A denitrification steel frame for sintering machine
By following the top-down arrangement in metal smelting equipment, flue gas heat exchanger, denitrification reactor and heating furnace, combined with the cantilever maintenance platform, the problem of large equipment height and steel use under the traditional layout is solved. It realizes space and steel savings, while improving equipment efficiency.
Patent Information
- Application Number
- CN201911334799.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-12-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2039-12-23
AI Technical Summary
When operating and maintaining large denitrification equipment in narrow spaces, the traditional detached layout method leads to excessive height of equipment and large platform area, resulting in excessive steel use and difficult to effectively save space and steel.
The flue gas heat exchanger, denitrification reactor and heating furnace are arranged from top to bottom. The flue gas heat exchanger is installed as the basis. The denitrition reactor is installed above it, and the flue and heating furnace are installed on the left and right. Higher than the flue gas heat exchanger, multiple cantilever maintenance platforms are set up to reduce the cross-sectional area and usage of the steel frame.
The equipment layout is realized under the conditions of satisfying the land occupation of flue gas heat exchangers, shortening pipeline connections, improving the flue gas temperature increase and denitrification effect, and saving construction land and steel consumption to the greatest extent.
Smart Images
Figure CN110960984B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of metal smelting equipment, in particular to a denitrification steel frame for a sintering machine. Background Art
[0002] The conventional domestic denitrification steel frame is to separate the flue gas heat exchanger, flue gas heating furnace and the main steel frame of the denitrification reactor from the flat layout, and the main steel frame columns of the denitrification reactor are extended to the top floor of the denitrification reactor. The desulfurization and denitrification projects in steel plants are basically renovation projects. In a small space, it is necessary to realize the normal operation, maintenance and overhaul of multiple large equipment, which is difficult to put down according to the traditional separation and flat layout method; the main steel frame columns of the denitrification reactor are extended to the top floor of the denitrification reactor, and then the cantilevered platform is extended from the main steel frame beams for maintenance and installation. The calculated height of this layout is too high, and the large platform area leads to a large amount of steel consumption. Summary of the invention
[0003] In order to reduce the construction land, the present invention provides a sintering machine denitration steel frame, in which a denitration catalyst module and a flue gas heat exchanger are arranged from top to bottom. This arrangement can be realized only if the site is sufficient for the flue gas heat exchanger, and the pipeline connection is short, the flue gas heating effect is good, and the denitration effect is good.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a sintering machine denitrification steel frame, including a flue gas heat exchanger mounting steel frame, a denitrification reactor mounting steel frame and a flue and heating furnace mounting steel frame, the denitrification reactor mounting steel frame is located above the flue gas heat exchanger mounting steel frame, the flue and heating furnace mounting steel frame and the flue gas heat exchanger mounting steel frame are arranged on the left and right, the flue and heating furnace mounting steel frame is higher than the flue gas heat exchanger mounting steel frame, the cross-sectional area of the flue and heating furnace mounting steel frame is smaller than the cross-sectional area of the flue gas heat exchanger mounting steel frame, and a plurality of installation and maintenance cantilever platforms are arranged around the denitrification reactor mounting steel frame, and the plurality of installation and maintenance cantilever platforms are arranged at intervals in the vertical direction.
[0005] The flue gas heat exchanger installation steel frame includes four main steel columns around it, the upper ends of the four main steel columns are connected through the upper supporting main steel beam frame, and the middle parts of the four main steel columns are connected through the middle supporting main steel beam.
[0006] A plurality of upper connecting beams are arranged between the upper supporting main steel beam frame and the middle supporting main steel beam, and a plurality of lower connecting beams are arranged between the lower end of the flue gas heat exchanger mounting steel frame and the middle supporting main steel beam.
[0007] An annular working platform is provided at the top of the flue gas heat exchanger installation steel frame, the upper connecting beam is connected and fixed to the main steel column, and the lower connecting beam is connected and fixed to the main steel column.
[0008] The upper supporting main steel beam frame includes an outer rectangular main beam frame and an inner rectangular main beam frame, the outer rectangular main beam frame and the inner rectangular main beam frame are connected by a top beam, and the lower end of the denitrification reactor mounting steel frame is connected to the inner rectangular main beam frame.
[0009] In the spatial rectangular coordinate system with X, Y and Z axes as coordinate axes, the denitrification reactor installation steel frame includes a reactor installation column, a reactor installation first beam and a reactor installation second beam. The reactor installation column is parallel to the Z axis, the reactor installation first beam is parallel to the X axis, and the reactor installation second beam is parallel to the Y axis.
[0010] Metal plates are arranged around the denitration reactor installation steel frame. The reactor installation columns, the reactor installation first beam and the reactor installation second beam divide the denitration reactor installation steel frame into multiple denitration catalyst module installation units arranged along the X, Y and Z axis directions.
[0011] The flue and heating furnace installation steel frame is surrounded by four flue and heating furnace installation main steel columns, and the four flue and heating furnace installation main steel columns are connected and fixed by flue and heating furnace installation cross beams.
[0012] The two main steel columns of the flue and heating furnace installation steel frame are shared by the two main steel columns of the flue and heating furnace installation steel frame and the flue gas heat exchanger installation steel frame. A connecting diagonal rod is provided between the flue and heating furnace installation cross beams.
[0013] The beneficial effect of the present invention is that the denitration catalyst module and the flue gas heat exchanger are arranged from top to bottom in the denitration steel frame of the sintering machine. This arrangement can be realized only if the site is sufficient for the flue gas heat exchanger, and the pipeline connection is short, the flue gas heating effect is good, and the denitration effect is good. The denitration steel frame of the sintering machine and the denitration equipment of the sintering machine can save construction land and steel consumption to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0015] Figure 1 It is a front view of the denitration steel frame of the sintering machine according to the present invention.
[0016] Figure 2 The steel frame for installing the flue gas heat exchanger and the steel frame for installing the denitrification reactor are along Figure 1 Schematic diagram of direction A.
[0017] Figure 3 The steel frame for installing the flue gas heat exchanger and the steel frame for installing the flue and heating furnace are Figure 1 Schematic diagram of the B direction.
[0018] Figure 4 The denitrification reactor is installed along the steel frame Figure 1 Schematic diagram of the B direction.
[0019] 1. Install the steel frame for flue gas heat exchanger; 2. Install the steel frame for denitration reactor; 3. Install the steel frame for flue and heating furnace;
[0020] 11. Main steel column; 12. Upper supporting main steel beam frame; 13. Middle supporting main steel beam; 14. Upper connecting beam; 15. Lower connecting beam; 16. Annular working platform; 17. Outer rectangular main beam frame; 18. Inner rectangular main beam frame; 19. Top beam;
[0021] 21. Install the reactor column; 22. Install the first beam in the reactor; 23. Install the second beam in the reactor; 24. Install the overhanging platform for maintenance;
[0022] 31. Install the main steel columns for the flue and heating furnace; 32. Install the cross beams for the flue and heating furnace; 33. Connect the diagonal rods; 34. Steel structure stairs. DETAILED DESCRIPTION
[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0024] A sintering machine denitration steel frame comprises a flue gas heat exchanger mounting steel frame 1, a denitration reactor mounting steel frame 2 and a flue and heating furnace mounting steel frame 3, the denitration reactor mounting steel frame 2 is located above the flue gas heat exchanger mounting steel frame 1, the flue and heating furnace mounting steel frame 3 is arranged on the left and right of the flue gas heat exchanger mounting steel frame 1, the flue and heating furnace mounting steel frame 3 is higher than the flue gas heat exchanger mounting steel frame 1, the cross-sectional area of the flue and heating furnace mounting steel frame 3 is smaller than the cross-sectional area of the flue gas heat exchanger mounting steel frame 1, and a plurality of installation and maintenance cantilever platforms 24 are arranged around the denitration reactor mounting steel frame 2, and the plurality of installation and maintenance cantilever platforms 24 are arranged at intervals in the vertical direction, such as Figure 1 shown.
[0025] In this embodiment, the four main steel columns 11 are arranged in a rectangular shape around the steel frame 1 for mounting the flue gas heat exchanger. The four main steel columns 11 are located at the four corners of the rectangle. The upper ends of the four main steel columns 11 are connected and fixed by an upper supporting main steel beam frame 12, and the middle parts of the four main steel columns 11 are connected and fixed by a middle supporting main steel beam 13. Figure 1 and Figure 2 shown.
[0026] In this embodiment, a plurality of upper connecting beams 14 are provided between the upper supporting main steel beam frame 12 and the middle supporting main steel beam 13, and the plurality of upper connecting beams 14 are divided into two upper and lower rows. A plurality of lower connecting beams 15 are provided between the lower end of the flue gas heat exchanger mounting steel frame 1 and the middle supporting main steel beam 13, and the plurality of lower connecting beams 15 are divided into two upper and lower rows.
