JP3462099B2 - High pressure dangerous gas supply method and its supply device - Google Patents
High pressure dangerous gas supply method and its supply deviceInfo
- Publication number
- JP3462099B2 JP3462099B2 JP32397098A JP32397098A JP3462099B2 JP 3462099 B2 JP3462099 B2 JP 3462099B2 JP 32397098 A JP32397098 A JP 32397098A JP 32397098 A JP32397098 A JP 32397098A JP 3462099 B2 JP3462099 B2 JP 3462099B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- gas
- supplying
- inert gas
- hazardous
- 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
Links
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高圧危険性気体の
供給方法及びその送給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for supplying high-pressure hazardous gas.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】高圧
危険性気体の一種である高圧酸素を酸化剤として各種物
質を酸化処理する方法は広く知られている。例えば、有
機材料を酸化して二酸化炭素と水にすることは公知のプ
ロセスであり、廃棄物を処分するため、およびまたは加
熱用、動力発生用にしばしば用いられている。エネルギ
ーをスチームの形で回収する場合、生成されるスチーム
温度は通常３００℃以下、代表的なものは２５０℃以下
である。従って、回収熱は価値がそれほどない低いもの
であり、現代の蒸気発生プラントで電力を発生させるに
必要な温度よりもかなり低いものである。2. Description of the Related Art A method of oxidizing various substances using high-pressure oxygen, which is a kind of high-pressure hazardous gas, as an oxidant is widely known. For example, oxidizing organic materials to carbon dioxide and water is a known process and is often used to dispose of waste and / or for heating and power generation. When recovering energy in the form of steam, the generated steam temperature is usually 300 ° C. or lower, typically 250 ° C. or lower. Thus, the heat recovered is of low value and is well below the temperature needed to generate electricity in modern steam generation plants.
【０００３】そこで、高温の蒸気を得るために熱エネル
ギーを臨界超過水流体から回収することが提案されてい
る。例えば、水の臨界超過条件下で有機連鎖結合を破壊
して毒性有機材料を改質し、無害の低分子材料にして、
生じた無毒性材料を通常の手段によって処分し且つ有用
エネルギーを得るようにするために、特公平１−３８５
３２号公報には、「有機物質、水、及び酸素の反応混合
物を形成し、該混合物を３７７℃以上の温度及び２２０
気圧以上の圧力で単一の均一流体相にて反応させて該有
機物質を酸化し、もって該水及び酸化生成物の温度を上
昇させることを特徴とする酸化反応器中において有用エ
ネルギーを得且つ有機物質を酸化する方法」が記載され
ている。この公報に記載された有機物質の酸化処理法を
具体的に説明すると、図２に示すように、有機材料のフ
ィードはライン１２を通ってフィードスラリータンク１
３に供給され、調整水もライン１４を通ってタンク１３
に供給される。タンク１３から水と有機材料はライン１
５、フィードポンプ１６、ライン１７を経て抽出器１８
およびライン１９を通り、３７７℃以上の温度に加熱さ
れて酸化反応器２０の直前に至る。一方、ソース２１か
らの空気または酸素はライン２２を通り酸化剤コンプレ
ッサー２３で２２０気圧以上に加圧されてライン２４を
通り、ライン１９を通ってきた有機物質および調整水と
混合されて酸化反応器２０に入る反応混合物を形成す
る。酸化反応器２０において超臨界状態で有機物質を酸
化した後、酸化反応器２０からの流出物はライン２５を
経て灰分分離器２６に至り、そこで灰分と無機塩は底部
から排出され、流出物はライン２７を経て膨脹タービン
２８に至り、出口部２９で高圧のスチームの形で有用エ
ネルギーとして取り出される。It has therefore been proposed to recover thermal energy from supercritical water fluids in order to obtain hot steam. For example, under supercritical conditions of water, breaking organic chain bonds to modify toxic organic materials into harmless low molecular weight materials,
In order to dispose of the produced non-toxic material by usual means and obtain useful energy, Japanese Patent Publication No.
