WO2009016766A1 - 炭素系油吸着材の再生方法 - Google Patents
炭素系油吸着材の再生方法 Download PDFInfo
- Publication number
- WO2009016766A1 WO2009016766A1 PCT/JP2007/065214 JP2007065214W WO2009016766A1 WO 2009016766 A1 WO2009016766 A1 WO 2009016766A1 JP 2007065214 W JP2007065214 W JP 2007065214W WO 2009016766 A1 WO2009016766 A1 WO 2009016766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- adsorbent
- water
- treatment
- carbon
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28059—Surface area, e.g. B.E.T specific surface area being less than 100 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Definitions
- the present invention relates to a method for regenerating a carbon-based oil adsorbent. More specifically, the present invention relates to a method for regenerating a carbon-based oil adsorbent used to treat oil-containing wastewater and adsorbed oil.
- Industrial wastewater and household wastewater often contain oil.
- oil refined wastewater is discharged from various facilities at refineries.
- wastewater containing oils and fats is discharged from vegetable oil manufacturing plants when soybean oil, rapeseed oil, corn oil, etc. are manufactured.
- water-soluble cutting oil (mineral oil) is used for cooling and lubrication of the cutting surface in manufacturing plants that use many machine tools such as automobile factories, and wastewater containing this water-soluble mineral oil is used. Water may be discharged from the manufacturing plant.
- relatively high concentrations of oil-containing wastewater derived from animal and vegetable oils are discharged from food factories, hotels and restaurants. Therefore, when treating these oil-containing wastewater, it is necessary to remove the oil from the wastewater.
- activated carbon As a means for removing oil from wastewater, activated carbon has been used more than ever. However, when activated carbon is used for wastewater treatment, regeneration for adsorption of a small amount of oil can be backwashed with industrial water, but if a large amount of oil is adsorbed, the activated carbon is extracted from the facility, There was no choice but to perform a costly regeneration method such as steam activation. For this reason, even when a large amount of oil is adsorbed, a method of regenerating the adsorbent 1: without removing it from the equipment has been strongly desired. [Disclosure of the Invention]
- the present invention has been made in view of such a situation, and uses a specific carbon-based oil adsorbent as the oil adsorbent, and the carbon-based oil adsorbent adsorbed with the oil by a specific method.
- the cleaning process can be performed without extracting the oil adsorbent from the oil adsorption processing facility, and a method with excellent cleaning efficiency is provided. That is, the present invention provides a carbon-based oil adsorbent composed of calcined coatus that has adsorbed oil,
- the present invention relates to a method for regenerating a carbon-based oil adsorbent characterized by washing with hot water at 40 ° C or higher or hot water at 40 ° C or higher including bubbling with bubbles.
- the present invention is a calcined coke having a specific surface area of 20 m 2 Zg or less obtained by calcining the coatus at 100 ° C. to 1500 ° C.
- the carbon-based oil adsorbent used in the present invention comprises calcined coke obtained by calcining a carbonaceous material.
- the carbonaceous material used as a raw material is not particularly limited, but from the viewpoint of imparting surface characteristics such that water is easily desorbed and oil is easily adsorbed to the oil adsorbent obtained by calcination.
- Nonporous materials such as coatas and graphite (including expanded graphite) are preferably used, and coatus is particularly preferred.
- the coatas preferably used in the present invention are not particularly limited, and are heavy oils such as atmospheric residual oil, vacuum residual oil, tar sand, bitumen, shale oil, fluid catalytic cracking equipment residual oil, coal tar, coal tar pitch.
- Examples include coal-based or petroleum-based coke that can be obtained from raw materials, and charcoal-based cotas that can be obtained using wood, sawdust, coconut, etc. as raw materials. One of these raw materials may be used alone, or two or more of these raw materials may be used in combination.
- the coking process for producing coke is not particularly limited, and a fluid coking process, a flexi coking process, a delayed coking process, etc. can be applied.
- the heat treatment temperature in the coking process is usually 400 to 600 ° C.
- a needle coat obtained through a delayed coking process is preferably used.
- the treatment temperature at the time of calcination of the carbonaceous material is preferably in the range of 10:00 to 1500 ° C, more preferably 1200 to 1450 ° C, more preferably 1 3 0 0 to 1 4 0 0 ° C. If the treatment temperature is less than 100 ° C., sufficient hydrophobicity cannot be imparted to the surface of the resulting oil adsorbent. On the other hand, the processing temperature is 1 5 0 0 ° C In the case of exceeding the above, it is easy to desorb water on the surface of the obtained oil adsorbing material and adsorb oil, and it becomes difficult to achieve a hydrophilic-hydrophobic balance.
