CN102826729B - 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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- CN102826729B CN102826729B CN201210336393.4A CN201210336393A CN102826729B CN 102826729 B CN102826729 B CN 102826729B CN 201210336393 A CN201210336393 A CN 201210336393A CN 102826729 B CN102826729 B CN 102826729B
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- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 239000002699 waste material Substances 0.000 title claims abstract description 54
- 239000012530 fluid Substances 0.000 title claims abstract description 31
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- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims description 33
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- Processing Of Solid Wastes (AREA)
- Constitution Of High-Frequency Heating (AREA)
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 wellbore construction process, produce a large amount of drilling cuttings and waste, because these drilling cuttings and waste are subject to the pollution of drilling fluid and resident fluid, oleaginousness in drilling cuttings and waste is higher, the highest over 30%, the producible drilling cuttings of a bite well and waste can reach hectostere, and plant is not raw, biological death, finally can bring disaster to we mankind's existence.Therefore oil-base mud drilling cuttings and waste being made to the needs that harmless treatment is environmental protection, is also the needs of our human survival.Discharge can be polluted surrounding environment arbitrarily, and the earth of depending on for existence to us causes the injury that cannot recover, and progressively dwindles the space of human survival.Therefore to the drilling cuttings producing in drilling process and waste, to could discharge through harmless treatment.Because the natural degradation of oil base drilling fluid waste is extremely difficult, the difficulty of manual handling is also quite large 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, to the more feasible method of disposal of oily sludge, be first through mechanical pretreatment, then to carry out a biological disposal upon, its advantage is to process thoroughly, but poor to the disposal of oily sludge effect of low granularity, and can not reclaim waste oil.
Summary of the invention
The object 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 Thermal Synthetic effect of light wave, hertzian wave and microwave, can make it mummification, dehydration and waste oil vaporization to the water-oil emulsion break milk separation in oily sludge, realize the recycling of oil, water and slag.Oil-contg in drilling cuttings and waste is reduced to below 2%, reaches discharging standards.Solve well on the one hand the problem of oil base drilling fluid waste pollution, also reduced on the other hand the waste of oil base drilling fluid oil or synthetic base.
Technical scheme of the present invention is as follows:
A kind of oil base drilling fluid waste electromagnetic microwave treatment system, comprise screw feeder, drilling cuttings preserves case, opening for feed, light wave preheating casing, electromagnetic oscillation casing, microwave heating box body, flue gas condenser and discharge port, screw feeder 1# connects screw feeder 2#, screw feeder 2# one end is arranged on drilling cuttings and preserves in case, waste is sent into drilling cuttings to be preserved in case, one end of screw feeder 3# is arranged on drilling cuttings and preserves in case, waste is exported to drilling cuttings and 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 box body, microwave heating box body top is provided with flue gas condenser, microwave heating box body outlet is provided with screw feeder 4#, in each casing, be provided with conveying belt, waste is transmitted in each casing.
In the top at screw feeder 1# (1) and screw feeder 2# (2), be provided with whizzer.
At drilling cuttings, preserve on case and can be provided with some vibratory screening apparatuss according to practical situation.
Between charging Energy suppression device and light wave preheating casing, be provided with metal detecting system.
Between microwave heating box body and discharging Energy suppression device, be provided with metal detecting system.
Discharge system is also connected with Controlling System.
Described oil base drilling fluid waste electromagnetic microwave treatment system can also arrange 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 isolation adsorption unit.
Casing material in described 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 feed bin.
A kind of oil base drilling fluid waste electromagnetic microwave treatment process, screw feeder 1# is connected with screw feeder 2#, and screw feeder 1# and screw feeder 2# are arranged on the outside of oil base drilling fluid circulation tank, directly by sand separator, silt remover or whizzer remove the waste getting off down and are transported to drilling cuttings and preserve in case, by frequency conversion input spiral conveyer, send into feed system again, by spiral conveyer, make drilling fluid waste successively by charging Energy suppression system, light wave preheating casing, electromagnetic oscillation casing, microwave heating box body, part drilling fluid waste becomes steam in microwave heating box body, through being arranged on the flue gas condenser of microwave heating box body top, reclaiming and be stored in condensation fuel tank, another part drilling fluid waste becomes through discharge system the solid waste that can discharge.
In light wave preheating casing, make waste surface temperature reach 80 ℃.
In electromagnetic oscillation case, make waste temperature rise to 150 ℃.
The frequency of microwave heating box body is 2450 ± 50MHz, and microwave heating rises to 220 degree left and right by temperature of charge, the separated volatilization fast from micropore of oil vaporization.
Vaporizing oil is discharged casing condensed exterior to 40 degree by smoke discharging pipe and is reclaimed below again.
Light wave radiation preheating:
In-plant light wave radiation is heated the surface temperature of waste to be heated higher than center and inside, more than light wave preheating section can be heated to rapidly 80 degree by normal temperature by material surface initial temperature, waste surface is heated and is greater than inside, and waste surface starts expanded generation microporous bubble.
Electromagnetic oscillation:
Hertzian wave penetration is in 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, oil in drilling wastes starts under micropore gas pressure separated with water, this stage temperature of charge rises to approximately 150 degree, the state of oil and water is not water-in-oil, and water and separating of oil rear water are all 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 material load, and air and metal cabinet do not absorb microwave, what material received is that electric energy conversion is the once conversion of micro-wave energy, without the twice transformation of conventional conduction heating.Adopting that the microwave frequency of 2450MHZ is per second can be by polar molecule vibratory movement 2,400,000,000 5 thousand ten thousand times.Waste is inner and surperficial when the surperficial preheating through light wave and electromagnetic separation, inner and surface has formed the expanding microporous of inner small and outside big densification, draught head and gravity are by the heavy earth precipitation lower end of quality, separating of oil to upper end, microwave heating rises to 220 degree left and right by temperature of charge, the separated volatilization fast from micropore of oil vaporization.
4, condensation is reclaimed
Vaporizing oil is discharged casing condensed exterior to 40 degree by smoke discharging pipe and is reclaimed below 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, 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, technique is simple, easy to operate, an electrical control cubicles, just can carry out substantial length of operation to equipment.
Accompanying drawing explanation
Fig. 1: electromagnetic microwave separation system general assembly vertical view
Fig. 2: electromagnetic microwave separation system schematic diagram
Fig. 3: electromagnetic microwave separation system accessory structure schematic 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 suppression device 10-metal locator 11-charging Energy suppression device
61-flue gas condenser 62-conveying belt 63-light wave preheating casing 64-electromagnetic oscillation casing 65-skid-mounted system, 66-microwave heating box body
Embodiment
Scale: between 5 ton hours: in July, 2012
Processing mode: process in strange land
Treating processes and result:
The oil patch of at least processing 2 tons per hour, initial oil-containing 20-30% left and right, moisture 5% left and right in soil.Water evaporation humidity discharging after microwave heating, the oil of residue 5% after heating.Utilize microwave equipment to be heated to 150 about degree to oil-containing material, electromagnetic microwave equipment duration of service every day is for being no more than 12 hours, the Intermediate Gray time of having a rest.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, before dry, the oil length of total material is in 30% left and right, the calculating de-oiling rate of weighing after dry has reached 95%, after microwave heating, is no more than 150 degree immediately with far infrared temperature measurement instrument test material hot face temperature, and the material after heating is tested final oil length less than 5% through you.Core temperature is no more than 220 degree.Do not reach white oil flash.
Casing is 304 stainless steels, and other supply bay and support adopt 202 stainless steels; Complete machine outward appearance is all steel material.
(1) microwave equipment technical indicator
1, system forms: microwave heating box body, microwave generator (water-cooling), microwave suppress system, material-transporting system (explosion separation motor), hot air delivery system (material preheating and spin manifold temperature atmosphere), control and detection system;
2, environment for use:
1) input power: 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 (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 stainless steel frosted plate manufacture;
6) microwave feed-in position: top feed-in
7) microwave suppressor having opening free height: import 70mm, outlet 70mm;
8) type of cooling: magnetron (water-cooling), transformer (oil immersed water cool heat radiation).
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 large opening door of cleaning, adopt the choke of the anti-microwave leakage of contemporary new and high technology, big area visual window (having light), is provided with opening-door automatic power-off protection.Top board light mouth is totally-enclosed.In case, drag rod spindle nose to adopt fixed connection to prevent sparking.
4, discharging system and microwave suppressor having:
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 is respectively equipped with 1200mm suppressor passage; Feed openings free height is 70mm, discharge port height 70mm.Suppressor design adopts isolated principle, prevents that microwave leakage from surpassing national regulation index 5mw/cm
2.(my company carries out and is less than 3mw/cm
2)
5, drying box:
1) dryer section is comprised of 8 microwave casings, the long 1170mm of casing, internal box width 1240mm (polytetrafluoroethylfiberglass fiberglass polybrochate travelling belt width: about 1050mm).Internal box adopts 304 stainless steel frosted plate manufactures.Employing outward flange connects.Internal box outer side configures the thermal insulation layer of each 75mm thickness, joins stainless steel cladding plate outward.8 loft drier total lengths are 9360mm altogether.Conveyer belt distance is 850mm overhead.
2) for ease of cleaning and observation operation, each casing is provided with the large opening door visible observation window of cleaning, and window adopts toughened glass to prevent that high temperature from bursting.Adopt the choke of accurate anti-microwave leakage, auto-breaking defencive 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, accomplishes steady, strong, attractive in appearance.
4) the wide about 500mm of microwave transformer yoke, transformer yoke is arranged at the side of microwave heating box body, and transformer, high voltage silicon rectifier stack, high-voltage capacitance are all arranged on transformer yoke, and 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) configuration thermocouple meter is filled with the mouth of pipe at hot blast, band analog quantity output signals, and hot blast temperature reaches 125 degree and at once quits work, and lower than 115 degree, again starts heating.
7) adopt two cover thermocouple temperature measurement instrument thermometrics, band analog quantity output signals, hot blast temperature reaches 125 degree and at once quits work, and lower than 115 degree, again starts heating.Connecting tube adopts stainless steel manufacture, outsourcing insulating cotton.Thermal source is configured by user.
8) between the 3rd casing and the 8th casing, respectively configure three 160mm*160mm humidity discharging mouths.Configure the temperature of a thermocouple temperature measurement instrument monitoring air outlet.
6, transmission system:
1) driving motor power: 3KW (explosion separation motor)
2) transmission speed: 0～5 m/min (frequency conversion is adjustable)
3) speed governing form: speed control by frequency variation
4) conveying form: adopt the close guipure of polytetrafluoroethylfiberglass fiberglass (mesh 1mm*1mm), the perk of transport tape both sides comes off while preventing material operation.Can heatproof 200 spend configuration automatic deviation rectifying device, the coarse adjustment of adjustable conveying belt and fine setting.User need provide source of the gas (0.5MPa).The source of the gas of normal air compressor;
7, Controlling System
1) control mode: conventional push button is controlled.
2) method of temperature control, position and specification of equipment, model: noncontact far infrared temperature measurement instrument, HC300/SWP
3) temperature-measuring range, precision: 0～300 ℃
4) microwave power regulation range: 0～100KW (power is adjustable)
5) other: door switch 8 points (open in working order fire door, protection power-off) 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 drained in time.
2) dehumidifying pipelines: stainless steel pipes.
3) hydrofuge: one of 2.2kw three-phase multiple wing type centrifugal blower fan.High temperature resistant explosion-proof, 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 market.
5) one, water circulating pump and conduit pipeline user are by on-the-spot autogamy.
6) require inflow temperature throughout the year lower than 35 degree, intake pressure is at 0.35MPa, and pressure of return water is less than 0.2MPa; Water inclusion-free and planktonic organism prevent blocking pipeline.
Claims (7)
1. an oil base drilling fluid waste electromagnetic microwave treatment system, it is characterized in that, comprise screw feeder (1, 2, 4, 8), drilling cuttings preserves case (3), opening for feed (5), light wave preheating casing (63), electromagnetic oscillation casing (64), microwave heating box body (66), flue gas condenser (61), discharge port (7), above preserving case, drilling cuttings is provided with some vibratory screening apparatuss, screw feeder 1# (1) connects screw feeder 2# (2), top at screw feeder 1# (1) and screw feeder 2# (2) is provided with whizzer, screw feeder 2# (2) one end is arranged on drilling cuttings and preserves in case (3), waste is sent into drilling cuttings to be preserved in case (3), one end of screw feeder 3# (4) is arranged on drilling cuttings and preserves in case, waste is exported to drilling cuttings and preserve case (3), the other end of screw feeder 3# (4) connects opening for feed (5), opening for feed (5) connects light wave preheating casing (63) successively, electromagnetic oscillation casing (64) and microwave heating box body (66), microwave heating box body top is provided with flue gas condenser (61), microwave heating box body (66) outlet is provided with screw feeder 4# (8), in each casing, be provided with conveying belt (62), waste is transmitted in each casing.
2. treatment system as claimed in claim 1, is characterized in that, at flue gas condenser (61), is outside equipped with flue gas discharging Energy suppression device (9).
3. treatment system as claimed in claim 1, is characterized in that, is also disposed with metal locator (10) and charging Energy suppression device (11) between opening for feed and light wave preheating casing.
4. treatment system as claimed in claim 1, is characterized in that, described casing material adopts stainless steel plate, and type of attachment adopts fastening piece to connect.
5. treatment system as claimed in claim 1; it is characterized in that, described system is also 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 discarded isolation adsorption unit.
6. a drilling fluid waste electromagnetic microwave treatment process, it is characterized in that, the method comprises the following steps: screw feeder 1# is connected with screw feeder 2#, and screw feeder 1# and screw feeder 2# are arranged on the outside of oil base drilling fluid circulation tank, directly by sand separator, silt remover or whizzer remove the waste getting off and are transported to drilling cuttings and preserve in case, above preserving case, drilling cuttings is provided with some vibratory screening apparatuss, by screw feeder 3#, through feeding port, send into feed system again, strong magnetic through feed system stirs, by conveying belt, make drilling fluid waste successively by light wave preheating casing, electromagnetic oscillation casing, microwave heating box body, part drilling fluid waste becomes steam in microwave heating box body, through being arranged on the flue gas condenser of microwave heating box body top, reclaiming and be stored in condensation fuel tank, another part drilling fluid waste becomes through discharge system the solid waste that can discharge,
In light wave preheating casing, control light wave preheating and make waste surface temperature reach 80 ℃;
In electromagnetic oscillation case, control electromagnetic oscillation and make waste temperature rise to 150 ℃;
The frequency of microwave heating box body is 2450 ± 50MHz, controls microwave heating and makes temperature of charge rise to 220 degree left and right.
7. method as claimed in claim 6, is characterized in that, vaporizing oil is discharged casing condensed exterior to 40 degree by smoke discharging pipe and reclaimed below again.
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| CN201210336393.4A CN102826729B (en) | 2012-09-13 | 2012-09-13 | Electromagnetic microwave treatment system and method for oil-based drilling fluid waste |
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| 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 |
| CN114000946A (en) * | 2021-10-19 | 2022-02-01 | 吴国民 | Acoustic, optical, magnetic and wave energy loading library |
| CN114344953B (en) * | 2021-12-31 | 2022-11-25 | 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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| JP2003126899A (en) * | 2001-10-25 | 2003-05-07 | Daiki Sangyo:Kk | Method and apparatus for organic cake heat treatment |
| KR100792689B1 (en) * | 2006-06-22 | 2008-01-09 | 김창성 | Device of Drying Waste Sludge |
| GB0622595D0 (en) * | 2006-11-14 | 2006-12-20 | Res Organisation | Electromagnetic treatment of contaminated materials |
| GB0823091D0 (en) * | 2008-12-18 | 2009-01-28 | Univ Nottingham | Exfoliating vermiculite and other minerals |
| CN202063811U (en) * | 2011-04-02 | 2011-12-07 | 陕西延长石油(集团)有限责任公司研究院 | Oily sludge treatment equipment |
| KR101131173B1 (en) * | 2011-07-25 | 2012-03-28 | (주)엠디아이 | Sludge drying machine using microwave having structure enabling control of sludge quantity |
| CN202808549U (en) * | 2012-09-12 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Oil-based drilling fluid waste electromagnetic microwave treatment system |
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