CN105713646B - A kind of environment-friendly type crude oil decalcifying agent - Google Patents

A kind of environment-friendly type crude oil decalcifying agent Download PDF

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Publication number
CN105713646B
CN105713646B CN201610161271.4A CN201610161271A CN105713646B CN 105713646 B CN105713646 B CN 105713646B CN 201610161271 A CN201610161271 A CN 201610161271A CN 105713646 B CN105713646 B CN 105713646B
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acid
crude oil
environment
friendly type
agent
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CN201610161271.4A
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CN105713646A (en
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周钰明
佘晨光
马帅帅
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Southeast University
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Southeast University
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/02Non-metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F228/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
    • C08F228/02Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G2300/00Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20Characteristics of the feedstock or the products
    • C10G2300/201Impurities
    • C10G2300/205Metal content

Abstract

The present invention is a kind of environment-friendly type crude oil decalcifying agent, the homogeneous transparent mixture that it is 20~40wt.% by the solid content of organic double compound and water mixed preparing at room temperature that the decalcifying agent, which is, the organic double compound is that mixture is formed at room temperature by 30~50wt.% chelating agents, 5~20wt.% organic acids, 5~20wt.% dispersants, 10~30wt.% nertralizers.Environment-friendly type crude oil decalcifying agent prepared by the invention is applied to the crude oil of middle high calcium content, can effectively remove the calcium in crude oil, and product is not phosphorous, environment-friendly.

