CN216764800U - Movable arranges sediment distributing plate and fluidized bed on line - Google Patents

Abstract

The utility model provides a movable on-line slag-discharging distribution plate and a fluidized bed. The distribution plate includes: a fixed distribution plate and a movable distribution plate; the movable distribution plate is arranged on the fixed distribution plate and is connected with the fixed distribution plate in a mode of moving up and down along the axial direction of the fixed distribution plate. The movable distribution plate is connected with the fixed distribution plate in a mode of moving up and down along the axial direction of the fixed distribution plate, and when discharge is not needed, introduced fluidizing gas flows upwards from the distribution holes to the top of the fluidized bed; when discharging is needed, a gap is formed between the bottom wall of the movable distribution plate and the fixed distribution plate, fine semicoke particles are fluidized to move upwards, and coarse semicoke particles are blown down into a central discharge pipe below the fixed distribution plate from the gap between the bottom wall of the movable distribution plate and the fixed distribution plate along the fixed distribution plate gradually, so that slag discharging is realized.

Description

Movable arranges sediment distributing plate and fluidized bed on line

Technical Field

The utility model relates to the technical field of distribution plates, in particular to a movable online slag discharge distribution plate and a fluidized bed.

Background

The pulverized coal gasification technology is an efficient pulverized coal grading and quality-grading utilization technology, low-rank coal which is rich in reserves and wide in distribution can be processed and utilized to generate synthesis gas and high-temperature fly ash, the synthesis gas is subjected to downstream purification treatment to synthesize chemical raw materials such as methanol, and the high-temperature fly ash is generally subjected to dry ash removal design, so that the technology is simple, the wastewater yield can be greatly reduced, and the energy conservation and the environmental protection are realized. The coal hydro-gasification technology is an advanced pulverized coal gasification technology, and is a process for generating synthesis gas rich in methane, aromatic hydrocarbon oil products with high added values and clean semicoke by reacting pulverized coal and hydrogen at the medium temperature of 800-1000 ℃ and the high pressure of 5-10 MPa. Because the volatile components are cracked and gasified to generate the methane and aromatic hydrocarbon oil products, the unreacted carbon is changed into semicoke, the yield of the semicoke is about 50 percent, and the bulk density of the high-temperature semicoke after the reaction is low, namely only 150-200 Kg/m³The heat transfer coefficient is low, the yield is large, and the high-temperature semicoke is cooled by a high-pressure fluidized bed in a dry method.

In the operation of industrial production, the pulverized coal with high partial caking property can generate semicoke cohesiveness after reaction to form massive particles which exceed the particle size of normal semicoke by several times or dozens of times, the fluidized gas at the bottom of the fluidized bed can not fluidize the semicoke, the massive semicoke can be accumulated at the bottom distribution plate of the fluidized bed to cause uneven fluidization of the distribution plate, the phenomena of bias flow, channeling and the like occur in the fluidized bed, the semicoke can not be effectively cooled, and the risk of the overtemperature of the outlet of the fluidized bed can be caused. Because in the cooling process, partial steam and oil probably adsorb again and get into the semicoke pore, along with the increase of adsorption capacity, the semicoke particle diameter also can grow gradually to form hard globular or cubic gradually, the fluidization effect of distribution plate also can worsen, can produce the problem of fluidized bed export overtemperature in the same time, can't ensure the long period operation of technology.

When materials are stacked above a distribution plate of a fluidized bed, two treatment modes are provided conventionally: one is to increase the fluidization air quantity, and the other is to discharge slag from the central pipe to discharge large particles. Because the minimum fluidization speed is in linear relation with the quadratic power of the average particle size of the materials, after the large materials are stacked too much, if the average particle size is increased by 3 times, the minimum fluidization speed is increased by 9 times, the corresponding fluidization air volume is also increased by 9 times, and the fluidization air volume cannot be infinitely increased to meet the requirement that all particles are completely fluidized, so that the distribution plate increases the fluidization air volume and is only suitable for forming smaller coarse semi-coke particles by conglomeration of semi-coke particles.

Among the prior art, designed fluidized bed center tube bottom and arranged the material, discharged the material of caking from the fluidized bed bottom, generally be applicable to the great granule of bulk density, the fluidization gas is used all the time to the center tube, when it can't be with granule suspension, fluidization, the large granule can fall into center tube discharge system. Aiming at the condition that most of generated semicoke is particularly light in bulk density, the using amount of central pipe fluidized air needs to be strictly controlled, if slag is discharged, the fluidized air amount of the central pipe needs to be increased, coarse semicoke particles fall from the central pipe, and a large amount of central fluidized air is added to cause severe rolling and slugging of semicoke in a central area and disturbance of semicoke above a distribution plate; if the amount of the fluidized air introduced into the central tube is small, the large materials and the fine semicoke particles can be accumulated at the central tube, and the result that the central tube cannot be dredged is caused.

In conclusion, for the fluidized bed with extremely low particle bulk density and without on-line coke discharging all the time, the conventional central pipe discharging mode is not easy to control, and the increase of fluidizing air can not ensure that large particles and spherical semicoke overflow from the top of the fluidized bed, which is a great challenge for the long-period operation of the fluidized bed.

Disclosure of Invention

In view of this, the utility model provides a movable online slag-discharging distribution plate and a fluidized bed, and aims to solve the problem that the existing fluidized bed which has a particularly light particle bulk density and does not need to be continuously subjected to online coke discharging is not easy to control in a central tube discharging manner.

In one aspect, the present invention provides a movable online slag discharging distribution plate, including: a fixed distribution plate and a movable distribution plate; the movable distribution plate is arranged on the fixed distribution plate and is connected with the fixed distribution plate in a mode of moving up and down along the axial direction of the fixed distribution plate; when discharging is not needed, the bottom wall of the movable distribution plate is pressed against and contacted with the fixed distribution plate; when discharging is needed, the movable distribution plate moves upwards along the axial direction of the fixed distribution plate, so that a gap is formed between the bottom wall of the movable distribution plate and the fixed distribution plate, fine semicoke particles are fluidized to move upwards, and coarse semicoke particles gradually flow along the fixed distribution plate from the bottom wall of the movable distribution plate and the gap between the fixed distribution plates to be blown down into the central discharge pipe, so that slag discharging is realized.

Further, above-mentioned movable online sediment distribution plate of arranging, movable distribution plate includes: the top spherical distribution plate, the vent pipe and the propeller are arranged on the top of the box body; the top spherical distribution plate is arranged above the vent pipe and used for distributing fluidization gas introduced into the vent pipe so as to fluidize materials and blow coarse and semi-coke particles to the periphery to realize slag discharge; the propeller is arranged on the breather pipe and used for applying driving force to the breather pipe so as to enable the breather pipe to drive the top spherical distribution plate to move along the axial direction of the breather pipe.

Further, above-mentioned movable arranges sediment distributing plate on line, top spherical distributing plate with be connected through connecting the limiting plate between the breather pipe for when not needing to arrange the material support the contact on fixed distributing plate.

Further, above-mentioned movable arranges sediment distributing plate on line, fixed distributing plate includes: a first conical distribution plate and a second conical distribution plate; the first conical distribution plate is arranged above the second conical distribution plate along the periphery of the second conical distribution plate, and an obtuse angle is formed between the first conical distribution plate and the second conical distribution plate.

Further, above-mentioned movable arranges sediment distributing plate on line, second toper distributing plate is equipped with two districts, is the support area respectively and sets up the gas distribution area of support area periphery, it is right when not needing to arrange the material that the support area is used for the portable distributing plate supports, still is used for circulating fluidization gas when needs arrange the material, in order to disturb the cubic, the ball piece semicoke of gas distribution area whereabouts to make it fall into central row of material intraductal.

Further, in the movable online deslagging distribution plate, an included angle between the first conical distribution plate and the first conical distribution plate in the axial direction is 30-45 degrees; the included angle between the first conical distribution plate and the second conical distribution plate is 120-180 degrees.

In another aspect, the utility model further provides a fluidized bed, which is provided with the movable online slag discharge distribution plate.

Furthermore, in the fluidized bed, a central discharge pipe is connected below a fixed distribution plate of the movable online slag discharge distribution plate, a movable distribution plate part of the movable online slag discharge distribution plate is movably arranged in the central discharge pipe, and an annular slag discharge channel is arranged between the movable distribution plate and the central discharge pipe; the central discharge pipe penetrates through the bottom wall of the fluidized bed, and the end part of the central discharge pipe, which is arranged outside the fluidized bed, is connected with an ash hopper collecting tank.

Further, in the fluidized bed, a thermocouple is arranged above the movable online slag discharging distribution plate in the fluidized bed and is used for detecting the temperature above the movable online slag discharging distribution plate; the thermocouple is connected with an alarm and used for receiving the temperature detected by the thermocouple and giving an alarm when the temperature is lower than a preset temperature so as to prompt that the material fluidization state in the fluidized bed is poor and slag needs to be discharged; a high material level detector is arranged at the top of the ash hopper collecting tank, and when the material level of the material collected in the ash hopper collecting tank reaches the position of the high material level detector, the high material level detector is triggered and sends a trigger closing signal to the controller; the controller is connected with the high material level detector and used for receiving the trigger closing signal and driving the movable distribution plate to move downwards so as to be in abutting contact with the fixed distribution plate, so that slag discharge is stopped, and one-time discharge of stacked materials is completed.

Further, in the fluidized bed, a heat exchanger is arranged in the ash hopper collecting tank and is used for cooling the materials collected by the ash hopper collecting tank; the inlet and the outlet of the ash bucket collecting tank are provided with cut-off valves for cutting off the input and the output of the ash bucket collecting tank; and a balance pipe is arranged between the ash hopper collection tank and the fluidized bed and is used for balancing the pressure difference between the ash hopper collection tank and the fluidized bed so as to enable the coarse semicoke particles to fall into the ash hopper collection tank.

The movable online slag-discharging distribution plate is characterized in that a movable distribution plate is arranged on a fixed distribution plate and is connected with the fixed distribution plate in a mode of moving up and down along the axial direction of the fixed distribution plate, so that when material discharge is not needed, the bottom wall of the movable distribution plate is abutted against and contacted with the fixed distribution plate to support the movable distribution plate through the fixed distribution plate, and the fixed distribution plate and the movable distribution plate are used as the distribution plates to cooperatively distribute gas, so that the fluidized gas introduced from the lower parts of the fixed distribution plate and the movable distribution plate flows upwards to the top of a fluidized bed from distribution holes, and complete fluidization of the material can be realized; when discharging is needed, the movable distribution plate moves upwards along the axial direction of the fixed distribution plate, a gap is formed between the bottom wall of the movable distribution plate and the fixed distribution plate, fine semicoke particles are driven to move upwards by fluidization, coarse semicoke particles are gradually blown down into a central discharge pipe below the fixed distribution plate from the gap between the bottom wall of the movable distribution plate and the fixed distribution plate along the fixed distribution plate, deslagging is realized, the deslagging can be realized to achieve a cleaning effect only by adjusting the height of the movable distribution plate without adjusting the fluidization air volume, namely, massive and spherical semicokes above the distribution plate can be cleaned on line at high pressure, the device is suitable for a particularly light-density intermittent discharging process, and a stable fluidization effect of the distribution plate in a long period can be maintained; meanwhile, the falling of blocky and spherical semicoke can be met by controlling the movement of the movable distribution plate, namely the opening time and the stroke are controllable, and the problem that the fluidization effect is not easy to control because the fluidization gas is directly introduced into the conventional central pipe is solved. This movable arranges sediment distributing plate and fluidized bed on line can realize arranging the sediment as required of high-pressure fluidized bed, easy operation, easily control, the fluidized bed of the harsh operating mode such as the low and high temperature high pressure of sediment volume of specially adapted row, simultaneously, adopts this distributing plate, with greatly reduced operating personnel's intensity of labour, the stability of reinforcing technology, can ensure the continuous steady operation of distributing plate, reduces the parking frequency that the distributing plate leads to unusually, can bring huge economic benefits for the enterprise.

Furthermore, the movable online slag discharge distribution plate is provided with four fluidization subareas, so that agglomeration and concentration of spherical semicoke to the central pipe can be realized, the fluidization air amount does not need to be adjusted during discharge, the whole fluidization area of the fluidized bed is stable, and materials can smoothly fall under the action of fluidization air and the slope of the distribution plate; the ash bucket collecting tank has high material level detector, can feed back the material accumulation state in the ash bucket collecting tank, makes things convenient for operating personnel to control the row burnt of ash bucket collecting tank, prevents that the material backlog in the ash bucket collecting tank from resulting in the unable discharge of material.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a top view of a movable distribution plate for online slag discharge provided in an embodiment of the present invention;

FIG. 2 is a side view of a movable distribution plate for online slag discharge provided in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a fluidized bed provided in an embodiment of the present invention;

FIG. 4 is a schematic flow chart of the cooling of the semicoke in the fluidized bed according to the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, a schematic structural diagram of a fluidized bed provided by an embodiment of the present invention is shown. As shown in the figure, a movable online slag-discharging distribution plate 2 is arranged at the bottom of the fluidized bed 1, and the movable online slag-discharging distribution plate 2 is connected with a central discharging pipe 3 for discharging slag, i.e. coarse semicoke particles, such as block-shaped and spherical semicoke, in the fluidized bed 1; in the present embodiment, the central discharge pipe 3 is disposed through the bottom wall of the fluidized bed 1, and an end portion (bottom end as shown in fig. 1) of the central discharge pipe 3 disposed outside the fluidized bed 1 is connected to the ash hopper collecting tank 4 for receiving the discharged slag, that is, the ash hopper collecting tank 4 is communicated with the fluidized bed 1 through the central discharge pipe 3, and the slag is discharged into the ash hopper collecting tank 4 through the central discharge pipe 3; to facilitate the discharge of the slag, a balancing pipe 5 is preferably provided between the hopper collection tank 4 and the top of the fluidized bed 1 for balancing a pressure difference therebetween to allow the coarse semicoke particles to fall down into the hopper collection tank 4.

With continued reference to fig. 1-3, the movable online slag tapping distribution plate 2 comprises: a fixed distribution plate 21 and a movable distribution plate 22; wherein, the movable distribution plate 22 is disposed on the fixed distribution plate 21, and the movable distribution plate 22 is connected to the fixed distribution plate 21 in a manner of being capable of moving up and down along an axial direction (a vertical direction shown in fig. 1) of the fixed distribution plate 21; when discharging is not needed, the bottom wall of the movable distribution plate 22 is pressed against and contacted with the fixed distribution plate 21; when discharging is needed, the movable distribution plate 22 moves upward (relative to the position shown in fig. 1) along the axial direction of the fixed distribution plate 21, so that a gap is formed between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21, the fine semicoke particles are driven to move upward by fluidization, and the coarse semicoke particles are gradually blown down into the central discharging pipe 3 below the fixed distribution plate 21 along the fixed distribution plate 21 from the gap between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21, so that slag discharging is achieved.

Specifically, the fixed distribution plate 21 may be a tapered distribution plate structure to avoid the accumulation of the material; the outer peripheral wall of the fixed distribution plate 21 is connected with the inner wall of the fluidized bed 1 so as to be fixed on the inner wall of the fluidized bed 1; the inner peripheral wall of the fixed distribution plate 21 is connected with the top end of the central discharge pipe 3 and is used for discharging coarse semi-coke particles, namely the central discharge pipe 3 is connected below the fixed distribution plate 21. The movable distribution plate 22 may be disposed on the fixed distribution plate 21, the movable distribution plate 22 is partially movably disposed in the central discharge pipe 3, and an annular slag discharge channel 23 is provided between the movable distribution plate 22 and the central discharge pipe 3 to discharge coarse semicoke particles. The movable distribution plate 22 can cooperate with the fixed distribution plate 21 to distribute gas, and the fixed distribution plate 21 also supports the movable distribution plate 22. Wherein, the fixed distribution plate 21 and the movable distribution plate 22 are both provided with distribution holes (not shown in the figure) so that the fluidizing gas introduced from the lower part of the fixed distribution plate 21 and the movable distribution plate 22 flows upwards to the top of the fluidized bed 1 from the distribution holes; the total stroke of the movable distributing plate 22 may be 200mm, or may be other stroke amounts, which is not limited in this embodiment.

When discharging is not needed, namely, coke discharging is not needed, the bottom wall of the movable distribution plate 22 is abutted against and contacted with the fixed distribution plate 21 so as to support the movable distribution plate 22 through the fixed distribution plate 21, and the fixed distribution plate 21 and the movable distribution plate 22 are used as distribution plates for cooperatively distributing gas, so that the fluidized gas introduced from the lower parts of the fixed distribution plate 21 and the movable distribution plate 22 flows upwards to the top of the fluidized bed 1 from the distribution holes, and complete fluidization of materials can be realized.

When discharging is needed, namely, under the working condition of coke discharging, the movable distribution plate 22 moves upwards (relative to the position shown in fig. 1) along the axial direction of the fixed distribution plate 21, as shown in fig. 1, a gap is formed between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21, so that fine semicoke particles are driven to move upwards by fluidization, and coarse semicoke particles are blown down into the central discharging pipe 3 below the fixed distribution plate 21 from the gap between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21 along the fixed distribution plate 21 gradually, so that slag discharging is realized, and slag discharging can be realized without adjusting the fluidization gas amount.

With continued reference to fig. 1-3, the fixed distribution plate 21 includes: a first conical distribution plate 211 and a second conical distribution plate 212; the first tapered distribution plate 211 is disposed above the second tapered distribution plate 212 along the outer periphery of the second tapered distribution plate 212, and an obtuse angle is formed between the first tapered distribution plate 211 and the second tapered distribution plate 212.

Specifically, the first tapered distribution plate 211 is disposed above the second tapered distribution plate 212, and the first tapered distribution plate 211 is disposed along the entire circumference of the outer circumference of the second tapered distribution plate 22 to form a two-stage distribution plate structure. The top end of the first tapered distribution plate 211 can be connected to the inner wall of the fluidized bed 1, the bottom end of the first tapered distribution plate 211 is connected to the top end of the second tapered distribution plate 212, both the first tapered distribution plate 211 and the second tapered distribution plate 212 can be tapered distribution plate structures, and both the first tapered distribution plate 211 and the second tapered distribution plate 212 can be integrated structures or connected in other connection manners, which is not limited in this embodiment; the bottom end of the second conical distribution plate 212 may be connected to the top wall of the central discharge pipe 3. In this embodiment, the first conical distribution plate 211 and the second conical distribution plate 212 are both conical structures, that is, the first conical distribution plate 211 and the second conical distribution plate 212 are both at an angle with the horizontal direction, so as to ensure that the lump-shaped and spherical carbocoal moves toward the center under the fluidization air disturbance, so as to be blown from the gap between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21 into the central discharge pipe 3 below the fixed distribution plate 21.

With continued reference to fig. 3, in the present embodiment, an included angle between the first conical distribution plate 211 and the axial direction of the first conical distribution plate 211, that is, as shown in fig. 3, an included angle a between the first conical distribution plate 211 and the bed body of the fluidized bed 1 may be 30 to 45 °; preferably, an included angle between the first conical distribution plate 211 and the axial direction of the first conical distribution plate 211, that is, an included angle a between the first conical distribution plate 211 and the bed body of the fluidized bed 1 is 30 °; the smaller the included angle between the axial directions of the first conical distribution plate 211 and the first conical distribution plate 211 is, the steeper the first conical distribution plate 211 is, so that the sidewall material can be ensured not to be accumulated.

With continued reference to fig. 3, in the present embodiment, an included angle b between the first conical distribution plate 211 and the second conical distribution plate 212 may be 120 to 180 °; preferably, the included angle b between the first conical distribution plate 211 and the second conical distribution plate 212 is 150 °, so as to ensure that the second conical distribution plate 212 has a certain angle with the horizontal direction, which can ensure that the blocky and spherical carbocoal moves toward the center under the fluidization air disturbance.

With continued reference to fig. 1 and 3, the mobile distributor plate 22 includes: a top spherical distribution plate 221, a breather pipe 222, and an impeller 223; the top spherical distribution plate 221 is arranged above the vent pipe 222 and used for distributing fluidization gas introduced into the vent pipe 222 to fluidize the material and blowing coarse and semi-coke particles to the periphery to discharge slag; the propeller 223 is disposed on the snorkel 222 for applying a driving force to the snorkel 222 so that the snorkel 222 drives the overhead ball distributor 221 to move along the axial direction of the snorkel 222.

In particular, the aeration pipe 222 may be arranged inside the central discharge pipe 3, and the distance gap between them forms the annular deslagging channel 23. The aeration pipe 222 may be connected with a fluidizing gas inlet pipe for introducing fluidizing gas into the aeration pipe 222, and the fluidizing gas may flow upwards and may flow upwards to the top of the fluidized bed 1 from distribution holes provided on the top spherical distribution plate 221 to achieve fluidization of the material. The propeller 223 may be an electric propeller so that the air duct 222 and the annular exhaust channel 23 are moved upward along the central exhaust duct 3 by the electric propeller. The top ball-shaped distribution plate 221 and the air pipe 222 are connected by a connection limiting plate 224, and are configured to press against and contact the fixed distribution plate 21 when discharging is not needed, that is, the connection limiting plate 224 is supported by the fixed distribution plate 21, so that the movable distribution plate 22 is supported on the fixed distribution plate 21 when discharging is not needed.

With continued reference to fig. 1 to 3, the second conical distribution plate 212 is provided with two areas, namely a support area C and a gas distribution area B arranged on the periphery of the support area C, wherein the support area C is used for supporting the connection limiting plate 224 of the movable distribution plate 22 when material discharge is not required, and is also used for circulating fluidizing gas when material discharge is required, so as to disturb the falling blocky and spherical semicoke of the gas distribution area B, so that the semicoke falls into the central discharge pipe 3. Specifically, the first conical distribution plate 211 may have a peripheral distribution area a formed thereon; when slag discharging is not needed, the area of the second conical distribution plate 212, which is in contact with and overlapped with the connection limiting plate 224, is a support area C, and the other area of the second conical distribution plate 212 is an air distribution area B; the area on the top spherical distribution plate 221 can be a spherical area D, so that the area A, the area B and the area C form a fixed area of the distribution plate, and the area D is a movable area of the distribution plate and is a spherical area arranged at the top of the central discharge pipe; A. b, C, D the distribution plates are all provided with small holes with uniform openings, i.e. distribution holes, to ensure uniform distribution of the fluidizing gas and proper gas velocity, and to realize fluidization and overflow of the semicoke in the fluidized bed. When the movable distribution plate 22 is not opened, i.e. does not move, the zone C is covered by the connection limiting plate 224, and no fluidizing gas passes through; when the movable distribution plate 22 is opened, i.e. moved, a part of the fluidizing gas passes through the distribution holes in the area C to disturb the blocky and spherical particles falling from the area B, so as to ensure that all the particles fall into the annular deslagging channel 23; the spherical arrangement of zone D facilitates the fluidization of the material in the area above the central tube and the blowing of the bulk material to the periphery of zone D, so that it is blown along zone B into the annular extraction channel 23. This four fluidization subregion's setting can realize caking, globular semicoke and arrange the concentration of material pipe 3 to the center, need not to adjust the fluidization tolerance when can realizing arranging the material again, and the whole fluidization region of fluidized bed is stable, and the material can smoothly fall under C district fluidization gas and distribution plate slope effect.

