CN116731792B - Ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent and preparation method thereof - Google Patents
Ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent and preparation method thereof Download PDFInfo
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- CN116731792B CN116731792B CN202311020165.0A CN202311020165A CN116731792B CN 116731792 B CN116731792 B CN 116731792B CN 202311020165 A CN202311020165 A CN 202311020165A CN 116731792 B CN116731792 B CN 116731792B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 113
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 86
- 238000002161 passivation Methods 0.000 title claims abstract description 76
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 150000001875 compounds Chemical class 0.000 title claims abstract description 19
- 230000001877 deodorizing effect Effects 0.000 title claims description 17
- 238000000034 method Methods 0.000 claims abstract description 53
- 230000008569 process Effects 0.000 claims abstract description 46
- 238000004332 deodorization Methods 0.000 claims abstract description 41
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 230000003197 catalytic effect Effects 0.000 claims abstract description 28
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 25
- LPMBTLLQQJBUOO-KTKRTIGZSA-N (z)-n,n-bis(2-hydroxyethyl)octadec-9-enamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)N(CCO)CCO LPMBTLLQQJBUOO-KTKRTIGZSA-N 0.000 claims abstract description 23
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 23
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 23
- 229940049964 oleate Drugs 0.000 claims abstract description 23
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 23
- -1 polyoxyethylene Polymers 0.000 claims abstract description 23
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 23
- 239000002781 deodorant agent Substances 0.000 claims abstract description 22
- 239000002283 diesel fuel Substances 0.000 claims abstract description 22
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims abstract description 21
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims abstract description 21
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 238000003756 stirring Methods 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 description 19
- 239000012071 phase Substances 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- VFTFKUDGYRBSAL-UHFFFAOYSA-N 15-crown-5 Chemical compound C1COCCOCCOCCOCCO1 VFTFKUDGYRBSAL-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000009920 chelation Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/74—Carboxylates or sulfonates esters of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/18—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/18—Hydrocarbons
- C11D3/187—Hydrocarbons aromatic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2096—Heterocyclic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3942—Inorganic per-compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/43—Solvents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The application relates to a ferrous sulfide passivation deodorization and oil scale cleaning compound type cleaning agent and a preparation method thereof, wherein the cleaning agent comprises catalytic diesel oil, C9 aromatic hydrocarbon, 15-crown ether-5, passivation deodorant and emulsifying agent, wherein the catalytic diesel oil, the C9 aromatic hydrocarbon, the 15-crown ether-5, the passivation deodorant and the emulsifying agent respectively comprise the following components in percentage by mass in the cleaning agent: 20-60% of catalytic diesel oil, 20-60% of C9 aromatic hydrocarbon, 10-30% of 15-crown ether-5, 0.5-2% of sodium persulfate or potassium persulfate, 0.01-5% of oleic acid diethanolamide, 0.01-5% of polypropylene glycol 1000 dioleate and 1-5% of polyoxyethylene oleate. By adding the composite cleaning agent in the shutdown cooling process of the equipment, the passivation of ferrous sulfide, deodorization cleaning and oil dirt cleaning can be synchronously completed, and meanwhile, a passivation film is formed on the surface of the equipment, so that the anti-corrosion effect is achieved.
Description
Technical Field
The application relates to the technical field of petrochemical equipment cleaning, in particular to a ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent and a preparation method thereof.
Background
Petrochemical equipment produces sulfur-containing substances such as ferrous sulfide (FeS), hydrogen sulfide, thioether, mercaptan and the like in the petroleum refining process, and also produces viscous oil dirt (mixtures such as colloid, asphaltene, coke powder, catalyst powder and the like, which are insoluble in petroleum components), so that the following problems exist: when the concentration of ferrous sulfide is too high, the spontaneous combustion phenomenon can easily occur, so that the equipment is burnt out and the life safety of overhaulers is threatened, meanwhile, the equipment is subjected to serious sulfur corrosion and erosion, even corrosion products such as FeS and the like are directly formed on the surface of the equipment, strong oxidation-reduction reaction can occur when the equipment is contacted with oxygen in the air, fire and explosion are initiated by heat release, the equipment is damaged by fire and explosion, and toxic gases such as hydrogen sulfide and the like generated by combustion can cause great harm to people and the environment, so that the ferrous sulfide is removed after passivation, deodorization and cleaning, and a passivation film is formed on the metal surface of the equipment, so that the air can be effectively isolated, and the equipment corrosion is prevented; organic sulfur-containing substances such as hydrogen sulfide, thioether, mercaptan and the like can not be timely and effectively cleaned and discharged, so that personal injury can be caused to inspection and maintenance personnel, and the environment is polluted; the working performance of petrochemical equipment can be affected after oil dirt is deposited, so that the equipment failure rate is increased, and the energy consumption is increased.
The existing cleaning method comprises the following steps: completing oil dirt cleaning in the oil phase in the shutdown process of the device; and then completing ferrous sulfide passivation, deodorization and cleaning after the shutdown and blowing of the device are qualified. Step-by-step cleaning is carried out under different states of the petrochemical device, a large amount of cleaning time is consumed, and the productivity of petrochemical equipment is affected; meanwhile, the water phase cleaning agent is adopted in the process of passivating and deodorizing ferrous sulfide, so that huge sewage quantity can be generated, and great pressure is brought to sewage treatment.
Therefore, it is desirable to provide a complex detergent which can realize three cleaning processes of ferrous sulfide passivation, deodorization cleaning and oil dirt cleaning simultaneously, effectively shorten the cleaning time, and effectively reduce the amount of sewage generated after cleaning, so as to solve the above-mentioned technical problems.
Disclosure of Invention
In order to solve the technical problems, the application provides a ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning and a preparation method thereof. Solves the technical problems of long cleaning time and large sewage yield in the prior art of step-by-step ferrous sulfide passivation, deodorization and oil dirt removal processes.
The technical effects of the application are realized by the following steps:
the ferrous sulfide passivation deodorization and oil scale cleaning composite cleaning agent comprises catalytic diesel oil, C9 aromatic hydrocarbon, 15-crown ether-5, passivation deodorant and emulsifying agent, wherein the catalytic diesel oil, the C9 aromatic hydrocarbon, the 15-crown ether-5 and the passivation deodorant are respectively prepared from the following components in percentage by mass in the cleaning agent: 20-60% of catalytic diesel oil, 20-60% of C9 aromatic hydrocarbon, 10-30% of 15-crown ether-5, 0.5-2% of passivation deodorant and 1.02-15% of emulsifying agent. Through chelation of 15-crown ether-5 in the composite cleaning agent, sodium persulfate which is insoluble in an organic solvent can be compatible with an oil phase, so that sodium persulfate can be dissolved in catalytic diesel oil and C9 aromatic hydrocarbon, and therefore ferrous sulfide passivation and deodorization functions are synchronously completed in the process of cleaning oil scale of the oil phase cleaning agent containing the catalytic diesel oil, the C9 aromatic hydrocarbon and 15-crown ether-5, cleaning time is effectively shortened, and no sewage is generated after cleaning.
The passivation deodorant is sodium persulfate and/or potassium persulfate.
The emulsifier is one or more of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate.
Further, when the emulsifier is composed of three materials of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate, the mass percentages of the oleic acid diethanolamide, the polypropylene glycol 1000 dioleate and the polyoxyethylene oleate in the cleaning agent are 0.01-5%,0.01-5% and 1-5%, respectively. By adding oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate into the composite cleaning agent, under the common emulsification action, sodium persulfate can be dissolved in 15-crown ether-5 and then is emulsified with catalytic diesel oil and C9 aromatic hydrocarbon to form stable emulsion, so that the cleaning effect of ferrous sulfide passivation, deodorization and oil scale removal processes can be improved.
