CN1014150B - Method and apparatus for carbon black prodn. - Google Patents
Method and apparatus for carbon black prodn.Info
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- CN1014150B CN1014150B CN86104576A CN86104576A CN1014150B CN 1014150 B CN1014150 B CN 1014150B CN 86104576 A CN86104576 A CN 86104576A CN 86104576 A CN86104576 A CN 86104576A CN 1014150 B CN1014150 B CN 1014150B
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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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Abstract
The present invention relates to a method and an apparatus which are used for producing carbon black. Oil and an oilchannel line which uses heavy oil as fuel are mainly used to produce the carbon black, and air for atomizing and combusting fuel oil is combined into a system and preheated at a medium temperature; the air along with the fuel oil rotates in the axial direction and enters a combustion furnace, the fuel oil is completely combusted in the combustion furnace, raw oil is sprayed in the direction forming a right angle with the shaft line of a hollow throat, and carbon black fumes are cooled downstream by water fog below 980 DEG C. The method and the apparatus can be used to produce various kinds of new technological carbon black and conventional carbon black, and can save energy; compared with conventional carbon black ISAF produced by a conventional technology, the oil consumption of the new technological carbon black or conventional carbon black ISAF which is produced by the present invention decreases by 15 to 20%.
Description
Carbon black be the hydrocarbon polymer Pintsch process and a kind of carbon material, mainly as rubber packing, also use in multiple field such as printing ink.The invention relates to method of producing black pigment and relevant device.Having narrated the employing liquid oils on the one hand is oil fuel and raw material production sooty method, promptly adopts oil/oil circuit line to produce the sooty method; Narrated the key equipment that uses present method on the other hand.
In the prior art, not only of poor quality with the carbon black that ordinary method is produced, and the energy consumption height.The new process carbon black that adopts novel method to produce though have good quality and advantage of low energy consumption, exists some technological difficulties or some masty technical problems.These difficult points or problem are:
The used air that burns, the preheating temperature height needs the highly effective air preheater, but that its material requires is high, and complex structure.
The most geseous fuel that adopt of production of carbon black as Sweet natural gas etc., have only minority factory to adopt liquid fuel, and, generally be to adopt lightweight oil as fuel, just usually said employing liquid oil is fuel and raw material production sooty method, promptly adopts oil/oil circuit line to produce the sooty method.Geseous fuel or the lightweight oil fuel difficulty of generally originating.
Even if adopting the oil throwing of light Fuel fuel also is to adopt high ballast carrier atomization type fuel nozzle, or the fuel nozzle of being made up of low-pressure nozzle and air-deflector, and oil fuel and atomizing air (or claiming primary air) axially or tangentially enter roasting kiln along roasting kiln.This type of fuel nozzle structure is complicated.Because each becomes system to secondary air (being combustion air) with primary air, enter roasting kiln separately, institute is so that technical process is tending towards complexity or equipment, instrument increases, and operation is also more inconvenience.
Because secondary air is different with flowing to of combustion oil, atomizing air, or, make the roasting kiln type of furnace and craft piping thereof comparatively complicated because oil fuel and atomizing air tangentially enter roasting kiln along roasting kiln.
The heat load intensity of roasting kiln and Reaktionsofen and trunnion is generally all than higher, and their flame retardant coating general requirement is by special refractory materials manufacturing, but such refractory materials source difficulty, the price height, and work-ing life is short.
The present invention has overcome these technological difficulties or masty technical problem.Its main points are: the air that fuel oil combustion uses, and its preheating temperature is moderate, and the air preheater structure just can be simpler like this, and material also is easy to solve.
The present invention adopts liquid fuel, mainly is mink cell focus (also available lightweight oil), and as ethylene bottom oil etc., its wide material sources help industrial applications the present invention.
The oil fuel fuel nozzle that the present invention adopts atomizing nozzle and axial admission formula swirler etc. to form, simple in structure, compact, cost is low.The combustion gases that produce through this fuel nozzle have the short characteristics of flame.Because oil fuel and air axially enter roasting kiln along roasting kiln, and the air of atomizing and burning usefulness is combined into system input roasting kiln, institute so that the roasting kiln type of furnace, craft piping and simplified control and equipment, instrument reduce.
Stock oil injection stream thigh is known solid column, is easy on the technology grasp.Adopt known stock oil nozzle, have a practicality and be easy to the spray orifice length of processing and manufacturing and the ratio of its diameter.Adopt the method for following current cooling carbon black smoke in the known stove, not only make furnace pressure unlikely too high, and the thermopair that Reaktionsofen and thermometric thereof are used is not fragile.The water spouting nozzle of forming quencher is the atomizing nozzle of using always, the easy processing and manufacturing of such nozzle.
Roasting kiln and improved Reaktionsofen and improved trunnion, not only simple in structure, easily manufactured, and mainly be to have new function.More than two stove flame retardant coatings can make with corundum based refractory materials.Trunnion is a water jacket formula steel construction.
