CN214598929U

CN214598929U - Bin-divided fixed bed reactor

Info

Publication number: CN214598929U
Application number: CN202023106112.5U
Authority: CN
Inventors: 王月昶; 刘丽艳
Original assignee: Zhangjiagang Aier Environmental Protection Engineering Co ltd
Current assignee: Zhangjiagang Aier Environmental Protection Engineering Co ltd
Priority date: 2020-04-02
Filing date: 2020-12-21
Publication date: 2021-11-05
Anticipated expiration: 2030-12-21

Abstract

The application discloses bin-divided fixed bed reactor, the inner chamber that encloses including casing and casing, the casing is provided with reactant import and reactant export, reactant import department is provided with the inlet duct, follows the inlet duct extends to the reactor inner chamber is provided with at least one inlet duct guide plate, the reactant exit is provided with the outlet duct, follows the reactant inner chamber extends to outlet duct department and is provided with at least one outlet duct guide plate, reactor shell inner chamber sets up by the baffle that is provided with along the casing vertical direction, the baffle links to each other with entry guide plate and outlet guide plate, the intracavity is provided with the catalyst support grid in the reactor. The bin-divided fixed bed reactor with the integrated diversion structure of the bin-divided fixed bed reactor eliminates the invalid height of equipment, simplifies the pipeline arrangement, improves the equipment rigidity, organically combines the distribution of air flow and the arrangement of catalysts, reduces the unevenness and the flow resistance and improves the reaction efficiency.

Description

Bin-divided fixed bed reactor

Technical Field

The application relates to the field of industrial gas purification, in particular to a bin-type fixed bed reactor.

Background

The environmental and resource problems are major problems facing the world at present, with the development of social economy and the improvement demand of human living environment, the pollutant emission standards of various industries are continuously refined and gradually implemented, and the development of large catalytic oxidation reduction and adsorption reactors is promoted by the deep treatment demand of industrial exhaust gas, so that the application of large reactors such as large SCR denitration reactors, activated carbon adsorbers and the like is more and more common. The flow rate of the waste gas in the factory can be more than hundreds of thousands to hundreds of thousands of cubic meters per hour, the quantity of the needed catalyst/adsorbent can be dozens to hundreds of cubic meters, and the sectional area of a single reactor can reach hundreds of square meters. In order to ensure the reaction effect and avoid the conditions of gas bias flow and the like, various flow guide structures such as grids, flow guide plates, distribution plates and the like must be arranged. Because the size of the pipeline and the reactor is very large, the diversion structure is generally designed at the inlet of the pipeline, the elbow and the reactor, and the whole reactor can be as high as twenty-thirty meters. The inlet and outlet pipelines of the reactor are turned at multiple positions, so that the distribution effect of the flow guide structure is partially offset; meanwhile, inside the reactor, the inevitable difference of filling density and resistance exists, the obvious bias flow condition of gas often exists, and the unevenness can reach more than 30%. For example, the serious ammonia slip problem of some SCR denitration reactors causes secondary pollution and operation loss which cannot be ignored. Therefore, it is necessary to develop an integrated, compact reactor structure, which can improve gas distribution and reduce the volume of the equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bin-type fixed bed reactor to overcome not enough among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bin-type fixed bed reactor, includes the inner chamber that casing and casing enclose, the casing is provided with reactant inlet and reactant outlet, reactant inlet department is provided with the inlet duct, follows the inlet duct extends to the reactor inner chamber is provided with at least one inlet duct guide plate, the reactant exit is provided with the outlet duct, follows the reactant inner chamber extends to outlet duct department and is provided with at least one outlet duct guide plate, reactor shell inner chamber sets up by the baffle that is provided with along the casing vertical direction, the baffle links to each other with inlet guide plate and outlet guide plate, be provided with the catalyst support grid in the reactor inner chamber.

Preferably, the inlet baffle and the outlet baffle are connected with the partition plate to divide the inner cavity into at least two chambers.

Preferably, the catalyst support grid is horizontally disposed in the inner cavity.

Preferably, the catalyst support grid and the horizontal direction form an included angle of 5-10 degrees and are arranged in the inner cavity.

Preferably, the shell surface is provided with a discharge opening at the end of the catalyst support grid inclined downwards.

Preferably, the inlet duct is disposed at one end of the upper side of the housing, the inlet duct baffle turns the airflow from the horizontal direction to the vertical direction, and the outlet duct is disposed at one end of the lower side of the housing.

Preferably, the cross section of the shell is rectangular, and the length-width ratio of the shell is 1: 1-1: 5.

Preferably, a certain gap is left between the partition plate and the support grid.

Preferably, the inlet pipeline and the outlet pipeline of the shell are rectangular in section, and the length-width ratio of the inlet pipeline and the outlet pipeline is 1: 1-1: 10.

