JPH02115295A - Reactor - Google Patents

Abstract

PURPOSE:To make it possible to perform the uniform and exact contact of a material with a reactant fluid and to react them with each other in good efficiency within a short time by using a reactor comprising a specified structure. CONSTITUTION:A reactor provided with a sealed vessel 11 in which a material is placed, a shaft 13 extending from the inside of the vessel 11 to its outside and a rotary blade 12 comprising an impeller 14 for agitating said material, secured to the external periphery of the shaft 13, wherein a passage 29 extending in the axial direction is provided inside the shaft 13, a fluid feed union 28 for feeding a reactant fluid to the passage 29 is provided on said shaft in a position outside the sealed vessel 11, a plurality of openings 30 are provided on the external surface of said impeller 14, and these openings 30 communicate with said passage 29 through a communication passage 31. After the material is placed in the sealed vessel 11, the reactant fluid is fed thereto from the fluid feed union 28 and allowed to emerge from the openings 30 and to react, while the rotary blade 12 is rotated.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a reaction device for stirring and reacting raw materials such as heavy oil, and particularly to a reaction device for stirring while blowing a reaction fluid. Regarding.

(Prior Art) Conventionally, as a reaction apparatus for stirring and reacting raw materials, there has been known a reaction apparatus that includes a closed container in which the raw materials are stored and a rotary blade attached to the closed container.

Further, the closed container is provided with a fluid blowing device, for example, an air blowing device, which blows air into the raw material in the closed container while the raw material is being stirred by a rotary blade.

By blowing air into raw materials such as heavy oil during stirring, it is possible to oxidize the heavy oil, thereby distilling low volatile components, and in addition to thermal polycondensation, dehydrogenation condensation and oxygen Polymerization can be achieved by promoting addition condensation reactions.

A reactor that blows air into heavy oil while stirring is
Manufacture of paving asphalt from heavy oil, adjustment of isotropy of quality pitch including mesoface small spheres, adjustment of properties of pitches (improvement of softening point, viscosity, etc.), mosaic coke suitable for isotropic carbon raw materials It can be used for pre-treatment during manufacturing, and the range of industrial applications is widening.

Note that there is also known a reaction apparatus in which a nitrogen gas blowing device is provided in a closed container and nitrogen gas is blown into the raw material in the closed container. In this case, heavy oil can be visbroken by blowing nitrogen gas into the raw material such as heavy oil.

In addition, in the pitch formation process in which the pyrolysis polycondensation reaction is advanced and concentrated into a polycyclic aromatic compound, it is necessary to simultaneously stir the inside of the closed container in order to suppress heterogeneous reactions. A reaction apparatus having a nitrogen gas blowing device can also be used in such a pitch forming step.

(Problems to be Solved by the Invention) In the reaction apparatus as described above, a fluid blowing device such as an air blowing device is generally provided separately and independently from the rotary blade.

For this reason, even if the raw material is sufficiently stirred by the rotary blade, a problem arises in that gas-liquid cannot come into uniform contact between the reaction fluid (for example, air) and the raw material (for example, heavy oil).

In order to solve this problem, it is possible to inject a large amount of reaction fluid into the closed container, but in this case, the reaction temperature of the raw materials may drop or uneven temperature distribution may occur within the closed container. It ends up.

The present invention has been made in consideration of these points,
It is an object of the present invention to provide a reaction device that can efficiently and uniformly contact raw materials with an appropriate amount of blown reaction fluid.

[Structure of the invention]

(Means for Solving the Problems) The present invention includes a sealed container that stores raw materials therein, and a rotary blade attached to the sealed container, and the rotary blade has a shaft extending from the inside of the sealed container to the outside. and an impeller fixed to the outer periphery of the shaft to agitate the raw material, forming a flow path extending in the axial direction inside the shaft, and directing the flow to a portion of the shaft located outside the airtight container. The reaction device is characterized in that a fluid introduction union for introducing a reaction fluid into the channel is provided, a plurality of openings are provided on the outer surface of the impeller, and the openings and the flow channel are communicated with each other through a communication channel.

(Function) During stirring by the rotary blade, the reaction fluid flows into the flow path from the inflow introduction union, and then the reaction fluid in the flow path is discharged into the raw material through the communication path and the opening of the impeller, and the raw material and the reaction fluid are react with.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 3 are diagrams showing one embodiment of a reaction apparatus according to the present invention.

Of these, FIG. 3 is a schematic diagram of the entire system. As shown in FIG. 3, the reactor 10 contains a raw material, for example, heavy oil 19.
It is equipped with an airtight container 11 containing the airtight container 11, and a rotor blade 12 attached to the airtight container 11. Of these, the rotation g12 is caused by the shaft 13 extending from the inside of the closed container 11 to the outside;
It consists of a main impeller 14 and a sub-impeller 15 which are fixed to the outer periphery of the shaft and stir heavy oil 19. Among these, the main impeller 14 is arranged at the lower end of the shaft 13, and the sub-impeller 15 is arranged above the main impeller 14.

Further, the shaft 13 is driven by a motor 25 and a gear box 26 provided outside the closed container 11, and a fluid introduction union 28 is provided at the upper end of the shaft 13.

Further, a heater 17 for heating heavy oil 19 is arranged on the side of the closed container 11, and a thermocouple 18 housed in a protective tube 18a inside the closed container 11 measures the temperature. It is provided for this purpose.

Further, a distillation pipe 35 is connected to the upper lid 11a of the closed container 11, and a distillation pipe 35 is connected to guide a product produced when the raw materials react to a receiver 36, and a gas discharge pipe 37 is attached to the receiver 36.

The distillation pipe 35 and the receiver 36 are provided with heat insulating or cooling means (not shown) as appropriate.

Next, the reactor 10 will be described in detail with reference to FIGS. 1 and 2.

A channel 29 extending in the axial direction is formed in the shaft 13, and a fluid introduction union 28 for introducing a reaction fluid, for example, air into the channel 29, is provided at the upper end of the shaft 13.

The fluid introduction union 28 is provided with an inflow pipe 28a,
The fluid introduction union 28 is fixed as a whole without rotating.

A bearing 27 is provided above the shaft 13, and the shaft 13 above the bearing 27 is fixed, and the shaft 13 below the bearing 27 is rotatable. Further, the shaft 13 passes through the upper lid 11a of the closed container 11 and extends from the inside to the outside, and the penetrating portion of this shaft is sealed by a gland packing 22. That is, the gland packing 22 is disposed between the outer periphery of the shaft 13 and a packing stand 21 fixed to the upper surface of the upper lid 11a, and the gland packing 22 is held by a packing presser 23.

Further, a bevel gear 25a is fixed to the output shaft of the motor 25, and this bevel gear 25a is attached to the shaft 1 within the gear box 26.
It engages with a bevel gear 26a provided on the outer periphery of No.3. Of these, the bevel gear 26a is slidable in the axial direction with respect to the shaft 13, so even when the shaft 13 is slid in the vertical direction according to the liquid level of the heavy oil 19, the motor 25 is not moved. The driving force can be transmitted to the shaft 13 via the bevel gears 25g and 26a.

Further, the shaft 13 can be raised so that the main impeller 14 is above the liquid level after the reaction is completed.

Further, as shown in FIG. 2, a plurality of openings 30 are provided on the outer surface of the main impeller 14 disposed at the lower end of the shaft 13, and the plurality of openings 30 and the flow path 29 in the shaft 13 are connected to each other. are communicated through a communication path 31.

Next, the operation of this embodiment having such a configuration will be explained.

First, heavy oil 19 is stored in the closed container 11, and the motor 25 is rotated. In this case, the driving force of the motor 25 is transmitted to the shaft 13 via the bevel gear 25a and the bevel gear 26a, and the shaft 13 rotates. Due to such rotation of the shaft 13, the main impeller 14 and the sub-impeller 15 agitate the heavy oil 19.

While the heavy oil 19 is being stirred, air that has flowed into the fluid introduction union 28 from the inflow pipe 28a then flows into the flow path 29 within the shaft 13. Subsequently, the air flowing into the flow path 29 flows downward along the flow path 29, passes through the communication path 31, and is discharged into the heavy oil 19 from the opening 30 of the main impeller 14.

By blowing air into the heavy oil 19 in this way,
Heavy oil 19 can be oxidized. The heavy oil oxidized in this way is subsequently used, for example, in the production of asphalt for paving. Thereafter, the reaction product in the closed container 11 is led to the receiver 36 through the distillation pipe 35, and the gas in the receiver 36 is released to the outside from the gas release pipe 37.

As explained above, according to this embodiment, air can be released into the heavy oil 19 from the opening 30 of the main impeller 14 that stirs the heavy oil 19, so that the air and the heavy oil 19 can be mixed. Contact can be made evenly and reliably. Therefore, there is no need to blow a large amount of air into the heavy oil 19, and the heavy oil 19 and air can be reacted efficiently and in a short time.

In addition, in the above embodiment, the main impeller 14 has an opening 30.
Although an example in which the impeller 15 is provided is shown, the present invention is not limited to this, and the sub impeller 15 may be provided with an opening that communicates with the flow path 29. Further, the reaction fluid introduced into the channel 29 from the fluid introduction union 28 is not limited to air, but may be nitrogen gas or the like, and is not limited to gas, but may also be a liquid that reacts with the raw material.

〔Effect of the invention〕

As explained above, according to the present invention, the reaction fluid can be discharged into the raw material from the opening of the impeller that stirs the raw material, so that the reaction fluid and the raw material can be uniformly and reliably contacted. Therefore, there is no need to blow a large amount of the reaction fluid into the raw material, and the reaction fluid and the raw material can be reacted efficiently and in a short time.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view showing one embodiment of the reactor according to the present invention, FIG. 2 is a detailed view showing the main impeller portion of the reactor according to the present invention, and FIG. It is a schematic system diagram showing a container. 10... Reactor, 11... Sealed container, 12...
Rotating blade, 13... shaft, 14... main impeller,
15... Sub-impeller, 1... Raw material, 28... Fluid introduction union, 29... Channel, 30... Opening, 3
1...Communication path. Applicant's agent Mr. Sato

Claims (1)

[Claims] It includes a sealed container that stores raw materials therein, and a rotary blade attached to the sealed container, and the rotary blade has a shaft extending from the inside of the sealed container to the outside, and is fixed to the outer periphery of the shaft to agitate the raw material. an impeller that forms a flow path extending in the axial direction inside the shaft, and a fluid introduction union that introduces the reaction fluid into the flow path at a location of the shaft located outside the closed container. . A reaction device, characterized in that a plurality of openings are provided on the outer surface of the impeller, and the openings and the flow path are communicated with each other through a communication path.