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Biomass double fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material and system thereof

A combined cycle power generation and fluidized bed gasifier technology, applied in the fields of energy and environment, can solve the problems of adverse effects of double fluidized bed operation, low mechanical strength of dolomite, and large amount of dolomite, and achieve good economic and environmental benefits. , low cost, the effect of reducing the content of tar

Inactive Publication Date: 2019-12-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a circulating bed material, dolomite is very effective in the catalytic conversion of tar oil, but dolomite has low mechanical strength and is easy to wear, and produces a large number of fine particles during use, which adversely affects the operation of the double fluidized bed

Method used

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  • Biomass double fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material and system thereof
  • Biomass double fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material and system thereof

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Effect test

Embodiment 1

[0028] Embodiment 1: as figure 1 As shown, the biomass double fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material is as follows:

[0029] (1) The pine wood leftovers are crushed, dried and pretreated, and then enter the biomass silo. The biomass in the silo is sent to the fluidized bed gasifier through the feeding device, and the steam that is used as the fluidized medium and participates in the gasification reaction is discharged from the fluidized bed. The bottom of the gasifier is fed into the gasifier, and the biomass raw material undergoes pyrolysis and gasification under the heating of the high-temperature copper slag of the circulating bed material to generate biomass gas, biomass charcoal and tar. The circulating bed material is made of Noranda smelting slag in the Calcined copper slag calcined at 950°C for 6 hours in an air atmosphere; the particle size of the copper slag is 1.2 mm; the temperature ...

Embodiment 2

[0036] Embodiment 2: The biomass dual fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material is as follows:

[0037] (1) The walnut shells enter the biomass silo after crushing, drying and pretreatment, and the biomass in the silo is sent to the fluidized bed gasifier through the feeding device, as a fluidization medium and participates in the steam-air mixture of the gasification reaction The gas is fed from the bottom of the fluidized bed gasifier, and the biomass raw material undergoes pyrolysis and gasification reaction under the heating of the high-temperature copper slag of the circulating bed material to generate biomass gas, biomass charcoal and tar. The copper slag is made of Oss Matt smelting slag; the particle size of copper slag is 1.5mm; the temperature in the fluidized bed gasifier is 900°C, and the tar undergoes a catalytic cracking reaction under the action of the copper slag bed material, and th...

Embodiment 3

[0044] Embodiment 3: The biomass double fluidized bed catalytic gasification combined cycle power generation method using copper slag as circulating bed material is as follows:

[0045] (1) The corn stalks enter the biomass silo after crushing, drying and pretreatment, and the biomass in the silo is sent to the fluidized bed gasifier through the feeding device, as a fluidization medium and participates in the steam-air mixing of the gasification reaction The gas is fed from the bottom of the fluidized bed gasifier, and the biomass raw material undergoes pyrolysis and gasification reaction under the heating of the high-temperature copper slag of the circulating bed material to generate biomass gas, biomass charcoal and tar, which are smelted by Noranda Copper slag mixed with Vanyukov smelting slag at a mass ratio of 1:1, and then in H 2 Reduction under atmosphere for 5 hours, the particle size of copper slag is 2.0mm; the temperature in the fluidized bed gasifier is 800°C, the ...

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Abstract

The invention relates to a biomass double-fluidized-bed catalytic gasification combined cycle power generation method taking copper slag as a circulating bed material and a system thereof, and belongsto the technical field of energy and environment. According to the method and system, biomass is heated by a high-temperature copper slag bed material in a fluidized bed gasification furnace to be pyrolyzed and gasified to generate biomass gas, biomass charcoal and tar, the tar is catalyzed by the copper slag bed material to be cracked, and the biomass gas containing a small amount of tar is purified and then utilized in a gas turbine power generation mode; the copper slag bed material and the biomass charcoal from a high-temperature cyclone separator enter a fluidized bed combustion furnace,and the high-temperature copper slag bed material heated by biomass charcoal combustion heat release returns to the fluidized bed gasification furnace; a turbine of a gas turbine is combined with high-temperature flue gas discharged by high-temperature cyclone separation, and then waste heat is recycled by adopting a waste heat boiler and an organic Rankine cycle power generation mode; in the whole process, the copper slag bed material has double functions of a heat carrier and tar catalyzing cracking, and heat energy is utilized step by step in a gas-organic working medium combined cycle power generation mode.

Description

technical field [0001] The invention relates to a biomass dual fluidized bed catalytic gasification combined cycle power generation method and system using copper slag as a circulating bed material, belonging to the technical field of energy and environment. Background technique [0002] With the rapid development of social economy, the consumption of conventional energy such as coal, oil and natural gas is increasing day by day, and the resulting environmental problems have become a major concern of the world. The development and utilization of clean and non-polluting renewable energy with large resource reserves has become an important way to alleviate energy problems. Biomass fuel is derived from organic matter generated by photosynthesis, and has large reserves of biomass resources. The SOx emissions generated during its utilization are far lower than those of coal and heavy oil, and the generation of NOx is also low. At the same time, it can realize CO 2 It is a clean ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/54C10J3/86
CPCC10J3/54C10J3/86C10J2300/0916C10J2300/1675Y02P20/129Y02P20/52Y02E20/18
Inventor 刘慧利王华胡建杭
Owner KUNMING UNIV OF SCI & TECH
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