JPH08325577A - Production of blown asphalt - Google Patents
Production of blown asphaltInfo
- Publication number
- JPH08325577A JPH08325577A JP15671695A JP15671695A JPH08325577A JP H08325577 A JPH08325577 A JP H08325577A JP 15671695 A JP15671695 A JP 15671695A JP 15671695 A JP15671695 A JP 15671695A JP H08325577 A JPH08325577 A JP H08325577A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- oil
- nitrogen oxide
- blowing
- blown asphalt
- 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
Links
Landscapes
- Working-Up Tar And Pitch (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ブローンアスファルト
の製造法に関し、更に詳しくはルーフィング材、建物の
防水工事の接着剤、塗料、鋼管の塗覆層、電気絶縁用、
ターポリン紙、道路舗装等に使用するブローンアスファ
ルトの製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing blown asphalt, more specifically, roofing materials, adhesives for building waterproofing work, paints, coating layers for steel pipes, electrical insulation,
It relates to a method for producing blown asphalt used for tarpaulin paper and road paving.
【０００２】[0002]
【従来の技術】ブローンアスファルトは石油の常圧、減
圧蒸留工程で得られるアスファルト分を含む常圧、減圧
蒸留残渣油を加熱し、空気を吹き込み、重合、縮合、部
分酸化などの反応により得られる硬質アスファルトであ
る。アスファルトには減圧蒸留残渣油そのもので製品と
なるストレートアスファルト、減圧蒸留残渣油のみでは
製品にならないため、空気を吹き込み軽度に重合、縮
合、部分酸化などの反応をしてストレートアスファルト
相当のセミブローンアスファルト、および強度に重合、
縮合、部分酸化などの反応をして得られる、いわゆるブ
ローンアスファルトがある。Blown asphalt is obtained by the reaction of atmospheric pressure of petroleum, atmospheric pressure containing asphalt content obtained in a vacuum distillation process, vacuum distillation residual oil, blowing air and conducting polymerization, condensation, partial oxidation, etc. It is a hard asphalt. For asphalt, straight asphalt, which is the product of vacuum distillation residual oil itself, cannot be a product of vacuum distillation residual oil alone, so air blowing blows light polymerization, condensation, partial oxidation and other reactions to produce semi-blown asphalt equivalent to straight asphalt. , And strong polymerization,
There is so-called blown asphalt, which is obtained by reactions such as condensation and partial oxidation.
【０００３】ブローンアスファルトの一般的な製造方式
には回分式と連続式（タワー式、管式）がある。回分式
は横型単独釜で各種製品を少量づつ製造する場合に好都
合であり、連続式は連続縦型コンバーターで大量に製造
する場合に好都合である。しかし回分式では製造時間に
長時間を要し、また連続式においても効率は十分とはい
えない。There are a batch type and a continuous type (tower type, pipe type) as a general production method of blown asphalt. The batch method is convenient when manufacturing various products little by little in a horizontal single pot, and the continuous method is convenient when manufacturing a large amount by a continuous vertical converter. However, the batch method requires a long manufacturing time, and the continuous method is not sufficiently efficient.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来の技術
の欠点を解消し、ブローンアスファルトを短時間に製造
し、省エネルギーを計り、効率的に製造する方法を提供
することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the drawbacks of the prior art and to provide a method for producing blown asphalt in a short time, saving energy, and producing efficiently.
【０００５】[0005]
【課題を解決するための手段】本発明者らは上記の課題
を解決するために鋭意研究した結果、石油蒸留残渣油か
らブローンアスファルトを製造するに際し、特定の物質
を添加することにより、従来の空気によるブローンアス
ファルトの製造よりも時間を短縮できることを見い出し
本発明を成すに至った。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that when a blown asphalt is produced from petroleum distillation residual oil, by adding a specific substance, The present invention has been completed by finding that the time can be shortened as compared with the production of blown asphalt by air.
【０００６】すなわち、本発明は石油蒸留残渣油原料を
昇温下に窒素酸化物ガスまたは窒素酸化物を含有するガ
スと接触（ブローイング）させることを特徴とするブロ
ーンアスファルトの製造法を提供する。[0006] That is, the present invention provides a process for producing blown asphalt, which comprises contacting (blowing) a nitrogen oxide gas or a gas containing a nitrogen oxide with a petroleum distillation residual oil feedstock at an elevated temperature.
【０００７】本発明で使用する原料は石油蒸留残渣油で
あり、例えば石油の常圧蒸留工程で得られるアスファル
ト分を含む常圧蒸留残渣油や該常圧蒸留残渣油の減圧蒸
留工程で得られるアスファルト分を含む減圧蒸留残渣油
が挙げられる。また減圧蒸留残渣油のプロパン脱れきア
スファルトが挙げられる。これらの原料は混合して用い
ることもできる。また、製品の要求性状によりこれらの
原料に蒸留留出油、プロパン脱れき油、フルフラールエ
キストラクト等を混合して用いることができる。The raw material used in the present invention is petroleum distillation residual oil, and is obtained, for example, in the atmospheric distillation residual oil containing asphalt obtained in the atmospheric distillation of petroleum or in the vacuum distillation of the atmospheric distillation residual oil. A vacuum distillation residue oil containing an asphalt component can be mentioned. Moreover, propane deasphalted asphalt of vacuum distillation residue oil can be mentioned. These raw materials can be mixed and used. Depending on the required properties of the product, these starting materials may be mixed with distilled distillate oil, propane deasphalted oil, furfural extract and the like.
【０００８】石油蒸留残渣油の粘度は好ましくは５００
〜１００００ＣＳｔ（＠１００℃）、さらに好ましくは
８００〜８０００ＣＳｔ（＠１００℃）の範囲であり、
比重は０．９００〜１．１００（＠２５℃）、さらに好
ましくは０．９５０〜１．０５０（＠２５℃）の範囲で
ある。The viscosity of petroleum distillation residue oils is preferably 500.
The range is from 1 to 10,000 CSt (@ 100 ° C.), more preferably from 800 to 8,000 CSt (@ 100 ° C.),
The specific gravity is in the range of 0.900 to 1.100 (@ 25 ° C), and more preferably 0.950 to 1.050 (@ 25 ° C).
【０００９】本発明で用いる窒素酸化物ガスとしては、
一般式ＮＯx で表される窒素酸化物が挙げられる。例え
ばＮＯ、Ｎ2 Ｏ、ＮＯ2 、Ｎ2 Ｏ3 、Ｎ2 Ｏ4 あるいは
Ｎ2Ｏ5 が挙げられる。これらは単独または混合して用
いることができる。窒素酸化物を含有するガスとしては
一般式ＮＯx で表される窒素酸化物を含むガスが挙げら
れ、例えば加熱燃焼排ガスやエンジン燃焼排ガスが挙げ
られる。また、酸素や空気により窒素酸化物に容易に転
化するＮＨ3 やＮ2 Ｈ4 等を注入してＮＯx 源とするこ
ともできる。The nitrogen oxide gas used in the present invention is
Nitrogen oxides represented by the general formula NOx may be mentioned. Examples thereof include NO, N 2 O, NO 2 , N 2 O 3 , N 2 O 4 and N 2 O 5 . These can be used alone or in combination. Examples of the gas containing nitrogen oxide include a gas containing nitrogen oxide represented by the general formula NOx, and examples thereof include heating combustion exhaust gas and engine combustion exhaust gas. Further, it is also possible to inject NH 3 , N 2 H 4 or the like that is easily converted into nitrogen oxides by oxygen or air to serve as a NOx source.
【００１０】窒素酸化物ガスはそのまま用いても良く、
あるいは該窒素酸化物ガスを、例えば窒素、アルゴン、
ヘリウム等の不活性ガスまたは水蒸気、一酸化炭素、二
酸化炭素、空気等の任意のガスで稀釈して用いることも
できる。窒素酸化物ガスの添加量は好ましくは５００ｐ
ｐｍ以上、さらに好ましくは１０００ｐｐｍ以上であ
る。The nitrogen oxide gas may be used as it is,
Alternatively, the nitrogen oxide gas is, for example, nitrogen, argon,
It can also be used after diluting it with an inert gas such as helium or any gas such as water vapor, carbon monoxide, carbon dioxide, and air. Addition amount of nitrogen oxide gas is preferably 500 p
pm or more, more preferably 1000 ppm or more.
【００１１】本発明のブローンアスファルトの製造方式
として、回分式、連続式（タワー式、管式）のいずれを
用いてもよい。特に連続式のうち管式が好ましく用いら
れる。管式では窒素酸化物ガス気流中に石油蒸留残渣油
原料を微粒子状にして放射する方法が好ましい。この場
合、ガスが連続相で原料が不連続相（Liquid in GasPha
se ）で行うことが好ましい。As a method for producing the blown asphalt of the present invention, either a batch method or a continuous method (tower type, pipe type) may be used. Of the continuous types, the tubular type is particularly preferably used. In the case of the tubular type, a method in which the petroleum distillation residual oil raw material is pulverized and radiated in a nitrogen oxide gas stream is preferable. In this case, the gas is a continuous phase and the raw material is a discontinuous phase (Liquid in GasPha
se)).
【００１２】回分式と連続式であるタワー式の場合、反
応温度は好ましくは１５０〜３５０℃、さらに好ましく
は２００〜３００℃であり、反応圧力は好ましくは常圧
〜５ｋｇ／ｃｍ2 Ｇ、さらに好ましくは０．５〜５ｋｇ
／ｃｍ2 の範囲である。ガス量は好ましくは５０〜３０
０Ｎｍ3 ／Ｔｏｎ Ｆｅｅｄ、さらに好ましくは１００
〜２００Ｎｍ3 ／Ｔｏｎ Ｆｅｅｄの範囲である。接触
（ブローイング）時間は好ましくは１〜１０ｈｒ、さら
に好ましくは３〜７ｈｒである。In the case of the tower type which is a batch type and a continuous type, the reaction temperature is preferably 150 to 350 ° C., more preferably 200 to 300 ° C., and the reaction pressure is preferably atmospheric pressure to 5 kg / cm 2 G, and further Preferably 0.5-5 kg
The range is / cm 2 . The gas amount is preferably 50-30
0 Nm 3 / Ton Feed, more preferably 100
It is a range of up to 200 Nm 3 / Ton Feed. The contact (blowing) time is preferably 1 to 10 hours, more preferably 3 to 7 hours.
【００１３】管式反応器の場合、反応温度は好ましくは
１５０〜３５０℃、さらに好ましくは２００〜３００℃
であり、反応圧力は好ましくは０．５〜１０ｋｇ／ｃｍ
2 Ｇ、さらに好ましくは１．０〜５ｋｇ／ｃｍ2 Ｇの範
囲である。管式反応器の油循環比（Recycle/Feed）は好
ましくは２〜２０、さらに好ましくは８〜１５、ガス量
は好ましくは５０〜３００Ｎｍ3 ／Ｔｏｎ Ｆｅｅｄ、
さらに好ましくは１００〜２００Ｎｍ3 ／Ｔｏｎ Ｆｅ
ｅｄの範囲である。接触（ブローイング）時間は好まし
くは１〜１０ｈｒ、さらに好ましくは２〜５ｈｒであ
る。In the case of a tubular reactor, the reaction temperature is preferably 150-350 ° C, more preferably 200-300 ° C.
And the reaction pressure is preferably 0.5 to 10 kg / cm.
2 G, more preferably 1.0 to 5 kg / cm 2 G. The oil circulation ratio (Recycle / Feed) of the tubular reactor is preferably 2 to 20, more preferably 8 to 15, and the gas amount is preferably 50 to 300 Nm 3 / Ton Feed,
More preferably 100 to 200 Nm 3 / Ton Fe
It is in the range of ed. The contact (blowing) time is preferably 1 to 10 hours, more preferably 2 to 5 hours.
【００１４】管式反応器についてさらに詳しく説明する
と、ガス気流を保つために反応器は図１に示すような管
式の反応器が好ましい。図１の１は管式反応器、２は気
液分離器、３は水スプレー搭、４は油循環ポンプであ
る。窒素酸化物ガス（ＮＯ）を含む気流中に微粒子状に
した原料（Feed）を供給し、管式反応器１で原料をブロ
ーイングした後、気液分離器２で気液に分離する。気液
分離器２には付着したカーボンの燃焼防止のためにスチ
ームが常時入れられている。分離されたブローイング油
５は製品として抜き出されるが、製品の一部は再循環
（Recycle)される。７はＬＬＣ（Liqued Level Control
ler)、８は制御弁、９および１０は流量制御弁である。Explaining in more detail the tubular reactor, the tubular reactor as shown in FIG. 1 is preferable for maintaining the gas flow. In FIG. 1, 1 is a tubular reactor, 2 is a gas-liquid separator, 3 is a water spray column, and 4 is an oil circulation pump. A particulate raw material (Feed) is supplied into an air flow containing nitrogen oxide gas (NO), the raw material is blown by the tubular reactor 1, and then separated into a gas and a liquid by a gas-liquid separator 2. Steam is always put in the gas-liquid separator 2 in order to prevent combustion of attached carbon. The separated blowing oil 5 is withdrawn as a product, but a part of the product is recycled. 7 is LLC (Liqued Level Control)
ler), 8 is a control valve, and 9 and 10 are flow control valves.
【００１５】原料を微粒子状にする装置はノズルまたは
オリフィスに改良を加えた特殊なノズルまたはオリフィ
スであり、さらに詳しくは小孔を相当数設けた多孔ノズ
ルやオリフィスであり、さらに重油燃焼装置として使用
されている噴霧式や蒸気噴霧式重油バーナなど液体を微
粒子化できるものであればよい。また原料を微粒子状に
保つために管式反応器１内にストレーナーあるいはミキ
サーなどを備える手法も取ることもできる。The apparatus for making the raw material into fine particles is a special nozzle or orifice obtained by improving the nozzle or orifice, and more specifically, it is a multi-hole nozzle or orifice provided with a considerable number of small holes and is used as a heavy oil combustion apparatus. Any spray type or steam spray type heavy oil burner that can atomize a liquid may be used. Further, in order to keep the raw material in the form of fine particles, a method of providing a strainer or a mixer in the tubular reactor 1 can also be adopted.
【００１６】気液分離器２で分離された廃ガス６はさら
に水スプレー搭３で処理され、気相は廃ガス処理装置へ
送られ、液相は廃水処理装置へ送られて、廃ガス６中の
硫化水素、亜硫酸ガスが除去される。本発明の方法は原
料が高沸点のパラフィン基油を含むような軽質原料油か
らセミブローンアスファルトを製造することにも適して
いる。The waste gas 6 separated by the gas-liquid separator 2 is further processed in the water spray tower 3, the gas phase is sent to the waste gas treatment device, the liquid phase is sent to the waste water treatment device, and the waste gas 6 is sent. Hydrogen sulfide and sulfurous acid gas inside are removed. The method of the present invention is also suitable for producing semi-blown asphalt from light feedstocks whose feedstocks include high boiling paraffinic base oils.
【００１７】[0017]
【実施例】以下に実施例を示すが、本発明はこれに限定
されるものではない。評価に用いた針入度と軟化点の測
定方法はいずれもＪＩＳ Ｋ２２０７−１９９０に従っ
た。EXAMPLES Examples will be shown below, but the present invention is not limited to these examples. The methods of measuring penetration and softening point used for evaluation were in accordance with JIS K2207-1990.
【００１８】（実施例１）中東系減圧蒸留残渣油（粘度
５４５３ＣＳｔ（＠１００℃）、比重１．０１９５（＠
２５℃））２９７５ｇとプロパン脱れき油（粘度３６．
８８ＣＳｔ（＠１００℃）、比重０．９３３４（＠２５
℃））５２５ｇを５リットル攪拌機付きステンレス容器
に張り込み、温度２６０℃にてＮＯを１％含む空気４９
０ＮＬ／ｈｒで８ｈｒブローイングを行って得た製品の
性状は針入度が１７、軟化点が９１．５℃であった。(Example 1) Middle east system vacuum distillation residual oil (viscosity 5453CSt (@ 100 ° C), specific gravity 1.0195 (@
25 ° C.)) 2975 g and propane deasphalted oil (viscosity 36.
88CSt (@ 100 ° C), specific gravity 0.9334 (@ 25
℃)) 525 g was put in a stainless steel container equipped with a 5 liter stirrer, and air containing 1% NO at a temperature of 260 ° C. 49
The product obtained by blowing for 8 hours at 0 NL / hr had a penetration of 17 and a softening point of 91.5 ° C.
【００１９】（比較例１）ＮＯを含まない空気を用いる
以外は実施例１と同一の条件でブローイングを行い針入
度１７、軟化点９２．５℃を得るのに要した時間は１０
ｈｒであった。ＮＯを添加した場合（実施例１）は、添
加しない場合（比較例１）よりも処理時間が短縮できる
ことがわかる。(Comparative Example 1) Blowing was carried out under the same conditions as in Example 1 except that NO-free air was used, and the time required to obtain a penetration of 17 and a softening point of 92.5 ° C was 10 times.
It was hr. It can be seen that the processing time can be shortened when NO is added (Example 1) than when NO is not added (Comparative Example 1).
【００２０】（実施例２）実施例１と同一の原料油１２
００ｇを２リットルガラスフラスコに張り込み温度２３
０℃にてテストガソリンエンジン（日産ＶＧ２０Ｅ）の
エンジン排気ガス（ＣＯ2 １３．２〜１３．７％、ＮＯ
x ２９００〜３７００ｐｐｍ、Ｏ2 ０．５〜０．８％、
Ｎ2 ｂａｌａｎｃｅ）を１２０ＮＬ／ｈｒで吹き込み攪
拌しながら１２ｈｒブローイングを行って得た製品の性
状は針入度が４７、軟化点が５７℃であった。(Example 2) The same feed oil 12 as in Example 1
Pour 00g into a 2 liter glass flask and set the temperature to 23.
0 engine exhaust gas (CO 2 13.2 to 13.7% of the test gasoline engines at ° C. (Nissan VG20E), NO
x 2900 to 3700 ppm, O 2 0.5 to 0.8%,
The product obtained by blowing N 2 balance) at 120 NL / hr and stirring for 12 hr while stirring had a penetration of 47 and a softening point of 57 ° C.
【００２１】（実施例３）実施例２と同一の原料油、張
り込み量で反応温度２６０℃、吹き込みエンジン排気ガ
ス（ＣＯ2 １４．０％、ＮＯx ４３００〜４４００ｐｐ
ｍ、Ｏ2 ０．５〜０．８％、Ｎ2 ｂａｌａｎｃｅ）を１
２０ＮＬ／ｈｒ、７．５ｈｒブローイングを行って得た
製品の性状は針入度が２７、軟化点が７５℃であった。(Embodiment 3) The same feed oil as in Embodiment 2 was used, the reaction temperature was 260 ° C. with the amount of injection, blown engine exhaust gas (CO 2 14.0%, NOx 4300 to 4400 pp).
m, O 2 0.5-0.8%, N 2 balance) 1
The product obtained by blowing for 20 NL / hr and 7.5 hr had a penetration of 27 and a softening point of 75 ° C.
【００２２】（実施例４）吹き込みエンジン排気ガス
（ＣＯ2 １３．５％、ＮＯx ３４００〜３６００ｐｐ
ｍ）以外は実施例３と同一条件で２３ｈｒブローイング
を行って得た製品の性状は針入度が７、軟化点が１２４
℃であった。(Embodiment 4) Blow-in engine exhaust gas (CO 2 13.5%, NOx 3400 to 3600 pp)
The properties of the product obtained by performing blowing for 23 hours under the same conditions as in Example 3 except for m) are as follows: Penetration: 7, Softening point: 124
° C.
【００２３】（実施例５）実施例２の混合ガスの代わり
にＮＯのみを１２０ＮＬ／ｈｒ、４ｈｒブローイングを
行って得た製品の性状は針入度が１０、軟化点が９５℃
であった。(Example 5) The properties of the product obtained by blowing NO for 120 NL / hr for 4 hours instead of the mixed gas of Example 2 have a penetration of 10 and a softening point of 95 ° C.
Met.
【００２４】（比較例２）図１に示す管式反応器１．０
４０ｍ3 （３Ｂ）に１５０Ｎｍ3 ／ｈｒの空気と１８０
℃にて原料油（粘度１７００ＣＳｔ（＠１００℃））を
多孔のノズルを用いて、０．８８ｋＬ／ｈｒで張り込
み、管平均圧力２．１ｋｇ／ｃｍ2 Ｇ、温度２５０℃、
油循環比１０の条件で０．８８ｋＬ／ｈｒのブロンアス
ファルトを連続的に製造した。製品の性状は針入度が２
８、軟化点が７５℃であった。Comparative Example 2 The tubular reactor 1.0 shown in FIG.
150mm 3 / hr of air and 180m in 40m 3 (3B)
The raw material oil (viscosity 1700 CSt (@ 100 ° C.)) was squeezed at 0.88 kL / hr using a porous nozzle at a temperature of 250 ° C., a tube average pressure of 2.1 kg / cm 2 G,
0.88 kL / hr of blown asphalt was continuously produced under the condition of an oil circulation ratio of 10. The product has a penetration of 2
8. The softening point was 75 ° C.
【００２５】（実施例６）比較例２の空気に１％ＮＯを
添加し、温度、圧力、油循環比は同一で、１．１０ｋＬ
／ｈｒで張り込み、１．１０ｋＬ／ｈｒのブロンアスフ
ァルトを連続的に製造した製品の性状は針入度が２５、
軟化点が７８℃であった。ＮＯを添加した場合（実施例
６）は、添加しない場合（比較例２）よりも処理量が多
くなる。すなわち、反応が促進されることがわかる。(Example 6) 1% NO was added to the air of Comparative Example 2, the temperature, pressure and oil circulation ratio were the same, and 1.10 kL.
The product has a penetration of 25, which is produced by continuously producing 1.10 kL / hr blown asphalt.
The softening point was 78 ° C. When NO is added (Example 6), the treatment amount is larger than when NO is not added (Comparative Example 2). That is, it can be seen that the reaction is promoted.
【００２６】[0026]
【発明の効果】本発明のブローンアスファルトの製造方
法によれば、窒素酸化物ガスまたは窒素酸化物を含有す
るガスを添加することにより反応を促進できるので製造
時間が短縮され、従って省エネとなる。また特に管式反
応器を用いれば、空気量、温度の他に圧力、原料の供給
速度、油循環比（Recycle/Feed）を任意に変動させるこ
とができ、反応条件を広範囲に設定することができ、針
入度指数の高い、低温で脆くなりにくい製品を製造する
ことができる。According to the method for producing blown asphalt of the present invention, the reaction can be promoted by adding a nitrogen oxide gas or a gas containing a nitrogen oxide, so that the production time can be shortened and therefore energy can be saved. Moreover, in particular, if a tubular reactor is used, it is possible to arbitrarily change the pressure, the feed rate of the raw material, and the oil circulation ratio (Recycle / Feed) in addition to the air amount and temperature, and to set the reaction conditions in a wide range. Therefore, it is possible to manufacture a product having a high penetration index and not easily brittle at low temperature.
【図面の簡単な説明】[Brief description of drawings]
【図１】 本発明のブローンアスファルトの製造方法の
例を示す製造フローである。FIG. 1 is a manufacturing flow showing an example of a method for manufacturing a blown asphalt of the present invention.
１ 管式反応器 ２ 気液分離器 ３ 水スプレー搭 ４ 油循環ポンプ ５ ブローイング油 ６ 廃ガス ７ ＬＬＣ ８ 制御弁 ９、１０ 流量制御弁 1 Tube Reactor 2 Gas-Liquid Separator 3 Water Spray Tower 4 Oil Circulation Pump 5 Blowing Oil 6 Waste Gas 7 LLC 8 Control Valve 9, 10 Flow Control Valve
Claims (1)
物ガスまたは窒素酸化物を含有するガスと接触させるこ
とを特徴とするブローンアスファルトの製造方法。1. A method for producing blown asphalt, which comprises contacting a petroleum distillation residue oil raw material with a nitrogen oxide gas or a gas containing a nitrogen oxide at an elevated temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671695A JPH08325577A (en) | 1995-06-01 | 1995-06-01 | Production of blown asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671695A JPH08325577A (en) | 1995-06-01 | 1995-06-01 | Production of blown asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08325577A true JPH08325577A (en) | 1996-12-10 |
Family
ID=15633783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15671695A Pending JPH08325577A (en) | 1995-06-01 | 1995-06-01 | Production of blown asphalt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08325577A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013516504A (en) * | 2009-12-31 | 2013-05-13 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Multipurpose reactor and process for producing modified bitumen |
| CN104560089A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Method for producing asphalt with high softening point |
| IT202100018347A1 (en) * | 2021-07-12 | 2023-01-12 | Mopi S R L | PROCESS AND APPARATUS FOR THE OXIDATION OF BITUMEN |
-
1995
- 1995-06-01 JP JP15671695A patent/JPH08325577A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013516504A (en) * | 2009-12-31 | 2013-05-13 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Multipurpose reactor and process for producing modified bitumen |
| US9200205B2 (en) | 2009-12-31 | 2015-12-01 | Shell Oil Company | Multi-purpose reactor and process for the preparation of modified bitumen |
| US10260003B2 (en) | 2009-12-31 | 2019-04-16 | Shell Oil Company | Multi-purpose reactor and process for the preparation of modified bitumen |
| CN104560089A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Method for producing asphalt with high softening point |
| CN104560089B (en) * | 2013-10-22 | 2017-02-01 | 中国石油化工股份有限公司 | Method for producing asphalt with high softening point |
| IT202100018347A1 (en) * | 2021-07-12 | 2023-01-12 | Mopi S R L | PROCESS AND APPARATUS FOR THE OXIDATION OF BITUMEN |
| WO2023285972A1 (en) * | 2021-07-12 | 2023-01-19 | Mopi S.R.L. | A bitumen oxidation process, and apparatus to perform said process |
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