JPH066782B2 - Carburizing process using fluidized particles and apparatus used directly to carry out it - Google Patents

Carburizing process using fluidized particles and apparatus used directly to carry out it

Info

Publication number
JPH066782B2
JPH066782B2 JP10911184A JP10911184A JPH066782B2 JP H066782 B2 JPH066782 B2 JP H066782B2 JP 10911184 A JP10911184 A JP 10911184A JP 10911184 A JP10911184 A JP 10911184A JP H066782 B2 JPH066782 B2 JP H066782B2
Authority
JP
Japan
Prior art keywords
hydrocarbon
particles
catalyst particles
retort
carburizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP10911184A
Other languages
Japanese (ja)
Other versions
JPS60251266A (en
Inventor
正佳 滝
正光 竹林
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP10911184A priority Critical patent/JPH066782B2/en
Publication of JPS60251266A publication Critical patent/JPS60251266A/en
Publication of JPH066782B2 publication Critical patent/JPH066782B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/62Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
    • C23C8/64Carburising

Description

【発明の詳細な説明】 (イ)発明の目的 〔産業上の利用分野〕 本発明は,流動粒子を用いた浸炭処理方法及びそれを実
施するのに直接使用する装置についての技術分野に属す
る。
DETAILED DESCRIPTION OF THE INVENTION (a) Object of the Invention [Industrial field of application] The present invention belongs to the technical field of a carburizing method using fluidized particles and an apparatus directly used for carrying out the method.

〔従来技術〕[Prior art]

浸炭処理方法のなかには,流動粒子を用いた浸炭処理方
法というものがある。
Among the carburizing methods, there is a carburizing method using fluidized particles.

斯かる流動粒子を用いた浸炭処理方法というのは,高温
還元雰囲気中で化学的に安定な物質でできた顆粒状の粒
子が多数集められて,そのなかには浸炭処理すべき品物
が埋没されており,次の(a),(b),(c)の三つ
によって前記品物の表面には浸炭層が形成されることを
特徴とするものである。
The carburizing method using such fluidized particles means that a large number of granular particles made of a chemically stable substance are collected in a high-temperature reducing atmosphere, in which the product to be carburized is buried. The following three (a), (b), and (c) form a carburized layer on the surface of the article.

(a)炭化水素と空気との混合ガスが前記品物と前記粒
子の集まりとのなかに供給され、加熱される。
(A) A mixed gas of hydrocarbon and air is supplied into the product and the aggregate of particles and heated.

(b)前記粒子は炭化水素の部分酸化反応によって出来
た吸熱型ガスの流れにより流動化される。
(B) The particles are fluidized by the flow of an endothermic gas produced by the partial oxidation reaction of hydrocarbons.

(c)前記品物は前吸熱型ガス中で高温に保持される。(C) The article is kept at a high temperature in the pre-endothermic gas.

ここで、高温還元雰囲気中で化学的に安定な物質の粒子
とは,例えば,アルミナ,シリカ,ジルコニア等の粒子
である。その一粒の大きさは,80メッシュから100
メッシュ(直径が147μから175μ)までの範囲に
ある。また,炭化水素としては,メタン,プロパン,ブ
タン等が用いられている。
Here, the particles of the chemically stable substance in the high temperature reducing atmosphere are, for example, particles of alumina, silica, zirconia or the like. The size of each grain is from 80 mesh to 100
It is in the range from mesh (diameter 147μ to 175μ). As the hydrocarbon, methane, propane, butane, etc. are used.

