JPH1180763A - Production of solid fuel from sewage sludge - Google Patents
Production of solid fuel from sewage sludgeInfo
- Publication number
- JPH1180763A JPH1180763A JP9259393A JP25939397A JPH1180763A JP H1180763 A JPH1180763 A JP H1180763A JP 9259393 A JP9259393 A JP 9259393A JP 25939397 A JP25939397 A JP 25939397A JP H1180763 A JPH1180763 A JP H1180763A
- Authority
- JP
- Japan
- Prior art keywords
- solid fuel
- sewage sludge
- sludge
- mixed
- producing
- 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
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、下水汚泥の固形燃
料化に係り、特に、下水処理場で下水を処理した後発生
する下水汚泥を、全量固形化して燃料として有効利用す
るための固形燃料の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the conversion of sewage sludge to solid fuel, and more particularly to a solid fuel for solidifying the entire amount of sewage sludge generated after treating sewage in a sewage treatment plant and effectively utilizing it as fuel. And a method for producing the same.
【０００２】[0002]
【従来の技術】従来、下水汚泥の処分は、通常、 そ
のまま埋立て処分、 焼却処理して灰は埋立て処分、
コンポスト処理して緑農地利用、が主なものである
が、年々下水道の普及率が高くなり発生汚泥量も急増す
る中で、都市化や地域開発などにより焼却炉の建設や処
分地確保が困難になっている状況にある。また、一般廃
棄物や産業廃棄物として大量に排出されている廃プラス
チックは、近年その処理処分が社会問題として取り上げ
られ排出が規制されつつある。2. Description of the Related Art Conventionally, sewage sludge is usually disposed of directly as landfill, and incinerated ash is landfilled.
The main method is composting and use of green agricultural land, but as the sewerage penetration rate increases year by year and the amount of generated sludge increases rapidly, it is difficult to secure incinerator construction and disposal sites due to urbanization and regional development. It is in the situation. In addition, in recent years, the disposal and disposal of waste plastics, which are discharged in large quantities as general wastes and industrial wastes, have been taken up as a social problem and their discharge has been regulated.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、下水
汚泥の持つ可燃成分である有機分の持つエネルギーを有
効利用することによって、化石燃料の使用量の削減と地
球温暖化主要因である二酸化炭素の排出量を削減するこ
とができると共に、廃プラスチックが持つ高いエネルギ
ーを有効利用することができる下水汚泥からの固形燃料
の製造方法を提供することを課題とする。SUMMARY OF THE INVENTION Accordingly, the present invention reduces the use of fossil fuels and reduces carbon dioxide, which is a major factor in global warming, by effectively utilizing the energy of organic components, which are combustible components of sewage sludge. An object of the present invention is to provide a method for producing a solid fuel from sewage sludge, which can reduce the amount of carbon emissions and can effectively use the high energy of waste plastic.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、下水汚泥を乾燥した後、生石灰を混合
してペレット状に成形することを特徴とする固形燃料の
製造方法としたものであり、また、本発明では、下水汚
泥を乾燥した後に生石灰を混合し、さらに粉砕した廃プ
ラスチックを混合した後に成形することを特徴とする高
発熱量の固形燃料の製造方法としたものである。前記固
形燃料の製造方法において、下水汚泥の乾燥は、熱源と
して自己製造した固形燃料を使用することができ、この
場合、固形燃料の燃焼により発生する焼却灰を、製造す
る固形燃料に混合することができ、焼却灰残渣を発生さ
せない製造システムとすることができる。本発明の方法
で製造した固形燃料は、保存や運搬が容易なため、集中
的に大規模なエネルギー施設での利用も可能であり、そ
の結果、汚泥の最終処分問題をも解決することができ、
更に廃プラスチックを粉砕（３〜２０ｍｍ程度）して下
水汚泥に混合することによって高発熱量のより実用的な
固形燃料を製造方法することができる。Means for Solving the Problems In order to solve the above problems, the present invention provides a method for producing a solid fuel, comprising drying sewage sludge, mixing with quick lime and forming into pellets. Further, in the present invention, a method for producing a solid fuel having a high calorific value, characterized in that quick lime is mixed after drying sewage sludge, and then mixed after further pulverized waste plastic is formed. is there. In the method for producing a solid fuel, drying of the sewage sludge can use a self-produced solid fuel as a heat source. In this case, incineration ash generated by combustion of the solid fuel is mixed with the solid fuel to be produced. And a production system that does not generate incineration ash residues can be provided. Since the solid fuel produced by the method of the present invention can be easily stored and transported, it can be intensively used in large-scale energy facilities, and as a result, the problem of sludge final disposal can also be solved. ,
Further, a more practical solid fuel having a high calorific value can be produced by crushing waste plastic (about 3 to 20 mm) and mixing it with sewage sludge.
