JPH03146568A - Production of carbon black - Google Patents
Production of carbon blackInfo
- Publication number
- JPH03146568A JPH03146568A JP1286066A JP28606689A JPH03146568A JP H03146568 A JPH03146568 A JP H03146568A JP 1286066 A JP1286066 A JP 1286066A JP 28606689 A JP28606689 A JP 28606689A JP H03146568 A JPH03146568 A JP H03146568A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- carbon black
- oil
- gas flow
- fuel oil
- 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.)
- Granted
Links
- 239000006229 carbon black Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 53
- 239000003921 oil Substances 0.000 claims abstract description 38
- 239000000295 fuel oil Substances 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 239000000567 combustion gas Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 13
- 229930195733 hydrocarbon Natural products 0.000 claims description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims description 12
- 239000004215 Carbon black (E152) Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000010791 quenching Methods 0.000 abstract description 5
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 235000019241 carbon black Nutrition 0.000 description 24
- 238000009826 distribution Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 241000872198 Serjania polyphylla Species 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/50—Furnace black ; Preparation thereof
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高比表面積と改善された凝集性状を有するカ
ーボンブラック、特に大型タイヤに要求される高度の耐
摩耗性を付与するために有効なカーボンブラックを製造
するための方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is a carbon black having a high specific surface area and improved cohesive properties, which is particularly effective for imparting high wear resistance required for large tires. The present invention relates to a method for producing carbon black.
近年における自動車の高性能化はタイヤ部材に対しても
厳しい要求を与えており、特に良路、悪路を問わず苛酷
な走行を余儀なくされるトラック、バス等の大型車両用
タイヤゴムに高度の耐摩耗性を付与することができるカ
ーボンブラックの供給が求められている。The high performance of automobiles in recent years has placed strict demands on tire components, and in particular, tire rubber for large vehicles such as trucks and buses, which are forced to drive harshly on both good and bad roads, has a high degree of durability. There is a need for a supply of carbon black that can impart abrasive properties.
従来、この目的に対しては例えばＮ−２３４，Ｎ−１１
０のような高い比表面積ならびに着色力を有する品種の
カーボンブラックが有効とされている。Conventionally, for this purpose, for example, N-234, N-11
Carbon black of a variety having a high specific surface area such as 0.0 and high coloring power is said to be effective.
これら微小粒子径のカーボンブラックを製造するために
は、燃焼ガス流の高速旋回化、原料炭化水素の高温熱分
解化、原料炭化水素の注入位置における高線流速化など
が主要な条件になることが知られており、この条件に適
合する先行技術としては下記の例がある。In order to produce carbon black with these minute particle sizes, the main conditions are high-speed swirling of the combustion gas flow, high-temperature pyrolysis of the raw material hydrocarbon, and high linear flow velocity at the injection position of the raw material hydrocarbon. is known, and examples of prior art that meet this condition include the following.
米国特許第２８５１３３７号明細書に記載のあるカーボ
ンブラックの製造方法は、狭径化スロート部を備えるベ
ンチュリ型炉において原料油バーナーを前記スロート部
に炉軸に対して垂直方向に挿着し、該挿着位置のガス線
速度を１５０ｆ ｔ／ｓｅｅ （４６ｍ／５ｅｃ）、好
ましくは２０（Ｉｆ ｔ／ｓｅｃ （６１ｉ＋／５ｅｃ
）から４０００ｆ ｔ／ｓｅｅ （１２１９■／５ｅｃ
）に設定することにより、前段で生成した燃焼ガス〔燃
焼フレーム温度： ２０００〜３０００” Ｆ（１０９
３〜１６４９°Ｃ〕と原料油の接触を高めて均一分散化
を図っている。なお、開示されているベンチュリ型炉の
構造は、前方収斂角度１１°以下、後方拡大角度４°以
下、スロート部に挿着される原料油ノズルは９０°間隔
で４本であり、原料油はアトマイズ法により霧化噴射し
ている。The method for producing carbon black described in U.S. Pat. No. 2,851,337 involves inserting a raw material oil burner into the throat in a direction perpendicular to the furnace axis in a venturi-type furnace equipped with a narrowed throat. The gas linear velocity at the insertion position is 150 f t/see (46 m/5 ec), preferably 20 (If t/sec (61 i +/5 ec)
) to 4000ft/see (1219■/5ec
), the combustion gas generated in the previous stage [combustion flame temperature: 2000 to 3000" F (109
3 to 1,649°C] to increase contact between the raw material oil and achieve uniform dispersion. The structure of the disclosed Venturi type furnace is such that the forward convergence angle is 11 degrees or less, the rear expansion angle is 4 degrees or less, there are four feedstock oil nozzles inserted into the throat part at 90° intervals, and the feedstock oil is It is atomized and sprayed using the atomization method.
米国特許第３４９０８６７号明細書には、上記と同一構
造のベンチュリ型炉をベースとし、狭径化スロート部を
若干長尺化したうえで２系列の炉頭燃焼室をベンチュリ
前方の広域部人口に収斂させ、その収斂部位に原料油注
入ノズルを炉軸方向に挿着して位置制御することによっ
てｌ５ＡＰ、 ＳＡＰ、 ５ＡＦ−Ｈ３゜ＳＡＦ−ＬＭ
等の微粒子系カーボンブラックの生産することが示され
ている。この場合の条件は、狭径化スロート部の線流速
は３００〜２６００４ｔ／５ｅｅ（９１〜７９２ｍ／５
ｅｃ） 、好ましくは４５０−１６００ｆｔ／５ｅｃ（
１３７〜４８７＋／５ｅｅ） 、炉内温度分布は燃焼ガ
ス３５００〜２９００゜Ｆ（１９２９〜１５９３°Ｃ）
、原料油注入後のスロート部出口３２００〜２６００’
Ｆ（１７６０〜１４２７°Ｃ）と記載されている。U.S. Patent No. 3,490,867 discloses a venturi-type furnace having the same structure as above, with a narrowed throat section slightly longer, and two series of furnace combustion chambers installed in a wide area in front of the venturi. 15AP, SAP, 5AF-H3゜SAF-LM
It has been shown that fine particulate carbon blacks such as the following can be produced. The conditions in this case are that the linear flow velocity at the narrowed throat part is 300 to 26004 t/5ee (91 to 792 m/5ee).
ec), preferably 450-1600ft/5ec(
137~487+/5ee), the temperature distribution inside the furnace is 3500~2900°F (1929~1593°C) for the combustion gas.
, Throat outlet 3200-2600' after raw oil injection
F (1760-1427°C).
米国特許第３９２２３３５号明細書の方法では、円筒型
炉を構成する狭径部の同一平面に原料油を、周辺から放
射状におよび炉内中心から炉壁方向に分割して導入する
ことを要件とし、この際原料油は少なくともマツハ０．
３５、好ましくは マツハ０．４〜０．８の高線流速域
へ注入することが示されている。なお、原料油は、燃焼
ガスとの十分な接触と炉壁との接触防止（コークス付着
防止）を図るために、狭径部直径の１５〜５０％に相当
する深さを維持するように導入している。The method disclosed in U.S. Pat. No. 3,922,335 requires that feedstock oil be introduced into the same plane of the narrow diameter portion of the cylindrical furnace radially from the periphery and in divided directions from the center of the furnace toward the furnace wall. At this time, the raw material oil has at least Matsuha 0.
35, preferably in the high linear velocity range of Matsuha 0.4 to 0.8. In addition, in order to ensure sufficient contact with the combustion gas and to prevent contact with the furnace wall (preventing coke adhesion), the feedstock oil is introduced to maintain a depth equivalent to 15 to 50% of the diameter of the narrow diameter part. are doing.
米国特許第３９５２０８７号明細書に記載されている方
法は、狭径内筒スロート乃至ベンチュリスロート型の炉
に原料油を分割導入することにより高ストラクチヤー化
カーボンブラックを得るものである０条件として、補助
的炭化水素の導入点を１段目炭化水素の導入位置からク
エンチまでの距離の２〜６０％の範囲に設定すること、
補助的炭化水素の炭素含有量が全炭素含有率の約２〜６
０重量％とすること、原料炭化水素は炉の周辺から放射
状に導入し、かつスロート部内で対象位置から注入され
た炭化水素が相互に衝突しない程度に浸透させること、
原料炭化水素を注入する炉内のガス流速は少なくとも１
５０ｆ ｔ／ｓｅｃ（４６ｍ／５ｅｃ）、好ましくは５
００ｆｔ／ｓｅｅ（１５２ｍ／５ｅｃ）とすること等が
示されている。The method described in U.S. Pat. No. 3,952,087 obtains highly structured carbon black by dividing raw material oil into a narrow-diameter inner cylinder throat or venturi throat type furnace. setting the introduction point of the target hydrocarbon in a range of 2 to 60% of the distance from the first stage hydrocarbon introduction position to the quench;
The carbon content of the supplementary hydrocarbon is approximately 2 to 6 of the total carbon content.
The raw material hydrocarbons should be introduced radially from the periphery of the furnace, and the hydrocarbons injected from the target position in the throat should permeate to an extent that they do not collide with each other.
The gas flow rate in the furnace where the feedstock hydrocarbon is injected is at least 1
50ft/sec (46m/5ec), preferably 5
00ft/see (152m/5ec).
−Ｃに上布されているＮ−１１０（ＳＡＦ）の水準を上
廻る耐摩耗性能を発揮するカーボンブラックは単なる高
比表面積、高着色化のみの改善では達成が不可能であり
、カーボンブラックを構成する粒子凝集体（Ａｇｇｒｅ
ｇａ ｔｅ）構造を可及的に小さくし、かつその分布を
均一化させることが必須の要件になる。Carbon black, which exhibits abrasion resistance that exceeds the level of N-110 (SAF) coated on -C, cannot be achieved by simply improving the specific surface area and coloring. Constituent particle aggregates (Aggre
It is essential to make the structure as small as possible and to make its distribution uniform.
しかるに、この凝集体の微細均一化は上記した先行技術
による燃焼ガスの高旋回、狭径スロート部の高線速化と
いったガス流調整を主体とした手段では、炉の連続操業
度合などとの関係でその達成に限界がある。このため、
別異の手段を付加しない限り大幅な改善を図ることは困
難である。However, the fine homogenization of the aggregates cannot be achieved with the above-mentioned prior art methods that mainly involve gas flow adjustment such as high swirl of combustion gas and high linear velocity at the narrow diameter throat section, but the relationship with the degree of continuous operation of the furnace, etc. There are limits to its accomplishment. For this reason,
It is difficult to achieve significant improvement unless different means are added.
発明者らは、上記の課題を解決するための新たな要因と
して原料油の熱分解時における核粒生成域の雰囲気温度
に着目し、鋭意研究を重ねた結果その局所的な高温均一
化が生戒カーボンブラックの凝集性状を効果的に微細均
一化することを知見して本発明の開発に至ったものであ
る。The inventors focused on the atmospheric temperature in the nucleation region during thermal decomposition of feedstock oil as a new factor to solve the above problem, and as a result of intensive research, they discovered that local high temperature uniformity could be achieved. The present invention was developed based on the discovery that the aggregation properties of carbon black can be effectively made fine and uniform.
したがって、本発明の目的は、従来技術によるガス流調
整に加えて原料油の導入点から熱分解生成時点までの局
所的ゾーンにおける温度上昇と温度分布の均一化により
高比表面積と改善された凝集性状を有するカーボンブラ
ックを製造しようとするところにある。It is therefore an object of the present invention to achieve a high specific surface area and improved flocculation by equalizing the temperature rise and temperature distribution in the local zone from the point of introduction of the feedstock to the point of pyrolysis production, in addition to the gas flow adjustment according to the prior art. The aim is to produce carbon black with specific properties.
上記の目的を達成するための本発明によるカーボンブラ
ックの製造方法は、広径燃焼域に燃焼用空気と一次燃料
油を導入して燃焼ガス流を生成するための一次燃焼工程
、前記−火燃焼工程で生成した燃焼ガス流を狭径化した
スロート状燃焼域に流入して少なくとも１００ｍ／秒の
線速度に加速し、炉軸方向および／または炉軸に直角方
向から二次燃料油を導入して燃焼を完結するための二次
燃焼工程、前記二次燃焼工程で生成した完結燃焼ガス流
を狭径反応域に導き、その周縁から酸化性ガスでアトマ
イズ化した原料油を噴入してカーボンブラックを生成す
るための反応工程、前記反応工程で生成したカーボンブ
ラック含有ガス流を広径の後部反応域に流入して急冷し
、反応を完結するための反応完結工程からなることを構
成上の特徴とするものである。To achieve the above object, the method for producing carbon black according to the present invention comprises a primary combustion step for introducing combustion air and primary fuel oil into a wide-diameter combustion zone to produce a combustion gas stream; The combustion gas flow generated in the process is introduced into a throat-shaped combustion zone with a narrow diameter and accelerated to a linear velocity of at least 100 m/s, and a secondary fuel oil is introduced from the furnace axis direction and/or from a direction perpendicular to the furnace axis. The completed combustion gas flow generated in the secondary combustion step is guided into a narrow-diameter reaction zone, and raw material oil atomized with oxidizing gas is injected from the periphery of the zone to generate carbon. A reaction step for producing carbon black, and a reaction completion step for completing the reaction by flowing the carbon black-containing gas stream produced in the reaction step into a wide-diameter rear reaction zone and quenching it. This is a characteristic feature.
本発明のｔｌＩ戒を図示の製造炉（断面略図）によって
説明すると以下のようになる。The tlI command of the present invention is explained as follows using the illustrated production furnace (schematic cross-sectional view).
区画の範囲として示したように、炉は長さ方向に一次燃
焼工程、二次燃焼工程、反応工程および反応完結工程に
区分される。As indicated by the range of sections, the furnace is longitudinally divided into a primary combustion process, a secondary combustion process, a reaction process, and a reaction completion process.
このうち、−火燃焼工程は炉頭部に接線方向の燃焼用空
気送入ダクトｌを備えるウィンドボックス２と燃焼用バ
ーナー３を装着した一次燃焼域４からなる。燃焼バーナ
ー３には、例えば一次燃焼域４の基部に噴出孔が位置す
る外筒の一次燃料油ノズル５と先端噴出孔が二次燃焼工
程まで伸長した中筒の二次燃焼油ノズル６による２重筒
構造にものが用いられ、−火燃焼工程では一次燃焼油ノ
ズル５を介して燃焼ガス流が生成される。Among these, the -fire combustion process consists of a wind box 2 equipped with a tangential combustion air supply duct 1 at the furnace head and a primary combustion zone 4 equipped with a combustion burner 3. The combustion burner 3 includes, for example, a primary fuel oil nozzle 5 in an outer cylinder whose jet hole is located at the base of the primary combustion zone 4 and a secondary combustion oil nozzle 6 in a middle cylinder whose tip jet hole extends to the secondary combustion stage. A double-tube structure is used, and in the -fire combustion process, a combustion gas flow is generated through the primary combustion oil nozzle 5.
二次燃焼工程は前記−火燃焼工程の出口から緩徐な傾斜
角度で狭径化するスロート状燃焼域７の区域で二次燃焼
油が導入することによりおこなわれる。二次燃料油の炉
内導入は、前記した二次燃焼油ノズル６の先端から炉軸
方向に向かって噴出させるか、該スロート状燃焼域７に
炉壁を貫通して１段または複数段に設置した二次燃料油
オリフィス８を介して炉軸に対し直角方向から噴出する
手段が採られる。これらの２系統の燃料油導入は同時に
または別個におこなうことができる。この二次燃焼工程
で重要な要件は、流通する一次燃焼ガス流が少なくとも
１００ｍ／秒の線速度に加速した状態で二次燃料油を導
入することである。この要件を満足させることにより、
炉系外への輻射伝熱が大幅に低減し、原料油導入域近傍
の局部的ゾーンにおいて高温で温度分布が均一な燃焼ガ
スの生成が達成される。しかし、一次燃焼ガス流の線速
度が１００ｍ／秒未満であると、前記の作用および効果
の発現は著しく減退する。The secondary combustion process is carried out by introducing secondary combustion oil into a throat-shaped combustion zone 7 whose diameter narrows at a gentle inclination angle from the outlet of the -fire combustion process. The secondary fuel oil is introduced into the furnace by jetting it in the axial direction of the furnace from the tip of the secondary combustion oil nozzle 6, or by penetrating the furnace wall into the throat-shaped combustion area 7 in one or more stages. A means is adopted for ejecting fuel oil from a direction perpendicular to the furnace axis through an installed secondary fuel oil orifice 8. These two systems of fuel oil can be introduced simultaneously or separately. An important requirement of this secondary combustion step is that the secondary fuel oil is introduced with the flowing primary combustion gas stream accelerated to a linear velocity of at least 100 m/s. By satisfying this requirement,
Radiation heat transfer to the outside of the furnace system is significantly reduced, and combustion gas with a high temperature and uniform temperature distribution is achieved in a local zone near the feedstock introduction area. However, if the linear velocity of the primary combustion gas flow is less than 100 m/sec, the above actions and effects are significantly reduced.
上記の一次および二次の燃焼工程に供される燃料油とし
ては、比重（１５／４℃）１．０以下、初留点１４０°
Ｃ以下の軽質炭化水素が好適である。The fuel oil used in the above primary and secondary combustion processes has a specific gravity (15/4°C) of 1.0 or less and an initial boiling point of 140°.
Light hydrocarbons below C are preferred.
反応工程は、二次燃焼工程で生成させた完結燃焼ガス流
によって最も高温で温度分布が均一化した狭径反応域９
において原料油を噴入する工程である。原料油は、炉壁
を貫通する複数本の原料油ノズル１０を介して燃焼ガス
の周縁から放射状に導入されるが、この際外部混合式構
造の原料油ノズルを用い、原料油を酸化性ガスによりア
トマイズ化した状態で炉内に霧化噴入する。アトマイズ
化用の酸化性ガスには酸素富化率の高いものが好適であ
るが、この酸素富化率には適正の範囲があり、２１〜４
０％、より好ましくは２１〜３０％に調整することが望
ましい、この理由は、酸素富化率が２１％未満では目的
とする局部的な高温均一化が円滑に達成されなくなり、
また４０％を越える酸素富化率では原料油との局所的な
酸化燃焼が著しくなり、局部的高温均一化は図れるもの
の炉材（通常は高純度アルミナ耐火材）の耐火度を遥か
に越える高温となるため、炉の溶損現象が激しくなるか
らである。The reaction process is carried out in a narrow-diameter reaction zone 9 where the temperature distribution is uniform at the highest temperature due to the completed combustion gas flow generated in the secondary combustion process.
This is a process in which raw oil is injected. The feedstock oil is introduced radially from the periphery of the combustion gas through a plurality of feedstock oil nozzles 10 that penetrate the furnace wall. The atomized state is atomized and injected into the furnace. The oxidizing gas for atomization is preferably one with a high oxygen enrichment rate, but there is an appropriate range for this oxygen enrichment rate, and 21 to 4
It is desirable to adjust the oxygen enrichment rate to 0%, more preferably 21 to 30%, because if the oxygen enrichment rate is less than 21%, the desired local high temperature uniformity will not be achieved smoothly.
