CN220176118U

CN220176118U - Purifying device for fluidized bed hydrogen peroxide production product

Info

Publication number: CN220176118U
Application number: CN202321215512.0U
Authority: CN
Inventors: 刘欣雨; 刘其祥
Original assignee: Jiangsu Zhongxu Technology Co ltd
Current assignee: Jiangsu Zhongxu Technology Co ltd
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-12-15
Anticipated expiration: 2033-05-19

Abstract

The utility model provides a purifying device for products produced by fluidized bed hydrogen peroxide, which relates to the technical field of purifying devices and comprises a purifying tower body, wherein a storage tower, a mixing tower and a separating tower are sequentially arranged in the purifying tower body from top to bottom, aromatic hydrocarbons are stored in the storage tower, the storage tower is communicated with one side of the lower end of the mixing tower through a connecting pipe, an aromatic hydrocarbon pump is communicated on the connecting pipe, a packing layer is arranged in the mixing tower, an extract liquid feeding port is arranged on one side of the upper end of the mixing tower, a bushing plate, a baffle plate and a uniform discharging mechanism are arranged in the separating tower, the bushing plate and the baffle plate are both arranged above the inside of the separating tower, the baffle plate is arranged below the bushing plate in a sliding manner, waste aromatic hydrocarbon calandria and hydrogen peroxide calandria are respectively arranged on the side walls above and below the separating tower, and the uniform discharging mechanism is arranged at the positions of the waste aromatic hydrocarbon calandria hydrogen peroxide calandria and the hydrogen peroxide calandria respectively. According to the utility model, the separation tower and the mixing tower are separated by the partition plate, so that the liquid in the separation tower can be kept still, and a good layering effect is achieved.

Description

Purifying device for fluidized bed hydrogen peroxide production product

Technical Field

The utility model relates to the technical field of purifying devices, in particular to a purifying device for a fluidized bed hydrogen peroxide production product.

Background

The industrial scale hydrogen peroxide production mainly adopts an anthraquinone process, uses anthraquinone as a solute and prepares working solution with an organic solvent according to a certain proportion. And (3) introducing hydrogen to carry out hydrogenation reaction under the conditions of certain temperature and pressure and the presence of a catalyst, so as to obtain the corresponding hydro-anthraquinone solution. The hydro-anthraquinone solution is subjected to oxidation reaction with oxygen in the air at a certain temperature and pressure, and is subjected to extraction purification and purification to obtain a hydrogen peroxide aqueous solution product with the mass fraction of 27.5-38%.

The current production process of hydrogen peroxide by anthraquinone method basically adopts palladium catalyst on catalyst selection, the technique of the palladium catalyst by anthraquinone method is divided into two hydrogenation process technologies of a fixed bed and a fluidized bed, and in the production of hydrogen peroxide by adopting a fluidized hydrogenation process, working solution after pure water extraction is subjected to vacuum dehydration and then circulated back to the hydrogenation process.

The hydrogen peroxide production purifier comprises an extraction purification section tower body and a separation section tower body which are communicated with each other, wherein an upper aromatic hydrocarbon outlet and a hydrogen peroxide inlet are arranged on the extraction purification section tower body, a hydrogen peroxide distributor and a multi-layer filler are connected in the extraction purification section tower body, and the hydrogen peroxide distributor is communicated with the hydrogen peroxide inlet through a pipeline; the upper part of the separation section tower body is provided with a lower aromatic hydrocarbon inlet, and the bottom is provided with a hydrogen peroxide outlet; the upper end of the extraction purification section tower body is connected with a storage tank section tower body, the upper part of the storage tank section tower body is provided with a storage aromatic hydrocarbon inlet, the lower part of the storage tank section tower body is provided with a storage aromatic hydrocarbon outlet, the storage tank section tower body is connected with a gas communicating pipe, and the gas communicating pipe vertically penetrates through the top of the extraction purification section tower body and is communicated with the storage tank section tower body and the extraction purification section tower body; the reserved aromatic hydrocarbon outlet is connected with the lower aromatic hydrocarbon inlet through an external connecting pipe, and the external connecting pipe is connected with a control valve. The utility model has small occupied area and low investment.

In the production process of the anthraquinone process hydrogen peroxide, a purification tower is needed, a final finished product is obtained after the product is purified by an extraction tower, and the purification process is as follows: the extraction liquid contains a small amount of working solution, the purification treatment is needed to remove the impurities, the purification tower is a packed tower, the purification tower is filled with heavy aromatic hydrocarbon, the extraction liquid entering from the top of the tower flows downwards in the tower, and the heavy aromatic hydrocarbon is pumped into the bottom of the purification tower by an aromatic hydrocarbon pump to form countercurrent extraction with the extraction liquid so as to remove the organic impurities in the hydrogen peroxide.

In the above patent, when the aromatic hydrocarbon and hydrogen peroxide are separated in the final separation section tower body, because the density difference between the aromatic hydrocarbon and hydrogen peroxide is small, the separation is difficult to be carried out, so that a small amount of aromatic hydrocarbon is entrained in the hydrogen peroxide product, the product quality is influenced, in the purification engineering, the interface is controlled to be low, the aromatic hydrocarbon can be caused to run into a finished product tank, the packaging is influenced, the interface control is high, and the hydrogen peroxide in the tower can overflow to an aromatic hydrocarbon storage tank, so that accidents occur.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, the density difference between aromatic hydrocarbon and hydrogen peroxide is small, layering is difficult, a small amount of aromatic hydrocarbon is entrained in a hydrogen peroxide product, the product quality is affected, in the purification engineering, the interface is controlled to be low, the aromatic hydrocarbon can run into a finished product tank to affect packaging, the interface control is high, and hydrogen peroxide in a tower can overflow to an aromatic hydrocarbon storage tank to cause accidents.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a be used for fluidized bed hydrogen peroxide production product purifier, includes the purification tower body, the inside top-down of purification tower is equipped with storage tower, mixing tower and separator in proper order, it has aromatic hydrocarbon to store in the storage tower, the storage tower with mixing tower lower extreme one side is through the connecting pipe intercommunication setting, the intercommunication is equipped with the aromatic hydrocarbon pump on the connecting pipe, be equipped with the packing layer in the mixing tower, mixing tower upper end one side is equipped with the extract feed inlet, be equipped with bushing, baffle and even emission mechanism in the separator, the bushing with the baffle all sets up the inside top of separator, the baffle slides and sets up the bushing below, be equipped with useless aromatic hydrocarbon calandria and hydrogen peroxide calandria respectively on separator top and the below lateral wall, even emission mechanism is equipped with two and is located useless aromatic hydrocarbon calandria and hydrogen peroxide calandria position department respectively.

As a preferred implementation mode, the waste aromatic hydrocarbon calandria is arranged below the baffle, the side wall of the bushing is fixedly arranged on the inner wall of the separation tower, a plurality of leak holes are uniformly formed in the bushing, the baffle is arranged below the bushing in an adjustable sliding manner, a through hole which is communicated with the leak holes is formed in the baffle, when mixed liquid is dropped into the separation tower, the through hole in the baffle is communicated with the leak holes up and down, liquid passes through the bushing and the baffle to enter the separation tower, if the liquid in the separation tower is full, the baffle can be driven by the baffle, so that the leak holes are staggered with the through holes, and the liquid cannot continuously flow downwards.

As a preferred implementation mode, the central point of baffle puts with bushing below central point department rotates to be connected, be equipped with anticorrosive waterproof motor on the bushing, the baffle passes through anticorrosive waterproof motor drive, the baffle top is equipped with the sealing block, the sealing block with leak hole sealing block sets up on the bushing, through driving anticorrosive waterproof motor, drives the baffle and rotates, can remove the sealing block to under the leak hole for sealing block and leak hole sealing block realize the leak protection effect.

