Paraffinic product, method for producing paraffinic product, and use of paraffinic product

Abstract

To provide an electrotechnical fluid having a low electrical conductivity, a method for producing the same, and use thereof.SOLUTION: There is provided an electrotechnical fluid composition comprising 90 wt.% or more of a paraffin in C17 to C18 range, based on a total weight of the composition. A ratio of the amount of C18 i-paraffin to the amount of C18 n-paraffin is greater than 40 based on a weight of the C18 i-paraffin and a weight of the C18 n-paraffin in the composition.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an electrotechnical composition comprising a paraffinic fraction obtained from renewable raw materials, to a process for producing said composition and to the use of said composition. [Background technology]

[0002] Liquid or gaseous electrotechnical fluids are used in electrical equipment, e.g. transformers, capacitors, switchgear, bushings, etc. Electrotechnical fluids typically act as electrical insulators, separating high voltage and grounded parts in the equipment, and as coolants to transfer heat generated in the equipment. In addition to the basic functions mentioned above, electrotechnical fluids should meet other essential conditions and desired requirements, e.g. long service life, operation in a wide range of temperatures, suitable dynamic viscosity, and minimal environmental impact.

[0003] In the technical field of electrotechnical fluids there is an increasing end need for sustainable, bio-based and recycled alternatives.

[0004] In the electrotechnical fluids segment, there is a clear end-user need to develop solutions offering low conductivity combined with other improved features. Current solutions generally do not meet the criteria.

[0005] US Patent No. 5,999,633 discloses renewable hydrocarbon-based insulating fluids containing more than 70% isoparaffins. The disclosure does not teach how to produce fluids that meet the required performance or compositions that meet the required performance.

[0006] US Patent No. 5,399,633 discloses an electrotechnical fluid for electric vehicles having a boiling point in the range of 200° C. to 400° C., the boiling range being less than 80° C., the fluid containing more than 95% by weight of isoparaffins and less than 3% by weight of naphthenes, a biocarbon content of at least 95% by weight, and less than 100 ppm by weight of aromatics. This disclosure does not teach how to produce a fluid that meets the required performance or a composition that meets the required performance. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] International Publication No. 2014 / 128227 [Patent Document 2] International Publication No. 2018 / 078024 Summary of the Invention

[0008] The object of the present invention is to provide a hydrocarbon composition suitable for electrotechnical fluids and which alleviates the above-mentioned disadvantages. The present invention also relates to a method for producing electrotechnical fluids having low electrical conductivity combined with other improved characteristics. Additionally, the present invention relates to the use of the electrotechnical fluids.

[0009] More particularly, the compositions according to the present invention comprise greater than 90 wt-% paraffins in the range C17 to C18, based on the total weight of the composition, and wherein the ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is greater than 40, based on the weight of C18 i-paraffins and the weight of C18 n-paraffins in the composition.

[0010] The experimental section shows the surprisingly good properties of the electrotechnical fluids according to the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The following embodiments are illustrative. Although the specification may refer to "an," "one," or "some" embodiments in some parts, this does not mean that each such reference is directed to the same embodiment or that a feature applies only to a single embodiment. Single features of different embodiments may also be combined to provide other embodiments. Furthermore, the terms "comprising," "containing," and "including" should not be understood as limiting the embodiments to consist only of those features described, and such embodiments may also include features / structures not specifically described.

[0012] All standards referenced herein are to the latest available revisions unless otherwise stated.

[0013] The present invention relates to paraffinic hydrocarbon products which have surprisingly good properties as electrotechnical fluids.

[0014] The present invention discloses a method for the production of an electrotechnical fluid, an electrotechnical fluid and the use of the electrotechnical fluid. More particularly, the present invention discloses a method for the production of an electrotechnical fluid, comprising hydrodeoxygenation and isomerization of a renewable feedstock to obtain a renewable paraffinic feed, and subjecting the obtained renewable paraffinic feed to at least one of the processes for separation, or fractionation, recovery of a hydrocarbon composition useful as an electrotechnical fluid having a boiling point (EN ISO 3405:2011) range lying in the range of about 275°C to about 300°C, preferably in the range of about 280°C to about 300°C. The present invention also discloses the use of the electrotechnical fluid.

[0015] The renewable paraffinic feed may be obtained by hydrodeoxygenation and isomerization of renewable (bio-origin) materials. The thus obtained renewable paraffinic feed has a carbon number distribution in the range of C8-C22 or C10-C20, preferably in the range of C15-C18, and a boiling point range between 140°C and 340°C, preferably between 180°C and 320°C. In an embodiment, the renewable paraffinic feed for separation / fractionation is provided by catalytic hydrotreating and catalytic isomerization of renewable raw materials.

