CN105195134A - Catalyst for deodorizing mineral oil and preparation method and use method of catalyst - Google Patents
Catalyst for deodorizing mineral oil and preparation method and use method of catalyst Download PDFInfo
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- CN105195134A CN105195134A CN201510532876.5A CN201510532876A CN105195134A CN 105195134 A CN105195134 A CN 105195134A CN 201510532876 A CN201510532876 A CN 201510532876A CN 105195134 A CN105195134 A CN 105195134A
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Abstract
The invention relates to a catalyst for deodorizing mineral oil and a preparation method and use method of the catalyst, and belongs to the field of oxidation sweetening. According to the catalyst for deodorizing mineral oil, a nonmetallic mineral serves as a carrier, a compound catalytic system formed by Mn2+ or Mn2+ and M metal ions serves as active components, and M is at least one of Zn, Pb, Cu, Ni and Co. The capacity of the active components ranges from 0.01% to 1% by metal. The catalyst for deodorizing mineral oil is low in cost, good in desulfuration effect and environmentally friendly.
Description
Technical field
The present invention relates to a kind of mineral oil deodorizing catalyst and preparation and application thereof, belong to field of oxidative desulphurization.
Background technology
Due to geological environment and biological chemistry action, at most of oil product, and all contain mercaptan in waste mineral oil reconstituted product.Sulfide in oil product can be divided into active sulfide and inactive sulfur compound by its chemical property.Wherein active sulfide has hydrogen sulfide, elementary sulfur and mercaptan; Inactive sulfur compound has thioether, thiophene and disulphide or polysulfide.Sulphur compound in light fuel, generally based on mercaptan, accounts for more than 50% of total sulfur content.1), low-grade thioalcohol foul smelling taste mercaptan is that a kind of organosulfur compound containing mercapto functional group has following characteristics:, poisonous; 2), mercaptan shows the corrosion that acidity can cause engine and fuel transfer system; 3), mercaptan can react with alkene and can accelerate the generation of fuel oil colloid, and as can be seen here, the existence of mercaptan has a strong impact on quality and the stability of oil product., usually need the Mercaptan removal in fuel oil in petroleum refining process for this reason, or be transformed into the less disulphide of harm (RSSR).Because mercaptan has stench, therefore in petroleum refining industry, usually again removal of mercaptans process is referred to as deodorising process.
Conventional deodour method has: deodour by adsorber method, Mei Luokesi (Merox) deodorization method, extraction process, catalytic oxidation, microbial method etc.But these deodour methods exist different defects, wherein, deodour by adsorber method, adsorbent amount is large, and very difficult containing oil adsorbent; Mei Luokesi (Merox) deodorization method, equipment investment are higher, are difficult to promote the use of at medium and small oil plant; Merox new technology, this technique introduces raw catelyst, and catalyst use cost is high.Economically consider with practicality aspect, at present with more be catalytic oxidation.The efficient mercaptan-eliminating catalyst fast of research, since coming out from light oil products deodorizing technique, the deodorization catalyst of development high activity, long-life, low price is one of theme of petroleum refining industry always.Copper chloride, sodium plumbite, histidine network cobalt, two salicylide ethylenediamine network cobalts, pyrophosphoric acid cobalt etc., but these catalyst are to the catalytic efficiency of mercaptan and selective not high.
Gleim and Urban in 1958 finds that the oxidation reaction of transistion metal compound to mercaptan of phthalocyanine has very high catalytic activity, thus has been introduced in the deodorizing technology of light-end products.From then on, Cobalt Phthalocyanine becomes good deodorant, after this derivative such as sulfonated phthalocyanine cobalt, solid base Cobalt Phthalocyanine is developed into, as taken charge of, west is strong waits that to disclose one with sulfonated phthalocyanine cobalt in " preparation of immobilized mercaptan-eliminating catalyst and performance thereof " document of report be catalytic active component, the solid-supported catalyst that the compositional liquor of solvent PFMD and dispersant is prepared as immersion solvent; Also disclose in " commercial Application of the novel preloading composite desulfate alcohol catalyst of HPA304 " of the Luo Ji report such as just and be a kind ofly carrier with special active fruit shell carbon, take sulfonated phthalocyanine cobalt as the composite desulfate alcohol catalyst of active component.US4206079 reports a kind of catalyst for mercaptol oxidization be made up of metal phthalocyanine and quaternary ammonium hydroxide, namely adopts the alcohol solution Immesion active carbon of metal phthalocyanine and quaternary ammonium hydroxide and makes.But Cobalt Phthalocyanine use cost is high, synthesis raw material cobalt that is comparatively difficult, that use contains radioactivity and toxicity, and dead catalyst difficult treatment etc., all limit the production and application of Cobalt Phthalocyanine and derivative thereof.Therefore, development cost is cheap, more efficiently, the chemical assistant of environmental protection, becomes the urgent problem solved for desulfurization.
Summary of the invention
The present invention is directed to above-mentioned defect, provide a kind of mineral oil deodorizing catalyst, this catalyst is with low cost, the good and environmental protection of desulfurized effect.
Technical scheme of the present invention:
First technical problem that the present invention will solve is to provide a kind of mineral oil deodorizing catalyst, and the carrier of catalyst is nonmetallic mineral, and active component is Mn
2+or Mn
2+the Complex catalyst system formed with M metal ion, M is at least one in Zn, Pb, Cu, Ni or Co; In metal, the load capacity of active component is 0.01 ~ 1%; Be preferably 0.05 ~ 1%; Be more preferably 0.1 ~ 1%.In the present invention, described load capacity refers to that active component is in metal, and metal accounts for the mass percent of catalyst total amount.
Preferably, the active component of described mineral oil deodorizing catalyst is Mn
2+.
Further, the carrier of described removal of mercaptans catalyst comprises quartz sand, Al
2o
3, carclazyte, sodium bentonite, calcium-base bentonite, silica gel or active carbon.
Further, described nonmetallic mineral is sodium bentonite, calcium-base bentonite or carclazyte.
Preferred, described nonmetallic mineral is calcium-base bentonite or sodium bentonite; Be more preferably calcium-base bentonite.
Second technical problem that the present invention will solve is to provide the preparation method of above-mentioned mineral oil deodorizing catalyst: be dissolved in deionized water by active component raw material, then described carrier is added, under normal temperature, normal pressure, stirring reaction to carrier loaded active component reaches capacity, and filters, is drying to obtain mineral oil deodorizing catalyst; Wherein, active component raw material is water soluble salt containing active component or alkali.
Further, described active component raw material is manganese sulfate, manganese nitrate or manganese chloride.
Further, stir under normal temperature, normal pressure 10 ~ 60 hours (being preferably 50 hours), baking temperature is 105 ~ 120 DEG C.
The 3rd technical problem that the present invention will solve is to provide the using method of above-mentioned mineral oil deodorizing catalyst, catalyst system and catalyzing is mixed to form by mineral oil deodorizing catalyst and alkali lye, then by catalyst system and catalyzing with treat that the oil product of deodorization mixes, blowing air stirs at least 5min (being preferably 5 ~ 25min), wherein, the proportion relation of catalyst and alkali lye is: use 0.02-0.06g catalyst in every 100ml alkali lye, the weight ratio of catalyst system and catalyzing and oil product is 10 ~ 100 ︰ 100; Wherein, air mass flow is 2 ~ 3L/min.
In above-mentioned using method, described alkali lye is sodium hydroxide solution or potassium hydroxide solution, and the mass concentration of described alkali lye is 5 ~ 20% (being preferably 10%).
Beneficial effect of the present invention:
Traditional mercaptan-eliminating catalyst is Cobalt Phthalocyanine and derivative thereof, Cobalt Phthalocyanine is organic compound poisonous and harmful, and catalyst of the present invention is on the screening basis of great many of experiments, adopt conventional chemical synthesis process, the organic catalyst of preparation nonhazardous, environmental protection; It is loaded catalyst, and described active component is the composite Bimetallic catalyst system of Mn or Mn and other metallic elements; Described carrier is nonmetallic mineral.Present device drops into low.The catalyst that modification nonmetallic mineral provided by the invention is oxidized as mercaptan catalyst, can be used for removing the mercaptan in the diesel regenerated and gasoline of mineral oil, mineral oil, condensate.
Detailed description of the invention
First technical problem that the present invention will solve is to provide a kind of mineral oil deodorizing catalyst, and the carrier of catalyst is nonmetallic mineral, and active component is Mn
2+or Mn
2+the Complex catalyst system formed with M metal ion, M is at least one in Zn, Pb, Cu, Ni or Co; In metal, the load capacity of active component is 0.01 ~ 1%; Be preferably 0.05 ~ 1%; Be more preferably 0.1 ~ 1%.In the present invention, described load capacity refers to that active component is in metal, and metal accounts for the mass percent of catalyst total amount.
Preferably, the active component of described mineral oil deodorizing catalyst is Mn
2+.
Further, the carrier of described removal of mercaptans catalyst comprises quartz sand, Al
2o
3, carclazyte, sodium bentonite, calcium-base bentonite, silica gel or active carbon.
Further, described nonmetallic mineral is sodium bentonite, calcium-base bentonite or carclazyte.
Preferred, described nonmetallic mineral is calcium-base bentonite or sodium bentonite; Be more preferably calcium-base bentonite.
