DE1928093B - Process for the production of ethylene or synthesis gas by thermal splitting of hydrocarbons with water vapor - Google Patents

Description

1 sheet of drawings

Claims (2)

1 2 Patent Claims · The method according to the invention offers the possibility of not only the furnaces operated with burners 1. Process for the production of ethylene or to replace and thereby a coking of cracked synthesis gas Hydrogen to be milled by thermal cleavage of carbon products on the inside of the cans with water vapor, characterized by the, but also the heat content of a noble gas, characterized in that the mixture of especially helium from a nuclear reactor and hydrocarbons and to use water vapor indirectly for a chemical process. The cans located in a metal bath and a cleavage of the hydrocarbon-steam-emitting heat Noble gas from a nuclear reactor mix at a temperature of about 900 to is passed through the metal bath. io 950 ° C for the production of ethylene or synthesis gas 2. The method according to claim 1, characterized by the use of the noble gas from a indicates that the noble gas is passed through several nuclear reactors with a temperature of 900 to metal baths connected in series or levels 1000 ° C possible. a metal bath with decreasing temperature and the mixture of hydrocarbons 15 noble gas through several series-connected and water vapor in countercurrent to it led to tall baths or stages of a metal bath with decreasing will. mender temperature passed and the mixture from Hydrocarbons and water vapor in contrast electricity led to it. 20 The metal- The invention relates to a method for producing steam can preferably be fed into one of the downstream ment of ethylene or synthesis gas through thermal th metal baths in which a Splitting of hydrocarbons with water vapor. Condensation of the metal vapor takes place, whereby From the German patent specification 744 224 there is already 25 a recirculation of the condensation process for the production of synthesis gas by the amount of metal from the downstream bath in the conversion of methane-containing gases with carbon - first bath or the first stage,
acid and water vapor that occur when heating the In the drawing, a device for drive-through system is known. conduct of the procedure. This consists in In the case of further known, large-scale equipment consisting essentially of an oven or a drum mile, applied process for the production of ethylene or those in the chambers I, II, III through the partition walls In a modified form of synthesis gas, the ther- 2, 3 is subdivided. ! Each of these chambers takes one mix fission in gas-heated tube furnace pre-amount of liquid metal, preferably lead, so that take what the disadvantage of a very high focal point the baths 4, 5, 6 are formed. Substance consumption and where there is a risk of 35 An exchanger? outside the oven or that pipe sections locally uncontrollably overheated the drum 1, the hydrocarbons are at 8, because the flame irradiation when the water vapor is arranged at 9 and a heat transfer medium, e.g. B. many individual burners over the entire pipe surface exhaust gas, supplied at 10. The cooled heat transfer medium is not even. can escape at 11 while the hydrocarbon Also, the use of the heat from exhaust gases is a high material-water vapor mixture through the line 12 in her temperature, z. B. from 900 to 1100 ° C, for which the exchanger tubes 13 of the bath 6 is passed. In steam generation and the use of the heat content, a temperature of around 380 ° C prevails, as is known from exhaust gases in a gas turbine. In order for the hydrocarbon-water vapor mixture to be heated to approximately such a temperature by converting it into steam, an appropriate steam generation system is always required a second exchanger 15 of the bath 5, which a Tempe gas turbine can only be used up to 600 to 700 ° C. The mixture must be approximately heated to such a temperature that the temperature is heated. Ultimately, the unfortunately heated gas passes into a second gas turbine to 5 "device 16, the mixture through the bath 4, which has a temperature of 900 to 1000 ° C for further use and where the heat content of the through the gas turbine-directed splitting of the hydrocarbons takes place, which in the case of gas are diverted from further exchangers or steam generation units for further use,
layers can be switched. The preferred method of application The invention is based on the object of conveying a 55 lium from a nuclear reactor through the pipe 18 To create the method of the type mentioned, introduced into the bath 4, where it is in the direction of the arrow in which a high degree of efficiency can be achieved, ie a le K bubbles upwards and over the transfer pipe 19 optimal use of the heat of an exhaust gas can be achieved in the bath 5 of the chamber II. The helium that is and the disadvantages of known methods and AnIa- in the transfer pipe 19 a temperature of gen, e.g. B. has a local overheating of Wärmetau- 60 about 700 to 750 ° C, is in the bath 5 to about shear, is avoided. 600 ° C cooled and passes through the further pipe To solve this problem, the invention provides a 20 in the bath 6. With a temperature of approximately Process of the type described, in which the 400.degree. C., the helium leaves the outlet connection 21 Mix of hydrocarbons and water vapor and is optionally with an intermediate cooling through cans and 65 located in a metal bath are fed back to the nuclear reactor to after Aufein heat-emitting noble gas from a nuclear reactor would take heat in the circuit back to the pipe is passed through the metal bath. 18 to be directed.