JP2000140613A - Solid-gas reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid-gas reactor dispensing with the exchanging work of a solid packing material, free from the deterioration of process performance, facilitated in the operation of en equipment and small in the deterioration of working environment even if the solid packing material is powdered. SOLUTION: Relating to this solid-gas reactor provided with a hopper 4 for storing the solid packing material reacting with a treating gas and a reactor 1, in which a solid packing material is packed, for introducing the treating gas and discharging the treated gas after the reaction, a screw 2 for transporting the solid packing material upward and continuously discharging the solid packing material from the reactor 1 is arranged and the hopper 4 and the reactor 1 are communicated with each other so that the solid packing material is supplied from the hopper 4 to the lower part of the reactor by naturally flowing down in accordance with the discharge of the solid packing material from the reactor 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-gas reactor for reacting a gas with a solid.

[0002]

2. Description of the Related Art Heretofore, a fixed-type filling tank has been used as a catalyst tank and an adsorption tank for reacting a gas and a solid in petroleum refining and exhaust gas treatment. For example, Japanese Patent Application Laid-Open No. 7-48576 discloses a raw material mixing tank for melting a waste plastic material, a pyrolysis tank for thermally decomposing the molten plastic, and chlorine hydrogen in a pyrolysis oil vapor generated in the pyrolysis tank. In a dehydrochlorination tank that removes waste water, and subsequently, a catalytic cracking tank that reforms the pyrolysis vapor, the oil purification treatment facility for waste plastic material,
A fixed filling tank filled with inorganic coarse particles such as metal and a CaO layer is described.

As another method, for example, Japanese Patent Laid-Open No.
Japanese Patent Application Publication No. 2002272 discloses that a particulate material is filled and held by a gas permeable structure, and the particulate material is moved from top to bottom to form a moving layer, and is contacted with a gas passing through the gas permeable structure from the lateral direction. In the moving bed type reaction vessel, the gas inlet side and the gas outlet side are supported by louvers, and the louvers on the gas inlet side are used as main louvers. The subroutine of is provided in a row in parallel with the main louver,
Furthermore, there is described a moving bed type reaction vessel in which a partition plate having a vent inside a subroutine is provided in a direction perpendicular to the main louver and the subroutine.

[0004]

However, in the above-mentioned fixed type filling tank, since the solid filling needs to be periodically replaced, work in a poor environment occurs, and the operation of the equipment becomes complicated. In addition, the progress of the reaction and the deterioration of the solid packing deteriorate the process performance over time, so that a means for monitoring the performance is required. In addition, there is a problem that gas drift and local reaction are likely to occur, and an excessive amount of solid filling is required to ensure performance.

[0005] In addition, the moving bed type reaction tank has a problem that the solid filling leaks from the louver, so that it must be periodically cleaned and its working environment is extremely poor.

[0006] In addition, when the solid filling is partially solidified by the reaction between the processing gas and the solid filling, gas drift is caused, the performance is reduced, and the pressure loss is increased, resulting in an energy loss.

[0007] The present invention does not require replacement work of the solid filler, furthermore, does not reduce the process performance, and facilitates the operation of the equipment. A reactor is provided.

[0008]

According to the present invention, there is provided a solid-gas reaction apparatus comprising: a hopper for storing a solid filling reacting with a processing gas; A solid-gas reactor equipped with a reactor for transferring the solid filler upward or diagonally upward, and a screw for continuously discharging the solid filler from the reactor, provided in the reactor. The hopper and the reactor are connected so that the solid filler is supplied from the hopper to the lower part of the reactor under natural flow as the solid filler is discharged from the hopper.

Further, the solid-gas reactor of the present invention comprises a hopper for storing a solid filler reacting with a processing gas, a reactor for filling the solid filler and introducing a processing gas and discharging the processing gas after the reaction. In a solid-gas reactor equipped with a solid-filled reactor, a rake for stirring the solid filler is provided in the reactor, and the solid filler is naturally discharged from the hopper to the upper part of the reactor as the solid filler is discharged from the reactor. The hopper and the reactor are connected so as to be supplied under the flow.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

[0011]

Embodiment 1 FIG. 1 is an overall view showing one embodiment of a solid-gas reaction apparatus according to the present invention. A screw 2 to be transferred upward is arranged in a vertical direction, and is rotated by a motor 3. The reactor 1 and the screw 2 may be arranged obliquely as needed. When the solid filling has tackiness or stickiness, the screw 2 may be provided with a plurality of shafts, or the rotation speed may be adjusted via an inverter or a speed change means.

A hopper 4 for supplying a solid filling to the inside of the reactor 1 is connected to a lower portion of the reactor 1 via a connecting pipe 5.

A discharge pipe 6 for discharging the solid filler is connected to an upper part of the reactor 1, and a valve 7 for storing or discharging the solid filler is provided at a lower part of the discharge pipe 6. . When the processing gas is flammable gas, toxic gas, etc.,
Double valves are provided for safety. A container 8 such as a flexible container that receives the discharged solid filling is disposed below the discharge pipe 6.

A processing gas inlet 9 is provided at a lower portion of the reactor 1 and a processing gas outlet 10 is provided at an upper portion thereof.

FIG. 2 is a schematic view of an oiling facility in which the solid-gas device of the present embodiment is arranged.
And then kneading and melting while heating.
Next, the plastic melted by the extruder 11 is added to the extruder l.
The raw material is supplied to a raw material mixing tank 12 connected to the outlet side of No. 1 and is directly heated by using a pyrolysis oil refluxed from a pyrolysis tank 13 at a subsequent stage. In these melting processes, about 90% of the halogen compounds already contained in the plastic are desorbed from the plastic and are generated in gaseous form, so that these hydrogen chlorides are transferred from the extruder 11 and the raw material mixing tank 12 to the washing tower 14. Then, the solution is neutralized by washing with an aqueous solution of NaOH supplied from a line 15. Next, the mixture of the molten plastic and the pyrolysis oil is supplied to the pyrolysis tank 13, and the mixture is circulated with the heating furnace 16 to raise the temperature. By this operation, pyrolysis oil vapor is generated from the pyrolysis tank 13.
In order to remove hydrogen chloride from this pyrolysis oil vapor, it is introduced into the reactor 1 of the solid-gas reactor of the present invention. Thereafter, the pyrolysis oil vapor exiting the reactor 1 is removed from the catalytic cracking tank 1.
After being condensed by the cooler 18 through 7, the thermally decomposed oil is recovered.

In the solid-gas reactor according to the present invention, which is arranged to remove hydrogen chloride in the above-mentioned equipment, as shown in FIG. Is introduced inside. Inside the reactor 1, CaO is filled as a reactant, and the solid filler is transferred upward inside the reactor 1 by rotation of the screw 2. With the discharge of the solid filler, the hopper 4 feeds the solid filler CaO into the reactor 1.
Through the connecting pipe 5, a solid packing equivalent to the discharge amount is continuously supplied into the reactor under natural flow.

The pyrolysis oil vapor that has been dehydrochlorinated by reacting with CaO is discharged from the processing gas outlet 10, and the solid filler transferred upward inside the reactor 1 is discharged quantitatively and continuously. It is discharged to a pipe 6 and stored in a container 8 arranged below the discharge pipe 6. Embodiment 2 FIG. 3 is an overall view showing another embodiment of the solid-gas reaction apparatus of the present invention.
A rake 17 for stirring the solid filling is arranged in the vertical direction,
It is rotated by the motor 3. Reactor 1 and rake 1
9 may be arranged obliquely if necessary. Rake 19
When the solid filling has tackiness or stickiness, the solid filling may be arranged on a plurality of shafts, or the rotation speed may be adjusted via an inverter or a transmission.

