CN1072695C - Process flow and apparatus for direct production of dry carbon black from gasificating water washing carbon black water by separating - Google Patents

Abstract

The present invention relates to a flow path and a device for directly separating and recovering concentrated carbon black production pulp from gasification water washing carbon black water for dry carbon black production. The present invention is characterized in that an oil extraction step is omitted, and a liquid level spraying foam method is adopted; a small quantity of oil is added into carbon black water; total separation efficiency reaches 96.4 to 97.1%, and the separated carbon black water purification degree is reduced to 800 to 270 ppM through four continuous stages of spraying separation, so the separation core return flow path is greatly simplified, the investment and the energy consumption are greatly reduced, and various defects of carbon black circulation and recovery for gas preparation are thoroughly eliminated. Simultaneously, the present invention realizes the due value and the conspicuous economical benefit of carbon black products.

Description

A kind of directly separation of produced carbon black processing method and device from gasification washing sooty water

The present invention relates to a kind of solid, liquid separation method of suspension, particularly relate to a kind of directly separation of produced carbon black processing method and device from gasification washing sooty water.

Open (publication number: CN1068275A), it summarized the production application of the simple and direct isolation of purified of the spray foam formula of copper sulfide precipitation and oil content dirt in the cuprammonia on January 27th, 1993 for another application of this contriver.Its separate mode and flow process are: the bypass segment suspension that does not add any tensio-active agent is drawn, through " once spraying repeatedly round-robin isolation of purified flow process ".The present invention then relates to add the Separation and Recovery of a large amount of by product carbons of production system of tensio-active agent; Its separate mode and flow process then are: sooty water adds low quantity of surfactant after " repeatedly (level) sprays, disposable thorough isolation of purified flow process ".This flow process also is " liquid level eductor foaming process " general general and important flow process.We know: the essence of " liquid level eductor foaming process " is " spray foam ", it is to press the gas-entrained fluid mechanics principle of suspension high velocity liquid stream itself by band, when the liquid of liquid level is skimmed in the gas enclosure high-speed jet institute's Pneumatic type foam that produces can be with suspension in solid particulate and oil content dirt moment is transferred in the liquid level foam in the lump, again foam is removed, solid to reach, the isolating purpose of liquid, and the moment transfer efficiency of this disposable jet is about about 70%, therefore just can reach the suspension separating efficiency through several times after (level) injection continuously and reach 95-97% and the purpose of final purification.And sooty water is because its surface tension is big, surfactivity is poor, so must add low quantity of surfactant, just can make " liquid level eductor foaming process " to be applied to that the Separation and Recovery carbon black becomes feasible from sooty water, whether feasible this be again " liquid level eductor foaming process " important prerequisite of solution surface physical property, therefore can put it briefly: the liquid level eductor foaming process is gas-entrained principles of fluid mechanics and the suspension surface physical property bonded product of liquid stream flow at high speed.The separation efficiency of this spray foam is flow velocity, the flow pattern with suspension, suspension surface physical activity, and fluid temperature has substantial connection, thereby its mode of action or and mechanism be comparatively unique.

