CN106987856A - A kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application - Google Patents
A kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application Download PDFInfo
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- CN106987856A CN106987856A CN201710207192.7A CN201710207192A CN106987856A CN 106987856 A CN106987856 A CN 106987856A CN 201710207192 A CN201710207192 A CN 201710207192A CN 106987856 A CN106987856 A CN 106987856A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
Abstract
The invention discloses a kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application, cleaning agent of the present invention includes following materials in percentage by mass：Surfactant 6.3%~10.4%, natural fatty alcohol and ethylene oxide polymer 8.5%~14.0%, antirust agent 1%~3%, complexing agent 0.1%~0.2%, water surplus, each component sum is 100%.Gas phase cleaning agent of the present invention, show bubble when using, water consumption is few, and cleaning performance is more preferable, safer.Using the preferable mobility of steam, reach each corner of device, easily show to contact with cleaned, even if it is internal it is very complicated also do not stay dead angle, purification is thorough.The achievable cleaning of the present invention, deodorization, passivation are once completed.The hydrogen sulfide in ferrous sulfide spontaneous combustion and removing system can be effectively prevented, equipment corrosion rate is low, and product is disposable, biological degradability 100%, more environmentally friendly, safety.
Description
Technical field
The present invention relates to a kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application, belong to oil
Chemical technology field.
Background technology
In industrial petrochemical industry production, oil refining production is main using atmospheric and vacuum distillation unit and the follow-up dress of deep processing
Put, such as cracking of ethylene, catalytic cracking, delayed coking, aromatic hydrocarbons joint, hydrofinishing device.These equipment air, environment,
In the contact processes such as raw materials for production, medium, product, machinery oil, due to occurring physics, chemistry, electrochemistry or the effect of biology,
In its remained on surface, deposit and generate various to production run, product quality or health of human body harmful pollutants or coating,
Here it is industrial soils.Thus the dirty problem of generally existing grease and Jiao in petrochemical iy produced.Including deposition silt dirt, oil transportation in petroleum tank
Duct wall sticks grease, the phenomenon such as greasy filth, coking coking of air compressor machine oil piping system etc..The generation of grease and burnt dirt, can make pipe
Wall thermal-conduction resistance increase, equipment running process energy consumption increase, service life of equipment shortens, meanwhile, dirty layer also makes the pipe in equipment
Road internal diameter diminishes, and Flow of Goods and Materials pressure drop increase, yield reduction, the operation cycle shortens, has a strong impact on production, be that this must be carried out clearly
Remove dirt.Cleaning technique is to ensureing that petrochemical equipment safety, normal, high-efficiency operation have important practical significance.
The cleaning agent commonly used currently for such oil foulant has alkaline aqueous solution, but big to mineral oil dirt removal ability
It is more poor, daily degreaser can only be done；Organic solvent, commonly uses petroleum solvents, halogenated hydrocarbon solvent and alcohols solvent etc., though to oil
Dirty dissolubility is good, but inflammable, volatile and poisonous, should use with caution.Surfactant solution, with surface tension is reduced, wetting is oozed
Thoroughly, the unique effect such as emulsion dispersion and solubilising, there is good Scavenging activity to liquid grease, but poor to solid-state grease removal ability.
And the increasingly raising of the requirement with environmental protection, conventional cleaning agent is due to needing to discharge a certain amount of oil-polluted water and this part contains
Oily water needs just send outside after being demulsified, and difficulty is larger.
When being cleaned at present using such product technology, cleaning fluid skewness and the low factor of flow rate of liquid are present
Scavenging period is long, the problems such as cleaning not thorough.And cleaning, passivation will be carried out step by step, long construction period, energy waste is big.Cleaning
Liquid discharge can also bring influence to environmental protection.
The content of the invention
To overcome the shortcoming of currently available technology, it is an object of the invention to provide a kind of gas phase cleaning agent, the cleaning agent
Show bubble when using, water consumption is few, and cleaning performance is more preferable, safer.Using the preferable mobility of steam, device is reached each
Individual corner, purification is thorough.And product is disposable, biological degradability 100%.
To achieve the above object, the technical solution adopted by the present invention is that a kind of gas phase for petrochemical equipment cleaning is cleaned
Agent, includes the raw material of following mass percent：Surfactant 6.3%~10.4%, natural fatty alcohol and ethylene oxide polymerization
Thing 8.5%~14.0%, antirust agent 1%~3%, complexing agent 0.1%~0.2%, water surplus, each component sum is 100%.
