Method and apparatus for producing a chemical compound and the produced chemical compound

Patent metadata

Field	Value
Publication number	US-10442998-B2
Application number	US-201615735059-A
Country	US
Kind code	B2
Filing date	Jun 9, 2016
Priority date	Jun 12, 2015
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A method and an apparatus for producing a chemical compound from biomass based raw material. The bio-mass based raw material is gasified in a gasification device for forming a gasification gas, the gasification gas is treated in the reactor which includes at least one catalyst layer including Fe-based catalyst for forming a hydrocarbon composition, at least one hydrocarbon fraction including olefins is recovered from the hydrocarbon composition, and a chemical compound is formed from the hydrocarbon fraction. Further, the invention relates to the produced chemical compound.

First claim

The invention claimed is:

1. A method for producing a chemical compound from biomass based raw material, the method comprising:
gasifying the biomass based raw material in a gasification device forming a gasification gas,
treating the gasification gas in a reactor which has a catalyst layer consisting essentially of a Fe-based catalyst for forming a hydrocarbon composition,
recovering at least one hydrocarbon fraction comprising olefins from the hydrocarbon composition so that the hydrocarbon fraction comprising:
C3 and C4+ olefins and paraffines,
C4 olefins and paraffines, and/or
C6-C18 α-olefins,

are separated from the hydrocarbon composition, and
treating the separated hydrocarbon fraction forming a chemical compound, with a material selected from the group consisting of: aromatics, maleic anhydride and/or alkenyl succinic anhydride, and the treatment is carried out such that the hydrocarbon composition or the hydrocarbon fraction comprising C3 and C4+ olefins and paraffines is treated by an aromatization which is performed at normal pressure and in the presence of a zeolite catalyst for forming aromatics, and/or the hydrocarbon fraction comprising C4 olefins and paraffines is partially oxidized forming maleic anhydride.

2. The method according to claim 1 , wherein the reaction pressure in the gasification device is between 1-10 bar.

3. The method according to claim 1 , wherein the temperature of the catalyst layer is between 200-350° C. in the reactor.

4. The method according to claim 1 , wherein the hydrocarbon composition is condensated by water.

5. The method according to claim 1 , wherein the hydrocarbon composition is fractionated for recovering at least one hydrocarbon fraction comprising olefins.

6. The method according to claim 5 , wherein the fractionating of the hydrocarbon composition is performed by using distillation.

7. The method according to claim 1 , further comprising:
treating the C3 and C4+ olefins and paraffines by an aromatization performed at normal pressure and in the presence of a zeolite catalyst for forming aromatics,
separating a benzene fraction from the aromatics, and
partially oxidizing the benzene fraction forming maleic anhydride.

8. The method according to claim 1 , wherein the hydrocarbon fraction comprising C6-C18 α-olefins is treated by a reaction with maleic anhydride so that olefins react with maleic anhydride for forming alkenyl succinic anhydride.

9. The method according to claim 1 , further comprising removing sulphur from the at least one hydrocarbon fraction in a sulphur removing bed using a second Fe-based catalyst or a modified Fe-based catalyst.

Assignees

• Teknologian Tutkimuskeskus Vtt Oy

Inventors

• Reinikainen Matti
• Hulkko Janne

Classifications

• C07C1/0485

  Set-up of reactors or accessories; Multi-step processes · CPC title

• C07C51/567

  by reactions not involving carboxylic acid anhydride groups · CPC title

• C10G2300/1011

  Biomass · CPC title

• C07C51/54

  Preparation of carboxylic acid anhydrides (by oxidation C07C51/16) · CPC title

• C07C2523/745

  Iron · CPC title