No. 32, "Forms a reaction mixture of organic material, water, and oxygen, and the mixture is heated to a temperature of 377 ° C. or higher and 220
Obtaining useful energy in an oxidation reactor characterized by reacting at a pressure above atmospheric pressure in a single homogeneous fluid phase to oxidize the organic matter and thereby raise the temperature of the water and oxidation products; A method of oxidizing organic substances "is described. The method for oxidizing an organic substance described in this publication will be described in detail. As shown in FIG. 2, the feed of the organic material passes through a line 12 to feed slurry tank 1
3 and the adjusted water also passes through the line 14 to the tank 13
Is supplied to. Line 1 for water and organic materials from tank 13
5, feed pump 16, line 17 and extractor 18
And it passes through the line 19 and is heated to a temperature of 377 ° C. or higher and reaches just before the oxidation reactor 20. On the other hand, the air or oxygen from the source 21 passes through the line 22 and is pressurized to 220 atmospheric pressure or more by the oxidant compressor 23, passes through the line 24, and is mixed with the organic substance and the adjusted water that have passed through the line 19 to be mixed with the oxidation reactor. A reaction mixture entering 20 is formed. After oxidizing the organic matter in the supercritical state in the oxidation reactor 20, the effluent from the oxidation reactor 20 reaches the ash separator 26 via the line 25, where the ash and inorganic salts are discharged from the bottom, and the effluent is It reaches the expansion turbine 28 via the line 27 and is taken out as useful energy in the form of high pressure steam at the outlet 29.
【０００４】以上のようにして有機物質を超臨界状態で
酸化するに際しては空気または酸素は２２０気圧以上の
高圧に加圧される。この場合、コンプレッサー２３で低
圧の酸素を２２０気圧以上の高圧に急激に昇圧すると、
ほぼ不可逆断熱的な変化をするので、断熱圧縮により酸
素の温度が異常に上昇してしまう。いま、昇圧前の酸素
の温度、圧力を、それぞれＴ1、Ｐ1とし、昇圧後の酸素
の温度、圧力を、それぞれＴ2、Ｐ2とすれば、
Ｔ2／Ｔ1＝（Ｐ2／Ｐ1）(k-1)/k
となる。上式にＴ1＝２０℃、Ｐ2＝２２０気圧、Ｐ1＝
１気圧、 ｋ（比熱比）＝１．４ を代入すれば、Ｔ2 ＝
１０８４℃となる。 このような極めて高い温度になれ
ば、酸素供給配管中のガスケット等のシール材料が発火
して溶損するのみならず、酸素供給配管自体が発火し
て、溶断に至ることがある。さらに、酸素供給配管内の
錆や異物等が容易に自然発火してしまう。When oxidizing an organic substance in a supercritical state as described above, air or oxygen is pressurized to a high pressure of 220 atm or higher. In this case, when the low pressure oxygen is rapidly raised to a high pressure of 220 atm or higher by the compressor 23,
Since it undergoes an almost irreversible adiabatic change, the temperature of oxygen rises abnormally due to adiabatic compression. Assuming that the temperature and pressure of oxygen before pressure increase are T 1 and P 1 , respectively, and the temperature and pressure of oxygen after pressure increase are T 2 and P 2 , respectively, T 2 / T 1 = (P 2 / P 1 ) (k-1) / k . In the above equation, T 1 = 20 ° C., P 2 = 220 atm, P 1 =
Substituting 1 atm and k (specific heat ratio) = 1.4, T 2 =
It becomes 1084 ° C. At such an extremely high temperature, not only the sealing material such as a gasket in the oxygen supply pipe is ignited and melted but also the oxygen supply pipe itself is ignited and may be melted. Furthermore, rust, foreign matter, etc. in the oxygen supply pipe easily ignite spontaneously.
【０００５】そこで、かかる不都合な事態を回避する手
段として、酸素の圧力を極めて緩慢に上げれば、異常な
温度上昇は防げるが、それでは作業能率が大きく低下し
てしまう。Therefore, as a means for avoiding such an inconvenient situation, if the oxygen pressure is raised extremely slowly, an abnormal temperature rise can be prevented, but this will greatly reduce the work efficiency.