このような浸炭処理は,次の式(1),(2)で示され
るように,炭化水素が高温で酸化し,次いで式(1)に
よってできた一酸化炭素が,式(3)で示されるよう
に,分解することによってできる活性炭素(または,発
生期の炭素とも呼ばれている。一般に〔 〕を付けて表
す。)を利用して行われている。ここで,活性炭素とい
うのは,普通の炭素と違って,鉄のなかに固溶,拡散す
る(即ち,浸炭する)性質を持った炭素である。因に,
炭化水素のうちには式(4)のように熱分解するものも
あるが,式(4)によってできた炭素は活性を持たない
ため,浸炭処理には役に立たない。なお,式(1),
(2)には一つの例としてブタンが示されているが,メ
タン及びプロパン等についても全く同様である。
In such carburizing treatment, as shown in the following equations (1) and (2), hydrocarbons are oxidized at a high temperature, and then carbon monoxide produced by the equation (1) is represented by the equation (3). As described above, activated carbon (also called nascent carbon, which is generally indicated by []) generated by decomposition is used. Here, activated carbon, unlike ordinary carbon, is carbon that has the property of forming a solid solution in iron and diffusing (that is, carburizing). By the way,
Some hydrocarbons are thermally decomposed as shown in formula (4), but the carbon produced by formula (4) has no activity and is not useful for carburizing. Note that equation (1),
Butane is shown as an example in (2), but the same applies to methane and propane.

2O+C10→4CO+5H……(1) 13O+2C10 →8CO+10HO……
(2) 2CO→CO+〔C〕 ……(3) C10→2C+H+2CH ……(4) 式(1),(2)の酸化反応は,供給された炭化水素の
一部分がこのような酸化反応を起こすだけである(即
ち,前述の通り,炭化水素のうちには式(4)のように
熱分解するものもある)ため,一般に部分酸化反応と呼
ばれているものである。
2O 2 + C 4 H 10 → 4CO + 5H 2 (1) 13O 2 + 2C 4 H 10 → 8CO 2 + 10H 2 O ...
(2) 2CO → CO 2 + [C] …… (3) C 4 H 10 → 2C + H 2 + 2CH 4 …… (4) The oxidation reaction of the formulas (1) and (2) is a part of the supplied hydrocarbons. Is only called such an oxidation reaction (that is, some hydrocarbons are thermally decomposed as shown in formula (4) as described above), and therefore are generally called partial oxidation reactions. Is.

また,式(1),(2)の酸化反応が進行するために
は,ブタンと空気との混合ガスに高熱が与えられねばな
らない。言い換えると,ブタンと空気との混合ガスは熱
を吸収して始めて式(1),(2)のような酸化反応を
起こす。従って,式(1),(2)によってできるCO
とHとCOとHOとの混合ガスは,一般に吸熱型
ガスと呼ばれている。更に,ブタンと空気との混合ガス
が反応して斯かる吸熱型ガスが作られることは,“変
性”と呼ばれている。
Further, in order for the oxidation reaction of the formulas (1) and (2) to proceed, high heat must be given to the mixed gas of butane and air. In other words, the mixed gas of butane and air absorbs heat before the oxidation reaction as shown in equations (1) and (2) occurs. Therefore, the CO formed by the equations (1) and (2)
A mixed gas of H 2 and CO 2 and H 2 O is generally referred to as endothermic gas. Furthermore, the reaction of a mixed gas of butane and air to form such an endothermic gas is called "denaturation".

浸炭処理時,上記式(3)でできた活性炭素は品物の表
面からどんどん品物のなかに固溶し拡散してゆく。従っ
て,活性炭素はみるみる消費される。消費された分の活
性炭素は,式(1)によってできる一酸化炭素から供給
される。言い換えれば,一酸化炭素は活性炭素の供給源
である。従って,この一酸化炭素が多い程浸炭処理は早
く進む。
During the carburizing process, the activated carbon produced by the above formula (3) gradually dissolves into the product as a solid solution from the surface of the product and diffuses. Therefore, activated carbon is consumed exponentially. The consumed activated carbon is supplied from carbon monoxide produced by the formula (1). In other words, carbon monoxide is a source of activated carbon. Therefore, the more carbon monoxide, the faster the carburization process.

ところで,このような浸炭処理方法(即ち,流動粒子を
用いた浸炭処理方法)が工場でしばしば実施されるの
は,次の理由による。
By the way, such a carburizing method (that is, a carburizing method using fluidized particles) is often carried out in a factory for the following reason.

即ち,前記顆粒状の粒子は,前述の通利,非常に細かい
ものであるため,吸熱型ガス流れによって斯かる粒子は
流動状態となり,恰も粒子全体が液体であるかのように
振る舞う。このような状態となった顆粒状の粒子は“流
動粒子”と呼ばれている。これが,前記浸炭処理方法が
“流動粒子を用いた浸炭処理方法”と呼ばれている所以
でもある。流動粒子を用いた浸炭処理方法というのは,
顆粒状の粒子がこのように振舞う(即ち,流動粒子とな
る)性質を利用して, レトルトのなか全体を均一に加熱し, また,品物と流動粒子との接触によって品物の昇温速
度を早めている。
That is, since the granular particles are very fine as described above, the particles are brought into a fluid state by the endothermic gas flow, and the particles behave as if they were liquid. Granular particles in such a state are called “fluid particles”. This is also the reason why the carburizing method is called “carburizing method using fluidized particles”. The carburizing method using fluidized particles is
Utilizing the property that the granular particles behave in this way (that is, they become fluidized particles), the entire retort is heated uniformly, and the contact between the fluidized particles and the article speeds up the heating rate of the article. ing.

この二つが,流動粒子を用いた浸炭処理方法が工場でし
ばしば実施される理由である。
These two are the reasons why carburizing methods using fluidized particles are often implemented in factories.

なおここで,顆粒状の粒子(流動粒子)は,前記式
(1),(2),(3),(4)の化学反応自体には何
等関与していないということには注意すべきである。
It should be noted here that the granular particles (fluid particles) do not participate in the chemical reactions themselves of the above formulas (1), (2), (3) and (4). is there.

〔従来技術の問題点〕[Problems of conventional technology]

上記のような流動粒子を用いた従来の浸炭処理方法にお
いては,浸炭速度が遅いため,浸炭処理に時間がかかる
という問題があった。この訳は,従来の方法では,前記
式(1)によってできる一酸化炭素の量が少ないため,
どんどん消費される活性炭素に対してその供給が追いつ
かないからである。
The conventional carburizing method using fluidized particles as described above has a problem that the carburizing process takes a long time because the carburizing speed is slow. This is because in the conventional method, the amount of carbon monoxide produced by the above formula (1) is small,
This is because the supply cannot keep up with the activated carbon that is consumed more and more.

〔技術的課題〕[Technical issues]

本発明は,このような従来技術の問題点を解決するため
になされたものである。
The present invention has been made to solve the problems of the conventional art.

本発明の技術課題は,従来よりも短い時間で浸炭処理が
完了するようにすることにある。
The technical problem of the present invention is to complete the carburizing process in a shorter time than before.

(ロ)発明の構成 〔達成のための手段〕 上記技術的課題は,本発明によれば,次のような手段に
よって達成される。
(B) Structure of the Invention [Means for Achievement] According to the present invention, the above technical problems can be achieved by the following means.

即ち,本発明に係る流動粒子を用いた浸炭処理方法とい
うのは,炭化水素が部分酸化して吸熱型ガスができる反
応を促進させる性質を持った顆粒状の触媒粒子が多数集
められて,そのなかには浸炭処理すべき品物が埋没され
ており,次の(a),(b),(c)の三つによって前
記品物の表面には浸炭層が形成されることを特徴とす
る。
That is, the carburizing treatment method using fluidized particles according to the present invention is a collection of a large number of granular catalyst particles having a property of promoting the reaction of partial oxidation of hydrocarbons to form an endothermic gas. The article to be carburized is buried therein, and a carburized layer is formed on the surface of the article by the following three (a), (b) and (c).

(a)炭化水素と空気との混合ガスが前記品物と前記触
媒粒子の集まりとのなかに供給され,加熱される。
(A) A mixed gas of hydrocarbon and air is supplied into the product and the aggregate of the catalyst particles and heated.

(b)前記触媒粒子は前記炭化水素の部分酸化反応を促
進し,且つ,前記触媒粒子自身は斯かる部分酸化反応に
よって出来た吸熱型ガスの流れにより流動化される。
(B) The catalyst particles accelerate the partial oxidation reaction of the hydrocarbon, and the catalyst particles themselves are fluidized by the flow of the endothermic gas produced by the partial oxidation reaction.

(c)前記品物は前記吸熱型ガス中で高温に保持され
る。
(C) The item is kept at a high temperature in the endothermic gas.

また,本発明に係る流動粒子を用いた浸炭処理方法を実
施するのに直接使用する装置というのは,加熱装置を有
する炉と,該炉のなかに置かれたレトルトと,該レトル
トのなかに充填された顆粒状の触媒粒子と,該触媒粒子
の集まりのなかに埋没さている品物と,炭化水素と空気
との混合ガスを供給する炭化水素・空気供給装置とから
構成されており,前記触媒粒子は炭化水素が部分酸化反
応して吸熱型ガスができる反応を促進させる性質を持っ
たものであり,前記レトルトのなかは前記加熱装置によ
って加熱可能とされており,且つ,前記レトルトのなか
には前記炭化水素・空気供給装置によって炭化水素と空
気との混合ガスが供給可能とされていることを特徴とす
る。
Further, the apparatus used directly for carrying out the carburizing treatment method using fluidized particles according to the present invention includes a furnace having a heating device, a retort placed in the furnace, and a retort inside the retort. The catalyst is composed of filled granular catalyst particles, an article buried in a collection of the catalyst particles, and a hydrocarbon / air supply device for supplying a mixed gas of hydrocarbon and air. The particles have a property of accelerating the partial oxidation reaction of hydrocarbons to form an endothermic gas. The retort can be heated by the heating device, and the retort has the above-mentioned properties. It is characterized in that a mixed gas of hydrocarbon and air can be supplied by a hydrocarbon / air supply device.

〔作用〕[Action]

本発明においては,上記のように触媒粒子が用いられて
いるために,浸炭処理時,活性炭素の供給源である一酸
化炭素が非常に多量に発生する。従って,活性炭素がど
んどん消費されても,一酸化炭素は,それに応じた量だ
けの活性炭素をすぐに供給することができる。従って,
浸炭処理は早く進む。
In the present invention, since the catalyst particles are used as described above, an extremely large amount of carbon monoxide, which is a supply source of activated carbon, is generated during the carburizing treatment. Therefore, even if the activated carbon is consumed more and more, the carbon monoxide can immediately supply the activated carbon in a corresponding amount. Therefore,
Carburizing process proceeds quickly.

〔実施例〕〔Example〕

次に,本発明の実施例を図面に基づいて詳細に説明す
る。
Next, embodiments of the present invention will be described in detail with reference to the drawings.

図は,本発明の一実施例に係る浸炭処理装置の縦断面図
である。図において,3は,加熱装置(例えば,電熱ヒ
ータ)2を有する炉であり,4は,炉1のなかに置かれ
たレトルトである。レトルト4のなかは,多数の小孔1
3が穿設されている分散板14によって上室15と下室
16とに区画されている。上室15には,炭化水素の部
分酸化反応を促進させる性質を持った顆粒状の触媒粒子
5が充填されている。この粒子は,その一粒の大きさが
80メッシュから100メッシュ(直径が147μから
175μ)までの範囲にある。この触媒粒子は,スピネ
ル粒子を担体としてその表面及び内部にコバルト,ニッ
ケル等の触媒金属を担持させたものである。斯かる触媒
粒子は,言うまでもなく,高温還元雰囲気中で化学的に
安定なものである。触媒粒子は,上室15のなかに完全
にいっぱい充填されてはおらず,上室15の上部11に
は少し空間が設けられている。レトルト4の上方は,円
錐形とされており,その先端には開口21が設けられて
いる。
FIG. 1 is a vertical sectional view of a carburizing treatment apparatus according to an embodiment of the present invention. In the figure, 3 is a furnace having a heating device (for example, an electric heater) 2, and 4 is a retort placed in the furnace 1. The retort 4 has many small holes 1
The dispersion plate 14 having the holes 3 is divided into an upper chamber 15 and a lower chamber 16. The upper chamber 15 is filled with granular catalyst particles 5 having the property of promoting the partial oxidation reaction of hydrocarbons. The size of each particle is in the range of 80 mesh to 100 mesh (diameter: 147μ to 175μ). The catalyst particles have spinel particles as a carrier and carry catalytic metals such as cobalt and nickel on the surface and inside thereof. Needless to say, such catalyst particles are chemically stable in a high temperature reducing atmosphere. The catalyst particles are not completely filled in the upper chamber 15, and a little space is provided in the upper portion 11 of the upper chamber 15. The upper part of the retort 4 has a conical shape, and an opening 21 is provided at the tip thereof.

図に示されている触媒粒子5のなかには浸炭処理すべき
品物6が埋没されている。この品物6は,鋼でできたも
のである。12は,品物6を支えるための吊り下げ棒で
ある。
An article 6 to be carburized is buried in the catalyst particles 5 shown in the figure. This item 6 is made of steel. Reference numeral 12 is a hanging rod for supporting the item 6.

17は,炭化水素(この実施例では,ブタン)をレトル
ト4に供給するための炭化水素供給装置である。18
は,空気をレトルト4に供給するための空気供給装置で
ある。19は,炭化水素の流量を測定してその流量を調
整するための炭化水素流量調整装置である。20は,空
気の流量を測定してその流量を調整するための空気流量
調整装置である。炭化水素と空気とは,まずそれらの絶
対流量と割合とが調整されてレトルト4の下室16に供
給される。そして,下室16で混合された後,上室15
に流入する。炭化水素供給装置17,空気供給装置1
8,炭化水素流量調整装置19及び空気流量調整装置2
0は,本発明でいう炭化水素・空気供給装置7を構成し
ている。
Reference numeral 17 is a hydrocarbon supply device for supplying hydrocarbons (butane in this embodiment) to the retort 4. 18
Is an air supply device for supplying air to the retort 4. Reference numeral 19 is a hydrocarbon flow rate adjusting device for measuring the flow rate of hydrocarbons and adjusting the flow rate. Reference numeral 20 is an air flow rate adjusting device for measuring the flow rate of air and adjusting the flow rate. Hydrocarbons and air are supplied to the lower chamber 16 of the retort 4 after their absolute flow rates and proportions are adjusted. Then, after being mixed in the lower chamber 16, the upper chamber 15
Flow into. Hydrocarbon supply device 17, air supply device 1
8, hydrocarbon flow rate adjusting device 19 and air flow rate adjusting device 2
0 constitutes the hydrocarbon / air supply device 7 according to the present invention.

図に示されている浸炭処理装置1においては,浸炭処理
時,レトルト4のなかは加熱装置2によって約930℃
に加熱されている。また,炭化水素・空気供給装置7か
らは,所定流量及び所定割合の炭化水素(この実施例で
は,ブタン)と空気とがレトルト4へ供給される。な
お,図において矢印はこれらの混合ガスの流れを示して
いる。斯かる混合ガスが上室15に入ると,混合ガスは
前記式(1),(2)で示されたように変性して吸熱型
ガスとなる。斯かる吸熱型ガスの流れによって,レトル
ト4のなかの触媒粒子5は流動状態となり,図に示され
るようにその表面22が波立つ。そして,斯かる流動状
態となった触媒粒子(即ち,流動粒子)5によって,前
記したように, レトルト4のなかが均一に加熱され, また,触媒粒子5が品物6に接触することによって,
品物6の昇温速度が早められる。
In the carburizing treatment apparatus 1 shown in the figure, during the carburizing treatment, the retort 4 is heated to about 930 ° C.
Is heated to. Further, the hydrocarbon / air supply device 7 supplies hydrocarbons (butane in this embodiment) and air at a predetermined flow rate and a predetermined ratio to the retort 4. The arrows in the figure indicate the flow of these mixed gases. When such a mixed gas enters the upper chamber 15, the mixed gas is modified as shown in the equations (1) and (2) to become an endothermic gas. Due to the flow of the endothermic gas, the catalyst particles 5 in the retort 4 are in a fluidized state, and the surface 22 thereof is wavy as shown in the figure. Then, as described above, the catalyst particles (that is, fluidized particles) 5 in the fluidized state uniformly heat the inside of the retort 4, and the catalyst particles 5 come into contact with the article 6,
The temperature rising rate of the item 6 is accelerated.

また,本実施例においては,上記のような触媒粒子5が
あるため,前記式(1)の反応が促進され,活性炭素の
供給源である一酸化炭素が非常に多量に発生する(実験
によれば,一酸化炭素の濃度は従来体積で約5%程度で
あるのに対して,本実施例のものはその約4倍の19%
程度にもなる)。従って,活性炭素がどんどん消費され
ても,それに応じて一酸化炭素はどんどん活性炭素を供
給することができる。従って,浸炭処理は早く進む。
In addition, in this example, since the catalyst particles 5 as described above are used, the reaction of the above formula (1) is promoted, and a very large amount of carbon monoxide, which is a source of activated carbon, is generated (in the experiment According to the above, the concentration of carbon monoxide is about 5% in the conventional volume, whereas that of the present embodiment is about 4 times that of 19%.
It also becomes a degree). Therefore, as the activated carbon is consumed more and more, the carbon monoxide can supply the activated carbon accordingly. Therefore, the carburizing process proceeds quickly.

なお,レトルト4を通過した吸熱型ガス等は,レトルト
4の上部の開口21で燃やされる。23は,斯かる吸熱
型ガス等を燃やすに際し種火をつけるためのトーチ,2
4は斯かる吸熱型ガス等が燃えために生じた炎である。
The endothermic gas that has passed through the retort 4 is burned in the opening 21 in the upper portion of the retort 4. Reference numeral 23 is a torch for setting a pilot flame when burning such endothermic gas, 2
Reference numeral 4 is a flame generated because the endothermic gas or the like burns.

(ハ)発明の効果 上記実施例の説明から分る通り,本発明によれば,従来
よりも短い時間で浸炭処理を完了させることが可能とな
るという効果を奏する。
(C) Effect of the Invention As can be seen from the description of the above embodiment, according to the present invention, there is an effect that the carburizing process can be completed in a shorter time than before.

【図面の簡単な説明】[Brief description of drawings]

図は,本発明の一実施例に係る流動粒子を用いた浸炭処
理方法を実施するのに直接使用する装置の縦断面図であ
る。 1……浸炭処理装置(流動粒子を用いた浸炭処理方法を
実施するのに直接使用する装置) 2……加熱装置 3……炉 4……レトルト 5……触媒粒子 6……品物 7……炭化水素・空気供給装置
FIG. 1 is a vertical sectional view of an apparatus directly used for carrying out a carburizing method using fluidized particles according to an embodiment of the present invention. 1 ... Carburizing device (device used directly for carrying out carburizing method using fluidized particles) 2 ... Heating device 3 ... Furnace 4 ... Retort 5 ... Catalyst particles 6 ... Goods 7 ... Hydrocarbon / air supply device

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】炭化水素が部分酸化して吸熱型ガスができ
る反応を促進させる性質を持った顆粒状の触媒粒子が多
数集められて,そのなかには浸炭処理すべき品物が埋没
されており,次の(a),(b),(c)の三つによっ
て前記品物の表面には浸炭層が形成されることを特徴と
する流動粒子を用いた浸炭処理方法。 (a)炭化水素と空気との混合ガスが前記品物と前記触
媒粒子の集まりとのなかに供給され,加熱される。 (b)前記触媒粒子は前記炭化水素の部分酸化反応を促
進し,且つ,前記触媒粒子自身は斯かる部分酸化反応に
よって出来た吸熱型ガスの流れにより流動化される。 (c)前記品物は前記吸熱型ガス中で高温に保持され
る。
1. A large number of granular catalyst particles having a property of accelerating the reaction of partial oxidation of hydrocarbons to form an endothermic gas, in which a product to be carburized is buried. 3. A carburizing method using fluidized particles, wherein a carburized layer is formed on the surface of the article by (a), (b) and (c). (A) A mixed gas of hydrocarbon and air is supplied into the product and the aggregate of the catalyst particles and heated. (B) The catalyst particles accelerate the partial oxidation reaction of the hydrocarbon, and the catalyst particles themselves are fluidized by the flow of the endothermic gas produced by the partial oxidation reaction. (C) The item is kept at a high temperature in the endothermic gas.
【請求項2】加熱装置を有する炉と,該炉のなかに置か
れたレトルトと,該レトルトのなかに充填された顆粒状
の触媒粒子と,該触媒粒子の集まりのなかに埋没さてい
る品物と,炭化水素と空気との混合ガスを供給する炭化
水素・空気供給装置とから構成されており,前記触媒粒
子は炭化水素が部分酸化反応して吸熱型ガスができる反
応を促進させる性質を持ったものであり,前記レトルト
のなかは前記加熱装置によって加熱可能とされており,
且つ,前記レトルトのなかには前記炭化水素・空気供給
装置によって炭化水素と空気との混合ガスが供給可能と
されていることを特徴とする流動粒子を用いた浸炭処理
方法を実施するのに直接使用する装置。
2. A furnace having a heating device, a retort placed in the furnace, granular catalyst particles filled in the retort, and an article buried in the aggregate of the catalyst particles. And a hydrocarbon / air supply device for supplying a mixed gas of hydrocarbon and air. The catalyst particles have a property of promoting a reaction in which hydrocarbon partially oxidizes to form an endothermic gas. The retort is capable of being heated by the heating device,
Further, the retort is directly used for carrying out a carburizing treatment method using fluidized particles, characterized in that a mixed gas of hydrocarbon and air can be supplied by the hydrocarbon / air supply device. apparatus.
JP10911184A 1984-05-29 1984-05-29 Carburizing process using fluidized particles and apparatus used directly to carry out it Expired - Fee Related JPH066782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10911184A JPH066782B2 (en) 1984-05-29 1984-05-29 Carburizing process using fluidized particles and apparatus used directly to carry out it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10911184A JPH066782B2 (en) 1984-05-29 1984-05-29 Carburizing process using fluidized particles and apparatus used directly to carry out it

Publications (2)

Publication Number Publication Date
JPS60251266A JPS60251266A (en) 1985-12-11
JPH066782B2 true JPH066782B2 (en) 1994-01-26

Family

ID=14501838

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH066782B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5686326A (en) * 1985-08-05 1997-11-11 Canon Kabushiki Kaisha Method of making thin film transistor
JPS62199761A (en) * 1986-02-25 1987-09-03 Ishikawajima Harima Heavy Ind Co Ltd Heat treatment of steel
JP6436000B2 (en) * 2015-06-18 2018-12-12 トヨタ自動車株式会社 Carburizing equipment

Also Published As

Publication number Publication date
JPS60251266A (en) 1985-12-11

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