Other

Mitsubishi Heavy Industries Limited

Keishi Suga

Toshihiro Sato

Masaharu Takada

Tadashi Gengo

Akihiro Sato

Kouichi Sakamoto

Mutsuo Kuragasaki

Eisaku Nakashima

Masami Koike

Yoshitaka Uchida

A boiler scale collecting device enables collecting and recovery of most boiler scale particulates (p) in a steam flow line (f) in a steam pipe (,) extending from a power generation steam boiler to an inlet (,&prime;) of a power generation steam turbine (,). The steam pipe (,), of constant inner diameter (d), extends from the boiler side to the inlet (,&prime;) of the steam turbine (,), and turns at direction turning portion (e) from a vertical steam pipe (,&prime;) to a lateral steam pipe (,&Prime;) near the inlet (,&Prime;) of the steam turbine (,). The vertical steam pipe (,&prime;) is elongated beyond the direction turning portion (e) to form an elongated portion (,) having a lower end (,). The direction turning portion (e), including the vertical steam pipe (,&prime;) and the lateral steam pipe (,&Prime;), and the elongated portion (,) are made in an integral unit of forged steel.

Boiler scale collecting device before steam turbine

An object of the present invention is to provide a combustion apparatus in which a space which does not contribute effectively to the combustion of fuel is less prone to be produced in a furnace because burners are not disposed at the corners of the furnace. The furnace having a square horizontal cross section is provided with the burners so that an in-furnace injection direction axis line of the burner is tangent to an imaginary circle. The burner is disposed at one place on a front wall, rear wall, right side wall, and left side wall of the furnace each, at a total of four places. The burner on each wall is installed so that the intersection of the in-furnace injection direction axis line of the burner and the furnace wall surface is apart from a furnace corner (corner point) by a length L1. The value of the length L1 is 15% of a length L of one side of width of the inside wall of the furnace when the furnace is viewed from the top.

Combustion apparatus

Growing community of inventors

Nagasaki, Japan

Keishi Suga