JPH0620509B2 - Dry desulfurization or denitration equipment - Google Patents
Dry desulfurization or denitration equipmentInfo
- Publication number
- JPH0620509B2 JPH0620509B2 JP63185654A JP18565488A JPH0620509B2 JP H0620509 B2 JPH0620509 B2 JP H0620509B2 JP 63185654 A JP63185654 A JP 63185654A JP 18565488 A JP18565488 A JP 18565488A JP H0620509 B2 JPH0620509 B2 JP H0620509B2
- Authority
- JP
- Japan
- Prior art keywords
- louver
- outlet
- particles
- opening
- 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 - Lifetime
Links
Landscapes
- Separation Of Gases By Adsorption (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は乾式の脱硫装置、又は脱硝装置、特にその出口
側ルーバーの構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dry desulfurization apparatus or denitration apparatus, and more particularly to the structure of an outlet louver thereof.
（従来技術） 活性炭等の粒子状吸着剤、又は粒子状触媒をゆっくり移
動させながら処理ガスと接触させ、脱硫又は脱硝を行な
わせる装置に於て、吸着剤又は触媒粒子を充満して一定
方向に移動させ得る反応層のガス入口側とガス出口側
は、ガスは通過できるが、粒子はこぼれ出ない構造とし
なければならない。この為仕切板の構造をルーバー構造
としているが、ガス出口側のルーバーはその開口部を大
きくすると、粒子がガス流により吹き飛ばされ、逆に開
口部を小さくすると目詰りを起こして、ガスの偏流を起
したり圧損の上昇をまねくことになる。(Prior Art) In an apparatus for performing desulfurization or denitration by bringing a particulate adsorbent such as activated carbon or a particulate catalyst into contact with a treatment gas while moving slowly, the adsorbent or catalyst particles are filled in a certain direction. The gas inlet side and gas outlet side of the movable reaction layer must have a structure in which gas can pass but particles do not spill out. For this reason, the partition plate has a louver structure, but if the opening of the louver on the gas outlet side is enlarged, particles are blown away by the gas flow, and conversely if the opening is made smaller, clogging occurs and gas drifts. Cause or increase in pressure loss.
第４図は従来型のルーバー構造を示し、１は入口側ルー
バー、２は出口側ルーバー、３はルーバー１と２間に詰
められた粒子層の移動方向を示す。４はガス流れ方向
で、ガスは入口側ルーバーから粒子層を貫通し、出口側
ルーバー２から出てゆく。５はこのようなガス流によっ
て出口側ルーバーから吹きとばされた粒子で、流速の低
い部分にはダスト６（第４図(ｃ)）が堆積することを示
している。FIG. 4 shows a conventional louver structure, 1 is an inlet louver, 2 is an outlet louver, and 3 is a moving direction of a particle layer packed between the louvers 1 and 2. 4 is a gas flow direction, and the gas penetrates the particle layer from the inlet louver and exits from the outlet louver 2. Reference numeral 5 indicates particles blown from the louver on the outlet side by such a gas flow, and dust 6 (FIG. 4 (c)) is accumulated in the portion where the flow velocity is low.
第４図(ｂ)は第４図(ａ)におけるルーバー開口部の部分
拡大図を示し、この開口部におけるガス流速は図の曲線
ａにて示すような、ガス流速分布を呈する。すなわちル
ーバーの出口開口を構成する上側素材に近い程流速が大
きくなっている。このため第４図(ｃ)の如く、流速の大
きい部分（図の上側）で粒子５がとび出し、流速の小さ
い部分（図の下側）ではダスト６が堆積する。FIG. 4 (b) is a partially enlarged view of the louver opening in FIG. 4 (a), and the gas flow velocity at this opening exhibits a gas flow velocity distribution as shown by the curve a in the figure. That is, the flow velocity increases as it approaches the upper material forming the outlet opening of the louver. For this reason, as shown in FIG. 4 (c), the particles 5 jump out at the high flow velocity portion (upper side of the figure), and the dust 6 accumulates at the low flow rate portion (lower side of the figure).
第５図(ａ)は従来型の別の例を示し、この場合には入口
側ルーバー１の開口巾は大きいが、出口側ルーバー２は
断面が二等辺三角形をなした素材Ｃ・・・で構成されて
おり、その二等辺三角形の底辺間の巾は極めて小さくで
きている。即ち粒子径よりも小さい開口巾となってい
る。このような構造の場合は長期間の運転をすることに
より、摩耗又は破損により、小粒径になった粒子が開口
部を詰らせる（第５図(ｃ)）という問題を生ずる。FIG. 5 (a) shows another example of the conventional type. In this case, although the opening width of the inlet side louver 1 is large, the outlet side louver 2 is a material C ... whose cross section is an isosceles triangle. The width between the bases of the isosceles triangle is extremely small. That is, the opening width is smaller than the particle diameter. In the case of such a structure, there is a problem that particles having a small particle size will clog the opening due to wear or damage due to long-term operation (Fig. 5 (c)).
第５図(c)，(d)，(e)，(f)，(g)，(h)，(i)，(j)は夫夫
出口側ルーバー２の種々の例であるが、これらは何れも
粒子径よりも小さい開口巾になるよう構成されており、
夫々前記した如き問題を有している。FIGS. 5 (c), (d), (e), (f), (g), (h), (i), and (j) are various examples of the husband-outlet side louver 2. Are configured to have an opening width smaller than the particle size,
Each has the problems described above.
（発明が解決しようとする課題） 従来技術の問題点に鑑み、ガス出口側で粒子の目詰りを
起してガスの偏粒を起したり、圧損の上昇を来すことの
ない出口側ルーバーを提供することを課題とする。(Problems to be Solved by the Invention) In view of the problems of the prior art, an outlet louver that does not cause particle clogging on the gas outlet side to cause uneven gas distribution or increase in pressure loss. The challenge is to provide.
（発明による課題の解決手段） 入口側ルーバーと出口側ルーバーとの間に粒子層を移動
させ、該移動粒子層を横切って被処理ガスを流動させる
乾式の脱硫脱硝装置において、前記出口側ルーバーを網
目状に形成し、その開口部が粒子層の移動方向に対して
粒子を内側に押し込む方向に傾斜するよう、ルーバーを
構成する傾斜素材を水平面に対し３０゜以上の傾斜角で
傾斜させ、該傾斜素材の傾斜面の巾Ｗ２を最大粒子径の
０．２〜２．０倍、又は平均粒子径の０．４〜４．０倍
とし、前記傾斜素材の最大開口巾Ｗ１を最大粒子径の
０．１〜１．０倍、又は平均粒子径の０．２〜２．０倍
とした。(Means for Solving the Problems According to the Invention) In a dry desulfurization and denitration apparatus in which a particle layer is moved between an inlet louver and an outlet louver, and a gas to be treated flows across the moving particle layer, the outlet louver is The louver-forming inclined material is inclined at an inclination angle of 30 ° or more with respect to the horizontal plane so that the opening is inclined in the direction of pushing the particles inward with respect to the moving direction of the particle layer. The width W 2 of the inclined surface of the inclined material is 0.2 to 2.0 times the maximum particle diameter or 0.4 to 4.0 times the average particle diameter, and the maximum opening width W 1 of the inclined material is the maximum particle diameter. The diameter was 0.1 to 1.0 times, or the average particle diameter was 0.2 to 2.0 times.
（実施例） さて、実験結果によると、粒子は移動中に摩耗や機械的
な破損が生じ、第６図に示す如き粒度分布となる。即ち
初充填粒子又は運転中の補給粒子の粒度分布は分布曲線
ａの如くであるが、長期間運転後には、分布曲線ｂの如
く全体的に小径側に移行する。本願発明は、このように
粒子が小径化しても目詰りを生じない出口側ルーバーを
提供するものである。(Example) Now, according to the experimental results, the particles are abraded and mechanically damaged during movement, and have a particle size distribution as shown in FIG. That is, the particle size distribution of the initially packed particles or the replenishment particles during operation is as shown by the distribution curve a, but after long-term operation, the particle size is generally shifted to the smaller diameter side as shown by the distribution curve b. The present invention provides an outlet-side louver that does not cause clogging even when the particle size is reduced.
第１図は本発明に係る出口側ルーバー2aを用いた脱硫脱
硝装置の断面図である。第１図(ｂ)に示す如く、出口側
ルーバー2aは粒子の移動方向に向って傾斜した傾斜素材
７・・・を平行に配列して構成されている。各傾斜素材
７・・・は互に連結され、第２図(ａ)に示すごとく網目
状をなしている。FIG. 1 is a sectional view of a desulfurization and denitration apparatus using the outlet louver 2a according to the present invention. As shown in FIG. 1 (b), the outlet-side louver 2a is formed by arranging inclining materials 7 ... Inclined in the particle moving direction in parallel. .. are connected to each other and form a mesh shape as shown in FIG. 2 (a).
傾斜素材７間の最大開口巾Ｗ１（第２図(ｃ)）は最大粒
子径ｄの０．１〜１．０倍、又は平均粒子径の０．２〜
２．０倍である。又、各傾斜素材７の素材巾Ｗ2(第２図
(ｃ))は最大粒子ｄの０．２〜２．０倍又は平均粒子径
の０．４〜４．０倍、各傾斜素材７の傾斜角αは水平面
に対して３０゜以上となっている。なお、ここで粒子径
とはＪＩＳ標準ふるいによって測定した重量表示の値を
いうものとする。The maximum opening width W 1 (FIG. 2 (c)) between the inclined materials 7 is 0.1 to 1.0 times the maximum particle diameter d, or 0.2 to the average particle diameter.
It is 2.0 times. Also, the material width W 2 of each inclined material 7 (Fig. 2
(c) is 0.2 to 2.0 times the maximum particle d or 0.4 to 4.0 times the average particle diameter, and the inclination angle α of each inclined material 7 is 30 ° or more with respect to the horizontal plane. There is. In addition, a particle diameter means the value of the weight display measured by the JIS standard sieve here.
第２図はこのような出口側ルーバー２をエキスパンドメ
タルにて構成した例を示す。第３図は網目状にプレス成
形したものエキスパンドしないものである。FIG. 2 shows an example in which such an outlet louver 2 is made of expanded metal. FIG. 3 shows a product which is press-formed in a mesh shape and is not expanded.
（効果） 出口側ルーバーを形成する傾斜素材の巾Ｗ2が、最大粒
子径の０．２〜２．０倍、又は平均粒子径の０．４〜
４．０倍程度と小さいことにより、第４図(ａ)，(ｂ)，
(ｃ)に示す如きガスの極部的偏流現象を起すことがな
い。すなわち、かゝる構造である為、その開口率を大き
くすることができ、出口ルーバー部におけるガス流速は
均一で、かつ遅く保たれる為、開口巾Ｗ1より小さい粒
子であっても吹き飛ばされることがなく、粒子が開口部
を塞ぐことがない。(Effect) The width W 2 of the inclined material forming the outlet louver is 0.2 to 2.0 times the maximum particle diameter, or 0.4 to the average particle diameter.
Since it is as small as 4.0 times, as shown in FIGS. 4 (a), (b),
There is no occurrence of a local drift phenomenon of gas as shown in (c). That is, because of such a structure, the aperture ratio can be increased, and the gas flow velocity at the outlet louver portion is kept uniform and slow, so that even particles smaller than the opening width W 1 are blown off. And the particles do not block the opening.
更に粒子を粒子層側に押込む方向に出口側ルーバーを構
成する傾斜素材が傾斜している為、移動粒子に対しこれ
を素材間の開口に向って押し込もうとする粒体からの力
が作用することもない。Furthermore, since the inclined material that constitutes the outlet louver is inclined in the direction that pushes the particles toward the particle layer side, the force from the particles that pushes this toward the opening between the materials against the moving particles is It does not work either.
又かゝる形状を有している為、開口部の最大寸法が最大
粒子径よりかなり大きくても、粒子が出口側ルーバーの
開口部を通り抜けてこぼれ落ちることがない。勿論出口
側ルーバーに接触している粒子は傾斜素材の巾Ｗ2が小
さい為、停滞することな全てが移動しており、第４図
(ｃ)の符号６に示すようなダストの堆積を起さないの
で、圧損の上昇を招くことがない。Further, because of such a shape, even if the maximum size of the opening is considerably larger than the maximum particle diameter, particles do not pass through the opening of the outlet louver and spill. Of course, the particles in contact with the louver on the exit side have a small width W 2 of the inclined material, so that all of them move without being stagnant.
Since the accumulation of dust as shown by reference numeral 6 in (c) does not occur, pressure loss does not increase.
第１図(ａ)は本発明に係るルーバーを使用した脱硫装置
の断面図。 第１図(ｂ)は第１図(ａ)のＡ矢視部拡大図。 第２図(ａ)はエキスパンドメタル状に構成したルーバ
ー。 第２図(ｂ)は第２図(ａ)の一部拡大図。 第２図(ｃ)は第２図(ｂ)のＢ−Ｂ断面図。 第３図(ａ)は多孔板状に成形した出口側ルーバーの実施
例を示す。 第３図(ｂ)は第３図(ａ)のＣ−Ｃ断面図。 第４図(ａ)は従来型ルーバー。 第４図(ｂ)は第４図(ａ)のＤ部拡大図で流速分布状態を
示す。 第４図(ｃ)は第４図(ｂ)と同様部分を示し、この部分で
の粒子の状態を示す。 第５図(ａ)は従来型脱硫装置の断面図。 第５図(ｂ)は第５図(ａ)のＥ部拡大図。 第５図(ｃ)〜(ｊ)は従来型の出口側ルーバーの諸例を示
す。 第６図は脱硫装置における粒子径の変化状態を示すグラ
フ。 図において； １……入口側ルーバー、２……出口側ルーバー 2a……（本発明の）出口側ルーバー ３……粒子の移動方向、４……ガス流れ方向 ５……粒子、６……ダスト ７……傾斜素材FIG. 1 (a) is a cross-sectional view of a desulfurization device using a louver according to the present invention. FIG. 1 (b) is an enlarged view of a portion indicated by an arrow A in FIG. 1 (a). Figure 2 (a) shows the louver in the shape of expanded metal. 2 (b) is a partially enlarged view of FIG. 2 (a). FIG. 2 (c) is a sectional view taken along line BB of FIG. 2 (b). FIG. 3 (a) shows an embodiment of the outlet louver formed in the shape of a perforated plate. FIG. 3 (b) is a sectional view taken along line CC of FIG. 3 (a). Figure 4 (a) shows a conventional louver. FIG. 4 (b) is an enlarged view of the portion D in FIG. 4 (a) showing the flow velocity distribution state. FIG. 4 (c) shows the same portion as FIG. 4 (b), and shows the state of particles in this portion. FIG. 5 (a) is a cross-sectional view of a conventional desulfurization device. FIG. 5 (b) is an enlarged view of part E of FIG. 5 (a). 5 (c) to (j) show various examples of conventional exit side louvers. FIG. 6 is a graph showing changes in particle size in the desulfurizer. In the figure; 1 ... inlet louver, 2 ... outlet louver 2a ... outlet louver (of the present invention) 3 ... particle moving direction, 4 ... gas flow direction, 5 ... particle, 6 ... dust 7 ... Inclined material
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/36 １０１ Ｚ 9042−4Ｄ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B01D 53/36 101 Z 9042-4D
Claims (1)
粒子層を移動させ、該移動粒子層を横切って被処理ガス
を流動させる乾式の脱硫脱硝装置において、前記出口側
ルーバーを網目状に形成し、その開口部が粒子層の移動
方向に対して粒子を粒子層側に押し込む方向に傾斜する
よう、ルーバーを構成する傾斜素材を水平面に対し30゜
以上の傾斜角で傾斜させ、該傾斜素材の傾斜面の巾Ｗ２
を最大粒子径の０．２〜２．０倍、又は平均粒子径の
０．４〜４．０倍とし、前記傾斜素材の最大開口巾Ｗ１
を最大粒子径の０．１〜１．０倍、又は平均粒子径の
０．２〜２．０倍としたことを特徴とする乾式の脱硫又
は脱硝装置。1. A dry desulfurization and denitration apparatus in which a particle layer is moved between an inlet side louver and an outlet side louver, and a gas to be treated flows across the moving particle layer, the outlet side louver having a mesh shape. Inclining the inclined material forming the louver at an inclination angle of 30 ° or more with respect to the horizontal plane so that the opening is inclined in the direction of pushing the particles toward the particle layer side with respect to the moving direction of the particle layer, Width of inclined surface of material W 2
Is 0.2 to 2.0 times the maximum particle diameter or 0.4 to 4.0 times the average particle diameter, and the maximum opening width W 1 of the inclined material is
Was set to 0.1 to 1.0 times the maximum particle size or 0.2 to 2.0 times the average particle size, a dry desulfurization or denitration apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63185654A JPH0620509B2 (en) | 1988-07-27 | 1988-07-27 | Dry desulfurization or denitration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63185654A JPH0620509B2 (en) | 1988-07-27 | 1988-07-27 | Dry desulfurization or denitration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0235913A JPH0235913A (en) | 1990-02-06 |
| JPH0620509B2 true JPH0620509B2 (en) | 1994-03-23 |
Family
ID=16174542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63185654A Expired - Lifetime JPH0620509B2 (en) | 1988-07-27 | 1988-07-27 | Dry desulfurization or denitration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620509B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7695696B2 (en) | 2006-07-19 | 2010-04-13 | Uop Llc | Screenless internals for radial flow reactors |
| AU2008201461B8 (en) * | 2006-07-19 | 2011-06-02 | Uop Llc | Louver front faced inlet ducts |
| US7622089B1 (en) * | 2006-07-19 | 2009-11-24 | Uop Llc | Conically shaped screenless internals for radial flow reactors |
| JP2010132754A (en) * | 2008-12-03 | 2010-06-17 | Mitsubishi Heavy Ind Ltd | Gas adsorption purification apparatus and biomass gasification system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535056U (en) * | 1978-08-29 | 1980-03-06 | ||
| JPS5687426A (en) * | 1979-12-18 | 1981-07-16 | Mitsubishi Heavy Ind Ltd | Solid-gas contact apparatus |
| JPS5843231A (en) * | 1981-09-10 | 1983-03-12 | Babcock Hitachi Kk | Moving bed type reactor |
| JPS6325138A (en) * | 1986-07-18 | 1988-02-02 | Fuji Heavy Ind Ltd | Four-wheel drive device |
-
1988
- 1988-07-27 JP JP63185654A patent/JPH0620509B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0235913A (en) | 1990-02-06 |
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