In the time of residual oil partial oxidation production of raw-material gas for synthetic ammonia, the inevitable a small amount of carbon black (1-5%) that in unstripped gas, generates, this sooty specific surface area is big, and particle is very thin, and the carbon black of removing in the gasification gas with traditional separation method is quite difficult.Industrial general using sooty wetting ability and lipophilicity and correspondingly take washing and oil extraction to remove and the Separation and Recovery carbon black.Just the main flow process of this by product carbon of Separation and Recovery has three kinds at present: the one, and our factory is with two step of the washing petroleum naphtha extraction procedure of the Texaco (U.S.) of Japan's introduction; The 2nd, Xie Er " parrot coal ball " flow process of being introduced by Germany is changed in Shandong two; The 3rd, the washing of the medium-sized factory of China, residual oil extraction or the direct extraction procedure of gasification gas residual oil, in these three kinds of flow processs, very successful with Texaco's flow process, it not only separates thoroughly, reliable and sealing and circulating reclaims, and is also very little to the pollution of environment, and this is a separation process preferably at present., this flow process complexity, investment big (about 3,400 ten thousand yuan), the circulation stripping and the condensation of petroleum naphtha are all bigger, and the clean consumption of petroleum naphtha is also bigger, so the energy consumption of separation process also is very high.Next is that Xie Er " parrot coal ball " flow process then can't normally not moved because of itself passing a test, and is just exploring new recovery technology at present, improves recycling carbon black production; As for the direct extraction procedure of domestic medium-sized residual oil, although basic simple and feasible, the fairly obvious and anxious To be improved of its existing problems improves.Generally speaking three kinds of flow processs all are that circulation recovery carbon black is transferred in the raw material residual oil, return vapourizing furnace again as system gas raw material, recycle and carbon black is made product, then all consider.But this residual oil partial oxidation by product carbon, studying in one's power through domestic carbon black, the check analysis of rubber item factory proves, its main characteristic (such as iodine absorption value and oil-absorption(number)) all belongs to excellent, similar substantially to the super abrasion resistant carbon black performance of oil oven method production, this by product carbon should be used as single product recycling (or modification processing), with the using value that realizes that it is higher, be save energy also simultaneously, economize on oil and contribute.Certainly, dense charcoal slurry and the residual oil combination treatment that also spray foam can be separated are returned gasifier system gas again or are directly used in boiler oil, but these very unwise moves of just doing something against one's will.Special residual oil directly circulates and reclaims system gas, just accumulation because carbon black ash and heavy metal constantly circulate, brought serious harm for the gasification production technique and the vapourizing furnace cycle of operation, so that chilled water can add and is forced to stop and handles, and the scarfing cinder stop frequency also increases at the bottom of making vapourizing furnace, especially heavy metal nickel, the accumulation of vanadium is very crucial to the etch and the damage of refractory brick, be because grey water loop temperature higher (about 100 ℃) in addition, so that frequent cavitation damage of grey water cycle high-pressure pump (4113-P5 pump) and frequent maintenance, these also can not be ignored quite greatly producing potential destruction and financial loss.Facts have proved the basic reason slag parrot coal slurry circulation recovery just of these problems of generation itself.

The objective of the invention is to cut down the oil extraction in above-mentioned three kinds of flow processs, adopt the level Four of " liquid level eductor foaming process " to spray flow process, directly the Separation and Recovery carbon black becomes dense charcoal slurry and further produces the carbon black product from gasification washing sooty water, thereby simplify carbon black Separation and Recovery flow process greatly, reduced the investment and the energy consumption of Separation and Recovery significantly.The speed and the efficient of Separation and Recovery have been improved simultaneously.Filter press technique can't be dreamed of by the Separation and Recovery sooty from sooty water, become practicable reality by this method of employing.Also realize simultaneously and thoroughly eliminated carbon black looping back the time receiving and since carbon black and heavy metal accumulation the having a strong impact on of the gasifying process that brings and production run cycle.