Preferably, the catalyst support grid is provided with 1-4 layers.

Compared with the prior art, the bin-type fixed bed reactor with the integrated diversion structure of the bin-type fixed bed reactor has the advantages that the invalid height of equipment is eliminated, the pipeline arrangement is simplified, the equipment rigidity is improved, meanwhile, the distribution of air flow and the arrangement of catalysts are organically combined, the unevenness and the flow resistance are reduced, and the reaction efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of a structure of a bin-divided fixed bed reactor according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a structure of a bin-divided fixed bed reactor according to a second embodiment of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1, a bin-type fixed bed reactor with an integrated diversion structure in this embodiment of the present application includes: a housing 2, an inlet conduit 1, an inlet baffle 3, a baffle 4, a catalyst support grid 7, an outlet baffle 10, and an outlet conduit 9. The inlet conduit 1 is arranged at the upper end of the housing and the outlet conduit 9 is arranged at the lower end of the housing. The inlet baffle 3 turns the air flow flowing in from the inlet duct 1 from the horizontal direction to the vertical direction. The number of the inlet guide plates 3 is 4, the inlet guide plates 3 are equally distributed in the inlet pipeline 1, the inlet pipeline 1 is divided into 5 parts, and the height h' of each part is 0.3-1.0 m.

The outlet guide plate 10 and the inlet guide plate 3 are symmetrically arranged, 4 partition plates connected with the inlet guide plate 3 and the outlet guide plate 10 are also arranged, and the inlet guide plate 3, the outlet guide plate 10 and the partition plates 4 divide the inner cavity into 5 chambers. The depth d' of each chamber is 0.5 m-1.5 m, thus reducing the loading of the catalyst in each chamber, being beneficial to uniform loading of the catalyst and improving the integral rigidity of the reactor. The catalyst support grid 7 is provided with 2 layers, which is beneficial to improving the reaction speed.

Example 2

Referring to fig. 2, when random packing is used, the catalyst support grid 7 in the reactor housing is inclined to one side and to the direction of the horizontal gas flow, and the lower side is provided with discharge holes at an angle of 5 to 10 °.

To sum up, the bin-divided fixed bed reactor of the integrated diversion structure of the bin-divided fixed bed reactor eliminates the invalid height of equipment, simplifies the pipeline arrangement, improves the equipment rigidity, organically combines the distribution of air flow and the arrangement of catalysts, reduces the unevenness and the flow resistance and improves the reaction efficiency.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a detailed description of the present application, and it should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application, and these should also be considered as the protection scope of the present application.

Claims

1. The utility model provides a bin-type fixed bed reactor, includes the inner chamber that casing and casing enclose, its characterized in that: the casing is provided with reactant inlet and reactant outlet, reactant inlet department is provided with the inlet duct, follows the inlet duct extends to the reactor inner chamber is provided with at least one inlet duct guide plate, the reactant exit is provided with the outlet duct, follows the reactant inner chamber extends to outlet duct department and is provided with at least one outlet duct guide plate, reactor casing inner chamber sets up by the baffle that is provided with along the casing vertical direction, the baffle links to each other with entry guide plate and outlet guide plate, be provided with the catalyst in the reactor inner chamber and support the grid.

2. The split-bin fixed bed reactor of claim 1, wherein: the inlet guide plate and the outlet guide plate are connected with the partition plate to divide the inner cavity into at least two chambers.

3. The split-bin fixed bed reactor of claim 1, wherein: the catalyst support grid is horizontally arranged in the inner cavity.

4. The split-bin fixed bed reactor of claim 1, wherein: the catalyst support grid is arranged in the inner cavity at an included angle of 5-10 degrees with the horizontal direction.

5. The split-bin fixed bed reactor of claim 4, wherein: and a discharge opening is formed in one end, which is positioned on the surface of the shell and is downwards inclined, of the catalyst support grid.

6. The split-bin fixed bed reactor of claim 1, wherein: the inlet pipeline is arranged at one end of the upper side of the shell, the inlet pipeline guide plate turns the airflow from the horizontal direction to the vertical direction, and the outlet pipeline is arranged at one end of the lower side of the shell.

7. The split-bin fixed bed reactor of claim 1, wherein: the cross section of the shell is rectangular, and the length-width ratio of the shell is 1: 1-1: 5.

8. The split-bin fixed bed reactor of claim 1, wherein: a certain gap is left between the partition plate and the support grid.

9. The split-bin fixed bed reactor of claim 1, wherein: the cross sections of the inlet pipeline and the outlet pipeline of the shell are rectangular, and the length-width ratio of the inlet pipeline and the outlet pipeline is 1: 1-1: 10.