Basf Se Corporation

Dirk Grossschmidt

Maximilian Vicari

Christian Weichert

Horst Neuhauser

Michael Russ

Kai Rainer Ehrhardt

Michael L Hayes

Peter Renze

Mirko Haider

Hans Zapf

Ekkehard Schwab

Thomas Heidemann

Bilge Yilmaz

Torsten Mäurer

Gerrit Waters

Georg Seeber

Dirk Klingler

Bernd Zoels

Lucia Koenigsmann

Piotr Makarczyk

Jens Denecke

Christian Baltes

Andreas Joa

Ravindra Aglave

Juergen Michel

The invention relates to a continuous method for producing acetylenes and syngas by partially oxidizing hydrocarbons with oxygen. A first feed stream () containing one or more hydrocarbons and a second feed stream () containing oxygen are &#x2014;mixed in a ratio of the mass flows of the second feed stream () to the first feed stream () corresponding to an oxygen number of less than or equal to 0.31, said streams being heated separately from each other, &#x2014;and fed to a combustion chamber (FR) via a burner block (BR), the partial oxidation of the hydrocarbons being carried out in said combustion chamber, &#x2014;thereby obtaining a first cracked gas stream I. The invention is characterized in that &#x2014;the first cracked gas stream Iis precooled to a temperature ranging from 100 to 1000&#xb0; C. in a prequench region (H), thereby obtaining a second cracked gas stream II, &#x2014;50 to 90% of the solids contained in the second cracked gas stream IIare separated therefrom in a solid-gas separating device (A), thereby obtaining a solid stream Iand a third cracked gas stream III, &#x2014;the third cracked gas stream IIIis cooled to 80 to 90&#xb0; C. by injecting water in a total quench region (B), thereby obtaining a fourth cracked gas stream IVand a first process water stream I, &#x2014;the fourth cracked gas stream IVundergoes a fine separation of solids in one or more scrubbing devices (C, D), thereby obtaining one or more process water streams II, IIIand a product gas stream VI, &#x2014;the process water streams I, II, IIIare merged into a combined process water stream IV, &#x2014;the combined process water stream IVis partly recirculated, as stream V, into the total quench region (B) and otherwise undergoes a cleaning process, as stream VI, by means of a partial evaporation process, thereby obtaining a cleaned process water stream VII, &#x2014;which is cooled by a recooling device (F), partially recycled, as stream VIII, into the method, and otherwise discharged, as stream IX.

Method for producing acetylenes and syngas

Described is an iron-containing zeolite wherein the number of iron sites, based on the zeolite, is greater than the number of cationic positions in the zeolite. Also described is an iron-containing zeolite preparable by gas phase reaction with iron pentacarbonyl, said zeolite having a greater specific surface area than iron-containing zeolites prepared analogously by ion exchange and/or being more hydrothermally stable than iron-containing zeolites prepared analogously by ion exchange, or wherein the number of iron clusters larger than 10 nm is less than 15% by weight, based on the total amount of iron. Further described is a process for preparing an iron-containing zeolitic material, which comprises doping with iron by means of a gas phase reaction using iron pentacarbonyl. Further described is a process for catalytic reduction of nitrogen oxides using catalysts comprising said iron-containing zeolitic materials.

Ferrous zeolite, method for producing ferrous zeolites, and method for catalytically reducing nitrous oxides

A process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, is disclosed. The process consists of separately preheating and then mixing a first input stream containing a hydrocarbon and a second input stream containing oxygen, supplying the first input stream and the second input stream via a burner block to a firing space, quenching a cracking gas obtained to produce a process water stream and a product gas stream, cooling the product gas stream in a cooling column by direct heat exchange with cooling water, depleting soot in an electrostatic filter, combining all process water streams and passing through soot channels, subjecting the combined process water stream to a cleaning operation by partial vaporization in a one-stage flash vessel to obtain a cleaned process water stream, and recycling the cleaned process water stream into the process.

Process for preparing acetylene and synthesis gas

The invention proposes a method for producing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, wherein a first feedstock (), containing one or more hydrocarbons, and a second feedstock (), containing oxygen, &#x2014;are preheated separately from one another, &#x2014;are fed via a burner block (B) to a combustion chamber (F), in which the partial oxidation of the hydrocarbons takes place, &#x2014;obtaining a cracked gas, which is quenched by injecting a quench oil downstream of the furnace body at 200&#xb0; C. to 250&#xb0; C., wherein &#x2014;a flow of product gas Ig is obtained, which &#x2014;is cooled in a burner column (BK) with further quench oil, obtaining &#x2014;a flow of product gas IIg cooled to 60&#xb0; C. to 90&#xb0; C., which &#x2014;is guided into a final cooler (SK), in which a flow of product gas IIIg, cooled to 20&#xb0; C. to 50&#xb0; C., is obtained by direct thermal exchange with water, as well as a flow of process water I liq &#x2014;which is characterized in that the flow of process water I liq is subjected to purification by partial evaporation in a single-stage expansion chamber, wherein the flow of process water I liq is vaporized to a proportion of 0.01 percent by weight to 10 percent by weight, relative to the total weight of same, obtaining a purified flow of process water II liq which is removed in the waste water.

Method for producing acetylene and synthesis gas

A process for partial oxidation of hydrocarbons in a reactor, in which a stream comprising the hydrocarbon and a stream comprising the oxygen are fed to the reactor, wherein both streams fed to the reactor are conducted within the reactor separately through in each case one or more spatially separate lines, these lines having turbulence generators in their interior, owing to which, as a result of the imposed deflection of the flow direction downstream of turbulence generators, a highly turbulent flow field forms, and the streams are then mixed in a mixing zone after exiting from the lines and then converted in a reaction zone.

Process and apparatus for thermal partial oxidation of hydrocarbons

A method of production of a catalyst that has 0.05-0.25 wt. % of precious metal, preferably for the oxidative dehydrogenation of olefinically unsaturated alcohols, comprising the following steps

Precious metal catalysts with low metal loading for oxidative dehydrogenations

The present invention provides a process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, by first separately preheating the starting gases comprising a hydrocarbon-containing stream and an oxygen-containing stream and then mixing them in a mixing zone and, after they have flowed through the burner block, reacting them in the firing space and then cooling the products rapidly, wherein the surface on the firing space side of the burner block is covered with a purge gas stream and this purge gas stream is introduced through the burner block by means of several bores, where the averaged ratio of effective surface area of the burner block to number of these bores in the burner block for the purge gas stream is within a range from 5 to 100 cm.

Process and apparatus for preparing acetylene and synthesis gas

A process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen, by first separately preheating the hydrocarbon gas and oxygen gas, and then reacting the gases and cooling the products rapidly. The reactor wall is blanketed with a purge gas stream, introduced through a plurality of feed lines. These feed lines deliver purge gas in a vector direction within a 10&#xb0; angle of the main flow direction of the reactive gas stream. The purge gas is delivered at multiple stages relative to the main flow direction of the reactive gas stream, and the free cross section of the firing space available to the reactive gas stream, at the height of the feed lines of the purge gas stream, is approximately constant.

In the process for hydrogenating butadiyne over a catalyst which comprises at least one platinum group metal on an inorganic metal oxide as a support, the hydrogenation is performed at a pressure in the range from 1 to 40 bar and a temperature in the range from 0 to 100&#xb0; C., and from 0.05 to 5% by weight, based on the overall catalyst, of platinum group metal is present on the support.

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Mannheim, Germany

Dirk Grossschmidt