DE2058553A1 - Method and device for the decomposition of hydrocarbons - Google Patents

Description

Dr. F. Zumstt? In sen. - Dr. E. Assrn & .nn Dr. R. Koenlgsberger - blpl.-Phys. R. Holzbauer - Dr. F. Zumsteln Jun.

PATENT LAWYERS

TELEPHONE: COLLECTIVE NO. 22534t

TELEX 629979

TELEGRAMS: ZUMPAT CHECK ACCOUNT: MUNICH 91139

BANK ACCOUNT: BANK H. HOUSES

8 MUNICH 2,

BRAUHAUSSTRASSE 4 / IH

5 / Ii ΪΟ54-69

MISSÜI SHIPBUILDING AlID ElTGIEBERItfG- CO. (Pokvo / Japan

Method and device for the decomposition of coals

hydrogen.

The invention relates to a method and an apparatus for the decomposition or digestion of hydrocarbons, in particular a method in which molten metal or molten salt is used as a heating means and hydrocarbons such as propane, naphtha, crude oil, etc. are continuously introduced into the heating means and the Hydrocarbons for the production of olefins low Molecular weight such as acetylene, ethylene, propylene, etc. are decomposed.

Such a method and apparatus for disassembling and known. It is not in accordance with these procedures necessary »to produce a heating surface from high quality material with good corrosion resistance, because the hydrocarbon directly without any difficulty-

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such as corrosion, is heated. The device can be compact, as a large amount of heat, based on the volume unit, is transferred.

However, there are numerous problems related to heat exchange, which is carried out by the movement and circulation of the heating medium such as the molten metal, and in relation to the separation of the molten metal from the decomposed product.

The present invention is directed to solving these problems. According to the method according to the invention, a Gas lift effect, which is generated by blowing a hydrocarbon gas as starting material into the decomposition chamber, and a gas lift effect produced by blowing a combustion gas into the heating chamber of a heating means, used, 'so that the heating medium circulated continuously and decomposes the hydrocarbon or causes a chemical reaction of the hydrocarbon.

The device according to the invention is characterized in that the heating chamber and the decomposition chamber are separated by a partition made of heat-resistant material, so that the Combustion gas and decomposition gas do not mix, and that these chambers are each divided into a gas blowing compartment and an overflow compartment are subdivided, with the overflow section of the heating chamber and the raw gas blowing section of the decomposition chamber are connected to each other by a connecting passage provided at the bottom of the latter compartment, as well as that the Overflow section of the decomposition chamber and the fuel gas blowing section the heating chamber are connected by an equal passage.

The depth of the heating medium that is in the bath and is circulated there, can be arbitrary, and the temperature can be according to the type of raw hydrocarbon to be decomposed

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Material can be selected. The hydrocarbon material will preferably gaseous into the molten metal of the decomposition chamber blown in and heated there. The raw gas violently comes into contact with the hot, molten metal and is quickly heated up * and thus decomposed. The outflow velocity of the blown gas or the decomposed gas from the decomposition chamber must be dimensioned in such a way that the heating medium is not entrained with the gas, but the decomposed gas does not remain in the decomposition chamber so long that a chemical reaction takes place.

In the decomposition chamber, the heating means includes one Foam from decomposed gas, so that the specific gravity of the heating agent decreases and the liquid level rises. Egg is known as a gas lift effect. The warming agent is separated from the decomposed gas on the liquid surface and flows over the partition wall. The overflowing heating medium falls down into the overflow compartment and enters the lower part of the through the connecting passage at the bottom Heating chamber on. The heat extracted in the decomposition chamber is fed back into the heating chamber by hot combustion gases. In this case, it is desirable that the combustion gas contain a small proportion of air in order to be the heating means is not oxidized. The gas lift effect that is created in the heating chamber by blowing in the combustion gas is, allows the heating agent to pass from the heating compartment to the overflow compartment in the same manner as it is related has been described with the decomposition chamber. That Heating agent then flows back into the decomposition chamber through the passage at the bottom.

The following are, for example, preferred embodiments the invention explained in more detail with reference to the accompanying drawing.

Fig. 1 is a vertical section of an embodiment of an apparatus for decomposing hydrocarbons according to the invention; 10 9 8 3 9/1729

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Pig. Figure 2 shows a plan view corresponding to Pig. 1 with the top removed;

3 is a plan view of another embodiment,

at the decomposition chambers on both sides of the heating chamber are provided;

4 is a section, on the right side along the line AA, on the left side along the line BB of the Pig. 3;

Pig. Fig. 5 is a plan view illustrating another embodiment of the device which is circular in shape;

Pig. Figure 6 is a partially sectioned view of the right side of this device, on the left along the line DD, on the right along the line EE of the Pig. 5.

According to Pig. 1 and 2 has the device according to the invention a housing C for a bath, which consists of an outer wall 1 Steel plates reinforced with professional steel, a lining layer 2 made of heat-insulating bricks and an inner, heat insulating brick layer 3 is made. One down extending partition 4 is provided in the middle of the housing C. and divides the housing into a displacement chamber 14 and a heating chamber 15. Communication passages 12 and 13 are between the lower end of the partition 4 and the lower portion 11 of the housing G is provided. An upward dividing wall, i.e. an overflow weir 5 »is in the decomposition chamber 14 arranged and divides the decomposition chamber 14 into a gas blowing compartment 16 and an overflow compartment 17. i.e., an overflow weir 6 is also installed in the heating chamber 15 and divides a combustion gas blowing compartment 18 and an overflow department 19.

The overflow compartments 17 and 19 are staggered, as in! ig. 2 is shown. The overflow department j7 stands with

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the blowing department 18 via the connecting passage 12 below the overflow department 19 in connection. The overflow department 19 is connected to the blowing compartment 16 via a connecting passage 15 below the overflow compartment 17. The Department 16 into which the gas to be decomposed is blown is equipped with a suitable number of gas blowing pipes 7, and the compartment 18 into which the combustion gas is blown is also provided with a suitable number of gas blow pipes 9. Furthermore, an outlet pipe 8 for the decomposed gases is above the decomposition chamber 14 and an outlet pipe 10 for the combustion gases are arranged above the hot chamber 15.

In operation, a combustion gas is drawn into the combustion gas pipes 9 and a hydrocarbon gas to be decomposed is blown into the hydrocarbon gas pipes 7. The gas flows relatively uniformly from small openings in the tube 7. The hydrocarbon gas that is in the heating medium, e.g. the molten Metal, preferably molten lead, is blown in, is heated and decomposed by the molten metal. To the At the same time, the molten metal flows into the blowing section 16 due to the formation of foam by the hydrocarbon pipe 7 upwards, and the liquid level I ^ rises above the upper one Edge of the overflow weir 5. As a result, the molten metal flows into the overflow compartment 17. On the other hand, the decomposed one is decomposed Gas withdrawn through outlet pipe 8. At this point, the decomposed gas is from the droplets of the molten metal has been separated in the upper part of the Zeraetzungkaramer 14, so that the molten metal does not exit through the outlet pipe 8.

The molten metal in the overflow recess 17 flows through the passage 12 into the department 18.

In the compartment 18 is 9 combustion gas through the fuel gas pipe blown so that the molten metal is heated. The molten metal in the combustion gas blowing compartment 18

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flows into the overflow compartment 19 as the liquid level lip is raised in the same way as in the decomposition chamber. On the other hand, the combustion gas is discharged through the exhaust pipe 10. The molten metal from the overflow compartment 19 flows into the gas blowing compartment 16 through the other communication passage 13 provided adjacent to the communication passage 12, thereby repeating the above-mentioned movement. The molten metal is successively circulated through the spaces 16, 17, 12, 18, 19, 13 and 16, and the gas is decomposed during the circulation process.

The one in Pig. The device shown in FIGS. 3 and 4 is provided with decomposition chambers 14 located on both sides of the heating chamber are arranged. Otherwise there is agreement with the Embodiment according to Pig. 1 and 2. Corresponding parts are given the same reference numerals. At this Embodiment is the molten metal on the same Type as described above.

The embodiment of the Pig. 5 and 6 show a construction example a decomposition chamber 14 which is arranged annularly around a heating chamber 15 and substantially with the embodiment after Pig. 1 and 2 match. Correspondingly, the same parts are given the same reference numbers.

In this embodiment, an overflow compartment is 19 µm arranged around a circular compartment 18 into which the combustion gas is blown. An overflow department 17 and an area into which the gas to be decomposed is blown through the decomposition chamber 14 around the overflow compartment 19 made around. In the illustrated embodiment are four combustion gas blow pipes 7 arranged offset by an angle of 90 °, and the connecting passages 12 and 13 are each arranged in four places so that the molten metal airculate in the manner required and described above

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can. However, the number of arrangements and elements can can be selected as desired.

In each of the embodiments described above, the circulation of the warming device carried out in the desired manner and so can the collection of the decomposed hydrocarbons off gases can be carried out effectively.

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Claims (2)

_ ₈ _ 2Ü58553 Claims Process for the continuous decomposition of carbons in a heating medium bath, thereby It is indicated that a hydrocarbon is placed in a heating medium in a decomposition chamber that one draws off the gaseous product which is generated in the decomposition chamber at the upper part of the decomposition chamber, that one draws off the cooled heating medium by a gas-lifting effect of the hydrocarbon and the decomposed product is allowed to flow over an overflow weir of the decomposition chamber and is passed into the heating chamber introduces a combustion gas into the heating means within the heating chamber and heats the heating means that the combustion gas is drawn off in the upper region of the heating chamber, and the heated heating medium is passed through a gas lifting effect of the combustion gas over an overflow weir the heating chamber and leads into the decomposition chamber. . 2. Apparatus for performing the method according to claim 1, characterized by a decomposition chamber (14) with a tube (7) for blowing in hydrocarbon in the lower area, an overflow weir (5) in the middle area for the heating medium, an outlet (8) for the decomposed product in the upper area, a heating chamber (15) with a pipe (9) for blowing in a combustion gas in the lower area and an overflow weir (6) for the heating medium in the middle area, through an outlet (10) for the combustion gas in the upper area, an overflow compartment (17) of the decomposition chamber (14), which with the lower part of the heating compartment (18) and an overflow 109839/1729 2US8553 compartment (19) connected to the lower compartment of the decomposition compartment (16) connected is. 10 9 8 39/1729 Blank page