CN112029565A - Process and equipment for regenerating and repairing steam turbine oil of power plant - Google Patents
Process and equipment for regenerating and repairing steam turbine oil of power plant Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000010736 steam turbine oil Substances 0.000 title abstract description 15
- 230000001172 regenerating effect Effects 0.000 title description 5
- 238000001914 filtration Methods 0.000 claims abstract description 78
- 230000008439 repair process Effects 0.000 claims abstract description 55
- 239000000654 additive Substances 0.000 claims abstract description 35
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 230000008929 regeneration Effects 0.000 claims abstract description 29
- 238000011069 regeneration method Methods 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims abstract description 26
- 239000002699 waste material Substances 0.000 claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims abstract description 21
- 238000007670 refining Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- 239000010723 turbine oil Substances 0.000 claims description 100
- 239000012452 mother liquor Substances 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 7
- 230000003078 antioxidant effect Effects 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001471 micro-filtration Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000003749 cleanliness Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
- C10M175/0033—Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0091—Treatment of oils in a continuous lubricating circuit (e.g. motor oil system)
Abstract
The invention discloses a regeneration and repair process for steam turbine oil in a power plant, which can effectively adsorb, filter and remove fluid organic polar impurities and non-polar particulate impurities in waste steam turbine oil and obviously improve the quality index of the oil product by adopting a combined regeneration and repair process technology of negative pressure flash evaporation → electric adsorption refining → precise filtration → additive repair → precise filtration. The whole process does not relate to severe operating environments such as high temperature and the like, no secondary pollution is generated, the steam turbine oil is directly recycled to equipment after being purified and repaired on line, the occupied site is small, the equipment investment is small, the operation is simple, the regeneration efficiency is high, and the capital investment and the waste oil disposal cost of enterprises in the aspect of steam turbine oil purchasing every year are greatly reduced.
Description
Technical Field
The invention relates to the technical field of engine oil reprocessing, in particular to a process and equipment for regenerating and repairing turbine oil of a power plant.
Background
At present, the known regeneration processes of the waste lubricating oil for industrial equipment mainly comprise three main types, namely an acid process, an acid-free process and a hydrogenation process. The acid process generates serious secondary pollution, and the low yield of oil products is gradually replaced by the acid-free process; the acid-free process cancels acid-adding refining, but also introduces the problems of clay pollution, severe operating conditions and the like; the foreign hydrogenation process almost completely replaces clay refining, but the process flow is complex, the equipment cost is high, and the popularization condition is not provided at home. The turbine oil used in domestic electric power industry is treated according to the process, and in addition, the additional cost such as hazardous waste treatment cost and the like is added, so that the regeneration treatment time and cost of enterprises are obviously increased.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a process and equipment for regenerating and repairing turbine oil of a power plant.
In order to achieve the purpose, the invention adopts the following technical scheme:
a regeneration and repair process for turbine oil of a power plant comprises the following steps:
regeneration process
(S101) heating the waste turbine oil to raise the temperature and reduce the viscosity, and then separating free water in the waste turbine oil and light components generated by decomposition of the turbine oil by flash evaporation under the vacuum negative pressure condition;
(S102) performing electro-adsorption refining on the flashed turbine oil, and adsorbing and separating substances with polar charges in the turbine oil;
(S103) carrying out precise filtration on the turbine oil subjected to the electro-adsorption refining treatment, and filtering and removing residual particulate mechanical impurities in the turbine oil;
(S104) the regenerated turbine oil after the precision filtration enters an online detection system for index detection;
(S105) if the index is not qualified, repeating the step (S104) to perform circulating precision filtration on the steam turbine oil until the result meets the standard;
second, repair process
(S201) circularly mixing part of the regenerated turbine oil with an additive to prepare an additive mother liquor;
(S202) stirring and mixing the additive mother liquor and the regenerated turbine oil according to a certain flow rate, and then carrying out precision filtration to remove residual particulate impurities and the like in the turbine oil, thereby finally obtaining the repaired turbine oil;
(S203) detecting the repaired turbine oil through an online detection system;
and (S204) if the detection is not qualified, repeating the steps (S201) and (S202) to carry out circulating repair filtration until the relevant indexes are qualified.