In addition, if the oxygen enrichment rate exceeds 40%, local oxidative combustion with the feedstock oil becomes significant, and although local high temperatures can be made uniform, the high temperatures far exceed the refractory rating of the furnace material (usually high-purity alumina refractory material). This is because the melting phenomenon of the furnace becomes severe.
この反応工程において、原料油の噴入位置と同一平面に
燃料油と同一性状の軽質炭化水素油を補助原料油として
噴入すると、これが二次燃焼ガス中に残存する酸素成分
と選択的に燃焼反応を起こし、より高度の局部的高温化
を達成させることが可能となる。In this reaction process, when a light hydrocarbon oil with the same properties as the fuel oil is injected as an auxiliary feedstock in the same plane as the injection position of the feedstock, it selectively combusts with the oxygen components remaining in the secondary combustion gas. It becomes possible to cause a reaction and achieve a higher localized temperature increase.
反応完結工程は、カーボンブラック含有ガス流を炉の末
尾に位置する広径の後部反応域１１に流入し、クエンチ
１２により急冷して反応を完結させる区域である。The reaction completion step is a zone in which the carbon black-containing gas stream enters a wide diameter rear reaction zone 11 located at the end of the furnace and is rapidly cooled by a quench 12 to complete the reaction.
以上の連続工程を経て生成されたカーボンブラック含有
ガスは、ついでバッグフィルターからなる捕集系統で気
固分離されて製品となる。The carbon black-containing gas produced through the above continuous process is then separated into gas and solids by a collection system consisting of a bag filter to become a product.
本発明によれば、一次燃焼工程と特定された条件の二次
燃焼工程による燃料油の２段階燃焼および反応工程によ
る原料油のアトマイズ化噴入が相乗的に作用して、原料
油導入点から熱分解時点までの局部的区域を著しく高温
でかつ温度分布が均一化した状態に形成する。したがっ
て、高い比表面積と一次ストラクチャーを有し、凝集体
のモード径が小さくてその分布が均一化した独特の性状
を備えるカーボンブラックを得ることができる。According to the present invention, the two-stage combustion of fuel oil through the primary combustion step and the secondary combustion step under specified conditions, and the atomized injection of feedstock oil through the reaction step act synergistically, and from the feedstock introduction point. The local area up to the point of pyrolysis is created at a significantly higher temperature and with a more homogeneous temperature distribution. Therefore, it is possible to obtain carbon black with unique properties such as a high specific surface area, a primary structure, a small mode diameter of aggregates, and a uniform distribution.
また、上記の局部的な高温均一化は、特に残渣分を多量
に含む粗悪な原料炭化水素油を用いても高度の耐摩耗性
を付与し得るカーボンブラックに転化させることが可能
となる。In addition, the above-mentioned local high-temperature homogenization makes it possible to convert into carbon black that can provide a high degree of wear resistance even when using a poor-quality raw material hydrocarbon oil that contains a large amount of residue.
以下に、本発明の実施例を比較例を対比して説明する。 Examples of the present invention will be described below in comparison with comparative examples.
実施例Ｉ〜４、比較例１〜４
炉頭部に接線方向の燃焼用空気送入ダクト１を有するウ
インドボンクス２を設置するとともに一次燃料油ノズル
５および二次燃料油ノズル６からなる２重構造の燃焼バ
ーナー３を装着した直径６００−５長さ６００ｇｎ＋の
一次燃焼域４、一次燃焼域４の出口から同軸的に連設さ
れた入口部直径２５０ｍｍ 。Examples I to 4, Comparative Examples 1 to 4 A wind box 2 having a tangential combustion air supply duct 1 is installed at the furnace head, and the wind box 2 is composed of a primary fuel oil nozzle 5 and a secondary fuel oil nozzle 6. A primary combustion zone 4 with a diameter of 600-5 and a length of 600gn+ is equipped with a heavy-duty combustion burner 3, and an inlet portion connected coaxially from the outlet of the primary combustion zone 4 has a diameter of 250 mm.
出口部直径１５０ｍ＋ｗ 、長さ８０％＋ｗの狭径化ス
ロート状燃焼域７、これに引き続く周辺から６本のアト
マイズ型原料油ノズル１０を等間隔に貫設し、同一平面
に補助原料油を噴入するためのノズルを対向的に２本貫
設した直径１５０ｍｍ 、長さ３００■−の狭径反応域
９、下流側に向かって緩やかに開口し後部にクエンチ１
２を備えた入口部直径１５０ｍ５ 、出口部直径４００
ｍｍ 、長さ６００■の後部反応域１１からなる構造の
製造炉を用い、一次燃粗油ノズル５の噴出孔を一次燃焼
域４の基部に、二次燃料油ノズル６の先端噴出孔をスロ
ート状燃焼域７の中間位置にセットした。A narrow throat-shaped combustion zone 7 with an outlet diameter of 150 m+w and a length of 80%+w is followed by six atomized feedstock oil nozzles 10 inserted at equal intervals from the periphery to inject auxiliary feedstock oil onto the same plane. A narrow reaction area 9 with a diameter of 150 mm and a length of 300 mm has two nozzles running through it oppositely, and a quench 1 at the rear that opens gently toward the downstream side.
