CN104961307A - Well-drilling solid waste harmless treatment technology and system - Google Patents
Well-drilling solid waste harmless treatment technology and system Download PDFInfo
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- CN104961307A CN104961307A CN201510291458.1A CN201510291458A CN104961307A CN 104961307 A CN104961307 A CN 104961307A CN 201510291458 A CN201510291458 A CN 201510291458A CN 104961307 A CN104961307 A CN 104961307A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention discloses a well-drilling solid waste harmless treatment technology and system. The technology comprises a, sludge particle screening separation, b, rock debris solid waste coarse grain treatment, c, dirty slurry high temperature pyrolysis, d, fine dust-containing poisonous and harmful exhaust-gas treatment, e, secondary high temperature burning pyrolysis treatment, f, spray quenching treatment and g, ultrafine dust particle exhaust-gas treatment. The well-drilling solid waste harmless treatment technology and system realize synchronous harmless treatment on sewage and sludge, realize thorough volume reduction, harmlessness and recycling treatment effects, prevent sludge caking blocking in an atomization high temperature pyrolysis tower, have high treatment efficiency, good treatment effects and low energy consumption, realize high barite powder recovery and utilization rate, has a small land occupation area and a low investment and operation cost, and is safe and environmentally friendly.
Description
Technical field
The present invention relates to the water base field of sludge treatment of petroleum drilling, particularly relate to a kind of drilling well solid waste harmless treatment process and treatment system.
Background technology
Drilling well solid refuse is the heterogeneous stable colloidal suspension system of one produced in petroleum exploration and development process, argillaceous, high-density weighting material, various chemical processing agent, sewage, sump oil and landwaste etc.
Petroleum drilling solid waste mud is a kind of Chemical Composition waste mud not having calorific value, close bacterium, germ, sporangiocyst, hazardous contaminant etc. containing the natural solid particulate such as solubility salt, ground barium sulfate, wilkinite, suspended substance, polyacrylamide, sulfonated gilsonite, hydrogen sulfide, microorganism, colloid substances in it, also have the chemical additive such as acids, oxygen scavenger, lubricant, sterilant, scale inhibitor injecting stratum.At present, the method processed mud mainly contains biological degradation lignin-sludge method, chemical agent acid-base neutralisation (being commonly called as " desorption ") treatment process, sludge curing method for sludge treatment, sludge drying processing method and sludge incineration processing method, high temperature pyrolysis treatment process etc.
Biological degradation lignin-sludge mode is not suitable for petroleum drilling solid waste sludge treatment, its reason is that petroleum drilling solid waste mud belongs to high-adhesion, rapid solidification, particle is uneven, water ratio is high, without calorific value, the chemical sludge rubbish that second dehydration is more difficult, remove and municipal wastes, other industrial refuse of calorific value and petroleum drilling oily sludge is had to have outside far different difference, the Chemical Composition of its drilling well solid waste mud itself is also quite complicated, there is obvious time period difference, be mainly reflected in: every a bite petroleum drilling is in different regions, the operating mode of its degree of depth of location and changeable geological formations is all different, ground barium sulfate wherein, polyacrylamide, sulfonated gilsonite adds at times, the waste mud of a upper period and the flow time of subsequent period waste mud and operation operating mode not readily are grasped, control, the Chemical Composition waste mud causing each period different needs to carry out effective classification and deposits respectively, such actually operating difficulty of getting up is very large.After the different chemical composition waste mud of Different periods mixes mutually, just the more difficult reinjected water carrying out effective separation acquisition and can again utilize, so current actual practice is that the sewage collecting be separated is sent to somewhere again and focuses in water tank storage tank.
Chemical agent acid-base neutralisation (or " desorption ") treatment process and cement solidification treatment process are that two kinds of the most frequently used modes of petroleum drilling solid waste mud are disposed in process at present, they are all that Bian chemical agent carries out acid-base neutralisation process to water base sludge slurry and obtains neutral mud, then landfill or cement solidification process after pressure Virgin mummification.These two kinds of methods theoretically, can adopt allotment chemical solvents to carry out acid-base neutralisation process to drilling well solid waste mud, the water based waste mud of water ratio >=90% be obtained the neutral mud of water ratio≤75% by multiple solid-liquid separation techniques such as pressure Virgin.But it is (land at different region sections that on-site actual situations is petroleum drilling, marine) and the difference (oil field of kind, oil-gas field) the degree of depth and the operating mode of changeable geological formations all different, the grout composition of every a bite drilling well is quite complicated, often need N kind chemical ingredients medicament to meet quantity discharged and the Chemical Composition combination formula thereof of stochastic and dynamic drilling well solid waste sludge slurry, therefore, during drilling well tripping operation, take to add at times the chemical additive of various combination formula produce the flow time of corresponding water base waste sludge slurry and operation operating mode is that comparatively difficulty or ease are grasped, control, often needing classifies the wastewater slurry of Different periods timely and accurately deposits respectively, corresponding chemical agent (coagulating agent must be prepared pointedly simultaneously, flocculation agent, magnetic auxiliary agent) etc. carry out acid-base neutralisation process, this mode at the scene in actually operating difficulty very large.In addition, the state of the art of on-the-spot actually operating personnel and sense of responsibility of respecting work, also be that can drilling well solid waste mud water slurry adopt chemical agent acid-base neutralisation treatment process to obtain one of important factor of satisfactory neutral mud at the scene, as can be seen here, the water base mud of neutral landwaste being piled into mountain before this live through to have after rainwater drenches a large amount of harmful poisonous black effluent stream out again environmental pollution be inevitable.
New " environmental law " within 2015, implemented clearly prohibits the use nonstandard chemical agent acid-base neutralisation (or " desorption ") and cement solidification process two kinds of mode process to dispose petroleum drilling solid waste mud.
