CN214233529U

CN214233529U - Butane method maleic anhydride tail gas processing apparatus

Info

Publication number: CN214233529U
Application number: CN202121987001.1U
Authority: CN
Inventors: 许冬来; 李靖; 李希财
Original assignee: Shandong Qifa Chemical Co ltd
Current assignee: Shandong Qifa Chemical Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-09-21
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a butane method maleic anhydride tail gas processing apparatus, which relates to the technical field of tail gas processing, and comprises a washing tower, a gas inlet pipe I, a first communicating pipe, a reaction chamber, a supporting frame and a connecting shell, wherein the first gas inlet pipe is communicated with one end part of the washing tower, the supporting frame is arranged on one side of the washing tower, the reaction chamber and the connecting shell are arranged on the supporting frame, the washing tower is communicated with the connecting shell through the first communicating pipe, a dispersing component for dispersing gas is arranged between the connecting shell and the reaction chamber, the top of the reaction chamber is communicated with a heat exchanger and an exhaust pipe, the side wall of the reaction chamber is communicated with a second gas inlet pipe for introducing oxygen, the maleic anhydride tail gas is dephosphorized when entering the washing tower through the first gas inlet pipe, the tail gas sequentially enters the connecting shell through the first communicating pipe, the dispersing component and the reaction chamber, the tail gas is subjected to oxidation reaction in the reaction chamber, the gas after the reaction passes through the heat exchanger, and is discharged through the exhaust pipe.

Description

Butane method maleic anhydride tail gas processing apparatus

Technical Field

The utility model relates to a tail gas treatment technical field, concretely relates to butane method maleic anhydride tail gas processing apparatus.

Background

The production process of maleic anhydride includes benzene method and butane method. The main components of the butane-method maleic anhydride tail gas are nitrogen, oxygen, water vapor and carbon dioxide, the tail gas of the existing butane-method maleic anhydride device is generally directly discharged at a high point by a chimney, so that the environment is seriously polluted, when the butane-method maleic anhydride is prepared, the tail gas also contains a small amount of phosphorus, the phosphorus easily causes poisoning of a catalyst, and when the tail gas is subjected to catalytic oxidation reaction, the contact between the tail gas and the catalyst is insufficient, so that the utilization rate of the catalyst is low, the reaction rate is slow, and the timely treatment of the maleic anhydride tail gas is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims at providing a butane method maleic anhydride tail gas treatment device.

In order to achieve the technical purpose, the utility model adopts the following technical scheme.

A butane method maleic anhydride tail gas processing apparatus includes:

the device comprises a washing tower, a reaction chamber, a support frame and a connecting shell; the support frame is arranged on one side of the washing tower, the reaction chamber and the connecting shell are arranged on the support frame, and the reaction chamber is positioned above the connecting shell; the air inlet pipe I and the communicating pipe I are also included; the first air inlet pipe is communicated with one end part of the washing tower; the washing tower is communicated with the connecting shell through a first communicating pipe, a one-way valve is arranged on the first communicating pipe, a dispersing assembly used for dispersing gas is arranged between the connecting shell and the reaction chamber, the top of the reaction chamber is communicated with an exhaust pipe, and the side wall of the reaction chamber is communicated with a second air inlet pipe used for introducing oxygen; and a catalyst plate is horizontally arranged in the reaction chamber.

As a further improvement of the utility model, a heater is arranged in the reaction chamber; the dispersion subassembly including installation casing, two communicating pipes, air inlet housing, the installation casing communicates in the bottom of reacting chamber, set up air inlet housing in the installation casing, air inlet housing is both ends confined cylinder structure, and the bottom sets up the inlet port, and the top sets up the exhaust hole, and air inlet housing's upper end stretches into to the reacting chamber, and the exhaust hole is close to air inlet housing's border setting, through two intercommunications of communicating pipe between installation casing and the connection casing, air inlet housing's bottom vertical be provided with the pivot, the pivot stretches into to the connection casing in, the vertical thumb wheel that is provided with in the connection casing, the thumb wheel and the coaxial fixed connection of pivot.

As a further improvement, the exhaust pipe on the intercommunication have a heat exchanger, the lateral wall department of reaction chamber evenly is provided with a plurality of thermal-collecting tubes, through three intercommunications of communicating pipe between reaction chamber and the thermal-collecting tube.

As a further improvement, the reaction chamber is internally provided with a plurality of air diffusing pipes which are arranged below the catalyst plate and communicated with the air inlet pipe II.

Compared with the prior art, the utility model, the progress and the advantage that gain lie in the utility model discloses in the use, turn into carbon dioxide and water with harmful volatile organic compounds in butane method maleic anhydride device tail gas, be favorable to the environmental protection, it is pollution-free, it rotates as the power promotion casing that admits air through tail gas, gaseous through installation casing and with admit air the casing buffering, can be even get into to the reacting chamber in, thereby make gaseous and catalyst board fully contact, thereby improve the utilization efficiency of catalyst board, therefore, catalytic oxidation reaction rate has been improved, be favorable to carrying out rapid processing to maleic anhydride tail gas, and energy-concerving and environment-protective more.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the connection between the connection housing and the dispersing assembly of the present invention.

Fig. 3 is a schematic view of the installation of the dispersing assembly of the present invention.

Fig. 4 is a schematic view of the air inlet housing and the mounting housing of the present invention.

Fig. 5 is a schematic view of the installation of the thumb wheel of the present invention.

Labeled as:

1. a washing tower; 2. a first air inlet pipe; 3. a first communicating pipe; 4. a one-way valve; 5. a reaction chamber; 6. a support frame; 7. connecting the shell; 8. a heat exchanger; 9. an exhaust pipe; 10. a dispersion assembly; 11. a second air inlet pipe; 12. a catalyst plate; 13. installing a shell; 14. a second communicating pipe; 15. a rotating shaft; 16. an air intake housing; 17. an air inlet; 18. an exhaust hole; 19. a thumb wheel; 20. a heat collecting pipe; 21. a third communicating pipe; 22. an air dispersing pipe.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, a butane method maleic anhydride tail gas treatment device comprises:

scrubbing tower 1, intake pipe 2, communicating pipe 3, reaction chamber 5, support frame 6, connection casing 7, intake pipe 2 communicate in a tip of scrubbing tower 1, support frame 6 set up in one side of scrubbing tower 1, reaction chamber 5, connect casing 7 and install on support frame 6, reaction chamber 5 is in the top of connecting casing 7, scrubbing tower 1 and connect and be provided with check valve 4 through communicating pipe 3 intercommunication between the casing 7 on communicating pipe 3, connection casing 7 and reaction chamber 5 between be provided with the dispersion subassembly 10 that carries out the dispersion to gas, reaction chamber 5's top intercommunication have heat exchanger 8 and blast pipe 9, reaction chamber 5's lateral wall department intercommunication has intake pipe two 11 that is used for letting in oxygen.

Maleic anhydride tail gas enters a washing tower 1 through a gas inlet pipe I2 for dephosphorization treatment, and the treated tail gas sequentially enters a connecting shell 7 and a dispersing assembly 10 through a communicating pipe I3.

Connect the inside thumb wheel 19 that sets up of casing 7, dispersion subassembly 10 is including installation casing 13, communicating pipe two 14, air inlet housing 16, installation casing 13 communicates in the bottom of reacting chamber 5, air inlet housing 16 sets up in installation casing 13, air inlet housing 16 is both ends confined cylinder structure, air inlet housing 16 bottom is provided with inlet port 17, the top is provided with exhaust hole 18, air inlet housing 16's upper end stretches into to the reacting chamber 5 in, exhaust hole 18 is close to air inlet housing 16's border, install casing 13 and connect and communicate through communicating pipe two 14 between the casing 7, air inlet housing 16's the vertical pivot 15 that is provided with in bottom, pivot 15 stretches into to connecting in the casing 7, thumb wheel 19 and pivot 15 fixed connection.

