CN1014900B - Dual-purpose reaction furnace for producing soft/hard carbon black and corresponding process thereof - Google Patents
Dual-purpose reaction furnace for producing soft/hard carbon black and corresponding process thereofInfo
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- CN1014900B CN1014900B CN 89105906 CN89105906A CN1014900B CN 1014900 B CN1014900 B CN 1014900B CN 89105906 CN89105906 CN 89105906 CN 89105906 A CN89105906 A CN 89105906A CN 1014900 B CN1014900 B CN 1014900B
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Abstract
The present invention relates to a dual-purpose reaction furnace and a corresponding process which are used for producing soft/hard carbon black. The reaction furnace is composed of a combustion zone, a mixing zone, a first reaction zone and a second reaction zone; fuel (oil or gas) and raw oil are respectively pumped in the combustion zone and the compounding zone, and mixed raw oil drops of thermal currents for combustion residual gas hastily flow through the first reaction zone and the second reaction zone so as to complete reaction for carbon black production; as long as technological parameters are properly regulated, different kinds of carbon black, such as hard carbon black and soft carbon black, can be produced in a transformational mode; energy consumption decreases by 27% when the soft carbon black is produced, and the energy consumption also reaches an advanced level when the hard carbon black is produced.
Description
The invention relates to and produce sooty Reaktionsofen and related methods of production thereof.
Method of producing black pigment has contact process, steam stove method, oil oven method and thermal process etc., and is wherein most important with the oil oven method, uses the most extensive.It generally is to adopt the syllogic Reaktionsofen of being made up of burning zone, mixing section, conversion zone that the oil oven method is produced carbon black; air and fuel (oil or gas) are led to burning zone perfect combustion generation high temperature gas flow; this air-flow during through mixing section to wherein spraying into stock oil; stock oil and high temperature gas flow high-speed mixing; the high heat of air-flow impels stock oil to be transformed into carbon black at mixing section and conversion zone; spray into quenched water from the terminal furnace wall of conversion zone and stop the soot formation reaction; contain the sooty hot gas flow after continuing cooling, deliver to conventional collector and finished product tablets press by passage.
The Reaktionsofen of oil oven method production usefulness is divided into two types of hard (carbon) black Reaktionsofen and soft carbon black reaction furnaces according to producing carbon black characteristic and purposes.The former furnace volume is little, and air and stock oil ratio are big, the furnace temperature height, and reaction in furnace logistics speed is rapid, and the formation reaction district residence time (hereinafter to be referred as the residence time) is shorter, and carbon black pellet is little.Latter's furnace volume is bigger, and air and stock oil ratio are less, and furnace temperature is lower, and reaction in furnace logistics speed is slower, and the residence time is longer, and carbon black pellet is bigger.Therefore, the main technologic parameters in the burner hearth geometrical shape of this two classes black reactor and the production is all completely different.After the syllogic Reaktionsofen is produced the appearance of sooty novel technique, fuel and raw material are fed at the front and back different positions respectively, make fuel in burning zone generation combustion reactions, raw material carries out the soot formation reaction at mixing section and conversion zone, to strengthen reaction process, economic benefit develops skill.
The constructional feature of novel process Reaktionsofen is to have burning zone, mixing section, conversion zone, soft to producing, hard (carbon) black is all suitable equally, and processing parameter is except that total rate of combustion is kept intact substantially, other parameter is also to drawing close the direction change, for example, the residence time is more approaching.Therefore, it is contemplated that, design that a Reaktionsofen is produced hard in turn and soft carbon is not vain hope.But, during new process carbon black is produced at present, still make soft carbon and hard (carbon) black with the syllogic Reaktionsofen production line of different structure respectively.Promptly use a production line to make the Reaktionsofen that this two classes carbon black also must be provided with two different structure characteristics, follow-up equipment is shared.Like this, certainly will invest more, take up an area of more, and need switch Reaktionsofen during the carbon black of changing the line of production different classes of, and need influence to produce several days at every turn, comprise and change stove, baker, and cause quality product fluctuation etc.Especially be difficult to adapt to market demands jumpy.
An object of the present invention is to provide a kind of dynamical reactor for production of carbon black.
Another object of the present invention provides a kind of as long as change soft, the hard (carbon) black production dual-purpose reaction furnace (hereinafter to be referred as dual-purpose reaction furnace) that processing parameter just can be produced hard (carbon) black or N500, N600, N700 series soft carbon in turn.
A further object of the present invention provides a kind of dual-purpose reaction furnace production sooty method of the present invention of utilizing.
Another purpose of the present invention provides a kind of method of utilizing dual-purpose reaction furnace of the present invention to produce soft carbon and hard (carbon) black.
A further object of the invention provides a kind of yield height, the method for producing black pigment that energy consumption, cost are all low.
Accompanying drawing is the structural representation that soft, hard (carbon) black of the present invention is produced dual-purpose reaction furnace.
Dual-purpose reaction furnace is with the general the same inner lining refractory of black reactor, Covered with Angles iron-clad (not shown). Press airflow direction and distinguish, dual-purpose reaction furnace is made up of fuel combustion section (11), thermal current and feedstock oil mixing section (12), first conversion zone (13) and the double cooling section (14) (hereinafter to be referred as second conversion zone) of second reaction. The leading portion of burning zone (11) upstream portion is furnished with carrier atomizing burner (18), this upstream portion side is furnished with tangential air input pipe (24), burning zone (11) burner hearth is that cylindrical shape and convergent taper shape are combined into, and cylinder diameter partly is generally 380～720mm, preferably 400～600mm; The convergent circular cone partly is the intermediate that connects this cylinder and trunnion (26), and coning angle is generally 10～45 degree, and preferably 15～25 spend, and angle is little, and drag losses is little; The length of burning zone (11) is generally 3～5 times of this drum diameter. Mixing section (12) divides upstream portion and downstream portion, the furnace wall of upstream and downstream section sets respectively feedstock oil spray bar (22), (23), the upstream portion of mixing section (12) is exactly the downstream portion of circular cone of burning zone (11), the mixing section downstream portion is cylindrical shape trunnion (26), the diameter of trunnion decides from the flow velocity of selected combustion residual air by it, its operating mode flow velocity is generally 200～400m/S, and the length of trunnion is generally 150～300mm. Conversion zone is divided into first conversion zone (13) and second conversion zone (14), is the different cylindrical shape of diameter; First, second conversion zone is made of the different two sections annular walls (27) of internal diameter, (28) respectively; The upstream section side direction of first conversion zone (13) is furnished with auxiliary air pipeline (25), the diameter d of first conversion zone (13)1Between trunnion (26) diameter d and second conversion zone (14) diameter d2Between, d normally1At (d+d2)/1.5 are to (d+d2In the scope of)/2.5, its length l1With diameter d1Ratio l1/d
1Be 1～5. Be provided with successively the sparge pipe (19) of chilling when being respectively applied to produce hard and soft carbon and the sparge pipe (21) of (20) and continuation cooling usefulness on the furnace wall of second conversion zone (14), can be equipped with respectively a plurality of water nozzles on these water pipes, for example, be from upstream to the downstream and join water nozzle the 1st, 2, No. 3 at water pipe (19) in turn, join water nozzle the 4th, 5, No. 6 at water pipe (20), join No. 7 water nozzle etc. at water pipe (21); The diameter of second conversion zone (14) is cylinder 0.75～1.5 times of diameter partly of burning zone (11), and its length is decided by the time of staying of wishing and produces soft, the desired dischargeable capacity of hard (carbon) black. Conversion zone before mixing section and the chilling position is referred to as carbon black reaction of formation of the present invention district. Connect road (15) behind second conversion zone (14). The total length of dual-purpose reaction furnace of the present invention is 9～15m, preferably 11～14m. Fuel and feedstock oil are separately sprayed into respectively burning zone and the mixing section of reacting furnace, and make the oil burner nozzle of feedstock oil spray bar be in high temperature, the high speed position of thermal current in the stove. The method that dual-purpose reaction furnace is produced carbon black is as follows.