【０００６】本発明は従来の技術の有するこのような問
題点に鑑みてなされたものであって、その目的は、危険
性気体を送給する配管または危険性気体を使用する装置
に高圧危険性気体を供給するに際して自然発火等の不都
合な事態の生じることのない高圧危険性気体の供給方法
及びその送給装置を提供することにある。The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a pipe for supplying a dangerous gas or a device using the dangerous gas with a high pressure risk. It is an object of the present invention to provide a high-pressure dangerous gas supply method and a supply device thereof, which does not cause an inconvenient situation such as spontaneous combustion when supplying gas.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に本発明は、危険性気体送給配管または高温高圧下で酸
化反応を起こす装置に高圧危険性気体を供給するに際し
て、予め、危険性気体送給配管または高温高圧下で酸化
反応を起こす装置に高圧の不活性ガスを満たしてその配
管または装置の圧上げを行う。配管または装置内に存在
するのは不活性ガスであるから、断熱圧縮による温度上
昇が生じても、発火することはない。次いで、その不活
性ガスの圧力よりやや大きい圧力（不活性ガスの圧力の
１．１倍以上の圧力、好ましくは２倍以上の圧力）の高
圧危険性気体を危険性気体送給配管または高温高圧下で
酸化反応を起こす装置へ供給すれば、断熱圧縮熱はほと
んど生じることはなく、危険性気体送給配管または高温
高圧下で酸化反応を起こす装置内のガスを不活性ガスか
ら高圧危険性気体に置換することができる。In order to achieve the above-mentioned object, the present invention provides a method for supplying a high-pressure dangerous gas to a dangerous-gas supply pipe or a device that causes an oxidation reaction under high temperature and high pressure. The gas supply pipe or a device that causes an oxidation reaction under high temperature and high pressure is filled with a high-pressure inert gas to increase the pressure of the pipe or the device. Since the inert gas exists in the pipe or the device, even if the temperature rises due to adiabatic compression, it does not ignite. Then, a high pressure dangerous gas having a pressure slightly higher than the pressure of the inert gas (a pressure 1.1 times or more the pressure of the inert gas, preferably a pressure 2 times or more) is supplied to the dangerous gas supply pipe or high temperature / high pressure. If it is supplied to a device that causes an oxidation reaction below, adiabatic compression heat is hardly generated, and the gas inside the device that causes an oxidation reaction under high temperature and high pressure is supplied from an inert gas to a high-pressure hazardous gas. Can be replaced with
【０００８】特に、危険性気体の一種である水素、アセ
チレン等の可燃性気体は、低圧から高圧に急激に昇圧す
ると、断熱圧縮により発火温度（例えば、水素の発火温
度は５８５℃）を超える温度に上昇する。そして、この
場合、酸素が存在すれば、爆発を起こす可能性がある。
そこで、本発明により、危険性気体送給配管または高温
高圧下で酸化反応を起こす装置内に前もって高圧不活性
ガスを供給する方法を採用すれば、高圧不活性ガスを高
圧可燃性気体に置換するに際して、温度上昇はほとんど
生じることなく、しかも前もって供給した不活性ガスに
より、その配管または装置内の酸素は除去されているの
で、高圧可燃性気体は爆発を起こすこともない。In particular, when a combustible gas such as hydrogen or acetylene, which is one of the dangerous gases, is rapidly increased from low pressure to high pressure, the temperature exceeds the ignition temperature (for example, the ignition temperature of hydrogen is 585 ° C.) due to adiabatic compression. Rise to. And in this case, if oxygen is present, it may cause an explosion.
Therefore, according to the present invention, by adopting a method of supplying a high-pressure inert gas in advance into a dangerous gas supply pipe or a device that causes an oxidation reaction under high temperature and high pressure, the high-pressure inert gas is replaced with a high-pressure combustible gas. At this time, there is almost no temperature rise, and since the oxygen in the pipe or the apparatus is removed by the inert gas supplied in advance, the high-pressure combustible gas does not explode.
