CN117925303A - Marine cylinder oil composition with high antioxidant property and low base number as well as preparation method and application thereof - Google Patents
Marine cylinder oil composition with high antioxidant property and low base number as well as preparation method and application thereof Download PDFInfo
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- CN117925303A CN117925303A CN202211320926.XA CN202211320926A CN117925303A CN 117925303 A CN117925303 A CN 117925303A CN 202211320926 A CN202211320926 A CN 202211320926A CN 117925303 A CN117925303 A CN 117925303A
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- 239000000203 mixture Substances 0.000 title claims abstract description 61
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 32
- 239000010727 cylinder oil Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000011575 calcium Substances 0.000 claims abstract description 70
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 70
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 64
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 59
- 230000003647 oxidation Effects 0.000 claims abstract description 32
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 32
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 28
- 239000002199 base oil Substances 0.000 claims abstract description 27
- 239000002270 dispersing agent Substances 0.000 claims abstract description 25
- 239000003599 detergent Substances 0.000 claims abstract description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 claims abstract description 5
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 43
- 229960002317 succinimide Drugs 0.000 claims description 26
- -1 aminothio ester Chemical class 0.000 claims description 25
- 239000003208 petroleum Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 8
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 6
- 150000003751 zinc Chemical class 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 claims description 2
- BTFJQTMCCJDBLU-UHFFFAOYSA-N [P].[S].[Zn] Chemical class [P].[S].[Zn] BTFJQTMCCJDBLU-UHFFFAOYSA-N 0.000 claims description 2
- 150000004657 carbamic acid derivatives Chemical class 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- COTPAMORPWZHKE-UHFFFAOYSA-H trizinc;thiophosphate;thiophosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=O.[O-]P([O-])([O-])=S COTPAMORPWZHKE-UHFFFAOYSA-H 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 abstract description 11
- 239000011593 sulfur Substances 0.000 abstract description 11
- 239000000295 fuel oil Substances 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 100
- 238000012360 testing method Methods 0.000 description 22
- DMBHHRLKUKUOEG-UHFFFAOYSA-N N-phenyl aniline Natural products C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 11
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 11
- 229920002367 Polyisobutene Polymers 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- YWYGMDLPNUKQOF-UHFFFAOYSA-N C(CCCCCCC)[Zn]CCCCCCCC.[P].[S] Chemical compound C(CCCCCCC)[Zn]CCCCCCCC.[P].[S] YWYGMDLPNUKQOF-UHFFFAOYSA-N 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- GNVMUORYQLCPJZ-UHFFFAOYSA-M Thiocarbamate Chemical compound NC([S-])=O GNVMUORYQLCPJZ-UHFFFAOYSA-M 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical compound OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 235000005205 Pinus Nutrition 0.000 description 2
- 241000218602 Pinus <genus> Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010763 heavy fuel oil Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- JUCGLXJRZMNKAH-UHFFFAOYSA-N CCCCCCCC[Zn]CCCCCCCC Chemical class CCCCCCCC[Zn]CCCCCCCC JUCGLXJRZMNKAH-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
The invention relates to the technical field of lubricating oil, and provides a marine cylinder oil composition with high oxidation resistance and low base number, and a preparation method and application thereof. The marine cylinder oil composition with high oxidation resistance and low base number comprises 10-25 parts by weight of detergent, 0.5-10 parts by weight of dispersant, 0.5-5 parts by weight of antioxidant and 70-85 parts by weight of base oil; the composition has a base number of 30-50 mgKOH/g; the composition has a calcium content of not less than 16000ppm; the detergent comprises sulfonate and sulfurized alkylphenol salt, wherein the weight ratio of the sulfonate to the sulfurized alkylphenol salt is 5.5-10: 1. the marine cylinder oil composition with high oxidation resistance and low base number provided by the invention has excellent high-temperature oxidation stability, and is suitable for lubricating the cylinder part of a marine low-speed two-stroke crosshead diesel engine using fuel oil with sulfur content lower than 0.5%.
Description
Technical Field
The invention relates to the technical field of lubricating oil, in particular to a marine cylinder oil composition with high oxidation resistance and low base number, and a preparation method and application thereof.
Background
With the increasing severity of environmental situation, the IMO International maritime organization regulates the upper limit of the sulfur content of the fuel, and 0.5% of the international sulfur limit is fully effective from 1 month 1 day 2020, and other ships need to use the fuel with the sulfur content below 0.5% except the fuel with the upper limit of 0.1% in the ECA emission control area and the ships provided with the desulfurization equipment are not limited. International OEMs recommend 40BN cylinder oil for ships using fuel with sulfur content below 0.5%.
Meanwhile, with the continuous development of engine technology, the working pressure and the temperature of the low-speed cross-head two-stroke engine are continuously improved with the aim of improving the combustion efficiency, and the temperatures of the upper areas of the piston and the cylinder sleeve close to the combustion chamber reach 250 ℃ or even more than 300 ℃. The cylinder oil is injected to each piston through oil injection holes distributed around the cylinder liner to lubricate, and forms a stable oil film between the cylinder liner and the piston (piston ring) so as to sufficiently lubricate the cylinder wall to prevent scraping, while maintaining high-temperature oxidation stability to reduce the formation of deposits of lubricating oil on the hot surfaces of the piston and the piston ring.
Chinese patent CN112239697CN discloses a high base number marine cylinder oil composition, which comprises the following components in parts by weight: a) 10-25 parts of a detergent; b) 0.5-10 parts of dispersing agent; c) 0-5 parts of an antioxidant; d) 60-85 parts of base oil; the calcium content of the composition is not less than 20000ppm, the base number is not less than 60KOH/g and not more than 80KOH/g; can be used for lubricating cylinder parts of marine low-speed two-stroke diesel engines using fuels with sulfur content higher than 0.5%. However, the composition cannot meet the technical requirements of lubrication of marine low-speed two-stroke diesel engines using fuels with sulfur content lower than 0.5%, and the high-temperature oxidation stability is not ideal. In addition, the existing low-base-number marine cylinder oil also has the common problem that the high-temperature oxidation stability is not ideal enough.
Disclosure of Invention
The invention aims to provide a marine cylinder oil composition with high oxidation resistance and low base number, and a preparation method and application thereof, so as to solve the technical problem that the high-temperature oxidation stability of the marine cylinder oil with low base number is not ideal in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
In a first aspect, the invention provides a marine cylinder oil composition with high oxidation resistance and low base number, which comprises the following components in parts by weight:
10-25 parts of a detergent;
0.5-10 parts of dispersing agent;
0.5-5 parts of antioxidant;
70-85 parts of base oil;
the composition has a base number of 30-50 mgKOH/g;
The composition has a calcium content of not less than 16000ppm;
The detergent comprises sulfonate and sulfurized alkylphenol salt, wherein the weight ratio of the sulfonate to the sulfurized alkylphenol salt is 5.5-10: 1.
In the invention, the combination of the detergent selected sulfonate and the sulfurized alkylphenol salt can provide better detergent dispersibility and high-temperature oxidation stability. Meanwhile, the dosage ratio of the sulfonate to the sulfurized alkylphenol salt needs to be controlled within a certain range, and the weight ratio of the sulfonate to the sulfurized alkylphenol salt is 5.5-10: the high-temperature oxidation stability of the composition can be improved within the range of 1, the clean dispersibility of the composition can be kept at a good level, and the weight ratio of sulfonate to sulfurized alkylphenol salt is too low or too high, so that the performance of the composition is reduced.
According to some embodiments of the invention, the sulfonate is selected from at least one of petroleum calcium sulfonate, synthetic calcium sulfonate.
According to some embodiments of the invention, the calcium petroleum sulfonate is selected from at least one of low base number calcium petroleum sulfonate, medium base number calcium petroleum sulfonate, high base number calcium petroleum sulfonate, ultra high base number calcium petroleum sulfonate; and/or the synthetic calcium sulfonate is selected from at least one of low-base number synthetic calcium sulfonate, medium-base number synthetic calcium sulfonate, high-base number synthetic calcium sulfonate and ultrahigh-base number synthetic calcium sulfonate.
According to some embodiments of the invention, the sulfurized alkylphenolate includes at least one of a high base number sulfurized alkylphenolate calcium and a medium base number sulfurized alkylphenolate calcium.
According to some embodiments of the invention, the dispersant is selected from at least one of a polymeric ashless dispersant, a succinimide dispersant, a boronated ashless dispersant.
According to some preferred embodiments of the present invention, the dispersant is selected from at least one of polymeric polyisobutylene succinimide, bis-alkenyl succinimide, mono-alkenyl succinimide, high nitrogen bis-alkenyl succinimide, and boronated succinimide.
According to some embodiments of the invention, the antioxidant is selected from at least one of amine-type antioxidants, zinc sulphur-phosphorus salts, carbamates.
According to some embodiments of the invention, the antioxidant comprises at least one of a zinc salt of the sulphur-phosphorus type, a carbamate and an amine-type antioxidant.
According to some preferred embodiments of the present invention, the weight ratio of the amine antioxidant to at least one of the zinc salt of the thiophosphoric type and the carbamate is (0.2-4): 1; for example, it may be 0.2:1, 0.25:1, 0.3:1, 0.33:1, 0.35:1, 0.4:1, 0.45:1, 0.6:1, 0.8:1, 1:1, 2:1, 3:1, 4:1, etc.
According to some preferred embodiments of the invention, the amine-type antioxidant comprises octyl/butyl diphenylamine
According to some preferred embodiments of the present invention, the zinc salt of thiophosphoric acid comprises at least one of zinc dioctyl salt of thiophosphoric acid, zinc butyl octyl salt of thiophosphoric acid, zinc salt of di-sec-alkyl dithiophosphoric acid.
According to some embodiments of the invention, the base oil is selected from at least one of an hvii base oil or an hvii base oil.
According to some embodiments of the invention, the composition comprises the following components in parts by weight:
12-22 parts of a detergent;
0.5-5 parts of dispersing agent;
1-5 parts of an antioxidant;
72-85 parts of base oil.
According to some embodiments of the invention, the composition comprises 1 to 4 parts by weight of an antioxidant.
According to some embodiments of the invention, the composition further comprises 0 to 5 parts by weight of an antiwear agent;
According to some embodiments of the invention, the antiwear agent is selected from at least one of zinc salts of thiophosphoric type, aminothioesters.
According to some preferred embodiments of the invention, the antiwear agent comprises a thiocarbamate.
According to some embodiments of the invention, the composition comprises 0 to 1 parts by weight of an antiwear agent.
In a second aspect, the present invention provides a method for preparing the composition of the first aspect, comprising: adding other components except the base oil into the base oil at 50-60 ℃, and stirring until the components are completely dissolved to obtain the marine cylinder oil composition with high antioxidant property and low base number.
In a third aspect, the present invention provides the use of a composition according to the first aspect or a composition according to the second aspect for lubricating the cylinder sites of a marine low-sulfur fuel oil fuelled with a sulfur content of less than 0.5%.
The fuel having a sulfur content of less than 0.5% is a marine residual fuel, and meets the specifications of the marine residual fuel specified in ISO 8217.
The invention has the advantages that:
the marine cylinder oil composition with high oxidation resistance and low base number provided by the invention has excellent high-temperature oxidation stability, and is suitable for lubricating the cylinder part of a marine low-speed two-stroke crosshead diesel engine using fuel oil with sulfur content lower than 0.5%.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present invention in any way.
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. The reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the raw materials, instruments, equipment, etc. used in the following examples are all commercially available or available by existing methods; the reagent dosage is the reagent dosage in the conventional experimental operation if no special description exists; the experimental methods are conventional methods unless otherwise specified.
Example 1
The marine cylinder oil composition with high oxidation resistance and low base number is prepared from the following components in parts by weight:
(1) A detergent: ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g), 7 parts of high base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 1 part of high base number sulfurized alkylphenol calcium S206 (base number 280 mgKOH/g), 1.4 parts of medium base number sulfurized alkylphenol calcium T121 (base number 160 mgKOH/g), 1.5 parts of low base number petroleum calcium sulfonate T101 (base number 25 mgKOH/g), 8 parts
(2) Dispersing agent: polymer polyisobutylene succinimide T161,2 parts
Monoalkenyl succinimide T151,2 parts
(3) An antioxidant: 0.2 part of dioctyl zinc sulfur-phosphorus salt T203
0.6 Part of thiophosphoryl butyl octyl zinc salt T202
Octyl/butyl diphenylamine T557,1 part
(4) Base oil: ib 500, 43.3 parts
120BS,32 parts
The preparation method comprises the following steps: adding the components into base oil at 50-60 ℃, stirring for 1-4 h until the components are completely dissolved, and obtaining the marine cylinder oil composition with high antioxidant property and low base number.
Example 2
The marine cylinder oil composition with high oxidation resistance and low base number is prepared from the following components in parts by weight:
(1) A detergent: 6 parts of ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g)
High base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 3 parts
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 1 part
Medium-base number sulfurized calcium alkyl phenol T121 (base number 160 mgKOH/g), 1 part
Low base number synthetic calcium sulfonate T104 (base number 25 mgKOH/g), 10 parts
(2) Dispersing agent: bis alkenyl succinimide T154,1 part
(3) An antioxidant: octyl/butyl diphenylamine T557,0.2 part
Carbamate T531,0.8 part
(4) Base oil: ib 500, 43.5 parts
120BS,32.5 parts
(5) Antiwear agent: thiocarbamate T323,1 part
The preparation method is the same as in example 1.
Example 3
The marine cylinder oil composition with high oxidation resistance and low base number is prepared from the following components in parts by weight:
(1) A detergent: 3.8 portions of ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g)
High base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 5 portions
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 1.5 portions
6 Parts of low-base number synthetic calcium sulfonate T104 (base number 25 mgKOH/g)
(2) Dispersing agent: polymer polyisobutylene succinimide T161,1 part
Bis alkenyl succinimide T154,1 part
(3) An antioxidant: zinc di-secondary alkyl dithiophosphate T205,1 part
Octyl/butyl diphenylamine T557,3 parts
(4) Base oil: ib 500, 44 parts
120BS,33.7 parts
The preparation method is the same as in example 1.
Example 4
The marine cylinder oil composition with high oxidation resistance and low base number is prepared from the following components in parts by weight:
(1) A detergent: high base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 9 portions
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 3.2 portions
280,9 Parts of low base number calcium petroleum sulfonate T101 (base number 280 mgKOH/g)
(2) Dispersing agent: polymer polyisobutylene succinimide T161,0.7 parts
Bis alkenyl succinimide T154,0.2 part
(3) An antioxidant: 1 part of thiophosphoryl butyl octyl zinc salt T202
1 Part of dioctyl zinc sulfur-phosphorus salt T203
Octyl/butyl diphenylamine T557,1 part
(4) Base oil: ib 500, 40.3 parts
120BS,34.2 portions
(5) Antiwear agent: thiocarbamate T323,0.4 part
The preparation method is the same as in example 1.
Example 5
The marine cylinder oil composition with high oxidation resistance and low base number is prepared from the following components in parts by weight:
(1) A detergent: 3 parts of ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g)
High base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 6 portions
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 2 portions
Low base number synthetic calcium sulfonate T104 (base number 25 mgKOH/g), 7 parts
(2) Dispersing agent: high nitrogen bis alkenyl succinimide T146,1 part
Polymer polyisobutylene succinimide T161,0.4 parts
(3) An antioxidant: 0.8 part of thiophosphoryl butyl octyl zinc salt T202
2 Parts of octyl/butyl diphenylamine T557
(4) Base oil: ib 500, 44.7 parts
120BS,33.1 parts
The preparation method is the same as in example 1.
Comparative example 1
The marine cylinder oil composition is prepared from the following components in parts by weight:
(1) A detergent: ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g), 9.4 parts
Low base number synthetic calcium sulfonate T104 (base number 25 mgKOH/g), 5 parts
(2) Dispersing agent: polymer polyisobutylene succinimide T161,2 parts
Monoalkenyl succinimide T151,2 parts
(3) An antioxidant: 0.2 part of dioctyl zinc sulfur-phosphorus salt T203
0.6 Part of thiophosphoryl butyl octyl zinc salt T202
Octyl/butyl diphenylamine T557,1 part
(4) Base oil: ib 500, 33.8 portions
120BS,46 parts
The preparation method is the same as in example 1.
Comparative example 2
The marine cylinder oil composition is prepared from the following components in parts by weight:
(1) A detergent: ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g), 4 parts
6 Parts of high-base number vulcanized calcium alkylphenol S206 (base number 280 mgKOH/g)
High base number calcium alkyl salicylate T109C (base number 320 mgKOH/g), 12 parts
(2) Dispersing agent: polymer polyisobutylene succinimide T161,0.1 part
Bis alkenyl succinimide T154,0.5 part
0.5 Part of boronated polyisobutylene succinimide T154B
(3) An antioxidant: 0.1 portion of dioctyl zinc salt T203
Octyl/butyl diphenylamine T557,0.7 part
Carbamate T531,0.2 parts
(4) Base oil: ib 500, 45.4 parts
120BS,30.5 parts
The preparation method is the same as in example 1.
