# US 10,246,653 B2 · Powder transport device and char recovery device

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- Number: US 10,246,653 B2
- Document ID: US10246653B2
- Status: Granted
- Kind: B2
- Application number: 15/329,391
- Filed: 2015-09-14
- Published: 2017-09-14
- Granted: 2019-04-02
- Earliest claimed: 2014-09-16
- Assignees: Mitsubishi Hitachi Power Systems, Ltd.
- Applicants: Mitsubishi Hitachi Power Systems, Ltd.
- Inventors: Yasuo Soda; Yoshinori Koyama; Yasunari Shibata; Haruto Shinoda
- Web page: https://patentgrep.com/patent/US10246653B2

## CPC

- C10J 3/84: with means for removing dust or tar from the gas
- B65G 53/16: Gas pressure systems operating with fluidisation of the materials
- B65G 53/18: through a porous wall
- B65G 53/20: of an air slide, e.g. a trough
- B65G 53/66: Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material {(controlling the flow of coal firing systems C21B5/003)}
- C10J 3/46: Gasification of granular or pulverulent flues in suspension
- C10J 3/506: {for entrained flow gasifiers}
- C10J 3/56: Apparatus; Plants
- C10J 3/723: {Controlling or regulating the gasification process}
- B65G 2203/042: Sensors
- C10J 2200/09: Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
- C10J 2300/093: Coal
- C10J 2300/1625: with solids treatment
- C10J 2300/165: integrated with a gas turbine or gas motor
- Y02E 20/18: Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
- C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

This powder transport device comprises: transport pipe (11) that can transport powder by way of gravity by having a prescribed angle of inclination; a porous plate (12) that is disposed along the transport pipe (11) so as to divide a line cross section into a top section and bottom section and form a powder line (11d) in the top section; an inert gas supply line for fluidization (13) that is provided under the porous plate (12) and supplies an assist gas (g) to the powder line (11d) through the porous plate (12); and a deposit status monitoring device (20) that constantly monitors the state of the powder deposited on the top face side of the porous plate (12) in the powder line (11d).

## Claims

### Claim 1

A powder transport device, comprising:
a powder transport line which can transport powder by way of gravity by having a prescribed angle of inclination;
a porous plate which is disposed along the powder transport line to divide a line cross section into a top section and a bottom section and form a powder line in the top section;
a supply line which is provided below the porous plate and supplies an inert gas for fluidization to the powder line through the porous plate;
a fixed amount supply state monitoring device which detects a wall surface temperature of the powder transport line and includes multiple temperature sensors for monitoring a fixed amount supply state of flowing powder in the powder line, the multiple temperature sensors being provided in an axial direction of the powder transport line; and
a controller which controls an amount of the inert gas for fluidization supplied to the supply line so as to fluidize the powder deposited in the powder line, if at least one detection value of the multiple temperature sensors indicates a state where a flow amount of powder decreases in association with a decrease in the wall surface temperature of the powder transport line.

### Claim 2 (depends on 1)

The powder transport device according to claim 1,
wherein the multiple temperature sensors detect an inner wall surface temperature of the powder transport line.

### Claim 3 (depends on 1)

The powder transport device according to claim 1,
wherein the multiple temperature sensors are provided in a peripheral direction of the powder transport line.

### Claim 4 (depends on 1)

The powder transport device according to claim 1, further comprising
one or multiple vibration devices having an inert gas as a drive source being provided on the lower surface of the porous plate.