CN220062306U

CN220062306U - Slag cooling device

Info

Publication number: CN220062306U
Application number: CN202321473364.2U
Authority: CN
Inventors: 祖静茹; 李克忠; 刘元杰
Original assignee: ENN Science and Technology Development Co Ltd
Current assignee: ENN Science and Technology Development Co Ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-11-21
Anticipated expiration: 2033-06-09

Abstract

The disclosure relates to the technical field of slag cooling, and provides a slag cooling device. The slag cooling device comprises a tank body, wherein a slag inlet is formed in the top of the tank body, a slag outlet is formed in the bottom of the tank body, a cooling water spray head and a slag cooling piece are arranged in the tank body, the slag cooling piece is arranged below the slag inlet, and the cooling water spray head is used for spraying cooling water to slag falling to the slag cooling piece from the slag inlet, so that primary cooling of the slag is realized. The inside of the cold slag piece is provided with a cavity for introducing cooling gas, and one side of the cold slag piece facing the slag inlet is provided with a plurality of exhaust holes, so that the cooling gas discharged from the exhaust holes flows to slag falling from the slag inlet, and the slag is cooled secondarily. The slag is received through the cold slag piece, the time that the slag is cooled by cooling water and cooling gas is longer, the cooling effect is more sufficient, and the utilization efficiency of the cooling gas and the cooling water is higher. Through twice cooling, the water consumption is less when realizing the cooling effect, and slag and cooling water need not secondary separation treatment, have reduced the cost.

Description

Slag cooling device

Technical Field

The disclosure relates to the technical field of slag cooling, in particular to a slag cooling device.

Background

In recent years, the pulverized coal pressurized fluidized bed coal gasification technology is widely popularized in China, carbonaceous materials are gasified at high temperature in a gasification furnace to form slag, and the high-temperature slag can be discharged after being cooled to reach the equipment tolerance temperature. Slag cooling devices and related equipment for slag removal in coal gasification processes play an important role as key equipment components in gasification processes.

From the running report of various coal gasification technologies which are mature at present, a water chilling process is generally adopted in the slag cooling device, namely, excessive water is introduced into the slag cooling device, so that high-temperature slag falls into the water to form a large amount of slag water, and then the slag water is discharged out of the slag cooling device through a pipeline. The water cooling process consumes a large amount of water to cause higher operation cost, and on the other hand, the formed large amount of slag water treatment and water-slag separation operation cost is high, and the equipment damage maintenance rate is high, so that the slag water operation economy is greatly reduced.

Disclosure of Invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a slag cooling device.

The utility model provides a cold sediment device, which comprises a tank body, the top of the jar body is provided with the slag entry, the bottom of the jar body is provided with the slag export, be provided with cooling water shower nozzle and cold sediment spare in the jar body, the cold sediment spare sets up the below of slag entry, the inside of cold sediment spare is equipped with the cavity that is used for letting in cooling gas, cold sediment spare orientation one side of slag entry is equipped with a plurality of exhaust holes, so that by exhaust hole exhaust cooling gas flow direction by the slag of slag entry whereabouts, the cooling water shower nozzle is used for to by the slag whereabouts of slag entry extremely the slag of cold sediment spare sprays the cooling water.

Optionally, the cooling water spray head is located below the slag inlet, and the cooling water spray head is used for spraying cooling water downwards.

Optionally, the slag cooling piece is plate-shaped, and one side plate surface of the slag cooling piece faces upwards.

Optionally, the cooling water spray head is located obliquely below the slag inlet, the slag cooling piece is inclined downwards, and the top surface of the slag cooling piece faces the cooling water spray head.

Optionally, a distance between the side edge of the cooling water spray head near the slag inlet and the side edge of the slag inlet near the cooling water spray head in the horizontal direction is between 1 mm and 50 mm.

Optionally, a slag receiving portion is arranged on one side of the tank body, which is close to the cooling water spray head, the slag receiving portion is of an inclined surface structure facing the slag inlet, and the slag receiving portion is located below the bottom side edge of the slag cooling piece.