2, inlet diameter 150m5, outlet diameter 400m5
Using a production furnace having a structure consisting of a rear reaction zone 11 with a length of 600 mm and a length of 600 cm, the ejection hole of the primary crude oil nozzle 5 is located at the base of the primary combustion zone 4, and the tip ejection hole of the secondary fuel oil nozzle 6 is placed at the throat. It was set at the middle position of the combustion zone 7.
燃料油および原料油として表１に示す性状のものを使用
し、表２に示す各条件を適用して８種類のカーボンブラ
ックを製造した。原料油と同一平面に噴入した補助原料
油は、燃料油と同一の軽質油とした。Eight types of carbon black were produced using fuel oil and raw material oil having the properties shown in Table 1 and applying the conditions shown in Table 2. The auxiliary feedstock oil injected into the same plane as the feedstock oil was light oil, which is the same as the fuel oil.
得られた各カーボンブラックを特性を製造条件と対比さ
せて表２に併載した。The characteristics of each of the obtained carbon blacks are compared with the manufacturing conditions and are listed in Table 2.
表 ■ （表注）原料油（Ｂ） は、 残炭分の多い粗悪原 粗油である。table ■ (Table note) Raw material oil (B) teeth, Poor quality raw material with high residual coal content It is crude oil.
表２の結果から、本発明の要件を満たす実施例１〜４の
カーボンブラック特性は、高位の比表面積をもち、比較
例に比べて定比表面積当たりの凝集体モード径（５ｓｔ
）が小粒化し、その分布中（ΔＤｓｔ）がシャープに
均一化しており、同時に一次ストラクチャー（２４１１
４０ＢＰ）の向上も認められる。From the results in Table 2, the characteristics of the carbon blacks of Examples 1 to 4, which meet the requirements of the present invention, are that they have a high specific surface area, and the aggregate mode diameter per stoichiometric surface area (5st
) has become smaller and its distribution (ΔDst) has become sharply uniform, and at the same time the primary structure (2411
An improvement of 40 BP) was also observed.
特に、粗悪原料油を適用した実施例３において優れた物
性が得られていることは注目される。これに対し、二次
燃料油を用いない比較例では、凝集体モード径＜５ｓｔ
）が大粒化し、その分布（ΔＤ３ｔ〉も不均一にブロー
ド化していることが確認された。In particular, it is noteworthy that excellent physical properties were obtained in Example 3 in which inferior raw material oil was used. On the other hand, in the comparative example that does not use secondary fuel oil, the aggregate mode diameter < 5st
) became larger, and the distribution (ΔD3t) was also found to be unevenly broad.
以上のとおり、本発明によるカーボンブラックの製造方
法に従えば、高比表面積を有しながらモード径が小さく
、かつその分布が均一化した凝集構造のカーボンブラッ
クを製造することが可能となる。しかも、残成分の多い
粗悪原料油を用いて炉内トラブルなく前記物性の製品を
得ることができるから、工業的に資するところ極めて大
である。As described above, according to the method for producing carbon black according to the present invention, it is possible to produce carbon black having an agglomerated structure that has a high specific surface area, a small mode diameter, and a uniform distribution. In addition, it is possible to obtain a product with the above-mentioned physical properties without any trouble in the furnace by using a poor-quality raw material oil with a large amount of residual components, so it is extremely useful industrially.
したがって、配合ゴムに高度の耐摩耗性を付与すること
が要求されるトラック、バス等のタイヤトレッド用とし
て有用である。Therefore, it is useful for tire treads for trucks, buses, etc., which require a high degree of abrasion resistance to be imparted to compounded rubber.
図は本発明に適用されるカーボンブラック製造装置を例
示した断面略図である。
１・・・燃焼用空気送入ダクト
２・・・ウィンドボックス ３・・・燃焼バーナー４・
・・一次燃焼域 ５・・・一次燃粗油ノズル６・
・・二次燃料油ノズル ７・・・スロート状燃焼域８・
・・二次燃料油オリフィスThe figure is a schematic cross-sectional view illustrating a carbon black manufacturing apparatus applied to the present invention. 1... Combustion air supply duct 2... Wind box 3... Combustion burner 4.
...Primary combustion area 5...Primary crude oil nozzle 6.
...Secondary fuel oil nozzle 7...Throat-shaped combustion area 8.
・Secondary fuel oil orifice
Claims (1)
焼ガス流を生成するための一次燃焼工程、前記一次燃焼
工程で生成した燃焼ガス流を狭径化したスロート状燃焼
域に流入して少なくとも１００ｍ／秒の線速度に加速し
、炉軸方向および／または炉軸に直角方向から二次燃料
油を導入して燃焼を完結するための二次燃焼工程、前記
二次燃焼工程で生成した完結燃焼ガス流を狭径反応域に
導き、その周縁から酸化性ガスでアトマイズ化した原料
油を噴入してカーボンブラックを生成するための反応工
程、前記反応工程で生成したカーボンブラック含有ガス
流を広径の後部反応域に流入して急冷し、反応を完結す
るための反応完結工程からなることを特徴とするカーボ
ンブラックの製造方法。 ２、原料油をアトマイズ化する酸化性ガスの酸素富化率
を、２１〜４０％の範囲に設定する請求項１記載のカー
ボンブラックの製造方法。 ３、原料油の噴入位置と同一平面に、燃料油と同一性状
の軽質炭化水素油を補助原料油として噴入する請求項１
または２記載のカーボンブラックの製造方法。[Scope of Claims] 1. A primary combustion step for generating a combustion gas flow by introducing combustion air and primary fuel oil into a wide-diameter combustion zone, and narrowing the diameter of the combustion gas flow generated in the primary combustion step. A secondary combustion step for completing combustion by introducing secondary fuel oil into the throat-shaped combustion zone, accelerating it to a linear velocity of at least 100 m/s, and introducing it from the direction of the furnace axis and/or from the direction perpendicular to the furnace axis. , a reaction step for producing carbon black by guiding the completed combustion gas flow generated in the secondary combustion step into a narrow-diameter reaction zone and injecting raw material oil atomized with an oxidizing gas from the periphery thereof; A method for producing carbon black, comprising a reaction completion step in which a carbon black-containing gas stream generated in the process flows into a wide-diameter rear reaction zone and is rapidly cooled to complete the reaction. 2. The method for producing carbon black according to claim 1, wherein the oxygen enrichment rate of the oxidizing gas for atomizing the raw material oil is set in the range of 21 to 40%. 3. Claim 1, in which a light hydrocarbon oil having the same properties as the fuel oil is injected as an auxiliary feedstock oil in the same plane as the injection position of the feedstock oil.
Or the method for producing carbon black according to 2.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1286066A JP2835751B2 (en) | 1989-11-02 | 1989-11-02 | Method for producing carbon black |
| KR1019900017375A KR950011799B1 (en) | 1989-11-02 | 1990-10-29 | Process for the manufacture of carbon black |
| FR9013516A FR2653775A1 (en) | 1989-11-02 | 1990-10-31 | Process for the manufacture of a carbon black |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1286066A JP2835751B2 (en) | 1989-11-02 | 1989-11-02 | Method for producing carbon black |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03146568A true JPH03146568A (en) | 1991-06-21 |
| JP2835751B2 JP2835751B2 (en) | 1998-12-14 |
Family
ID=17699512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1286066A Expired - Fee Related JP2835751B2 (en) | 1989-11-02 | 1989-11-02 | Method for producing carbon black |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2835751B2 (en) |
| KR (1) | KR950011799B1 (en) |
| FR (1) | FR2653775A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011096378A1 (en) * | 2010-02-05 | 2011-08-11 | 東海カーボン株式会社 | Carbon black, method for producing carbon black, and rubber composition |
| CN102850826A (en) * | 2012-09-14 | 2013-01-02 | 山西绛县申王化工有限公司 | Preparation process of pigment carbon black, and combustion furnace thereof |
| CN102977644A (en) * | 2012-12-09 | 2013-03-20 | 龙星化工股份有限公司 | Mixing easily-dispersable super wear-resisting carbon black and production process thereof |
| CN102977643A (en) * | 2012-12-09 | 2013-03-20 | 龙星化工股份有限公司 | Mixing easily-dispersable intermediate super wear-resisting carbon black and production process thereof |
| CN102993789A (en) * | 2012-12-09 | 2013-03-27 | 龙星化工股份有限公司 | Universal carbon black with high vulcanized rubber elongation and production process for same |
| JP2016512849A (en) * | 2013-03-15 | 2016-05-09 | オリオン エンジニアード カーボンズ ゲーエムベーハーＯｒｉｏｎ Ｅｎｇｉｎｅｅｒｅｄ Ｃａｒｂｏｎｓ ＧｍｂＨ | Carbon black composition |
| 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 |
| CN112745700A (en) * | 2021-01-13 | 2021-05-04 | 无锡东恒新能源科技有限公司 | Method and apparatus for producing carbon black |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2954495T3 (en) | 2019-06-25 | 2023-11-22 | Orion Eng Carbons Gmbh | A process for producing carbon black and related furnace reactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1259164A (en) * | 1982-08-30 | 1989-09-12 | E. Webb Henderson | Carbon blacks and method and apparatus for their production |
