CN106800951B - A kind of flue gas dirt matter dispersant and its preparation method - Google Patents
A kind of flue gas dirt matter dispersant and its preparation method Download PDFInfo
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- CN106800951B CN106800951B CN201710022123.9A CN201710022123A CN106800951B CN 106800951 B CN106800951 B CN 106800951B CN 201710022123 A CN201710022123 A CN 201710022123A CN 106800951 B CN106800951 B CN 106800951B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
- C10G75/02—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of corrosion inhibitors
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
- C10G75/04—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of antifouling agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/207—Acid gases, e.g. H2S, COS, SO2, HCN
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/208—Sediments, e.g. bottom sediment and water or BSW
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/80—Additives
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a kind of flue gas dirt matter dispersants, the dispersant is online uses, it includes organic solvent, surfactant, corrosion inhibiter, first oxidant, second oxidant and auxiliary agent, the organic solvent, the surfactant, the corrosion inhibiter, first oxidant, second oxidant and the auxiliary agent mix, wherein, the mass fraction of the organic solvent is 30 50 parts, the mass fraction of the surfactant is 15 18 parts, the mass fraction of the corrosion inhibiter is 10 17 parts, the mass fraction of first oxidant is 10 15 parts, the mass fraction of second oxidant is 6 10 parts, the mass fraction of the auxiliary agent is 5 10 parts.
Description
Technical field
The present invention relates to flue descalling technique fields, and in particular, to a kind of flue gas dirt matter dispersant and its preparation
A kind of method, more particularly, to flue gas dirt matter dispersant and its preparation method for catalytic cracking unit.
Background technology
Catalytic cracking unit is a kind of heat surplus and the more oil refining apparatus of high-grade energy.Energy regenerating is in energy saving
Effect it is very notable.Whole high-temperature residual heats such as regeneration fume from catalytic cracking, regenerator and cycle slurry oil are utilized to occur in recent years
Middle pressure steam, using 1.0MPa or 0.5MPa Back-pressure steams as technique or the side of full auxiliary steam after driving back pressure turbine acting
Method has received good energy-saving effect.
The charging of catalytic cracking unit is typically wax oil incorporation part reduced pressure residual oil or whole reduced crudes, these chargings
Containing higher carbon residue, heavy metal and it is difficult to the component cracked.In riser reactor, charging is contacted with auxiliary agent to be cracked
Reaction generates lighter hydrocarbons, such as gasoline, diesel oil and gas products etc..Simultaneously, it is difficult to which the component of cracking is condensed coke, coke laydown
Auxiliary agent is caused to lose activity on auxiliary agent surface.In order to make the auxiliary agent of inactivation regenerate, it is necessary to air is passed through into regenerator, to burn
The burnt matter for falling auxiliary agent surface, restores the activity of auxiliary agent.The heat come released in regeneration burning process, a part make auxiliary agent
Temperature is improved, provides the heat needed for cracking reaction, another part is taken away by flue gas, generates a large amount of high-temperature flue gas.
Contain auxiliary agent dust in regeneration high-temp flue gas, this there can be abrasion to smoke machine.Three rotations can be set before smoke machine, through three
Dust content after rotation separation is 0.2g/m3.The auxiliary agent granularity of dust that flue gas carries is thinner, wherein 90% or more dust grain
Degree<10 μm, but it is non-corrosive.Auxiliary agent dust makes heating surface generate dust stratification, and dust stratification is in loose shape, spreads entire boiler heating surface.