【０００５】[0005]
【発明の実施の形態】以下、本発明を図面を用いて詳細
に説明する。図１は、本発明の固形燃料の製造方法の一
例を示す基本工程図である。図１において、下水は下水
処理場２にて処理され、浄化した水は川や海に放流され
る。処理過程で残った固形物は下水汚泥となり、通常脱
水された状態で約８０％の水分、約１４〜１６％の有機
分、約４〜６％の無機分から成り立っている。脱水され
た汚泥１は、本システムの乾燥設備３により大半の水分
を蒸発され、生石灰が添加（脱水汚泥に対して０．５％
程度）・混合されて、残留水分との水和反応による消石
灰の生成、また、反応熱による水分の蒸発が行われる。
これら一連の工程を経て適度の水分（２０％程度）を持
ち、消石灰を含んだ乾燥汚泥は、圧縮成形設備４により
ダイスより、射出されてペレット状（棒状）になる。ペ
レットの径は通常１０〜２０ｍｍ、長さは２０〜５０ｍ
ｍ程度である。これらのペレット状に成形された汚泥
は、さらに乾燥設備５で水分調整され、水分５％程度の
固形燃料６となる。なお、この固形燃料６の発熱量は、
３，０００〜３，５００ｋｃａｌ／ｋｇあり、石炭の約
半分程度の発熱量を有する固形燃料であり、乾燥と消石
灰処理により、殺菌、消臭、腐敗の防止効果を持ってい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a basic process chart showing an example of the method for producing a solid fuel of the present invention. In FIG. 1, sewage is treated in a sewage treatment plant 2, and purified water is discharged into a river or sea. The solids remaining in the treatment process are sewage sludge, usually consisting of about 80% moisture, about 14-16% organic, and about 4-6% inorganic when dehydrated. Most of the dewatered sludge 1 is evaporated by the drying equipment 3 of the present system, and quicklime is added (0.5% to the dewatered sludge).
The mixture is mixed, and slaked lime is generated by a hydration reaction with residual moisture, and moisture is evaporated by heat of reaction.
Dry sludge having appropriate moisture (about 20%) through the series of steps and containing slaked lime is injected from a die by the compression molding equipment 4 into pellets (rods). The diameter of the pellet is usually 10 to 20 mm, and the length is 20 to 50 m
m. The sludge formed into these pellets is further adjusted in water content in the drying equipment 5 to become a solid fuel 6 having a water content of about 5%. The heat value of the solid fuel 6 is
It is a solid fuel having a calorific value of about 3,000 to 3,500 kcal / kg and about half that of coal, and has a sterilizing, deodorizing, and rot preventing effect by drying and slaked lime treatment.
【０００６】図２は、本発明の固形燃料の製造方法の他
の例の基本工程図である。図２において、図１の工程図
に加えて、乾燥後の下水汚泥に破砕９（３〜２０ｍｍ程
度）した廃プラスチック８を混合１０するもので、その
後、圧縮成形４され廃プラスチック混合下水汚泥固形燃
料６となる。廃プラスチックの混合率は通常２０〜５０
％で、この時の発熱量は４，５００〜６，０００ｋｃａ
ｌ／ｋｇになり、石炭に近い発熱量を有する固形燃料と
なる。本発明に用いる廃プラスチックとしては、容器包
装用プラスチック、農業用プラスチック、廃家電品や廃
車からのプラスチック等であり、成分としては、ポリプ
ロピレン、ポリスチレン、ポリエチレン、ポリウレタ
ン、ポリ塩化ビニル樹脂やＡＢＳ（アクリルニトリルブ
タジカンスチレン樹脂）等がある。FIG. 2 is a basic process diagram of another example of the method for producing a solid fuel according to the present invention. In FIG. 2, in addition to the process diagram of FIG. 1, a waste plastic 8 crushed 9 (about 3 to 20 mm) is mixed 10 with dried sewage sludge. Fuel 6 The mixing ratio of waste plastic is usually 20-50
%, And the calorific value at this time is 4,500 to 6,000 kca
1 / kg, which is a solid fuel having a calorific value close to that of coal. Examples of the waste plastic used in the present invention include plastic for containers and packaging, agricultural plastic, plastic from waste home appliances and end-of-life vehicles, and the like. Examples of components include polypropylene, polystyrene, polyethylene, polyurethane, polyvinyl chloride resin, and ABS (acrylic). Nitrile butadican styrene resin).
