CN218516739U

CN218516739U - Regenerator dense-phase grid for preparing olefin by cracking crude oil

Info

Publication number: CN218516739U
Application number: CN202222666488.4U
Authority: CN
Inventors: 李治; 丁书兵
Original assignee: Shandong High End Chemical Research Institute Co ltd
Current assignee: Shandong High End Chemical Research Institute Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-02-24
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a dense phase grid for crude oil cracking system alkene regenerator, including regenerator, dense phase grid and lining baffle, dense phase grid fixed connection has seted up first preformed hole and second preformed hole in the regenerator on the dense phase grid, and pipeline in the regenerator passes preformed hole and dense phase grid sliding connection, the beneficial effects of the utility model are embodied in: the internal components of four layers of grids are arranged in the dense-phase area of the regenerator to replace the traditional hollow cylinder regenerator, the grid components similar to fillers can equally divide a bed layer into a plurality of small flow units, gas and solid are exchanged in each unit, the gas and solid back mixing among the units is small, the bed layer is more uniform than the fluidization of a common fluidized bed, the gas and solid mass transfer efficiency is improved, the main aim is to reduce the main air consumption of the regenerator, improve the regeneration effect, further improve the scorching capacity of the regenerator and promote the digging potential and energy expansion of the device.

Description

Regenerator dense-phase grid for preparing olefin by cracking crude oil

Technical Field

The utility model relates to a crude oil cracking equipment technical field, concretely relates to be used for crude oil cracking system alkene regenerator dense phase grid.

Background

The catalytic cracking regenerator is a typical gas-solid countercurrent contact process, in which combustion of air and coke on the catalyst is realized, and required heat and low-carbon regenerated catalyst are provided for the reaction process. The conventional regenerator is operated in a bubbling bed state, the back mixing of a bed layer is serious, bubbles in the bed layer are continuously merged, expanded and broken, the contact between air and catalyst particles is not uniform, the scorching efficiency is low, and more problems exist.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a be used for crude oil cracking to make alkene regenerator dense phase grid to it is inhomogeneous to solve regenerator catalyst fluidization, and the bed backmixing is serious, and gas-solid contact inefficiency burns the inefficiency problem.

The utility model discloses a realize through following technical scheme: a dense-phase grating of a regenerator for preparing olefin by cracking crude oil comprises the regenerator, the dense-phase grating and a lining baffle, and is characterized in that: the dense-phase grating is fixedly connected in the regenerator, a first preformed hole and a second preformed hole are formed in the dense-phase grating, and a pipeline in the regenerator penetrates through the preformed holes to be in sliding connection with the dense-phase grating.

Preferably, the dense-phase grating consists of a first grating sheet and a second grating sheet, the first grating sheet and the second grating sheet are fixedly connected through a second clamping plate, the dense-phase grating is fixedly connected with a second supporting beam transverse plate through the first clamping plate, the second grating sheet is fixedly connected with a first supporting beam transverse plate through the first clamping plate, the second supporting beam transverse plate is fixedly connected with a lining baffle, and the lining baffle is fixedly connected with the inner wall of the regenerator.

Preferably, the first grating pieces and the second grating pieces are both circular rings, and the diameters of the outer rings of the first grating pieces and the inner rings of the second grating pieces are the same.

Preferably, the dense-phase grid is provided with four layers in the regenerator sequentially from top to bottom.

Preferably, six second supporting beam transverse plates are uniformly arranged on the dense-phase grid, and six first supporting beam transverse plates are uniformly arranged on the second grid plate.

The beneficial effects of the utility model are embodied in: the dense-phase zone of the regenerator is internally provided with internal components with four layers of grids to replace the traditional hollow cylinder regenerator, the grid components similar to fillers can equally divide a bed layer into a plurality of small flow units, gas and solid are exchanged in each unit, gas and solid backmixing among the units is small, the bed layer is more uniform than the fluidization of a common fluidized bed, the gas and solid mass transfer efficiency is improved, the main aim is to reduce the main air consumption of the regenerator, improve the regeneration effect, further improve the scorching capacity of the regenerator and promote the submergence and energy expansion of the device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of the dense-phase grid mounting structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the dense-phase grid according to the present invention;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of the present invention;

FIG. 4 is a sectional view taken along line B-B of the present invention;

fig. 5 is an enlarged view of the structure at the position C of the present invention.