Regenerated flue gas contains sulfide SOx。SOxContent depends on charging sulfur content, contains in usual catalytically cracked stock
The sulphur of 0.3%~3.0% (mass fraction).The sulfur content of domestic fcc raw material oil usually≤1% (mass fraction), and is produced from the Middle East
The sulfur content of the fcc raw material oil of crude oil production is higher.Sulphur in feedstock oil exists in the form of organic sulfur compound.After cracked,
Sulphur about 50% in charging is with H2S-shaped formula enters gaseous product, and 40% enters fluid product, remaining 10% enters coke,
It is deposited on cracking additive.Sulphur in regenerator burning process in coke is oxidized to SO2And SO3, it is referred to as SOx, it is present in cigarette
In gas.By calculating it is found that when fcc raw material oil sulfur content is more than 0.5% (mass fraction), the SO in flue gasxJust reach
300 μ g/g or more.It is limited by reacting dynamics condition, the SO in flue gas3Typically constitute from SOx10% or less total amount.SO3It can carry
High flue gas dew point can form dilute sulfuric acid with the condensation water on low temperature heating surface, low-temperature corrosion is generated to heating surface metal.High temperature cigarette
After three rotation separation, most of auxiliary agent dust is removed gas, but a certain number of granularities are still remained in gas phase media<10 μm of poles
Thin auxiliary agent dust and SOxSour gas.Auxiliary agent dust make heating surface generate dust stratification, dust stratification be in loose shape, throughout entire boiler by
Hot face.SO3Flue gas dew point can be improved, dilute sulfuric acid can be formed with the condensation water on low temperature heating surface, heating surface metal is generated
Low-temperature corrosion.
Dust stratification on waste heat boiler can be divided into laxity and caking property dust stratification by its adhesion strength.The generation of laxity dust stratification
Only it is a physical process, as long as ensureing suitable heated face structure size and enough flowed energies, and coordinates if necessary just
Normal selective sootblowing etc. can control dust stratification pollution level in reasonable range.But pair simultaneously with physics, chemistry 2 kinds work
Caking property dust stratification, since dust stratification layer intensity is high, physical method is difficult to eliminate, and be easy to cause stifled ash.Low temperature bonding dust stratification
It is due to H2SO4、H2O is condensed on heating surface, hardens to be formed by low temperature with soot particle, the time effect and chemistry of process of hardening
Effect is so that deposit has higher adhesion strength, it is not easy to remove, cause the thermal loss of device and reduce device
Service life.
Invention content
It is an object of the present invention to provide a kind of new solutions of flue gas dirt matter dispersant.
According to the first aspect of the invention, a kind of flue gas dirt matter dispersant is provided.The dispersant is online use, packet
Include organic solvent, surfactant, corrosion inhibiter, the first oxidant, the second oxidant and auxiliary agent, the organic solvent, the table
Face activating agent, the corrosion inhibiter, first oxidant, second oxidant and the auxiliary agent mix, wherein institute
The mass fraction for stating organic solvent is 30-50 parts, and the mass fraction of the surfactant is 15-18 parts, the corrosion inhibiter
Mass fraction is 10-17 parts, and the mass fraction of first oxidant is 10-15 parts, the mass fraction of second oxidant
It it is 6-10 parts, the mass fraction of the auxiliary agent is 5-10 parts.
Optionally, the organic solvent is at least one in methanol, dimethylformamide, n-hexane, ethyl alcohol and ethylene glycol
Kind.
Optionally, the surfactant is at least one of fatty acid sorbitan, polysorbate and stearic acid.
Optionally, the corrosion inhibiter is at least one of molybdate, methenamine, thiocarbamide and LAN-826, wherein molybdenum
Hydrochlorate, methenamine and thiocarbamide add in form of an aqueous solutions, concentration of aqueous solution 1%-25%.
Optionally, first oxidant is at least one of sodium perborate and ammonium persulfate, second oxidant
For at least one of nitrate and hypochlorite, first oxidant and second oxidant add in form of an aqueous solutions
Add, a concentration of 1-20% of aqueous solution.
Optionally, the auxiliary agent is at least one of potassium chlorate and di-iron trioxide.
According to another aspect of the present invention, a kind of preparation method of flue gas dirt matter dispersant is provided.This method includes：
S1, the organic solvent, the surfactant and the corrosion inhibiter are mixed；
The first oxidant and the second oxidant is added dropwise in S2, the solution formed to S1 using the method for dropwise addition；
The auxiliary agent is added in S3, the solution formed to S2.
