CN1014151B - Process and equipment for prodn. of soft carbon black - Google Patents
Process and equipment for prodn. of soft carbon blackInfo
- Publication number
- CN1014151B CN1014151B CN86106499A CN86106499A CN1014151B CN 1014151 B CN1014151 B CN 1014151B CN 86106499 A CN86106499 A CN 86106499A CN 86106499 A CN86106499 A CN 86106499A CN 1014151 B CN1014151 B CN 1014151B
- Authority
- CN
- China
- Prior art keywords
- oil
- fuel
- reaktionsofen
- carbon black
- degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000006229 carbon black Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229910021384 soft carbon Inorganic materials 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 claims abstract description 24
- 239000000295 fuel oil Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 71
- 238000004519 manufacturing process Methods 0.000 claims description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000000889 atomisation Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 12
- 239000003345 natural gas Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 235000009508 confectionery Nutrition 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 6
- 241000772415 Neovison vison Species 0.000 claims description 5
- 239000010431 corundum Substances 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 239000011280 coal tar Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 3
- 239000010763 heavy fuel oil Substances 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 claims description 3
- -1 carbolineum Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000000153 supplemental effect Effects 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract 1
- 239000006232 furnace black Substances 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The present invention relates to a process and equipment which are used for producing soft carbon black. Either gaseous fuel or liquid fuel can be used as fuel, and heavy oil is mainly used as the fuel; fuel oil and rotating air enter a combustion furnace in the axial direction after the fuel oil is atomized via a nozzle, and sprayed in the direction forming an angle of 45 to 90 degrees with a hollow throat axis; supplemental air and supplemental combustible gas are introduced along the tangential or radial direction of a reaction furnace, and carbon black fumes are quickly cooled downstream below 980 DEG C by water fog. Generally, the process and the equipment are adopted to product various kinds of new technological soft carbon black and conventional soft carbon black; compared with the soft carbon black produced by a conventional process, the soft carbon black produced by the process can save 10 to 30% of energy.
Description
To be hydro carbons generate through partial oxidation, cracking carbon black, mainly as rubber reinforcing filler, weighting agent.The present invention relates to the improvement production method and the corresponding apparatus of soft carbon.
Existing oven process is produced soft carbon, normally air, stock oil directly is added in the Reaktionsofen, is being higher than incomplete combustion under 1000 ℃ the temperature, and cracking generates carbon black.Produce not only energy consumption height of soft carbon with this mode, and often carry hard charcoal secretly in the carbon black and influence use properties.Perhaps, use fuelled with natural gas, in Reaktionsofen, add Sweet natural gas and air in order to regulate the sooty structure of producing.Though the carbon black of producing with this mode has the low and few advantage of hard carbon of energy consumption, there are following masty problems in this method:
Roasting kiln is with geseous fuel and not only originate difficultly as the geseous fuel (or lightweight oil) of hydrocarbon in the postreaction stove, and costs an arm and a leg.
The heat load intensity of roasting kiln, Reaktionsofen is generally all than higher, and flame retardant coating need be made of special refractory materials, but such refractory materials source difficulty, the price height, and work-ing life is short.Tangential introducing Reaktionsofen is higher as geseous fuel (natural gas etc.) temperature of combustion of replenishing hydrocarbon, makes the Reaktionsofen inner lining refractory be easy to damage.Not only the trunnion heat load intensity is higher, and burning gas even adopt special refractory, is also damaged very fast to the especially severe that washes away of trunnion.
The invention solves these problems.Its main points are the fuel nozzle that adopts axial admission formula swirler and low ballast carrier atomizing two-fluid spray nozzle to form.This fuel nozzle not only can the various heavy fuel oil (HFO)s of torch firing, as heavy oil, coal tar wet goods, but also torch firing lightweight oil and geseous fuel.Help industrial applications of the present invention.
The aftercombustion gas that Reaktionsofen of the present invention is introduced not only can be Sweet natural gas, also can be to have separated sooty tail gas or other inflammable gas in the production of carbon black.This not only makes the present invention can be in all carbon black plant's widespread uses, and the Reaktionsofen refractory materials is not fragile.
The trunnion that the present invention adopts is improved water jacket formula steel construction, and it has simple in structure easily manufactured, long service life, and the raw material oil nozzle is difficult for advantages such as coking and blocking.
