CN104722167A - Process unit for removing dust and recovering oil from pyrolysis high-temperature oil gas - Google Patents
Process unit for removing dust and recovering oil from pyrolysis high-temperature oil gas Download PDFInfo
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Abstract
The invention discloses a process unit for removing dust and recovering oil from pyrolysis high-temperature oil gas. The process unit comprises a spiral electric dust collector, a secondary-primary cyclone dust collection device which is provided with a high-temperature pyrolysis gas inlet and a Venturi dust collection device which is provided with a gas phase hole, a wash oil inlet and a purified pyrolysis gas outlet for discharging purified pyrolysis gas, wherein the spiral electric dust collector comprises insulating porcelains, an inclined cylinder and a spiral spring-shaped spiral barbed wire; a heat preservation and insulation layer, a spiral electric dust collector inlet and an electric dust collector collected dust outlet are arranged on the outer wall of the cylinder; the insulating porcelains are mounted at both the front and rear ends of the cylinder; the spiral barbed wire is arranged between the insulating porcelain; a purge gas inlet and an electric dust collection purified gas outlet are respectively formed in insulating porcelain mounting cavities at the front and rear ends; the spiral electric dust collector inlet is connected with a plurality of secondary cyclone purified as outlets of the secondary-primary cyclone dust collection device; and the electric dust collection purified gas outlet is communicated with the gas phase hole of the Venturi dust collection device. According to the process unit, the dust collection rate of the pyrolysis oil gas is up to 99.98% and the solid content of the recovered coal tar is less than 0.4%.
Description
Technical field
The invention belongs to Coal Chemical Industry, oil shale and biomass pyrolytic field, be specifically related to a kind of process unit of pyrolysis high-temperature oil gas dedusting recovered oil.
Background technology
The few oil of the rich coal of China, coal resources relative abundance, but most coal resources are directly as fuel power generation function at present; And on the other hand along with the quick growth of China's economy, fuel oil demand constantly increases, so domestic Duo Jia scientific research institutions and enterprise development fine coal (or oil shale) pyrolysis process for upgrading, and some processes device is carried out industrialization amplification.Before coal burning or gasification, propose the coal tar of high added value hydrogen-rich component, to comprehensive utilization coal resource, reduce nitrogen oxides of exhaust gas and sulfide emission, improve coal added value, and then the raw material sources tool that fuel oil is produced in increase is of great significance.But although the pulverized coal pyrolysis technique of domestic-developed is more, but the oil gas dustiness that all there is pyrolysis generation is at present large, during pyrolysis gas condensation, dust enters in the middle of profit, form water-in-oil type and float compound, oil, water, solid (dirt) are difficult to be separated, and can not be recycled by the high added value coal tar that pyrolysis produces and become greasy filth, easily cause the blocking etc. of equipment, pipeline, valve, can not long-period stable operation, constrain the development that pulverized coal pyrolysis extracts coal tar technique road.
Summary of the invention
For the deficiencies in the prior art and Problems existing, the invention provides a kind of process unit of pyrolysis high-temperature oil gas dedusting recovered oil, make pyrolysis oil gas dust removal efficiency up to 99.98%, reclaim the solid content < 0.4% of coal tar, meet the requirement of follow-up tar deep processing technology completely.
The present invention is achieved through the following technical solutions:
A process unit for pyrolysis high-temperature oil gas dedusting recovered oil, comprises spiral electric cleaner, the primary and secondary cyclone dust arrester of vent one's spleen with high-temperature hot entrance and multiple sub-cyclone clean gas outlet and with gas phase mouth, washing oil entrance, residual oil outlet and the shaped Venturi dedusting device of pyrolysis gas clean gas outlet;
Spiral electric cleaner comprises insulation porcelain, the spiral prickle wire of the cylindrical shell be obliquely installed and coil spring shape, cylinder body outer wall is provided with heat insulation layer, cylinder lateral wall is provided with the electric cleaner that the spiral electric cleaner entrance that tangentially enters for multiple sub-cyclone purified gas after the process of primary and secondary cyclone dust arrester and the dust granule for collecting discharge and collects dust outlet, cylindrical shell rear and front end is the sub-installation cavity of insulation porcelain, in the sub-installation cavity of insulation porcelain of rear and front end, insulation porcelain is all installed, spiral prickle wire is connected with insulation porcelain in the sub-installation cavity of its two ends insulation porcelain, the sub-installation cavity of insulation porcelain of rear and front end is respectively equipped with the electric precipitation clean gas outlet of sweep gas entrance and the discharge of power supply udst separation gas, spiral electric cleaner entrance is connected with the multiple sub-cyclone clean gas outlet of primary and secondary cyclone dust arrester, electric precipitation clean gas outlet is connected with the gas phase mouth of shaped Venturi dedusting device, the pyrolysis gas clean gas outlet of shaped Venturi dedusting device discharges pyrolysis gas purified gas.