Optionally, the slag receiving part is provided with a low-temperature steam device, and the low-temperature steam device is used for spraying low-temperature steam into the tank body.

Optionally, the slag cooling device further comprises an inert gas pipeline and an online monitoring system, the cooling water nozzle is communicated with a cooling water pipeline, the online monitoring system is used for monitoring water flow in the cooling water pipeline, an outlet of the inert gas pipeline is communicated with the cooling water pipeline, a valve is arranged at the outlet of the inert gas pipeline, and the valve is opened and closed according to signals sent by the online monitoring system.

Optionally, the slag cooling device further comprises a plurality of inert gas protection pipes, and outlet ends of the inert gas protection pipes are distributed at intervals along the circumferential direction of the cooling water spray head.

Optionally, the outlet end of the inert gas protection tube is provided with an amplifying part, and the amplifying part is of an arc-shaped structure extending along the circumferential direction of the cooling water spray head.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

the utility model provides a cold sediment device, the top of the jar body is provided with the slag entry, is provided with cooling water shower nozzle and cold sediment spare in the jar body, and cooling water shower nozzle sprays cooling water to the slag that falls to cold sediment spare by the slag entry to the realization is once cooled down the slag. Through setting up the cavity in the inside of cold sediment spare, and cold sediment spare is equipped with a plurality of exhaust holes towards one side of slag entry, after letting in cooling gas in the cavity, cooling gas can flow to by the exhaust hole to by the slag on the cold sediment spare of slag entry whereabouts to carry out the secondary cooling to the slag, the cooling effect is more abundant. Through setting up cold sediment spare and accept the slag, the slag receives cooling water and cooling gas cooling's time longer, and the cooling effect is more abundant, and is higher to cooling gas and cooling water's utilization efficiency. Through the two times of cooling, less water is used when the cooling effect is realized, secondary separation treatment is not needed for slag and cooling water, and the cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a cross-sectional view of a tank of a slag cooler according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of another tank of the slag cooler according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a slag cooling device according to an embodiment of the present disclosure;

FIG. 4 is a bottom view of a cooling water spray head and a high pressure inert gas shield tube according to an embodiment of the present disclosure;

fig. 5 is a bottom view of a cooling water spray head and an enlarged portion according to an embodiment of the present disclosure.

Wherein, 1, the tank body; 2. a cooling water spray head; 3. a slag cooling piece; 4. a slag inlet; 5. a slag receiving part; 6. a cooling water line; 7. an inert gas line; 8. an inert gas protection tube; 9. an amplifying section.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The slag cooling device is described in detail by specific examples below:

the embodiment of the disclosure provides a slag cooling device, which comprises a tank body 1, wherein a slag inlet 4 is formed in the top of the tank body 1, a slag outlet is formed in the bottom of the tank body 1, a cooling water spray head 2 and a slag cooling piece 3 are arranged in the tank body 1, and the slag cooling piece 3 is arranged below the slag inlet 4, that is, the slag cooling piece 3 can be located under the slag inlet 4 or obliquely below the slag inlet 4. The inside of the slag cooling member 3 is provided with a cavity for introducing cooling gas, and a side of the slag cooling member 3 facing the slag inlet 4 is provided with a plurality of exhaust holes so that the cooling gas discharged from the exhaust holes flows to slag falling from the slag inlet 4, and the cooling water spray head 2 is used for spraying cooling water to slag falling from the slag inlet 4 to the slag cooling member 3.

The slag cooling device provided by the embodiment of the disclosure sprays cooling water to slag falling from the slag inlet 4 to the slag cooling piece 3 through the cooling water spray head 2, so that primary cooling of the slag is realized. After the cooling gas is introduced into the cavity, the cooling gas can flow from the exhaust hole to the slag falling onto the slag cooling part 3 from the slag inlet 4, and the slag is cooled secondarily, so that the cooling effect is more sufficient. By arranging the slag cooling piece 3 to receive slag, the time that the slag is cooled by cooling water and cooling gas is longer, the cooling effect is more sufficient, and the utilization efficiency of the cooling gas and the cooling water is higher. Through the two times of cooling, less water is used when the cooling effect is realized, secondary separation treatment is not needed for slag and cooling water, and the cost is reduced.