The surfactant is dodecylbenzyl ammonium chloride, ten alkyl-dimethyl epoxide amine oxides, dodecyldimethylamine
One or more of mixing in base amine oxide, dimethyl epoxide amine oxide, myristyl benzyl ammonium chloride；
The natural fatty alcohol is with ethylene oxide polymer in aliphatic acid polyethenoxy ether, AEO
One or two kinds of mixing；
The antirust agent is the mixing of one or both of trihydroxy ethylamine oleate soap, BTA；
The complexing agent is the mixing of one or both of the sodium of EDTA tetra-, EDETATE SODIUM.
Further, in addition to Sodium Dimethyldithiocarbamate 0.2%~0.4%.
Preferably, the present invention is a kind of is used for the gas phase cleaning agent that petrochemical equipment is cleaned, and each component is by mass percentage：
Dimethyl epoxide amine oxide 6.3%~10.4%, AEO 8.5%~14.0%, triethanolamine oil
Sour soap 1%~3%, the sodium 0.1%~0.2% of EDTA tetra-, water surplus, each component sum is 100%.
Further, a kind of to be used for the gas phase cleaning agent that petrochemical equipment is cleaned, each component is by mass percentage：12
Alkyl-dimethyl epoxide amine oxide 7.3%~10.4%, AEO 10.4%~14.0%, trihydroxy ethylamine oleate soap
The sodium 0.1%~0.2% of 2%~3%, EDTA tetra-, Sodium Dimethyldithiocarbamate 0.2%~0.4%, water surplus, each component sum is 100%.
The preparation method of the gas phase cleaning agent is：In tuner, each component raw material weighed in proportion is sequentially added,
Under high velocity agitation it is well mixed it, if necessary appropriate heating, the former agent of cleaning agent is produced after examining and fully dissolving each other.Fill 200L
Finished barrel, sealing preserve.
Gas phase cleaning agent of the present invention is mixed in use, take the former agent of a certain amount of cleaning agent to be diluted with water to 2~5% solution
Equipment entrance to be cleaned is injected into pneumatic diaphragm pump afterwards, is gasified by instant steam and is brought into whole equipment to be washed and carry out equipment
Cleaning and Passivation.
Specific cleaning operation process：
1st, equipment to be washed (tower, tank, heat exchanger etc.) is isolated from whole system.
2nd, material, oil gas in emptying equipment.
3rd, the valve that equipment connects flare line is opened.
4th, steam valve is opened, logical steam is warming up to 115 ± 10 DEG C.
5th, pneumatic diaphragm pump discharge is connected into check valve with pipeline, and connected with equipment road to be washed woods.
6th, road woods valve is opened, starts membrane pump, cleaning agent is injected.
7th, injection rate is adjusted, is controlled in 300~500L/h.
8th, injection cleaning agent was sampled after 3~4 hours every 1 hour.
9th, sample point is equipment end to be washed condensate drain mouthful.
10th, quaternary ammonium salinity in lime set is detected with special test paper.
11st, when in lime set quaternary ammonium salt can be detected, sampling interval be half an hour once.
12nd, when detecting that quaternary ammonium salinity reaches 300~400ppm, represent that cleaning terminates.
13rd, scavenging period 6~12 hours.
14th, cleaning raffinate blowdown pond.
Gas phase cleaning agent of the present invention can be used for atmospheric and vacuum distillation unit, catalysis, coking plant, all kinds of hydrogenation plants, aromatic hydrocarbons, sewage
Stripper plant, various pipes etc., and all kinds of coolers, heat exchanger, all kinds of towers, container etc., catalytic cracking unit, aromatic hydrocarbons
(PX) device, hydrogenation plant oil storage tank and cooler, heat exchanger etc..
The present invention has the advantages that：
(1) cleaning performance is good.Gas phase cleaning agent of the present invention is made up of surfactant, complexing agent, bleeding agent etc., and is added
There is mild oxidation material, realize cleaning, deodorization, be passivated and once complete.Easily show to contact with cleaned, even if interior
Portion's very complexity does not also stay dead angle.
(2) water consumption is few.Gas phase cleaning agent show bubble under certain process conditions is injected into equipment to be cleaned,
And the density of foam is low, therefore water consumption is few.