Described shaped Venturi dedusting device comprises venturi scrubber, gs-oil separator and oil circulating pump, the electric precipitation clean gas outlet of described spiral electric cleaner is connected with the gas phase mouth of venturi scrubber, gas-liquid mixture outlet bottom venturi scrubber is connected with gs-oil separator, the oil gas of gs-oil separator enters confession washing oil and enters, the circulating washing oil outlet of gs-oil separator is connected with the liquid phase entrance of venturi scrubber after oil circulating pump, the dregs of fat outlet of discharging for the dregs of fat is provided with bottom gs-oil separator, pyrolysis gas purified gas is discharged from the pyrolysis gas clean gas outlet on gs-oil separator top.
Described primary and secondary cyclone dust arrester comprises the mother-qi that inwall is provided with Wear-resistant heat insulation lining and revolves cylindrical shell, mother-qi revolves inner barrel and is provided with and multiplely carries out series, parallel or series-parallel sub-cyclone separator and sub-cyclone flutter valve, mother-qi revolves cylindrical shell top and is provided with set bobbin carriage, mother-qi revolves cylinder body outer wall offers to vent one's spleen the entrance entered for high-temperature hot, multiple sub-cyclone separator is all communicated with the multiple sub-cyclone purified gas entrance of set bobbin carriage, and the set outlet of bobbin carriage is connected with the spiral electric cleaner entrance of spiral electric cleaner.
It is that tapered cyclone collects dust accommodation powder storehouse that described mother-qi revolves cylindrical shell bottom.
Mother-qi revolve inner barrel be provided with more than three or three carry out series, parallel or series-parallel sub-cyclone separator.
Described sub-cyclone separator adopts stainless steel to make, inner spray Tu carbine abrasion-proof material.
Spiral prickle wire two ends are provided with hook, and spiral prickle wire two ends hook is connected with insulation porcelain at its two ends.
The shape of cylindrical shell is cylindrical shape, and spiral prickle wire adopts high nickel and stainless steel to make.
Cylindrical shell inclination 15 degree of settings.
Compared with prior art, the present invention has following useful technique effect:
The process unit of pyrolysis high-temperature oil gas dedusting recovered oil provided by the invention, by arranging primary and secondary cyclone dust arrester, the second level is spiral electric cleaner and shaped Venturi dedusting device carries out dust removal process, the problem of pulverized coal pyrolysis dedusting and tar recovery difficulty can be solved, through the pyrolysis oil gas dust removal efficiency of apparatus of the present invention process up to 99.98%, reclaim the solid content < 0.4% of coal tar, meet the requirement of follow-up tar deep processing technology completely.
The mother-qi of primary and secondary cyclone dust arrester of the present invention revolves in cylindrical shell and keeps multiple sub-cyclone separator, mother-qi revolves cylindrical shell mainly as pre-dedusting, trap the dust of more than 15 microns, efficiency of dust collection can reach more than 96%, simultaneously utilize again medium own temperature to be that multiple sub-cyclone separator is incubated, and the extension that mother-qi revolves cylindrical shell bottom cone have again cyclone concurrently collects the effect that powder storehouse 6 holds powder storehouse.Mother-qi revolves cylinder inboard wall cast Wear-resistant heat insulation lining, plays the effect of self insulation.The multiple sub-cyclone separator that mother-qi revolves inner barrel is undertaken by the sub-cyclone of more than 3 or 3 that series, parallel or connection in series-parallel form, and its Main Function is the particle between trapping 5-15 micron, and efficiency of dust collection can reach more than 90%.Sub-cyclone separator is the dust arrester that grit is separated by the centrifugal force utilizing swirling eddy to produce from dust-contained airflow, all adopts stainless steel, internal spray carbine abrasion-proof material.It is simple that it has structure, and small volume, without the need to special auxiliary device, cost is lower. the advantages such as resistance is moderate, movement-less part in device, easy to operate.
Shortcoming due to sub-cyclone is the limited efficacy that trap particles is less than 5 microns, for improving the dust catching rate being less than less than 5 microns.Purified gas after primary and secondary cyclone dust arrester still needs again to carry out two-stage dust removal.
Two-stage dust removal adopts spiral electric cleaner, traditional electric cleaner is square casing, and there is more angle-style Welding Structure, or can not bear 500 ~ 700 DEG C of hot environments, easily there is inequality of being heated, cause housing high temperature deformation, weld stress cracking.Spiral electric cleaner of the present invention adopts round barrel designs, makes it can freely expand with heat and contract with cold at high operating temperatures, and it is outside that insulation is placed on spiral electric cleaner, makes the cylindrical shell of spiral electric cleaner double as anode, and without the need to hanging positive plate in addition.Spiral electric cleaner device cylindrical shell tangential admission structure, makes air-flow flow at cylindrical shell inside spin.Negative electrode adopts spiral prickle wire, and this spiral prickle wire makes with high nickel and stainless steel, and turn to coil spring shape, hook-type and insulation porcelain sub-connection are made in two ends.After only spiral prickle wire need being stretched during installation, two ends are hooked on insulation porcelain, rely on the tensile force of spiral prickle wire self to limit the transverse shifting of spiral prickle wire.Rapping spiral prickle wire can produce shake, because the spiral prickle wire of spring structure can back and forth shrink, shake can continue a break time, and therefore vibrating effect is better than the electric dust-removing equipment of ordinary construction, and then decrease the frequency of rapping spiral prickle wire, decrease the generation of reentrainment of dust.Spiral prickle wire can produce strong corona discharge as negative electrode, more uniform electric current can be produced with between positive plate, make pole plate region of gathering dust large and be evenly distributed, so efficiency of dust collection is up to 98%, high temperature, high flow rate, high specific resistance can be applicable to, tool security performance is high, vibration dust-cleaning is effective, structure is simple, volume is little, efficiency is high, cheap, the features such as easy are installed.Many for solving conventional high-temperature electric cleaner insulation porcelain; the short circuit of insulation porcelain subproduct dirt; the negative electrode prickle line end of spiral electric cleaner of the present invention only has two; connected by hook; employing purge gas is protected, and this sweep gas can be that hot nitrogen or hot carbon dioxide gas etc. are non-containing oxygen gas, has former feature widely; make insulation porcelain be in isolation with processing medium, and then solve the problem of current electric cleaner insulation porcelain subproduct dirt short circuit.And this electric cleaner can according to the dust-laden different in kind of different medium, the electric cleaner of the draw ratio that unrestricted choice is different, or make its multiple spiral electric cleaner in parallel, there is unstripped gas strong adaptability, there is no the feature that temperature, tolerance limit.The dust stickiness produced due to pulverized coal pyrolysis is larger, the not smooth problem of device ash discharge is removed for solving traditional electrical, the cylindrical shell of electricity except device tilts 15 degree by spiral electric cleaner of the present invention, and the dust granule of collection is delivered to bottom spiral electric cleaner and discharged by the airflow thrust relying on spiral to advance.
The present invention carries out third level dedusting at condensation recovery stage, because its separation difficulty of water-in-oil emulsion easily appears in oil, water, solid (dirt) three-phase.Again because produce water content in pulverized coal pyrolysis process to be about 2 ~ 4% (in coal) left and right, can in pyrolysis high-temperature oil gas temperature-fall period, before water vapour does not have condensation, utilize dead oil between 180 ~ 360 DEG C as washing oil, absorbed by washing oil by the dust granules of 1 micron and sub-micron, its efficiency of dust collection is up to 90%.Make its condensed liquid phase substance by traditional handicraft oil, water, solid (dirt) three phase separation, be reduced to oil, solid (dirt) two-phase laminated flow.Third level dedusting have employed known shaped Venturi dedusting device, and its purification process is divided into atomization, cohesion, Oil-gas Separation three step.The advantage of shaped Venturi dedusting device is: efficiency of dust collection is high, can eliminate the grit of less than 1 micron, and structure is simple to operation.
Accompanying drawing explanation
Fig. 1 is the process unit structural representation of pyrolysis high-temperature oil gas dedusting recovered oil provided by the invention.
Fig. 2 is spiral electric cleaner structural representation in the process unit of pyrolysis high-temperature oil gas dedusting recovered oil provided by the invention;
Fig. 3 is the top view of spiral electric cleaner in the process unit of pyrolysis high-temperature oil gas dedusting recovered oil provided by the invention.
Wherein, 1 vents one's spleen for high-temperature hot, 2 revolve cylindrical shell for mother-qi, 3 revolve purified gas for mother-qi, 4 is sub-cyclone separator, 5 is sub-cyclone flutter valve, 6 is cyclone collection dust, 7 is set bobbin carriage, 8 is multiple sub-cyclone purified gas, 9 is spiral electric cleaner, 10 is electric precipitation purified gas, 11 is electric precipitation collection dust, 12 is venturi scrubber, 13 is gas-liquid mixture, 14 is gs-oil separator, 15 is dust-laden washing oil, 16 is washing oil, 17 is residual oil, 18 is oil circulating pump, 19 is circulating washing oil, 20 is pyrolysis gas purified gas, 9-1 is spiral electric cleaner entrance, 9-2 is that dust outlet collected by electric cleaner, 9-3 is insulation porcelain, 9-4 is electric precipitation clean gas outlet, 9-5 is spiral prickle wire, 9-6 is cylindrical shell, 9-7 is sweep gas entrance, 9-8 is insulation porcelain.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
See Fig. 1 to Fig. 3, a process unit for pyrolysis high-temperature oil gas dedusting recovered oil, comprises spiral electric cleaner 9, the primary and secondary cyclone dust arrester of vent one's spleen with high-temperature hot entrance and multiple sub-cyclone clean gas outlet and with gas phase mouth, washing oil entrance, residual oil outlet and the shaped Venturi dedusting device of pyrolysis gas clean gas outlet, spiral electric cleaner 9 comprises the sub-9-3 of insulation porcelain, tilt the cylindrical drum 9-6 of 15 degree of settings and the spiral prickle wire 9-5 of coil spring shape, spiral prickle wire 9-5 adopts high nickel and stainless steel to make, cylindrical shell 9-6 outer wall is provided with heat insulation layer, cylindrical shell 9-6 sidewall is provided with the electric cleaner that the spiral electric cleaner entrance 9-1 that tangentially enters for multiple sub-cyclone purified gas after the process of primary and secondary cyclone dust arrester and the dust granule for collecting discharge and collects dust outlet 9-2, cylindrical shell 9-6 rear and front end is the sub-installation cavity of insulation porcelain, in the sub-installation cavity of insulation porcelain of rear and front end, the sub-9-3 of insulation porcelain is all installed, spiral prickle wire 9-5 two ends are provided with hook, spiral prickle wire 9-5 two ends hook is connected with the sub-9-3 of the insulation porcelain at its two ends, the sub-installation cavity of insulation porcelain of rear and front end is respectively equipped with the electric precipitation clean gas outlet 9-4 of sweep gas entrance 9-7 and the discharge of power supply udst separation gas, spiral electric cleaner entrance 9-1 is connected with the multiple sub-cyclone clean gas outlet of primary and secondary cyclone dust arrester, electric precipitation clean gas outlet 9-4 is connected with the gas phase mouth of shaped Venturi dedusting device, the pyrolysis gas clean gas outlet of shaped Venturi dedusting device discharges pyrolysis gas purified gas.
Described shaped Venturi dedusting device comprises venturi scrubber 12, gs-oil separator 14 and oil circulating pump 18, the electric precipitation clean gas outlet 9-4 of described spiral electric cleaner 9 is connected with the gas phase mouth of venturi scrubber 12, gas-liquid mixture 13 bottom venturi scrubber 12 exports and is connected with gs-oil separator 14, the oil gas of gs-oil separator 14 enters confession washing oil 16 and enters, the circulating washing oil 19 of gs-oil separator 14 exports and is connected with the liquid phase entrance of venturi scrubber 12 after oil circulating pump 18, the dregs of fat outlet of discharging for the dregs of fat 17 is provided with bottom gs-oil separator 14, pyrolysis gas purified gas 20 is discharged from the pyrolysis gas clean gas outlet on gs-oil separator 14 top.
