JPH059404A - Preparation of carbon black - Google Patents

Preparation of carbon black

Info

Publication number
JPH059404A
JPH059404A JP18939291A JP18939291A JPH059404A JP H059404 A JPH059404 A JP H059404A JP 18939291 A JP18939291 A JP 18939291A JP 18939291 A JP18939291 A JP 18939291A JP H059404 A JPH059404 A JP H059404A
Authority
JP
Japan
Prior art keywords
carbon black
reaction
raw material
diameter
furnace
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.)
Pending
Application number
JP18939291A
Other languages
Japanese (ja)
Inventor
Katsuyuki Yamaguchi
勝之 山口
Fumio Takemura
文男 竹村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Carbon Co Ltd
Original Assignee
Tokai Carbon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokai Carbon Co Ltd filed Critical Tokai Carbon Co Ltd
Priority to JP18939291A priority Critical patent/JPH059404A/en
Publication of JPH059404A publication Critical patent/JPH059404A/en
Pending legal-status Critical Current

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  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

PURPOSE:To efficiently produce carbon black having a broader aggregate size distribution by operating a furnace in an improved manner. CONSTITUTION:The title process comprises the steps of combustion, feedstock oil injection, reaction, and reaction termination. The feedstock oil injection step is conducted in a throat part which consists of a cooling cell having a double-wall structure made of a metal and having a heat exchange function. Feedstock oil is injected from the circumference into the throat part at the depth corresponding to 10-40% of the diameter of the throat part. The air preheated by heat exchange by the cooling cell can be circulated and used as a combustion supporting gas for fuel.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、省エネルギータイヤ用
に要求される巾広いアグリゲート凝集体分布を有するカ
ーボンブラックを効率よく得るための工業的な製造方法
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial production method for efficiently obtaining carbon black having a wide distribution of aggregate aggregates required for energy-saving tires.

【0002】[0002]

【従来の技術】近時、自動車の高性能化はタイヤ部材と
してのカーボンブラックにも厳しい特性要求を課してお
り、例えば省エネルギータイヤ用に対しては可及的にア
グリゲート凝集体分布がブロード化した性状のカーボン
ブラックが強く開発要請されている。
2. Description of the Related Art In recent years, as the performance of automobiles has been improved, carbon black as a tire member has also been required to have strict property requirements. For example, for energy-saving tires, the aggregate aggregate distribution should be as broad as possible. There is a strong demand for the development of carbon black having the changed properties.

【0003】従来、このような巾広いアグリゲート凝集
体分布のカーボンブラックを製造する手段として、原料
炭化水素油を発生炉の炉軸方向に多段に分割導入する方
法が有効とされている。例えば、米国特許第4071496 号
明細書にはベンチュリ型カーボンブラック製造炉を用
い、スロート域ベンチュリ後方拡大部と同出口広径円筒
拡大部へ炉周辺から放射状に原料油を分割導入する方法
によりアグリゲート凝集体分布をブロード化したカーボ
ンブラックを得ることが開示されている。英国特許第21
51605 号明細書には、ベンチュリ型カーボンブラック製
造炉の前方収斂部および狭径スロート部へ原料油を2段
に分割導入することによりアグリゲート凝集体分布をブ
ロード化させる低ヒステリシスカーボンブラックの製造
方法が示されている。また、特開平3−137167号公報に
は、テーパー形状炉のテーパー部分に原料油を2段に分
割導入し、かつ2段目の原料油を炉内に導入する噴出角
度を特定範囲に規制することによりブロード化したアグ
リゲート凝集体分布のカーボンブラックを得るという本
出願人により開発された製造技術が開示されている。
Conventionally, as a means for producing carbon black having such a wide aggregate distribution of aggregates, a method in which the raw hydrocarbon oil is introduced in multiple stages in the axial direction of the production furnace has been effective. For example, in U.S. Pat.No. 4071496, a venturi-type carbon black manufacturing furnace is used, and the feed oil is radially divided and introduced from the furnace periphery into the venturi rear expansion part and the outlet wide-diameter cylindrical expansion part in the throat area. It is disclosed to obtain a carbon black having a broad aggregate distribution. British Patent No. 21
No. 51605 describes a method for producing a low-hysteresis carbon black in which the feedstock oil is divided into two stages and introduced into the front converging part and the narrow-diameter throat part of a venturi-type carbon black manufacturing furnace to broaden the aggregate aggregate distribution. It is shown. Further, in Japanese Patent Laid-Open No. 3-137167, the feedstock oil is divided into two stages and introduced into a tapered portion of a tapered furnace, and the jet angle at which the second stage feedstock oil is introduced into the furnace is restricted to a specific range. A manufacturing technique developed by the applicant of the present invention is disclosed, whereby a carbon black having a broad aggregated aggregate distribution is obtained.

【0004】これら先行技術は、いずれも原料油を分割
導入して各注入域に温度分布を持たせることを共通要素
としているが、分割導入に必要な多数本の原料油注入ノ
ズル(二重筒水冷方式)を設置することはノズル位置近
辺の高温炉内において炉壁レンガ面に局所的な冷却現象
を生じさせ、また炉頭燃焼域で生成した燃焼ガスの流れ
に乱れが起きるため、操業面での難点となるコークス化
等の発生を促す。
In all of these prior arts, the common element is to introduce raw material oil in a divided manner so as to have a temperature distribution in each injection area. However, a large number of raw material oil injection nozzles (double cylinders) required for the divided introduction are used. Installing a water-cooling system causes a local cooling phenomenon on the brick wall of the furnace wall in the high temperature furnace near the nozzle position, and the flow of the combustion gas generated in the furnace head combustion region is disturbed, so that the operation surface Encourage the occurrence of coking, which is a difficulty in

【0005】また、従来のカーボンブラック製造炉は、
炉の内壁が耐火レンガによって構築されているが、この
内張耐火材は最高温度部位でも耐火温度が約1900℃のア
ルミナ系 (ハイアルミナ質または超高アルミナ質) レン
ガが適用されているため、2000℃を越えるような燃焼ガ
ス流に接触させた場合には溶損などの現象が生じて炉操
業ができなくなる。このため、炉体を強制冷却する等の
方法で内張耐火炉材の保護を図る対応がなされており、
例えばカーボンブラック製造炉の本体をスチール製の2
筒構造とし、内筒部分にレンガを内張したうえで二重筒
間隙に空気を導入して炉冷し、ここで予熱された空気を
燃焼用空気として循環使用するプロセス(米国特許第30
87796 号明細書) 、テーパー型カーボンブラック製造炉
の内張レンガ内にスチール製コイルを配置し、コイル内
に冷却水を送入するプロセス (米国特許第4619812 号明
細書) などが提案されている。
Further, the conventional carbon black manufacturing furnace is
The inner wall of the furnace is constructed of refractory bricks, but this lined refractory material is made of alumina-based (high-alumina or ultra-high-alumina) bricks with a refractory temperature of about 1900 ° C even at the highest temperature site. When it is brought into contact with a combustion gas flow exceeding 2000 ° C, phenomena such as melting loss occur and the furnace cannot operate. For this reason, measures have been taken to protect the lining refractory material by methods such as forced cooling of the furnace body,
For example, the body of the carbon black manufacturing furnace is made of steel
A process in which a tubular structure is used, bricks are lined in the inner tubular portion, air is introduced into the double tubular gap to cool the furnace, and preheated air is circulated and used as combustion air (US Patent No. 30
No. 87796), a process of placing a steel coil in the lining brick of a taper type carbon black manufacturing furnace and feeding cooling water into the coil (US Pat.No. 4619812) has been proposed. .

【0006】前記の炉体を強制冷却する方法は、内張耐
火材のライフを効果的に延命化させることができるが、
炉構造としていずれもアルミナ系の耐火レンガを炉本体
に内張している関係で燃焼ガスの高温水準に限度があ
る。そのうえ、レンガ構築による炉体の場合には、操業
中にレンガの破片が剥離落下する現象(スポーリング損
傷)が避けられず、これがグリットとして生成カーボン
ブラック中に混在して製品不良を生じる原因となる。
The above method of forcibly cooling the furnace body can effectively prolong the life of the refractory lining material,
As for the furnace structure, there is a limit to the high temperature level of the combustion gas due to the fact that alumina-based refractory bricks are lined inside the furnace body. In addition, in the case of a brick-built furnace body, the phenomenon that splinters of bricks peel off during operation (spalling damage) is unavoidable, and this is a cause of product defects due to being mixed in the carbon black produced as grit. Become.

【0007】[0007]

【発明が解決しようとする課題】本発明は、従来の炉構
造とは異なり、原料油注入域を形成する狭径スロート部
分を内張耐火材を使用しない金属製の強制冷却二重筒構
造に設計した炉を用い、原料油を狭径スロート部の特定
深さに注入する条件を設定することによってブロード化
したアグリゲート凝集体分布をもつカーボンブラックを
優れた操業性で製造することを可能にしたものである。
The present invention is different from the conventional furnace structure in that the narrow-diameter throat portion forming the feed oil injection area is formed into a metal forced cooling double cylinder structure which does not use a lining refractory material. By using the designed furnace and setting the conditions for injecting the feedstock oil to the specified depth of the narrow throat, it is possible to produce carbon black with broad aggregate aggregate distribution with excellent operability. It was done.

【0008】したがって本発明の目的は、省エネルギー
タイヤ用として要求される巾広いアグリゲート凝集体分
布を備える性状のカーボンブラックを生産性よく製造す
る方法を提供することにある。
[0008] Therefore, an object of the present invention is to provide a method for producing carbon black having a wide distribution of aggregate aggregates required for energy-saving tires with high productivity.

【0009】[0009]

【課題を解決するための手段】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、燃料
を燃焼させて高温燃焼ガスを生成させる燃焼工程、狭径
スロート部で高温燃焼ガス流に原料炭化水素を噴射する
原料油導入工程、原料炭化水素を熱分解反応によりカー
ボンブラックに転化させる反応工程、反応ガスを急冷し
て熱分解反応を終結させる反応停止工程からなるプロセ
スにおいて、前記原料油導入工程を形成する狭径スロー
ト部を熱交換機能を備える金属製二重筒構造の冷却セル
で構成し、原料油を狭径スロート部直径の10〜40%に相
当する深さ位置に周辺から注入することを構造上の特徴
とする。
The method for producing carbon black according to the present invention for achieving the above object comprises a combustion step of combusting a fuel to generate a high temperature combustion gas, and a high temperature combustion gas flow in a narrow throat section. In a process comprising a feed oil introduction step of injecting a feed hydrocarbon into the, a reaction step of converting the feed hydrocarbon into carbon black by a pyrolysis reaction, and a reaction stopping step of quenching the reaction gas to terminate the pyrolysis reaction, the feed material The narrow throat part that forms the oil introduction process is composed of a cooling cell with a metal double-cylinder structure that has a heat exchange function, and the raw material oil is surrounded by a depth position corresponding to 10 to 40% of the diameter of the narrow throat part. The structural feature is to inject from.

【0010】本発明の前提プロセスとなる燃焼工程、原
料油導入工程、反応工程および反応停止工程は、従来技
術と相違はないが、本発明の第1の構成的要件は、前記
の工程において原料油導入工程の狭径スロート部を熱交
換機能を備える金属製二重筒構造の冷却セルとして構成
した炉を用いる点にある。この要件は原料油を導入する
狭径スロート部を直接的に周囲から強制冷却することに
よって該部位の軸方向および断面方向における広い温度
分布を形成し、生成するカーボンブラックのアグリゲー
ト凝集体分布をブロード化させるためのものである。冷
却セルは、例えばステンレス鋼、銅、インコネル等の金
属材料により冷却媒体の送入管および排出管を備えるジ
ャケット形態に形成されるが、その仕様は空気などの冷
媒が効率よく熱交換されるような管内流速などを勘案し
て適宜に設計される。この際、セル内での局部加熱を生
じさせないため、可及的にデッドスペースのない形状に
設計することが好ましい。
The combustion process, the feedstock oil introduction process, the reaction process and the reaction termination process, which are the prerequisite processes of the present invention, are not different from those of the prior art, but the first constitutional requirement of the present invention is that the raw material in the above process is used. The point is to use a furnace in which the narrow-diameter throat portion in the oil introduction step is configured as a cooling cell having a metal double-cylinder structure having a heat exchange function. This requirement is to form a wide temperature distribution in the axial direction and cross-sectional direction of the site by forcibly cooling the narrow-diameter throat part into which the feedstock is introduced directly from the surroundings, and to generate the aggregate aggregate distribution of the generated carbon black. It is for broadening. The cooling cell is formed of a metal material such as stainless steel, copper, or Inconel in a jacket shape having a cooling medium inlet pipe and a cooling medium discharge pipe. Its specifications are such that a refrigerant such as air can be efficiently heat-exchanged. It is designed appropriately in consideration of the flow velocity in the pipe. At this time, in order to prevent local heating in the cell, it is preferable to design the shape as dead space as possible.