In the above embodiment, the high-temperature slag falls into the tank body through the slag inlet 4 arranged at the top of the tank body 1, specifically, the slag discharging pipe of the gasification furnace extends into the tank body 1 from the upper part of the tank body 1, the outlet of the slag discharging pipe is the slag inlet 4, the slag inlet 4 is positioned at the top of the tank body 1, the slag can be sufficiently cooled in the falling process, the outlet of the slag discharging pipe is provided with the control valve, the slag discharging flap valve can be used for controlling the flow of the slag entering the tank body 1, and excessive and insufficient cooling of the slag entering the tank body 1 in a certain time is avoided. The cooling water spray head 2 arranged in the tank body 1 sprays cooling water to slag for primary cooling, and the slag cooled by the cooling water falls onto the slag cooling piece 3, so that the damage to the slag cooling piece 3 caused by overhigh temperature of the slag can be avoided. On the one hand, the cooling gas is in contact with the slag after primary cooling and subjected to secondary cooling, and the temperature of the slag is further reduced after the secondary cooling of the slag cooling piece. On the other hand, the cooling gas can blow off the high-temperature slag falling to the slag cooling piece 3, so that the cooling effect of the slag is better due to the fact that the contact area of the slag, cooling water and cooling gas is increased while the slag falls from the slag cooling piece 3 conveniently. The slag is secondarily cooled by the cooling gas, the cooling gas can be low-temperature steam, the temperature of the low-temperature steam is lower than that of the slag, the preparation is convenient, the cooling gas cannot react with high-temperature slag, and the cooled slag does not need to be treated. By adjusting the pressure of the cooling water and the temperature of the introduced cooling gas, the high-temperature slag can be selectively cooled to a proper temperature. The slag after secondary cooling falls into the slag layer at the bottom of the tank body 1, and is intermittently discharged out of the slag cooling device through a control valve arranged at the bottom of the slag cooling device.

In some embodiments, as shown in fig. 1, the cooling water spray head 2 is located below the slag inlet 4, and the cooling water spray head 2 is used to spray cooling water downward. The water sprayed from the cooling water spray head 2 is scattered, and is in cross contact with slag falling around the cooling water spray head, and the cooling water spray head 2 is not easily blocked. The cold slag piece 3 is located the below of cooling water shower nozzle 2, and the cooling water is cooled down the slag by the top, and cold slag piece 3 is cooled down the slag that falls on cold slag piece 3 by the below to the cooling gas that the exhaust hole loss was gone out, cools down the slag through two opposite directions, and is better to the cooling effect of slag.

In some embodiments, as shown in fig. 1 and 2, the slag cooling member 3 is plate-shaped, and one side surface of the slag cooling member 3 faces upwards, that is, one side surface receives slag falling from the slag inlet 4, and an exhaust hole is formed in the one side surface, so that steam in the slag cooling member 3 escapes upwards to cool the slag on the slag cooling member 3. The exhaust holes on the slag cooling piece 3 are uniformly distributed, so that the temperature of slag is reduced more uniformly. The slag cooling piece 3 is plate-shaped, and under a certain volume, the contact area of the slag cooling piece 3 and slag is larger, the thickness is smaller, and the utilization efficiency of cooling gas introduced into the cavity is higher. The slag cooling part 3 can be horizontally arranged or can form a certain included angle with the horizontal direction, and can be specifically determined according to the position of the cooling water spray head 2.

Further, as shown in fig. 2, the cooling water spray head 2 is positioned obliquely below the slag inlet 4, so that hot corrosion of the cooling water spray head 2 and the slag cooling member 3 by high-temperature slag is avoided. Correspondingly, the cold slag piece 3 inclines downwards, the top surface of the cold slag piece 3 faces the cooling water spray head 2, an included angle between the top surface of the cold slag piece 3 and the vertical direction is between 30 degrees and 45 degrees, so that cooling water sprayed by the cooling water spray head 2 and cooling gas dissipated by the cold slag piece 3 form a sprayed cooling mode, slag is cooled in two directions, and the cooling effect on the slag is better. The cooling water spray head 2 sprays cooling water to the slag in the whereabouts, changes the slag falling direction, makes the motion trail of slag become from vertical decurrent to the motion of orientation oblique below to cold sediment spare 3, rolls by cold sediment spare 3 again for the slag falling trail is the broken line form, and the motion stroke increases, makes cooling time obtain furthest's extension, makes the slag cooling more thoroughly.

In some embodiments, the distance in the horizontal direction between the side edge of the cooling water spray head 2 near the slag inlet 4 and the side edge of the slag inlet 4 near the cooling water spray head 2 is between 1 and 50 millimeters. The minimum distance between the cooling water spray head 2 and the slag inlet 4 in the horizontal direction is 1 mm, so that hot corrosion of high-temperature slag to the cooling water spray head 2 is avoided, the maximum distance between the cooling water spray head 2 and the slag inlet 4 in the horizontal direction is 50 mm, and the condition that cooling water cannot be sprayed to all slag is avoided. The distance between the cooling water spray head 2 and the slag inlet 4 in the vertical direction is not limited.

In some embodiments, as shown in fig. 2, a slag receiving portion 5 is disposed on a side of the tank 1 near the cooling water spray head 2, the slag receiving portion 5 is in a slope structure facing the slag inlet 4, and the slag receiving portion 5 is located below a bottom edge of the slag cooling member 3, so that slag sliding from the slag cooling member 3 can slide down to the bottom of the tank 1 along the slag receiving portion 5. Through cold sediment spare 3, more towards cold sediment spare 3 oblique direction roll-off slag, through setting up and connect sediment portion 5, avoid at the inhomogeneous of jar 1 bottom slag distribution, influence the discharge of slag. The lower end of the slag receiving part 5 is positioned at the slag outlet, so that the slag is conveniently discharged.

Further, connect sediment portion 5 department to be equipped with low temperature steam device, low temperature steam device is used for spouting low temperature steam to jar body 1 in, and low temperature steam device includes communicating pipe, and the one end of communicating pipe is located jar body 1, and the other end is used for letting in low temperature steam, in the mill, and low temperature steam source is extensive, and is convenient easily obtained. By providing the low-temperature steam device, on the one hand, the slag deposited on the slag receiving part 5 is cooled, and on the other hand, the slag deposited on the slag receiving part 5 is loosened, so that the deposited slag moves to the bottom of the tank body 1 along the slag receiving part 5, and the slag outlet discharges the slag cooling device. A plurality of low-temperature steam devices are arranged along the inclined direction of the slag receiving part 5, so that the cooling effect on slag piled on the slag receiving part 5 is guaranteed.

In some embodiments, as shown in fig. 3, the slag cooling device further includes an inert gas pipeline 7 and an on-line monitoring system, the cooling water spray head 2 is communicated with the cooling water pipeline 6, the on-line monitoring system is used for monitoring water flow in the cooling water pipeline 6, an outlet of the inert gas pipeline 7 is communicated with the cooling water pipeline 6, a valve is arranged at an outlet of the inert gas pipeline 7, and the valve is opened and closed according to a signal sent by the on-line monitoring system. The signal sent by the on-line monitoring system is a pulse signal. Through the on-line monitoring system, after detecting that cooling water shower nozzle 2 discharge is less than 10% of normal flow, send pulse signal to interlocking sequential control system, interlocking sequential control system is according to the valve opening of pulse signal control inert gas pipeline 7 for inert gas gets into in the cooling water pipeline 6, and the pressure of the interior gaseous of inert gas pipeline 7 is 2 to 5 times of the interior water pressure of cooling water pipeline 6, and the introduction of inert gas can assist dredging cooling water pipeline 6, gets rid of the impurity of jam cooling water shower nozzle 2, solves the jam of cooling water shower nozzle 2.

In some embodiments, as shown in fig. 4, the slag cooling device further includes a plurality of inert gas protection pipes 8, and outlet ends of the plurality of inert gas protection pipes 8 are spaced apart along the circumference of the cooling water spray head 2. When the cooling water spray head 2 sprays cooling water, the inert gas is sprayed out from the inert gas protection pipe 8 arranged outside the cooling water spray head 2, and an annular protection air layer is formed outside the cooling water spray head 2, so that small-particle solid slag is prevented from entering the vicinity of the cooling water spray head 2, and the probability of blockage of the cooling water spray head 2 is further reduced.