A hopper 4 for supplying the solid filling to the inside of the reactor 1 is connected to the upper part of the reactor 1 via a connecting pipe 5.

In addition, a rotary valve 20 for discharging the solid filling is provided below the reactor 1.
The rotary speed of the rotary valve 20 may be adjusted via an inverter and a speed change unit. Reaction device 1
Is a processing gas inlet 9 at the lower part and a processing gas outlet 10 at the upper part.
Are respectively provided.

In the solid-gas reactor of this embodiment, the solid filler reacts with the processing gas while being stirred from above by the rake 19, is transferred downward by gravity, and is discharged from the lower part as the solid filler is discharged. In the reactor 1, an amount of solid filler equivalent to the amount of CaO, which is a solid filler, is continuously supplied from the hopper 4 to the reactor under natural flow.

[0021]

In the solid-gas reactor according to the present invention, the solid packing is continuously transferred and discharged from the reactor.
There is no need to replace the solid filler, no deterioration in process performance due to breakthrough or deterioration over time, and the facility can be operated easily.

Further, even if the solid filler is powdered, it is discharged in a closed system, so that work in a poor environment such as cleaning of the powder filler in the apparatus is not required.

Since the solid filler is constantly stirred by the screw and the rake, partial solidification of the solid filler due to the reaction between the processing gas and the solid filler does not occur, and gas drift does not occur. In addition, the efficiency of reaction and adsorption is increased, the amount of solid filler used can be suppressed, and if the discharge speed of the solid filler can be changed, the solid filler according to changes in the processing gas amount and gas properties Can be easily adjusted.

In the solid-gas reactor in which the screws are arranged vertically or obliquely, no gap is formed in the solid packing, so that the reaction between the processing gas and the solid packing is promoted, and the movement of the solid packing is directed upward. Thereby, the quantitativeness of the transfer by the screw is improved.

[Brief description of the drawings]

FIG. 1 is an overall view showing one embodiment of a solid-gas reaction device of the present invention.

FIG. 2 is a schematic diagram of an oiling facility in which the solid-gas device of the present embodiment is arranged.

FIG. 3 is an overall view showing another embodiment of the solid-gas reaction device of the present invention.

[Explanation of symbols]

1 reactor, 2 screw, 3 motor,
4 hopper, 5 connecting pipe, 6 discharge pipe, 7 valve,
8 container, 9 processing gas inlet, 10 processing gas outlet, 11 extruder, 12 raw material mixing tank, 13 thermal decomposition tank, 14 washing tower, 15 lines, 16 heating furnace, 17 contact cracking tank, 18 cooler, 19 rake, 20 Rotary valve

(72) Inventor Eiji Matsukuma 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu Nippon Steel Corporation Inside the Engineering Business Unit (72) Inventor Kenshi Matsuda 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu Nippon Steel F-term in Engineering Business Unit Co., Ltd. (Reference) 4D012 CA20 CC07 CC14 CG01 4G070 AA01 AB06 BB14 BB19 CB16

Claims (2)

[Claims] 1. A solid-gas reactor comprising: a hopper for storing a solid filler reacting with a processing gas; and a reactor for filling the solid filler and introducing a processing gas and discharging a processing gas after the reaction. In the reactor, while transferring the solid filler upward or obliquely, a screw for continuously discharging the solid filler from the reactor is provided,
A solid-gas reactor characterized in that the hopper and the reactor are connected so that the solid filler is supplied from the hopper to the lower part of the reactor by gravity as the solid filler is discharged from the reactor. . 2. A solid-gas reactor comprising: a hopper for storing a solid filler reacting with a processing gas; and a reactor for filling the solid filler and introducing a processing gas and discharging a processing gas after the reaction. A rake for stirring the solid filler is provided in the reactor, and the hopper is connected to the hopper so that the solid filler is supplied from the hopper to the upper part of the reactor under gravity by the discharge of the solid filler from the reactor. A solid-gas reactor characterized by being connected to a reactor.