CN102863984B - Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon - Google Patents
Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon Download PDFInfo
- Publication number
- CN102863984B CN102863984B CN201210410110.6A CN201210410110A CN102863984B CN 102863984 B CN102863984 B CN 102863984B CN 201210410110 A CN201210410110 A CN 201210410110A CN 102863984 B CN102863984 B CN 102863984B
- Authority
- CN
- China
- Prior art keywords
- catalytic cracking
- attapulgite
- heavy oil
- aromatic hydrocarbon
- cracking heavy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon. The method comprises the steps of highly diffusing attapulgite into the alcohol-containing alkaline solution to obtain size; adding the size into the pumping aromatic oil as a refining agent; heating and reflowing, and then releasing pressure to obtain the refined oil. Compared with the prior art, the method is high in controllability of the preparation condition, simple and convenient in operation, and high in stability of the refined oil.
Description
Technical field
The present invention relates to catalytic cracking heavy oil, especially relate to a kind of method improving catalytic cracking heavy oil extraction aromatic hydrocarbon oil stability.
Background technology
Catalytic cracking (FCC) process is one of important means of light materialization of heavy oil, and catalytic cracking heavy oil refers to catalytic cracking recycle oil, reprocessed oil slurry or externally extracting oil, and its major ingredient is the stable hydrocarbon of aromatic hydrocarbons and easy cracking.A large amount of commercial practice and research work show, mink cell focus aromatic hydrocarbons is the undesirable components in catalytically cracked material.Catalytic cracking heavy oil is adopted to the method for solvent extraction, the stable hydrocarbon Returning catalyticing cracking device of the easy cracking of extracting gained, takes out remaining heavy aromatic oil and fully utilizes.
But as secondary processing product, compound containing a large amount of alkene, aromatic hydrocarbons and sulphur, nitrogen, oxygen in catalytic cracking heavy oil, sulphur, nitrogen, the compound of oxygen and metal is concentrated again in the heavy aromatic oil obtained after solvent extraction, these components are all the active ingredients of oxidation, condensation reaction, thus heavy aromatic oil (FCCHA) stability is poor, heat, light, air all can affect its stability, the very fast blackening of color in put procedure, when making industrial chemicals, color crosses dark and instability becomes main drawback, affects use value.For this reason, need, according to the character of destabilization component wherein, to adopt suitable separation method remove portion destabilization component, study and explore the key point that effective decoloring method is developing heavy aromatic oil purposes.
The stability of oil product is poor, is not generally caused separately by certain component, but the coefficient result of these destabilization components, namely its interactional impact is more much bigger than the impact of one-component.Coexisting of multiple destabilization component, for reacting to each other between them provides condition: mutually provide releaser, provides reactant and catalytic specie mutually.Therefore, with regard to the stability improving oil product, unnecessaryly remove all destabilization components, remove component Parts stability being affected to most critical, improve its stability, developing heavy aromatic oil purposes is the object of work.
The work improving oil stability is divided into hydrofining and non-hydrogenation two kinds at present, hydrogenating desulfurization effect is better, but have and report confirmation in a large number, after removing sulfocompound, the stability of oil product is deteriorated, because the on the one hand stablizer of a small amount of sulfocompound inherently oil product, the increase of the condensed-nuclei aromatics compounds amount in addition with saturated rings after hydrogenation can affect stability; Non-hydrogenation has the features such as equipment is simple, one-time investment is few, refining expense is low, processing ease, is particularly suitable for middle-size and small-size refinery.The operational condition of non-hydrogenation comparatively relaxes mostly, generally carry out under normal temperature, normal pressure, therefore equipment used can be the existing equipment in refinery or it be transformed slightly, thus greatly save facility investment, although conventional at present non-hydrogenation method soda finishing method, acid treating method, acid-alkali refining method, refining with adsorbents method etc. can improve the stability that catalytic cracking heavy oil extracts aromatic hydrocarbons out to a certain extent, effect is not good.
Summary of the invention
The raising catalytic cracking heavy oil that the object of the invention is to provide a kind of method simple, effective to overcome defect that above-mentioned prior art exists extracts the method for stability of aromatic hydrocarbon out.Its feature comprises the preparation of composite precision preparation and refining two portions of oil product.
Finishing agent is the alkaline slurry containing attapulgite, by finishing agent according to 1: 5 ~ 50 ratio join catalytic cracking heavy oil and extract out in aromatic hydrocarbons, under the protection of nitrogen, stir, reflux 0.5 ~ 3 hour, then carry out underpressure distillation and obtain refined oil.
During described backflow, water trap need be added.
Described attapulgite is the attapulgite that the attapulgite content obtained after purifying containing attapulgite clay is greater than 95%.
Described attapulgite needs the slurries becoming high dispersing through ultrasonic high force dispersion in alkaline solution, and shared weight ratio is 2 ~ 50%.
Described alkaline solution be containing 2 ~ 10% sodium hydroxide or sodium carbonate solution.