Cartridge (16) and a combustion-supporting end with air hose (17) connect respectively fuels sources (oil pump or Gas Pipe) and air blast. Pipe (16) other end is sent into fuel F the fuel burner (18) that is connected to burning zone (11) front end, pipe (17) other end has axially and two branch roads of side direction, axially branch road is sent air A into burner (18), and fuel F and air A lead to burning zone (11) internal combustion. The ratio of control air capacity and fuel quantity makes complete combustion of fuel and temperature reach the expection requirement. When the high temperature gas flow that fuel combustion produces passes through mixing section (12); spray into and high-speed mixing through pipe (22) or pipe (23) with the feedstock oil f that is carried by oil pump; keep the interior hot stream temperature of mixing section up to 1400～1600 ℃; flow velocity is up to 200～400m/S; promote raw material oil droplet micronize and vaporize; and then flow through first conversion zone (13) and second conversion zone (14) are finished the carbon black reaction of formation. Then according to different kind of carbon black, quality requirement, select appropriate position in second conversion zone, to spray into chilled water (chw) W, make pre-chilling after thermal current be cooled to about 950 ℃, stop the carbon black reaction of formation. Spray pre-chilled water (chw) with sparge pipe (19) when producing hard (carbon) black, water pipe (20) sprays pre-chilled water (chw) when producing soft carbon, regulate again the injection flow rate of final cooling water pipe (21), make to contain the carbon black thermal current and continue to cool to 600～700 ℃, to satisfy the equipment such as follow-up heat exchanger and bag hose to the requirement of gas flow temperature. The carbon black smoke that contains after the cooling is delivered to conventional collector and finished product comminutor through passage (15).
The oil circuit of feedstock oil f has 2 spray bars (22) and (23), and 2 oil nozzles are respectively arranged, and radially sprays into raw material, and oil nozzle spacing 180 degree also can evenly distributed 4 or 6 oil nozzles. With reference to the structural requirement of section air velocity and carbon black products, can use wherein oil pipe, must not use simultaneously this 2 injection tubings. Wish that the carbon black structure height then uses oil pipe (22) oil spout, otherwise, pipe (23) used. Air hose (17) side direction branch road has again 2 arms (24), (25), if find burning zone (11) burner hearth coking, under the total air permanence condition, reduces axially tolerance of pipe (17), passes into air from pipe (24) and goes to burn no coking Then pipe (24) can often be closed. Pipe (25) is secondary-air passage, in order to regulate carbon black mass, controls carbon black structure and burnt grain content, and the time spent can not close.
Burning zone (11) is basic identical to the effect of producing hard (carbon) black and soft carbon, all is the requirement complete combustion of fuel and makes heat combustion residual air reach temperature and the flow velocity of expection. When the present invention produced soft carbon and hard (carbon) black, the high temperature gas flow speed of the interior feedstock oil of mixing section (12) place of spraying into section was decided to be respectively 200～300m/S and 270～400m/S. Selection requirements to the primary combustion rate is also basic identical, by the total air fuel metering that passes into burning zone (11) (oil or gas) consumption, the primary combustion rate is met the requirements, and is generally 130%～300%, and preferably 150%～250%. Therefore, the furnace temperature of dual-purpose reaction furnace burning zone of the present invention (11) should be considered this factor than the furnace temperature height of conventional soft carbon black reaction furnace when the design refractory liner. The effect of the 2 groups of atomizers in front and back of mixing section (12) is to regulate the structural of carbon black, and soft, hard (carbon) black production all are suitable for. The hot stream temperature requirement of mixing section (12) entrance, soft, hard (carbon) black production all had same meaning, but total combustion rate height of selecting because of hard (carbon) black production, and the combustion rate of soft carbon production usefulness is low, so, when the hot stream temperature of mixing section (12) and first conversion zone (13) thereafter and second conversion zone (14) is higher than the production soft carbon when producing hard (carbon) black. The present invention is divided into first conversion zone (13) and second conversion zone (14) with the reaction of formation process of carbon black, and the reacting furnace that is different from Chinese patent application numbers 88104177.7 only has a conversion zone. The different two sections annular walls (27) of internal diameter and (28) are set consist of respectively first conversion zone (13) and second conversion zone (14), slow down the impetus of the air-flow sudden exponsion that contains carbon black and ganglion, both received that the shearing force that produces because of sudden exponsion strengthened the effect of carbon black reaction of formation, can reduce again the formation of burnt grain. Because under the imperfect combustion condition, when vaporizing still to drop, oil droplet just do not generate burnt with red-hot lining refractory brick Surface Contact, if the impetus of air-flow sudden exponsion is excessive, then the flow velocity of air-flow falls sharply too quickly, cause easily ganglion to contact with stove brick inner surface and form burnt grain, because taking littler total combustion rate, more at the ganglion at this position when especially producing soft carbon, the burnt grain of easier formation. It is exactly to make when producing soft carbon burnt grain content in the carbon black drop to the scope of permission that the present invention adopts two conversion zones. Second conversion zone (14) has two functions, and the one, finish the carbon black reaction of formation, another is to spray into chilled water (chw) to stop reaction of formation. Because it is very big that hard (carbon) black and soft carbon generate needed time of staying difference, the time of staying of for example producing high wear-resistant carbon black control is 0.015～0.05 second, and the time of staying of producing general carbon black control is 0.2～0.5 second. And the time of staying and the feedstock oil f burner hearth dischargeable capacity after spraying into is directly proportional, so the dischargeable capacity of second conversion zone (14) of soft carbon production requirement is big, the volume of hard (carbon) black production requirement is little. Take into account the different requirements of two aspects, selected appropriate furnace diameter take the needed dischargeable capacity of soft carbon as foundation, designs the length of second conversion zone (14) again. Stop reaction of formation from chilling water pipe (20) water spray when producing soft carbon, guarantee the long time of staying; From chilling water pipe (19) water spray, shorten the time of staying during production hard (carbon) black, make it to reach requirement, its rear hearth is some uses that cooling and passage are just made to continue in the zone of symbol " C " indication in the accompanying drawing.
Dual-purpose reaction furnace of the present invention has two remarkable advantages. The one, both can produce soft carbon, can be used for again producing hard (carbon) black, to the strong adaptability of the market demand. Especially middle or small carbon black plant, the requirement that product is constantly changed for satisfying to greatest extent the old and new users. Arrange the production of carbon black kind and improve the competitiveness flexibly, it is particularly advantageous adopting dual-purpose reaction furnace of the present invention to produce carbon black. Second advantage is capable of reducing energy consumption 27% when producing soft carbon with dual-purpose reaction furnace of the present invention, and cost further reduces, and the advanced oil consumption level of the three sections reacting furnaces of oil consumption and new technology when producing hard (carbon) black is similar. And general soft carbon black reaction furnace production has coking phenomenon to take place often, make technology instability and quality of products, and the present invention does not have coking phenomenon when producing, make that coke content greatly reduces in the product, guarantee product quality, also can further see other advantage and good effect from the following example of listing with form.
Table 1 is the main technique operating parameters of dual-purpose reaction furnace test of the present invention.
Table 2 is carbon black oil consumption and carbon black products quality.
Table 3 is that dual-purpose reaction furnace of the present invention is produced soft carbon and popular response stove economic benefit compares.
Table 1 Reaktionsofen test of the present invention main technique operating parameters
Carbon black classification N330 N660 N642
Test number 123456789
Parameter name
Fuel oil mass l/h 89 105 98 73 68 73 65 59 60
Raw material oil mass l/h 588 606 617 667 675 828 604 678 825
Total air Nm
3/ h 2,500 2,500 2,350 2,050 2,100 2100/2,000 2300
Anxious frozen water l/h 1,500 1,280 1,500 1,280 1,260 1,250 960 1,100 1120
Burning furnace temperature ℃ 1,490 1,500 1,560 1,400 1,460 1,460 1,460 1,450 1450
Reaction furnace temperature ℃ 1,450 1,480 1,430 1,260 1,280 1,300 1,240 1,210 1320
Quenched water position No 1,4,71,4,71, and 4,76,76,76,75,6,76,76,7
* raw material oil gun position .mm 80 80 80 80 80 80 80 80 80
The stock oil jet angle. spend 30 30 30 30 30 30 30 30 30
Whether expiring the taper oil spout is
Oil nozzle number and diameter mm 2 * 22 * 22 * 22 * 22 * 22 * 22 * 22 * 22 * 2
Stock oil proportion d
2 ' 201.13 1.13 1.13 1.13 1.13 1.13 1.13 1.13
The stock oil index of correlation 159.5 159.5 159.5 159.5 159.5 159.5 159.5
* refer to the mm number of raw material oil gun apart from the preceding headwall of first conversion zone
Oil consumption of table 2 carbon black and carbon black products quality table
Test number 123456789
Title
Carbon black output Kg/h 350 370 360 483 498 520 398 443 523
Carbon black oil consumption T/T 2.19 2.17 2.24 1.73 1.69 1.96 1.90 1.88 1.91
Average fuel consumption T/T 2.20 1.79 1.90
Quality product:
Inhale iodine amount mg/g 86 89 85 33 37 38 35 38 35
Oil number ml/g 0.97 0.95 1.02 0.82 0.84 0.84 0.74 0.65 0.67
Tensile strength at yield MPa 27.6 26.8 28.3 27.3 25.7 25.8 26.1 27.6 27.3
300% stretches MPa 13.5 13.3 15.1 8.6 8.7 8.9 9.8 7.5 8.1 surely
Elongation % 540 530 500 600 610 610 550 620 610
Table 3 dual-purpose reaction furnace of the present invention produces soft carbon and popular response stove benefit compares
Project can consumption energy consumption ratio factory cost benefit cost ratio
The type of furnace (10
6J/T) (%) (unit/T) (%)
Dual-purpose reaction furnace 76,685 73 1421.5 81
Popular response stove 104,863 100 1767.3 100
Claims (3)
1, a kind of soft, hard (carbon) black is produced dual-purpose reaction furnace, burning zone (11) by the outer Composite Iron And Steel shell of inner lining refractory, mixing section (12), first conversion zone (13), the double cooling section (14) of second reaction is formed, burning zone (11) upstream portion leading portion is furnished with carrier atomizing fuel nozzle (18), this upstream portion side is furnished with tangential air input tube (24), burning zone (11) burner hearth is the round shape of diameter 380～720mm and the conical be combined into of convergent of cone angle 10～45 degree, burning zone length is generally 3～5 times of this drum diameter, mixing section (12) is divided into upstream portion and downstream portion, on, the furnace wall of downstream portion sets stock oil spray bar (22) respectively, (23), this upstream portion is exactly the downstream portion of circular cone of burning zone cylinder (11), this downstream portion is the long round shape trunnion (26) of 150～350mm, it is characterized in that, the upstream section side direction of first conversion zone (13) is furnished with secondary air pipeline (25), the first conversion zone diameter d 1 is between trunnion (26) diameter d and the second conversion zone diameter d 2, usually d1 is in the scope of (d+d2)/1.5 to (d+d2)/2.5, its length 11 is 1～5 with the ratio 11/d1 of diameter d 1, be provided with the water jet standpipe (19) of chilling when being respectively applied for production hard and soft carbon and the water jet standpipe (21) of (20) and continuation cooling usefulness on the furnace wall of second conversion zone (14) successively, second conversion zone (14) diameter is cylinder 0.75～1.5 times of diameter partly of burning zone (11), its length is decided by the residence time of wishing and produces soft, the desired useful volume of hard (carbon) black, the total length of dual-purpose reaction furnace of the present invention are 9～15m.
