KR20090013503A - A fluidized bed reactor for catalytic decomposition of hydrocarbon, an apparatus for continuous catalytic decomposition process of hydrocarbon including the same and continuous catalytic decomposition process of hydrocarbon using the same - Google Patents

Abstract

A fluidized bed reactor for a catalytic decomposition process of hydrocarbons and a reaction apparatus comprising the same are provided to solve a reactor fouling phenomenon generated when a carbon catalyst is deposited on an inner part of a reactor by continuously discharging manufactured carbon to the outside of the reactor using the fluidized bed reactor and continuously supplying a new carbon black catalyst into the reactor. As a fluidized bed reactor producing hydrogen and carbon only without generation of carbon dioxide through catalytic decomposition of hydrocarbons, a fluidized bed reactor(10) for continuously producing hydrogen without exhaust of carbon dioxide due to catalytic carbon decomposition of the hydrocarbons comprises discharge pipe(11) installed on a wall surface of the reactor to discharge carbon, and a fine nozzle formed on a side face of the discharge pipe to flow gas. The discharge pipe includes a valve(14) for controlling discharge of a carbon-deposited carbon black catalyst.

Description

Fluidized bed reactor for catalytic cracking of hydrocarbons, apparatus for continuous catalytic cracking process of hydrocarbons comprising the same, and continuous catalytic cracking process for hydrocarbons using the same INCLUDING THE SAME AND CONTINUOUS CATALYTIC DECOMPOSITION PROCESS OF HYDROCARBON USING THE SAME}

The present invention relates to a fluidized bed reactor for catalytic cracking of hydrocarbons, a device for continuous catalytic cracking of hydrocarbons comprising the same, and a continuous catalytic cracking of hydrocarbons using the same.

Hydrogen is widely used as a raw material for chemical products and a process gas for chemical plants. Recently, the demand for hydrogen is increasing as a raw material for fuel cells, which is a future energy technology. In addition, it is evaluated as the most powerful and the only alternative that can solve the environmental problems facing humankind and the price rise or exhaustion of fossil fuels.In particular, in the 21st century, the global warming, air pollution and energy security and At the level of self-sufficiency, research on the production, storage and use of hydrogen is being actively conducted worldwide.

Although hydrogen is ultimately produced from renewable energy sources without generating carbon dioxide, it is estimated that hydrogen is most economically produced from coal and natural gas, and that carbon dioxide is removed to contribute to the purification of fossil fuels. It is preferable at the point.

As a method of producing a large amount of hydrogen from hydrocarbons, steam reforming of natural gas and partial oxidation of hydrocarbons are known. However, existing methods generate environmental problems such as global warming because large amounts of carbon dioxide are simultaneously produced. There is a problem.

Another method is plasma decomposition, which has been extensively studied and is being commercialized in some countries, including Norway. However, the plasma decomposition method is not economical because it consumes a lot of power, and the emission of carbon dioxide to the power generation is inevitable, which may pose environmental problems.

As another method, a process of producing carbon black and hydrogen by pyrolysing natural gas, heavy oil, coal tar, and the like at high temperature. However, this method requires a very high reaction temperature of 1400 ° C. or higher, and is a cumbersome semi-continuous process that uses two reactors periodically due to the deposition of carbon produced. In addition, since the main product is carbon black, it is difficult to say that it is a suitable method for hydrogen production.

As another method, a catalytic decomposition method using a metal catalyst may be used as a method for lowering the high reaction temperature required for the direct decomposition of hydrocarbons. However, there is a problem in that the carbon produced in the catalytic decomposition reaction lowers the activity of the catalyst, and thus a process of regenerating the metal catalyst using air or steam at a high temperature is required to regenerate the metal catalyst having reduced activity. In this regeneration process, carbon dioxide, a greenhouse gas, is generated.

Therefore, there is a need for a catalyst whose activity is not lowered by carbon as a reaction product, and activated carbon, carbon black, graphite, and the like have been studied by Muradov et al.