[0016] In certain embodiments, the hydrotreating is catalytic hydrodeoxygenation.

[0017] In certain embodiments, the separation process comprises distillation.

[0018] The boiling range covers the temperature interval from the initial boiling point (IBP), defined as the temperature at which the first drop of distilled product is obtained, to the final boiling point (FBP), when the highest boiling compound has evaporated.

[0019] The EN ISO 3405:2011 and ASTM D86:2015 standards "Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure" and the ASTM D7345:2017 standard "Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure (Microdistillation)" describe distillation methods for measuring the boiling point distribution of liquid fuel products having a boiling point range within the range of 0°C to 400°C (ASTM D7345: 20°C to 400°C). By using ASTM D86 or ASTM D7345, the boiling point is measured at 25 vol-% distillation. The boiling point can also be shown at 88% distillation.

[0020] Process Description The term "hydrotreatment" refers to any catalytic process of organic materials by means of molecular hydrogen. Preferably, hydrotreatment is the removal of oxygen from organic oxygen compounds as water, i.e. hydrodeoxygenation (HDO). Additionally / alternatively, hydrotreatment may be the removal of sulfur from organic sulfur compounds as hydrogen sulfide (HS), i.e. hydrodesulfurization (HDS), the removal of nitrogen from organic nitrogen compounds as ammonia (NH), i.e. hydrodenitrification (HDN), and / or the removal of halogens, e.g. chlorine from organic base compounds as hydrochloric acid (HCl), i.e. hydrodechlorination (HDCl).

[0021] The term "hydrodeoxygenation (HDO)" of, for example, triglycerides or other fatty acid derivatives or fatty acids, refers to the removal of oxygen from the carboxyl groups as water, for example by means of molecular oxygen in the presence of a catalyst.

[0022] Suitable reaction conditions and catalysts for the hydrodeoxygenation of renewable feedstocks and the resulting isomerization of n-paraffins are known. Examples of such processes are given in Finnish Patent Publication 100248, Examples 1-3, and in WO 2015 / 101837.

[0023] The term "deoxygenation" refers to the removal of oxygen from organic molecules, such as, for example, fatty acid derivatives, alcohols, ketones, aldehydes, and / or ethers, by any of the means mentioned above or by decarboxylation or decarbonylation.

[0024] Renewable raw materials Renewable feedstocks (or renewable oils and / or fats) refer to feedstocks derived from biological feedstock components, including oils and / or fats, typically lipids (e.g., fatty acids or glycerides), such as plant oils / fats, vegetable oils / fats, animal oils / fats, fish oils / fats, and seaweed oils / fats, or oils / fats from other microbial processes, such as genetically modified seaweed oils / fats, genetically modified oils / fats from other microbial processes, and genetically modified vegetable oils / fats. Components or derivatives of such materials, such as alkyl esters (typically C1-C5 alkyl esters, e.g., methyl, ethyl, propyl, iso-propyl, butyl, sec-butyl esters, etc.), may also be used. Renewable specifically excludes fossil sources, although recycled fossil materials may be utilized.

[0025] Renewable oils and / or fats may include one type of oil, one type of fat, a mixture of different oils, a mixture of different fats, a mixture of oils and fats, fatty acids, glycerol, and / or mixtures of the above.

[0026] These oils and / or fats typically contain C10-C24 fatty acids and their derivatives, including esters of fatty acids, glycerides, i.e., glycerol esters of fatty acids. Glycerides may specifically include monoglycerides, diglycerides and triglycerides.

[0027] Carbon atoms of renewable or biological origin contain a greater number of unstable radiocarbons ( 14 C). Therefore, 12 C and 14By analyzing the ratio of C isotopes, it is possible to distinguish carbon compounds from renewable or biological sources or raw materials from carbon compounds from fossil sources or raw materials. Thus, a specific ratio of the isotopes can be used as a tag to identify renewable carbon compounds and distinguish them from non-renewable carbon compounds. The isotope ratio does not change during chemical reactions. Examples of suitable methods for analyzing the content of carbon from biological or renewable sources are DIN 51637 (2014), ASTM D6866 (2020) and EN 16640 (2017). As used herein, the carbon content from biological or renewable sources is expressed as biogenic carbon content, which means the amount of biogenic carbon relative to the weight percent of total carbon (TC) in a material (according to ASTM D6866 (2020) or EN 16640 (2017)).