Reference
BP 1359216 USP 3922335 USP 4206192
BP 1481152 USP 4213939 USP 4198469
USP 3990845 clear 40-8403
An object of the present invention is to provide a kind of method of producing carbon black, is to adopt liquid material fuel (mainly being mink cell focus) and feedstock oil, namely produces the method that tire tread glue is used new process carbon black take heavy oil as main oil/oil circuit line. The new process carbon black good quality of producing with this method, and greatly energy-conservation.
Further object of the present invention provides one and produces tire tread glue with the method for conventional carbon black, and it is increased economic efficiency.
Another one purpose of the present invention provides a kind of for using the key equipment of wanting required for the present invention, and this equipment comprises: fuel oil burner and corresponding combustion furnace, improved trunnion and known feedstock oil injector, improved reacting furnace and quencher commonly used.
An additional purpose of the present invention is according to the viewpoint of invention and adopts key equipment of the present invention, can produce multiple carbon black products, to realize that it is energy-conservation or to improve some performance of carbon black.
Other purposes of the present invention can be learnt in the following description.
Method summary: can produce any new process carbon black in N200 series to 300 series or the serial carbon black of N100 or corresponding any conventional carbon black, especially the new process carbon black N339 in the suitable for producing N300 series with present method.
According to the present invention, the stock oil of high-velocity jet stream strand is entered Reaktionsofen from high temperature, the high-speed gas atomization of roasting kiln and after mixing and is generated carbon black.
High temperature, high velocity air are that oil fuel forms in the roasting kiln internal combustion.Oil fuel is ethylene bottom oil or the similar therewith oil product of character.Also can adopt lightweight oil as combustion oil.The Lower heat value of oil fuel is greater than 8000Kcal/kg, and more preferably greater than 9000Kcal/kg, preheating temperature is 40 ℃ to 240 ℃, is preferably 50 ℃ to 150 ℃ (is normal temperature) input pressures and is 3 when adopting light-weight fuel oil to 20kgf/cm
2, be preferably 7 to 15kgf/cm
2Oil fuel once or after once above the atomizing, is axially entered in this roasting kiln perfect combustion along roasting kiln by atomizing nozzle atomizing and air in the oil fuel fuel nozzle.Inflammable gas in the gas of burning back seldom or do not have.
Fuel oil combustion and the needed air of atomizing are through preheating, and its preheating temperature is 250 ℃ to 500 ℃, preferably 350 ℃ to 470 ℃.Air forms the high speed rotating air-flow by after the swirler in the oil fuel fuel nozzle, and the mist of oil (using atomizing nozzle) after then once atomizing together meets and oil fuel is carried out secondary-atomizing.In operating practice, major part is a rotational flow air.But the small part direct current air is preferably arranged, distribute in order to operation or adjusting roasting kiln longitudinal temperature, general direct current air increases, and move to this stove downstream direction the roasting kiln high-temperature zone.According to the present invention, air is based on an eddy flow, but is not limited to eddy flow one time.For example, can realize repeatedly eddy flow by increasing swirler or flameholder quantity, guiding blast cap etc.The primary combustion rate of oil fuel is 135% to 180%, best 140% to 150%.Produce the big or less required primary combustion rate of carbon black of specific surface area of particle, generally be lower than the required primary combustion rate of particle carbon black less or that specific surface area is bigger of producing.The formed high temperature swirling eddy of oil fuel perfect combustion is 1480 ℃ to 1680 ℃ at roasting kiln inwall top temperature point, is preferably 1500 ℃ to 1600 ℃, the Mach 2 ship 0.3 to 0.8 in trunnion, preferably 0.4 to 0.7 Mach.Pressure reduction between roasting kiln and the Reaktionsofen is 800 millimeter water column to 2400 millimeter water column.
According to the present invention, the employing ethylene bottom oil is a stock oil, but is not limited thereto kind of an oil, can adopt character close single oil product or mixing oil.For example, ethylene bottom oil and carbolineum are mixed, and ethylene bottom oil and coal tar are mixed, and carbolineum and coal tar are mixed, and ethylene bottom oil, carbolineum, coal tar are mixed and the oil of ethylene bottom oil, carbolineum and petroleum system is mixed or the like as stock oil.The index of correlation of stock oil is 120 to 170, and carbon content is greater than 80%, and bituminous matter and carbon residue content should lack as far as possible.The preheating temperature of stock oil is 60 ℃ to 240 ℃, is preferably 80 ℃ to 200 ℃; Input pressure is 16kgf/cm
2To 32kgf/cm
2, be preferably 18kgf/cm
2To 28kgf/cm
2Stock oil injection stream thigh is solid column, and becomes 90 degree directions to add in this trunnion air-flow along the trunnion axis.Thereby above-mentioned stream thigh collides with high temperature, high velocity air from the combustion chamber and obtains good atomizing, mixes fully, heats rapidly and evaporation and dehydrogenation, cracking or the like, and then has begun the sooty generative process.The penetration coefficient of stock oil injection stream thigh in trunnion is that the oil column penetration coefficient is 40% to 70%, and this mainly is observed through the prestige fire tube or the fire hole of 20 to 30 millimeters of internal diameters on the swirler blades.The kinetic energy of stock oil when the stock oil nozzle sprays with from the high temperature of roasting kiln, high velocity air ratio at the kinetic energy of trunnion oil spout point section, promptly hydraulic pneumatic can be than being 40 to 160, best 60 to 130.The ratio of the air capacity that amount of actual air for combustion and stock oil, combustion oil perfect combustion are required, be referred to as total rate of combustion, its value is 20% to 50%, total rate of combustion is to be used for one of important means that changes kind of carbon black, required total rate of combustion generally is higher than the needed total rate of combustion of the corresponding new process carbon black of production when for example, producing the common process kind of carbon black.
According to the present invention, with the method for directly spraying water, quick cooling is to the temperature of regulation in Reaktionsofen for carbon black smoke, and this temperature is less than or equal to 980 ℃.Quenched water is to be forced into 8kgf/cm by water pump
2To 16kgf/cm
2, and be ejected in the Reaktionsofen through quencher, simultaneously, the spray direction of quenched water flows to consistent with carbon black smoke in the Reaktionsofen, and the carbon black gas in the Reaktionsofen is 0.015 second to 0.055 second in the high-temperature zone residence time.This time also is to regulate carbon black mass or change one of important measures of kind of carbon black, for example, the needed residence time of new process of production carbon black N234, is generally less than the needed residence time of new process of production carbon black N339; Carbon black smoke is in general needed residence time when producing corresponding new process carbon black residence time in furnace high-temperature district when producing conventional carbon black; But neither be absolute, can change as above said primary combustion rate or total rate of combustion reaches this purpose.The adjustment of the residence time is to realize by the chilling position that changes on the Reaktionsofen.
The powdery carbon black adopts known method to collect and granulation, particularly adopts non-slurry pelletizing.According to the present invention, sooty toluene transmittance is gratifying.
Equipment summary and description of drawings:
This accompanying drawing belongs to the key equipment sketch in total inventive concept, for ease of understanding the present invention, with regard to description of drawings and be summarized as follows.
Fig. 1 is the key equipment sketch.Fig. 2 is the A-A cross-sectional among Fig. 1.Fig. 3 is the B-B cross-sectional among Fig. 1.Fig. 4 is an oil fuel fuel nozzle sketch.Fig. 5 is known stock oil injector sketch, and such injector has 1 to 6.
In Fig. 1, the 1st, oil fuel fuel nozzle (see figure 4).The 2nd, roasting kiln, shape is preferably expanded for expansion shape or round shape in its upstream, and the reamer angle is that 80 degree are to 120 degree, in order to the burning of fuel and the reinforcement of combustion processes.Roasting kiln (2) downstream is a shrinkage type, the cone angle that contracts be 20 degree to 35 degree, fall in order to reducing temperature and pressure, and adapt with trunnion contraction section (5).Its interior interlude of roasting kiln (2) is a round tube type, and roasting kiln length is 3 to 6 with the ratio of this barrel bore.The 3rd, flame retardant coating and thermal insulation layer, innermost layer is with corundum matter or be better than the corundum based refractory materials manufacturing.The 4th, steel shell.4a, 4b, 4c, 4d are that the Reaktionsofen furnace shell is taken over, and these are taken over corresponding to the spout hole on the Reaktionsofen (9).The 5th, trunnion contraction section, its inner core cone angle and roasting kiln (2) the downstream cone angle that contracts that contracts adapts substantially, and it is that upstream extremity is connected with flange with roasting kiln (2) downstream that this trunnion shrinks initiating terminal.5a is that the trunnion contraction section is taken over, available its sampling or spray into the raw material wet goods, and it becomes 90 to spend the direction settings with above-mentioned trunnion contraction section (5) axis, and along the circumferential direction of trunnion contraction section (5) 1 to 4 (only drawing one among the figure) is set evenly as required.The 6th, trunnion straight section, inner core are known round shape.Trunnion straight section upstream is connected with flange with trunnion contraction section downstream end.The 7th, trunnion expansion segment, inner core are gradually expanded form, and the reamer angle is that 3 degree are to 7 degree.7a is that the trunnion expansion segment is taken over, and it becomes 90 degree direction settings with trunnion expansion segment (7) axis, and can along trunnion expansion segment (7) circumferential direction 1 to 6 (only drawing one among the figure) be set evenly according to the throughput size.Trunnion expansion segment upstream extremity promptly expands initiating terminal and trunnion straight section (6) downstream end links with flange.The trunnion total length is 500 millimeters to 1200 millimeters, is preferably 600 millimeters to 800 millimeters, in order to reducing resistance and thermosteresis and handled easily etc.Trunnion also can be used stainless steel, high temperature steel manufacturing with known carbon steel manufacturing.The 8th, stock oil injector (see figure 5) can have 1 to 6 according to throughput.The 9th, improved Reaktionsofen, upstream is expansion shape in it, and the reamer angle is 80 to spend to 120 degree, and such reamer angle helps reducing the eddy current that the effect of entrainmenting causes from the trunnion air-flow.Reaktionsofen length is 3 to 10 with the ratio of the internal diameter of its cylindrical portions may.Reaktionsofen (9) upstream extremity is connected with trunnion expansion segment (7) tract.The 10th, the quencher of using always, such quencher can have 1 to 4 (only drawing 2 among the figure).The 11st, vacuum doughunt is full of water coolant (water coolant that do not draw among figure adapter) in it.The 12nd, the trunnion urceolus.
In Fig. 2,6a is that trunnion straight section (6) is taken over, it is connected with stock oil injector (8), and this adapter becomes 90 degree to be provided with trunnion straight section (6) axis, and along trunnion straight section (6) circumferential direction 1 to 6 (only drawing 1 among the figure) is set evenly according to the throughput size.
In Fig. 3,4a is the adapter of Reaktionsofen furnace shell.9a is a spout hole, and it and Reaktionsofen furnace shell are taken over (4a) and adapted.This spout hole becomes with ground flatly to be provided with 1 to 4 along the Reaktionsofen axis, in order to regulating carbon black smoke at residing time in furnace, and becomes 90 degree with Reaktionsofen (9) axis.10a is special gate valve.
In Fig. 4, the 13rd, water jacket is protected swirler (15), wind cover (17) and fuel oil burner (18) with it.The urceolus of water jacket (13) is with stainless steel or carbon steel manufacturing.13a is the water inlet pipe of water jacket (13), and this pipe is deep near water jacket (13) downstream end.The 14th, the pull bar web member.Swirler (15) can axially be pulled along fuel oil burner (18) and fueling oil hose (20) by this web member, regulates the relative position of swirler (15) and wind cover (17) with this.When the two when increasing, rotational flow air reduces and direct current air increases.The 15th, swirler is the axial admission formula.It makes air produce high speed rotating, and oil fuel is mixed and atomizes.By our method of calculation, its swirl strength is 1.3 to 3.6, is preferably 1.6 to 2.1.Swirler (15) is used the carbon steel manufacturing, the most handy stainless steel manufacturing.15a hopes the fire tube.One end is welded in by on the swirler blades of perforate, and the other end is equipped with about 2 mm thick quartz glass plates.The 16th, the blade of swirler (15), this blade are welded between the inner core and urceolus of swirler (15).The shape of swirler blades (16) can be helically twisted blade, spiral straight blade or other form.The blade mean obliquity be 30 the degree to 60 the degree, be preferably 40 the degree to 50 the degree.The blade opacity is 1.0 to 1.9, is preferably 1.1 to 1.7.The 17th, the wind cover, this wind cover adapts with swirler (15), water jacket (13), uses the carbon steel manufacturing, the most handy high temperature steel manufacturing.The 18th, the atomizing nozzle of using always carries out the atomizing first time with it to oil fuel.Distance between the downstream end of the downstream end of this nozzle and swirler (15) is 20 millimeters to 100 millimeters, and the distance between nozzle downstream end and the wind cover downstream end is greater than 25 millimeters.Said nozzle is made with stainless steel.The 19th, plug sleeve, it can make a small amount of center wind (direct current) flow through from swirler (15) inner core on the one hand, plays fixed fuel oil pipe (20) effect on the other hand, thereby reaches the relative position of adjusting or fixed fuel oil burner nozzle (18) and swirler (15).The 20th, fueling oil hose, this pipe is connected with plug sleeve (19), and downstream end is connected with fuel oil burner (18) upstream extremity.
In Fig. 5, the 21st, injector head, cylindrical is the taper of contracting, and downstream end has a straight section, such straight section is convenient to make and operation.Downstream spray orifice length (L) is 2 to 6 with the ratio of its internal diameter (D), is preferably 3 to 5.The 22nd, nozzle connection.The 23rd, the raw material oil pipe.The 24th, stopper, its outer ring diameter is less than the internal diameter of trunnion adapter (5a, 6a, 7a), and interior ring is connected with raw material oil pipe (23).The 25th, gland, raw material oil pipe (23) is being overlapped in this gland the inside, and ring is connected with screw thread with trunnion adapter (5a, 6a, 7a) in the downstream.
According to the present invention, adopt the blower fan of 5000 millimeter water column to 7000 millimeter water column can overcome oil fuel fuel nozzle and trunnion gas-flow resistance.Raw oil pump is a high-pressure type, for example, and 40kgf/cm
2To 60kgf/cm
23GR type spiral pump or other similar injection pump of level.
Advantage of the present invention and positively effect thereof:
By the new process carbon black that the present invention produces, have carbon black " particle " smooth surface, " particle " size evenly, the tinctorial strength height, surfactivity is big and contain the physical and mechanical properties excellent characteristics of carbon black vulcanized rubber.For example, the new process carbon black N339 that goes out produced according to the invention by its classification naming standard, should belong to high abrasion type carbon black, but its quality level exceeds a grade than high abrasion type carbon black, promptly is equivalent to intermediate super abrasion furnace black.This is first advantage of the present invention.
