Online loading and unloading anti-hardening system for blast furnace gas fine desulfurization system

Abstract

The utility model discloses an on-line loading and unloading anti-hardening system for a blast furnace gas fine desulfurization system, which comprises a loading unit and an unloading unit which are arranged in a sealed manner, the charging unit is positioned at the top of the reactor and is communicated with all the feeding holes; the unloading unit is located at the bottom of the reactor, and the unloading unit is communicated with all the unloading ports; a first stop valve set is arranged at the communication position between the loading unit and the feeding port, and a second stop valve set is arranged at the communication position between the unloading unit and the unloading port. Through opening and closing of the first switching valve group and the second cut-off valve group, when the system normally operates, gas is not cut off, and through on-line regular loading and unloading of a part of filler and loosening of the filler in the filler layer, the internal hardening phenomenon caused by the fact that the filler does not loosen after long-time working is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace gas, in particular to an online loading and unloading material anti-caking system for a blast furnace gas fine desulfurization system. Background Art

[0002] Blast furnace gas hydrolysis conversion plus dry activated carbon fine desulfurization systems often utilize radial fixed-bed reactors. These reactors consist of multiple concentric cylinders, divided from the outside to the inside into an outer cylinder, an outer sieve plate in the packing layer, and an inner sieve plate in the packing layer. During actual operation, the packing layer, due to prolonged maintenance, can easily become compacted, resulting in unsmooth discharge. Utility Model Content

[0003] In response to the above-mentioned defects in the prior art, an online loading and unloading anti-caking system for blast furnace gas fine desulfurization system is provided. When the system is operating normally, the gas is not cut off. By regularly loading and unloading a part of the filler online, the filler inside the filler layer is loosened to avoid internal caking caused by the filler not loosening after working for a long time.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] An online loading and unloading anti-caking system for a blast furnace gas fine desulfurization system comprises a reactor comprising a multi-layer concentric cylinder, a top end cover, and a bottom end cover. The multi-layer concentric cylinder is divided from the outside to the inside into an outer cylinder, an outer sieve plate of a packing layer, and an inner sieve plate of a packing layer. The top end cover is provided with multiple feed ports, and the bottom end cover is provided with multiple discharge ports. The feed ports and discharge ports are located in the area between the outer sieve plate of the packing layer and the inner sieve plate of the packing layer.

[0006] It is characterized in that it also includes a loading unit and a unloading unit, both of which are sealed; the loading unit is located at the top of the reactor, and the loading unit is connected to all the feed ports; the unloading unit is located at the bottom of the reactor, and the unloading section is connected to all the unloading ports; a first shut-off valve group is provided at the connection between the loading unit and the feed port, and a second shut-off valve group is provided at the connection between the unloading unit and the unloading port.

[0007] According to the above technical solution, a first cutting assembly is provided between the charging unit and the charging port, the top of the first cutting assembly is connected to the bottom of the charging unit, and the bottom of the first cutting assembly is connected to all the charging ports through a main pipe and a plurality of branch pipes connected to the main pipe;

[0008] A second cutting component is provided on the pipeline connected to each discharge port.

[0009] According to the above technical solution, the first shut-off valve group and the second shut-off valve group have the same composition, and both include a pneumatic semi-ball valve, a bellows compensator, and a pneumatic semi-ball valve in sequence.

[0010] According to the above technical solution, the charging unit includes a charging hopper, a first pneumatic hemispherical valve, and a charging bin from top to bottom. The charging hopper and the charging bin are connected by a pipeline, and the first pneumatic hemispherical valve is arranged on the pipeline between the charging hopper and the charging bin; the bottom of the charging bin is connected to the charging port through a pipeline, and a first cutting assembly is arranged on the pipeline between the charging bin and the charging port.

[0011] According to the above technical solution, the unloading unit includes a unloading bin, a second pneumatic hemispherical valve, and a unloading blind plate valve from top to bottom. The unloading bin is fixed at the bottom of the reactor, and the top of the unloading bin is connected to each unloading port through an independent pipeline. The second cutting assembly is arranged on the independent pipeline connection; a discharge pipe is vertically provided at the bottom of the unloading bin, and the second pneumatic hemispherical valve and the unloading blind plate valve are arranged on the discharge pipe from top to bottom, and the external unloading carrier is docked at the bottom of the discharge pipe.

[0012] According to the above technical solution, the filler slides vertically downward or obliquely downward in the pipe of the loading unit and the pipe of the unloading unit.

[0013] According to the above technical solution, nitrogen purge heads and vent pipes are provided in the loading bin and the unloading bin, and valves are provided on the purge heads and the vent pipes; the nitrogen purge heads are connected to an external gas source.

[0014] The utility model has the following beneficial effects:

[0015] 1. Pre-fill the charging unit with a sufficient amount of filler. During normal operation of the reactor, first open the second shut-off valve group and close the first shut-off valve group. The filler between the outer and inner sieve plates of the packing layer will fall into the unloading unit under the action of gravity. At this time, the filler between the outer and inner sieve plates of the packing layer will shift under the action of gravity, thus preventing the filler from compacting. Then close the second shut-off valve group and open the first shut-off valve group. The filler in the charging unit will be filled between the outer and inner sieve plates of the packing layer under the action of gravity, completing the filler replenishment.

[0016] Based on the above operation, by opening and closing the first switching valve group and the second shut-off valve group, the gas is not cut off when the system is operating normally. By regularly loading and unloading a part of the packing online, the packing inside the packing layer is loosened to avoid internal compaction caused by the packing not loosening after working for a long time.

[0017] 2. The purpose of setting up a bellows compensator is that the reactor is in a high-temperature operating state. After the filler enters the loading and unloading pipe, it will cause this part of the pipe to expand and contract due to heat and cold, which may cause gas leakage. Reasonable setting of the bellows compensator can effectively compensate for the expansion and contraction problem of the pipe and improve system safety.

[0018] 3. After the unloading unit or the loading unit completes the loading and unloading operation, open the valves on the purge head and the vent pipe, and blow nitrogen into the loading bin or the unloading bin through an external gas source to complete the purge of the gas in the loading bin and the unloading bin, thereby avoiding safety hazards caused by the escaped gas.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a structural schematic diagram of an embodiment provided by the utility model;

[0022] Figure 2 This is a schematic structural diagram of a charging unit according to an embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of a discharge unit according to an embodiment of the present invention;

[0024] In the figure, 1. top end cover; 2. bottom end cover; 3. outer cylinder; 4. outer sieve plate of packing layer; 5. inner sieve plate of packing layer; 6. feed port; 7. discharge port; 8. gas inlet; 9. gas outlet; 10. charging unit; 10-1. charging hopper; 10-2. first pneumatic hemispherical valve; 10-3. charging bin; 11. discharge unit; 11-1. discharge bin; 11-2. second pneumatic hemispherical valve; 11-3. discharge blind plate valve; 12a. first shut-off valve group; 12b. second shut-off valve group; 12-1. pneumatic hemispherical valve; 12-2. bellows compensator; 13. nitrogen purge head; 14. vent pipe. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0026] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Reference Figures 1 to 3 As shown, the utility model provides an online loading and unloading material anti-caking system for a blast furnace gas fine desulfurization system.

[0029] Example 1

[0030] The reactor includes multiple layers of concentric cylinders, a top end cover 1 and a bottom end cover 2. The multiple layers of concentric cylinders are divided into an outer cylinder 3, an outer sieve plate 4 of the packing layer, and an inner sieve plate 5 of the packing layer from the outside to the inside; a plurality of feed ports 6 are provided on the top end cover, and a plurality of discharge ports 7 are provided on the bottom end cover. The feed ports and discharge ports are located in the area between the outer sieve plate of the packing layer and the inner sieve plate of the packing layer; as shown in the figure, it also includes a gas inlet 8 and a gas outlet 9.

[0031] It also includes a loading unit 10 and a unloading unit 11, both of which are sealed; the loading unit is located at the top of the reactor and is connected to all feed ports; the unloading unit is located at the bottom of the reactor, and the unloading section is connected to all unloading ports; a first shut-off valve group 12a is provided at the connection between the loading unit and the feed port, and a second shut-off valve group 12b is provided at the connection between the unloading unit and the unloading port.

[0032] In this embodiment, a sufficient amount of filler is pre-filled into the loading unit. During normal operation of the reactor, the second shut-off valve group is first opened and the first shut-off valve group is closed. The filler located between the outer and inner sieve plates of the packing layer falls into the unloading unit under the action of gravity. At this time, the filler between the outer and inner sieve plates of the packing layer will be displaced under the action of gravity, thereby preventing the filler from compacting. Subsequently, the second shut-off valve group is closed and the first shut-off valve group is opened. The filler in the loading unit is filled between the outer and inner sieve plates of the packing layer under the action of gravity, completing the replenishment of the filler.

[0033] Based on the above operation, by opening and closing the first switching valve group and the second shut-off valve group, the gas is not cut off when the system is operating normally. By regularly loading and unloading a part of the packing online, the packing inside the packing layer is loosened to avoid internal compaction caused by the packing not loosening after working for a long time.

[0034] Example 2

[0035] The structure and principle of Example 2 are similar to those of Example 1, except that a preferred arrangement of the first and second cutting assemblies is provided. This preferred arrangement employs "one cutting assembly for all loading ports" and "each cutting assembly for one discharge port." Other arrangements may also be employed, such as "each cutting assembly for one loading port" and "one cutting assembly for all discharge ports," or "one cutting assembly for multiple loading ports" and "one cutting assembly for multiple discharge ports."

[0036] A first cutting assembly is arranged between the loading unit and the loading port, the top of the first cutting assembly is connected to the bottom of the loading unit, and the bottom of the first cutting assembly is connected to all the loading ports through the main pipeline and multiple branch pipes connected to the main pipeline; a second cutting assembly is provided on the pipeline connected to each unloading port.

[0037] In embodiment 2, a preferred structural form of the cutting assembly is also provided. Other structural forms of the cutting assembly can also be used, as long as it can ensure that the unloading unit and the reactor, as well as the loading unit and the reactor can be cut off or connected according to needs.

[0038] The first and second shut-off valve groups are identical, each consisting of a pneumatic semi-ball valve 12-1, a bellows compensator 12-2, and a pneumatic semi-ball valve 12-1. The pneumatic semi-ball valve is used to prevent packing from clogging the valve, facilitating later valve opening and closing. The bellows compensator is installed because the reactor operates at high temperatures. When packing enters the loading and unloading pipes, this portion of the pipe expands and contracts due to heat, potentially causing gas leaks and gaps in the packing. Properly installing the bellows compensator can fill these gaps, effectively compensating for pipe expansion and contraction, and improving system safety.

[0039] Example 3

[0040] The structure and principle of Example 3 are similar to those of Examples 1 and 2, except that a preferred structural form of the loading unit and the unloading unit is provided.

[0041] The charging unit includes a charging hopper 10-1, a first pneumatic hemispherical valve 10-2, and a charging bin 10-3 from top to bottom. The charging hopper and the charging bin are connected by a pipeline. The first pneumatic hemispherical valve is arranged on the pipeline between the charging hopper and the charging bin. The bottom of the charging bin is connected to the charging port through a pipeline, and a first cutting assembly is arranged on the pipeline between the charging bin and the charging port.

[0042] The unloading unit includes a unloading bin 11-1, a second pneumatic hemispherical valve 11-2, and a unloading blind plate valve 11-3 from top to bottom. The unloading bin is fixed at the bottom of the reactor. The top of the unloading bin is connected to each unloading port through an independent pipeline. The second cutting assembly is arranged on the independent pipeline connection; a discharge pipe is vertically provided at the bottom of the unloading bin, and the second pneumatic hemispherical valve and the unloading blind plate valve are arranged on the discharge pipe from top to bottom. The external unloading carrier is docked at the bottom of the discharge pipe.

[0043] Preferably, the filler slides vertically downward or obliquely downward in the pipe of the loading unit and the pipe of the unloading unit.

[0044] In Example 3, since this system has the operation of loading and unloading fillers online, during the loading and unloading process, coal gas will escape into the loading bin and the unloading bin. In order to avoid potential safety hazards, during the loading and unloading process, the coal gas in the loading bin and the unloading bin needs to be purged first. A nitrogen purge head 13 and a vent pipe 14 are provided in the loading bin and the unloading bin, and valves are provided on the purge head and the vent pipe; the nitrogen purge head is connected to an external air source. After the unloading unit or the loading unit completes the loading and unloading operation, the valves on the purge head and the vent pipe are opened, and nitrogen is blown into the loading bin or the unloading bin through the external air source to complete the purging of the coal gas in the loading bin and the unloading bin.

[0045] The working principle of this utility model:

[0046] The first step is to pack the stuffing into ton bags and lift them into the loading hopper by crane or electric hoist; then, open the first pneumatic semi-ball valve of the loading unit, load the stuffing into the hopper through the filling device in the loading hopper, and close the first pneumatic semi-ball valve.

[0047] The second step is to open the second shutoff assembly in the discharge unit. The reactor's filler flows into the discharge bin under the action of gravity. When the discharge reaches the set value, the second shutoff assembly is closed. Then, the discharge bin's vent pipe and the valve of the nitrogen purge head are opened to blow nitrogen into the discharge bin, which then blows the escaping coal gas into the atmosphere.

[0048] The third step is to park the unloading carrier at the bottom of the unloading unit and open the second pneumatic semi-ball valve and the unloading blind plate valve to complete the unloading operation.

[0049] In the fourth step, the first shut-off assembly in the charging unit is opened, and the filler in the charging silo flows into the reactor under the action of gravity. After the reactor is filled, the first shut-off assembly is closed. Then, the valves of the charging silo's vent pipe and nitrogen purge head are opened to blow nitrogen into the charging silo, which blows the escaping coal gas into the atmosphere.

[0050] The fifth step is to open the first pneumatic semi-ball valve of the charging unit, fill the filler into the charging bin from the filling device in the charging hopper, close the first pneumatic semi-ball valve, and repeat the above operation process after a certain time according to the procedure.

[0051] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An online loading and unloading system for preventing compaction in blast furnace gas fine desulfurization systems. The reactor comprises a multi-layer concentric cylinder, a top end cover, and a bottom end cover. The multi-layer concentric cylinder is divided from the outside to the inside into an outer cylinder, an outer sieve plate of the packing layer, and an inner sieve plate of the packing layer. The top end cover is provided with multiple feed ports, and the bottom end cover is provided with multiple discharge ports. The feed ports and discharge ports are located in the area between the outer sieve plate of the packing layer and the inner sieve plate of the packing layer. Its characteristics are: It also includes a loading unit and a unloading unit, both of which are sealed; the loading unit is located at the top of the reactor and is connected to all feed ports; the unloading unit is located at the bottom of the reactor and is connected to all unloading ports; a first shut-off valve group is provided at the connection between the loading unit and the feed port, and a second shut-off valve group is provided at the connection between the unloading unit and the unloading port.

2. The online loading and unloading material anti-caking system for blast furnace gas fine desulfurization system according to claim 1 is characterized in that: A first cutting assembly is provided between the charging unit and the charging port, the top of the first cutting assembly is connected to the bottom of the charging unit, and the bottom of the first cutting assembly is connected to all the charging ports through a main pipe and a plurality of branch pipes connected to the main pipe; A second cutting component is provided on the pipeline connected to each discharge port.

3. The online material loading and unloading anti-caking system for blast furnace gas fine desulfurization system according to claim 1 or 2, characterized in that: The first shut-off valve group and the second shut-off valve group have the same composition, and both include a pneumatic semi-ball valve, a bellows compensator, and a pneumatic semi-ball valve in sequence.

4. The online material loading and unloading anti-caking system for blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The charging unit includes a charging hopper, a first pneumatic hemispherical valve, and a charging bin from top to bottom. The charging hopper and the charging bin are connected by a pipeline. The first pneumatic hemispherical valve is arranged on the pipeline between the charging hopper and the charging bin. The bottom of the charging bin is connected to the charging port through a pipeline, and a first cutting assembly is arranged on the pipeline between the charging bin and the charging port.

5. The online material loading and unloading anti-caking system for blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The unloading unit includes a unloading bin, a second pneumatic hemispherical valve, and a unloading blind plate valve from top to bottom. The unloading bin is fixed at the bottom of the reactor. The top of the unloading bin is connected to each unloading port through an independent pipeline. The second cutting assembly is arranged on the independent pipeline connection; a discharge pipe is vertically provided at the bottom of the unloading bin, and the second pneumatic hemispherical valve and the unloading blind plate valve are arranged on the discharge pipe from top to bottom. The external unloading carrier is docked at the bottom of the discharge pipe.

6. The online material loading and unloading anti-caking system for blast furnace gas fine desulfurization system according to claim 4 or 5, characterized in that: The filler slides vertically downward or obliquely downward in the pipes of the loading unit and the unloading unit.

7. The online material loading and unloading anti-caking system for blast furnace gas fine desulfurization system according to claim 4 or 5, characterized in that: Nitrogen purge heads and vent pipes are provided in the loading bin and the unloading bin, and valves are provided on the purge heads and vent pipes; the nitrogen purge heads are connected to an external gas source.

Images