A chute arrangement and a boiler system

Abstract

The utility model provides a chute device and boiler system, including the chute who is used for the molten material in liquid slagging furnace is introduced into the cold cinder device, still include the cover shell subassembly who is connected with liquid slagging furnace, cold cinder device and chute respectively, wherein, the chute and cover shell subassembly form and have one end with liquid slagging furnace communication another end with cold cinder device communication's sealed slagging channel. The utility model can solve the poor flowability and safety problem of molten material caused by the non - airtightness of chute device.

Description

Technical Field

[0001] This utility model relates to the field of molten slag discharge technology for liquid slag discharge furnaces such as waste liquid incineration boilers, waste liquid incineration insulated furnaces, and alkali recovery boilers, and particularly to a chute device and a boiler. Background Technology

[0002] Petrochemical processes often generate industrial wastewater with high sodium and potassium content. Incinerating this wastewater will produce CO3. 2- SO4 2- Cl - Sodium and potassium salts of various types have a melting temperature in the range of 700-1050℃. Therefore, a liquid molten pool will be formed at the bottom of the boiler or incinerator. The sodium and potassium salts flow in the form of molten material and enter the crushing and cooling slag machine.

[0003] Existing sluices for molten materials are open-type. Besides being cooled by the sluice's cooling water, the molten material is also significantly affected by ambient temperature. Sometimes, the molten material at the sluice inlet and during its flow is cooled and agglomerated by cold air, causing blockages and affecting the continuous flow of the molten material. Furthermore, petrochemical enterprises have high safety requirements for open flames, prohibiting their exposure to the atmosphere. Therefore, it is necessary to develop a sluice device to solve the problems of poor molten material flowability and safety caused by the lack of a sealed sluice. Utility Model Content

[0004] The purpose of this invention is to provide a chute device and boiler system to solve the problems of poor melt flowability and safety caused by the lack of sealing in existing chute devices and boiler systems.

[0005] To solve the above-mentioned technical problems, this utility model provides a sluice device, including a sluice for introducing molten material from a liquid slag discharge furnace into a cold slag device, and a cover assembly connected to the liquid slag discharge furnace, the cold slag device and the sluice respectively, wherein the sluice and the cover assembly form a sealed slag discharge channel with one end connected to the liquid slag discharge furnace and the other end connected to the cold slag device.

[0006] Optionally, the casing assembly includes a housing connected to the liquid slag discharge furnace and the chute respectively, and an expansion joint connected to the housing and the slag cooling device respectively.

[0007] Optionally, the housing includes a first cover welded to the furnace wall of the liquid slag discharge furnace, a second cover disposed above the chute and connected to the first cover and the upper part of the chute, and a third cover disposed below the chute and connected to the slag cooling device and the lower part of the chute, wherein the second cover is connected to the third cover.

[0008] Optionally, the chute is inclined relative to the horizontal plane, and the height of the end near the liquid slag discharge furnace is higher than the height of the end near the cold slag device.

[0009] Optionally, the chute includes an inlet pipe, a drain pipe, a trough body, and a flow guide sleeved in the trough body. A cooling cavity is formed between the trough body and the flow guide. The inlet pipe and the drain pipe are disposed on the trough body and communicate with the cooling cavity. The flow guide has a through groove for guiding the molten material.

[0010] Optionally, the bottom of the flow guide is V-shaped.

[0011] Optionally, the chute device further includes a decoking assembly for removing cooled molten material from the chute.

[0012] Optionally, the coke removal assembly includes a coke removal cylinder, a pull rod, and a furnace-poke claw. The coke removal cylinder is mounted on the cover assembly, the pull rod is connected to the output shaft of the coke removal cylinder, and the furnace-poke claw is mounted on the pull rod.

[0013] Optionally, the descaling assembly further includes a buffer seat, which is mounted on the outside of the cover assembly. The outer shell of the descaling cylinder is slidably mounted on the buffer seat and can slide relative to the buffer seat in the direction of extension and retraction along the output shaft of the descaling cylinder. The buffer seat is provided with an elastic element that allows the outer shell of the descaling cylinder to slide away from the cover assembly.

[0014] This utility model also provides a boiler system, including a liquid slag discharge furnace, a slag cooling device, and the aforementioned chute device, wherein the chute device is connected to the liquid slag discharge furnace and the slag cooling device respectively.

