CN112920838A

CN112920838A - Naphtha and methanol mixed aromatization device and use method thereof

Info

Publication number: CN112920838A
Application number: CN202110149438.6A
Authority: CN
Inventors: 崔秋生
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-06-08

Abstract

The invention discloses a naphtha and methanol mixed aromatization device and a using method thereof, the device comprises a plurality of hollow spheres with deformation capacity, naphtha is contained in the hollow spheres, a catalyst layer is arranged on the inner wall of the hollow sphere positioned on the outermost layer, catalyst layers are arranged on the inner wall and the outer wall of the hollow sphere positioned on the inner layer, a plurality of communicating pipes which are uniformly distributed are arranged between the hollow spheres, a container is arranged outside the hollow sphere positioned on the outermost layer, a water source is filled between the container and the hollow sphere positioned on the outermost layer, a cavity is arranged in the container, an external connecting pipe communicated with the cavity is arranged on the container and used for introducing methanol, one end of each communicating pipe penetrates through the hollow sphere positioned on the outermost layer and is communicated with the cavity in the container, and the other end of each communicating pipe is communicated with the hollow sphere positioned on the innermost layer, the device can effectively reduce the problem that a reactor with the traditional structure, the difference of catalytic effect is large due to overlarge temperature drop, and explosion is easy to occur.

Description

Naphtha and methanol mixed aromatization device and use method thereof

Technical Field

The invention relates to the field of oil processing, in particular to a naphtha and methanol mixed aromatization device and a use method thereof.

Background

In the aromatization process of the raw naphtha, the raw material is naphtha. The reaction temperature is 300-380 ℃, the catalyst is cracked and then polymerized again, and multiple cyclization products or isomerization products are generated after polymerization so as to achieve the purpose of improving the octane number of naphtha. The catalyst is endothermic in the whole reaction, the bed layer is filled with 15 m height, and the temperature is reduced by 20 ℃. When the temperature of the top part in the reactor reaches the reaction temperature, the temperature of the middle lower part is lower than the reaction temperature due to the whole reaction temperature drop, so that the activity of the catalyst cannot be completely released. If for adapting to the excessive top temperature that improves of bottom temperature, can lead to the top catalyst reaction temperature too high, cause the naphtha cracking degree too high, the gaseous phase accords with excessively, cause the oil yield to reduce, can lead to the regional temperature difference of reactor different height when adopting traditional reactor, lead to catalytic effect difference great, in case improve the top temperature in the reactor, easily lead to the reaction of reactor the superiors acutely, the gas quantity increases in the twinkling of an eye, make the reactor internal pressure increase rapidly, very easily lead to dangerous situations such as explosion to take place.

Disclosure of Invention

Aiming at the existing problems, the invention aims to solve the technical problems that the traditional reactor can not be uniformly reacted in the same temperature range, the catalytic effect difference is large and explosion is easy to occur due to overlarge temperature drop, the methanol input quantity in different regions can be ensured to be consistent, and the naphtha and methanol mixed aromatization device with different reaction effects in different regions can be further reduced.

The invention provides a naphtha and methanol mixed aromatization device which comprises a plurality of hollow spheres with deformability, wherein naphtha is contained in the hollow spheres, a catalyst layer is arranged on the inner wall of the outermost hollow sphere, the catalyst layers are arranged on the inner wall and the outer wall of the inner hollow sphere, a plurality of communicating pipes which are uniformly distributed are arranged between the hollow spheres, a container is arranged outside the outermost hollow sphere, a water source is filled between the container and the outermost hollow sphere, a cavity is arranged in the container, a plurality of first partition plates and a plurality of second partition plates are arranged in the cavity, the first partition plates and the second partition plates are fixedly connected and divide the cavity into a plurality of partition chambers, external connecting pipes which are communicated with the partition chambers one by one are arranged on the container, and the external connecting pipes are used for introducing methanol and naphtha, one end of the communicating pipe penetrates through the hollow ball body positioned on the outermost layer and is communicated with the separation cavity in the container, an electric control valve is arranged on the communicating pipe, the other end of the communicating pipe is communicated with the hollow ball body positioned on the innermost layer, an output mechanism penetrating through the container is arranged on the hollow ball body, a plurality of communicating mechanisms are arranged on the communicating pipe and are positioned between the hollow ball bodies, the electric control valve is electrically connected with an external power supply, and the electric control valve is in external signal connection.

Preferably, the output mechanism comprises an output pipe and a sealing rod, one end of the output pipe is communicated with the hollow sphere located at the innermost layer, the other end of the output pipe penetrates through the container, a plurality of through holes are formed in the surface of the output pipe, the sealing rod is located in the output pipe, a channel is arranged inside the sealing rod, a switch valve is arranged at one end of the sealing rod, and the channel is used for being externally connected with cooling liquid.

Preferably, the communication mechanism comprises a plurality of branch pipes, and the branch pipes are provided with one-way valves for inputting methanol.

Preferably, the outer wall of the hollow sphere positioned at the outermost layer is provided with a first heat preservation layer.

Preferably, a second heat-insulating layer is arranged on the communicating pipe between the container and the outmost hollow sphere, and the first heat-insulating layer is connected with the second heat-insulating layer.

Preferably, the external connecting pipe is provided with a check valve.

Preferably, the surface on first heat preservation is equipped with pressure sensor, be equipped with the connecting rod on the inner wall of container, the connecting rod with pressure sensor looks butt, controller and force (forcing) pump on the outer wall of container, be equipped with the connecting pipe on the force (forcing) pump, the connecting pipe is used for communicateing external water source, the connecting pipe passes the container, pressure sensor with controller signal connection, the controller with force (forcing) pump signal connection, pressure sensor, controller with the force (forcing) pump all is connected with external power supply electricity.

Preferably, the other end of the external connecting pipe is provided with a storage box communicated with the external connecting pipe, the storage box is provided with a first input pipe and a second input pipe which are communicated with the storage box, the first input pipe is used for inputting naphtha, and the second input pipe is used for inputting methanol.

A using method of a naphtha and methanol mixed aromatization device comprises the following steps,

s1, introducing high-temperature naphtha into different hollow spheres, and introducing methanol into the hollow spheres through the external connecting pipe for reaction;

and S2, opening the output mechanism after the reaction is finished, and leading out the reacted substances.

The invention has the beneficial effects that:

according to the naphtha and methanol mixed aromatization device, high-temperature naphtha is led into different hollow spheres through the separation chamber, the electric control valve is closed, then the external connecting pipe is used for leading methanol into the separation chamber, after the separation chamber is filled with the methanol, the electric control valve is controlled to be opened through an external signal, so that the methanol enters the hollow spheres through the communicating pipes to react, the amount of the methanol entering the hollow spheres is the same, the reaction effects in different regions are more consistent, the yield is higher, the octane number of a reaction product is improved, the benzene content in an oil product is reduced, because the communicating pipes are arranged on the hollow spheres in an outward-dispersing state, the distribution density of the communicating pipes on the hollow spheres at the innermost layer is high, and the distribution density of the communicating pipes on the hollow spheres at the outermost layer is low, because the hollow sphere positioned at the outermost layer is in direct contact with a water source, the temperature is lowest, when methanol sequentially passes through the external connecting pipe, the cavity in the container, the communicating pipe, the communicating mechanism and the hollow sphere, the heat of the methanol is mostly diffused to naphtha positioned in the hollow sphere positioned at the outermost layer, so that the temperature of the naphtha in the hollow sphere positioned at the outermost layer can be close to that of the naphtha in the hollow sphere positioned at the innermost layer, and because the communicating pipes are uniformly distributed, the temperature of the naphtha in each area in each hollow sphere is close to that of the naphtha in each area, through the reaction among the catalyst layer, the naphtha and the methanol, the temperature drop is small, the reaction rates of different areas can be uniform, the phenomenon that the reaction is too fast due to local high temperature to generate a large amount of gas is avoided, and in addition, because the structure of the hollow sphere can make the pressure of each area uniform, thereby avoided traditional reactor structure easily to lead to the condition of explosion to take place, and passed through water source in the container works as after the hollow spheroid inflation, can for hollow spheroid provides certain external pressure, makes outmost hollow spheroid can receive certain external pressure, significantly reduced inside and outside pressure differential between the hollow spheroid has reduced hollow spheroid's the risk of bursting, after the reaction finishes, through opening output mechanism can derive the complete output of reaction for the easy operation of this device is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of a partial structure of the inside of a vessel of a mixed naphtha and methanol aromatization apparatus according to the invention;

FIG. 2 is a schematic view of a partial structure inside a cavity of a mixed naphtha and methanol aromatization apparatus according to the invention;

fig. 3 is a sectional view of the overall structure in the front view direction of a mixed naphtha and methanol aromatization apparatus according to the invention.