Second advantage of the present invention is greatly energy-conservation.For example, new process carbon black N234 and N339 and the intermediate super abrasion furnace black (conventional products) that goes out produced according to the invention is than the conventional carbon black of producing on conventional equipment with ordinary method.Intermediate super abrasion furnace black for example, oil consumption will reduce more than 15% to 20% or 20%.
The 3rd advantage of the present invention is the restriction that is not subjected to geseous fuel, and it adopts liquid fuel, and promptly oil/oil circuit line is produced carbon black.This facilitates those and lacks the enforcement the present invention of factory who does not have geseous fuel.
The 4th advantage of the present invention is that the product of producing has diversity, for example, can produce from N200 series to N300 according to the present invention or N100 series new process carbon black or accordingly from N200 series to N300 series or the conventional carbon black products of N100 series.
The 5th advantage of the present invention is that key equipment adaptability is stronger, and except producing the above-mentioned carbon black products, can also be according to the present invention illustrated viewpoint and adopt key equipment among the present invention is produced other oil oven method carbon black beyond the above-mentioned carbon black.
Last advantage of the present invention is that device structure and worker's throttling journey are simple, and less demanding to equipment material, device lifetime is long.
Other advantage of the present invention can be apparent in above narration.
Implement best mode of the present invention or embodiment
About 400 tons/year of testing apparatus nominal capacities.Those of ordinary skill in the field can reproduce or implement the present invention.Example one, employing ethylene bottom oil are oil fuel and stock oil, and its character sees Table 1: processing parameter sees Table 2: device parameter sees Table 3: product performance see Table 4.
Table 1, ethylene bottom oil character
Proportion, d
201.042
Viscosity, ° E
80 201.84
Moisture content, the % vestige
Lower heat value, Kcal/kg9460
The BMCI(index of correlation) about 140
Table 2 processing parameter
The fuel oil mass, L/h 45～48
The raw material oil mass, L/h 95～98
Air capacity, Nm
3/ h 661
The chilling water yield, m
3/ h 0.133
Alkali number (Kcl) ppm 2～4
Preheating Temperature for Fuel Oil, ℃ 184
The fuel oil preheating temperature, ℃ 176
Air preheating temperature, ℃ 311
Roasting kiln inwall top temperature point, ℃ 1570～1610
Flue-gas temperature behind the chilling ℃ is not more than 700
The oil fuel input pressure, kgf/cm
29～12
The stock oil input pressure, kgf/cm
218～22
Quenched water pressure, kgf/cm
29～13
Roasting kiln and Reaktionsofen pressure reduction, millimeter water column 900～1200
The primary combustion rate, % 145～148
The oil column penetration coefficient, % 50-70
Total rate of combustion, % 43～46
Trunnion Mach number 0.43～0.47
Hydraulic pneumatic can be than 80～85
The high-temperature zone residence time, second 0.025～0.043
Carbon black output, kg/h 53
Table 3 device parameter
Swirler swirl strength 2.057
About 45 degree of swirler blades mean obliquity
Swirler blades opacity 1.65
(the oil fuel fuel nozzle of above employing Fig. 4 form)
Roasting kiln length and internal diameter ratio 3.6
Reaktionsofen length and internal diameter ratio 4.4
Roasting kiln internal diameter and trunnion internal diameter ratio 2.5～5
(roasting kiln, Reaktionsofen and the trunnion of above employing Fig. 1 form)
Stock oil injector head size 1.0 * 3
(adopting the stock oil injector of Fig. 5 form) with a stock oil injector
The cooling mode following current
(adopt quencher commonly used, Fig. 3)
Example two
This routine raw material oil mass is about 6 to 9 times of example one raw material oil mass.The nominal capacity of device is 2500 to 3200 tons/year.Oil fuel is ethylene bottom oil.Stock oil is mixing oil.The average technology oil consumption of product is 2.23 to 2.43 tons/ton.Oil product fundamental characteristics and product new process carbon black fundamental property are as follows.
Table 5 oil product fundamental characteristics:
The ethylene bottom oil mixing oil
Proportion d
20 41.03-1.06 1.05-1.10
Moisture content % 0.7-1.4 1.04-1.24
Lower heat value Kcal/kg 9200-9300 about 9000
BMCl 130-140 140-150
Example three
This example is for producing common process carbon black situation.Throughput is 3000 tons of/year intermediate super abrasion furnace blacks (ISAF).Under following stock oil and oil fuel quality, average technology oil consumption is about 2.33 tons of oil/ton carbon black.
Coal tar: proportion (d
20 4) 1.169, water content 0.88%.
Carbolineum: water content 0.38%, Lower heat value 8783Kcal/kg.
Oil fuel is all used coal tar; Stock oil is the mixing oil of coal tar and carbolineum, and ratio is 1: 1.