2, according to described soft, the hard (carbon) black production dual-purpose reaction furnace of claim 1, it is characterized in that the total length of this dual-purpose reaction furnace is 11～14m preferably.
3, a kind of use claim 1 is described soft, hard (carbon) black is produced dual-purpose reaction furnace and is produced the sooty method, fuel and air lead to the interior perfect combustion of burning zone (11), the stock oil high-speed mixing that the high temperature gas flow that produces sprays into spray bar (22) on the mixing section furnace wall or (23) during through mixing section (12), keep 1400～1600 ℃ of the interior hot stream temperatures of mixing section (12) and flow velocity 200～400m/s, flow through first conversion zone (13) and second conversion zone (14) of hot gas flow finished the soot formation reaction, in second conversion zone, spray into quenched water and stop the soot formation reaction, it is characterized in that, spray pre-quenched water with water jet standpipe (19) when producing hard (carbon) black, water pipe (20) spray quenched water when producing soft carbon, spray into stock oil with spray bar (22) when wishing that carbon structure is high, wish to use when carbon structure is low oil pipe (23) spray stock oil, if burning zone (11) burner hearth coking then uses tangential air input tube (24) bubbling air to go to burn, regulate carbon black mass and control carbon structure with secondary air pipeline (25), burnt grain content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105906 CN1014900B (en) | 1989-05-02 | 1989-05-02 | Dual-purpose reaction furnace for producing soft/hard carbon black and corresponding process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105906 CN1014900B (en) | 1989-05-02 | 1989-05-02 | Dual-purpose reaction furnace for producing soft/hard carbon black and corresponding process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1038293A CN1038293A (en) | 1989-12-27 |
| CN1014900B true CN1014900B (en) | 1991-11-27 |
Family
ID=4856540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105906 Expired CN1014900B (en) | 1989-05-02 | 1989-05-02 | Dual-purpose reaction furnace for producing soft/hard carbon black and corresponding process thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1014900B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108003666B (en) * | 2018-01-05 | 2023-03-14 | 江西黑猫炭黑股份有限公司 | Method for manufacturing carbon black capable of discharging low-nitrogen flue gas |
| CN108276809A (en) * | 2018-03-08 | 2018-07-13 | 无锡双诚炭黑科技股份有限公司 | The reaction unit and reaction method of carbon black are produced using the high boiling range slurry oil of petrochemical industry |
| CN108299864A (en) * | 2018-03-19 | 2018-07-20 | 邯郸黑猫炭黑有限责任公司 | A kind of black reactor device |
| CN109777158A (en) * | 2019-03-05 | 2019-05-21 | 云南云维飞虎化工有限公司 | A kind of new-type carbon black reacting furnace |
| CN110511599A (en) * | 2019-09-04 | 2019-11-29 | 山西三强新能源科技有限公司 | Hard (carbon) black reacting furnace |
| CN111440463A (en) * | 2020-05-23 | 2020-07-24 | 邯郸黑猫炭黑有限责任公司 | Method for reducing anthracene oil consumption in carbon black production |
| CN112619334A (en) * | 2020-10-22 | 2021-04-09 | 无锡英普朗科技有限公司 | High-temperature plasma reaction device |
| CN113913034A (en) * | 2021-11-19 | 2022-01-11 | 文杰方 | Process for producing soft carbon black by oil furnace method hard reaction furnace |
| CN114539822B (en) * | 2022-03-09 | 2023-02-17 | 山东联科新材料有限公司 | Production method of food-grade carbon black |
| CN115491053B (en) * | 2022-10-12 | 2023-10-03 | 苏州宝化炭黑有限公司 | Process for producing carbon black with low polycyclic aromatic hydrocarbon |
-
1989
- 1989-05-02 CN CN 89105906 patent/CN1014900B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN1038293A (en) | 1989-12-27 |
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