【０００７】図３は、本発明の固形燃料の製造方法を用
いる下水汚泥固形燃料化システムの全体工程図である。
図３において、下水処理場からの脱水汚泥１１は汚泥ホ
ッパ１２に受け入れられ、次に乾燥機１３に送られて含
水率２５％程度に乾燥される。この乾燥機１３は、供給
された脱水汚泥１１を粉砕しながら乾燥する特殊な構造
を持ったもので、出来上がった固形燃料を燃料としたボ
イラー２３から発生する高温蒸気２４を熱源にしてい
る。なお、下水処理場で発生する消化ガス、燃料油など
を燃料とすること及び近傍にあるごみ焼却場からの高温
蒸気を利用することもできる。高温蒸気２４は乾燥機１
３で汚泥加熱した後、冷えて凝縮水２５となり、ボイラ
ー２３へ戻されボイラー用水として再使用される。含水
率２５％程度に乾燥された汚泥１４は、混合機１７に送
られ、生石灰サイロ１５からの生石灰１６と混合され
る。FIG. 3 is an overall process diagram of a sewage sludge solid fuel conversion system using the solid fuel production method of the present invention.
In FIG. 3, dewatered sludge 11 from a sewage treatment plant is received by a sludge hopper 12, and then sent to a dryer 13 where it is dried to a water content of about 25%. The dryer 13 has a special structure for drying the supplied dewatered sludge 11 while crushing it, and uses a high-temperature steam 24 generated from a boiler 23 using the completed solid fuel as a fuel. In addition, it is also possible to use digestive gas, fuel oil, and the like generated in the sewage treatment plant as fuel, and to use high-temperature steam from a nearby refuse incineration plant. The high-temperature steam 24 is supplied to the dryer 1
After the sludge is heated in step 3, the condensed water 25 is cooled and returned to the boiler 23 to be reused as boiler water. The sludge 14 dried to a water content of about 25% is sent to a mixer 17 and mixed with quicklime 16 from a quicklime silo 15.
【０００８】乾燥汚泥１４と生石灰１６の混合重量比
は、乾燥汚泥中の水分と生石灰１６が消石灰となり、そ
の時の反応熱により乾燥汚泥中の水分が蒸発し、その結
果、出来た生石灰混合乾燥汚泥２２の残留水分が２０％
前後になるように設定されている。その時の乾燥汚泥１
４と生石灰１６の混合重量比は概ね２７：１であり、脱
水汚泥と生石灰１６の混合重量比に換算すると概ね１０
０：１である。混合された乾燥汚泥１４と生石灰１６は
熟成機１８に送られ、水和反応が完了するまで約１時間
程度攪拌滞留させる。反応が完了し、含水率が２０％前
後になった生石灰混合乾燥汚泥２２は、異物除去スクリ
ーン２０で粒径の大きな（５ｍｍ以上）石などを取り除
いた後、乾燥汚泥サイロ２１に貯蔵される。乾燥汚泥サ
イロ２１から切り出された生石灰混合乾燥汚泥２２は、
圧縮成形機４７でペレット径１０〜２０ｍｍ、長さ２０
〜５０ｍｍ程度に圧縮成形される。The mixing weight ratio of the dry sludge 14 and the quicklime 16 is such that the water in the dry sludge and the quicklime 16 become slaked lime, and the heat of the reaction evaporates the water in the dry sludge. As a result, the quicklime mixed dry sludge is formed. 20% residual moisture of 22
It is set to be before and after. Dry sludge at that time 1
4 and the quicklime 16 have a mixed weight ratio of approximately 27: 1, which is approximately 10 when converted to the mixed weight ratio of the dehydrated sludge and the quicklime 16.
0: 1. The mixed dried sludge 14 and quick lime 16 are sent to the ripening machine 18 and are stirred and retained for about one hour until the hydration reaction is completed. After the reaction is completed, the quicklime mixed dry sludge 22 having a water content of about 20% is stored in the dry sludge silo 21 after removing large-diameter (5 mm or more) stones and the like with the foreign matter removing screen 20. The quicklime mixed dry sludge 22 cut out from the dry sludge silo 21 is:
Pellet diameter 10-20mm, length 20 by compression molding machine 47
It is compression molded to about 50 mm.
【０００９】さらに出来上がったペレット４８の水分
を、保存性や臭気の低減など燃料として品質を向上させ
るために、水分調整用乾燥機５０で５％程度に乾燥す
る。この水分調整用乾燥機５０の熱源は、固形燃料ボイ
ラー２３からの高温蒸気２４による。高温蒸気２４は水
分調整用乾燥機５０でペレット４８を加熱した後、冷え
て凝縮水２５となり、ボイラー２３へ戻されボイラー用
水として再使用される。ペレット４８は乾燥されて固形
燃料５１となり、固形燃料サイロ５２に貯蔵される。固
形燃料サイロ５２からは、固形燃料ボイラー２３の燃料
として、その一部が切り出される。その他の固形燃料５
１は使用先へ輸送される。Further, in order to improve the quality of the fuel as a fuel such as preservability and reduction of odor, the water content of the pellets 48 is dried to about 5% by a water content adjusting dryer 50. The heat source of the moisture adjusting dryer 50 is high-temperature steam 24 from the solid fuel boiler 23. The high-temperature steam 24 heats the pellets 48 by the moisture adjusting dryer 50 and then cools down to condensed water 25, which is returned to the boiler 23 and reused as boiler water. The pellet 48 is dried into a solid fuel 51 and stored in the solid fuel silo 52. A part of the solid fuel silo 52 is cut out as fuel for the solid fuel boiler 23. Other solid fuel 5
1 is transported to the place of use.
【００１０】乾燥機１３からは脱水汚泥１１の乾燥によ
り、脱水汚泥重量の約７５％に相当する水分が臭気と共
に乾燥機排ガス２８として排気される。また、混合機１
７からは、反応機により乾燥汚泥１４中の水分が混合機
排ガス２９として、さらに、熟成機１８からも、反応熱
により乾燥汚泥１４中の水分が熟成機排ガス３０として
排気される。なお、熟成機排ガス３０中には混合粉末の
微粒子が同伴するため、熟成機１８の排気口にバグフィ
ルター１９を設置してそれを除去する構造になってい
る。同様に水分調整用乾燥機５０にわずかな水分（脱水
汚泥の４〜５％）が臭気と共に乾燥機排ガス４９として
排気される。乾燥機排ガス２８、４９、混合機排ガス２
９、及び熟成機排ガス３０は集められ、ベンチュリース
クラバー２６で、下水処理場からの処理水にて水洗・冷
却され、水蒸気の凝縮やアンモニアガスなどの水溶成分
の除去が行われる。ベンチュリースクラバー２６を出た
排ガスは、排ガスファン２７で昇圧し、一部は乾燥機用
送気３１として乾燥機１３に送られ、残りは排ガス３２
として脱臭洗浄塔３２へ送られる。By drying the dewatered sludge 11, moisture equivalent to about 75% of the weight of the dewatered sludge is exhausted from the dryer 13 together with the odor as the exhaust gas 28 of the dryer. Mixer 1
From 7, the moisture in the dried sludge 14 is exhausted by the reactor as the mixer exhaust gas 29, and the moisture in the dried sludge 14 is also exhausted from the ripening machine 18 by the reaction heat as the ripening machine exhaust gas 30. Since fine particles of the mixed powder are entrained in the exhaust gas 30 of the ripening machine, a bag filter 19 is provided at the exhaust port of the ripening machine 18 to remove the same. Similarly, a small amount of moisture (4 to 5% of the dewatered sludge) is exhausted to the moisture adjusting dryer 50 as the dryer exhaust gas 49 together with the odor. Dryer exhaust gas 28, 49, mixer exhaust gas 2
The exhaust gas 9 and the aging machine exhaust gas 30 are collected, washed and cooled with treated water from a sewage treatment plant in a venturi scrubber 26, and condensed water vapor and removed water-soluble components such as ammonia gas. The exhaust gas exiting the venturi scrubber 26 is pressurized by an exhaust gas fan 27, a part of the exhaust gas is sent to the dryer 13 as a dryer air supply 31, and the rest is exhaust gas 32.
And sent to the deodorizing and washing tower 32.
【００１１】脱臭洗浄塔３３では、薬液循環ポンプ３４
により酸性薬液が循環しており、排ガス３２の脱臭成分
を洗浄除去している。脱臭洗浄塔３３を出た排ガスは、
ミストセパレータ３５で飛沫ミストを除去した後、排気
ファン３６で昇圧され活性炭吸着塔３７で残留微量臭気
成分などを除去し、無公害なガスとして大気に排気３８
ささる。ベンチュリースクラバー排水４０、及び脱臭洗
浄塔排水４１は、排水タンク３９に集められ中和処理し
た後、その排水４２は下水処理場へ返送され、下水と共
に処理される。なお、脱臭洗浄塔３３を出た排ガス３２
を、触媒燃焼脱臭機５４を通して燃焼脱臭し、無公害な
ガスとして大気に排気する方法もある。In the deodorizing and washing tower 33, a chemical solution circulating pump 34
Accordingly, the acidic chemical solution is circulated, and the deodorizing components of the exhaust gas 32 are washed and removed. The exhaust gas that has left the deodorizing and washing tower 33 is
After removing the mist by the mist separator 35, the pressure is increased by the exhaust fan 36, the residual trace odor component is removed by the activated carbon adsorption tower 37, and the mist is exhausted to the atmosphere as a non-polluting gas 38.
Monkey The venturi scrubber wastewater 40 and the deodorizing and cleaning tower wastewater 41 are collected in a wastewater tank 39 and neutralized, and then the wastewater 42 is returned to a sewage treatment plant and treated with sewage. Note that the exhaust gas 32 exiting the deodorizing and washing tower 33
Is burned and deodorized through a catalytic combustion deodorizer 54 and exhausted to the atmosphere as a non-polluting gas.
【００１２】図４は、本発明の別の固形燃料の製造方法
を用いる廃プラスチック混合下水汚泥固形燃料化システ
ムの全体工程図である。図４においては、図３の下水汚
泥固形燃料化システムの工程図に付け加え、出来上がっ
た固形燃料５１の発熱量を高めるために廃プラスチック
４３を破砕機４５で約５ｍｍ以下に破砕し、廃プラ混合
機５３で生石灰混合乾燥汚泥２２と混合する。この混合
比率により、また廃プラスチックの種類により出来上が
った固形燃料５１の発熱量は異なるが、概ね２０〜５０
％の混合比率で４，５００〜６，０００ｋｃａｌ／ｋｇ
となる。なお、廃プラスチック４３の混合比率の高い場
合は、必要に応じて圧縮成形機４７に高温蒸気２４を供
給して加熱することにより、緻密な固形燃料としての成
形が容易になる。FIG. 4 is an overall process diagram of a waste plastic mixed sewage sludge solidification system using another solid fuel production method of the present invention. In FIG. 4, in addition to the process diagram of the sewage sludge solid fuel conversion system in FIG. 3, the waste plastic 43 is crushed to about 5 mm or less by a crusher 45 in order to increase the calorific value of the completed solid fuel 51. The mixed with the quicklime mixed dry sludge 22 is mixed by the machine 53. Although the calorific value of the completed solid fuel 51 differs depending on the mixing ratio and the type of waste plastic, it is generally 20 to 50.
%, 4,500 to 6,000 kcal / kg
Becomes In addition, when the mixing ratio of the waste plastic 43 is high, the high-temperature steam 24 is supplied to the compression molding machine 47 as necessary to heat the compression molding machine 47, thereby facilitating molding as a dense solid fuel.
【００１３】なお、固形燃料ボイラー２３で燃焼した固
形燃料５１の焼却灰５５は、乾燥汚泥サイロ２１に戻さ
れる。戻された焼却灰５５は、固形燃料５１と適当に混
ざるが、廃プラ混合機５３にて破砕された廃プラスチッ
ク４３と均質に混合される。この様な方法により、本シ
ステムからは、残渣としての焼却灰５５は発生しないが
製造される固形燃料５１の発熱量はわずかに少なくな
る。その値は固形燃料５１の発熱量が高い場合は３％程
度、低い場合で１２％程度である。The incinerated ash 55 of the solid fuel 51 burned in the solid fuel boiler 23 is returned to the dry sludge silo 21. The returned incinerated ash 55 is appropriately mixed with the solid fuel 51, but is uniformly mixed with the waste plastic 43 crushed by the waste plastic mixer 53. According to such a method, the incineration ash 55 as a residue is not generated from the present system, but the calorific value of the produced solid fuel 51 is slightly reduced. The value is about 3% when the calorific value of the solid fuel 51 is high, and is about 12% when the calorific value of the solid fuel 51 is low.
【００１４】[0014]
【発明の効果】本発明は年々増え続ける下水汚泥を、乾
燥及び生石灰処理、及び廃プラスチックの混合により、
有効活用できる固形燃料を製造するためのシステムであ
り、次の効果を奏することができる。 下水汚泥を乾燥と生石灰処理により臭気や腐敗を防
止し、固形燃料として長期間貯蔵できる。 処理処分に苦慮している廃プラスチックを大量処理
でき、燃料として有効活用できる。 下水汚泥の焼却炉や埋立て処分地が不要となる。According to the present invention, sewage sludge, which is increasing year by year, can be treated by drying and quick lime treatment and mixing of waste plastics.
This is a system for producing a solid fuel that can be used effectively, and has the following effects. The sewage sludge is dried and calcined to prevent odor and rot, and can be stored as solid fuel for a long time. Waste plastics that are difficult to dispose of can be processed in large quantities and can be effectively used as fuel. Elimination of incinerators and landfills for sewage sludge is unnecessary.
【図１】本発明の固形燃料の製造方法の一例を示す基本
工程図。FIG. 1 is a basic process chart showing an example of a method for producing a solid fuel of the present invention.
【図２】本発明の固形燃料の製造方法の他の例を示す基
本工程図。FIG. 2 is a basic process chart showing another example of the method for producing a solid fuel according to the present invention.
【図３】本発明の製造方法を用いた下水汚泥固形燃料化
システムの全体工程図。FIG. 3 is an overall process diagram of a sewage sludge solidification system using the production method of the present invention.
【図４】本発明の製造方法を用いた廃プラスチック混合
下水汚泥固形燃料化システムの全体工程図。FIG. 4 is an overall process diagram of a waste plastic mixed sewage sludge solidification system using the production method of the present invention.
１：脱水下水汚泥、２：下水処理場、３：乾燥設備、
４：圧縮成形設備、５：乾燥設備、６：下水汚泥固形燃
料、７：排ガス・排水処理設備、８：廃プラスチック、
９：破砕設備、１０：混合設備、１１：脱水汚泥、１
２：汚泥ホッパ、１３：主乾燥機、１４：乾燥汚泥、１
５：生石灰サイロ、１６：生石灰、１７：混合機、１
８：熟成機、１９：バグフィルター、２０：異物除去ス
クリーン、２１：乾燥汚泥サイロ、２２：生石灰混合乾
燥汚泥、２３：固形燃料ボイラー、２４：高温蒸気、２
５：凝縮水、２６：ベンチュリースクラバー、２７：排
ガスファン、２８：乾燥排ガス、２９：混合機排ガス、
３０：熟成機排ガス、３１：乾燥機用送気、３２：排ガ
ス、３３：脱臭洗浄塔、３４：薬液循環ポンプ、３５：
ミストセパレータ、３６：排気ファン、３７：活性炭吸
着塔、３８：排気、３９：排水タンク、４０：ベンチュ
リースクラバー排水、４１：脱臭洗浄塔排水、４２：排
水、４３：廃プラスチック、４４：廃プラスチックサイ
ロ、４５：破砕機、４６：汚泥廃プラスチック混合機、
４７：圧縮成形機、４８：ペレット、４９：乾燥機排ガ
ス、５０：水分調整用乾燥機、５１：固形燃料、５２：
固形燃料サイロ、５３：廃プラ混合機、５４：触媒燃焼
脱臭機、５５：焼却灰、1: dewatered sewage sludge, 2: sewage treatment plant, 3: drying equipment,
4: compression molding equipment, 5: drying equipment, 6: sewage sludge solid fuel, 7: exhaust gas and wastewater treatment equipment, 8: waste plastic,
9: crushing equipment, 10: mixing equipment, 11: dehydrated sludge, 1
2: Sludge hopper, 13: Main dryer, 14: Dry sludge, 1
5: quicklime silo, 16: quicklime, 17: mixer, 1
8: Aging machine, 19: Bag filter, 20: Foreign matter removal screen, 21: Dry sludge silo, 22: Quicklime mixed dry sludge, 23: Solid fuel boiler, 24: High temperature steam, 2
5: Condensed water, 26: Venturi scrubber, 27: Exhaust gas fan, 28: Dry exhaust gas, 29: Mixer exhaust gas,
30: exhaust gas from ripening machine, 31: air supply for dryer, 32: exhaust gas, 33: deodorizing washing tower, 34: chemical liquid circulation pump, 35:
Mist separator, 36: exhaust fan, 37: activated carbon adsorption tower, 38: exhaust, 39: drain tank, 40: venturi scrubber drain, 41: deodorizing washing tower drain, 42: drain, 43: waste plastic, 44: waste plastic silo , 45: crusher, 46: sludge waste plastic mixer,
47: compression molding machine, 48: pellet, 49: dryer exhaust gas, 50: moisture adjustment dryer, 51: solid fuel, 52:
Solid fuel silo, 53: waste plastic mixer, 54: catalytic combustion deodorizer, 55: incineration ash,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 横尾 道隆 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Michitaka Yokoo 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Corporation
Claims (4)
てペレット状に成形することを特徴とする固形燃料の製
造方法。1. A method for producing a solid fuel, comprising drying sewage sludge, mixing quicklime and forming the mixture into pellets.
し、さらに粉砕した廃プラスチックを混合した後に成形
することを特徴とする高発熱量の固形燃料の製造方法。2. A method for producing a solid fuel having a high calorific value, which comprises mixing quicklime after drying sewage sludge, further mixing crushed waste plastic, and then molding.
製造した固形燃料を使用することを特徴とする請求項１
又は２記載の固形燃料の製造方法。3. The drying of the sewage sludge uses a self-produced solid fuel as a heat source.
Or the method for producing a solid fuel according to 2.
いて、自己製造した固形燃料を使用した時に発生する焼
却灰を、製造する固形燃料に混合することを特徴とする
固形燃料の製造方法。4. The method for producing a solid fuel according to claim 3, wherein incinerated ash generated when using the self-produced solid fuel is mixed with the solid fuel to be produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9259393A JPH1180763A (en) | 1997-09-09 | 1997-09-09 | Production of solid fuel from sewage sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9259393A JPH1180763A (en) | 1997-09-09 | 1997-09-09 | Production of solid fuel from sewage sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1180763A true JPH1180763A (en) | 1999-03-26 |
Family
ID=17333518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9259393A Pending JPH1180763A (en) | 1997-09-09 | 1997-09-09 | Production of solid fuel from sewage sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1180763A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280498B1 (en) | 1999-09-01 | 2001-08-28 | Kobe Steel, Ltd. | Synthetic resin fuel for making iron and method for making iron |
| KR20010087835A (en) * | 2001-06-29 | 2001-09-26 | 선윤관 | Manufacturing method of refuse derived fuel using wet sludge |
| JP2001329279A (en) * | 2000-05-19 | 2001-11-27 | Mitsubishi Materials Corp | Apparatus for preventing rise in temperature of solidified refuse fuel |
| KR20030003159A (en) * | 2002-11-19 | 2003-01-09 | 김준영 | The Apparatus of Manufacturing Refuse Derived Fuel (R.D.F) Using Sewage Sludge & Refuse Synthetic Resin, and the Manufacturing Process |
| KR100691504B1 (en) | 2005-11-05 | 2007-04-16 | 강점룡 | The recycle energy combustor that produce fuel for burning with heat of combustion |
| WO2007142161A1 (en) * | 2006-06-05 | 2007-12-13 | Kabushiki Kaisha Nakata | Solid fuel and process for producing the same |
| JP2009226354A (en) * | 2008-03-25 | 2009-10-08 | Jfe Engineering Corp | Method for treating organic sludge |
| KR101178377B1 (en) | 2009-09-22 | 2012-09-07 | 주식회사 전주페이퍼 | the method of transferring biomass fuel |
| KR101229005B1 (en) | 2010-06-30 | 2013-02-04 | 장민훈 | Arraratus of manufacturing fuel and manufacturing method of fuel using sludge |
| JP2014234475A (en) * | 2013-06-04 | 2014-12-15 | 株式会社Ihi | Method and apparatus for producing solid fuel containing biomass and plastic |
| JP2015044919A (en) * | 2013-08-27 | 2015-03-12 | 株式会社小熊鉄工所 | Production method of solid fuel from sewage sludge and device therefor |
| JP2017132828A (en) * | 2016-01-25 | 2017-08-03 | 国立研究開発法人農業・食品産業技術総合研究機構 | Manufacturing method of biomass fuel body and biomass fuel body manufactured by the method |
| JP2019147881A (en) * | 2018-02-27 | 2019-09-05 | 王子ホールディングス株式会社 | Apparatus for converting sludge into fuel, system for converting sludge into fuel, sludge fuel utilization type factory and method for producing solid fuel |
| JP2020169743A (en) * | 2019-04-01 | 2020-10-15 | 王子ホールディングス株式会社 | Heat recovery device from sludge, heat recovery system from sludge, and factory utilizing heat recovered from sludge |
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-
1997
- 1997-09-09 JP JP9259393A patent/JPH1180763A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280498B1 (en) | 1999-09-01 | 2001-08-28 | Kobe Steel, Ltd. | Synthetic resin fuel for making iron and method for making iron |
| JP2001329279A (en) * | 2000-05-19 | 2001-11-27 | Mitsubishi Materials Corp | Apparatus for preventing rise in temperature of solidified refuse fuel |
| KR20010087835A (en) * | 2001-06-29 | 2001-09-26 | 선윤관 | Manufacturing method of refuse derived fuel using wet sludge |
| KR20030003159A (en) * | 2002-11-19 | 2003-01-09 | 김준영 | The Apparatus of Manufacturing Refuse Derived Fuel (R.D.F) Using Sewage Sludge & Refuse Synthetic Resin, and the Manufacturing Process |
| KR100691504B1 (en) | 2005-11-05 | 2007-04-16 | 강점룡 | The recycle energy combustor that produce fuel for burning with heat of combustion |
| WO2007142161A1 (en) * | 2006-06-05 | 2007-12-13 | Kabushiki Kaisha Nakata | Solid fuel and process for producing the same |
| JP2009226354A (en) * | 2008-03-25 | 2009-10-08 | Jfe Engineering Corp | Method for treating organic sludge |
| KR101178377B1 (en) | 2009-09-22 | 2012-09-07 | 주식회사 전주페이퍼 | the method of transferring biomass fuel |
| KR101229005B1 (en) | 2010-06-30 | 2013-02-04 | 장민훈 | Arraratus of manufacturing fuel and manufacturing method of fuel using sludge |
| JP2014234475A (en) * | 2013-06-04 | 2014-12-15 | 株式会社Ihi | Method and apparatus for producing solid fuel containing biomass and plastic |
| JP2015044919A (en) * | 2013-08-27 | 2015-03-12 | 株式会社小熊鉄工所 | Production method of solid fuel from sewage sludge and device therefor |
| JP2017132828A (en) * | 2016-01-25 | 2017-08-03 | 国立研究開発法人農業・食品産業技術総合研究機構 | Manufacturing method of biomass fuel body and biomass fuel body manufactured by the method |
| JP2019147881A (en) * | 2018-02-27 | 2019-09-05 | 王子ホールディングス株式会社 | Apparatus for converting sludge into fuel, system for converting sludge into fuel, sludge fuel utilization type factory and method for producing solid fuel |
| JP2020169743A (en) * | 2019-04-01 | 2020-10-15 | 王子ホールディングス株式会社 | Heat recovery device from sludge, heat recovery system from sludge, and factory utilizing heat recovered from sludge |
| JP2020172654A (en) * | 2020-06-26 | 2020-10-22 | 王子ホールディングス株式会社 | Apparatus for converting sludge into fuel, system for converting sludge into fuel, sludge fuel utilization type factory and method for producing solid fuel |
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