CN211677660U

CN211677660U - Novel hydrogen peroxide wedge-shaped cone grid support

Info

Publication number: CN211677660U
Application number: CN201921979735.8U
Authority: CN
Inventors: 孟德友; 孟佳佳; 康佳
Original assignee: Anping Yanzhao Griddle Wire Mesh Co ltd
Current assignee: Anping Yanzhao Griddle Wire Mesh Co ltd
Priority date: 2019-11-16
Filing date: 2019-11-16
Publication date: 2020-10-16
Anticipated expiration: 2029-11-16

Abstract

The utility model belongs to the technical field of hydrogen peroxide solution carclazyte reactor inner member, in particular to a novel hydrogen peroxide solution wedge-shaped cone grid support, which comprises a conical framework and a silk screen, wherein the silk screen covers the inner surface of the conical framework, the silk screen is composed of a plurality of small silk screens, and the small silk screens can be detachably fixed on the inner surface of the conical framework; the silk screen is the block structure, comprises a plurality of little silk screens, makes its convenient to detach, washs and maintains, and the silk screen adopts wedge silk screen, and the common silk screen structure of relative ratio is difficult for blockking up, consumes the material few, enables working fluid evenly distributed, and gas smoothly passes through, has fine practical value.

Description

Novel hydrogen peroxide wedge-shaped cone grid support

Technical Field

The utility model belongs to the technical field of hydrogen peroxide solution carclazyte's bed reactor inner member, in particular to novel hydrogen peroxide solution wedge cone grid supports.

Background

The hydrogen peroxide is commonly called as hydrogen peroxide, has extremely common application in the fields of medical treatment, military industry, industrial production and the like, is mainly used as a disinfectant, a bleaching agent and a raw material for producing peroxide, and has wider application along with the rapid development of economy in the present stage of China.

In the recent decades of scientific and technological production, the production devices of chemical products are continuously increasing in size due to the market demands. The hydrogen peroxide device is developed from the annual kiloton grade of the last century to the annual nearly twenty-kiloton grade of the current hydrogen peroxide device, and the large scale of the production scale of the hydrogen peroxide device inevitably requires large parameterization of equipment, and increases the diameter, the wall thickness and the weight, thereby increasing the difficulty for designing equipment internals and providing new requirements. The design of support structures as an important component of equipment internals is highly complex and important. The original inner supporting piece structure suitable for small and medium-sized equipment cannot meet the requirements of process production and equipment operation.

The main method for producing hydrogen peroxide in China at the present stage is an anthraquinone oxidation method, wherein the post-treatment is an important process, the post-treatment process mainly refers to that the working solution raffinate extracted by an extraction tower is subjected to settling by a settler, drying by a drying tower and separation by an alkali separator, then enters a clay bed for treatment, and the regenerated working solution after a series of purification reaction treatment returns to a hydrogenation bed, so that a post-treatment process is completed. The clay bed has the main functions of partially regenerating 2-ethyl anthraquinone degradation products, drying and removing working solution in the hydrogenation process, purifying the working solution, keeping the activity of the whole working solution system and continuously and stably producing.

The activated alumina filled in the clay bed can effectively regenerate the anthraquinone, and the anthraquinone quantity to be regenerated is continuously increased along with the expansion of a hydrogen peroxide production device, so that the diameter of the clay bed is increased (the height of the filler support is fixed). The increase in diameter entails an increase in the weight of the filler inside. This puts new demands on the design of its support.

At present, the support form of the activated alumina in the white soil bed mainly comprises two support parts and a filler layer.

Firstly, the supporting part support is the supporting form mainly applied to the packed tower and is applicable to the clay bed, wherein, the grid plate support is the preferred design, and has the advantages of simple structure, large free sectional area (void ratio) and low manufacturing cost. The free cross section of the grid plate support is smaller than that of the filler, the distance between the grid plates can be relatively enlarged for large-diameter equipment, materials can be saved on the premise of ensuring the support strength, and the manufacturing complexity is reduced. During installation of the equipment, a layer of loose filler with large diameter is laid on the surface of the grid plate, and then small filler (activated alumina) is placed. The large diameter vessel grid support structure must be designed in blocks. The following problems exist with grid support: the grid plate supporting surface must be paved with a wire mesh or a large-diameter filler layer to support the activated alumina, and in the actual production, when the activated alumina fails in the later period, the powdering is serious, the wire mesh holes can be blocked by powder agglomerates, and the liquid resistance is increased. When the filler is replaced, the wire mesh needs to be removed for washing the outside of the container, and the wire mesh is fixed on the grid plate, so that the grid plate also needs to be partially or completely removed during removal, and the grid plate needs to be designed reasonably and is convenient to remove. The strength of the detachable structure of the block is necessarily affected.

The support of the packing layer is a support type mainly adopted in the existing large-diameter white soil bed, is simple and convenient to design and install, has a good support effect, is used as a support of activated alumina (low in strength), and the support material has the characteristics of stable chemical performance, low water absorption rate and high temperature and high pressure resistance, has high strength and needs to be repeatedly used. The packing layer is supported in an ideal state, the loading and unloading operation is simple, and the labor consumption is low. For the grid plate support, the filler layer support is tightly attached to the inner wall of the equipment and fills the lower part of the equipment, so that the stress caused by the filler on the upper part is uniformly dispersed on the inner surface of the lower part of the equipment due to full contact, the safety problem of stress concentration does not exist, and the strength design of the equipment is facilitated. However, in production practice over the years, it has been found that the packing layer support also has the following problems: the increase in the diameter of the device results in an increasing volume of support for the packing layers. The hydrogen peroxide production process requires a clean system, and due to the low strength and easy pulverization of the activated alumina, when the activated alumina fails, if a large amount of powder cannot be discharged from the clay bed in time, the powder inevitably stays on the supporting surface of the packing layer or permeates into the inside of the support of the packing layer and is mutually bonded with the support, so that the operation period is reduced, and the regeneration effect is poor. Therefore, when the activated alumina is replaced, the filler support must be cleaned outside the container, and due to the increase of the volume, the cleaning and dismounting amount is increased, the manual labor amount is increased, the regeneration period is prolonged, and the continuous production is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel hydrogen peroxide solution wedge cone grid supports can solve the problem that points out among the background art.

The utility model provides a novel hydrogen peroxide solution wedge cone grid supports, includes toper skeleton and silk screen, the silk screen covers on the internal surface of toper skeleton, the silk screen comprises a plurality of small silk screens, the small silk screen can be dismantled and fix on the internal surface of toper skeleton.

Preferably, a plurality of positioning ring plates arranged along the height direction of the conical framework are arranged in the conical framework, a plurality of separation strips are arranged between every two adjacent positioning ring plates, the adjacent separation strips and the upper and lower positioning ring plates form separation grooves, and small silk screens can be detachably fixed in the separation grooves.

Preferably, the small silk screen is detachably fixed in the separation groove through a connecting pressing plate and a fastening bolt, the connecting pressing plate is fixed on the positioning ring plate through the fastening bolt, and the small silk screen is pressed in the separation groove by two ends of the connecting pressing plate.

Preferably, a sealing element is arranged at the joint of the small silk screen and the positioning ring plate.

Preferably, the small wire mesh is a wedge-shaped wire mesh.

Preferably, an outer edge ring plate is arranged at the outer edge of the upper end of the conical framework.

Preferably, the conical framework is surrounded by an opening plate.

The utility model provides a novel hydrogen peroxide solution wedge cone grid supports has following advantage:

1. the utility model provides a cone skeleton is toper overall structure, because the cone skeleton has increased the area of contact of working solution with aluminium oxide, can improve the initial distribution quality of liquid, improves mass transfer efficiency to improve the effect that aluminium oxide participated in the reaction, had good maneuverability and practicality.

2. Because the silk screen comprises a plurality of small silk screens, the small silk screens can be disassembled and fixed, the silk screens are convenient to disassemble and clean, and the whole silk screens are not required to be disassembled and replaced.

3. The utility model discloses a be wedge silk screen, the wedge structure can make the working solution circulation more smooth and easy, even if later stage active alumina became invalid, also was difficult to block up when the powderization is serious, and this point had both solved the resistance that blocks up the silk screen and shined into and has fallen, had also solved simultaneously and stopped to overhaul the trouble that the back silk screen need park to overhaul and dismantle repeatedly and wash.

Drawings

Figure 1 is a schematic structural diagram of the present invention,

figure 2 is a schematic diagram of the internal structure of the present invention,

figure 3 is an enlarged schematic view of the present invention at the point of figure 2-a,

figure 4 is an enlarged schematic view of the present invention at the point of figure 3-B,

figure 5 is a schematic top view of the tapered frame of the present invention,

figure 6 is a schematic top view of the present invention,

figure 7 is an enlarged view of the present invention at the point of figure 6-C,

figure 8 is a schematic diagram of the operation of the present invention,

description of reference numerals:

reference numbers in the figures: 1. a tapered skeleton; 2. A wire mesh; 3. a small wire mesh; 4. positioning the ring plate; 5. A dividing strip; 6. a separation tank; 7. connecting the pressing plate; 8. fastening a bolt; 9. an outer edge ring plate; 10. and a seal.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.

As shown in fig. 1-8, the embodiment of the utility model provides a pair of novel hydrogen peroxide solution wedge cone grid supports, including toper skeleton 1 and silk screen 2, toper skeleton 1 is enclosed by the trompil board, encloses into a toper staving through the trompil board, and toper skeleton 1 is used for bearing the weight of the filler, and the skeleton is the toper structure, can greatly increased working solution and alumina's area of contact, can improve the initial distribution quality of liquid, improves mass transfer efficiency to the effect of alumina participation reaction has been improved, has good maneuverability and practicality.

The silk screen 2 covers the inner surface of the conical framework 1, the silk screen 2 is composed of a plurality of small silk screens 3, the small silk screens 3 are detachably fixed on the inner surface of the conical framework 1, a plurality of positioning ring plates 4 arranged along the height direction of the conical framework 1 are arranged in the conical framework 1, the positioning ring plates 4 are fixed in the conical framework 1 in a welding mode, the positioning ring plates 4 are distributed up and down, as shown in figure 5, a plurality of separating strips 5 are arranged between adjacent positioning ring plates 4, the separating strips 5 are also welded in the conical framework 1 in a welding mode, the adjacent separating strips 5 and the upper and lower positioning ring plates 4 form separating grooves 6 in a surrounding mode, as shown in figures 4, 6 and 7, the small silk screens 3 are detachably fixed in the separating grooves 6 through connecting pressing plates 7 and fastening bolts 8, the connecting pressing plates 7 are fixed on the positioning ring plates 4 through the fastening bolts 8, the small silk screens 3 are pressed at the two ends of the connecting pressing plate 7 in the separation grooves 6, the small silk screens 3 are fixedly limited in the separation grooves 6 corresponding to each other, the silk screens 2 are composed of the small silk screens 3 independent of a plurality of blocks, the small silk screens 3 can be disassembled and fixed, and through the structure, the small silk screens 3 can be disassembled independently in the processes of overhauling, replacing and cleaning without disassembling the whole large screen, so that the small silk screens are very easy to overhaul, replace and clean.

Example 2:

on the basis of embodiment 1, as shown in fig. 4, the small silk screen 3 is a wedge-shaped silk screen, and the wedge-shaped structure is adopted, so that the working fluid can flow more smoothly, even if the activated alumina fails in the later period, the activated alumina is not easy to block when the activated alumina is seriously powdered, the problem that the blocked silk screen is lowered in irradiation resistance, and the trouble that the blocked silk screen needs to be stopped, overhauled, repeatedly detached and washed is solved.

Example 3:

on the basis of any of the above embodiments, as shown in fig. 1, an outer edge ring plate 9 is arranged at the outer edge of the upper end of the conical framework 1 to ensure that the conical framework 1 is horizontal after being welded with the equipment shell.

Example 4:

on the basis of any of the above embodiments, as shown in fig. 4, in order to ensure the sealing effect, a sealing member 10 is disposed at the joint of the small silk screen 3 and the positioning ring plate 4, and the sealing member 10 may be a sealing rubber strip, a sealing rubber sheet, or the like.

Alumina filler is filled in the cone skeleton, when the reactor works, liquid is sprayed onto the cone skeleton from a working liquid inlet through an inlet distributor, liquid phase is discharged from a container outlet from bottom to top under the action of gas phase flow, and the liquid phase passes through the pore plate from bottom to top through the opening on the cone pore plate under the pushing of pressure difference to fully react with alumina and is discharged from the top of the reactor.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. A novel hydrogen peroxide wedge cone grid support is characterized in that: including toper skeleton (1) and silk screen (2), silk screen (2) cover on the internal surface of toper skeleton (1), silk screen (2) comprise a plurality of small silk screen (3), small silk screen (3) can be dismantled and fix on the internal surface of toper skeleton (1).

2. The novel hydrogen peroxide wedge-shaped cone grid support according to claim 1, is characterized in that: the novel wire mesh screen is characterized in that a plurality of positioning ring plates (4) arranged along the height direction of the conical framework (1) are arranged in the conical framework (1), a plurality of separation strips (5) are arranged between every two adjacent positioning ring plates (4), the adjacent separation strips (5) and the upper and lower positioning ring plates (4) are enclosed to form separation grooves (6), and small fixed wire meshes (3) can be disassembled in the separation grooves (6).

3. The novel hydrogen peroxide wedge-shaped cone grid support of claim 2, which is characterized in that: the small silk screen (3) is detachably fixed in the separation groove (6) through a connecting pressing plate (7) and fastening bolts (8), the connecting pressing plate (7) is fixed on the positioning ring plate (4) through the fastening bolts (8), and the small silk screen (3) is pressed in the separation groove (6) through two ends of the connecting pressing plate (7).

4. The novel hydrogen peroxide wedge-shaped cone grid support of claim 3, which is characterized in that: and a sealing element (10) is arranged at the joint of the small silk screen (3) and the positioning ring plate (4).

5. The novel hydrogen peroxide wedge-shaped cone grid support according to any one of claims 1 to 4, is characterized in that: the small silk screen (3) is a wedge-shaped silk screen.

6. The novel hydrogen peroxide wedge-shaped cone grid support according to any one of claims 1 to 4, is characterized in that: an outer edge ring plate (9) is arranged at the outer edge of the upper end of the conical framework (1).

7. The novel hydrogen peroxide wedge-shaped cone grid support according to any one of claims 1 to 4, is characterized in that: the conical framework (1) is formed by surrounding perforated plates.