CN101362979A - Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof - Google Patents
Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof Download PDFInfo
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- CN101362979A CN101362979A CNA2008102161360A CN200810216136A CN101362979A CN 101362979 A CN101362979 A CN 101362979A CN A2008102161360 A CNA2008102161360 A CN A2008102161360A CN 200810216136 A CN200810216136 A CN 200810216136A CN 101362979 A CN101362979 A CN 101362979A
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Abstract
The invention relates to an oily sludge renewable coal and a production technology thereof for an oil field and a refinery. The renewable coal composition is composed of 10 percent to 30 percent of oily sludge, 60 percent to 80 percent of coal, 3 percent to 6 percent of sulfur fixing matter and 1 percent to 5 percent of preservative according to the weight percentage. The production technology comprises the following steps: sludge thickening to flocculation reaction to sludge dehydration to stirring and mixing to extrusion forming and drying by a tunnel kiln. The production technology further comprises the disposal technology of wastewater containing oily sludge: wastewater to an oil separating tank to an air flotation tank to an anaerobic tank to an aerobic tank to a secondary sedimentation tank to a transition tank to an electricity charge payment device to a coagulation and air flotation tank to a clean water tank. The wastewater can achieve the national first level discharge standard after the treatment, and the outlet water is reused for green irrigation or car washing or toilet flushing. The oily sludge renewable coal has the advantages of high calorific value, low ignition point and low production cost, thereby truly realizing the purposes of reduction, harmlessness and resource utilization of the oily sludge.
Description
Technical field
The present invention relates to a kind of technology of handling at recover the oil field and refinery oily sludge, particularly a kind of oil recovery field and refinery oily sludge be soft coal and production technique thereof again.
Background technology
Oily sludge is one of important pollutent that produces in oil recovery field and refinery exploitation and the storage and transport process, also is a great problem of influence oil recovery field and refinery and surrounding enviroment quality.Oily sludge mainly is divided three classes: the oily sludge that the oily sludge that Oil extraction produces, oil field gathering and transportation process are produced, sewage from oil refinery are handled an oily sludge that produces.General oil length is 10%～50% in the oily sludge, water ratio is 40%～90%, in the China's oil petrochemical industry, produce 800,000 tons of jar bed muds, pond bed mud every year on average, the annual oily sludge that produces of Shengli Oil Field is more than 100,000 tons, annual about 150,000 tons of the oily sludge that produces of Dagang Oilfield, Henan Oil Field is annual to produce 5 * 10
4m
3Oily sludge.
The composition of oil recovery field and refinery oily sludge is extremely complicated, generally form by oil-in-water, water-in-oil and suspended solid impurities, it is a kind of extremely stable suspension emulsion system, contain a large amount of aging crude oil, colloid, bituminous matter, wax, suspended solid, bacterium, salt, sour gas, corrosion products etc., also comprise water conditioners such as a large amount of flocculation agent of adding in the production process, inhibiter, Scale inhibitors, sterilant.Therefore, at different water quality, treatment process and pharmacy type and add under the condition of dose, the composition of oily sludge and output difference are very big.Wherein contain a large amount of benzene series things, pyrene, anthracene, aldehydes matter, and stench and poisonous, do not handled, both contaminate environment was wasted resource again.
The processing final purpose of oily sludge is to turn to principle with minimizing, innoxious, resource.At present, oily sludge treatment process commonly used: solvent extration, burning method, biological process, pyrogenic process, oily sludge profile control, oily sludge comprehensive utilization etc.All multi-methods all exist some problems, some working cost height, and facility investment is big, and general does not get up the utilization of resources.Greatly, easily produce secondary pollution as domestic burning method commonly used power consumption, oily resource does not obtain recycling yet; Biological treatment need last 41 days could be with 97% petroleum hydrocarbon biological degradation, and same oily resource does not obtain recycling yet; The problem that solvent extration exists is a long flow path, complex process, and the processing costs height only is suitable for the oily sludge that contains a large amount of hardly degraded organic substances; Chemical demulsification method need add emulsion splitter and heating in addition to the serious oily sludge of emulsification; Solid-liquid isolation method is low for the oil recovery rate that contains innage, with serious pollution oily sludge.So these methods are failed at home popularization and application effectively.
Summary of the invention
The purpose of this invention is to provide and a kind of oily sludge is converted into soft coal again, by the desulphurization problem in the additive solution regeneration burning of coal, and the waste water that is produced in the preparation process handled making it be back to use green area irrigation or be back to carwash, flush the toilet etc., the oily sludge of really realizing the minimizing of oily sludge, innoxious, resource utilization is soft coal again.Another object of the present invention provides a kind of an oil recovery and the refinery oily sludge production technique of soft coal again.
