Online injection device for preventing filler hardening in blast furnace gas fine desulfurization system

Abstract

The utility model discloses an online injection device for preventing filler hardening in a blast furnace gas fine desulfurization system, which is characterized in that a reactor consists of a plurality of layers of concentric cylinders and is divided into an outer cylinder, a filler layer outer sieve plate and a filler layer inner sieve plate from outside to inside; the air supply source is connected with the supporting steel pipe; a plurality of supporting steel pipes are arranged on the outer side of the packing layer outer sieve plate and the inner side of the packing layer inner sieve plate in the circumferential direction at intervals and attached to the side walls of the packing layer inner sieve plate and the packing layer outer sieve plate. A plurality of short blowing pipes are vertically arranged on each supporting steel pipe at intervals, penetrate through the side wall of the outer sieve plate of the packing layer or the side wall of the inner sieve plate of the packing layer and extend into the packing layer. The supporting steel pipe is arranged in the filler layer, and the filler layer is inflated, so that the strength of the filler layer can be increased, nitrogen injection can be realized, the operation is simple, the problem of hardening of the filler in the tower body can be effectively solved, and the service life of the filler is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace gas, in particular to an online blowing device for preventing filler from compacting in a blast furnace gas fine desulfurization system. Background Art

[0002] Blast furnace gas hydrolysis conversion plus dry activated carbon fine desulfurization systems typically 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. The packing includes a hydrolysis protective agent, a hydrolysis catalyst, and an activated carbon desulfurizer. During actual operation, the packing layer is prone to compaction, resulting in unsmooth discharge. Utility Model Content

[0003] In response to the above-mentioned defects in the existing technology, an online blowing device is provided for preventing the packing from compacting in the blast furnace gas fine desulfurization system. The device can not only increase the strength of the packing layer, but also realize nitrogen blowing. It is simple to operate, can effectively solve the problem of packing compaction inside the tower body, and extend the service life of the packing.

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

[0005] The online blowing device is used in blast furnace gas fine desulfurization system to prevent packing from compacting. The reactor consists of multiple layers of concentric cylinders, which are divided into outer cylinder, outer sieve plate of packing layer, and inner sieve plate of packing layer from outside to inside.

[0006] The feature is that it also includes an air supply source and a supporting steel pipe, which are connected to each other; a plurality of supporting steel pipes are circumferentially spaced apart on the outer side of the outer sieve plate of the packing layer and the inner side of the inner sieve plate of the packing layer, and the supporting steel pipes are attached to the side walls of the inner and outer sieve plates of the packing layer; a plurality of short air blowing pipes are vertically spaced apart on each supporting steel pipe, and the short air blowing pipes pass through the side wall of the outer sieve plate of the packing layer or the side wall of the inner sieve plate of the packing layer and extend into the packing layer.

[0007] According to the above technical solution, an air blowing head is provided at the end of the air blowing short pipe close to the filler, and the air outlet of the air blowing head is arranged downward.

[0008] According to the above technical solution, the short air blowing pipes on the same supporting steel pipe are arranged at equal intervals, and the interval range is 1.5m to 2.5m.

[0009] According to the above technical solution, the arrangement heights of the short air blowing pipes on different supporting steel pipes are different, and the short air blowing pipes are arranged in a staggered manner in the reactor.

[0010] According to the above technical solution, the short air blowing pipes on different supporting steel pipes are arranged at the same height, and the short air blowing pipes are arranged in several layers in the reactor.

[0011] According to the above technical solution, the reactor includes a top end cover and a bottom end cover, the top end cover is provided with several feed ports, and the bottom end cover is provided with several discharge ports; the supporting steel pipe is arranged on the plane formed by the center line of the feed port and the center line of the reactor.

[0012] According to the above technical solution, four feed ports and four discharge ports are provided in the reactor, and the feed ports and the discharge ports are axially evenly spaced on the top end cover and the bottom end cover of the reactor.

[0013] According to the above technical solution, activated carbon desulfurizer, or hydrolysis protective agent and hydrolysis catalyst are filled between the inner sieve plate of the packing layer and the outer sieve plate of the packing layer.

[0014] According to the above technical solution, an air inlet is provided on the top end cover, and an exhaust port is provided on the top end cover.

[0015] According to the above technical solution, a number of manholes for maintenance are provided on the side wall of the outer cylinder.

[0016] The utility model has the following beneficial effects:

[0017] 1. Multiple support steel pipes are installed circumferentially on the outside of the outer sieve plate of the packing layer and on the inside of the inner sieve plate of the packing layer. These support pipes support the inner and outer sieve plates of the packing layer, preventing bulging or collapse of the sieve plates due to packing compression. In addition, multiple short air blowing pipes are installed on the support pipes, extending through the sieve plate and into the packing. During system operation, air is regularly introduced to spray the internal packing online, effectively preventing packing from clumping. If unloading is difficult, air from the support pipes can also be used to flush the packing, facilitating unloading.

[0018] 2. The air outlet of the blowing head is arranged downward to prevent the filler from clogging the blowing port.

[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 2This is a top view of an embodiment provided by the utility model;

[0023] Figure 3 This is a partial cross-sectional view of the packing layer of an embodiment provided by the present utility model;

[0024] Figure 4 This is a top view of a support tube according to an embodiment of the present invention;

[0025] In the figure, 1. outer cylinder; 2. outer sieve plate of packing layer; 3. inner sieve plate of packing layer; 4. central cavity; 5. outer ring cavity; 6. supporting steel pipe; 7. short air blowing pipe; 8. air blowing head; 9. top end cover; 10. bottom end cover; 11. feed port; 12. discharge port; 13. packing; 14. air inlet; 15. exhaust port; 16. manhole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 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.

[0027] 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.

[0028] 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.

[0029] Reference Figures 1 to 4 As shown, the utility model provides an online blowing device for preventing filler from compacting in a blast furnace gas fine desulfurization system.

[0030] Example 1

[0031] It is composed of multiple layers of concentric cylinders, which are divided into outer cylinder 1, outer sieve plate 2 of packing layer, and inner sieve plate 3 of packing layer from outside to inside;

[0032] The apparatus further includes an air supply source and a supporting steel pipe 6, which are connected to each other. Multiple supporting steel pipes are circumferentially spaced apart on the outer side of the outer sieve plate of the packing layer and the inner side of the inner sieve plate of the packing layer. The supporting steel pipes are attached to the side walls of the inner and outer sieve plates of the packing layer. Multiple short air blowing pipes 7 are vertically spaced apart on each supporting steel pipe. The short air blowing pipes pass through the side walls of the outer sieve plate of the packing layer or the side walls of the inner sieve plate of the packing layer and extend into the packing layer. The air supply source adopts an existing structure, and nitrogen is preferably used as the gas.

[0033] In this embodiment, multiple supporting steel pipes are provided at circumferential intervals on the outer side of the outer sieve plate of the packing layer and the inner side of the inner sieve plate of the packing layer. The inner and outer sieve plates of the packing layer are supported by the supporting steel pipes to prevent the sieve plates from bulging or collapsing due to the squeezing of the packing 13. In addition, multiple short air blowing pipes are provided on the supporting steel pipes. The short air blowing pipes extend through the sieve plate into the packing. During the operation of the system, gas is introduced regularly to spray the internal packing online, effectively preventing the packing from compacting. When unloading is not smooth, the gas from the supporting pipes can also be used to flush the packing down, making unloading easier.

[0034] Example 2

[0035] The structure and principle of Example 2 are similar to those of Example 1, except that an air blowing head 8 is provided at the end of the air blowing short tube close to the filler, and the air outlet of the air blowing head is arranged downward to prevent the filler from clogging the blowing port.

[0036] In Examples 1-2, the short blowing pipes on the same supporting steel pipe are arranged at equal intervals, and the interval range is 1.5m to 2.5m. In the example shown in the figure, 2m is selected.

[0037] Example 3

[0038] The structure and principle of Example 3 are similar to those of Example 1 or 2, except that the air blowing short pipes on different supporting steel pipes are arranged at different heights and are staggered in the reactor. This arrangement can blow the gas into the packing more evenly, resulting in a better flushing effect.

[0039] Example 4

[0040] The structure and principle of Example 4 are similar to those of Examples 1 or 2, except that the short air blowing tubes on different supporting steel pipes are arranged at the same height and are arranged in several layers within the reactor. This arrangement can divide the gas into multiple layers of gas flow, thereby dividing the filler into multiple layers, effectively preventing filler compaction.

[0041] In Examples 1-4, the reactor includes a top end cover 9 and a bottom end cover 10, a plurality of feed ports 11 are provided on the top end cover, and a plurality of discharge ports 12 are provided on the bottom end cover; the supporting steel pipe is provided on the plane formed by the center line of the feed port and the center line of the reactor.

[0042] Preferably, the reactor is provided with four feed ports and four discharge ports, which are equidistantly spaced axially on the top and bottom end caps of the reactor. In other words, eight support steel pipes are provided, and their positions are determined by the positions of the feed ports and discharge ports.

[0043] Activated carbon desulfurizer, or hydrolysis protective agent and hydrolysis catalyst, are filled between the inner and outer sieve plates of the packing layer. The top end cap is provided with an air inlet 14 and an exhaust port 15. Several manholes 16 for maintenance are provided on the sidewall of the outer cylinder.

[0044] 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 blowing device used in blast furnace gas fine desulfurization systems to prevent packing from compacting. The reactor consists of multiple layers of concentric cylinders, which are divided into an outer cylinder, an outer sieve plate of the packing layer, and an inner sieve plate of the packing layer from the outside to the inside. Its characteristics are: It also includes an air supply source and a supporting steel pipe, which are connected to each other; a plurality of supporting steel pipes are circumferentially spaced apart on the outer side of the outer sieve plate of the packing layer and the inner side of the inner sieve plate of the packing layer, and the supporting steel pipes are attached to the side walls of the inner and outer sieve plates of the packing layer; a plurality of short air blowing pipes are vertically spaced apart on each supporting steel pipe, and the short air blowing pipes pass through the side wall of the outer sieve plate of the packing layer or the side wall of the inner sieve plate of the packing layer and extend into the packing layer.

2. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: An air blowing head is provided at the end of the air blowing short pipe close to the filler, and the air outlet of the air blowing head is arranged downward.

3. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The short air blowing pipes on the same supporting steel pipe are arranged at equal intervals, and the interval range is 1.5m to 2.5m.

4. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The arrangement heights of the short air blowing pipes on different supporting steel pipes are different, and the short air blowing pipes are arranged in a staggered manner in the reactor.

5. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The air blowing short pipes on different supporting steel pipes are arranged at the same height, and the air blowing short pipes are arranged in several layers in the reactor.

6. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: The reactor includes a top end cover and a bottom end cover. The top end cover is provided with a plurality of feed ports, and the bottom end cover is provided with a plurality of discharge ports. The supporting steel pipe is arranged on a plane formed by the center line of the feed port and the center line of the reactor.

7. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 6 is characterized in that: Four feed ports and four discharge ports are provided in the reactor, and the feed ports and the discharge ports are axially evenly spaced on the top end cover and the bottom end cover of the reactor.

8. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: An activated carbon desulfurizer, or a hydrolysis protective agent and a hydrolysis catalyst are filled between the inner sieve plate of the packing layer and the outer sieve plate of the packing layer.

9. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1 is characterized in that: An air inlet is provided on the top end cover, and an exhaust port is provided on the top end cover.

10. The online injection device for preventing filler compaction in a blast furnace gas fine desulfurization system according to claim 1, characterized in that: Several manholes for maintenance are provided on the side wall of the outer cylinder.

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