A wet material system for post-treatment of desulfurization by ammonia method

Abstract

The application discloses an ammonia desulfurization post-treatment wet material discharging system, which comprises a centrifugal machine, a discharging pipe, a frame, a packaging container, an exhaust pipe, a dust remover and an induced draft fan; the centrifugal machine is used for inputting ammonium sulfate slurry; the outlet of the centrifugal machine is connected with one end of the discharging pipe; the frame is detachably connected with the packaging container; the other end of the discharging pipe is communicated with the packaging container, and the ammonium sulfate slurry can be conveyed into the packaging container through the discharging pipe; the discharging pipe is provided with an exhaust hole; one end of the exhaust pipe is communicated with the exhaust hole, and the other end of the exhaust pipe is connected with the inlet of the dust remover; the outlet of the dust remover is connected with the induced draft fan, and the induced draft fan can extract flue gas in the discharging pipe. The application discards the traditional complex system such as the fluidized bed drying, directly packages the wet material, shortens the production process, effectively improves the post-treatment discharging capacity, relieves the operation corrosion and vibration of the post-treatment building, and significantly improves the on-site operation environment.

Description

Technical Field

[0001] This application relates to the field of ammonia desulfurization technology, and in particular to a wet feed discharge system for ammonia desulfurization post-treatment. Background Technology

[0002] Ammonia-based desulfurization involves reacting SO2 in flue gas with ammonia in an absorbent to produce an ammonium sulfate slurry. This slurry is then concentrated to increase its supersaturation, causing ammonium sulfate crystals to grow and precipitate. Solid-liquid separation then occurs. The separated wet ammonium sulfate enters a post-treatment drying and packaging system, where it is dried to produce the final ammonium sulfate product.

[0003] In existing technologies, traditional post-treatment systems are complex processes, including equipment and facilities such as hydrocyclones, centrifuges, blowers, induced draft fans, fluidized beds, cyclone separators, washing towers, washing pumps, and heat exchangers. They suffer from numerous problems, such as high failure rates in the drying system, frequent cleaning of the fluidized bed, and severe leaks, seriously affecting the safe and stable operation of the desulfurization unit. Simultaneously, the post-treatment equipment in the desulfurization unit consumes a lot of electricity and steam, and the post-treatment building experiences severe vibration and corrosion during operation. Therefore, there is an urgent need for a simple, low-energy-consumption wet feed post-treatment system for ammonia-based desulfurization. Utility Model Content

[0004] This application provides a wet feed discharge system for ammonia desulfurization post-treatment, which solves the problems of complex structure, high failure rate and high energy consumption in the existing post-treatment discharge system.

[0005] This utility model provides a wet material discharge system for ammonia desulfurization post-treatment, including a centrifuge, a feeding pipe, a frame, a packaging container, an exhaust pipe, a dust collector, and an induced draft fan. Ammonium sulfate slurry is fed into the centrifuge, and the centrifuge outlet is connected to one end of the feeding pipe. The packaging container is detachably connected within the frame, and the other end of the feeding pipe communicates with the packaging container, allowing the ammonium sulfate slurry to be transported into the packaging container via the feeding pipe. An exhaust port is provided on the feeding pipe. One end of the exhaust pipe communicates with the exhaust port, and the other end of the exhaust pipe is connected to the inlet of the dust collector. The outlet of the dust collector is connected to the induced draft fan, which extracts the flue gas from the feeding pipe.

[0006] In one possible implementation, a bag hook is also included; the packaging container is connected to the frame via the bag hook.

[0007] In one possible implementation, a collection slot is also included; the collection slot is provided at the bottom of the frame.

[0008] In one possible implementation, the feed tube is also provided with an observation port.

[0009] In one possible implementation, a support tube is also included; both ends of the support tube are mounted on the frame; the feed tube passes through the support tube and is fixedly connected to the support tube.

[0010] In one possible implementation, a gate is also included; the gate is disposed on the feed pipe and is located between the frame and the vent.

[0011] In one possible implementation, the collection tank is made of stainless steel.

[0012] In one possible implementation, the collection trough is surrounded by a high dike; the collection trough has an opening.

[0013] One or more technical solutions provided in this application have at least the following technical effects: This utility model embodiment employs a wet material discharge system for ammonia desulfurization post-treatment, including a centrifuge, a feeding pipe, a frame, a packaging container, an exhaust pipe, a dust collector, and an induced draft fan. Ammonium sulfate slurry is input into the centrifuge inlet, and the centrifuge outlet is connected to one end of the feeding pipe. The packaging container is detachably connected within the frame, and the other end of the feeding pipe communicates with the packaging container, allowing the ammonium sulfate slurry to be transported into the packaging container via the feeding pipe. An exhaust port is provided on the feeding pipe. One end of the exhaust pipe communicates with the exhaust port, and the other end connects to the inlet of the dust collector. The outlet of the dust collector is connected to the induced draft fan, which extracts the flue gas from the feeding pipe. A gate is also included; the gate is located on the feeding pipe, between the frame and the exhaust port.