Description

A kind of environment-friendly type crude oil decalcifying agent
Technical field
The present invention relates to a kind of environment-friendly type crude oil decalcifying agent, belong to PETROLEUM PROCESSING field, be that one kind is applied to middle high calcium class The non-phosphate environment-friendly type crude oil decalcifying agent of the removing of the metallic elements such as Calcium in Crude Oil, iron.
Background technology
The exploitation in many oil fields domestic at present was progressed into the middle and later periods, and crude oil heaviness is increasingly severe, so that The tenor more and more higher in the crude oil of output is obtained, representational metal ingredient is calcium and iron.With Ca2+Exemplified by content, the Liaohe River Viscous crude calcium ion mass fraction has reached 348 μ g/g;The Sudan Fula-North-3 oil Ca of foreign country2+Mass fraction to be surprising 1990 μ g/g, this cause crude oil decalcifying work become very to be necessary.
Calcium in crude oil is divided into inorganic calcium and the major class of organic calcium two.Inorganic calcium is in forms such as calcium chloride, calcium carbonate, calcium sulfate In the presence of organic calcium exists in forms such as calcium naphthenate, fat resin acid calcium, phenol calcium.Generally, the calcium salt in crude oil can also be Because washing, sedimentation separation come out during crude oil electric desalting, and organocalcium compound is soluble in oil and is insoluble in water, in electro-desalting During be difficult to remove.This part calcium has a negative impact to the processing of follow-up crude oil.Calcium in Crude Oil too high levels are processed to crude oil There is more serious influence, high calcium can be deposited in the space of catalyst, reduce its specific surface area, catalyst is lost activity, For hydrocracking catalyst, the excessive calcium in crude oil can block the medium channel of beds, make reactor In pressure drop increase, while accelerating the deactivated process of catalyst;In the Crude Desalting System of decalcification, Calcium in Crude Oil content It is too high to increase electrical conductivity so that the electric current increase in Crude Desalting System, add the influence such as consumption of electric energy.
The decalcification technic of current main flow can mainly be attributed to chemical chelating method, chemical acidic treatment and chemical precipitation method. Chemical chelating method, the method as disclosed in Chinese patent CN1076473, CN87105863, CN10366981, this kind of method uses energy Crude oil decalcifying is carried out with Ca amino carboxylic acid, dicarboxylic acids, hydroxycarboxylic acid and its esters for generating water soluble chelate compound;At chemical acid Logos, the method as disclosed in Chinese patent CN1055552, CN1454967, CN1267707, CN1521239 utilizes organic or nothing Strong acid carries out the hydrionic principle of strong acid in weak acid displacement with the petroleum acids calcium in crude oil in machine, is oil by petroleum acids calcium reduction Acid removes the calcium in crude oil, have the disadvantage strong acid can severe corrosion equipment, while there is larger penetrating odor, crude oil is fitted The shortcomings of answering property is poor, decalcifying agent consumption is big;Chemical precipitation decalcification, such as Chinese patent CN1120575, CN1054261, Method disclosed in CN1760338, this kind of method uses the petroleum acids calcium effect generation in water soluble sulfate, phosphate and crude oil Slightly soluble or water insoluble calcium sulfate, calcium phosphate precipitation thing, in the presence of surfactant, are deposited on aqueous phase and reach decalcification Purpose, the shortcoming of this kind of method is that the decalcifying agent of phosphoric acid salt contains phosphorus first, can cause water pollution, and effect on environment is big, Secondly it is not high to the removal efficiency of calcium, the easy occluding device pipeline of sediment of generation, while the industrial residue produced needs processing. It is that can effectively remove the calcium in crude oil the characteristics of the crude oil decalcifying agent the present invention relates to a kind of environment-friendly type crude oil decalcifying, and production Product are not phosphorous, environment-friendly.
The content of the invention
Technical problem:A kind of environment-friendly type crude oil decalcifying agent, during the environment-friendly type crude oil decalcifying agent prepared by the invention is applied to The crude oil of high calcium content, can effectively remove the calcium in crude oil, and product is not phosphorous, environment-friendly.
Technical scheme:The technical scheme that is used of technical problem of the present invention for:
The environment-friendly type crude oil decalcifying agent of the present invention is that consolidating for mixed preparing contains at room temperature with water by organic double compound Measure the homogeneous transparent mixture for 20~40wt.%, the organic double compound be by 30~50wt.% chelating agents, 5~ Mixture is formed at room temperature for 20wt.% organic acids, 5~20wt.% dispersants, 10~30wt.% nertralizers.
The chelating agent that the decalcifying agent prepares described in organic double compound used is by ALS, itaconic acid and propylene Sour hydroxyl esters carry out that ternary is free-radical polymerized to be formed, and the general structure of the chelating agent is:
Wherein:
R is-CH2OH、-CHOHCH3、-CH2CH2CH2One kind in OH;
Degree of polymerization x is that 1~1000, y is that 1~1000, z is 1~1000.
