, the air can be diffused to each position of the inner cavity 110, so that the air outlet effect of the air distribution chamber 500 is better, and the better cooling effect can be realized on the waste residue.

The slag cooler may further include a hole plate 700, the air distribution chamber 500 may be connected to an inner wall of the rotary drum 100 through the hole plate 700, the hole plate 700 may be provided with a plurality of discharge holes 710 distributed at intervals, and the waste slag in the inner cavity 110 may be discharged through the plurality of discharge holes 710. In this case, the orifice plate 700 not only plays a role of connecting the air distribution chamber 500, but also enables the waste residue to stay in the inner cavity 110 for a longer time due to the blocking of the orifice plate 700, so that the waste residue in the inner cavity 110 can be cooled for a longer time, and further more heat can be recovered.

In the embodiment of the present invention, the diameter of the cylindrical partition 200 may gradually increase in a direction approaching the slag dispersing plate 310. Under this condition, when the waste residue flows into the region between tube-shape isolator 200 and the rotatory barrel 100, tube-shape isolator 200 of above-mentioned structure makes the waste residue can expand and scatter, and simultaneously, at rotatory barrel 100 pivoted in-process, tube-shape isolator 200 of above-mentioned structure can make the diffusion effect of waste residue better, when the waste residue enters into inner chamber 110, the waste residue can spread each position in inner chamber 110, thereby not only can prevent to produce the waste residue caking in the inner chamber 110 of rotatory barrel 100 better, still make the waste residue can contact with the air of inflow better, and then be convenient for cool down the waste residue better.

Optionally, the diameter of the cylindrical spacer 200 can be exponentially increased along the direction close to the slag dispersing plate 310, and the cylindrical spacer 200 with such a structure can play a better buffering role on the waste slag, so that the diffusion effect of the waste slag on the cylindrical spacer 200 is better, and finally the diffusion effect of the waste slag entering the inner cavity 110 is better.

Further, the slag cooler may further include an annular dam 900, the annular dam 900 may be connected to an inner wall of the rotary cylinder 100, and the annular dam 900 may be located at a side of the cylindrical partition 200 facing the inner cavity 110. Under this kind of condition, most waste residue that flows in can short time stop on annular baffle plate 900, furtherly, under rotatory barrel 100 pivoted condition, waste residue on the annular baffle plate 900 can spread each position of inner chamber 110 owing to the effect of centrifugal force, so that the diffusion effect of waste residue is better, thereby can prevent to produce the waste residue caking in the inner chamber 110 of rotatory barrel 100 better, simultaneously, still make waste residue and the air of inflow can contact better, and then can cool down the waste residue better.

In the embodiment of the present invention, the slag dispersing plate 310 may be provided with a plurality of cooling air holes distributed at intervals. The cooling air hole can prevent that the waste residue in the inner chamber 110 from producing turbulent phenomenon to make the waste residue in the inner chamber 110 can expand and scatter betterly, under this kind of circumstances, not only better to the cooling effect of waste residue, can also prevent to produce the waste residue caking better in the inner chamber 110.

In the slag cooler disclosed in the embodiment of the present invention, the slag dispersing device 300 may further include a heat exchange tube 320, the heat exchange tube 320 may be disposed in the inner cavity 110, and the slag dispersing plates 310 may be disposed at intervals in the heat exchange tube 320. The heat exchange tube 320 can provide an installation position for the slag dispersing plate 310, and meanwhile, the heat exchange tube 320 is a hollow tube, so that the heat exchange tube 320 can exchange heat with air in the heat exchange tube 320, the heat dissipation effect of the heat exchange tube 320 is better, and the slag dispersing plate 310 in contact with the heat exchange tube 320 can be cooled more quickly.

Further, since the air in the heat exchange pipe 320 exchanges heat with the heat exchange pipe 320, so that the cold air in the heat exchange pipe 320 becomes hot air, in an alternative scheme, one end of the heat exchange pipe 320 may be communicated with the air inlet 510, and the other end of the heat exchange pipe 320 may be communicated with the air outlet 410. In this case, the cool air can be supplied into the heat exchange tube 320 through the air inlet 510, the cool air supplied into the heat exchange tube 320 and the hot air in the heat exchange tube 320 realize gas exchange, and further, the hot air in the heat exchange tube 320 is discharged through the air outlet 410, so that the cooling effect of the heat exchange tube 320 can be improved.

In the embodiment disclosed by the invention, the slag cooler can further comprise a water cooling device, so that the slag cooler can cool the waste slag and recover heat energy by a wind-water combined cooling method, and the waste heat recovery efficiency of the slag cooler is improved. Specifically, the water cooling device may include a first main pipe 810, a second main pipe 820 and a plurality of branch pipes 830, the first main pipe 810 may be disposed at a first end of the rotary drum 100, the first main pipe 810 has a cold water inlet, the second main pipe 820 may be disposed at a second end of the rotary drum 100, the second main pipe 820 has a hot water outlet, the plurality of branch pipes 830 may be disposed at intervals in the rotary drum 100, one end of the branch pipe 830 may be communicated with the first main pipe 810, and the other end of the branch pipe 830 may be communicated with the second main pipe 820.