[0028] By biologically-sourced feedstock or raw material is meant a material that typically has only biogenic carbon content.

[0029] Typically, hydrocarbons produced from 100% palm oil have a biogenic carbon content of about 100 wt-%.

[0030] Typically, hydrogenated animal fats have a biogenic carbon content of about 100 wt-%.

[0031] Typically, fossil crude oil based diesel fuel has about 0 wt-% biogenic carbon content.

[0032] In certain embodiments, the biogenic carbon content of the feedstock or renewable raw material, or renewable paraffinic feed obtainable therefrom, is greater than 50 wt-%, preferably the biogenic carbon content is greater than 90 wt-%, and most preferably the biogenic carbon content is greater than 99 wt-%.

[0033] Renewable paraffinic feed and its preparation The preparation of renewable paraffinic feeds often involves reactions that remove oxygen from renewable feedstocks, and there are a number of strategies for doing this. Deoxygenation may involve one or more of the following reactions: 1) Hydrodeoxygenation (HDO), hydrogenation of oxygen bonds, removing oxygen as HO; 2) Decarboxylation, in which oxygen is removed in the form of CO2; 3) Decarbonylation, in which oxygen is removed in the form of CO.

[0034] The process conditions for hydrodeoxygenation are well known in the art. For example, hydrodeoxygenation of renewable feedstocks can be carried out over a metal sulfide catalyst. The metal can be one or more group IV metals, such as Mo or W, or one or more non-noble group VIII metals, such as Co or Ni. The catalyst can be supported on any convenient support, such as alumina, silica, zirconia, titania, amorphous carbon, molecular sieves, or combinations thereof. Usually, the metals are impregnated or deposited on the support as metal oxides. They are then typically converted to sulfides. Examples of typical catalysts for hydrodeoxygenation include molybdenum-containing catalysts, such as NiMo, CoMo, or NiW, supported on alumina or silica, although many other hydrodeoxygenation catalysts are known in the art and have been described together or in comparison with NiMo and / or CoMo catalysts. Hydrodeoxygenation is preferably carried out in the presence of hydrogen gas under the influence of a sulfided NiMo or sulfided CoMo catalyst.

[0035] Hydrodeoxygenation is carried out under hydrogen pressure of 10 to 200 barg (bar gauge) at a temperature of 200°C to 400°C for 0.2 hours. -1 ~10h -1During the sulfided catalyst hydrodeoxygenation step, the sulfided state of the catalyst can be maintained by adding sulfur to the gas phase or by using a sulfur-containing feedstock comprising mineral oil blended with a renewable feedstock. The sulfur content of the total feed subjected to hydrodeoxygenation is, for example, in the range of 50 wppm (ppm per weight) to 20,000 wppm, preferably in the range of 100 wppm to 1,000 wppm.

[0036] Efficient conditions for hydrodeoxygenation may reduce the oxygen content of the feedstock to less than 1 wt-%, for example less than 0.5 wt-% or less than 0.2 wt-%. In some cases, conditions may be selected to effect partial hydrodeoxygenation, corresponding to at least 40 wt-%, at least 50 wt-%, or at least 75 wt-% deoxygenation.

[0037] The renewable paraffinic feed that can be used in the present invention can be provided by isomerizing hydrotreated renewable feedstock obtained from renewable feedstock. In general, the renewable paraffinic feed can be produced from renewable feedstock using any known method. A specific example of a method for formulating a renewable paraffinic feed is provided in the European patent application EP 1741768. Other methods may also be implemented, in particular a BTL (Biomass-to-Liquid) process, such as biomass gasification followed by another, such as a Fischer-Tropsch process, may be selected.

[0038] In a preferred embodiment, preparing a renewable paraffinic feed from renewable raw materials includes subjecting the renewable material to a deoxygenation process. Most renewable raw materials include materials with high oxygen content. In an embodiment, the renewable feedstock includes fatty acids or fatty acid derivatives, such as triglycerides, or combinations thereof.

[0039] In the present invention, the deoxygenation method is not particularly limited, and any suitable deoxygenation method can be performed. Suitable methods include, for example, hydrodeoxygenation (HDO), catalytic hydrodeoxygenation (catalytic HDO), catalytic cracking (CC), or a combination thereof. Other suitable methods include decarboxylation and decarbonylation reactions, which may be used alone or in combination with hydrotreating.

[0040] In a preferred embodiment, the deoxygenation treatment to which the renewable feedstock is subjected is hydrotreatment. Preferably, the renewable feedstock is subjected to hydrodeoxygenation (HDO), preferably using a HDO catalyst. Catalytic HDO is the most common method for removing oxygen and has been extensively studied and optimized. However, the present invention is not limited thereto. As the HDO catalyst, a HDO catalyst comprising a hydrogenation metal supported on a support may be used. Examples include HDO catalysts comprising a hydrogenation metal selected from the group consisting of Pd, Pt, Ni, Co, Mo, Ru, Rh, W, or combinations thereof. Alumina or silica are suitable as supports among them. The hydrodeoxygenation step may be carried out, for example, at a temperature of 100 to 500° C. and a pressure of 10 to 150 bar (absolute pressure).

[0041] Preparing the hydrotreated feedstock from a renewable feedstock may include hydrocracking the hydrocarbons in the renewable hydrocarbon feedstock, thus allowing the chain length of the renewable hydrocarbon feedstock to be adjusted and indirectly controlling the product distribution of the produced biohydrocarbon mixture.

[0042] Isomerization Treatment The renewable paraffinic feed of the present invention may be provided by subjecting at least the straight chain hydrocarbons in the hydrotreated feed to an isomerization process to prepare a renewable paraffinic feed, the renewable paraffinic feed and its preparation are described above.

[0043] Isomerization causes branching or isomerization of the hydrocarbon chains of the hydrotreated feedstock, which improves low temperature properties, i.e., the isomerized composition formed by isomerization has better low temperature properties compared to the hydrotreated feedstock.

[0044] The isomerization step may be carried out in the presence of an isomerization catalyst, optionally in the presence of hydrogen added to the isomerization process. Suitable isomerization catalysts include molecular sieves and / or metals selected from group VIII of the periodic table, and optionally a support. Preferably, the isomerization catalyst comprises SAPO-11, or SAPO-41, or ZSM-22, or ZSM-23, or fernerite and Pt, Pd or Ni and Al2O3 or SiO2. Typical isomerization catalysts are, for example, Pt / SAPO-11 / Al2O3, Pt / ZSM-22 / Al2O3, PT / ZSM-23 / Al2O3, and PT / SAPO-11 / SiO2. The catalysts may be used alone or in combination. The presence of added hydrogen is particularly preferred, as it reduces catalyst deactivation. In a preferred embodiment, the isomerization catalyst is a noble metal bifunctional catalyst used in combination with hydrogen, such as, for example, Pt-SAPO and / or Pt-ZSM catalysts. The isomerization step may be carried out, for example, at a temperature of 200-500°C, preferably 280-400°C, and at a pressure of 10-150 bar, preferably 30-100 bar (absolute). The isomerization step may further comprise intermediate steps such as purification and fractionation steps. The isomerization may be carried out, for example, at 300°C-350°C.

[0045] It should be noted that the isomerization process is a step that primarily serves to isomerize the hydrotreated feedstock: whereas most thermal or catalytic conversions (e.g., HDO) result in a low degree of isomerization (usually less than 5 wt-%), the isomerization step carried out in the present invention is a step that leads to a significant increase in the isoparaffin content.

[0046] Thus, the renewable feedstock may be subjected to at least a hydrodeoxygenation reaction in the presence of hydrogen and a hydrodeoxygenation catalyst, and optionally an isomerization reaction in the presence of an isomerization catalyst, to obtain a renewable paraffinic feed. When hydrodeoxygenation and isomerization steps are applied, they may be performed simultaneously or in sequence. The hydrodeoxygenation reaction may be performed in the presence of hydrogen gas and a hydrodeoxygenation catalyst, such as CoMO, NiMo, NiW, CoNiMo, supported on a support, such as an alumina support, a zeolite support, or a mixed support. The hydrodeoxygenation reaction may be performed, for example, at a temperature in the range of 250-400°C and at a pressure of 20-80 barg for 0.5-3 h. -1 and at H2 / oil ratios of 350-900 nl / l, optionally using a catalyst such as NiMo on an alumina support.

[0047] The product of the hydrodeoxygenation step, i.e. the hydrotreated renewable feedstock, may be subjected to an isomerization step in the presence of hydrogen and an isomerization catalyst. The isomerization catalyst may be, for example, a noble metal bifunctional catalyst, such as Pt-SAPO or Pt-ZSM catalyst or NiW. The isomerization step may be carried out, for example, at a temperature in the range of 250-400° C. and at a pressure of 10-60 barg. The isomerization reaction may be carried out, for example, at a temperature in the range of 250-400° C. and at a pressure of 10-60 barg for 0.5-3 h. -1 and at H2 / oil ratios of 100-800 nl / l.

[0048] The hydrodeoxygenation and hydroisomerization steps may be carried out in a single step over the same catalyst bed using a single catalyst for this combined step, e.g. a NiW or Pt catalyst, such as Pt / SAPO in a mixture with a Mo catalyst on a support, e.g. NiMo on alumina.

[0049] Fractionation Step Any known separation / fractionation method, or combination thereof, can be used in the production of the electrotechnical fluid composition of the present invention from renewable paraffinic feed to recover a hydrocarbon composition having a boiling point range in the range of about 275°C to about 300°C, preferably in the range of about 275°C to about 300°C (EN ISO 3405:2011). Exemplary boiling points include about 275°C to about 300°C, and about 280°C to about 300°C, etc. (EN ISO 3405:2011). Preferably, the separation is selected so that the majority of the C18 normal paraffins remain in the residue and the majority of the C18 i-paraffins are in the recovered hydrocarbon composition. By selecting the final boiling point based on this method, it is possible to control the viscosity of the recovered hydrocarbon composition. The amount of impurities can also be reduced, as they are typically condensed in the heavier bottoms hydrocarbons.

[0050] In one embodiment, the electrotechnical fluid composition is produced by subjecting a renewable paraffinic feed to at least one separation process comprising distillation.

[0051] In one embodiment, the electrotechnical fluid composition has an initial boiling point (IBP) of about 275° C., and preferably about 280° C., and a final boiling point (FBP) of about 300° C. (EN ISO 3405:2011).

[0052] In certain embodiments, the process comprises two or more separation steps.

[0053] Selection of renewable feedstocks with favorable properties, for example selecting renewable feedstocks rich in compounds with carbon chain lengths equal to or greater than C16, can be used to improve the yield of electrotechnical fluid compositions.

[0054] The yield of the electrotechnical fluid composition can also be increased by the selection of process conditions in the renewable paraffinic feed manufacturing process.

[0055] In one embodiment, the electrotechnical fluid composition comprises paraffins in the C17-C18 range in an amount of more than 90 wt-%, based on the total weight of the composition, where the ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is greater than 40, based on the weight of C18 i-paraffins and the weight of C18 n-paraffins in the composition. This composition has a surprisingly good performance. The high proportion of C17-C18 paraffins increases the flash point of the composition, while the high weight ratio of C18 i-paraffins to C18 n-paraffins provides a lower viscosity and therefore better flowability, a combination that ensures safe use in a wide range of applications of various electrotechnical fluids over a wide range of temperatures. The better flowability ensures, for example, more efficient heat transfer improving the efficiency of transformers and reducing their operating temperature, which in turn allows for higher power output. It also reduces the risk of localized hot spots, thereby improving the life and safety of the electrotechnical fluid. More efficient cooling also allows for smaller transformer designs, resulting in reduced cost and space requirements.

[0056] In an embodiment, the electrotechnical fluid composition comprises less than 95 wt-% paraffins in the C17-C18 range, based on the total weight of the composition.

[0057] In certain embodiments, the electrotechnical fluid composition comprises a total isoparaffinic content of more than 90 wt-% based on the total weight of the composition.

[0058] In an embodiment, the electrotechnical fluid composition has a pour point (ASTM D5950) of less than -50°C, preferably less than -55°C, more preferably less than -60°C or less than -65°C.

[0059] In one embodiment, the electrotechnical fluid composition comprises less than 2 wt-% C15 or lower lighter paraffins and less than 2 wt-% C20 or higher heavier paraffins, based on the total weight of the composition, and the composition exhibits good performance.

[0060] In an embodiment, the electrotechnical fluid composition has a flash point (EN ISO 2719:2016) of at least 135°C, preferably at least 140°C, more preferably at least 145°C.

[0061] In one embodiment, the electrotechnical fluid composition comprises at most 2 wt-% C19 paraffin, for example between 1 wt-% and 2 wt-% C19 paraffin, based on the total weight of the composition. This composition shows good performance.

[0062] In an embodiment, the electrotechnical fluid composition comprises at most 10 wt-% C16 paraffin, for example 2 wt-% to 10 wt-% C16 paraffin, preferably at most 6 wt-% C16 paraffin, for example 2 wt-% to 6 wt-% C16 paraffin, based on the total weight of the composition. This composition shows good performance.

[0063] In one embodiment, the electrotechnical fluid composition comprises more than 37 wt-% C17 paraffin, based on the total weight of the composition. The composition exhibits good performance.

[0064] In one embodiment, the electrotechnical fluid composition comprises less than 42 wt-% C17 paraffin, based on the total weight of the composition. The composition exhibits good performance.

[0065] In one embodiment, the electrotechnical fluid composition comprises more than 45 wt-%, preferably more than 48 wt-%, more preferably more than 50 wt-% C18 paraffin, based on the total weight of the composition. This composition shows good performance.

[0066] In one embodiment, the electrotechnical fluid composition comprises less than 57 wt-% C18 paraffin, based on the total weight of the composition. The composition exhibits good performance.

[0067] In a preferred embodiment, the electrotechnical fluid composition comprises more than 90 wt-% paraffins in the C18 to C18 range, based on the total weight of the composition, wherein the ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins, based on the total weight of the C18 i-paraffins and the weight of the C18 n-paraffins in the composition, is greater than 40, and comprises more than 45 wt-%, preferably more than 48 wt-%, more preferably more than 50 wt-% C18 paraffins, based on the total weight of the composition.

[0068] In one embodiment, the ratio of the amount of C17 i-paraffin to the amount of C17 n-paraffin, based on the weight of C17 i-paraffin and the weight of C17 n-paraffin combined in the composition, is greater than 20 and preferably less than 30. This composition exhibits good performance.

[0069] In one embodiment, the electrotechnical fluid composition comprises 0.01 to 1 wt-% aromatic compounds, preferably 0.01 to 0.5 wt-% aromatic compounds, based on the total weight of the composition, which shows good performance.

[0070] In one embodiment, the electrotechnical fluid composition comprises, based on the total weight of the composition, 3-4 wt-% C16 i-paraffin, 35-40 wt-% C17 i-paraffin, 50-55 wt-% C18 i-paraffin, 1-3 wt-% C19 i-paraffin, 0.1-1 wt-% C16 n-paraffin, 0.5-2 wt-% C17 n-paraffin, 0.5-2 wt-% C18 n-paraffin, and 0.01-1 wt-% C19 n-paraffin, which shows good performance.

[0071] In some embodiments, the total isoparaffinic content of the composition is greater than 90 wt-% and less than 98 wt-%, based on the weight of the total composition, which indicates good performance, especially in terms of reduced viscosity or improved flowability.

[0072] In one embodiment, the ratio of the amount of C18 i-paraffin to the amount of C18 n-paraffin, based on the weight of C18 i-paraffin and the weight of C18 n-paraffin in the composition, is between 42 and 47, which shows good performance.

[0073] In one embodiment, the electrical conductivity (ISO 6297:1997) at 22° C. is less than 1 pS / m and the NOACK150 (ASTM D5800-15a B) is less than or equal to 8.5 wt-%, indicating good performance.

[0074] In one embodiment, the electrotechnical fluid composition has a molecular weight of 782 to 784 kg / m 3 and a cloud point (ASTM D 7689:2017) of less than -32°C, which indicates good performance.

[0075] In an embodiment, the electrotechnical fluid composition has a biogenic carbon content of more than 50 wt-%, preferably more than 90 wt-% and most preferably more than 99 wt-%, which indicates good performance.

[0076] Preferably, the electrotechnical fluid composition is classified as readily biodegradable according to OECD test guideline 301F.

[0077] In certain embodiments, the electrotechnical fluid composition meets at least one specification set forth in Table 2 of the general specifications of the international standard IEC 60296:2012. In some embodiments, the electrotechnical fluid composition may even meet all specifications set forth in Table 2 of the general specifications of the international standard IEC 60296:2012.

[0078] In some embodiments, the electrotechnical fluid composition may further comprise one or more additives selected from, for example, antioxidant additives, metal passivators, pour point depressants, gassing tendency reducing additives, and any other additives commonly used in electrotechnical fluids.

[0079] In an embodiment, a method for producing an electrotechnical fluid composition comprises the steps of: carrying out at least one hydrodeoxygenation reaction and at least one isomerization reaction of the renewable feedstock to obtain a renewable paraffinic feed; subjecting the renewable paraffinic feed to at least one separation process to recover a hydrocarbon composition having a boiling point range (EN ISO 3405:2011) within the range of about 275°C to about 300°C, preferably within the range of about 280°C to about 300°C. Preferably, the recovered hydrocarbon composition has a boiling range of from about 275° C. to about 300° C., preferably from about 280° C. to about 300° C. (EN ISO 3405:2011).

[0080] In some embodiments, any of the compositions described above are used in electrical devices.

[0081] In certain embodiments, any of the compositions described above are used as a battery coolant in an electric vehicle.

[0082] In certain embodiments, any of the compositions described above are used as a transformer oil or as a transformer oil component.

[0083] In certain embodiments, any of the compositions described above are used as a server farm coolant.

[0084] The embodiments of the present disclosure may be combined in whole or in part with each other to form further embodiments of the present disclosure. Moreover, the specific features or characteristics shown or described in connection with various embodiments may be combined in whole or in part with the features or characteristics of one or more embodiments without limitation. Such modifications and variations are intended to be included within the scope of the present disclosure. The compositions, methods, or uses related to the present disclosure may include at least one of the embodiments of the present disclosure described herein.

[0085] Example 1 (Comparative Example) Table 1 shows the physical and chemical properties of the composition of Example 1 (Comparative).

[0086] Table 2 shows the carbon number distribution of the composition of Example 1 (comparative example).

[0087] The sample composition of Example 1 was produced by hydrodeoxygenation and isomerization of a feedstock of renewable origin as described above. The isomerization step was followed by a distillation step to recover a hydrocarbon composition having an initial boiling point (IBP) of 275.4°C and a final boiling point (FBP) of 321.0°C.

[0088] The carbon number distribution of the composition of Example 1 is shown in Table 2. The composition contains 96.05% i-paraffins and 3.95% n-paraffins. 97.19 wt-% of all paraffins are in the C16-C20 range. The ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is 31.9, based on the weight of the sum of the weight of C18 i-paraffins and the weight of C18 n-paraffins in the composition.

[0089] As shown in Table 1, the conductivity of the composition was 161 pS / m, which means that the composition is not suitable for certain electrochemical applications.

[0090] [Table 1] TIFF2025029045000002.tif222119 TIFF2025029045000003.tif111122

[0091] [Table 2]

[0092] Example 2 Table 3 shows the physical and chemical properties of the composition of Example 2.

[0093] Table 3 shows the carbon number distribution of the composition of Example 2.

[0094] The sample composition of Example 2 was produced by carrying out the distillation step carried out on the sample composition of Example 1 to recover a hydrocarbon composition having an initial boiling point (IBP) of 283.5°C and a final boiling point (FBP) of 298.5°C.

[0095] The carbon number distribution of the composition of Example 2 is shown in Table 4. The composition contains 96.75% i-paraffins and 3.25% n-paraffins. 99.08 wt-% of all paraffins are in the C16-C19 range. The ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is 45.52, based on the weight of the C18 i-paraffins and the weight of the C18 n-paraffins in the composition combined.

[0096] The composition contains 0.31 wt-% C15 or lower lighter paraffins and 0.62 wt-% C20 or higher heavier paraffins.

[0097] Table 3 shows the physical and chemical properties of the composition of Example 2. As can be seen from Table 1, the conductivity of this composition is less than 1 pS / m, which indicates that the composition is suitable for various electrochemical applications. Surprisingly, the volatility (NOACK150) of the composition of Example 2 is less than that of the composition of Comparative Example 1, even though the composition of Example 2 contains lighter paraffin than the composition of Comparative Example 1.

[0098] This surprising performance is the result of the selection of the final boiling point of the distillation, which results in most of the normal paraffins of the composition C18 of Example 2 remaining in the distillation residue, as can be seen from Table 4. By selecting the final boiling point of the distillation as described above, the low temperature properties of the product are also substantially improved. The viscosity of the product also meets the requirements for such a product.

[0099] In addition, the biodegradability of the composition was tested according to OECD Test Guideline 301F, and the composition was found to be readily biodegradable.

[0100] [Table 3] TIFF2025029045000006.tif222120 TIFF2025029045000007.tif112121

[0101] [Table 4]

[0102] It will be obvious to a person skilled in the art that as technology advances, the inventive concept of the present invention can be implemented in various ways. The present invention and its embodiments are not limited to the examples described above, but may vary within the scope of the claims.

Claims

1. 1. An electrotechnical fluid composition comprising more than 90 wt-% paraffins in the range C17-C18, based on the total weight of the composition, Electrotechnical fluid composition, wherein the ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is greater than 40, based on the weight of C18 i-paraffins and the weight of C18 n-paraffins in said composition.

2. 2. An electrotechnical fluid composition according to claim 1, wherein said composition comprises less than 95 wt-% of paraffins in the C17-C18 range, based on the total weight of said composition.

3. Electrotechnical fluid composition according to claim 1 or 2, wherein the total isoparaffinic content of said composition is greater than 90 wt-%, based on the total weight of said composition.