The preparation method of the chelating agent is:In room temperature, N2Under atmosphere, on the basis of ALS quality, by pi-allyl Sodium sulfonate and the itaconic acid of 0.05~5 times of ALS quality, which are added in reactor, to be mixed, and temperature is risen into 50~95 DEG C Afterwards, acrylic acid hydroxyl esters, the water of 0.1~5 times of ALS quality of 0.1~5 times of ALS quality are added, is mixed While the inorganic initiator aqueous solution and mass percentage concentration that dropwise addition mass percentage concentration is 5wt.%~50wt.% are after even 5wt.%~30wt.% chain-transferring agent, the addition of inorganic initiator is 0.01~0.6 times of ALS quality, 0.5 ~2h is dripped off, and the addition of chain-transferring agent is 0.01~0.4 times of ALS quality, and 0.5~2h is dripped off, and drips off rear microwave React under 0.1~0.5h, microwave power is 90~900W, continue at 50~95 DEG C after microwave reaction to react 1~5h, be cooled to room Temperature, is made the polycarboxylic acids sodium sulfonate esters chelating agent of light yellow clear.
Acrylic acid hydroxyl esters described in the preparation method of above-mentioned polycarboxylic acids sodium sulfonate esters chelating agent are acrylic acid hydroxyl Ethyl ester, hydroxypropyl acrylate, one kind of hy-droxybutyl;Described inorganic initiator is sodium peroxydisulfate, potassium peroxydisulfate, weighting Sulfinic acid sodium, the one kind laid particular stress in sulfinic acid potassium, persulfonic acid sodium, persulfonic acid potassium, hydrogen peroxide;Described chain-transferring agent is formic acid One kind in sodium, sodium sulfite, mercaptoethanol, TGA, DTAC.
The organic acid that above-mentioned decalcifying agent prepares described in organic double compound used is ethanedioic acid, acetic acid, butanedioic acid, lemon Acid, one or more kinds of combinations of sulfamic acid;Described dispersant is lauryl sodium sulfate, maleic acrylic copolymerization It is a kind of or many in thing, polyacrylamide, HPMA, polyacrylic acid, acrylic acid/hydroxypropyl acrylate copolymer The combination planted;Described nertralizer is hexa, diethylenetriamine, EDTA, diethyl pentetic acid, nitrilo- three One or more kinds of combinations in acetic acid.
Demetalization (calcium, iron) rate is determined:
It is rather oily for Shandong that the present invention evaluates the crude oil that uses, and the calcium content in the crude oil is that 71ppm, iron content are 6.1ppm. Pending crude oil is added 80 DEG C are preheating to after 6% distilled water, be incubated 20 minutes, add pending crude quality percentage 10ppm demulsifier (YJ-1 types), mix and be demulsified in blender for 5 minutes, is transferred into after demulsification in electrical desalter, The environment-friendly type crude oil decalcifying agent for adding 100ppm is mixed, and is 140 DEG C in electric desalting apparatus temperature, forceful electric power field voltage is 1000V, the residence time is 15 minutes, and light current field voltage is 400V, and the residence time is 15 minutes, and the sedimentation time is the bar of 30 minutes Electro-desalting operation is carried out under part, crude oil and electro-desalting waste water are separated afterwards, crude oil is detected after collection is de-, using inductive Plasma emission spectrum (ICP-AES) determines the content of the metallic element of oil sample.
The de- rear crude oil of 10g is put into dry silica crucible, 15mL ethanol and petroleum ether is separately added into, is placed In carrying out being slowly heated up to burning in temp.-regulating electric heating device, ashing processing is carried out to it.Deng oil sample self-extinguish and without white cigarette After emerging, silica crucible is taken out, shifted in Muffle furnace, the carbon that calcination 5h is remained with eliminating in oil sample at 550 DEG C.It is to be seen Into silica crucible without being taken out after black particle thing, capping is cooled down.Ash sample is soaked with a small amount of distilled water afterwards, along silica crucible Wall of cup adds 3mLHCl solution (volume ratio 1: 1), 10mL HNO3Solution (volume ratio 1: 1).It is slow in continuation on temp.-regulating electric heating device Slow heated quartz crucible is completely dissolved up to ash content, is evaporated up to solution residue 2-3mL, and color switchs to transparent, taking-up cooling, will Gained sample is transferred in 25mL volumetric flasks, and 25mL is settled to distilled water, rocks uniform.Using inductively coupled plasma Calcium, the content of iron in above-mentioned the prepared solution of body emission spectrometry (ICP-AES) measurement, are designated as X1, operated according to decalcification Step is handled crude oil, but is added without crude oil decalcifying agent, then according to the measure of demetallization per to only carrying out electro-desalting behaviour The crude oil sample of work is handled, and measures above-mentioned prepared using inductively coupled plasma emission spectrography (ICP-AES) The content of calcium in solution, is designated as X0, while the content of iron ion can be measured, show that environment-friendly type is former according to following computational methods The numerical value of oily decalcifying agent demetallization per:
Demetallization per (%)=(X0-X1)/X0
Beneficial effect:
A kind of environment-friendly type crude oil decalcifying agent of the present invention has the characteristics that:
(1) the environment-friendly type crude oil decalcifying agent is phosphorous, preparation technology green environment is friendly, in compound process and chelating agent Using water as solvent in preparation process, reaction meets Atom economy, and product can come into operation without separation, operative employee Skill is easy, environmental protection.
(2) the environment-friendly type crude oil decalcifying agent has taken into full account the association between different groups in preparation process and compound process Same-action, contained abundant hydroxy-acid group, sulfonic acid group and ester group in chelating agent, the hydroxy-acid group contained can chelate original Calcium in oil, and the cyclic chelate formed has water solubility;The sulfonic acid group contained can avoid carboxylic acid copolymer from existing Itself concentration is higher or cation concn produces the defect of gel compared with relative superiority or inferiority;The ester group contained has nonpolar, easy increase oil The contact area of water termination, so as to improve decalcification effect;The organic acid selected in compound process is to contain abundant hydroxy-acid group Or the small molecule acid of sulfonic acid group, so that the environment-friendly type crude oil decalcifying agent has a good decalcification effect, and formed Calcium chelate is soluble in water, it is easy to separate, simple using technique.Meanwhile, microwave treatment is used in chelating agent preparation process, is increased Plus intermolecular interaction, the reaction time is substantially reduced, chemical reaction rate is improved, product property is stable.
(3) while the environment-friendly type crude oil decalcifying agent has high decalcification effect, the part iron in crude oil can also be removed.
Embodiment
Embodiment 1
N2180g ALSs and 90g itaconic acids, are added in reactor at 25 DEG C, are warming up to after mixing by atmosphere 90 DEG C, 140g hydroxy-ethyl acrylates and 100g water are added, the sodium peroxydisulfate that mass percentage concentration is 10wt.% is added dropwise after mixing The aqueous solution 65g and sodium sulfite aqueous solution 40g that mass percentage concentration is 10wt.%, after 2h is dripped off, is carried out micro- under microwave field Ripple reacts 0.5h, after the power of microwave is 450W, microwave reaction, removes microwave field, temperature is adjusted into 75 DEG C, continue to react 4h, It is cooled to after room temperature, polycarboxylic acids sodium sulfonate esters chelating agent 610g is made, be cooled to 25 DEG C, adds sulfamic acid 350g, poly- third Olefin(e) acid 350g, diethylenetriamine 450g are mixed, and obtain organic double compound, are added distilled water 6175g mixings, are obtained environment-friendly type former Oily decalcifying agent.
By the measure of demetallization per, the decalcification rate of the environment-friendly type crude oil decalcifying agent is that 83.8%, deferrization rate is 58.4%.
Embodiment 2
Polycarboxylic acids sodium sulfonate esters chelating agent is used polycarboxylic acids sodium sulfonate esters at chelating agent prepared by example 1,25 DEG C Chelating agent 610g, sulfamic acid 350g, maleic acid/acrylic copolymer 260g, NTA 520g are mixed, that is, are had Machine compound, adds distilled water 5220g mixings, that is, obtains environment-friendly type crude oil decalcifying agent.
By the measure of demetallization per, the decalcification rate of the environment-friendly type crude oil decalcifying agent is that 83.2%, deferrization rate is 49.3%.
Embodiment 3
Polycarboxylic acids sodium sulfonate esters chelating agent is used polycarboxylic acids sodium sulfonate esters at chelating agent prepared by example 1,25 DEG C Chelating agent 610g, citric acid 150g, sulfamic acid 150g, HPMA 300g, hexa 300g are mixed, i.e., Organic double compound is obtained, distilled water 3020g mixings is added, that is, obtains environment-friendly type crude oil decalcifying agent.
By the measure of demetallization per, the decalcification rate of the environment-friendly type crude oil decalcifying agent is that 86.9%, deferrization rate is 65.4%.
Embodiment 4
N2120g ALSs and 80g itaconic acids, are added in reactor at 25 DEG C, are warming up to after mixing by atmosphere 60 DEG C, addition 50g hy-droxybutyls and 180g water are added, the over cure that mass percentage concentration is 20wt.% is added dropwise after mixing The sour potassium 60g and DTAC 60g that mass percentage concentration is 15wt.%, after 1.5h is dripped off, under microwave field Carry out microwave reaction 0.3h, after the power of microwave is 750W, microwave reaction, removes microwave field, temperature is adjusted to 75 DEG C, continue anti- Answer 3.5h, be cooled to after room temperature, polycarboxylic acids sodium sulfonate esters chelating agent 550g is made, be cooled to 25 DEG C, add butanedioic acid 110g, Acetic acid 55g, acrylic acid and hydroxypropyl acrylate copolymer 220g, diethylenetriamine 110g, EDTA55g are mixed, and obtain organic multiple Compound, adds distilled water 2000g mixings, obtains environment-friendly type crude oil decalcifying agent.
By the measure of demetallization per, the decalcification rate of the environment-friendly type crude oil decalcifying agent is that 86.3%, deferrization rate is 68.5%.
Embodiment 5
Polycarboxylic acids sodium sulfonate esters chelating agent is used polycarboxylic acids sodium sulfonate esters at chelating agent prepared by example 2,25 DEG C Chelating agent 550g, citric acid 100g, sulfamic acid 120g, polyacrylamide 245g, diethyl pentetic acid 255g are mixed, i.e., Organic double compound is obtained, distilled water 2540g mixings is added, that is, obtains environment-friendly type crude oil decalcifying agent.
By the measure of demetallization per, the decalcification rate of the environment-friendly type crude oil decalcifying agent is that 85.2%, deferrization rate is 45.5%.

Claims (6)

1. a kind of environment-friendly type crude oil decalcifying agent, it is characterised in that the crude oil decalcifying agent is mixed at room temperature by organic double compound with water The solid content being formulated is 20~40wt% homogeneous transparent mixture, and the organic double compound is chelated by 30~50wt% Mixture is formed at room temperature for agent, 5~20wt% organic acids, 5~20wt% dispersants, 10~30wt% nertralizers;
The chelating agent that the decalcifying agent prepares described in organic double compound used is by ALS, itaconic acid and acrylic acid hydroxyl Esters carry out that ternary is free-radical polymerized forms, and the general structure of the chelating agent is:
Wherein:
R is-CH2OH、-CHOHCH3、-CH2CH2CH2One kind in OH;
Degree of polymerization x is that 1~1000, y is that 1~1000, z is 1~1000.
2. a kind of environment-friendly type crude oil decalcifying agent according to claim 1, it is characterised in that the preparation method of the chelating agent For:
In room temperature, N2Under atmosphere, on the basis of ALS quality, by ALS and 0.05~5 times of allyl sulphonic acid The itaconic acid of sodium quality is added in reactor and mixed, and temperature is risen to after 50~95 DEG C, adds 0.1~5 times of ALS The water of the acrylic acid hydroxyl esters of quality, 0.1~5 times of ALS quality, mass percentage concentration is added dropwise after mixing simultaneously is 5wt.%~50wt.% inorganic initiator the aqueous solution and mass percentage concentration is 5wt.%~30wt.% chain-transferring agent, nothing The addition of machine initiator is 0.01~0.6 times of ALS quality, and 0.5~2h is dripped off, and the addition of chain-transferring agent is 0.01~0.4 times of ALS quality, 0.5~2h is dripped off, and drips off rear 0.1~0.5h of microwave reaction, and microwave power is 90 Continue 1~5h of reaction after~900W, microwave reaction at 50~95 DEG C, be cooled to room temperature, the polycarboxylic acids sulphur of light yellow clear is made Sour sodium ester quasi-chelate compound.
3. a kind of environment-friendly type crude oil decalcifying agent according to claim 2, it is characterised in that described acrylic acid hydroxyl esters are One kind of hydroxypropyl acrylate, hy-droxybutyl;Described inorganic initiator for lay particular stress on sulfinic acid sodium, lay particular stress on sulfinic acid potassium, One kind in persulfonic acid sodium, persulfonic acid potassium, hydrogen peroxide;Described chain-transferring agent be sodium formate, mercaptoethanol, TGA, One kind in DTAC.
4. a kind of environment-friendly type crude oil decalcifying agent according to claim 1, it is characterised in that described organic acid be ethanedioic acid, Acetic acid, butanedioic acid, citric acid, one or more kinds of combinations of sulfamic acid.
5. a kind of environment-friendly type crude oil decalcifying agent according to claim 1, it is characterised in that described dispersant is maleic acid It is a kind of or many in acrylic copolymer, HPMA, polyacrylic acid, acrylic acid/hydroxypropyl acrylate copolymer The combination planted.
6. a kind of environment-friendly type crude oil decalcifying agent according to claim 1, it is characterised in that described nertralizer is six methylenes One or more kinds of combinations in urotropine, diethylenetriamine, EDTA, diethyl pentetic acid, NTA.
CN201610161271.4A 2016-03-21 2016-03-21 A kind of environment-friendly type crude oil decalcifying agent Expired - Fee Related CN105713646B (en)

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Publication number Priority date Publication date Assignee Title
CN106496455B (en) * 2016-10-21 2018-12-11 中国海洋石油集团有限公司 A method of improving crude oil decalcifying agent low-temperature stability
CN108641697A (en) * 2018-04-20 2018-10-12 黄智慧 A kind of preparation method of demulsifier
CN112322340B (en) * 2020-10-19 2023-02-24 南京江宇新材料科技有限公司 Crude oil iron metal remover and preparation method thereof
CN112552952B (en) * 2020-12-07 2022-10-04 深圳市广昌达石油添加剂有限公司 Crude oil decalcifying agent and preparation method and application thereof

Citations (2)

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CN103242891A (en) * 2013-05-10 2013-08-14 中国海洋石油总公司 Decalcifying agent for high-acid heavy crude oil
CN103468028A (en) * 2013-10-08 2013-12-25 深圳市瑞成科讯实业有限公司 Efficient calcium slurry dispersant and preparation method thereof

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN103242891A (en) * 2013-05-10 2013-08-14 中国海洋石油总公司 Decalcifying agent for high-acid heavy crude oil
CN103468028A (en) * 2013-10-08 2013-12-25 深圳市瑞成科讯实业有限公司 Efficient calcium slurry dispersant and preparation method thereof

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