【0011】冷却媒体には空気もしくは酸素富化空気が
用いられる。この場合燃焼効率を高めるために、冷却セ
ル内に送入され熱交換機能により熱せられたこれら媒体
を燃料の支燃ガスとして循環使用することが好ましい。
装置的には、冷却媒体の排出管から燃料供給系統に至る
循環経路を設置することで足りる。
Air or oxygen-enriched air is used as the cooling medium. In this case, in order to increase the combustion efficiency, it is preferable to circulate and use these media, which are fed into the cooling cell and heated by the heat exchange function, as the combustion supporting gas of the fuel.
In terms of equipment, it is sufficient to install a circulation path from the cooling medium discharge pipe to the fuel supply system.

【0012】本発明の第2の構成要件は、原料油を前記
狭径スロート部直径の10〜40%に相当する深さ位置に周
辺から注入することである。この条件は原料油を熱分解
開始温度を越え、かつ温度勾配の大きな領域へ導入して
生成カーボンブラックのアグリゲート凝集体分布を確実
にブロード化するためのもので、原料油注入位置が狭径
スロート部直径の10%未満のセル内壁近傍であると熱分
解反応が円滑に進行せずに未燃焼炭化水素分およびグリ
ット発生を増大させ、時にはセル内壁にコークスが多量
に付着して管閉塞などの操業トラブルを招く。他方、狭
径スロート部直径の40%を越えるような中心部への原料
油注入は強制冷却セルによる断面方向の温度分布が活用
されなくなって生成カーボンブラックのアグリゲート凝
集体分布がブロード化しなくなる。
The second constituent feature of the present invention is to inject the raw material oil from the periphery into a depth position corresponding to 10 to 40% of the diameter of the narrow throat portion. This condition is to ensure that the distribution of aggregate aggregates in the carbon black produced is broadened by introducing the feedstock above the temperature at which pyrolysis starts and with a large temperature gradient. If it is less than 10% of the throat diameter near the cell inner wall, the pyrolysis reaction does not proceed smoothly and the amount of unburned hydrocarbons and grit increases, and sometimes a large amount of coke adheres to the cell inner wall to block the pipe. Cause operational problems. On the other hand, when the feedstock oil is injected into the central portion where the diameter exceeds 40% of the diameter of the narrow throat portion, the temperature distribution in the cross-sectional direction due to the forced cooling cell is not utilized, and the aggregate aggregate distribution of the produced carbon black does not become broad.

【0013】[0013]

