JPH04197500A - Method for drying water containing sludge - Google Patents
Method for drying water containing sludgeInfo
- Publication number
- JPH04197500A JPH04197500A JP2332817A JP33281790A JPH04197500A JP H04197500 A JPH04197500 A JP H04197500A JP 2332817 A JP2332817 A JP 2332817A JP 33281790 A JP33281790 A JP 33281790A JP H04197500 A JPH04197500 A JP H04197500A
- Authority
- JP
- Japan
- Prior art keywords
- water
- containing sludge
- sludge
- tubular heating
- heating tube
- 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 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 238000009835 boiling Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 abstract description 10
- 239000000243 solution Substances 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 15
- 235000019198 oils Nutrition 0.000 description 15
- 238000002474 experimental method Methods 0.000 description 8
- 239000003925 fat Substances 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 239000002921 fermentation waste Substances 0.000 description 6
- 239000004166 Lanolin Substances 0.000 description 5
- 229940039717 lanolin Drugs 0.000 description 5
- 235000019388 lanolin Nutrition 0.000 description 5
- 239000010801 sewage sludge Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000021323 fish oil Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 240000008415 Lactuca sativa Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は含水スラッジ、とくに含水スラッジ排水の乾燥
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for drying water-containing sludge, particularly water-containing sludge wastewater.
下水道スラッジ、醗酵廃液スラッジ、又はこれらスラッ
ジを多量に含む排水を効率的に処理する方法は公害対策
上強く求められていて、これまでに一般に行われている
方法としては、容器にスラッジを貯留した後、この含水
スラッジを所定量づつ加熱室に搬送して、加熱乾燥を行
うということにより実施していた。A method for efficiently treating sewage sludge, fermentation waste liquid sludge, or wastewater containing large amounts of these sludges is strongly required for pollution control purposes, and the most common method to date is to store the sludge in a container. Thereafter, this water-containing sludge is transported in predetermined amounts to a heating chamber and dried by heating.
しかしながら、上記従来の方法では、設備が大掛かりと
なり、エネルギー費用も高く、その割に必ずしも効率は
よくなかった。However, the conventional methods described above require large-scale equipment, high energy costs, and are not necessarily efficient.
殊に、スラッジが加熱乾燥時に容器内あるいは配管内に
付着して、長く継続して操業を続けることができなくな
り、従って、一般に操業率は低く、メンテナンス費用が
高くならざるを得ないという問題があった。In particular, there is the problem that sludge adheres to the inside of containers or piping during heating and drying, making it impossible to continue operation for a long period of time, resulting in generally low operating rates and high maintenance costs. there were.
そこで、上記従来技術の有する問題点を解決するため、
本発明は、効率よく継続的に含水スラッジを乾燥できる
含水スラッジの乾燥方法を提供することを目的とする。Therefore, in order to solve the problems of the above-mentioned conventional technology,
An object of the present invention is to provide a method for drying water-containing sludge that can efficiently and continuously dry water-containing sludge.
上記目的を達成するため、本発明の含水スラッジの乾燥
方法の特徴構成は、含水スラッジに高沸点溶剤を適量添
加し、これを管状加熱管の一端から定量的に供給すると
共に、前記管状加熱管の他端から３０ｍ／ｓｅｃ以上の
噴出速度で固気分離室内へ放出することにより、この分
散溶液中の揮発成分を蒸発させて前記含水スラッジを脱
水・脱溶剤して乾燥する点にある。In order to achieve the above object, the characteristic configuration of the method for drying water-containing sludge of the present invention is to add an appropriate amount of a high-boiling point solvent to the water-containing sludge, quantitatively supplying it from one end of a tubular heating tube, and By discharging from the other end into the solid-gas separation chamber at a jetting speed of 30 m/sec or more, the volatile components in this dispersion solution are evaporated, and the water-containing sludge is dehydrated, desolventized, and dried.
前記含水スラッジに高沸点溶剤を添加する代わりに、油
脂を適量添加してもよい。Instead of adding a high boiling point solvent to the water-containing sludge, an appropriate amount of oil or fat may be added.
加えて、含水スラッジに高沸点溶剤又は油脂を添加した
ものの水分の大部分を留出した後、これを前記管状加熱
管に供給するようにすると一層好ましい。In addition, it is more preferable to add a high boiling point solvent or oil to the water-containing sludge and then distill off most of the water before supplying the sludge to the tubular heating tube.
更に、含水スラッジに高沸点溶剤又は油脂を添加したも
のを遠心分離その他の方法で濃縮液とし、しかる後、こ
れを前記管状加熱管に供給するようにしてもより好まし
い結果が得られる。Furthermore, even more preferable results can be obtained by adding a high-boiling solvent or oil to water-containing sludge, turning it into a concentrated liquid by centrifugation or other methods, and then supplying this to the tubular heating tube.
本発明者は含水スラッジ排水を乾燥する方法を種々検討
した結果、含水スラッジを高効率で処理する方法として
、これを長管式加熱管に供給すると共に一定以主の速度
で固気分離室へ噴出させることが優れた結果を生じるこ
とを見出した。しかしながら、含水スラッジ排水をこの
方法で直接処理しようとすると、長管式加熱管内でのス
ケール付着が生じて、長時間継続して運転することがで
きないことが判明した。ところが、含水スラッジ排水に
適当量の高沸点溶剤、油脂あるいはそれらの混合物等を
添加して同様に処理すると、長管式加熱管でのスケール
付着が殆ど生じないことを見出し、本発明を完成したも
のである。この理由は、未だ明確になるまでには至って
いないが、加熱管の伝熱面に難揮発性の高沸点溶剤、油
脂等が被膜を形成し、この皮膜がスケール付着を効果的
に防止するものと推定される。As a result of studying various methods for drying water-containing sludge wastewater, the present inventor found a method to treat water-containing sludge with high efficiency by supplying it to a long heating tube and sending it to a solid-gas separation chamber at a constant rate. We have found that squirting produces excellent results. However, when attempting to directly treat water-containing sludge wastewater using this method, it was found that scale adhesion occurred within the long heating tubes, making it impossible to operate continuously for a long period of time. However, they discovered that when water-containing sludge wastewater is treated in the same manner by adding an appropriate amount of a high-boiling solvent, oil or fat, or a mixture thereof, almost no scale buildup occurs in long heating tubes, and the present invention has been completed. It is something. The reason for this is not yet clear, but the non-volatile high-boiling solvent, oil, etc. form a film on the heat transfer surface of the heating tube, and this film effectively prevents scale adhesion. It is estimated to be.
尚、含水スラッジに対する高沸点溶剤又は油脂の好まし
い添加量は、該スラッジ量に対して１００％〜１％であ
る。つまり、添加量としては処理すべきスラッジ量と等
量乃至１／１００の範囲であれば、加熱管でのスケール
付着を効果的に防止できる。Incidentally, the preferable amount of the high boiling point solvent or fat added to the water-containing sludge is 100% to 1% based on the amount of the sludge. In other words, if the amount added is in the range of equivalent to 1/100 of the amount of sludge to be treated, scale adhesion on the heating tube can be effectively prevented.
本発明の含水スラッジの乾燥方法が上記構成となってい
るので、高沸点溶剤又は油脂を適量含む含水スラッジが
管状加熱管の他端から３０ｍ ／ｓｅｃ以上、好ましく
は１００ ｍ／ｓｅｃ以上という速度で固気分離室へ噴
出される際、管状加熱管中で水分等の揮発成分が短時間
のうちに蒸発する。Since the method for drying water-containing sludge of the present invention has the above-mentioned configuration, the water-containing sludge containing an appropriate amount of a high-boiling solvent or oil is dried from the other end of the tubular heating tube at a speed of 30 m/sec or more, preferably 100 m/sec or more. When ejected to the solid-gas separation chamber, volatile components such as moisture evaporate in a short time in the tubular heating tube.
その結果、なんらトラブルを生じることなく十分に乾燥
されたスラッジが継続して採取されることとなる。As a result, sufficiently dried sludge can be continuously collected without any trouble.
尚、分散溶液を管状加熱管の他端から３０ｍ／ｓｅｃ以
下の速度で噴出する条件下では、十分に水分あるいはそ
の他の揮発成分が蒸発しないので１．好ましくない。Note that under conditions where the dispersion solution is jetted from the other end of the tubular heating tube at a speed of 30 m/sec or less, water and other volatile components do not evaporate sufficiently. Undesirable.
又、高沸点溶剤としては、重油を用いることが好ましく
、油脂としては、ラノリン、魚油を使用することが好ま
しい。Further, as the high boiling point solvent, it is preferable to use heavy oil, and as the oil or fat, it is preferable to use lanolin or fish oil.
以上のように、本発明によれば、効率よく継続的に含水
スラッジを乾燥できる含水スラッジ、の乾燥方法を蝉供
することができた。As described above, according to the present invention, a method for drying water-containing sludge that can efficiently and continuously dry water-containing sludge has been provided.
〔実施例〕 。〔Example〕 .
本発明にがかる含水スラッジの乾燥方法の実施例を、図
面を参照して詳細に説明する。An embodiment of the method for drying water-containing sludge according to the present invention will be described in detail with reference to the drawings.
（イ）含水スラッジ排水に適当量の高沸点溶剤又は油脂
を添加したものを、原料タンク（１）に投入する。(a) Water-containing sludge waste water with an appropriate amount of high boiling point solvent or oil added is charged into the raw material tank (1).
（ロ）この溶液を、原料タンク（１）から原液定量供給
設備（２）を通じて管状加熱管（３）に定量的に供給し
て、この中で短時間に大部分の水分その他の揮発成分を
蒸発させ、前記加熱管（３）の他端から固気分離室（４
）に少なくとも３０ ｍ／ｓｅｃ、好ましくは１００
ｍ／ｓｅｃ以上、更に好ましくは２００ ｍ／ｓｅｃ以
上の噴出速度で噴出させる。このように含水スラッジ排
水中の揮発成分を短時間に蒸発除去させる。そして、バ
ッグフィルター（６）その他の方法により乾燥されたス
ラッジと蒸気とを分離し、乾燥スラッジは取出装置（５
）から、バッグフィルター（６）を通過した蒸気は回収
装置（７）から常法により回収される。なお、減圧装置
（８）により、固気分離室（４）を必要な減圧状態に保
持する。(b) This solution is quantitatively supplied from the raw material tank (1) through the stock solution quantitative supply equipment (2) to the tubular heating tube (3), in which most of the water and other volatile components are removed in a short time. The solid-gas separation chamber (4) is evaporated from the other end of the heating tube (3).
) at least 30 m/sec, preferably 100 m/sec
It is ejected at an ejection speed of at least m/sec, more preferably at least 200 m/sec. In this way, the volatile components in the water-containing sludge wastewater are evaporated and removed in a short time. Then, the dried sludge and steam are separated by a bag filter (6) or other method, and the dried sludge is separated by a take-out device (5).
), the vapor that has passed through the bag filter (6) is recovered from the recovery device (7) in a conventional manner. Note that the solid-gas separation chamber (4) is maintained at a required reduced pressure state by the pressure reducing device (8).
本発明において、乾燥されるスラッジは、下水道スラッ
ジ、醗酵廃液スラッジおよびその他一般のスラッジ並び
にスラッジ排水のいずれてあってもよい。In the present invention, the sludge to be dried may be any of sewage sludge, fermentation waste liquid sludge, other general sludge, and sludge drainage.
管状加熱管は単管式であり、長さと口径との比か１００
：１以上、好ましくは４００ ： １以上のものが用い
られる。The tubular heating tube is a single tube type, and the length to diameter ratio is 100.
:1 or more, preferably 400:1 or more.
固気分離室は減圧に保たれる。又、固気分離室ではサイ
クロン方式又はバッグフィルタ一方式等の公知の方法で
スラッジと蒸気とを分離し、乾燥スラッジは公知の方法
で系外に抜取り、蒸気も公知の方法により回収する。The solid-gas separation chamber is maintained at reduced pressure. In the solid-gas separation chamber, sludge and steam are separated using a known method such as a cyclone system or a single bag filter system, and dried sludge is extracted from the system using a known method, and steam is also recovered using a known method.
次に、本発明方法を用いて行った実験結果を示す。Next, the results of experiments conducted using the method of the present invention will be shown.
（実験例”■）
醗酵廃液スラッジを図面の原料タンク（１）に投入する
とともに、この醗酵廃液スラッジ１０部に対し洗毛時に
得られるラノリンを多量に含む廃液を２部の割合で投入
して混合し、これを加熱管（３）の加熱温度１５０°Ｃ
１操作真空度１００ ｔＯｒｒの処理条件で、２００
ｍ／ｓｅｃ以上の速度で固気分離室（４）に噴出した。(Experiment example "■) Fermentation waste liquid sludge was put into the raw material tank (1) shown in the drawing, and waste liquid containing a large amount of lanolin obtained during hair washing was put in at a ratio of 2 parts to 10 parts of this fermentation waste liquid sludge. Mix and heat this to 150°C in the heating tube (3).
Under the processing conditions of 1 operation vacuum level 100 tOrr, 200 tOrr
It was ejected into the solid-gas separation chamber (4) at a speed of m/sec or more.
固形分は、下部の取出装置（５）から取出されたが、加
熱管の内部にスケール付着が生じることもなく安定に乾
燥できた。The solid content was taken out from the take-out device (5) at the bottom, and it was possible to dry it stably without scale adhesion inside the heating tube.
この様にして乾燥された固形分は、多量の蛋白質、脂肪
分を含み飼料等として利用できた。The solid matter dried in this way contained a large amount of protein and fat and could be used as feed.
（実験例２）
実験例１と同量の醗酵廃液スラッジに対し、実験例１の
ラノリン含有廃液の代わりに魚油を多量に含む廃液を、
実験Ｍｌと同様の割合で添加して処理したところ、実験
例１と同様の結果が得られた。(Experiment Example 2) For the same amount of fermentation waste liquid sludge as in Experiment Example 1, a waste liquid containing a large amount of fish oil was used instead of the lanolin-containing waste liquid of Experiment Example 1,
When Ml was added at the same rate as in the experiment, the same results as in Experimental Example 1 were obtained.
（実験例３）
実験例１と同量の醗酵廃液スラッジに対し、実験例１の
ラノリン含有廃液の代わりにＡ重油を実験例１と同様の
割合で添加して、加熱管の加熱温度３００°Ｃ１操作真
空度５０ ｔｏｒｒで処理を行ったところ、原液に含有
する水分の大部分とＡ重油中の低沸点ないし中沸点成分
は同時に蒸発除去され、加熱管内部になんらスケール付
着を生ずることなく少量のへ重油高沸点成分を含む乾燥
品が得られた。(Experimental Example 3) To the same amount of fermentation waste liquid sludge as in Experimental Example 1, heavy oil A was added in the same proportion as in Experimental Example 1 instead of the lanolin-containing waste liquid in Experimental Example 1, and the heating temperature of the heating tube was raised to 300°. C1 operation When processing was carried out at a vacuum level of 50 torr, most of the water contained in the raw solution and the low to medium boiling point components in A heavy oil were simultaneously evaporated and removed, and a small amount was removed without any scale adhesion inside the heating tube. A dried product containing high-boiling components of heavy oil was obtained.
得られた乾燥品は燃料として利用が可能であった。The dried product obtained could be used as fuel.
（実験例４）
下水スラッジ１０部にへ重油１０部を添加し実験例３と
同様の条件で処理したところ、へ重油高沸分を少量含む
乾燥品が得られた。(Experimental Example 4) When 10 parts of heavy oil was added to 10 parts of sewage sludge and treated under the same conditions as in Experimental Example 3, a dry product containing a small amount of high-boiling oil content was obtained.
この乾燥品も燃料としての利用が可能であった。This dried product could also be used as fuel.
（実験例５）
実験例４の下水スラッジとＡ重油の混合物の代わりに、
下水スラッジ１．５部にＡ重油８．５部を加え多管効用
濃縮法等の方法により、スラッジ中の大部分の水を蒸発
留去した液、又はこれをスクリューデカンタ−等で固形
分濃度を高めた液を加熱管に供給することによって実験
例４と同様の処理をしても、良好な効果が得られた。(Experiment Example 5) Instead of the mixture of sewage sludge and A heavy oil in Experiment Example 4,
8.5 parts of heavy oil A is added to 1.5 parts of sewage sludge, and most of the water in the sludge is evaporated off using a method such as the multi-tube effect concentration method. Good effects were obtained even when the same treatment as in Experimental Example 4 was carried out by supplying a liquid with an increased temperature to the heating tube.
尚、以上の実施例では、高沸点溶剤として重油を用いた
が、これに限定されるものではなく、例えば、各種潤滑
油、重油と潤滑油の混合物、あるいはこれらの廃油など
であってもよい。In the above examples, heavy oil was used as the high boiling point solvent, but the solvent is not limited to this. For example, various lubricating oils, a mixture of heavy oil and lubricating oil, or waste oils thereof may be used. .
又、油脂としてラノリン、魚油を使用したが、もとより
これのみに限定されるものではなく、例えば、各種動植
物油脂、大豆油、サラダオイル、廃人ぷら油などいわゆ
る油脂類であればよい。In addition, although lanolin and fish oil are used as the fat and oil, it is not limited to these, for example, so-called fats and oils such as various animal and vegetable oils, soybean oil, salad oil, and crock pot oil may be used.
高沸点溶剤、油脂をスラッジに添加する方法は、図面に
示した実施例に限られるものではなく、原料タンクから
加熱管に入る途中に配管を通して添加するようにしても
よい。The method of adding the high boiling point solvent and oil to the sludge is not limited to the embodiment shown in the drawings, but may be added through the pipe on the way from the raw material tank to the heating pipe.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構成
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図は本発明にがかる含水スラッジの乾燥方法に用いる装
置の一実施例を表す全体概念図である。
（３）・・・・・・管状加熱管、（４）・・・・・・固
気分離室。The figure is an overall conceptual diagram showing one embodiment of the apparatus used in the method for drying water-containing sludge according to the present invention. (3)... Tubular heating tube, (4)... Solid-gas separation chamber.
Claims (1)
状加熱管（３）の一端から定量的に供給すると共に、前
記管状加熱管（３）の他端から３０ｍ／ｓｅｃ以上の噴
出速度で固気分離室（４）内へ放出することにより、こ
の分散溶液中の揮発成分を蒸発させて前記含水スラッジ
を脱水・脱溶剤して乾燥する含水スラッジの乾燥方法。 ２、含水スラッジに油脂を適量添加し、これを管状加熱
管（３）の一端から定量的に供給すると共に、前記管状
加熱管（３）の他端から３０ｍ／ｓｅｃ以上の噴出速度
で固気分離室（４）内へ放出することにより、この分散
溶液中の揮発成分を蒸発させて前記含水スラッジを脱水
・脱溶剤して乾燥する含水スラッジの乾燥方法。 ３、含水スラッジに高沸点溶剤又は油脂を添加したもの
の水分の大部分を留出した後、これを前記管状加熱管（
３）に供給する請求項１又は２記載の含水スラッジの乾
燥方法。 ４、含水スラッジに高沸点溶剤又は油脂を添加したもの
を遠心分離その他の方法で濃縮液とし、しかる後、これ
を前記管状加熱管（３）に供給する請求項１又は２記載
の含水スラッジの乾燥方法。[Claims] 1. Add an appropriate amount of a high boiling point solvent to the water-containing sludge, supply it quantitatively from one end of the tubular heating tube (3), and feed it 30 m/min from the other end of the tubular heating tube (3). A method for drying water-containing sludge, in which the volatile components in the dispersion solution are evaporated by discharging the water-containing sludge into the solid-gas separation chamber (4) at a jetting speed of sec or more, thereby dehydrating and removing solvent from the water-containing sludge. 2. Add an appropriate amount of oil and fat to the water-containing sludge, quantitatively supply it from one end of the tubular heating tube (3), and eject solid gas from the other end of the tubular heating tube (3) at a speed of 30 m/sec or more. A method for drying a water-containing sludge, in which the volatile components in the dispersion solution are evaporated by discharging the water-containing sludge into a separation chamber (4), and the water-containing sludge is dehydrated, desolventized, and dried. 3. After distilling off most of the water from the water-containing sludge with a high boiling point solvent or fat added, it is passed through the tubular heating tube (
3) The method for drying a water-containing sludge according to claim 1 or 2, which is supplied to the method. 4. The water-containing sludge according to claim 1 or 2, wherein the water-containing sludge is made into a concentrated liquid by centrifugation or other methods by adding a high boiling point solvent or oil, and then this is supplied to the tubular heating tube (3). Drying method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332817A JPH04197500A (en) | 1990-11-28 | 1990-11-28 | Method for drying water containing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332817A JPH04197500A (en) | 1990-11-28 | 1990-11-28 | Method for drying water containing sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04197500A true JPH04197500A (en) | 1992-07-17 |
Family
ID=18259137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332817A Pending JPH04197500A (en) | 1990-11-28 | 1990-11-28 | Method for drying water containing sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04197500A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1141177A4 (en) * | 1998-12-17 | 2005-04-27 | Texaco Development Corp | Gasification of biosludge |
| WO2011005883A3 (en) * | 2009-07-07 | 2011-06-16 | Nowa Technology, Inc. | Wastewater sludge processing system |
-
1990
- 1990-11-28 JP JP2332817A patent/JPH04197500A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1141177A4 (en) * | 1998-12-17 | 2005-04-27 | Texaco Development Corp | Gasification of biosludge |
| WO2011005883A3 (en) * | 2009-07-07 | 2011-06-16 | Nowa Technology, Inc. | Wastewater sludge processing system |
| CN102471111A (en) * | 2009-07-07 | 2012-05-23 | 诺华工艺有限公司 | Wastewater sludge processing system |
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