CN104130840A

CN104130840A - Diesel-machine oil composition with coal-derived diesel SRC-2 as fuel

Info

Publication number: CN104130840A
Application number: CN201410333148.7A
Authority: CN
Inventors: 黄福川; 覃克; 陈彪; 李康春; 邓富康; 黄伊琳; 马骁飞; 刘宇恒; 黄旖瑶
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2014-07-14
Filing date: 2014-07-14
Publication date: 2014-11-05

Abstract

The invention discloses a diesel-machine oil composition with coal-derived diesel SRC-2 as a fuel. According to the invention, type II base oil and polyinternalolefin are adopted as base oils, and various composite additives are used in auxiliary. The additives comprise: an anti-wear agent, an antioxidant preservative, an anti-foam agent, a viscosity index improving agent, a metal deactivation agent, a reinforcing agent, a detergent, a dispersant, an anti-rust agent, an antioxidant, and an oilness agent. The engine oil composition provided by the invention has excellent detergent and dispersing effects. With the oil composition, piston ring deposits can be prevented. The oil composition has excellent viscosity-temperature characteristics and excellent base value retention performance. With the oil composition, viscosity increase and machine oil consumption can be effectively controlled, and black oil sludge generation can be inhibited, such that the engine can be more clean. The oil composition has good high-temperature oxidation resistant stability, high shearing stability, and rubber compatibility. The oil composition has good low-temperature starting performance, and excellent fuel oil economy. The oil composition causes no corrosion and rust to moving parts. With the oil composition, an oil product can maintain enough oil film strength, and wear can be reduced.

Description

The diesel engine oil composition that a kind of coal derived oil SRC-2 is fuel

Technical field

The invention belongs to internal combustion engine lubricant field, the diesel engine oil composition that particularly a kind of coal derived oil SRC-2 is fuel.

Background technology

1969, United States Gulf oil company, under USDOE is supported, started to develop coal liquefaction (CTL).They define coal derived oil SRC-2 (Solvent Refine Coal).SRC-1 is solid fuel, and SRC-2 is liquid fuel.The tellurian coal amount of containing is much larger than prospective oil, and the distribution of coal is extensive far beyond oil, and when oil supply is nervous, coal derived oil can replace existing oil fuel and become the fuel substitute of middle low speed large-scale diesel engine.Coal liquefaction fuel can be divided into direct liquefaction and indirect liquefaction two classes according to adopted liquifying method.Indirect liquefaction fuel and hydrorefined direct liquefaction fuel have the quality roughly the same with oil fuel processed.They can equally with oil fuel processed apply in diesel engine.And the feature of SRC-2: density is at 0.97～0.98kg/L, and viscosity and marine diesel oil are suitable, and flash-point and ordinary diesel oil are close, is its Conradson carbon residue and heavy oil, residual oil higher than not, low heat value?～39.8MJ/kg; Point of ignition high (more than 502 ℃); Cetane value is very low, only has 25 left and right; The difficulty of catching fire; Sulphur content is not high, corrode less, all high compared with ordinary diesel oil containing oxygen and nitrogen, use the diesel emission NO of SRC-2 _xhigher.In addition, it is more containing aromatic hydrocarbons, and alkane and naphthenic hydrocarbon are less, in diesel engine, use and have certain difficulty separately, conventionally mix and in diesel oil, make part fuel substitute, its another feature is exactly more containing various metals, impurity, can aggravate the abrasion and corrosion of engine moving parts; Meanwhile, Conradson carbon residue, ash content, moisture, bituminous matter and actual gum content are also higher.To this, be necessary to develop the diesel engine oil composition that a kind of coal derived oil SRC-2 dealing with problems for These characteristics is fuel.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of good peace and quiet dispersion effect that has, and prevents piston ring settling; Good glue-temperature characteristics, excellent base number retentivity, effectively control viscosity and increase and oil consumption, can suppress the generation of black greasy filth, makes engine more clean; Good resistance to high temperature oxidation stability, high shear stability, rubber compatibility, the fuel economy that cold cranking capacity is good, excellent, corrosion-free and the corrosion to moving parts, guarantees that oil product keeps enough oil film strengths, the diesel engine oil composition that the coal derived oil SRC-2 that reduces wearing and tearing is fuel.

For above-mentioned technical problem, the present invention adopts following technical scheme:

Coal derived oil SRC-2 is a diesel engine oil composition for fuel, adopts II class base oil and poly-internal olefin as base oil, coordinates multiple composite additive, and the mass percent of its each component is:

Component	Mass percent content
		Base oil	Surplus
Purification agent	12.0％～13.0％
		Dispersion agent	6.0％～8.0％
Antioxidant preservative	1.5％～2.0％
		Oxidation inhibitor	0.8％～1.5％
Oiliness improver	0.8％～1.0％
		Metal passivator	0.5％～1.0％
Strengthening agent	0.5％～0.8％
		Rust-preventive agent	1.5％～2.0％
Kilfoam	0.005％～0.01％
		Viscosity index improver	3.0％～5.0％
Anti-wear agent	2.0％～3.0％

The mass percent summation of each component is 100% above.

Base oil is that II class base oil and 50%～60% the poly-internal olefin of mass ratio 50%～40% is compound.

Purification agent is that low alkali value calcium alkylbenzenesulfonate, 25%～30% high base number calcium alkylbenzenesulfonate and 50%～40% the alkyl sodium salicylate of mass ratio 25%～30% is compound, and the mass percent summation of three components is 100%;

Dispersion agent is that polyisobutylene-bis-succinimide and 60%～50% the boronation polyisobutylene-bis-succinimide of mass ratio 40%～50% is compound.

Antioxidant preservative is that the molybdenum dithiocarbamate of the two octyl group basic zinc salt of the sulphur phosphorus of mass ratio 40%～50% and 60%～50% is compound;

Oxidation inhibitor be mass ratio 40%～50% alkyl diphenylamine and 60%～50% 2,6-di-t-butyl mixed ester is compound.

Oiliness improver is 124 Triazole fatty amine salt.

Metal passivator is that 124 Triazole derivative and 60%～50% the methyl formyl triazole derivative of mass ratio 40%～50% is compound.

Strengthening agent is 3,7-diisooctyl thiodiphenylamine.

Rust-preventive agent is that dodecenylsuccinic acid and 60%～50% the benzotriazole of mass ratio 40%～50% is compound.

Kilfoam is that dimethyl silicone oil and 60%～50% acrylate and the ether copolymer of mass ratio 40%～50% is compound.

Viscosity index improver is polymethacrylate;

Anti-wear agent is boronation phosphoric acid ester.

Remarkable advantage of the present invention has: have good peace and quiet dispersion effect, prevent piston ring settling; Good glue-temperature characteristics, excellent base number retentivity, effectively control viscosity and increase and oil consumption, can suppress the generation of black greasy filth, makes engine more clean; Good resistance to high temperature oxidation stability, high shear stability, rubber compatibility, the fuel economy that cold cranking capacity is good, excellent, the corrosion-free and corrosion to moving parts, guarantees that oil product keeps enough oil film strengths, reduces wearing and tearing.

Embodiment

Embodiment 1:

Each component of following mass percent is in harmonious proportion and is formed:

Embodiment 2:

Embodiment 3:

The main physical and chemical index of embodiment 1 product:

Claims

1. the diesel engine oil composition that coal derived oil SRC-2 is fuel, is characterized in that: adopt II class base oil and poly-internal olefin as base oil, coordinate multiple composite additive, the mass percent of its each component is:

The mass percent summation of each component is 100% above.

2. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, base oil is that II class base oil and 50%～60% the poly-internal olefin of mass ratio 50%～40% is compound.

3. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, it is characterized in that, purification agent is that low alkali value calcium alkylbenzenesulfonate, 25%～30% high base number calcium alkylbenzenesulfonate and 50%～40% the alkyl sodium salicylate of mass ratio 25%～30% is compound, and the mass percent summation of three components is 100%; Dispersion agent is that polyisobutylene-bis-succinimide and 60%～50% the boronation polyisobutylene-bis-succinimide of mass ratio 40%～50% is compound.

4. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, antioxidant preservative is that the molybdenum dithiocarbamate of the two octyl group basic zinc salt of the sulphur phosphorus of mass ratio 40%～50% and 60%～50% is compound; Oxidation inhibitor be mass ratio 40%～50% alkyl diphenylamine and 60%～50% 2,6-di-t-butyl mixed ester is compound.

5. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, oiliness improver is 124 Triazole fatty amine salt.

6. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, metal passivator is that 124 Triazole derivative and 60%～50% the methyl formyl triazole derivative of mass ratio 40%～50% is compound.

7. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, strengthening agent is 3,7-diisooctyl thiodiphenylamine.

8. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, rust-preventive agent is that dodecenylsuccinic acid and 60%～50% the benzotriazole of mass ratio 40%～50% is compound.

9. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, kilfoam is that dimethyl silicone oil and 60%～50% acrylate and the ether copolymer of mass ratio 40%～50% is compound.

10. the diesel engine oil composition that a kind of coal derived oil SRC-2 as claimed in claim 1 is fuel, is characterized in that, viscosity index improver is polymethacrylate; Anti-wear agent is boronation phosphoric acid ester.