CN103288195A - Method for preparing polysilicate composite coagulant from solid mineral by one-step process - Google Patents
Method for preparing polysilicate composite coagulant from solid mineral by one-step process Download PDFInfo
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- CN103288195A CN103288195A CN2013102638493A CN201310263849A CN103288195A CN 103288195 A CN103288195 A CN 103288195A CN 2013102638493 A CN2013102638493 A CN 2013102638493A CN 201310263849 A CN201310263849 A CN 201310263849A CN 103288195 A CN103288195 A CN 103288195A
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- silicic acid
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Abstract
The invention relates to a method for directly preparing a polysilicate composite coagulant from a solid mineral. The method comprises the following steps of: modifying a polysilicate mineral, and compounding with metal ions to directly obtain a polysilicate composite coagulant. The coagulant has the advantages of good coagulation effect, wide preparation source and low cost.
Description
Technical field
The invention belongs to technical field of waste water processing, be specifically related to a kind of preparation method who handles the polysilicate compound coagulant of oily(waste)water.
Background technology
Along with domestic oil field enters the later stage of recovering the oil, most of oil field has used the method for polymer flooding to recover the oil, make recovered water not only water content increase, the existence owing to polymkeric substance in the waste water becomes more stable, is difficult to processing.At present, the method for domestic processing oil field waste commonly used has filtration method, absorption method, chemical dosing method, biochemical process.Wherein chemical dosing method is because it is to the suitability of high salinity waste water and widespread use.Yet the conventional dose that is used for the oil field waste processing is at present gathered aluminium, poly-iron more and more is difficult to satisfy the oil field waste processing that water outlet becomes increasingly complex.
Aspect the oil field waste processing, the polysilicate compound coagulant that both at home and abroad has a spot of single stage method to prepare in the correlative study to contain multiple metal ion.CN101525174 discloses a kind of method with the poly-silicic acid compound coagulant of fly-ash Preparation, and it uses the acid extraction metal ion, extracts the composition of silicon with alkali.CN101948143A discloses a kind of method with the fly-ash Preparation polysilicate aluminum ferric chloride, and it uses yellow soda ash to come modified coal ash.The present invention uses silicate minerals and alkali and zinc compound directly to calcine the poly-silicic acid compound coagulant that----acidleach obtains containing zinc.
Summary of the invention
In view of the deficiencies in the prior art, the present invention creatively directly utilizes solid silicate class material single stage method directly to prepare polysilicate class compound coagulant, has solved the difficult transportation of polysilicate class coagulating agent, cannot say for sure the problem of depositing.
Therefore, the object of the present invention is to provide a kind of fast, the method for on-site preparation polysilicate class coagulating agent.
The object of the present invention is achieved like this:
A kind of poly-silicic acid class coagulating agent of handling the polymer flooding oily(waste)water, be prepared from as follows: will cross the silicate minerals of 50-200 mesh sieve and solid alkali and zinc compound and under solid-state, mix, at 500 ~ 800 ℃ of following roasting 2-6h, sinter is put into 5% sulphuric acid soln acidleach 1.5-2.5h after taking out, and namely gets behind the ageing 24h to contain zinc polysilicate class compound coagulant.
Preferably, described silicate minerals is selected from following one or more: kaolin, flyash, coal gangue or aluminosilicate clays.
The hybrid mode of silicate minerals and alkali and zinc compound is selected a kind of in following for use: ball milling, grinding or mix under the condition that dehydrated alcohol exists.
The preparation method of the polysilicate class compound coagulant that compared with prior art, the present invention relates to has following advantage and obvious improvement:
(1) uses directly synthetic polysilicate coagulant of solid compounds, can directly prepare at the scene, gelling in the poly-silicic acid class coagulating agent transportation of avoiding and losing efficacy;
(2) compare with the poly-aluminium of routine, poly-iron coagulating agent, the composition that not only contains poly-aluminium, poly-iron in the prepared compound coagulant also contains composition poly-silicic acid and zine ion, through verification experimental verification repeatedly, under the same terms, this coagulating agent is better than the coagulation effect of poly-aluminium, poly-iron.
Embodiment
Below be concrete embodiment of the present invention, technical scheme of the present invention is further described, but protection scope of the present invention is not limited to these embodiment.Every do not deviate from the change of the present invention design or be equal to substitute include within protection scope of the present invention.
The present invention prepares the principle that the solid single stage method prepares polysilicate class coagulating agent and is: the main component in the silicate minerals is silicon oxide, aluminum oxide, ferric oxide, it becomes acid-soluble reactive sintering thing through modification by calcination, and sinter polymerization reaction take place under acidic conditions namely obtains the polysilicate compound coagulant.
The poly-silicic acid compound coagulant of embodiment 1 modifying kaolin single stage method preparation
Will be through the kaolin 4g of 60 mesh sieves, zinc oxide 1g, sodium hydroxide 4g mixes in dehydrated alcohol, and in 500 ℃ of following roasting 2h, in 100mL, polymerization 2.5h in 5% sulphuric acid soln namely gets the polysilicate compound coagulant behind the ageing 24h.
