Turbine oil complexing agent, turbine oil and preparation method and application of turbine oil

Abstract

The invention provides a steam turbine oil complexing agent, steam turbine oil as well as a preparation method and application of the steam turbine oil. The steam turbine oil complexing agent is prepared from the following components in parts by mass: 60-80 parts of an antioxidant, 5-15 parts of a metal deactivator, 5-10 parts of an antirust agent, 0.5-5 parts of a demulsifier and 5-30 parts of a cosolvent, wherein the total mass part of the complexing agent is 100 parts. The steam turbine oil contains the steam turbine oil complexing agent which can well balance the acid value, rust resistance, emulsification resistance and oxidation resistance of an oil product, an L-TSA steam turbine oil (grade A) product meeting GB 11120-2011 Turbine Oil can be obtained by adding the complexing agent into proper base oil and supplementing with a proper amount of anti-foaming agent, and the steam turbine oil has the advantages of being long in oxidation life, low in cost and the like. The antirust performance, the anti-emulsification performance and the like are excellent.

Description

Technical Field

[0001] The invention belongs to the technical field of lubricating oils, and in particular relates to a turbine oil compound, a turbine oil, and a preparation method and application thereof. Background Art

[0002] Steam turbine is a kind of rotary power machine that converts the thermal energy of steam into mechanical energy. It is generally used as a prime mover for power generation, and can also be directly used to drive various compressors, fans, pumps and ship propellers. Steam turbine oil is also called turbine oil. It is mainly used for equipment such as steam turbines and gas turbines. The lubrication system of the steam turbine plays a vital role in its normal and safe operation. With the advancement of power generation technology, more and more power plants have begun to use gas-steam combined cycle and gas turbine power generation technology with large capacity, high efficiency and high power. These units have put forward higher requirements on the antioxidant performance, rust resistance and demulsification performance of steam turbine oil. The steam turbine oil compound agent involved in the present invention is added to a suitable base oil and supplemented with an appropriate amount of anti-foaming agent to obtain a steam turbine oil with long oxidation life, excellent rust resistance and demulsification performance. Summary of the invention

[0003] In order to solve the above problems in the prior art, the present invention proposes a turbine oil compound, a turbine oil and a preparation method and application thereof.

[0004] In the first aspect, the present invention proposes a turbine oil composite, which is composed of the following components based on the total mass parts of the composite as 100 parts: 60-80 parts of antioxidant, 5-15 parts of metal deactivator, 5-10 parts of rust inhibitor, 0.5-5 parts of demulsifier, and 5-30 parts of solvent.

[0005] As a specific embodiment of the present invention, the antioxidant includes a first antioxidant, a second antioxidant and a third antioxidant, and the mass ratio of the first antioxidant, the second antioxidant and the third antioxidant is (0-50): (0-30): (0-30); preferably, the mass ratio is (20-50): (10-25): (10-25).

[0006] As a specific embodiment of the present invention, the first antioxidant is a phenolic antioxidant, more preferably, the phenolic antioxidants include T512 and Irganox L135; the second antioxidant is a diphenylamine antioxidant, more preferably, the diphenylamine antioxidants include T534 and Irganox L57; the third antioxidant is an α-naphthylamine antioxidant, more preferably, the α-naphthylamine antioxidants include T531 and Irganox L06.

[0007] As a specific embodiment of the present invention, the metal deactivator is selected from at least one of benzotriazole derivatives or thiadiazole derivatives. Preferably, the benzotriazole derivatives include T552 and Irgamet 39, and the thiadiazole derivatives include T561.

[0008] As a specific embodiment of the present invention, the rust remover is selected from at least one of alkenyl succinic acid type rust inhibitor T746, succinate derivative Maxwell 4800, and amino acid derivative K1031.

[0009] As a specific embodiment of the present invention, the demulsifier is selected from at least one of ethylene oxide propylene oxide block polyether demulsifiers or polyoxyethylene polyoxypropylene ether demulsifiers, wherein the ethylene oxide propylene oxide block polyether demulsifiers include DL32 and PE 6100, and the polyoxyethylene polyoxypropylene ether demulsifiers include L61.

[0010] As a specific embodiment of the present invention, the cosolvent is at least one of polyether or polyol ester, the polyether includes OSP 32, and the polyol ester includes trimethylolpropane ester and Synative ES TMTC.

[0011] The above raw materials in the present invention can be prepared in-house or commercially available, and the present invention is not particularly limited thereto.

[0012] In a second aspect, the present invention provides a turbine oil, the components of which include a base oil, the turbine oil compound described in the first aspect, and optionally an anti-foaming agent.

[0013] As a specific embodiment of the present invention, the base oil includes API Class I, Class II and Class III oils, and the kinematic viscosity at 40°C is between 15 and 95 mm 2 / s.

[0014] As a specific embodiment of the present invention, the base oil accounts for 97-99.5wt% of the total turbine oil; the turbine oil compound accounts for 0.5-3wt% of the total turbine oil; and the antifoaming agent accounts for 0.005-0.05wt% of the total turbine oil.

[0015] As a specific embodiment of the present invention, the antifoaming agent includes a silicon-type antifoaming agent or a non-silicon-type antifoaming agent.

[0016] In a third aspect, the present invention provides a method for preparing the turbine oil according to the second aspect, comprising: uniformly mixing a base oil, the turbine oil compound according to the first aspect, and an optional antifoaming agent.

[0017] As a specific embodiment of the present invention, the preparation method preferably comprises the following steps:

[0018] S1: Adding cosolvent, metal deactivator, rust inhibitor, demulsifier and antioxidant in sequence, wherein each single dose is stirred for 5-10 minutes after addition and then the materials are continued to be added, the blending temperature is 50-60°C, the stirring rate is 300-1000rmp, and after the addition is completed, stirring is continued for 60-120 minutes, and the turbine oil compound is obtained after filtering with a 10μm filter bag;

[0019] S2: preheat the base oil to 45-50° C., add the turbine oil compound and antifoaming agent obtained in step S1, stir at a rate of 300-1000 rpm for 30-60 min, and filter with a 10 μm filter bag to obtain turbine oil.

[0020] In a fourth aspect, the present invention provides application of the turbine oil in the field of steam turbines.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The cosolvent component in the turbine oil compound of the present invention has the effects of improving the low-temperature storage stability of the compound, improving the compatibility between the individual agents, and improving the filterability of the turbine oil.

[0023] 2. The turbine oil of the present invention contains a turbine oil compound, which can well balance the acid value, rust prevention, anti-emulsification and oxidation performance of the oil. The compound is added to a suitable base oil and supplemented with an appropriate amount of anti-foaming agent to obtain an L-TSA turbine oil (Grade A) product that meets the requirements of GB11120-2011 "Turbine Oil" and has the characteristics of long oxidation life, excellent rust prevention and anti-emulsification performance.

[0024] 3. The turbine oil preparation method of the present invention is simple, low-cost, stable and efficient in performance, and ensures safe and stable operation of the equipment. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments, but they do not constitute any limitation to the present invention.

[0026] The preparation method of the turbine oil compound and turbine oil in each embodiment of the present invention comprises the following steps:

[0027] S1: Add the cosolvent, metal deactivator, rust inhibitor, demulsifier and antioxidant in sequence, wherein each single dose is stirred for 8 minutes before continuing to feed, the blending temperature is 55°C, the stirring rate is 500rmp, and after the feeding is completed, the mixture is stirred for another 90 minutes, and filtered with a 10μm filter bag to obtain the turbine oil compound;

[0028] S2: preheat the base oil to 48° C., add the turbine oil compound and antifoaming agent obtained in step S1, stir at a rate of 500 rpm for 40 min, and filter with a 10 μm filter bag to obtain turbine oil.

[0029] Embodiments 1 to 5

[0030] The turbine oil compound provided in Examples 1-5 has a ratio as shown in Table 1:

[0031] Table 1 Weight parts of each component in Examples 1 to 5

[0032]

[0033] Comparative Examples 1-5

[0034] The turbine oil compound provided in the comparative example has a ratio as shown in Table 2:

[0035] Table 2 Weight parts of each component in Comparative Examples 1 to 5

[0036]

[0037]

[0038] Test Case

[0039] The turbine oil composites of Examples 1 to 5 and Comparative Examples 1 to 5 are prepared into L-TSA32 turbine oil (Grade A) products, and the preparation method comprises:

[0040] The turbine oil composites of Examples 1 to 5 and Comparative Examples 1 to 5 were added to the base oil at 0.8 wt% of the total mass of the turbine oil, wherein the base oil was a mixture of HVI Ib150 and HVI II+6, each accounting for 50% of the total mass of the base oil, and the base oil accounted for 99.19% of the total mass of the turbine oil, and the antifoaming agent was Jinzhou Shengda 1# composite antifoaming agent, accounting for 0.01 wt% of the total mass of the turbine oil. The turbine oil containing the turbine oil composites of Examples 1 to 5 and Comparative Examples 1 to 5 was obtained.

[0041] The rotating oxygen bomb, liquid phase rust and acid value of the turbine oil prepared with the turbine oil composites of Examples 1 to 5 and Comparative Examples 1 to 5 were tested, and the storage stability of the composites was investigated. The results are shown in Table 3.

[0042] Table 3 Test results of the embodiments and comparative examples

[0043]

[0044]

[0045] It can be seen from Table 3 that the turbine oil compounds of Examples 1 to 5 can well balance the acid value, rust prevention, anti-emulsification and oxidation performance of the oil.

[0046] Specifically, in Examples 1 to 5, the turbine oil composite is prepared by selecting appropriate types and dosages of antioxidants, metal deactivators, rust inhibitors, demulsifiers, and cosolvents and preparing them according to the specified steps. The composite is added to a suitable base oil and supplemented with an appropriate amount of antifoaming agent to obtain an L-TSA turbine oil (Grade A) product that meets the requirements of GB 11120-2011 "Turbine Oil" and has the characteristics of long oxidation life, excellent rust prevention performance and anti-emulsification performance.

[0047] Any numerical value mentioned in the present invention, if there is only an interval of two units between any minimum value and any maximum value, includes all values ​​from the minimum value to the maximum value each time increasing by one unit. For example, if the amount of a component, or the value of a process variable such as temperature, pressure, time, etc. is declared to be 50-90, in this specification it means that 51-89, 52-88... and 69-71 and 70-71 are specifically listed. For non-integer values, 0.1, 0.01, 0.001 or 0.0001 can be appropriately considered as a unit. These are just some specially specified examples. In this application, in a similar manner, all possible combinations of numerical values ​​between the listed minimum and maximum values ​​are considered to have been disclosed.

[0048] It should be noted that the embodiments described above are only used to explain the present invention and do not constitute any limitation to the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present invention may be modified as specified within the scope of the claims of the present invention, and the present invention may be revised without departing from the scope and spirit of the present invention. Although the present invention described therein relates to specific methods, materials and embodiments, it does not mean that the present invention is limited to the specific examples disclosed therein, on the contrary, the present invention can be extended to all other methods and applications with the same functions.

Claims

1. A turbine oil compound, which, based on 100 parts by mass of the compound, consists of the following components: 60-80 parts of antioxidant, 5-15 parts of metal deactivator, 5-10 parts of rust inhibitor, 0.5-5 parts of demulsifier, 5-30 parts of solvent.

2. The turbine oil compound according to claim 1, characterized in that: The antioxidant comprises a first antioxidant, a second antioxidant and a third antioxidant, wherein the mass ratio of the first antioxidant, the second antioxidant and the third antioxidant is (0-50): (0-30): (0-30); preferably, the mass ratio is (20-50): (10-25): (10-25); The first antioxidant is a phenolic antioxidant, more preferably, the phenolic antioxidants include T512 and Irganox L135; the second antioxidant is a diphenylamine antioxidant, more preferably, the diphenylamine antioxidants include T534 and Irganox L57; the third antioxidant is an α-naphthylamine antioxidant, more preferably, the α-naphthylamine antioxidants include T531 and Irganox L06.

3. The turbine oil compound according to claim 1 or 2, characterized in that: The metal deactivator is selected from at least one of benzotriazole derivatives or thiadiazole derivatives. Preferably, the benzotriazole derivatives include T552 and Irgamet 39, and the thiadiazole derivatives include T561.

4. The turbine oil compound according to any one of claims 1 to 3, characterized in that: The rust inhibitor is selected from at least one of alkenyl succinic acid type rust inhibitor T746, succinate derivative Maxwell 4800, and amino acid derivative K1031.

5. The turbine oil compound according to any one of claims 1 to 4, characterized in that: The demulsifier is selected from at least one of ethylene oxide propylene oxide block polyether demulsifiers and polyoxyethylene polyoxypropylene ether demulsifiers, wherein the ethylene oxide propylene oxide block polyether demulsifiers include DL32 and PE 6100, and the polyoxyethylene polyoxypropylene ether demulsifiers include L61.

6. The turbine oil compound according to any one of claims 1 to 5, characterized in that: The cosolvent is at least one of polyether or polyol ester, the polyether includes OSP 32, and the polyol ester includes trimethylolpropane ester and SynativeES TMTC.

7. A turbine oil, characterized in that: The components thereof include base oil, the turbine oil complex according to any one of claims 1 to 6 and an optional antifoaming agent.

8. The turbine oil according to claim 7, characterized in that The base oil includes API Class I, Class II and Class III oils, and the kinematic viscosity at 40°C is between 15 and 95 mm 2 / s; the base oil accounts for 97-99.5wt% of the total amount of turbine oil; the turbine oil compound accounts for 0.5-3wt% of the total amount of turbine oil; the anti-foaming agent accounts for 0.005-0.05wt% of the total amount of turbine oil; Preferably, the antifoaming agent includes a silicon-type antifoaming agent or a non-silicon-type antifoaming agent.

9. A method for preparing turbine oil according to claim 7 or 8, characterized in that: include: The base oil, the turbine oil compound according to any one of claims 1 to 6 and an optional antifoaming agent are uniformly mixed to obtain; Preferably, the mixing includes stirring mixing, and the mixing conditions include: mixing temperature of 50-60° C., stirring rate of 300-1000 rpm, and stirring time of 60-120 min.

10. Use of the turbine oil according to claim 7 or 8 or the turbine oil prepared by the preparation method according to claim 9 in the field of steam turbines.

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