(3) equipment corrosion rate is low.To carbon steel equipment corrosion rate≤1g/m when using2·h；To stainless steel, copper equipment without corruption
Erosion.Far below cleaning industry standard (HG/T2387-2007《Industry cleaning link quality standard》) 6g/m2·h。
(4) safety.Gas phase cleaning agent pH value of the present invention neutral (6-7), it is nonpoisonous and tasteless, non-ignitable it is not quick-fried, using safety, can have
Effect prevents the hydrogen sulfide in ferrous sulfide spontaneous combustion and removing system.
(5) it is easy to use.In equipment flowsheet cleaning process, do not neutralize, do not rinse, not Passivation Treatment, cleaning blowdown liquid
Sewage farm can be directly discharged into without after-treatment.
Brief description of the drawings
Fig. 1 and Fig. 2 is that Guangzhou petrochemical industry branch company refines oil four Hydrogenation of Coker Gasoline device fractionating column T8301 cleaning aftereffect
Really.
Fig. 3 and Fig. 4 are respectively that Guangzhou petrochemical industry branch company refines oil four Hydrogenation of Coker Gasoline device feedstock oil surge tanks and low
Press effect after separator cleaning.
Fig. 5 is north refinery branch company of Jin Hua chemical industry limited company product purification, acidic water stripping device is done
Effect after the cleaning of desulfurization Tower System.
Fig. 6 and Fig. 7 is north refinery branch company of Jin Hua chemical industry limited company product purification, sewage stripping dress
Put effect after the cleaning of gas holder desulfurization Tower System.
Fig. 8 and Fig. 9 is north refinery branch company of Jin Hua chemical industry limited company product purification, sewage stripping dress
Put effect after soul water stripper cleaning systems.
Figure 10 is north refinery branch company of Jin Hua chemical industry limited company product purification, acidic water stripping device ammonia
Effect after treating column cleaning systems.
Embodiment
With reference to embodiment and accompanying drawing, explanation is further explained to technical solution of the present invention.It is following to implement
Mode is only used for explaining of the invention, and the non-limiting scope of the present invention.The method of the invention, unless otherwise instructed, be
This area conventional method.Involved chemical reagent, unless otherwise instructed, is commercially obtained in the present invention.
Embodiment 1. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
Dimethyl epoxide amine oxide 10%
AEO 12%
Trihydroxy ethylamine oleate soap 2.5%
The sodium 0.1% of EDTA tetra-
Sodium Dimethyldithiocarbamate 0.3%
Water surplus (supply 100%).
In tuner, each component raw material weighed in proportion is sequentially added, is under high velocity agitation well mixed it, must
Suitably heated when wanting, 200L finished barrels, sealing preserve are filled after examining and fully dissolving each other.
Embodiment 2. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
CH3-(CH2)13N(CH3)2-O 9%
AEO 11.0%
BTA 2.5%
EDETATE SODIUM 0.2%
Water surplus (supply 100%)
Preparation method be the same as Example one.
Embodiment 3. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
Dodecylbenzyl ammonium chloride 7.3%
Aliphatic acid polyethenoxy ether：AEO=1:1 14.0%
Trihydroxy ethylamine oleate soap 3%
The sodium 0.2% of EDTA tetra-
Water surplus (supply 100%)
Preparation method be the same as Example one.
Embodiment 4. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
CH3-(CH2)13N(CH3)2-O：Dimethyl epoxide amine oxide=2:1 8%
AEO 12.0%
Trihydroxy ethylamine oleate soap：BTA=1：3 2.8%
The sodium of EDTA tetra-：EDETATE SODIUM=1:1 0.1%
Water surplus (supply 100%)
Preparation method be the same as Example one.
Embodiment 5. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
Myristyl benzyl ammonium chloride 9%
AEO 11.0%
Trihydroxy ethylamine oleate soap 2.5%
EDETATE SODIUM 0.2%
Water surplus (supply 100%)
Preparation method be the same as Example one.
Embodiment 6. it is a kind of for petrochemical equipment clean gas phase cleaning agent, each component by mass percentage,
Dimethyl epoxide amine oxide 10.3%
AEO 10.4%
Trihydroxy ethylamine oleate soap 2%
The sodium 0.1% of EDTA tetra-
Sodium Dimethyldithiocarbamate 0.4%
Water surplus (supply 100%).
Preparation method be the same as Example one.