The physics of mud, chemistry and biological nature is changed while sludge drying processing method can make Fibrotic drying sludge process, service temperature (for mud granule) >100 DEG C, except effectively killing except pathogenic bacteria, mud volume can also be made significantly to reduce, and stink is eliminated.But this processing method inapplicable petroleum drilling solid waste sludge treatment, and its energy consumption is high, equipment is complicated, invest and working cost is high, minimizing is also thorough, and also also will take the measure such as condensation, deodorizing to evaporant, comprehensive cost is higher.
Sludge incineration processing method can make that the material such as whole organic matters, pathogenic agent of mud is oxidized at 850 ~ 1000 DEG C, pyrolysis being entirely destroyed, and is the treatment process subtracting appearanceization, innoxious and resource utilization the most thoroughly.Sludge incineration process is in the market all have higher calorific value for mud itself, utilize the burning of sludge garbage self to produce heat energy to generate electricity or heat supply, the thermal source that burner provides just help burning within the short period of time just starting igniting, makes to quit work when fire box temperature reaches burner when sludge garbage can lean on the normal operation of calorific value maintenance of self to burn; Or for the higher huge malicious hazardous substance of content in sludge garbage or extremely infect product, do not leave the calorific value of mud itself or other auxiliary fuel all the time to accompany the process of burning.
Mainly contain three kinds of sludge incinerators in the market, i.e. bubbling style fluidized bed incinerator, circulating fluidized bed incinerator and rotary incinerator, these three kinds of sludge incineration treatment facilities be all completely by mud, the calorific value of rubbish self or other auxiliary fuel to accompany burning, and mud and flame mix, completely only for the incinerator burning municipal wastes and industrial refuse, the process of drilling well solid waste mud can not be applicable at all; And above-mentioned three kinds of best sludge incineration treatment facilities are all fixed venue, fixing sludge garbage characteristic, fixing Large Copacity rubbish and large-tonnage incinerator equipment, and subsidiary cogeneration or heating and other by-product utilize the higher investment of return value to be benefited project again, it does not meet large and equipment confined condition (spatial volume, floor space, weight, power, the safety etc.) requirement of petroleum drilling solid waste sludge characteristics, place, field mobility.
Rotary kiln formula high temperature pyrolysis treatment process is petroleum drilling solid waste sludge disposal technology technique comparatively advanced at present, accomplish truly to subtract appearanceization, innoxious and recycling treatment disposal options up hill and dale, but because of the height of drilling well solid waste mud bond, the characteristic of rapid solidification, often cause caking latch up phenomenon occurs in rotary kiln, affect it and normally run and output; In addition, the shortcomings such as the collection rate that this treatment process also exists that floor space is comparatively large simultaneously, sewage sludge fails the recoverable such as harmlessness disposing and ground barium sulfate solid materials is in the lump low.
To sum up, be in chemical acid alkali entirely to the processing mode of petroleum drilling solid waste mud in the market and disposal options exists many defects and a difficult problem, do not reach the treatment effect subtracting appearanceization, innoxious and resource utilization up hill and dale, still can produce secondary pollution problem, although rotary kiln formula high temperature pyrolysis technology can realize subtracting the most thoroughly the treatment effect of appearanceization, innoxious and resource utilization to a certain extent, but still there is above-mentioned weak point, although pipe spray type high temperature pyrolysis technical matters mode can realize to a greater extent subtracting appearanceization the most thoroughly so far, the processing mode of innoxious and resource utilization, but existing drilling well fixed-end forces does not also apply treatment technology and the disposal options of the process of upward pressure spraying type high temperature pyrolysis, therefore, in the urgent need to specialized designs, manufacturing one can by sewage and mud harmlessness disposing in the lump, can realize thoroughly subtracting appearanceization, the treatment effect of innoxious and resource utilization, high temperature pyrolysis kiln generation mud caking blockage problem can be avoided, processing efficiency is high, the recycling rate of ground barium sulfate etc. is high, floor space is little, investment and operation cost low and the innoxious process for treating technique for drilling well solid waste sludge slurry of safety and environmental protection and treatment system.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provide a kind of can by sewage and mud in the lump harmlessness disposing, can realize thoroughly subtracting appearanceization, innoxious and resource utilization treatment effect, can avoid being atomized in high temperature pyrolysis tower there is mud caking blockage problem, processing efficiency is high, better processing effect, energy consumption are lower, the recycling rate of ground barium sulfate etc. is high, floor space is little, investment and operation cost low and the drilling well solid waste harmless treatment process of safety and environmental protection and treatment system.
The present invention is for solving the problems of the technologies described above, and its technical scheme adopted is as follows:
A kind of drilling well solid waste harmless treatment process, comprises the steps:
(a) mud granule screening and separating: landwaste mud is carried out solid-liquid screening and obtains landwaste solid waste coarse particles and sludge slurry, and it is medium pending for slurry transfer mechanism this landwaste solid waste coarse particles and sludge slurry to be delivered to respectively landwaste solid waste feed bin and pressure;
(b) landwaste solid waste coarse particles process: solid waste material is sent in landwaste solid waste high temperature pyrolysis stove together with above-mentioned landwaste solid waste coarse particles and carries out high temperature pyrolysis process, and produce innoxious solid materials and the toxic harmful exhaust gas containing granule dust, and it is medium pending that this toxic harmful exhaust gas containing granule dust is delivered to separator;
(c) sludge slurry high temperature pyrolysis: sludge slurry is become high pressure sludge slurry for slurry transfer mechanism and is delivered in atomization high temperature pyrolysis tower by above-mentioned pressure, high pressure sludge slurry become little droplet through high pressure mixed flow jet spread and carry out with high-temperature hot air first reverse walking each other, after for merges following current campaign gas, consolidate two-phase heat exchange, complete instantaneously and drying and high temperature pyrolysis are carried out to sludge slurry and obtains innoxious coarse particles material and the toxic harmful exhaust gas containing dust, and it is medium pending that this toxic harmful exhaust gas containing dust is delivered to above-mentioned separator;
D () is containing the toxic harmful exhaust gas process of fine dust: above-mentioned separator carries out separating treatment to the toxic harmful exhaust gas containing granule dust obtained by step (b) and (c) respectively and the toxic harmful exhaust gas containing dust and obtains innoxious fine dust particles and the waste gas containing ultrafine dust particle, and this waste gas containing ultrafine dust particle is delivered to secondary combustion chamber with pending;
E () secondary high-temperature burns pyrolysis processing: above-mentioned secondary combustion chamber carries out secondary high-temperature to the waste gas containing ultrafine dust particle produced by step (d) and burns pyrolysis and obtain ultra tiny dust granules waste gas;
(f) atomizing chilling process: the ultra tiny dust granules waste gas obtained by step (e) is delivered to quenching apparatus and carries out atomizing chilling process;
(g) ultra tiny dust granules off gas treatment: via the ultra tiny dust granules waste gas after the process of step (f) atomizing chilling successively through bag pulse dedusting, activated carbon filtration and spray carrying out washing treatment, will be discharged after meeting environmental requirement.
In above-mentioned steps (a), landwaste mud produces via vibratory screening apparatus, desanding silt remover and whizzer.
In above-mentioned steps (c), the mud be delivered in atomization high temperature pyrolysis tower first becomes high pressure sludge slurry, then little droplet is formed through high pressure mixed flow jet spread, this little droplet and high-temperature hot air carry out first reverse walking each other, afterwards for merging the gas of following current campaign, solid two-phase direct contact type heat exchange, greatly strengthen its exchange capability of heat, the drying to sludge slurry and high temperature pyrolysis two procedures is completed within tens of second, not only increase the high temperature pyrolysis efficiency of atomization high temperature pyrolysis tower, but also reach the object of harmlessness disposing for a full due; Secondly, to in the drying of sludge slurry and high temperature pyrolysis operation, little droplet not with thermal source combustion fuel and flame contact, namely little droplet is separated completely with thermal source combustion fuel and flame, its temperature control precision is high, the envrionment temperature of high hot pyrolysis zone is even, further increases the high temperature pyrolysis efficiency to sludge slurry, safety and environmental protection; The drying of whole sludge slurry and high temperature pyrolysis process are all disposable in the closed environment in atomization high temperature pyrolysis tower completing, heat utilization rate is high, and the high insulating effect of atomization high temperature pyrolysis tower, heat energy damage is little, and it is lower that these all make to utilize atomization high temperature pyrolysis tower to carry out energy consumption that is dry and pyrolysis; In addition, in sludge slurry, the physical property of the various solid matter composition such as ground barium sulfate, wilkinite originally, chemical property are preserved completely well, the innoxious granule materials obtained after drying, high temperature pyrolysis is all less than 40 orders, the recycling rate of ground barium sulfate etc. is significantly improved, achieves the treatment effect thoroughly subtracting appearanceization, innoxious and resource utilization truly.
In above-mentioned steps (c), sludge slurry becomes the trickle mud monomer particle of little droplet shape through high pressure mixed flow jet spread, this trickle mud monomer particle has good dispersiveness, mobility, with after high-temperature hot air fully contacts and carries out heat exchange, the moisture of flash evapn more than 95% completes the drying process of first, mud monomer particle is made to lose high-adhesion and rapid solidification characteristic, so just can avoid being atomized in high temperature pyrolysis tower the problem occurring the blocking of mud caking, thus contribute to the processing efficiency improving atomization high temperature pyrolysis tower.
In addition, atomization high temperature pyrolysis tower is the vertical high-temperature pyrolysis plant to high-altitude development, floor space is little, be conducive to reducing soil excavation, backfilling smooth cost of investment and operation cost, therefore compared with carrying out high temperature pyrolysis process with traditional employing horizontal-type high temperature pyrolysis plant, adopt atomization high temperature pyrolysis tower to carry out high temperature pyrolysis to sludge slurry, substantially reduce floor space, reduce investment and operation cost.
In above-mentioned steps (d), (e), (f) and (g), separator carries out separating treatment to the toxic harmful exhaust gas containing granule dust and the toxic harmful exhaust gas containing dust and obtains innoxious fine dust particles and the waste gas containing ultrafine dust particle; Wherein, this innoxious fine dust particles is collected by innoxious fine dust particles collecting conveyor structure, secondary combustion chamber should be delivered to containing the waste gas of ultrafine dust particle carry out secondary high-temperature burning pyrolysis and obtain ultra tiny dust granules waste gas, this ultra tiny dust granules waste gas via after atomizing chilling process successively through bag pulse dedusting, activated carbon filtration and spray carrying out washing treatment, discharged after meeting environmental requirement, safety and environmental protection.
Particularly, in step (f), ultra tiny dust granules waste gas is delivered to quenching apparatus and carries out atomizing chilling process, ultra tiny dust granules waste gas quick refrigeration within 1.5s can be lower than 200 by this atomizing chilling process
othe cryogenic gas of C, prevents dioxin 300 ~ 550
othe temperature range of C repeats to generate.
In sum, drilling well solid waste harmless treatment process of the present invention achieves the object of sewage and mud in the lump harmlessness disposing.
Improve as to the one of technical scheme of the present invention, in above-mentioned steps (a), landwaste mud is transported in solid-liquid screening mechanism by mud spiral conveyer and carries out solid-liquid screening.
In step (a)., adopt mud spiral conveyer that landwaste mud is delivered to solid-liquid screening mechanism, namely can ensure that water base sewage, mud and the hazardous and noxious substances of drilling well is not landed completely, so just, the detritus sewage pond in existing treatment facility can be cancelled, reduce land occupation area during drilling operation; In addition, this mud spiral conveyer comprises N group mud screw conveyor (N is natural number).
Improve as to the one of technical scheme of the present invention, in above-mentioned steps (g), the slaked lime remaining after bag pulse dedusting by above-mentioned ultra tiny dust granules waste gas and gac are delivered to secondary combustion indoor and carry out secondary high-temperature burning pyrolysis processing.The slaked lime be left after bag pulse dedusting and gac are delivered to secondary combustion indoor and carry out secondary high-temperature burning pyrolysis processing, such design improves the Safety and Environmental Protection of described drilling well solid waste harmless treatment process.
Present invention also offers a kind for the treatment of system for above-mentioned drilling well solid waste harmless treatment process, its technical scheme adopted is as follows:
Comprising mud does not land for slurry assembly, cutting grain high temperature pyrolysis assembly, mud high temperature pyrolysis assembly and toxic and harmful process assembly;
Mud does not land and supplies slurry assembly to comprise above-mentioned mud spiral conveyer, solid-liquid screening mechanism, landwaste solid waste feed bin and pressure for slurry transfer mechanism, and the discharge port of this mud spiral conveyer is communicated with the opening for feed of solid-liquid screening mechanism, and this landwaste solid waste feed bin is communicated with the second discharge port with the first discharge port of solid-liquid screening mechanism respectively with the opening for feed of pressure for slurry transfer mechanism;
Above-mentioned cutting grain high temperature pyrolysis assembly comprises landwaste solid waste high temperature pyrolysis stove;
The hot air source that above-mentioned mud high temperature pyrolysis assembly comprises atomization high temperature pyrolysis tower and is connected with atomization high temperature pyrolysis tower;
Above-mentioned toxic and harmful process assembly comprises innoxious fine dust particles collecting conveyor structure, ultrafine dust particle waste gas treatment mechanism and separator;
Above-mentioned landwaste solid waste feed bin is communicated with the opening for feed being atomized high temperature pyrolysis tower with landwaste solid waste high temperature pyrolysis stove respectively with the discharge port of pressure for slurry transfer mechanism, and this landwaste solid waste high temperature pyrolysis stove is all communicated with the inlet mouth of above-mentioned separator with the air outlet of atomization high temperature pyrolysis tower, and the discharge port of this separator and air outlet are communicated with ultrafine dust particle waste gas treatment mechanism with above-mentioned innoxious fine dust particles collecting conveyor structure respectively.
In drilling well solid waste innocuity disposal system of the present invention, comprising mud does not land for slurry assembly, namely can ensure that water base sewage, mud and the hazardous and noxious substances of petroleum drilling is not landed completely, so just, the detritus sewage pond in existing treatment facility can be cancelled, reduce land occupation area during petroleum drilling operation, namely mud do not land for slurry assembly be provided with the floor space helping reduce described drilling well solid waste innocuity disposal system.
In cutting grain high temperature pyrolysis assembly, landwaste solid waste high temperature pyrolysis stove is used for carrying the landwaste solid waste coarse particles of coming to carry out high temperature pyrolysis process to solid waste material and landwaste solid waste feed bin, such design avoids landwaste solid waste high temperature pyrolysis stove, when processing saline bed mud, mud rapid solidification latch up phenomenon in kiln occurs, greatly can reduce the length dimension of this landwaste solid waste high temperature pyrolysis stove like this, contribute to the land occupation area reducing described drilling well solid waste innocuity disposal system, also reduce the expense that excavation is smooth, backfill soil.
In mud high temperature pyrolysis assembly, atomization high temperature pyrolysis tower is used for carrying out high temperature pyrolysis to sludge slurry, sludge slurry becomes high pressure sludge slurry under pressure is for the effect of starching transfer mechanism, high pressure sludge slurry is becoming little droplet through high pressure mixed flow jet spread, its surface-area greatly increases, little droplet is the mud granule of droplet form in fact, this mud granule and regulated out by hot-air distributor 600 ~ 950
ofirst reverse contact each other between C high-temperature hot air, rear stream for merging carry out heat exchange along contact, such heat exchange method can in flash evapn mud granule 95% ~ 98% moisture content, not only in several tens of seconds, high temperature pyrolysis is carried out to sludge slurry, and make mud granule lose high-adhesion and rapid solidification characteristic, avoid in atomization high temperature pyrolysis tower and occur mud caking blockage problem.Wherein, the mud granule of droplet state is separated completely with thermal source combustion fuel and flame, greatly improve the temperature control precision of atomization high temperature pyrolysis tower, and make the high temperature pyrolysis region environment homogeneous temperature being atomized high temperature pyrolysis tower, contribute to improving the high temperature pyrolysis efficiency to sludge slurry, because the drying of whole sludge slurry and high temperature pyrolysis process are all disposable in the closed environment in atomization high temperature pyrolysis tower completing, heat utilization rate is high, and the high insulating effect of atomization high temperature pyrolysis tower, heat energy damage is little, it is lower that these all make to utilize atomization high temperature pyrolysis tower to carry out energy consumption that is dry and pyrolysis, in addition, the innoxious granule materials fine uniform obtained after dry high temperature pyrolysis, the physical property, chemical property etc. of the various solid matter composition such as ground barium sulfate, wilkinite of script in drilling well solid waste is played a very good protection, improve the recycling rate to ground barium sulfate etc., achieve the treatment effect thoroughly subtracting appearanceization, innoxious and resource utilization truly.
In toxic and harmful process assembly, the toxic harmful exhaust gas containing granule dust that above-mentioned separator is used for landwaste solid waste high temperature pyrolysis stove exports is separated with the toxic harmful exhaust gas containing dust that atomization high temperature pyrolysis tower exports and obtains innoxious fine dust particles and the waste gas containing ultrafine dust particle, and above-mentioned innoxious fine dust particles collecting conveyor structure is for collecting this innoxious fine dust particles, and above-mentioned ultrafine dust particle waste gas treatment mechanism is for the treatment of the waste gas containing ultrafine dust particle.
Above-mentioned atomization high temperature pyrolysis tower is provided with gravity explosive door, because this atomization high temperature pyrolysis tower inside is tiny structure and is the semi closed container be communicated with air, some inflammable gases can be produced in the high temperature pyrolysis process of sludge slurry, source is ignited once run into naked light etc., this atomization high temperature pyrolysis tower just has the danger of blast, therefore the installation of gravity explosive door can avoid this atomization high temperature pyrolysis tower to blast, and greatly strengthen its safety performance.
