JPH0628694B2 - Exhaust gas cleaning device - Google Patents
Exhaust gas cleaning deviceInfo
- Publication number
- JPH0628694B2 JPH0628694B2 JP60202580A JP20258085A JPH0628694B2 JP H0628694 B2 JPH0628694 B2 JP H0628694B2 JP 60202580 A JP60202580 A JP 60202580A JP 20258085 A JP20258085 A JP 20258085A JP H0628694 B2 JPH0628694 B2 JP H0628694B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- supply pipe
- gas
- support
- liquid
- 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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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、気液接触塔と、該気液接触塔内に配設されて
洗浄液を供給する供給配管と、該供給配管に設けられた
スプレーノズルと、供給配管を支持する配管サポートと
からなる排ガス洗浄装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention includes a gas-liquid contact tower, a supply pipe arranged in the gas-liquid contact tower to supply a cleaning liquid, and the supply pipe. The present invention relates to an exhaust gas cleaning device including a spray nozzle and a pipe support that supports a supply pipe.
例えば湿式脱硫装置の気液接触塔内には、流入する排ガ
ス中のSO2分を吸収除去する為に、洗浄液を供給する供
給配管が通常複数段設置されている。この配管及び支持
構造の従来技術を第６図乃至第８図により説明する。For example, in a gas-liquid contact tower of a wet desulfurization device, a plurality of supply pipes for supplying a cleaning liquid are usually installed in order to absorb and remove SO 2 in the inflowing exhaust gas. A conventional technique of this piping and support structure will be described with reference to FIGS. 6 to 8.
洗浄液の供給配管１１は同図に示す如く、主配管１、枝
管２及びスプレーノズル９より構成されている。各配管
１，２は内部流体がスラリー液である為、固形分の沈積
防止や高流速時の管材料の摩耗を考慮して、管内の流速
がどの位置においても適切な流速値となる様に管径を順
次変化させて形成されている。As shown in the figure, the cleaning liquid supply pipe 11 is composed of a main pipe 1, a branch pipe 2, and a spray nozzle 9. Since the internal fluid of each pipe 1 and 2 is a slurry liquid, the flow velocity inside the pipe should be an appropriate flow velocity value at any position in consideration of solid content deposition prevention and wear of the pipe material at high flow velocity. It is formed by sequentially changing the pipe diameter.
一方、供給配管１１の支持構造として型鋼等の配管サポ
ート８を設置し、これに枝管２を固定するのが一般的で
ある。５は気液接触塔を示す。動作を説明すれば、供給
配管１１内を流れてきた洗浄液は、スプレーノズル９か
ら噴霧され、気液接触塔５内において、SO2ガスを吸収
する。On the other hand, as a support structure for the supply pipe 11, a pipe support 8 such as a shaped steel is generally installed, and the branch pipe 2 is fixed thereto. 5 shows a gas-liquid contact tower. To explain the operation, the cleaning liquid flowing in the supply pipe 11 is sprayed from the spray nozzle 9 and absorbs SO 2 gas in the gas-liquid contact tower 5.
ところが、上記従来の構造では枝管２は単なる液流路で
あり、配管サポート８によつて支持される為に、次の欠
点を有する。However, in the above-described conventional structure, the branch pipe 2 is merely a liquid flow path and is supported by the pipe support 8, and therefore has the following drawbacks.
(1) 気液接触塔５内の全面に配管サポート８が縦、横
に必要であり（第８図）、気液接触塔５の断面の開口面
積がこの配管サポート８によつて減少する。(1) Pipe supports 8 are required vertically and horizontally on the entire surface of the gas-liquid contact tower 5 (Fig. 8), and the opening area of the cross section of the gas-liquid contact tower 5 is reduced by this pipe support 8.