Preferably, in the step (S101), the waste turbine oil is heated at a temperature of 50-80 ℃ under a vacuum pressure of-0.08 MPa.
Preferably, in the step (S102), the pressurization voltage for the electro-adsorption purification is 2500V to 5000V, and the current is 8mA to 50 mA.
Preferably, in the step (S103), the mesh of the microfiltration filter element is 15-1 μm, and the pressure is less than or equal to 0.6 MPa.
Preferably, in the step (S201), the additives include 400ppm to 1 per mill of antifoaming agent, 50 ppm to 500ppm of demulsifier, 2 per mill to 8 per mill of antioxidant, and 3 per mill to 5% of composite additive, the temperature of the circular mixing is 50 ℃ to 70 ℃, and the cycle time is 30min to 60 min.
Preferably, in the step (S202), the flow ratio of the additive mother liquor to the regenerated turbine oil is 0.0005 to 0.0012.
In addition, the invention also provides equipment for a power plant turbine oil regeneration and repair process, which comprises regeneration process equipment and repair process equipment, wherein the regeneration process equipment comprises a raw oil storage tank, an electromagnetic heater, a vacuum tank, a refining and filtering device, a high-precision filtering device I and an online monitoring system, the raw oil storage tank is connected with the electromagnetic heater through a conveying pump, the electromagnetic heater is connected with the vacuum tank, the vacuum tank is connected with a vacuum pump, the vacuum tank is connected with the refining and filtering device through the conveying pump, the refining and filtering device is connected with the high-precision filtering device I, the high-precision filtering device I is connected with a storage tank I, the storage tank I is connected with the online detection system, the repair process equipment comprises an additive mother liquor storage tank, a repair tank and a high-precision filtering device II, one end of the additive mother liquor storage tank is connected with an outlet of the storage tank I through the conveying pump, the other end of the high-precision filter device is connected with an inlet of a repair tank through a delivery pump, the repair tank is connected with a high-precision filter device, and the high-precision filter device II is connected with an online detection system and a storage tank II.
Preferably, the regeneration process equipment further comprises a first standby storage tank, one end of the first standby storage tank is connected with an inlet of the first high-precision filtering device through a delivery pump, the other end of the first standby storage tank is connected with the first storage tank, the repair process equipment further comprises a second standby storage tank, one end of the second standby storage tank is connected with the repair tank, and the other end of the second standby storage tank is connected with an outlet of the second high-precision filtering device.
Preferably, the additive mother liquor storage tank is provided with a pipeline mixer.
Preferably, the refined filtering device comprises a plurality of electric adsorption tanks connected in series, and the first high-precision filtering device and the second high-precision filtering device both comprise two high-precision filtering tanks connected in parallel.
The invention has the following beneficial effects:
1. by adopting the combined regeneration and repair technology of negative pressure flash evaporation → electro-adsorption refining → precise filtration → additive repair → precise filtration, the fluid organic polar impurities and non-polar particulate impurities in the waste turbine oil can be effectively adsorbed, filtered and removed, and the quality index of the oil product is obviously improved.
2. Repairing the influence of components which are lost or deteriorated due to the influence of external factors such as oxidation and the like on the performance of the turbine oil, so that the performance index of the turbine oil is close to or exceeds the new oil standard.
3. The whole process does not relate to severe operating environments such as high temperature and the like, no secondary pollution is generated, the steam turbine oil is directly recycled to equipment after being purified and repaired on line, the occupied site is small, the equipment investment is small, the operation is simple, the regeneration efficiency is high, and the capital investment and the waste oil disposal cost of enterprises in the aspect of steam turbine oil purchasing every year are greatly reduced.
Drawings
FIG. 1 is a schematic diagram of an apparatus for a process for regenerating and repairing turbine oil from a power plant according to the present invention;
in the figure: the system comprises a raw oil storage tank 1, an electromagnetic heater 2, a vacuum tank 3, a vacuum pump 4, a refining and filtering device 5, a delivery pump 6, a high-precision filtering device I7, a storage tank I8, an online detection system 9, an electric adsorption tank 10, a high-precision filtering tank 11, an additive mother liquor storage tank 12, a repair tank 13, a high-precision filtering device II 14, a storage tank II 15, a spare storage tank II 16, a spare storage tank I17 and a pipeline mixer 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
The method comprises the steps of putting L-TSA46 waste turbine oil for certain power plants in Shanxi into a raw oil storage tank 1, conveying the waste turbine oil into an electromagnetic heater 2 through a conveying pump 6, heating to 60 ℃ and keeping the temperature constant, performing vacuum circulation in a vacuum tank 3 and the electromagnetic heater 2 under the negative pressure of-0.08 MPad, and separating free water in the waste turbine oil and light components generated by decomposition of the turbine oil through flash evaporation; the flashed turbine oil enters three series-connected electric adsorption tanks 10 of a refining and filtering device 5, and organic naphthenic acid, alkaline nitrogen, bound water, metal salts and other substances with polar charges in the turbine oil are adsorbed, stripped and separated under the conditions of a three-dimensional electrostatic field, an electric adsorption voltage of 2000V and an electric adsorption current of 20 mA; and then the turbine oil is conveyed to a high-precision filtering tank 11 of a high-precision filtering device I7 through a conveying pump 6, the fine filtering pressure of the high-precision filtering tank 11 is less than or equal to 0.25MPa, and the sieve pores of a precision filter element are 12 microns, so that residual particulate mechanical impurities in the turbine oil are filtered and removed, and the cleanliness of oil products is obviously improved. And (3) the regenerated turbine oil after high-precision filtration enters an online detection system 9 for index detection, and when the conventional quality indexes such as moisture, acid value, flash point, viscosity, sticking index, cleanliness and the like reach the national standard, the regenerated turbine oil is conveyed into a turbine oil repairing process through a first storage tank 8. If the indexes are not qualified, the turbine oil enters a standby storage tank I17 and then passes through a high-precision filtering tank 11 of a high-precision filtering device I7 to be circularly refined under the condition that the fine filtering pressure is less than or equal to 0.6MPa until the result meets the standard, and then the process enters a repair process
The repair process comprises the following steps: and (2) conveying part of the turbine oil in the first storage tank (8) to an additive mother liquor storage tank (12) through a conveying pump (6), adding 800ppm methyl silicone oil antifoaming agent, 300ppm mT1001 and 4% amine antioxidant and phenol antioxidant into the additive mother liquor storage tank (12), circularly mixing the two in a pipeline mixer (18), wherein the mixing temperature is 58 ℃, and the circulation time is 40min to prepare additive mother liquor, conveying the additive mother liquor and the regenerated turbine oil to a repair tank (13) through the conveying pump (6) according to the flow ratio of 0.001, stirring, mixing and stirring in the repair tank (13), wherein the stirring speed is 8000r/min, stirring for 40min, and then filtering to remove residual particulate impurities and the like in an oil sample through the conveying pump to a high-precision filter tank, thereby finally obtaining the repaired turbine oil. The repaired steam turbine oil passes through an online detection system 13, and enters a second storage tank 15 if the performance indexes such as standard foam characteristics, oxidation stability, emulsification resistance and the like are qualified; if the detection is not qualified, the oil enters the second standby storage tank 16, enters the repair tank 13 for circular repair filtration until relevant indexes are qualified, enters the second storage tank 16 for filling storage and recycling, and finally part of important indexes of the obtained repaired steam turbine oil are shown in the table 1 (other indexes all meet the requirements of relevant national standards):
TABLE 1 comparison of before and after repair of No. 46 waste turbine oil for certain power plant in Shanxi province
Example 2
The method comprises the steps of putting waste turbine oil L-TSA32 for steel factories in inner Mongolia into a raw oil storage tank 1, conveying the waste turbine oil into an electromagnetic heater 2 through a conveying pump 6, heating to 55 ℃ and keeping the temperature constant, performing vacuum circulation in a vacuum tank 3 and the electromagnetic heater 2 under the negative pressure of-0.08 MPad, and separating free water in the waste turbine oil and light components generated by decomposition of the turbine oil through flash evaporation; the flashed turbine oil enters three series-connected electric adsorption tanks 10 of a refining and filtering device 5, and organic naphthenic acid, alkaline nitrogen, bound water, metal salts and other substances with polar charges in the turbine oil are adsorbed, stripped and separated under the conditions of a three-dimensional electrostatic field, electric adsorption voltage of 1500V and electric adsorption current of 18 mA; and then the turbine oil is conveyed to a high-precision filtering tank 11 of a high-precision filtering device I7 through a conveying pump 6, the fine filtering pressure of the high-precision filtering tank 11 is less than or equal to 0.2MPa, and the sieve pores of a precision filter element are 8 microns, so that residual particulate mechanical impurities in the turbine oil are filtered and removed, and the cleanliness of oil products is obviously improved. And (3) the regenerated turbine oil after high-precision filtration enters an online detection system 9 for index detection, and when the conventional quality indexes such as moisture, acid value, flash point, viscosity, sticking index, cleanliness and the like reach the national standard, the regenerated turbine oil is conveyed into a turbine oil repairing process through a first storage tank 8. If the indexes are not qualified, the turbine oil enters a standby storage tank I17 and then passes through a high-precision filtering tank 11 of a high-precision filtering device I7 to be circularly refined under the condition that the fine filtering pressure is less than or equal to 0.6MPa until the result meets the standard, and then the process enters a repair process
The repair process comprises the following steps: and conveying part of the turbine oil in the first storage tank 8 to an additive mother liquor storage tank 12 through a conveying pump 6, adding 500ppm of silicone antifoaming agent, 50ppT1001 and 5% of phenol antioxidant into the additive mother liquor storage tank 12, circularly mixing the silicone antifoaming agent and the phenol antioxidant in a pipeline mixer 18 at the mixing temperature of 60 ℃ for 30min to prepare an additive mother liquor, conveying the additive mother liquor and the regenerated turbine oil into a repair tank 13 through the conveying pump 6 according to the flow ratio of 0.0008, stirring, mixing and stirring in the repair tank 13 at the stirring speed of 8000r/min for 40min, then conveying the additive mother liquor and the regenerated turbine oil to a high-precision filter tank through the conveying pump to remove residual particulate impurities and the like in an oil sample, and finally obtaining the repaired turbine oil. The repaired steam turbine oil passes through an online detection system 13, and enters a second storage tank 15 if the performance indexes such as standard foam characteristics, oxidation stability, emulsification resistance and the like are qualified; if the detection is not qualified, the oil enters the second standby storage tank 16, enters the repair tank 13 for circular repair filtration until relevant indexes are qualified, enters the second storage tank 16 for filling storage and recycling, and finally part of important indexes of the obtained repaired steam turbine oil are shown in the table 2 (other indexes all meet the requirements of relevant national standards):
TABLE 2 comparison of No. 32 waste turbine oils for power plant of inner Mongolia before and after repair
Example 3
Besides the turbine oil, the purification and restoration process and the equipment are used for restoration and restoration of No. 46 waste antiwear hydraulic oil used by a certain steel mill in Hebei, and the recycling effect is excellent. The specific process and results are as follows: waste antiwear hydraulic oil is contained in a raw oil storage tank 1, waste turbine oil is conveyed into an electromagnetic heater 2 through a conveying pump 6 and heated to 70 ℃ and kept at a constant temperature, vacuum circulation is carried out in a vacuum tank 3 and the electromagnetic heater 2 under the negative pressure of-0.09 MPad, and free water in the waste turbine oil and light components generated by decomposition of the turbine oil are separated through flash evaporation; the flashed turbine oil enters three series-connected electric adsorption tanks 10 of a refining and filtering device 5, and organic naphthenic acid, alkaline nitrogen, bound water, metal salts and other substances with polar charges in the turbine oil are adsorbed, stripped and separated under the conditions of a three-dimensional electrostatic field, an electric adsorption voltage of 2500V and an electric adsorption current of 25 mA; and then the turbine oil is conveyed to a high-precision filtering tank 11 of a high-precision filtering device I7 through a conveying pump 6, the fine filtering pressure of the high-precision filtering tank 11 is less than or equal to 0.35MPa, and the sieve pores of a precision filter element are 12 microns, so that residual particulate mechanical impurities in the turbine oil are filtered and removed, and the cleanliness of oil products is obviously improved. And (3) the regenerated turbine oil after high-precision filtration enters an online detection system 9 for index detection, and when the conventional quality indexes such as moisture, acid value, flash point, viscosity, sticking index, cleanliness and the like reach the national standard, the regenerated turbine oil is conveyed into a turbine oil repairing process through a first storage tank 8. If the indexes are not qualified, the turbine oil enters a standby storage tank I17 and then passes through a high-precision filtering tank 11 of a high-precision filtering device I7 to be circularly refined under the condition that the fine filtering pressure is less than or equal to 0.6MPa until the result meets the standard, and then the process enters a repair process
The repair process comprises the following steps: and (2) conveying part of the turbine oil in the first storage tank (8) to an additive mother liquor storage tank (12) through a conveying pump (6), adding 600ppm of silicon-free antifoaming agent, 800ppT1001 and 4% phenol antioxidant into the additive mother liquor storage tank (12), circularly mixing the two in a pipeline mixer (18), wherein the mixing temperature is 58 ℃, and the circulating time is 30min to prepare an additive mother liquor, conveying the additive mother liquor and the regenerated turbine oil to a repair tank (13) through the conveying pump (6) according to the flow ratio of 0.0011, stirring, mixing and stirring in the repair tank (13), wherein the stirring speed is 10000r/min, stirring for 30min, then conveying the mixture to a high-precision filter tank through the conveying pump, filtering to remove residual particulate impurities and the like in an oil sample, and finally obtaining the repaired turbine oil. The repaired steam turbine oil passes through an online detection system 13, and enters a second storage tank 15 if the performance indexes such as standard foam characteristics, oxidation stability, emulsification resistance and the like are qualified; if the detection is not qualified, the oil enters the second standby storage tank 16, enters the repair tank 13 for circular repair filtration until relevant indexes are qualified, enters the second storage tank 16 for filling storage and recycling, and finally part of important indexes of the obtained repaired steam turbine oil are shown in the table 2 (other indexes all meet the requirements of relevant national standards):
TABLE 3 comparison of No. 46 waste antiwear hydraulic oil used in Hebei steel works before and after restoration
Through the embodiments, the polar substances such as oxidative deteriorated organic acid, alkaline nitrogen, bound water, metal salts and the like in the oil product are effectively removed through the combined perfect regeneration and repair process route and in an online purification mode on the basis of the electro-adsorption refining technology, so that the quality index of the oil product is remarkably improved; the regenerated turbine oil reaches the national new oil use quality standard by selecting factors such as optimized repair additive types, addition sequence, operation conditions and the like, and is recycled to industrial equipment. The regeneration and repair process and equipment for the waste lubricating oil are suitable for turbine oil, can meet the requirements of regeneration, repair and recycling of other industrial waste mineral oil, have great significance for improving comprehensive development and utilization of resources, saving energy, protecting environment and promoting development of circular economy, and effectively pass through national relevant industrial development policies and plans.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The regeneration and repair process of the turbine oil of the power plant is characterized by comprising the following steps of:
regeneration process
(S101) heating the waste turbine oil to raise the temperature and reduce the viscosity, and then separating free water in the waste turbine oil and light components generated by decomposition of the turbine oil by flash evaporation under the vacuum negative pressure condition;
(S102) performing electro-adsorption refining on the flashed turbine oil, and adsorbing and separating substances with polar charges in the turbine oil;
(S103) carrying out precise filtration on the turbine oil subjected to the electro-adsorption refining treatment, and filtering and removing residual particulate mechanical impurities in the turbine oil;
(S104) the regenerated turbine oil after the precision filtration enters an online detection system for index detection;
(S105) if the index is not qualified, the turbine oil is subjected to the circulating fine filtration by repeating the step (S104) until the result meets the standard;
second, repair process
(S201) circularly mixing part of the regenerated turbine oil with an additive to prepare an additive mother liquor;
(S202) stirring and mixing the additive mother liquor and the regenerated turbine oil according to a certain flow rate, and then carrying out precision filtration to remove residual particulate impurities and the like in the turbine oil, thereby finally obtaining the repaired turbine oil;
(S203) detecting the repaired turbine oil through an online detection system;
and (S204) if the detection is not qualified, repeating the steps (S201) and (S202) to carry out circulating repair filtration until the relevant indexes are qualified.
