CN102390915B - Process for curing and dehydrating scum bottom sludge - Google Patents
Process for curing and dehydrating scum bottom sludge Download PDFInfo
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- CN102390915B CN102390915B CN 201110305297 CN201110305297A CN102390915B CN 102390915 B CN102390915 B CN 102390915B CN 201110305297 CN201110305297 CN 201110305297 CN 201110305297 A CN201110305297 A CN 201110305297A CN 102390915 B CN102390915 B CN 102390915B
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Abstract
The invention relates to the technical field of treatment of oil sludge in oil fields, in particular to a process for curing and dehydrating scum bottom sludge. The process comprises the following steps of: metering the scum bottom sludge by a metering pump and pumping the scum bottom sludge to an initial mixing stirrer, wherein a curing agent is adjusted and boosted into the initial mixing stirrer by a spiral metering booster according to a proportion, and stirring at a speed of 50 r/m for 5 to 30 minutes; discharging the mixture into a secondary mixing stirrer and stirring at a speed of 150 r/m for 10 to 15 minutes; converting the modified and cured scum bottom sludge from a colloid structure into a crystalline structure, and conveying to an air-drying place by a slurry pump, and conserving for 1 to 3 days until the water moisture content of the modified scum bottom sludge is reduced to be less than 40 percent and the heat value is more than 3,000 Kcal/kg; and finishing the process. By the process, quick dehydration for the scum bottom sludge and quantity reduction are realized; and the oily components of the cured scum bottom sludge are distributed uniformly, so recycling of the scum bottom sludge can be realized.
Description
Technical field:
The present invention relates to a kind of oil field mud processing technology field, particularly a kind of scum bottom sludge solidifies dewatering process.
Background technology:
Scum bottom sludge is throw out and the throw out that forms in oil extraction-generated waste water re-injection, the Treatment for Reuse process.These materials contain a large amount of aging crude oil, wax, bituminous matter, colloid and suspended solid, and water ratio is between 90-99%.Because its high-moisture percentage makes its comprehensive utilization ratio lower, area occupied is large, is troubling the development of enterprise always.Solving the scum bottom sludge dehydration problem is the best way that realizes that scum bottom sludge resource utilization, minimizing are processed.
The technological method of processing at present scum bottom sludge mainly contains board-like pressure filtering technique, centrifugal separation technique, filtering basin concentration technique and air-dry technology, wherein board-like pressure filtering technique time of filter pressing is long, still between 75-90%, treatment capacity is little for the scum bottom sludge water ratio after the press filtration, and energy dissipation is serious; Centrifugal separation technique inferior separating effect, solid phase water ratio are still very high, and between 75-90%, and charging requires to contain bulk particle and foreign material; Filtering basin concentration technique poor filtration effect in rainy season, the every use of filter cloth once need the filter cloth that more renews, and investment is large, and the cycle of operation is long, and labour intensity is large, and production on-site environment is poor; Air-dry technology power consumption is large, and treatment capacity is little.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of scum bottom sludge and solidifies dewatering process, and this technique has realized the scum bottom sludge fast dewatering, realizes its minimizing, and the scum bottom sludge oil uniform component distribution after the curing can realize its resource utilization.Overcome prior art and can't realize scum bottom sludge fast dewatering, the deficiency that treatment capacity is little, investment is large.
The technical solution used in the present invention is: a kind of scum bottom sludge solidifies dewatering process, this processing step is as follows: pump in the first mixing agitator after scum bottom sludge is measured by volume pump, according to solidifying agent: the ratio of scum bottom sludge=3: 17 is got solidifying agent, solidifying agent is proportionally adjusted by spiral metering thruster and is advanced in the first mixing agitator, 50 rev/mins of stirring velocitys, stirred 5-30 minute, be discharged in the secondary mixing agitator, 150 rev/mins of stirring velocitys, stirred 10-15 minute, scum bottom sludge after modified solidified is converted into crystalline structure by colloidal structure, then be transported to the airing place by the slag stock pump, maintenance 1-3 days, until the scum bottom sludge water ratio after the modification drops to below 40%, calorific value is more than 3000Kcal/kg, and technique is finished; Wherein each moiety of solidifying agent and mass ratio thereof are: cement 35%, calcium oxide 25%, ferric oxide 10%, gypsum 5%, kaolin 25%.
10 cubic metres of above-mentioned first mixing agitator volumes, inner 25 groups in the helical stir tooth of installing.
10 cubic metres of above-mentioned secondary mixing agitator volumes, inner 75 groups of the duplex stirrer gears of installing.
The invention has the beneficial effects as follows: the present invention is owing to having adopted solidifying agent and scum bottom sludge to stir the mode that makes its curing, thereby have that the scum bottom sludge dewatering speed is fast, technological operation is simple, the effect of less investment, scum bottom sludge oil uniform component distribution after the curing, certain intensity and hardness are arranged, easily stack and processing, the fuel value that forms is suitable with coal-fired calorific value, complete alternative coal-fired the burning.In addition, need not transportation when the present invention processes scum bottom sludge, labour intensity is little, can process on the spot curing, greatly reduces environmental risk.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is process flow sheet of the present invention.
Embodiment:
As shown in drawings, a kind of scum bottom sludge solidifies dewatering process, this processing step is as follows: pump in the first mixing agitator after scum bottom sludge is measured by volume pump, according to solidifying agent: the ratio of scum bottom sludge=3: 17 is got solidifying agent, solidifying agent is proportionally adjusted by spiral metering thruster and is advanced in the first mixing agitator, 50 rev/mins of stirring velocitys, stirred 5 minutes, be discharged in the secondary mixing agitator, 150 rev/mins of stirring velocitys, stirred 10 minutes, scum bottom sludge after modified solidified is converted into crystalline structure by colloidal structure, then is transported to the airing place by the slag stock pump, maintenance 1-3 days, scum bottom sludge behind the formation crystalline structure, moisture a part of crystallization, another part rapidly evaporation reach the scum bottom sludge stabilization, until the scum bottom sludge water ratio after the modification drops to below 40%, calorific value is more than 3000Kcal/kg, and technique is finished; Wherein each moiety of solidifying agent and mass ratio thereof are: cement 35%, calcium oxide 25%, ferric oxide 10%, gypsum 5%, kaolin 25%.10 cubic metres of first mixing agitator volumes, inner 25 groups in the helical stir tooth of installing.10 cubic metres of secondary mixing agitator volumes, inner 75 groups of the duplex stirrer gears of installing.
Bituminous matter in the scum bottom sludge after modified solidified, colloid, light oil constituents and other organic matter are evenly distributed, that scum bottom sludge after modified solidified becomes is loose, porous, have the solid of some strength, the calorific value of scum bottom sludge is more than 3000Kcal/kg, a part is transported to incinerator and directly burns, a part and coal-fired (calorific value is at 4500Kcal/kg) are shipped to according to blending ratio with forklift and carry out mix and blend in the mixing and blending machine at 3: 7, form the New-type fuel calorific value about 4000Kcal/kg, be delivered directly to steam boiler and burn alternative coal-fired.
Be understandable that, above about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (3)
1. a scum bottom sludge solidifies dewatering process, it is characterized in that: this processing step is as follows: pump in the first mixing agitator after scum bottom sludge is measured by volume pump, according to solidifying agent: the ratio of scum bottom sludge=3: 17 is got solidifying agent, solidifying agent is proportionally adjusted by spiral metering thruster and is advanced in the first mixing agitator, 50 rev/mins of stirring velocitys, stirred 5-30 minute, be discharged in the secondary mixing agitator, 150 rev/mins of stirring velocitys, stirred 10-15 minute, scum bottom sludge after modified solidified is converted into crystalline structure by colloidal structure, then be transported to the airing place by the slag stock pump, maintenance 1-3 days, until the scum bottom sludge water ratio after the modification drops to below 40%, calorific value is more than 3000Kcal/kg, and technique is finished; Wherein each moiety of solidifying agent and mass ratio thereof are: cement 35%, calcium oxide 25%, ferric oxide 10%, gypsum 5%, kaolin 25%.
2. solidify dewatering process according to scum bottom sludge claimed in claim 1, it is characterized in that: 10 cubic metres of described first mixing agitator volumes, inner 25 groups in the helical stir tooth of installing.
3. solidify dewatering process according to scum bottom sludge claimed in claim 1, it is characterized in that: 10 cubic metres of described secondary mixing agitator volumes, inner 75 groups of the duplex stirrer gears of installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110305297 CN102390915B (en) | 2011-10-11 | 2011-10-11 | Process for curing and dehydrating scum bottom sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110305297 CN102390915B (en) | 2011-10-11 | 2011-10-11 | Process for curing and dehydrating scum bottom sludge |
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| Publication Number | Publication Date |
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| CN102390915A CN102390915A (en) | 2012-03-28 |
| CN102390915B true CN102390915B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110305297 Expired - Fee Related CN102390915B (en) | 2011-10-11 | 2011-10-11 | Process for curing and dehydrating scum bottom sludge |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109351750A (en) * | 2017-08-08 | 2019-02-19 | 江苏中科君达物联网股份有限公司 | A kind of oil gas field solid waste environmental protection treatment integrated machine system |
| CN109574429A (en) * | 2019-02-14 | 2019-04-05 | 北京净界新宇环保科技有限公司 | A kind of method of heavy metal in solidifying oil sludge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939870A (en) * | 2005-09-29 | 2007-04-04 | 中国石油天然气集团公司 | Non-silicon sludge curing treatment of thickened-oil sewage |
| CN101254996A (en) * | 2008-03-24 | 2008-09-03 | 上海明诺环境科技有限公司 | Method for treating dehydrated sludge of domestic sewage treatment plant |
| CN101456662A (en) * | 2008-12-24 | 2009-06-17 | 深圳市津港环保技术有限公司 | Urban sludge chemical curing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8196311B2 (en) * | 2008-10-22 | 2012-06-12 | Hydrocell Technologies | Waste treatment system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1939870A (en) * | 2005-09-29 | 2007-04-04 | 中国石油天然气集团公司 | Non-silicon sludge curing treatment of thickened-oil sewage |
| CN101254996A (en) * | 2008-03-24 | 2008-09-03 | 上海明诺环境科技有限公司 | Method for treating dehydrated sludge of domestic sewage treatment plant |
| CN101456662A (en) * | 2008-12-24 | 2009-06-17 | 深圳市津港环保技术有限公司 | Urban sludge chemical curing method |
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| CN102390915A (en) | 2012-03-28 |
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Granted publication date: 20130424 Termination date: 20181011 |