Purpose of the present invention can reach by following measure:
This oil recovery field and refinery oily sludge be soft coal again, and its special character is: said composition is composed of the following components by weight percentage:
Oily sludge 10%～30% coal 60%～80%
Gu sulphur thing 3%～6% sanitas 1%～5%.
Below the broken 3mm of described coal, selecting combustion heat value for use is the common coal of 3000Kcal/Kg～4000Kcal/Kg, preferential 3500Kcal/Kg.
Purpose of the present invention can also reach by following measure:
Prepare above-mentioned oil recovery field and the refinery oily sludge production technique of soft coal again, its special character is that this method may further comprise the steps:
(1) mud concentrates;
(2) flocculation reaction;
(3) sludge dewatering;
(4) mix;
(5) extrusion molding;
(6) tunnel furnace oven dry.
Described step (1) further comprises: the oily sludge that will compile or collect in the sludge sump is promoted to sludge thickener through the mud lift pump, mud passed through gravity settling 2～5 hours in concentration basin, moisture percentage in sewage sludge after concentrating is 90%～95%, and upper strata waste water enters sewage plant and handles.
Described step (2) further comprises: be transported to line mixer through the mud after the concentration, add flocculation agent from drug dissolving tank to line mixer simultaneously, make flocculation agent and thickened sludge hybrid reaction.
Described step (3) further comprises: the mud after flocculation is transported in the dehydration equipment and dewaters, and the moisture percentage in sewage sludge after the dehydration is 70%～80%, and the waste water of generation enters sewage plant and handles.
Described step (4) further comprises: the coal after mud after the processed and process fragmentation is transported to stirrer in the ratio of 1:3～1:4, mixes in the lump to wherein adding a small amount of additive simultaneously.
Described step (5) further comprises: the product that mixes is passed through single-lead-screw extruding briquetting machine, produce different shapes oily sludge soft coal more as required, required shape can be reached by the template pass design of extruding, and this moment, the water ratio of soft coal was 20%～30% again.
Described step (6) further comprises: the product after the extrusion molding adopts the oven dry of tunnel furnace formula steam heating, and 160 ℃ of saturated-steam temperatures adopt this product for warm steam coal; Oven dry back product water ratio is controlled in 15%, and warehouse-in is stored.
Described oil recovery field and refinery oily sludge be the production technique of soft coal again, also further comprises the treatment process to oily sludge waste water:
(1) waste water enters slop oil tank through oil trap with the sump oil of collecting;
(2) the oil trap water outlet is lifted into colloid, particulate matter, bits foam and the oil substances that air flotation pool carries out air supporting removal suspension with pump, and the scum silica frost of generation enters sludge thickener;
(3) the coagulation floatation water outlet after flowing into anaerobic pond, Aerobic Pond biochemical treatment, enters second pond successively, is back to anaerobic pond through the sedimentary mud part of second pond, and another part enters sludge thickener with the body refuse that coagulation floatation produces;
(4) the second pond water outlet is pumped into the last step coagulation floatation after the transition pond enters the logical pond of the electricity charge and handles, and the air supporting water outlet flows into clean water basin;
(5) waste water is through after this art breading, and its clean effluent reuse is in green area irrigation or be back to carwash, flush the toilet.
The present invention has the following advantages compared to existing technology:
(1) soft coal has the calorific value height to oily sludge again, burning-point is low and the low advantage of production cost, really realizes minimizing, the resource utilization, innoxious of oily sludge.
(2) because oily sludge contains sour gas, corrosion product etc., in additive, added alkaline matter, in the process of coal combustion, just can neutralize, therefore, oily sludge of the present invention soft coal again is applicable to Industrial Boiler and heating boiler, is more suitable in civil honeycomb briquette.
(3) waste water can reach (GB8978-1996) primary standard of China Petrochemical Industry's industry class of country's " integrated wastewater discharge standard ", wherein: CODCr≤60mg/L, suspended substance≤70mg/L, petroleum-type≤5mg/L through after this art breading.
Description of drawings
Fig. 1 is oily sludge regeneration coal technological process of production figure of the present invention.
Fig. 2 is processing technological flow figure wastewater produced in the invention process process
Embodiment
The present invention is further detailed in conjunction with the accompanying drawings below:
Embodiment:
Take by weighing raw material (kilogram) by following proportioning:
Oily sludge, coal 45%, solid sulphur thing 5%, tackiness agent and sanitas 5%.