2. The power plant turbine oil regeneration repair process according to claim 1, wherein in the step (S101), the waste turbine oil is heated at a temperature of 50-80 ℃ and a vacuum pressure of-0.08 MPa.
3. The power plant turbine oil regeneration and repair process of claim 1, wherein in the step (S102), the pressurization voltage of the electro-adsorption refining is 2500V-5000V, and the current is 8-50 mA.
4. The power plant turbine oil regeneration repair process according to claim 1, wherein in the step (S103), the mesh of the microfiltration filter element is 15 μm-1 μm, and the pressure is less than or equal to 0.6 MPa.
5. The power plant turbine oil regeneration repair process according to claim 1, wherein in the step (S201), the additives include 400ppm to 1% per thousand of antifoaming agent, 50 ppm to 500ppm of demulsifier, 2% per thousand to 8% per thousand of antioxidant, and 3% per thousand to 5% of composite additive, the temperature of the circulating mixing is 50 ℃ to 70 ℃, and the circulating time is 30min to 60 min.
6. The power plant turbine oil regeneration and repair process according to claim 5, wherein in step (S202), the flow ratio of the additive mother liquor to the regenerated turbine oil is 0.0005-0.0012.
7. An apparatus for the power plant turbine oil regeneration and repair process according to any one of claims 1 to 6, which comprises regeneration process equipment and repair process equipment, wherein the regeneration process equipment comprises a raw oil storage tank, an electromagnetic heater, a vacuum tank, a refined filtering device, a first high-precision filtering device and an online monitoring system, the raw oil storage tank is connected with the electromagnetic heater through a delivery pump, the electromagnetic heater is connected with the vacuum tank, the vacuum tank is connected with a vacuum pump, the vacuum tank is connected with the refined filtering device through the delivery pump, the refined filtering device is connected with the first high-precision filtering device, the first high-precision filtering device is connected with the storage tank, the first storage tank is connected with the online detection system, the repair process equipment comprises an additive mother liquor storage tank, a repair tank and a second high-precision filtering device, the one end of additive mother liquor holding vessel passes through the exit linkage of delivery pump and holding vessel one, the other end with pass through the delivery pump with restore the entry linkage of jar, it is connected with high-accuracy filter equipment to restore the jar, high-accuracy filter equipment two is connected with on-line measuring system and holding vessel two.
8. The equipment for the power plant turbine oil regeneration and restoration process according to claim 7, further comprising a first spare storage tank, wherein one end of the first spare storage tank is connected with an inlet of the first high-precision filtering device through a delivery pump, the other end of the first spare storage tank is connected with the first storage tank, the restoration process equipment further comprises a second spare storage tank, one end of the second spare storage tank is connected with the restoration tank, and the other end of the second spare storage tank is connected with an outlet of the second high-precision filtering device.
9. The plant turbine oil regeneration and repair process equipment of claim 7, wherein the additive mother liquor storage tank is provided with a pipeline mixer.
10. The apparatus for the regeneration and repair process of turbine oil from power plant according to claim 7, wherein the refined filtering device comprises a plurality of electro-adsorption tanks connected in series, and the first high-precision filtering device and the second high-precision filtering device each comprise two high-precision filtering tanks connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061136.5A CN112029565A (en) | 2020-09-30 | 2020-09-30 | Process and equipment for regenerating and repairing steam turbine oil of power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113356945A (en) * | 2021-06-21 | 2021-09-07 | 江苏万标检测有限公司 | Method for online treatment of steam turbine oil by using composite additive |
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| CN113356945A (en) * | 2021-06-21 | 2021-09-07 | 江苏万标检测有限公司 | Method for online treatment of steam turbine oil by using composite additive |
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