CN105174520A - Oil removal treatment method for acidic water - Google Patents
Oil removal treatment method for acidic water Download PDFInfo
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- CN105174520A CN105174520A CN201510639633.1A CN201510639633A CN105174520A CN 105174520 A CN105174520 A CN 105174520A CN 201510639633 A CN201510639633 A CN 201510639633A CN 105174520 A CN105174520 A CN 105174520A
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Abstract
The invention belongs to the environmental protection field and the oil-water separation technology, and particularly relates to an oil removal treatment method for acidic wastewater in an oil refinery. The method comprises steps as follows: Step 1, homogeneous oil collection and sludge discharge treatment is performed on the acidic wastewater; Step 2, the wastewater subjected to homogeneous oil collection and sludge discharge treatment is boosted; Step 3, cyclone oil removal is performed on oily wastewater, and the treated acidic water enters a stripping tower. According to the oil removal treatment method for the acidic water, the homogenous floating oil collection and cyclone oil-water separation combined two-stage serial oil removal technology is adopted, the oil content of discharged water after separation and precipitation is not higher than 100 mg/L, the moisture content of discharged oil is not higher than 30%, and the oil content of the discharged water is not higher than 50 mg/L after the discharged water is subjected to oil-water separation by a cyclone oil-water separator.
Description
Technical field
The invention belongs to field of Environment Protection oily water separation technique, be specifically related to a kind of refinery acid waste water oil removal treatment method.
Background technology
Refinery can produce a large amount of sour water in normal productive process, and these sour waters contain the pollutents such as a large amount of suspended solids, sump oil, oil gas, so after having to pass through pre-treatment, just can enter soul water stripper and do further process.In the industry for the pretreated mode of sour water, although among some designing institute and refinery exploring and improving, and some are being had to be worth the successful experiences used for reference in local.But in general, also there is no ripe complete technique at present.The sour water pre-treatment facility of domestic each refinery is multifarious, in production run process or between turn(a)round, occurred some problems in varying degrees, and its topmost problem is exactly that de-oiling effect is undesirable.
Summary of the invention
The invention provides a kind of safe and reliable, running maintenance is easy, deoiling effect is desirable a kind of Acidulous water oil removing treatment process.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of Acidulous water oil removing treatment process, it is characterized in that, the method comprises the steps:
Step 1: acid waste water is carried out homogeneous and receive oil and spoil disposal process;
Step 2: the waste water after homogeneous is received oil and spoil disposal process carries out pressure-raising;
Step 3: oily(waste)water is carried out cyclone deoiling, the sour water admission stripper after process.
Homogeneous in described step 1 is received oil and is realized tank inner top received oil work by the homogeneous oil recovery appts. that floats, and the mud that described spoil disposal process will be deposited at the bottom of tank by mud discharge machine at the bottom of tank is discharged.
Waste water in described step 2 carries out pressure-raising by topping-up pump.
Oily(waste)water in described step 3 carries out cyclone deoiling by oil-water separator.
Beneficial effect of the present invention is as follows:
A kind of Acidulous water oil removing treatment process provided by the invention, homogeneous floating oil is adopted to be separated the two-stage tandem oil removing process combined with rotational flow oil-water, first by average float oil recovery appts. remove oil slick, after precipitation separation, discharge water oleaginousness be not more than 100mg/L, fuel-displaced water ratio is not more than 30%, after water outlet carries out fluid separation by oil-water separator again, water outlet oleaginousness is not more than 50mg/L.
Embodiment
A kind of Acidulous water oil removing treatment process provided by the invention, homogeneous floating oil is adopted to be separated the two-stage tandem oil removing process combined with rotational flow oil-water, first by average float oil recovery appts. remove oil slick, after precipitation separation, discharge water oleaginousness be not more than 100mg/L, fuel-displaced water ratio is not more than 30%, after water outlet carries out fluid separation by oil-water separator again, water outlet oleaginousness is not more than 50mg/L, and concrete steps are as follows:
Step 1: sour water is entered homogeneous by pipeline and to float oil recovery appts., sour water from homogeneous float oil recovery appts. water inlet pipe ejection, realize homogeneous function, oil is assembled in the middle of the water surface, and discharged by oil recovery appts., the discharge water oleaginousness after precipitation separation is not more than 100mg/L, fuel-displaced water ratio is not more than 30%, while receipts oil, in tank, mud is constantly settled down at the bottom of tank, and mud is by outside mud discharge machine drain tank.
Step 2: the waste water after homogeneous is received oil and spoil disposal process carries out pressure-raising through topping-up pump, then enters oil-water separator, and described topping-up pump adopts speed control by frequency variation, and its pressure increased value is 0.40-0.80MPa.
Step 3: oil-water mixture, under certain pressure differential, forms helicoidal flow.Through contraction chamber, the contraction of tail bone two-stage of oil-water separator 3, make fluid speedup and the centrifugal field that formation one is stable in eddy flow tank, in oil-water mixture, light oil mutually then assembles formation wick to the center of cyclone pipe, discharge from overflow port, heavy phase water thrown under powerful centrifugal action cyclone pipe inwall helically state discharge from underflow opening, enter stripping tower.
Should be appreciated that specific embodiment described above only for explaining the present invention, being not intended to limit the present invention.Still be among protection scope of the present invention by spirit institute's apparent change of extending out of the present invention or change.
Claims (4)
1. an Acidulous water oil removing treatment process, is characterized in that, the method comprises the steps:
Step 1: acid waste water is carried out homogeneous and receive oil and spoil disposal process;
Step 2: the waste water after homogeneous is received oil and spoil disposal process carries out pressure-raising;
Step 3: oily(waste)water is carried out cyclone deoiling, the sour water admission stripper after process.
2. a kind of Acidulous water oil removing treatment process according to claim 1, it is characterized in that: the homogeneous in described step 1 is received oil and realized tank inner top receipts oil by the oil recovery appts. that floats, and the mud be deposited at the bottom of tank is discharged by mud discharge machine at the bottom of tank by described spoil disposal process.
3. a kind of Acidulous water oil removing treatment process according to claim 1, is characterized in that: the waste water in described step 2 carries out pressure-raising by topping-up pump, and described topping-up pump adopts speed control by frequency variation.
4. a kind of Acidulous water oil removing treatment process according to claim 1, is characterized in that: the oily(waste)water in described step 3 carries out cyclone deoiling by oil-water separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639633.1A CN105174520A (en) | 2015-09-30 | 2015-09-30 | Oil removal treatment method for acidic water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639633.1A CN105174520A (en) | 2015-09-30 | 2015-09-30 | Oil removal treatment method for acidic water |
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| Publication Number | Publication Date |
|---|---|
| CN105174520A true CN105174520A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510639633.1A Pending CN105174520A (en) | 2015-09-30 | 2015-09-30 | Oil removal treatment method for acidic water |
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| CN (1) | CN105174520A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540900A (en) * | 2016-03-03 | 2016-05-04 | 华东理工大学 | Method and device for treating alkylated waste acid and recovering organic phase |
| CN107935212A (en) * | 2017-11-03 | 2018-04-20 | 武汉工程大学 | Automatic oil-water separation method and device |
| WO2020001246A1 (en) * | 2018-06-29 | 2020-01-02 | 上海米素环保科技有限公司 | Method and apparatus for degassing and oil removal of acidic water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353207A (en) * | 2008-08-28 | 2009-01-28 | 华东理工大学 | Acidulous water oil removing decoking method and apparatus |
| WO2011121619A1 (en) * | 2010-03-29 | 2011-10-06 | Abb S.P.A. | Water treatment process for oil and gas fields produced water |
| CN202022770U (en) * | 2011-05-10 | 2011-11-02 | 山东智博格瑞环保科技有限公司 | Floating water distribution homogenizing oil recovery device |
| CN203247154U (en) * | 2013-04-16 | 2013-10-23 | 北京东展科博科技股份有限公司 | Device for treating highly-emulsified oily acidic water through refining |
-
2015
- 2015-09-30 CN CN201510639633.1A patent/CN105174520A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353207A (en) * | 2008-08-28 | 2009-01-28 | 华东理工大学 | Acidulous water oil removing decoking method and apparatus |
| WO2011121619A1 (en) * | 2010-03-29 | 2011-10-06 | Abb S.P.A. | Water treatment process for oil and gas fields produced water |
| CN202022770U (en) * | 2011-05-10 | 2011-11-02 | 山东智博格瑞环保科技有限公司 | Floating water distribution homogenizing oil recovery device |
| CN203247154U (en) * | 2013-04-16 | 2013-10-23 | 北京东展科博科技股份有限公司 | Device for treating highly-emulsified oily acidic water through refining |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540900A (en) * | 2016-03-03 | 2016-05-04 | 华东理工大学 | Method and device for treating alkylated waste acid and recovering organic phase |
| CN107935212A (en) * | 2017-11-03 | 2018-04-20 | 武汉工程大学 | Automatic oil-water separation method and device |
| WO2020001246A1 (en) * | 2018-06-29 | 2020-01-02 | 上海米素环保科技有限公司 | Method and apparatus for degassing and oil removal of acidic water |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |