A FLUID MIXER AND A METHOD FOR MIXING FLUIDS

    公开(公告)号:SG11202107691VA

    公开(公告)日:2021-08-30

    申请号:SG11202107691V

    申请日:2020-02-05

    Applicant: NESTE OYJ

    Abstract: A fluid mixer for a reactor of a hydrocarbon processing plant includes a substantially cylindrical mixing chamber, at least one first inlet for conducting first fluid to the mixing chamber from above the mixing chamber and along a side wall of the mixing chamber to produce a spiral stream in the mixing chamber, at least one second inlet for conducting second fluid tangentially into the spiral stream, and an outlet channel for conducting the first and second fluids downwards out from the mixing chamber. The outlet channel is concentric to the mixing chamber and includes a mixing structure for enhancing mixing of the first and second fluids. At least a part of the mixing structure is located below an upper edge of the outlet channel and produces turbulence in a stream of the first and second fluids flowing in the outlet channel.

    Purification of recycled and renewable organic material

    公开(公告)号:FI128911B

    公开(公告)日:2021-03-15

    申请号:FI20185650

    申请日:2018-07-20

    Applicant: NESTE OYJ

    Abstract: Provided herein is a method of purifying a recycled or renewable organic material, wherein the recycled or renewable organic material comprises one or more impurities selected from a group consisting of silicon compounds, phosphorous, Cl and sterols, comprising the steps of (a) providing the recycled or renewable organic material; (b) optionally pre heat treating the recycled or renewable organic material at 180 to 325°C, and optionally adding acid before or after the pre heat treatment process, and optionally filtering the pre heat treated recycled or renewable organic material after the pre heat treatment; (c) heat treating the recycled or renewable organic material at 100 to 450°C, optionally in the presence of an adsorbent, optionally adding water before or during the heat treatment process, and optionally adding acid before or after the heat treatment process, and optionally filtering the heat treated recycled or renewable organic material after the heat treatment; (d) optionally evaporating volatile silicon compounds from the heat treated recycled or renewable organic material compounds thereby reducing the silicon content of the heat treated recycled or renewable organic material; (e) optionally thermally cracking the recycled or renewable organic material thereby reducing the oxygen and phosphorous content of the heat treated recycled or renewable organic material, and optionally removing volatiles from the thermally cracked recycled or renewable organic material, and optionally removing solids/precipitates from the recycled or renewable organic material; and (f) hydrotreating the heat treated recycled or renewable organic material in a presence of a hydrotreating catalyst; to obtain purified hydrotreated recycled or renewable organic material.

    METHOD FOR PRODUCING KETONES FOR FUEL AND OIL APPLICATIONS

    公开(公告)号:CA3077381A1

    公开(公告)日:2019-06-27

    申请号:CA3077381

    申请日:2018-12-13

    Applicant: NESTE OYJ

    Abstract: The present invention relates to a method for producing ketones, suitable for manufacture of base oil or diesel fuel components,from a feedstock of biological origin comprising fatty acids and/or fatty acid derivatives,and being at least partly in liquid form, by subjecting the feedstock to a catalytic ketonisation reaction, wherein the ketonisation reaction is carried out in a system comprising one or more ketonisation reactor(s) (A', B') each comprising at least one ketonisation catalyst bed(G'),further comprising that - the feedstock(1')is introduced into a ketonisation reactor together with a carrier gas stream comprising CO2 (5'); - gas comprising CO2 (8', 10') is separated from the effluent (2', 4') exiting a ketonisation reactor whereby the effluent comprising ketones is used either as a feedstock (2') for a further ketonisation reactor or for recovery (4') of ketones from the effluent; and - the separated gas comprising CO2 (8', 10') is recycled and used in the carrier gas stream in a ketonisation reactor (A', B'). The invention further relates to a system for producing ketones in one or more ketonisation reactor and the use of a gas comprising CO2 and produced in the ketonisation reactors as a carrier gas.

    PROCESS FOR THE PRODUCTION OF RENEWABLE BASE OIL, DIESEL AND NAPHTHA

    公开(公告)号:CA3064982A1

    公开(公告)日:2018-12-27

    申请号:CA3064982

    申请日:2018-06-15

    Applicant: NESTE OYJ

    Abstract: The present invention relates to the field of hydrotreatment of biological oil, in particular to methods for producing renewable base oil and a diesel oil from low-value biological oils. It was found that low-value biological oils containing free fatty acids and fatty acid esters can be processed into a renewable base oil and a renewable diesel oil in an efficient manner by first separating at least part of the free fatty acids from the feedstock and then processing separately this free acid feed separately in a ketonisation reaction followed by hydrodeoxygenation and hydroisomerisation reactions to yield a renewable base oil stream. The remaining free fatty acid depleted feed is processed in a separate hydrodeoxygenation and hydroisomerisation step to yield a renewable diesel stream. Splitting the feedstock into two separate streams provides surprising advantages compared to a combined treatment of the entire feedstock.

    A method for producing a fuel product

    公开(公告)号:FI20236223A1

    公开(公告)日:2025-05-03

    申请号:FI20236223

    申请日:2023-11-02

    Applicant: NESTE OYJ

    Abstract: The present invention relates to a method for processing a low-temperature Fischer-Tropsch process effluent (1) into a fuel product, the method comprising fractionating the Fischer-Tropsch effluent in a first fractionation (2), separating water and oxygenates (4); and processing a fraction consisting mainly of C17 and higher hydrocarbons by a catalytic hydrocracking (21) to produce a hydrocracked liquid product (22) and a further fraction consisting mainly of C17 and higher hydrocarbons (23). Thereafter the liquid products are processed by catalytic hydroisomerisation (7) to produce a product mixture (8), which is fractionated in a second fractionation (9) and a third fractionation (14). The method further comprises directing at least some of the gases to a reverse water gas shift reaction (18); and recycling a heavy fraction consisting mainly of C17 and higher hydrocarbons (23) to the first fractionation (2).

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