JPH03213108A - Device and method for recovering brewery filter medium containing diatom earth - Google Patents
Device and method for recovering brewery filter medium containing diatom earthInfo
- Publication number
- JPH03213108A JPH03213108A JP2248973A JP24897390A JPH03213108A JP H03213108 A JPH03213108 A JP H03213108A JP 2248973 A JP2248973 A JP 2248973A JP 24897390 A JP24897390 A JP 24897390A JP H03213108 A JPH03213108 A JP H03213108A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- temperature
- cyclone
- filtration residue
- filtration
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000011214 refractory ceramic Substances 0.000 claims abstract description 4
- 238000005524 ceramic coating Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 94
- 239000000843 powder Substances 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 17
- 239000005909 Kieselgur Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 5
- 239000010451 perlite Substances 0.000 claims description 4
- 235000019362 perlite Nutrition 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000010455 vermiculite Substances 0.000 claims description 4
- 229910052902 vermiculite Inorganic materials 0.000 claims description 4
- 235000019354 vermiculite Nutrition 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000005068 transpiration Effects 0.000 abstract 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Cyclones (AREA)
- Filtration Of Liquid (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【発明の詳細な説明】
(技術分野)
本発明は充分に微粉砕された給送されるべき濾過残渣の
給送装置と、
給送された乾燥気体流中の濾過残渣を乾燥し分散させる
ための気体流乾燥装置と、
乾燥粉体分離のための、サイクロン装置及び固体フィル
ターから成る分Wn装置と、
処理気体流中の乾燥粉体を処理するための高温処理室と
、
処理されるべき粉体を処理気体流から分離するための高
温気体サイクロン装置と、
分離され、処理された粉体のための冷却装置とをフロー
シート中に示される順序で接続して成り、処理された粉
体を醸造所用濾過材として使用し得るようにするための
、醸造所において機械的に圧搾脱水された、所定の粒度
分布の珪藻土、有機組成分及び場合により膨張せしめら
れた。<−ライトもしくはバーミキュライトを含有する
濾過残渣を回収するための装置及びこのための方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a system for dispensing well-finely divided filtration residue and for drying and dispersing the filtration residue in a stream of dry gas to be dispensed. a gas flow drying device for dry powder separation, consisting of a cyclone device and a solid filter, a high-temperature treatment chamber for treating the dry powder in the process gas stream, and the powder to be treated. a high-temperature gas cyclone device for separating the powder from the process gas stream and a cooling device for the separated and treated powder, connected in the order shown in the flow sheet to separate the treated powder. Diatomaceous earth of a defined particle size distribution, mechanically dehydrated in the brewery, organic composition and optionally expanded, in order to be usable as a brewery filter material. <-A device for recovering filtration residue containing light or vermiculite and a method therefor.
本発明において珪藻土と称されるのは、濾過材乃至濾過
媒体として使用され得る鉱物性素材(Rδmpps C
hemie−Lexikon (1973) 1770
頁参照)である。醸造所で排出される泥状の濾過残渣は
、珪藻土のほかに他の濾過材も含有する。例えば膨張せ
しめられたパーライト或はノ(−ミキュライトなどであ
る。濾過残渣は、当然のことながら、さら番こ濾過に際
して分離された物質、ことに何機質を含有する。パーラ
イト、バーミキュライトの量は一般的に数重量%程度の
少量である。この種の濾過材においては、機械的な理由
から著しく小さ一1粒度に対する配慮がある。接触法で
珪藻土と共に使用されるシリカゲルも濾過残渣中に含ま
れる。そこで、濾過により生ずる残渣はその組成にお〜
)て醸造所ごとに相違する。それぞれの醸造所の操業プ
ラクチスにより濾過が行われるので、濾過残液は珪藻土
を主成分として含有するが、経験的に相違する。これを
分散させて、濾過残渣を「分析」し組成まで理解される
。In the present invention, diatomaceous earth is a mineral material (Rδmpps C
hemie-Lexikon (1973) 1770
(see page). The muddy filtration residue discharged from breweries contains diatomaceous earth as well as other filter media. For example, expanded perlite or miculite. The filtration residue naturally contains substances separated during the filtration, especially organic matter. The amount of perlite and vermiculite Generally, the amount is small, on the order of several percent by weight.In this type of filtration medium, consideration must be given to extremely small particle size for mechanical reasons.Silica gel, which is used together with diatomaceous earth in the contact method, is also included in the filtration residue. Therefore, the residue produced by filtration has a composition of ~
) and differ from brewery to brewery. Since filtration is performed according to the operating practices of each brewery, the filtration residue contains diatomaceous earth as a main component, but experience has shown that these differ. By dispersing this and ``analyzing'' the filtration residue, we can understand its composition.