The detection of test example one, COD, BOD and rate of corrosion
Weapon industry nonmetallic materials Physico-chemical tests center is sent by the sample of Example 1 and Example 2 of the present invention, is carried out
COD, BOD and rate of corrosion detection, establishing criteria is, COD：GB11914-89；BOD：GB7488-87；Rate of metal corrosion：GB/
Rate of metal corrosion and corrosion total amount measure-gravimetric method in T25147-2010 industrial equipment Chemical cleanings；The testing result such as institute of table 1
Show.
Gas phase cleaning agent COD, the BOD of the present invention of table 1. and rate of corrosion testing result
It can be seen that to carbon steel equipment corrosion rate≤1g/m when gas phase cleaning agent of the present invention is used2·h；To stainless steel equipment almost
It is corrosion-free.Far below cleaning industry standard (HG/T2387-2007《Industry cleaning link quality standard》) 6g/m2·h。
The detection of test example two, descaling rate
Gas phase cleaning agent prepared by embodiment 1-6, carries out scale removal experiment, and testing result is shown in Table 2.
The gas phase cleaning agent descaling rate testing result of the present invention of table 2.
Industry cleaning link application examples one：Guangzhou petrochemical industry branch company refines oil four Hydrogenation of Coker Gasoline device gas phase Cleaning applications
Guangzhou petrochemical industry branch company refines oil four Hydrogenation of Coker Gasoline devices due to long-time production run, there are problems that
Need to carry out shut-down (breakdown) mainteance defect elimination, to ensure safety inspection, the device is carried out using gas phase Cleaning and Passivation technology of the present invention blunt
Change cleaning.
First, brief introduction
Device, which stops work to enter, steams the tower stage, removes residual hydro carbons using reagent, then deodorization, passivation, vulcanizes in cancellation element
The harmful substances such as ferrous and hydrogen sulfide, mercaptan.Because reagent is directly added into steam, with the cleaning equipment that purges steam, phase is distributed
To uniform, wastewater discharge is small, saves downtime, with the obvious advantage compared to more other cleanings and passivating technique.Using the present invention
The cleaning agent of embodiment 1, makes cleaning process more thorough, efficient, environmentally friendly.
The agent is a kind of surfactant for being dissolved in water, can remove the residual hydrocarbon thing in process equipment, can be in water
It is middle by hydrocarbons microemulsified, and the hydrogen sulfide and ferrous sulfide of gentle oxidation removal residual can also reduce all kinds of gases
LEL, without inorganic constituents and can be dissolved completely in water and very biodegradable.
2nd, washing and cleaning operation process
Cleaning requirement condition：Cleaning equipment carries out material returned displacement first, is purged followed by steam, keeps internal temperature
Degree is at 115 ± 10 DEG C, and device interior pressure is tried one's best reduction, and injection is completed to facilitate.July 26, device reached chemical cleaning project bar
Part, starts injection medicament and carries out washing and cleaning operation, be fully completed within 28th July.According to the different characteristics of equipment, injection cleaning is formulated
Scheme.Injection is carried out using pneumatic diaphragm pump, the outlet pressure of each injection point is adjusted, it is ensured that medicament can at the uniform velocity inject steam
Blow line, medicament reaches each corner of cleaning equipment with steam, does not stay dead angle, reaches optimal cleaning effect.According to dress
Shut-down and steam blowing plan arrangement are put, liquid phase cleaning partial devices proceed by construction operation morning in July 30, and in evening
Cleaning and Passivation task is completed when 19, device is surrendered.
3rd, cleaning process is controlled
Onsite application Hydrion paper QT-10 special test papers analyze cleaning performance.Sampling analysis uses proprietary examination
Paper is detected, after medicament injects three hours, is detected every 1-3 hours in injection dot system end, and control is remaining
It is qualified that reagent numerical value is considered as in 300-400ppm.
4th, analysis result information list
The relief liquor analysis result of cleaning process see the table below 3.
The analysis report list of table 3.
5th, application effect
1st, the equipment after cleaning is exposed in air, and FeS dieselings do not occur, open the ordorless smell of equipment；
2nd, corrosion is not caused to equipment, human body is not damaged, equipment and personal security are protected well；
3rd, cleaning process is not run, emitted, leaking cleaning fluid phenomenon；
4th, equipment is clean after cleaning, without a large amount of remaining greasy filth, cleaning agent；
5th, gas in container sampling analysis result after manhole is opened qualified；
6th, the cleaning waste liquid indices produced reach discharge standard, greatly reduce the pressure to sewage treatment plant, save
The work of processing maintenance waste water has been gone, efficiency is improved.
7th, gas phase cleaning technique greatly reduces cleaning wastewater discharge, is that sewage-treatment plant reduces very big processing
Pressure, meets environmental requirement.
8th, equipment cleaning performance：
Fractionating column T8301 cleaning after effect as depicted in figs. 1 and 2.Effect is as shown in Figure 3 after the cleaning of feedstock oil surge tank.
Effect is as shown in Figure 4 after low pressure separator cleaning.
6th, using summary
Hydrogenation of Coker Gasoline device has this time used gas phase cleaning technique of the present invention, and flow is flexibly, simple to operate, with dress
Washing and cleaning operation is passivated during putting progress steam blowing, scavenging period shortens, and cleaning fluid discharge amount greatly reduces, and cleans
Effect preferably, has accomplished that maintenance discharge of wastewater is up to standard, has saved a large amount of cost for wastewater treatment, reached the purpose of environment-friendly high-efficiency.
It is summarized as follows：
1st, gas phase cleaning process washing and cleaning operation different from the past, carries out cleaning work simultaneously during device steam blowing
Industry, saves a large amount of repair times, makes maintenance more efficient；
2nd, ordorless in whole cleaning process and dieseling occurs, and opens after manhole, and it is qualified to analyze, and has reached bar of getting angry
Part, has saved the cost of overhaul, has reached the purpose of safety and environmental protection；
3rd, under severe Environmental Protection Situation, this device, which stops work to clean, has used relatively advanced gas phase cleaning technique, fills
Put cleaning thoroughly, without dead angle, cleaning performance is preferable；
4th, a large amount of cleaning waste water produced after liquid phase cleaning, and the every analysis indexes symbol of cleaning relief liquor are avoided after cleaning
Sewage drainage standard is closed, while sewage-treatment plant pressure is reduced, discharge and the place of maintenance waste water are also reduced for device
Difficulty is managed, chemical cleaning technique makes maintenance safer, more environmentally friendly；
5th, this time Chemical cleaning effect is greatly improved, and has obtained consistent accreditation.
Industry cleaning link application examples two：Northern refinery branch company of Jin Hua chemical industry limited company product purification, acidity
Water stripper plant gas phase Cleaning application
Northern Hua Jin chemical industry limited company refinery branch company product purification and acidic water stripping device are over the years
During shut-down, device faces the problems such as heat exchange process length, heat transmission equipment are more, shut-down purging difficulty is big, steam consumption is big, behaviour
Make difficulty big.In the maintenance stage, the danger that spontaneous combustion occurs for ferrous sulfide present in tower inner pressurd vessel is higher, it is necessary to be passivated
Reaction removes ferrous sulfide.In order to eliminate the effects of the act, it is ensured that the safe efficient operation of device, gas phase cleaning technique of the present invention is utilized
Cleaning and Passivation is carried out to device.
First, brief introduction
Device, which stops work to enter, steams the tower stage, removes residual hydro carbons using reagent, then deodorization, passivation, vulcanizes in cancellation element
The harmful substances such as ferrous and hydrogen sulfide, mercaptan.Because reagent is directly added into steam, with the cleaning equipment that purges steam, phase is distributed
To uniform, wastewater discharge is small, saves downtime, with the obvious advantage compared to more other cleanings and passivating technique.Using Xin Benfa
The bright cleaning agent of embodiment 6, makes cleaning process more thorough, efficient, environmentally friendly.
The agent is a kind of surfactant for being dissolved in water, can remove the residual hydrocarbon thing in process equipment, can be in water
It is middle by hydrocarbons microemulsified, and the hydrogen sulfide and ferrous sulfide of gentle oxidation removal residual can also reduce all kinds of gases
LEL, without inorganic constituents and can be dissolved completely in water and very biodegradable.
2nd, washing and cleaning operation process
Cleaning requirement condition：Cleaning equipment is purged using steam in advance, keeps internal temperature at 115 ± 10 DEG C, if
Standby internal pressure is tried one's best reduction, and injection is completed to facilitate.Device reaches chemical cleaning project condition during 29 days 20 June, starts to add when 22
Material is cleaned.According to the different characteristics of equipment, injection cleaning program is formulated.Injection is carried out using pneumatic diaphragm pump, adjustment is each
The outlet pressure of individual injection point, it is ensured that medicament can at the uniform velocity inject steam blowing pipeline, medicament reaches cleaning equipment with steam
Each corner, does not stay dead angle, reaches optimal cleaning effect.Whole workshop cleaning process completed Cleaning and Passivation when 3 days 21 July
Task, device is surrendered.
3rd, cleaning performance is assessed
1st, after gas phase cleaning terminates, equipment opens manhole and ferrous sulfide spontaneous combustion does not occur, reaches passivation effect, well
The safety of equipment during ensureing to overhaul.
2nd, gas phase is cleaned, using the preferable mobility of steam, reaches each corner of device, can be accomplished compared with liquid phase cleaning
It is uniformly distributed, purifies thoroughly.Cleaning terminates to open equipment manhole, and operator carries the detection of four-in-one detecting instrument, and hydrogen sulfide contains
Measure as 0, fuel gas content is 0, and ordorless taste, equipment visibility has reached that people enters vessel safety checking maintenance to metal true qualities
The condition of operation.
3rd, Cleaning and Passivation is cleaned using gas phase, and the pollutants such as passivating wastewater are not produced, alleviates sewage treatment load, purging
The ordorless taste in scene, obtains good environment protecting.
4th, leakage of medicament do not occur for cleaning process, purging everywhere do not reveal by seal point, it was demonstrated that gas phase cleaning technique
Good security.
The special test papers of onsite application Hydrion paper QT-1 0 analyze cleaning performance.Sampling analysis uses proprietary examination
Paper is detected, after medicament injects three hours, is detected every 1-3 hours in injection dot system end, and control is remaining
It is qualified that reagent numerical value is considered as in 300-400ppm.
4th, process control and analysis result information
1st, this cleaning sets altogether 4 medicament decanting points, specific decanting point and consumption such as table 4 below：
The decanting point of table 4. and consumption
2nd, dry gas desulfurizing tower cleaning systems analysis result
It is shown in Table 5.
The dry gas desulfurizing tower network analysis result of table 5.
Note：Temperature is only able to display 104 DEG C in the workshop display instrument failure, tower
Cleaning performance is as shown in Figure 5.
3rd, gas holder desulfurization Tower System cleaning analysis result
It is shown in Table 6.
The gas holder desulfurization Tower System of table 6. cleans analysis result
Note：Temperature is only able to display 104 DEG C in the workshop display instrument failure, tower
Cleaning performance is as shown in Figure 6 and Figure 7.
4th, soul water stripper cleaning systems analysis result
It is shown in Table 7
The soul water stripper cleaning systems analysis result of table 7.
Note：Temperature is only able to display 104 DEG C in the workshop display instrument failure, tower
Equipment cleaning performance is as shown in Figure 8 and Figure 9.
5th, ammonia refining Tower System cleaning analysis result
As a result shown in table 8.
The ammonia refining Tower System of table 8. cleans analysis result
Cleaning performance is as shown in Figure 10.
5th, application effect
1st, the equipment after cleaning is exposed in air, and FeS dieselings do not occur, open the ordorless smell of equipment；
2nd, corrosion is not caused to equipment, sealing position leakage does not occur, human body is not damaged, protects set well
Standby and personal security；
3rd, cleaning process is not run, emitted, leaking cleaning fluid event；
4th, equipment is clean after cleaning, and without a large amount of remaining hydro carbons, cleaning agent, can see equipment true qualities；
5th, gas in container sampling analysis result is qualified after opening manhole, can be directly reached after ventilation into manhole operation bar
Part.
6th, summarize
Northern Hua Jin chemical industry limited company refinery branch company product purification and acidic water stripping device were stopped work
Gas phase cleaning technique of the present invention is used in journey, flexibly, simple to operate, process safety is controlled for flow, same in device purge
Step passivation, has saved the plenty of time.Using the good mobility of steam, along with the performance that special agent is excellent, reach very
Good passivation effect, and whole process only produces a small amount of condensate liquid, saves a large amount of cost for wastewater treatment, has reached environment-friendly high-efficiency
Purpose.It is summarized as follows：
1st, whole cleaning process total time is about three days, saves a large amount of repair times, makes maintenance more efficient；
2nd, ordorless in whole cleaning process and dieseling occurs, and opens after manhole, and it is qualified to analyze, and has reached bar of getting angry
Part, has saved the cost of overhaul, has reached the purpose of safety and environmental protection；
3rd, under severe Environmental Protection Situation, device uses advanced gas phase cleaning technique, using closed purging technology, purging
During ordorless gas overflowing, the bad feedback of device employee is not received；
4th, a large amount of waste water are not produced after cleaning, and condensate liquid is nontoxic, does not increase sewage disposal system burden, gas phase is clear
The technology of washing makes maintenance safer, more environmentally friendly.