[0027] In this embodiment, an annular working platform 16 is provided on the top of the flue gas heat exchanger installation steel frame 1, and the two ends of the upper connecting beam 14 are connected and fixed to the main steel column 11, and the two ends of the lower connecting beam 15 are connected and fixed to the main steel column 11. The upper supporting main steel beam frame 12 includes an outer rectangular main beam frame 17 and an inner rectangular main beam frame 18. The outer rectangular main beam frame 17 is connected to the outer edge of the annular working platform 16, and the inner rectangular main beam frame 18 is connected to the inner edge of the annular working platform 16. The outer rectangular main beam frame 17 and the inner rectangular main beam frame 18 are connected through a top beam 19. The lower end of the denitrification reactor installation steel frame 2 is connected to the inner rectangular main beam frame 18. The annular working platform 16 can be a metal mesh or a metal plate, such as Figure 3 shown.
[0028] In this embodiment, in a spatial rectangular coordinate system with X, Y, and Z axes as coordinate axes, the denitration reactor installation steel frame 2 is similar to a lattice structure or can also be called a magic structure. The denitration reactor installation steel frame 2 contains a plurality of reactor installation columns 21, a plurality of reactor installation first beams 22, and a plurality of reactor installation second beams 23. The plurality of reactor installation columns 21 are parallel to the Z axis, the plurality of reactor installation first beams 22 are parallel to the X axis, and the plurality of reactor installation second beams 23 are parallel to the Y axis. Figure 4 shown.
[0029] In this embodiment, the reactor installation column 21, the reactor installation first beam 22 and the reactor installation second beam 23 divide the interior of the denitration reactor installation steel frame 2 into a plurality of denitration catalyst module installation units arranged along the X, Y and Z axis directions. Metal plates are provided around the denitration reactor installation steel frame 2, and the metal plates form a circumferentially closed metal vertical cylinder, the upper end of the metal vertical cylinder is flush with the upper end of the denitration reactor installation steel frame 2, and the lower end of the metal vertical cylinder is flush with the lower end of the denitration reactor installation steel frame 2, and the installation and maintenance cantilever platform 24 is located outside the metal vertical cylinder.
[0030] In this embodiment, the flue and heating furnace installation steel frame 3 has four flue and heating furnace installation main steel columns 31 around it, and the four flue and heating furnace installation main steel columns 31 are connected and fixed by flue and heating furnace installation cross beams 32. In the vertical direction, the flue and heating furnace installation steel frame 3 has multiple rows of flue and heating furnace installation cross beams 32, such as Figure 1A steel structure staircase 34 is also provided in the flue and heating furnace installation steel frame 3. The steel structure staircase 34 is located at the front side or the rear side of the heating furnace installation steel frame 3. Figure 3 shown.
[0031] In this embodiment, the two main steel columns 31 of the flue and heating furnace installation steel frame 3 are shared with the two main steel columns 11 of the flue gas heat exchanger installation steel frame 1. Figure 3 As shown, the two main steel columns 31 for flue and heating furnace installation on the right side of the flue and heating furnace installation steel frame 3 are shared with the two main steel columns 11 on the left side of the flue gas heat exchanger installation steel frame 1. A connecting diagonal rod 33 is provided between the flue and heating furnace installation cross beams 32.
[0032] In addition, since the flue gas heat exchanger has a large load, multiple legs need to be set up around it for support. The flue gas heat exchanger equipment itself is a cylindrical structure. Therefore, except for the main steel columns 11 at the four corners, the columns in the middle of the span are blocked by the main body and cannot rise to the upper denitrification reactor platform to provide support for the denitrification reactor installation steel frame 2. Only the main steel columns 11 at the four corners extend to the denitrification reactor installation steel frame 2. The denitrification reactor installation steel frame 2 is used to support the denitrification catalyst module. The denitrification catalyst module needs to be installed, replaced, and repaired, so it is necessary to set up an installation and maintenance cantilever platform 24 around the denitrification reactor steel frame. Since the flue gas heat exchanger located at the bottom is relatively large, the upper denitrification reactor installation steel frame 2 occupies a small area. If, according to conventional practices, the steel columns at the four corners of the steel frame body are directly raised to the top of the denitrification reactor steel frame, and a multi-layer platform is made in the middle to connect with the denitrification steel frame body, it is inevitable that the amount of steel used for a lot of columns and steel platforms will increase.
[0033] In the present invention, the columns of the flue gas heat exchanger installation steel frame 1 are only raised to the bottom of the column foot of the denitration reactor installation steel frame 2, and are only used for the bottom steel beam of the denitration reactor installation steel frame 2. The installation and maintenance cantilever platform 24 for reactor module installation and maintenance is cantilevered from the denitration reactor installation steel frame 2 itself to the surroundings, and the width of the installation and maintenance cantilever platform 24 is only sufficient for use, thereby saving a large amount of steel columns and steel platforms without affecting use, such as Figures 1 to 4 shown.
[0034] In order to facilitate understanding and description, the present invention adopts absolute position relationship for expression, wherein the directional word "up" means Figure 1 The upper direction of Figure 1 The lower direction of the "left" indicates Figure 1 The left direction of Figure 1 The right direction of the Figure 1 and point to Figure 1 The direction of the outside of the paper, "back" means perpendicular to Figure 1 and point to Figure 1The direction of the inside of the paper. The present invention is described using the reader's observation angle, but the above-mentioned directional words cannot be understood or interpreted as limiting the protection scope of the present invention.
[0035] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with technical features and technical solutions, and with technical solutions.
Claims
1. A sintering machine denitrification steel frame, characterized in that: The sintering machine denitration steel frame comprises a flue gas heat exchanger mounting steel frame (1), a denitration reactor mounting steel frame (2) and a flue and heating furnace mounting steel frame (3), wherein the denitration reactor mounting steel frame (2) is located above the flue gas heat exchanger mounting steel frame (1), the flue and heating furnace mounting steel frame (3) and the flue gas heat exchanger mounting steel frame (1) are arranged on the left and right, the flue and heating furnace mounting steel frame (3) is higher than the flue gas heat exchanger mounting steel frame (1), the cross-sectional area of the flue and heating furnace mounting steel frame (3) is smaller than the cross-sectional area of the flue gas heat exchanger mounting steel frame (1), and a plurality of mounting and maintenance cantilever platforms (24) are arranged around the denitration reactor mounting steel frame (2), and the plurality of mounting and maintenance cantilever platforms (24) are arranged at intervals in the vertical direction; The flue gas heat exchanger installation steel frame (1) comprises four main steel columns (11) on its periphery, the upper ends of the four main steel columns (11) are connected via an upper supporting main steel beam frame (12), and the middle parts of the four main steel columns (11) are connected via a middle supporting main steel beam (13); The upper supporting main steel cross beam frame (12) comprises an outer rectangular main beam frame (17) and an inner rectangular main beam frame (18), the outer rectangular main beam frame (17) and the inner rectangular main beam frame (18) are connected via a top cross beam (19), and the lower end of the denitration reactor mounting steel frame (2) is connected to the inner rectangular main beam frame (18); An annular working platform (16) is provided at the top of the flue gas heat exchanger mounting steel frame (1), an outer rectangular main beam frame (17) is correspondingly connected to the outer edge of the annular working platform (16), and an inner rectangular main beam frame (18) is correspondingly connected to the inner edge of the annular working platform (16), and the annular working platform (16) is a metal mesh or a metal plate.
2. The sintering machine denitrification steel frame according to claim 1, characterized in that: A plurality of upper connecting crossbeams (14) are provided between the upper supporting main steel crossbeam frame (12) and the middle supporting main steel crossbeam (13), and a plurality of lower connecting crossbeams (15) are provided between the lower end of the flue gas heat exchanger mounting steel frame (1) and the middle supporting main steel crossbeam (13).
3. The denitrification steel frame for sintering machine according to claim 2, characterized in that: The upper connecting cross beam (14) is connected and fixed to the main steel column (11), and the lower connecting cross beam (15) is also connected and fixed to the main steel column (11).
4. The denitrification steel frame for sintering machine according to claim 1, characterized in that: In a spatial rectangular coordinate system with the X, Y, and Z axes as coordinate axes, the denitration reactor installation steel frame (2) includes a reactor installation column (21), a reactor installation first beam (22), and a reactor installation second beam (23), wherein the reactor installation column (21) is parallel to the Z axis, the reactor installation first beam (22) is parallel to the X axis, and the reactor installation second beam (23) is parallel to the Y axis.
5. The denitrification steel frame for sintering machine according to claim 4, characterized in that: Metal plates are arranged around the denitration reactor installation steel frame (2), and the reactor installation uprights (21), the reactor installation first cross beam (22), and the reactor installation second cross beam (23) divide the denitration reactor installation steel frame (2) into a plurality of denitration catalyst module installation units arranged along the X, Y, and Z axis directions.
6. The denitrification steel frame for sintering machine according to claim 1, characterized in that: The flue and heating furnace installation steel frame (3) has four flue and heating furnace installation main steel columns (31) around it, and the four flue and heating furnace installation main steel columns (31) are connected and fixed by flue and heating furnace installation cross beams (32).
7. The denitrification steel frame for sintering machine according to claim 6, characterized in that: The two flue and heating furnace installation main steel columns (31) of the flue and heating furnace installation steel frame (3) are shared with the two main steel columns (11) of the flue gas heat exchanger installation steel frame (1), and a connecting diagonal rod (33) is provided between the flue and heating furnace installation cross beam (32).