When a catalyst such as activated carbon, carbon black, graphite, or the like is used, the activity of the catalyst is not lowered by carbon as the reaction product, but solid carbon is deposited on the catalyst. When the reaction proceeds for a long time in a fixed bed reactor, the entire reactor is accumulated as a catalyst, and thus clogging of the reactor is impossible. Therefore, there is a problem in that the reaction must be stopped, and the reaction must be started again after removing the catalyst in which carbon deposited on the reactor walls is deposited.

In order to solve this problem, a method of catalyzing hydrocarbons using a fluidized bed reactor has been proposed.

As described above, a method of using a fluidized bed reactor has been proposed in order to solve the problem of carbon deposited catalyst deposited in the reactor during the catalytic decomposition of hydrocarbons. In the case of using a fluidized bed reactor, since the catalyst on which carbon is deposited is discharged to the outside of the reactor while maintaining a fluidized state, it can be prevented to some extent from being accumulated on the inner wall of the reactor.

In order to solve the problems of the prior art as described above, the present inventors have intensively studied, and when the hydrocarbon is catalyzed by using a fluidized bed reactor having a discharge pipe on the wall of the reactor, the produced carbon continuously out of the reactor By discharging and continuously supplying a new carbon black catalyst into the reactor, it was confirmed that the clogging phenomenon of the conventional carbon catalyst deposited in the reactor can be solved, and thus the present invention has been completed.

The present invention provides a fluidized bed reactor for catalysis of hydrocarbons, wherein a discharge pipe is provided on the wall of the reactor.

The discharge pipe is preferably provided on the wall at a position from the bottom of the reactor to H / 5 to H / 2 (where H is the length of the fluidized bed reactor).

The discharge pipe may be provided such that an angle between the lower wall of the reactor and the discharge pipe is about 45 °.

The discharge pipe may be provided with a fine nozzle for flowing gas to the side of the pipe for the smooth flow of solid particles.

The fine nozzle is preferably 1 mm or less in diameter.

In addition, the present invention is a device for the continuous catalytic decomposition process of a hydrocarbon to decompose the hydrocarbon to produce hydrogen and carbon, hopper and screw feeder for supplying a carbon black catalyst; A feeder for supplying hydrocarbons and air; Preheater; A fluidized bed reactor having a discharge pipe for recovering a carbon black catalyst on which carbon produced on the wall of the reactor is deposited; A cyclone for recovering a gas mixture comprising hydrogen produced; Provided is an apparatus for the continuous catalytic cracking process of hydrocarbons comprising a pressure conversion adsorption tower for separating hydrogen from the recovered gas mixture.

In addition, the present invention is a continuous catalytic decomposition process of a hydrocarbon to decompose the hydrocarbon to produce hydrogen and carbon, comprising: a hopper and a screw feeder for supplying a carbon black catalyst; A feeder for supplying hydrocarbons and air; Preheater; A fluidized bed reactor having a discharge pipe for recovering carbon black catalyst having carbon deposited on the wall of the reactor; A cyclone for recovering a gas mixture comprising hydrogen produced; And a pressure conversion adsorption tower for separating hydrogen from the recovered gas mixture, wherein (I) the carbon black catalyst stored in the hopper is supplied through a nozzle above the fluidized bed reactor using a screw feeder, and the preheated hydrocarbon Supplying the lower portion of the fluidized bed reactor to catalyze the reaction; (II) a second step of discharging the carbon black catalyst deposited on the carbon produced from the catalytic decomposition reaction to the discharge pipe provided on the wall of the fluidized bed reactor; (III) recovering a gas mixture comprising hydrogen, unreacted hydrocarbons, and entrained carbon prepared from the catalytic decomposition reaction into a cyclone provided at the top of the fluidized bed reactor; And (IV) separating the entrained carbon from the recovered gas mixture and transferring the mixture of hydrogen and unreacted hydrocarbons to a pressure conversion adsorption tower. And (V) a fifth step of separating the mixture of the transferred hydrogen and unreacted hydrocarbons.