In a specific operation process, firstly, cold water can be input into the first main pipe 810 through the cold water inlet, further, the cold water flows into the plurality of branch pipes 830 through the first main pipe 810, and as the plurality of branch pipes 830 are arranged in the rotary drum 100 at intervals, heat in the inner cavity 110 of the rotary drum 100 can be introduced into the plurality of branch pipes 830, so that the cold water in the branch pipes 830 is heated, and then the hot water flows into the second main pipe 820 and further flows out through the hot water outlet on the second main pipe 820 for recycling. Therefore, the cooling effect of the waste residue can be improved, and the heat generated by the waste residue can be better recovered.

Of course, the slag cooler may further include a cooling fan, the cooling fan may be disposed on the rotary drum 100, and the cooling fan may face the discharge port 430. The cooling fan can cool down the slag flowing out of the discharge hole 430 again so that the temperature of the finally recovered slag can be minimized.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A slag cooler, characterized by comprising a rotating cylinder (100), a cylindrical partition (200) and a slag spreader (300), wherein:

the rotary cylinder body (100) is provided with an inner cavity (110), the slag dispersing device (300) comprises a plurality of slag dispersing plates (310), the slag dispersing plates (310) are arranged in the inner cavity (110), the slag dispersing plates (310) are arranged at intervals along the axial direction of the rotary cylinder body (100), and an opening (120) communicated with the inner cavity (110) is formed in the first end of the rotary cylinder body (100);

the first end of tube-shape separator (200) with the inner wall of rotatory barrel (100) links to each other, the second end of tube-shape separator (200) with opening (120) parallel and level, just the second end of tube-shape separator (200) is air outlet (410), the second end of tube-shape separator (200) with form feed inlet (420) between opening (120), tube-shape separator (200) spaced apart be equipped with a plurality of with feed port (210) of inner chamber (110) intercommunication, the second end of rotatory barrel (100) be provided with discharge gate (430) and fresh air inlet (510) of inner chamber (110) intercommunication.

2. The slag cooler according to claim 1, further comprising an air distribution chamber (500) and an air inlet pipe (600), wherein the air inlet pipe (600) is communicated with the air distribution chamber (500), the air distribution chamber (500) is disposed at the second end of the rotary cylinder (100), and the air distribution chamber (500) is provided with a plurality of air inlet holes (510) distributed at intervals.

3. The slag cooler according to claim 2, further comprising a blast cap (520), wherein the blast cap (520) is disposed on a side of the air inlet hole (510) facing the slag dispersing plate (310).

4. The slag cooler according to claim 2, further comprising a pore plate (700), wherein the air distribution chamber (500) is connected to the inner wall of the rotary cylinder (100) through the pore plate (700), and the pore plate (700) is provided with a plurality of discharge holes (710) distributed at intervals.

5. A slag cooler according to claim 1, characterized in that the diameter of the cylindrical partition (200) increases gradually in the direction of approaching the slag dispersing plate (310).

6. The slag cooler according to claim 5, characterized in that the slag cooler further comprises an annular baffle plate (900), the annular baffle plate (900) is connected with the inner wall of the rotary cylinder (100), and the annular baffle plate (900) is arranged on one side of the cylindrical partition (200) facing the inner cavity (110).

7. The slag cooler according to claim 1, wherein the slag dispersing plate (310) is provided with a plurality of cooling air holes distributed at intervals.

8. The slag cooler according to claim 1, characterized in that the slag spreader (300) further comprises a heat exchange tube (320), the heat exchange tube (320) is arranged in the inner cavity (110), and the slag spreading plate (310) is arranged at intervals in the heat exchange tube (320).

9. The slag cooler according to claim 8, wherein one end of the heat exchange tube (320) is communicated with the air inlet hole (510), and the other end of the heat exchange tube (320) is communicated with the air outlet (410).

10. The slag cooler according to claim 1, characterized in that the slag cooler further comprises a water cooling device, the water cooling device comprises a first main pipe (810), a second main pipe (820) and a plurality of branch pipes (830), the first main pipe (810) is arranged at the first end of the rotary cylinder (100), the first main pipe (810) is provided with a cold water inlet, the second main pipe (820) is arranged at the second end of the rotary cylinder (100), the second main pipe (820) is provided with a hot water outlet, the plurality of branch pipes (830) are arranged at intervals in the rotary cylinder (100), one end of each branch pipe (830) is communicated with the first main pipe (810), and the other end of each branch pipe (830) is communicated with the second main pipe (820).

11. The slag cooler according to claim 1, further comprising a cooling fan disposed on the rotary cylinder (100) and facing the discharge port (430).