Products obtained therefrom is measured by the testing method of the listed correspondence of table 4 respectively, obtains DBP absorption value 1.08ml/g, iodine absorption value 119mg/g, CTAB specific surface area 112m
2/ g, pH value 7.82, toluene transmittance 98%, tinctorial strength 108(IRB
3Be 100).
Corresponding rubber physical mechanical property, measure by the GB3780.19-83 method of natural gum prescription:
Curing time divides 20 30
Tensile strength at yield, kgf/cm
2306 308
Elongation % 560 542
300% stretches kgf/cm surely
2134 144
Tension set % 33 34
Hardness (Shao Er A) 69 71
Proportion 1.13
Wear loss, ml/1.61km 0.177
Because the present invention has above advantage, add the present invention and be used for newly-built carbon black enterprise, especially for existing enterprise technological transformation aspect, pay off period short (generally needing the time about a year and a half), therefore, the present invention has very strong industrial applicibility.In other words, most of carbon black enterprise uses possibility of the present invention bigger, thereby more can produce positively effect.
Industrializing implementation the present invention, device capability is bigger.Its main points are: suit measures to local conditions to select for use oil fuel and stock oil; The preheating temperature essential factor condition of empty G﹠O and different; Compare with above-mentioned example, the primary combustion rate can suitably improve, and total burning can suitably reduce, and should improve stock oil and oil fuel ratio.
According to the present invention with above-mentioned industrializing implementation main points, the contriver expands device capability to 2500 tons/year to more than 2500 tons/year.The carbon black of producing has: the kinds such as part new process carbon black of N200 series and N300 series.The above-mentioned carbon black of producing, the conventional carbon black ISAF that produces on existing equipment with existing ordinary method compares, its oil consumption generally reduces more than 15% to 20%(or 20%), energy-saving effect or economic benefit are gratifying.
Table 4 product performance
Name of product: new process carbon black N339
Test event test value testing method
Iodine absorption value, mg/g 86.28 GB3780.1-83
The DBP absorption value, ml/g 1.21 GB3780.2-83
GB3780.3-83
DBP absorption value (compression sample), ml/g 0.972 GB3780.4-83
Tinctorial strength (IRB# 3 is 100), % 104.4 GB3780.6-83
The CTAB specific surface area, m
2/ g 98.65 GB3780.4-83
The toluene transmittance, % 72 GB3780.15-83
PH value 9.20 GB3780.7-83
Arithmetic mean diameter (electron microscopy), nm 24.1 off-colour industry institute methods
Median size (reflectivity method), nm/g 28.2 is the same
Specific surface area (electron microscopy), m
2/ g 118.2 is the same
In conjunction with glue content, % 32.7
Rubber physical mechanical property (natural gum prescription-GB3780.1 9-83)
Curing time divides 20 30
Proportion 1.13
Hardness, Shao Er (A) 71 74
Tensile strength at yield, Kgf/cm
2289 297
Elongation, % 503 507
300% tensile modulus, Kgf/cm
2148 149
Tension set, % 36 36
Wear loss, cc/1.61Km 0.19
Compression heats up (ancient special strange), and ℃ 51
Deflect be full of cracks (E type), ten thousand change 17
Time of scorch 7 ' 49 "
Curing time 9 ' 29 "
Table 6 product fundamental property
Production code member 1234
CTAB specific surface area m
2/ g 92 90 87 106
DBP absorption value ml/g 1.18 1.13 1.04 1.20
Iodine absorption value mg/g 92 94 91 108
Tinctorial strength (IRB3 is 100) 110 114 108 110
PH value 9.0 7.04 7.20 8.4
Toluene transmittance %-95 94-
Sulfuration the inside divides 20 30 20 30 20 30 20 30
Proportion 1.13 1.13 1.13 1.13
Hardness (Shao Er A) 71 74 70 73 71 73 73 75
Tensile strength at yield Kgf/cm
2302 296 317 321 306 312 306 300
Elongation % 552 496 560 520 572 492 552 524
300% stretches Kgf/cm surely
2151 168 147 178 149 172 147 163
Tension set % 32 32 34 35 35 36 34 36
Wear loss ml/1.61km 0.19 0.17 0.16 0.19
Screen resilience % 42 43
Compression heats up ℃ 51.5 57.5
Flex crack (E type) ten thousand changes 17 15
Time of scorch 7 ' 45 " 7 ' 15 "
Curing time 10 ' 07 " 9 ' 41 "
Annotate: the corresponding detection method of each performance is identical with table 4
Claims (17)
1, a kind of production sooty method comprises: adopt mink cell focus or lightweight oil to do fuel, liquid oil is a raw material; Fuel oil atomization synthesizes a system with air and burning with preheated air (being secondary air), and oil fuel and burning thereof, atomizing air are axially sent into roasting kiln (2) through fuel by fuel nozzle (1), produces the high temperature and high speed combustion gas; Stock oil is become 90 degree directions with filled circles column stream thigh along trunnion (5 to 7) axis by the stock oil injector, is ejected in the high temperature and high speed air-flow of the trunnion of flowing through (5 to 7); The carbon black smoke that forms through reaction zone is ejected into water smoke following current quick cooling in the Reaktionsofen (9) by quencher, makes the carbon black smoke temperature drop to 980 ℃ and following.
2, according to the described production sooty of claim 1 method, wherein the preheating temperature of fuel oil atomization and combustion air is 250 to 500 ℃, and this air with once or once based on forward spin flow, has only the small part direct current air in the oil fuel fuel nozzle.
3, according to claim 1 or 2 described production sooty methods, wherein the preheating temperature of fuel oil atomization or combustion air is preferably 350～470 ℃, and this air with once or once based on forward spin flow, has only the small part direct current air in the oil fuel fuel nozzle.
4, according to the described production sooty of claim 1 method, wherein oil fuel mainly is ethylene bottom oil or kin mink cell focus, and the Lower heat value of oil fuel is greater than 8000Kcal/kg, and input pressure is 3 to 20kgf/cm
2; Oil fuel by atomizing nozzle and air atomizing after, axially enter in the roasting kiln along roasting kiln, perfect combustion forms the high temperature swirling eddy, and its rate of combustion is 135% to 180%, the preheating temperature of heavy fuel oil (HFO) is 40 to 240 ℃, and light-weight fuel oil does not need preheating.
5, according to claim 1 or 4 described production sooty methods, oil fuel input pressure wherein is preferably 7 to 15kgf/cm
2, oil fuel by atomizing nozzle and air atomizing after, axially enter in the roasting kiln along roasting kiln, perfect combustion forms the high temperature swirling eddy, its rate of combustion preferably 140～150%; Preferably 50～150 ℃ of the preheating temperatures of heavy fuel oil (HFO).
6, according to the described production sooty of claim 1 method, wherein the high temperature swirling eddy of fuel combustion formation is 1480 to 1680 ℃ at the top temperature point of roasting kiln (2) inwall, the Mach 2 ship 0.3 to 0.8 in trunnion.
7, according to claim 1 or 6 described production sooty methods, wherein the high temperature swirling eddy that forms of fuel combustion is preferably 1500 to 1600 ℃ of the top temperature points of roasting kiln (2) inwall, the Mach number in trunnion preferably 0.4 to 0.7.
8, according to the described production sooty of claim 1 method, wherein stock oil is that the index of correlation is 120 to 170 ethylene bottom oil, carbolineum, perhaps their oil that is mixed, the perhaps oil that is mixed of they and coal tar system or petroleum system oil plant; The preheating temperature of stock oil is 60 to 240 ℃, and input pressure is 16 to 32kgf/cm
2; Total rate of combustion of stock oil and oil fuel is 20% to 50%; The penetration coefficient of stock oil oil column in trunnion is 40% to 70%; The kinetic energy of stock oil when the stock oil nozzle sprays is 40 to 160 with the high temperature and high speed air-flow at the ratio of the kinetic energy of trunnion oil spout point section.
9, according to claim 1 or 8 described production sooty methods, wherein the preheating temperature of stock oil is preferably 80 to 200 ℃, and input pressure is preferably 18 to 28kgf/cm
2; The kinetic energy of stock oil when the stock oil nozzle sprays and high temperature and high speed air-flow are at the ratio of the kinetic energy of trunnion oil spout point section preferably 60 to 130.
10, according to the described production sooty of claim 1 method, wherein the pressure reduction between roasting kiln (2) and Reaktionsofen (9) is 800 to 2400 millimeter water column; When producing N300 series, N200 series and N100 series new process carbon black, carbon black smoke is 0.015 to 0.055 second in Reaktionsofen (9) the high-temperature zone residence time; Produce conventional carbon black than produce the primary combustion rate that corresponding new process carbon black needs, total rate of combustion the two the rarest one higher, perhaps all need carbon black smoke long in the furnace high-temperature district residence time.
11, a kind of equipment of implementing the method for claim 1 comprises:
Oil fuel fuel nozzle (1) contains atomizing nozzle and axial admission formula swirler;
Roasting kiln (2), its upstream be round shape or reamer angle be 80 the degree to 120 the degree expansion shapes, inner stage casing is a round shape, the downstream be contract cone angle be 20 the degree to 35 the degree contraction shapes;
Trunnion (5 to 7) contains contraction section (5), straight section (6), expansion segment (7), and total length is 500 to 1200 millimeters, is respectively equipped with adapter (5a, 6a, 7a) on each section;
Reaktionsofen (9), inner upstream are gradually expanded form, become flatly to be provided with 1 to 4 quencher with ground along the Reaktionsofen axis;
The flame retardant coating (3) of roasting kiln (2) and Reaktionsofen (9) is made with corundum matter or the refractory materials that is better than corundum matter.
12, according to the described production sooty of claim 11 equipment, fuel nozzle wherein (1) comprises water jacket (13), water inlet pipe (13a), axial admission formula swirler (15), swirler pull bar web member (14), wind cover (17), fuel oil atomization nozzle (18), fueling oil hose (20) and plug sleeve (19); Water jacket (13) is the cover tubular, and water inlet pipe (13a) is deep between inner/outer tube near the water jacket downstream end; Be provided with screw blade between the inner/outer tube of axial admission formula swirler (15), the opacity of this blade is 1.0 to 1.9, and blade mean obliquity 30 degree are to 60 degree; The swirl strength of swirler is 1.3 to 3.6; Swirler blades is provided with the prestige fire tube or the fire hole of 20 to 30 millimeters of internal diameters; The pull bar web member (14) that same swirler (15) links to each other can axially spur swirler along fueling oil hose (20) and fuel oil burner (18); Wind cover (17) embeds in the inner core of water jacket (13), and the internal diameter and the swirler downstream urceolus external diameter of wind cover cylindrical section adapt, and the upstream extremity of wind cover is inner for shrinking shape; Fuel oil atomization nozzle (18) is an atomizing nozzle commonly used; Fueling oil hose (20) is the vaporware that is connected with fuel oil burner; Plug sleeve (19) links to each other with fueling oil hose, and circular diameter is a bit larger tham the external diameter of fueling oil hose in it, and outside diameter is a bit larger tham the swirler inner diameter of steel flue.
13, according to claim 11 or 12 described production sooty equipment,
Wherein be provided with screw blade between the inner/outer tube of the axial admission formula swirler (15) of fuel nozzle (1), the opacity of this blade preferably 1.1 to 1.7, blade mean obliquity preferably 40 degree to 50 degree, the swirl strength of swirler preferably 1.6 to 2.1.
14, according to the described production sooty of claim 11 equipment, wherein roasting kiln length is 3 to 6 with the ratio of stage casing barrel bore.
15, according to the described production sooty of claim 11 equipment, wherein trunnion is a water jacket formula steel construction; Contraction section (5) interconnects with flange with roasting kiln (2) downstream end; Contraction section is taken over (5a) and is become 90 degree direction settings with this section axis, and evenly is provided with 1 to 4 along this section circumference; The trunnion straight section is a circumferential, and its adapter (6a) becomes 90 degree direction settings with trunnion straight section axis, and evenly is provided with 1 to 6 along circumference; Expansion segment (7) is a gradually expanded form, its reamer angle be 3 degree to 7 degree, the adapter of this section (7a) becomes 90 to spend the direction settings with this section axis, and evenly is provided with 1 to 6 along circumference.
16, according to claim 11 or 15 described production sooty equipment, wherein three of trunnion sections total lengths are preferably 600～800 millimeters.
17, according to the described production sooty of claim 11 equipment, reamer angle, upstream is that 80 degree are to 120 degree within the Reaktionsofen wherein (9); Reaktionsofen length and its inner cylinder section diameter ratio are 3 to 10; The spout hole (9a) that quencher (10) is installed becomes 90 degree with the Reaktionsofen axis; The Reaktionsofen upstream extremity is connected with trunnion expansion segment (7) downstream end (promptly expanding terminal).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86104576A CN1014150B (en) | 1986-07-03 | 1986-07-03 | Method and apparatus for carbon black prodn. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86104576A CN1014150B (en) | 1986-07-03 | 1986-07-03 | Method and apparatus for carbon black prodn. |
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| Publication Number | Publication Date |
|---|---|
| CN86104576A CN86104576A (en) | 1988-01-27 |
| CN1014150B true CN1014150B (en) | 1991-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86104576A Expired CN1014150B (en) | 1986-07-03 | 1986-07-03 | Method and apparatus for carbon black prodn. |
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| Country | Link |
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| CN (1) | CN1014150B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN101625128B (en) * | 2009-06-09 | 2011-04-27 | 宁波德泰化学有限公司 | Air preheater and production process suitable for same |
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| CN102286221B (en) * | 2011-06-24 | 2012-11-14 | 龙星化工股份有限公司 | Hard carbon black reaction furnace |
| CN102850826B (en) * | 2012-09-14 | 2014-08-20 | 山西绛县申王化工有限公司 | Preparation process of pigment carbon black, and combustion furnace thereof |
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| CN110330816A (en) * | 2019-07-26 | 2019-10-15 | 邯郸黑猫炭黑有限责任公司 | A kind of formula oil and preparation method thereof for production of carbon black |
| CN110684376A (en) * | 2019-10-18 | 2020-01-14 | 邯郸黑猫炭黑有限责任公司 | Method for producing N375 carbon black by mixed oil |
| CN112048196B (en) * | 2020-08-26 | 2022-02-22 | 茂名环星新材料股份有限公司 | Carbon black and production process thereof |
-
1986
- 1986-07-03 CN CN86104576A patent/CN1014150B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625128B (en) * | 2009-06-09 | 2011-04-27 | 宁波德泰化学有限公司 | Air preheater and production process suitable for same |
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| CN86104576A (en) | 1988-01-27 |
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