Claims (10)
1. a kind of gas phase cleaning agent cleaned for petrochemical equipment, it is characterized in that, include the raw material of following mass percent：Surface
Activating agent 6.3%~10.4%, natural fatty alcohol and ethylene oxide polymer 8.5%~14.0%, antirust agent 1%~3%, network
Mixture 0.1%~0.2%, water surplus, each component sum is 100%.
2. the gas phase cleaning agent cleaned as claimed in claim 1 for petrochemical equipment, it is characterized in that, the surfactant is
Dodecylbenzyl ammonium chloride, ten alkyl-dimethyl epoxide amine oxides, CH3-(CH2)13N(CH3)2-O, dimethyl epoxide
One or more of mixing in amine oxide, myristyl benzyl ammonium chloride.
3. as claimed in claim 1 for petrochemical equipment clean gas phase cleaning agent, it is characterized in that, the natural fatty alcohol with
Ethylene oxide polymer is the mixing of one or both of aliphatic acid polyethenoxy ether, AEO.
4. the gas phase cleaning agent cleaned as claimed in claim 1 for petrochemical equipment, it is characterized in that, the antirust agent is three second
The mixing of one or both of hydramine oleate soap, BTA.
5. the gas phase cleaning agent cleaned as claimed in claim 1 for petrochemical equipment, it is characterized in that, the complexing agent is EDTA
The mixing of one or both of four sodium, EDETATE SODIUM.
6. it is used for the gas phase cleaning agent that petrochemical equipment is cleaned as described in claim 1-5, it is characterized in that, in addition to Sodium Dimethyldithiocarbamate
0.2%~0.4%.
7. the gas phase cleaning agent cleaned as claimed in claim 6 for petrochemical equipment, it is characterized in that, each component presses quality percentage
Than being calculated as：Dimethyl epoxide amine oxide 7.3%~10.4%, AEO 10.4%~14.0%, three
Monoethanolamine oleate soap 2%~3%, the sodium 0.1%~0.2% of EDTA tetra-, Sodium Dimethyldithiocarbamate 0.2%~0.4%, water surplus, each group divides it
With for 100%.
8. the method for any described gas phase cleaning agents for being used for petrochemical equipment cleaning of claim 1-7 is prepared, it is characterized in that,
In tuner, each component raw material weighed in proportion is sequentially added, is under high velocity agitation well mixed it, it is appropriate if necessary to add
Heat, produces the former agent of cleaning agent after examining and fully dissolving each other.
9. any described gas phase cleaning agent the answering in petrochemical equipment cleaning cleaned for petrochemical equipment of claim 1-8
With, it is characterized in that, in use, taking the former agent of a certain amount of cleaning agent to use pneumatic diaphragm after being diluted with water to 2~5% solution, mixing
Pump is injected into equipment entrance to be cleaned, is gasified by instant steam and brings the Cleaning and Passivation that whole equipment to be washed carries out equipment into.
10. application as claimed in claim 9, it is characterized in that, the vapor (steam) temperature is 115 ± 10 DEG C；The cleaning agent injection
During equipment to be cleaned, speed control is in 300~500L/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207192.7A CN106987856A (en) | 2017-03-31 | 2017-03-31 | A kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207192.7A CN106987856A (en) | 2017-03-31 | 2017-03-31 | A kind of gas phase cleaning agent cleaned for petrochemical equipment and its preparation and application |
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| CN109825838A (en) * | 2019-04-10 | 2019-05-31 | 上海福岛新材料科技有限公司 | A kind of high cleanliness metal cleaner and the method prolonged its service life |
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| CN109825838A (en) * | 2019-04-10 | 2019-05-31 | 上海福岛新材料科技有限公司 | A kind of high cleanliness metal cleaner and the method prolonged its service life |
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Application publication date: 20170728 |