In the figure, 1 is a hollow sphere, 2 is a catalyst layer, 3 is a communicating pipe, 4 is a container, 5 is a cavity, 6 is an external connecting pipe, 7 is an output pipe, 8 is a sealing rod, 9 is a through hole, 10 is a channel, 11 is a switch valve, 12 is a branch pipe, 13 is a check valve, 14 is a first heat preservation layer, 15 is a second heat preservation layer, 16 is a check valve, 17 is a pressure sensor, 18 is a connecting rod, 19 is a controller, 20 is a pressure pump, 21 is a connecting pipe, 22 is a first partition plate, 23 is a second partition plate, 24 is a partition chamber, 25 is an electric control valve, 26 is a storage tank, 27 is a first input pipe, and 28 is a second input pipe.

Detailed Description

In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, the invention provides a naphtha and methanol mixed aromatization device, which comprises a plurality of hollow spheres 1 with deformability, wherein naphtha is contained in the hollow spheres 1, a catalyst layer 2 is arranged on the inner wall of the hollow sphere 1 positioned on the outermost layer, the catalyst layer 2 is arranged on both the inner wall and the outer wall of the hollow sphere 1 positioned on the inner layer, a plurality of communicating pipes 3 which are uniformly distributed are arranged between the hollow spheres 1, a container 4 is arranged outside the hollow sphere 1 positioned on the outermost layer, a water source is filled between the container 4 and the hollow sphere 1 positioned on the outermost layer, a cavity 5 is arranged in the container 4, a plurality of first partition plates 22 and a plurality of second partition plates 23 are arranged in the cavity 5, the first partition plates 22 and the second partition plates 23 are fixedly connected and partition the cavity 5 into a plurality of partition chambers 24, the container 4 is provided with external pipes 6 which are communicated with the separation chambers 24 one by one, the external pipes 6 are used for introducing methanol and naphtha, one end of the communicating pipe 3 penetrates through the hollow sphere 1 positioned on the outermost layer and is communicated with the separation chambers 24 in the container 4, the communicating pipe 3 is provided with an electric control valve 25, the other end of the communicating pipe 3 is communicated with the hollow sphere 1 positioned on the innermost layer, the hollow sphere 1 is provided with an output mechanism which penetrates through the container 4, the communicating pipe 3 is provided with a plurality of communicating mechanisms which are positioned between the hollow spheres 1, the electric control valve 25 is electrically connected with an external power supply, the electric control valve 25 is in signal connection with the outside, high-temperature naphtha is introduced into different hollow spheres 1 through the separation chambers 24, the electric control valve 25 is closed, and then the external pipes 6 are used for introducing methanol into the separation chambers 24, after the separation chamber 24 is filled with methanol, the electronic control valve 25 is controlled to be opened through an external signal, so that the methanol enters the hollow sphere 1 through the communicating pipe 3 to react, the amount of the methanol entering the hollow sphere 1 is the same, the reaction effects in different areas are more consistent, the yield is higher, the octane number of a reaction product is improved, and the content of benzene in an oil product is reduced, because the communicating pipe 3 is arranged on the hollow sphere 1 in an outward-diffused state, the communicating pipe 3 on the hollow sphere 1 at the innermost layer has high distribution density, the communicating pipe 3 on the hollow sphere 1 at the outermost layer has low distribution density, and because the hollow sphere 1 at the outermost layer is in direct contact with a water source, the temperature is lowest, and when the methanol sequentially passes through the external connecting pipe 6, the cavity 5 in the container 4, The communicating pipe 3, the communicating mechanism and the hollow sphere 1, the heat of methanol is most dissipated to naphtha in the hollow sphere 1 positioned at the outermost layer, so that the temperature of naphtha in the hollow sphere 1 at the outermost layer can be close to the temperature of naphtha in the hollow sphere 1 at the innermost layer, moreover, as the communicating pipe 3 is uniformly distributed, the temperature of naphtha in each area in each hollow sphere 1 is close, through the reaction between the catalyst layer 2, naphtha and methanol, the temperature drop is small, the reaction rates of different areas can be uniform, the phenomenon that a large amount of gas is generated due to the over-fast reaction caused by local high temperature is avoided, in addition, as the structure of the hollow sphere 1 can make the pressure of each area uniform, the explosion condition easily caused by the traditional reactor structure is avoided, and through the water source in the container 4, after the hollow sphere 1 expands, can for hollow sphere 1 provides certain external pressure, makes outmost hollow sphere 1 can receive certain external pressure, has significantly reduced inside and outside pressure differential between the hollow sphere 1 has reduced hollow sphere 1's the risk of bursting, after the reaction finishes, through opening output mechanism, can derive the product that the reaction is complete, makes the easy operation of this device convenient.

Specifically, the output mechanism comprises an output tube 7 and a sealing rod 8, one end of the output tube 7 is communicated with the hollow sphere 1 located at the innermost layer, the other end of the output tube 7 penetrates through the container 4, a plurality of through holes 9 are formed in the surface of the output tube 7, the sealing rod 8 is located in the output tube 7, a channel 10 is formed in the sealing rod 8, a switch valve 11 is arranged at one end of the sealing rod 8, the channel 10 is used for externally connecting cooling liquid, the sealing rod 8 can be made of a material with a thermal expansion amplitude larger than that of the output tube 7, when the reaction is carried out, the sealing rod 8 is further heated and expanded through high temperature generated in the reaction process, so that the through holes 9 in the output tube 7 are blocked, and after the reaction is finished, the sealing rod 8 is cooled by opening the switch valve 11, then the reactant in the hollow sphere 1 can be led out through the through hole 9 on the output pipe 7, the operation is simple and convenient, and the using effect is good.

Specifically, the communicating mechanism comprises a plurality of branch pipes 12, one-way valves 13 for inputting methanol are arranged on the branch pipes 12, and the methanol can be quickly guided out to the hollow sphere 1 by the aid of the cooperation between the branch pipes 12 and the one-way valves 13, so that overflow is avoided.

Specifically, the outer wall of the hollow sphere 1 located on the outermost layer is provided with the first heat preservation layer 14, and through the effect of the first heat preservation layer 14, the heat dissipation rate can be effectively reduced, and the phenomenon that the temperature of the material in the hollow sphere 1 is too fast to drop is avoided.

Specifically, be located container 4 and outmost between hollow spheroid 1 communicating pipe 3 is equipped with second heat preservation 15, first heat preservation 14 with second heat preservation 15 is connected, through the effect of second heat preservation 15, can effectively reduce rate of heat dissipation, avoids the process the material temperature of communicating pipe 3 drops at the excessive speed.

Specifically, be equipped with check valve 16 on the external pipe 6, through check valve 16's effect can avoid the material in the hollow spheroid 1 leaks.

Specifically, the surface of first heat preservation 14 is equipped with pressure sensor 17, be equipped with connecting rod 18 on the inner wall of container 4, connecting rod 18 with pressure sensor 17 looks butt, controller 19 and force (forcing) pump 20 on the outer wall of container 4, be equipped with connecting pipe 21 on the force (forcing) pump 20, connecting pipe 21 is used for communicateing external water source, connecting pipe 21 passes container 4, pressure sensor 17 with 19 signal connection of controller, controller 19 with 20 signal connection of force (forcing) pump, pressure sensor 17, controller 19 with force (forcing) pump 20 all is connected with external power supply electricity, through pressure sensor 17 with cooperation between the connecting rod 18, when outmost behind the hollow spheroid 1 inflation, can pass through the pressure sensor 17 with the pressure that the inflation produced to controller 19, then through controller 19 control force (forcing) pump 20 pressurizes, the internal pressure and the external pressure of the hollow sphere 1 at the outermost layer can be relatively close, so that the amplitude of the pressure difference applied to the hollow sphere 1 is relatively small, and the risk of bursting is effectively reduced.