4. 4. An electrotechnical fluid composition according to any one of claims 1 to 3, wherein the composition comprises less than 2 wt-% of C15 or lower lighter paraffins and less than 2 wt-% of C20 or higher heavier paraffins, based on the total weight of the composition.

5. Electrotechnical fluid composition according to any one of claims 1 to 4, wherein the composition has a flash point (EN ISO 2719:2016) of at least 135°C, preferably at least 140°C, more preferably at least 145°C.

6. Electrotechnical fluid composition according to any one of claims 1 to 5, wherein the composition comprises more than 37 wt-% C17 paraffin, based on the total weight of the composition.

7. Electrotechnical fluid composition according to any one of claims 1 to 6, wherein the composition comprises less than 42 wt-% C17 paraffins, based on the total weight of the composition.

8. 8. An electrotechnical fluid composition according to any one of claims 1 to 7, wherein the composition comprises more than 45 wt-%, preferably more than 48 wt-%, more preferably more than 50 wt-% C18 paraffins, based on the total weight of the composition.

9. Electrotechnical fluid composition according to any one of claims 1 to 8, wherein said composition comprises less than 57 wt-% C18 paraffins, based on the total weight of said composition.

10. Electrotechnical fluid composition according to any one of claims 1 to 9, wherein the ratio of the amount of C17 i-paraffins to the amount of C17 n-paraffins is greater than 20 and preferably less than 30, based on the weight of C17 i-paraffins and the weight of C17 n-paraffins combined in the composition.

11. Electrotechnical fluid composition according to any one of the preceding claims, wherein the composition comprises 0.01 to 1 wt-% of aromatic compounds, preferably 0.01 to 0.5 wt-% of aromatic compounds, based on the total weight of the composition.

12. Electrotechnical fluid composition according to any one of claims 1 to 11, wherein the composition comprises, based on the total weight of the composition, 3 to 4 wt-% C16 i-paraffin, 35 to 40 wt-% C17 i-paraffin, 50 to 55 wt-% C18 i-paraffin, 1 to 3 wt-% C19 i-paraffin, 0.1 to 1 wt-% C16 n-paraffin, 0.5 to 2 wt-% C17 n-paraffin, 0.5 to 2 wt-% C18 n-paraffin and 0.01 to 1 wt-% C19 n-paraffin.

13. Electrotechnical fluid composition according to any one of the preceding claims, wherein the total isoparaffinic content of said composition is less than 98 wt-%, based on the total weight of said composition.

14. Electrotechnical fluid composition according to any one of the preceding claims, in which the ratio of the amount of C18 i-paraffins to the amount of C18 n-paraffins is between 42 and 47, based on the weight of C18 i-paraffins and the weight of C18 n-paraffins combined in the composition.

15. Electrotechnical fluid composition according to any one of the preceding claims, having a conductivity (ISO 6297:1997) at 22°C of less than 1 pS / m and a NOACK150 (ASTM D5800-B) of less than or equal to 8.5 wt-%.

16. Density at 22°C (EN ISO 12185) is 782-784 kg / m 3 Electrotechnical fluid composition according to any one of the preceding claims, having a viscosity between 0.1 and 0.5 and a cloud point (ASTM D 7689:2017) of less than -32°C.

17. Electrotechnical fluid composition according to any one of the preceding claims, wherein said composition has a biogenic carbon content greater than 50 wt-%, preferably greater than 90 wt-% and most preferably greater than 99 wt-%.

18. A method for producing an electrotechnical fluid composition according to any one of claims 1 to 17, comprising the steps of: carrying out at least one hydrodeoxygenation reaction and at least one isomerization reaction of the renewable feedstock to obtain a renewable paraffinic feed; subjecting said renewable paraffinic feed to at least one separation process to recover a hydrocarbon composition having a boiling range (EN ISO 3405:2011) within the range of about 275°C to about 300°C, preferably within the range of about 280°C to about 300°C. The method includes:

19. Use of an electrotechnical fluid composition according to any one of claims 1 to 17 in an electrical device.

20. Use of an electrotechnical fluid composition according to any one of claims 1 to 17 as a battery coolant, insulating oil or cable oil.

21. Use of an electrotechnical fluid composition according to any one of claims 1 to 17 as a battery coolant in an electric vehicle.

22. Use of an electrotechnical fluid composition according to any one of claims 1 to 17 as a transformer oil or as a transformer oil component.

23. Use of an electrotechnical fluid composition according to any one of claims 1 to 17 as a coolant for a server farm.

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