Described primary and secondary cyclone dust arrester comprises the mother-qi that inwall is provided with Wear-resistant heat insulation lining and revolves cylindrical shell 2, mother-qi revolves cylindrical shell 2 inside and is provided with multiple series connection, in parallel or series-parallel sub-cyclone separator 4 and sub-cyclone flutter valve 5, mother-qi revolves cylindrical shell 2 top and is provided with set bobbin carriage 7, mother-qi revolves cylindrical shell 2 outer wall offers to vent one's spleen 1 entrance entered for high-temperature hot, multiple sub-cyclone separator 4 is all communicated with multiple sub-cyclone purified gas 8 entrance of set bobbin carriage 7, the set outlet of bobbin carriage 7 is connected with the spiral electric cleaner entrance 9-1 of spiral electric cleaner 9, it is that tapered cyclone collection dust 6 holds powder storehouse that described mother-qi revolves cylindrical shell 2 bottom, described sub-cyclone separator 4 adopts stainless steel to make, inner spray Tu carbine abrasion-proof material.
Preferably, mother-qi revolve cylindrical shell 2 inside be provided with more than three or three carry out series, parallel or series-parallel sub-cyclone separator 4.
Processing step of the present invention
The processing step of pyrolysis high-temperature oil gas dedusting recovered oil of the present invention contains:
1, known pyrolysis installation 550 ~ 750 DEG C of high-temperature hot out vent one's spleen 1, and revolve cylindrical shell 2 from the mother-qi of primary and secondary cyclone dust arrester and tangentially enter, after trapping more than 15 microns dust granules, the mother-qi after being purified revolves purified gas 3.Because mother-qi revolves the outer wall thermolysis of cylindrical shell 2, the temperature that mother-qi revolves purified gas 3 is reduced to 520 ~ 720 DEG C.The dust granules trapped drop to mother-qi revolve the extension of cylindrical shell 2 bottom cone cyclone collect powder storehouse 6 hold powder warehousing storage after cyclone collect dust 6 discharged by pipeline.
2, temperature 520 ~ 720 DEG C of mother-qis revolve purified gas 3 and directly enter interior plant mother-qi and revolve in the sub-cyclone separator 4 of cylindrical shell 2 inside, and after the particle between trapping 5-15 micron, the multiple sub-cyclone purified gas 8 of temperature 510 ~ 710 DEG C is sent after set bobbin carriage 7 converges.The dust granules trapped through sub-cyclone flutter valve 5 drop to mother-qi revolve cylindrical shell 2 bore extension store.
3, the multiple sub-cyclone purified gas 8 of temperature 520 ~ 720 DEG C, is tangentially entered by the cylindrical shell of spiral electric cleaner 9, and air-flow, in the cylinder inboard wall helical flow of spiral electric cleaner 9, after trapping the particle between 1 ~ 5 micron, obtains electric precipitation purified gas 10.Due to the outer cylinder body thermolysis of spiral electric cleaner 9, the temperature of electric precipitation purified gas 10 is reduced to 490 ~ 690 DEG C.Trapping dust granules richness amasss on the inwall of spiral electric cleaner 9, and under the effect of flow spiral motive force, deliver to the bottom of spiral electric cleaner 9, electric precipitation is collected dust 11 and discharged by pipeline.
4,490 ~ 690 DEG C of electric precipitation purified gas 10 enter from venturi scrubber 12 gas phase mouth, washing oil 16 is forced into after 0.8MPa (gauge pressure) through oil circulating pump and enters venturi scrubber 12 liquid phase entrance, gas-liquid mixture 13 enters gs-oil separator 14 by bottom venturi scrubber 12, in gs-oil separator 14, carry out oil gas inertial separation.Pyrolysis gas 20 after purification, temperature is down to 380 ~ 580 DEG C, after the row of gs-oil separator top, adopts the condensation process known to reclaim tar.Dust-laden washing oil 15 is through after sedimentation separation, and residual oil 17 is discharged by bottom, adopts the residual oil processing method known.The circulating washing oil 19 on gs-oil separator 14 upper strata uses through oil circulating pump 18 supercharging Posterior circle.Washing oil 16 is mended outward when gs-oil separator 14 liquid level declines.