Roasting kiln of the present invention and Reaktionsofen liner adopt the high-quality refractory material such as the corundum metric system to make.The raw material oil nozzle is known solid column injection stream thigh nozzle.Adopt the method for following current cooling carbon black smoke in the known Reaktionsofen, heat-eliminating medium is a water, and the water spouting nozzle of forming quencher is the atomizing nozzle of using always.
Reference USP4105750
An object of the present invention is to provide a kind of method of producing carbon black, the method of namely producing soft new process carbon black with the new technology route of heavy liquid fuel (also can with light liquid fuel and gaseous fuel) and feedstock oil, introduce carbon black process tail gas (also can be other gaseous fuel and oxidant) to reacting furnace, control, improvement, adjusting carbon black performance. The new process carbon black good quality of producing with this method, and save mass energy.
Another object of the present invention provides the improved production method of a kind of conventional soft carbon, improves carbon black products quality and economic benefit.
Further object of the present invention provides one group for using the needed key equipment of the inventive method. This equipment comprises combustion furnace and corresponding axially burner, and improved reacting furnace and aftercombustion gas are introduced section, improved trunnion and known feedstock oil injector and quencher.
Another object of the present invention is according to the viewpoint of invention and adopts key equipment of the present invention, produces multiple carbon black products.
Other purpose of the present invention and feature can be recognized from following narration.
Can produce any new process carbon black or any corresponding conventional carbon black in N600, N500, the N700 series with present method.Also can produce other serial carbon black products with present method.
The method summary:
According to the present invention, oil fuel (or gas) generates the high-temp combustion air-flow in the roasting kiln internal combustion, and the reducing of flowing through of this high-temperature gas is quickened, the stock oil stream of going in reducing place and high-velocity jet strand mixes, atomizing, enter Reaktionsofen, mix with the aftercombustion gas of introducing Reaktionsofen again, be cracked into carbon black.
Fuel can be liquid fuel, also can be geseous fuel.Liquid fuel can be a lightweight oil, also can be mink cell focus, as similar oil product such as ethylene bottom oil, heavy oil.The Lower heat value of fuel should be greater than 2.93 * 10
7J/Kg is more preferably greater than 3.56 * 10
7J/Kg.When making fuel, should be preheating to 85 ℃ to 250 ℃ to oil fuel, be preferably 90 ℃ to 160 ℃ with mink cell focus.Can not preheating with light-weight fuel oil.Input pressure is 19.6 * 10
-2To 58.8 * 10
-2MPa, it is 24.5 * 10 that the atomization gas air inlet is pressed
-2To 78.4 * 10
-2MPa is preferably 34.3 * 10
-2To 68.6 * 10
-2MPa.Atomization gas can be pressurized air, steam or other gas, and the weight ratio of atomization gas and oil fuel is 0.2 to 0.6, and oil fuel is at first atomized by two-fluid spray nozzle, by the rotary air atomizing from swirler, axially enters roasting kiln along roasting kiln again.
The air that enters roasting kiln is through preheating, and its preheating temperature is 250 ℃ to 600 ℃, preferably 350 ℃ to 450 ℃.Air forms the high speed rotating air-flow through the swirler of fuel nozzle, and the primary atomization mist of oil that atomizes with double fluid atomization nozzle meets, and fuel is carried out secondary-atomizing.Gas velocity in the annular space of fuel usefulness double fluid atomization nozzle downstream end and wind inner room is greater than 70 meter per seconds, and the gas velocity of wind cover downstream end is greater than 50 meter per seconds.The primary combustion rate of oil fuel is 130% to 200%, preferably 140% to 180%.Roasting kiln inwall top temperature should not be higher than 1680 ℃, is preferably 1450 ℃ to 1620 ℃.The corected speed of combustion gas flowing in trunnion is 0.15 to 0.50, preferably 0.20 to 0.35.Pressure reduction between roasting kiln and the Reaktionsofen is 2.94 * 10
3To 1.176 * 10
4Pa.
According to the present invention, stock oil can adopt ethylene bottom oil, heavy oil, carbolineum, coal tar, the single oil product of anticorrosion wet goods or the oil that is mixed, and the index of correlation of stock oil is 85 to 175, and carbon content should be greater than 80%, and bituminous matter and carbon residue content should lack as far as possible.The preheating temperature of stock oil is 80 ℃ to 250 ℃, is preferably 90 ℃ to 180 ℃, and it is 49 * 10 that oil-feed is pressed
-2To 156.8 * 10
-2MPa is preferably 68.6 * 10
-2To 117.6 * 10
-2MPa.Stock oil injection stream thigh is solid column, becomes 45 degree to 90 degree to spray in the high temperature gas flow of trunnion along the trunnion axis.The penetration coefficient of raw material oil column in trunnion is 25% to 70%.The high temperature gas flow of the kinetic energy of stock oil when oil burner nozzle ejects and the trunnion of flowing through is 30 to 150 at the ratio of the kinetic energy of trunnion oil spout point section (hydraulic pneumatic can than), preferably 50 to 110.
