CN1803654A - Oil-containing dross dehydration process - Google Patents
Oil-containing dross dehydration process Download PDFInfo
- Publication number
- CN1803654A CN1803654A CN200510122936.2A CN200510122936A CN1803654A CN 1803654 A CN1803654 A CN 1803654A CN 200510122936 A CN200510122936 A CN 200510122936A CN 1803654 A CN1803654 A CN 1803654A
- Authority
- CN
- China
- Prior art keywords
- silica frost
- scum silica
- oil
- value
- flocculation agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000018044 dehydration Effects 0.000 title claims description 26
- 238000006297 dehydration reaction Methods 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 11
- 230000008021 deposition Effects 0.000 claims abstract description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 76
- 239000000377 silicon dioxide Substances 0.000 claims description 38
- 238000005189 flocculation Methods 0.000 claims description 22
- 230000016615 flocculation Effects 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 12
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 208000005156 Dehydration Diseases 0.000 description 24
- 239000003814 drug Substances 0.000 description 6
- 230000003750 conditioning effect Effects 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- -1 aluminum ion Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a dewatering technique with chemical regulation and supersonic wave for oil-contained scum. Wherein, after the initial deposition to remove some water, using NaOH or Na2CO3 to regulate the pH value of scum to weak base state; adding flocculant (polyferroaluminium chloride or polyacrylamide) to stir evenly and send to supersonic treatment part for some minutes; then leading into deposition tank or pond to separate scum and water. The treated product can be recovered or send into incinerator for final treatment.
Description
Technical field
The present invention relates to a kind of oil-containing dross dehydration process, relate in particular to a kind of chemical conditioning and ultrasonic synergistic promotion dross dehydration separating technology.
Background technology
Refinery's oil-containing dross is after the flotation cell in the Waste Water From Oil Refining Plant processing workshop section adds flocculation agent, utilization is under high pressure conditions, the a large amount of gases of dissolved discharge countless trickle bubbles in the waste water when sudden pressure reduction, adhere to each other with impurity particle in the process water of hybrid reaction, make the oily(waste)water coagulation air-float, tiny air filled cavity carries the oily sludge come-up and forms oil-containing dross.The water ratio of these scum silica frost is generally 95.5～99.5%.
The ordinary method of oil-containing dross dehydration has biological modulated logos, physical modulated logos and chemical conditioning method etc.The biological modulated logos has carried out biological degradation to scum silica frost, is difficult to burning and can not realizes innoxious completely but handle the back scum silica frost.The physical modulated logos normally carries out sludge elutriation or cold and hot processing, and operation energy consumption is higher, to the processing of waste, and the cost costliness.The chemical conditioning method is to add medicament to make the scum silica frost flocculation dewatering, needs to select suitable flocculation agent kind and dosage usually.This method can be brought secondary pollution to environment again owing to will add chemical agent.
Because the singularity of sewage disposal, the scum silica frost composition and the water ratio of formation differ greatly, and adopt conventional dehydration treatment method, all exist certain limitation, make scum silica frost be difficult to realize innoxious completely and recycling.At present domestic relevant patent has in August, 1997 disclosed CN96114773.3 to tell about the method that a kind of scum silica frost is finally realized harmless treatment, but is difficult to handle for the higher scum silica frost of initial aqueous rate.In May, 2000, invention disclosed patent CN98110574.2 provided a kind of lyophilization partition method, and this method process cost is higher, and difficulty is applied.The patent of invention of the CN02117444.X in November, 2002, formerly acidification realizes breakdown of emulsion, after alkalize and reclaim aluminum ion and realize liquid-solid separation, this method filter-press dehydration poor effect by press filtration.
Summary of the invention
Technical problem to be solved by this invention is the oil-containing dross dehydration novel process that provides a kind of in order to overcome the limitation that above-mentioned technology exists and take off that the back water ratio is low, cost is low, can realize the innoxious and recycling of scum silica frost.
Technical scheme of the present invention is: a kind of oil-containing dross dehydration process, it is characterized in that oil-containing dross adds flocculation agent after the pH value is regulated and after the ultrasonic wave effect of ultrasonic processing apparatus, and enter again and carry out deposition dehydrating in the deposition dehydrating device and separate.Wherein to regulate be that to make the pH value of solution be 7～8 weakly alkaline by adding alkaline matter to the pH value; Described alkaline matter is caustic soda or yellow soda ash.
This technology can be carried out press filtration or centrifugation to scum silica frost behind the deposition dehydrating, further reduces water ratio, and making it can burning disposal or advance coker and realize that resource reclaims.
The adjusting of carrying out the pH value has improved the flocculation efficiency of flocculation agent, can effectively reduce the flocculation agent consumption.Action of ultrasonic waves is condensed the emulsion drop in the scum silica frost under the sound vibration effect, the extreme environment of ultrasonic cavitation generation has simultaneously improved the mass transfer effect of flocculation agent in scum silica frost, and the efficient of flocculation agent is improved.Regulate through the pH value, and after flocculation agent and hyperacoustic synergy, the dehydration rate of scum silica frost is significantly improved, takes off the back water ratio and adopt ordinary method low.If this scum silica frost is carried out filter-press dehydration, water ratio was lower after then scum silica frost took off.To take off the back scum silica frost and send incinerator to burn, realize harmless treatment, reduce environmental pollution.Send coker to handle if will take off the back scum silica frost, not only can realize harmless treatment, reduce environmental pollution, can also obtain distinct economic.
By adding medicament and hyperacoustic synergy, make high moisture scum silica frost realize the purpose of dehydration decrement to the present invention.Characteristic according to scum silica frost has proposed clear and definite treatment process and industrial realization form.
Major equipment required for the present invention comprises medicine system, ultrasonic treatment unit (comprising ultra-sonic generator, transverter and related accessory), precipitation apparatus etc.
Point of the present invention is mainly treatment process technological line and associated process conditions.Reasonable process route and condition are keys of the invention process.
The characteristics of the technology of the present invention are earlier the first sink-float slag through pre-dehydration to be carried out the pH value to regulate, make it to meet the processing requirement that adds flocculation agent, mix after adding an amount of flocculation agent, delivering to ultrasonic processing apparatus (can be tubular type or case structure, make the inner stable even sound field that forms), in even sound field, the sound intensity is 100～1000Wm by processing requirement
-2The following effect certain hour of acoustic condition, at last scum silica frost is delivered in the deposition dehydrating device, realize that dross dehydration separates.Under reasonably pH value, flocculation agent and hyperacoustic synergy, characteristics such as it is low to have a flocculation agent consumption, and dehydrating effect is remarkable, and running cost is low.It is the preferred pretreatment method that high moisture scum silica frost is realized Separation and Recovery, harmless treatment.
The preferred pH value that scum silica frost is regulated among the present invention is 7～8, and the dosage of the flocculation agent ratio of first sink-float slag (add-on with) is aluminium iron polychloride (PAFC) 10～200mgL
-1, polyacrylamide (PAM) 50～1500mgL
-1, the quality of two kinds of flocculation agents composite than (aluminium iron polychloride: be between 1: 2 to 1: 10 polyacrylamide), ultrasonic frequency 10～200kHz, the sound intensity 100～1000Wm
-2, action time 1～60min.According to first sink-float slag character, water ratio and dehydration requirement, determine The reasonable operating conditions.
Refinery of the present invention oil-containing dross dehydration new technology is that chemical conditioning and ultrasonic synergistic promote the dross dehydration isolation technique.The scope of application comprises dehydration separation, the minimizing pre-treatment of oil-gas field, refinery's oil-containing dross and water factory's scum silica frost etc.
Beneficial effect
1.pH after value is regulated, can reduce the dosage of flocculation medicament, save running cost.
2. under flocculation agent and hyperacoustic synergy, can significantly improve the dross dehydration rate, technology is taken off back scum silica frost water ratio generally greater than 70% at present, and can reduce to about 50% after adopting this Technology, reduces the consumption of flocculation agent simultaneously.
3. the lower back water ratio that takes off has reduced the aftertreatment cost of scum silica frost; Created condition for harmless treatment and recycling simultaneously.
Description of drawings
Fig. 1 is a present technique invention scum silica frost treatment technology schema.1 is just heavy jar of scum silica frost among the figure, and 2,8 is visor, and 3,5,9 is transferpump, and 4 is the medicament mixing tank, 6 is ultrasonic treatment unit, and 7 is the deposition dehydrating jar, and 10 is filtration unit (for optional equipment), and A is an effluent sewerage, B is pH regulator agent (alkali), and C is a flocculation agent, and D is for taking off the back scum silica frost.
Original scum silica frost is discharge section water after just heavy tank sedimentation, scum silica frost is carried out earlier the pH value regulate, again adding Learn medicament, mix by ul-trasonic irradiation, under both synergies, the dross dehydration effect is improved, logical Cross the purpose that sedimentation realizes dross dehydration. According to the requirement of scum silica frost post processing, can take off synergy and sedimentation Scum silica frost carries out mechanical filter (such as press filtration, centrifugation) behind the water, further reduces the scum silica frost moisture content.
Embodiment
Embodiment
(1) certain refinery slag water ratio that just rises and falls is 95.0%, uses Na
2CO
3The pH value is adjusted to 7.1, and the amount that adds aluminium iron polychloride and polyacrylamide is respectively 75mgL
-1With 750mgL
-1, 20kHz ultrasonic wave effect 5 minutes, the sound intensity is 500Wm
-2, behind suction filtration, the scum silica frost water ratio is 49.2%, dehydration rate reaches 94.9%.
(2) certain refinery slag water ratio that just rises and falls is 83.8%, uses Na
2CO
3The pH value is adjusted to 7.2, and the amount that adds aluminium iron polychloride and polyacrylamide is respectively 70mgL
-1With 500mgL
-1, 28kHz ultrasonic wave effect 10 minutes, the sound intensity is 480Wm
-2, behind suction filtration, the scum silica frost water ratio is 54.7%, dehydration rate reaches 84.0%.
(3) certain refinery slag water ratio that just rises and falls is 87.5%, with NaOH the pH value is adjusted to 7.9, and the amount that adds aluminium iron polychloride and polyacrylamide is respectively 180mgL
-1With 1400mgL
-1, 10kHz ultrasonic wave effect 40 minutes, the sound intensity is 750Wm
-2, behind suction filtration, the scum silica frost water ratio is 52.3%, dehydration rate reaches 84.3%.
(4) certain refinery slag water ratio that just rises and falls is 90.4%, with NaOH the pH value is adjusted to 7.6, and the amount that adds aluminium iron polychloride and polyacrylamide is respectively 190mgL
-1With 400mgL
-1, 40kHz ultrasonic wave effect 50 minutes, the sound intensity is 350Wm
-2, behind suction filtration, the scum silica frost water ratio is 55.6%, dehydration rate reaches 86.7%.
Claims (6)
1, a kind of oil-containing dross dehydration process is characterized in that oil-containing dross adds flocculation agent after the pH value is regulated and after the ultrasonic wave effect of ultrasonic processing apparatus, enters to carry out deposition dehydrating in the deposition dehydrating device and separate again.
2, technology according to claim 1 is characterized in that it is that to make the pH value of solution be 7～8 weakly alkaline by adding alkaline matter that the pH value is regulated.
3, technology according to claim 2 is characterized in that alkaline matter is caustic soda or yellow soda ash.
4, according to the described technology of claim 1, it is characterized in that described flocculation agent is that aluminium iron polychloride and polyacrylamide are composite, both quality proportionings are between 1: 2 to 1: 10; Volume with first sink-float slag is a benchmark, and flocculant addition is aluminium iron polychloride (PAFC) 10～200mgL
-1, polyacrylamide (PAM) 50～1500mgL
-1
5, technology according to claim 1 is characterized in that frequency of ultrasonic 10～200kHz, the sound intensity 100～1000Wm
-2, action time 1～60min.
6, technology according to claim 1 is characterized in that and can carry out press filtration or centrifugation to scum silica frost behind the deposition dehydrating, further reduces water ratio, and making it can burning disposal or advance coker and realize that resource reclaims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101229362A CN100395191C (en) | 2005-12-08 | 2005-12-08 | Oil-containing dross dehydration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101229362A CN100395191C (en) | 2005-12-08 | 2005-12-08 | Oil-containing dross dehydration process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1803654A true CN1803654A (en) | 2006-07-19 |
| CN100395191C CN100395191C (en) | 2008-06-18 |
Family
ID=36865833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101229362A Expired - Fee Related CN100395191C (en) | 2005-12-08 | 2005-12-08 | Oil-containing dross dehydration process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395191C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455527C (en) * | 2007-03-27 | 2009-01-28 | 南京工业大学 | Oil-removing treatment process of oil-containing sludge |
| CN101176508B (en) * | 2007-12-03 | 2011-12-28 | 通海恒基废旧物资经营有限公司 | Method for processing manioc vinasse slag liquid |
| CN102951744A (en) * | 2011-08-31 | 2013-03-06 | 中国石油化工股份有限公司 | Oil-containing water-enriched scum dehydration treatment method |
| CN103482846A (en) * | 2013-09-18 | 2014-01-01 | 华南理工大学 | Sludge dehydrating method and device |
| CN104891774A (en) * | 2015-05-25 | 2015-09-09 | 遵义师范学院 | Method for treating sludge by use of polyaluminum chloride and ultrasonic combining technology |
| CN104926064A (en) * | 2015-05-25 | 2015-09-23 | 遵义师范学院 | Method for improving water-removing performance of urban sludge by coupling treatment of ultrasonic wave and chitosan |
| CN106145499A (en) * | 2016-08-26 | 2016-11-23 | 湖北民生生物医药有限公司 | The processing method of a kind of diene alcohol ketone acetic ester slag inclusion waste water and system |
| CN106554790A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | The separation method of the liquid product obtained in ethane cracking furnace calibration process |
| CN106673401A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for dewatering oily scum in petrochemical industry |
| CN110257099A (en) * | 2019-06-21 | 2019-09-20 | 江苏新海石化有限公司 | A method of freshening being carried out to dross using coke drum |
| CN115259279A (en) * | 2022-08-09 | 2022-11-01 | 江阴道盛环保科技有限公司 | Method for removing tar in sewage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1033903A (en) * | 1996-07-23 | 1998-02-10 | Unisia Jecs Corp | Oil separator |
| CN1405101A (en) * | 2001-08-09 | 2003-03-26 | 陈志刚 | Method for treatment of waste mud-slurry of oil-field well-drilling |
| CN2683632Y (en) * | 2004-03-25 | 2005-03-09 | 樊利华 | Integrated apparatus for high efficiency ultrasonic treatment of oil sewage |
-
2005
- 2005-12-08 CN CNB2005101229362A patent/CN100395191C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455527C (en) * | 2007-03-27 | 2009-01-28 | 南京工业大学 | Oil-removing treatment process of oil-containing sludge |
| CN101176508B (en) * | 2007-12-03 | 2011-12-28 | 通海恒基废旧物资经营有限公司 | Method for processing manioc vinasse slag liquid |
| CN102951744A (en) * | 2011-08-31 | 2013-03-06 | 中国石油化工股份有限公司 | Oil-containing water-enriched scum dehydration treatment method |
| CN102951744B (en) * | 2011-08-31 | 2013-12-25 | 中国石油化工股份有限公司 | Oil-containing water-enriched scum dehydration treatment method |
| CN103482846A (en) * | 2013-09-18 | 2014-01-01 | 华南理工大学 | Sludge dehydrating method and device |
| CN103482846B (en) * | 2013-09-18 | 2014-12-03 | 华南理工大学 | Sludge dehydrating method and device |
| CN104891774A (en) * | 2015-05-25 | 2015-09-09 | 遵义师范学院 | Method for treating sludge by use of polyaluminum chloride and ultrasonic combining technology |
| CN104926064A (en) * | 2015-05-25 | 2015-09-23 | 遵义师范学院 | Method for improving water-removing performance of urban sludge by coupling treatment of ultrasonic wave and chitosan |
| CN106554790A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | The separation method of the liquid product obtained in ethane cracking furnace calibration process |
| CN106145499A (en) * | 2016-08-26 | 2016-11-23 | 湖北民生生物医药有限公司 | The processing method of a kind of diene alcohol ketone acetic ester slag inclusion waste water and system |
| CN106145499B (en) * | 2016-08-26 | 2023-05-05 | 湖北民生生物医药有限公司 | Treatment method and system for dehydropregnenolone acetate slag-containing wastewater |
| CN106673401A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for dewatering oily scum in petrochemical industry |
| CN110257099A (en) * | 2019-06-21 | 2019-09-20 | 江苏新海石化有限公司 | A method of freshening being carried out to dross using coke drum |
| CN115259279A (en) * | 2022-08-09 | 2022-11-01 | 江阴道盛环保科技有限公司 | Method for removing tar in sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100395191C (en) | 2008-06-18 |
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