- the treatment time for calcination is preferably 1 minute to 5 hours, more preferably 5 minutes to 3 hours.
- the rate of temperature increase when the temperature is raised to the treatment temperature is 180 to 220 ° C / h.
- a horizontal calcining device such as a rotary kiln or a vertical calcining device such as a rotary hammer (rotary hearth calsiner) is used.
- a horizontal calcining device such as a rotary kiln or a vertical calcining device such as a rotary hammer (rotary hearth calsiner) is used.
- a rotary hammer rotary hearth calsiner
- the atmosphere for calcination is not particularly limited as long as polar groups can be removed from the surface of the carbonaceous material, but it is preferably performed in an inert gas atmosphere such as nitrogen.
- the temperature near the outlet of the calciner is set to 500 ° C. in terms of preventing oxidation of the calcined coat and suppressing the formation of polar groups. C or less is preferable, and 300 ° C. or less is more preferable.
- the cooling method is not particularly limited, and natural cooling may be performed by leaving it alone. However, forced cooling by water cooling is preferable from the viewpoint of further improving the processing efficiency.
- BET surface area of the resulting calcined coke is normally 2 O n ⁇ Z or less, preferably 1 to 10 m 2 / g.
- the calcined coke used in the present invention has a smaller surface area than conventional activated carbon and activated coatus.
- the adsorbent composed of such calcined coatus exhibits a higher adsorbing ability for oil in the oil-containing wastewater than conventional activated carbon or activated coke.
- the adsorptive capacity of the adsorbent of the present invention is due to the characteristics of the surface modified by calcination.
- the method for bringing the carbon-based oil adsorbent made of calcined coke used in the present invention (hereinafter also referred to as the present adsorbent) into contact with the oil-containing wastewater is not particularly limited.
- activated carbon used in conventional wastewater treatment A method of filling this adsorbent in a treatment tank similar to the adsorption tank and passing the oil-containing wastewater into the treatment tank can be mentioned.
- treatment conditions such as the adsorbent filling amount, water flow rate, and treatment temperature can be selected as appropriate in consideration of the adsorbent adsorption capacity and the oil content in the wastewater.
- the water flow is either downward or upward flow. However, the downward flow is preferred because the adsorbent can be easily regenerated by backwashing (upflow).
- this adsorbent when this adsorbent is filled in a treatment tank and oil-containing wastewater is passed through, filtration, microorganisms are used to remove other substances such as suspended solids (SS), COD, and BOD contained in the oil-containing wastewater. It may be combined with treatment means such as treatment, coagulation precipitation, chemical oxidation (such as ozone oxidation).
- treatment means such as treatment, coagulation precipitation, chemical oxidation (such as ozone oxidation).
- SS when substances such as SS that adsorb to carbonaceous materials are contained in oil-containing wastewater, SS should be removed by sand filtration before bringing the wastewater into contact with this adsorbent. Is preferred. If waste water containing S S is brought into contact with the adsorbent as it is, the adsorption capacity of the adsorbent may be impaired by the S S.
- the carbon-based oil adsorbent comprising calcined coke adsorbed with oil as described above is washed with hot water at 40 ° C. or higher or warm water at 40 ° C. or higher including bubbles. Play by.
- heated water is used as washing water during regeneration for the purpose of reducing the viscosity of the oil.
- the temperature of the washing water is 40 ° C. or higher, and more preferably 60 to 100 ° C.
- the desorption efficiency of oil or the like can be further promoted by the action of bubbles.
- the adsorbent according to the present invention adsorbs oil
- the adsorbent used is mainly equivalent to macropores 50 n rr! It has a structure consisting of large pores and cracks of ⁇ 300 ⁇ m, and has a structure different from the conventional product with a specific surface area of 20 m 2 Zg or less. And for this reason, It is assumed that the contact between the washing water and the adsorbed oil during regeneration occurs more easily than in the case of activated charcoal mainly composed of micropores.
- the washing (regeneration) treatment can be performed without extracting the oil adsorbent from the oil adsorption treatment facility.
- the flow direction of the washing water may be either a downward flow or an upward flow, but backwashing (upflow) is preferred from the viewpoint of easy regeneration of the adsorbent.
- the type of cleaning treatment is not particularly limited as long as it can perform warm water cleaning at 40 ° C or higher, or hot water cleaning at 40 ° C or higher including bubble publishing. But it can also be done on a flow-through basis.
- the gas amount Z washing water ratio is normally set to a volume ratio of 0.01 to 10 volume, preferably 0.1 volume ratio or more can be adopted.
- a porous dispersion plate or the like may be installed below the packed bed if necessary.
- the method of the present invention has an extremely high industrial value because the oil adsorbent can be regenerated without removing the adsorbent from the oil adsorption treatment equipment even when the oil content is high.
- needle coke (S—JA calcined powder coke) is heated to 1300 ° C at a heating rate of about 3-4 ° CZ for 4 hours at 1300 ° C. Calcined did. Then, forced cooling by water cooling was performed, and the calciner outlet temperature was maintained at 120 ° C to obtain calcined coke with a BET surface area of 3 m 2 // g.
- this calcined coke is packed into a column (capacity: 1550 cc) and water containing oil is allowed to flow until the calcined coke breaks through, the amount of oil finally adsorbed is 4 5 0. 0 Omg / L.
- Example 1 From the bottom of the calcined coke packed bed, nitrogen was allowed to flow at 100 cc / min while publishing nitrogen, and cleaning water at 60 ° C was moved upward at a speed of 100 cc / min.
- the regeneration treatment was performed in the same manner as in Example 1 except that water was passed, the amount of residual oil in the regeneration adsorbent was 1500 mgZL.
- the oil desorption rate was 97%, and an excellent effect by steam bubbling was recognized.
- Example 1 when the regeneration treatment was performed in the same manner as in Example 1 except that the temperature of the washing water was changed to 100 ° C, the amount of residual oil in the regenerated adsorbent was 4 OO Om gZL. It was. The oil desorption rate was 91%, and the effect of increasing the temperature of the wash water was recognized.
- Example 1 waste water treatment was performed in the same manner as in Example 1 except that washing water at 100 ° C. was passed through while steam publishing.
- the amount of residual oil in the regenerated adsorbent was 40 Omg / L.
- the oil desorption rate was 99%, indicating extremely excellent desorption ability. Comparative Example 1>
- Example 1 regeneration treatment was performed in the same manner as in Example 1 except that the temperature of the washing water was 20 ° C. As a result, the amount of residual oil in the regenerated adsorbent was 15 4400 mgZL. became. The oil desorption rate was 66%, and the desorption ability was inferior to that of Example 1. ⁇ Comparative Example 2>
- Example 1 when the regeneration treatment was performed in the same manner as in Example 1 except that the temperature of the washing water was changed to 30 ° C., the amount of residual oil in the regenerated adsorbent was 14000 mg / L. The oil desorption rate was 69%, and the desorption ability was inferior to that of Example 1.
- activated carbon as an adsorbent (trade name: Dazai activated carbon GM1 3 OA, manufactured by Futura Chemical Co., Ltd., BET surface area: l OO
- the column was filled with 1 O OmL of this commercially available activated carbon (capacity: 150 mL), and water containing oil was allowed to flow until the activated carbon broke through. L.
- wash water at 30 ° C was passed upward at a rate of 100 cc / min.
- the amount of residual oil in the obtained regenerated activated carbon adsorbent was 52 O OmgZL.
- the oil desorption rate was 66%, and the desorption ability was inferior to the examples.
- Comparative Example 3 regeneration treatment was performed in the same manner as in Comparative Example 3 except that cleaning water was passed through at 60 ° C while steam bubbling. The amount of residual oil in the obtained recycled activated carbon adsorbent was obtained. Became 470 OmgZL. The oil desorption rate was 66%, and the desorption ability was inferior to the examples.
- Tables 1 and 2 The results of Examples 1 to 4 and Comparative Examples 1 to 4 are summarized in Tables 1 and 2.
- Example 4 Using the regenerated adsorbent obtained in Example 1 and Example 4, an adsorption capacity comparison test with a new article was performed. That is, 50 cc of regenerated product and new adsorbent are packed into the column, treated water containing 15 O mg of heavy fuel oil and heavy fuel oil B in 1 liter is passed through 100 cc / min, and the treated water is passed through. The oil content of was measured. The results are shown in Table 3 and Fig. 1.
- Example 3 From Table 3 and Fig. 1, the reclaimed product obtained in Example 1 and Example 4 showed almost the same oil adsorption performance as that of the new calcined coatus, and also showed better adsorption performance than the new activated carbon. . Table 3
- Fig. 1 is a diagram showing the results of a comparative test of the ability to adsorb regenerated and new oil components.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07791888.6A EP2174708A4 (en) | 2007-07-27 | 2007-07-27 | METHOD FOR REGENERATING CARBON OIL ADSORBENT |
CN200780053840.2A CN101784337A (zh) | 2007-07-27 | 2007-07-27 | 碳质油吸附剂的再生方法 |
PCT/JP2007/065214 WO2009016766A1 (ja) | 2007-07-27 | 2007-07-27 | 炭素系油吸着材の再生方法 |
US12/669,055 US20100298116A1 (en) | 2007-07-27 | 2007-07-27 | Method of regenerating carbonaceous oil adsorbent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/065214 WO2009016766A1 (ja) | 2007-07-27 | 2007-07-27 | 炭素系油吸着材の再生方法 |
Publications (1)
Publication Number | Publication Date |
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WO2009016766A1 true WO2009016766A1 (ja) | 2009-02-05 |
Family
ID=40304012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/065214 WO2009016766A1 (ja) | 2007-07-27 | 2007-07-27 | 炭素系油吸着材の再生方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100298116A1 (ja) |
EP (1) | EP2174708A4 (ja) |
CN (1) | CN101784337A (ja) |
WO (1) | WO2009016766A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6358232B2 (ja) * | 2015-11-10 | 2018-07-18 | 住友金属鉱山株式会社 | 活性炭充填塔のメンテナンス方法 |
CN114804404A (zh) * | 2022-03-22 | 2022-07-29 | 河南中孚炭素有限公司 | 一种焙烧湿电含沥青焦油冲洗水无害化处理方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03254883A (ja) * | 1990-03-02 | 1991-11-13 | Aqua Tec Kk | 活性炭吸着による浄水処理方法 |
JPH0679264A (ja) * | 1992-09-02 | 1994-03-22 | Sanden Corp | 浄水装置 |
JPH0810750A (ja) * | 1994-06-27 | 1996-01-16 | Tokyo Gas Co Ltd | 浄水装置 |
JP2000254674A (ja) * | 1999-03-08 | 2000-09-19 | Hitachi Ltd | 水処理方法及びその装置 |
JP2006082062A (ja) * | 2004-09-17 | 2006-03-30 | Nippon Petroleum Refining Co Ltd | 吸着剤及びその製造方法、並びに含油排水の処理方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1633871A (en) * | 1922-09-02 | 1927-06-28 | Contact Filtration Company | Method of revivifying spent adsorbents for oil treatments |
US3840476A (en) * | 1972-06-28 | 1974-10-08 | Exxon Research Engineering Co | Process for activating carbonaceous materials |
CA1010845A (en) * | 1972-06-28 | 1977-05-24 | Exxon Research And Engineering Company | Process for activating fluid coke and its use in purifying waste water |
US4407725A (en) * | 1980-08-21 | 1983-10-04 | International Minerals & Chemical Corp. | Regeneration of activated carbon |
-
2007
- 2007-07-27 WO PCT/JP2007/065214 patent/WO2009016766A1/ja active Application Filing
- 2007-07-27 CN CN200780053840.2A patent/CN101784337A/zh active Pending
- 2007-07-27 US US12/669,055 patent/US20100298116A1/en not_active Abandoned
- 2007-07-27 EP EP07791888.6A patent/EP2174708A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03254883A (ja) * | 1990-03-02 | 1991-11-13 | Aqua Tec Kk | 活性炭吸着による浄水処理方法 |
JPH0679264A (ja) * | 1992-09-02 | 1994-03-22 | Sanden Corp | 浄水装置 |
JPH0810750A (ja) * | 1994-06-27 | 1996-01-16 | Tokyo Gas Co Ltd | 浄水装置 |
JP2000254674A (ja) * | 1999-03-08 | 2000-09-19 | Hitachi Ltd | 水処理方法及びその装置 |
JP2006082062A (ja) * | 2004-09-17 | 2006-03-30 | Nippon Petroleum Refining Co Ltd | 吸着剤及びその製造方法、並びに含油排水の処理方法 |
Also Published As
Publication number | Publication date |
---|---|
US20100298116A1 (en) | 2010-11-25 |
CN101784337A (zh) | 2010-07-21 |
EP2174708A1 (en) | 2010-04-14 |
EP2174708A4 (en) | 2013-06-26 |
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