Further, as shown in fig. 5, the outlet end of the inert gas protection tube 8 has an enlarged portion 9, and the enlarged portion 9 has an arc-shaped structure extending along the circumferential direction of the cooling water spray head 2. Through setting up the portion of amplifying 9, enlarged the scope that inert gas that every inert gas protection pipe 8 jetted out can cover in cooling water shower nozzle 2 circumference, strengthened the continuity of protection gas layer, the quantity of the inert gas protection pipe 8 that reaches the protection effect is less, can effectually reduce inert gas's the volume of letting in, has further reduced the jam probability of cooling water shower nozzle 2 simultaneously. The amplifying part 9 is spaced from the cooling water nozzle 2 by a certain distance in the radial direction of the cooling water nozzle 2, and is arranged in a dislocation manner with each water outlet of the cooling water nozzle 2.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a cold sediment device, its characterized in that, includes a jar body (1), the top of jar body (1) is provided with slag entry (4), the bottom of jar body (1) is provided with the slag export, be provided with cooling water shower nozzle (2) and cold sediment spare (3) in jar body (1), cold sediment spare (3) set up the below of slag entry (4), the inside of cold sediment spare (3) is equipped with the cavity that is used for letting in cooling gas, cold sediment spare (3) orientation one side of slag entry (4) is equipped with a plurality of exhaust holes, so that by exhaust hole exhaust cooling gas flow by slag that slag entry (4) whereabouts, cooling water shower nozzle (2) are used for to by slag entry (4) whereabouts to cold sediment of sediment spare (3) sprays cooling water.

2. The slag cooling device according to claim 1, characterized in that the cooling water spray head (2) is located below the slag inlet (4), the cooling water spray head (2) being adapted to spray cooling water downwards.

3. The slag cooler as set forth in claim 1, characterized in that the slag cooling member (3) is plate-like, with one side of the slag cooling member (3) facing upward.

4. A slag cooler according to claim 3, characterized in that the cooling water spray head (2) is located obliquely below the slag inlet (4), the slag cooling member (3) being inclined downwards, the top surface of the slag cooling member (3) being directed towards the cooling water spray head (2).

5. The slag cooling device according to claim 4, characterized in that the distance in the horizontal direction between the side edge of the cooling water spray head (2) near the slag inlet (4) and the side edge of the slag inlet (4) near the cooling water spray head (2) is between 1 and 50 mm.

6. The slag cooling device according to claim 4, wherein a slag receiving portion (5) is arranged on one side of the tank body (1) close to the cooling water spray head (2), the slag receiving portion (5) is of an inclined surface structure facing the slag inlet (4), and the slag receiving portion (5) is located below the bottom side edge of the slag cooling piece (3).

7. The slag cooling device according to claim 6, characterized in that the slag receiving part (5) is provided with a low-temperature steam device for spraying low-temperature steam into the tank (1).

8. The slag cooling device according to claim 1, further comprising an inert gas pipeline (7) and an on-line monitoring system, wherein the cooling water spray head (2) is communicated with a cooling water pipeline (6), the on-line monitoring system is used for monitoring water flow in the cooling water pipeline (6), an outlet of the inert gas pipeline (7) is communicated with the cooling water pipeline (6), a valve is arranged at an outlet of the inert gas pipeline (7), and the valve is opened and closed according to signals sent by the on-line monitoring system.

9. The slag cooling device according to claim 1, further comprising a plurality of inert gas protection pipes (8), wherein outlet ends of the plurality of inert gas protection pipes (8) are distributed at intervals along the circumferential direction of the cooling water spray head (2).

10. The slag cooling device according to claim 9, characterized in that the outlet end of the inert gas protection tube (8) is provided with an amplifying part (9), and the amplifying part (9) is of an arc-shaped structure extending along the circumferential direction of the cooling water spray head (2).