The other end of external pipe 6 is equipped with storage box 26 that is linked together with it, be equipped with first input tube 27 and the second input tube 28 that is linked together with it on the storage box 26, first input tube 27 is used for inputing the naphtha, second input tube 28 is used for inputing methyl alcohol, through the cooperation of storage box 26, first input tube 27 and second input tube 28 for methyl alcohol or naphtha can be introduced into according to different situation to this device, easy operation.

s1, introducing high-temperature naphtha into different hollow spheres 1, and then introducing methanol into the hollow spheres 1 through the external connecting pipe 6 for reaction;

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A naphtha and methanol mixed aromatization device is characterized by comprising a plurality of hollow spheres with deformability, wherein naphtha is contained in the hollow spheres, a catalyst layer is arranged on the inner wall of the outermost hollow sphere, the catalyst layer is arranged on the inner wall and the outer wall of the inner hollow sphere, a plurality of communicating pipes which are uniformly distributed are arranged between the hollow spheres, a container is arranged outside the outermost hollow sphere, a water source is filled between the container and the outermost hollow sphere, a cavity is arranged in the container, a plurality of first partition plates and a plurality of second partition plates are arranged in the cavity, the first partition plates and the second partition plates are fixedly connected and divide the cavity into a plurality of partition chambers, external connecting pipes which are communicated with the partition chambers one by one are arranged on the container, and the external connecting pipes are used for introducing methanol and naphtha, one end of the communicating pipe penetrates through the hollow ball body positioned on the outermost layer and is communicated with the separation cavity in the container, an electric control valve is arranged on the communicating pipe, the other end of the communicating pipe is communicated with the hollow ball body positioned on the innermost layer, an output mechanism penetrating through the container is arranged on the hollow ball body, a plurality of communicating mechanisms are arranged on the communicating pipe and are positioned between the hollow ball bodies, the electric control valve is electrically connected with an external power supply, and the electric control valve is in external signal connection.

2. A naphtha and methanol mixed aromatization device according to claim 1, wherein the output mechanism comprises an output tube and a sealing rod, one end of the output tube is communicated with the hollow sphere positioned at the innermost layer, the other end of the output tube passes through the container, the surface of the output tube is provided with a plurality of through holes, the sealing rod is positioned in the output tube, a channel is arranged inside the sealing rod, one end of the sealing rod is provided with a switch valve, and the channel is externally connected with a cooling liquid.

3. The mixed aromatization device of naphtha and methanol as claimed in claim 1, wherein the communication mechanism comprises a plurality of branch pipes, and the branch pipes are provided with one-way valves for inputting methanol.

4. A naphtha and methanol mixed aromatization device according to claim 4 characterized in that the outer wall of the hollow sphere positioned at the outermost layer is provided with a first heat preservation layer.

5. A naphtha and methanol mixed aromatization device according to claim 4, characterized in that the communicating pipe between the container and the hollow sphere at the outermost layer is provided with a second heat preservation layer, and the first heat preservation layer is connected with the second heat preservation layer.

6. The mixed aromatization device of naphtha and methanol as claimed in claim 1, wherein a check valve is arranged on the external connecting pipe.

7. A naphtha and methanol mixed aromatization device according to claim 4, characterized in that the surface of the first heat-insulating layer is provided with a pressure sensor, the inner wall of the container is provided with a connecting rod, the connecting rod is abutted against the pressure sensor, the outer wall of the container is provided with a controller and a pressure pump, the pressure pump is provided with a connecting pipe, the connecting pipe is used for being communicated with an external water source, the connecting pipe penetrates through the container, the pressure sensor is in signal connection with the controller, the controller is in signal connection with the pressure pump, and the pressure sensor, the controller and the pressure pump are all electrically connected with an external power supply.

8. A naphtha and methanol mixed aromatization device according to claim 1, wherein the other end of the external pipe is provided with a storage tank communicated with the external pipe, the storage tank is provided with a first input pipe and a second input pipe communicated with the storage tank, the first input pipe is used for inputting naphtha, and the second input pipe is used for inputting methanol.

9. The use method of naphtha and methanol mixed aromatization device according to claim 1 is characterized by comprising the following steps,