Embodiment 2 polysilicate class compound coagulants are used for the processing of oil field waste
Get certain oil field waste, with poly-silicic acid compound coagulant and the polymerize aluminum chloride of preparation, bodied ferric sulfate carries out coagulating treatment to it, measures residual COD and the oil-containing value of water outlet, and result sees Table 1:
The COD that table 1 water outlet is residual and oil-containing value
Embodiment 3 will be through the kaolin 4g of 200 mesh sieves, zinc oxide 1g, and sodium hydroxide 4g mixes in dehydrated alcohol, and in 800 ℃ of following roasting 6h, in 100mL, polymerization 1.5h in 5% sulphuric acid soln namely gets the polysilicate compound coagulant behind the ageing 24h.
Embodiment 4 polysilicate class compound coagulants are used for the processing of oil field waste
Get certain oil field waste, under identical coagulation condition, with poly-silicic acid compound coagulant and the polymerize aluminum chloride of preparation, bodied ferric sulfate carries out coagulating treatment to it, measures residual COD and the oil-containing value of water outlet, and result sees Table 2:
The COD that table 2 water outlet is residual and oil-containing value
The result shows that under identical coagulation condition, the polysilicate coagulant treatment effect for preparing by this method is better than bodied ferric sulfate and polymerize aluminum chloride.
Claims (5)
1. one kind is used the poly-silicic acid class compound coagulant of solid silicate material preparation, it is characterized in that being prepared from as follows: silicate minerals is crushed into powder and sieves, mix with alkali and zinc compound by a certain percentage, in retort furnace, calcine, take out calcined material, in sulphuric acid soln, stir certain hour, namely get poly-silicic acid class compound coagulant.
2. the described grit number excessively according to claim 1 is 50 ~ 200 orders, and calcining temperature is 500 ~ 800 ℃, and calcination time is 2 ~ 6h.
3. the described churning time according to claim 1 is 1.5 ~ 2.5h.
4. according to the described solid silicate material of claim 1, comprise following one or more: kaolin, flyash, coal gangue or aluminosilicate clays.
5. to require described alkali can be sodium hydroxide or calcium hydroxide to right 1, and zinc compound can be zinc oxide, zinc chloride or zinc sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102638493A CN103288195A (en) | 2013-06-28 | 2013-06-28 | Method for preparing polysilicate composite coagulant from solid mineral by one-step process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102638493A CN103288195A (en) | 2013-06-28 | 2013-06-28 | Method for preparing polysilicate composite coagulant from solid mineral by one-step process |
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| CN103288195A true CN103288195A (en) | 2013-09-11 |
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| CN2013102638493A Pending CN103288195A (en) | 2013-06-28 | 2013-06-28 | Method for preparing polysilicate composite coagulant from solid mineral by one-step process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830240A (en) * | 2017-01-10 | 2017-06-13 | 太原理工大学 | A kind of method of utilization bastard coal ground mass flocculant process black water |
| CN111453860A (en) * | 2020-05-26 | 2020-07-28 | 袁中帮 | Coal washing wastewater treatment process |
| CN111573984A (en) * | 2020-05-26 | 2020-08-25 | 袁中帮 | Coal washing wastewater treatment system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6447413A (en) * | 1987-08-13 | 1989-02-21 | Daiei Sangyo Kaisha Ltd | Sol type flocculating agent |
| CN101525174A (en) * | 2009-04-17 | 2009-09-09 | 上海应用技术学院 | Compound coagulant made from fly ash and preparation method and application thereof |
| CN101948143A (en) * | 2010-10-26 | 2011-01-19 | 山西阳煤丰喜肥业(集团)有限责任公司 | Method for preparing poly-silicate aluminum ferric chloride from fly ash |
-
2013
- 2013-06-28 CN CN2013102638493A patent/CN103288195A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6447413A (en) * | 1987-08-13 | 1989-02-21 | Daiei Sangyo Kaisha Ltd | Sol type flocculating agent |
| CN101525174A (en) * | 2009-04-17 | 2009-09-09 | 上海应用技术学院 | Compound coagulant made from fly ash and preparation method and application thereof |
| CN101948143A (en) * | 2010-10-26 | 2011-01-19 | 山西阳煤丰喜肥业(集团)有限责任公司 | Method for preparing poly-silicate aluminum ferric chloride from fly ash |
Non-Patent Citations (2)
| Title |
|---|
| 《精细石油化工进展》 20101130 王欢等 "聚硅酸铝锌絮凝剂的制备及应用于含油废水处理" 第11卷, 第11期 * |
| 王欢等: ""聚硅酸铝锌絮凝剂的制备及应用于含油废水处理"", 《精细石油化工进展》, vol. 11, no. 11, 30 November 2010 (2010-11-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830240A (en) * | 2017-01-10 | 2017-06-13 | 太原理工大学 | A kind of method of utilization bastard coal ground mass flocculant process black water |
| CN111453860A (en) * | 2020-05-26 | 2020-07-28 | 袁中帮 | Coal washing wastewater treatment process |
| CN111573984A (en) * | 2020-05-26 | 2020-08-25 | 袁中帮 | Coal washing wastewater treatment system |
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Application publication date: 20130911 |