With continued reference to fig. 1, a heat exchanger 41 is arranged in the ash hopper collection tank 4 and is used for cooling the material collected by the ash hopper collection tank 4 to cool the high-temperature material to room temperature; the inlet and the outlet of the ash bucket collecting tank 4 are provided with cut-off valves 42 for cutting off the input and the output of the ash bucket collecting tank 3. Wherein, the heat exchanger 41 is provided with a cooling water inlet and a cooling water outlet to cool the materials in the ash hopper collecting tank 4 by using the cooling water as a medium. The heat exchanger 41 may be a jacketed heat pipe structure, or may be other heat exchange structures, which is not limited in this embodiment.

In this embodiment, a thermocouple (not shown) is disposed above the movable online slag discharging distribution plate 2 in the fluidized bed 1 for detecting the temperature above the movable online slag discharging distribution plate 2. The thermocouple is connected with an alarm and used for receiving the temperature detected by the thermocouple and giving an alarm when the temperature is lower than a preset temperature so as to prompt that the material fluidization state in the fluidized bed is poor and slag needs to be discharged, so that the bed pressure difference stability of the fluidized bed 1 can be checked, the movable distribution plate can be controlled to move upwards when the bed pressure difference of the fluidized bed 1 is unstable, the slag is discharged by starting, and coarse carbocoal particles are discharged into the ash hopper collecting tank 4. Specifically, when high temperature semicoke got into fluidized bed 1 cooling in succession, the online sediment distribution plate 2 pressure differential increase of movable, and the bed pressure differential of fluidized bed 1 is unstable, can make the online sediment distribution plate 2 of movable top temperature reduction, the accessible thermocouple carries out the detection of temperature, with the stability of the bed pressure differential of preliminary judgement fluidized bed 1, and combine the actual conditions of the bed pressure differential's of fluidized bed 1 stability, judge whether this fluidized bed 1 need arrange sediment, when the sediment is arranged to needs, can start impeller 223, make it promote top spherical distribution plate 221, breather pipe 222 rebound, arrange sediment with the start, make thick semicoke granule arrange to in the ash bucket collecting vessel 4. Under the action of the propeller 223, the top spherical distribution plate 221 can be moved upwards by an initial stroke of 20-100 mm, preferably 40mm, the total stroke of the central discharge pipe can be 200mm, and certainly, the propelling stroke of the propeller 223 can also be adjusted, and the stroke can be adjusted for multiple times by starting for multiple times. Before or at the initial stage of slag discharge, the shut-off valve 42 and the balance pipe 5 on the inlet side of the hopper collection tank 4 can be opened first, so that the material in the annular slag discharge channel 23 can fall into the hopper collection tank 4.

In this embodiment, the controller may further control the movable distribution plate 22 to move downward after a preset time period after the start of slag discharge or when the material collected in the hopper collection tank 4 reaches a preset material level, and may control the propeller 223 to close, so that the top ball-shaped distribution plate 221 falls back to the closed position, i.e. abuts against and contacts the fixed distribution plate 21. Certainly, in order to avoid that the materials in the ash bucket collecting tank 4 are fully piled up to cause that the materials cannot be discharged to downstream equipment under high pressure, preferably, the top of the ash bucket collecting tank 4 is also provided with a high material level detector 43, and when the material level of the materials collected in the ash bucket collecting tank 4 reaches the position of the high material level detector 43, the high material level detector 43 is triggered and sends a trigger closing signal to the controller; the controller is also connected with the high material level detector 43, and is used for receiving the trigger closing signal and driving the movable distribution plate 22 to move downwards so as to be pressed against and contacted with the fixed distribution plate 21, so that the slag discharge is stopped, and the discharge of once accumulated materials is completed. When the top spherical distribution plate 221 falls back to the closed position, the shut-off valve 42 and the balance pipe 5 on the inlet side of the ash bucket collecting tank 4 can be closed, so that the materials are cooled by the heat exchanger 41 and are independently discharged into downstream equipment, and the discharge of the piled materials of the primary distribution plate is completed. Of course, the high level detector 43 may also be connected to an alarm for controlling the alarm to sound when triggered. The high material level detector 43 can feed back the material accumulation state in the ash hopper collecting tank 4, so that the operator can conveniently control the coke discharge of the ash hopper collecting tank 4. The preset temperature, the preset time period and the preset material level can be determined according to actual conditions, and are not limited in this embodiment.

