CN215463163U

CN215463163U - Membrane method recovery type polypropylene tail gas treatment device

Info

Publication number: CN215463163U
Application number: CN202121616008.2U
Authority: CN
Inventors: 钟建明
Original assignee: Zhejiang Shaoxing Sanjin Petrochemical Co ltd
Current assignee: Zhejiang Shaoxing Sanjin Petrochemical Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-01-11
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a membrane-method recovery type polypropylene tail gas treatment device which comprises a shell, a cavity and a cooling cavity, wherein support columns are arranged on two sides of the bottom end of the shell, a liquid outlet is arranged at the bottom end of the shell, a cover plate is arranged at the top end of the shell, the cooling cavity is arranged at the top end inside the shell, a liquid inlet is arranged at the top end of one side of the cooling cavity, a condensing pipe is arranged inside the cooling cavity, a liquid outlet is arranged at one end of the condensing pipe, the cavity is arranged at the bottom end of the cooling cavity, a membrane separation assembly is arranged inside the cavity, and an air inlet is arranged at the bottom end of one side of the membrane separation assembly. According to the utility model, the filter screen is arranged in the air inlet, under the action of the filter screen, particle dust carried in tail gas can be filtered, the separation of the particle dust and the tail gas is realized, and the filter screen can be pulled out from the air inlet by utilizing the sliding relation between the sliding block and the sliding groove, so that the filter screen is convenient to replace or clean.

Description

Membrane method recovery type polypropylene tail gas treatment device

Technical Field

The utility model relates to the technical field of polypropylene tail gas treatment, in particular to a membrane-method recovery type polypropylene tail gas treatment device.

Background

With the rapid increase of the economic level, polypropylene is widely used, the polypropylene is a semi-crystalline thermoplastic plastic with high impact resistance and resistance to various organic solvents and acid-base corrosion, and in the production process of polypropylene, a membrane separation component is required to separate tail gas, and then separated gas-phase propylene is condensed into liquid-phase propylene.

The patent specification with the publication number of CN210751988U discloses a membrane recovery device for tail gas in polypropylene production, which comprises an outer cylinder and an inner cylinder, wherein a clamping cavity is formed between the outer cylinder and the inner cylinder, a lower mounting plate and an upper mounting plate are mounted in the clamping cavity, the two mounting plates are of annular structures, the clamping cavity between the outer cylinder and the inner cylinder is sequentially divided into a tail gas diversion cavity, a tail gas separation cavity and a gas collection cavity from bottom to top by the two mounting plates, the tail gas separation cavity is an annular clamping cavity, and a plurality of vertically arranged membrane separation components are mounted in the clamping cavity; the inner part of the inner cylinder is provided with a condensation cavity, and a condensation pipe in a spiral structure is arranged in the condensation cavity; the membrane recovery device provided by the utility model can avoid the sealing leakage of the membrane separation assembly in the recovery process of the polypropylene tail gas, and ensure that the propylene gas cannot leak; the membrane separation system and the condensation system are integrally arranged, the integral structure is compact and reasonable, and the occupied space is small.

The prior art scheme among the above-mentioned has the shortcoming, and tail gas processing apparatus is not convenient for wash, has increased the washing degree of difficulty of device to a certain extent, influences the availability factor of device.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a membrane-method recovery type polypropylene tail gas treatment device, which is used for solving the defect that the existing tail gas treatment device is inconvenient to clean.

(II) contents of utility model

In order to solve the technical problems, the utility model provides the following technical scheme: a membrane method recovery type polypropylene tail gas treatment device comprises a shell, a chamber and a cooling cavity, wherein support columns are arranged on two sides of the bottom end of the shell, a liquid outlet is arranged at the bottom end of the shell, a cover plate is arranged at the top end of the shell, a cooling cavity is arranged at the top end in the shell, a liquid inlet is arranged at the top end of one side of the cooling cavity, a condensing pipe is arranged in the cooling cavity, and one end of the condensation pipe is provided with a liquid outlet, the bottom end of the cooling cavity is provided with a cavity, the interior of the cavity is provided with a membrane separation component, the bottom end of one side of the membrane separation component is provided with an air inlet, the top end of the other side of the membrane separation component is provided with a first air outlet, the top end of one side of the cavity is provided with a fixed pipe, and one end of the fixed pipe is connected with the other end of the condensing pipe, and a cleaning mechanism is arranged at the top end inside the cavity.

Preferably, the both sides of apron all are provided with fixed knot and construct, fixed knot constructs including spacing groove, gag lever post, expanding spring and pull ring, the both sides at the apron are all installed to the pull ring, the gag lever post is all installed to the bottom of pull ring, and the spacing groove is all installed to the bottom of gag lever post, expanding spring is all installed to the both sides of pull ring bottom.

Preferably, the telescopic springs are symmetrically arranged and are symmetrically distributed around the vertical center of the pull ring.

Preferably, wiper mechanism is including water pump, connecting pipe, shower nozzle and cavity, the top at the cavity inside is installed to the cavity, the shower nozzle is evenly installed to the bottom of cavity, the water pump is installed to one side of cavity, and the connecting pipe is all installed to the top and the bottom of water pump, the one end of connecting pipe is connected with one side in cooling chamber, the other end of connecting pipe is connected with one side of cavity.

Preferably, the spray heads are all located in the same horizontal plane, and the spray heads are arranged at the bottom end of the cavity at equal intervals.

Preferably, the inside of air inlet is provided with filtration, filtration is including filter screen, slider and spout, the inside at the air inlet is installed to the filter screen, the slider is all installed at the both ends of filter screen, and the spout is all installed to the one end of slider.

Preferably, the outer diameter of the sliding block is smaller than the inner diameter of the sliding groove, and the sliding block and the sliding groove form a sliding structure.

(III) advantageous effects

The membrane method recovery type polypropylene tail gas treatment device provided by the utility model has the advantages that:

(1) the water pump is started through the water pump arranged on one side of the shell, under the action of the water pump, cooling water in the cooling cavity can enter the cavity through the connecting pipe and is used by the spray head, and the spray head can spray the cooling water to the inside of the cavity, so that the inside of the cavity is cleaned, and the cleaning burden of workers is reduced;

(2) the filter screen is arranged in the air inlet, under the action of the filter screen, particle dust carried in tail gas can be filtered, the separation of the particle dust and the tail gas is realized, and the filter screen can be pulled out from the air inlet by utilizing the sliding relation between the sliding block and the sliding chute, so that the filter screen is convenient to replace or clean;

(3) through the pull ring at apron both sides installation, when the inside of casing needs the maintenance, pulling pull ring, expanding spring is stretched, and gag lever post and spacing groove loosen each other and take off, remove the fixed restriction between apron and the casing, alright take off the apron, maintain the inside of casing.

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 description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic three-dimensional structure of the air inlet of the present invention;

FIG. 3 is a schematic view of a portion of the cleaning mechanism of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 5 is a partial structure diagram of the filter structure of the present invention.

The reference numerals in the figures illustrate: 1. a fixed structure; 101. a limiting groove; 102. a limiting rod; 103. a tension spring; 104. a pull ring; 2. a liquid inlet; 3. a housing; 4. a first air outlet; 5. a chamber; 6. a support pillar; 7. a liquid discharge port; 8. a membrane separation module; 9. an air inlet; 10. a cleaning mechanism; 1001. a water pump; 1002. a connecting pipe; 1003. a spray head; 1004. a cavity; 11. a fixed tube; 12. a condenser tube; 13. a liquid outlet; 14. a cooling chamber; 15. a cover plate; 16. a filter structure; 1601. a filter screen; 1602. a slider; 1603. a chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, an embodiment of the present invention is shown: a membrane method recovery type polypropylene tail gas treatment device comprises a shell 3, a cavity 5 and a cooling cavity 14, wherein support columns 6 are arranged on two sides of the bottom end of the shell 3, a liquid outlet 7 is arranged at the bottom end of the shell 3, a cover plate 15 is arranged at the top end of the shell 3, fixing structures 1 are arranged on two sides of the cover plate 15, each fixing structure 1 comprises a limiting groove 101, a limiting rod 102, a telescopic spring 103 and a pull ring 104, the pull rings 104 are arranged on two sides of the cover plate 15, the limiting rods 102 are arranged at the bottom ends of the pull rings 104, the limiting grooves 101 are arranged at the bottom ends of the limiting rods 102, the telescopic springs 103 are arranged on two sides of the bottom ends of the pull rings 104, the telescopic springs 103 are symmetrically arranged, the telescopic springs 103 are symmetrically distributed about the vertical center of the pull rings 104, the stability is enhanced, when the interior of the shell 3 needs maintenance, the pull rings 104 are pulled, the telescopic springs 103 are stretched, the limiting rods 102 and the limiting grooves 101 are loosened, the fixing restriction between the cover plate 15 and the housing 3 is released, and the cover plate 15 can be taken down to maintain the interior of the housing 3;

a cooling cavity 14 is installed at the top end inside the shell 3, a liquid inlet 2 is installed at the top end of one side of the cooling cavity 14, a condenser pipe 12 is installed inside the cooling cavity 14, a liquid outlet 13 is installed at one end of the condenser pipe 12, a cavity 5 is installed at the bottom end of the cooling cavity 14, a membrane separation assembly 8 is installed inside the cavity 5, an air inlet 9 is installed at the bottom end of one side of the membrane separation assembly 8, a filter structure 16 is arranged inside the air inlet 9, the filter structure 16 comprises a filter screen 1601, a slider 1602 and a chute 1603, the filter screen 1601 is installed inside the air inlet 9, sliders 1602 are installed at two ends of the filter screen 1601, the chute 1603 is installed at one end of each slider 1602, the outer diameter of each slider 1602 is smaller than the inner diameter of the chute 1603, each slider 1602 and each chute 1603 form a sliding structure, replacement or cleaning is convenient, when tail gas enters the inside of the air inlet 9, particle dust carried in the tail gas can be filtered under the action of the filter screen 1601, the separation of the particle dust and the tail gas is realized, and the filter screen 1601 can be pulled out from the inside of the air inlet 9 by utilizing the sliding relation between the sliding block 1602 and the sliding chute 1603, so that the filter screen 1601 is convenient to replace or clean;

the top end of the other side of the membrane separation assembly 8 is provided with a first air outlet 4, the top end of one side of the chamber 5 is provided with a fixed pipe 11, one end of the fixed pipe 11 is connected with the other end of the condensation pipe 12, the top end of the inside of the chamber 5 is provided with a cleaning mechanism 10, the cleaning mechanism 10 comprises a water pump 1001, a connecting pipe 1002, a spray head 1003 and a cavity 1004, the cavity 1004 is arranged at the top end of the inside of the chamber 5, the spray head 1003 is uniformly arranged at the bottom end of the cavity 1004, the water pump 1001 is arranged at one side of the cavity 1004, the model of the water pump 1001 can be KLD-091P, the input end of the water pump 1001 is electrically connected with the output end of the control panel, the connecting pipes 1002 are arranged at the top end and the bottom end of the water pump 1001, one end of the connecting pipe 1002 is connected with one side of the cooling chamber 14, the other end of the connecting pipe 1002 is connected with one side of the cavity 1004, the spray heads 1003 are all positioned in the same horizontal plane, the spray heads 1003 are arranged at equal intervals at the bottom end of the cavity 1004, improve cleaning efficiency, tail gas after the filtration gets into the inside of membrane separation subassembly 8 by air inlet 9 and separates, the ammonia after the separation is exported by first gas outlet 4, the inside that the gaseous propylene that separates gets into condenser pipe 12 by fixed pipe 11 condenses, with gaseous propylene condensation for liquid phase propylene, liquid phase propylene is exported by liquid outlet 13, cooling water gets into the inside of cooling chamber 14 by inlet 2 in the condensation process, after the condensation is accomplished, start water pump 1001, under the effect of water pump 1001, the inside cooling water of cooling chamber 14 can get into the inside of cavity 1004 by connecting pipe 1002, supply shower nozzle 1003 to use, shower nozzle 1003 can spray cooling water to the inside of cavity 5, thereby wash the inside of cavity 5, alleviate staff's washing burden, water after the washing is discharged by outage 7.

The working principle is as follows: when the device is used, an external power supply is adopted, firstly, when tail gas enters the air inlet 9, particle dust carried in the tail gas can be filtered under the action of the filter screen 1601, the separation of the particle dust and the tail gas is realized, and the filter screen 1601 can be pulled out from the inside of the air inlet 9 by utilizing the sliding relation between the sliding block 1602 and the sliding chute 1603, so that the filter screen 1601 is convenient to replace or clean;

secondly, the filtered tail gas enters the interior of the membrane separation assembly 8 from the gas inlet 9 for separation, the separated ammonia gas is output from the first gas outlet 4, the separated propylene gas enters the interior of the condensation pipe 12 from the fixed pipe 11 for condensation, the gas-phase propylene is condensed into liquid-phase propylene, the liquid-phase propylene is output from the liquid outlet 13, cooling water enters the interior of the cooling cavity 14 from the liquid inlet 2 in the condensation process, after the condensation is finished, the water pump 1001 is started, the cooling water in the interior of the cooling cavity 14 can enter the interior of the cavity 1004 from the connecting pipe 1002 under the action of the water pump 1001 for use by the spray head 1003, the spray head 1003 can spray the cooling water to the interior of the cavity 5, so that the interior of the cavity 5 is cleaned, the cleaning burden of workers is reduced, and the cleaned water is discharged from the liquid discharge port 7;

finally, when the interior of the housing 3 needs to be repaired, the pull ring 104 is pulled, the extension spring 103 is extended, the stopper rod 102 and the stopper groove 101 are released from each other, the fixing restriction between the cover plate 15 and the housing 3 is released, and the cover plate 15 can be removed to repair the interior of the housing 3.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a membrane method recovery type polypropylene tail gas processing apparatus, includes casing (3), cavity (5) and cooling chamber (14), its characterized in that: supporting columns (6) are mounted on two sides of the bottom end of the shell (3), a liquid discharge port (7) is mounted at the bottom end of the shell (3), a cover plate (15) is mounted at the top end of the shell (3), and a cooling cavity (14) is mounted at the top end inside the shell (3);

a liquid inlet (2) is mounted at the top end of one side of the cooling cavity (14), a condensation pipe (12) is mounted inside the cooling cavity (14), a liquid outlet (13) is mounted at one end of the condensation pipe (12), and a cavity (5) is mounted at the bottom end of the cooling cavity (14);

the inside mounting of cavity (5) has membrane separation subassembly (8), air inlet (9) are installed to the bottom of membrane separation subassembly (8) one side, first gas outlet (4) are installed on the top of membrane separation subassembly (8) opposite side, fixed pipe (11) are installed on the top of cavity (5) one side, and the one end of fixed pipe (11) is connected with the other end of condenser pipe (12), the inside top of cavity (5) is provided with wiper mechanism (10).

2. The membrane-process recycling type polypropylene tail gas treatment device according to claim 1, wherein: the utility model discloses a safety protection device, including apron (15), fixed knot constructs (1) and pull ring (104), the both sides of apron (15) all are provided with fixed knot and construct (1), fixed knot constructs (1) and includes spacing groove (101), gag lever post (102), expanding spring (103) and pull ring (104), the both sides at apron (15) are all installed in pull ring (104), gag lever post (102) are all installed to the bottom of pull ring (104), and gag lever post (101) are all installed to the bottom of gag lever post (102), expanding spring (103) are all installed to the both sides of pull ring (104) bottom.

3. The membrane-process recycling type polypropylene tail gas treatment device according to claim 2, wherein: the telescopic springs (103) are symmetrically arranged, and the telescopic springs (103) are symmetrically distributed around the vertical center of the pull ring (104).

4. The membrane-process recycling type polypropylene tail gas treatment device according to claim 1, wherein: the cleaning mechanism (10) comprises a water pump (1001), a connecting pipe (1002), a spray head (1003) and a cavity (1004), wherein the cavity (1004) is arranged at the top end inside the cavity (5), the spray head (1003) is uniformly arranged at the bottom end of the cavity (1004), the water pump (1001) is arranged on one side of the cavity (1004), the connecting pipe (1002) is arranged at the top end and the bottom end of the water pump (1001), one end of the connecting pipe (1002) is connected with one side of the cooling cavity (14), and the other end of the connecting pipe (1002) is connected with one side of the cavity (1004).

5. The membrane-process recycling type polypropylene tail gas treatment device according to claim 4, wherein: the spray heads (1003) are all located in the same horizontal plane, and the spray heads (1003) are arranged at the bottom end of the cavity (1004) at equal intervals.

6. The membrane-process recycling type polypropylene tail gas treatment device according to claim 1, wherein: the inside of air inlet (9) is provided with filtration (16), filtration (16) are including filter screen (1601), slider (1602) and spout (1603), the inside at air inlet (9) is installed in filter screen (1601), slider (1602) are all installed at the both ends of filter screen (1601), and spout (1603) are all installed to the one end of slider (1602).

7. The membrane-process recycling type polypropylene tail gas treatment device according to claim 6, wherein: the outer diameter of the sliding block (1602) is smaller than the inner diameter of the sliding groove (1603), and the sliding block (1602) and the sliding groove (1603) form a sliding structure.