【０００９】[0009]
【発明の実施の形態】即ち、本発明は、危険性気体送給
配管へ高圧危険性気体を供給する方法であって、上記配
管へ高圧危険性気体を供給する前に高圧の不活性ガスを
上記配管に供給し、次いで、その不活性ガスの圧力より
やや大きい圧力の高圧危険性気体を上記配管に供給して
不活性ガスを高圧危険性気体に置換することを特徴とす
る危険性気体送給配管への高圧危険性気体の供給方法を
第一の発明とし、高温高圧下で酸化反応を起こす装置に
高圧危険性気体を供給する方法であって、上記装置へ高
圧危険性気体を供給する前に高圧の不活性ガスを上記装
置に供給し、次いで、その不活性ガスの圧力よりやや大
きい圧力の高圧危険性気体を上記装置に供給して不活性
ガスを高圧危険性気体に置換することを特徴とする高温
高圧下で酸化反応を起こす装置への高圧危険性気体の供
給方法を第二の発明とし、上記第二の発明において、酸
化反応が超臨界水酸化反応または亜臨界水酸化反応であ
る高温高圧下で酸化反応を起こす装置への高圧危険性気
体の供給方法を第三の発明とし、上記第一、第二または
第三の発明において、高圧危険性気体の供給圧力が不活
性ガスの圧力の２〜４倍である高圧危険性気体の供給方
法を第四の発明とし、上記第一、第二、第三または第四
の発明において、高圧危険性気体が、高圧酸素、酸素を
含有する高圧気体、高圧可燃性気体である高圧危険性気
体の供給方法を第五の発明とし、危険性気体送給配管に
圧力計と、流量指示調節計を備えたコントロールバルブ
をこの順で配し、高圧危険性気体供給源から圧力計およ
びバルブを経て高圧危険性気体を供給する管路と高圧不
活性ガス供給源から圧力計およびバルブを経て高圧不活
性ガスを供給する管路とを上記危険性気体送給配管に接
続したことを特徴とする高圧危険性気体送給装置を第六
の発明とする。BEST MODE FOR CARRYING OUT THE INVENTION That is, the present invention is a method for supplying a high-pressure dangerous gas to a dangerous gas supply pipe, in which a high-pressure inert gas is supplied before the high-pressure dangerous gas is supplied to the pipe. A high-pressure dangerous gas having a pressure slightly higher than the pressure of the inert gas is supplied to the pipe to replace the inert gas with a high-pressure dangerous gas. A method for supplying a high-pressure dangerous gas to a supply pipe as the first invention, which is a method for supplying a high-pressure dangerous gas to a device that causes an oxidation reaction under high temperature and high pressure, and supplying the high-pressure dangerous gas to the device. Before supplying a high-pressure inert gas to the above device, and then supplying a high-pressure dangerous gas having a pressure slightly higher than the pressure of the inert gas to the above-mentioned device to replace the inert gas with a high-pressure dangerous gas. Reaction under high temperature and high pressure A second invention is a method of supplying a high-pressure hazardous gas to an apparatus for causing the apparatus, and in the second invention, an apparatus for causing the oxidation reaction under high temperature and high pressure, wherein the oxidation reaction is a supercritical water oxidation reaction or a subcritical water oxidation reaction. In the first, second or third invention, the method for supplying high-pressure dangerous gas to the third invention is such that the supply pressure of the high-pressure dangerous gas is 2 to 4 times the pressure of the inert gas. In the first, second, third or fourth invention, the method for supplying a dangerous gas is the fourth invention, wherein the high-pressure dangerous gas is high-pressure oxygen, high-pressure gas containing oxygen, or high-pressure combustible gas. A method for supplying a certain high-pressure hazardous gas is set as the fifth invention, and a pressure gauge and a control valve equipped with a flow rate indicating controller are arranged in this order in the dangerous gas supply pipe, and the pressure from the high-pressure hazardous gas supply source is set. Supply high pressure hazardous gas through meter and valve. And a pipeline for supplying a high-pressure inert gas from a high-pressure inert gas supply source through a pressure gauge and a valve to the above-mentioned dangerous-gas delivery pipe. Is the sixth invention.
【００１０】酸素を含有する気体としては、例えば、空
気を用いることができる。As the gas containing oxygen, for example, air can be used.
【００１１】可燃性気体とは、常温・常圧の空気中で、
着火すると持続して燃焼する性質を持つ気体をいい、例
えば、水素、アセチレン、メタン、ベンゼン、酸化エチ
レン、ピリジン、塩化ビニル等を挙げることができる。Combustible gas means air in normal temperature and pressure,
A gas having a property of continuously burning when ignited, and examples thereof include hydrogen, acetylene, methane, benzene, ethylene oxide, pyridine, and vinyl chloride.
【００１２】本明細書において「超臨界」とは、水の臨
界温度である３７４℃および臨界圧力である２１８気圧
を超えた領域を意味し。また、「亜臨界」とは、超臨界
に至る直前の状態であり、温度が１５０〜３７４℃で、
圧力が５０〜２１８気圧の領域を意味する。亜臨界水酸
化処理は、超臨界水酸化処理に比べて効率が劣るが、完
全分解を必要としない場合などに用いられる。As used herein, the term "supercritical" means a region above the critical temperature of water of 374 ° C. and the critical pressure of 218 atm. Further, "subcritical" is a state immediately before reaching supercritical state, at a temperature of 150 to 374 ° C,
It means a region where the pressure is 50 to 218 atm. The subcritical water oxidation treatment is inferior in efficiency to the supercritical water oxidation treatment, but is used when complete decomposition is not required.
【００１３】不活性ガスの昇圧が断熱圧縮的に行われ、
不活性ガスの温度が上昇しても自然発火することはない
が、急激に（断熱的に）昇圧するのではなく、緩慢に
（あるいは外部との熱交換が可能なように）昇圧すれ
ば、不活性ガスの温度上昇は少なくなるので、より好ま
しい。不活性ガスとしては、Ｈｅ、Ｎｅ、Ａｒ、Ｋｒ、
Ｘｅ等の希ガスまたは窒素を用いることができるが、経
済性の点で窒素を用いるのが好ましい。The pressure of the inert gas is increased adiabatically,
Even if the temperature of the inert gas rises, it does not ignite spontaneously, but rather than increasing pressure abruptly (adiabatically), increasing pressure slowly (or to allow heat exchange with the outside), It is more preferable because the temperature rise of the inert gas is reduced. As the inert gas, He, Ne, Ar, Kr,
A rare gas such as Xe or nitrogen can be used, but it is preferable to use nitrogen from the viewpoint of economy.
【００１４】高圧酸素の供給圧力を不活性ガスの圧力の
２〜４倍とするのが好ましいのは、以下の理由によるも
のである。
（１）高圧酸素の供給圧力が不活性ガスの圧力の４倍を
超える場合（例えば、高圧酸素の圧力が３００ｋｇ／ｃ
ｍ2で、窒素の圧力が７５ｋｇ／ｃｍ2未満の場合）高圧
酸素の供給時、配管内の酸素圧力が急激に上昇し、断熱
圧縮による発熱が大きく、自然発火の可能性がある。不
活性ガスの圧力がさらに低くなれば、さらに酸素圧力の
変化が大きくなるため、発熱が大きく自然発火が起こる
可能性が高くなる。The supply pressure of high-pressure oxygen is preferably set to 2 to 4 times the pressure of the inert gas for the following reason. (1) When the supply pressure of high-pressure oxygen exceeds four times the pressure of the inert gas (for example, the pressure of high-pressure oxygen is 300 kg / c
m 2, and the case where the pressure of nitrogen is less than 75 kg / cm 2) when the supply of high pressure oxygen, oxygen pressure in the pipe is rapidly increased, large heat generation due to adiabatic compression, the possibility of spontaneous combustion. If the pressure of the inert gas is further lowered, the change in oxygen pressure is further increased, so that heat generation is large and spontaneous combustion is likely to occur.
【００１５】（２）高圧酸素の供給圧力が不活性ガスの
圧力の２倍未満の場合（例えば、高圧酸素の圧力が３０
０ｋｇ／ｃｍ2で、窒素の圧力が１５０ｋｇ／ｃｍ2超の
場合）高圧酸素の供給時、配管内の酸素圧力の変化は小
さいので、自然発火するような断熱圧縮による発熱はな
い。よって、窒素圧力をこれ以上に高めても、窒素ガス
を多量に消費するだけであり、経済的でない。(2) When the supply pressure of high-pressure oxygen is less than twice the pressure of the inert gas (for example, the pressure of high-pressure oxygen is 30
When the pressure of nitrogen is more than 150 kg / cm 2 ( 0 kg / cm 2 and the pressure of nitrogen is more than 150 kg / cm 2 ), the change in the oxygen pressure in the pipe is small, so there is no heat generation due to adiabatic compression that spontaneously ignites. Therefore, even if the nitrogen pressure is further increased, a large amount of nitrogen gas is consumed, which is not economical.
【００１６】[0016]
【実施例】以下に本発明の方法を実施するに好適である
装置の概略構成を示す図１を参照しながら、本発明の方
法を具体的に説明する。図１において、１は酸素供給
源、２は窒素供給源である。３はバルブ、４はコントロ
ールバルブ、５はトラップ、６は圧力計、７は流量指示
調節計、８は反応器である。以上のように構成される装
置を用いて、一例として、工場から排出される有機性廃
水を処理する場合について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be specifically described below with reference to FIG. 1 showing a schematic configuration of an apparatus suitable for carrying out the method of the present invention. In FIG. 1, 1 is an oxygen supply source and 2 is a nitrogen supply source. 3 is a valve, 4 is a control valve, 5 is a trap, 6 is a pressure gauge, 7 is a flow rate indicator controller, and 8 is a reactor. As an example, a case of treating organic wastewater discharged from a factory using the apparatus configured as described above will be described.
【００１７】窒素供給源として圧力４００ｋｇ／ｃｍ2
の窒素ボンベを使用し、そのボンベ内の窒素を減圧弁
（図示せず）で所定の圧力（７５〜１５０ｋｇ／ｃ
ｍ2 ）まで減圧した後、配管９ａ（高圧不活性ガスを供
給する管路）および配管１０（危険性気体送給配管）の
バルブ３を開き、コントロールバルブ４を閉じて、配管
９ａから配管１０のコントロールバルブ４の流入側まで
上記減圧後の窒素を満たす。次に、酸素供給源１として
の液体酸素を約３００ｋｇ／ｃｍ2 まで昇圧し、蒸発、
ガス化した高圧酸素を、配管９ｂ（高圧危険性気体を供
給する管路）のバルブ３を開放して配管９ｂ内に供給す
る。そして、流量指示調節計７によりコントロールバル
ブ４から排出される流量を所定の値に設定し、高圧酸素
で押圧するようにして高圧窒素を配管１０から反応器８
を経て外部に放出し、一方、配管１１から反応器８内に
温度３７０〜４００℃の有機性廃水を供給する。この有
機性廃水は瞬時にして二酸化炭素と水に変化し、同時に
少量の灰分（無機物）が得られる。酸化反応熱により高
温になった超臨界水の保有する熱量は動力発生用または
スチーム発生用あるいは反応器８に供給される有機性廃
水の昇温用に利用することができる。Pressure of 400 kg / cm 2 as a nitrogen supply source
Nitrogen cylinder is used, and the pressure inside the cylinder is adjusted to a predetermined pressure (75 to 150 kg / c) with a pressure reducing valve (not shown).
After reducing the pressure to m 2 ), the valve 3 of the pipe 9a (pipe for supplying high-pressure inert gas) and the pipe 10 (dangerous gas feed pipe) is opened, the control valve 4 is closed, and the pipe 9a to the pipe 10 are closed. The reduced pressure nitrogen is filled up to the inflow side of the control valve 4. Next, the pressure of the liquid oxygen as the oxygen supply source 1 is increased to about 300 kg / cm 2 to evaporate,
The gasified high-pressure oxygen is supplied into the pipe 9b by opening the valve 3 of the pipe 9b (pipe for supplying high-pressure hazardous gas). Then, the flow rate discharged from the control valve 4 is set to a predetermined value by the flow rate indicator controller 7, and high pressure oxygen is pressed by the high pressure oxygen from the pipe 10 to the reactor 8.
While being discharged to the outside through the pipe 11, the organic waste water having a temperature of 370 to 400 ° C. is supplied from the pipe 11 into the reactor 8. This organic wastewater instantly changes to carbon dioxide and water, and at the same time, a small amount of ash (inorganic matter) is obtained. The amount of heat retained by the supercritical water, which has been heated to a high temperature by the heat of oxidation reaction, can be used for power generation, steam generation, or for raising the temperature of the organic wastewater supplied to the reactor 8.
【００１８】以上の実施例においては、工場から排出さ
れる有機性廃水を処理したが、これ以外に、ＰＣＢ、ダ
イオキシン等の難分解性有機塩素化合物を含有する廃
水、フロン、下水汚泥等を処理することもできる。In the above examples, the organic wastewater discharged from the factory was treated, but in addition to this, wastewater containing persistent organic chlorine compounds such as PCB and dioxin, freon, sewage sludge, etc. are treated. You can also do it.
【００１９】不活性ガスとしては入手しやすく安価であ
るとの理由により窒素を用いたが、これに限るものでは
なく、必要に応じて希ガスを用いることもできる。Nitrogen was used as the inert gas for the reason that it is easily available and inexpensive, but it is not limited to this, and a rare gas can be used if necessary.
【００２０】また、本発明の方法は超臨界状態または亜
臨界状態で有機物質を処理する場合に限らず、高圧酸素
または高圧の可燃性気体の封入される一般の圧力容器の
火災防止安全対策として用いることもできる。その他、
湿式酸化法等に本発明の方法を応用することができる。The method of the present invention is not limited to the case of treating an organic substance in a supercritical state or a subcritical state, but as a fire prevention safety measure for a general pressure vessel in which high pressure oxygen or a high pressure combustible gas is enclosed. It can also be used. Other,
The method of the present invention can be applied to a wet oxidation method or the like.
【００２１】[0021]
【発明の効果】本発明は上記のとおり構成されているの
で、危険性気体送給配管または高温高圧下で酸化反応を
起こす装置に高圧危険性気体を供給するに際して、自然
発火や爆発等の不都合な事態の生じることのない高圧危
険性気体の供給方法及びその送給装置を提供することが
できる。EFFECTS OF THE INVENTION Since the present invention is configured as described above, when supplying a high-pressure hazardous gas to a hazardous gas supply pipe or a device that causes an oxidation reaction under high temperature and high pressure, there is a problem such as spontaneous combustion and explosion. It is possible to provide a method for supplying high-pressure hazardous gas and a feeder for the same, which does not cause such a situation.
【図１】本発明の方法を適用するに好適である装置の概
略構成図である。FIG. 1 is a schematic configuration diagram of an apparatus suitable for applying the method of the present invention.
【図２】高圧酸素を用いて有機物質を燃焼する装置の一
例を示す系統図である。FIG. 2 is a system diagram showing an example of an apparatus for combusting an organic substance using high-pressure oxygen.
１…酸素供給源 ２…窒素送給源 ３…バルブ ４…コントロールバルブ ５…トラップ ６…圧力計 ７…流量指示調節計 ８…反応器 ９ａ、９ｂ、１０、１１…配管 1 ... Oxygen source 2 ... Nitrogen supply source 3 ... Valve 4 ... Control valve 5 ... Trap 6 ... Pressure gauge 7 ... Flow rate indicating controller 8 ... Reactor 9a, 9b, 10, 11 ... Piping
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−237297（ＪＰ，Ａ) 特開 昭58−186496（ＪＰ，Ａ) 特開 平10−230155（ＪＰ，Ａ) 特開 昭50−154177（ＪＰ，Ａ) 実開 平４−57242（ＪＰ，Ｕ) 特公 平１−38532（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 19/00 B01J 3/02 B09B 3/00 - 5/00 C08J 11/00 - 11/28 C02F 11/00 - 11/20 A62D 3/00 C02F 1/72 B01D 53/34 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-237297 (JP, A) JP-A-58-186496 (JP, A) JP-A-10-230155 (JP, A) JP-A-50- 154177 (JP, A) Actual Kaihei 4-57242 (JP, U) Japanese Patent Publication 1-38532 (JP, B2) (58) Fields investigated (Int.Cl. 7 , DB name) B01J 19/00 B01J 3 / 02 B09B 3/00-5/00 C08J 11/00-11/28 C02F 11/00-11/20 A62D 3/00 C02F 1/72 B01D 53/34
Claims (6)
供給する方法であって、上記配管へ高圧危険性気体を供
給する前に高圧の不活性ガスを上記配管に供給し、次い
で、その不活性ガスの圧力よりやや大きい圧力の高圧危
険性気体を上記配管に供給して不活性ガスを高圧危険性
気体に置換することを特徴とする危険性気体送給配管へ
の高圧危険性気体の供給方法。1. A method of supplying a high-pressure hazardous gas to a dangerous gas supply pipe, wherein a high-pressure inert gas is supplied to the pipe before supplying the high-pressure dangerous gas to the pipe, and then, High-pressure hazardous gas to the piping for supplying high-pressure hazardous gas of a pressure slightly higher than the pressure of the inert gas to replace the inert gas with high-pressure hazardous gas. Supply method.
圧危険性気体を供給する方法であって、上記装置へ高圧
危険性気体を供給する前に高圧の不活性ガスを上記装置
に供給し、次いで、その不活性ガスの圧力よりやや大き
い圧力の高圧危険性気体を上記装置に供給して不活性ガ
スを高圧危険性気体に置換することを特徴とする高温高
圧下で酸化反応を起こす装置への高圧危険性気体の供給
方法。2. A method of supplying a high-pressure hazardous gas to a device that causes an oxidation reaction under high temperature and high pressure, wherein a high-pressure inert gas is supplied to the device before supplying the high-pressure hazardous gas to the device. Then, a device for causing an oxidation reaction under high temperature and high pressure, characterized in that a high-pressure hazardous gas having a pressure slightly higher than the pressure of the inert gas is supplied to the device to replace the inert gas with the high-pressure hazardous gas. Method of supplying high-pressure hazardous gas to.
界水酸化反応である請求項２記載の高温高圧下で酸化反
応を起こす装置への高圧危険性気体の供給方法。3. The method for supplying a high-pressure hazardous gas to an apparatus for causing an oxidation reaction under high temperature and high pressure according to claim 2, wherein the oxidation reaction is a supercritical water oxidation reaction or a subcritical water oxidation reaction.
の圧力の２〜４倍である請求項１、２または３記載の高
圧危険性気体の供給方法。4. The method for supplying a high-pressure dangerous gas according to claim 1, 2 or 3, wherein the supply pressure of the high-pressure dangerous gas is 2 to 4 times the pressure of the inert gas.
有する高圧気体、高圧可燃性気体である請求項１、２、
３または４記載の高圧危険性気体の供給方法。5. The high-pressure hazardous gas is high-pressure oxygen, a high-pressure gas containing oxygen, or a high-pressure combustible gas.
3. The method for supplying a high-pressure hazardous gas according to 3 or 4.
示調節計を備えたコントロールバルブをこの順で配し、
高圧危険性気体供給源から圧力計およびバルブを経て高
圧危険性気体を供給する管路と高圧不活性ガス供給源か
ら圧力計およびバルブを経て高圧不活性ガスを供給する
管路とを上記危険性気体送給配管に接続したことを特徴
とする高圧危険性気体送給装置。6. A dangerous gas feed pipe is provided with a pressure gauge and a control valve equipped with a flow rate indicating controller in this order,
The above-mentioned danger is present in the pipeline for supplying the high-pressure hazardous gas from the high-pressure hazardous gas supply source through the pressure gauge and the valve and the pipeline for supplying the high-pressure inert gas from the high-pressure inert gas supply source through the pressure gauge and the valve. A high-pressure dangerous gas supply device characterized by being connected to a gas supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32397098A JP3462099B2 (en) | 1998-11-13 | 1998-11-13 | High pressure dangerous gas supply method and its supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32397098A JP3462099B2 (en) | 1998-11-13 | 1998-11-13 | High pressure dangerous gas supply method and its supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000146088A JP2000146088A (en) | 2000-05-26 |
| JP3462099B2 true JP3462099B2 (en) | 2003-11-05 |
Family
ID=18160676
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32397098A Expired - Fee Related JP3462099B2 (en) | 1998-11-13 | 1998-11-13 | High pressure dangerous gas supply method and its supply device |
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| Country | Link |
|---|---|
| JP (1) | JP3462099B2 (en) |
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1998
- 1998-11-13 JP JP32397098A patent/JP3462099B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000146088A (en) | 2000-05-26 |
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