COMBINED PLANT AND MANUFACTURING METHOD OF THE SAME

• Main Author: YAMAGUCHI SOTARO
• Format: Patent
• Language: English; Japanese
• Published: 10.07.2023
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; FEEDING FUEL TO COMBUSTION APPARATUS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL; STEAM BOILERS; STEAM GENERATION; WEAPONS

To inhibit damage of a gasification furnace.SOLUTION: A combined plant 1 includes: a gasification furnace 101 which gasifies a solid fuel to generate a product gas; a boiler 30 which causes the solid fuel to burn to generate steam; a char separation device 15 which separates the product gas discharged from the gasification furnace 101 from char contained in the product gas; a char return line 46 which supplies the char separated by the char separation device 15 to the gasification furnace 101: a char supply line 47 which supplies the char separated by the char separation device 15 to the boiler 30; a flow rate adjustment valve 47a which adjusts an amount of the char supplied to the boiler 30 through the char supply line 47; and a control device 96 which controls the flow rate adjustment valve 47a so that an amount of the char which exceeds a predetermined threshold value is supplied to the boiler 30 when an amount of the char supplied to the gasification furnace 101 exceeds the predetermined threshold value.SELECTED DRAWING: Figure 1 【課題】ガス化炉の損傷を抑制することを目的とする。【解決手段】複合プラント１は、固体燃料をガス化することで生成ガスを生成するガス化炉１０１と、固体燃料を燃焼させて蒸気を生成するボイラ３０と、ガス化炉１０１から排出された生成ガスと、生成ガスに含まれたチャーとを分離するチャー分離装置１５と、チャー分離装置１５で分離したチャーをガス化炉１０１へ供給するチャー戻しライン４６と、チャー分離装置１５で分離したチャーをボイラ３０へ供給するチャー供給ライン４７と、チャー供給ライン４７を介してボイラ３０へ供給されるチャーの量を調整する流量調整弁４７ａと、ガス化炉１０１へ供給されるチャーの量が所定の閾値を超えた場合に、所定の閾値を超えた分のチャーをボイラ３０へ供給するように流量調整弁４７ａを制御する制御装置９６と、を備える。【選択図】図１