JP2632168B2 - Two-way powder dispensing and sealing device - Google Patents
Two-way powder dispensing and sealing deviceInfo
- Publication number
- JP2632168B2 JP2632168B2 JP31014487A JP31014487A JP2632168B2 JP 2632168 B2 JP2632168 B2 JP 2632168B2 JP 31014487 A JP31014487 A JP 31014487A JP 31014487 A JP31014487 A JP 31014487A JP 2632168 B2 JP2632168 B2 JP 2632168B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- container
- pipe
- gas
- dispersion plate
- 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
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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、粉体の排出経路を粉体でシール（気密性
を保持）しながら、粉体の供給側とは圧力差のある二方
向へ同時に払い出すための装置に関し、とくに、二方向
の払い出し側の圧力も異なる場合の払い出しも可能な粉
体の二方向払出し兼シール装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a two-way method that has a pressure difference from a powder supply side while sealing a powder discharge path with powder (maintaining airtightness). More particularly, the present invention relates to a two-way powder discharging / sealing apparatus capable of discharging when the pressures on the two-side discharging sides are different.
（従来の技術） 粉体でその排出経路をシールする機能を有する粉体の
払出し装置として、セメントや石炭などを一定量ずつ払
い出す用途については、従来より、第４図に示すよう
に、貯留槽１′の排出口３′に、Ｌ状に屈曲したいわゆ
るＬバルブ管５′の上端を接続し、Ｌバルブ管５′の水
平管部分に貯留槽１′からの粉体を堆積し、この堆積し
た粉体を連続的に導入される窒素ガスなどによってパル
ス的に吹きながら、一定量の粉体を払い出す構造のもの
（以下、前者という）が公知である。また、その他の先
行技術として、粉体排出ダクト下方のＬ状屈曲部に粉体
の流動用ガス吹出しノズルと搬送用ガス吹出しノズルと
を備え、前記Ｌ状屈曲部に堆積した粉体を流動化させな
がら払い出す構造の払出し装置（特開昭52−65367号、
以下後者という）が提案されている。(Prior Art) As a powder dispensing device having a function of sealing a discharge path of the powder, a device for dispensing a fixed amount of cement, coal, or the like has conventionally been used as a storage device as shown in FIG. The upper end of a so-called L valve pipe 5 'bent into an L shape is connected to the discharge port 3' of the tank 1 ', and powder from the storage tank 1' is deposited on the horizontal pipe portion of the L valve pipe 5 '. 2. Description of the Related Art There is known a structure in which a fixed amount of powder is discharged while the deposited powder is blown in a pulsed manner by continuously introducing nitrogen gas or the like (hereinafter, referred to as the former). Further, as another prior art, an L-shaped bent portion below the powder discharge duct is provided with a gas blowing nozzle for flowing the powder and a gas blowing nozzle for transport, and the powder deposited on the L-shaped bent portion is fluidized. A dispensing device with a dispensing structure (Japanese Patent Laid-Open No. 52-65367,
The latter is referred to below).
（発明が解決しようとする問題点） しかしながら、上記した従来の粉体払出し装置は、下
記のような点で問題があった。(Problems to be Solved by the Invention) However, the above-described conventional powder dispensing apparatus has problems in the following points.
（ａ）前者および後者のいずれも払出し方向が一方向で
あり、二方向への払い出しはできない。(A) In both the former and the latter, the payout direction is one direction, and payout in two directions is not possible.
（ｂ）前者又は後者の下流側に分岐管を設け、その分岐
部に機械式切換弁を配備して、この切換弁で払い出し方
向を切り換えて二方向へ払い出せるように構成すること
が考えられるが、このような機械式の弁を用いた構成で
は、弁体と管壁との間隙に粉粒体が嵌入して弁が切り換
えできなくなるなどの種々のトラブルが発生するおそれ
がある。(B) It is conceivable that a branch pipe is provided downstream of the former or the latter, and a mechanical switching valve is provided at the branch part, so that the discharging direction can be switched by the switching valve to discharge in two directions. However, in the configuration using such a mechanical valve, there is a possibility that various troubles may occur such that the valve cannot be switched because the granular material fits into the gap between the valve body and the pipe wall.
（ｃ）前記（ｂ）の構成では、二方向へ同時に払い出す
ことができない。また、前記分岐部の切換弁を取りのぞ
いて同時に二方向へ払い出すように構成すると、二方向
の払出し側間の圧力に差がある場合に、両払出し間の圧
力を保持できず、また、高圧側へは粉体を払い出せない
おそれがある。(C) In the configuration of (b), it is not possible to pay out in two directions at the same time. In addition, if it is configured to simultaneously discharge in two directions except for the switching valve of the branch portion, when there is a difference in pressure between the discharge sides in the two directions, it is not possible to maintain the pressure between both discharges, There is a possibility that the powder cannot be discharged to the high pressure side.
（ｄ）たとえば製鉄原料に使用される鉄鉱石のように幅
広い粒度分布をもつ粉体を払い出す場合に、前者は、閉
塞防止の面から貯留槽の排出口を最大粒度の粉体が通過
できる程度に大きく設定しておかなければならないが、
そのように大きくすると、粉体の払出し量を一定にする
ことができない。また、後者は、粒度の大きい粉体を流
動化するのが困難で、スムーズに払い出しできないた
め、排出口が閉塞されるおそれがある。(D) When dispensing powder having a wide particle size distribution, such as iron ore used for ironmaking raw materials, the former allows the powder having the maximum particle size to pass through the outlet of the storage tank in order to prevent clogging. It must be set to a large extent,
With such an increase, the amount of powder dispensed cannot be made constant. In the case of the latter, it is difficult to fluidize powder having a large particle size, and the powder cannot be dispensed smoothly.
（発明の目的） この発明は上述の点に鑑みてなされたもので、粉体で
排出経路をシールしながら同時に二方向へ払い出すこと
ができ、また、供給側および二方向の払出し側間の差圧
を保持でき、しかも、幅広い粒度分布を有する粉体を払
い出すことができ、粒度の大きな粉体の払い出しもスム
ーズで排出口が閉塞されることがなく、さらに、粉体の
一方向への払出し量を調整することにより、分散板上の
粉体の堆積量を一定にして確実に排出経路をシールでき
る粉体の二方向払出し兼シール装置を提供しようとする
ものである。(Purpose of the Invention) The present invention has been made in view of the above points, and can simultaneously discharge in two directions while sealing a discharge path with powder. It can hold the differential pressure, and can discharge powder with a wide particle size distribution, and can smoothly discharge large-sized powder without blocking the discharge port. It is an object of the present invention to provide a two-way powder discharging / sealing apparatus capable of keeping the amount of powder deposited on the dispersion plate constant and reliably sealing the discharge path by adjusting the discharging amount of the powder.
（問題点を解決するための手段） 上記した目的を達成するためのこの発明の要旨とする
ところは、筒状容器内の底部寄りに、多数のガス通孔を
穿設した分散板を配設し、この分散板の適所に開設した
排出口より容器底部を貫通して第１粉体排出管を下方へ
延設するとともに、容器頂部を貫通して前記分散板の上
部に粉体供給管を挿設し、容器底部付近にはガス導入管
を接続するとともに、第２粉体排出管を容器中腹部もし
くはその上方に接続し、容器底部付近より導入したガス
により容器内の粉体を流動化させ、前記粉体供給管の下
端部が流動層内に埋まるようにし、その粉体の一部を前
記ガスに伴って前記第２粉体排出管から排出するように
したことである。(Means for Solving the Problems) The gist of the present invention for achieving the above object is to dispose a dispersion plate having a large number of gas through holes near the bottom in a cylindrical container. Then, a first powder discharge pipe extends downward through the bottom of the container from a discharge port opened at an appropriate position of the dispersion plate, and a powder supply pipe extends above the dispersion plate through the top of the container. A gas introduction pipe is connected near the bottom of the vessel, and a second powder discharge pipe is connected to the middle part of the vessel or above it, and the powder in the vessel is fluidized by gas introduced from near the bottom of the vessel. Then, the lower end of the powder supply pipe is buried in the fluidized bed, and a part of the powder is discharged from the second powder discharge pipe along with the gas.
（作用） この発明の二方向払出し兼シール装置によれば、粉体
供給管より容器内に供給された粉体は、既に分散板上で
流動化している粉体中に落下して、供給管の下端部はこ
の流動化している粉体中に常時埋入して供給管側、第１
粉体排出管側および第２粉体排出管側間の差圧が保持さ
れる、そして、第１粉体排出管付近の粉体は第１粉体排
出管から下方へ払い出され、また、分散板上の粉体はそ
の通孔を上昇するガス流によって流動化され、同時に粉
体の塊状化も防止されて、粉体の一部は前記ガスの上昇
に伴って第２粉体排出管から払い出される。(Operation) According to the two-way dispensing and sealing device of the present invention, the powder supplied into the container from the powder supply pipe falls into the powder already fluidized on the dispersion plate, and the supply pipe The lower end is always embedded in this fluidized powder,
The differential pressure between the powder discharge tube side and the second powder discharge tube side is maintained, and the powder near the first powder discharge tube is discharged downward from the first powder discharge tube, The powder on the dispersion plate is fluidized by the gas flow rising through the through hole, and at the same time, agglomeration of the powder is prevented. Will be paid out.
（実施例） 以下、この発明の実施例を図面に基づいて説明する。
第１図はこの発明の粉体の二方向払出し兼シール装置を
示す断面図である。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view showing a two-way powder discharging / sealing apparatus of the present invention.
図において、１は上下両端が閉塞された筒状容器で、
この容器１内の底部寄りに、多数のガス通孔2aが穿設さ
れた分散板２が配設されている。なお、各ガス通孔2a上
には、ガス通孔2aからの粉体の落下防止のため、第２図
に示すように、横向きのガス通孔2bを有する下端開口の
円筒形のカバー2cが一体に装着されている。また、分散
板２の中央部には排出口３が開設され、この排出口３よ
り容器１の底部を貫通して第１粉体排出管４が下方へ延
設されている。In the figure, 1 is a cylindrical container whose upper and lower ends are closed,
A dispersing plate 2 having a large number of gas through holes 2a is disposed near the bottom of the container 1. In addition, on each gas passage 2a, as shown in FIG. 2, a cylindrical cover 2c having a lower end opening having a horizontal gas passage 2b is provided to prevent powder from falling from the gas passage 2a. They are attached together. A discharge port 3 is formed at the center of the dispersion plate 2, and a first powder discharge pipe 4 extends downward from the discharge port 3 through the bottom of the container 1.
５は粉体供給管で、この供給管５は容器１頂部を貫通
して前記分散板２の排出口３の直上まで挿設されてい
る。Reference numeral 5 denotes a powder supply pipe. The supply pipe 5 penetrates the top of the container 1 and is inserted up to just above the discharge port 3 of the dispersion plate 2.
６はガス導入管で、このガス導入管６の一端は容器１
の底部付近（前記分散板２下方）に接続され、また、導
入管６の他端は流量調節弁７を介してガス供給源８に接
続されている。なお、このガスには、窒素ガスなどの不
活性ガスが主として用いられる。９は第２粉体排出管
で、この第２粉体排出管９は容器１の中腹部もしくはそ
の上方に接続されている。Reference numeral 6 denotes a gas introduction pipe, and one end of the gas introduction pipe 6 is connected to the container 1
And the other end of the introduction pipe 6 is connected to a gas supply source 8 via a flow control valve 7. Note that an inert gas such as a nitrogen gas is mainly used as the gas. Reference numeral 9 denotes a second powder discharge pipe, and the second powder discharge pipe 9 is connected to the middle part of the container 1 or above it.
10は差圧検出器で、容器１内の分散板２上部と容器１
内の頂部付近とに圧力検出端子10a,10bがそれぞれ配備
され、両端子10a,10bで検出された圧力値PA及びPBが差
圧検出器10に送られて両者間の圧力差ΔＰが検出され
る。そして、検出器10によって検出された差圧値ΔＰ
は、前記流量調節弁７の制御装置11に送られる。また、
制御装置11では前記差圧値が予め設定された差圧値に等
しいか否かが比較され、両差圧値が異なる場合には、調
節弁７の開度が調節され、容器１内へのガスの導入量が
増減されるようになっている。12は前記粉体供給管５内
に設置される粉体のレベル計で、このレベル計12は前記
粉体供給管５の上部に配備され、供給管５内の粉体がレ
ベル計12の高さまで堆積してレベル計12に接触した時に
は、前記制御装置11を介し調節弁７の開度を規定増量分
さらに開いて容器１内へのガスの導入量を増大するか、
あるいは前記レベル計12を連続計測用レベル計に構成し
て、そのレベル信号を外部設定信号として制御装置11に
入力し、制御すべき設定差圧値をレベル信号により自動
的に変更する。Reference numeral 10 denotes a differential pressure detector, which is disposed above the dispersion plate 2 in the container 1 and the container 1
Pressure detection terminal 10a in the vicinity of the top of the inner, 10b are deployed, respectively, both terminals 10a, the detected pressure value P A and P B at 10b is the pressure difference ΔP between the two is sent to the pressure difference detector 10 Is detected. Then, the differential pressure value ΔP detected by the detector 10
Is sent to the control device 11 of the flow control valve 7. Also,
The controller 11 compares whether or not the differential pressure value is equal to a preset differential pressure value. If the differential pressure values are different, the opening of the control valve 7 is adjusted, and The amount of gas introduced is increased or decreased. Reference numeral 12 denotes a powder level meter installed in the powder supply pipe 5, and the level meter 12 is provided above the powder supply pipe 5. When the accumulated gas is brought into contact with the level meter 12, the control valve 11 is used to further open the control valve 7 by a specified amount to increase the amount of gas introduced into the container 1.
Alternatively, the level meter 12 is configured as a level meter for continuous measurement, the level signal is input to the control device 11 as an external setting signal, and the set differential pressure value to be controlled is automatically changed by the level signal.
つぎに、上記した実施例の装置について、その使用態
様を説明する。第１図において、粉体供給管５から容器
１内に供給された粉体は、その直下の第１粉体排出管４
内へ落下し、この第１粉体排出管４内が粉体で一杯にな
ると、分散板２上に堆積していく。そして、分散板２上
に堆積する粉体の高さが一定のレベルに達する（この状
態で供給管５の少なくとも下端部は粉体中に埋まる）
と、前記調節弁７を開放してガス導入管６より容器１内
の分散板２下方にガスを導入する。容器１内に導入され
たガスは、分散板２のガス通孔2a,2bを上方に吹き抜け
て、分散板２上の粉体を流動化させる。また、容器１内
に導入されたガスは、容器１の空塔部より第２粉体排出
管９へ排出されるが、この排出されるガスに伴って流動
層の上方に浮遊する粉体が第２粉体排出管９から、（他
の容器へ）払い出される。Next, the mode of use of the apparatus of the above embodiment will be described. In FIG. 1, the powder supplied from the powder supply pipe 5 into the container 1 is supplied to a first powder discharge pipe 4 immediately below the powder supply pipe 5.
When the inside of the first powder discharge pipe 4 becomes full of powder, the powder is deposited on the dispersion plate 2. Then, the height of the powder deposited on the dispersion plate 2 reaches a certain level (at least the lower end of the supply pipe 5 is buried in the powder in this state).
Then, the control valve 7 is opened and gas is introduced from the gas introduction pipe 6 below the dispersion plate 2 in the container 1. The gas introduced into the container 1 blows up through the gas passage holes 2a and 2b of the dispersion plate 2 to fluidize the powder on the dispersion plate 2. Further, the gas introduced into the container 1 is discharged from the empty tower portion of the container 1 to the second powder discharge pipe 9, and powder floating above the fluidized bed with the discharged gas is discharged. The powder is discharged from the second powder discharge pipe 9 (to another container).
一方、前記供給管５から供給される粉体の一部および
分散板２上の粉体の一部は、第１粉体排出管４から（他
の容器へ）払い出される。なお、容器１内に供給される
粉体のうち、とくに粒度の大きいものは供給管５から第
１粉体排出管４へ直接落下するので、容器１内に堆積す
ることなく払い出される。On the other hand, a part of the powder supplied from the supply pipe 5 and a part of the powder on the dispersion plate 2 are discharged from the first powder discharge pipe 4 (to another container). Note that among the powders supplied into the container 1, those having a particularly large particle size fall directly from the supply pipe 5 to the first powder discharge pipe 4, and are discharged without accumulating in the container 1.
ところで、前記差圧検出器10によって検出される分散
板２上部と頂部付近との差圧ΔＰ（この差圧は分散板２
上に流動化している粉体の高さに比例する）が設定圧と
異なる場合は、容器１内に導入されるガスの流量が調整
され、これにより第２粉体排出管９からの粉体の払出し
量が調整（増量又は減量）されるので、分散板２上の粉
体の高さは所定の高さにもどる。この結果、前記差圧Δ
Ｐは設定圧になる。Meanwhile, the differential pressure ΔP between the upper portion and the vicinity of the top of the dispersion plate 2 detected by the differential pressure detector 10 (this differential pressure is
(In proportion to the height of the fluidized powder above) is different from the set pressure, the flow rate of the gas introduced into the container 1 is adjusted, whereby the powder from the second powder discharge pipe 9 is adjusted. Is adjusted (increase or decrease), the height of the powder on the dispersion plate 2 returns to the predetermined height. As a result, the differential pressure Δ
P becomes the set pressure.
このようにして、分散板２上の粉体の高さは規定値に
保たれるので、粉体の供給側圧力P0と二方向の払出し側
圧力P1,P2がそれぞれ保持されることになる。また、前
記実施例では、粉体供給管５と第１粉体排出管４の水平
方向の位置を一致させたが、粉体の粒度分布の幅が小さ
い場合は、供給管５と第１粉体排出管４（排出口３を含
む）の位置をズラして供給管５からの粉体がいったん分
散板２上に堆積するようにしてもよい。In this manner, the height of the powder on the dispersion plate 2 is so maintained a predetermined value, the payout side pressure P 1 on the feed side pressure P 0 of the powder and the two-way, P 2 are held respectively become. In the above embodiment, the positions of the powder supply pipe 5 and the first powder discharge pipe 4 in the horizontal direction are matched, but when the width of the particle size distribution of the powder is small, the supply pipe 5 and the first powder The position of the body discharge pipe 4 (including the discharge port 3) may be shifted so that the powder from the supply pipe 5 is temporarily deposited on the dispersion plate 2.
第３図はこの発明の前記実施例の払出し兼シール装置
を備えた製鉄用の溶融還元系統図である。図に示すプロ
セスは、溶融還元工程で発生する高温の還元力を有する
ガスを用いて鉄鉱石を固体状態で予備還元し、そののち
溶融還元するもので、21が溶融還元炉、31が予備還元炉
で、予備還元炉31は、幅広い粒度分布を有する鉄鉱石を
同時に予備還元し、粗粒状の鉱石と微粉粒状の鉱石とを
それぞれ別々に排出する構造からなる。この予備還元炉
31の特徴的な構成は、還元ガスを整流するための通孔を
配した分散板36を漏斗状に形成して炉体底部寄りに設置
し、その中央部に排出管34を接続するとともに、炉31頂
部に接続した還元ガスの排出管35には、サイクロンセパ
レータ38を介装し、そのサイクロンセパレータ38の底部
に本発明の二方向払出し兼シール装置Ａを接続してい
る。そして、この装置Ａの前記第２粉体排出管９が、予
備還元炉31の中腹部に接続されている。ところで、前記
予備還元炉31では、供給管32から炉内に装入された鉄鉱
石は、粗粒、中粒、微粉粒がそれぞれ炉内において、移
動層37a、気泡流動層37b、高速循環流動層37cを形成し
て還元ガスと接触・反応し、予備還元されて中・粗粒鉱
石は分散板36の排出管34からＬバルブ42および予備還元
鉄投入管43を経て溶融還元炉21内に投入される。FIG. 3 is a smelting reduction system diagram for iron making provided with the dispensing and sealing device according to the embodiment of the present invention. In the process shown in the figure, iron ore is preliminarily reduced in a solid state using high-temperature reducing gas generated in the smelting reduction step, and then smelting reduction is performed. In the furnace, the pre-reduction furnace 31 has a structure in which iron ore having a wide particle size distribution is simultaneously pre-reduced, and coarse ore and fine ore are separately discharged. This preliminary reduction furnace
The characteristic configuration of 31 is that a dispersion plate 36 having through holes for rectifying the reducing gas is formed in a funnel shape, installed near the bottom of the furnace body, and a discharge pipe 34 is connected to the center thereof, A cyclone separator 38 is interposed in the discharge pipe 35 of the reducing gas connected to the top of the furnace 31, and the two-way discharging and sealing device A of the present invention is connected to the bottom of the cyclone separator 38. The second powder discharge pipe 9 of the apparatus A is connected to the middle part of the preliminary reduction furnace 31. Meanwhile, in the preliminary reduction furnace 31, the iron ore charged into the furnace from the supply pipe 32 has coarse particles, medium particles, and fine particles, each of which has a moving bed 37a, a bubble fluidized bed 37b, and a high-speed circulating fluid. A layer 37c is formed to contact and react with the reducing gas, and is preliminarily reduced. It is thrown.
一方、微粉粒状鉱石は前記サイクロンセパレータ38で
捕集されて粉体供給管５より容器１内に落下し、容器１
内で流動化されて塊状化が防止され、粉体（微粉粒状鉱
石）の一部は窒素ガスなどの不活性ガスに伴って第２粉
体排出管９から予備還元炉31へ循環されるとともに、残
りの粉体（微粉粒状鉱石）は第１粉体排出管４からＬバ
ルブ45および鉱石装入管44を経て溶融還元炉21内に装入
される。On the other hand, the fine ore particles are collected by the cyclone separator 38 and fall from the powder supply pipe 5 into the vessel 1.
The agglomeration is prevented by being fluidized in the inside, and a part of the powder (fine ore ore) is circulated from the second powder discharge pipe 9 to the preliminary reduction furnace 31 along with an inert gas such as nitrogen gas. The remaining powder (fine-grained ore) is charged into the smelting reduction furnace 21 from the first powder discharge pipe 4 via the L valve 45 and the ore charging pipe 44.
また、この還元工程において、容器１への粉体供給側
のサイクロンセパレータ38底部の内圧P0、容器１からの
一方の粉体払出し側である予備還元炉31の内圧P2および
他方の粉体払出し側であるＬバルブ45の内圧P1は、通
常、P2＞P0＞P1の関係になっているが、本発明の払出し
兼シール装置Ａにより圧力差が確実に保持される。ま
た、第１粉体排出管４からＬバルブ45を介して払い出さ
れる粉体の量W1は通常一定であるので、サイクロンセパ
レータ38で捕集されて粉体供給管５より容器１内に供給
される粉体の量W0が変化した場合には、分散板２上に堆
積する粉体の高さが変化することになり、この高さの変
化は前記差圧検出器10により差圧値ΔＰの変化量として
検出され、このΔＰの変化量が０になるよう調節弁７を
介し容器１内へのガスの導入量が制御される。いいかえ
れば、容器１内へ供給される粉体の量W0の変化に関連し
てガスの導入量を制御することにより、W0＝W1＋W2とな
るように第２粉体排出管９から払い出される粉体の量W2
が調整されるので、分散板２上の粉体の高さは規定値に
維持される。In this reduction step, the internal pressure P 0 at the bottom of the cyclone separator 38 on the powder supply side to the container 1, the internal pressure P 2 of the pre-reduction furnace 31 on one powder discharge side from the container 1, and the other powder pressure P 1 of the L valve 45 which is the payout side, usually has a P 2> P 0> P 1 relationship, the pressure difference by dispensing and sealing apparatus a of the present invention is securely held. Further, since the amount W 1 of the powder discharged from the first powder discharge pipe 4 via the L valve 45 is usually constant, the powder is collected by the cyclone separator 38 and supplied into the container 1 from the powder supply pipe 5. When the amount W 0 of the powder to be changed changes, the height of the powder deposited on the dispersion plate 2 changes, and the change in the height is determined by the differential pressure detector 10. The amount of change in ΔP is detected, and the amount of gas introduced into the container 1 via the control valve 7 is controlled so that the amount of change in ΔP becomes zero. In other words, the second powder discharge pipe 9 is controlled such that W 0 = W 1 + W 2 by controlling the gas introduction amount in relation to the change in the amount W 0 of the powder supplied into the container 1. Amount of powder dispensed from W 2
Is adjusted, the height of the powder on the dispersion plate 2 is maintained at a specified value.
（効果） 上記のように構成したこの発明の粉体払出し兼シール
装置によれば、下記の如き効果を奏する。(Effects) According to the powder dispensing and sealing device of the present invention configured as described above, the following effects can be obtained.
（１）粉体で排出経路をシールして供給側および二方向
の払出し側の差圧を保持しながら同時に二方向へ払い出
すことができる。(1) It is possible to pay out in two directions at the same time while holding the differential pressure between the supply side and the payout side in two directions by sealing the discharge path with the powder.
（２）粉体の供給側および二方向の払出し側での相互の
圧力干渉がない。(2) There is no mutual pressure interference between the powder supply side and the bidirectional payout side.
（３）幅広い粒度分布を有する粉体を払い出すことがで
き、粒度の大きな粉体の払い出しもスムーズで排出口が
閉塞されることがない。(3) Powder having a wide particle size distribution can be dispensed, and powder having a large particle size can be dispensed smoothly and the discharge port is not blocked.
（４）実施態様項に記載の構成によれば、粉体の一方向
への払出し量を調整することにより、分散板上の粉体の
量を常に規定値にして確実に排出経路をシールできる。(4) According to the configuration described in the embodiment, by adjusting the amount of powder to be dispensed in one direction, the amount of powder on the dispersion plate can always be set to the specified value and the discharge path can be reliably sealed. .
（５）粉体の排出を完全に連続的に行い得る。(5) Discharge of powder can be performed completely continuously.
第１図はこの発明の払出し兼シール装置の実施例を示す
断面図、第２図は第１図の分散板の一部拡大断面図、第
３図はこの発明の前記実施例の払出し兼シール装置を備
えた製鉄用の溶融還元系統図、第４図は従来の一方向払
出し装置の断面図である。 １……容器、２……分散板、2a,2b……ガス通孔、３…
…排出口、４……第１粉体排出管、５……粉体供給管、
６……ガス導入管、７……調整弁、９……第２粉体排出
管、10……差圧検出器。FIG. 1 is a sectional view showing an embodiment of the dispensing and sealing device of the present invention, FIG. 2 is a partially enlarged sectional view of the dispersing plate of FIG. 1, and FIG. FIG. 4 is a cross-sectional view of a conventional one-way dispensing device provided with a device. 1 ... container, 2 ... dispersion plate, 2a, 2b ... gas holes, 3 ...
... discharge port, 4 ... first powder discharge pipe, 5 ... powder supply pipe,
6 ... gas introduction pipe, 7 ... adjustment valve, 9 ... second powder discharge pipe, 10 ... differential pressure detector.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岸本 充晴 兵庫県神戸市中央区東川崎町３丁目１番 １号 川崎重工業株式会社神戸工場内 (72)発明者 矢島 健一 兵庫県神戸市中央区東川崎町３丁目１番 １号 川崎重工業株式会社神戸工場内 (72)発明者 竹村 良彦 兵庫県明石市川崎町１番１号 川崎重工 業株式会社明石工場内 (56)参考文献 特開 昭52−129680（ＪＰ，Ａ) 特開 昭63−54495（ＪＰ，Ａ) 特開 昭62−20806（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Mitsuharu Kishimoto 3-1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe, Hyogo Prefecture Inside the Kobe Plant of Kawasaki Heavy Industries, Ltd. (72) Inventor Kenichi Yajima Higashi-Kawasaki-cho, Chuo-ku, Kobe, Hyogo Prefecture 3-1-1, Kawasaki Heavy Industries, Ltd. Kobe Factory (72) Inventor Yoshihiko Takemura 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries, Ltd. Akashi Factory (56) References JP-A-52-129680 JP, A) JP-A-63-54495 (JP, A) JP-A-62-20806 (JP, A)
Claims (3)
を穿設した分散板を配設し、この分散板の適所に開設し
た排出口より容器底部を貫通して第１粉体排出管を下方
へ延設するとともに、容器頂部を貫通して前記分散板の
上部に粉体供給管を挿設し、容器底部付近にはガス導入
管を接続するとともに、第２粉体排出管を容器中腹部も
しくはその上方に接続し、容器底部付近より導入したガ
スにより容器内の粉体を流動化させ、前記粉体供給管の
下端部が流動層内に埋まるようにし、その粉体の一部を
前記ガスに伴って前記第２粉体排出管から排出するよう
にしたことを特徴とする粉体の二方向払出し兼シール装
置。1. A dispersing plate having a plurality of gas holes formed therein is disposed near the bottom of a cylindrical container, and the first powder is passed through the bottom of the container from a discharge port opened at an appropriate position of the dispersing plate. A body discharge pipe extends downward, a powder supply pipe is inserted through the top of the container, and a powder supply pipe is inserted above the dispersion plate. A gas introduction pipe is connected near the bottom of the container, and a second powder discharge pipe is connected. A pipe is connected to the middle part of the vessel or above, and the powder in the vessel is fluidized by gas introduced from near the bottom of the vessel, so that the lower end of the powder supply pipe is buried in the fluidized bed, Characterized in that a part of the powder is discharged from the second powder discharge pipe along with the gas.
成されている粉体の流動層上方の空塔部圧力間の差を差
圧検出器によって検出し、この差圧が一定になるように
前記ガスの導入量を調整するようにした特許請求の範囲
第１項に記載の粉体の二方向払出し兼シール装置。2. A differential pressure detector detects a difference between a pressure above the dispersion plate and a pressure in a superficial portion above a fluidized bed of powder formed on the dispersion plate. 2. The powder two-way discharging and sealing apparatus according to claim 1, wherein the amount of the gas introduced is adjusted so as to be as small as possible.
線が一致するように配置した特許請求の範囲第１項又は
第２項に記載の粉体の二方向払出し兼シール装置。3. A two-way powder discharging and sealing device according to claim 1, wherein said powder supply pipe and said first powder discharge pipe are arranged so that both axes thereof coincide with each other. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31014487A JP2632168B2 (en) | 1987-12-08 | 1987-12-08 | Two-way powder dispensing and sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31014487A JP2632168B2 (en) | 1987-12-08 | 1987-12-08 | Two-way powder dispensing and sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01151932A JPH01151932A (en) | 1989-06-14 |
| JP2632168B2 true JP2632168B2 (en) | 1997-07-23 |
Family
ID=18001697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31014487A Expired - Lifetime JP2632168B2 (en) | 1987-12-08 | 1987-12-08 | Two-way powder dispensing and sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2632168B2 (en) |
-
1987
- 1987-12-08 JP JP31014487A patent/JP2632168B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01151932A (en) | 1989-06-14 |
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