Described alkaline solution solvent is the alcohol water mixed solvent containing ethanol or methyl alcohol 1 ~ 10%.
The pressure of described underpressure distillation is 1 ~ 30mmHg.
Attapulgite is a kind of attapulgite clay, attapulgite has nano bar-shape structure, can be used as sorbent material, common using method joins in oil product by its solid, its nanometer rod is agglomerated into large cluster or agglomerate, when causing use, its large specific surface does not play a role, and adsorption efficiency is extremely low.Catalytic cracking heavy oil extracts aromatic hydrocarbon oil out, and viscosity is large, and in traditional refining with adsorbents operation, sorbent material will more difficultly play a role.
The present invention compared with prior art tool has the following advantages:
1) in finishing agent containing the attapulgite with adsorptive power, its to polar compound particularly nitride have adsorptive power well.The ultrasonic method high force dispersion of attapulgite is formed slurries in alkali lye, attapulgite is in the basic conditions by absorption and ion-exchange, the negative electricity that surface lotus is a large amount of, not easily sedimentation is assembled after its high dispersing, both be of value to the finishing agent prepared can stablize and deposit, also can play the effect of its bigger serface better.
2) treating process adopts stirring and refluxing, the composition in finishing agent can be made to contact with oil product better, a small amount of ethanol is added in solvent, heavy arene oil viscosity can be reduced, make the destabilization composition reaction fully and in oil product of sorbent material, alkali, improve the degree of depth of adsorption efficiency and soda finishing, destabilization component and finishing agent can be reacted the component separating immiscible with water generated by added water trap.
3) last underpressure distillation separates the process of treated oil, both the alcohol can having removed destabilization component and finishing agent in treating process reacts the low-boiling point material generated, steaming along with solvent in the process of decompression, the relative quantity of alkali in oil product is increasing gradually, is conducive to acidic substance farthest and alkali reaction.
Embodiment
Embodiment 1
A kind of method improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil, the method with 10% methyl alcohol for solvent be made into 2% NaOH basic solution, add purity be the attapulgite of 99% under ultrasonic disperse, be dispersed into slurries, attapulgite weight ratio is 20% of whole slurries.By finishing agent according to 1: 5 ratio join catalytic cracking heavy oil and extract out in aromatic hydrocarbons; device adds water trap; under the protection of nitrogen; stir; reflux 3 hours, under then carrying out the pressure of 10mmHg, underpressure distillation obtains refined oil, and treated oil colourity is 1.5; place 3 months at normal temperatures, colourity does not change.
Embodiment 2
A kind of method improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil, the method with 1% ethanol for solvent be made into 10% sodium carbonate basic solution, add purity be the attapulgite of 95% under ultrasonic disperse, be dispersed into slurries, attapulgite weight ratio is 50% of whole slurries.By finishing agent according to 1: 50 ratio join catalytic cracking heavy oil and extract out in aromatic hydrocarbons; device adds water trap; under the protection of nitrogen; stir; reflux 1.5 hours, under then carrying out 1mmHg pressure, underpressure distillation obtains refined oil, and treated oil colourity is 2.0; place 3 months at normal temperatures, colourity does not change.
Embodiment 3
A kind of method improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil, the method with 5% methyl alcohol for solvent be made into 5% NaOH basic solution, add purity be the attapulgite of 99% under ultrasonic disperse, be dispersed into slurries, attapulgite weight ratio is 2% of whole slurries.By finishing agent according to 1: 10 ratio join catalytic cracking heavy oil and extract out in aromatic hydrocarbons; device adds water trap; under the protection of nitrogen; stir; reflux 0.5 hour, under then carrying out the pressure of 30mmHg, underpressure distillation obtains refined oil, and treated oil colourity is 1.5; place 3 months at normal temperatures, colourity does not change.
Claims (6)
1. one kind is improved the method that catalytic cracking heavy oil extracts stability of aromatic hydrocarbon out, it is characterized in that the method comprises the preparation of composite precision preparation and refining two portions of oil product, finishing agent is the alkaline slurry containing attapulgite, by finishing agent according to 1: 5 ~ 50 ratio join catalytic cracking heavy oil and extract out in aromatic hydrocarbons, under the protection of nitrogen, stir, reflux 0.5 ~ 3 hour, then carry out underpressure distillation and obtain refined oil; The described alkaline slurry containing attapulgite is the slurries of the high dispersing formed through ultrasonic high force dispersion in alkaline solution by attapulgite, and attapulgite accounts for 2 ~ 50% of alkaline slurry gross weight.
2. a kind of method improving catalytic cracking heavy oil extraction stability of aromatic hydrocarbon according to claim 1, when it is characterized in that described backflow, need add water trap.
3. a kind of method improving catalytic cracking heavy oil extraction stability of aromatic hydrocarbon according to claim 1, it is characterized in that described attapulgite is the attapulgite obtained after purifying containing attapulgite clay, attapulgite content is greater than 95%.
4. a kind of catalytic cracking heavy oil that improves according to claim 1 extracts the method for stability of aromatic hydrocarbon out, it is characterized in that described alkaline solution be containing 2 ~ 10% sodium hydroxide or sodium carbonate solution.
5. a kind of method improving catalytic cracking heavy oil extraction stability of aromatic hydrocarbon according to claim 1, is characterized in that the solvent of described alkaline solution is the alcohol water mixed solvent containing ethanol or methyl alcohol 1 ~ 10%.
6. a kind of method improving catalytic cracking heavy oil extraction stability of aromatic hydrocarbon according to claim 1, is characterized in that the pressure of described underpressure distillation is 1 ~ 30mmHg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410110.6A CN102863984B (en) | 2012-10-22 | 2012-10-22 | Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410110.6A CN102863984B (en) | 2012-10-22 | 2012-10-22 | Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102863984A CN102863984A (en) | 2013-01-09 |
| CN102863984B true CN102863984B (en) | 2015-06-17 |
Family
ID=47443117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210410110.6A Active CN102863984B (en) | 2012-10-22 | 2012-10-22 | Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102863984B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243147A (en) * | 1998-09-23 | 2000-02-02 | 中国石油化工集团公司 | Method for improving stability of liquid petroleum product |
| PT1315785E (en) * | 2000-09-01 | 2008-06-17 | Quadrant Man Inc | Process for removing low amounts of organic sulfur from hydrocarbon fuels |
| CN101544906A (en) * | 2009-05-05 | 2009-09-30 | 江苏工业学院 | Method for improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil |
-
2012
- 2012-10-22 CN CN201210410110.6A patent/CN102863984B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243147A (en) * | 1998-09-23 | 2000-02-02 | 中国石油化工集团公司 | Method for improving stability of liquid petroleum product |
| PT1315785E (en) * | 2000-09-01 | 2008-06-17 | Quadrant Man Inc | Process for removing low amounts of organic sulfur from hydrocarbon fuels |
| CN101544906A (en) * | 2009-05-05 | 2009-09-30 | 江苏工业学院 | Method for improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil |
Non-Patent Citations (1)
| Title |
|---|
| 凹凸棒石黏土脱除柴油机碳烟的实验研究;邹建国等;《非金属矿》;20050309;第28卷(第1期);第44页-第46页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102863984A (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101367711B (en) | Method for purifying glycerol from biodiesel production | |
| CN105131299B (en) | A kind of preparation method of long chain alkyl modified phenyl hydrogen-containing silicon oil | |
| WO2011117705A3 (en) | Process for the conversion of lignin to liquid hydrocarbons | |
| CN101531922B (en) | Method for improving quality of biomass pyrolysis oil through reactive extraction | |
| Peng et al. | Facile and efficient conversion of furfuryl alcohol into n-butyl levulinate catalyzed by extremely low acid concentration | |
| Xue et al. | Highly Efficient Cleavage of Ether Bonds in Lignin Models by Transfer Hydrogenolysis over Dual‐Functional Ruthenium/Montmorillonite | |
| Dias et al. | Study of an ethylic biodiesel integrated process: Raw-materials, reaction optimization and purification methods | |
| CN107841340B (en) | A kind of method that triglycerides thermochemical study prepares biological aviation hydrocarbon fuel | |
| CN101659878B (en) | Improved regeneration technique for decolorizing and deodorizing waste tyre oil and method for preparing diesel fuel thereof | |
| CN102863984B (en) | Method for improving stability of catalytic cracking heavy oil pumping aromatic hydrocarbon | |
| CN108067304A (en) | A kind of mesoporous function hybrid material and preparation method and application | |
| CN108772070A (en) | The preparation method of iron-based composite catalyst for the online upgrading of bio oil | |
| CN103897753B (en) | A kind of method of the biological Aviation Fuel of mesopore molecular sieve preparation | |
| CN103031141A (en) | Method for removing mercaptan in lightweight petroleum product | |
| Sukhbaatar et al. | An exploratory study on the removal of acetic and formic acids from bio-oil | |
| CN104357082B (en) | A kind of for removing the composite deacidifying agent of aphthenic acids in diesel oil | |
| CN109722271A (en) | A method of reducing the mercaptans content of light-end products | |
| CN109735362A (en) | A method of I class base oil of regeneration is non-plus hydrogen produces II class Reclaimed Base Oil | |
| CN101538478A (en) | Method for preparing reagent for depriving hydrogen sulphide | |
| US8981136B2 (en) | Process for making esters | |
| CN102533319A (en) | Method for removing alkaline nitride in oil product | |
| CN104371786B (en) | Alkali lye desulfurization method and device of liquefied petroleum gas | |
| CN101544906B (en) | Method for improving stability of aromatic hydrocarbon pumped from catalytic cracking cycle oil | |
| CN109337714B (en) | Preparation method of low-naphthalene high-boiling-point aromatic solvent for rubber resin plasticizer | |
| CN102249840B (en) | Technology for synthetizing biphenyl by catalysis from abandoned capacitor oil in subcritical water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |