CN105296005A - Refined furfural deacidification agent and preparation method thereof - Google Patents
Refined furfural deacidification agent and preparation method thereof Download PDFInfo
- Publication number
- CN105296005A CN105296005A CN201510658222.7A CN201510658222A CN105296005A CN 105296005 A CN105296005 A CN 105296005A CN 201510658222 A CN201510658222 A CN 201510658222A CN 105296005 A CN105296005 A CN 105296005A
- Authority
- CN
- China
- Prior art keywords
- furfural
- agent
- water
- acidying
- demulsifying
- 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.)
- Pending
Links
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention provides a refined furfural deacidification agent. The refined furfural deacidification agent is prepared from the following components in percentage by mass: 30 to 55 percent of organic amine, 20 to 40 percent of demulsifying agent and 10 to 40 percent of compound solvent, wherein the demulsifying agent is one or the combination of a nonionic polyacrylamide type demulsifying agent and a micro-molecular branched-structure polymer. The invention also discloses a preparation method of the refined furfural deacidification agent. According to the refined furfural deacidification agent provided by the invention, acidic matters such as furfural acid and naphthenic acid in furfural can be effectively neutralized, so that the acid value of the furfural can be reduced; due to the demulsifying agent in the refined furfural deacidification agent, the furfural can be effectively prevented from being emulsified by water, and the furfural and the water are mutually delaminated, so that the furfural and the water can be conveniently separated, and the COD (Chemical Oxygen Demand) value of the water can be greatly reduced.
Description
Technical field
The present invention relates to a kind of de-acidying agent, particularly relate to furfural treatment de-acidying agent.The invention still further relates to this de-acidying agent preparation method.
Background technology
Furfural extraction unit is using furfural as extraction solvent, according to the selectivity of furfural, removes the undesirable components in lubricant base, reaches refining object.Processing sulfur-bearing raw material can make furfural extraction unit seriously corroded, and especially the corrosion of furfural aqueous solution recovery system is particularly serious.The oxidation stability of furfural is poor, under the effect of air, water, sunlight, be very easily oxidized to furfural acid, has stronger corrodibility, and can be polymerized spanning tree smectic oxide compound further, last condensation coking.Aborning, due to furfural recycle, furfural is constantly oxidized, and furfural, furfural acid, water become ternary azeotrope, and the system furfural acid of making cannot be separated, and constantly accumulates, and causes circulation furfural acidity high.In addition, acidic substance (naphthenic acid is main) in decompression side line distillate can by furfural solvent extracting, but the boiling point naphthenic acid close with furfural boiling point in solvent recuperation with furfural circulation, have accumulated naphthenic acid, facilitate circulation furfural acidity to raise, refining effect is poor.Stoping furfural oxidation, going bad is improve the basic effective way of furfural extraction unit.Although take some physical protection measures, as done degassing tower degassing operation well, furfural storage tank adds oil sealing, control furnace outlet temperature, adopt stainless steel to improve equipment anticorrosion ability etc., play corrosion inhibition to a certain extent, but furfural can not be stoped to be oxidized, in and furfural oxide compound.
Chemical Preservation technology is utilized to solve furfural aqueous solution recovery system caustic solution, as periodical " Maoming petrochemical complex " 2005.1(20 page) " utilizing DY-06 de-acidying agent to reduce heavy furfural refining oil neutralization value " introduce: after the outlet valve of furfural treatment aqueous solution system, add a kind of organic macromolecule ammonia, by acid-base neutralisation reaction reduction system furfural acidity, neutralized reaction product enters aqueous solution recovery tower with the aqueous solution, and discharges with tower draining.But in practice, there are the following problems for the method: (1) injects this de-acidying agent, organic macromolecule ammonia and furfural acid generate furfural acid amine salt, furfural acid amine salt can make the emulsifying property of water increase, aldehyde and aquatic products lactogenesis, and aldehyde water stratification is unintelligible, general demulsifying agent all cannot make it obvious layering, emulsion separates difficulty, cause dehydration tower draining COD value large, device efflux wastewater is not up to standard.(2) corrosion and the coking of furfural extraction unit pumped vacuum systems water-sealed tank cannot be alleviated.Because furfural self-polymerization generates burnt class macromole, the big and small burnt dirt of high more than half meter is often full of in vacuum water sealed cans, the water of top is taken out pipeline and water and is taken out nozzle and easily blocked by burnt grain in tank, and general one and a half months is removed water and taken out pipeline and nozzle decoking, and labour intensity is large.The very large adhesivity jelly that has that device can generate because of furfural coking is attached to vacuum water sealed cans and water takes out pipeline inwall, be piled into very thick very hard Jiao dirt, if cannot remove during maintenance, just have to have changed new corrosion resistant stainless steel water sealed cans and water takes out pipeline, increase production cost.
