JPS5867318A - Separation of fine particle from gas washing liquid - Google Patents
Separation of fine particle from gas washing liquidInfo
- Publication number
- JPS5867318A JPS5867318A JP56165821A JP16582181A JPS5867318A JP S5867318 A JPS5867318 A JP S5867318A JP 56165821 A JP56165821 A JP 56165821A JP 16582181 A JP16582181 A JP 16582181A JP S5867318 A JPS5867318 A JP S5867318A
- Authority
- JP
- Japan
- Prior art keywords
- washing liquid
- cleaning liquid
- fine particles
- scrubber
- fine powder
- 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
Abstract
Description
【発明の詳細な説明】
１、 本発明は石炭や石炭・重質伸スラリーをガス化、
１した場合に生成ガスに混合している微粉の除去刃、−
１法に係り、特に微粉の除去に好適なガス洗浄液か針ら
の微粉分離方法に関するものである。[Detailed description of the invention] 1. The present invention gasifies coal or coal/heavy elongation slurry,
1, a blade for removing fine powder mixed in the generated gas, -
The present invention relates to a method for separating fine powder from needles from a gas cleaning liquid, which is particularly suitable for removing fine powder.
・・ 石炭や石炭・重質油スラリーをガス化した時の生
成ガス中にはタールや微粒子が多散に混合している。こ
れらのタールや？ｊ１１．粒子を除去するため、ガス化
炉から排出される生成ガスは流動層クエンチャ−に導き
タール分を除去し、微粒子はサイクロンで捕集している
。しかし、非常に粒径の小さな微粉やタールは捕集でき
ずにガスに同伴されるためスクラバーに導き水で洗浄し
、除去する方法がとられている。... The gas produced when coal or coal/heavy oil slurry is gasified contains a large amount of tar and fine particles. These tars? j11. To remove particles, the generated gas discharged from the gasifier is introduced into a fluidized bed quencher to remove tar, and fine particles are collected in a cyclone. However, very small particles of fine powder and tar cannot be collected and are entrained in the gas, so a method is used to remove them by introducing them into a scrubber and washing them with water.
洗浄方法としては水を洗浄液槽からスクラバーに送り込
み、微粉やタールを洗い落し、水と一緒に洗浄液槽に戻
す循環方式が採用されている。このためスクラバーから
は微粉の表面にタールが凝縮した物が洗浄液と同時に排
出される。したがって長時間にわたりガス化炉を運転す
る場合には洗浄液中の微粉の量は次第に増加するためス
クラバー内や洗浄液循環パイプに堆積し、洗浄液の流路
を閉塞してしまう。このためスクラバーから排出した洗
浄液から微粉を除去する必要がちシフイルターでＦ遇す
ることが考えられている。しかし、洗浄液に混入してい
る微粉は非常に小さいためフィルターが目詰りし、微粉
の分離が困難である。The cleaning method uses a circulation method in which water is sent from the cleaning liquid tank to the scrubber, where fine powder and tar are washed away, and then returned to the cleaning liquid tank together with the water. Therefore, tar condensed on the surface of fine powder is discharged from the scrubber together with the cleaning liquid. Therefore, when the gasifier is operated for a long period of time, the amount of fine powder in the cleaning liquid gradually increases and accumulates in the scrubber and the cleaning liquid circulation pipe, thereby clogging the cleaning liquid flow path. For this reason, it is necessary to remove fine powder from the cleaning liquid discharged from the scrubber, and it is considered that a sifter may be used to remove the fine powder. However, the fine powder mixed in the cleaning solution is so small that the filter becomes clogged, making it difficult to separate the fine powder.
本発明Ｌ１前記の欠点をなくシ、ガスの洗浄液に混入し
ている微粉６：分離し、長時間にわたシ洗浄液を循環使
用する方法を提供することにある。The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a method for separating the fine powder mixed in the gas cleaning liquid and circulating the cleaning liquid for a long period of time.
本発明は石炭および石炭・重質油スラリーをガス化した
時の微粉を含んだスクラバー洗浄液に界面活性剤を添加
し、ガスを通気すると微粉を捕集した状態で発泡するこ
とを見い出したことによる。The present invention is based on the discovery that when a surfactant is added to the scrubber cleaning liquid containing fine powder when coal and coal/heavy oil slurry is gasified, and gas is aerated, foaming occurs while the fine powder is collected. .
このため水に界面活性剤を添加した液体を洗浄液として
スクラバーに供給し、洗浄後微粉の混入した洗浄液をス
クラバーよシも圧力の低い洗浄液槽に排出し、洗浄液が
吸収しているガスを放出させ、発泡するようにしたもの
である。すなわち、スクラバーから排出された微粉を混
入する洗浄液は界面活性剤の添加により水を洗浄液とし
た場合よりも表面張力が小さくなり発泡しやすい状態と
なっており、しかも洗浄液はスクラバー内で生成ガスの
一部である炭酸ガス等を吸収している。このためスクラ
バーよりも圧力の低い状態にしている洗浄液槽で微粉を
捕集して発泡し、市はθ、浄浄液衣表面移動して浮遊す
るので泡を電動の羽根車等で連続的に除去することによ
り、微粉は除去され常に微粉の少ない洗浄液を循環供給
できるようにしたものである。For this purpose, a liquid made by adding a surfactant to water is supplied to the scrubber as a cleaning liquid, and after cleaning, the cleaning liquid mixed with fine powder is discharged into a cleaning liquid tank with low pressure, both in the scrubber and the scrubber, to release the gases absorbed by the cleaning liquid. , which is made to foam. In other words, the surface tension of the cleaning liquid mixed with fine powder discharged from the scrubber is smaller than that of water as a cleaning liquid due to the addition of a surfactant, and the cleaning liquid is in a state where it is more likely to foam due to the addition of a surfactant. It absorbs some carbon dioxide gas. For this reason, the fine particles are collected in a cleaning liquid tank with a lower pressure than the scrubber and foamed, and the particles move and float on the surface of the cleaning liquid at θ, so the bubbles are continuously removed using an electric impeller, etc. By removing the fine powder, it is possible to constantly circulate and supply a cleaning liquid with a small amount of fine powder.
本発明け（Ａ：ｎ−液として水に界面活性剤を添加した
ものを用い、洗浄液槽をスクラバーよりも低い圧力に保
ち吸収ガスを放出させることで効果を発揮するので、水
に界面活性剤の一種である中性洗剤をＱ、 ５ ｗ を
瞥、添加したものを洗浄液とし、スクラバー圧力３．０
Ｋ９ ／ ｃｍ ２、石炭・重質油スラＩＪ −供給
量１７にり／ｈ、スチーム供給量３４Ｋｇ／ｈ、酸素供
給量１０Ｋｇ／ｈ、洗浄液槽は常圧とし、６０時間ガス
化炉を運転し、その効果を調べた。In the present invention (A: N-liquid is water with a surfactant added to it, and the cleaning liquid tank is kept at a lower pressure than the scrubber to release the absorbed gas, which is effective. A neutral detergent, which is a type of Q, was added to the cleaning liquid, and the scrubber pressure was 3.0.
K9/cm2, coal/heavy oil slug IJ - supply rate 17 kg/h, steam supply rate 34 kg/h, oxygen supply rate 10 kg/h, cleaning liquid tank at normal pressure, and the gasifier was operated for 60 hours. , investigated its effect.
図面は本発明のＪニ記条件で微粉を浮遊させ、これを連
続除去し、循環している洗浄液に混入している微粉濃度
の経時変化を従来法と比較（〜たものでちる。The drawing shows a comparison of the changes over time in the concentration of fine particles mixed in the circulating cleaning solution with a conventional method by suspending fine powder under the conditions described in J.D. of the present invention and continuously removing it.
洗浄液として水を使用した場合には洗浄液中の微粉濃度
１けガス化開始後の経過時間と共に増加１２６０時１ｊ
ト”：’ ＦＪ ６ｗ １ ｎ；、に′！ｒ”＝” ｒ
いＺ）、、 −Ｊｊ本発明すなわち水に中性洗剤Ｑ、
５ ｗ を添ｌ用しｌｒ−場合の洗浄液中の微粉濃度
２はガス化開始後約３０時間まではゆるやかに増加し約
１，８ｗｔ％となシ、その後はほとんど変化がなく２．
０〜２． Ｑ Ｗ ｔ％を維持し、常に微粉の少ない洗
浄水を循環供給できる。When water is used as the cleaning liquid, the fine powder concentration in the cleaning liquid increases by 1 digit with the elapsed time after the start of gasification.
t”:' FJ 6w 1 n;, ni'!r”=”r
Z), -JjThe present invention, i.e. neutral detergent Q in water,
The fine powder concentration 2 in the cleaning solution in the case of adding 5 W and 1 R gradually increases to about 1.8 wt % until about 30 hours after the start of gasification, and after that there is almost no change.
0-2. It is possible to maintain the Q W t% and constantly circulate and supply cleaning water with less fine powder.
このように本発明によれば洗浄液に混入している微粉を
除去できる状態に浮遊分離させる効果はきわめて大きい
ことを示している。As described above, the present invention shows that the effect of floating and separating the fine powder mixed in the cleaning liquid to a state where it can be removed is extremely large.
本発明によれば洗浄液に混入している微粉を泡に付着さ
せて浮遊させることができ、微粉を容易に除去できる。According to the present invention, the fine powder mixed in the cleaning liquid can be attached to the bubbles and suspended, and the fine powder can be easily removed.
図面は本発明の効果を従来法による結果と比較したグラ
フである。
特許出願人 工業技術院長 石板域−The drawing is a graph comparing the effects of the present invention with the results of the conventional method. Patent applicant: Director of the Agency of Industrial Science and Technology
Claims (1)
したガス中に／ｌＬ人し、ている微粉を洗浄除去する方
法において、水に界面活性剤を添加したものを洗浄液と
し、この洗浄液が吸収したガスをスクラバーより低圧下
で放出させることにより微粉を洗浄液から浮遊分離する
ことを特徴とするガス洗浄液からの微粉分離方法。1. In the method of cleaning and removing fine particles contained in the gas produced by gasifying coal and coal/heavy oil slurry, the cleaning liquid is water with a surfactant added. A method for separating fine particles from a gas cleaning liquid, characterized by floating and separating the fine particles from the cleaning liquid by releasing the absorbed gas under low pressure from a scrubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56165821A JPS6010069B2 (en) | 1981-10-19 | 1981-10-19 | Method for separating fine powder from gas cleaning liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56165821A JPS6010069B2 (en) | 1981-10-19 | 1981-10-19 | Method for separating fine powder from gas cleaning liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5867318A true JPS5867318A (en) | 1983-04-21 |
| JPS6010069B2 JPS6010069B2 (en) | 1985-03-14 |
Family
ID=15819630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56165821A Expired JPS6010069B2 (en) | 1981-10-19 | 1981-10-19 | Method for separating fine powder from gas cleaning liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6010069B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006111753A (en) * | 2004-10-15 | 2006-04-27 | Mitsubishi Heavy Ind Ltd | Organic material-containing gas-treating system |
-
1981
- 1981-10-19 JP JP56165821A patent/JPS6010069B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006111753A (en) * | 2004-10-15 | 2006-04-27 | Mitsubishi Heavy Ind Ltd | Organic material-containing gas-treating system |
| JP4568573B2 (en) * | 2004-10-15 | 2010-10-27 | 三菱重工業株式会社 | Biomass gasification gas processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6010069B2 (en) | 1985-03-14 |
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