In addition, the preparation method of the ferrous sulfide passivation deodorization and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning is also provided, the preparation method is realized based on the component proportion of the ferrous sulfide passivation deodorization and oil dirt cleaning compound cleaning agent, and the preparation method comprises the following steps:
A. the raw materials are accurately weighed based on the mass percentages of the components: catalytic diesel, C9 aromatics, 15-crown ether-5, passivation deodorant and emulsifier;
B. adding catalytic diesel and C9 aromatic hydrocarbon into a reaction kettle;
C. adding an emulsifying agent into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
D. adding 15-crown ether-5 into a reaction kettle, fully stirring, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
E. adding the passivation deodorant into a reaction kettle, fully stirring, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
F. ending the stirring process, checking the pH value of the prepared product, and packaging the product when the pH value of the product is 6-9.
Further, the step C includes:
(1) Adding oleic acid diethanolamide into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
(2) Adding polypropylene glycol 1000 dioleate into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
(3) Adding polyoxyethylene oleate into a reaction kettle, controlling the adding speed at the same time, keeping the temperature of the reaction kettle within a preset temperature range, and then fully stirring.
As described above, the application has the following beneficial effects:
1) By adding 15-crown ether-5 into the composite cleaning agent, sodium persulfate which is insoluble in an organic solvent under the chelation effect of 15-crown ether-5 can be dissolved with catalytic diesel oil and C9 aromatic hydrocarbon so as to realize that the sodium persulfate can be dissolved in the organic solvent, thereby synchronously completing the passivation and deodorization functions of ferrous sulfide in the process of cleaning oil-phase cleaning agent containing the catalytic diesel oil, the C9 aromatic hydrocarbon and the 15-crown ether-5, effectively shortening the cleaning time and avoiding sewage after cleaning.
2) By adding the oleic acid diethanolamide, the polypropylene glycol 1000 dioleate and the polyoxyethylene oleate into the composite cleaning agent, under the joint emulsification action of the composite cleaning agent, sodium persulfate and 15-crown ether-5 can be chelated and then emulsified with catalytic diesel oil and C9 aromatic hydrocarbon to form a stable oil phase solvent, so that the cleaning effect of ferrous sulfide passivation, deodorization and oil scale removal processes can be improved.
Drawings
In order to more clearly illustrate the technical solution of the present application, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It should be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained from these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a flowchart of a preparation method of a ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning in the embodiment of the specification.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
Example 1:
the embodiment of the specification provides a ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning, which comprises catalytic diesel oil, C9 aromatic hydrocarbon, 15-crown ether-5, passivation deodorizing agent and emulsifying agent, wherein the catalytic diesel oil, the C9 aromatic hydrocarbon, the 15-crown ether-5 and the passivation deodorizing agent comprise the following components in percentage by mass: 20-60% of catalytic diesel oil, 20-60% of C9 aromatic hydrocarbon, 10-30% of 15-crown ether-5, 0.5-2% of passivation deodorant, 1.02-15% of emulsifier and 1.02-15% of emulsifier.
Wherein the passivation deodorant is sodium persulfate and/or potassium persulfate; the emulsifier is one or more of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate.
In the prior art, the oil scale cleaning agent for petrochemical equipment is an oil phase cleaning agent, and the cleaning agent for finishing ferrous sulfide passivation and deodorization cleaning is a water-soluble cleaning agent, so that at least two cleaning processes are required for finishing three cleaning purposes of ferrous sulfide passivation, deodorization and oil scale removal. The first step of oil dirt cleaning process is completed, and then the second step of ferrous sulfide passivation and deodorization cleaning process is performed.
Wherein, the oil dirt cleaning process is to inject the oil dirt-removed oil phase cleaning agent into the oil phase system for cleaning in the shutdown process of petrochemical equipment. The passivation and deodorization cleaning process of ferrous sulfide is required to be carried out after the shutdown and purging of petrochemical equipment are qualified, namely, after the oil dirt cleaning process is finished, the equipment which is in a shutdown state after the oil dirt cleaning is finished is purged for a certain time, and the passivation and deodorization cleaning process of ferrous sulfide can be carried out only when the fact that the oil dirt residual quantity in the equipment meets the corresponding index is detected.
Thus, the passivation of ferrous sulfide, the preparation process before the deodorizing and cleaning process, and the cleaning mode of completing the cleaning step by step may cause excessive cleaning time consumption in the cleaning process. Meanwhile, the water phase cleaning agent is adopted in the passivation and deodorization processes of ferrous sulfide, huge sewage is discharged from equipment after cleaning, great pressure is brought to sewage treatment, and a great amount of manpower and material resources are also required in the discharge and transportation processes of sewage, so that the input cost is increased.
The existing cleaning method comprises the following steps: the first step of cleaning oil dirt in the oil phase is completed in the shutdown process of the device; then cleaning by using a water-soluble cleaning agent after the shutdown and purging of the device are qualified; and (3) completing the passivation, deodorization and cleaning of ferrous sulfide in the second step. The step-by-step cleaning process is carried out under different states of the device, so that a large amount of cleaning time is consumed, and the productivity of petrochemical equipment is affected; meanwhile, the water phase cleaning agent is adopted in the process of passivating and deodorizing ferrous sulfide, so that huge sewage quantity can be generated, and great pressure is brought to sewage treatment.
Therefore, the 15-crown ether-5 chelated sodium persulfate in the composite cleaning agent can dissolve the sodium persulfate in the oil phase, so that the composite cleaning agent can circulate together with the oil phase after being injected into petrochemical equipment in the shutdown process, the cleaning process with three cleaning functions of ferrous sulfide passivation, deodorization and oil removal can be completed at one time, meanwhile, sewage is not required to be discharged after the cleaning is completed, the sewage discharge cost is reduced, and the environment is positively influenced.
Example 2:
the embodiment of the specification provides a preparation method of a ferrous sulfide passivation deodorization and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning, wherein the preparation method is realized based on the component proportion of the cleaning agent in the embodiment 1, and the preparation method comprises the following steps:
A. the raw materials are accurately weighed based on the mass percentages of the components: catalytic diesel, C9 aromatics, 15-crown ether-5, passivation deodorant and emulsifier;
wherein the passivation deodorant is sodium persulfate and/or potassium persulfate; the emulsifier is one or more of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate.
In this embodiment, the passivating deodorant is sodium persulfate; the emulsifier consists of three materials of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate, wherein the mass percentages of the oleic acid diethanolamide, the polypropylene glycol 1000 dioleate and the polyoxyethylene oleate in the cleaning agent are respectively 0.01-5%,0.01-5% and 1-5%.
B. Adding catalytic diesel and C9 aromatic hydrocarbon into a reaction kettle;
before preparing the composite cleaning agent, a reaction kettle is prepared, and the reaction kettle is at normal temperature and normal pressure.
C. Adding an emulsifying agent into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then stirring for 10 minutes by a manual or stirring machine;
the three materials of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate are uniformly mixed with catalytic diesel oil and C9 aromatic hydrocarbon added before, and are emulsified to form stable emulsion liquid for finishing oil scale cleaning.
In this embodiment, the step C includes:
(1) Adding oleic acid diethanolamide into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then stirring for 20 minutes by a manual or stirring machine;
(2) Adding polypropylene glycol 1000 dioleate into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then stirring for 15 minutes by a manual or stirring machine;
(3) The polyoxyethylene oleate is added into a reaction kettle while controlling the addition speed so as to keep the temperature of the reaction kettle within a preset temperature range, and then stirred manually or by a stirrer for 10 minutes.
The oleic acid diethanolamide, the polypropylene glycol 1000 dioleate and the polyoxyethylene oleate can be added into the reaction kettle according to any arrangement sequence.
D. Adding 15-crown ether-5 into a reaction kettle, stirring for 10 minutes by a manual or stirrer, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
adding sodium persulfate into a reaction kettle, stirring for 20 minutes by a manual or stirrer, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
the main effect of 15-crown-5 is chelation, and 15-crown-5 can form stable complex with metal salts, ammonium salts, etc. to dissolve various salts in organic solvents, so 15-crown-5 must be added before sodium persulfate.
Through adding oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate, under the emulsification of three materials, sodium persulfate can be dissolved with the emulsion which is formed stably before through 15-crown ether-5 to obtain the composite cleaning agent, and the cleaning agent is beneficial to improving the cleaning efficiency of ferrous sulfide passivation, deodorization and oil scale removal processes.
F. Ending the stirring process, checking the pH value of the prepared product, and packaging the product when the pH value of the product is 6-9.
In this embodiment, the preset temperature range is 50-70 degrees, preferably 60 degrees, and in the preparation steps D-E of the compound cleaning agent, there is a heating reaction, so the adding speed of each component is controlled by monitoring the temperature of the reaction kettle, so as to control the reaction kettle to keep at 60 degrees, that is, when the temperature rises to over 60 degrees, the adding speed of the corresponding component is slowed down, so that the temperature of the reaction kettle is controlled to keep around 60 degrees as much as possible in the preparation process of the compound cleaning agent, and the temperature of the reaction kettle is prevented from being too high in the preparation process, so that the pressure of the reaction kettle is prevented from rising.
After the composite cleaning agent is prepared, the composite cleaning agent is injected into petrochemical equipment in the shutdown cooling oil transportation process, so that the composite cleaning agent and the oil phase in the equipment circulate together, and the one-step cleaning process of ferrous sulfide passivation, deodorization and oil scale removal can be completed.
Example 3:
the embodiment is a specific implementation mode corresponding to the embodiment 2, namely, the composite cleaning agent comprises the following components in proportion: 42% of catalytic diesel oil, 40% of C9 aromatic hydrocarbon, 5-14% of 15-crown ether, 1% of sodium persulfate, 1.5% of oleic acid diethanolamide, 0.5% of polypropylene glycol 1000 dioleate and 1% of polyoxyethylene oleate.
The preparation steps in the embodiment 2 are adopted to prepare the composite cleaning agent by proportioning, the composite cleaning agent is injected into petrochemical equipment in the shutdown cooling oil transportation process, the composite cleaning agent and the oil phase in the equipment are circulated together, and the one-step cleaning of ferrous sulfide passivation, deodorization and oil scale removal is completed.
Table 1 device cleaning index comparison List
Conclusion: the composite cleaning agent has the descaling rate of 98%, the corrosion rate of 0, the passivation and deodorization effects are excellent, and the concentration of hydrogen sulfide gas in the cleaned equipment is 2mg/m 3 、NH 3 Is 2mg/m 3 The descaling rate is higher than that of a single oil scale cleaning agent (descaling rate 96%), and the passivation and deodorization effects are better than those of a single passivation and deodorization agent (the concentration of hydrogen sulfide gas in the cleaned equipment is 3 mg/m) 3 、NH 3 Is 4mg/m 3 ) The corrosion rate is 0, no damage is caused to equipment, and the oil dirt cleaning agent and the passivation deodorant are used for two-step cleaning, and the corrosion rate is 0.8.
Example 4:
the embodiment is a specific implementation mode corresponding to the embodiment 2, namely, the composite cleaning agent comprises the following components in proportion: 48% of catalytic diesel oil, 36% of C9 aromatic hydrocarbon, 5-crown ether-5, 12% of sodium persulfate, 2% of oleic acid diethanolamide, 0.8% of polypropylene glycol 1000 dioleate and 1% of polyoxyethylene oleate.
The preparation steps in the embodiment 2 are adopted to prepare the composite cleaning agent by proportioning, the composite cleaning agent is injected into petrochemical equipment in the shutdown cooling oil transportation process, the composite cleaning agent and the oil phase in the equipment are circulated together, and the one-step cleaning of ferrous sulfide passivation, deodorization and oil scale removal is completed.
Table 2 device cleaning index comparison List
Compared with the prior art, the composite cleaning agent in the application, which is commonly used in the industry at present, is adopted in the tables 2 and 3, the oil dirt removal cleaning agent and the passivation deodorization cleaning agent are used in two steps, the cleaning test is carried out on petrochemical equipment with the same content of two groups of sulfur substances and the same deposition state of oil dirt, the liquid collecting areas of the two groups of equipment are respectively sampled and analyzed, and the cleaning test process is completed after the two groups of samples reach the same quality index, so that the obtained comparison data of the cleaning time are obtained.
Specifically, in the above cleaning test, the specific proportions of the composite cleaning agent used in the present application are: 48% of catalytic diesel oil, 36% of C9 aromatic hydrocarbon, 5-crown ether-5, 12% of sodium persulfate, 2% of oleic acid diethanolamide, 0.8% of polypropylene glycol 1000 dioleate and 1% of polyoxyethylene oleate (example 4).
The oil dirt removing cleaning agent and the passivation deodorizing cleaning agent adopted in the cleaning scheme of the comparative example in two steps are respectively as follows: oil stain cleaning agent (commercially available oil stain cleaning agent RFC-2), and passivating deodorant (commercially available passivating deodorant LQS-98). Tables 2 and 3 list test results for verifying cleaning effect, cleaning efficiency and reducing sewage discharge using the above-described cleaning test.
TABLE 3 comparison of washing time and sewage amount Table
Note that: the sewage discharge amount is 10-15% of the equipment volume, and the equipment volume of the test is 20m, so the sewage discharge amount is about 2 tons.
The test data in table 3 shows that, since the preparation time before passivation and deodorization and the drain time after cleaning are respectively 36h and 2h, which are required for the two steps of degreasing and passivation and deodorization, respectively, the sum of the consumed time of the two steps of degreasing and passivation and deodorization is 18h, and the total time is 56 h, which is 48h more than the cleaning time of 8h of the composite cleaning agent.
It can be obtained that under the condition of achieving the same cleaning effect, the method for cleaning the oil dirt by adopting the compound cleaning agent to finish passivation, deodorization and oil dirt removal in one step saves 2 days compared with the two-step cleaning.
Meanwhile, according to table 2, it can be seen that the cleaning effect of oil removal and the cleaning effect of passivation and deodorization are optimal, and the corrosion rate to equipment is the lowest.
As shown in tables 1, 2 and 3, the composite cleaning agent provided by the application, the oil dirt cleaning agent commonly used in industry at present and used in two steps, and the passivation deodorizing cleaning agent are adopted, and after the oil dirt is cleaned, the descaling effect of the composite cleaning agent provided by the application is optimal.
On the other hand, the cleaning effect of passivation and deodorization is measured by detecting H 2 Concentration of S and NH 3 The compound cleaning agent has the best passivation effect and the lowest corrosion rate to equipment.
It can be seen that the test results of using the composite cleaning agent for cleaning and using the passivation deodorizing cleaning agent and the oil dirt removing cleaning agent step by step show that the cleaning process of the composite cleaning agent has a good cleaning effect compared with the cleaning process of using the common cleaning agent step by step, the cleaning time is long and short, the cleaning time is effectively saved, the production and operation efficiency of equipment is improved, and the economic benefit is higher.
By combining the above, the compound cleaning agent provided by the application can realize the compatibility of sodium persulfate and an oil phase solvent for removing oil dirt, so that three cleaning actions of ferrous sulfide passivation, deodorization and oil dirt removal can be completed in one step when the compound cleaning agent is used for cleaning equipment, the cleaning time is effectively shortened, the sewage amount generated by cleaning is reduced, and the problems of overlong cleaning time consumption in step cleaning in different states of equipment and large sewage emission caused by ferrous sulfide passivation and deodorization by using an aqueous phase cleaning agent in the prior art are solved.
While the application has been described in terms of preferred embodiments, the application is not limited to the embodiments described herein, but encompasses various changes and modifications that may be made without departing from the scope of the application.
The embodiments and features of the embodiments described herein can be combined with each other without conflict.
The above disclosure is only a preferred embodiment of the present application, and it is needless to say that the scope of the application is not limited thereto, and therefore, the equivalent changes according to the claims of the present application still fall within the scope of the present application.