(従来技術)
本発明の双礎をなす公知装置(Brauwelts 1
988年刊、2332−2347頁)は、濾過残渣を問
題の生じないように浄化するためのものである。珪藻土
を含有する醸造所用濾過材の回収は、上記公知装置にお
いては操業安定性をもって行うのは困難である。この公
知の再生処理では、珪藻土に含有される非結晶性珪酸か
ら結晶性珪酸への好ましくない転化が生ずる。さらにこ
の公知装置では操業安定性の改善が必要である。すなわ
ち粉体の凝集と乾燥気体のυF出が行われるべきフィル
ター装置における沈澱をもたらす。ことにこの障害は、
濾過残渣が種々の異なる材料残渣を含有する場合にはな
はだしい。この公知装置はエネルギー消費量が多く、環
境に悪影響を及ぼさないように使用気体の周到な浄化を
必要とする。(Prior art) A known device (Brauwelts 1) that forms the cornerstone of the present invention
988, pp. 2332-2347) is for purifying filtration residues so that they do not cause problems. It is difficult to recover brewery filter media containing diatomaceous earth with operational stability using the above-mentioned known apparatus. This known regeneration process results in an undesired conversion of the amorphous silicic acid contained in the diatomaceous earth to crystalline silicic acid. Furthermore, the operational stability of this known device needs to be improved. That is, agglomeration of the powder and υF discharge of the dry gas lead to precipitation in the filter device in which it is to be carried out. In particular, this disorder
This is especially true when the filter residue contains residues of various different materials. This known device consumes a lot of energy and requires careful purification of the gas used so as not to have a negative impact on the environment.
そこで本発明により解決されるべきこの分野の技術的課
題は、冒頭の(技術分野)の項に述べた基本的構成を有
する装置において、珪藻土から成る醸造所用濾過材を効
率的に回収することができ、粉体粒子構成に関しても有
害な、珪藻土の好ましくない変化をもたらすことのない
回収装置を提供することである。Therefore, the technical problem in this field to be solved by the present invention is that it is possible to efficiently recover a brewery filter material made of diatomaceous earth using an apparatus having the basic configuration described in the opening section (Technical Field). It is an object of the present invention to provide a recovery device that can be used to collect diatomaceous earth and that does not cause any harmful or undesirable changes in diatomaceous earth in terms of powder particle composition.
(発明の要約)
しかるに上述した技術的課題は横断面図形の堅型反応室
(10)、その下方に同心的に設けられた処理気体導入
用の渦流発生装置(11)及び上記反応室(10)の上
方に同心的に設けられ、これに突入している乾燥流体導
入用パイプ(12)を有する高温処理室(7)が渦流反
応器として構成され、上記高温処理室(7)に処理気体
流発生装置(13)が接続されており、これが燃焼室(
14)、液体杖及び/或は気体状燃料給送装置(15)
、圧搾空気給送用装置(16)及び外気給送用i置(1
7)を具備し、発生せしめられ・た処理気体流が有機組
成分を燃焼させるに充分な温度及び充分な酸素と、充分
な流動エネルギーとを有し、
約80%の固体分を分離するための、耐火性セラミック
コーティング(18)を施した高温気体サイクロン装置
(8)に、分離された固体分のための急冷装置t(19
)が接′統され、これが上記サイクロン装置と冷却装置
(9)との間に配置され、高温気体サイクロン装置(8
)の高温気体排出口が給送導管系(20)を経て気体流
乾燥装置(3)に接続され、
高温気体サイクロン装置(8)から排出される、約20
%の固体分を含有する高温気体が、気体流乾燥装置(3
)における乾燥空気流として使用され得るようになされ
ており、
給送用導管系(20)に調節装置(21)と協働して作
用する噴射水冷却袋fi(22)が設けられ、これによ
り濾過残渣中に混入帯同されている組成分が気体流乾燥
装置(3)中において蒸散することを阻止するため、乾
燥気体流の温度を比較的低い導入温度に調節し得るよう
になされていることを特徴とする、濾過残渣回収装置に
より解決され得ることが本発明者らにより見出された。(Summary of the Invention) However, the above-mentioned technical problem is solved by a rigid reaction chamber (10) having a cross-sectional shape, a vortex generation device (11) for introducing a processing gas concentrically provided below it, and the reaction chamber (10). ) A high-temperature treatment chamber (7) is configured as a vortex reactor, and has a drying fluid introduction pipe (12) protruding into the high-temperature treatment chamber (7). A flow generator (13) is connected to the combustion chamber (
14), liquid cane and/or gaseous fuel delivery device (15)
, compressed air supply device (16) and outside air supply device (1)
7), in which the generated process gas stream has sufficient temperature, sufficient oxygen and sufficient flow energy to burn out the organic components, and to separate approximately 80% solids; A high-temperature gas cyclone device (8) with a refractory ceramic coating (18) is equipped with a quenching device t (19) for the separated solids.
) is connected between the cyclone device and the cooling device (9), and is connected to the high temperature gas cyclone device (8).
) is connected to the gas stream drying device (3) via a feed conduit system (20) and discharged from the hot gas cyclone device (8), approximately 20
A high temperature gas containing a solids content of
), the feed conduit system (20) is provided with an injection water cooling bag fi (22) acting in cooperation with the regulating device (21), thereby In order to prevent components entrained in the filtration residue from transpiring in the gas flow drying device (3), the temperature of the drying gas stream can be adjusted to a relatively low introduction temperature. The present inventors have discovered that the problem can be solved by a filtration residue recovery device characterized by the following.
本発明は口頭に述べたような、珪藻土含有醸造所用濾過
材を濾過残渣から回収するためのVj置が、基本的に、
濾過残渣中の有機成分が事実上安全に高温処理室に到達
し、ここでできる限り安全に燃焼せしめられるように構
成されるべきであるとの認識から出発している。さらに
また本発明は、固体フィルターにおける沈澱をもたらし
、排出されるべき売気のための高コストの別途の浄化設
備を設けることのないようにするためには、気体流乾燥
装置内において、濾過残渣中の有機成分を蒸散させては
ならないとの認識に基づく。他方において、種々の有機
成分を含有する濾過残渣を処理する場合には、従ってそ
の燃焼により高温処理室乃至高温ガスサイクロンから排
出される処理気体(煙道ガス)も種々であって、しかも
高温である。しかしながら本発明によれば噴霧水冷却に
より乾燥気体流の温度は著しく短時間で適当温度に調節
され得るので、上記処理気体はエネルギーを大量に消費
することなく気体流乾燥装置内に導入され、しかも高温
のために有機成分の気体流乾燥装置内におけるH散も生
じない。本発明装置においては、乾燥気体流に帯同され
る固体分は凝集固塊化することがな(、また簡単に粉砕
され得る。高温処理室における乾燥粉体の平均滞留時間
は極めて短い。これは非結品性珪酸から結晶性珪酸への
転化が行われないように設定される。高温ガスサイクロ
ンから排出される、処理された粉体の急冷は、この転化
を阻止する。乾燥粉体は高温処理室における処理の際に
場合により溶岩のような流動挙動を示すことがあるが急
冷により処理された粉体は高温気体サイクロンを離脱す
ると直ちに慣用の装置により搬送され、取扱われること
ができる。上述した種々の対策の結合により、粉体構成
に関しても、好ましくない珪藻土の変化をもたらすこと
なく、珪藻土を主成分として含有する醸造所用綿過材を
、醸造所において生ずる、機械的に圧搾脱水された泥状
濾過残渣から安定的に回収することが可能になされた。The present invention basically comprises a Vj arrangement for recovering diatomaceous earth-containing brewery filtration media from filtration residue, as described orally.
The starting point is the recognition that the structure should be such that the organic components in the filter residue can reach the high temperature treatment chamber virtually safely and be burned there as safely as possible. Furthermore, the present invention provides that the filtration residue is removed in a gas stream dryer in order to avoid the need for costly separate purification equipment for the waste air which leads to sedimentation in the solid filter and which has to be discharged. It is based on the recognition that the organic components inside must not be evaporated. On the other hand, when processing filter residues containing various organic components, the processing gas (flue gas) discharged from the high-temperature processing chamber or high-temperature gas cyclone due to combustion is also various, and moreover, be. However, according to the invention, the temperature of the drying gas stream can be adjusted to the appropriate temperature by spray water cooling in a very short time, so that the treatment gas can be introduced into the gas stream drying device without consuming large amounts of energy. Due to the high temperature, H dispersion of organic components in the gas flow drying device does not occur. In the apparatus of the present invention, the solids entrained in the dry gas stream do not aggregate into agglomerates (and can be easily crushed).The average residence time of the dry powder in the high-temperature treatment chamber is extremely short. It is set such that no conversion of non-setting silicic acid to crystalline silicic acid takes place. The rapid cooling of the treated powder leaving the hot gas cyclone prevents this conversion. The powder treated by quenching, which may sometimes exhibit lava-like flow behavior during processing in the processing chamber, can be transported and handled by conventional equipment as soon as it leaves the hot gas cyclone. Through the combination of various measures taken in the powder composition, we have been able to improve the powder composition without causing any unfavorable changes in diatomaceous earth. Stable recovery from muddy filtration residue has been made possible.
本発明装置は極めて少ないエネルギー消費で操業し得る
。The device according to the invention can be operated with extremely low energy consumption.
本発明装置の構成、配置については細部にわたり本発明
の範囲において改変可能である。本発明の好ましい実施
態様は、濾過残渣中のを機成分が極めて完全に燃焼され
得ることを特徴とし、高温処理室は縦断面電球状の反応
室、ならびにこれより横断面小径の渦流発生装置及び気
体排出口を有することを特徴とする。高温処理室は、そ
の入口温度約600℃より高い処理気体で操作され得る
。The configuration and arrangement of the device of the present invention can be modified in detail within the scope of the present invention. A preferred embodiment of the invention is characterized in that the organic components in the filtration residue can be burnt very completely, and the high-temperature treatment chamber is comprised of a reaction chamber with a bulb-shaped longitudinal section and a vortex generator with a small diameter cross section and a It is characterized by having a gas outlet. The high temperature processing chamber may be operated with a processing gas whose inlet temperature is greater than about 600°C.
高温気体サイクロンは、水で冷却される勾配路乃至螺旋
路で構成される急冷装置を具備することが好ましい。被
処理粉体は、高温気体サイクロンにおける極めて短い滞
留時間で排出されるが、このときの温度は約800℃で
あり、これは550℃或はそれ以下に冷却される。噴射
水冷却装置は、極めて敏感で迅速に制御される、乾燥気
体流の温度を制御する回路を有するのが好ましい。さら
に気体流乾燥装置は、サイクロン装置より上流に衝突方
向変換装置を具備し、ここで凝集塊体が衝突により粉砕
されるようにするのが好ましい。The high-temperature gas cyclone is preferably equipped with a quenching device composed of a gradient path or a spiral path cooled by water. The powder to be treated is discharged with a very short residence time in a high temperature gas cyclone, at a temperature of approximately 800°C, which is then cooled to 550°C or lower. Preferably, the jet water cooling device has a very sensitive and quickly controlled circuit for controlling the temperature of the drying gas stream. Further, it is preferable that the gas flow drying device is provided with an impact direction changing device upstream of the cyclone device, so that the agglomerates are crushed by impact here.
本発明装置は広い範囲で制御され調節され得るので、あ
らゆる条件に対応して、例えば濾過残渣が著しく多種多
様の材料、組成を存する場合にも、これを出発材料とし
て、醸造所用鑓過材を回収することができる。本発明方
法の好ましい実施態様は、これに関連して、例えば各種
醸造装置乃至醸造所から排出される各種材料の濾過残渣
を装填する際に、この混合残渣を混合により装置に典型
的な組成に標準化し、次いでこれを気体流乾燥装置に給
送することを特徴とする。Since the device according to the invention can be controlled and adjusted over a wide range, it can be used as a starting material to produce filtration materials for breweries in response to all conditions, for example, even when the filtration residue has an extremely wide variety of materials and compositions. It can be recovered. In this connection, a preferred embodiment of the method according to the invention provides, for example, when loading filter residues of various materials discharged from various brewing apparatuses or breweries, this mixed residue is brought to a composition typical of the apparatus by mixing. It is characterized in that it is standardized and then fed into a gas flow dryer.
本発明装置実施例を添付図面を参照しつつ以下に説明す
る。Embodiments of the present invention will be described below with reference to the accompanying drawings.
第1図に示される装置が、醸造所において発生する機械
的圧搾濾過残渣(しぼりかす)から醸造所用錦過材とし
ての珪藻土を回収するためのものである。この濾過残渣
は、所定粒度分布の珪藻土、濾過により分離された組成
分及び場合により膨張させたパーライト或はバーミキュ
ライトもしくはンリ力ゲルから成る。本装置は基本的な
構成として、まず給送されるべき濾過残渣の給送装置I
を有する。これは第1図左端に示されている。The apparatus shown in FIG. 1 is for recovering diatomaceous earth as a filtration material for breweries from mechanical press filtration residues generated in breweries. The filter residue consists of diatomaceous earth with a defined particle size distribution, the components separated by filtration and optionally expanded perlite or vermiculite or gel. The basic configuration of this device is as follows: First, a feeding device I for the filtration residue to be fed.
has. This is shown at the left end of FIG.
給送スクリュー2或はその他の給送手段により給送され
るべき濾過残渣が充分に微粉砕されて気体流乾燥装置3
に導入されるように構成される。これは下方から上方に
向って流動する乾燥気体流により処理されこの気体流速
度は、微粉砕された濾過残渣を帯同し得るように充分な
高速度とする。The filtration residue to be fed by the feeding screw 2 or other feeding means is sufficiently pulverized and transferred to the gas flow drying device 3.
configured to be introduced in This is treated with a flow of dry gas flowing from bottom to top, the gas flow velocity being high enough to entrain the finely divided filter residue.
本装置の基本的構成として、さらにサイ−クロン4と固
体フィルター5が設けられる。この両者が合体して乾燥
粉体分離装置4,5を構成する。乾燥用気体流は次いで
洗気として、熱交換器6に導入され、ここで装置中に導
入される外気を加熱する作用を果たし、しかるべき浄化
処理後に雰囲気中に排出される。The basic configuration of this device further includes a cyclone 4 and a solid filter 5. Both of them are combined to constitute dry powder separation devices 4 and 5. The drying gas stream is then introduced as scrubbing air into the heat exchanger 6, where it serves to heat the outside air introduced into the device and, after appropriate purification treatment, is discharged into the atmosphere.
本発明装置における特に重要な点は、処理気体流中に含
まれる乾燥粉体処理のための高温処理室7に在る。高温
気体サイクロン装置8が処理された粉体を処理気体から
分離するために設けられている。次いで、さらに分離さ
れた被処理された粉体の冷却装置9が設けられている。Of particular importance in the device according to the invention is the high temperature treatment chamber 7 for the treatment of dry powder contained in the treatment gas stream. A hot gas cyclone device 8 is provided to separate the treated powder from the treatment gas. Next, a cooling device 9 for the separated processed powder is provided.
上記各装置は、本発明方法を実施する処理の順番に応じ
てフローシートに矢印で示された順序に配置される。The above-mentioned devices are arranged in the order indicated by arrows on the flow sheet, depending on the order of processing for carrying out the method of the present invention.
なおこのフローシートには本発明において重要な温度も
しくは温度範囲に書込まれている。フローシートはそれ
以上の詳細な記述を含まない。処理された粉体はもちろ
ん醸造所用濾過材として再使用される。Note that this flow sheet describes temperatures or temperature ranges that are important in the present invention. Flowsheets do not contain further detailed descriptions. The treated powder can of course be reused as filter media for breweries.
第1から3図を対比観察して理解されるように、過流反
応器としての高温処理室7には、断面図形の堅型反応室
10が形成され、その下方には同心的に配置された処理
気体流導入用渦流発生装置11が設けられ、反応室10
の上方には同心的に配置され、これに突入する乾燥粉体
導入用パイプ12が設けられている。高温処理室7の上
流には処理気体流発生装置13が接続されている。この
処理気体流発生装置13、燃焼室14、液体及び/或は
気体燃料導入用管15、圧縮空気導入用管16及び外気
導入用管17を備えている。処理気体流発生装置13は
、有機組成分燃焼のために充分な温度と酸素含有分を有
する、充分な流速の処理気体流を高温処理室7内に給送
し得るように構成される。高温気体サイクロン装置8に
は、耐火性セラミックから成るライニング18が施され
る。約80%の9固体含有分残渣がここで処理される。As can be understood by comparing and observing Figures 1 to 3, a rigid reaction chamber 10 with a cross-sectional shape is formed in the high-temperature treatment chamber 7 as a perflow reactor, and a rigid reaction chamber 10 with a cross-sectional shape is formed below it. A vortex generating device 11 for introducing a treatment gas flow is provided, and the reaction chamber 10 is
A dry powder introduction pipe 12 is provided concentrically above and protrudes into the pipe. A processing gas flow generator 13 is connected upstream of the high temperature processing chamber 7 . The processing gas flow generating device 13, a combustion chamber 14, a pipe 15 for introducing liquid and/or gaseous fuel, a pipe 16 for introducing compressed air, and a pipe 17 for introducing outside air are provided. Process gas stream generator 13 is configured to deliver a process gas stream of sufficient flow rate into high temperature process chamber 7 with sufficient temperature and oxygen content for organic component combustion. The hot gas cyclone device 8 is provided with a lining 18 made of refractory ceramic. A 9 solids content residue of approximately 80% is processed here.
この高温気体サイクロン装置には分離された固体分急冷
装置19が接続されている。すなわち、この急冷装置は
サイクロン装置8と前述した冷却装置9との間に配置さ
れる。高温気体サイクロン装置8の高温気体排出口は、
給送導管系20を経て気体流乾燥装置3に接続される。A separate solids quenching device 19 is connected to this high temperature gas cyclone device. That is, this quenching device is arranged between the cyclone device 8 and the cooling device 9 described above. The high temperature gas outlet of the high temperature gas cyclone device 8 is
It is connected to the gas flow drying device 3 via a feed line system 20 .
サイクロン装置8からの高温ガスは約20%の固体分を
含有しており、乾燥気体流として気体流乾燥袋r113
に循環給送されてもよい。ただし、他の処理方法も可能
である。給送導管系20には調節2i置21で作動され
る。水噴射冷却装置22が設けられ、濾過残渣に混入帯
同されている打機組成分が気体流乾燥装置13内で気体
化するのを阻止するため、乾燥気体流の温度を比較的低
い導入気体温度に調節することができる。The hot gas from the cyclone device 8 contains approximately 20% solids and is supplied as a dry gas stream to a gas stream drying bag r113.
It may also be fed in circulation. However, other processing methods are also possible. The feed line system 20 is operated with a control 2i position 21. A water jet cooling device 22 is provided to reduce the temperature of the drying gas stream to a relatively low introduced gas temperature in order to prevent the batter components mixed and entrained in the filtration residue from gasifying in the gas stream drying device 13. Can be adjusted.
第2及び3図から認められるように、高温処理室7は縦
断面電球状の反応室10ならびにこれに比し小径の渦流
発生装置11及び気体排出口23を有する。高温処理室
7はフローシート中に記入された温度に調節される。処
理気体流は、約600℃以上、それぞれの場合の燃焼さ
れるべきを機紐成分の発火点以上の温度で高温処理室7
内に導入される。本発明の好ましい実施例では、高温処
理室7は減圧下になされ、かつ第1図に示されるように
円錐台状に構成され得る。As can be seen from FIGS. 2 and 3, the high-temperature treatment chamber 7 has a reaction chamber 10 having a bulb-shaped longitudinal section, a vortex generator 11 and a gas outlet 23 having a smaller diameter than the reaction chamber 10. The high temperature treatment chamber 7 is adjusted to the temperature specified in the flow sheet. The process gas stream is placed in a high temperature process chamber 7 at a temperature above about 600°C, above the ignition point of the machine string components to be combusted in each case.
be introduced within. In a preferred embodiment of the invention, the high temperature treatment chamber 7 is under reduced pressure and may be configured in the form of a truncated cone, as shown in FIG.
すでに言及したように、急冷装置19は水で冷却される
勾配路乃至螺旋路で構成される。噴射水冷却装置22は
、乾燥気体流温度の制御回路に属する。気体流乾燥装置
の上方部分において、サイクロン装置4の前(下流側)
に衝突方向変換装置24を設けることができここで衝撃
粉砕により凝集塊が粉砕される。ここで乾燥気体流体か
ら離脱落下する粉体は図示された導管25を通って濾過
残渣給送装置1に返還される。サイクロン装置4で分離
された乾燥粉体ならびにフィルター5で分離された乾燥
粉体は第1図に示される搬送装置26により高温処理室
7に給送される。一部分は給送装置1に返還されること
もできる。As already mentioned, the quenching device 19 consists of a water-cooled slope or spiral path. The injection water cooling device 22 belongs to the control circuit for the dry gas stream temperature. In the upper part of the gas flow drying device, in front of the cyclone device 4 (downstream side)
An impact deflection device 24 can be provided in which the agglomerates are broken up by impact comminution. The powder that separates from the drying gaseous fluid and falls therethrough is returned to the filter residue feed device 1 through the illustrated conduit 25. The dry powder separated by the cyclone device 4 and the dry powder separated by the filter 5 are fed to the high temperature processing chamber 7 by a conveying device 26 shown in FIG. A portion can also be returned to the feeding device 1.
渦流発生装置とも称される高温処理室7上方には、多少
とも切線方向において気体流がこの処理室中へ流入し得
るようにした装置(図示せず)を設けるのが好ましい。Preferably, a device (not shown) is provided above the high-temperature treatment chamber 7, also referred to as a vortex generator, which allows a gas flow to enter the treatment chamber more or less in the tangential direction.
これにより高温処理室7の壁面を浄化し、操作の確実性
が高められる。高温気体サイクロン壁には、同じく図示
されていない邪魔板を設けることができる。これはまた
、渦流に対応し或は振動を制御するようにサイクロン8
の中心軸線に設け、この邪魔板は充分な粉体を乾燥気体
流と共に気体流乾燥装置3に給送することを保証する。This purifies the wall surface of the high temperature processing chamber 7 and improves the reliability of operation. The hot gas cyclone wall can be provided with baffles, also not shown. This also includes cyclones 8 to accommodate vortices or control vibrations.
This baffle plate ensures that sufficient powder is delivered to the gas flow drying device 3 together with the drying gas flow.
また高温気体サイクロン8内の円滑な流動、ならびにこ
れと共に迅速な一次冷却が必要である。Furthermore, smooth flow within the hot gas cyclone 8 and rapid primary cooling are also required.
第1図はフローシートで示す本発明装置の略図、
第2図は第1図におけるA部分、高温処理室の拡大尺断
面図、
第3図は第2図のB−B線における断面図である。
本発明装置の主要部分と符号との対応関係は以下の通り
である。
1・・・線通残渣給送装置、2・・・給送スクリュー3
・・・気体流乾燥装置、4・・・サイクロン、5・・・
固体フィルター 6・・・熱交換器、7・・・高温処理
室、8・・・高温気体サイクロン、9・・・(粉体)冷
却装置、10・・・反応室、11・・・渦流発生装置、
12・・・(乾燥粉体導入用)パイプ、13・・・処理
気体流発生装置、14・・・燃焼室、15・・・燃料導
入用管、16・・・圧縮空気導入用管、17・・・外気
導入用管、18・・・セラミックライニング、19・・
・固体分急冷装置、20・・・給送導管系、21・・・
調節装置、22・・・水噴射冷却装置、23・・・気体
排出口、24・・・衝突方向変換装置Figure 1 is a schematic diagram of the apparatus of the present invention shown in a flow sheet; Figure 2 is an enlarged cross-sectional view of the high-temperature treatment chamber at section A in Figure 1; Figure 3 is a cross-sectional view taken along line B-B in Figure 2; be. The correspondence between the main parts of the device of the present invention and the symbols is as follows. 1... Line residue feeding device, 2... Feeding screw 3
...Gas flow drying device, 4...Cyclone, 5...
Solid filter 6... Heat exchanger, 7... High temperature treatment chamber, 8... High temperature gas cyclone, 9... (Powder) cooling device, 10... Reaction chamber, 11... Vortex generation Device,
12... Pipe (for dry powder introduction), 13... Processing gas flow generator, 14... Combustion chamber, 15... Fuel introduction pipe, 16... Compressed air introduction pipe, 17 ...Outside air introduction pipe, 18...Ceramic lining, 19...
・Solid content quenching device, 20...Feeding conduit system, 21...
Adjustment device, 22... Water injection cooling device, 23... Gas discharge port, 24... Collision direction changing device
Claims (7)
送装置と、 給送された乾燥気体流中の濾過残渣を乾燥し分散させる
ための気体流乾燥装置と、 乾燥粉体分離のための、サイクロン装置及び固体フィル
ターから成る分離装置と、 処理気体流中の乾燥粉体を処理するための高温処理室と
、 処理されるべき粉体を処理気体流から分離するための高
温気体サイクロン装置と、 分離され、処理された粉体のための冷却装置とをフロー
シート中に示される順序で接続して成り、処理された粉
体を醸造所用濾過材として使用し得るようにするための
、醸造所において機械的に圧搾脱水された、所定粒度分
布の珪藻土、有機組成分及び場合により膨張せしめられ
たパーライトもしくはバーミキュライトを含有する濾過
残渣を回収するための装置であって、 横断面図形の堅型反応室(10)、その下方に同心的に
設けられた処理気体導入用の渦流発生装置(11)及び
上記反応室(10)の上方に同心的に設けられ、これに
突入している乾燥流体導入用パイプ(12)を有する高
温処理室(7)が渦流反応器として構成され、 上記高温処理室(7)に処理気体流発生装置(13)が
接続されており、これが燃焼室(14)、液体状及び/
或は気体状燃料給送装置(15)、圧搾空気給送用装置
(16)及び外気給送用装置(17)を具備し、発生せ
しめられた処理気体流が有機組成分を燃焼させるに充分
な温度及び充分な酸素と、充分な流動エネルギーとを有
し、 約80%の固体分を分離するための、耐火性セラミック
コーティング(18)を施した高温気体サイクロン装置
(8)に、分離された固体分のための急冷装置(19)
が接続され、これが上記サイクロン装置と冷却装置(9
)との間に配置され、高温気体サイクロン装置(8)の
高温気体排出口が給送導管系(20)を経て気体流乾燥
装置(3)に接続され、 高温気体サイクロン装置(8)から排出される、約20
%の固体分を含有する高温気体が、気体流乾燥装置(3
)における乾燥空気流として使用され得るようになされ
ており、 給送用導管系(20)に調節装置(21)と協働して作
用する噴射水冷却装置(22)が設けられ、これにより
濾過残渣中に混入帯同されている組成分が気体流乾燥装
置(3)中において蒸散することを阻止するため、乾燥
気体流の温度を比較的低い導入温度に調節し得るように
なされていることを特徴とする、濾過残渣回収装置。(1) A feeding device for sufficiently finely ground filter residue to be fed, a gas flow drying device for drying and dispersing the filter residue in the fed dry gas stream, and dry powder separation. a separation device consisting of a cyclone device and a solid filter for; a high-temperature treatment chamber for treating the dry powder in the process gas stream; and a high-temperature gas for separating the powder to be treated from the process gas stream. a cyclone device and a cooling device for the separated and treated powder, connected in the order indicated in the flow sheet, in order to enable the treated powder to be used as a brewery filter medium; A device for recovering a filter residue containing diatomaceous earth of a defined particle size distribution, an organic composition and optionally expanded perlite or vermiculite, which has been mechanically compressed and dewatered in a brewery, having a cross-sectional shape of A solid reaction chamber (10), a vortex generator (11) for introducing process gas concentrically provided below the reaction chamber (10), and a vortex generator (11) provided concentrically above the reaction chamber (10) and extending into the reaction chamber (10). A high-temperature treatment chamber (7) having a drying fluid introduction pipe (12) is configured as a vortex reactor, and a treatment gas flow generator (13) is connected to the high-temperature treatment chamber (7), which is connected to the combustion chamber. (14), liquid and/or
Alternatively, a gaseous fuel supply device (15), a compressed air supply device (16) and a fresh air supply device (17) are provided, so that the process gas flow generated is sufficient to combust the organic components. The gas is separated into a high-temperature gas cyclone device (8) with a refractory ceramic coating (18), having a suitable temperature and sufficient oxygen and sufficient flow energy to separate approximately 80% solids. Quenching device for solids (19)
is connected to the cyclone device and the cooling device (9).
), the hot gas outlet of the hot gas cyclone device (8) is connected to the gas flow drying device (3) via the feed conduit system (20), and the hot gas outlet from the hot gas cyclone device (8) is connected to the gas flow drying device (3). Approximately 20
A high temperature gas containing a solids content of
), and the feed conduit system (20) is provided with a jet water cooling device (22) acting in cooperation with a regulating device (21), by means of which the filtration In order to prevent the components entrained in the residue from evaporating in the gas flow drying device (3), it is possible to adjust the temperature of the drying gas flow to a relatively low introduction temperature. Features: Filtration residue recovery device.
上記高温処理室(7)が、縦断面電球形状の反応室(1
0)ならびにこれより小径の断面を有する渦流発生装置
(11)及び気体排出口(23)を有することを特徴と
する装置。(2) A filtration residue recovery device according to claim (1),
The high temperature treatment chamber (7) is a reaction chamber (1) having a light bulb shape in vertical section.
0) and a vortex generator (11) and a gas outlet (23) having a cross section with a smaller diameter than this.
であって、高温処理室(7)が約600℃の温度の処理
気体が操作され得るようになされていることを特徴とす
る装置。(3) The filtration residue recovery device according to claim (1) or (2), characterized in that the high temperature treatment chamber (7) is configured such that a treatment gas at a temperature of about 600°C can be operated. device to do.
渣回収装置であって、高温ガスサイクロン装置(8)が
水で冷却される急冷装置(19)を具備することを特徴
とする装置。(4) A filtration residue recovery device according to any one of claims (1) to (3), characterized in that the high temperature gas cyclone device (8) is equipped with a quenching device (19) that is cooled with water. Device.
渣回収装置であって、給送用導管系(20)に接続され
た噴射水冷却装置(22)が、乾燥気体流温度の制御回
路を具備することを特徴とする装置。(5) A filtration residue recovery device according to any one of claims (1) to (4), wherein the jet water cooling device (22) connected to the feeding conduit system (20) has a temperature of the dry gas stream. A device characterized by comprising a control circuit.
渣回収装置であって、気体流乾燥装置(3)が、サイク
ロン装置(4)の上流に配置された、凝集体破砕用の衝
突方向交換装置(24)を具備することを特徴とする装
置。(6) A filtration residue recovery device according to any one of claims (1) to (5), wherein the gas flow drying device (3) is arranged upstream of the cyclone device (4), and is configured to crush aggregates. A device characterized in that it comprises a collision direction change device (24).
渣回収装置を操作する方法であって、例えば各種醸造装
置乃至醸造所から排出される各種材料の濾過残渣を装填
する際に、この濾過残渣を混合により装置に典型的な組
成に標準化し、しかる後に気体流乾燥装置に給送するこ
とを特徴とする方法。(7) A method of operating a filtration residue recovery device according to any one of claims (1) to (6), which includes, for example, when loading filtration residues of various materials discharged from various brewing devices or breweries. A method characterized in that the filter residue is standardized by mixing to a composition typical of the device and then fed to a gas flow drying device.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3931352 | 1989-09-20 | ||
DE3931352.2 | 1989-09-20 | ||
DE3935952.2 | 1989-10-27 | ||
DE19893935952 DE3935952A1 (en) | 1989-09-20 | 1989-10-27 | Treating kieselguhr slurry for filter use |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03213108A true JPH03213108A (en) | 1991-09-18 |
JPH0638888B2 JPH0638888B2 (en) | 1994-05-25 |
Family
ID=25885336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2248973A Expired - Lifetime JPH0638888B2 (en) | 1989-09-20 | 1990-09-20 | Device for collecting diatomaceous earth filter material for brewery and method therefor |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH0638888B2 (en) |
AU (1) | AU623551B2 (en) |
BR (1) | BR9004665A (en) |
CS (1) | CS455890A3 (en) |
DE (1) | DE3935952A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010131500A (en) * | 2008-12-03 | 2010-06-17 | Sumitomo Heavy Ind Ltd | Sludge treatment method and sludge treatment apparatus |
JP2018505041A (en) * | 2014-12-19 | 2018-02-22 | イーピー ミネラルス,エルエルシー | Opal biogenic silica / expanded perlite composite products |
JP2018529332A (en) * | 2015-09-02 | 2018-10-11 | イーピー ミネラルス,エルエルシー | Regenerated media useful for processing fermentation liquids |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10323774A1 (en) * | 2003-05-26 | 2004-12-16 | Khd Humboldt Wedag Ag | Process and plant for the thermal drying of a wet ground cement raw meal |
EP1491253A1 (en) * | 2003-06-26 | 2004-12-29 | Urea Casale S.A. | Fluid bed granulation process and apparatus |
DE102013010634A1 (en) | 2012-06-18 | 2013-12-19 | Cera System Verschleissschutz Gmbh | Separation device such as pipe edge filter for separating solid material e.g. coarse particle from suspension, used in hydraulic plant, has ceramic plates that are surrounded by pipe and are provided with smooth surface |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3351030A (en) * | 1966-05-18 | 1967-11-07 | Dorr Oliver Inc | Treatment and incineration of waste sludges |
US3677404A (en) * | 1970-11-25 | 1972-07-18 | Procedyne Corp | Moving bed filtration method |
DE2519669C3 (en) * | 1975-02-15 | 1986-07-31 | Bergwerksverband Gmbh, 4300 Essen | Use of a fluidized bed reactor for the thermal regeneration of loaded adsorbents |
IT1150650B (en) * | 1982-03-10 | 1986-12-17 | Montedison Spa | FLUID BED REACTOR |
DE3725512A1 (en) * | 1987-07-29 | 1989-02-09 | Kettenbauer Gmbh & Co Verfahre | FLOATING GAS REACTOR |
-
1989
- 1989-10-27 DE DE19893935952 patent/DE3935952A1/en active Granted
-
1990
- 1990-09-19 CS CS904558A patent/CS455890A3/en unknown
- 1990-09-19 AU AU62641/90A patent/AU623551B2/en not_active Ceased
- 1990-09-19 BR BR9004665A patent/BR9004665A/en not_active Application Discontinuation
- 1990-09-20 JP JP2248973A patent/JPH0638888B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010131500A (en) * | 2008-12-03 | 2010-06-17 | Sumitomo Heavy Ind Ltd | Sludge treatment method and sludge treatment apparatus |
JP2018505041A (en) * | 2014-12-19 | 2018-02-22 | イーピー ミネラルス,エルエルシー | Opal biogenic silica / expanded perlite composite products |
JP2018529332A (en) * | 2015-09-02 | 2018-10-11 | イーピー ミネラルス,エルエルシー | Regenerated media useful for processing fermentation liquids |
Also Published As
Publication number | Publication date |
---|---|
BR9004665A (en) | 1991-09-10 |
DE3935952C2 (en) | 1993-07-01 |
CS455890A3 (en) | 1992-02-19 |
JPH0638888B2 (en) | 1994-05-25 |
AU6264190A (en) | 1991-03-28 |
DE3935952A1 (en) | 1991-03-28 |
AU623551B2 (en) | 1992-05-14 |
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