According to the present invention, it is possible to simultaneously produce hydrogen and carbon from hydrocarbons without generating carbon dioxide, as well as continuously discharge carbon produced by using a fluidized bed reactor to the outside of the reactor and continuously supply new carbon black catalyst into the reactor. As a result, the clogging phenomenon of the reactor in which the carbon catalyst is deposited in the reactor, which is a problem of the technique of using the conventional carbon catalyst, is solved. In addition, it can be adjusted to maintain a constant amount of catalyst in the reactor, it is possible to produce a continuous hydrogen, it is also applicable to large-scale production process.

The present invention relates to a fluidized bed reactor for catalytic cracking of hydrocarbons, a device for continuous catalytic cracking of hydrocarbons comprising the same, and a continuous catalytic cracking of hydrocarbons using the same.

Hereinafter, the present invention will be described in detail.

Fluidized bed reactor for catalytic decomposition process of hydrocarbon of the present invention is characterized in that the discharge pipe is provided on the reactor wall.

1 shows a fluidized bed reactor according to the present invention.

As shown in FIG. 1, the fluidized bed reactor 10 is provided with a discharge pipe 11 on the wall of the reactor.

When the discharge pipe 11 is applied to a catalytic decomposition process of a hydrocarbon that decomposes a hydrocarbon to produce hydrogen and carbon, the exhaust carbon 11 continuously discharges the carbon black catalyst on which the manufactured carbon is deposited to the outside, thereby allowing the conventional carbon black catalyst to react with the inner wall of the reactor. It is provided on the wall surface of the fluidized bed reactor to prevent clogging of the reactor accumulated in the.

The discharge pipe 11 is a reactor in a position such that H / 5 to H / 2 (where H means the length of the fluidized bed reactor) from the bottom of the fluidized bed reactor to facilitate the discharge of carbon deposited carbon black catalyst. It is preferable to be provided in the wall surface.

In addition, the discharge pipe is preferably provided such that the angle of the lower wall of the reactor and the discharge pipe is 45 °. Within this angle range, the carbon black catalyst on which carbon is deposited is more easily discharged.

The discharge pipe 11 is preferably 1 to 1.5 inches in diameter.

The discharge pipe 11 may be provided with a fine nozzle 13 on the side of the discharge pipe in order to facilitate the discharge of the carbon black catalyst on which carbon is deposited. Since the carbon black catalyst on which carbon is deposited is a very cohesive solid particle, it may be easier to discharge the gas by flowing the gas through the micronozzle so that they flow better in the discharge pipe.

The fine nozzle 13 preferably has a diameter of 1 mm or less, more preferably 0.5 to 1 mm.

The discharge pipe 11 may include a valve 14 for controlling the discharge of the carbon black catalyst on which carbon is deposited.

The fluidized bed reactor 10 is a double tube type reactor, and may use an internal heating method or an external heating method. In the case of the internal heating method, a heated gas for supplying reaction heat to an inner tube flows, and a carbon black catalyst for reaction is filled in the outer tube to act as a fluidized bed reactor. In addition, in the case of the external heating method, the carbon black catalyst is filled in the inner tube to act as a fluidized bed reactor, and a high temperature gas flows through the outer tube to supply the reaction heat.

2 shows an apparatus for carrying out a continuous catalytic cracking process of a hydrocarbon according to the present invention.

Apparatus for the continuous catalytic cracking process of the hydrocarbon of the present invention comprises a fluidized bed reactor (10) having a discharge pipe on the wall for recovering the carbon black catalyst deposited on the carbon produced by the hydrocarbon decomposition reaction; A hopper 20 and a screw feeder 21 connected to the fluidized bed reactor 10 and a nozzle to supply a carbon black catalyst to the upper portion of the reactor; Feeders 30 and 31 connected to the fluidized bed reactor 10 and nozzles to supply hydrocarbons and air to the bottom of the reactor; A preheater 80 connected to the feeders 30 and 31 for heating hydrocarbons and air; A cyclone (50) for recovering a gas mixture comprising hydrogen produced in connection with the fluidized bed reactor (10); A pressure conversion adsorption tower 60 is connected to the cyclone 50 to separate hydrogen from the recovered gas mixture.

