阅读说明：本技术 一种热膨胀自吸收大孔分布板 (Thermal expansion self-absorption large-hole distribution plate ) 是由 唐聚园 邵松 于 2020-06-22 设计创作，主要内容包括：本发明涉及一种热膨胀自吸收大孔分布板,包括分布板本体,分布板本体由多个依次环套的环形板构成,相邻两个环形板之间具有间隙并通过膨胀环连接,环形板和膨胀环上均设置有多个耐磨复合短管。本发明通过在分布板上设置膨胀环,能够吸收板体因升温而产生的膨胀变形,避免耐磨复合短管受到挤压而出现损坏。(The invention relates to a thermal expansion self-absorption large-hole distribution plate which comprises a distribution plate body, wherein the distribution plate body is formed by a plurality of annular plates which are sequentially sleeved, a gap is formed between every two adjacent annular plates and the annular plates are connected through an expansion ring, and a plurality of wear-resistant composite short pipes are arranged on the annular plates and the expansion ring. According to the invention, the expansion ring is arranged on the distribution plate, so that the expansion deformation of the plate body caused by temperature rise can be absorbed, and the abrasion-resistant composite short pipe is prevented from being damaged due to extrusion.)

1. The utility model provides a thermal energy self absorption macropore distributing plate, includes the distributing plate body, its characterized in that: the distribution plate body comprises a plurality of annular plates (1) which are sequentially sleeved, a gap is arranged between every two adjacent annular plates (1) and the annular plates are connected through expansion rings (2), and a plurality of wear-resistant composite short pipes (3) are arranged on the annular plates (1) and the expansion rings (2).

2. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the cross section of the expansion ring (2) is n-shaped, and two side edges of the expansion ring (2) are respectively connected with the inner ring of the outer ring annular plate (1) and the outer ring of the inner ring annular plate (1) in the two adjacent annular plates (1).

3. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the wear-resistant composite short pipe (3) is a ceramic short pipe.

4. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the diameter of the wear-resistant composite short pipe (3) on the annular plate (1) is larger than that of the wear-resistant composite short pipe (3) on the expansion ring (2).

5. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the wear-resistant composite short pipe (3) on the annular plate (1) is consistent with the wear-resistant composite short pipe (3) on the expansion ring (2) in diameter.

6. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the material of the expansion ring (2) is consistent with that of the annular plate (1).

7. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the plurality of annular plates (1) are located on the same horizontal plane.

8. The thermally expanded self-absorbing large orifice distribution plate of claim 1, wherein: the outer circumference of the outermost ring of annular plates (1) is also provided with a connecting plate extending downwards.

Technical Field

The invention relates to the technical field of oil refining equipment, in particular to a thermal expansion self-absorption large-hole distribution plate.

Background

In the catalytic cracking device widely used at present, the most important equipment is the reactor and the regenerator, and the large-hole distribution plate is the core component of the reactor and the regenerator, so that the safety and reliability directly determine whether the catalytic cracking process can be smoothly carried out. The function of the large-hole distribution plate is to ensure that the catalyst in the second regenerator from bottom to top is distributed more uniformly and is contacted with air uniformly to be burnt, and the activity is recovered better.

The conventional large-hole distribution plate comprises a plate body and a plurality of wear-resistant composite short pipes uniformly distributed on the plate body, the temperature of a medium in the regenerator can reach 700 ℃ in the operation process of the regenerator, the plate body of the large-hole distribution plate can generate larger expansion amount in the radial direction at the temperature, the regenerator shell is coated with a heat insulation lining, the temperature is generally about 150 ℃, the radial expansion of the regenerator shell is relatively smaller, the thermal expansion difference of the regenerator shell and the large-hole distribution plate is larger, the expansion thermal deformation of the plate body of the large-hole distribution plate generated by temperature rise is restrained by the regenerator shell and cannot be released, and strain release occurs in a plane due to the large number of holes arranged on the plate body, namely, an opening hole is deformed, so that the assembly size is changed, the wear-resistant composite short pipes are extruded, and cracks or even breaks finally occur. In order to solve the problem of thermal expansion between the large-hole distribution plate and the regenerator shell, the large-hole distribution plate is provided with a longer skirt, and in order to ensure that the distribution plate has enough strength, the existing distribution plate is generally provided with a plurality of reinforcing ribs in the radial direction and the annular direction of the upper end surface of a plate body, and the plate body is also thicker.

Disclosure of Invention

The invention aims to solve the technical problems and provide a thermal expansion self-absorption large-hole distribution plate, which is provided with an expansion ring, so that the expansion deformation of a plate body caused by temperature rise can be absorbed, and the abrasion-resistant composite short pipe is prevented from being damaged due to extrusion.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a thermal energy self absorption macropore distributing plate, includes the distributing plate body, and the distributing plate body comprises a plurality of annular plates that loop was overlapped in proper order, has the clearance between two adjacent annular plates and connects through the expansion ring, all is provided with a plurality of wear-resisting compound nozzle stub on annular plate and the expansion ring.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the cross section of the expansion ring is n-shaped, and two side edges of the expansion ring are respectively connected with the inner ring of the outer ring annular plate in the two adjacent annular plates and the outer ring of the inner ring annular plate.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the wear-resistant composite short pipe is a ceramic short pipe.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the diameter of the wear-resistant composite short pipe on the annular plate is larger than that of the wear-resistant composite short pipe on the expansion ring.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the diameters of the wear-resistant composite short pipes on the annular plate are consistent with those of the wear-resistant composite short pipes on the expansion ring.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the material of the expansion ring is consistent with that of the annular plate.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the plurality of annular plates are located on the same horizontal plane.

The thermal expansion self-absorption large-hole distribution plate is further optimized as follows: the outer circumference of the outermost ring of annular plates is also provided with a connecting plate extending downwards.

The thermal expansion self-absorption macroporous distribution plate has the following beneficial effects:

the plate body of the large-hole distribution plate is of a split structure, a gap is formed between every two adjacent annular plates and the annular plates are connected through the expansion ring, and in the working process of the regenerator, the large-hole distribution plate generates expansion deformation in the radial direction after being heated, and the expansion deformation can be absorbed by the expansion ring, so that the force of the expansion deformation is prevented from being transferred to the wear-resistant composite short pipe, the wear-resistant composite short pipe is prevented from cracking or even breaking, the service life of the wear-resistant composite short pipe is prolonged, and the maintenance cost of the large-hole distribution plate of;

the expansion ring of the large-hole distribution plate can improve the integral strength of the plate body, not only can save reinforcing ribs on the distribution plate, but also can reduce the thickness of the plate body, and can obviously reduce the manufacturing cost of the large-hole distribution plate of the regenerator by reducing the length of the skirt.

Drawings

FIG. 1 is a schematic side view of a large-hole distribution plate (form 1) according to the present invention;

FIG. 2 is a schematic side view of a large-hole distribution plate (form 2) according to the present invention;

FIG. 3 is a schematic view of a top down structure of the large-hole distribution plate of the present invention;

FIG. 4 is a schematic structural diagram of the application of the large-hole distribution plate of the present invention in a series-flow coke burning tank regenerator;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic structural diagram of the application of the large-hole distribution plate of the present invention between the overlapped first and second regenerators;

FIG. 7 is a schematic structural diagram of the large-hole distribution plate of the present invention applied to a two-stage riser series-flow coking drum;

FIG. 8 is a schematic structural diagram of the application of the large-hole distribution plate of the present invention as a main wind distribution plate;

FIG. 9 is a schematic structural diagram of the application of the large-hole distribution plate as a main air distribution plate in a high-low parallel riser catalytic cracking unit;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

the labels in the figure are: 1. the device comprises an annular plate, 2, an expansion ring, 3, a wear-resistant composite short pipe, 4, a large-hole distribution plate, 5, a regenerator, 6, a coking tank, 7, a secondary distributor, 8, a secondary distributor, 9, a riser, 10, a steam chamber, 11, a combustion chamber, 12, a settler, 13 and a skirt.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3: the utility model provides a thermal energy self absorption macropore distributing plate, includes the distributing plate body, and the distributing plate body comprises a plurality of annular plates 1 that loop covered in proper order, and a plurality of annular plates 1 are located same horizontal plane. A gap is reserved between every two adjacent annular plates 1 and the two adjacent annular plates are connected through expansion rings 2, and the expansion rings 2 are made of S30409. The annular plate 1 and the expansion ring 2 are both provided with a plurality of wear-resistant composite short pipes 3, the wear-resistant composite short pipes 3 can be ceramic pipes, and the diameters of the wear-resistant composite short pipes 3 on the annular plate 1 are larger than the diameters of the wear-resistant composite short pipes 3 on the expansion ring 2. The cross section of the expansion ring 2 is n-shaped, the material of the expansion ring 2 is consistent with that of the annular plates 1, and two side edges of the stainless steel expansion ring 2 are respectively connected with the inner ring of the outer annular plate 1 in the two adjacent annular plates 1 and the outer ring of the inner annular plate 1. The outer circumference of the outermost ring of annular plates 1 is also provided with downwardly extending connecting plates. Because the plate body of the large-hole distribution plate is of a split structure, a gap is formed between every two adjacent annular plates and the annular plates are connected through the expansion ring, and in the working process of the regenerator, the large-hole distribution plate is radially expanded and deformed after being heated, and the expansion deformation can be absorbed by the expansion ring, so that the force of the expansion deformation is prevented from being transferred to the wear-resistant composite short pipe, the wear-resistant composite short pipe is cracked or even broken, the service life of the wear-resistant composite short pipe is prolonged, and the maintenance cost of the large-hole distribution plate of. And the expansion ring of the large-hole distribution plate can improve the overall strength of the plate body, not only can save reinforcing ribs on the distribution plate, but also can reduce the thickness of the plate body, and can obviously reduce the manufacturing cost of the large-hole distribution plate of the regenerator by reducing the length of the skirt 13.

As shown in fig. 4 and 5, the invention is applied to a series-flow coke burning tank regenerator by using a large-hole distribution plate as a medium distributor. As shown in FIG. 6, the invention is an application of the large-hole distribution plate as a medium distributor in a two-section riser series-flow coking tank. The distribution plate between the coke burning tank and the regenerator and between the first regenerator and the second regenerator can make the catalyst distribution more uniform.

As shown in FIG. 7, the invention is an application of the large-hole distribution plate as a medium distributor in a two-section riser series-flow coking tank. As shown in fig. 8-10, the application of the large-hole distribution plate of the present invention as a main wind distribution plate is illustrated.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.