Optionally, the preparation temperature of the preparation method is 80-120 DEG C, preparation pressure 0.2-0.3Mpa.
Optionally, which carries out under inert gas protection, and dispersant obtained is in inert gas shielding
Under be packaged.
It was found by the inventors of the present invention that in the prior art, generally use physical method carries out the removing of flue gas dust stratification, stops
The stove time is long, influences to produce.Therefore, the technical assignment or the technical problem to be solved is that this fields that the present invention to be realized
It is that technical staff never expects or it is not expected that, therefore the present invention is a kind of new technical solution.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the flow chart of the preparation method of flue gas dirt matter dispersant according to the ... of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the chemicals dosing plant according to the ... of the embodiment of the present invention for flue gas dirt matter dispersant.
Reference sign：
10：Waste heat boiler；11：Exhaust gases passes；12：Dosing pipe；13：Dosing pump；14：Pharmacy slot；15：Valve.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
According to an embodiment of the invention, a kind of flue gas dirt matter dispersant is provided.The dispersant is online uses.That is, urging
Change cracking unit in the process of running, dispersant is ejected into exhaust gases passes by way of sprinkling.It is tried, is urged by this side
The addition of dispersant can be carried out without parking by changing cracking unit.The dispersant includes organic solvent, surfactant, inhibition
Agent, the first oxidant, the second oxidant and auxiliary agent, the organic solvent, the surfactant, the corrosion inhibiter, described
One oxidant, second oxidant and the auxiliary agent mix, wherein the mass fraction of the organic solvent is 30-
50 parts, the mass fraction of the surfactant is 15-18 part, and the mass fraction of the corrosion inhibiter is 10-17 parts, described first
The mass fraction of oxidant is 10-15 parts, and the mass fraction of second oxidant is 6-10 parts, the mass fraction of the auxiliary agent
It is 5-10 parts.
The dispersant is particularly suitable for the flue gas dispersion of the waste heat boiler of catalytic cracking unit, and flue gas is avoided to assemble to form product
Ash even fouling.
The dispersant is using online sprinkling, after dispersant is injected into high-temperature flue gas, the temperature by flue gas and kinetic energy moment
It realizes gasification and is mixed with the uniform of flue gas, worked rapid.
In addition, with the superfine catalysed soot in high-temperature flue gas eutectic or dispersant adsorption occur for dispersant in flue gas
On crystal surface, twist cell destroys crystallization behavior and orientation.The shape and size for changing crystal avoid intergranular bonding
Form tridimensional network.Continuously forming and developing for crystal is prevented, greatly reduces crystal in steam superheater, steam-generating bank
Dust stratification is formed with aggregation on economizer boiler tube.
In addition, the surfactant in dispersant, can remove tube skin, eliminate metal surface charge, impurity is prevented to exist
Adhere in furnace wall.Surfactant has wetting, osmosis to the dust stratification that waste heat boiler has been formed, to waste heat boiler tube wall
Dust stratification has removal effect, and does not influence the secondary use of high-temperature flue gas.
In addition, dispersant forms protective film in furnace wall, the substances such as catalysed soot and sour gas is prevented to contact boiler tube
Surface keeps the metal surface at the other positions of waste heat boiler device smooth.
In addition, dispersant can absorb acid gas in flue gas, acidic gas concentration is reduced, reaches corrosion mitigating effect, prevents
Spot corrosion occurs for tube wall.
In addition, the dispersion dosage added is micro, for example, flue gas flow is the flue of 200,000 sides/hour, point
Powder dosage is 1.8 ls/h.The dosage will not change flue gas composition and its physicochemical property, such as the temperature of flue gas, contain
Dirt, pressure, flow etc. will not more have an adverse effect to waste heat boiler normal operation.
In addition, containing rust inhibition component in dispersant, after waste heat boiler pipeline, protective effect can be generated to pipeline.