Oily sludge 20% coal 70%
Gu sulphur thing 5% sanitas 5%.
Described coal is crushed to below the 3mm, and selecting combustion heat value for use is the common coal of 3000Kcal/Kg～4000Kcal/Kg, preferential 3500Kcal/Kg.
See also shown in Figure 1ly, oily sludge of the present invention regeneration coal production technique is as follows:
1) all kinds of oily sludges is collected into the mud collecting tank;
2) oily sludge in the mud collecting tank is promoted to sludge thickener through the mud lift pump, mud passed through gravity settling 2 hours in concentration basin, and upper strata waste water enters sewage plant and handles;
3) will cross concentration mud afterwards and be delivered to line mixer, to line mixer, add PAM from drug dissolving tank simultaneously, make PAM and thickened sludge hybrid reaction;
4) mud after will flocculating is transported in the vacuum belt water extracter and dewaters, and the waste water of generation enters sewage plant and handles;
5) be transported to stirrer with the mud after the processed and through the coal after the fragmentation in the 1:3 ratio, mix in the lump to wherein adding a small amount of other additives simultaneously.
6) the above-mentioned product that mixes is passed through single-lead-screw extruding briquetting machine, produce different shapes oily sludge soft coal more as required, required shape can be reached by the template pass design of extruding.
7) last, the product after the extrusion molding is adopted the oven dry of tunnel furnace formula steam heating, 160 ℃ of saturated-steam temperatures can adopt this product for warm steam coal, and oven dry back product water ratio is controlled in 12%, and warehouse-in is stored.The process of oven dry also is germ-resistant process.
See also shown in Figure 2ly, this production method also further comprises the treatment process to oily sludge waste water:
(1) waste water enters slop oil tank through oil trap with the sump oil of collecting;
(2) the oil trap water outlet is lifted into colloid, particulate matter, bits foam and the oil substances that air flotation pool carries out air supporting removal suspension with pump, and the scum silica frost of generation enters sludge thickener;
(3) the coagulation floatation water outlet after flowing into anaerobic pond, Aerobic Pond biochemical treatment, enters second pond successively, is back to anaerobic pond through the sedimentary mud part of second pond, and another part enters sludge thickener with the body refuse that coagulation floatation produces;
(4) the second pond water outlet is pumped into the last step coagulation floatation after the transition pond enters the logical pond of the electricity charge and handles, and the air supporting water outlet flows into clean water basin;
(5) waste water is through after this art breading, and its clean effluent reuse is in green area irrigation or be back to carwash, flush the toilet.
The treatment process of described oily sludge waste water, wherein the end of treatment scheme is provided with electricity charge circulation method, its principle is: in 6～24V low pressure electrostatic field, throwing sulfuric acid accent waste water ph is 4, and adds an amount of hydrogen peroxide and ferrous sulfate by the COD value of waste water, stop after 2 hours, produce the hydroxyl radical free radical ion, make inorganicization of organism remaining in the waste water, become carbonic acid gas and water, thereby guarantee the water outlet qualified discharge behind the biochemistry, and regulate dosage and can control water outlet COD value artificially.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (10)
1. one kind is recovered the oil and refinery oily sludge soft coal again, it is characterized in that: by weight percentage this soft coal is composed of the following components again:
Oily sludge 10%～30% coal 60%～80%
Gu sulphur thing 3%～6% sanitas 1%～5%.
2. according to the described oil recovery of claim 1 and refinery oily sludge soft coal again, it is characterized in that: described coal is crushed to below the 3mm, and selecting combustion heat value for use is the common coal of 3000Kcal/Kg～4000Kcal/Kg, preferentially 3500Kcal/Kg.
3. prepare claim 1 described oil recovery field and the refinery oily sludge production technique of soft coal again, it is characterized in that this method may further comprise the steps:
(1) mud concentrates;
(2) flocculation reaction;
(3) sludge dewatering;
(4) mix;
(5) extrusion molding;
(6) tunnel furnace oven dry.
4. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (1) further comprises: the oily sludge that will compile or collect in the sludge sump is promoted to sludge thickener through the mud lift pump, mud passed through gravity settling 2～5 hours in concentration basin, moisture percentage in sewage sludge after concentrating is 90%～95%, and upper strata waste water enters sewage plant and handles.
5. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (2) further comprises: be transported to line mixer through the mud after the concentration, to line mixer, add flocculation agent from drug dissolving tank simultaneously, make flocculation agent and thickened sludge hybrid reaction.
6. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (3) further comprises: the mud after flocculation is transported in the dehydration equipment and dewaters, moisture percentage in sewage sludge after the dehydration is 70%～80%, and the waste water of generation enters sewage plant and handles.
7. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (4) further comprises: be transported to stirrer through the mud after the processed and through the coal after the fragmentation in 1:3～1:4 ratio, mix in the lump to wherein adding a small amount of additive simultaneously.
8. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (5) further comprises: the product that mixes is passed through single-lead-screw extruding briquetting machine, produce different shapes oily sludge soft coal more as required, required shape can be reached by the template pass design of extruding, and this moment, the water ratio of soft coal was 20%～30% again.
9. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that: described step (6) further comprises: the product after the extrusion molding adopts the oven dry of tunnel furnace formula steam heating, 160 ℃ of saturated-steam temperatures adopt this product for warm steam coal; Oven dry back product water ratio is controlled in 15%, and warehouse-in is stored.
10. according to the described oil recovery of claim 3 and the refinery oily sludge production technique of soft coal again, it is characterized in that, also further comprise treatment process oily sludge waste water:
(1) waste water enters slop oil tank through oil trap with the sump oil of collecting;
(2) the oil trap water outlet is lifted into colloid, particulate matter, bits foam and the oil substances that air flotation pool carries out air supporting removal suspension with pump, and the scum silica frost of generation enters sludge thickener;
(3) the coagulation floatation water outlet after flowing into anaerobic pond, Aerobic Pond biochemical treatment, enters second pond successively, is back to anaerobic pond through the sedimentary mud part of second pond, and another part enters sludge thickener with the body refuse that coagulation floatation produces;
(4) the second pond water outlet is pumped into the last step coagulation floatation after the transition pond enters the logical pond of the electricity charge and handles, and the air supporting water outlet flows into clean water basin;
(5) waste water is through after this art breading, and its clean effluent reuse is in green area irrigation or be back to carwash, flush the toilet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810216136A CN101362979B (en) | 2008-09-12 | 2008-09-12 | Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810216136A CN101362979B (en) | 2008-09-12 | 2008-09-12 | Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101362979A true CN101362979A (en) | 2009-02-11 |
| CN101362979B CN101362979B (en) | 2012-10-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793403A (en) * | 2010-03-15 | 2010-08-04 | 陈凤飞 | Method for treating sludge |
| CN102021062A (en) * | 2010-12-13 | 2011-04-20 | 日照鲁信金禾生化有限公司 | Process method for preparing boiler fuels from citric acid industrial flocculent sludge |
| CN105923930A (en) * | 2016-07-08 | 2016-09-07 | 吴印强 | Biological treatment technology for sewage |
| CN106587547A (en) * | 2016-11-22 | 2017-04-26 | 北京市理化分析测试中心 | Simulating method of special oil sludge in oil field |
| CN114804397A (en) * | 2022-02-16 | 2022-07-29 | 铜陵泰富特种材料有限公司 | Biochemical light heavy oil and scum recovery method |
-
2008
- 2008-09-12 CN CN200810216136A patent/CN101362979B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793403A (en) * | 2010-03-15 | 2010-08-04 | 陈凤飞 | Method for treating sludge |
| CN102021062A (en) * | 2010-12-13 | 2011-04-20 | 日照鲁信金禾生化有限公司 | Process method for preparing boiler fuels from citric acid industrial flocculent sludge |
| CN102021062B (en) * | 2010-12-13 | 2013-12-11 | 日照金禾博源生化有限公司 | Process method for preparing boiler fuels from citric acid industrial flocculent sludge |
| CN105923930A (en) * | 2016-07-08 | 2016-09-07 | 吴印强 | Biological treatment technology for sewage |
| CN106587547A (en) * | 2016-11-22 | 2017-04-26 | 北京市理化分析测试中心 | Simulating method of special oil sludge in oil field |
| CN106587547B (en) * | 2016-11-22 | 2019-07-16 | 北京市理化分析测试中心 | A kind of analogy method of the special greasy filth in oil field |
| CN114804397A (en) * | 2022-02-16 | 2022-07-29 | 铜陵泰富特种材料有限公司 | Biochemical light heavy oil and scum recovery method |
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|---|---|
| CN101362979B (en) | 2012-10-10 |
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Application publication date: 20090211 Assignee: SHENZHEN HUAJINYUAN BUSINESS SERVICE CO., LTD. Assignor: Shenzhen Yuli Technology Co., Ltd. Contract record no.: 2013440020280 Denomination of invention: Regenerated coal prepared by oil-containing sludge from oil production field and oil-extraction plant and preparation technology thereof Granted publication date: 20121010 License type: Exclusive License Record date: 20130925 |
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