JPS60101190A - Preparation of pitch pellet - Google Patents

Preparation of pitch pellet

Info

Publication number
JPS60101190A
JPS60101190A JP20825083A JP20825083A JPS60101190A JP S60101190 A JPS60101190 A JP S60101190A JP 20825083 A JP20825083 A JP 20825083A JP 20825083 A JP20825083 A JP 20825083A JP S60101190 A JPS60101190 A JP S60101190A
Authority
JP
Japan
Prior art keywords
pitch
cooling water
pellets
extruded
die
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
JP20825083A
Other languages
Japanese (ja)
Inventor
Yoshinori Yamane
山根 義紀
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP20825083A priority Critical patent/JPS60101190A/en
Publication of JPS60101190A publication Critical patent/JPS60101190A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prepare almost spherical and easy-to-handle pitch pellets with a good yield, by extruding molten pitch into water under specified conditions and cutting the extruded pitch by means of an underwater pelletizer. CONSTITUTION:Molten pitch at about 200 deg.C or higher prepd. in the preceding process is cooled to a viscosity of 150-400P and is extruded through a nozzle 16 of a die 8 of a pelletizer 6 (12 is a cooling water circulation box; 24 is a cooling water feeding pipe; 26 is a cooling water discharge pipe) at a speed of 20- 180cm/sec, while high pressure is being applied by a gear pump 2. The pitch extruded into cooling water is cut by a cutter 10 (22 is a cutter shaft; 20 is a driving gear) revolving at a circumferential velocity of 3m/sec or lower and is cooled with cooling water (at about 35 deg.C or lower) in a circulation box 12. Solidified pellets are taken out of the pelletizer 6.

Description

【発明の詳細な説明】 (イ)技術分野 本発明は、ピッチペレットの製造方法に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to a method for producing pitch pellets.

(ロ)従来技術 石炭を乾留してコークスを製造する際にタールが副生ず
る。副生タールから得られたピッチは電気炉用電極等と
して使用されるが、従来は次のようにして製品としてい
た。すなわち、前工程で製造されたピッチはある程度冷
却されてピッチノズルから流出降下し、冷却槽の水中で
冷却され、棒状に固化したピッチは冷却槽の底部近くに
設けたカッタ付きのスクリュコンベアによって切断され
、パケットエレベータによって冷却槽外へ搬出される。
(b) Conventional technology When carbonizing coal to produce coke, tar is produced as a by-product. Pitch obtained from by-product tar is used as electrodes for electric furnaces, etc., and has conventionally been made into products as follows. In other words, the pitch produced in the previous process is cooled to some extent and then flows out and descends from the pitch nozzle, cooled in water in the cooling tank, and the pitch solidified into rods is cut by a screw conveyor with a cutter installed near the bottom of the cooling tank. and transported out of the cooling tank by a packet elevator.

このペレッI・を乾燥して棒状としたものを最終製品と
していた。
This pellet I was dried and made into a rod shape as the final product.

しかしながら、上記のような従来のピッチペレットの製
造方法にあっては、冷却槽内においてペレットが何回も
カッタによって切断される可能性があるためペレットの
長さは100−150 mm程度にばらつき、破断面が
不規則であり、また、棒状のピッチを切断する際に粉末
、破片等が発生するため歩留りが悪いという問題点があ
った。また、この棒状のピッチペレットは、端面に角部
を有する形状であるため、この角部が欠けやすく輸送、
貯蔵等の面で不利であった。
However, in the conventional method for producing pitch pellets as described above, the length of the pellets varies from about 100 to 150 mm because the pellets may be cut by a cutter many times in the cooling tank. There were problems in that the fracture surface was irregular and powder and debris were generated when cutting the bar-shaped pitches, resulting in poor yield. In addition, these rod-shaped pitch pellets have corners on their end faces, so these corners are easily chipped during transportation.
It was disadvantageous in terms of storage, etc.

(ハ)発明の1」的 本発明は、形状が略球状で一定であり、歩留りが良く、
取扱いが容易なピッチペレットを製造するブ〕ツノ4を
イ与ることを目自勺としている。
(C) Invention 1 The present invention has a substantially spherical and constant shape, has a good yield,
The aim is to produce a horn 4 that produces pitch pellets that are easy to handle.

(ニ)発明の構成 本発明によるピッチペレットの製造方法は、石炭からコ
ークスを製造する際に副生ずるタールから得られる溶融
ピッチの温度を調節することによりピッチ粘度を150
〜400ポアズとし、このピッチをギアポンプ又は押出
機によって高圧で水中カッI・方式のベレタイジング装
置のダイに供給し、ダイからピッチ吐出速度20〜18
0cm/Sで35°C以下の温度の水中に押出すと同時
に周速3 m / s以下で回転するカッタによって切
断し、略球状のピンチペレットを製造する。
(d) Structure of the Invention The method for producing pitch pellets according to the present invention reduces the pitch viscosity to
~400 poise, and this pitch is supplied at high pressure by a gear pump or extruder to the die of an underwater cup type beretizing device, and the pitch discharge rate from the die is 20 to 18.
It is extruded at 0 cm/s into water at a temperature of 35° C. or less and simultaneously cut by a cutter rotating at a circumferential speed of 3 m/s or less to produce approximately spherical pinch pellets.

(ホ)実施例 以下、本発明の実施例を添付図面の第1図に基づいて説
明する。
(E) Embodiments Hereinafter, embodiments of the present invention will be described based on FIG. 1 of the accompanying drawings.

第1図に本発明方法を実施するための装置を示す。ギア
ポンプ2の圧出部4にペレタイジング装置6が連結され
ている。ペレタイジング装置6は、ダイ8、カッタ10
、冷却水循環箱12、モータ14等を有している。ダイ
8は圧出部4に連結され、ダイ8のノズル16は冷却水
循環箱12内にピッチを押出すように配置されている。
FIG. 1 shows an apparatus for carrying out the method of the invention. A pelletizing device 6 is connected to an extrusion section 4 of the gear pump 2. The pelletizing device 6 includes a die 8 and a cutter 10.
, a cooling water circulation box 12, a motor 14, etc. The die 8 is connected to the extrusion section 4, and the nozzle 16 of the die 8 is arranged to extrude pitch into the cooling water circulation box 12.

カッタ10はダイ8のノズル16に対面するように冷却
水循環箱12内に配置されている。カッタIOはベルト
18、カッタ駆動装置20及び力・ンタ軸22を介して
モータ14によって回転駆動される。冷却水循環箱12
内には冷却水供給管24からん動水が供給され、冷却水
循環箱12内の冷却水は冷却水排出管26から排出され
るようにしである。
The cutter 10 is arranged in the cooling water circulation box 12 so as to face the nozzle 16 of the die 8. The cutter IO is rotationally driven by a motor 14 via a belt 18, a cutter drive device 20, and a force/interval shaft 22. Cooling water circulation box 12
Peristaltic water is supplied into the cooling water circulation box 12 from a cooling water supply pipe 24, and the cooling water inside the cooling water circulation box 12 is discharged from a cooling water discharge pipe 26.

前工程で製造された通常200°C以上の溶融ピッチは
、粘度が150〜400ポアズとなるように図示してな
いターナによって冷却されて所定温度に調節され、ギア
ポンプ2に供給され高圧にされてシリンダ先端圧出部4
に送られる。高圧のピッチはダイ8のノズル16から2
0〜180cm / sの吐出速度で押出される。35
°C以下の冷却水が循環する冷却水循環箱12内に押出
されたピッチは押出されると同時に3 m / s以下
の周速で回転するカッタ10によって切断される。これ
によって、ピッチは略球状のペレットとなる。ベレット
化yれたピッチは冷却水循環箱12内の35°C以下の
冷却水によって急速に冷却されると共に輸送され、ペレ
タイジング装置6の外部に取出され最終製品として貯蔵
される。
The molten pitch produced in the previous process, usually at a temperature of 200° C. or higher, is cooled by a turner (not shown) and adjusted to a predetermined temperature so that the viscosity becomes 150 to 400 poise, and then supplied to the gear pump 2 and raised to high pressure. Cylinder tip extrusion part 4
sent to. The pitch of high pressure is from nozzle 16 of die 8 to 2.
It is extruded at a discharge speed of 0-180 cm/s. 35
The pitch extruded into a cooling water circulation box 12 in which cooling water at a temperature of .degree. As a result, the pitch becomes a substantially spherical pellet. The pelletized pitch is rapidly cooled by cooling water of 35° C. or lower in the cooling water circulation box 12 and transported, taken out of the pelletizing device 6 and stored as a final product.

なお、」−記説明においては、溶融ピッチを高圧で押出
す装置としてギアポンプを用いたが、樹1指の押出し等
に使用されるスクリュ式押出機と同様のものを使用して
も差し支えない。
In addition, in the explanation described in "-", a gear pump was used as a device for extruding the molten pitch at high pressure, but it is also possible to use a device similar to a screw type extruder used for extruding the first finger of a tree.

ピッチ粘度はピッチ温度を制御することにより設定する
が、ピッチ温度を熱電対等で検出し、前述のように当初
は200 ’C以りのピッチをターナで冷却して調整す
る。ピッチは軟化点(一般に70−120°C)に応じ
て粘度一温度の関係が相違するので、ピンチの性状に応
じて温度を調節し、所定のピッチ粘度となるようにする
必要がある。
The pitch viscosity is set by controlling the pitch temperature, and the pitch temperature is detected with a thermocouple or the like, and as described above, the pitch, which is initially above 200'C, is adjusted by cooling it with a turner. Since the relationship between viscosity and temperature of pitch differs depending on the softening point (generally 70-120°C), it is necessary to adjust the temperature depending on the nature of the pinch to obtain a predetermined pitch viscosity.

j−記のような本発明によるピッチペレットの製造方法
には次のような利点がある。
The method for producing pitch pellets according to the present invention as described in J-J has the following advantages.

運転条件を」二記のように設定することによって略球状
のピッチペレットを得ることができ、しかも形状は一定
しており、ばらつきがほとんどない。また、粘度が前述
の範囲にあればダイの目づまりを発生することもない。
By setting the operating conditions as described in section 2, pitch pellets having a substantially spherical shape can be obtained, and the shape is constant with almost no variation. Furthermore, if the viscosity is within the above range, clogging of the die will not occur.

更に、本発明方法によると、カッティング速度が適正で
あるので、粉末、小破片がほとんど発生しないばかりで
なく。
Furthermore, according to the method of the present invention, since the cutting speed is appropriate, not only powder and small pieces are hardly generated.

角ばった部分のない形状のペレットにすることができ輸
送中に砕けて粉末や小破片が生じるおそれもないので、
歩留りが向上する。また、急速に冷却されるため、ピッ
チペレ・ント同志が互いに付着することもない。
It can be made into pellets with no angular parts, and there is no risk of them breaking into powder or small pieces during transportation.
Yield is improved. In addition, since the pitch pellets are rapidly cooled, pitch pellets do not stick to each other.

(ハ)発明の詳細 な説明してきたように、本発明によると、石炭からコー
クスを製造する際に副生ずるタールから得られる溶融ピ
ッチの温度を調節することによりピッチ粘度を150〜
400ポアズとし、このピッチをギアポンプ又は押出機
によって高圧で水中カット方式のベレタイジング装置の
ダイに供給し、ダイからピッチ吐出速度20〜180c
m/Sで35°C以下の温度の水中に押出すと同時に周
速3 m / s以下で回転するカッタによって切断す
ることによりピッチペレットとするようにしたので、略
球状の形のそろったピッチペレットを得ることができ、
破片、粉末等を発生せず歩留りも向上し、取扱いも便利
になるという効果が得られる。また、ダイの目つまり、
ペレット同志の付着等も発生しない。
(c) As described in detail, according to the present invention, by adjusting the temperature of molten pitch obtained from tar that is by-produced when producing coke from coal, the pitch viscosity can be increased from
The pitch is set at 400 poise, and this pitch is supplied under high pressure to the die of an underwater cutting type beretizing device using a gear pump or an extruder, and the pitch is discharged from the die at a rate of 20 to 180 c.
Pitch pellets are made by extruding them into water at a temperature of 35°C or less at m/s and cutting them with a cutter rotating at a circumferential speed of 3 m/s or less. You can get pellets,
The effect is that no fragments, powder, etc. are generated, the yield is improved, and handling is convenient. Also, the number of die,
There is no occurrence of adhesion of pellets to each other.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明方法を実施するための装置を示す図であ
る。 2φ・−ギアポンプ、4・+I@圧出部、6・・・ペレ
タイジング装置、8・・・ダイ、lO・・・カッタ、1
2・−・冷却水循環箱、14−・拳モータ、16−・・
ノズル、18・・・ベルト、20・・拳力・ンタ駆動装
置、22・・拳力・ンタ軸、24・・・冷却水供給管、
26・・・冷却水排出I庁。
FIG. 1 shows an apparatus for carrying out the method of the invention. 2φ・-gear pump, 4・+I@pressing part, 6...pelletizing device, 8...die, lO...cutter, 1
2.--Cooling water circulation box, 14-.Fist motor, 16-.
Nozzle, 18... Belt, 20... Fist/torter drive device, 22... Fist/torter shaft, 24... Cooling water supply pipe,
26...Cooling water discharge I agency.

Claims (1)

【特許請求の範囲】[Claims] 石炭からコークスを製造する際に副生ずるタールから得
られる溶融ピッチの温度を調節することによりピンチ粘
度を150〜400ポアズとし、このピッチをギアポン
プ又は押出機によって高圧で水中カーV i方式のベレ
タイジング装w1のダイに供給し、グイからピッチ吐出
速度20〜180cm/sで35°C以下の温度の水中
に押出すと同時に周速3 m / s以下で回転するカ
ッタによって切断し、略球状のピッチベレットとするピ
ッチベレットの製造方法。
The pinch viscosity is set to 150 to 400 poise by adjusting the temperature of the molten pitch obtained from the tar that is produced as a by-product when producing coke from coal, and this pitch is then heated at high pressure by a gear pump or extruder into an underwater car Vi type beretizing device. The material is supplied to the die w1, extruded from the gou at a pitch discharge speed of 20 to 180 cm/s into water at a temperature of 35°C or less, and simultaneously cut by a cutter rotating at a circumferential speed of 3 m/s or less to form an approximately spherical pitch. A method for producing pitch pellets.
JP20825083A 1983-11-08 1983-11-08 Preparation of pitch pellet Pending JPS60101190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20825083A JPS60101190A (en) 1983-11-08 1983-11-08 Preparation of pitch pellet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20825083A JPS60101190A (en) 1983-11-08 1983-11-08 Preparation of pitch pellet

Publications (1)

Publication Number Publication Date
JPS60101190A true JPS60101190A (en) 1985-06-05

Family

ID=16553138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20825083A Pending JPS60101190A (en) 1983-11-08 1983-11-08 Preparation of pitch pellet

Country Status (1)

Country Link
JP (1) JPS60101190A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123384A (en) * 1976-04-08 1977-10-17 Nikku Ind Co Dry pitch pelletization method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123384A (en) * 1976-04-08 1977-10-17 Nikku Ind Co Dry pitch pelletization method

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