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Method for burning gasified semi-coke particles by concentrated-dilute and coarse-fine deep separation and controlled vortex stable combustion technologies

A technology for burning coal gas and semi-coke, which is applied in the direction of combustion method, fuel burned in a molten state, and combustion type, etc., and can solve the problems of gasification semi-coke being difficult to ignite and difficult to burn out, so as to achieve stable ignition and reduce heat dissipation , The effect of fast heating rate

Inactive Publication Date: 2017-04-05
CHONGQING UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects such as difficulty in igniting and burning out of solid product gasification semi-coke after low-rank coal gasification, and provide a technology for high-efficiency, stable and clean combustion of low-rank coal gasification semi-coke before combustion and during combustion and methods

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  • Method for burning gasified semi-coke particles by concentrated-dilute and coarse-fine deep separation and controlled vortex stable combustion technologies
  • Method for burning gasified semi-coke particles by concentrated-dilute and coarse-fine deep separation and controlled vortex stable combustion technologies

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Such as figure 1 Shown: A method of combusting coal gasification semi-coke particles using thick-thin, thick-fine-depth separation and controlled vortex stable combustion technology. In this method, the semi-coke powder flow is separated into thick and thin Semi-coke powder flow, dense phase coarse semi-coke powder flow, dilute phase semi-coke powder flow from the inside to the outside, followed by the inner layer nozzle (with controllable vortex blunt ...

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Abstract

A method for burning gasified semi-coke particles by concentrated-dilute and coarse-fine deep separation and controlled vortex stable combustion technologies is characterized in that low-rank coal primary air semi-coke powder flow carrying gasified semi-coke is subjected to concentrated-dilute separation to obtain concentrated-phase semi-coke powder flow and dilute-phase semi-coke powder flow; the concentrated-phase semi-coke powder flow is subjected to coarse-fine separation to obtain concentrated-phase coarse semi-coke powder flow and concentrated-phase fine semi-coke flow; the dilute-phase semi-coke powder flow and secondary air are mixed, and the mixture is guided into an outer-layer nozzle of a combustion chamber; and the concentrated-phase fine semi-coke powder flow and the concentrated-phase coarse semi-coke powder flow are guided into an inner-layer nozzle and an intermediate-layer nozzle of the combustion chamber respectively and then sprayed into the combustion chamber, a controlled vortex bluff body device and an auxiliary aeration secondary air nozzle are mounted in the inner-layer nozzle of the combustion chamber, and during ignition, the concentrated-phase fine semi-coke powder flow sprayed by the inner-layer nozzle of the combustion chamber is ignited at first. The method can effectively improve ignition, combustion and burn-out characteristics of gasified semi-coke, reduces pollutant discharge and can effectively prevent a furnace wall from slag-bonding and a water wall from high-temperature corrosion.

Description

technical field [0001] The invention relates to a combustion method of gasified semi-coke particles produced by gasification of low-order coal, in particular to a method for burning coal gasification semi-coke particles by adopting the separation of density, thickness, depth and controllable vortex combustion stabilization technology. Background technique [0002] Although my country has abundant coal reserves, the proportion of low-rank coal in production is very high, close to 50%. According to statistics, the geological reserves of low-rank coal resources such as lignite, long-flame coal, non-caking coal, etc. have reached more than 500 billion Ton. For a long time, the low-rank coal pyrolysis gasification technology based on circulating fluidized bed gasification has provided a possibility to realize the efficient and clean utilization of coal resources, but a large number of semi-coke particles produced after pyrolysis need to be burned through combustion. way of recycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/08F23C10/20F23C10/28
CPCF23C10/08F23C10/20F23C10/28
Inventor 闫云飞冯帅杨仲卿张力闫红雨唐强蒲舸冉景煜陈艳容丁林秦昌雷杜学森
Owner CHONGQING UNIV
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