Chemical looping system

Abstract

A chemical loop system with adjustable hydrogen and heat production ratios, in one embodiment, includes a cyclone separator, a burner, a reducer, an oxidizer, a buffer tank, and a gas supply device, which can be sequentially connected from top to bottom; it also includes an ascent pipe connecting the gas supply device at the bottom and the cyclone separator at the top; wherein, carrier particles can continuously circulate up and down in this system.

Claims

1. A chemical circuit system, comprising: A cyclone separator separates multiple carrier particles from an airflow and conveys these carrier particles downwards; a burner generates heat and receives the carrier particles from the cyclone separator, wherein the carrier particles absorb the heat and leave the burner for downward conveyance; a reducer receives and reduces the carrier particles leaving the burner, wherein the carrier particles react with hydrocarbon fuel to form multiple hydrogen-producing pathway particles and multiple non-hydrogen-producing pathway particles, which leave the reducer for downward conveyance; an oxidizer receives and oxidizes the hydrogen-producing pathway particles from the reducer, wherein the hydrogen-producing pathway particles react with water vapor and leave the oxidizer for downward conveyance; a buffer tank receives and mixes the non-hydrogen-producing pathway particles from the reducer and the hydrogen-producing pathway particles from the oxidizer to form multiple particles to be heated. A first non-mechanical valve, including a first gas inlet, is used to regulate a first mass flow rate through the first non-mechanical valve, wherein the first non-mechanical valve is connected to the reducer and the oxidizer and can be used to convey the hydrogen-producing path particles; a second non-mechanical valve, including a second gas inlet, is used to regulate a second mass flow rate through the second non-mechanical valve, wherein the second non-mechanical valve is connected to the reducer and the buffer tank and can be used to convey the non-hydrogen-producing path particles.

2. The system as described in claim 1, wherein, The first non-mechanical valve includes a first L valve, and the second non-mechanical valve includes a second L valve.

3. The system as described in claim 1, wherein, This hydrocarbon fuel includes natural gas.

4. The system as described in claim 1, wherein, The first gas injection port can inject water vapor, and the second gas injection port can inject nitrogen.

5. The system as described in claim 1, wherein, These carrier particles include multiple iron-based oxygen carrier particles.

6. The system as described in claim 1, wherein, These carrier particles are millimeter in size.

7. The system as described in claim 1, further comprising: An air supply device includes a Venturi valve and an air supply line, wherein the air supply line can receive the particles to be heated being conveyed downwards, and then the Venturi valve provides a first air supply flow rate to convey the particles to be heated along the air supply line; an ascender pipe includes a blower, wherein the ascender pipe can receive the particles to be heated being conveyed along the air supply line, and then the blower provides a second air supply flow rate to convey the particles to be heated upwards along the ascender pipe to the cyclone separator.

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