JPS633651B2 - - Google Patents
Info
- Publication number
- JPS633651B2 JPS633651B2 JP9684281A JP9684281A JPS633651B2 JP S633651 B2 JPS633651 B2 JP S633651B2 JP 9684281 A JP9684281 A JP 9684281A JP 9684281 A JP9684281 A JP 9684281A JP S633651 B2 JPS633651 B2 JP S633651B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- gas
- exhaust gas
- combustion chamber
- inert gas
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 31
- 239000011261 inert gas Substances 0.000 claims description 21
- 239000000446 fuel Substances 0.000 claims description 19
- 239000000567 combustion gas Substances 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/14—Production of inert gas mixtures; Use of inert gases in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
【発明の詳細な説明】
この発明は排ガスを利用してイナートガスを製
造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing inert gas using exhaust gas.
タンカーにおいては空船時に船倉の防爆のた
め、船倉内に酸素濃度５％以下（望ましくは0.5
％程度）のイナートガスを充填する必要がある。
従来このイナートガスを得るには、Ａ重油や灯油
などの燃焼を完全燃焼に近い空気比でわざわざ燃
焼させていたので、これらの燃料を大量に必要と
した。 In tankers, to prevent explosions in the hold when the ship is empty, the oxygen concentration in the hold is 5% or less (preferably 0.5%).
%) of inert gas.
Conventionally, in order to obtain this inert gas, A-heavy oil, kerosene, etc. had to be combusted at an air-to-air ratio close to complete combustion, which required a large amount of these fuels.
この発明は上記従来の欠点を解消するもので、
排ガスを利用して少量の燃料で経済的にイナート
ガスを得ることができるイナートガスの製造方法
を提供しようとするものである。 This invention solves the above-mentioned conventional drawbacks,
The present invention aims to provide a method for producing inert gas that can economically obtain inert gas using a small amount of fuel using exhaust gas.
しかしてこの発明はバーナの燃焼室を通気性固
体から成る囲壁で囲み、該囲壁の外側に熱交換器
をそなえた燃焼ガス流通路を設け、酸素を含む排
ガスを上記熱交換器を経て上記燃焼室内へ供給す
るとともに、上記燃焼室内へ燃料を供給して上記
酸素により燃焼させ、該燃焼により生じた燃焼ガ
スを上記囲壁および上記燃焼ガス流通路を経てイ
ナートガスとして取出すことを特徴とするイナー
トガスの製造方法である。 However, this invention surrounds the combustion chamber of the burner with a surrounding wall made of an air-permeable solid, and provides a combustion gas flow path equipped with a heat exchanger on the outside of the surrounding wall, so that exhaust gas containing oxygen is passed through the heat exchanger to the combustion chamber. Production of inert gas characterized by supplying fuel into a room, supplying fuel into the combustion chamber and combusting it with the oxygen, and taking out the combustion gas generated by the combustion as inert gas through the surrounding wall and the combustion gas flow path. It's a method.
この発明において通気性固体とは、金属やセラ
ミツク等の耐熱材料から成り、網状、ハニカム
状、せんい状、多孔質状などの通気性を有する形
状に成形された適宜厚さの固体をいう。この通気
性固体は小球あるいは小径線が多数集合したもの
と等価と考えられるので、この通気性固体に燃焼
ガスを流通させた場合には、対流熱伝達係数が著
しく大きいとともに、実質的な表面積がきわめて
大きいといえる。 In this invention, the term "breathable solid" refers to a solid made of a heat-resistant material such as metal or ceramic, and formed into a shape having air permeability such as a net, honeycomb, fiber, or porous shape and having an appropriate thickness. This air-permeable solid is considered to be equivalent to a large number of small spheres or small diameter wires, so when combustion gas is passed through this air-permeable solid, the convective heat transfer coefficient is extremely large and the substantial surface area is can be said to be extremely large.
