CN102276030A - Composite coagulant for treatment of oilfield produced water - Google Patents
Composite coagulant for treatment of oilfield produced water Download PDFInfo
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- CN102276030A CN102276030A CN2011101285404A CN201110128540A CN102276030A CN 102276030 A CN102276030 A CN 102276030A CN 2011101285404 A CN2011101285404 A CN 2011101285404A CN 201110128540 A CN201110128540 A CN 201110128540A CN 102276030 A CN102276030 A CN 102276030A
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- China
- Prior art keywords
- pam
- produced water
- pac
- compound coagulant
- treatment
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of oilfield produced water treatment, and particularly relates to a composite coagulant for treatment of oilfield produced water. The composite coagulant is characterized by being prepared from the following raw materials: PAC, PAM with molecular weight of 8000000 and water in a weight ratio of (28-32):(0.8-1.2):(4-6)*10<5>, wherein PAC is poly(aluminum chloride), has a molecular formula of [Al2(OH)nCl6-n]m, n and m are natural numbers, n = 3-5 and m <= 10; and PAM is polyacrylamide. The composite coagulant has the characteristics of obvious coagulation effect and low cost.
Description
Technical field
The present invention relates to oil field produced water treatment field, particularly a kind of oil field produced water treatment compound coagulant.
Background technology
Oil field produced water treatment system adopts the physical method oil removing more, removes suspended substance, sump oil and suspended substance very major part are suspended in the water body and can't remove by post precipitation, needing to add coagulating agent can remove its coalescent change rear area, but the removal effect of existing coagulating agent is not obvious or to add dose bigger, can not satisfy the basic demand of oil field produced water treatment.
Summary of the invention
The purpose of this invention is to provide a kind of oil field produced water treatment compound coagulant, its coagulation effect is good, and oil removing, to remove the suspended substance effect obvious, and consumption is few, and is cheap.
The object of the present invention is achieved like this, and a kind of oil field produced water treatment compound coagulant is characterized in that: it is to be made by following weight ratio by following raw material: PAC: molecular weight is 8,000,000 PAM: water=28-32:0.8-1.2:4-6 * 10
5Described PAC is a polymerize aluminum chloride, and molecular formula is AL
2(OH)
nCL
6-n]
m, wherein, n and m are natural number, n=3-5, m≤10; Described PAM is a polyacrylamide.
The best proportioning of described a kind of oil field produced water treatment compound coagulant is to be made by following weight ratio by following raw material: PAC: molecular weight is 8,000,000 PAM: water=30:1:5 * 10
5
Described compound coagulant is solid state powder shape or liquor.
Characteristics of the present invention are:
1) water treatment of Oilfield using compound coagulant of the present invention is effective, works as PAC: molecular weight is 8,000,000 PAM: water=30:1:5 * 10
5The time, treatment effect is best, and supernatant liquor suspended substance (SS) is reduced to 12mg/L by 108, and oleaginousness is reduced to 8.55 mg/L by 27.25 mg/L.
2) coagulation effect is obvious, and oil removal efficiency is about 88%, removes suspended substance (SS) efficient and is about more than 68.6%.
3) cheap.
Embodiment
The present invention will be further described below in conjunction with embodiment, but not as a limitation of the invention.
Embodiment 1
Get the PAC of 28g, get the 0.8g molecular weight and be 8,000,000 PAM, the water of 400L carries out composite mixing, promptly gets compound coagulant of the present invention; Described PAC is a polymerize aluminum chloride, and molecular formula is AL
2(OH)
nCL
6-n]
m, wherein, n and m are natural number, n=3-5, m≤10; Described PAM is a polyacrylamide.
Embodiment 2
Get the PAC of 32g, get the 1.2g molecular weight and be 8,000,000 PAM, the water of 600L carries out composite mixing, promptly gets compound coagulant of the present invention; Described PAC is a polymerize aluminum chloride, and molecular formula is AL
2(OH)
nCL
6-n]
m, wherein, n and m are natural number, n=3-5, m≤10; Described PAM is a polyacrylamide.
Embodiment 3
Get the PAC of 30g, get the 1g molecular weight and be 8,000,000 PAM, the water of 500L carries out composite mixing, promptly gets compound coagulant of the present invention; Described PAC is a polymerize aluminum chloride, and molecular formula is AL
2(OH)
nCL
6-n]
m, wherein, n and m are natural number, n=3-5, m≤10; Described PAM is a polyacrylamide.
Compound coagulant of the present invention is solid state powder shape or liquor.
When PAC and molecular weight are 8,000,000 PAM when directly carrying out composite mixing by weight 28-32:0.8-1.2, compound coagulant is solid-state powder.
Test effect:
Get compound coagulant of the present invention with adopting PAM to adopt molecular weight 4,000,000 to compare as follows under the same conditions in conventional flocculation agent and the compound coagulant:
The conventional flocculation agent treatment effect of table 1
| pH | When being untreated 8.0 | 6.0 | 6.0 | 6.0 |
| Oleaginousness (mg/L) | 27.25 | 16.0 | 15.5 | 13.6 |
| SS（mg/L） | 108.00 | 52.00 | 50.00 | 51.00 |
PAM employing molecular weight in table 2 compound coagulant of the present invention is 4,000,000 flocculating experiment
| ? | When being untreated | Adopt the proportioning of embodiment 1 | Adopt the proportioning of embodiment 2 | Adopt the proportioning of embodiment 3 |
| Flocculation back pH | 8.0 | 7.0 | 7.0 | 7.0 |
| Oleaginousness (mg/L) | 27.25 | 10.85 | 8.91 | 7.89 |
| SS（mg/L） | 108.00 | 68.00 | 64.00 | 60.00 |
Table 3 adopts the flocculating experiment of compound coagulant of the present invention
| ? | When being untreated | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| pH | 8.0 | 7 | 7 | 7 |
| Oleaginousness (mg/L) | 27.25 | 8.55 | 8.11 | 7.90 |
| SS（mg/L） | 108.00 | 13.5 | 13.00 | 12.00 |
Water treatment by table 1,2,3 visible employings compound coagulant of the present invention is effective, and oil removal efficiency is about 88%, and remove suspended substance (SS) efficient and be about more than 68.6%, wherein, the best results of embodiment 3.
Claims (3)
1. oil field produced water treatment compound coagulant, it is characterized in that: it is to be made by following weight ratio by following raw material: PAC: molecular weight is 8,000,000 PAM: water=28-32:0.8-1.2:4-6 * 10
5Described PAC is a polymerize aluminum chloride, and molecular formula is AL
2(OH)
nCL
6-n]
m, wherein, n and m are natural number, n=3-5, m≤10; Described PAM is a polyacrylamide.
2. a kind of oil field produced water treatment compound coagulant according to claim 1, it is characterized in that: it is to be made by following weight ratio by following raw material: PAC: molecular weight is 8,000,000 PAM: water=30:1:5 * 10
5
3. a kind of oil field produced water treatment compound coagulant according to claim 1, it is characterized in that: described compound coagulant is solid state powder shape or liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101285404A CN102276030A (en) | 2011-05-18 | 2011-05-18 | Composite coagulant for treatment of oilfield produced water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101285404A CN102276030A (en) | 2011-05-18 | 2011-05-18 | Composite coagulant for treatment of oilfield produced water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102276030A true CN102276030A (en) | 2011-12-14 |
Family
ID=45101832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101285404A Pending CN102276030A (en) | 2011-05-18 | 2011-05-18 | Composite coagulant for treatment of oilfield produced water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102276030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616905A (en) * | 2012-04-06 | 2012-08-01 | 厦门市大净环保科技有限公司 | Organic and inorganic composite high-efficiency flocculating agent and preparation method thereof |
| CN107311259A (en) * | 2016-10-19 | 2017-11-03 | 烟台智本知识产权运营管理有限公司 | A kind of binary combination flooding output water degreaser and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115742A (en) * | 1994-07-27 | 1996-01-31 | 华南师范大学 | Wet dedusting and sewage purifying method for coal-burning industrial boiler |
| CN1125198A (en) * | 1994-12-20 | 1996-06-26 | 华南师范大学 | Purifying method of waste water produced in course of production of wallor floor tile |
| CN1850647A (en) * | 2005-04-22 | 2006-10-25 | 中国科学院生态环境研究中心 | Method for preparing composite coagulating agent for water supply reinforcing coagulating treatment |
-
2011
- 2011-05-18 CN CN2011101285404A patent/CN102276030A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115742A (en) * | 1994-07-27 | 1996-01-31 | 华南师范大学 | Wet dedusting and sewage purifying method for coal-burning industrial boiler |
| CN1125198A (en) * | 1994-12-20 | 1996-06-26 | 华南师范大学 | Purifying method of waste water produced in course of production of wallor floor tile |
| CN1850647A (en) * | 2005-04-22 | 2006-10-25 | 中国科学院生态环境研究中心 | Method for preparing composite coagulating agent for water supply reinforcing coagulating treatment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616905A (en) * | 2012-04-06 | 2012-08-01 | 厦门市大净环保科技有限公司 | Organic and inorganic composite high-efficiency flocculating agent and preparation method thereof |
| CN102616905B (en) * | 2012-04-06 | 2013-10-16 | 厦门市大净环保科技有限公司 | Organic and inorganic composite high-efficiency flocculating agent and preparation method thereof |
| CN107311259A (en) * | 2016-10-19 | 2017-11-03 | 烟台智本知识产权运营管理有限公司 | A kind of binary combination flooding output water degreaser and preparation method thereof |
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Application publication date: 20111214 |