Coupled fluidized bed graded conversion reaction device and reaction method

Abstract

The invention relates to a coupled fluidized bed staged conversion reaction device and reaction method, which mainly solves the problems of low carbon conversion rate and gasification intensity, low methane yield, difficult slag removal and low utilization rate of pulverized coal in the prior art . The present invention adopts a coupling fluidized bed graded conversion reaction device and reaction method, the carbon-containing raw material loaded with catalyst is pyrolyzed in a pyrolysis furnace, the pyrolyzed tar gas is collected after separation, and the semi-coke particles loaded with catalyst are combined with The gasification agent is combusted and gasified in the three reaction zones respectively. After the reaction, the carbon-containing particles and some catalysts continue to return to the pyrolysis furnace. After the two-stage separation of the device, it is discharged from the device according to the acoustic emission monitoring feedback, which better solves the above technical problems and can be applied to the industrial production of coal graded conversion.

Description

technical field

[0001] The invention relates to a coupled fluidized bed graded conversion reaction device and a reaction method. Background technique

[0002] my country is a large coal country with abundant coal resources. With the rapid development of my country's economy, the production and consumption of coal have been rising steadily. In 2014, my country's coal production reached 3.87 billion tons, which is close to half of the world's production. . my country has become the world's largest coal producer and coal consumer. The direct combustion of coal releases a large amount of pollutants, which leads to frequent occurrence of smog in many areas of our country and seriously affects the environmental problems.

[0003] Coal gasification is the core technology for efficient and clean utilization of coal, and the basis for the development of process industries such as coal-based chemical production, coal-based liquid fuels, synthetic natural gas (SNG), IGCC power generat...

Examples

Embodiment 1

[0043] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 2

[0046] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 3

[0049] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

technical field

[0001] The invention relates to a coupled fluidized bed graded conversion reaction device and a reaction method. Background technique

[0002] my country is a large coal country with abundant coal resources. With the rapid development of my country's economy, the production and consumption of coal have been rising steadily. In 2014, my country's coal production reached 3.87 billion tons, which is close to half of the world's production. . my country has become the world's largest coal producer and coal consumer. The direct combustion of coal releases a large amount of pollutants, which leads to frequent occurrence of smog in many areas of our country and seriously affects the environmental problems.

[0003] Coal gasification is the core technology for efficient and clean utilization of coal, and the basis for the development of process industries such as coal-based chemical production, coal-based liquid fuels, synthetic natural gas (SNG), IGCC power generat...

Examples

Embodiment 1

[0043] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 2

[0046] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 3

[0049] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

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