As a preferred embodiment, even emission mechanism includes filter and end plate, the end plate is fixed to be set up separator inner wall top and below, the filter sets up and is being close to separator both ends position department, be equipped with the bar groove on the end plate, through the even emission mechanism that sets up, when discharging, open useless aromatic hydrocarbon calandria or hydrogen peroxide calandria, let the liquid of relevant position discharge, when hydrogen peroxide in the below is discharged, hydrogen peroxide passes the bar groove on the end plate and passes the filter for liquid evenly separates out from the filter, avoids concentrating and discharges fast from the calandria position periphery, causes the phenomenon that upper liquid was also concentrated the discharge fast.

As a preferred implementation mode, the inside top of mixing tower is equipped with first annular spray tube, first annular spray tube with extract feed inlet intercommunication sets up, the shower nozzle on the first annular spray tube sets up downwards, through the first annular spray tube of setting, is convenient for evenly spray the extract downwards.

As a preferred implementation mode, be located first annular spray tube below be equipped with the second annular spray tube in the mixing tower, first annular spray tube with second annular spray tube symmetry sets up, the second annular spray tube with the connecting pipe intercommunication sets up, the shower nozzle on the second annular spray tube sets up through first annular spray tube and second annular spray tube symmetry for first annular spray tube spun extract can fully contact the mixture with the aromatic hydrocarbon.

As a preferred embodiment, the packing layer is arranged below the second annular nozzle, and the packing layer is provided in plurality, and the mixed liquid can flow downwards through the packing layer until flowing into the separating tower through the arranged packing layer.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. when the mixed liquid flows to the separating tower after mixing, the mixed liquid is firstly dropped into the separating tower to be stored through the bushing, the baffle is driven after the mixed liquid is stored to a certain volume, the bushing is blocked by the baffle, the mixed liquid which continuously flows downwards is temporarily stored above the baffle, after standing for a period of time to be layered, aromatic hydrocarbon and hydrogen peroxide are sequentially discharged from a waste aromatic hydrocarbon calandria and a hydrogen peroxide calandria, and the liquid in the separating tower is enabled to stand by separating the separating tower from the mixed tower through the separation plate, so that the effect of good layering is achieved, and the separation is facilitated.

2. The utility model reduces the phenomenon that liquid which is not the layer is rapidly rolled up and discharged at the position of a discharge opening due to the pressure effect by the uniformly discharging mechanism.

Drawings

FIG. 1 is a perspective view of a purification device for a fluidized bed hydrogen peroxide production product provided by the utility model;

FIG. 2 is a schematic diagram of the internal structure of a purification device for producing products by using fluidized bed hydrogen peroxide;

FIG. 3 is a schematic diagram showing the assembly of a baffle plate and a bushing plate for a purification device for producing products by using hydrogen peroxide in a fluidized bed;

FIG. 4 is a schematic diagram showing the assembly of a first annular tube and a second annular tube for a purification device for producing products by using hydrogen peroxide in a fluidized bed;

fig. 5 is a schematic diagram showing the assembly of an end plate and a filter plate of a purification device for producing products by using hydrogen peroxide in a fluidized bed.

Legend description:

1. a storage tower; 2. a mixing tower; 3. a separation tower; 4. a connecting pipe; 5. a filler layer; 6. an extract feed inlet; 7. a bushing; 8. a baffle; 9. waste arene calandria; 10. hydrogen peroxide discharge pipes; 11. an anti-corrosion waterproof motor; 12. a sealing block; 13. a filter plate; 14. an end plate; 15. a bar-shaped groove; 16. a first annular nozzle; 17. and the second annular spray pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a be used for fluidized bed hydrogen peroxide production product purifier, including purifying the tower body, inside top-down of purifying the tower body is equipped with storage tower 1 in proper order, mix tower 2 and separator 3, storage tower 1 stores has aromatic hydrocarbon, storage tower 1 and mix tower 2 lower extreme one side and pass through connecting pipe 4 intercommunication setting, the intercommunication is equipped with the aromatic hydrocarbon pump on the connecting pipe 4, be equipped with packing layer 5 in the mix tower 2, mix tower 2 upper end one side and be equipped with extract feed inlet 6, be equipped with bushing 7 in the separator 3, baffle 8 and even emission mechanism, bushing 7 and baffle 8 all set up in the inside top of separator 3, baffle 8 slides and sets up in bushing 7 below, be equipped with useless aromatic hydrocarbon calandria 9 and hydrogen peroxide calandria 10 on separator 3 top and the below lateral wall respectively, even emission mechanism is equipped with two and is located useless aromatic hydrocarbon calandria 9 and hydrogen peroxide calandria 10 position department respectively.