【作用】本発明における狭径スロート部を熱交換機能を
備える金属製二重筒構造の冷却セルで構成した原料導入
域では、強制冷却の作用で燃焼ガス流とセル内面の界面
に温度差に基づく境膜が形成され、炉内断面中央部分を
吹き抜ける燃焼ガス温度を極度に低下させることなく、
また冷却セルの構成金属材料を損傷させずに高温燃焼ガ
ス流が流下する。この際、冷却セルは空冷条件によって
炉内の軸方向および断面方向の温度分布を制御すること
ができるから、従来技術のように原料油を多段に分割導
入する必要なく熱分解温度にアグルゲート凝集体分布を
ブロード化させるための分布巾を形成することが可能と
なる。
In the raw material introduction zone in which the narrow-diameter throat portion of the present invention is constituted by the cooling cell having the metal double-cylinder structure having the heat exchange function, the forced cooling action causes a temperature difference at the interface between the combustion gas flow and the cell inner surface. Based on the formation of a boundary film, without extremely lowering the temperature of the combustion gas blown through the central part of the furnace cross section,
Further, the high temperature combustion gas flow flows down without damaging the constituent metal material of the cooling cell. At this time, since the cooling cell can control the temperature distribution in the axial direction and the cross-sectional direction in the furnace depending on the air cooling conditions, it is not necessary to divide and introduce the feedstock in multiple stages as in the prior art, and thus the aggregate temperature can be increased to the pyrolysis temperature. It is possible to form a distribution width for broadening the distribution.

【0014】上記の要件に加え、狭径スロート部直径の
10〜40%に相当する深さ位置、すなわち十分な高温燃焼
ガスが流通する温度勾配の大きな領域に原料油を周辺か
ら注入することにより、ブロード化したアグリゲート凝
集体分布を有するカーボンブラックを安定かつ効率よく
生成させることが可能となる。
In addition to the above requirements, the narrow throat diameter
Stable carbon black with broad aggregate aggregate distribution by injecting the feedstock oil from the periphery to a depth position equivalent to 10 to 40%, that is, a region with a large temperature gradient in which sufficient high temperature combustion gas flows. And it becomes possible to generate efficiently.

【0015】また、冷却セル内を流通する冷却媒体とし
て空気もしくは酸素富化空気を使用し、その熱交換作用
で予熱された前記の媒体を支燃ガスとして循環使用する
と、燃料の燃焼促進および高温化に有効に機能させるこ
とができる。
Further, when air or oxygen-enriched air is used as a cooling medium flowing in the cooling cell, and the medium preheated by its heat exchange action is circulated and used as a combustion-supporting gas, promotion of combustion of fuel and high temperature Function effectively.

【0016】[0016]

【実施例】以下、本発明の実施例を比較例と対比して説
明する。
EXAMPLES Examples of the present invention will be described below in comparison with comparative examples.

【0017】実施例1〜4、比較例1〜3 炉頭部に炉軸方向の燃焼バーナーを備えるアルミナ質耐
火レンガで内張した内径400mm(テーパー出口部直径60m
m) 、長さ500mm 、耐火断熱層の厚さ200mm の燃焼域
と、ステンレス鋼製二重筒構造の冷却セルで構成した内
径60mm、外径80mm、長さ200mm の狭径スロート部からな
る原料導入域、アルミナ/シリカ質耐火レンガで内張さ
れた内径100mm 、長さ600mm 、耐火断熱層の厚さ100mm
の反応域、およびアルミナ/シリカ質耐火レンガで内張
されクエンチ装置を備えた内径100mm、長さ1000mmの反
応停止域を連設してカーボンブラック製造炉を設置し
た。原料油噴射ノズルは狭径スロート部の周辺から装着
し、ノズル先端の注入位置がセル内を伸縮できる状態に
セットした。また、冷却セルの排出管を燃焼室に連結し
て予熱された冷却媒体は全量が支燃ガスとして消費する
循環経路に設計した。
Examples 1 to 4 and Comparative Examples 1 to 3 Inner diameter 400 mm (taper outlet diameter 60 m) lined with alumina refractory bricks equipped with combustion burners in the furnace axial direction on the furnace head.
m), 500 mm long, 200 mm thick fireproof insulation layer, and a raw material consisting of a stainless steel double-tube cooling cell with an inner diameter of 60 mm, an outer diameter of 80 mm, and a narrow throat of 200 mm in length. Introduction area, inner diameter 100mm lined with alumina / silica refractory bricks, length 600mm, fireproof heat insulation layer thickness 100mm
And a reaction stop zone of 100 mm in inner diameter and 1000 mm in length, which was lined with alumina / silica refractory bricks and equipped with a quenching device, were installed in a carbon black production furnace. The stock oil injection nozzle was mounted from around the narrow throat, and the injection position of the nozzle tip was set so that it could expand and contract inside the cell. In addition, the exhaust pipe of the cooling cell was connected to the combustion chamber, and the cooling medium preheated was designed as a circulation path in which the entire amount is consumed as combustion-supporting gas.

【0018】燃料にはプロパンを用いて燃焼バーナーか
ら供給し、冷却セルの冷却媒体には空気を用いた。原料
油は、霧化用窒素ガスとともに燃焼ガス流に対し放射状
に霧化噴射した。反応停止用のクエンチは、反応停止域
の入口から900mm 下流の位置にセットした。原料油とし
ては、比重(15/4 ℃)1.046、トルエン不溶分0.14%、相
関係数(BMCI)134 、硫黄分 0.1%、初留点 195℃、Na
イオン3.0ppm、Kイオン0.3ppmの芳香族炭化水素油を用
いた。
Propane was used as the fuel and was supplied from the combustion burner, and air was used as the cooling medium of the cooling cell. The feedstock oil was atomized and injected radially into the combustion gas stream together with the atomizing nitrogen gas. The quench for stopping the reaction was set at a position 900 mm downstream from the entrance of the reaction stopping zone. As feedstock, specific gravity (15/4 ℃) 1.046, toluene insoluble content 0.14%, correlation coefficient (BMCI) 134, sulfur content 0.1%, initial boiling point 195 ℃, Na
An aromatic hydrocarbon oil having 3.0 ppm ion and 0.3 ppm K ion was used.

【0019】上記の製造炉を用い発生条件を変えてカー
ボンブラックを製造した。なお比較例3は、従来構造の
アルミナ質耐火レンガで内張した原料導入域(内径60m
m、長さ200mm)を備える製造炉で製造した例である。各
例の製造条件を表1に、また得られたカーボンブラック
の特性を表2に示した。
Carbon black was produced using the above production furnace under different generation conditions. In Comparative Example 3, the raw material introduction area lined with an alumina refractory brick of conventional structure (inner diameter 60 m
It is an example manufactured in a manufacturing furnace having m, length 200 mm). Table 1 shows the production conditions of each example, and Table 2 shows the characteristics of the obtained carbon black.

【0020】[0020]

【表1】 [Table 1]

【0021】[0021]

【表2】 [Table 2]

【0022】表1の結果から、本発明の要件を満たす実
施例1〜4で得られるカーボンブラックはいずれも従来
法の比較例3に比べてアグリゲート凝集体分布の指標で
あるΔDstが大きく、省エネルギータイヤ用として好適
な性状を呈している。このうえ、原料注入域に耐火断熱
材を使用していないためグリット発生もなく、円滑に連
続操業することが可能である。しかし、原料油注入位置
が狭径スロート部直径に対し10%未満に比較例1では熱
分解反応が円滑に進行しないため、生成カーボンブラッ
クにはコークス状グリットが多量に含有され、炉壁にも
コークス付着が確認された。また、原料注入位置が狭径
スロート部直径に対し40%を越える深さの比較例2で
は、巾広いアグリゲート凝集体分布のカーボンブラック
を製造することはできなかった。
From the results shown in Table 1, all of the carbon blacks obtained in Examples 1 to 4 satisfying the requirements of the present invention have a larger ΔDst, which is an index of aggregate aggregate distribution, than Comparative Example 3 of the conventional method. It has suitable properties for energy-saving tires. In addition, since no refractory heat insulating material is used in the raw material injecting area, no grit is generated and smooth continuous operation is possible. However, the feed oil injection position was less than 10% of the diameter of the narrow throat portion. In Comparative Example 1, the pyrolysis reaction did not proceed smoothly, and thus the produced carbon black contained a large amount of coke-like grit and also the furnace wall. Coke adhesion was confirmed. Further, in Comparative Example 2 in which the raw material injection position was more than 40% of the diameter of the narrow throat, it was not possible to produce a carbon black having a wide aggregate aggregate distribution.

【0023】[0023]

【発明の効果】以上のとおり、本発明に係るカーボンブ
ラックの製造方法に従えば、アグリゲート凝集体分布が
ブロード化した性状のカーボンブラックを常に安定した
炉操業で効率よく製造することができる。したがって、
省エネルギータイヤ用として好適なカーボンブラックの
量産技術として極めて有用である。
As described above, according to the method for producing carbon black according to the present invention, carbon black having a broad aggregate distribution of aggregates can be efficiently produced in a stable furnace operation. Therefore,
It is extremely useful as a mass production technology of carbon black suitable for energy-saving tires.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 燃料を燃焼させて高温燃焼ガスを生成さ
せる燃焼工程、狭径スロート部で高温燃焼ガス流に原料
炭化水素を噴射する原料油導入工程、原料炭化水素を熱
分解反応によりカーボンブラックに転化させる反応工
程、反応ガスを急冷して熱分解反応を終結させる反応停
止工程からなるプロセスにおいて、前記原料油導入工程
を形成する狭径スロート部を熱交換機能を備える金属製
二重筒構造の冷却セルで構成し、原料油を狭径スロート
部直径の10〜40%に相当する深さ位置に周辺から注入す
ることを特徴とするカーボンブラックの製造方法。
1. A combustion process in which a fuel is burned to generate a high temperature combustion gas, a raw material oil introduction process in which a raw material hydrocarbon is injected into a high temperature combustion gas stream in a narrow-diameter throat, and a carbon black is produced by a pyrolysis reaction of the raw material hydrocarbon. In the process consisting of a reaction step for converting into a raw material oil and a reaction stopping step for terminating the thermal decomposition reaction by quenching the reaction gas, a double-walled metal structure having a heat exchange function in the narrow-diameter throat part forming the feed oil introducing step. The method for producing carbon black, comprising: a cooling cell, and injecting the raw material oil from the periphery into a depth position corresponding to 10 to 40% of the diameter of the narrow throat portion.
【請求項2】 冷却セル内に冷却媒体として空気もしく
は酸素富化空気を流入し、熱交換機能により予熱された
空気もしくは酸素富化空気を燃料の支燃ガスとして循環
使用する請求項1記載のカーボンブラックの製造方法。
2. The method according to claim 1, wherein air or oxygen-enriched air is introduced into the cooling cell as a cooling medium, and the air or oxygen-enriched air preheated by the heat exchange function is circulated and used as a combustion-supporting gas for fuel. Carbon black manufacturing method.
JP18939291A 1991-07-03 1991-07-03 Preparation of carbon black Pending JPH059404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18939291A JPH059404A (en) 1991-07-03 1991-07-03 Preparation of carbon black

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18939291A JPH059404A (en) 1991-07-03 1991-07-03 Preparation of carbon black

Publications (1)

Publication Number Publication Date
JPH059404A true JPH059404A (en) 1993-01-19

Family

ID=16240542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18939291A Pending JPH059404A (en) 1991-07-03 1991-07-03 Preparation of carbon black

Country Status (1)

Country Link
JP (1) JPH059404A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100312609B1 (en) * 1994-07-23 2002-09-04 코리아카본블랙 주식회사 Reactor for producing carbon black
JP2013023535A (en) * 2011-07-19 2013-02-04 Yokohama Rubber Co Ltd:The Rubber composition for tire
JP2013023536A (en) * 2011-07-19 2013-02-04 Yokohama Rubber Co Ltd:The Rubber composition for tire
CN106189377A (en) * 2016-08-31 2016-12-07 山西永东化工股份有限公司 A kind of production method of N330 white carbon black
US10278471B2 (en) 2013-09-27 2019-05-07 Dyson Technology Limited Hand held appliance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100312609B1 (en) * 1994-07-23 2002-09-04 코리아카본블랙 주식회사 Reactor for producing carbon black
JP2013023535A (en) * 2011-07-19 2013-02-04 Yokohama Rubber Co Ltd:The Rubber composition for tire
JP2013023536A (en) * 2011-07-19 2013-02-04 Yokohama Rubber Co Ltd:The Rubber composition for tire
US10278471B2 (en) 2013-09-27 2019-05-07 Dyson Technology Limited Hand held appliance
CN106189377A (en) * 2016-08-31 2016-12-07 山西永东化工股份有限公司 A kind of production method of N330 white carbon black

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