Technical scheme of the present invention is such: Quench sooty water (about 261 ℃ of the about 7.8MPa temperature of pressure of coming out from texaco gasification, contain the about 0.5-0.7% of carbon black concentration, about 100 cubic metres/hour of flow) enters carbon black first interchanger (1) continuously, second interchanger (2) is cooled to 50-60 ℃ with the cold buck heat exchange that buck reflux pump (19) is sent here, enter again and speed to put the multiple gases that device (4) is dissolved in the sooty water under with high pressure and speed to release through energy recycle device (3) 0.7MPa that reduces pressure, put separator (5) through speeding and tell and go boiler to make fuel after carrying moisture content secretly in the gas or reduce internal heat torch emptying.The sooty water of speeding to release enters in the coarse filter (6) sooty water coarse grain foreign material is filtered, in order to avoid plug nozzle, filter the back and add the surfactivity oil of sending here by petrol-feed pump (26), after mixing, static mixer (7) cause strong turbulence to stir through differential pressure valve with the pressure drop of the 0.2MPa left and right sides again, after making sooty water and a small amount of surfactivity oil thorough mixing, (the groove structure is seen Fig. 3 to go one-level spray foam separator tank (8) to carry out the one-level injection of separation, 4,5), spraying on the liquid level of the place ahead immediately, produce and assemble a large amount of foams, scrape with the frame scraper plate [9] of slow rotation and to carry out temporary transient drainage in the drainage storage tank (25) in the middle of going in the foam slideway chute downstairs and concentrate, and the sooty water after the one-level injection of separation, through overflow baffle [5] down gap baffling and on, on liquid surface height controlling plate [6], overflow and remove one-level overflow groove (9) outside the spray foam separator tank, sending two-stage injection foam separator (11) to carry out the two-stage injection identical with one-level by secondary force (forcing) pump (10) again separates, equally the foam that produces is scraped in the foam slideway pomegranate groove, overflow in the secondary overflow groove (12) and separate the back sooty water, again by three grades of force (forcing) pumps (13), send three grades of spray foam separator tanks (14) to carry out three grades of injection of separation, equally the foam that produces is scraped in the slideway chute, and the sooty water after separating, overflow in three grades of overflow grooves (15), again by level Four force (forcing) pump (16), send level Four spray foam separator tank (17) to carry out the level Four injection of separation, equally the foam that produces is scraped in the slideway chute, and the buck after separating, overflow in the buck grease removal tank (18) of half ground type, remove remaining oil content in the buck with the air supporting method, add the buck after an amount of flocculation agent (polymeric aluminum) oil removing simultaneously, send through first through buck reflux pump (19), second heat exchanger (1), (2) with after heating by the next thermal black water of gasification send gasification system back to.The buck of grease removal tank 50% goes to return grease removal tank (18) oil removal by air bubbling behind dissolving (21) and the molten gas of pressurized air adverse current after air supporting reflux pump (20) pressurization.The oil content of grease removal tank surface collection, send in the turning oil storage tank (24) by reclaiming oil pump (23) in flowing into refiltered oil groove (22), the foam of 1-4 level injection of separation all carries out the temporary storage drainage in the middle of the carbon black by foam slideway chute and concentrates to treat that the dry and charcoal slurry of next step dense charcoal slurry recycles in the drainage storage tank (25) again.The part buck is sent cyanogens-containing sewage water to handle workshop section 0107 and is handled by cyanogens-containing sewage water pump (30) in the buck grease removal tank (18).Rare sooty water when gasification system is driven send rare sooty water storage pond (28) to store after watercooler (27) cooling, treat full factory produce normal after, mend gradually by rare sooty water force (forcing) pump (29) again and go into the carbon black separation and recovery system.

In view of in the above-mentioned separation process the sooty water concentration of handling rarer, certainly will increase injection of separation flow processing flow and investment, therefore must reduce the sooty water circular flow significantly from change gasifying process equipment, also can adopt the temporary transient sedimentation of sooty water to concentrate (this can only be easy under the settled prerequisite just feasible at sooty water) and reduce sooty water processing flow significantly, its change flow process as shown in phantom in FIG., sooty water enters the sooty water of speeding to put after device (4) divides gas and goes sooty water to fall heavy pond (31) to carry out sedimentation and concentrate through energy recycle device (3) 0.2MPa that reduces pressure, the top clear water is through twice overflow, to Rinsing Area again through clear water reflux pump (32) directly deliver to the outlet grey water pipeline, the bottom concentrates sooty water (the about 1.0-1.5% of concentration) and is pressurized to 0.7MPa through one-level force (forcing) pump (33) and send coarse filter (6) to go one-level injection of separation groove (8) to carry out the one-level injection of separation after static mixer (7) step-down turbulence mixes again, its injection flow can by 100 cubic metres/hour reduce to the 50-40 cubic meter/hour, the size that this can significantly reduce nozzle quantity and dwindle the spray foam groove, thus the separation that further reduces sooty water is significantly invested.It is oils that sooty water separates first selected tensio-active agent, does not solidify the oils that forms liquid state and be scattered in the liquid exactly and can make tensio-active agent under operational condition.As if original oils is for solia particle, and the affinity of dust is very strong, once in conjunction with the jail is inseparable, then is strong the repulsion for moisture content, facts have proved; Oils also is the whipping agent of a very strong special performance, particularly performance is very outstanding in " liquid level eductor foaming process ", this foam performance and it are closely related and complementary to the affinity of solid dust, as long as in suspension, add a small amount of oils the suspension foam performance is strengthened greatly, and rest on the liquid level not sink for a long time by adding the formed oiliness foam of oil injection, it can concentrate by broken automatically bubble on liquid level, this is the desired foaming properties that is easy to aftertreatment in " liquid level eductor foaming process " just, particularly the characteristic of the oil whip that oil-containing is many is more outstanding, when oleaginousness increases to a certain group gradually, it can definitely be discharged moisture content, up to forming the pure oil whip of water content hardly.This foam not only rests on the liquid level for a long time, even and stir and carbon black and oil content separately to be returned in the solution go.This foam has only the method with heat stripping or drying treatment to allow oil content evaporate, and separates with carbon black.Therefore all be " liquid level eductor foaming process " best selection scope of application to increasing oil mass gradually up to forming pure oil whip from adding a small amount of oil.We can be according to the separation efficiency height, the kind of dense charcoal slurry and recovery purposes, charcoal slurry energy consumption for drying is low selects desired foam component easily with the foam aftertreatment, the general starting point of selecting that a kind of oils to make whipping agent, mainly being to decide with the purpose of the phase of giving, generally is safe and reliable with oils, and energy consumption is low when producing dried solid, low price is selected, and for example produces appropriate to the occasion oily the getting final product of fraction of selecting the low 80-120 of price ℃ for use of carbon black.

The spray foam separator tank unitized construction (seeing Fig. 3,4,5) that apparatus of the present invention adopted.The one end top, long limit of semi-enclosed steel tank (reinforced concrete also can) groove that it is characterized by 4200 * 2500 * 800 the flat slightly-inclined of rectangle is suitably on the locus, dispose 12 injection groups of one-inch pipe unit nozzle that interval 350MM is arranged in parallel, and on the cell body of the long limit of the other side of nozzle spout, be provided with [5], [6], [7] three diaphragm structures, separation back sooty water overflow ducts and foam downslide passage have been formed from face, dividing plate [5] is for separating back sooty water split flow plate, it act as and prevents sooty water or foam short circuit discharge, avoid bottom land to form the dead angle, the high about 50-80MM of split flow plate down gap and dividing plate [6] are fixing liquid level switchboard, height about 300-400mm in top separates the back sooty water and overflows outside the groove on the plate thus from lower to upper.On near the suitable locus of foam accumulative, the top split flow plate [5], polyphone has been installed [9] two of 2000 * 500 rectangular frame scraper plates (the wide about 200MM of scraper plate), and a driving motor [13] and corresponding deceleration device [12] and rotation axis [10] and bearing [11] respectively being set at the bottom land two ends, two driving motors are interlocked each other.During ordinary production, only driving an end motor can drive two polyphone frame scraper plates and turn clockwise by Fig. 5 direction of arrow and foam on the liquid level is scraped to foam slideway chute discontinuously with 0.5-2 rev/min, outside the drain tank, in case the operated motor fault stops operating, the starting of interlocking immediately of the standby motor of the other end, foam is discharged can carry out continuously.Using nozzle is the flat mouthful of nozzle that 1 writing brush is pressed into the flat mouthful of about 1-1.5MM in gap, and nozzle setting angle, locus are fixed after adjusting by on-spot injection test best effect.In order to improve the ejection efficiency of nozzle, also can be made into the nozzle of squirt pump formula.And the locus of frame froth paddle also needs to be fixed after the optimum position is adjusted in front and back up and down.Is good as for the cell body material with Stainless Acid Resistant Steel, but for economical and be suitable for and can make reinforced concrete rot-resistant structure, also can make liner rubber, plastics anticorrosion structure with the charcoal net, reduces investment outlay so as far as possible.

The dense charcoal slurry of separating among the present invention (adding heavy oil) returns gasifier system gas through handling also can mix with residual oil.Can the dense charcoal slurry that light oil (boiling point 80-100 ℃) is separated will be added when producing carbon black; carry out suitable drying treatment (such as rough vacuum roller dryer flow process; be exactly a kind of airtight and very superior drying process) to environment protection; the carbon black that reclaim dry back; can adopt traditional air elutriator, wind fan, wind to send cyclonic separator; facility denaturing treatment such as tablets press improve the quality and the personal value of this by product carbon, and these all are that proven technique can be taken the circumstances into consideration flexible employing.

Key issue of the present invention is the total efficiency of injection of separation and final Ash Water Separator degree of purification, and its application example simulates intermediate injection by our factory gasification washing sooty water (or enrichment sooty water) just to be separated and carry out producing feasibility flow process well designed on the successful basis.Simulate the intermediate injection experiment process and see accompanying drawing 1, this flow setting cubic capacity be 1.8 cubic metres material fluid bath (I); Flow be the 3.5-4 cubic meter/hour top hole pressure be the force (forcing) pump (II) of 0.3PMa, 1800 * 400 * 400 rectangle spray foam generation separator tank (III) and overflow groove (IV), reflux pump (V) and phegma storage tank (VI), and having set up circulation in the outlet of force (forcing) pump (II) and reflux pump (V) and having cut down and circulation tube, thereby constituted the perfect multi-stage jet separating feasibility that is interrupted to carry out an any suspension test, and the multi-stage jet on producing separates, this just multistage interruption spray separates institute's composition continuously, thereby experiment process is consistent with the actual production flow process basically.Simulate similar with regard to the injection of separation testing apparatus fully to the production tripping device again, because used nozzle is 1 writing brush nozzle, used spray foam generation separator tank also is the rectangular elements groove, this groove and nozzle and relative space position thereof, the unit of Production Flow Chart is formed just, the mixing of different positions of just refueling and oil, very undesirable on testing apparatus, because be easy to buoyant oil, disposable adding above material fluid bath, and agitator speed is slower, thereby it is very inadequate with mixing of sooty water, and spraying pressure 0.3MPa is lower again in addition, and this has just influenced one virtually greatly, the injection of separation efficient of secondary, but on this simple and easy and unfavorable testing apparatus, high separation efficiency (96.4%-97.1%) and low buck degree of purification (seeing attached list 1) have been obtained just.Not hard to imaginely mix in the high Production Flow Chart of very abundant spraying pressure, can affirm that its separation efficiency and buck degree of purification are fully to guarantee, might three grades just can reach the productive capacity of expection after the injection at profit.So the intermediate injection separation test is feasible, Production Flow Chart also is fully feasible.

Just on the fully feasible basis of injection of separation, realized filter press technique can not be from sooty water the dream of separating off carbon black, realized cutting down the oil extraction directly from the washing sooty water separating off carbon black become dense charcoal slurry, and then the purpose of producing carbon black.Consequently save separation facilities investment 1/2--2/3, all cut down the high energy consumption of oily extraction, the proper value and the consequent high benefit of carbon black products have been realized, (but 300,000 tons of synthesis ammonia plant contribution taxes in every year are more than 2,000 ten thousand yuan), thus cut down oil extraction directly from Heisui River the dense charcoal slurry of Separation and Recovery to produce carbon black be fully feasible and imperative.

Legend (Fig. 3,4,5)

(1) injection of separation generation trough body

(2) nozzle

(3) control interrupts line

(4) sooty water house steward

(5) split flow baffle plate

(6) overflow height switchboard

(7) foam chute board

(8) foam slideway guide plate

(9) foam frame rotor segment

(10) transmission shaft

(11) rolling bearing

(12) motor deceleration device

(13) electric motor

(14) parting liquid relief outlet

Fig. 1 is the solid-liquid separating method experiment flow figure of suspension liquid level eductor foam type.

Fig. 2 directly washes the schema of separation of produced carbon black the sooty water from gasification for the present invention.

Fig. 3 is the overall wiring layout of spray foam generation separator tank.

Fig. 4 is that spray foam generation separator tank I-I is to synoptic diagram.

Fig. 5 is that spray foam generation separator tank II-II is to synoptic diagram.

Twice typical simulation intermediate experiment data and calculated data table (subordinate list 1)

Separate rank	Date of test	The whole story carbon black water			The foamy carbon slurry is analyzed				Calculated data
													Gu % begins	Gu % end	Separative efficiency	Gu %	Oil %	Water %	Heavy (KG)	Gu oil/than	Gu water/than	Gu profit/than	The oil water-solid ratio is average
		One	August 19 July 19	1.29  0.44	0.43  0.18	86.60  59.10	9.60  13.30	2.04  2.07	88    84	56  16.0	0.21  0.20	8.88  6.30												9.04  6.50
Two	August 19 July 19												0.48  0.18	0.28  0.13	11.00  11.00	/  14.30	/  5.70	/    80	51.8  18.6	/  0.4	/  5.6	/  6.0
		Three	August 19 July 19	0.28  0.13	0.097  0.12	15.00  2.00	13.48  15.20	14.52  0.82	72.00  84.00	30.50  13.60	1.18  0.05	5.3  5.3												6.48  5.55
Four	August 19 July 19												0.097  0.12	0.038  0.011	3.70  25.00	/  11.78	/  0.22	/  88 00	8.00  8.10	/  0.02	/  7.50	/  7.52
		Comprehensively	August 19 July 19			96.3  97.1				144.3  56.3															7.0  6.25
Experimental condition is selected: 1, carbon black water initial concentration (%) 1.29 0.44 2, carbon black water control temperature (℃) 38-43 40-43 3, force (forcing) pump outlet pressure (MPa) 334, injection flow (cube m/h) 3.5-4.5 4.0-4.5 5, one-off oiling amount (kilogram) 13 17

Claims (5)

1, a kind of directly processing method of separation of produced carbon black from gasification washing sooty water, in the time of residual oil partial oxidation synthetic ammonia gasification gas, the Separation and Recovery of continuous by product carbon in the gasification gas, main at present employing water Xian and oil extraction, and carbon black is transferred in the raw material residual oil the most at last, gasifier system gas is returned in recirculation, this processing method then is to cut down the oil extraction, cut down the carbon black circulation and reclaim system air-flow journey, directly the Separation and Recovery carbon black becomes dense charcoal slurry from gasified water Xian sooty water, and and then dried recovered process for producing carbon black product, thereby investment and energy consumption have been realized reducing significantly, due value of carbon black products and distinct economic have been realized, and thoroughly eliminated the carbon black circulation and reclaimed all drawbacks of making gas, in view of gasification production requirement by product carbon must disposable thorough isolation of purified, carbon blacksurface tension force is big, make employing " liquid level eductor foaming process " come separating off carbon black to become infeasible, and through the moment of disposable jet foam transfer efficiency also only about about 70%, so the separation process that adopts is to add a small amount of surfactivity oil, through level Four (inferior) injection continuously, disposable thorough isolation of purified flow process, make the isolating total efficiency of sooty water reach 96.4-97.1%, Here it is " flow mechanics principle that the liquid level flow at high speed is gas-entrained and the married particular embodiment of suspended surface physical activity " this multi-injection, the production technique that disposable thorough separating off carbon black purifies buck is described below:

Quench sooty water (the about 7.8MPa of pressure that comes out from texaco gasification, temperature contains the about 0.5-0.7% of carbon black concentration for about 261 ℃, about 100 cubic metres/hour of flow) enters sooty water first interchanger (1) continuously, second interchanger (2) is cooled to 50-60 ℃ with the cold buck heat exchange that buck reflux pump (19) is sent here, enter again and speed to put the multiple gases that device (4) is dissolved in the sooty water under with high pressure and speed to release through energy recycle device (3) 0.7MPa that reduces pressure, put separator (5) tells and goes boiler to make fuel after carrying moisture content secretly in the gas or reduce internal heat torch emptying through speeding, the sooty water of speeding to release enters in the coarse filter (6) coarse grain foreign material in the sooty water is filtered, in order to avoid plug nozzle, filter the back and add the surfactivity oil of sending here by petrol-feed pump (26), after mixing, static mixer (7) cause strong turbulence to stir through differential pressure valve with the pressure drop of the 0.2MPa left and right sides again, after making sooty water and a small amount of surfactivity oil thorough mixing, go one-level spray foam separator tank (8) to carry out the one-level injection of separation, spraying on the liquid level of the place ahead immediately, produce and assemble a large amount of foams, scrape with the frame scraper plate [9] of slow rotation and to carry out temporary transient drainage in the drainage storage tank (25) in the middle of going in the foam slideway chute downstairs and concentrate, and the sooty water after the one-level injection of separation, through overflow baffle [5] down gap baffling and on, on liquid surface height controlling plate [6], overflow and remove one-level overflow groove (9) outside the spray foam separator tank, send two-stage injection foam separator (11) to carry out the two-stage injection identical by secondary force (forcing) pump (10) again and separate, equally the foam that produces is scraped in the foam slideway chute with one-level; And separate back sooty water overflow to secondary overflow groove (12), again by three grades of force (forcing) pumps (13), send three grades of spray foam separator tanks (14) to carry out three grades of injection of separation, equally the foam that produces is scraped in the slideway chute, and the sooty water after separating, overflow in three grades of overflow grooves (15), again by level Four force (forcing) pump (16), send level Four spray foam separator tank (17), carry out the level Four injection of separation, equally the foam that produces is scraped in the slideway chute, and the buck after separating, overflow in the buck grease removal tank (18) of half ground type, remove remaining oil content in the buck with the air supporting method, add the buck after an amount of flocculation agent (polymeric aluminum) oil removing simultaneously, send through first through buck reflux pump (19), second heat exchanger (1), (2) with after heating by the next thermal black water of gasification send gasification system back to, the buck of grease removal tank 50% goes to return grease removal tank (18) oil removal by air bubbling behind dissolving (21) and the molten gas of pressurized air adverse current after air supporting reflux pump (20) pressurization, oil content after the grease removal tank surface collection, in flowing into refiltered oil groove (22), send in the turning oil storage tank (24) by recovery oil pump (23) again, carry out the temporary storage drainage in the middle of the foam of 1-4 level injection of separation is all starched down to charcoal by foam slideway chute in the drainage storage tank (25) and concentrate to treat that next step dense charcoal slurry drying and carbon black recycle; The part buck is by cyanogens-containing sewage water pump (30) in the buck grease removal tank (18), sending cyanogens-containing sewage water to handle workshop section 0107 handles, rare sooty water when gasification system is driven is after watercooler (27) cooling, send rare sooty water storage pond (28) to store, after treating that full factory produces normally, mend gradually by rare sooty water force (forcing) pump (29) again and go into the carbon black separation and recovery system;

In view of handled sooty water concentration in the above-mentioned separation process rarer, certainly will increase injection of separation flow processing flow and investment, therefore must reduce the sooty water circular flow significantly from change gasifying process equipment, also can adopt the temporary transient sedimentation of sooty water to concentrate (this can only be easy under the settled prerequisite just feasible at sooty water) reduces sooty water significantly and handle flow: sooty water enters the sooty water of speeding to put after device (4) divides gas and goes sooty water to fall heavy pond (31) to carry out sedimentation and concentrate through energy recycle device (3) 0.2MPa that reduces pressure, the top clear water is through twice overflow, to Rinsing Area again through clear water reflux pump (32) directly deliver to the outlet grey water pipeline, the bottom concentrates sooty water (the about 1.0-1.5% of concentration) and is pressurized to 0.7MPa through one-level force (forcing) pump (33) and send coarse filter (6) to go one-level injection of separation groove (8) to carry out the one-level injection of separation after static mixer (7) step-down turbulence mixes again, its injection flow can by 100 cubic metres/hour reduce to the 50-40 cubic meter/hour, the size that this can significantly reduce nozzle quantity and dwindle the spray foam groove, thus the separation that further reduces sooty water is significantly invested;

The dense charcoal slurry of separating in this processing method (adding heavy oil) can the residual oil mixing return gasifier system gas through handling also; can the dense charcoal slurry that light oil (boiling point 80-100 ℃) is separated will be added when producing carbon black; carry out suitable drying treatment (such as rough vacuum roller dryer flow process; be exactly a kind of airtight and very superior drying process) to environment protection; the carbon black that reclaim dry back; can adopt traditional air elutriator; the wind fan; wind send cyclonic separator; facility denaturing treatment such as tablets press improve the quality and the personal value of this by product carbon; these all are that proven technique can be taken the circumstances into consideration flexible employing, (not expressing flow process among the figure).

2, the directly processing method of separation of produced carbon black from gasification washing sooty water as claimed in claim 1, it is oils that sooty water separates first selected tensio-active agent, under operational condition, do not solidify the oils that forms liquid state and be scattered in the liquid exactly and can make tensio-active agent, original oils is very strong for the affinity of solia particle, dust, as if the jail is inseparable once combination, for moisture then is strong the repulsion, facts have proved; Oils also is the whipping agent of a very strong special performance, particularly performance is very outstanding in " liquid level eductor foaming process ", this foam performance and it are closely related and complementary to the affinity of solid dust, as long as in suspension, add a small amount of oils the suspension foam performance is strengthened greatly, and rest on the liquid level not sink for a long time by adding the formed oiliness foam of oil injection, it can concentrate by broken automatically bubble on liquid level, this is the desired foaming properties that is easy to aftertreatment in " liquid level eductor foaming process " just, particularly the characteristic of the oil whip that oil-containing is many is more outstanding, when oleaginousness increases to a certain component gradually, it can definitely be discharged moisture content, until forming the pure oil whip of water content hardly, this foam, not only rest on the liquid level for a long time, even stirring also can not make carbon black and oil content separately return in the solution and go, this foam has only the method with heat stripping or drying treatment to allow oil content evaporate, separate with carbon black, therefore all be " liquid level eductor foaming process " best selection scope of application to increasing oil mass gradually up to forming pure oil whip from adding a small amount of oil, we can be according to the separation efficiency height, the kind of dense charcoal slurry and recovery purposes, charcoal slurry energy consumption for drying is low selects desired foam component easily with the foam aftertreatment, the general starting point of selecting that a kind of oil to make whipping agent, mainly be to decide with the purpose of the phase of giving, generally be safe and reliable with oils, energy consumption is low when producing dried solid, low price is selected, and for example produces appropriate to the occasion oily the getting final product of fraction of selecting the low 80-120 of price ℃ for use of carbon black.

3, a kind of directly device of separation of produced carbon black from gasification washing sooty water, the spray foam separator tank unitized construction that is adopted, the one end top, long limit of semi-enclosed steel tank (reinforced concrete also can) groove that it is characterized by 4200 * 2500 * 800 the flat slightly-inclined of rectangle is suitably on the locus, dispose 12 injection groups of one-inch pipe unit nozzle that interval 350MM is arranged in parallel, and on the cell body of the long limit of the other side of nozzle spout, be provided with [5], [6], [7] three diaphragm structures, separate back sooty water overflow ducts and foam downslide passage thereby formed, dividing plate [5] is for separating back sooty water split flow plate, it act as and prevents sooty water or foam short circuit discharge, avoid bottom land to form the dead angle, the high about 50-80MM of split flow plate down gap, and dividing plate [6] is fixing liquid level switchboard, the about 300-400mm of top height, separating the back sooty water overflows outside the groove on the plate from lower to upper thus, on near the suitable locus of foam accumulative, the top split flow plate [5], polyphone has been installed [9] two of 2000 * 500 rectangular frame scraper plates (the wide about 200MM of scraper plate), and a driving motor [13] and corresponding deceleration device [12] and rotation axis [10] and bearing [11] are set respectively at the cell body two ends, two driving motors are interlocked each other, during ordinary production, only driving an end motor can drive two polyphone frame scraper plates and turn clockwise by Fig. 5 direction of arrow and foam on the liquid level is scraped to foam slideway chute discontinuously with 0.5-2 rev/min, outside the drain tank, in case the operated motor fault stops operating, the starting of interlocking immediately of the standby motor of the other end, foam is discharged can carry out continuously.

4, the directly device of separation of produced carbon black from gasification washing sooty water as claimed in claim 3, the nozzle that uses is the flat mouthful of nozzle that 1 writing brush is pressed into the flat mouthful of about 1-1.5MM in gap, and nozzle setting angle, locus are fixed after adjusting by on-spot injection test best effect.In order to improve the ejection efficiency of nozzle, also can be made into the nozzle of squirt pump formula.

5, the directly device of separation of produced carbon black from gasification washing sooty water as claimed in claim 3, the locus of the frame froth paddle in the device also needs about the scene, front and back are fixed after adjusting to the optimum position.

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