Haldor Topsoe A/s

Haldor Tops.o Slashed.e A/s

Haldor Topsoe, S.a.

Haldor Topoe A/s

Sven I Hommeltoft

Haldor F Topsoe

Claus J Jacobsen

A process for the recovery of an acid in its anhydrous form from an aqueous solution containing the acid in its hydrated form. Adding to the solution a weak base in the form of a soluble salt of the acid and concentrating the solution containing the acid hydrate and the salt of the acid to a substantially water-free, acid-salt mixture. The acid is distilled off in its anhydrous form from the acid salt mixture.

Process for the recovery of a strong acid from an aqueous solution

Process for the recovery of spent fluorinated sulfonic catalyst from acid soluble oil (ASO) being formed during alkylation of hydrocarbons in the presence of the acid catalyst. The process includes washing the ASO with water and recovering an aqueous solution of the acid catalyst, neutralizing the acid in the aqueous solution by adding to the solution a basic compound being selected from the group of amino compounds, ammonia and ammonium salts, thereby, forming ammonium salts of the acid catalyst with a melting point at which the obtained acid catalyst salt in a subsequent concentration and drying step is in the form of a melt, drying the melt, and finally recovering the acid catalyst by protonization of the dried melt with sulfuric acid and distilling off the recovered acid catalyst from the sulfuric acid.

Process for the recovery of alkylation catalyst

A process for the recovery of an acid in its anhydrous form from an aqueous solution containing the acid in its hydrated form. The process includes adding to the solution a weak base in the form of a soluble salt of the acid, and concentrating the solution containing the acid hydrate and the salt of the acid to a substantially water-free, acid-salt mixture. The acid is distilled off in its anhydrous form from the acid-salt mixture.

Process for the alkylation of a hydrocarbon feedstock with an olefinic alkylating agent comprising the steps of contacting the hydrocarbon feedstock and the olefinic alkylating agent with a fluorinated alkoxy alkane sulphonic acid catalyst for a sufficient time and recovering a product stream of alkylated hydrocarbons.

Alkylation process

Process for the recovery of fluorinated sulphonic acid catalyst from tar being formed during alkylation of hydrocarbons in the presence of the fluorinated sulphonic acid catalyst and containing spent fluorinated sulphonic acid catalyst in form of salts with basic components in the tar, which process comprises,

Process for the recovery of spent fluorinated sulphonic acid catalyst in

A method of recovery of acid catalyst from acid soluble oil being formed in a process for alkylation of hydrocarbons and containing valuable amounts of spent acid catalyst which method comprises,

Recovery of spent acid catalyst from alkylation of hydrocarbons

A process for the alkylation of hydrocarbon feedstock with an olefinic alkylating agent in the presence of a hydrogen fluoride catalyst, wherein the hydrogen fluoride catalyst is supported on a support material comprising a solid material with a Hammett acidity H.sub.0 &gt;-8 calculated on the material in protonated form.

Process for the recovery of acid catalyst from acid catalyzed hydrocarbon conversion processes comprising the steps of: passing a product stream of converted hydrocarbons leaving the hydrocarbon conversion process and containing the acid catalyst through a fixed bed of a solid adsorbent material having affinity for the acid catalyst and, thereby, adsorbing the acid catalyst on the material; desorbing the adsorbed acid catalyst by passing a process stream of hydrocarbons through the adsorbent bed; and cycling the process stream together with the desorbed acid catalyst contained therein to the hydrocarbon conversion process.

Method of recovery acid catalyst from acid catalyzed processes

Aliphatic hydrocarbons are alkylated in the presence of a fluorinated sulphonic acid catalyst. The catalyst, which is adsorbed on a polar contact material, is pushed sequentially through first and second reactors by a feedstream and is then recycled back to the first reactor without reversing the flow direction of the process stream.

A process for liquid phase alkylation of a hydrocarbon substrate with an olefinic alkylating agent comprising the steps of passing a process stream of the hydrocarbon substrate and alkylating agent at alkylating conditions through a fixed bed alkylation reactor of particulate polar contact material in the presence of a fluorinated sulfonic acid catalyst.

Growing community of inventors

Hillerod, Denmark

Sven I Hommeltoft