以下図面によりこの発明の一実施例を説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
図中１はバーナで、２はバーナタイル、３は燃
焼室、４はバーナタイル２に取付けられ燃焼室３
を囲む通気性固体から成る囲壁で、円筒状の側壁
４ａはステンレス金網（線径0.2mm、50メツシユ）
を10層積層し、円板状の側壁４ｂは上記ステンレ
ス金網を20層積層して成る。５は囲壁４の外側に
配設したチユーブ式の熱交換器で、Ｌ字状に折曲
成形した複数個の通気管６の両端部を、筒状室７
およびバーナタイル２の背面に固定した環状室８
に接続して成る。９は筒状室７に連通する排ガス
供給口、１０は排ガス供給管で舶用デイーゼルエ
ンジン（図示しない）の排気管に接続されてい
る。１１は排ガス噴出用のスリツト１２を内周面
にそなえた中空環状の排ガス噴出リンングで、環
状室８に連通する複数個の管１３に接続され、こ
の管により支持された排ガス噴出リング１１の外
周面と燃焼室３の周壁の一部を形成するバーナタ
イル２の内壁面１４との間には、燃焼ガス自己再
循環用の再循環路１５が形成されている。１６は
バーナタイル２の端部に取付けた燃料ノズルで、
１７は燃料供給口、１８は燃料供給管である。ま
た１９は基部をバーナタイル２に固着した外筒
で、イナートガス出口２０をそなえ、この外筒と
囲壁４との間には熱交換室に相当する燃焼ガス流
通路２１が形成されている。 In the figure, 1 is a burner, 2 is a burner tile, 3 is a combustion chamber, and 4 is a combustion chamber 3 attached to the burner tile 2.
The cylindrical side wall 4a is made of stainless steel wire mesh (wire diameter 0.2 mm, 50 mesh).
The disc-shaped side wall 4b is made by laminating 20 layers of the above stainless steel wire mesh. Reference numeral 5 denotes a tube-type heat exchanger disposed outside the surrounding wall 4, in which both ends of a plurality of ventilation pipes 6 bent into an L-shape are connected to a cylindrical chamber 7.
and an annular chamber 8 fixed to the back of the burner tile 2
It is connected to. 9 is an exhaust gas supply port communicating with the cylindrical chamber 7, and 10 is an exhaust gas supply pipe connected to an exhaust pipe of a marine diesel engine (not shown). Reference numeral 11 denotes a hollow annular exhaust gas blowing ring having a slit 12 for blowing out exhaust gas on its inner peripheral surface.The outer periphery of the exhaust gas blowing ring 11 is connected to a plurality of pipes 13 communicating with the annular chamber 8 and supported by these pipes. A recirculation path 15 for self-recirculation of combustion gas is formed between the inner wall surface 14 of the burner tile 2 forming a part of the peripheral wall of the combustion chamber 3. 16 is a fuel nozzle attached to the end of burner tile 2;
17 is a fuel supply port, and 18 is a fuel supply pipe. Reference numeral 19 denotes an outer cylinder whose base is fixed to the burner tile 2, and is provided with an inert gas outlet 20. Between this outer cylinder and the surrounding wall 4, a combustion gas flow passage 21 corresponding to a heat exchange chamber is formed.
上記構成の装置において燃料Ｆをノズル１６か
ら噴出させるとともに、排ガス供給口９から熱交
換器５内へ圧送したデイーゼルエンジンの排ガス
Ｇを排出噴出リングのスリツト１２から噴出させ
ると、燃料Ｆと少量の酸素を含む排ガスＧは燃焼
室３内において拡散混合するから、図示しない点
火装置により点火して燃焼をおこなう。この燃焼
により発生した燃焼ガスは、排ガスＧ中の酸素分
が燃焼により殆んど除去されO2含有量約0.5％前
後のイナートガスとなり、囲壁４を通過して燃焼
ガス流通路２１、イナートガス出口２０を経て図
示しないイナートガス使用側に流入する。この燃
焼ガス通過に際して表面積の大きい通気性固体か
ら成る囲壁４は対流熱伝達によりすみやかに加熱
され高温となるが、囲壁４は固体であつてガスよ
りはるかに大きいふく射射出能力を有するため、
この囲壁４からのふく射熱伝達により燃焼室３内
は高温に維持される。一方、囲壁４を通過して温
度低下した燃焼ガスは燃焼ガス流通路２１を流通
する際に熱交換器５の通気管６および筒状室７を
主として対流熱伝達により加熱し、これにより熱
交換器５内を流通するデイーゼルエンジンの排ガ
スＧは充分予熱されて排ガス噴出リング１１を経
て燃焼室３内へ供給される。この熱交換器５によ
る排ガスＧの予熱作用と前述の囲壁４による燃焼
室３内の高温維持作用とによつて、燃焼室３内は
700〜800℃程度の高温に維持され、通常排ガスＧ
中に５％程度しか含まれていない少量の酸素のみ
による燃料の燃焼を、吹消などをおこすことなく
安定した状態でおこなうことができるのである。
従つて通常のバーナにおいて必要とされる大量の
燃焼用空気はウオームアツプ時等を除いて必要と
しないため、排ガスＧ中の酸素を除去するのに必
要な少量の燃料のみをノズル１６から燃焼室３内
へ供給することによりイナートガスを得ることが
できるのである。 In the device configured as described above, when the fuel F is jetted from the nozzle 16 and the exhaust gas G of the diesel engine, which has been force-fed into the heat exchanger 5 from the exhaust gas supply port 9, is jetted from the slit 12 of the exhaust jet ring, the fuel F and a small amount of Since the exhaust gas G containing oxygen is diffused and mixed in the combustion chamber 3, it is ignited by an ignition device (not shown) to cause combustion. The combustion gas generated by this combustion becomes inert gas with an O 2 content of approximately 0.5% as most of the oxygen in the exhaust gas G is removed by combustion, and passes through the surrounding wall 4 to the combustion gas flow passage 21 and the inert gas outlet 20. The inert gas flows into the inert gas usage side (not shown). When the combustion gas passes through, the surrounding wall 4 made of an air-permeable solid with a large surface area is quickly heated to a high temperature by convection heat transfer, but since the surrounding wall 4 is a solid and has a much larger injection capacity than gas,
The inside of the combustion chamber 3 is maintained at a high temperature due to radiation heat transfer from the surrounding wall 4. On the other hand, the combustion gas whose temperature has decreased after passing through the surrounding wall 4 heats the vent pipe 6 and the cylindrical chamber 7 of the heat exchanger 5 mainly by convective heat transfer when flowing through the combustion gas flow path 21, thereby causing heat exchange. Exhaust gas G from the diesel engine flowing through the chamber 5 is sufficiently preheated and supplied into the combustion chamber 3 via the exhaust gas injection ring 11. The inside of the combustion chamber 3 is
It is maintained at a high temperature of about 700 to 800℃, and the exhaust gas G
This allows fuel to be burned in a stable manner using only a small amount of oxygen, which only contains about 5%, without blowing out.
Therefore, the large amount of combustion air required in a normal burner is not required except during warm-up, so only the small amount of fuel necessary to remove oxygen from the exhaust gas G is delivered from the nozzle 16 to the combustion chamber. Inert gas can be obtained by supplying the gas into the inert gas.
さらにこの実施例においては燃焼ガスの一部
は、燃焼Ｆおよび排ガスＧの燃焼室内への噴射運
動量により駆動されて、燃焼室３から再循環路１
５を経て矢印Ｒで示すように自己再循環するた
め、燃焼ガスの燃焼室内滞留時間の延長による燃
焼効率の向上および燃料の予熱による燃焼の容易
化が達成され、前述の囲壁４による燃焼室３内の
高温維持作用および燃焼用空気の予熱作用とあい
まつて、排ガスＧ中の少量の酸素による少量燃料
の燃焼が一層確実におこなわれるのである。 Further, in this embodiment, a part of the combustion gas is driven by the injection momentum of the combustion F and the exhaust gas G into the combustion chamber, so that a part of the combustion gas is transferred from the combustion chamber 3 to the recirculation path 1.
5 and self-recirculation as shown by the arrow R, the combustion efficiency is improved by extending the residence time of the combustion gas in the combustion chamber, and combustion is facilitated by preheating the fuel. Combined with the high temperature maintenance effect in the combustion chamber and the preheating effect of the combustion air, the small amount of oxygen in the exhaust gas G can more reliably burn a small amount of fuel.
上記構成のバーナ（燃焼室３：内径250mm×長
さ500mm）を用い、酸素12％を含むデイーゼルエ
ンジン排ガスにより燃料として灯油を6.5l／Ｈ燃
焼させたところ、酸素含有率0.5％のイナートガ
スを100m3／Ｈ製造することができた。同量のイ
ナートガスを従来法により燃料を燃焼用空気で燃
焼させて製造する場合には、燃料として灯油を
11.8l／Ｈ必要としたので、本実施例によると燃
料消費量は約1/2に減少することになる。 Using the burner with the above configuration (combustion chamber 3: inner diameter 250 mm x length 500 mm), 6.5 l/H of kerosene was burned as fuel using diesel engine exhaust gas containing 12% oxygen. 3 /H could be produced. When producing the same amount of inert gas by burning fuel with combustion air using the conventional method, kerosene is used as the fuel.
Since 11.8 l/H was required, the fuel consumption amount is reduced to about 1/2 according to this embodiment.
上記実施例においてはバーナの燃焼器としては
拡散燃焼形式のものを用いたが、予混合燃焼形式
の燃焼器を用いてもよく、またバーナとしては燃
焼ガス自己再循環用の再循環路１５をそなえてい
ない構造のものを用いてもよい。 In the above embodiment, a diffusion combustion type combustor was used as the burner combustor, but a premix combustion type combustor may also be used. It is also possible to use a structure that does not have such a structure.
なお以上はデイーゼルエンジンの排ガスを利用
してイナートガスを得る場合について説明した
が、本発明によればガソリンエンジンの排ガスあ
るいは各種の炉やボイラーの排ガスなど各種の排
ガスを利用してイナートガスを得ることができ
る。 Although the above description has been about the case where inert gas is obtained using the exhaust gas of a diesel engine, according to the present invention, it is also possible to obtain inert gas using various types of exhaust gas such as the exhaust gas of a gasoline engine or the exhaust gas of various types of furnaces and boilers. can.
以上説明したようにこの発明によれば、従来利
用されずに大気中へ放出されていた排ガスを利用
して少量の燃焼により経済的にイナートガスを得
ることができ、さらに排ガス中の未燃分の除去お
よび脱臭による排ガスの無公害化をはかることが
できる。 As explained above, according to the present invention, it is possible to economically obtain inert gas by burning a small amount of exhaust gas, which was conventionally unused and released into the atmosphere, and furthermore, the unburned gas in the exhaust gas can be It is possible to make exhaust gas pollution-free through removal and deodorization.
図面はこの発明の方法に使用するバーナの一例
を示す縦断面図である。
１……バーナ、３……燃焼室、４……囲壁、５
……熱交換器、９……排ガス供給口、１７……燃
料供給口、２０……イナートガス出口、２１……
燃焼ガス流通路。
The drawing is a longitudinal sectional view showing an example of a burner used in the method of the present invention. 1... Burner, 3... Combustion chamber, 4... Surrounding wall, 5
... Heat exchanger, 9 ... Exhaust gas supply port, 17 ... Fuel supply port, 20 ... Inert gas outlet, 21 ...
Combustion gas flow path.
Claims (1)
囲み、該囲壁の外側に熱交換器をそなえた燃焼ガ
ス流通路を設け、酸素を含む排ガスを上記熱交換
器を経て上記燃焼室内へ供給するとともに、上記
燃焼室内へ燃料を供給して上記酸素により燃焼さ
せ、該燃焼により生じた燃焼ガスを上記囲壁およ
び上記燃焼ガス流通路を経てイナートガスとして
取出すことを特徴とするイナートガスの製造方
法。1. The combustion chamber of the burner is surrounded by a surrounding wall made of an air-permeable solid, and a combustion gas flow path equipped with a heat exchanger is provided outside the surrounding wall, and exhaust gas containing oxygen is supplied into the combustion chamber through the heat exchanger. A method for producing inert gas, which also comprises supplying fuel into the combustion chamber and combusting it with the oxygen, and extracting the combustion gas produced by the combustion as inert gas through the surrounding wall and the combustion gas flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9684281A JPS58242A (en) | 1981-06-23 | 1981-06-23 | Inert gas manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9684281A JPS58242A (en) | 1981-06-23 | 1981-06-23 | Inert gas manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58242A JPS58242A (en) | 1983-01-05 |
| JPS633651B2 true JPS633651B2 (en) | 1988-01-25 |
Family
ID=14175763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9684281A Granted JPS58242A (en) | 1981-06-23 | 1981-06-23 | Inert gas manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58242A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110875A (en) * | 1984-11-01 | 1986-05-29 | 三菱油化エンジニアリング株式会社 | Radiant heater |
-
1981
- 1981-06-23 JP JP9684281A patent/JPS58242A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58242A (en) | 1983-01-05 |
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