[0015] The chute device and boiler system provided by this utility model have the following beneficial effects:

[0016] Since the chute is used to guide the molten material from the liquid slag discharge furnace into the cold slag device, the molten material can be introduced from the liquid slag discharge furnace into the cold slag device along the chute. Furthermore, since the cover assembly is connected to the liquid slag discharge furnace, the cold slag device, and the cover assembly respectively, and the chute and the cover assembly form a sealed slag discharge channel with one end connected to the liquid slag discharge furnace and the other end connected to the cold slag device, the cover assembly will not affect the entry of the molten material from the liquid slag discharge furnace into the cold slag device. Moreover, the sealed slag discharge channel formed by the cover assembly and the chute avoids open flame exposure, which can reduce production safety risks. At the same time, it can reduce the risk that the molten material in the chute will solidify due to cooling under the action of external cold air, thus affecting the fluidity of the molten material. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the chute device in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the chute in the chute device in this embodiment of the utility model;

[0019] Figure 3 This is a side view of the chute in the chute device in this embodiment of the utility model;

[0020] Figure 4 yes Figure 2 Cross-sectional view of the chute along line AA;

[0021] Figure 5 yes Figure 2 Cross-sectional view of the chute along line BB in the middle;

[0022] Figure 6 yes Figure 2 Cross-sectional view of the chute along the CC line;

[0023] Figure 7 yes Figure 2 A view of the chute from direction D;

[0024] Figure 8 This is a front view of the water-cooled wall sealing box in the chute device of this utility model embodiment;

[0025] Figure 9 This is a top view of the water-cooled wall sealing box in the chute device in this embodiment of the utility model;

[0026] Figure 10 This is a front view of the descaling component in the chute device of this utility model embodiment;

[0027] Figure 11 This is a partially enlarged schematic diagram of the descaling component in the chute device of this utility model embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 200-Chutter; 210-Inlet pipe; 220-Drain pipe; 230-Tank body; 240-Flow guide; 241-Through groove; 250-Cooling chamber;

[0030] 311-First casing; 312-Second casing; 313-Observation door; 314-Sight mirror; 315-Third casing; 320-Expansion joint;

[0031] 400-Coking component; 410-Coking cylinder; 420-Tie rod; 430-Furnace claw; 440-Buffer seat; 450-Elastic element. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 , Figure 1 This is a schematic diagram of the chute device in an embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of the chute 200 in the chute device of this utility model embodiment. Figure 3 This is a side view of the chute 200 in the chute device of this utility model embodiment. Figure 4 yes Figure 2 Cross-sectional view of chute 200 along line AA. Figure 5 yes Figure 2 Cross-sectional view of chute 200 along line BB. Figure 6 yes Figure 2 Cross-sectional view of chute 200 along line CC. Figure 7 yes Figure 2 View of chute 200 from direction D. Figure 8 This is a front view of the water-cooled wall sealing box in the chute device of this utility model embodiment. Figure 9 This is a top view of the water-cooled wall sealing box in the chute device of this utility model embodiment. Figure 10 This is a front view of the descaling component 400 in the chute device of this utility model embodiment. Figure 11 This is a partially enlarged schematic diagram of the coke removal component 400 in the sluice device of this utility model embodiment. This embodiment provides a sluice device, including a sluice 200 for introducing molten material from a liquid slag discharge furnace into a cold slag device, and a cover assembly connected to the liquid slag discharge furnace, the cold slag device and the sluice 200 respectively. The sluice 200 and the cover assembly form a sealed slag discharge channel with one end connected to the liquid slag discharge furnace and the other end connected to the cold slag device.

[0039] Since the chute 200 is used to guide the molten material from the liquid slag discharge furnace into the slag cooling device, the molten material can be introduced from the liquid slag discharge furnace into the slag cooling device along the chute 200. Furthermore, since the cover assembly is connected to the liquid slag discharge furnace, the slag cooling device, and the cover assembly respectively, and the chute 200 and the cover assembly form a sealed slag discharge channel with one end connected to the liquid slag discharge furnace and the other end connected to the slag cooling device, the cover assembly will not affect the entry of the molten material from the liquid slag discharge furnace into the slag cooling device. Moreover, the sealed slag discharge channel formed by the cover assembly and the chute 200 avoids open flame exposure, which can reduce production safety risks. At the same time, it can reduce the risk that the molten material in the chute 200 will solidify due to cooling under the action of external cold air, thus affecting the fluidity of the molten material.

[0040] refer to Figure 1 The casing assembly includes a shell and an expansion joint 320. The shell is connected to the liquid slag discharge furnace and the chute 200, and the expansion joint 320 is connected to the shell and the slag cooling device. In this way, the expansion of the furnace can be absorbed by the expansion joint 320, which can improve the safety and stability of the chute device.

[0041] Specifically, the housing includes a first cover 311, a second cover 312, and a third cover 315. The first cover 311 is welded to the furnace wall of the liquid slag discharge furnace. The second cover 312 is disposed above the chute 200 and connected to the first cover 311 and the upper part of the chute 200. The third cover 315 is disposed below the chute 200 and connected to the slag cooling device and the lower part of the chute 200. The second cover 312 is connected to the third cover 315. This facilitates the processing and installation of the housing.

[0042] refer to Figure 8 and Figure 9 The first cover 311 must fit tightly against the water-cooled wall (or furnace wall) of the liquid slag discharge furnace. The first cover 311 has a comb-shaped plate, which is sealed and welded to the water-cooled wall. After the first cover 311 is sealed and welded to the water-cooled wall, high-temperature castable GD170 is poured in.

[0043] The flange on the first cover 311 is sealed to the flange of the chute 200.

[0044] The first cover 311 is connected to the second cover 312 flange via a flange.

[0045] The second cover 312 and the inclined surface of the chute 200 are detachably connected by a flange for easy disassembly.

[0046] An observation door 313 is provided on the second cover 312.

[0047] The second cover 312 is also provided with a viewing mirror 314.

[0048] The third cover 315 and the chute 200 are connected by a flange for easy disassembly.

[0049] The third cover 315 is welded to the inside of the expansion joint 320.

[0050] The chute 200 is sealed and welded to the water-cooled wall sealing plate of the liquid slag discharge furnace.

[0051] The expansion joint 320 is sealed and welded to the cold slag device. The expansion joint 320 is a non-metallic expansion joint 320, which can absorb 120mm of compression expansion and can withstand a high temperature of 1300℃.

[0052] refer to Figure 1 The chute 200 is inclined relative to the horizontal plane, and the height of the end near the liquid slag discharge furnace is higher than the height of the end near the cold slag device.

[0053] Specifically, the chute 200 is installed at an angle of 45-50° relative to the horizontal plane so that the high-temperature molten material flows out under the action of gravity.

[0054] refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The chute 200 includes an inlet pipe 210, a drain pipe 220, a tank body 230, and a guide member 240 sleeved within the tank body 230. A cooling chamber 250 is formed between the tank body 230 and the guide member 240. The inlet pipe 210 and the drain pipe 220 are disposed on the tank body 230 and communicate with the cooling chamber 250. The guide member 240 has a through groove 241 for guiding the molten material. In this way, cooling water can enter the cooling chamber 250 from the inlet pipe 210 and then flow out from the drain pipe 220. Thus, the guide member 240 can be cooled by the cooling water, thereby reducing the risk of damage to the guide member 240 due to excessively high molten material temperature.

[0055] Preferably, the bottom of the guide member 240 is V-shaped, which can effectively reduce the cooling effect on the part of the guide member 240 in contact with the molten material. In this way, the risk of the guide member 240 being damaged due to the high temperature of the molten material can be reduced, while avoiding the molten material inside the guide member 240 from becoming too cold and solidifying, thus affecting the fluidity of the molten material.

[0056] Preferably, the water inlet pipe 210 is located at one end of the tank 230 near the liquid slag discharge furnace, and the drain pipe 220 is located at one end of the tank 230 near the slag cooling device. In this way, the guide member 240 can be effectively cooled by cooling water.

[0057] The cooling water flowing through the cooling chamber 250 can be circulating cooling water or demineralized water. The water temperature in the cooling water inlet pipe 210 is 20-35℃, and the water temperature in the drain pipe 220 is 40-50℃.

[0058] The flow guide 240 is made of NiCr alloy material through overlay welding.

[0059] refer to Figure 10 and Figure 11 The chute device further includes a decoking assembly 400 for removing the cooled molten material inside the chute 200.

[0060] Specifically, the coke removal assembly 400 includes a coke removal cylinder 410, a pull rod 420, and a furnace-poke claw 430. The coke removal cylinder 410 is mounted on the cover assembly, the pull rod 420 is connected to the output shaft of the coke removal cylinder 410, and the furnace-poke claw 430 is mounted on the pull rod 420. Thus, the extension and retraction of the coke removal cylinder 410 can drive the extension and retraction of the pull rod 420 and the furnace-poke claw 430, thereby cleaning the cooled molten material on the chute 200 through the furnace-poke claw 430.

