JPH0295500A - Method for calcining, washing and capturing sludge - Google Patents
Method for calcining, washing and capturing sludgeInfo
- Publication number
- JPH0295500A JPH0295500A JP24724888A JP24724888A JPH0295500A JP H0295500 A JPH0295500 A JP H0295500A JP 24724888 A JP24724888 A JP 24724888A JP 24724888 A JP24724888 A JP 24724888A JP H0295500 A JPH0295500 A JP H0295500A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- cleaning
- gas
- washing
- water
- 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.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 32
- 238000005406 washing Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 22
- 238000001354 calcination Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 34
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 3
- 230000008020 evaporation Effects 0.000 claims abstract description 3
- 239000002360 explosive Substances 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 239000010419 fine particle Substances 0.000 abstract description 19
- 238000005192 partition Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000571 coke Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000010979 pH adjustment Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はスラッジの焼成及び洗浄・補集方法に関し、特
にスラッジの焼成を効率よく行ない、かつ、後工程とし
て微粒の洗浄−ｉ集を一連の作業で効率よく行ない有害
成分を外部に漏らすことのないスラッジの焼成及び洗浄
・補集方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for burning, cleaning and collecting sludge, and in particular, a method for efficiently burning sludge and cleaning fine particles as a post-process. This invention relates to a method for burning, cleaning, and collecting sludge that can be carried out efficiently and without leaking harmful components to the outside.
一般に、工業廃水等にあって１人体へ悪影響を与える各
種有害重金属を含んでいることが多く。In general, industrial wastewater often contains various harmful heavy metals that have an adverse effect on the human body.
この有害重金属の処理技術には種々の方法が開発されて
いる。この有害重金属は主として水銀、シアン、クロム
、ひ素等またはそれらの化合物が多く知られており、こ
れらの化合物は常態においては容易に分離し得す、その
分離処理方法として、例えば酸化分解して無機化し、更
に水を分離することにより処理することが知られている
。そして、この工程後、海中廃棄や埋立て等によって処
分されることになる。Various methods have been developed to treat these toxic heavy metals. These toxic heavy metals are mainly known to be mercury, cyanide, chromium, arsenic, etc., or their compounds, and these compounds can be easily separated under normal conditions. It is known that the treatment can be carried out by oxidation and further separation of water. After this process, it will be disposed of by disposal in the sea, landfill, etc.
ところで、上記した海中廃棄や埋立て等によると、その
後の環境変化によっては種々の化学変化を伴ないながら
再び有害物質に変化する虞れがある。By the way, when the above-mentioned disposal in the sea or landfill is carried out, there is a possibility that depending on subsequent environmental changes, the materials may turn into harmful substances again, accompanied by various chemical changes.
そこで、前記の廃棄等を行なう前に有害重金属を固化処
理、即ち、水溶性物質を不溶性物質に変え、必要な強度
を与えて廃棄することが必要となり、この固化方法とし
て燃焼固化、コンクリート固化、乾燥処理等が用いられ
ている。Therefore, before carrying out the above-mentioned disposal, it is necessary to solidify the toxic heavy metals, that is, change water-soluble substances to insoluble substances, give them the necessary strength, and dispose of them. Methods for this solidification include combustion solidification, concrete solidification, Drying treatment etc. are used.
前記した燃焼固化処理方法としては、流動床式焼却炉を
使用した固化処理方法が知られており、この処理方法は
焼却炉内に熱媒体（例えば炭化珪素、アルミナ等）を収
容し、この熱媒体中に有害重金属を含有するスラッジを
投入し、高温、高圧によって焼成してクリンカ状と成し
て、均一な性状で不溶固化することがその基本原理であ
る。As the combustion solidification treatment method described above, a solidification treatment method using a fluidized bed incinerator is known, and this treatment method stores a heat medium (for example, silicon carbide, alumina, etc.) in the incinerator, and The basic principle is to put sludge containing harmful heavy metals into a medium and sinter it at high temperature and pressure to form a clinker-like form, which is then insoluble and solidified with uniform properties.
しかしながら、従来の焼却炉内燃焼にあっては、燃焼に
必要な酸素の供給が十分に行なわれず、かつ、流動床の
流動層内の熱媒体及びスラッジの混合投入量の調整がう
まく行なわれないために、スラッジの焼成に十分な熱量
が得られず、あるいは仮に得られたとしても逆に多くの
燃料を使うことになってしまう、また、スラッジの焼成
後、クリンカ状の微粒中には有害重金属が封じ込められ
たままで、排ガスとして大気中・＼放出すると、破壊さ
れて大気汚染の原因となり１人体への悪影響を及ぼすこ
ととなってしまう問題があった。However, in conventional combustion in an incinerator, the oxygen necessary for combustion is not sufficiently supplied, and the mixing amount of heat medium and sludge in the fluidized bed is not well adjusted. Therefore, it is not possible to obtain enough heat to burn the sludge, or even if it could be obtained, a large amount of fuel would be used.Also, after the sludge is burnt, harmful substances may be present in the clinker-like particles. There is a problem in that if heavy metals remain contained and are released into the atmosphere as exhaust gas, they will be destroyed, causing air pollution and having an adverse effect on the human body.
本発明は上記した従来の問題点に着目してなされたもの
で、かかる問題点を解消して焼却炉内に十分な高温を得
、瞬時にタリンカ状となして有害重金属を封じ込めて不
溶固化するとともに、その後工程として得られたタリン
カを洗浄し、有害成分を分離して補集し、大気中には清
浄な排ガスとして放出することができるスラー、ジの焼
成及び洗浄補集手段を提供することを目的としている。The present invention has been made by focusing on the above-mentioned conventional problems, and solves these problems by obtaining a sufficiently high temperature in the incinerator and instantaneously converting it into a tarinka-like form to confine harmful heavy metals and make them insoluble. In addition, to provide a means for firing, washing and collecting slurry, which can wash the tarinka obtained as a subsequent process, separate and collect harmful components, and release it into the atmosphere as clean exhaust gas. It is an object.
この目的を達成するために、本発明に係るスラッジの焼
成及び洗浄・補集方法は熱媒体が収容され、高圧／ヘー
ナを臨ませて配設した流動床式焼却炉内に、前記バーナ
から酸素富化手段を介しての酸素の供給により火焔温度
１６００度以上、以上炉内温度１５００度以」―、前前
記熱媒体温度１４０庶
スラッジを投入し，該スラッジの水分爆発的蒸発作用に
より超微粒のクリンカ状と成して含有重金属を封じ込め
て不溶固化物とし、その不溶固化物６有カスを洗浄・補
集装置に導入し、前記洗浄・補集装置に配設された放水
管からの放水により洗浄し，前記洗浄・補集装置の下部
に設けられた沈澱槽に沈殿される不溶固化物と前記洗浄
・補集装置内に設けられた洗浄補集手段及び脱水手段を
通過させながら清浄されるガスとに分け、かつ、中和手
段を前記沈澱槽と前記放水管とに接続して洗浄水を循環
させるようにしたことを特徴としている。In order to achieve this object, the sludge burning, cleaning and collection method according to the present invention includes a fluidized bed incinerator containing a heating medium and facing a high pressure/heater, and oxygen from the burner. By supplying oxygen through an enrichment means, the flame temperature is 1,600 degrees or more, the furnace temperature is 1,500 degrees or more, and sludge with a heating medium temperature of 140 degrees is charged, and the sludge's water content is explosively evaporated to form ultrafine particles. The heavy metals contained are sealed in the form of clinker and turned into insoluble solidified matter, and the insoluble solidified scum is introduced into a cleaning and collection device, and water is discharged from a water discharge pipe installed in the cleaning and collection device. The insoluble solidified matter precipitated in the sedimentation tank provided at the bottom of the washing/collecting device is cleaned while passing through the washing/collecting means and dehydration means provided in the washing/collecting device. The washing water is separated into two gases, and a neutralizing means is connected to the settling tank and the water discharge pipe to circulate the washing water.
上記したように本発明に係るスラッジの焼成及び洗浄φ
補集方法によると、有害重金属は瞬時に超微粒のクリン
カ状として封じ込められ、その不溶固化物を含有するガ
スは洗浄・補集装置によって効率よく後処理され，清浄
なガスとして大気中に放出されることになる。As described above, sludge baking and cleaning φ according to the present invention
According to the scavenging method, harmful heavy metals are instantly trapped in the form of ultra-fine clinker particles, and the gas containing the insoluble solidified material is efficiently post-processed by a cleaning and scavenging device and released into the atmosphere as clean gas. That will happen.
次に本発明に係るスラッジ焼成及び洗浄・捕集方法の実
施例を図面を参照して詳細に説明する。Next, embodiments of the sludge burning, cleaning and collection method according to the present invention will be described in detail with reference to the drawings.
第１図は本発明を実施したスラッジ焼成及び洗浄・捕集
方法を表わす全体説明図．第２図は同じく流動床下部に
備えられる散気盤の分離斜視図。Figure 1 is an overall explanatory diagram showing the sludge burning, cleaning and collection method according to the present invention. FIG. 2 is an exploded perspective view of an air diffuser provided at the bottom of the fluidized bed.
第３図は同じく散気盤の要部断面図，第４図は同じく洗
浄ψ捕集装置内に備えられた集塵板の平面図．第５図は
同じく部分断面図である。Figure 3 is a sectional view of the main part of the air diffuser, and Figure 4 is a plan view of the dust collection plate installed in the cleaning ψ collection device. FIG. 5 is also a partial sectional view.
これらの図にあって１は、耐火物２で成型された流動床
式焼却炉本体であってこの本体１は、略円筒状を成し、
その上部は大径のフリーボード部３を構成している．こ
のフリーボード部３の略中間位置には、高圧へ−す（５
０〜７ ０ Ｋ ｇ ／ ｃｍ３）４が、前記７リ一ボ
ード部３に対し、斜め下方向に、後述する流動床に本体
ｌを貫通して臨ませて配設されており、この高圧バーナ
４は酸素富化膜を有する酸素富化装置５が設けられたバ
ーナー用ブロアー６と連接されており、この酸素富化装
置５で酸素リッチなエアーが前記高圧バーナ４に供給さ
れ、その火焔温度１６００〜１８００°Ｃ以上として、
前記本体内１の温度を１５００〜１６００”ｃ以上に保
つものとなっている。In these figures, 1 is a fluidized bed incinerator body formed of a refractory 2, and this body 1 has a substantially cylindrical shape,
The upper part constitutes a large-diameter freeboard section 3. Approximately in the middle of this freeboard section 3, a high voltage
0 to 70 K g/cm3) 4 is disposed diagonally downward to the 7-liquid board portion 3 so as to face the fluidized bed to be described later through the main body 1, and this high-pressure burner 4 is connected to a burner blower 6 provided with an oxygen enrichment device 5 having an oxygen enrichment membrane, and this oxygen enrichment device 5 supplies oxygen-rich air to the high pressure burner 4 to increase its flame temperature. As 1600-1800°C or higher,
The temperature inside the main body 1 is maintained at 1500 to 1600''c or higher.
更に、前記高圧バーナ４の下方位置にはテーパ部７が形
成され、このテーパ部７が、前記高圧バーナ４と略モ行
状態に形成されており、前記高圧バーナ４の火焔が、後
述する流動層り面に効率よ〈吹き付けられて、燃焼が行
なえるようになっている。そしてこのテーパ部７の下位
には、オイルコークスフィーダ８が本体ｌを貫通して、
後述するｊＱｔｊ１層内にその開口８ａが臨まれており
、このオ・ｒルコークスフィーダ８は、補助燃料として
のオイルコークスを流動層内に投入するもので、後述す
る熱媒体と相まって、効率よく燃焼させ、流動層内温度
を１４００〜１５００°Ｃ以上に安定して維持すること
ができるように配設されている０図中９は、前記大径の
フリーボード部３より小径に形成された波動床、１０は
前記波動床９中に収容された熱媒体である。この流動床
９内には、前記したオイルコークスフィーダ８によって
投入されたオイルコークス、及び、珪砂等の熱媒体１０
．そして有害重金属を含有するスラッジ１１が混合状態
で、流動層Ａを形成したものとなっている。尚、１２は
前記流動層Ａ内に適量の熱風を吹き込むために、前記流
動層Ａ下部に設けられた散気盤、１３は熱媒体を常に適
量に保つ調整作用を有する熱媒体調節兼取出口、１４は
取入口１４ａを介して、流動層Ａ内に熱っせられたエア
ーを供給し、流動層Ａ内の、熱媒体９及びスラッジ１１
を撹拌する流動ブロアーである。Furthermore, a tapered part 7 is formed at a lower position of the high-pressure burner 4, and this tapered part 7 is formed in a substantially parallel state with the high-pressure burner 4, so that the flame of the high-pressure burner 4 can be It is sprayed efficiently onto the layered surface, allowing combustion to occur. An oil coke feeder 8 penetrates the main body l below this tapered part 7,
The opening 8a faces into the first layer of jQtj, which will be described later, and this oil coke feeder 8 feeds oil coke as auxiliary fuel into the fluidized bed, and in combination with the heat medium, which will be described later, efficiently 9 in the figure is formed to have a smaller diameter than the large diameter freeboard part 3, which is arranged so that the temperature inside the fluidized bed can be stably maintained at 1400 to 1500 ° C or higher. A wave bed 10 is a heat medium housed in the wave bed 9. This fluidized bed 9 contains oil coke fed by the oil coke feeder 8 and a heat medium 10 such as silica sand.
．． The sludge 11 containing harmful heavy metals is mixed to form a fluidized bed A. In addition, 12 is a diffuser plate provided at the bottom of the fluidized bed A in order to blow an appropriate amount of hot air into the fluidized bed A, and 13 is a heat medium adjustment/takeout port that has an adjustment function to always maintain the appropriate amount of heat medium. , 14 supply heated air into the fluidized bed A through the intake port 14a, and the heating medium 9 and sludge 11 in the fluidized bed A
It is a fluid blower that stirs the water.
次に、前記散気盤１２の構造及び作用について説明する
。Next, the structure and operation of the diffuser panel 12 will be explained.
第２図、第３図において１５は散％盤本体であり、この
散気盤本体１５は耐熱ムで円板状に形成されている。ま
た、散気盤本体１５には適宜個数のネジ孔１６・１６・
・・が貫通して穿設され、この各ネジ孔１６に熱気噴出
用４体１７が螺着されている。In FIGS. 2 and 3, reference numeral 15 denotes a diffuser body, and this diffuser body 15 is made of heat-resistant rubber and formed into a disk shape. In addition, the diffuser body 15 has an appropriate number of screw holes 16.
... are drilled through the screw holes 16, and four hot air jetting bodies 17 are screwed into each screw hole 16.
この４体１７はネジ孔１６に合される筒状軸部１８を有
しており、この軸部１８の上部に逆椀状のキャップ部１
９が固設されている。このキャップ部１９内にはその路
中１７Ｂ高さの位置に多数の孔２０−２０・・・を穿設
した中板２１が固設されている。この中板２１の中央部
には円孔２２が穿設され、この円孔２２に連通ずるよう
に軸部１８の貫通孔２３を固設し、貫通孔２３は中板２
１によって形成される空間部２４と連通されている。These four bodies 17 have a cylindrical shaft part 18 that fits into the screw hole 16, and an inverted bowl-shaped cap part 1 is attached to the upper part of this shaft part 18.
9 is fixedly installed. Inside this cap part 19, an intermediate plate 21 having a large number of holes 20-20 formed therein is fixedly installed at a height of 17B in the middle of the cap part 19. A circular hole 22 is bored in the center of the middle plate 21, and a through hole 23 of the shaft portion 18 is fixedly provided so as to communicate with the circular hole 22.
1 and is in communication with a space 24 formed by 1.
一方、軸部１８外周の螺出の１端はキャップ部１９の下
端縁より梢下方位置にし、蓋体１７をネジ孔１６に螺着
したとき、午ヤップ部１９の下端縁と散気盤本体１５の
一ヒ面とに隙間が形成され、その隙間から熱気が噴出す
るようになっている。On the other hand, one end of the screw on the outer periphery of the shaft portion 18 is positioned below the lower edge of the cap portion 19, and when the lid body 17 is screwed into the screw hole 16, the lower edge of the cap portion 19 and the diffuser body A gap is formed between 15 and 15, and hot air is blown out from the gap.
このように、散気盤本体に蓋体を螺着したため、散気盤
の孔から珪砂等が熱気路内に落下することがなくなり、
その除去をすることがなくなり１便利なものとなってい
る。In this way, since the lid is screwed onto the diffuser body, silica sand, etc. will not fall into the hot air path from the holes in the diffuser.
This is convenient because you no longer have to remove it.
また、キャップ部の下端縁の隙間から熱気を噴出するよ
うにしたため、その熱気の吹き出しが強くなるものとな
っている。Furthermore, since the hot air is blown out from the gap at the lower edge of the cap, the hot air blows out more strongly.
尚、図中２６はテーパ部７を貫通して本体ｌ内へ臨まれ
ているスラッジスクリューツイータ、２７はクリンカ状
微粒を捕集し、かつ、後述する洗浄・捕集装置に微粒を
搬入するサイクロン、２８はサイクロンで捕集された５
〜７ミクロン以りの微粒を流動床９に再送する連通管で
ある。In the figure, 26 is a sludge screw tweeter that penetrates the tapered part 7 and faces into the main body l, and 27 is a cyclone that collects clinker-like particles and transports the particles to a cleaning and collection device to be described later. , 28 was collected by cyclone 5
This is a communication pipe that retransmits fine particles of ~7 microns to the fluidized bed 9.
次に図中３０は、耐熱、耐錆性金属で、略円筒形状に成
形された洗浄・捕集装置である。この装置３０は、タリ
ンカ状の微粒を含有するガスを洗浄して、ｖｉ浄ガスと
して、大気中に放出し、あるいは、後述する沈澱槽内に
、微粒が沈澱されて後処理を容易にしたものであって、
その内部には前記装Δ３０の内径と同径の複数枚積層さ
れ、耐熱、耐錆、耐喰性の集塵板３１・３１が備えられ
ている。この集塵板３１−３１は２段とされて、その構
造は第４図及び第５図に示されるものとなっている。Next, numeral 30 in the figure is a cleaning/collecting device made of heat-resistant and rust-resistant metal and formed into a substantially cylindrical shape. This device 30 cleans the gas containing the tarinka-like particles and releases it into the atmosphere as a vi-purified gas, or the particles are precipitated in a settling tank to be described later to facilitate post-processing. And,
Inside thereof, a plurality of heat-resistant, rust-resistant, and bite-resistant dust collecting plates 31 are provided, which are stacked and have the same diameter as the inner diameter of the device Δ30. This dust collection plate 31-31 is made into two stages, and its structure is as shown in FIGS. 4 and 5.
即ち、この集塵板３１−３１は、複数枚のスクリーン板
３２を積層（例えば３・５・１０枚）したものであって
、微粒子を含むガスが略４５°の角度で集塵板３１の下
方から上昇しながら、通過するように、透孔３３・３３
・・・が多数同一方向に向けられて、配設され、その形
状は網目状とされている。この透孔３３へのガスの導入
角度は４５°とされ、ガス通過時の圧力損失と、ガス中
の微粒の衝突分離の効果を調和させて、微粒の捕集を最
大限効率的に行なうためのものとなっており、更にこの
透孔３３の厚み約０．１５ｍｍ程度、その形状を蜂の巣
状として、横方向の中心間寸法Ａは約９．００ｍｍ程度
、縦方向の中心間隔Ｂは約５．５ｍｍ程度、透孔３３相
互の幅Ｃを約２．２５ｍｍ程度、その開き角度りを１１
０’程度とされている。このスクリーン板３２の積層方
向は第４図に示されている。That is, this dust collecting plate 31-31 is made by laminating a plurality of screen plates 32 (for example, 3, 5, 10 screens), and the gas containing fine particles is formed on the dust collecting plate 31 at an angle of approximately 45°. The through holes 33, 33 pass through while rising from below.
A large number of... are arranged facing in the same direction, and the shape is mesh-like. The angle of introduction of the gas into the through hole 33 is set to 45°, in order to harmonize the pressure loss when the gas passes and the effect of collision separation of the fine particles in the gas, and to collect the fine particles as efficiently as possible. Further, the thickness of the through hole 33 is about 0.15 mm, the shape is honeycomb-like, the horizontal center-to-center dimension A is about 9.00 mm, and the vertical center-to-center distance B is about 5 mm. The width C between the through holes 33 is about 2.25 mm, and the opening angle is about 11 mm.
It is said to be about 0'. The stacking direction of this screen plate 32 is shown in FIG.
即ち、隣接するスクリーン板３２の透孔３３が交互に９
０°で交差しており、さらに、その相互の接合間隔は１
間隙を１〜２ｍｍ程度おいて積層し、この積層によって
密着抵抗がなくなり、微粒の捕集に効率がよいものとな
っている。That is, the through holes 33 of adjacent screen plates 32 are arranged alternately in 9
They intersect at 0°, and the mutual junction distance is 1
They are laminated with a gap of about 1 to 2 mm, and this lamination eliminates adhesion resistance and is efficient in collecting fine particles.
次にこの集塵板３１・３１ａの作用について説明する。Next, the function of the dust collecting plates 31 and 31a will be explained.
クリンカ状微粒を含有するガスが、集塵板３１内に導入
されると、このガスは先ず、最前位置にあるスクリーン
板３２の透孔３３によって４５゜の傾斜角を以って、一
定の方向に侵入し、次のスクリーン板３２の透孔３３に
よって、４５°の角度の侵入と同時に９０°方向を変え
て１次のスクリーン板３２によってさらにガスは９０°
方向に向きを変える。このようにして、ガスは急激に９
０°方向変換を繰り返して、螺旋状に移動するので、そ
の都度ガス中の微粒は分離あるいはスクリーン板３２に
付着する等を繰り返して捕集される。When gas containing clinker-like particles is introduced into the dust collection plate 31, the gas is first directed in a fixed direction at an inclination angle of 45° by the through holes 33 of the screen plate 32 located at the frontmost position. The gas enters at an angle of 45° through the through hole 33 of the next screen plate 32, and at the same time changes its direction by 90°.
change direction. In this way, the gas suddenly
Since the gas moves spirally by repeating 0° direction changes, fine particles in the gas are repeatedly separated or attached to the screen plate 32 and collected each time.
一方、図中３４は第一の放水管、４０は第一の放水管よ
り上部に設けられた第二の放水管である。On the other hand, in the figure, 34 is a first water discharge pipe, and 40 is a second water discharge pipe provided above the first water discharge pipe.
この第一の放水管３４は、本体３０の外部から内部へ貫
通されて、前記集塵板３１の上方に配設され、また第二
の放水管４０は、集塵板３１ａのＬ方に配設されている
。この第一の放水管３４の下端にはスプレィノズル３４
ａ・３４ａが設けられ、そのスプレィノズル３４ａから
集塵板３１上に放水される。また第二の放水管４０の下
端にはやはリスプレイノズル４０ａ＊４０ａが設けられ
、集塵板３１ａ上に放出され、この放出により、前記集
塵板３１及び３１ａを通過したガスを洗浄するものとな
っており、あるいは後述する沈澱槽に微粒は沈澱される
。This first water discharge pipe 34 penetrates from the outside to the inside of the main body 30 and is disposed above the dust collecting plate 31, and the second water discharge pipe 40 is disposed in the L direction of the dust collecting plate 31a. It is set up. A spray nozzle 34 is installed at the lower end of this first water discharge pipe 34.
a.34a is provided, and water is sprayed onto the dust collection plate 31 from the spray nozzle 34a. Also, a respray nozzle 40a*40a is provided at the lower end of the second water discharge pipe 40, and the gas is discharged onto the dust collecting plate 31a, and this discharge cleans the gas that has passed through the dust collecting plates 31 and 31a. Otherwise, the fine particles are settled in a settling tank, which will be described later.
即ち、集塵板３１及び３１ａをガスは通過することとな
るので、完全に洗浄される０図中３５は水切用エリミネ
ータ−であって、このエリミネータ−３５によって水分
を含んだガスは通過する際に完全に脱水されて、ガス排
出口３６より、無害な清浄ガスとして大気中に放出され
る。In other words, the gas passes through the dust collecting plates 31 and 31a, so it is completely cleaned. 35 in the figure is a water draining eliminator, and this eliminator 35 prevents the gas containing moisture from passing through. The gas is completely dehydrated and released into the atmosphere from the gas outlet 36 as a harmless clean gas.
一方、図中３７は本体３０の下部に設けられた沈澱槽で
ある。この沈澱槽３７は、耐水、耐錆性であって、略直
方体状とされている。この沈澱槽３７には各々仕切られ
た室３７ａ〜３７ｅを有し、この３７ａから３７ｅに順
に微粒含有水が移行し、この移行の際に微粒子は沈澱さ
れ、この沈澱が良好になされるために各仕切室３７ａ〜
３７ｅの交互に上下配置されており、水が上下動してＰ
Ｈ調整装置３８に送られる。このＰＨ調整装置３８は沈
澱槽３７から送られた洗浄水を中和し、その洗浄水はポ
ンプ３９を介して前記放水管３４．４０に運ばれ放水さ
れる。従って、洗浄水は常に中和されて不純物を含まな
いものとなって放水されることとなる。On the other hand, numeral 37 in the figure is a settling tank provided at the bottom of the main body 30. This settling tank 37 is water resistant and rust resistant, and has a substantially rectangular parallelepiped shape. This settling tank 37 has partitioned chambers 37a to 37e, and the water containing fine particles is transferred from 37a to 37e in order, and during this transfer, the particles are precipitated. Each partition room 37a~
37e are placed alternately up and down, and the water moves up and down to reach P.
The signal is sent to the H adjustment device 38. This PH adjustment device 38 neutralizes the wash water sent from the settling tank 37, and the wash water is conveyed to the water discharge pipes 34, 40 via the pump 39 and discharged. Therefore, the cleaning water is always neutralized and free of impurities before being discharged.
このように構成されたスラッジの焼成及び洗浄・捕集方
法によると、スラッジがスラッジスクリューフィーダ２
６によって焼却炉本体１内の波動層Ａ内に投入されると
、１４００〜１５００度以上の温度によってスラッジが
水分の爆発的蒸発作用によって、瞬時にタリンカ状の微
粒となる。According to the sludge firing, cleaning and collection method configured in this way, the sludge is transferred to the sludge screw feeder 2.
When the sludge is introduced into the wave layer A in the incinerator body 1 by step 6, the sludge instantly becomes fine particles in the form of tarinka due to the explosive evaporation of water at a temperature of 1,400 to 1,500 degrees or more.
この微粒は前記焼却炉本体１上部に設けられたすイクロ
ン２７によって捕集される。この蒔５〜７ミクロン程度
の微粒は再度流動層Ａ内に管２８によって戻され再燃焼
される。また、サイクロン２７によって捕集された微粒
含有ガスは、洗浄・捕集装置３０内に導かれ、沈澱槽３
７中の仕切室３７ａ〜３７ｅを流動する洗浄水で洗浄さ
れ、その洗浄水中に含まれる微粒は各仕切室３７ａ〜３
７ｅの底に次第に沈澱される。そして、この洗浄水はＰ
Ｈ調整装置３８に送られ、中和されてポンプ３９を介し
て放水管３４．４０から放水されるという手順を繰り返
す。また、沈澱槽３７中で洗浄水中の微粒が完全に抜け
ない場合、前記した集塵板３１を通過する際に捕集され
ることとなる。These fine particles are collected by a suiclon 27 provided on the upper part of the incinerator main body 1. The fine particles of about 5 to 7 microns are returned to the fluidized bed A through the pipe 28 and re-combusted. Further, the fine particle-containing gas collected by the cyclone 27 is guided into the cleaning/collection device 30, and is sent to the settling tank 3.
The partitions 37a to 37e in the partitions 37a to 37e are washed with flowing washing water, and the fine particles contained in the washing water are removed from the partitions 37a to 3.
It gradually settles to the bottom of 7e. And this washing water is P
The procedure of water being sent to the H regulator 38, neutralized, and discharged from the water discharge pipe 34, 40 via the pump 39 is repeated. Furthermore, if the fine particles in the washing water do not come out completely in the settling tank 37, they will be collected when passing through the dust collecting plate 31 described above.
尚、本実施例では集塵板や放水管を２つとしたが、これ
に限られるものではない。In this embodiment, two dust collecting plates and two water discharge pipes are used, but the present invention is not limited to this.
に述したように１本発明に係るスラッジの焼成及び洗浄
・捕集方法によると、焼却炉本体内に貨来にない高温が
得られ、スラッジは効率よ〈焼成され、有害重金１４は
タリンカ状の微粒中に封じ込められ、均一な性状の不溶
固化物となる。また、焼成後のカス中の微粒は後工程に
となる沈澱槽や集塵板で捕集され、ガス中の微粒がなく
なり、大気中には人体に悪影響のない清浄な状態のガス
となって放出される。さらに、洗浄水はＰＨ調整装置を
通して循環させるので、処理も容易となり。As described in 1. According to the sludge firing, cleaning and collection method according to the present invention, a high temperature unprecedented in the incinerator body can be obtained, the sludge is efficiently fired, and the toxic heavy metals 14 are converted into tarinka-like It is encapsulated in fine particles and becomes an insoluble solid with uniform properties. In addition, the fine particles in the residue after firing are collected in the settling tank and dust collecting plate in the subsequent process, eliminating the fine particles in the gas and leaving the atmosphere as clean gas that does not have any adverse effects on the human body. released. Furthermore, since the cleaning water is circulated through a pH adjustment device, processing becomes easier.
経済的にも有利である。It is also economically advantageous.
ｆ５１図は本発明に係るスラッジの焼成及び洗浄・捕集
方法が実行されるプラントの構成図、第２図は同散気盤
の分離状１Ｂの斜視図、第３図は同要部断面図、：５４
図は同集塵板の部分平面図、第５図は同第４図中のＩ−
Ｉ線に沿った端面図である。
１・・・焼却炉本体 ４・・・高圧バーナー５・・・酸
素富化手段 ９・・・筺動床１０・・・熱媒体 １１・
・・スラッジ１２・・・散気盤 ３０・・・洗浄・捕集
袋ご３１・・・集塵板 ３７・・・沈澱槽
３４・４０・・・放水管 ３８・・・ＰＨ調整装置３９
・・・洗浄水循遺ポンプ Ａ・・・流動層第２図FIG. , :54
The figure is a partial plan view of the dust collecting plate, and Figure 5 is the I-
It is an end view along I line. 1... Incinerator main body 4... High pressure burner 5... Oxygen enrichment means 9... Housing floor 10... Heat medium 11.
...Sludge 12...Air diffuser 30...Washing/collection bag 31...Dust collection plate 37...Sedimentation tank 34, 40...Water pipe 38...PH adjustment device 39
...Washing water circulation pump A...Fluidized bed Fig. 2
Claims (1)
た流動床式焼却炉内に、前記バーナから酸素富化手段を
介しての酸素の供給により火焔温度１６００度以上、前
記炉内温度１５００度以上、前記熱媒体温度１４００度
以上とし、前記熱媒体内に有害重金属含有スラッジを投
入し、該スラッジの水分爆発的蒸発作用により超微粒の
クリンカ状と成して含有重金属を封じ込めて不溶固化物
とし、その不溶固化物含有ガスを洗浄・補集装置に導入
し、前記洗浄・補集装置に配設された放水管からの放水
により洗浄し、前記洗浄・補集装置の下部に設けられた
沈澱槽に沈澱される不溶固化物と前記洗浄・補集装置内
に設けられた洗浄補集手段及び脱水手段を通過させなが
ら清浄されるガスとに分け、かつ、中和手段を前記沈澱
槽と前記放水管とに接続して洗浄水を循環させるように
したことを特徴とするスラッジの焼成及び洗浄。 補集方法。(1) A fluidized bed incinerator containing a heat medium and arranged facing a high pressure burner is heated to a flame temperature of 1600 degrees or higher by supplying oxygen from the burner through an oxygen enrichment means. The temperature is set to 1500 degrees or higher, the heating medium temperature is set to 1400 degrees or higher, and sludge containing harmful heavy metals is introduced into the heating medium, and the sludge is formed into ultrafine clinker particles by the explosive evaporation action of moisture to confine the contained heavy metals. The gas containing the insoluble solidified material is introduced into a cleaning/collecting device, and is washed by water discharge from a water discharge pipe installed in the cleaning/collecting device, and then the gas containing the insoluble solidified material is introduced into a cleaning/collecting device, and is washed with water from a water discharge pipe installed in the cleaning/collecting device. The insoluble solidified matter precipitated in the provided settling tank is separated from the gas that is purified while passing through the cleaning and collection means and the dehydration means provided in the cleaning and collection device, and the neutralization means is A method for burning and washing sludge, characterized in that the settling tank and the water discharge pipe are connected to circulate washing water. Completion method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24724888A JPH0295500A (en) | 1988-09-30 | 1988-09-30 | Method for calcining, washing and capturing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24724888A JPH0295500A (en) | 1988-09-30 | 1988-09-30 | Method for calcining, washing and capturing sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0295500A true JPH0295500A (en) | 1990-04-06 |
Family
ID=17160663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24724888A Pending JPH0295500A (en) | 1988-09-30 | 1988-09-30 | Method for calcining, washing and capturing sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0295500A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS513375A (en) * | 1974-06-29 | 1976-01-12 | Toshihiko Taniguchi | Gasu oyobi funjinnokyushuki |
| JPS5128263A (en) * | 1974-09-03 | 1976-03-10 | Kajima Doro Kk | |
| JPS5452674A (en) * | 1977-10-05 | 1979-04-25 | Kiyuugo Nobuhara | Method of burning sludge containing heavy metals |
| JPS5610525A (en) * | 1979-06-28 | 1981-02-03 | Minnesota Mining & Mfg | Latent lowis acid catalysts and method |
| JPS61134519A (en) * | 1984-11-30 | 1986-06-21 | Takuma Co Ltd | Sludge reduction reaction device |
-
1988
- 1988-09-30 JP JP24724888A patent/JPH0295500A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS513375A (en) * | 1974-06-29 | 1976-01-12 | Toshihiko Taniguchi | Gasu oyobi funjinnokyushuki |
| JPS5128263A (en) * | 1974-09-03 | 1976-03-10 | Kajima Doro Kk | |
| JPS5452674A (en) * | 1977-10-05 | 1979-04-25 | Kiyuugo Nobuhara | Method of burning sludge containing heavy metals |
| JPS5610525A (en) * | 1979-06-28 | 1981-02-03 | Minnesota Mining & Mfg | Latent lowis acid catalysts and method |
| JPS61134519A (en) * | 1984-11-30 | 1986-06-21 | Takuma Co Ltd | Sludge reduction reaction device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5259863A (en) | Method and apparatus for the incineration of garbage and refuse | |
| US4793937A (en) | Method and apparatus for separating contaminants from fluidizable solids | |
| EP2320141A1 (en) | Method for incinerating waste by two-stage swirling flow fluidized bed incinerator | |
| US3859174A (en) | Recovery of potable water from sanitary waste using solid wastes and refuse as a heat source | |
| CN105498431B (en) | A kind of wood fibre drying device tail gas environment-friendly disposal system | |
| TW394799B (en) | Method and apparatus for removing and/or causing recycling of materials | |
| JPH07178344A (en) | Method and device for heating and pulverizing material | |
| JP4426923B2 (en) | Cement kiln exhaust gas treatment method | |
| RU1836124C (en) | Installation for regeneration and production of auxiliary filter agents | |
| JPH0295500A (en) | Method for calcining, washing and capturing sludge | |
| JP3465708B1 (en) | Heat treatment equipment for powdery waste | |
| JPH03204508A (en) | Purifying treating method for sludge | |
| KR20110070930A (en) | Waste water sludge fuel | |
| JP3437526B2 (en) | Method and apparatus for manufacturing ground improvement material | |
| CN207391290U (en) | Building porcelain granule produces mechanism | |
| US4335663A (en) | Thermal processing system | |
| JP2000300953A (en) | Method for treatment of combustion exhaust gas of waste | |
| JP3174527B2 (en) | How to incinerate waste | |
| RU2198024C1 (en) | Plant for neutralization of organic wastes | |
| Balakrishnan et al. | State of the Art Review on Sludge Incineration Practice | |
| WO1999015466A2 (en) | Glass furnace exhaust gas filter combined with raw material preheater | |
| JP2004025152A (en) | Treatment method of incineration ash | |
| KR20110091912A (en) | Food waste fuel | |
| JP2722079B2 (en) | Method and apparatus for removing suspended dust in high-temperature atmosphere | |
| JP2002213734A (en) | Waste-liquid treating method |