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Method for gasifying carbonaceous organic materials and gasification furnace

A technology of organic matter and gasification furnace, which is applied in the field of gasification furnace, can solve the problems of poor temperature control accuracy of gasification furnace, affecting the continuous operation time of gasification furnace, and reducing carbon conversion efficiency, so as to improve gasification efficiency and prolong life , Improve the effect of gas components

Active Publication Date: 2014-02-05
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above two patents can reduce the damage of the back-mixed airflow to the vault and blind refractory bricks by configuring the dry coal powder nozzle on the top, improve the utilization rate of the equipment, and increase the effective composition of the gas, the overall flow field of the gasifier is shifted downward. As a result, the carbon conversion efficiency is reduced, and the control of the temperature field in the gasifier is relatively simple. On the one hand, the furnace temperature at the vault position in the furnace is often too high, which affects the continuous operation time of the gasifier; Poor temperature control accuracy

Method used

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  • Method for gasifying carbonaceous organic materials and gasification furnace
  • Method for gasifying carbonaceous organic materials and gasification furnace
  • Method for gasifying carbonaceous organic materials and gasification furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] See figure 1 , in this example:

[0100] Gasifier: a vertical gasifier, the refractory lining 3 used in the furnace body 2 is made of refractory bricks or water-cooled walls.

[0101] Nozzle arrangement: a top nozzle 101 is arranged on the top of the gasification furnace, the axis of the top nozzle 101 coincides with the central axis of the gasification furnace, and no furnace side nozzles are arranged. A three-channel nozzle structure is preferably used.

[0102] Feeding method: According to the structure of the above-mentioned three-channel nozzle, the top nozzle 101 sprays powdery carbon-containing organic matter, slurry carbon-containing organic matter, and gasification agent sequentially from the inside to the outside.

[0103] Gasification raw materials: wood chips (40% carbon content), lignite coal water slurry.

[0104] Gasification agent: Oxygen and water vapor from the slurry carbonaceous organic matter generated in the gasifier.

[0105] The gasification ...

Embodiment 2

[0123] See figure 2 , in this example:

[0124] Gasifier: a vertical gasifier, the refractory lining 3 used in the furnace body 2 is made of refractory bricks or water-cooled walls.

[0125] Nozzle setting: on the same horizontal plane at the top of the gasifier, a total of four top nozzles 101 are arranged in pairs along the central axis of the gasifier, that is, the axes of the four top nozzles 101 are all on the same plane and the horizontal Perpendicular to the central axis of the gasification furnace; on the peripheral side wall of the gasification furnace, there are a total of 4 furnace side nozzles 102 opposed to each other, and the axes of the 4 furnace side nozzles 102 are all located on the same horizontal plane, and the The horizontal plane is perpendicular to the central axis of the gasifier. The horizontal planes mentioned below regarding the arrangement of nozzles are all perpendicular to the central axis of the gasifier.

[0126] Feeding method: Furnace top ...

Embodiment 3

[0146] See image 3 , in this example:

[0147] Gasifier: a vertical gasifier, the refractory lining 3 used in the furnace body 2 is made of refractory bricks or water-cooled walls.

[0148] Nozzle setting: When a furnace top nozzle 101 is arranged on the top of the gasifier, the axis of the nozzle coincides with the central axis of the gasifier; the furnace side is arranged in pairs along the central axis of the gasifier, a total of 4 furnaces The side nozzles 102, in this embodiment, the axes of the furnace side nozzles 102 are located on the same horizontal plane.

[0149] Feeding method: furnace top nozzle 101 is used to inject powdery carbon-containing organic matter; furnace side nozzle 102 is used to inject slurry-state carbon-containing organic matter and oxygen required by both slurry-state and powder-state carbon-containing organic matter.

[0150] Gasification raw materials: biomass powder-wood chips (40% carbon content), lignite coal-water slurry.

[0151] Gasif...

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Abstract

The invention provides a method for gasifying carbonaceous organic materials. The method comprises a co-gasification step of simultaneously gasifying a slurry carbonaceous organic material and a powder carbonaceous organic material in a same gasification furnace according to a certain proportion, and a co-gasification fine adjustment step of adjusting the material conveying proportion of a gasifying agent, the powder carbonaceous organic material and the slurry carbonaceous organic material according to the coal gas temperature at an outlet of the gasification furnace. The invention also provides a gasification furnace used in the method for gasifying the carbonaceous organic materials, and the gasification furnace comprises a temperature feedback control module. By adopting the method and the gasification furnace provided by the invention, the consumption of water is reduced, the gasification efficiency is improved, the reaction temperature of the gasification furnace is improved at the same time, and then a number of gasification raw materials which can not be gasified by the prior art due to a high ash fusion point can be gasified, so that the selection range of coal types can be improved through the method and the gasification furnace provided by the invention. Furthermore, by adopting the gasification furnace, the injection ratio of the gasifying agent to each gasification raw material according to the temperature of the outlet coal gas can be adjusted, so that the fine adjustment of co-gasification can be realized.

Description

technical field [0001] The invention relates to a gasification method of carbon-containing organic matter and a gasification furnace used in the gasification method of carbon-containing organic matter. Background technique [0002] The efficient and clean utilization of coal is a strategic choice for the sustainable development of my country's economy and society, and an important scientific and technological basis for ensuring the stable and reliable supply of energy and sustainable development in my country. The energy and chemical system based on coal gasification is becoming a hot technology and an important development direction for efficient, clean and economical development and utilization of coal worldwide. Coal gasification is to make coal react with gasification agent to carry out various chemical reactions, and transform coal into gas for fuel or gas for synthesis. Traditionally, gasification reactions are divided into three types: carbon-oxygen reactions, water ...

Claims

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Application Information

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IPC IPC(8): C10J3/46C10J3/48C10J3/50
Inventor 陈峰侯祥生王媛媛刘洪涛
Owner ENN SCI & TECH DEV
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