[0014] The ammonium sulfate slurry with a certain solid content produced during the pretreatment of ammonia desulfurization is separated into solid and liquid components by a centrifuge, producing by-product ammonium sulfate. This ammonium sulfate product is fed into packaging containers through a feed pipe. During container replacement, the manual baffle door is closed; after container replacement, the baffle door is opened. Because there is a slight positive pressure at the centrifuge outlet, an exhaust pipe is installed in the middle of the feed pipe. An induced draft fan extracts the flue gas from the pipe, maintaining a slight negative pressure within the feed pipe to ensure a safe working environment for the packaging process. Simultaneously, a dust collector is installed between the exhaust pipe and the induced draft fan to collect and remove ammonium sulfate dust carried out of the exhaust pipe.

[0015] Furthermore, a collection trough is installed at the bottom of the frame to collect ammonium sulfate material that spills during packaging and bag changing, thus keeping the packaging floor clean and tidy. The observation port is mainly used to observe the flow of material in the feed pipe. In case of blockage, tools can be used to clear the blockage through this observation port.

[0016] This application solves the problems of complex structure, high failure rate, and high energy consumption in existing post-processing discharge systems. It shortens the production process, effectively improves post-processing discharge capacity, alleviates corrosion and vibration during operation of the post-processing building, significantly improves the on-site operating environment, reduces workload, and simultaneously reduces system power and steam consumption, thus lowering operating costs. Furthermore, this system has a simple structure and is easy to operate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of a wet feed output system for ammonia desulfurization post-treatment provided in an embodiment of this application; Figure 2 A left view of a wet feed system for post-treatment of ammonia desulfurization provided in an embodiment of this application; Figure 3 for Figure 1 AA sectional view.

[0019] Icons: 1-Centrifuge; 2-Feeding pipe; 3-Frame; 4-Exhaust pipe; 5-Dust collector; 6-Exhaust fan; 7-Bag hook; 8-Collection tank; 9-Observation port; 10-Support pipe; 11-Insert door. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0022] This utility model provides a wet material discharge system for ammonia desulfurization post-treatment, including a centrifuge 1, a feeding pipe 2, a frame 3, a packaging container, an exhaust pipe 4, a dust collector 5, and an induced draft fan 6. Ammonium sulfate slurry is fed into the inlet of the centrifuge 1, and the outlet of the centrifuge 1 is connected to one end of the feeding pipe 2. The packaging container is detachably connected inside the frame 3, and the other end of the feeding pipe 2 is connected to the packaging container, allowing the ammonium sulfate slurry to be transported into the packaging container via the feeding pipe 2. An exhaust port is provided on the feeding pipe 2. One end of the exhaust pipe 4 is connected to the exhaust port, and the other end of the exhaust pipe 4 is connected to the inlet of the dust collector 5. The outlet of the dust collector 5 is connected to the induced draft fan 6, which extracts the flue gas from the feeding pipe 2.

[0023] For example, the inlet of centrifuge 1 receives ammonium sulfate slurry from a previous process, and its outlet is connected to one end of the feed pipe 2. The feed pipe 2 is preferably a DN400 stainless steel round pipe, which is fixedly supported on the upper part of the frame 3 by a support pipe 10. The support pipe 10 is welded to both sides of the feed pipe 2, and its two ends are supported on the crossbars of the frame 3.

[0024] For example, frame 3 preferably consists of four legs and reinforcing rods, with four bag hooks 7 at its upper four corners for hanging packaging containers, which are packaged as bags. On the feed pipe 2, an observation port 9, an exhaust pipe 4, and a gate 11 are sequentially arranged along the material flow direction. Specifically, the observation port 9 is located approximately 3 meters below the outlet of centrifuge 1, is a rectangular opening with a welded square flange, and is used for observing and clearing materials. The exhaust pipe 4 is located in the middle of the feed pipe 2, approximately 1 meter above frame 3. The exhaust pipe 4 is a DN200 round pipe, welded in a Y-shaped upward angle to prevent material accumulation and blockage, and its outlet is connected to the inlet of dust collector 5. Dust collector 5 is preferably a bag filter dust collector 5, and its outlet is connected to an induced draft fan 6, whose outlet is open to the outside. The gate 11 is located at the end of the feed pipe 2, approximately 0.5 meters above frame 3, and is a circular hinged structure with a manual handle for cutting off materials when changing packaging containers.

[0025] In the embodiments of this application, such as Figure 1-3 As shown, it also includes a bag hook 7; the packaging container is connected to the frame 3 via the bag hook 7.

[0026] In the embodiments of this application, such as Figure 1-3 As shown, it also includes a collection slot 8; the bottom of the frame 3 is provided with a collection slot 8.

[0027] For example, the collection trough 8 is used to collect ammonium sulfate material that spills during packaging and bag changing, thereby keeping the packaging floor clean and tidy.

[0028] In the embodiments of this application, such as Figure 1-3 As shown, an observation port 9 is also provided on the feed pipe 2.

[0029] For example, the observation port 9 is mainly used to observe the flow of material in the feed pipe 2. When a blockage occurs, it can be cleared through this observation port 9 with the help of tools.

[0030] In the embodiments of this application, such as Figure 1-3 As shown, it also includes a support pipe 10; both ends of the support pipe 10 are mounted on the frame 3; the feed pipe 2 passes through the support pipe 10 and is fixedly connected to the support pipe 10.

[0031] In the embodiments of this application, such as Figure 1-3 As shown, it also includes a slide gate 11; the slide gate 11 is disposed on the feed pipe 2, and the slide gate 11 is located between the frame 3 and the vent hole.

[0032] In the embodiments of this application, such as Figure 1-3 As shown, the material of the collection tank 8 is stainless steel; In the embodiments of this application, such as Figure 1-3 As shown, the collection tank 8 is surrounded by a high dike; the collection tank 8 has an opening.

[0033] For example, a collection trough 8 is provided at the bottom of the frame 3. The collection trough 8 is made of stainless steel and has a dike about 200mm high welded on three sides. One side is open to collect ammonium sulfate products that are scattered during the packaging process, thereby keeping the environment clean.

[0034] This utility model embodiment provides a wet feed discharge system for ammonia desulfurization post-treatment, the working principle of which is as follows: The ammonium sulfate slurry with a certain solid content produced by ammonia desulfurization is separated into solid and liquid components by centrifuge 1, forming a wet ammonium sulfate product with a water content of approximately 3%. The product, relying on centrifugal force and its own gravity, falls directly into a packaging container suspended on a bag hook 7 through the feed pipe 2. Because the feed pipe 2 has a slight positive pressure, the induced draft fan 6 continuously draws air through the exhaust pipe 4, maintaining a slight negative pressure within the feed pipe 2. The extracted dust-laden gas is purified by the dust collector 5 before being discharged, thus ensuring a clean packaging environment. When changing packaging containers, the slide gate 11 is closed to block material flow; after the bag change is completed, the slide gate 11 is reopened to continue feeding. The observation port 9 is used to monitor material flow and clear blockages. The collection trough 8 is used to collect spilled material.

[0035] For example, this application eliminates the need for traditional complex systems such as fluidized bed drying, directly packaging wet materials, thus shortening the production process, effectively improving post-processing output capacity, alleviating corrosion and vibration during operation of the post-processing building, significantly improving the on-site operating environment, reducing workload, and simultaneously reducing system power and steam consumption, thereby lowering operating costs. Furthermore, this system has a simple structure and is easy to operate.

[0036] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A wet feed treatment system for ammonia desulfurization, characterized in that, Includes centrifuge (1), feed pipe (2), frame (3), packaging container, exhaust pipe (4), dust collector (5) and induced draft fan (6); Ammonium sulfate slurry is fed into the inlet of the centrifuge (1), and the outlet of the centrifuge (1) is connected to one end of the feed pipe (2); The packaging container is detachably connected inside the frame (3), and the other end of the feed pipe (2) is connected to the packaging container. The ammonium sulfate slurry can be transported to the packaging container through the feed pipe (2). The feed pipe (2) is provided with an exhaust hole; One end of the exhaust pipe (4) is connected to the exhaust hole, and the other end of the exhaust pipe (4) is connected to the inlet of the dust collector (5). The outlet of the dust collector (5) is connected to the induced draft fan (6), and the induced draft fan (6) can extract the flue gas in the feed pipe (2).

2. The wet feed system after ammonia desulfurization as described in claim 1, characterized in that, It also includes bag hooks (7); The packaging container is connected to the frame (3) by the bag hook (7).

3. The wet feed system after ammonia desulfurization as described in claim 1, characterized in that, It also includes a collection tank (8); The bottom of the frame (3) is provided with the collection slot (8).

4. The wet feed system after ammonia desulfurization as described in claim 1, characterized in that, The feed pipe (2) is also provided with an observation port (9).

5. The wet feed system after ammonia desulfurization as described in claim 1, characterized in that, It also includes a support tube (10); The two ends of the support tube (10) are mounted on the frame (3); The feed pipe (2) passes through the support pipe (10) and is fixedly connected to the support pipe (10).

6. The wet feed system after ammonia desulfurization as described in claim 1, characterized in that, It also includes the slide door (11); The insert door (11) is disposed on the feed pipe (2), and the insert door (11) is located between the frame (3) and the exhaust hole.

7. The wet feed system after ammonia desulfurization as described in claim 3, characterized in that, The material of the collection tank (8) is stainless steel.

8. The wet feed system after ammonia desulfurization as described in claim 3, characterized in that, The collection tank (8) is surrounded by a high cofferdam; The collection tank (8) has an opening.

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