Optionally, the organic solvent be methanol, dimethylformamide, n-hexane, ethyl alcohol and ethylene glycol at least
It is a kind of.Above-mentioned organic solvent favorable dispersibility in flue gas, can be such that dispersant disperses rapidly, dispersant is rapid-action.
Optionally, the surfactant is at least one of fatty acid sorbitan, polysorbate and stearic acid.On
Stating surfactant can make dispersant be effectively adhered the inner surface of flue, and reduce the adhesive force of dust stratification.
Optionally, the corrosion inhibiter is at least one of molybdate, methenamine, thiocarbamide and LAN-826, wherein
Molybdate, methenamine and thiocarbamide add in form of an aqueous solutions, concentration of aqueous solution 1%-25%.LAN-826
Optionally, first oxidant is at least one of sodium perborate and ammonium persulfate, second oxidation
Agent is at least one of nitrate and hypochlorite, and first oxidant and second oxidant are in form of an aqueous solutions
Addition, a concentration of 1-20% of aqueous solution.Nitrate optionally potassium nitrate, sodium nitrate, zinc nitrate or calcium nitrate.Hypochlorous acid
Salt optionally, postassium hypochlorite, sodium hypochlorite or calcium hypochlorite.First oxidant and the second oxidant can be formed with hard scale
Low melting point eutectic, under flue-gas temperature effect, hard scale becomes loose easy peeling product.
Optionally, the auxiliary agent is at least one of potassium chlorate and di-iron trioxide.
According to another embodiment of the invention, a kind of preparation method of flue gas dirt matter dispersant is provided.This method packet
It includes：
S1, the organic solvent, the surfactant and the corrosion inhibiter are mixed；
The first oxidant and the second oxidant is added dropwise in S2, the solution formed to S1 using the method for dropwise addition；
The auxiliary agent is added in S3, the solution formed to S2.
The preparation method can form uniform dispersant, and avoid the solution excessive exothermic in mixed process.
Optionally, the preparation temperature of the preparation method is 80-120 DEG C, preparation pressure 0.2-0.3Mpa.In the condition
Under, each component of dispersant can dissolve each other rapidly.
Optionally, which carries out under inert gas protection, and dispersant obtained is protected in inert gas
It is packaged under shield.Under this condition, it can be effectively prevented the oxidation of the first oxidant and the second oxidant, dispersant can be made
Keep lasting dispersion effect.
Embodiment：
Certain oil plant, every year because catalytic cracked regenerated high-temperature flue gas heat recovery boiler dust stratification clear up caused by furnace outage time
It is 40 days.Waste heat boiler steam production is 50t/h.Due to blowing out so that steam production reduces 48000 tons, has seriously affected production.
Dispersant using the present invention is added online.As shown in Fig. 2, exhaust gases passes 11 lead to waste heat boiler 10.Add
Medicine device includes dosing pump 13 and pharmacy slot 14, and dosing pump 13 is connected together by pipeline and pharmacy slot 14.Dosing pump 13 is logical
Dosing pipe 12 is crossed to be connected to exhaust gases passes 11.Valve 15 is respectively arranged on dosing pipe 12 and exhaust gases passes 11 to control stream
Amount.Before dispersant is added into the entrance of flue 11 of waste heat boiler 10.For example, dosing pipe 12 entrance setting into
Before waste heat boiler 10 at 1-1.5 meters.Dosing pipe 12 uses DN15mm stainless steel tubes, and the trend of pipeline can be according to actual conditions
It is configured.In addition, in winter dosing when, dosing pipeline 12 is required plus heat tracing pipe and is kept the temperature.In order to reach better dosing effect
Fruit is provided with spray equipment (not shown) in the entrance of dosing pipe 12, and spray equipment can be such that dispersant spreads rapidly.
After dosing, by the residual temperature transient evaporation of flue gas, the dispersant after gasification flowing dispersant with flue gas
In uniformly mix, and enter waste heat boiler in.Dispersant in the gaseous state directly effectively inhibits the generation of the black dirt of waste heat boiler
And dispersion, so that dust stratification and fouling is greatly reduced, significantly extends the service life of waste heat boiler, greatly reduce blowing out number.
Used dispersant is configured according to preparation method provided by the invention.Such as：
Embodiment one：
Dispersant includes：30 parts of methanol, 15 parts of fatty acid sorbitan, 10 parts of 5% molybdate, 1% sodium peroxydisulfate 15
Part, 1% 10 parts of zinc nitrate, 5 parts of potassium chlorate.
Embodiment two：
Dispersant includes：50 parts of methanol, 18 parts of fatty acid sorbitan, 17 parts of 10% molybdate, 20% sodium peroxydisulfate
10 parts, 20% 10 parts of zinc nitrate, 10 parts of potassium chlorate.
Embodiment three：
Dispersant includes：40 parts of methanol, 16 parts of fatty acid sorbitan, 13 parts of 5% molybdate, 10% sodium peroxydisulfate 12
Part, 10% 11 parts of zinc nitrate, 7 parts of potassium chlorate.
Example IV：
Dispersant includes：30 parts of dimethylformamide, 16 parts of polysorbate, 13 parts of 10% molybdate, 10% over cure
12 parts of sour sodium, 10% 11 parts of zinc nitrate, 7 parts of potassium chlorate.
Embodiment five：
Dispersant includes：30 parts of dimethylformamide, 15 parts of fatty acid sorbitan, 10 parts of 5% molybdate, 1% mistake
15 parts of sodium sulphate, 1% 10 parts of pernitric acid sodium, 5 parts of potassium chlorate.
Embodiment six：
Dispersant includes：50 parts of dimethylformamide, 18 parts of fatty acid sorbitan, 17 parts of 10% molybdate, 20%
10 parts of sodium peroxydisulfate, 20% 10 parts of sodium nitrate, 10 parts of potassium chlorate.
Embodiment seven：
Dispersant includes：40 parts of dimethylformamide, 16 parts of fatty acid sorbitan, 13 parts of 5% molybdate, 10% mistake
12 parts of sodium sulphate, 10% 11 parts of sodium nitrate, 7 parts of potassium chlorate.
Embodiment eight：
Dispersant includes：30 parts of ethylene glycol, 16 parts of polysorbate, 13 parts of 10% molybdate, 10% sodium peroxydisulfate 12
Part, 10% 11 parts of sodium nitrate, 7 parts of potassium chlorate.
Embodiment nine：
Dispersant includes：30 parts of ethylene glycol, 15 parts of fatty acid sorbitan, 10 parts of 5% molybdate, 1% sodium peroxydisulfate
15 parts, 1% 10 parts of potassium nitrate, 5 parts of potassium chlorate.
Embodiment ten：
Dispersant includes：50 parts of ethylene glycol, 18 parts of fatty acid sorbitan, 17 parts of 10% molybdate, 20% persulfuric acid
10 parts of sodium, 20% 10 parts of potassium nitrate, 10 parts of potassium chlorate.
Embodiment 11：
Dispersant includes：40 parts of ethylene glycol, 16 parts of fatty acid sorbitan, 13 parts of 5% molybdate, 10% sodium peroxydisulfate
12 parts, 10% 11 parts of potassium nitrate, 7 parts of potassium chlorate.
Embodiment 12：
Dispersant includes：30 parts of dimethylformamide, 15 parts of stearic acid, 10 parts of 5% molybdate, 1% sodium peroxydisulfate
15 parts, 1% 10 parts of potassium per nitrate, 5 parts of potassium chlorate.
Embodiment 13：
Dispersant includes：50 parts of dimethylformamide, 18 parts of stearic acid, 17 parts of 10% molybdate, 20% persulfuric acid
10 parts of sodium, 20% 10 parts of zinc nitrate, 10 parts of potassium chlorate.
Embodiment 14：
Dispersant includes：40 parts of dimethylformamide, 16 parts of stearic acid, 13 parts of 5% molybdate, 10% sodium peroxydisulfate
12 parts, 10% 11 parts of zinc nitrate, 7 parts of potassium chlorate.
Embodiment 15：
Dispersant includes：30 parts of ethylene glycol, 16 parts of stearic acid, 13 parts of 10% molybdate, 12 parts of 10% sodium peroxydisulfate,
10% 11 parts of zinc nitrate, 7 parts of potassium chlorate.
Embodiment 16：
Dispersant includes：30 parts of ethylene glycol, 15 parts of stearic acid, 10 parts of 5% molybdate, 15 parts of 1% sodium peroxydisulfate,
1% 10 parts of zinc nitrate, 5 parts of potassium chlorate.
Embodiment 17：
Dispersant includes：50 parts of ethylene glycol, 18 parts of stearic acid, 17 parts of 10% molybdate, 10 parts of 20% sodium peroxydisulfate,
20% 10 parts of zinc nitrate, 10 parts of potassium chlorate.
Embodiment 18：
Dispersant includes：40 parts of ethylene glycol, 16 parts of stearic acid, 13 parts of 5% molybdate, 12 parts of 10% sodium peroxydisulfate,
10% 11 parts of zinc nitrate, 7 parts of potassium chlorate.
Embodiment 19：
Dispersant includes：30 parts of methanol, 15 parts of fatty acid sorbitan, 10 parts of 5% molybdate, 1% sodium peroxydisulfate 15
Part, 1% 10 parts of potassium nitrate, 5 parts of di-iron trioxide.
Embodiment 20：
Dispersant includes：50 parts of methanol, 18 parts of fatty acid sorbitan, 17 parts of 10% molybdate, 20% sodium peroxydisulfate
10 parts, 20% 10 parts of potassium nitrate, 10 parts of di-iron trioxide.
Embodiment 21：
Dispersant includes：40 parts of methanol, 16 parts of fatty acid sorbitan, 13 parts of 5% molybdate, 10% sodium peroxydisulfate 12
Part, 10% 11 parts of potassium nitrate, 7 parts of di-iron trioxide.
Embodiment 22：
Dispersant includes：30 parts of dimethylformamide, 16 parts of polysorbate, 13 parts of 10% molybdate, 10% over cure
12 parts of sour sodium, 10% 11 parts of potassium nitrate, 7 parts of di-iron trioxide.
In another embodiment, corrosion inhibiter uses the methenamine aqueous solution or 1%- of LAN826,1%-25%
25% thiourea solution.
In another embodiment, organic solvent uses n-hexane or ethyl alcohol.
Number in above-described embodiment is mass fraction.
After the dispersant of above-described embodiment, the waste heat boiler cycle of operation significantly extends, the blowing out inspection caused by dust stratification
Accident is repaiied, the annual furnace outage time for clearing up flue gas dust stratification is 6-12 days, greatly reduces the production loss caused by blowing out.
Medicament corrosion inhibition for metal effect also extremely strong while deashing can greatly prolong waste heat boiler unit, mating
The service life of equipment and component.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (8)
1. a kind of flue gas dirt matter dispersant, which is characterized in that the dispersant is online use, i.e., catalytic cracking unit was being run
Dispersant is ejected into exhaust gases passes by Cheng Zhong by way of sprinkling, including organic solvent, surfactant, corrosion inhibiter,
One oxidant, the second oxidant and auxiliary agent, the organic solvent, the surfactant, the corrosion inhibiter, first oxidation
Agent, second oxidant and the auxiliary agent mix, and first oxidant is in sodium perborate and ammonium persulfate
At least one, second oxidant are at least one of nitrate and hypochlorite, first oxidant and described the
Dioxy agent is added in form of an aqueous solutions, a concentration of 1-20% of aqueous solution, wherein the mass fraction of the organic solvent is
30-50 parts, the mass fraction of the surfactant is 15-18 parts, and the mass fraction of the corrosion inhibiter is 10-17 parts, described
The mass fraction of first oxidant is 10-15 parts, and the mass fraction of second oxidant is 6-10 parts, the quality of the auxiliary agent
Number is 5-10 parts.
2. flue gas dirt matter dispersant according to claim 1, which is characterized in that the organic solvent is methanol, dimethyl
At least one of formamide, n-hexane, ethyl alcohol and ethylene glycol.
3. flue gas dirt matter dispersant according to claim 1, which is characterized in that the surfactant is aliphatic acid sorb
At least one of smooth, polysorbate and stearic acid.
4. flue gas dirt matter dispersant according to claim 1, which is characterized in that the corrosion inhibiter is molybdate, Wu Luotuo
At least one of product, thiocarbamide and LAN-826, wherein molybdate, methenamine and thiocarbamide add in form of an aqueous solutions, water
Solution concentration is 1%-25%.
5. flue gas dirt matter dispersant according to claim 1, which is characterized in that the auxiliary agent is potassium chlorate and three oxidations two
At least one of iron.
6. a kind of preparation method of flue gas dirt matter dispersant, which is characterized in that
S1, organic solvent, surfactant and corrosion inhibiter are mixed；
It is added dropwise the first oxidant and the second oxidant in S2, the solution formed into S1 steps using the method for dropwise addition, described
One oxidant is at least one of sodium perborate and ammonium persulfate, and second oxidant is in nitrate and hypochlorite
At least one, first oxidant and second oxidant add in form of an aqueous solutions, a concentration of 1- of aqueous solution
20%；
Auxiliary agent is added in S3, the solution formed into S2 steps；
Wherein, the mass fraction of the organic solvent is 30-50 parts, and the mass fraction of the surfactant is 15-18 parts, institute
The mass fraction for stating corrosion inhibiter is 10-17 parts, and the mass fraction of first oxidant is 10-15 parts, second oxidant
Mass fraction be 6-10 part, the mass fraction of the auxiliary agent is 5-10 parts；The dispersant is online use, i.e. catalytic cracking fills
It sets in the process of running, dispersant is ejected into exhaust gases passes by way of sprinkling.
7. preparation method according to claim 6, which is characterized in that the preparation temperature of the preparation method is 80-120 DEG C,
Preparation pressure is 0.2-0.3Mpa.
8. preparation method according to claim 6, which is characterized in that the preparation method is to carry out under inert gas protection
, dispersant obtained is packaged under inert gas protection.
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| CN103468420A (en) * | 2013-08-20 | 2013-12-25 | 李从波 | Weak acid cleaner and application thereof to removal of GGH (gas-gas heater) hard scale |
| CN105483718A (en) * | 2016-01-19 | 2016-04-13 | 博罗县东明化工有限公司 | Wash-whitening and descaling liquid and die-casting aluminum alloy pretreatment method |
| CN106051799A (en) * | 2016-06-02 | 2016-10-26 | 田新松 | Cleaning method for efficient descaling of convection section of oil field boiler |
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| CN103215153B (en) * | 2013-03-27 | 2015-03-11 | 国家电网公司 | Scale remover of flue gas reheater in flue gas desulfurization system |
| CN104560460A (en) * | 2015-01-27 | 2015-04-29 | 重庆莘苒化工科技有限公司 | High-efficiency descaling agent |
| CN104746091A (en) * | 2015-04-28 | 2015-07-01 | 深圳市崇辉表面技术开发有限公司 | Cast aluminum alloy white washing descaling solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103468420A (en) * | 2013-08-20 | 2013-12-25 | 李从波 | Weak acid cleaner and application thereof to removal of GGH (gas-gas heater) hard scale |
| CN105483718A (en) * | 2016-01-19 | 2016-04-13 | 博罗县东明化工有限公司 | Wash-whitening and descaling liquid and die-casting aluminum alloy pretreatment method |
| CN106051799A (en) * | 2016-06-02 | 2016-10-26 | 田新松 | Cleaning method for efficient descaling of convection section of oil field boiler |
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