As shown in fig. 1-5, the waste aromatic hydrocarbon calandria 9 is arranged below the baffle plate 8, the side wall of the baffle plate 7 is fixedly arranged on the inner wall of the separation tower 3, a plurality of leak holes are uniformly formed in the baffle plate 7, the baffle plate 8 is arranged below the baffle plate 7 in an adjustable sliding manner, through holes which are communicated with the leak holes are formed in the baffle plate 8, when mixed liquid is dripped into the separation tower 3, the through holes in the baffle plate 8 are communicated with the leak holes up and down, liquid passes through the baffle plate 7 and the baffle plate 8 to enter the separation tower 3, if the liquid in the separation tower 3 is full, the baffle plate 8 can be driven through, so that the leak holes are staggered with the through holes, and the liquid cannot continuously flow downwards.

As shown in fig. 1-5, the center position of the baffle plate 8 is rotationally connected with the center position below the bushing plate 7, the bushing plate 7 is provided with an anti-corrosion waterproof motor 11, the baffle plate 8 is driven by the anti-corrosion waterproof motor 11, a sealing block 12 is arranged above the baffle plate 8, the sealing block 12 is in sealing clamping connection with the leak hole on the bushing plate 7, the baffle plate 8 is driven to rotate by driving the anti-corrosion waterproof motor 11, and the sealing block 12 can be moved to the position right below the leak hole, so that the sealing block 12 is in sealing clamping connection with the leak hole, and a leak-proof effect is realized.

As shown in fig. 1-5, the uniform discharge mechanism comprises a filter plate 13 and an end plate 14, the end plate 14 is fixedly arranged above and below the inner wall of the separation tower 3, the filter plate 13 is arranged at positions close to two ends of the separation tower 3, strip-shaped grooves 15 are formed in the end plate 14, when the uniform discharge mechanism is arranged, the waste aromatic hydrocarbon discharge pipe 9 or the hydrogen peroxide discharge pipe 10 is opened to discharge liquid at corresponding positions, for example, when hydrogen peroxide positioned below is discharged, the hydrogen peroxide passes through the strip-shaped grooves 15 on the end plate 14 and passes through the filter plate 13, so that the liquid is uniformly separated out from the filter plate 13, and the phenomenon that the liquid on the upper layer is discharged in a concentrated manner is avoided from being discharged from the periphery of the discharge pipe position rapidly.

As shown in fig. 1-5, a first annular spray pipe 16 is arranged above the interior of the mixing tower 2, the first annular spray pipe 16 is communicated with the extraction liquid feed inlet 6, a spray head on the first annular spray pipe 16 is arranged downwards, and the extraction liquid is conveniently and uniformly sprayed downwards through the arranged first annular spray pipe 16.

As shown in fig. 1-5, a second annular spray pipe 17 is arranged in the mixing tower 2 below the first annular spray pipe 16, the first annular spray pipe 16 and the second annular spray pipe 17 are symmetrically arranged, the second annular spray pipe 17 is communicated with the connecting pipe 4, and a spray head on the second annular spray pipe 17 is upwards arranged, so that the extract liquid sprayed by the first annular spray pipe 16 can be fully contacted and mixed with aromatic hydrocarbon through the symmetrical arrangement of the first annular spray pipe 16 and the second annular spray pipe 17.

As shown in fig. 1-5, a packing layer 5 is arranged below the second annular nozzle 17, and a plurality of packing layers 5 are arranged, through which packing layers 5 the mixed liquid is facilitated to flow downwards through the packing layers 5 until it flows into the separation column 3.

