CN102826729A - Electromagnetic microwave treatment system and method for oil-based drilling fluid waste - Google Patents
Electromagnetic microwave treatment system and method for oil-based drilling fluid waste Download PDFInfo
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- CN102826729A CN102826729A CN2012103363934A CN201210336393A CN102826729A CN 102826729 A CN102826729 A CN 102826729A CN 2012103363934 A CN2012103363934 A CN 2012103363934A CN 201210336393 A CN201210336393 A CN 201210336393A CN 102826729 A CN102826729 A CN 102826729A
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Abstract
The invention relates to a system and a method for treating drilling fluid wastes, in particular to a system and a method for treating oil-based drilling fluid wastes by electromagnetic microwaves. By utilizing the comprehensive heat effect of light waves, electromagnetic waves and microwaves, the oil-water emulsion in the oil-containing sludge can be demulsified and separated, so that the oil-water emulsion is dried, dehydrated and vaporized, and the resource utilization of oil, water and residues is realized. The oil content in the drill cuttings and the waste is reduced to below 2 percent, and the national emission standard is reached. On one hand, the problem of waste pollution of the oil-based drilling fluid is well solved, and on the other hand, the waste of the oil-based drilling fluid or the synthetic base is reduced.
Description
Technical field
The present invention relates to a kind of drilling fluid castoff processing system and method, particularly oil base drilling fluid waste electromagnetic microwave treatment system and method.
Background technology
In the wellbore construction process; Produce a large amount of drilling cuttings and waste, because these drilling cuttings and waste receive the pollution of drilling fluid and resident fluid, the oleaginousness in drilling cuttings and the waste is higher; The highest above 30%; Producible drilling cuttings of a bite well and waste can reach hectostere, and plant does not give birth to, biological death, can bring disaster to our human existence at last.Therefore oil-base mud drilling cuttings and waste being made the needs that harmless treatment is environmental protection, also is the needs of our human survival.Discharging can be polluted surrounding environment arbitrarily, and the earth of depending on for existence to us causes the injury that can't recover, and progressively dwindles the space of human survival.Therefore will pass through harmless treatment to the drilling cuttings that produces in the drilling process and waste could discharge.Because the natural degradation of oil base drilling fluid waste is difficulty unusually, the difficulty of manual handling is also quite big simultaneously, and the harmless treatment of consequent oil base drilling fluid waste becomes the bottleneck problem of promoting the use of oil base drilling fluid.At present, it is earlier through mechanical pretreatment that oily sludge is handled more feasible method, carries out a biological disposal upon then, and its advantage is to handle thoroughly, but relatively poor to the oily sludge treatment effect of low granularity, and can not reclaim waste oil.
Summary of the invention
The purpose of this invention is to provide a kind of oil base drilling fluid waste electromagnetic microwave treatment system and method.Oil base drilling fluid waste electromagnetic microwave treatment system of the present invention and method; Utilize the comprehensive heat effect of light wave, hertzian wave and microwave; Can separate the water-oil emulsion breakdown of emulsion in the oily sludge, make it mummification, dehydration and waste oil vaporization, realize the recycling of oil, water and slag.Oil-contg in drilling cuttings and the waste is reduced to below 2%, reaches discharging standards.Solve the problem of oil base drilling fluid waste pollution on the one hand well, also reduced the waste of oil base drilling fluid oil or synthetic base on the other hand.
Technical scheme of the present invention is following:
A kind of oil base drilling fluid waste electromagnetic microwave treatment system; It is characterized in that mainly preserve case, opening for feed, light wave preheating casing, electromagnetic oscillation casing, microwave heating casing, flue gas condenser, discharge port by screw feeder, drilling cuttings and form, screw feeder 1# connects screw feeder 2#; Screw feeder 2# one end is arranged on drilling cuttings and preserves in the case; Waste is sent into drilling cuttings preserve in the case, the end of screw feeder 3# is arranged on drilling cuttings and preserves in the case, waste is exported drilling cuttings preserve case; The other end of screw feeder 3# connects opening for feed; Opening for feed connects light wave preheating casing, electromagnetic oscillation casing and microwave heating casing, and microwave heating casing top is provided with flue gas condenser, and the outlet of microwave heating casing is provided with screw feeder 4#; In each casing, be provided with conveying belt, make waste in each casing, transmit.
Above the input spiral conveyer, be provided with whizzer.
Preserve on the case and can be provided with some vibratory screening apparatuss at drilling cuttings according to practical situation.
Between charging energy suppressor and light wave preheating casing, be provided with metal detecting system.
Between microwave heating casing and discharging energy suppressor, be provided with metal detecting system.
Discharge system also is connected with system.
Said oil base drilling fluid waste electromagnetic microwave treatment system can also be provided with temperature control refractory protection, sprinkling extinguishing device, electrical equipment cooling system, pilot circuit explosion-proof equipment, radiation isolating and protecting device, anti-icer, rain insensitive device or waste gas and isolate adsorption unit.
Casing material in the said oil base drilling fluid waste electromagnetic microwave treatment system adopts stainless steel plate, type of attachment to adopt fastening piece to connect.
Feed system adopts ramp type feed bin form, is provided with strong magnetic stirring bar in the feed bin.
A kind of oil base drilling fluid waste electromagnetic microwave treatment process; The input spiral conveyer is installed in the outside of oil base drilling fluid circulation tank; Directly sand separator, silt remover or whizzer being removed the waste that gets off down is transported to drilling cuttings and preserves in the case; Send into feed system by frequency conversion input spiral conveyer again; Make the drilling fluid waste suppress system, light wave preheating casing, electromagnetic oscillation casing, microwave heating casing through the charging energy successively through spiral conveyer; Part drilling fluid waste becomes steam in the microwave heating casing, reclaim and be stored in the condensation fuel tank through the flue gas condenser that is arranged on microwave heating casing top, and another part drilling fluid waste becomes the solid waste that can discharge through discharge system.
In light wave preheating casing, make the waste surface temperature reach 80 ℃.
In the electromagnetic oscillation case, make the waste temperature rise to 150 ℃.
The frequency of microwave heating casing is 2450 ± MHz, and microwave heating rises to temperature of charge about 220 degree, and the oil vaporization separates volatilization fast from micropore.
Vaporizing oil reclaims below discharging casing condensed exterior to 40 degree through smoke discharging pipe again.
Light wave radiation preheating:
In-plant light wave radiation is heated the surface temperature of waste to be higher than the center and inside is heated; The light wave preheating section can be heated to material surface initial temperature rapidly more than 80 degree by normal temperature; The waste surface is heated greater than inside, the expanded generation micropore bubble of waste surface beginning.
Electromagnetic oscillation:
Electromagnetic waves acts on the waste central interior; Waste inside center be heated rapid expanded aggravation and surperficial formation temperature gradient difference; Inner pressure in bubbles and the surface micropore bubble formation draught head of producing, the oil in the drilling wastes begins under the micropore gas pressure, to separate with water, and this stage temperature of charge rises to about 150 degree; The state of oil and water is not a water-in-oil, and water and separating of oil back water all are evaporated totally.
3, microwave heating:
Microwave belongs to uhf electromagnetic wave; Be the most energy-conservation in dielectric heating, the energy of microwave acts directly in the material load, and air and metal cabinet do not absorb microwave; What material received is the once conversion that electric energy is converted into micro-wave energy, does not have the twice transformation of conventional conduction heating.The microwave frequency per second of employing 2450MHZ can be with polar molecule vibratory movement 2,400,000,000 5 thousand ten thousand times.Waste is inner and surperficial when the surperficial preheating of passing through light wave and electromagnetic separation; Inner and surface has formed the expanding microporous of inner small and outside big densification; The earth deposition lower end that draught head and gravity are heavy with quality; Separating of oil to the upper end, microwave heating rises to temperature of charge about 220 degree, and the oil vaporization separates volatilization fast from micropore.
4, condensing and recycling
Vaporizing oil reclaims below discharging casing condensed exterior to 40 degree through smoke discharging pipe again.
Beneficial effect of the present invention:
1, equipment adopts folded formula assembling, and mode is reasonable, convenient transportation, and floor space is little.
2, equipment protecting equipment is complete, and is safe and reliable to operation.Equipment is equipped with: metal detecting device, pilot circuit explosion protection system, radiation isolating and protecting device, antifreeze treatment process, rain insensitive device etc.
3, technology is simple, and is easy to operate, just can carry out substantial length of operation to equipment an electrical control cubicles.
Description of drawings
Fig. 1: electromagnetic microwave separation system general assembly vertical view
Fig. 2: electromagnetic microwave separation system synoptic diagram
Fig. 3: electromagnetic microwave separation system accessory structure synoptic diagram
1-screw feeder 1# 2-screw feeder 2# 3-drilling cuttings preserves case 4-screw feeder 3# 5-opening for feed 6-electromagnetic microwave separation system 7-discharge port 8-screw feeder 4# 9-flue gas discharging energy suppressor 10-metal locator 11-charging energy suppressor
61-flue gas condenser 62-conveying belt 63-light wave preheating casing 64-electromagnetic oscillation casing 65-skid system, 66-microwave heating casing
Embodiment
Scale: between 5 ton hours: in July, 2012
Processing mode: handle in the strange land
Treating processes and result:
Per hour handle 2 tons oil patch at least, about initial oil-containing 20-30%, in the soil moisture about 5%.Water evaporation humidity discharging after the microwave heating, the oil of heating back residue 5%.Utilize microwave equipment that the oil-containing material is heated to about 150 degree, electromagnetic microwave equipment duration of service every day is for being no more than 12 hours, middle being with the time of having a rest.The equipment total length is no more than 11 meters, and width is no more than 3 meters, and complete machine needs explosion-proof configuration.And rainproof configuration is done in requirement.
Micro-wave drying; The oil length of total material is about 30% before dry; The calculating de-oiling rate of weighing after the drying has reached 95%, is no more than 150 degree with far infrared temperature measurer test material hot face temperature immediately after the microwave heating, and the material after the heating is tested final oil length less than 5% through you.Core temperature is no more than 220 degree.Do not reach the flash-point of white oil.
Casing is 304 stainless steels, and other supply bay and support adopt 202 stainless steels; The complete machine outward appearance is all steel material.
(1) microwave equipment technical indicator
1, system forms: microwave heating casing, microwave generator (water-cooling), microwave suppress system, material-transporting system (explosion separation motor), hot blast delivery system (material preheating and spin manifold temperature atmosphere), control and detection system;
2, environment for use:
1) input power supply: Three-phase five-wire 380V ± 10%50Hz ± 1%
2) distribution power: 138KVA
3) envrionment temperature: 0～40 ℃
4) other requirement: relative humidity≤80%
3, microwave system
1) microwave frequency: 2450 ± 50MHz
2) microwave power: output rating 100KW (the power segmentation is adjustable)
3) microwave casing quantity: 8
4) equipment size (length * wide * height): 13200mm * 1750mm * 1800mm
5) microwave equipment complete machine outward appearance adopts the stainless steel frosted plate manufacturing;
6) microwave feed-in position: top feed-in
7) microwave suppressor opening free height: import 70mm, outlet 70mm;
8) type of cooling: magnetron (water-cooling), X-former (oil immersion water-cooling).
9) microwave leakage and electrical safety standard:
A, meet national GB10436-89 standard
B, meet national GB5226 electrical safety standard
10) for ease of cleaning, be provided with the big opening door of sweeping health, adopt the choke of the anti-microwave leakage of contemporary new and high technology, big area visual window (light is arranged) is provided with the automatic power-off protection device that opens the door.Top board light mouth is totally-enclosed.
Drag the rod spindle nose to adopt fixed connection to prevent sparking in the case.
4, input and output material system and microwave suppressor:
1) the about 800mm of the intake zone of equipment (head) length, the about 750mm of discharge zone (tail) length.
2) equipment charging and discharging end respectively is equipped with 1200mm suppressor passage; The feed openings free height is 70mm, discharge port height 70mm.
The suppressor design is adopted isolated principle, is prevented that microwave leakage from surpassing national regulation index 5mw/cm
2(my company carries out less than 3mw/cm
2)
5, drying box:
1) dryer section is made up of 8 microwave casings, the long 1170mm of casing, internal box width 1240mm (tetrafluoroethylene glass polybrochate travelling belt width: about 1050mm).Internal box adopts 304 stainless steel frosted plate manufacturings.The employing outward flange connects.The thermal insulation layer of each 75mm thickness of internal box outer side configuration is joined the stainless steel cladding plate outward.8 loft drier total lengths are 9360mm altogether.Conveying belt is apart from ground 850mm.
2) for ease of cleaning and observation operation, each casing all is provided with the big opening door visible observation window of sweeping health, and window adopts toughened glass to prevent that high temperature from bursting.Adopt the choke of accurate anti-microwave leakage, automatic power-off protection function opens the door.
3) thick 202 stainless steel plates of the support of casing employing 1.5mm are exoskeletal manufactures and designs, and accomplishes solid and reliable.Design load-bearing feet is accomplished steady, strong, attractive in appearance.
4) the wide about 500mm of microwave transformer yoke, transformer yoke is arranged at the side of microwave heating casing, and X-former, high voltage silicon rectifier stack, high-voltage capacitance all are arranged on the transformer yoke, and the outside is done cover airtight and ambient wind and is not reacted, and avoids contacting with gas.
5) the thick warming plate of heating casing top configuration 75mm, the thick warming plate of casing two sides configuration 75mm, the thick warming plate of bottom configuration 50mm.
6) the configuration thermocouple meter charges into the mouth of pipe at hot blast, the band analog quantity output signals, and hot blast temperature reaches 125 degree and quits work at once, is lower than 115 degree and starts heating once more.
7) adopt two cover thermocouple temperature measurement instrument thermometrics, the band analog quantity output signals, hot blast temperature reaches 125 degree and quits work at once, is lower than 115 degree and starts heating once more.Connecting tube adopts stainless steel manufacturing, outsourcing insulating cotton.Thermal source is disposed by the user.
8) respectively dispose three 160mm*160mm humidity discharging mouths between the 3rd casing and the 8th casing.Dispose the temperature of a thermocouple temperature measurement appearance monitoring air outlet.
6, transmission system:
1) driving motor power: 3KW (explosion separation motor)
2) transmission speed: 0～5 meter/minute (frequency conversion is adjustable)
3) speed governing form: speed control by frequency variation
4) defeated material form: adopt the close guipure of tetrafluoroethylene glass (mesh 1mm*1mm), the perk of transport tape both sides comes off when preventing the material operation.But heatproof 200 degree, configuration automatic deviation rectifying device, the coarse adjustment of adjustable conveying belt and fine setting.
The user need provide source of the gas (0.5MPa).The source of the gas of normal air compressor;
7, system
1) mode: conventional push button control.
2) method of temperature control, position and specification of equipment, model: noncontact far infrared temperature measurer, HC300/SWP
3) temperature-measuring range, precision: 0～300 ℃
4) microwave power regulation range: 0～100KW (adjustable power)
5) other: doorswitch 8 points (open in working order fire door, protection outage) that put in place.
8, humidity discharging recovery, water cooling system:
1) mouth is reclaimed in 3 humidity dischargings of equipment configuration, so that moisture is in time drained.
2) hydrofuge pipeline: stainless steel pipes.
3) hydrofuge: one of 2.2kw three-phase multiple wing type centrifugal blower fan.High temperature resistant explosion-proof, the user is supporting.
4) cooling basin: 15 cubes of recirculated waters are provided, and normal moisture storage capacity 14 cubes (user is supporting) also can be bought the circulating water of radiation device use on the market.
5) one in water circulating pump and conduit pipeline user are by on-the-spot autogamy.
6) require inflow temperature to be lower than 35 degree, intake pressure is at 0.35MPa throughout the year, and pressure of return water is less than 0.2MPa; Water inclusion-free and planktonic organism prevent blocking pipeline.
Claims (9)
1. oil base drilling fluid waste electromagnetic microwave treatment system; It is characterized in that mainly preserve case (3), opening for feed (5), light wave preheating casing (63), electromagnetic oscillation casing (64), microwave heating casing (66), flue gas condenser (61), discharge port (7) by screw feeder (1,2,4,8), drilling cuttings and form, screw feeder 1# (1) connects screw feeder 2# (1); Screw feeder 2# (1) one end is arranged on drilling cuttings and preserves in the case (3); Waste is sent into drilling cuttings preserve in the case (3), the end of screw feeder 3# (2) is arranged on drilling cuttings and preserves in the case, waste is exported drilling cuttings preserve case (3); The other end of screw feeder 3# (2) connects opening for feed (5); Opening for feed (5) connects light wave preheating casing (63), electromagnetic oscillation casing (64) and microwave heating casing (66), and microwave heating casing top is provided with flue gas condenser (61), and microwave heating casing (66) outlet is provided with screw feeder 4# (8); In each casing, be provided with conveying belt (3), make waste in each casing, transmit.
2. treatment system as claimed in claim 1 is characterized in that, is outside equipped with flue gas discharging energy suppressor (9) at flue gas condenser (61).
3. treatment system as claimed in claim 1 is characterized in that, between opening for feed and light wave preheating casing, also is disposed with metal locator (10) and charging energy suppressor (11).
4. treatment system as claimed in claim 1, said casing material adopts stainless steel plate, and type of attachment adopts fastening piece to connect.
5. drilling fluid waste electromagnetic microwave treatment process; It is characterized in that; This method may further comprise the steps: screw feeder 1# is connected and is installed in the outside of oil base drilling fluid circulation tank with 2#; Directly sand separator, silt remover or whizzer being removed the waste that gets off down is transported to drilling cuttings and preserves in the case; Send into feed system by screw feeder 3# through feeding port again, make the drilling fluid waste successively through light wave preheating casing, electromagnetic oscillation casing, microwave heating casing through conveying belt, a part of drilling fluid waste becomes steam in the microwave heating casing; Flue gas condenser through being arranged on microwave heating casing top reclaims and is stored in the condensation fuel tank, and another part drilling fluid waste becomes the solid waste that can discharge through discharge system.
6. method as claimed in claim 5 is characterized in that, in light wave preheating casing, the preheating of control light wave makes the waste surface temperature reach 80 ℃.
7. method as claimed in claim 5 is characterized in that, in the electromagnetic oscillation case, the control electromagnetic oscillation makes the waste temperature rise to 150 ℃.
8. method as claimed in claim 5 is characterized in that, the frequency of microwave heating casing is 2450 ± MHz, and the controlled microwave heating rises to about 220 degree temperature of charge.
9. method as claimed in claim 5 is characterized in that, recovery again below 40 degree is discharged and in the condensation fuel tank, be condensed to vaporizing oil through flue gas condenser.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299294A (en) * | 2020-03-27 | 2020-06-19 | 武汉集斯广宜环保科技有限公司 | Comprehensive treatment system and method for oily waste |
| CN114000946A (en) * | 2021-10-19 | 2022-02-01 | 吴国民 | Acoustic, optical, magnetic and wave energy loading library |
| CN114344953A (en) * | 2021-12-31 | 2022-04-15 | 无锡欧彻机械设备有限公司 | Demulsification drying device and method for water-wax emulsion |
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| 商辉等: "石油钻井废弃物微波单模谐振腔处理新工艺", 《石油学报(石油加工)》, vol. 25, no. 3, 30 June 2009 (2009-06-30), pages 358 - 362 * |
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| CN111299294A (en) * | 2020-03-27 | 2020-06-19 | 武汉集斯广宜环保科技有限公司 | Comprehensive treatment system and method for oily waste |
| CN111299294B (en) * | 2020-03-27 | 2023-04-18 | 武汉集斯广宜环保科技有限公司 | Comprehensive treatment system and method for oily waste |
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