Improve as to the one of drilling well solid waste innocuity disposal system of the present invention, the second discharge port of above-mentioned solid-liquid screening mechanism and pressure are provided with mud tank between the opening for feed starching transfer mechanism.
When drilling operation be in 2 open the additives, 3 such as half interpolation sulfonated gilsonite powder open or 4 be full of load operation or improper fix a breakdown come down in torrents landwaste mud in a large number time, the landwaste mud ejected continuously is just delivered directly in solid-liquid screening mechanism and carries out solid-liquid two-phase laminated flow; Just allow landwaste mud be transported in mud tank when drilling operation is in a small amount of and discontinuity discharge landwaste mud store, only have and after a certain standard is completely arrived in mud tank storage, restart solid-liquid screening mechanism carry out solid-liquid two-phase laminated flow, therefore the setting of mud tank can utilize solid-liquid screening mechanism more rationally and effectively, contribute to the operation cost reducing described drilling well solid waste innocuity disposal system.
In addition, in the step (a) of described drilling well solid waste harmless treatment process, when sludge slurry is stored in after in mud tank, agitator is adopted to stir the sludge slurry in mud tank, sludge slurry is made to become more even, and without precipitated and separated, and ensure that the solid content of sludge slurry is greater than 75%, such design ensure that the atomizing effect to sludge slurry, thus contributes to strengthening the pyrolysis efficiency of atomization high temperature pyrolysis tower and the pyrolysis effect to sludge slurry.Wherein, agitator comprises mechanical stirrer and air pressure agitator.
Improve as to the one of drilling well solid waste innocuity disposal system of the present invention, above-mentioned solid-liquid screening mechanism comprises multiple eddy flow vibratory screening apparatus be arranged in parallel.Valve is equipped with between the opening for feed of each eddy flow vibratory screening apparatus and the discharge port of mud spiral conveyer 4, once can select the eddy flow vibratory screening apparatus simultaneously starting 1 or 2 or more as required, contribute to improving the solid-liquid screening efficiency to landwaste mud, in addition, when wherein 1 or 2 or part eddy flow vibratory screening apparatus break down, the prediction scheme that other eddy flow vibratory screening apparatus can be used as in emergency circumstances is supplemented, to guarantee the normal operation of whole drilling operation.
Improve as to the one of drilling well solid waste innocuity disposal system of the present invention, above-mentioned pressure comprises for slurry transfer mechanism the surge pump, pressure slurry pipeline, slurry gun and the high pressure mixed flow nozzle that are communicated with successively, and this slurry gun and high pressure mixed flow nozzle are positioned at the region, stage casing, inside of above-mentioned atomization high temperature pyrolysis tower.
Pressure is designed to the surge pump, pressure slurry pipeline, slurry gun and the high pressure mixed flow nozzle that are communicated with successively for slurry transfer mechanism, first, such design makes the conveying of sludge slurry carry out in totally enclosed pipeline, can avoid being atomized high temperature pyrolysis tower completely because of the blocking adopting the mode of movements such as traditional screw conveyor, rotary conveyor and lift and cause, sludge slurry leaks and transport efficiency is low problem, safety and environmental protection, reduce the maintenance workload of described drilling well solid waste innocuity disposal system, be conducive to the reduction of operation cost; Secondly, adopt pressure slurry pipeline conveying sludge slurry, its transport capacity will be far longer than the transport capacity of screw conveyor, contributes to strengthening the transport efficiency to sludge slurry.
Supply in slurry transfer mechanism at the pressure of said structure, be provided with thermal insulation layer and water-cooling jacket outside slurry gun, this insulation layer and water-cooling jacket can prevent slurry gun in hot environment to be greater than 120 because being heated
oafter C, sludge slurry rapid solidification lumps and blocks slurry gun.
Improve as to the one of drilling well solid waste innocuity disposal system of the present invention, above-mentioned atomization high temperature pyrolysis tower inside is provided with hot-air distributor, and this hot-air distributor is communicated with hot air source.Arranging of this hot-air distributor can make to carry the hot blast of coming to be more evenly distributed in atomization high temperature pyrolysis tower by hot air source, contributes to strengthening atomization high temperature pyrolysis tower to the atomizing effect of high pressure sludge slurry and nebulization efficiency.
Improve as to the one of drilling well solid waste innocuity disposal system of the present invention, above-mentioned ultrafine dust particle waste gas treatment mechanism comprises the secondary combustion chamber, quenching apparatus and the dedusting mechanism that are communicated with successively.
Preferably, above-mentioned dedusting mechanism comprises pulsed jet cloth filter and the material recycle mechanism that is connected respectively with the discharge port of this pulsed jet cloth filter and air outlet and active carbon filtering device, and this pulsed jet cloth filter is also connected with slaked lime and gac jet apparatus, and the air outlet of this active carbon filtering device is also connected with spray washing tower.
In drilling well solid waste innocuity disposal system of the present invention, above-mentioned atomization high temperature pyrolysis tower, separator, pulsed jet cloth filter and the density of landwaste solid waste high temperature pyrolysis stove according to different solid materials and the size of particle diameter, material is achieved effectively be separated classification and collect and again recycle, accomplish the process thoroughly subtracting appearanceization, innoxious and resource utilization truly.
The discharge port of above-mentioned atomization high temperature pyrolysis tower is collected e Foerderanlage by material particles and is connected with the first feed bin, the innoxious coarse particles material produced after carrying out high temperature pyrolysis with automatic transport atomization high temperature pyrolysis tower to sludge slurry; Above-mentioned innoxious fine dust particles collecting conveyor structure comprises fine granular materials and collects e Foerderanlage and collect with this fine granular materials the second feed bin that e Foerderanlage is communicated with; Above-mentioned material recycle mechanism comprises ultra-fine grain material and collects e Foerderanlage and collect with this ultra-fine grain material the 3rd feed bin that e Foerderanlage is communicated with; The discharge port of above-mentioned landwaste solid waste high temperature pyrolysis stove is connected with the 4th feed bin by landwaste material collection e Foerderanlage, this material particles collection e Foerderanlage, fine granular materials collection e Foerderanlage, ultra-fine grain material collection e Foerderanlage and landwaste material collection e Foerderanlage achieve the automatic transport to material, significantly reduce the labour intensity of staff, contribute to realizing automatic production.
In the technical scheme of the present invention, to be allly not specifically noted, all by adopting the conventional means in this area to realize the technical program.
Therefore, drilling well solid waste harmless treatment process provided by the invention and treatment system can not only by sewage and mud harmlessness disposings in the lump, and can realize thoroughly subtracting the treatment effect of appearanceization, innoxious and resource utilization, can avoid occurring mud caking blockage problem in atomization high temperature pyrolysis tower, processing efficiency is high, better processing effect, energy consumption is lower, the recycling rate of ground barium sulfate etc. is high, and floor space is little, investment and the low and safety and environmental protection of operation cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the schematic diagram of drilling well solid waste harmless treatment process in the present embodiment one;
Fig. 2 is the schematic diagram of drilling well solid waste innocuity disposal system in the present embodiment two;
In accompanying drawing, 1 is vibratory screening apparatus, 2 is desanding silt remover, 3 is whizzer, 4 is mud spiral conveyer, 5 is solid-liquid screening mechanism, 6 is landwaste solid waste feed bin, 7 is mud tank, 8 for pressure is for slurry transfer mechanism, 9 is atomization high temperature pyrolysis tower, 10 is material particles collection e Foerderanlage, 11 is the first feed bin, 12 is hot air source, 13 is separator, 14 is fine granular materials collection e Foerderanlage, 15 is the second feed bin, 16 is secondary combustion chamber, 17 is quenching apparatus, 18 is pulsed jet cloth filter, 19 is ultra-fine grain material collection e Foerderanlage, 20 is the 3rd feed bin, 21 is active carbon filtering device, 22 is induced draft fan, 23 is spray washing tower, 24 are discharged after meeting environmental requirement, 25 is solid waste material, 26 is landwaste solid waste high temperature pyrolysis stove, 27 is landwaste material collection e Foerderanlage, 28 is the 4th feed bin, 29 is slaked lime and gac jet apparatus.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one:
Present embodiments provide a kind of drilling well solid waste harmless treatment process, as shown in Figure 1, comprise the steps:
(a) mud granule screening and separating: the landwaste mud produced by vibratory screening apparatus 1, desanding silt remover 2 and whizzer 3 is obtained granularity be greater than 40 object landwaste solid waste coarse particless and granularity is less than 40 object sludge slurries by carrying out solid-liquid screening in mud spiral conveyer 4 long distance delivery to solid-liquid screening mechanism 5, and it is medium pending that this landwaste solid waste coarse particles is delivered to landwaste solid waste feed bin 6, and it is medium pending for slurry transfer mechanism 8 that this sludge slurry is delivered to pressure via mud tank 7;
Wherein, when sludge slurry being stored in after in mud tank 7, adopting mechanical stirrer and air pressure agitator to stir the sludge slurry in mud tank 7, making sludge slurry become more even, and without precipitated and separated, and ensure that the solid content of sludge slurry is greater than 75%;
(b) landwaste solid waste coarse particles process: solid waste material 25 is sent in landwaste solid waste high temperature pyrolysis stove 26 together with above-mentioned landwaste solid waste coarse particles and carries out high temperature pyrolysis process, and produce innoxious solid materials and the toxic harmful exhaust gas containing granule dust, and it is medium pending that this toxic harmful exhaust gas containing granule dust is delivered to separator 13, and this innoxious solid materials via landwaste material collection e Foerderanlage 27 automatic transport in the 4th feed bin 28, wait for recycling;
C () sludge slurry high temperature pyrolysis: sludge slurry is become high pressure sludge slurry for slurry transfer mechanism 8 and is delivered in atomization high temperature pyrolysis tower 9 by above-mentioned pressure, this high pressure sludge slurry becomes little droplet and with regulated out by hot-air distributor 600 ~ 950 through high pressure mixed flow jet spread
othe high-temperature hot air of C carries out first reverse walking each other, the rear gas for merging following current campaign, solid two-phase contact heat exchange, complete instantaneously and drying and high temperature pyrolysis are carried out to sludge slurry and obtains innoxious coarse particles material and the toxic harmful exhaust gas containing dust, and it is medium pending that this toxic harmful exhaust gas containing dust is delivered to above-mentioned separator 13, this innoxious coarse particles material is then collected in e Foerderanlage 10 automatic transport to the first feed bin 11 via material particles, waits for recycling;
D () is containing the toxic harmful exhaust gas process of fine dust: above-mentioned separator 13 carries out separating treatment to the toxic harmful exhaust gas containing granule dust obtained by step (b) and (c) respectively and the toxic harmful exhaust gas containing dust and obtains innoxious fine dust particles and the waste gas containing ultrafine dust particle, and this waste gas containing ultrafine dust particle is delivered to secondary combustion chamber 16 with pending, this innoxious fine dust particles is then collected by innoxious fine dust particles collecting conveyor structure, waits for recycling;
E () secondary high-temperature burns pyrolysis processing: above-mentioned secondary combustion chamber 16 is 950 ~ 1100
ocarry out secondary high-temperature to the waste gas containing ultrafine dust particle produced by step (d) under C burn pyrolysis and obtain ultra tiny dust granules waste gas;
(f) atomizing chilling process: the ultra tiny dust granules waste gas obtained by step (e) is delivered to quenching apparatus 17 and carries out atomizing chilling process, make 800
oc high-temperature gas is sharply cooled to lower than 200 in 1.5s
othe cryogenic gas of C;
(g) ultra tiny dust granules off gas treatment: filter via the ultra tiny dust granules waste gas after the process of step (f) atomizing chilling and spray washing tower 23 carrying out washing treatment through pulsed jet cloth filter 18 dedusting, active carbon filtering device 21 successively, give discharge 24 after meeting environmental requirement, and harmful materials such as slaked lime remaining after bag pulse dedusting and gac are collected e Foerderanlage 19 and the 3rd feed bin 20 via ultra-fine grain material be delivered in above-mentioned secondary combustion chamber 16 and carry out secondary high-temperature and burn pyrolysis processing.
Embodiment two:
Present embodiments provide a kind for the treatment of system for drilling well solid waste harmless treatment process in embodiment one, as shown in Figure 2, comprising mud does not land for slurry assembly, cutting grain high temperature pyrolysis assembly, mud high temperature pyrolysis assembly and toxic and harmful process assembly;
This mud does not land and supplies slurry assembly to comprise above-mentioned vibratory screening apparatus 1, desanding silt remover 2, whizzer 3, mud spiral conveyer 4, solid-liquid screening mechanism 5, landwaste solid waste feed bin 6 and pressure for slurry transfer mechanism 8, and the discharge port of this mud spiral conveyer 4 is communicated with the opening for feed of solid-liquid screening mechanism 5, and the opening for feed of this landwaste solid waste feed bin 6 is communicated with the first discharge port of solid-liquid screening mechanism 5, this pressure is provided with mud tank 7 for starching between the opening for feed of transfer mechanism 8 and the second discharge port of solid-liquid screening mechanism 5;
This cutting grain high temperature pyrolysis assembly comprises above-mentioned landwaste solid waste high temperature pyrolysis stove 26, and the discharge port of this landwaste solid waste high temperature pyrolysis stove 26 is connected with the 4th feed bin 28 by landwaste material collection e Foerderanlage 27;
The hot air source 12 that this mud high temperature pyrolysis assembly comprises above-mentioned atomization high temperature pyrolysis tower 9 and is connected with atomization high temperature pyrolysis tower 9, this atomization high temperature pyrolysis tower 9 inside is provided with hot-air distributor, and this hot-air distributor is communicated with hot air source 12; The discharge port of this atomization high temperature pyrolysis tower 9 is collected e Foerderanlage 10 by material particles and is connected with the first feed bin 11;
This toxic and harmful process assembly comprises innoxious fine dust particles collecting conveyor structure, ultrafine dust particle waste gas treatment mechanism and above-mentioned separator 13; Wherein, this innoxious fine dust particles collecting conveyor structure comprises fine granular materials and collects e Foerderanlage 14 and collect with this fine granular materials the second feed bin 15 that e Foerderanlage 14 is connected; This ultrafine dust particle waste gas treatment mechanism comprises the secondary combustion chamber 16, quenching apparatus 17 and the dedusting mechanism that are communicated with successively, this dedusting mechanism comprises pulsed jet cloth filter 18 and the material recycle mechanism that is connected respectively with the discharge port of this pulsed jet cloth filter 18 and air outlet and active carbon filtering device 21, and this pulsed jet cloth filter 18 is also connected with slaked lime and gac jet apparatus 29, and the air outlet of this active carbon filtering device 21 is also connected with spray washing tower 23 by induced draft fan 22; Wherein, material recycle mechanism comprises ultra-fine grain material and collects e Foerderanlage 19 and collect with this ultra-fine grain material the 3rd feed bin 20 that e Foerderanlage 19 is connected;
Above-mentioned landwaste solid waste feed bin 6 is communicated with the opening for feed being atomized high temperature pyrolysis tower 9 with landwaste solid waste high temperature pyrolysis stove 26 respectively with the discharge port of pressure for slurry transfer mechanism 8, and this landwaste solid waste high temperature pyrolysis stove 26 is all communicated with the inlet mouth of above-mentioned separator 13 with the air outlet of atomization high temperature pyrolysis tower 9, and the discharge port of this separator 13 and air outlet are collected e Foerderanlage 14 with above-mentioned fine granular materials respectively and are communicated with secondary combustion chamber 16.
In the present embodiment, above-mentioned solid-liquid screening mechanism 5 comprises multiple eddy flow vibratory screening apparatus be arranged in parallel, and wherein, is equipped with valve between the opening for feed of each eddy flow vibratory screening apparatus and the discharge port of mud spiral conveyer 4.
Above-mentioned pressure comprises for slurry transfer mechanism 8 surge pump, pressure slurry pipeline, slurry gun and the high pressure mixed flow nozzle that are communicated with successively, and this slurry gun and high pressure mixed flow nozzle are positioned at the region, stage casing, inside of above-mentioned atomization high temperature pyrolysis tower 9; Wherein, thermal insulation layer and water-cooling jacket is provided with outside this slurry gun.
Above-mentioned atomization high temperature pyrolysis tower 9 is provided with gravity explosive door; In addition, above-mentioned separator 13 is efficient cyclone separator.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a drilling well solid waste harmless treatment process, is characterized in that, comprise the steps:
(a) mud granule screening and separating: landwaste mud is carried out solid-liquid screening and obtains landwaste solid waste coarse particles and sludge slurry, and it is medium pending for slurry transfer mechanism (8) described landwaste solid waste coarse particles and sludge slurry to be delivered to respectively landwaste solid waste feed bin (6) and pressure;
(b) landwaste solid waste coarse particles process: solid waste material (25) and described landwaste solid waste coarse particles are sent in landwaste solid waste high temperature pyrolysis stove (26) together and carries out high temperature pyrolysis process, and produce innoxious solid materials and the toxic harmful exhaust gas containing granule dust, and it is medium pending that the described toxic harmful exhaust gas containing granule dust is delivered to separator (13);
(c) sludge slurry high temperature pyrolysis: sludge slurry is become high pressure sludge slurry for slurry transfer mechanism (8) and is delivered in atomization high temperature pyrolysis tower (9) by described pressure, described high pressure sludge slurry becomes little droplet through high pressure mixed flow jet spread and carries out elder generation's reverse walking each other with high-temperature hot air, afterwards for merging the gas of following current campaign, Gu two-phase heat exchange, complete instantaneously and drying and high temperature pyrolysis are carried out to described sludge slurry and obtains innoxious coarse particles material and the toxic harmful exhaust gas containing dust, and it is medium pending that the described toxic harmful exhaust gas containing dust is delivered to described separator (13),
D () is containing the toxic harmful exhaust gas process of fine dust: described separator (13) carries out separating treatment to the toxic harmful exhaust gas containing granule dust obtained by step (b) and (c) respectively and the toxic harmful exhaust gas containing dust and obtains innoxious fine dust particles and the waste gas containing ultrafine dust particle, and the described waste gas containing ultrafine dust particle is delivered to secondary combustion chamber (16) with pending;
E () secondary high-temperature burns pyrolysis processing: described secondary combustion chamber (16) carries out secondary high-temperature to the waste gas containing ultrafine dust particle produced by step (d) and burns pyrolysis and obtain ultra tiny dust granules waste gas;
(f) atomizing chilling process: the ultra tiny dust granules waste gas obtained by step (e) is delivered to quenching apparatus (17) and carries out atomizing chilling process;
(g) ultra tiny dust granules off gas treatment: via the ultra tiny dust granules waste gas after the process of step (f) atomizing chilling successively through bag pulse dedusting, activated carbon filtration and spray carrying out washing treatment, will be discharged (24) after meeting environmental requirement.
2. drilling well solid waste harmless treatment process according to claim 1, is characterized in that, in above-mentioned steps (a), is transported in solid-liquid screening mechanism (5) by landwaste mud carries out solid-liquid screening by mud spiral conveyer (4).
3. drilling well solid waste harmless treatment process according to claim 1, it is characterized in that, in above-mentioned steps (g), the slaked lime remaining after bag pulse dedusting by described ultra tiny dust granules waste gas and gac are delivered in described secondary combustion chamber (16) and carry out secondary high-temperature burning pyrolysis processing.
4. the treatment system for any one drilling well solid waste harmless treatment process in claim 1 ~ 3, it is characterized in that, comprise mud and do not land for slurry assembly, cutting grain high temperature pyrolysis assembly, mud high temperature pyrolysis assembly and toxic and harmful process assembly;
Described mud does not land and supplies slurry assembly to comprise described mud spiral conveyer (4), solid-liquid screening mechanism (5), landwaste solid waste feed bin (6) and pressure for slurry transfer mechanism (8), and the discharge port of described mud spiral conveyer (4) is communicated with the opening for feed of described solid-liquid screening mechanism (5), and described landwaste solid waste feed bin (6) is communicated with the second discharge port with the first discharge port of described solid-liquid screening mechanism (5) respectively with the opening for feed of pressure for slurry transfer mechanism (8);
Described cutting grain high temperature pyrolysis assembly comprises described landwaste solid waste high temperature pyrolysis stove (26);
The hot air source (12) that described mud high temperature pyrolysis assembly comprises described atomization high temperature pyrolysis tower (9) and is connected with atomization high temperature pyrolysis tower (9);
Described toxic and harmful process assembly comprises innoxious fine dust particles collecting conveyor structure, ultrafine dust particle waste gas treatment mechanism and described separator (13);
Described landwaste solid waste feed bin (6) is communicated with the opening for feed being atomized high temperature pyrolysis tower (9) with described landwaste solid waste high temperature pyrolysis stove (26) respectively with the discharge port of pressure for slurry transfer mechanism (8), and described landwaste solid waste high temperature pyrolysis stove (26) is all communicated with the inlet mouth of described separator (13) with the air outlet of atomization high temperature pyrolysis tower (9), and the discharge port of described separator (13) and air outlet are communicated with ultrafine dust particle waste gas treatment mechanism with described innoxious fine dust particles collecting conveyor structure respectively.
5. drilling well solid waste innocuity disposal system according to claim 4, is characterized in that, the second discharge port of described solid-liquid screening mechanism (5) and pressure are provided with mud tank (7) between the opening for feed starching transfer mechanism (8).
6. drilling well solid waste innocuity disposal system according to claim 4, is characterized in that, described solid-liquid screening mechanism (5) comprises multiple eddy flow vibratory screening apparatus be arranged in parallel.
7. drilling well solid waste innocuity disposal system according to claim 4, it is characterized in that, described pressure comprises for slurry transfer mechanism (8) surge pump, pressure slurry pipeline, slurry gun and the high pressure mixed flow nozzle that are communicated with successively, and described slurry gun and high pressure mixed flow nozzle are positioned at the region, stage casing, inside of described atomization high temperature pyrolysis tower (9).
8. drilling well solid waste innocuity disposal system according to claim 4, is characterized in that, described atomization high temperature pyrolysis tower (9) inside is provided with hot-air distributor, and described hot-air distributor is communicated with hot air source (12).
9. drilling well solid waste innocuity disposal system according to claim 4, is characterized in that, described ultrafine dust particle waste gas treatment mechanism comprises the secondary combustion chamber (16), quenching apparatus (17) and the dedusting mechanism that are communicated with successively.
10. drilling well solid waste innocuity disposal system according to claim 9, it is characterized in that, described dedusting mechanism comprises pulsed jet cloth filter (18) and the material recycle mechanism that is connected respectively with the discharge port of described pulsed jet cloth filter (18) and air outlet and active carbon filtering device (21), and described pulsed jet cloth filter (18) is also connected with slaked lime and gac jet apparatus (29), and the air outlet of described active carbon filtering device (21) is also connected with spray washing tower (23).
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Application publication date: 20151007 Assignee: Beijing Zhong Rong Da Zheng Environmental Protection Engineering Technology Co., Ltd. Assignor: Lu Jun Contract record no.: 2018990000231 Denomination of invention: Well-drilling solid waste harmless treatment technology and system Granted publication date: 20160615 License type: Exclusive License Record date: 20180821 |