The present invention is directed to pulverized coal pyrolysis gas and produce recycling technical process feature, be that the dust in pyrolysis high-temperature oil gas is carried out classification, stage by stage dedusting, mainly include three grades two stages.The first order is primary and secondary cyclone dust arrester, and the second level is spiral electric cleaner, and the third level is shaped Venturi dedusting device; Two stages are: high-temperature dust removal stage (comprising the first order and the second level) and condensation recovery stage (comprising the third level).Through the pyrolysis oil gas dust removal efficiency of apparatus of the present invention process up to 99.98%, reclaim the solid content < 0.4% of coal tar, meet the requirement of follow-up tar deep processing technology completely.
The mother-qi of primary and secondary cyclone dust arrester of the present invention revolves in cylindrical shell and keeps multiple sub-cyclone separator, mother-qi revolves cylindrical shell mainly as pre-dedusting, trap the dust of more than 15 microns, efficiency of dust collection can reach more than 96%, simultaneously utilize again medium own temperature to be that multiple sub-cyclone separator is incubated, and the extension that mother-qi revolves cylindrical shell bottom cone have again cyclone concurrently collects the effect that powder storehouse 6 holds powder storehouse.Mother-qi revolves cylinder inboard wall cast Wear-resistant heat insulation lining, plays the effect of self insulation.The multiple sub-cyclone separator that mother-qi revolves inner barrel is undertaken by the sub-cyclone of more than 3 or 3 that series, parallel or connection in series-parallel form, and its Main Function is the particle between trapping 5-15 micron, and efficiency of dust collection can reach more than 90%.Sub-cyclone separator is the dust arrester that grit is separated by the centrifugal force utilizing swirling eddy to produce from dust-contained airflow, all adopts stainless steel, internal spray carbine abrasion-proof material.It is simple that it has structure, and small volume, without the need to special auxiliary device, cost is lower. the advantages such as resistance is moderate, movement-less part in device, easy to operate.
Shortcoming due to sub-cyclone is the limited efficacy that trap particles is less than 5 microns, for improving the dust catching rate being less than less than 5 microns.Purified gas after primary and secondary cyclone dust arrester still needs again to carry out two-stage dust removal.
Two-stage dust removal adopts spiral electric cleaner, traditional electric cleaner is square casing, and there is more angle-style Welding Structure, or can not bear 500 ~ 700 DEG C of hot environments, easily there is inequality of being heated, cause housing high temperature deformation, weld stress cracking.Spiral electric cleaner of the present invention adopts round barrel designs, makes it can freely expand with heat and contract with cold at high operating temperatures, and it is outside that insulation is placed on spiral electric cleaner, makes the cylindrical shell of spiral electric cleaner double as anode, and without the need to hanging positive plate in addition.Spiral electric cleaner device cylindrical shell tangential admission structure, makes air-flow flow at cylindrical shell inside spin.Negative electrode adopts spiral prickle wire, and this spiral prickle wire makes with high nickel and stainless steel, and turn to coil spring shape, hook-type and insulation porcelain sub-connection are made in two ends.After only spiral prickle wire need being stretched during installation, two ends are hooked on insulation porcelain, rely on the tensile force of spiral prickle wire self to limit the transverse shifting of spiral prickle wire.Rapping spiral prickle wire can produce shake, because the spiral prickle wire of spring structure can back and forth shrink, shake can continue a break time, and therefore vibrating effect is better than the electric dust-removing equipment of ordinary construction, and then decrease the frequency of rapping spiral prickle wire, decrease the generation of reentrainment of dust.Spiral prickle wire can produce strong corona discharge as negative electrode, more uniform electric current can be produced with between positive plate, make pole plate region of gathering dust large and be evenly distributed, so efficiency of dust collection is up to 98%, high temperature, high flow rate, high specific resistance can be applicable to, tool security performance is high, vibration dust-cleaning is effective, structure is simple, volume is little, efficiency is high, cheap, the features such as easy are installed.Many for solving conventional high-temperature electric cleaner insulation porcelain; the short circuit of insulation porcelain subproduct dirt; the negative electrode prickle line end of spiral electric cleaner of the present invention only has two; connected by hook; employing purge gas is protected, and this sweep gas can be that hot nitrogen or hot carbon dioxide gas etc. are non-containing oxygen gas, has former feature widely; make insulation porcelain be in isolation with processing medium, and then solve the problem of current electric cleaner insulation porcelain subproduct dirt short circuit.And this electric cleaner can according to the dust-laden different in kind of different medium, the electric cleaner of the draw ratio that unrestricted choice is different, or make its multiple spiral electric cleaner in parallel, there is unstripped gas strong adaptability, there is no the feature that temperature, tolerance limit.The dust stickiness produced due to pulverized coal pyrolysis is larger, the not smooth problem of device ash discharge is removed for solving traditional electrical, the cylindrical shell of electricity except device tilts 15 degree by spiral electric cleaner of the present invention, and the dust granule of collection is delivered to bottom spiral electric cleaner and discharged by the airflow thrust relying on spiral to advance.
The present invention carries out third level dedusting at condensation recovery stage, because its separation difficulty of water-in-oil emulsion easily appears in oil, water, solid (dirt) three-phase.Again because produce water content in pulverized coal pyrolysis process to be about 2 ~ 4% (in coal) left and right, can in pyrolysis high-temperature oil gas temperature-fall period, before water vapour does not have condensation, utilize dead oil between 180 ~ 360 DEG C as washing oil, absorbed by washing oil by the dust granules of 1 micron and sub-micron, its efficiency of dust collection is up to 90%.Make its condensed liquid phase substance by traditional handicraft oil, water, solid (dirt) three phase separation, be reduced to oil, solid (dirt) two-phase laminated flow.Third level dedusting have employed known shaped Venturi dedusting device, and its purification process is divided into atomization, cohesion, Oil-gas Separation three step.The advantage of shaped Venturi dedusting device is: efficiency of dust collection is high, can eliminate the grit of less than 1 micron, and structure is simple to operation.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. the process unit of a pyrolysis high-temperature oil gas dedusting recovered oil, it is characterized in that, comprise spiral electric cleaner (9), the primary and secondary cyclone dust arrester of vent one's spleen with high-temperature hot entrance and multiple sub-cyclone clean gas outlet and the shaped Venturi dedusting device with gas phase mouth, washing oil entrance, residual oil outlet and pyrolysis gas clean gas outlet;
Spiral electric cleaner (9) comprises insulation porcelain (9-3), the cylindrical shell (9-6) be obliquely installed and the spiral prickle wire (9-5) of coil spring shape, cylindrical shell (9-6) outer wall is provided with heat insulation layer, cylindrical shell (9-6) sidewall is provided with the electric cleaner that the spiral electric cleaner entrance (9-1) that tangentially enters for multiple sub-cyclone purified gas after the process of primary and secondary cyclone dust arrester and the dust granule for collecting discharge and collects dust outlet (9-2), cylindrical shell (9-6) rear and front end is the sub-installation cavity of insulation porcelain, in the sub-installation cavity of insulation porcelain of rear and front end, insulation porcelain (9-3) is all installed, spiral prickle wire (9-5) is connected with insulation porcelain (9-3) in the sub-installation cavity of its two ends insulation porcelain, the sub-installation cavity of insulation porcelain of rear and front end is respectively equipped with the electric precipitation clean gas outlet (9-4) of sweep gas entrance (9-7) and the discharge of power supply udst separation gas, spiral electric cleaner entrance (9-1) is connected with the multiple sub-cyclone clean gas outlet of primary and secondary cyclone dust arrester, electric precipitation clean gas outlet (9-4) is connected with the gas phase mouth of shaped Venturi dedusting device, the pyrolysis gas clean gas outlet of shaped Venturi dedusting device discharges pyrolysis gas purified gas.
2. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 1, it is characterized in that, described shaped Venturi dedusting device comprises venturi scrubber (12), gs-oil separator (14) and oil circulating pump (18), the electric precipitation clean gas outlet (9-4) of described spiral electric cleaner (9) is connected with the gas phase mouth of venturi scrubber (12), gas-liquid mixture (13) outlet of venturi scrubber (12) bottom is connected with gs-oil separator (14), the oil gas of gs-oil separator (14) enters confession washing oil (16) and enters, circulating washing oil (19) outlet of gs-oil separator (14) is connected with the liquid phase entrance of venturi scrubber (12) after oil circulating pump (18), gs-oil separator (14) bottom is provided with the dregs of fat outlet of discharging for the dregs of fat (17), pyrolysis gas purified gas (20) is discharged from the pyrolysis gas clean gas outlet on gs-oil separator (14) top.
3. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 1 and 2, it is characterized in that, described primary and secondary cyclone dust arrester comprises the mother-qi that inwall is provided with Wear-resistant heat insulation lining and revolves cylindrical shell (2), mother-qi revolves cylindrical shell (2) inside and is provided with multiple series connection, in parallel or series-parallel sub-cyclone separator (4) and sub-cyclone flutter valve (5), mother-qi revolves cylindrical shell (2) top and is provided with set bobbin carriage (7), mother-qi revolves cylindrical shell (2) outer wall offers to vent one's spleen the entrance that (1) enter for high-temperature hot, multiple sub-cyclone separator (4) is all communicated with multiple sub-cyclone purified gas (8) entrance of set bobbin carriage (7), the outlet of set bobbin carriage (7) is connected with the spiral electric cleaner entrance (9-1) of spiral electric cleaner (9).
4. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 3, is characterized in that, it is that tapered cyclone collects dust (6) accommodation powder storehouse that described mother-qi revolves cylindrical shell (2) bottom.
5. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 3, it is characterized in that, mother-qi revolve cylindrical shell (2) inside be provided with more than three or three carry out series, parallel or series-parallel sub-cyclone separator (4).
6. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 3, is characterized in that, described sub-cyclone separator (4) adopts stainless steel to make, inner spray Tu carbine abrasion-proof material.
7. the process unit of the pyrolysis high-temperature oil gas dedusting recovered oil according to claim 1 or 2 or 3, it is characterized in that, spiral prickle wire (9-5) two ends are provided with hook, and spiral prickle wire (9-5) two ends hook is connected with insulation porcelain (9-3) at its two ends.
8. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 1, is characterized in that, the shape of cylindrical shell (9-6) is cylindrical shape, and spiral prickle wire (9-5) adopts high nickel and stainless steel to make.
9. the process unit of pyrolysis high-temperature oil gas dedusting recovered oil according to claim 1, is characterized in that, cylindrical shell (9-6) tilts 15 degree of settings.
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514803A (en) * | 2018-06-27 | 2018-09-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of high temperature oil water vapour dust-extraction unit and application method |
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| CN2250815Y (en) * | 1995-10-20 | 1997-04-02 | 武汉冶金科技大学 | Efficient composite multi-pipe cyclone collector |
| JP2007152053A (en) * | 2005-12-05 | 2007-06-21 | Eibun Amamiya | Electrostatic generation dust collecting apparatus for electrostatic vacuum cleaner |
| CN102489099A (en) * | 2011-11-22 | 2012-06-13 | 北京星和众工设备技术股份有限公司 | Deduster |
| CN103252146A (en) * | 2013-05-02 | 2013-08-21 | 洛阳理工学院 | Vertical type electric dust collector integrated with gravity and cyclone dust collection |
| CN204710017U (en) * | 2015-03-25 | 2015-10-21 | 陕西美斯林能源科技研究院 | A kind of process unit of pyrolysis high-temperature oil gas dedusting recovered oil |
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| CN2250815Y (en) * | 1995-10-20 | 1997-04-02 | 武汉冶金科技大学 | Efficient composite multi-pipe cyclone collector |
| JP2007152053A (en) * | 2005-12-05 | 2007-06-21 | Eibun Amamiya | Electrostatic generation dust collecting apparatus for electrostatic vacuum cleaner |
| CN102489099A (en) * | 2011-11-22 | 2012-06-13 | 北京星和众工设备技术股份有限公司 | Deduster |
| CN103252146A (en) * | 2013-05-02 | 2013-08-21 | 洛阳理工学院 | Vertical type electric dust collector integrated with gravity and cyclone dust collection |
| CN204710017U (en) * | 2015-03-25 | 2015-10-21 | 陕西美斯林能源科技研究院 | A kind of process unit of pyrolysis high-temperature oil gas dedusting recovered oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108514803A (en) * | 2018-06-27 | 2018-09-11 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of high temperature oil water vapour dust-extraction unit and application method |
| CN108514803B (en) * | 2018-06-27 | 2024-01-23 | 中国石油天然气集团有限公司 | High-temperature oil-water steam dust removal device and use method |
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| CN104722167B (en) | 2016-08-17 |
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