Tail gas enters the connecting shell 7, the thumb wheel 19 is pushed to rotate, the tail gas and the rotating shaft 15 fixedly connected with the thumb wheel 19 rotate synchronously, so that the air inlet shell 16 is driven to rotate, the tail gas enters the mounting shell 13 through the second communicating pipe 14 and enters the air inlet shell 16 through the air inlet hole 17, and in the rotating process of the shell 16, the tail gas is uniformly discharged from the air outlet hole 18 and enters the reaction chamber 5.

The reaction chamber 5 is internally provided with a reaction heater and a catalyst plate 12, the catalyst plate 12 is horizontally arranged, the side wall of the reaction chamber 5 is uniformly provided with a plurality of heat collecting pipes 20, the heat collecting pipes 20 are communicated with a communicating pipe III 21, and in the catalytic reaction process, the waste heat of the gas discharged from the reaction chamber enters the heat collecting pipes 20 from the communicating pipe III 21 through a heat exchanger 8 for heating the reaction chamber 5, so that energy is saved.

A plurality of air diffusing pipes 22 are further arranged in the reaction chamber 5, the air diffusing pipes 22 are positioned below the catalyst plate 12, the air diffusing pipes 22 are communicated with the second air inlet pipe 11, and a plurality of air outlet holes are uniformly formed in the air diffusing pipes 22 to provide sufficient oxygen for the reaction chamber 5.

The gas heat-recovered by the heat exchanger 8 is discharged through the exhaust pipe 9.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A butane method maleic anhydride tail gas treatment device comprises a washing tower, a reaction chamber, a support frame and a connecting shell; the device is characterized by also comprising a first air inlet pipe and a first communicating pipe; the first air inlet pipe is communicated with one end part of the washing tower; the washing tower is communicated with the connecting shell through a first communicating pipe, a one-way valve is arranged on the first communicating pipe, a dispersing assembly for dispersing gas is arranged between the connecting shell and the reaction chamber, the top of the reaction chamber is communicated with an exhaust pipe, and the side wall of the reaction chamber is communicated with a second air inlet pipe for introducing oxygen; and a catalyst plate is horizontally arranged in the reaction chamber.

2. The butane method maleic anhydride tail gas treatment device according to claim 1, wherein a heater is arranged in the reaction chamber; the dispersion subassembly including installation casing, two communicating pipes, air inlet housing, the installation casing communicates in the bottom of reacting chamber, set up air inlet housing in the installation casing, air inlet housing is both ends confined cylinder structure, and the bottom sets up the inlet port, and the top sets up the exhaust hole, and air inlet housing's upper end stretches into to the reacting chamber, and the exhaust hole is close to air inlet housing's border setting, through two intercommunications of communicating pipe between installation casing and the connection casing, air inlet housing's bottom vertical be provided with the pivot, the pivot stretches into to the connection casing in, the vertical thumb wheel that is provided with in the connection casing, the thumb wheel and the coaxial fixed connection of pivot.

3. The butane-method maleic anhydride tail gas treatment device according to claim 1, wherein a heat exchanger is communicated with the exhaust pipe.

4. The butane-method maleic anhydride tail gas treatment device according to claim 2, wherein a plurality of air diffusion pipes are arranged in the reaction chamber, the air diffusion pipes are positioned below the catalyst plate, and the air diffusion pipes are communicated with the second air inlet pipe.

5. The butane-method maleic anhydride tail gas treatment device according to claim 3, wherein a plurality of heat collecting pipes are uniformly arranged on the side wall of the reaction chamber, and the reaction chamber is communicated with the heat collecting pipes through a communication pipe III.