Summary of the invention
An object of the present invention is to provide a kind of furfural treatment de-acidying agent, this de-acidying agent not only can in and acidic substance in furfural, can also after acidifying, the layering between furfural water system is obvious, is conducive to the separation of the two.
Two of object of the present invention is the preparation method providing this de-acidying agent.
First object of the present invention is achieved through the following technical solutions: a kind of furfural treatment de-acidying agent, comprises the component of following mass percent:
Organic amine 30% ~ 55%
Demulsifying agent 20% ~ 40%
Complex solvent 10% ~ 40%;
Described demulsifying agent is one or both combination in non-ionic polyacrylamide type emulsion splitter and small molecules branched structure polymkeric substance.
Organic amine in de-acidying agent and furfural acid react, and generate furfural acid amine salt.Although furfural acid amine salt can make the emulsifying property of water increase, make water and furfural emulsification, but because demulsifying agent adopts non-ionic polyacrylamide type emulsion splitter and/or small molecules branched structure polymkeric substance, reduce the emulsifying property of water, make the settlement separate smooth and easy of furfural and water, layering is obvious, contributes to the separation of furfural water system solution, reduce the COD value of the aqueous solution, make draining reach standard of drainage.
Organic amine of the present invention is by the mixing of one or both in diethanolamine, trolamine, Main Function be in and furfural acid and naphthenic acid.
Demulsifying agent of the present invention is made up of one or both in water-soluble demulsifier JH-3 and JH-5, and JH-3 type emulsion splitter is non-ionic polyacrylamide type emulsion splitter, and surface wettability is strong, the water purification that tool is good; JH-5 type emulsion splitter is small molecules branched structure polymkeric substance, and dispersed and interface is substituting comparatively strong, can make aldehyde water termination short texture, reduce interface film strength, have breaking emulsion and dewatering function.
Also comprise inhibiter in the present invention, its mass percentage content in de-acidying agent is 1 ~ 5%.Described inhibiter is vulkacit H, can reduce the corrosion of acidic substance to device metal surface.
Complex solvent of the present invention is water.
Second object of the present invention is achieved through the following technical solutions: the preparation method of above-mentioned de-acidying agent, comprises the following steps:
(1) organic amine, demulsifying agent and complex solvent is taken in proportion;
(2) in heating stirrer, first add organic amine, complex solvent, at 40 ~ 60 DEG C, stir 20 ~ 25min, make it fully dissolve, obtain the thing that is mixed;
(3) be mixed described in thing and add described inhibiter and demulsifying agent, keep stirring 30 ~ 40min at 50 ~ 70 DEG C, obtain de-acidying agent finished product.
the present invention compared with prior art has following technique effect:
1. will more, the good DY-06 de-acidying agent of effect be selected in de-acidying agent of the present invention and internal lube oil furfural extraction unit to make reference, evaluation result be as follows:
By de-acidying agent of the present invention and DY-06 de-acidying agent distilled water diluting to 1%, get the circulation furfural that 200ml furfural extraction unit is adopted back, add diluted de-acidying agent 0.6ml, add 80ml distilled water again, separate aqueous layer after abundant stirring, get furfural and analyze acid number, test-results is in table 1.
As shown in Table 1, de-acidying agent of the present invention can better reduce the acidity of circulation furfural relative to existing de-acidying agent.2. de-acidying agent physical and chemical index of the present invention is in table 2.
3. for investigating demulsifying agent add-on to the impact of circulation furfural acidity; get five kinds of different composition de-acidying agent distilled water dilutings to 1% of table 3; get the circulation furfural (acidity 23.83mgKOH/100ml) that 200ml furfural extraction unit is adopted back; add diluted de-acidying agent 0.6ml, then add 80ml distilled water, fully stir 5min at 45 DEG C; after leaving standstill 20min; observe the interface conditions of furfural and the aqueous solution, get furfural and analyze acid number, test-results is in table 3.
As seen from Table 3, it is large that demulsifying agent consumption can make circulation furfural acidity reduce amplitude 20% ~ 40%, and furfural and aqueous solution interface clear not muddy.
From above experimental data, the present invention has the following advantages:
(1) de-acidying agent provided by the invention, can not only effectively in and furfural acid in furfural and the acidic substance such as naphthenic acid, reduce the acid number of furfural, and the emulsion splitter in de-acidying agent can prevent furfural water system emulsification effectively, make the layering of furfural water system phase obvious, be separated both convenient, greatly can reduce the COD value of water.
(2) de-acidying agent usage quantity provided by the invention is few, in the furfural treatment aqueous solution system de-acidying agent concentration only need reach 30 ~ 40ppm can acid in effective elimination furfural.
(3) de-acidying agent usage quantity of the present invention is few, and cost is low, reduces the cost of the depickling of furfural treatment.
Embodiment
Set forth content of the present invention in detail by the following examples, but following embodiment is just for setting forth content of the present invention, instead of restriction, therefore any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
embodiment one:
Take diethanolamine 50 grams, distilled water 30 grams joins in heating stirrer, and heat to 50 DEG C and stir 20min, must be mixed thing, then adds demulsifying agent 20 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment two:
Take diethanolamine 50 grams, distilled water 20 grams joins heating stirrer, and be heated to 50 DEG C and stir 20min, must be mixed thing, then adds demulsifying agent 30 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment three:
Take diethanolamine 45 grams, distilled water 20 grams joins heating stirrer, and be heated to 50 DEG C and stir 20min, must be mixed thing, then adds demulsifying agent 35 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment four:
Take diethanolamine 45 grams, distilled water 20 grams joins heating stirrer, and be heated to 50 DEG C of stirring 20min, must be mixed thing, then adds demulsifying agent 33.5 grams and vulkacit H 1.5 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment five:
Take diethanolamine 45 grams, distilled water 30 grams joins heating stirrer, and be heated to 50 DEG C of stirring 20min, must be mixed thing, then adds demulsifying agent 20 grams and vulkacit H 5 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment six:
Take diethanolamine 45 grams, distilled water 20 grams joins heating stirrer, and be heated to 50 DEG C of stirring 20min, must be mixed thing, then adds demulsifying agent 30 grams and vulkacit H 5 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
embodiment seven:
Take diethanolamine 45 grams, distilled water 10 grams joins heating stirrer, and be heated to 50 DEG C of stirring 20min, must be mixed thing, then adds demulsifying agent 40 grams and vulkacit H 5 grams, fully dissolves and follow-up continuing is warmed up to 60 DEG C of stirring 20min.Demulsifying agent is the combination of water-soluble demulsifier JH-3 and water-soluble demulsifier JH-5.
Claims (7)
1. a furfural treatment de-acidying agent, is characterized in that, comprises the component of following mass percent:
Organic amine 30% ~ 55%
Demulsifying agent 20% ~ 40%
Complex solvent 10% ~ 40%;
Described demulsifying agent is one or both combination in non-ionic polyacrylamide type emulsion splitter and small molecules branched structure polymkeric substance.
2. furfural treatment de-acidying agent according to claim 1, is characterized in that, described organic amine is by the combination of one or both in diethanolamine, trolamine.
3. furfural treatment de-acidying agent according to claim 1, is characterized in that, described non-ionic polyacrylamide type emulsion splitter is water-soluble demulsifier JH-3, and described small molecules branched structure polymkeric substance is water-soluble demulsifier JH-5.
4. furfural treatment de-acidying agent according to claim 1, is characterized in that, described complex solvent is water.
5. the furfural treatment de-acidying agent according to claim 1 or 2 or 3 or 4, is characterized in that, also comprise inhibiter, and its mass percentage content in de-acidying agent is 1 ~ 5%.
6. furfural treatment de-acidying agent according to claim 5, is characterized in that, described inhibiter is vulkacit H.
7. the preparation method of the furfural treatment de-acidying agent described in claim 5 or 6, is characterized in that, comprise the following steps:
(1) organic amine, demulsifying agent and complex solvent is taken in proportion;
(2) in heating stirrer, first add organic amine, complex solvent, at 40 ~ 60 DEG C, stir 20 ~ 25min, make it fully dissolve, obtain the thing that is mixed;
(3) be mixed described in thing and add described inhibiter and demulsifying agent, keep stirring 30 ~ 40min at 50 ~ 70 DEG C, obtain de-acidying agent finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658222.7A CN105296005A (en) | 2015-10-14 | 2015-10-14 | Refined furfural deacidification agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658222.7A CN105296005A (en) | 2015-10-14 | 2015-10-14 | Refined furfural deacidification agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105296005A true CN105296005A (en) | 2016-02-03 |
Family
ID=55193849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510658222.7A Pending CN105296005A (en) | 2015-10-14 | 2015-10-14 | Refined furfural deacidification agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105296005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670691A (en) * | 2016-02-29 | 2016-06-15 | 中国石油化工股份有限公司 | Highly effective corrosion inhibitor for furfural refining apparatuses and preparation method |
| CN105692928A (en) * | 2016-02-29 | 2016-06-22 | 中国石油化工股份有限公司 | Method for effectively relieving corrosion of aqueous solution system of furfural refining unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353746A (en) * | 1999-06-02 | 2002-06-12 | 英国石油勘探运作有限公司 | Process for reducing acidity of oil |
| CN104357082A (en) * | 2014-10-31 | 2015-02-18 | 中国海洋石油总公司 | Composite deacidification agent for removing naphthenic acid from diesel oil |
-
2015
- 2015-10-14 CN CN201510658222.7A patent/CN105296005A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353746A (en) * | 1999-06-02 | 2002-06-12 | 英国石油勘探运作有限公司 | Process for reducing acidity of oil |
| CN104357082A (en) * | 2014-10-31 | 2015-02-18 | 中国海洋石油总公司 | Composite deacidification agent for removing naphthenic acid from diesel oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670691A (en) * | 2016-02-29 | 2016-06-15 | 中国石油化工股份有限公司 | Highly effective corrosion inhibitor for furfural refining apparatuses and preparation method |
| CN105692928A (en) * | 2016-02-29 | 2016-06-22 | 中国石油化工股份有限公司 | Method for effectively relieving corrosion of aqueous solution system of furfural refining unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101939285B (en) | Method of removing metals from hydrocarbon feedstock using esters of carboxylic acids | |
| CN101352666B (en) | Compound demulsifying agent and method of use thereof | |
| US20090186782A1 (en) | Mixed demulsifier of asp flooding produced liquid | |
| MX2011002633A (en) | Anhydride demulsifier formulations for resolving emulsions of water and oil. | |
| CN103805227A (en) | Pre-treatment process method of high acid crude oil | |
| CN103275753B (en) | Multifunctional crude oil tank farm treating agent | |
| CN106336892A (en) | Crude oil demulsifier and preparation method thereof | |
| CN105062551A (en) | Demulsifying agent for treating sand-containing crude oil | |
| CN103215064A (en) | Method for removing metal in high-acid heavy crude oil | |
| CN105296005A (en) | Refined furfural deacidification agent and preparation method thereof | |
| CN107109251B (en) | The method of metal naphthenate is removed from thick hydrocarbon mixture | |
| CN105384713A (en) | Furfural refining deacidification method and system capable of effectively reducing furfural acid value and meeting drainage standard | |
| CN104449813A (en) | Emulsion breaker for oil-water separation by efficiently treating crude oil with high clay component content on offshore oil field | |
| CN102373066B (en) | Process for treating salt deposition in fractionating tower | |
| CN204151297U (en) | A kind of chlorion extracting corrosion-resisting device | |
| CN101050382A (en) | Deemulsifier for lowering FcS content in drainage of electrical desalting /dewatering, and preparation method | |
| CN103387274B (en) | Preparation method of sulfide-bearing wastewater treating agent | |
| CN107601619A (en) | A kind of preparation technology of water process demulsifier | |
| CN103937534B (en) | A kind of acid-containing raw oil emulsion inhibitor | |
| CN105733657A (en) | Hydrocarbon oil demetalization agent and method for hydrocarbon oil demetalization | |
| CN109880648B (en) | Fractionating tower circulating device and water washing method | |
| CN212864683U (en) | Circulating anti-corrosion equipment for top of fractionating tower | |
| CN203295448U (en) | Device for prolonging running period of fractionation tower top circulation oil system | |
| CN102086408A (en) | Low-temperature demulsifier for crude oil emulsion and production method thereof | |
| CN111607431A (en) | Online desalting device and method for fractionating tower top circulation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |
|
| RJ01 | Rejection of invention patent application after publication |