Comparative example 3
The marine cylinder oil composition is prepared from the following components in parts by weight:
(1) A detergent: 6 parts of high-base number vulcanized calcium alkylphenol S206 (base number 280 mgKOH/g)
Middle alkali number sulfurized calcium alkyl phenol T121 (alkali number 160 mgKOH/g), 4 portions
Low base number calcium petroleum sulfonate T101 (base number 25 mgKOH/g), 3 parts
High base number calcium alkyl salicylate T109C (base number 320 mgKOH/g), 5 parts
(2) Dispersing agent: polymer polyisobutylene succinimide T161,2 parts
Monoalkenyl succinimide T151,2 parts
(3) An antioxidant: 0.2 part of dioctyl zinc sulfur-phosphorus salt T203
0.6 Part of thiophosphoryl butyl octyl zinc salt T202
Octyl/butyl diphenylamine T557,1 part
(4) Base oil: ib 500, 46.2 parts
120BS,30 parts
The preparation method is the same as in example 1.
Comparative example 4
The marine cylinder oil composition is prepared from the following components in parts by weight:
(1) A detergent: 6.5 portions of ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g)
High base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 3 parts
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 1 part
Medium-alkali number vulcanized calcium alkylphenol T121 (alkali number 160 mgKOH/g), 0.6 part
(2) Dispersing agent: bis alkenyl succinimide T154,1 part
(3) An antioxidant: octyl/butyl diphenylamine T557,0.2 part
Carbamate T531,0.8 part
(4) Base oil: ib 500, 48.4 parts
120BS,37.5 parts
(5) Antiwear agent: thiocarbamate T323,1 part
The preparation method is the same as in example 1.
Comparative example 5
The marine cylinder oil composition is prepared from the following components in parts by weight:
(1) A detergent: ultra-high base number synthetic calcium sulfonate T106 (base number 410 mgKOH/g), 7 parts
High base number synthetic calcium sulfonate T106B (base number 316 mgKOH/g), 1.3 portions
High base number sulfurized calcium alkyl phenate S206 (base number 280 mgKOH/g), 1.4 portions
1.5 Portions of medium-alkali vulcanized calcium alkylphenol T121 (alkali value 160 mgKOH/g)
Low base number calcium petroleum sulfonate T101 (base number 25 mgKOH/g), 4 parts
(2) Dispersing agent: polymer polyisobutylene succinimide T161,2 parts
Monoalkenyl succinimide T151,2 parts
(3) An antioxidant: 0.2 part of dioctyl zinc sulfur-phosphorus salt T203
0.6 Part of thiophosphoryl butyl octyl zinc salt T202
Octyl/butyl diphenylamine T557,1 part
(4) Base oil: ib 500, 45 parts
120BS,34 parts
The preparation method is the same as in example 1.
TABLE 1
The marine cylinder oil compositions of each example and each comparative example were subjected to an oxidation induction period test and a pinus heat pipe test, and the test results are shown in table 2.
(1) Oxidative induction period test (SH/T0719)
The compositions of examples and comparative examples were used as test samples, and the thermal oxidative stability of the samples was evaluated by a pressure differential scanning calorimeter test (PDSC) at 200℃and 3.5MPa. The PDSC test is used for examining the oxidation resistance of the oil under the conditions of high temperature, high pressure and oxygen introduction, and the oxidation resistance is represented by the oxidation induction period of a test sample, and the longer the oxidation induction period is, the better the oxidation resistance is.
(2) Test of pinus heat pipe
The high-temperature detergency and high-temperature oxidation stability of the oil product are inspected, the test oil is pumped into a glass test tube at a high temperature at a fixed speed during testing, and flows upwards along with the air, new oil is pumped into the test tube continuously in the testing process, old oil is pumped out, after the testing is finished, the cleaning grade (0-10 grade) of the paint on the inner wall of the test tube is compared to evaluate the high-temperature detergency and high-temperature oxidation stability of the test oil product, and the higher the rating of the test result, the less sediment is in the test tube, and the better the detergency and high-temperature oxidation stability of the oil product are. The test temperature was 310℃and the test time was 16h.
Table 2 results of tests on antioxidant properties and detergency of oils
From the results, the marine cylinder oil composition with high oxidation resistance and low base number provided by the invention has the advantages that when the base number of the composition is 30-50 mgKOH/g, the calcium content of the composition is controlled to be not less than 16000ppm, and the weight ratio is 5.5-10: 1 and sulfurized alkylphenate as a detergent, resulting in a composition having excellent high temperature oxidation resistance and detergency.
It should be noted that the above-described embodiments are only for explaining the present invention and do not constitute any limitation of the present invention. The invention has been described with reference to exemplary embodiments, but it is understood that the words which have been used are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined in the appended claims, and the invention may be modified without departing from the scope and spirit of the invention. Although the invention is described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, as the invention extends to all other means and applications which perform the same function.
Claims (10)
1. The marine cylinder oil composition with high oxidation resistance and low base number is characterized by comprising the following components in parts by weight:
10-25 parts of a detergent;
0.5-10 parts of dispersing agent;
0.5-5 parts of antioxidant;
70-85 parts of base oil;
the composition has a base number of 30-50 mgKOH/g;
The composition has a calcium content of not less than 16000ppm;
The detergent comprises sulfonate and sulfurized alkylphenol salt, wherein the weight ratio of the sulfonate to the sulfurized alkylphenol salt is 5.5-10: 1.
2. The composition according to claim 1, wherein the sulfonate is at least one selected from the group consisting of calcium petroleum sulfonate and synthetic calcium sulfonate;
Preferably, the petroleum calcium sulfonate is at least one selected from low-base number petroleum calcium sulfonate, medium-base number petroleum calcium sulfonate, high-base number petroleum calcium sulfonate and ultrahigh-base number petroleum calcium sulfonate; and/or the synthetic calcium sulfonate is selected from at least one of low-base number synthetic calcium sulfonate, medium-base number synthetic calcium sulfonate, high-base number synthetic calcium sulfonate and ultrahigh-base number synthetic calcium sulfonate.
3. The composition according to claim 1 or 2, wherein the dispersant is at least one selected from the group consisting of polymeric ashless dispersants, succinimide dispersants, boronated ashless dispersants.
4. A composition according to any one of claims 1 to 3, characterized in that the antioxidant is selected from at least one of amine antioxidants, sulphur-phosphorus zinc salts, carbamates;
preferably, the antioxidant comprises at least one of a zinc salt of the sulphur-phosphorus type, a carbamate and an amine type antioxidant.
5. The composition of any one of claims 1-4, wherein the base oil is selected from at least one of an hvii base oil or an hvii base oil.
6. The composition according to any one of claims 1 to 5, wherein the composition comprises the following components in parts by weight:
12-22 parts of a detergent;
0.5-5 parts of dispersing agent;
1-5 parts of an antioxidant;
72-85 parts of base oil.
7. The composition of claim 6, wherein the composition comprises 1 to 4 parts by weight of the antioxidant.
8. The composition of any one of claims 1-7, further comprising 0 to 5 parts by weight of an antiwear agent;
preferably, the antiwear agent is selected from at least one of zinc thiophosphate and aminothio ester; and/or the composition comprises 0 to 1 part by weight of an antiwear agent.
9. A process for preparing a composition according to any one of claims 1 to 8, comprising: adding other components except the base oil into the base oil at 50-60 ℃, and stirring until the components are completely dissolved to obtain the marine cylinder oil composition with high antioxidant property and low base number.
10. Use of a composition according to any one of claims 1 to 8 or a composition prepared by a method according to claim 9 for lubricating cylinder sites of a marine low-speed two-stroke diesel engine fuelled with a low-sulphur fuel having a sulphur content of less than 0.5%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320926.XA CN117925303A (en) | 2022-10-26 | 2022-10-26 | Marine cylinder oil composition with high antioxidant property and low base number as well as preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320926.XA CN117925303A (en) | 2022-10-26 | 2022-10-26 | Marine cylinder oil composition with high antioxidant property and low base number as well as preparation method and application thereof |
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| CN117925303A true CN117925303A (en) | 2024-04-26 |
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| CN202211320926.XA Pending CN117925303A (en) | 2022-10-26 | 2022-10-26 | Marine cylinder oil composition with high antioxidant property and low base number as well as preparation method and application thereof |
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| CN (1) | CN117925303A (en) |
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- 2022-10-26 CN CN202211320926.XA patent/CN117925303A/en active Pending
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