Bentonite, also known as bentonite, amargosite etc., containing a small amount of feldspar, quartz, beidellite, calcite and pyroclastic tephra.Main chemical compositions is SiO
2, Al
2o
3and a small amount of Fe
2o
3, MgO, CaO, K
2o, Na
2o and TiO
2deng.Bentonitic interlayer cation kind determines bentonitic type, and interlayer cation is Na
+time claim sodium bentonite; Interlayer cation is Ca
2+time claim calcium-base bentonite.
Second technical problem that the present invention will solve is to provide the preparation method of above-mentioned mineral oil deodorizing catalyst: be dissolved in deionized water by active component raw material, then described carrier is added, under normal temperature, normal pressure, stirring reaction to carrier loaded active component reaches capacity, and filters, is drying to obtain mineral oil deodorizing catalyst; Wherein, active component raw material is water soluble salt containing active component or alkali.
Further, described active component raw material is manganese sulfate, manganese nitrate or manganese chloride.
Further, stir under normal temperature, normal pressure 10-60 hour (being preferably 50 hours), baking temperature is 105-120 DEG C.
Further, sieve after drying.
The 3rd technical problem that the present invention will solve is to provide the using method of above-mentioned mineral oil deodorizing catalyst, catalyst system and catalyzing is mixed to form by mineral oil deodorizing catalyst and alkali lye, then by catalyst system and catalyzing with treat that the oil product of deodorization mixes, blowing air stirs at least 5min (being preferably 5 ~ 25min), wherein, the proportion relation of catalyst and alkali lye is: use 0.02-0.06g catalyst in every 100ml alkali lye, the weight ratio of catalyst system and catalyzing and oil product is 10 ~ 100 ︰ 100; Wherein, air mass flow is 2 ~ 3L/min.
In above-mentioned using method, described alkali lye is sodium hydroxide solution or potassium hydroxide solution, and the mass concentration of described alkali lye is 5 ~ 20 (being preferably 10%).
The use of catalyst is as following equation:
The invention provides purposes and the using method of the catalyst that modification nonmetallic mineral is oxidized as mercaptan catalyst, belong to chemical field.The technical problem that the present invention solves is to provide modification nonmetallic mineral as the purposes of mercaptan-eliminating catalyst and using method.The catalyst that modification nonmetallic mineral provided by the invention is oxidized as mercaptan catalyst, can be used for removing the mercaptan in the diesel regenerated and gasoline of mineral oil, mineral oil, condensate, and described modification nonmetallic mineral is using load variable valency metal element as activity unit.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.
In the embodiment of the present invention, use and derive from Sichuan oil plant containing mercaptan tar, in oil, mercaptans content is 0.17% (completing with reference to GB/T1792-1988 " in distillate fuel mercaptan sulfur determination method (potentiometric titration) ").
The synthesis of embodiment 1 catalyst and use
The preparation of mineral oil deodorizing catalyst:
In this embodiment, active component is Mn
2+carrier is calcium-base bentonite, concrete preparation method is: by the manganese sulfate of 34g, be dissolved in 200ml deionized water, add 10g calcium-base bentonite, stirring reaction 50h under normal temperature, normal pressure, filter, in 105 DEG C of oven dry, ground 150 mesh sieves, obtain mineral oil deodorizing catalyst (load capacity is 0.5%).
The use of catalyst: get the above-mentioned catalyst of 0.03g, adding 100ml mass concentration to is in the sodium hydrate aqueous solution of 10%, stirs, obtains catalytic liquid system; Then by catalytic liquid with treat that the ratio of deodorised oil in 1:4 mixes, pass into after air (air mass flow 2L/min) stirs 15min and filter, measure mercaptans content in oil product, result is as shown in table 1.Wherein, mercaptans content in oil after mercaptans content/desulfurization in oil after removal of mercaptans rate=desulfurization.
The synthesis of embodiment 2 catalyst and use
In this embodiment, active component is Mn
2+, carrier is sodium bentonite, and concrete preparation method is: by the manganese sulfate dissolving metal salts of 33.8g in 200ml deionized water, add 10g sodium bentonite, stirring reaction 50h under normal temperature, normal pressure, filter, in 105 DEG C of oven dry, ground 150 mesh sieves, obtain removal of mercaptans catalyst.
The use of catalyst: get the above-mentioned catalyst of 0.03g, adding 100ml mass concentration to is in the sodium hydrate aqueous solution of 10%, stirs, obtains catalytic liquid system; Then by catalytic liquid with treat that deodorised oil mixes by 1:4, pass into after air (air mass flow 3L/min) stirs 15min and filter, measure mercaptans content in oil product, result is as shown in table 1.
Embodiment 3-7
Raw materials and method are with embodiment 1, and just to account for the ratio of catalyst gross mass different for active component, its concrete ratio and gained removal of mercaptans rate as shown in table 1.
The result of use of table 1 embodiment and comparative example removal of mercaptans catalyst
Comparative example 2-6
In addition, we have selected Mn respectively
2+metal ion is in addition as active component, and concrete active component is as shown in table 2, and as shown in Table 2, when active component selects the metal ion of Pb, Ni, the removal of mercaptans rate of gained removal of mercaptans catalyst is lower; When active component is the metal ion of Zn, Co, Cu, removal of mercaptans rate is lower than 75%; And removal of mercaptans rate of the present invention can reach 92%.
Table 2 calcium bentonite load different valence variation element removal of mercaptans effect
| Comparative example | 2 | 3 | 4 | 5 | 6 |
| The active component of calcium bentonite load | Zn 2+ | Pb 4+ | Cu 2+ | Ni 2+ | Co 2+ |
| Removal of mercaptans rate (%) | 70.6 | 5.9 | 71.8 | 23.5 | 70.6 |
Embodiment 8-10
In addition, we are with Mn
2+as active component, select different carriers, preparation method is with embodiment 1, and the removal of mercaptans rate of gained catalyst is as shown in table 3.Visible, with Mn
2+during as active component, select bentonitic removal of mercaptans rate higher.
Table 3Mn loads to different nonmetallic mineral catalyst desulfurizing alcohol effect
| Embodiment | 7 | 8 | 9 |
| Different carriers load Mn | Quartz sand | Active carbon | Silica gel |
| Removal of mercaptans rate (%) | 29 | 24 | 12 |
In addition, we are with Mn
2+add different valence variation element Zn
2+, Pb
4+, Cu
2+, Ni
2+, Co
2+deng as active component, preparation method is with embodiment 1, and still having of gained catalyst is similar to Mn
2+as the removal of mercaptans rate of active component.
Claims (10)
1. mineral oil deodorizing catalyst, is characterized in that, the carrier of catalyst is nonmetallic mineral, and active component is Mn
2+or Mn
2+the Complex catalyst system formed with M metal ion, M is at least one in Zn, Pb, Cu, Ni or Co; In metal, the load capacity of active component is 0.01 ~ 1%.
2. mineral oil deodorizing catalyst according to claim 1, is characterized in that, the load capacity of active component is 0.05 ~ 1%; Be more preferably 0.1 ~ 1%.
3. mineral oil deodorizing catalyst according to claim 1 and 2, is characterized in that, the active component of described mineral oil deodorizing catalyst is Mn
2+.
4. the mineral oil deodorizing catalyst according to any one of claims 1 to 3, is characterized in that, described nonmetallic mineral comprises quartz sand, Al
2o
3, carclazyte, sodium bentonite, calcium-base bentonite, silica gel or active carbon.
5. mineral oil deodorizing catalyst according to claim 4, is characterized in that, described nonmetallic mineral is calcium-base bentonite, sodium bentonite or carclazyte.
6. mineral oil deodorizing catalyst according to claim 5, is characterized in that, described nonmetallic mineral is for being calcium-base bentonite.
7. the preparation method of mineral oil deodorizing catalyst described in any one of claim 1 ~ 6, it is characterized in that, active component raw material is dissolved in deionized water, then described carrier is added, under normal temperature, normal pressure, stirring reaction to carrier loaded active component reaches capacity, and filters, is drying to obtain mineral oil deodorizing catalyst; Wherein, active component raw material is water soluble salt containing active component or alkali; Preferably, described active component raw material is manganese sulfate, manganese nitrate or manganese chloride.
8. the preparation method of mineral oil deodorizing catalyst according to claim 7, is characterized in that, stir 10 ~ 60 hours under normal temperature, normal pressure, baking temperature is 105 ~ 120 DEG C; Preferably, stir 50 hours under normal temperature, normal pressure, baking temperature 105 DEG C.
9. the using method of mineral oil deodorizing catalyst, it is characterized in that, mineral oil deodorizing catalyst and alkali lye are mixed to form catalyst system and catalyzing, then by catalyst system and catalyzing with treat that the oil product of deodorization mixes, blowing air stirs at least 5min, wherein, the proportion relation of catalyst and alkali lye is: use 0.02 ~ 0.06g catalyst in every 100ml alkali lye, the weight ratio of catalyst system and catalyzing and oil product is 10 ~ 100 ︰ 100; Wherein, air mass flow is 2 ~ 3L/min; Described mineral oil deodorizing catalyst is mineral oil deodorizing catalyst described in any one of claim 1 ~ 6, or adopts method described in claim 7 or 8 to obtain.
10. the using method of mineral oil deodorizing catalyst according to claim 9, it is characterized in that, described alkali lye is sodium hydroxide solution or potassium hydroxide solution, and the mass concentration of described alkali lye is 5 ~ 20%; Blowing air mixing time is 5 ~ 25min.
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2015
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