[0061] Preferably, the coke removal assembly 400 further includes a buffer seat 440, which is mounted on the outer side of the cover assembly. The outer shell of the coke removal cylinder 410 is slidably mounted on the buffer seat 440 and can slide relative to the buffer seat 440 along the direction of extension and retraction of the output shaft of the coke removal cylinder 410. The buffer seat 440 is provided with an elastic element 450 that allows the outer shell of the coke removal cylinder 410 to slide away from the cover assembly. In this way, the elastic element 450 on the buffer seat 440 can buffer the coke removal cylinder 410, which can prevent damage to the connection between the outer shell of the coke removal cylinder 410 and the cover assembly during the movement of the furnace claw 430, as well as damage to the coke removal cylinder 410, thereby improving the reliability of the coke removal assembly 400.

[0062] The coke removal assembly 400 also includes a buffer pad, which is disposed between the outer shell and the cover assembly of the coke removal cylinder 410 to further prevent damage to the coke removal cylinder 410 and improve the reliability of the coke removal assembly 400.

[0063] The elastic element 450 is preferably a compression spring.

[0064] Preferably, the output shaft of the descaling cylinder 410 extends and retracts horizontally.

[0065] Specifically, the descaling component 400 is mounted on the second housing.

[0066] When the horizontal coking component 400 is in a static state, the distance between the furnace claw 430 and the opening of the chute 200 is 300mm.

[0067] The number of furnace-poke claws 430 is two.

[0068] The shape of the furnace poker 430 is adapted to the flow guide 240 of the chute 200.

[0069] This embodiment also provides a boiler system, including a liquid slag discharge furnace, a slag cooling device, and a chute device as described in the above embodiment, wherein the chute device is connected to the liquid slag discharge furnace and the slag cooling device respectively.

[0070] In this embodiment, the slag cooling device includes a dissolving tank or a slag cooling machine. The liquid slag discharge furnace includes a boiler, an incinerator, and other furnaces.

[0071] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A chute device, comprising a chute for introducing molten material from a liquid slag discharge furnace into a cold slag device, characterized in that, It also includes a cover assembly connected to the liquid slag discharge furnace, the slag cooling device, and the chute, wherein the chute and the cover assembly form a sealed slag discharge channel with one end connected to the liquid slag discharge furnace and the other end connected to the slag cooling device; the cover assembly includes a shell connected to the liquid slag discharge furnace and the chute, and an expansion joint connected to the shell and the slag cooling device; the shell includes a first cover welded to the furnace wall of the liquid slag discharge furnace, a second cover disposed above the chute and connected to the first cover and the upper part of the chute, and a third cover disposed below the chute and connected to the slag cooling device and the lower part of the chute, wherein the second cover is connected to the third cover; the first cover has a comb-shaped plate, and the comb-shaped plate is sealed and welded to the water-cooled wall; The chute includes an inlet pipe, a drain pipe, a trough body, and a flow guide sleeved in the trough body. A cooling chamber is formed between the trough body and the flow guide. The inlet pipe and the drain pipe are arranged on the trough body and communicate with the cooling chamber. The flow guide has a through groove for guiding the molten material. The bottom of the flow guide is V-shaped; The chute device also includes a decoking assembly for removing the cooled molten material from the chute; The coke removal assembly includes a coke removal cylinder, a pull rod, and a furnace poking claw. The coke removal cylinder is mounted on the cover assembly, the pull rod is connected to the output shaft of the coke removal cylinder, and the furnace poking claw is mounted on the pull rod. The coke removal assembly also includes a buffer seat, which is installed on the outside of the cover assembly. The outer shell of the coke removal cylinder is slidably installed on the buffer seat and can slide relative to the buffer seat in the direction of extension and retraction along the output shaft of the coke removal cylinder. The buffer seat is provided with an elastic element that allows the outer shell of the coke removal cylinder to slide away from the cover assembly. The descaling assembly also includes a buffer pad, which is disposed between the outer shell of the descaling cylinder and the cover assembly.

2. The chute device as described in claim 1, characterized in that, The chute is inclined relative to the horizontal plane, and the height of the end near the liquid slag discharge furnace is higher than the height of the end near the cold slag device.

3. A boiler system, characterized in that, It includes a liquid slag discharge furnace, a slag cooling device, and a chute device as described in claim 1 or 2, wherein the chute device is connected to the liquid slag discharge furnace and the slag cooling device, respectively.

Images