Working principle: when the extraction liquid is purified, an aromatic hydrocarbon pump is started, aromatic hydrocarbon in the storage tower 1 is conveyed into the mixing tower 2 through the connecting pipe 4, the extraction liquid is led into the mixing tower 2 from the extraction liquid feed port 6, the extraction liquid is mixed through the packing layer 5, the mixed liquid flows downwards into the separation tower 3, wherein the model of the aromatic hydrocarbon pump is a WXB102-48 aromatic hydrocarbon conveying pump, the aromatic hydrocarbon is conveyed from bottom to top in the mixing tower 2, when flowing into the separation tower 3 after mixing, the aromatic hydrocarbon is firstly dropped into the separation tower 3 to be stored through the bushing 7, after the mixed liquid is stored to a certain volume, the baffle 8 is driven, the bushing 7 is blocked through the baffle 8, the mixed liquid which continuously flows downwards is temporarily stored above the baffle 8, after standing for a period of time and layering, the aromatic hydrocarbon and hydrogen peroxide are sequentially discharged from the waste aromatic hydrocarbon calandria waste calandria 9 and a calandria 10, and in the discharging process, and the phenomenon that the liquid which is not rolled up on the calandria layer is rapidly discharged due to the pressure effect at the position of the discharge port is reduced through a uniformly discharging mechanism.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The utility model provides a be used for fluidized bed hydrogen peroxide production product purifier, includes the purification tower body, its characterized in that, inside top-down of purification tower is equipped with storage tower (1), mixing tower (2) and separator (3) in proper order, aromatic hydrocarbon has been stored in storage tower (1), storage tower (1) with mixing tower (2) lower extreme one side is through connecting pipe (4) intercommunication setting, the intercommunication is equipped with the aromatic hydrocarbon pump on connecting pipe (4), be equipped with packing layer (5) in mixing tower (2), mixing tower (2) upper end one side is equipped with extract feed inlet (6), be equipped with bushing (7), baffle (8) and even discharge mechanism in separator (3), bushing (7) with baffle (8) all set up the inside top of separator (3), baffle (8) slide and set up bushing (7) below, be equipped with useless aromatic hydrocarbon (9) and hydrogen peroxide solution (10) on separator (3) top and the below lateral wall respectively, even discharge mechanism is equipped with two and just are located useless calandria hydrogen peroxide solution (10) position respectively.

2. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 1, wherein: the utility model discloses a separating tower, including baffle (8), baffle (8) are in waste arene calandria (9) set up baffle (8) below, bushing (7) lateral wall is fixed to be set up on the inner wall of separating tower (3), evenly be equipped with a plurality of holes on bushing (7), baffle (8) adjustable slip setting is in bushing (7) below, be equipped with on baffle (8) with the through-hole that the hole intercommunication set up.

3. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 2, wherein: the center position of the baffle (8) is rotationally connected with the center position of the lower part of the bushing plate (7), an anti-corrosion waterproof motor (11) is arranged on the bushing plate (7), the baffle (8) is driven by the anti-corrosion waterproof motor (11), a sealing block (12) is arranged above the baffle (8), and the sealing block (12) is in sealing clamping connection with the leak hole on the bushing plate (7).

4. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 1, wherein: the uniform discharge mechanism comprises a filter plate (13) and an end plate (14), wherein the end plate (14) is fixedly arranged above and below the inner wall of the separation tower (3), the filter plate (13) is arranged at the positions close to the two ends of the separation tower (3), and a strip-shaped groove (15) is formed in the end plate (14).

5. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 1, wherein: the upper part inside of the mixing tower (2) is provided with a first annular spray pipe (16), the first annular spray pipe (16) is communicated with the extraction liquid feed inlet (6), and a spray head on the first annular spray pipe (16) is downwards arranged.

6. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 5, wherein: the mixing tower (2) is internally provided with a second annular spray pipe (17) below the first annular spray pipe (16), the first annular spray pipe (16) and the second annular spray pipe (17) are symmetrically arranged, the second annular spray pipe (17) is communicated with the connecting pipe (4), and a spray head on the second annular spray pipe (17) is upwards arranged.

7. The purification device for producing products by using fluidized bed hydrogen peroxide according to claim 6, wherein: the packing layer (5) is arranged below the second annular spray pipe (17), and a plurality of packing layers (5) are arranged.