The fluidized bed cooling process flow in this embodiment will be described with reference to fig. 1 to 4: the high-temperature semicoke enters the upper part of the movable online slag-discharging distribution plate 2 through a feed inlet of the fluidized bed 1, fluidized gas is divided into two flow directions, one flow enters the lower part of the fixed distribution plate 21 through an air inlet of the fluidized bed 1 and enters a feeding fluidization region 11 above the fixed distribution plate 21 through distribution holes on the fixed distribution plate 21, the other flow enters a vent pipe 222 and enters the feeding fluidization region 11 through distribution holes on a spherical distribution plate 221 at the top, the high-temperature semicoke is loosened and expanded above the movable online slag-discharging distribution plate 2 along with the fluidization of the fluidized gas, the height of the whole bed layer is increased, the material gradually moves upwards and exchanges heat with a top heat exchange pipe 13 in a fluidization cooling region 12 at the top of the fluidized bed 1, and the cooled semicoke enters downstream equipment through a semicoke overflow port 14; when the temperature detected by the thermocouple is reduced to a preset temperature, the ash hopper collecting tank 4 can be pressurized firstly until the pressure is consistent with that of the fluidized bed 1, then the movable distribution plate 22 is opened, the propeller 223 can be opened, the spherical distribution plate 221 at the top moves upwards under the action of the propeller 223, at the moment, semicoke around the distribution plate 22 is mixed with block-shaped and spherical semicoke under the action of fluidized gas in the zone C during movement, fine semicoke particles are fluidized and move upwards, and the block-shaped and spherical semicoke cannot be upwards supported and gradually blown down to the annular slag discharge channel 23 along the slope of the fixed distribution plate 21; opening the stop valve 42 and the balance pipe 5 at the inlet side of the ash bucket collecting tank 4, and allowing the blocky and nodular semicoke to fall into the ash bucket collecting tank 4; when the movable distribution plate 22 is opened for 5-30 min or the ash bucket collecting tank 4 triggers the high material level detector 43, the propeller 223 is closed, the movable distribution plate 22 falls back to the closed position, the stop valve 42 and the balance pipe 5 on the inlet side of the ash bucket collecting tank 4 are closed at the moment, the material is cooled by the heat exchanger 41 in the ash bucket collecting tank 4, and then the material is discharged into downstream equipment to finish the discharge of the primary distribution plate stacked material.

In summary, in the movable online slag discharging distribution plate and the fluidized bed provided in this embodiment, the movable distribution plate 22 is disposed on the fixed distribution plate 21 and is connected to the fixed distribution plate 21 in a manner that it can move up and down along the axial direction of the fixed distribution plate 21, so that when discharge is not needed, the bottom wall of the movable distribution plate 22 is in abutting contact with the fixed distribution plate 21 and supports the movable distribution plate 22 through the fixed distribution plate 21, and the fixed distribution plate 21 and the movable distribution plate 22 are used as distribution plates to distribute gas cooperatively, so that the fluidizing gas introduced from the lower portions of the fixed distribution plate 21 and the movable distribution plate 22 flows upward from the distribution holes to the top of the fluidized bed 1, and complete fluidization of the material can be achieved; when discharging is needed, the movable distribution plate 22 moves upwards along the axial direction of the fixed distribution plate 21, a gap is formed between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21, fine semicoke particles are driven to move upwards by fluidization, coarse semicoke particles are gradually blown down into the central discharging pipe 3 below the fixed distribution plate 21 from the gap between the bottom wall of the movable distribution plate 22 and the fixed distribution plate 21 along the fixed distribution plate 21, slag discharging is realized, the slag discharging can be realized without adjusting the fluidization gas amount, the slag discharging can be realized only by adjusting the height of the movable distribution plate 22 to achieve the cleaning effect, namely, massive and spherical semicoke above the distribution plate can be cleaned on line at high pressure, the device is suitable for the particularly light and intermittent discharging process of the bulk density of the distribution plate, and the long-period stable fluidization effect of the distribution plate can be maintained; meanwhile, through the movement control of the movable distribution plate 22, namely the opening time and the stroke are controllable, the falling of blocky and spherical semicoke can be met, and the problem that the fluidization effect is difficult to control because the fluidization gas is directly introduced into the conventional central pipe is solved. This movable arranges sediment distributing plate and fluidized bed on line can realize arranging the sediment as required of high-pressure fluidized bed, easy operation, easily control, the fluidized bed of the harsh operating mode such as the low and high temperature high pressure of sediment volume of specially adapted row, simultaneously, adopts this distributing plate, with greatly reduced operating personnel's intensity of labour, the stability of reinforcing technology, can ensure the continuous steady operation of distributing plate, reduces the parking frequency that the distributing plate leads to unusually, can bring huge economic benefits for the enterprise.

Furthermore, the movable online slag discharge distribution plate is provided with four fluidization subareas, so that agglomeration and concentration of spherical semicoke to the central pipe can be realized, the fluidization air amount does not need to be adjusted during discharge, the whole fluidization area of the fluidized bed is stable, and materials can smoothly fall under the action of fluidization air and the slope of the distribution plate; ash bucket collection tank 4 has high material level detector 43, can feed back the material state of piling up in ash bucket collection tank 4, makes things convenient for operating personnel to control the row burnt of ash bucket collection tank 4, prevents that the material backlog from leading to the unable discharge of material in the ash bucket collection tank 4.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The utility model provides a movable arranges sediment distributing plate on line which characterized in that includes: a fixed distribution plate and a movable distribution plate; wherein the content of the first and second substances,

the movable distribution plate is arranged on the fixed distribution plate and is connected with the fixed distribution plate in a mode of moving up and down along the axial direction of the fixed distribution plate;

when discharging is not needed, the bottom wall of the movable distribution plate is in abutting contact with the fixed distribution plate;

when discharging is needed, the movable distribution plate moves upwards along the axial direction of the fixed distribution plate, so that a gap is formed between the bottom wall of the movable distribution plate and the fixed distribution plate, fine semicoke particles are fluidized to move upwards, and coarse semicoke particles gradually flow along the fixed distribution plate from the bottom wall of the movable distribution plate and the gap between the fixed distribution plates to be blown down into the central discharge pipe, so that slag discharging is realized.

2. The movable online slag tapping distribution plate of claim 1, wherein the movable distribution plate comprises: the top spherical distribution plate, the vent pipe and the propeller are arranged on the top of the box body; wherein, the first and the second end of the pipe are connected with each other,

the top spherical distribution plate is arranged above the vent pipe and used for distributing gas to the fluidizing gas introduced into the vent pipe so as to fluidize the material and blow coarse semi-coke particles to the periphery to discharge slag;

the propeller is arranged on the breather pipe and used for applying driving force to the breather pipe so as to enable the breather pipe to drive the top spherical distribution plate to move along the axial direction of the breather pipe.

3. The movable on-line slag-discharging distribution plate of claim 2,

the top spherical distribution plate is connected with the vent pipe through a connecting limiting plate and is used for abutting against and contacting the fixed distribution plate when discharging is not needed.

4. The movable on-line slag tapping distribution plate according to any one of claims 1 to 3, wherein the fixed distribution plate comprises: a first conical distribution plate and a second conical distribution plate; wherein the content of the first and second substances,

the first conical distribution plate is arranged above the second conical distribution plate along the periphery of the second conical distribution plate, and an obtuse angle is formed between the first conical distribution plate and the second conical distribution plate.

5. The movable on-line slag-discharging distribution plate of claim 4,

the second toper distributing plate is equipped with two districts, is in for supporting area and setting respectively the gas distribution district of supporting area periphery, it is right when not needing to arrange the material that the supporting area is used for portable distributing plate supports, still is used for circulating fluidization gas when needs arrange the material, in order to disturb the cubic, the ball piece semicoke of gas distribution district whereabouts to make it fall into central discharge tube.

6. The movable on-line slag-discharging distribution plate of claim 4,

the included angle between the first conical distribution plate and the axial direction of the first conical distribution plate is 30-45 degrees;

the included angle between the first conical distribution plate and the second conical distribution plate is 120-180 degrees.

7. A fluidized bed provided with a movable inline slag tapping distribution plate according to any one of claims 1 to 6.

8. The fluidized bed according to claim 7,

a central discharge pipe is connected below a fixed distribution plate of the movable online slag discharge distribution plate, the movable distribution plate part of the movable online slag discharge distribution plate is movably arranged in the central discharge pipe, and an annular slag discharge channel is arranged between the movable distribution plate and the central discharge pipe;

the central discharge pipe penetrates through the bottom wall of the fluidized bed, and the end part of the central discharge pipe, which is arranged outside the fluidized bed, is connected with an ash hopper collecting tank.

9. The fluidized bed of claim 8,

a thermocouple is arranged above the movable online slag discharging distribution plate in the fluidized bed and is used for detecting the temperature above the movable online slag discharging distribution plate;

the thermocouple is connected with an alarm and used for receiving the temperature detected by the thermocouple and giving an alarm when the temperature is lower than a preset temperature so as to prompt that the material fluidization state in the fluidized bed is poor and slag needs to be discharged;

a high material level detector is arranged at the top of the ash hopper collecting tank, and when the material level of the material collected in the ash hopper collecting tank reaches the position of the high material level detector, the high material level detector is triggered and sends a trigger closing signal to the controller;

the controller is connected with the high material level detector and used for receiving the trigger closing signal and driving the movable distribution plate to move downwards so as to be in abutting contact with the fixed distribution plate, so that slag discharge is stopped, and one-time discharge of stacked materials is completed.

10. Fluidized bed according to claim 8 or 9,

the ash bucket collecting tank is internally provided with a heat exchanger for cooling the materials collected by the ash bucket collecting tank;

the inlet and the outlet of the ash bucket collecting tank are provided with cut-off valves for cutting off the input and the output of the ash bucket collecting tank;

and a balance pipe is arranged between the ash hopper collection tank and the fluidized bed and is used for balancing the pressure difference between the ash hopper collection tank and the fluidized bed so as to enable the coarse semicoke particles to fall into the ash hopper collection tank.

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