The apparatus for continuous catalytic cracking of hydrocarbons may further include a gas supplier 90 for supplying gas to the discharge pipe through the micronozzle in order to smooth the flow of solid particles in the discharge pipe. 90 may be connected to the fine nozzle of the discharge pipe.

The apparatus for the continuous catalytic cracking process of hydrocarbons uses a portion of pure hydrogen separated in a pressure conversion adsorption tower and the unreacted hydrocarbons left after the hydrogen is separated as a fuel gas for supplying the heat of reaction required for the catalytic cracking reaction. It may further include a compressor (80) for compressing.

The continuous catalytic cracking process of the hydrocarbon of the present invention is carried out in the apparatus for the continuous catalytic cracking process of the hydrocarbon, and (I) the carbon black catalyst stored in the hopper is supplied through a nozzle above the fluidized bed reactor using a screw feeder. A first step of catalytically reacting the preheated hydrocarbon to the bottom of the fluidized bed reactor; (II) a second step of discharging the carbon black catalyst deposited on the carbon produced from the catalytic decomposition reaction to the discharge pipe provided on the wall of the fluidized bed reactor; (III) recovering a gas mixture comprising hydrogen, unreacted hydrocarbons, and entrained carbon prepared from the catalytic cracking reaction into a cyclone equipped at the top of the fluidized bed reactor; (IV) separating the entrained carbon from the recovered gas mixture and transferring the mixture of hydrogen and unreacted hydrocarbon to a pressure conversion adsorption tower; And (V) separating a mixture of transferred hydrogen and unreacted hydrocarbon.

Hereinafter, the catalytic decomposition process will be described in detail with reference to FIG. 2.

In the first step of the continuous catalytic cracking process of the hydrocarbon of the present invention, the carbon black catalyst stored in the carbon black storage hopper 20 is connected to the fluidized bed reactor 10 using a screw feeder 21 provided in the nozzle. It is a step of supplying through the nozzle of the upper, the hydrocarbon supplied from the hydrocarbon supplier 30 is heated to the preheater 80 and supplied to the lower portion of the fluidized bed reactor 10 through the nozzle for catalytic decomposition reaction. In this case, the air supplied from the air supplier 31 may be supplied together with the hydrocarbons, and these may be supplied into the reactor through the distribution pins provided at the bottom of the fluidized bed reactor 10.

Hydrocarbons decompose into gaseous hydrogen and solid carbon through an endothermic reaction that absorbs heat from heated air in the presence of a carbon black catalyst. Carbon produced through the catalytic decomposition reaction is deposited on a carbon black catalyst to form solid particles having a strong cohesive force.

The carbon black catalyst may be one or more selected from the group consisting of carbon black for rubber, carbon black for pigment, and carbon black for electronic materials.

As the hydrocarbon, methane, propane, butane, or the like may be used alone or in combination, and at least one selected from the group consisting of liquefied petroleum gas (LPG; Liquified Petroleum Gas) and liquefied natural gas (LNG). Can be used.

The catalytic decomposition may be carried out at 700 to 950 ℃.

The second step is a step of discharging the carbon black catalyst on which carbon prepared from the catalytic decomposition reaction is deposited to the separation tank 40 through the nozzle using the discharge pipe 11 provided on the wall of the fluidized bed reactor 10.

Carbon prepared by the catalytic decomposition in the first step is deposited on a carbon black catalyst to form a solid particle having a strong cohesion. In the case of using a conventional fixed bed reactor, the clogging phenomenon occurs in which the solid particles are accumulated in the reactor, and the reaction has to be stopped and the reaction has to be started again after removing the solid particles accumulated in the reactor. On the other hand, in the case of using a fluidized bed reactor, the above problems can be improved to some extent, but the cohesive force of the solid particles is not easily discharged to the outside of the reactor. In consideration of this point, in the present invention, the fluidized bed reactor 10 having the discharge pipe on the wall is used.

The discharge pipe is provided on the reactor wall at a position where H / 5 to H / 2 (where H means the length of the fluidized bed reactor) from the bottom of the fluidized bed reactor to facilitate the discharge of carbon deposited carbon black catalyst. It is desirable to be.

The discharge pipe is preferably 1 to 1.5 inches in diameter.

The discharge pipe 11 may be provided with a fine nozzle 13 on the side of the discharge pipe in order to more easily discharge the carbon black catalyst on which carbon is deposited. Since the carbon black catalyst on which carbon is deposited is a very cohesive solid particle, gas may flow from the gas supply unit 90 through the micronozzle so that they may flow better in the discharge pipe, thereby facilitating the discharge.

The fine nozzle is preferably 1 mm or less in diameter, more preferably 0.5 to 1 mm.

The discharge pipe 11 may include a valve 14 for controlling the discharge of the carbon black catalyst on which carbon is deposited.

The third step is a step of recovering the gas mixture including hydrogen, unreacted hydrocarbon, and entrained carbon prepared from the catalytic decomposition reaction to the cyclone 50 through a nozzle provided at the top of the fluidized bed reactor 10.

In the fourth step, the gas mixture recovered by the cyclone 10 is separated, and the entrained carbon is transferred to the separation tank 40 through the nozzle, and the mixture of hydrogen and the unreacted hydrocarbon is transferred through the nozzle to the pressure conversion adsorption column 60. ) To transfer.

The fifth step is a step of separating the mixture of hydrogen and unreacted hydrocarbons transferred to the pressure conversion adsorption tower 60 into pure hydrogen and hydrocarbons.

The unreacted hydrocarbon separated in the fifth step may be used as a source gas by being compressed by the compressor 70 and may also be used as a combustion gas for supplying reaction heat required for the catalytic decomposition reaction.

In addition, the pure hydrogen separated in the fifth step may be used as a fuel cell, and some may be used as a combustion gas for supplying heat of reaction after being compressed by the compressor 70. In this case, it can be said to be a "CO ₂ -free process" with little emission of carbon dioxide, which is more preferable.

According to the continuous catalytic cracking process of the hydrocarbon of the present invention comprising the first step to the fifth step as described above, by using a fluidized bed reactor having a discharge pipe on the wall of the reactor to solve the clogging phenomenon of the reactor, the carbon produced continuously This allows for a continuous process of discharging out of the reactor and continuously feeding fresh carbon black catalyst into the reactor.

Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention. It is natural that such variations and modifications fall within the scope of the appended claims.

Example 1 Discharge Characteristics of Carbon Black According to the Location of the Discharge Tube (Diameter: 0.5 inch)

The discharge characteristics of the carbon black solid particles were investigated according to the position of the discharge pipe provided on the wall of the fluidized bed reactor.

The fluidized bed reactors are respectively located on the wall at the position of H / 5 (Example 1-1), H / 2 (Example 1-2) and H / 5 (Example 1-3) from the top of the reactor. A micro nozzle having a diameter of 1 mm was provided, and a reactor of an internal heating type double tube equipped with a discharge pipe having a diameter of 0.5 inch was used. Rubber carbon black (N330) was used as the carbon black catalyst. Carbon black catalyst stored in the hopper was continuously supplied at a speed of 10 g / s through a nozzle on the top of the fluidized bed reactor using a screw feeder, and maintained at room temperature for a predetermined time and then continuously discharged to the discharge pipe. At this time, in order to facilitate the discharge of the carbon black catalyst, methane gas was flowed through the fine nozzle at a speed of 1 m / s. The mass flux of the carbon black catalyst passing through the unit area per unit time in the discharge pipe was measured according to the operating flow rate of the fluidized bed.

Example 2 Discharge Characteristics of Carbon Black According to the Location of the Discharge Tube (Diameter: 1.0 inch)

In Example 1, the fluidized bed reactor was H / 5 (Example 2-1), H / 2 (Example 2-2) and H / 5 (Example 2-3) from the top of the reactor, respectively, from the bottom of the reactor. The same method as in Example 1 was carried out except that a reactor in the form of a double tube of an internal heating type having a discharge pipe having a diameter of 1.0 inch on the wall surface was used.

In Examples 1 to 2, the mass flux according to the speed of the air flowing in the fine nozzle of the discharge pipe is shown in Figs.

As shown in Fig. 1, in a fluidized bed reactor having a discharge pipe having a diameter of 0.5 inch on the side, the mass flux is excellent when the discharge pipe is provided on the wall at the position of H / 5, H / 2 from the bottom of the reactor, H / 5 was the best. In addition, as shown in Fig. 2, in the fluidized bed reactor having a discharge pipe having a diameter of 1 inch on the side, the mass flux was the best when the discharge pipe was provided on the wall at the position H / 5 from the bottom of the reactor. Therefore, when the discharge pipe is provided at the bottom of the wall of the fluidized bed reactor, that is, the wall at the position H / 5 from the bottom of the reactor, it is most effective for the discharge of carbon black catalyst solid particles having carbon deposited therefrom due to the catalytic decomposition of hydrocarbons. I could confirm that.

Example 3 Catalysis of Methane

As a fluidized bed reactor, a micronozzle having a diameter of 1 mm was provided on the wall surface at the position H / 5 from the bottom of the reactor, and a reactor of an internal heating type double tube type having a discharge pipe having a diameter of 0.5 inch was used. Rubber carbon black (N330) was used as the carbon black catalyst, and methane was used as the hydrocarbon. The carbon black catalyst stored in the hopper is continuously supplied at a speed of 10 g / s through a nozzle on the top of the fluidized bed reactor using a screw feeder, and the methane preheated to 900 ° C. is supplied through a dispersion pin provided at the bottom of the fluidized bed reactor. Catalyzed by feeding continuously into the 1 U _mf rate. The carbon deposited catalyst prepared from the catalysis was continuously discharged to the discharge pipe, and the gas mixture containing the prepared hydrogen was recovered to the cyclone through the upper nozzle of the fluidized bed reactor. At this time, methane gas was flowed at a rate of 1 m / s with a fine nozzle to facilitate the discharge of the catalyst on which carbon was deposited. Catalytic reaction products were analyzed by gas chromatography (GC).

As a result, the conversion rate of methane was 40% or more, and the carbon-deposited catalyst prepared from the catalytic reaction was easily discharged through the discharge pipe without being deposited in the reactor, thereby enabling continuous catalytic decomposition reaction.

Example 4 Catalysis of Propane

Example 3 was carried out in the same manner as in Example 3, except that the reaction was carried out at 750 ℃ using propane as a hydrocarbon.

The conversion of propane was more than 99%, and no carbon black catalyst was deposited in the reactor, allowing for continuous catalysis.

1 is a view showing a fluidized bed reactor for catalytic decomposition of hydrocarbons according to the present invention.

2 is a view showing the apparatus for the continuous catalytic decomposition process of hydrocarbons according to the present invention.

3 is a graph showing the mass flux of the carbon black catalyst on which carbon is deposited according to Example 1 of the present invention.

4 is a graph showing the mass flux of the carbon black catalyst on which carbon is deposited according to Example 2 of the present invention.

Description of the main symbols in the drawings

10 fluidized bed reactor 11 discharge pipe

13: fine nozzle 14: valve

20 carbon black catalyst storage hopper 21 screw feeder

30: hydrocarbon feeder 31: air feeder

40: carbon or carbon black catalyst separation tank 50: cyclone

60: pressure conversion adsorption tower 70: compressor

80: preheater 90: gas supply

Claims (18)

A fluidized bed reactor for catalysis of hydrocarbons, A fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that an outlet pipe is provided on the reactor wall. The method of claim 1, The discharge pipe is a fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that provided on the wall from the bottom of the reactor position H / 5 to H / 2 (where H is the length of the fluidized bed reactor). The method of claim 1, The discharge pipe is a fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that the angle between the lower wall and the discharge pipe of the reactor is 45 °. The method of claim 1, The discharge pipe is a fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that 1 to 1.5 inches in diameter. The method of claim 1, The discharge pipe is a fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that it comprises a fine nozzle for flowing gas to the side of the discharge pipe. The method of claim 5, The fine nozzle is a fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that less than 1 mm in diameter. The method of claim 1, Fluidized bed reactor for catalytic decomposition of hydrocarbons, characterized in that the double tube form. Apparatus for the continuous catalytic decomposition process of hydrocarbons to decompose hydrocarbons to produce hydrogen and carbon, A fluidized bed reactor having a discharge pipe on the wall for recovering the carbon black catalyst on which carbon prepared by the hydrocarbon decomposition reaction is deposited; A hopper and a screw feeder connected to a fluidized bed reactor and a nozzle to supply a carbon black catalyst to the top of the reactor; A feeder connected to the fluidized bed reactor and the nozzle for supplying hydrocarbons and air to the bottom of the reactor; A preheater connected to the feeder for heating hydrocarbons and air; A cyclone for recovering a gas mixture comprising hydrogen produced in connection with a fluidized bed reactor; And a pressure conversion adsorption tower for separating hydrogen from the recovered gas mixture in conjunction with the cyclone. The method of claim 8, Wherein said discharge pipe is provided on the wall at a position from the bottom of the reactor to H / 5 to H / 2 (where H is the length of the fluidized bed reactor). The method of claim 8, The discharge pipe is a device for continuous catalytic decomposition of hydrocarbons, characterized in that it comprises a fine nozzle for flowing gas to the side of the pipe. The method of claim 8 or 10, Apparatus for the continuous catalytic decomposition process of a hydrocarbon, characterized in that the fine nozzle is 1 mm or less in diameter. As a continuous catalytic decomposition process of hydrocarbons to decompose hydrocarbons to produce hydrogen and carbon, Hoppers and screw feeders for feeding carbon black catalysts; A feeder for supplying hydrocarbons and air; Preheater; A fluidized bed reactor having a discharge pipe for recovering a carbon black catalyst on which carbon produced on the wall of the reactor is deposited; A cyclone for recovering a gas mixture comprising hydrogen produced; And a pressure conversion adsorption tower for separating hydrogen from the recovered gas mixture, (I) a first step of supplying a carbon black catalyst stored in the hopper through a nozzle on the top of the fluidized bed reactor using a screw feeder, and catalytic reaction by supplying the preheated hydrocarbon to the bottom of the fluidized bed reactor; (II) a second step of discharging the carbon black catalyst deposited on the carbon produced from the catalytic decomposition reaction to the discharge pipe provided on the wall of the fluidized bed reactor; (III) recovering a gas mixture comprising hydrogen, unreacted hydrocarbons and entrained carbon prepared from the catalytic cracking reaction into a cyclone provided at the top of the fluidized bed reactor; And (IV) separating the entrained carbon from the recovered gas mixture and transferring the mixture of hydrogen and unreacted hydrocarbon to a pressure conversion adsorption tower; And (V) a continuous catalytic cracking process of a hydrocarbon, characterized in that it comprises a fifth step of separating a mixture of transferred hydrogen and unreacted hydrocarbon. The method of claim 12, The carbon black catalyst is a continuous catalytic decomposition process of a hydrocarbon, characterized in that at least one selected from the group consisting of carbon black for rubber, carbon black for pigment and carbon black for electronic materials. The method of claim 12, The hydrocarbon is a continuous catalytic cracking process of a hydrocarbon, characterized in that at least one selected from the group consisting of natural gas, propane, butane, methane, liquefied petroleum gas and liquefied natural gas. The method of claim 12, The catalytic catalytic reaction of the first step is a continuous catalytic cracking process of a hydrocarbon, characterized in that carried out at 700 to 950 ℃. The method of claim 12, The discharge pipe of the fluidized bed reactor is a continuous catalytic cracking process of a hydrocarbon, characterized in that provided on the wall from the bottom of the reactor to be H / 5 to H / 2 (where H is the length of the fluidized bed reactor). The method according to claim 12 or 16, The discharge pipe is a continuous catalytic decomposition process of a hydrocarbon, characterized in that provided with a fine nozzle for flowing gas to the side of the pipe. The method of claim 17, The fine nozzle is a continuous catalytic cracking process of a hydrocarbon, characterized in that less than 1 mm in diameter.

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