In the attached drawing, 1, a regenerator, 2, a dense-phase grid, 3, a pipeline, 4, a first supporting beam transverse plate, 5, a second supporting beam transverse plate, 6, a first reserved hole, 7, a first grid piece, 8, a second grid piece, 9, a second reserved hole, 10, a lining baffle, 11, a first clamping plate, 12 and a second clamping plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to make the above objects, features and advantages of the present invention more comprehensible, the following detailed description is given in conjunction with the embodiments: as shown in fig. 1-5, the present invention is realized by the following technical solutions: a dense-phase grid of a regenerator for producing olefin by cracking crude oil comprises a regenerator 1, a dense-phase grid 2 and a lining baffle 10, and is characterized in that: the dense-phase grating 2 is fixedly connected in the regenerator 1, a first preformed hole 6 and a second preformed hole 9 are arranged on the dense-phase grating 2, and a pipeline 3 in the regenerator 1 penetrates through the preformed holes to be in sliding connection with the dense-phase grating 2.

Dense-phase grid 2 comprises first grid piece 7 and second grid piece 8, and first grid piece 7 and second grid piece 8 are through second cardboard 12 fixed connection, and dense-phase grid 2 is last through first cardboard 11 fixed connection with a second supporting beam diaphragm 5, through first cardboard 11 fixed connection with a first supporting beam diaphragm 4 on the second grid piece 8, fixedly connected with lining baffle 10 on a second supporting beam diaphragm 5, lining baffle 10 and regenerator 1 inner wall fixed connection.

The first grating pieces 7 and the second grating pieces 8 are both circular rings, and the diameters of the outer rings of the first grating pieces 7 and the inner rings of the second grating pieces 8 are the same.

The dense phase grid 2 is provided with four layers in the regenerator 1 in sequence from top to bottom.

Six second supporting beam transverse plates 5 are uniformly arranged on the dense-phase grid 2, and six first supporting beam transverse plates 4 are uniformly arranged on the second grid pieces 8.

The utility model discloses a theory of operation does: the dense-phase grid 2 is arranged in the regenerator 1, which can effectively reduce the back mixing of the catalyst at the dense-phase section, reduce the main air consumption and the carbon content of the regenerated catalyst, and prevent the tail combustion of the dilute-phase section of the regenerator 1, four sections of stainless steel dense-phase grids 2 are arranged in the regenerator 1, a certain space interval is arranged between each section, the bottom of each section is respectively filled with fluidized air, the catalyst flows from top to bottom, after being distributed by internal parts of the dense-phase grids 2, the catalyst uniformly contacts with the ascending air in a counter-current manner to be combusted, the catalyst flowing down from holes on the internal parts fills the airspace of the whole regenerator 1, the dispersed catalyst strengthens the exchange of a gas phase and a solid phase, the air and the catalyst particles transfer mass and heat, after passing through the multiple layers of internal parts, the catalyst particles are fully contacted and combusted with the air, the excessive air and gas media formed after the combustion are discharged out of the regenerator 1 after the entrained catalyst is separated by a cyclone, the regenerated catalyst is discharged from the bottom of the regenerator 1, and is sent to a lifting pipe by a regeneration bubble tube reactor, an internal member similar to be added in a common filler, so that the fluidized and the regenerated catalyst can be uniformly crushed, and can be used for preparing the regenerated catalyst and for improving the catalytic cracking device for preparing the olefin.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A dense-phase grid of a regenerator for producing olefins by cracking crude oil, which comprises a regenerator (1), a dense-phase grid (2) and a lining baffle (10), and is characterized in that: dense phase grid (2) fixed connection is in regenerator (1), has seted up first preformed hole (6) and second preformed hole (9) on dense phase grid (2), and pipeline (3) in regenerator (1) pass preformed hole and dense phase grid (2) sliding connection.

2. The dense phase grid for a regenerator for the production of olefins by cracking crude oil according to claim 1, wherein: dense phase grid (2) comprise first grid piece (7) and second grid piece (8), and first grid piece (7) and second grid piece (8) are through second cardboard (12) fixed connection, and dense phase grid (2) are gone up through first cardboard (11) fixedly connected with second supporting beam diaphragm (5), go up through first cardboard (11) fixedly connected with first supporting beam diaphragm (4) on second grid piece (8), fixedly connected with lining baffle (10) on second supporting beam diaphragm (5), lining baffle (10) and regenerator (1) inner wall fixed connection.

3. The dense-phase grid for a regenerator for producing olefins by cracking crude oil according to claim 2, wherein: the first grating pieces (7) and the second grating pieces (8) are both circular rings, and the diameters of the outer rings of the first grating pieces (7) and the inner rings of the second grating pieces (8) are the same.

4. The dense phase grid for a regenerator for the production of olefins by cracking crude oil according to claim 1, wherein: the dense-phase grating (2) is sequentially provided with four layers from top to bottom in the regenerator (1).

5. The dense phase grid for a regenerator for the production of olefins by cracking crude oil according to claim 2, wherein: six second supporting beam transverse plates (5) are uniformly arranged on the dense-phase grid (2), and six first supporting beam transverse plates (4) are uniformly arranged on the second grid pieces (8).