Claims (5)
1. The ferrous sulfide passivation deodorization and oil scale cleaning composite cleaning agent for cleaning petrochemical equipment is characterized by comprising catalytic diesel oil, C9 aromatic hydrocarbon, 15-crown ether-5, passivation deodorant and an emulsifying agent, wherein the catalytic diesel oil, the C9 aromatic hydrocarbon, the 15-crown ether-5 and the passivation deodorant are respectively prepared from the following components in percentage by mass: 20-60% of catalytic diesel oil, 20-60% of C9 aromatic hydrocarbon, 10-30% of 15-crown ether-5, 0.5-2% of passivation deodorant and 1.02-15% of emulsifier;
the passivation deodorant is sodium persulfate and/or potassium persulfate;
the emulsifier is one or more of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate.
2. The ferrous sulfide passivation deodorizing and oil dirt cleaning compound cleaning agent for petrochemical equipment cleaning according to claim 1, wherein when the emulsifying agent consists of three materials of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate, the mass percentages of oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate in the cleaning agent are respectively 0.01-5%,0.01-5% and 1-5%.
3. The preparation method of the ferrous sulfide passivation deodorization and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning is realized based on the component proportion of the ferrous sulfide passivation deodorization and oil dirt cleaning compound cleaning agent applied to petrochemical equipment cleaning according to claim 1, and is characterized by comprising the following steps:
A. the raw materials are accurately weighed based on the mass percentages of the components: catalytic diesel, C9 aromatics, 15-crown ether-5, passivation deodorant and emulsifier;
B. adding catalytic diesel and C9 aromatic hydrocarbon into a reaction kettle;
C. adding an emulsifying agent into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
D. adding 15-crown ether-5 into a reaction kettle, fully stirring, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
E. adding the passivation deodorant into a reaction kettle, fully stirring, and controlling the temperature of the reaction kettle within a preset temperature range in the stirring process;
F. ending the stirring process, checking the pH value of the prepared product, and packaging the product when the pH value of the product is 6-9.
4. The method for preparing the composite cleaning agent for passivating and deodorizing ferrous sulfide and cleaning oil dirt, which is applied to cleaning petrochemical equipment, according to claim 3, wherein the emulsifying agent consists of three materials, namely oleic acid diethanolamide, polypropylene glycol 1000 dioleate and polyoxyethylene oleate, and the mass percentages of the three materials in the cleaning agent are respectively 0.01-5%,0.01-5% and 1-5%.
5. The method for preparing the composite cleaning agent for passivating, deodorizing and cleaning oil dirt by ferrous sulfide applied to cleaning petrochemical equipment according to claim 4, wherein the step C comprises the following steps:
(1) Adding oleic acid diethanolamide into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
(2) Adding polypropylene glycol 1000 dioleate into a reaction kettle, controlling the adding speed at the same time so as to keep the temperature of the reaction kettle within a preset temperature range, and then fully stirring;
(3) Adding polyoxyethylene oleate into a reaction kettle, controlling the adding speed at the same time, keeping the temperature of the reaction kettle within a preset temperature range, and then fully stirring.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6310022B1 (en) * | 1999-11-30 | 2001-10-30 | Biogenesis Enterprises, Inc. | Chemical cleaning solution for gas turbine blades |
| CN107557794A (en) * | 2017-09-01 | 2018-01-09 | 南京高威表面技术有限公司 | Circular regeneration type ferrous sulfide deactivation, the deodorization of sulphur ammonia amine, the three-in-one cleaning agent of anti-austenitic stainless steel Polythionic acid stress corrosion |
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| BR112019005766A2 (en) * | 2016-09-26 | 2019-06-18 | Baker Hughes A Ge Co Llc | metal sulfide removal process and composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6310022B1 (en) * | 1999-11-30 | 2001-10-30 | Biogenesis Enterprises, Inc. | Chemical cleaning solution for gas turbine blades |
| CN107557794A (en) * | 2017-09-01 | 2018-01-09 | 南京高威表面技术有限公司 | Circular regeneration type ferrous sulfide deactivation, the deodorization of sulphur ammonia amine, the three-in-one cleaning agent of anti-austenitic stainless steel Polythionic acid stress corrosion |
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