Char feeding hopper, char recovery system, and coal gasification combined power generation system

A char feeding hopper, comprising:

• a char feeding hopper body which supplies separated char to a gasifier side;
• at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction;
• a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body;
• and
• a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays,
• wherein a cross-section of each casing tube has a shape which is provided with a tapered section having an apex angle on the upper edge of the casing tube.

A char feeding hopper, comprising:

• a char feeding hopper body which supplies separated char to a gasifier side;
• at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction;
• a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body;
• a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays;
• a nozzle which includes an injection hole on a base end portion opposite to the inner portion side of the char feeding hopper body in a tube base provided on the side wall of the char feeding hopper body;
• a guide which forms a channel through which inert gas injected from the nozzle is introduced into the inner portion of the char feeding hopper body,
• wherein the inert gas injected from the nozzle flows along the guide, and blows off the char accumulated on the upper portion of the casing tube.

A char feeding hopper, comprising:

• a char feeding hopper body which supplies separated char to a gasifier side;
• at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction;
• a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body;
• a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays;
• and
• a char removing portion which removes the char accumulated on the upper portion of the casing tube by injecting the inert gas, and pressurizes the inner portion of the char feeding hopper body.

A char feeding hopper, comprising:

• a char feeding hopper body which supplies separated char to a gasifier side;
• at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction;
• a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body;
• and
• a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays,
• wherein the casing tube is rotatable around a center axis.