Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd

Takehiro Kitta

Hiroshi Nagai

Hiroki Honda

Akira Noma

Yuuki Endou

Fumitoshi Sakata

Masao Takuma

Tetsuo Sato

Kimitoshi Ose

Kazuaki Kakurata

Junichiro Abe

Pradeepa Lakmal Wevita

Ichiro Matsumoto

Takashi Kuroishi

Hideki Tachibana

Izuru Ishikawa

Kenichi Shibata

A diagnosis device for diagnosing a plant based on an operating state of the plant includes a monitoring data acquisition unit configured to acquire a plurality of monitoring data which are measurement values of a parameter related to the operating state of the plant measured at different times, a diagnosis target pattern generation unit configured to generate a diagnosis target pattern that is a plot pattern where each of the plurality of monitoring data is plotted against plant output data of the plant, and a pattern diagnosis unit configured to diagnose the plant based on the plot pattern of the diagnosis target pattern.

Diagnosis device and diagnosis method for plant

This method for inhibiting the occurrence of a pyrolysis deposit in a pyrolysis gasification system includes: gasifying biomass (S) through pyrolysis in a pyrolysis gasification furnace (); separating, in a solid-gas separation unit (), a pyrolysis gas (G) and a carbide (C) continuously formed through pyrolysis of the biomass (S); feeding an oxygen-containing gas (G) to the separated pyrolysis gas (G); and introducing the pyrolysis gas (G) together with the oxygen-containing gas (G) to a combustion furnace () through a pipe () which constitutes a pyrolysis gas line ().

Method for inhibiting occurrence of pyrolysis deposit in pyrolysis gasification system, and pyrolysis gasification system

The object of this invention is to provide an ash-melting furnace which can respond to fluctuations in the load and which will be capable of highly efficient and stable operation. In an ash-melting furnace which heats and melts the primary ash and the fly ash obtained by combustion together, this invention is characterized by supplying the primary ash (ash containing rough particles) from upper end of the furnace to form an upper layer of a two-tiered layer of ash, supplying the fly ash (ash containing minute particles) from an upper end of the furnace to form a lower layer of the two-tiered layer of ash, moving the two-tiered layer together towards the far end of the furnace, and heating and melting the two-tiered layer by a burner to form molten slugs during the moving step. When the burner is an oxygen-enriched burner, this configuration makes it possible to control the volume of oxygen to be added to the burner air (including changing the density of the oxygen). This invention can control not only the volume of fuel but also the density of the oxygen-enriched air and the volume of the ash to be supplied in response to the state of flow of the molten ash melted by the oxygen-enriched burner.

Ash melting furnace and ash melting method thereof

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Tokyo, Japan

Takehiro Kitta