-
1989
- 1989-11-02 JP JP1286066A patent/JP2835751B2/en not_active Expired - Fee Related
-
1990
- 1990-10-29 KR KR1019900017375A patent/KR950011799B1/en not_active IP Right Cessation
- 1990-10-31 FR FR9013516A patent/FR2653775A1/en active Granted
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011096378A1 (en) * | 2010-02-05 | 2011-08-11 | 東海カーボン株式会社 | Carbon black, method for producing carbon black, and rubber composition |
| JP2011162596A (en) * | 2010-02-05 | 2011-08-25 | Tokai Carbon Co Ltd | Carbon black, method for producing the same and rubber composition |
| US9145482B2 (en) | 2010-02-05 | 2015-09-29 | Tokai Carbon Co., Ltd. | Carbon black, method for producing carbon black, and rubber composition |
| CN102850826A (en) * | 2012-09-14 | 2013-01-02 | 山西绛县申王化工有限公司 | Preparation process of pigment carbon black, and combustion furnace thereof |
| CN102977644A (en) * | 2012-12-09 | 2013-03-20 | 龙星化工股份有限公司 | Mixing easily-dispersable super wear-resisting carbon black and production process thereof |
| CN102977643A (en) * | 2012-12-09 | 2013-03-20 | 龙星化工股份有限公司 | Mixing easily-dispersable intermediate super wear-resisting carbon black and production process thereof |
| CN102993789A (en) * | 2012-12-09 | 2013-03-27 | 龙星化工股份有限公司 | Universal carbon black with high vulcanized rubber elongation and production process for same |
| JP2016512849A (en) * | 2013-03-15 | 2016-05-09 | オリオン エンジニアード カーボンズ ゲーエムベーハーＯｒｉｏｎ Ｅｎｇｉｎｅｅｒｅｄ Ｃａｒｂｏｎｓ ＧｍｂＨ | Carbon black composition |
| JP2019077872A (en) * | 2013-03-15 | 2019-05-23 | オリオン エンジニアード カーボンズ ゲーエムベーハーＯｒｉｏｎ Ｅｎｇｉｎｅｅｒｅｄ Ｃａｒｂｏｎｓ ＧｍｂＨ | Carbon black compositions, method for obtaining the same, furnace reactor used in the method, use of carbon black compositions, polymer compositions comprising the compositions, and pneumatic tire comprising the polymer compositions |
| 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 |
| CN112745700A (en) * | 2021-01-13 | 2021-05-04 | 无锡东恒新能源科技有限公司 | Method and apparatus for producing carbon black |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2653775B1 (en) | 1994-04-22 |
| KR910009846A (en) | 1991-06-28 |
| KR950011799B1 (en) | 1995-10-10 |
| FR2653775A1 (en) | 1991-05-03 |
| JP2835751B2 (en) | 1998-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3490869A (en) | Vortex reactor for carbon black manufacture | |
| US4391789A (en) | Carbon black process | |
| JPS58225139A (en) | Rubber composition for tire | |
| KR950004905B1 (en) | Process for producing carbon black and apparatus therefor | |
| CA1084670A (en) | Procedure and device for the preparation of carbon black | |
| US20220259436A1 (en) | A process for producing carbon black and related furnace reactor | |
| JPH03146568A (en) | Production of carbon black | |
| US2769692A (en) | Carbon black process and apparatus | |
| EP2563864B1 (en) | Carbon black reactor | |
| JP2835750B2 (en) | Method for producing carbon black | |
| US5262146A (en) | Method for producing carbon black | |
| US20020090325A1 (en) | Apparatus and method for producing carbon black, and furnace combustion apparatus and furnace combustion method | |
| US4316881A (en) | Carbon black process utilizing an improved burner | |
| JPH04264165A (en) | Process and apparatus for producing carbon black | |
| US3565586A (en) | Apparatus for producing carbon black | |
| US2957755A (en) | Method of producing carbon black | |
| JP2004269659A (en) | Material oil supply nozzle for manufacturing carbon black, and carbon black manufacturing apparatus and method using the same | |
| JP4780489B2 (en) | Raw material oil injection nozzle for carbon black production | |
| JP2004269777A (en) | Nozzle for supplying raw oil for manufacturing carbon black, apparatus for manufacturing carbon black therewith, and method for manufacturing carbon black | |
| JP4068374B2 (en) | Carbon black production apparatus and method | |
| JPH07102185A (en) | Production of carbon black | |
| JPH03137168A (en) | Production of carbon black | |
| EP0392121A2 (en) | Carbon black reactor with an elongated choke and method for producing carbon black therewith | |
| JP2004269717A (en) | Apparatus and method for producing carbon black | |
| US3690831A (en) | Method of preparing carbon black of large particle size and low structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |