JPH0533094B2 - - Google Patents
Info
- Publication number
- JPH0533094B2 JPH0533094B2 JP61128522A JP12852286A JPH0533094B2 JP H0533094 B2 JPH0533094 B2 JP H0533094B2 JP 61128522 A JP61128522 A JP 61128522A JP 12852286 A JP12852286 A JP 12852286A JP H0533094 B2 JPH0533094 B2 JP H0533094B2
- Authority
- JP
- Japan
- Prior art keywords
- fine powder
- storage drum
- supplied
- powder
- quantitative feeder
- 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
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
本発明は、微粉体を複数個のノズルに定量的に
供給する微粉体供給方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fine powder supply method for quantitatively supplying fine powder to a plurality of nozzles.
従来の技術
たとえば、燃焼炉において乾式炉内脱硫を行な
う場合、微粉状の脱硫剤を、供給量の脈動（0.5
秒間に20％以下の変動）を生じることなく、かつ
炉壁に設けた複数個の吹込みノズルに、かたより
なく定量的に供給することが必要である。そのた
め従来は定量供給機で切り出した脱硫剤の微粉体
を、２分割を何段にも繰返して複数個のノズルに
分配する方法が採用されていた。Conventional technology For example, when performing dry in-furnace desulfurization in a combustion furnace, fine powder desulfurization agent is supplied at a pulsating rate (0.5
It is necessary to uniformly and quantitatively supply the gas to the plurality of blowing nozzles provided on the furnace wall without causing fluctuations of less than 20% per second. Therefore, conventionally, a method has been adopted in which the fine powder of desulfurizing agent cut out by a quantitative feeder is divided into two parts many times and distributed to a plurality of nozzles.
発明が解決しようとする問題点
しかしながら、上記の定量供給機から切り出し
た微粉体を、２分割を繰返して複数個のノズルに
分配するだけの方法では、脈動を上記の微少範囲
に抑えること、および容量等の異なる多数のノズ
ルにかたよりなく定量的に分配することは、いず
れも困難である。Problems to be Solved by the Invention However, with the method of simply distributing the fine powder cut out from the above-mentioned quantitative feeder to a plurality of nozzles by repeatedly dividing it into two, it is difficult to suppress the pulsation within the above-mentioned minute range; It is difficult to distribute uniformly and quantitatively to a large number of nozzles with different capacities.
本発明は、微粉体を複数個のノズルに供給する
際の、上記のごとき問題点を解決して、定量供給
機により生じる供給量の微少な脈動を吸収し、か
つ容量の異なる多数のノズルへ定量的に供給しう
る微粉体供給方法を提供しようとするものであ
る。 The present invention solves the above-mentioned problems when supplying fine powder to multiple nozzles, absorbs minute pulsations in the supply amount caused by a quantitative feeder, and supplies fine powder to multiple nozzles with different capacities. The present invention aims to provide a method for supplying fine powder that can be supplied quantitatively.
問題点を解決するための手段
上記問題点を解決するため、本発明の微粉体供
給方法は、定量供給機から供給される微粉体を複
数のエゼクタノズルを介して定量的に気送供給す
るに際し、貯留ドラムを介在させた循環管路の途
中に、定量供給機からの微粉体を混合器を介して
供給し、この微粉体を貯留ドラムと循環管路間を
循環移動させて、貯留ドラム内の微粉体を均一に
分散した一定濃度のエアロゾル状態に保持し、こ
の貯留ドラム内の微粉体を貯留ドラムの側壁に設
けた複数の排出口からそれぞれエゼクタノズルを
介して供給することを特徴とするものである。Means for Solving the Problems In order to solve the above problems, the fine powder supply method of the present invention provides a method for quantitatively pneumatically supplying fine powder supplied from a quantitative feeder through a plurality of ejector nozzles. , the fine powder from the quantitative feeder is supplied through a mixer to the middle of the circulation pipe with the storage drum interposed, and the fine powder is circulated between the storage drum and the circulation pipe, and then the fine powder is transferred to the inside of the storage drum. The fine powder in the storage drum is maintained in an aerosol state with a uniformly dispersed constant concentration, and the fine powder in the storage drum is supplied from a plurality of discharge ports provided on the side wall of the storage drum through ejector nozzles, respectively. It is something.
作 用
本発明において、定量供給機で供給される微粉
体を、循環管路を介して一旦貯留ドラムに貯留
し、しかも貯留ドラムと循環管路との間で粉流体
状で循環することにより、貯留ドラム内の微粉体
の状態を均一に分散したエアロゾル化するととも
に、定量供給機から混合器を介して循環管路に送
り込まれる微粉体の脈動を吸収して流れを均一化
し、かつ粉流体中の微粉体の濃度を一定に保持
し、さらに吹き込み用エゼクタノズルにエゼクタ
ノズルの駆動用空気（一次空気）圧を調節するこ
とにより、各エゼクタノズルの容量等に応じて微
粉体の供給量をそれぞれ脈動もなく安定して精密
に制御することができる。Function In the present invention, the fine powder supplied by the quantitative feeder is temporarily stored in the storage drum via the circulation pipe, and furthermore, by circulating the powder in the form of liquid between the storage drum and the circulation pipe, The state of the fine powder in the storage drum is uniformly dispersed into an aerosol, and the pulsation of the fine powder sent from the quantitative feeder to the circulation pipe through the mixer is absorbed to make the flow uniform, and the flow is made uniform. By keeping the concentration of fine powder constant and adjusting the driving air (primary air) pressure of the ejector nozzle to the blowing ejector nozzle, the amount of fine powder supplied can be adjusted according to the capacity of each ejector nozzle. Stable and precise control is possible with no pulsation.
実施例
本発明の一実施例を図面に基づき説明する。第
１図は本発明で用いる装置の一例を示す概略構成
図であり、燃焼炉で乾式脱硫を行なう際に、脱硫
剤微粉体を燃焼炉内へ定量的に吹き込む場合の装
置の例である。Embodiment An embodiment of the present invention will be described based on the drawings. FIG. 1 is a schematic configuration diagram showing an example of an apparatus used in the present invention, and is an example of an apparatus for quantitatively blowing desulfurizing agent fine powder into a combustion furnace when performing dry desulfurization in a combustion furnace.
図において、１は貯留ドラムで、上部に循環す
る粉流体の出口２、下部に前記循環する粉流体の
入口３および側壁の上部寄りの円周方向に粉流体
を外部へ排出する排出口４を複数個それぞれ配設
し、前記出口２と入口３間には循環ブロワ５を介
して粉流体を循環させる循環管路６を配管し、前
記貯留タンク１下部の入口３と循環ブロワ５間の
循環管路６中に混合エゼクタ（混合器）７を介在
させる。 In the figure, reference numeral 1 denotes a storage drum, which has an outlet 2 for the circulating powder fluid at the top, an inlet 3 for the circulating powder fluid at the bottom, and a discharge port 4 for discharging the powder fluid to the outside in the circumferential direction near the top of the side wall. A circulation pipe 6 for circulating powder fluid through a circulation blower 5 is installed between the outlet 2 and the inlet 3, and the circulation between the inlet 3 at the lower part of the storage tank 1 and the circulation blower 5 is provided. A mixing ejector (mixer) 7 is interposed in the pipe line 6.
前記混合エゼクタ７の二次空気（吸引空気）側
に、微粉体ｐの定量供給機８からの微粉体移送管
９を開口し、循環ブロワ５で付勢された粉流体で
引粉体ｐを吸引し、かつ混合するとともに、定量
供給機８から微粉体移送管９を通じて送られる微
粉体ｐを分散させ均一なエアロゾル状態を保たせ
る。 A fine powder transfer pipe 9 from a quantitative feeder 8 for the fine powder p is opened on the secondary air (suction air) side of the mixing ejector 7, and the powder p is drawn with the powder fluid energized by the circulation blower 5. At the same time as suction and mixing, the fine powder p sent from the quantitative feeder 8 through the fine powder transfer pipe 9 is dispersed to maintain a uniform aerosol state.
貯蓄タンク１の側壁に配設した複数個の排出口
４には、それぞれ粉流体移送管１０のの一端側を
接続し、他端側を、粉流体を燃焼炉へ送入する。
炉壁１１を貫通して炉内１２へ開口した、微粉体
送入用の複数個のエゼクタノズル１３の側面に開
口させる。前記エゼクタノズル１３の駆動用空気
（一次空気）供給管１４には、それぞれ圧力調整
弁１５を配設する。 One end of a liquid powder transfer pipe 10 is connected to each of the plurality of discharge ports 4 arranged on the side wall of the storage tank 1, and the other end is used to send the liquid powder to the combustion furnace.
A plurality of ejector nozzles 13 for feeding fine powder penetrate through the furnace wall 11 and open into the furnace interior 12. A pressure regulating valve 15 is provided in each of the drive air (primary air) supply pipes 14 of the ejector nozzle 13 .
上記のごとく配備した装置において、定量供給
機８で定量供給される微粉体ｐを大気圧以下の圧
力条件となる微粉体移送管９を経て混合エゼクタ
７内へ移送し、循環ブロワ５からの気流により吸
引し、混合分散して、粉流体として貯留ドラム１
内へ送入し、均一なエアロゾル状態を保ちつつ循
環管路６を経て循環させる。このとき粉流体中の
微粉体濃度を調整する。貯留ドラム１内の粉流体
は、複数個の排出口４から粉流体移送管１０を経
て、エゼクタノズル１３により吸入し、駆動用空
気と混合してさらに分散させ、炉内１２へ注入す
る。このとき、各エゼクタノズル１３の駆動用空
気と流量との関係をあらかじめ調査しておけば、
駆動用空気圧を圧力調整弁１５により調整し、各
エゼクタノズル１３の貯留ドラム１からの粉硫体
移送管１０の配管差による流量不均衡と容量に応
じて、微粉体の供給量を容易に、かつ精密に制御
することができる。 In the device arranged as described above, the fine powder p supplied in a fixed amount by the metering feeder 8 is transferred into the mixing ejector 7 through the fine powder transfer pipe 9 under pressure conditions below atmospheric pressure, and the airflow from the circulation blower 5 is transferred to the mixing ejector 7. suction, mixing and dispersion, and storage drum 1 as a liquid powder.
and circulated through the circulation pipe 6 while maintaining a uniform aerosol state. At this time, the fine powder concentration in the powder fluid is adjusted. The powdered fluid in the storage drum 1 is sucked in by the ejector nozzle 13 through the plurality of discharge ports 4 through the powdered fluid transfer pipe 10, mixed with driving air, further dispersed, and injected into the furnace 12. At this time, if the relationship between the driving air and the flow rate of each ejector nozzle 13 is investigated in advance,
The driving air pressure is adjusted by the pressure regulating valve 15, and the amount of fine powder supplied can be easily adjusted according to the flow rate imbalance due to the piping difference and the capacity of the powdered sulfur transfer pipe 10 from the storage drum 1 of each ejector nozzle 13. and can be precisely controlled.
発明の効果
本発明によれば、定量供給機で供給された微粉
体を一端貯留ドラムに貯留するとともに粉流体と
して循環管路を循環させることにより、貯留ドラ
ム内で微粉体を均一に分散したエアロゾル化して
一定の濃度を保持させ、定量供給機で発生する供
給微粉体の脈動を貯留ドラムで吸収して安定した
エアロゾル状態を保つことができる。したがつ
て、この貯留タンクの排出口からエゼクタノズル
に供給される微粉体は均一な流れとなつて、流量
が不均一で容量の異なる複数のエゼクタノズルで
あつても、それぞれに対応した量の前記粉流体
を、正確かつ安定して供給することができる。Effects of the Invention According to the present invention, the fine powder supplied by the quantitative feeder is stored at one end in the storage drum and circulated through the circulation pipe as a powder fluid, thereby creating an aerosol in which the fine powder is uniformly dispersed in the storage drum. It is possible to maintain a stable aerosol state by absorbing the pulsation of the supplied fine powder generated by the quantitative feeder with the storage drum. Therefore, the fine powder supplied from the discharge port of this storage tank to the ejector nozzle becomes a uniform flow, and even if the flow rate is uneven and there are multiple ejector nozzles with different capacities, the amount of fine powder supplied to each ejector nozzle is uniform. The powder fluid can be supplied accurately and stably.
第１図は本発明を適用する装置の一例を示す概
略構成図である。
１……貯留ドラム、４……排出口、５……循環
ブロワ、６……循環管路、７……混合エゼクタ
（混合器）、８……定量供給機、１０……粉流体移
送管、１１……炉壁、１３……エゼクタノズル。
FIG. 1 is a schematic configuration diagram showing an example of an apparatus to which the present invention is applied. 1...Storage drum, 4...Discharge port, 5...Circulation blower, 6...Circulation pipe line, 7...Mixing ejector (mixer), 8...Quantitative feeder, 10...Powder fluid transfer pipe, 11...furnace wall, 13...ejector nozzle.
Claims (1)
ゼクタノズルを介して定量的に気送供給するに際
し、貯留ドラムを介在させた循環管路の途中に、
定量供給機からの微粉体を混合器を介して供給
し、この微粉体を貯留ドラムと循環管路間を循環
移動させて、貯留ドラム内の微粉体を均一に分散
した一定濃度のエアロゾル状態に保持し、この貯
留ドラム内の微粉体を貯留ドラムの側壁に設けた
複数の排出口からそれぞれエゼクタノズルを介し
て供給することを特徴とする微粉体供給方法。1. When the fine powder supplied from the quantitative feeder is quantitatively pneumatically supplied through a plurality of ejector nozzles, there is a
The fine powder from the quantitative feeder is supplied through the mixer, and the fine powder is circulated between the storage drum and the circulation pipe, so that the fine powder in the storage drum is uniformly dispersed into an aerosol state with a constant concentration. 1. A method for supplying fine powder, which comprises holding the storage drum and supplying the fine powder in the storage drum from a plurality of discharge ports provided on a side wall of the storage drum through ejector nozzles, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852286A JPS62286532A (en) | 1986-06-03 | 1986-06-03 | Fine powder supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852286A JPS62286532A (en) | 1986-06-03 | 1986-06-03 | Fine powder supply method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62286532A JPS62286532A (en) | 1987-12-12 |
| JPH0533094B2 true JPH0533094B2 (en) | 1993-05-18 |
Family
ID=14986824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12852286A Granted JPS62286532A (en) | 1986-06-03 | 1986-06-03 | Fine powder supply method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62286532A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730539A (en) * | 1980-07-29 | 1982-02-18 | Daicel Chem Ind Ltd | Charging method for particulate material |
| JPS58137435U (en) * | 1982-03-05 | 1983-09-16 | 新日本製鐵株式会社 | Granule/powder feeding device |
-
1986
- 1986-06-03 JP JP12852286A patent/JPS62286532A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62286532A (en) | 1987-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |