JP3305205B2 - Waste plastic gasification power generation equipment - Google Patents
Waste plastic gasification power generation equipmentInfo
- Publication number
- JP3305205B2 JP3305205B2 JP19899196A JP19899196A JP3305205B2 JP 3305205 B2 JP3305205 B2 JP 3305205B2 JP 19899196 A JP19899196 A JP 19899196A JP 19899196 A JP19899196 A JP 19899196A JP 3305205 B2 JP3305205 B2 JP 3305205B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- power generation
- gasifier
- stage
- waste plastic
- 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.)
- Expired - Lifetime
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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Gasification And Melting Of Waste (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は産業廃棄プラスチッ
ク、一般系プラスチックや容器包装プラスチック等のプ
ラスチック廃棄物をガス化し、このガス化ガスを燃料ガ
スとして内燃機関発電ユニットで発電する設備に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility for gasifying plastic waste such as industrial waste plastic, general plastic, container packaging plastic, and the like, and using the gasified gas as fuel gas to generate power in an internal combustion engine power generation unit.
【０００２】[0002]
【従来の技術】従来、一般家庭、事業所等から排出され
る廃プラスチック及び生ごみ、廃紙等の廃棄物のうち、
発熱量が５０００Ｋｃａｌ／ｋｇ以上のプラスチック類
は公知のとおり、燃焼すると局部的な高温領域が発生
し、炉の寿命を短縮するといった不具合が発生するので
大半が埋立て処分されており、一般的なごみ焼却発電は
廃紙、生ごみ等の発熱量が２５００〜４５００Ｋｃａｌ
／ｋｇのごみが対象になっている。2. Description of the Related Art Conventionally, waste plastics, garbage, waste paper, and the like discharged from general households and business establishments have been developed.
As is well known, plastics having a calorific value of 5000 Kcal / kg or more generate local high-temperature areas when burned, and cause problems such as shortening the life of the furnace. The incineration power generation has a calorific value of waste paper and garbage of 2500 to 4500 Kcal
/ Kg of garbage is targeted.
【０００３】また図５に示すように一般的なごみ焼却発
電では、廃プラスチック６０を流動床式またはストーカ
式焼却炉５１で焼却し、その約８５０℃の燃焼ガス６１
によって水管式ボイラ５２で蒸気６２を発生し、この３
００℃以下の蒸気６２によってタービンを具備した発電
機５３を稼働して電気６３を発電する。As shown in FIG. 5, in general waste incineration power generation, waste plastic 60 is incinerated in a fluidized bed type or stoker type incinerator 51 and the combustion gas 61 at about 850 ° C.
The steam 62 is generated in the water tube boiler 52 by the
A generator 53 equipped with a turbine is operated by steam 62 having a temperature of 00 ° C. or less to generate electricity 63.
【０００４】一方、ボイラ５２で熱交換して１６０℃に
降温した廃ガス６４をバッグフィルタ５４によって処理
してダスト６５を除去すると共に９０℃に降温し、煙突
５５から排出する。On the other hand, the waste gas 64 which has been heated to 160 ° C. by exchanging heat with the boiler 52 is treated by the bag filter 54 to remove dust 65, cooled to 90 ° C., and discharged from the chimney 55.
【０００５】[0005]
【発明が解決しようとする課題】一般的なごみ焼却発電
では、炉内で生ごみや塩ビ等に含まれる水分と塩素が反
応して塩酸を生成し、ボイラチューブが約３００℃以上
になるとこの塩酸がボイラチューブを急速に腐食させる
ので、これを防止するために蒸気温度を３００℃以下に
抑える必要がある。従って、発電効率が約１０％と低
い。In a general refuse incineration power plant, water contained in garbage and PVC reacts with chlorine in a furnace to generate hydrochloric acid. When the temperature of the boiler tube exceeds about 300 ° C., the hydrochloric acid is generated. However, the steam temperature rapidly corrodes the boiler tube. In order to prevent this, the steam temperature must be suppressed to 300 ° C. or less. Therefore, the power generation efficiency is as low as about 10%.
【０００６】また、図５に示す従来の廃プラスチック焼
却発電でも、流動床式またはストーカ式焼却炉５１にお
ける焼却時に塩素ガスが発生し、ボイラ５２で熱交換す
る際に塩酸を生成するので、この燃焼ガスを冷却してボ
イラ５２が発生する蒸気の温度を３００℃以下に抑え、
ボイラチューブの腐食を防止する必要がある。従って、
発電効率が約１０％と低い。Also, in the conventional waste plastic incineration power generation shown in FIG. 5, chlorine gas is generated at the time of incineration in the fluidized bed type or stoker type incinerator 51, and hydrochloric acid is generated at the time of heat exchange in the boiler 52. The temperature of steam generated by the boiler 52 by cooling the combustion gas is suppressed to 300 ° C. or less,
It is necessary to prevent boiler tube corrosion. Therefore,
Power generation efficiency is as low as about 10%.
【０００７】本発明は、廃プラスチックを燃料として高
効率の発電を安定して行いうる発電設備を提供すること
を課題としている。An object of the present invention is to provide a power generation facility capable of stably performing high-efficiency power generation using waste plastic as a fuel.
【０００８】[0008]
【課題を解決するための手段】本発明は、前記課題を解
決するため、廃プラスチックからプラスチック以外を除
去する廃プラスチック前処理装置と、同廃プラスチック
前処理装置で得られたプラスチックを用いたプラスチッ
クガス化装置と、同ガス化装置で生成したガスに対する
ガス精製装置と、同ガス精製装置を出たガスを用いる燃
料ガス内燃機関発電ユニットとを順次配置して接続した
廃プラスチックガス化発電設備であって、前記ガス精製
装置と前記燃料ガス内燃機関発電ユニットとの間に、炭
化水素ガス添加発熱量調節装置を配置して接続した廃プ
ラスチックガス化発電設備を提供する。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a waste plastic pretreatment device for removing non-plastic from waste plastic, and a plastic using a plastic obtained by the waste plastic pretreatment device. A gasifier, a gas purifier for gas generated by the gasifier, and a fuel gas internal combustion engine power generation unit using the gas exiting the gas purifier were sequentially arranged and connected.
Waste plastic gasification power generation equipment, wherein the gas purification
Between the device and the fuel gas internal combustion engine power generation unit
Provided is a waste plastic gasification power generation facility in which a hydrogen hydride gas addition heating value adjustment device is arranged and connected .
【０００９】このように構成した本発明の廃プラスチッ
クガス化発電設備においては、まず、廃プラスチックに
混在している紙、鉄、アルミ等の非プラスチックを廃プ
ラスチック前処理装置によって除去し、好ましはその廃
プラスチックを微粉砕して、ガス化の原料としてプラス
チックガス化装置によってガス化する。In the waste plastics gasification power generation equipment of the present invention thus configured, first, non-plastics such as paper, iron, and aluminum mixed in the waste plastics are removed by a waste plastic pretreatment device. Crushes the waste plastic and gasifies it with a plastic gasifier as a raw material for gasification.
【００１０】このガス化ガスに含有されている例えばＨ
ＣＩ、ＨＣＮ、Ｈ2 Ｓ、ＮＨ3 等の有害物を、アリカリ
液による湿式スクラバーや活性炭吸着塔等を具備するガ
ス精製装置によって完全に除去して燃料ガスとし、燃料
ガス内燃機関発電ユニットで直接燃焼して稼働させ、高
効率の発電を行う。[0010] For example, H contained in this gasification gas
Harmful substances such as CI, HCN, H 2 S, and NH 3 are completely removed by a gas purifier equipped with a wet scrubber using an alkali solution, an activated carbon adsorption tower, and the like to produce fuel gas, which is directly generated by a fuel gas internal combustion engine power generation unit. It burns and operates to generate high-efficiency power.
【００１１】本発明による廃プラスチックガス化発電設
備では、前記した構成に加え、前記ガス精製装置と前記
燃料ガス内燃機関発電ユニットとの間に、炭化水素ガス
添加発熱量調節装置を配置して接続する。 [0011] In the waste plastic gasification power generation equipment according to the present invention, in addition to the above-mentioned configuration, a hydrocarbon gas addition heating value adjusting device is arranged and connected between the gas purification device and the fuel gas internal combustion engine power generation unit. you.
【００１２】このような構成とすることにより、前記し
た作用に加え、発熱量が刻々と変化する前記燃料ガスに
対し、その炭化水素ガス添加発熱量調節装置によってＬ
ＰＧ等の炭化水素ガスをその発熱量の変化に応じて所要
量添加してその成分を調節し、この燃料ガスの発熱量を
一定に保持すると共に増大させ、燃料ガス内燃機関発電
ユニットの発電を安定化させ、従来のごみ焼却発電を大
きく上回る高効率の発電を行う発電設備とすることがで
きる。炭化水素ガス添加による燃料ガスのカロリー調整
の様子を図４に示してある。With this configuration, in addition to the above-described operation, the fuel gas whose calorific value changes every moment is controlled by the hydrocarbon gas-added calorific value adjusting device.
A required amount of hydrocarbon gas such as PG is added in accordance with the change in the calorific value to adjust the component, and the calorific value of the fuel gas is kept constant and increased, so that the power generation of the fuel gas internal combustion engine power generation unit is performed. By stabilizing, it is possible to provide a power generation facility that performs high-efficiency power generation that greatly exceeds conventional waste incineration power generation. FIG. 4 shows how the calorie of the fuel gas is adjusted by adding the hydrocarbon gas.
【００１３】また、本発明は、廃プラスチックからプラ
スチック以外を除去する廃プラスチック前処理装置と、
同廃プラスチック前処理装置で得られたプラスチックを
用いたプラスチックガス化装置と、同ガス化装置で生成
したガスに対するガス精製装置と、同ガス精製装置を出
たガスを用いる燃料ガス内燃機関発電ユニットとを順次
配置して接続した廃プラスチックガス化発電設備であっ
て、前記プラスチックガス化装置を、第１段ガス化炉
と、第１段ガス化炉予熱装置と、第２段ガス化炉と、前
記第１段ガス化炉と第２段ガス化炉との間に配置して接
続した飛灰除去装置と、前記第１段ガス化炉及び第２段
ガス化炉の入側にそれぞれ設けた水蒸気・支燃ガス混合
ガス供給手段と、前記第１段ガス化炉に接続され、水蒸
気と第２段ガス化炉ガスあるいは第１段ガス化炉ガスを
混合して第１段ガス化炉に噴流用ガスとして供給するガ
ス混合装置とを具備した構成とした廃プラスチックガス
化発電設備を提供する。[0013] Also, the present invention provides a plastic from the waste plastic
Waste plastic pretreatment device for removing non-stick
Plastics obtained by the waste plastic pretreatment device
Plastic gasifier used and generated by the same gasifier
Gas purification equipment for
And a fuel gas internal combustion engine power generation unit
Waste plastic gasification power generation equipment
Te, the plastic gasifier, a first-stage gasifier, a first stage gasification furnace preheater, a second-stage gasifier, the first stage gasification furnace and a second stage gasifier A fly ash removing device arranged and connected between the first stage gasifier and the steam / supporting gas mixed gas supply means provided on the inlet side of the first stage gasifier and the second stage gasifier, respectively; A gas mixing device connected to the gasification furnace, the gas mixing device being configured to mix the steam with the second-stage gasification gas or the first-stage gasification gas and supply the mixed gas as a jet gas to the first-stage gasification furnace; Waste plastic gas
Provide chemical power generation equipment .
【００１４】このように構成したプラスチックガス化装
置を備えた発電設備では、まず、第１段ガス化炉予熱装
置によって第１段ガス化炉を所要の温度に予め予熱し、
この第１段ガス化炉に廃プラスチックを前処理した原料
を供給すると共に水蒸気支燃ガス混合ガス供給手段によ
って水蒸気と支燃ガスとの混合ガスを供給して反応さ
せ、１次ガス化ガスを生成する。[0014] In thus constructed power generating plant equipped with a plastic gasifier was, or not a, the first stage gasification furnace preheated to a required temperature by the first stage gasification furnace preheater,
The raw material obtained by pretreating the waste plastic is supplied to the first-stage gasification furnace, and the mixed gas of steam and the supporting gas is supplied and reacted by the steam supporting gas mixed gas supply means to cause the primary gasification gas to react. Generate.
【００１５】この１次ガス化ガス中のダスト等の飛灰を
飛灰除去装置によって除去し、水蒸気・支燃ガス混合ガ
ス供給手段によって供給される水蒸気・支燃ガス混合ガ
スと混合して第２段ガス化炉へ供給すると共に、水蒸気
と第２段ガス化炉入側または第１段ガス化炉出側からの
ガス化ガスと混合して第１段ガス化炉へ噴霧用ガスとし
て供給し、１次ガス化ガス中に残留している未反応の原
料を完全にガス化できる。[0015] Fly ash such as dust in the primary gasification gas is removed by a fly ash removing device and mixed with a steam / supporting gas mixed gas supplied by a steam / supporting gas mixed gas supply means. Along with supplying to the second-stage gasifier, water vapor is mixed with the gasified gas from the second-stage gasifier inlet or the first-stage gasifier outlet and supplied as a spray gas to the first-stage gasifier. In addition, unreacted raw materials remaining in the primary gasification gas can be completely gasified.
【００１６】[0016]
【発明の実施の形態】以下、図示した本発明の実施の一
形態による発電設備により、本発明を具体的に説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to a power generation facility according to an embodiment of the present invention shown in the drawings.
【００１７】（構成）本発明の実施の一形態に係る廃プ
ラスチックガス化発電装置の概念を示す図１において、
ガス化装置２の入側には粗粉砕・風力選別・磁力選別・
渦電流選別・振動スクリーン選別・微粉砕装置を具備し
た前処理装置１が配置されて接続されている。(Construction) In FIG. 1 showing the concept of a waste plastic gasification power generation apparatus according to one embodiment of the present invention,
On the inlet side of the gasifier 2, coarse crushing, wind separation, magnetic separation,
A pretreatment device 1 having an eddy current sorting / vibrating screen sorting / pulverizing device is arranged and connected.
【００１８】また、ガス化装置２の出側にはアルカリ液
湿式スクラバー、活性炭吸着塔、触媒分解塔を具備した
ガス精製装置３、ガスホルダ４、カロリー調整器５、ガ
スエンジン発電ユニット８が順次配置されて接続されて
いる。カロリー調整器５にはＬＰＧ供給装置６が流量調
節弁６ａを介して設けられ、また、カロリー調整器５と
ガスエンジン発電ユニット８との間にはカロリー検出器
７が設けられている。ガスエンジン発電ユニット８には
廃熱回収装置９が設けられている。On the outlet side of the gasifier 2, a gas purifier 3, a gas holder 4, a calorie adjuster 5, and a gas engine power generation unit 8 are sequentially provided with an alkaline liquid wet scrubber, an activated carbon adsorption tower, and a catalyst decomposition tower. Being connected. The calorie adjuster 5 is provided with an LPG supply device 6 via a flow control valve 6a, and a calorie detector 7 is provided between the calorie adjuster 5 and the gas engine power generation unit 8. The gas engine power generation unit 8 is provided with a waste heat recovery device 9.
【００１９】図１の発電設備に用いられているガス化装
置２は図２に示すように、原料供給装置１１と、第１段
ガス化炉１２と、この第１段ガス化炉１２に設けられた
予熱装置１３及び水封タンク１４と、サイクロン１５
と、第２段ガス化炉１６と、この第２段ガス化炉１６に
設けられた予熱装置２１と、熱回収装置１７と、ガス洗
浄装置１８と、ガス洗浄装置１８の廃液のための廃液処
理装置１９とを有している。As shown in FIG. 2, the gasifier 2 used in the power generation equipment shown in FIG. 1 is provided with a raw material supply device 11, a first-stage gasifier 12, and the first-stage gasifier 12. Preheater 13 and water seal tank 14 and cyclone 15
, A second-stage gasification furnace 16, a preheating device 21 provided in the second-stage gasification furnace 16, a heat recovery device 17, a gas cleaning device 18, and a waste liquid for a waste liquid of the gas cleaning device 18. And a processing device 19.
【００２０】また、第２段ガス化炉１６の入側または第
１段ガス化炉１２の出側及び熱回収装置１７及び第１段
ガス化炉１２の下部に接続されたエゼクタ２０が設けら
れている。An ejector 20 is provided which is connected to the inlet of the second-stage gasifier 16 or the outlet of the first-stage gasifier 12 and to the heat recovery unit 17 and the lower part of the first-stage gasifier 12. ing.
【００２１】なお、ガスエンジン発電ユニット８の代わ
りにガスタービン発電ユニットを用いてもよい。A gas turbine power generation unit may be used in place of the gas engine power generation unit 8.
【００２２】（作用・効果）ガス化装置２の始動時に
は、第１段ガス化炉１２を予熱装置１３によって約７０
０℃に、第２段ガス化炉１６を予熱装置２１によって約
１０００℃にそれぞれ予熱しておく。(Operation / Effect) When the gasifier 2 is started, the first-stage gasifier 12 is heated to about 70
The second-stage gasification furnace 16 is preheated to about 1000 ° C. by the preheating device 21 at 0 ° C., respectively.
【００２３】廃プラスチック３０を前処理装置１によっ
て粗粉砕し、混入した不燃物である土砂、ガラス、陶器
類を風力選別し、鉄を磁力選別し、アルミを渦電流選別
した後に微粉砕した原料３１を原料供給装置１１によっ
て第１段ガス化炉１２に供給する。また、水蒸気酸素混
合ガス３２を第１段ガス化炉１２に供給する。The waste plastic 30 is coarsely pulverized by the pretreatment device 1, and the mixed non-combustible materials such as earth and sand, glass and ceramics are subjected to the wind separation, the iron is magnetically separated, the aluminum is subjected to the eddy current selection, and the finely pulverized raw material is obtained. 31 is supplied to the first-stage gasification furnace 12 by the raw material supply device 11. Further, the steam / oxygen mixed gas 32 is supplied to the first-stage gasification furnace 12.
【００２４】このようにして予熱された熱によって原料
３１と水蒸気酸素混合ガス３２の水蒸気及び酸素とが反
応してガス化し、１次ガス化ガス３３を生成する。この
反応を維持するためには７００℃以上の温度を維持する
ことと、供給される原料３１を反応帯域中に保持する噴
流層を形成させることが必要である。The raw material 31 reacts with the water vapor and oxygen of the water vapor / oxygen mixed gas 32 by the preheated heat to gasify and generate a primary gasified gas 33. In order to maintain this reaction, it is necessary to maintain a temperature of 700 ° C. or higher and to form a spouted bed that holds the supplied raw material 31 in the reaction zone.
【００２５】第１段ガス化炉１２の噴流用として第２段
ガス化炉１６または第１段ガス化炉１２からの高温（約
６００〜１０００℃）の１次ガス化ガス３３と熱回収装
置１７からの高圧の水蒸気３５（約１５気圧、約２００
〜３５０℃）とをエゼクタ２０で混合した高温（約５０
０〜７００℃）の循環ガス３８を使用しているので、充
分な反応温度の確保と原料３１を長時間反応帯域に滞留
させる噴流層の形成ができ、ガス化反応を円滑に行わせ
ることができる。The high temperature (about 600 to 1000 ° C.) primary gasification gas 33 from the second gasification furnace 16 or the first gasification furnace 12 and the heat recovery device are used for the jet of the first gasification furnace 12. High pressure steam 35 from about 17 (about 15 atmospheres, about 200
To 350 ° C.) in the ejector 20.
Since the circulating gas 38 (0 to 700 ° C.) is used, it is possible to secure a sufficient reaction temperature and form a spouted bed in which the raw material 31 stays in the reaction zone for a long time, so that the gasification reaction can be smoothly performed. it can.
【００２６】次に、第１段ガス化炉１２で生成した１次
ガス化ガス３３中のダスト等の飛灰３９をサイクロン１
５によって除去し、水蒸気酸素混合ガス３２と混合して
第２段ガス化炉１６に供給する。そして、第１段ガス化
炉１２と同様の反応によって未反応で残留している原料
３１を完全にガス化し、この約１０００℃の２次ガス化
ガス３４を得る。Next, fly ash 39 such as dust in the primary gasification gas 33 generated in the first-stage gasification furnace 12 is removed from the cyclone 1.
5 and mixed with the steam / oxygen mixed gas 32 and supplied to the second-stage gasification furnace 16. Then, the raw material 31 remaining unreacted is completely gasified by the same reaction as in the first-stage gasification furnace 12, and the secondary gasification gas 34 at about 1000 ° C. is obtained.
【００２７】この２次ガス化ガス３４の顕熱を熱回収装
置１７で回収し、水蒸気３５を発生させて２次ガス化ガ
スを約２００℃に降温し、ガス洗浄装置１８によって水
またはアルカリ液で洗浄してガス化過程で生成されたＨ
Ｃｌ、ＨＣＮ、Ｈ2 Ｓ、ＮＨ 3 等の有害物の大部分を除
去し、このガス洗浄によって発生した廃液３７を廃液処
理装置１９によって無害化処理して放流する。The sensible heat of the secondary gasification gas 34 is used for heat recovery.
The gas is recovered in the unit 17 and steam 35 is generated to generate secondary gasification gas.
The temperature of the gas is lowered to about 200 ° C.
Or H generated in the gasification process by washing with an alkaline solution
Cl, HCN, HTwoS, NH ThreeMost of the harmful substances such as
And the waste liquid 37 generated by the gas cleaning is subjected to a waste liquid treatment.
It is detoxified by the treatment device 19 and discharged.
【００２８】次に、この２次ガス化ガス３４に残留して
いるＨＣｌ、ＨＣＮ、Ｈ2 Ｓ、ＮＨ 3 等の有害物をガス
精製装置３によって吸着して完全に除去した精製ガス化
ガス３６をガスホルダ４に一時貯蔵し、カロリー調整器
５でＬＰＧ供給装置６からＬＰＧ４２を添加して燃料ガ
ス４１を生成する。この燃料ガス４１の熱量をカロリー
検出器７によって検出し、この検出値によって流量調節
弁６ａを作動させてＬＰＧ４２の添加量を調節する。Next, the secondary gasified gas 34
HCl, HCN, HTwoS, NH ThreeHarmful substances such as gas
Purified gasification which is completely removed by adsorption by the purification device 3
Gas 36 is temporarily stored in gas holder 4 and calorie adjuster
5, the LPG 42 is added from the LPG supply device 6 and the fuel
, And generates the source 41. The calorific value of this fuel gas 41
It is detected by the detector 7 and the flow rate is adjusted by the detected value.
The amount of LPG 42 added is adjusted by operating the valve 6a.
【００２９】図４に示すように、平均約２８００Ｋｃａ
ｌ／Ｎｍ3 の２次ガス化ガス３４の刻々変化する発熱量
検出値によってＬＰＧ４２の添加量（平均５Ｖｏｌ％）
を加減し、その発熱量を一定に保持することにより、燃
料ガス４１の発熱量は約４０５０Ｋｃａｌ／Ｎｍ3 に上
昇する。As shown in FIG. 4, the average is about 2800 Kca
The amount of LPG42 added (average 5 Vol%) based on the detected value of the calorific value of the secondary gasification gas 34, which changes every 1 / Nm 3.
And the calorific value of the fuel gas 41 rises to about 4050 Kcal / Nm 3 by keeping the calorific value constant.
【００３０】次に、この燃料ガス４１をガスエンジン発
電ユニット８で直接燃焼して稼働させることによって約
２６％の発電端効率で電気４３を発電し、廃熱回収装置
９によってその廃ガス４４から水蒸気３５及び温水４６
を生成することにより、約５８％の総合熱効率を得る。
この水蒸気３５は図示しない水蒸気酸素混合装置によっ
て酸素と混合し、第１段ガス化炉１２及び第２段ガス化
炉１６に供給する水蒸気酸素混合ガス３２に利用する。
以上説明した発電の手順を図３のフロー図に示してあ
る。Next, the fuel gas 41 is directly burned and operated by the gas engine power generation unit 8 to generate electricity 43 at a power generation end efficiency of about 26%, and the waste heat recovery unit 9 generates the electricity 43 from the waste gas 44. Steam 35 and hot water 46
Produces an overall thermal efficiency of about 58%.
The steam 35 is mixed with oxygen by a steam / oxygen mixing device (not shown), and is used as a steam / oxygen mixed gas 32 to be supplied to the first-stage gasification furnace 12 and the second-stage gasification furnace 16.
The power generation procedure described above is shown in the flowchart of FIG.
【００３１】以上、本発明を図示した実施形態に基づい
て具体的に説明したが、本発明がこれらの実施形態に限
定されず特許請求の範囲に示す本発明の範囲内で、その
具体的構造、構成に種々の変更を加えてよいことはいう
までもない。As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and specific structures within the scope of the present invention shown in the claims are set forth. Needless to say, various changes may be made to the configuration.
【００３２】例えば、前記した実施の形態では第１段ガ
ス化炉１２に噴霧用ガスとして供給される循環ガス３８
は水蒸気３５と１次ガス化ガス３３とを用いているが、
場合によっては水蒸気３５と第２段ガス化炉１６の２次
ガス化ガスとを用いてもよい。For example, in the above-described embodiment, the circulating gas 38 supplied to the first-stage gasification furnace 12 as the atomizing gas is used.
Uses steam 35 and primary gasification gas 33,
In some cases, steam 35 and the secondary gasification gas of the second-stage gasification furnace 16 may be used.
【００３３】[0033]
【発明の効果】本発明による廃プラスチックガス化発電
設備では、次に示す効果がある。The waste plastics gasification power generation equipment according to the present invention has the following effects.
【００３４】（１）廃プラスチック前処理装置によって
非プラスチック混入物を除去した廃プラスチックを好ま
しくは微粉砕してガス化原料とし、プラスチックガス化
装置によってガス化ガスを生成し、ガス精製装置によっ
て有害成分を除去して燃料ガスとすることにより、この
燃料ガスを燃料ガス内燃機関発電ユニットで直接燃焼し
て発電することが可能になり、ごみ焼却発電の２倍以上
の発電端効率を得る高効率の発電を行うことができる。
また、従来のごみ焼却発電に比べ、比較的小規模の廃プ
ラスチックの発生源に直結したオンサイト型の発電源を
得ることができる。(1) Waste plastic from which non-plastic contaminants have been removed by a waste plastic pretreatment device is preferably finely pulverized into a gasification raw material, and a gasification gas is generated by a plastic gasification device and harmful by a gas purification device. By removing the components to produce fuel gas, this fuel gas can be directly combusted by the fuel gas internal combustion engine power generation unit to generate power, resulting in a high efficiency that achieves more than twice the power generation efficiency of waste incineration power generation Power generation.
Further, an on-site power source directly connected to a relatively small-scale waste plastic source can be obtained as compared with the conventional waste incineration power generation.
【００３５】（２）本発明の発電設備においては、ガス
精製装置と燃料ガス内燃機関発電ユニットの間に炭化水
素ガス添加発熱量調節装置を配置しているので、上記
（１）項の効果に加え、発熱量が変化する燃料ガスに炭
化水素ガス添加発熱量調節装置によってＬＰＧ等の炭化
水素ガスをその発熱量の変化に応じて所要量添加するこ
とにより、その発熱量を一定に保持すると共に増大させ
ることが可能となり、燃料ガス内燃機関発電ユニットを
安定して稼働すると共にさらに高効率の安定した発電を
行うことができる。[0035] (2) the power generating plant of the present invention, since the arrangement of hydrocarbon gas added calorific value regulating device between the gas purifier and the fuel gas internal combustion engine generator unit, to the effect of (1) term In addition, by adding a required amount of hydrocarbon gas such as LPG to the fuel gas whose calorific value changes according to the calorific value change by the hydrocarbon gas addition calorific value adjusting device, the calorific value is kept constant and As a result, it is possible to stably operate the fuel gas internal combustion engine power generation unit and to perform more efficient and stable power generation.
【００３６】（３）本発明の発電設備において、そのプ
ラスチックガス化装置として、第１段ガス化炉と、第１
段ガス化炉予熱装置と、第２段ガス化炉と、第１段ガス
化炉と第２段ガス化炉との間に配置した飛灰除去装置
と、第１段ガス化炉及び第２段ガス化炉の入側にそれぞ
れ設けた水蒸気・支燃ガス混合ガス供給手段と、第１段
ガス化炉に接続され、水蒸気と第２段ガス化炉ガスまた
は第１段ガス化炉ガスを混合して第１段ガス化炉に噴霧
用ガスとして供給するガス混合装置とを具備したガス化
装置を設けた構成のものを採用することにより、第１段
ガス化炉で原料を効率良くガス化し、１次ガス化ガス中
の残渣を除去し、第２段ガス化炉において１次ガス化ガ
ス中に残留している未反応の原料を完全にガス化するこ
とができる。(3) In the power generation equipment of the present invention, the plastic gasification apparatus includes a first-stage gasification furnace,
Stage gasifier preheating device, second stage gasifier, fly ash removal device disposed between the first stage gasifier and the second stage gasifier, first stage gasifier and second stage gasifier A steam / supporting gas mixed gas supply means provided on the inlet side of the stage gasification furnace, respectively, and connected to the first stage gasification furnace, for supplying steam and the second stage gasification gas or the first stage gasification gas. By using a gasification device having a gas mixing device that is provided with a gas mixing device that mixes and supplies the mixture as a spray gas to the first-stage gasification furnace, the first-stage gasification furnace efficiently converts the raw materials into gas. Thus, the residue in the primary gasification gas can be removed, and the unreacted raw material remaining in the primary gasification gas can be completely gasified in the second-stage gasification furnace.
【図１】本発明の実施の一形態に係る廃プラスチックガ
ス化発電設備の概念を示す説明図。FIG. 1 is an explanatory diagram showing the concept of a waste plastic gasification power generation facility according to one embodiment of the present invention.
【図２】図１の発電設備に用いられているプラスチック
ガス化装置の概念を示す説明図。FIG. 2 is an explanatory diagram showing the concept of a plastic gasification device used in the power generation equipment of FIG.
【図３】本発明の廃プラスチックガス化発電設備におけ
る発電の手順を示すフロー図。FIG. 3 is a flowchart showing a power generation procedure in the waste plastic gasification power generation equipment of the present invention.
【図４】本発明の廃プラスチックガス化発電設備におけ
る燃料ガスのカロリー調整を示す線図。FIG. 4 is a diagram showing calorie adjustment of fuel gas in the waste plastic gasification power generation equipment of the present invention.
【図５】従来のごみ焼却発電設備の概念を示す説明図。FIG. 5 is an explanatory diagram showing the concept of a conventional refuse incineration power generation facility.
１ 前処理装置 ２ ガス化装置 ３ ガス精製装置 ４ ガスホルダ ５ カロリー調整器 ６ ＬＰＧ供給装置 ７ カロリー検出器 ８ ガスエンジン発電ユニット ９ 廃熱回収装置 １１ 原料供給装置 １２ 第１段ガス化炉 １３，２１ 予熱装置 １４ 水封タンク １５ サイクロン １６ 第２段ガス化炉 １７ 熱回収装置 １８ ガス洗浄装置 １９ 廃液処理装置 ３０ 廃プラスチック ３１ 原料 ３２ 水蒸気酸素混合ガス ３３ １次ガス化ガス ３４ ２次ガス化ガス ３５ 水蒸気 ３６ 精製ガス化ガス ３８ 循環ガス ４１ 燃料ガス ４２ ＬＰＧ ４３ 電気 ４６ 温水 REFERENCE SIGNS LIST 1 pretreatment device 2 gasifier 3 gas purification device 4 gas holder 5 calorie adjuster 6 LPG supply device 7 calorie detector 8 gas engine power generation unit 9 waste heat recovery device 11 raw material supply device 12 first stage gasification furnace 13,21 Preheating device 14 Water seal tank 15 Cyclone 16 Second stage gasifier 17 Heat recovery device 18 Gas cleaning device 19 Waste liquid treatment device 30 Waste plastic 31 Raw material 32 Steam / oxygen mixed gas 33 Primary gasification gas 34 Secondary gasification gas 35 Steam 36 Purified gasification gas 38 Circulating gas 41 Fuel gas 42 LPG 43 Electricity 46 Hot water
───────────────────────────────────────────────────── フロントページの続き (72)発明者 新屋 謙治 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島製作所内 (72)発明者 橋本 律男 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (72)発明者 堀江 茂斉 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (72)発明者 金子 雅人 広島市西区観音新町四丁目６番22号 三 菱重工業株式会社広島研究所内 (56)参考文献 特開 昭55−52381（ＪＰ，Ａ) 特開 昭56−12914（ＪＰ，Ａ) 特開 平８−145326（ＪＰ，Ａ) 特開 平７−113292（ＪＰ，Ａ) 特開 昭50−43766（ＪＰ，Ａ) 特開 平10−38235（ＪＰ，Ａ) 特開 平５−87315（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F23G 5/027 F23G 7/12 F02C 3/28 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Shinya 4-6-22 Kanon Shinmachi, Nishi-ku, Hiroshima Sanritsu Heavy Industries, Ltd. Hiroshima Works (72) Inventor Ritsuo Hashimoto 4-2-2 Kanon Shinmachi, Nishi-ku, Hiroshima-shi No. 3 Hiroshi Heavy Industries, Ltd.Hiroshima Research Center (72) Inventor Shigeyoshi Horie 4-22 Kannon Shinmachi, Nishi-ku, Hiroshima City Investigator Hiroshima Research Institute, Hiroshima (72) Inventor Masato Kaneko 4-chome Kannon Shinmachi, Nishi-ku, Hiroshima City No. 6-22, Mitsubishi Heavy Industries, Ltd. Hiroshima Laboratory (56) References JP-A-55-52381 (JP, A) JP-A-56-12914 (JP, A) JP-A 8-145326 (JP, A) JP-A-7-113292 (JP, A) JP-A-50-43766 (JP, A) JP-A-10-38235 (JP, A) JP-A-5-87315 (JP, A) (58) Fields investigated (Int.Cl. 7 , (DB name) F23G 5/027 F23G 7/12 F02C 3/28
Claims (2)
除去する廃プラスチック前処理装置と、同廃プラスチッ
ク前処理装置で得られたプラスチックを用いたプラスチ
ックガス化装置と、同ガス化装置で生成したガスに対す
るガス精製装置と、同ガス精製装置を出たガスを用いる
燃料ガス内燃機関発電ユニットとを順次配置して接続し
た廃プラスチックガス化発電設備であって、前記ガス精
製装置と前記燃料ガス内燃機関発電ユニットとの間に、
炭化水素ガス添加発熱量調節装置を配置して接続したこ
とを特徴とする廃プラスチックガス化発電設備。1. A waste plastic pretreatment device for removing non-plastic from waste plastic, a plastic gasifier using a plastic obtained by the waste plastic pretreatment device, and a gas for a gas generated by the gasifier A waste plastic gasification and power generation facility, in which a purification device and a fuel gas internal combustion engine power generation unit using gas exiting the gas purification device are sequentially arranged and connected ,
Between the manufacturing device and the fuel gas internal combustion engine power generation unit,
A waste plastic gasification power generation facility characterized in that a hydrocarbon gas addition heating value adjustment device is arranged and connected .
除去する廃プラスチック前処理装置と、同廃プラスチッ
ク前処理装置で得られたプラスチックを用いたプラスチ
ックガス化装置と、同ガス化装置で生成したガスに対す
るガス精製装置と、同ガス精製装置を出たガスを用いる
燃料ガス内燃機関発電ユニットとを順次配置して接続し
た廃プラスチックガス化発電設備であって、前記プラス
チックガス化装置を、第１段ガス化炉と、第１段ガス化
炉予熱装置と、第２段ガス化炉と、前記第１段ガス化炉
と第２段ガス化炉との間に配置して接続した飛灰除去装
置と、前記第１段ガス化炉及び第２段ガス化炉の入側に
それぞれ設けた水蒸気・支燃ガス混合ガス供給手段と、
前記第１段ガス化炉に接続され、水蒸気と第２段ガス化
炉ガスあるいは第１段ガス化炉ガスを混合して前記第１
段ガス化炉に噴流用ガスとして供給するガス混合装置と
を具備した構成としたことを特徴とする廃プラスチック
ガス化発電設備。2. A method for removing non-plastic from waste plastic.
A waste plastic pretreatment device to be removed and the waste plastic
Plastic using the plastic pre-treatment device
Gasifier and the gas generated by the gasifier
Gas purifier and the gas that exited the gas purifier
The fuel gas internal combustion engine power generation units are sequentially arranged and connected.
Waste plastic gasification power generation equipment,
Tick gasifier, first stage gasifier, first stage gasifier
Furnace preheating device, second-stage gasifier, and first-stage gasifier
Fly ash removal device connected and connected between the gasification furnace and the second stage gasifier
And the inlet of the first-stage gasifier and the second-stage gasifier.
A steam / supporting gas mixed gas supply means provided respectively;
Connected to the first-stage gasification furnace, steam and second-stage gasification
Furnace gas or first-stage gasification furnace gas,
Gas mixing device to supply gas to the stage gasifier as jet gas
Waste plastic gasification power generation equipment characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19899196A JP3305205B2 (en) | 1996-07-29 | 1996-07-29 | Waste plastic gasification power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19899196A JP3305205B2 (en) | 1996-07-29 | 1996-07-29 | Waste plastic gasification power generation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1047626A JPH1047626A (en) | 1998-02-20 |
| JP3305205B2 true JP3305205B2 (en) | 2002-07-22 |
Family
ID=16400296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19899196A Expired - Lifetime JP3305205B2 (en) | 1996-07-29 | 1996-07-29 | Waste plastic gasification power generation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3305205B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA78460C2 (en) * | 2003-06-13 | 2007-03-15 | Kawasaki Heavy Ind Ltd | Electric power supply system |
-
1996
- 1996-07-29 JP JP19899196A patent/JP3305205B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1047626A (en) | 1998-02-20 |
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