According to the present invention, enter improved Reaktionsofen from the mixed airflow of effusive high-temp combustion gas of trunnion and stock oil.Additional air and additional inflammable gas are introduced in an appropriate location at Reaktionsofen.Replenish air capacity for producing 0～30% of carbon black required air total amount, be preferably 8% to 20%, replenish the stoichiometric ratio 70% to 130% of air and additional combustible gas.Additional combustible gas is that calorific value is greater than 2.93 * 10
6J/NM
3Any inflammable gas.Replenishing air and combustible gas can or vertically introduce from the tangential, peripheral of Reaktionsofen.The ratio of the air capacity that amount of actual air for combustion and fuel, stock oil and additional combustible gas perfect combustion are required.Be called total rate of combustion.The total rate of combustion of carbon black process of the present invention is 20% to 45%.
According to the present invention, carbon black smoke is below water quick cooling to 980 that the Reaktionsofen afterbody is sprayed into ℃, to stop the carbon black reaction.Quenched water is to be pressurized to 78.4 * 10 by water pump
-2MPa to 156.8 * 10
-2MPa is ejected in the Reaktionsofen through quencher, and the spray direction of quenched water flows to consistent with carbon black smoke in the Reaktionsofen.Carbon black smoke in the Reaktionsofen is 0.15 second to 1 second in the high-temperature zone residence time, preferably 0.35 second to 0.7 second.
The powdery carbon black adopts known method to collect and granulation.
Equipment summary and description of drawings
This accompanying drawing is the key equipment sketch in total inventive concept.For the ease of understanding the present invention, be summarized as follows with regard to accompanying drawing:
Fig. 1 is the key equipment sketch.Fig. 2 is the cross-sectional of A-A shown in Fig. 1.Fig. 3 is the B-B cross-sectional among Fig. 1.Fig. 4 is a fuel fuel nozzle sketch.
In Fig. 1, (1) is the fuel injector (see figure 4).(2) be roasting kiln, its upstream is expansion shape or round shape, and the reamer angle of expansion shape is that 85 degree are to 120 degree.The roasting kiln stage casing is a round shape, and tract is for shrinking shape, and the cone angle that contracts is that 20 degree are to 30 degree, in order to adapting with trunnion contraction section (5).The ratio of roasting kiln length and cylindrical section internal diameter is 3 to 5.5, and (3) are roasting kiln flame retardant coating and thermal insulation layer, and innermost layer is with corundum matter or be better than the corundum based refractory materials manufacturing, and (4) are the roasting kiln steel shell.(5) be the trunnion contraction section, its upstream extremity and roasting kiln (2) the downstream end cone angle that contracts adapts, and interconnects with flange.5a is that the trunnion contraction section is taken over, and is used for sampling or pressure measurement, and it becomes 90 degree direction settings with the trunnion axis.(6) be the trunnion straight section, its upstream extremity is connected with flange with trunnion contraction section downstream end.(7) be the trunnion expansion segment, inner core is a gradually expanded form, and the reamer angle is that 3 degree are to 10 degree.6a and 7a are respectively that trunnion straight section and expansion segment are taken over, and they become 45 degree to 90 degree direction settings with the trunnion axis, and along the circumferential direction each evenly is provided with 1 to 6, as spraying into stock oil.The trunnion total length is 600 millimeters to 1000 millimeters.Trunnion is with known carbon steel or stainless steel, high temperature steel manufacturing.(8) be known stock oil injector, can be provided with 1 to 6 according to throughput.(9) be improved Reaktionsofen, this stove upstream comprises an expansion segment and a straight section, and the reamer angle of expansion segment is that 80 degree are to 120 degree.Straight section is a round shape.The Reaktionsofen stage casing is to replenish air and additional combustible gas adding section, comprises an expansion segment, a straight section and a converging transition.The reamer angle of this expansion segment be 120 degree to 180 degree, the cone angle that contracts of converging transition be 60 degree to 120 degree, this straight section is a round shape, is provided with adapters (9a) and (9b) in its tangential direction, is used for additional air and fuel gas.The Reaktionsofen downstream is a round shape straight section, radially is provided with adapter (14a), (14b), (14c), (14d) at this segment trailer, is used for inserting quencher.The Reaktionsofen total length is 10 to 30 with Reaktionsofen downstream cylindrical section diameter ratio, preferably 12 to 24.(10) be the quencher of using always.Such quencher can have 1 to 4 on demand.(11) be the trunnion vacuum doughunt, be full of water coolant (cold water that do not draw among figure adapter) in it.(12) be the trunnion urceolus.(13) be Reaktionsofen flame retardant coating and thermal insulation layer.(14) be the Reaktionsofen steel shell.
In Fig. 2, the adapter 6a of trunnion straight section is connected with known stock oil injector (8).(only drawing among the figure one).
In Fig. 3, Reaktionsofen furnace shell adapter 9a and 9b open the round shape part in the stage casing of Reaktionsofen, replenish air and postcombustion gas and tangentially enter Reaktionsofen in this mixing.
In Fig. 4, (15) are swirlers, and it can pass through pull bar fitting (14), move axially along fuel tube (20), regulate the relative position of swirler (15) and wind cover (17) with this.The swirler swirl strength is 1.3 to 3.0, available carbon steel or stainless steel manufacturing.Be to hope the fire tube (15a), an end is welded in by on the swirler spinning disk (16) of perforate, and the other end is equipped with a quartz glass plate in order to observe roasting kiln and trunnion working condition.The blade mean obliquity of swirler be 30 the degree to 60 the degree, preferably 35 the degree to 45 the degree, the blade opacity is 1.0 to 1.9, is preferably 1.2 to 1.6.(17) be the wind cover, with high temperature steel or carbon steel manufacturing.(18) be double fluid atomization nozzle, interior pipe is fuel-supply pipe (20), and outer tube is an atomizing carrier transfer lime (21).Double fluid atomization nozzle (18) downstream end and swirler (15) downstream end spacing are 20 millimeters to 100 millimeters, and overlapping the downstream end spacing with wind should be greater than 25 millimeter.(19) be plug sleeve, main effect is the relative position that is used for regulating nozzle (18) and swirler (15).(23) being the steel water jacket, (23a) is the water jacket water inlet pipe, and this pipe is deep into the downstream end near water jacket (23).
According to the present invention, adopting blast is 4.9 * 10
4The blower fan of Pa can satisfy the production needs.Raw oil pump and oil-fuel pump are general Y type oil pump.
Advantage of the present invention and positively effect thereof:
First advantage of the present invention is a large amount of save energy.For example, novel process N630, N642, N539 carbon black and the conventional N660 carbon black that goes out produced according to the invention, than with the conventional carbon black of ordinary method production homologous series on conventional equipment such as N660 or N550, carbon black oil consumption per ton will hang down 15% to 30%, even so that more.
Second advantage of the present invention is the restriction that is not subjected to fuel, and it is available gas fuel both, also available liquid fuel; The both available incendiary lightweight oil that is easy to, also available mink cell focus that is difficult for perfect combustion such as heavy oil, coal tar wet goods.This facilitates all carbon black plants and implements the present invention.
The 3rd advantage of the present invention is that the product of producing has diversity.For example, can produce the new process carbon black and the conventional carbon black of soft carbon N500, N600, N700 series according to the present invention.Also can produce these three series other carbon black products in addition.
The 4th advantage of the present invention is that the carbon black products of the N500, the N600 that produce, N700 series is superior in quality, significantly reduces than " hard carbon " in the carbon black of producing with ordinary method.And some performance that can regulate product on demand, as DBP adsorptive value etc.
The 5th advantage of the present invention is the key equipment conformability, and less demanding to equipment material, device lifetime is long, and device structure is simpler.
Other advantage of the present invention can obviously be found out from top narration and following example.
Implement example of the present invention:
About 450 tons/year of testing apparatus nominal capacities.Those of ordinary skill in the field can reproduce or implement the present invention.Device parameter sees Table 1.The oil fuel of example and stock oil all adopt ethylene bottom oil, and its character is proportion (d
20 4) 1.042, viscosity (E
80 20) 1.84, water content only has vestige, Lower heat value 3.96 * 10
7J/Kg, the index of correlation is about 140.Table 2 is 5 embodiment processing parameters and product performance.Table 3 is to replenish air and Sweet natural gas and do not replenish processing parameter and product performance examples comparative under air and the Sweet natural gas situation to Reaktionsofen, and table 4 is product performance testing method in table 2 and the table 3.(table 1, table 2, table 3, table 4 are seen the literary composition back).
Because the present invention has above advantage, utilize the next newly-built carbon black enterprise of the present invention or existing soft carbon production line is undergone technological transformation investment recovery time short (generally needing a year) to a year and a half.Add most of carbon black enterprise and use possibility of the present invention, therefore, the present invention has the wide industrial practical value.
Calculated examples
Design kind: N660 carbon black
Main technologic parameters:
Primary air flow 2160NM
3/ h, atomization air flow 47NM
3/ h, oil fuel flow 137Kg/h, stock oil flow 672kg/h replenishes air flow quantity 375NM
3/ h, tail gas add-on 315NM
3/ h(tail gas calorific value 3.36 * 10
6J/NM
3), additive (K
+) 25ppm, trunnion corected speed 0.293, carbon black output 416.67Kg/h, year production carbon black ability 3000T.
The Reaktionsofen principal dimension:
Combustion chamber diameter 500mm, a trunnion oiling section diameter 148mm, reaction chamber upstream straight section diameter 550mm, reaction chamber downstream straight section diameter 640mm, the chilling position is apart from stock oil nozzle downstream 9000mm.
Table 1 device parameter (referring to accompanying drawing)
Swirler swirl strength 1.7～20
About 45 degree of swirler blades mean obliquity
Swirl vane opacity about 1.65
Roasting kiln length and internal diameter ratio 3.4～4.0
Reaktionsofen length and internal diameter ratio 5.5～10
Roasting kiln, trunnion internal diameter ratio 2.5～5
Stock oil injector head size (mm) 1.0 * 3
Cooling mode following current water-cooled
Table 4 product performance testing method
Iodine absorption value GB3780. 1-83
DBP adsorptive value GB3780. 2-83
Ctab surface amasss GB3780. 4-83
PH value GB3780. 7-83
Rubber physical mechanical property GB3780. 19-83
Table 2 processing parameter and product performance
Processing parameter: instance number 12345
The fuel oil mass, L/h 30 30.5 35 30 31
The raw material oil mass, L/h 92 91.5 89 90 92
Air capacity, NM
3/ h 540 540 540 530 540
Additive (KCl), ppm 120 60 60 60 60
Preheating Temperature for Fuel Oil, ℃ 110 110 100 115 110
The fuel oil preheating temperature, ℃ 120 130 120 170 120
Air preheating temperature, ℃ 340 350 350 400 345
The oil fuel oil-feed is pressed, and 10
-2MPa 29.4 44.1 39.2 44.1 49
The stock oil oil-feed is pressed, and 10
-2MPa 62.7 66.6 58.8 49 78.4
Chilling hydraulic pressure, 10
-2MPa 88.2 98 98 98 98
Primary fuel rate 1.76 1.73 1.51 1.73 1.70
Total fuel rate 0.43 0.43 0.42 0.43 0.43
Carbon black output, Kg/h 50 54.4 47.5 52.5 55
The product chemical property:
Iodine absorption value, g/Kg 35.0 33.1 31.1 30.3 39.5
The DBP absorption value, Cm
3/ g 0.61 1.05 1.21 0.86 0.95
Ctab surface is long-pending, m
2/ g-36.3-36.5 45.6
PH value 7.15 8.05 8.86 8.49 7.60
The product rubber physical mechanical property:
Curing time, 30 minutes
Shore a hardness 56 60 62 59 63
Tensile strength at yield, 10
-2MPa 2,920 2,842 2,754 2,783 2548
Elongation, % 660 604 564 630 560
300% tensile modulus, 10
-2MPa 715 882 1,068 911 1049
Tension set, % 34 30 20 26 28
Curing time, 45 minutes
Shore a hardness, 10
-2MPa 57 61 64 61 64
Tensile strength at yield, 10
-2MPa 2,660 2,656 2,607 2,577 2754
Elongation, % 608 570 524 588 552
300% tensile modulus, 10
-2MPa 735 980 1,156 990 1235
Tension set, % 34 30 24 28 28
Table 3 replenishes and the processing parameter and the product performance contrast that do not replenish under air, the Sweet natural gas situation to Reaktionsofen
Example does not replenish
The fuel oil mass, L/h 30 29
The raw material oil mass, L/h 90 88
(Fuel Furnace) air capacity, M
3/ h 540 520
(Reaktionsofen) air capacity, M
3/ h 30
Amount of natural gas, M
3/ h 5
Additive capacity (KCl), ppm 80 80
Preheating Temperature for Fuel Oil, ℃ 110 117
The fuel oil preheating temperature, ℃ 120 115
Air preheating temperature, ℃ 350 390
The oil fuel oil-feed is pressed, and 10
-2MPa 49 49
The stock oil oil-feed is pressed, and 10
-2MPa 63.7 56.8
Primary combustion rate 1.76 1.75
Total rate of combustion 0.44 0.44
Carbon black output, Kg/h 60 55
Product performance:
1. chemical property
Iodine absorption value, g/Kg 35.5 36.5
The DBP absorption value, cm
3/ g 0.98 0.73
The CTAB specific surface area, m
2/ g 46.8 8.5
PH value
2. rubber physical mechanical property
Curing time, 30 minutes
Shore a hardness/56
Tensile strength at yield, 10
-2MPa 2,754 2901
Elongation, % 648 676
300% tensile modulus, 10
-2MPa 892 911
Tension set, % 26 26
Curing time, 45 minutes
Shore a hardness/58
Tensile strength at yield, 10
-2MPa 2,636 2754
Elongation, % 588 636
300% tensile modulus, 10
-2MPa 1,000 911
Tension set, % 26 28
As can be seen from Table 3, behind Reaktionsofen supplemental natural gas and air, the structure of carbon black products reduces more remarkable.
Claims (20)
1, a kind of method of producing soft carbon, comprise: make fuel with geseous fuel or lightweight oil or with mink cell focus, liquid oil is a raw material, fuel and fuel combustion, atomizing usefulness gas all axially or axially and are tangentially imported roasting kiln (2) through fuel nozzle (1) from roasting kiln (2), produce the high temperature and high speed combustion gas; Stock oil becomes 45 degree to 90 degree directions with filled circles column stream thigh along trunnion (6,7) axis, is ejected in the high temperature and high speed gas-flow of the reducing of flowing through; The carbon black smoke that forms through reaction mixes mutually with the additional combustible gas of Reaktionsofen (9) introducing and air and the carbon black smoke that forms, below water quick cooling to 980 that Reaktionsofen (9) afterbody is sprayed into ℃; Replenish the tangential or periphery introducing from Reaktionsofen (9) of air and combustible gas, additional combustible gas can be a Sweet natural gas, also can be carbon black tail gas or other inflammable gas in the carbon black process.
2, according to the method for the described production soft carbon of claim 1, wherein fuel combustion is 250 ℃ to 600 ℃ with the preheating of air temperature, gas velocity in the annular space between fuel usefulness double fluid atomization nozzle (18) downstream end and wind cover (17) is greater than 70 meter per seconds, and the gas velocity of wind cover downstream end is greater than 50 meter per seconds.
3, according to the method for claim 1 or 2 described production soft carbons, wherein fuel combustion usefulness preheating of air temperature is preferably 350 ℃ to 450 ℃.
4, according to the method for the described production soft carbon of claim 1, use therein fuel mainly is heavy oil or mink cell focus, and the Lower heat value of fuel is greater than 2.93 * 10
7J/Kg, when making fuel with oil, it is 19.6 * 10 that oil-feed is pressed
-2MPa to 78.4 * 10
-2MPa, oil fuel by double fluid atomization nozzle and combustion air secondary-atomizing after, axially enter in the roasting kiln along roasting kiln, perfect combustion forms the high temperature swirling eddy, its rate of combustion is 130% to 200%, and the preheating temperature of heavy fuel oil (HFO) is 85 ℃ to 250 ℃, and light-weight fuel oil can not preheating, double fluid atomization nozzle can be pressurized air, steam or other gas with atomizing gas, and atomization gas and oil fuel weight ratio are 0.2 to 0.6.
5, according to the method for claim 1 or 4 described production soft carbons, when making fuel with oil in the base, oil-feed presses preferably 29.4 * 10
-2MPa to 58.8 * 10
-2MPa, oil fuel perfect combustion forms the high temperature swirling eddy, its rate of combustion preferably 140% to 180%, preferably 90 ℃ to 160 ℃ of the preheating temperatures of heavy fuel oil (HFO).
6, according to the method for claim 4 or 5 described production soft carbons, high temperature swirling eddy wherein is not more than 1680 ℃ in the top temperature of roasting kiln (2) inwall, and the corected speed of this air-flow in trunnion is 0.15 to 0.50.
7, according to the method for claim 4 or 5 described production soft carbons, high temperature swirling eddy wherein is preferably 1450 ℃ to 1620 ℃ of the top temperatures of roasting kiln (2) inwall, the corected speed of this air-flow in trunnion preferably 0.20 to 0.35.
8, according to the method for the described production soft carbon of claim 1, use therein stock oil is that the index of correlation is 85 to 175 heavy oil, ethylene bottom oil, carbolineum, coal tar, perhaps their oil that is mixed, the preheating temperature of stock oil is 80 ℃ to 250 ℃, it is 49 * 10 that oil-feed is pressed
-2MPa to 156.8 * 10
-2MPa, total rate of combustion of the stock oil that uses, burning furnace fuel and Reaktionsofen postcombustion is 20% to 45%, the penetration coefficient of raw material oil column in trunnion is 25% to 70%, and the kinetic energy of stock oil when the raw material oil nozzle sprays is 30 to 150 with high temperature and high speed gas at the ratio of the kinetic energy of trunnion oil spout point section.
9, according to the method for claim 1 or 8 described production soft carbons, the preheating temperature of use therein stock oil is preferably 90 ℃ to 180 ℃, and oil-feed is pressed and is preferably 68.6 * 10
-2MPa to 117.6 * 10
-2MPa, the stock oil kinetic energy when the raw material oil nozzle sprays and high temperature and high speed gas are at the ratio of the kinetic energy of trunnion oil spout point section preferably 50 to 100.
10, according to the method for the described production soft carbon of claim 1, wherein the pressure reduction between roasting kiln (2) and Reaktionsofen (9) is 2.94 * 10
3Pa to 1.176 * 10
4A, when producing N500, N600, N700 series new process carbon black and conventional carbon black, carbon black smoke is 0.15 second to 1 second in the Reaktionsofen high-temperature zone residence time.
11, according to the method for claim 1 or 10 described production soft carbons, wherein when producing N500, N600, N700 series new process carbon black and conventional carbon black, carbon black smoke was preferably 0.35 to the 0.7 second Reaktionsofen high-temperature zone residence time.
12, according to the method for the described production soft carbon of claim 1, wherein replenish air and combustible gas in the stage casing of Reaktionsofen, replenish air capacity for producing 0～30% of carbon black required air total amount, the combustible gas that replenishes can be that calorific value is greater than 2.93 * 10
6J/NM
3Any inflammable gas, the stoichiometric ratio of replenishing air and combustible gas is 70% to 130%, replenishes air and combustible gas and can or vertically introduce from tangential, the periphery of Reaktionsofen.
13, according to the method for claim 1 or 12 described production soft carbons, the additional air capacity that wherein replenishes Reaktionsofen is preferably produces 8% to 20 of carbon black required air total amount.
14, a kind of equipment that is used to produce soft carbon comprises:
Fuel fuel nozzle (1) contains axial admission formula swirler and low ballast carrier atomizing two-fluid spray nozzle;
Roasting kiln (2), its inner upstream be the reamer angle be 85 the degree to 120 the degree expansion segments, the stage casing is a round shape, its downstream be contract cone angle be 20 the degree to 30 the degree contraction shapes;
Trunnion (5 to 7), it is water jacket formula steel construction, contain contraction section (5), straight section (6), expansion segment (7), total length is 600 to 1000 millimeters, straight section (6) is gone up with this section axis and is become 45 degree to 90 degree directions adapter (6a) to be set, and expansion segment (7) is gone up with this section axis and become 45 degree to 90 degree directions that adapter (7a) is set;
Reaktionsofen (9) contains Upstream section, introduces the stage casing, the tract that replenish air and burning gas;
The internal layer flame retardant coating (13) of roasting kiln and Reaktionsofen is with the corundum class or be better than the refractory materials manufacturing of corundum.
15, equipment according to the described production soft carbon of claim 14, wherein fuel nozzle (1) contains axial admission formula swirler (15), wind cover (17), double fluid atomization nozzle (18), fuel tube (20), atomizing tracheae (21) and plug sleeve (19), the opacity of the swirl vane of axial admission formula swirler (15) is 1.0 to 1.9, the blade mean obliquity is that 30 degree are to 60 degree, the swirl strength of swirler is 1.3 to 3.0, swirler blades is provided with the prestige fire tube of 20 to 30 millimeters of internal diameters, the pull bar web member (22) that same swirler (15) is connected can make swirler along the atomizing tracheae (21) move axially double fluid atomization nozzle (18), swirler (15), fuel tube (20), atomizing tracheae (21) cooperatively interacts by same central axis.
16, according to the equipment of claim 14 or 15 described production soft carbons, the opacity of the swirl vane of wherein said axial admission formula swirler (15) is preferably 1.2 to 1.6, this blade mean obliquity preferably 35 degree to 45 degree, the swirl strength of swirler preferably 1.4 to 2.0.
17, according to the equipment of the described production soft carbon of claim 14, wherein roasting kiln length and cylindrical section diameter ratio are 3 to 3.5.
18, according to the equipment of the described production soft carbon of claim 14, wherein the adapter (6a) of trunnion straight section (6) evenly is provided with 1 to 6 along this section circumference, and the adapter (7a) of expansion segment (7) evenly is provided with 1 to 6 along this section circumference.
19, according to the equipment of the described production soft carbon of claim 14, wherein an expansion segment and a straight section are contained in the upper reaches of Reaktionsofen (9), and the reamer angle of this expansion segment is that 80 degree are to 120 degree; An expansion segment, a straight section and a converging transition are contained in the stage casing of Reaktionsofen (9), the reamer angle of this expansion segment is that 120 degree are to 180 degree, the cone angle that contracts of converging transition is that 60 degree are to 120 degree, this straight section is a round shape, in its tangential direction the adapter (9a) that replenishes air and burning gas and (9b) is set; Reaktionsofen (9) downstream is a round shape straight section, radially is provided with adapter (14a), (14b), (14c), (14d) that is used for inserting quencher at this afterbody; The ratio of Reaktionsofen length overall and the drum diameter of Reaktionsofen downstream is 10 to 30.
20, according to the equipment of claim 14 or 20 described production soft carbons, (9) length overall of Reaktionsofen wherein and Reaktionsofen downstream cylindrical section diameter ratio preferably 12 to 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106499A CN1014151B (en) | 1986-09-15 | 1986-09-15 | Process and equipment for prodn. of soft carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106499A CN1014151B (en) | 1986-09-15 | 1986-09-15 | Process and equipment for prodn. of soft carbon black |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106499A CN86106499A (en) | 1987-04-22 |
| CN1014151B true CN1014151B (en) | 1991-10-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86106499A Expired CN1014151B (en) | 1986-09-15 | 1986-09-15 | Process and equipment for prodn. of soft carbon black |
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| Country | Link |
|---|---|
| CN (1) | CN1014151B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270235B (en) * | 2008-04-25 | 2011-07-13 | 青州市博奥炭黑有限责任公司 | Reaction furnace for preparing soft hydrocarbon black |
| CN101270234B (en) * | 2008-04-25 | 2012-01-11 | 青州市博奥炭黑有限责任公司 | Method of preparing soft hydrocarbon black |
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| CN101158470B (en) * | 2007-09-26 | 2012-02-22 | 石家庄市新星化炭有限公司 | Burning segment process in improved black carbon production and special oil and gas spray gun thereof |
| CN101368011B (en) * | 2008-07-29 | 2011-11-30 | 陈智贤 | Carbon black products and production process thereof |
| CN101358042B (en) * | 2008-07-29 | 2011-11-30 | 陈智贤 | Pigment carbon black products and preparation technique thereof |
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| CN103804962A (en) * | 2014-01-22 | 2014-05-21 | 张海 | Novel combustion furnace for preparing carbon black |
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| CN115443315A (en) * | 2021-04-02 | 2022-12-06 | 东海炭素株式会社 | Carbon black and process for producing carbon black |
| CN113667327A (en) * | 2021-09-17 | 2021-11-19 | 山西焦化股份有限公司 | Production method of carbon black |
| CN113913034A (en) * | 2021-11-19 | 2022-01-11 | 文杰方 | Process for producing soft carbon black by oil furnace method hard reaction furnace |
| CN115322593A (en) * | 2022-07-04 | 2022-11-11 | 广州海印新材料研究发展有限公司 | Carbon black for rubber products and preparation method and application thereof |
-
1986
- 1986-09-15 CN CN86106499A patent/CN1014151B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270235B (en) * | 2008-04-25 | 2011-07-13 | 青州市博奥炭黑有限责任公司 | Reaction furnace for preparing soft hydrocarbon black |
| CN101270234B (en) * | 2008-04-25 | 2012-01-11 | 青州市博奥炭黑有限责任公司 | Method of preparing soft hydrocarbon black |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106499A (en) | 1987-04-22 |
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