(2) 大容量化によつて気液接触塔５の径が大きくなつ
た場合、供給液量が増えることから枝管２の口径が大き
くなり、これに伴い配管サポート８への荷重も増加す
る。又、配管サポート８の支持スパンも長くなり配管サ
ポート８自体も大型化する。この為、各段の構成高さ、
すなわち（配管口径）＋（梁せい）が増大し、スプレー
特性より決定される適正な段間隔が守れなくなる。(2) When the diameter of the gas-liquid contact tower 5 increases due to the increase in capacity, the diameter of the branch pipe 2 increases due to an increase in the amount of liquid supply, and the load on the pipe support 8 also increases accordingly. . In addition, the support span of the pipe support 8 becomes long and the pipe support 8 itself becomes large. Therefore, the configuration height of each stage,
That is, (pipe diameter) + (beam width) increases, and the proper step interval determined by the spray characteristics cannot be maintained.
(3) 梁せいの増大は第７図に示す如く、スプレーノズ
ル９より噴霧された洗浄液の分散を阻止する為、気液接
触塔５の有効断面を減少させると共に該塔５の性能を低
下させる原因となり好ましくない。(3) The increase of the beam diameter prevents the dispersion of the cleaning liquid sprayed from the spray nozzle 9 as shown in FIG. 7, so that the effective cross section of the gas-liquid contact tower 5 is reduced and the performance of the tower 5 is deteriorated. It becomes a cause and is not preferable.
他の従来例として各配管をウエブ材にて接続して、トラ
ス構造にて支持する構造も提案されている（実開昭５８
−１１６０２５号公報）が、この構造でも、各段を接続
する部材は必要であり、スプレー阻外を皆無には出来な
い。又、このトラス構成とする為には、上下間を接続す
る配管が同一縦断面上に配置されなければならず、各段
毎の主配管１の挿入角度を９０゜変化させてスプレーノ
ズル９の配置を完全千鳥型とする事が困難である。As another conventional example, a structure in which each pipe is connected by a web material and supported by a truss structure has also been proposed (Shokai 58).
However, even with this structure, a member for connecting each step is necessary, and spray blocking cannot be completely eliminated. In addition, in order to have this truss structure, the pipes connecting the upper and lower sides must be arranged on the same vertical section, and the insertion angle of the main pipe 1 for each stage is changed by 90 ° and the spray nozzle 9 is changed. It is difficult to make a perfect staggered arrangement.
本発明の目的は、配管サポートによる気液接触塔の開口
面積の減少やＳＯ２吸収性能の低下を防止すると共に、
供給配管の基端から先端までの全領域で流体を同じ流速
で通過させることが可能で、しかも供給配管の強度を十
分なものにすることができる排ガス洗浄装置を提供する
ことにある。An object of the present invention is to prevent a decrease in the opening area of a gas-liquid contact tower and a decrease in SO 2 absorption performance due to a pipe support,
It is an object of the present invention to provide an exhaust gas cleaning device capable of allowing a fluid to pass at the same flow velocity in the entire region from the base end to the tip of the supply pipe and making the strength of the supply pipe sufficient.
上記目的を達成するため本発明は、気液接触塔と、該気
液接触塔内に配設されて洗浄液を供給する供給配管と、
該供給配管に設けられたスプレーノズルと、供給配管を
支持する配管サポートを備えた排ガス洗浄装置であつ
て、前記供給配管と配管サポートのいずれか一方の本体
に他方の本体が一体に併設されると共に、供給配管は管
内流速を適正値に保つべく洗浄液流量に合わせて管径は
先端に向かって順次小さくなる先細に形成され、配管サ
ポートはその占める割合が供給配管の先端の先端に向か
う程大きくなるように形成されたことを特徴とするもの
である。To achieve the above object, the present invention provides a gas-liquid contact tower, a supply pipe arranged in the gas-liquid contact tower to supply a cleaning liquid,
An exhaust gas cleaning device comprising a spray nozzle provided in the supply pipe and a pipe support for supporting the supply pipe, wherein one body of the supply pipe and the pipe support is integrally provided with the other body. At the same time, the supply pipe is tapered so that the pipe diameter gradually decreases toward the tip according to the flow rate of the cleaning liquid in order to keep the flow velocity in the pipe at an appropriate value, and the proportion of the pipe support increases as it goes toward the tip of the supply pipe. It is characterized in that it is formed as follows.
供給配管の内部を通過する洗浄液は基端側のスプレーノ
ズルから順次放出されるため、次第に液量が少なくな
る。本発明によれば、供給配管の管径を前記の如く先端
に向かって順次小さくなる先細に形成することにより液
量が減少することによる液流速の低下を防止し、配管先
端まで適正な流速で洗浄液が供給される。Since the cleaning liquid passing through the inside of the supply pipe is sequentially discharged from the spray nozzle on the base end side, the liquid amount gradually decreases. According to the present invention, the pipe diameter of the supply pipe is tapered so that it gradually decreases toward the tip as described above, so that the liquid flow rate is prevented from lowering due to the decrease in the liquid amount, and the flow velocity is adjusted to an appropriate value up to the pipe tip. The cleaning liquid is supplied.
そして、上記のように供給配管を先細に形成すると供給
配管それ自体の強度が低下するが、本発明では該配管と
一体に併設された配管サポートをその占める割合が供給
配管の先細の先端に至るほど大きくなるように形成し
た。すなわち供給配管の基端側より先端側に至るほど供
給配管の先細化に略反比例する形で配管サポートが大き
くなるように形成した。これにより供給配管の先端の強
度低下が防止できる。When the supply pipe is formed in a tapered manner as described above, the strength of the supply pipe itself is reduced, but in the present invention, the proportion of the pipe support integrally provided with the pipe reaches the tapered tip of the supply pipe. It was formed so as to become larger. That is, the pipe support is formed so as to be substantially inversely proportional to the tapering of the supply pipe from the base end side to the tip end side of the supply pipe. This can prevent a decrease in the strength of the tip of the supply pipe.
また配管サポートが供給配管と一体に併設されたことに
より、配管サポートによる気液接触塔の開口面積の減少
やＳＯ２吸収性能の低下を防止できる。In addition, since the pipe support is provided integrally with the supply pipe, it is possible to prevent the opening area of the gas-liquid contact tower and the SO 2 absorption performance from decreasing due to the pipe support.
以下、本発明の一実施例を、脱硫装置に使用される吸収
塔内のスプレー配管を例に説明する。第５図に示す様
に、脱硫装置では、SO2を含む排ガスが冷却塔６にて冷
却された後、気液接触塔５内で循環配管７を経て供給さ
れる洗浄液と気液接触して、排ガス中のSO2分が吸収除
去される。この気液接触塔５内にはSO2吸収に必要な段
数の供給配管１１が複数段設置されるのが通常であり、
均一な液膜を形成する様、第３図に示す如くスプレーノ
ズル９が気液接触塔５内の全面に配置されている。Hereinafter, one embodiment of the present invention will be described by taking a spray pipe in an absorption tower used in a desulfurization device as an example. As shown in FIG. 5, in the desulfurizer, the exhaust gas containing SO 2 is cooled in the cooling tower 6 and then comes into gas-liquid contact with the cleaning liquid supplied through the circulation pipe 7 in the gas-liquid contact tower 5. , SO 2 in exhaust gas is absorbed and removed. In the gas-liquid contact tower 5, it is usual to install a plurality of supply pipes 11 in the number of stages required for SO 2 absorption,
As shown in FIG. 3, a spray nozzle 9 is arranged on the entire surface of the gas-liquid contact tower 5 so as to form a uniform liquid film.
該塔５内の主配管１、枝管２は前述の理由により、管内
流速を適正値に保つべく、流量に合せ管径は先端に向つ
て順次小さくなつている。この構造から、従来の配管
は、単独では応力的にも、又たわみの面からも強度的に
弱く、供給配管１１をサポートする為の構造物が必要で
あつた。For the above-mentioned reason, the main pipe 1 and the branch pipe 2 in the tower 5 are gradually reduced in diameter toward the tip in order to keep the flow velocity in the pipe at an appropriate value. Due to this structure, the conventional pipe is weak in strength both in terms of stress and in terms of flexure by itself, and a structure for supporting the supply pipe 11 is required.
本発明では、第１図及び第２図に示すように配管サポー
ト８自体に主配管１の液流路４としての機能を兼備させ
ることにより、第３図に示す様に、供給配管１１と配管
サポートとを別個に設けることを不要としている。この
構造によりまた従来の配管サポート８（図７）によるス
ラリの噴霧できないところがなくなる。第１図の主配管
１は、その形状は２枚のウエブ材を持つＨ形鋼であり、
その強度は気液接触塔５内で変化することなく十分なも
のとなつている。又、洗浄液は２枚のウエブ材の間を流
れるが、極度な長方形断面となつてスラリーによる閉塞
が起らない様、適宜仕切り板10が設けられている。枝管
２は主配管１より左右に延出形成され、この先端にスプ
レーノズル９が取り付けられている。すなわち、本発明
では供給配管１１と一体に併設された配管サポート８を
その占める割合が供給配管の先細の先端に至るほど大き
くなるように形成されている。言い換えると、供給配管
１１の基端側より先端側に至るほど供給配管１１の先細
化に略反比例する形で配管サポート８が大きくなるよう
に形成されている。この実施例では前記仕切り板１０に
より供給配管１１の先細化と配管サポート８の占める割
合の大型化が図られている。In the present invention, as shown in FIG. 1 and FIG. 2, the pipe support 8 itself has the function as the liquid flow path 4 of the main pipe 1, so that as shown in FIG. It is not necessary to provide the support separately. This structure also eliminates the area where the conventional pipe support 8 (FIG. 7) cannot spray the slurry. The main pipe 1 of FIG. 1 is an H-shaped steel having two web members in its shape,
The strength is sufficient without changing in the gas-liquid contact tower 5. Further, although the cleaning liquid flows between the two web materials, a partition plate 10 is appropriately provided so that the cleaning liquid has an extremely rectangular cross section and is not clogged by the slurry. The branch pipe 2 is formed so as to extend from the main pipe 1 to the left and right, and a spray nozzle 9 is attached to the tip thereof. That is, in the present invention, the proportion of the pipe support 8 integrally provided with the supply pipe 11 is formed so as to increase toward the tapered tip of the supply pipe. In other words, the pipe support 8 is formed so as to be substantially inversely proportional to the tapering of the supply pipe 11 from the base end side to the tip end side of the supply pipe 11. In this embodiment, the partition plate 10 serves to taper the supply pipe 11 and increase the proportion of the pipe support 8.
次に、上記実施例の作用を説明する。主配管１の液流路
４内を流れてきた洗浄液が枝管２を通りスプレーノズル
９より噴霧される。このとき、主配管１は配管サポート
８の本体により形成されているため、それだけで充分な
強度があり、たわむこともない。また、ウエブ材間の間
隔調整及び仕切り板１０の使用により適切な液流速も得
ることが可能である。尚、本実施例では、枝管２の延出
部の取り付け構造も、主配管１側が平板である為に、穴
明け作業や枝管２の接続溶接作業も円管同志の場合に比
べて平面作業となつて容易となる。更に、この構造とし
た場合の、構造上の信頼性に関しても、液圧により各フ
ランジ材及びウエブ材に発生する応力と、重量支持の為
に長手方向に働く応力が、方向的に直交して重ならない
ことから、余分な応力が働かず問題とはならない。Next, the operation of the above embodiment will be described. The cleaning liquid flowing in the liquid flow path 4 of the main pipe 1 is sprayed from the spray nozzle 9 through the branch pipe 2. At this time, since the main pipe 1 is formed by the main body of the pipe support 8, it has sufficient strength and does not bend. Further, it is possible to obtain an appropriate liquid flow rate by adjusting the gap between the web members and using the partition plate 10. In this embodiment, since the main pipe 1 side is a flat plate in the mounting structure of the extension part of the branch pipe 2, the drilling work and the connection welding work of the branch pipe 2 are flat as compared with the case of the circular pipes. It becomes easy to work. Furthermore, regarding the structural reliability of this structure, the stress generated in each flange material and web material by hydraulic pressure and the stress acting in the longitudinal direction for weight support are directionally orthogonal. Since they do not overlap, extra stress does not work and it is not a problem.
第４図は本発明の他実施例を示す要部斜視図である。こ
の構造は、従来の主配管１に、強度不足分を補償する為
の補強材すなわち、配管サポート８を取り付けたもの
で、主配管１と配管サポート８の合成断面性能により、
荷重を支持するものである。すなわち、配管サポート８
は水平なフランジ部分とそれにＴ字状に連なる垂直なウ
ェブ部分とから成り、垂直なウェブ部分が先端に至るほ
ど大きくなるように形成されている。FIG. 4 is a perspective view of an essential part showing another embodiment of the present invention. In this structure, a reinforcing material for compensating for the insufficient strength, that is, a pipe support 8 is attached to the conventional main pipe 1, and due to the combined sectional performance of the main pipe 1 and the pipe support 8,
It supports the load. That is, the piping support 8
Is composed of a horizontal flange portion and a vertical web portion connected to it in a T shape, and is formed such that the vertical web portion becomes larger toward the tip.
この実施例によれば、従来の配管構造をほとんど変更す
ることなく、支持能力のみを向上させることができる。According to this embodiment, it is possible to improve only the supporting ability without changing the conventional piping structure.
本発明によれば、供給配管と配管サポートのいずれか一
方の本体に他方の本体が一体に併設すると共に、供給配
管の管径は先端に向かって順次小さくなる先細に形成し
ので、該先細構造により液量が減少することによる液流
速の低下を防止でき、もって配管先端まで適正な流速で
洗浄液を供給することができると共に、このように供給
配管を先細に形成すると供給配管それ自体の強度が低下
するが、該配管と一体に併設された配管サポートをその
占める割合が供給配管の先細の先端に至るほど大きくな
るように形成したので、供給配管の先端の強度低下が防
止できる。According to the present invention, one of the main body of the supply pipe and the pipe support is integrally provided with the other main body, and the pipe diameter of the supply pipe is formed so as to become gradually smaller toward the tip. It is possible to prevent a decrease in the liquid flow rate due to a decrease in the amount of liquid, and thus it is possible to supply the cleaning liquid to the tip of the pipe at an appropriate flow rate, and if the supply pipe is tapered in this way, the strength of the supply pipe itself will increase. Although it decreases, the pipe support integrally provided with the pipe is formed so that the proportion of the pipe support increases toward the tapered tip of the supply pipe, so that the reduction in strength of the tip of the supply pipe can be prevented.
しかも、別個の配管サポートが無い為、気液接触塔の開
口面積の減少が防げると共に、第２図と第７図の比較か
ら明らかな様に、噴霧液の噴射方向が阻害されることが
なく気液接触塔内の全域に均一な液膜が形成できる。こ
の事は気液接触塔の有効断面の増加、吸収効率の向上を
もたらす。Moreover, since there is no separate pipe support, reduction of the opening area of the gas-liquid contact tower can be prevented, and as is clear from the comparison between FIG. 2 and FIG. 7, the spray direction of the spray liquid is not obstructed. A uniform liquid film can be formed in the entire area of the gas-liquid contact tower. This brings about an increase in the effective area of the gas-liquid contact tower and an improvement in the absorption efficiency.
又、各段の高さが主配管のみの高さとなつたことで、大
型塔においても、枝管間の段間隔が短かくなり、気液接
触塔の大型化に伴う高さもそれだけ低くすることができ
る。Also, since the height of each stage is the same as the height of the main pipe only, the stage spacing between the branch pipes will be short even in large towers, and the height associated with the upsizing of the gas-liquid contact tower will be reduced accordingly. You can
一方、従来の配管サポートの削除は塔内構造を簡素化さ
せ、非常に経済的な塔を提供できる。On the other hand, the elimination of the conventional piping support can simplify the internal structure of the tower and provide a very economical tower.
前述のトラス構造の場合に問題となつた主配管の方向性
の問題も、本発明では各配管が単独に成立することから
任意に配置でき、最適なスプレー配置が可能となつてい
る。The problem of the directionality of the main pipe, which has been a problem in the case of the truss structure described above, can be arbitrarily arranged because each pipe is independently established in the present invention, and the optimum spray arrangement is possible.
第１図は、本発明の一実施例を示す要部斜視図であり、
気液接触塔内の主配管の構造を示し、第２図は第１図の
主配管の断面図を示し、第３図は第１図の配管を使用す
る場合の気液接触塔の要部平面図を示し、第４図は、本
発明の他の実施例を示す要部斜視図で、第５図は、湿式
脱硫装置の気液接触塔廻りの概略フロー図を示し、第６
図は、気液接触塔内の洗浄液供給配管の従来構造を示
し、第７図は、第６図のうちスプレーノズル付近の様子
を示す構成図であり、第８図は、第６図の配管の平面図
を示す。 ５……気液接触塔、８……配管サポート、 ９……スプレーノズル、１１……供給配管。FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention.
The structure of the main pipe in the gas-liquid contact tower is shown, FIG. 2 is a sectional view of the main pipe of FIG. 1, and FIG. 3 is the main part of the gas-liquid contact tower when the pipe of FIG. 1 is used. FIG. 4 is a plan view, FIG. 4 is a perspective view of an essential part of another embodiment of the present invention, and FIG. 5 is a schematic flow diagram around a gas-liquid contact tower of a wet desulfurization apparatus, and FIG.
FIG. 7 shows a conventional structure of a cleaning liquid supply pipe in a gas-liquid contact tower, FIG. 7 is a constitutional view showing a state around a spray nozzle in FIG. 6, and FIG. 8 is a pipe of FIG. FIG. 5 ... Gas-liquid contact tower, 8 ... Piping support, 9 ... Spray nozzle, 11 ... Supply piping.
Claims (1)
て洗浄液を供給する供給配管と、該供給配管に設けられ
たスプレーノズルと、供給配管を支持する配管サポート
を備えた排ガス洗浄装置であって、前記供給配管と配管
サポートのいずれか一方の本体に他方の本体が一体に併
設されると共に、供給配管は管内流速を適正値に保つべ
く洗浄液流量に合わせて管径は先端に向かって順次小さ
くなる先細に形成され、配管サポートはその占める割合
が供給配管の先細の先端に向かう程大きくなるように形
成されたことを特徴とする排ガス洗浄装置。1. A gas-liquid contact tower, a supply pipe arranged in the gas-liquid contact tower for supplying a cleaning liquid, a spray nozzle provided in the supply pipe, and a pipe support for supporting the supply pipe. In the exhaust gas cleaning device, one of the supply pipe and the pipe support is integrally provided with the other main body, and the supply pipe has a pipe diameter that matches the flow rate of the cleaning liquid in order to maintain the pipe flow velocity at an appropriate value. The exhaust gas cleaning device is characterized in that the pipe support is formed in a taper shape that gradually decreases toward the tip, and the pipe support is formed so that the proportion thereof increases toward the taper end of the supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60202580A JPH0628694B2 (en) | 1985-09-13 | 1985-09-13 | Exhaust gas cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60202580A JPH0628694B2 (en) | 1985-09-13 | 1985-09-13 | Exhaust gas cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6261617A JPS6261617A (en) | 1987-03-18 |
| JPH0628694B2 true JPH0628694B2 (en) | 1994-04-20 |
Family
ID=16459840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60202580A Expired - Fee Related JPH0628694B2 (en) | 1985-09-13 | 1985-09-13 | Exhaust gas cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628694B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0882487B1 (en) * | 1996-02-01 | 2003-04-09 | Mitsubishi Heavy Industries, Ltd. | Apparatus for desulfurizing exhaust gas |
| US7730908B2 (en) * | 2006-03-24 | 2010-06-08 | Babcock & Wilcox Power Generation Group, Inc. | Self supporting reinforced header |
| WO2017100695A1 (en) * | 2015-12-10 | 2017-06-15 | Velo3D, Inc. | Skillful three-dimensional printing |
| CN106035002A (en) * | 2016-06-15 | 2016-10-26 | 镇江市都市生态农业有限公司 | Ecological agriculture water supplying device |
| US11691343B2 (en) | 2016-06-29 | 2023-07-04 | Velo3D, Inc. | Three-dimensional printing and three-dimensional printers |
| WO2022044296A1 (en) * | 2020-08-28 | 2022-03-03 | 三菱重工業株式会社 | Spray tube support structure of flue gas desulfurisation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095439U (en) * | 1973-12-29 | 1975-08-09 |
-
1985
- 1985-09-13 JP JP60202580A patent/JPH0628694B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6261617A (en) | 1987-03-18 |
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|---|---|---|---|
| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |