CN1552629A - Complexing agent, preparing method and use thereof - Google Patents
Complexing agent, preparing method and use thereof Download PDFInfo
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- CN1552629A CN1552629A CNA031372090A CN03137209A CN1552629A CN 1552629 A CN1552629 A CN 1552629A CN A031372090 A CNA031372090 A CN A031372090A CN 03137209 A CN03137209 A CN 03137209A CN 1552629 A CN1552629 A CN 1552629A
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- complexing agent
- compound
- magnesium
- aluminium
- iron
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Abstract
A complexing agent used to improve the performance of flocculant in treating sewage is prepared from inorganic acid, Al-contained compound, Fe-contained compound and Mg-contained compound through proportional mixing and reacting. Another process is also disclosed.
Description
Technical field
The present invention relates to a kind of complexing agent and preparation method thereof and application.
Background technology
China is since later 1960s begins to use flocculation agent in (dirt) water treatment, inorganic flocculating agent is with advantages such as its low toxicity, cheapness, preparation method are simple relatively occuping market dominant position all the time, the initial main first-generation inorganic salts such as Tai-Ace S 150, aluminum chloride, iron(ic) chloride that use.The eighties, successively develop and introduced polymerize aluminum chloride (aluminium chlorohydroxide) (PAC), poly-ferric chloride (PFC), polyaluminium sulfate (PAS), bodied ferric sulfate (PFS), polymer phosphate aluminium s-generation inorganic flocculating agent-inorganic polymer flocculants such as (PAP) (inorganic polymer flocculants, IPF).
The advantage of IPF is that it is more excellent than traditional inorganic salt flocculation agent usefulness, and cheaper than organic polymer coargulator (OPF) price.But aspect form, the polymerization degree and corresponding cohesion-flocculating effect, IPF still is in the position between conventional metals salt coagulant and the OPF.Its molecular weight and globule size and flocculation bridge formation ability are still far short of what is expected than OPF, but also have the instability problem to further hydrolysis reaction, and these main weakness are impelled the various compound IPF of research and development.
The nineties, (multi-coreinorganic polymer flocculants, MC-IPF): aluminium iron polychloride (PAFC), PAFS (PAFS), polymer phosphate ferro-aluminum (PAFP), polymer aluminium silicate (PASi), polymeric silicicacid iron (PFSi), polymeric aluminium ferrum silicate (PAFSi) etc. constantly are developed out to have more the third generation inorganic flocculating agent-multi-kernel high-molecular inorganic flocculant of characteristic.Production cost increases or the product storage-stable phase shortens but be limited to, and the commercial prod of MC-IPF is also few.At present, in various water treatments the consumption maximum, use the widest remaining to utilize the PAC of various raw materials and various explained hereafter.
In the actual application, when institute's treating water change of water quality is big, dislike still that the PAC polymerization degree is big inadequately, flocculation bridge formation ability is weak, water outlet is muddy, is difficult to guarantee treatment effect.In addition, from the chemical terms of solution, PAC is the kinetics intermediate product of aluminium salt hydrolysis polymerization precipitin reaction process, is unsettled on the thermodynamics, general liquid PAC keeping life maximum half a year.The stability of solid PAC product is good slightly, but needs the liquid product drying when producing, and energy consumption is big, the cost height.Therefore the stable and synergistic of PAC is one of important method of production High Performance IP F, has to be extensive use of to be worth.
The purpose of synergy PAC mainly contained two: one, improved its over-all properties price ratio, and the 2nd, the stable staging life of raising product.In the process of preparation PAC, introduce one or more different negatively charged ion, utilize it to increase poly-effect, can obtain to contain the bigger synergy PAC product of molecular weight of different anions, as Chinese patent application CN1197038A, CN1088892A, CN1046563A.And to Manufactured PAC product, also can utilize organic high molecular polymer (as Soxylat A 25-7 PEO, polyacrylamide PAM etc.) synergy, both improved its stability, strengthened its flocculation ability again, as Chinese patent application CN1266822A, CN1266821A, CN1051157A, CN1044637A.Also can realize to general inorganic polymer flocculant synergic purposes such as PAC, as Chinese patent application CN1343632A, CN1240197A by adopting technologies such as special livering or surperficial carrier.Various synergy modified techniques all relate to the polymerization degree problem of hydroxyl complexing inorganic polymer in the effectively raising system how.
Summary of the invention
The purpose of this invention is to provide a kind of complexing agent, it can be used alone as multi-kernel high-molecular inorganic flocculant, is used for sewage disposal.
A kind of complexing agent, it is made by mineral acid, aluminum contained compound, iron containing compounds, the mixed reaction of magnesium-containing compound, and its institute's metal ion conversion for the mass percent of oxide compound is:
Al
2O
3?????5～25％；
Fe
2O
3?????1～15％；
MgO?????????1～15％。
The metal ion conversion of described complexing agent institute for oxide compound preferred mass per-cent is:
Al
2O
3?????5～15％；
Fe
2O
3?????1～5％；
MgO?????????1～5％；
Surplus is H
2O and negatively charged ion.
Second purpose of the present invention provides the method for the above-mentioned complexing agent of preparation.
In order to achieve the above object, the present invention adopts two kinds of methods to prepare above-mentioned complexing agent.
First method is: a kind of method for preparing complexing agent may further comprise the steps:
1) under 80～150 ℃, mineral acid, aluminum contained compound, iron containing compounds, magnesium-containing compound are mixed reaction;
2) obtaining the metal ion conversion of product institute through slaking for the mass percent of oxide compound is: Al
2O
3, 5～25%; Fe
2O
3, 1～15%; MgO, 1～15%; Surplus is H
2O and negatively charged ion.
Described aluminum contained compound is a kind of or arbitrary combination in aluminium hydroxide, sodium aluminate, bauxite and the aluminum chloride.
Described iron containing compounds is an iron(ic) chloride, and magnesium-containing compound is a magnesium chloride.
Described mineral acid is the hydrochloric acid and the sulfuric acid miscellany of hydrochloric acid or 1: 1, and its preferred concentration is 5%～31%, most preferably is 10%～18%.
The described reaction times is 1.5～4h, and the curing time is 12～24h.
Second method is: a kind of method for preparing complexing agent may further comprise the steps:
1) at normal temperatures, mineral acid, iron containing compounds, magnesium-containing compound, metallic aluminium are mixed reaction;
2) obtaining the metal ion conversion of product institute through slaking for the mass percent of oxide compound is: Al
2O
3, 5～25%; Fe
2O
3, 1～15%; MgO, 1～15%; Surplus is H
2O and negatively charged ion.
Described metallic aluminium is various aluminium scraps, aluminium bits or aluminium foil, and iron containing compounds is an iron(ic) chloride, and magnesium-containing compound is a magnesium chloride.
Described mineral acid is the hydrochloric acid and the sulfuric acid miscellany of hydrochloric acid or 1: 1, and its preferred concentration is 5～31%, most preferably is 10～18%.
The described reaction times is 1.5～4h, and the curing time is 12～24h.
Complexing agent of the present invention is of many uses in sewage disposal, can be used for handling oil gas field waste liquid of drilling, oil extraction-generated waste water, refinery oily(waste)water and sanitary sewage.Simultaneously, complexing agent of the present invention can also be as the raw material of complexing toughener and flocculation agent production.
Complexing agent preparation method of the present invention is simple, low for equipment requirements, and stable processing technique is simple and direct, and raw material sources are extensive, and cost is low, does not have any pollutant emission, has good environment protecting.
Embodiment
The preparation of embodiment 1, complexing agent
Under 80 ℃, with 200g H
2O, 200g 15%HCl, 100g Al (OH)
3, 50g MgCl
2With 50g FeCl
3Under slowly stirring, add respectively in the there-necked flask, successive reaction 4h, reaction is left standstill slaking 12h after finishing, and product is poured out after filtering, promptly becomes complexing agent of the present invention.Its conversion for the mass percent of oxide compound is:
Al
2O
3?????10.89％；
Fe
2O
3?????4.10％；
MgO?????????3.51％；
All the other are H
2O and chlorion.
The preparation of embodiment 2, complexing agent
Under 120 ℃, with 25mL H
2O, 20mL 31%HCl, 5g Al (OH)
3, 2.5g MgCl
2And 2.5gFeCl
3Under slowly stirring, add respectively in the there-necked flask, successive reaction 2h, reaction is left standstill slaking 16h after finishing, and product is poured out after filtering, promptly becomes complexing agent of the present invention.Its conversion for the mass percent of oxide compound is:
Al
2O
3?????5.94％；
Fe
2O
3?????2.24％；
MgO?????????1.91％；
All the other are H
2O and chlorion.
The preparation three of embodiment 3, complexing agent
Under 150 ℃, with 100mL H
2O, 50mL 31%HCl, 20g Al (OH)
3, 5g MgCl
2With 5g FeCl
3Under slowly stirring, add respectively in the there-necked flask, successive reaction 1.5h, reaction is left standstill slaking 20h after finishing, and product is poured out after filtering, promptly becomes complexing agent of the present invention.Its conversion for the mass percent of oxide compound is:
Al
2O
3?????7.26％；
Fe
2O
3?????1.37％；
MgO?????????1.17％；
All the other are H
2O and chlorion.
The preparation four of embodiment 4, complexing agent
Under the normal temperature, with 100mL H
2O, 25mL 18%HCl and 25mL 98% sulfuric acid, 12g MgCl
2And 12gFeCl
3, 5g aluminium scrap bits add in the there-necked flask under slowly stirring, successive reaction 1.5h, reaction is left standstill slaking 24h after finishing, product is poured out after filtering, promptly becomes complexing agent of the present invention.Its conversion for the mass percent of oxide compound is:
Al
2O
3?????5.25％；
Fe
2O
3?????3.28％；
MgO?????????2.81％；
All the other are H
2O, chlorion and sulfate ion.
Embodiment 5, sewage is handled with complexing agent
With the complexing agent of the foregoing description 1, carried out manufacturability enhanced flocculation Processing Test to telling the oil well produced sewage of breathing out oil field Wen Jisang-Mi Deng joint station.Existing oil well produced sewage in the sewage of this joint station has oil well borehole operation sewage and joint station sanitary sewage again, and the oil extraction-generated waste water of general one-component is more difficult.The general water quality of this station combined sewage is that the pH value is about 6.0, oleaginousness 1000～1500mg/L, and suspended substance 200～500mg/L, the actual treatment amount is 80～1000m
3/ h.Experimental result is as shown in table 1, complexing agent of the present invention contains oil removing rate to single agent single step of this sewage and reaches more than 90%, the suspended substance removal rate reaches more than 95%, the effect of handling with flocculant poly aluminium chloride ferrum (PAFC) than this station has bigger improvement, and the sewage after further handling is easy to reach the produced-water reinjection specification of quality.
The effect that table 1 is disposed of sewage with complexing agent of the present invention and contrast material compares
| Sewage quality index before handling | Handle back sewage quality index | ||
| Index | Measured value | Aluminium iron polychloride (dosage 200mg/L) | Complexing agent of the present invention (dosage 200mg/L) |
| The pH value | ????6.0 | ????6.5 | ????7.0 |
| Suspension content (mg/L) | ????317 | ????157 | ????29 |
| Oleaginousness (mg/L) | ????1275 | ????84 | ????52 |
Claims (10)
1, a kind of complexing agent, it is made by mineral acid, aluminum contained compound, iron containing compounds, the mixed reaction of magnesium-containing compound, and its institute's metal ion conversion for the mass percent of oxide compound is:
Al
2O
3????5～25％；
Fe
2O
3????1～15％；
MgO?????????1～15％。
2, complexing agent according to claim 1 is characterized in that: the metal ion conversion of described complexing agent institute for the mass percent of oxide compound is:
Al
2O
3????5～15％；
Fe
2O
3????1～5％；
MgO?????????1～5％。
3, a kind of method for preparing complexing agent may further comprise the steps:
1) under 80～150 ℃, mineral acid, aluminum contained compound, iron containing compounds, magnesium-containing compound are mixed reaction;
2) obtaining the metal ion conversion of product institute through slaking for the mass percent of oxide compound is: Al
2O
3, 5～25%; Fe
2O
3, 1～15%; MgO, 1～15%; Surplus is H
2O and negatively charged ion.
4, method according to claim 3 is characterized in that: described aluminum contained compound is a kind of or arbitrary combination in aluminium hydroxide, sodium aluminate, bauxite and the aluminum chloride.
5, method according to claim 3 is characterized in that: described iron containing compounds is an iron(ic) chloride; Described magnesium-containing compound is a magnesium chloride; Described mineral acid is the hydrochloric acid and the sulfuric acid miscellany of hydrochloric acid or 1: 1, and its preferred concentration is 5～31%, most preferably is 10～18%.
6, method according to claim 3 is characterized in that: the described reaction times is 1.5～4h, and the curing time is 12～24h.
7, a kind of method for preparing complexing agent may further comprise the steps:
1) at normal temperatures, mineral acid, iron containing compounds, magnesium-containing compound, metallic aluminium are mixed reaction;
2) obtaining the metal ion conversion of product institute through slaking for the mass percent of oxide compound is: Al
2O
3, 5～25%; Fe
2O
3, 1～15%; MgO, 1～15%; Surplus is H
2O and negatively charged ion.
8, method according to claim 7 is characterized in that: described metallic aluminium is various aluminium scraps, aluminium bits or aluminium foil; Described iron containing compounds is an iron(ic) chloride; Described magnesium-containing compound is a magnesium chloride; Described mineral acid is the hydrochloric acid and the sulfuric acid miscellany of hydrochloric acid or 1: 1, and its preferred concentration is 5～31%, most preferably is 10～18%.
9, method according to claim 7 is characterized in that: the described reaction times is 1.5～4h, and the curing time is 12～24h.
10, the application of the complexing agent in the claim 1 in sewage disposal and flocculation agent preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137209 CN1238261C (en) | 2003-05-26 | 2003-05-26 | Complexing agent, preparing method and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137209 CN1238261C (en) | 2003-05-26 | 2003-05-26 | Complexing agent, preparing method and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552629A true CN1552629A (en) | 2004-12-08 |
| CN1238261C CN1238261C (en) | 2006-01-25 |
Family
ID=34323526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03137209 Expired - Fee Related CN1238261C (en) | 2003-05-26 | 2003-05-26 | Complexing agent, preparing method and use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238261C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622681A (en) * | 2016-12-16 | 2017-05-10 | 中蓝连海设计研究院 | Ore slurry flocculating agent and preparation method and application thereof |
| CN107487822A (en) * | 2017-08-24 | 2017-12-19 | 江苏亚峰科技集团有限公司 | One kind processing flocculant for sewage and preparation method and application |
-
2003
- 2003-05-26 CN CN 03137209 patent/CN1238261C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622681A (en) * | 2016-12-16 | 2017-05-10 | 中蓝连海设计研究院 | Ore slurry flocculating agent and preparation method and application thereof |
| CN107487822A (en) * | 2017-08-24 | 2017-12-19 | 江苏亚峰科技集团有限公司 | One kind processing flocculant for sewage and preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1238261C (en) | 2006-01-25 |
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