公开(公告)号：ZA201407230B

公开(公告)日：2017-05-31

申请号：ZA201407230

申请日：2014-10-06

Applicant: STORA ENSO OYJ A FINNISH COMPANY

Inventor： OUTI KYLLIÄINEN ,  JARI RÄSÄNEN ,  ANTERO LAITINEN ,  OLLI AALTONEN ,  ALI HARLIN

Abstract: A method of deoxygenation of tall oil as well as methods for the production of aliphatic hydrocarbons and polymerizable monomers from tall oil. Sulphurous crude tall oil together with hydrogen gas is fed into a reactor comprising a catalyst bed. The oil is catalytically deoxygenated by hydrogen in the bed by use of a sulfided metal catalyst, e.g. a NiMoS catalyst. The flow exiting the reactor is cooled down and a hydrocarbon-bearing liquid phase is separated from a gas phase, followed by subjecting the liquid phase to distillation for removal of useless aromatic hydrocarbons and then to steam cracking to form a product containing olefins such as ethylene or propylene. By regulation of the deoxygenation temperature to be at least 270° C. but less than 360° C. the yield is rich in linear and cyclic aliphates that usefully turn to olefins in the steam cracking, while formation of napthalenes is reduced.

公开(公告)号：ZA201501888B

公开(公告)日：2016-06-29

申请号：ZA201501888

申请日：2015-03-19

Applicant: STORA ENSO OYJ A FINNISH COMPANY

Inventor： HEIDI SAXELL ,  LARS AXRUP ,  CECILIA LAND HENSDAL ,  ISTO HEISKANEN

Abstract: A method for the production of highly refined or microfibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by mechanical means to obtain the final product. Dried cellulosic pulp is produced as an intermediate product of the method, having an average fibre length of at least 0.4 mm, while less than 50% of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.