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Low volatile coal water slurry combustion device

A combustion device, low volatile technology, applied in the direction of using a variety of fuel combustion, burners, combustion methods, etc., to achieve the effects of high cost performance, simple equipment structure, easy maintenance and use

Inactive Publication Date: 2012-03-14
GUIZHOU AERONAUTICAL ENGINE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there are still many coals with a volatile content lower than 30%, in order to solve the problem of stable combustion, it is necessary to solve the technical problem of stable combustion of low volatile coal water slurry

Method used

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  • Low volatile coal water slurry combustion device
  • Low volatile coal water slurry combustion device
  • Low volatile coal water slurry combustion device

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Embodiment Construction

[0022] Depend on figure 1 with figure 2 As shown, a low-volatile coal-water slurry combustion device of the present invention is mainly composed of a back-type combustion chamber 1, an ejector 5, a burner 6, and the like. Wherein the burner 6 comprises a primary swirler 13, a primary combustion chamber 14, a secondary swirler 16, a fuel nozzle (ignition) device 12, a coal-water slurry spray gun 10, a nozzle fixing bracket 11 and a burner mixing chamber 15; The injector 5 includes a high-temperature return gas pipe 7, an injector mixing chamber 8, and an injector inlet nozzle 9; the return-type combustion chamber 1 is a general-purpose return-type industrial furnace structure.

[0023] The ejector inlet nozzle 9 is a convergent structure, its inlet end is directly connected to the high-pressure fan interface or the outlet of the high-pressure air flow pipeline, and its nozzle exhaust port is installed in the center of the ejector mixing chamber 8, And on the same axis; the e...

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Abstract

The invention relates to a low volatile coal water slurry combustion device. The device mainly comprises a loop-shaped combustion chamber 1, an ejector 5, a combustion head 6 and the like. When combustion air provided by main air flow 4 enters an ejector mixing chamber at high speed from an ejector nozzle, the high temperature fuel gas is sucked in a combustion head mixing chamber, wherein the high temperature fuel gas flows in the ejector mixing chamber from a high temperature reflow fuel gas pipeline; the high temperature fuel gas in the combustion head mixing chamber enters a primary combustion chamber by ejecting with a primary swirler, such that the temperature of the air flow is increased. A fuel oil combustion system of the combustion head starts to ignite, and a nozzle injects oil to burn. When the air flow temperature inside the whole combustion chamber reaches (exceeds) the temperature for coal water slurry evaporation, firing and burning, a coal water slurry lance is started to inject the coal water slurry fuel to the primary combustion chamber. When the coal water slurry fuel burns stably, the work of the fuel system is stopped, and the coal water slurry continuously burns.

Description

technical field [0001] The invention relates to a combustion device for coal water slurry, in particular to a low volatile coal water slurry combustion device. Background technique [0002] Coal water slurry is a new type of coal-based slurry fuel, which can replace oil for combustion, and has the outstanding advantages of low pollution, high efficiency, energy saving, and low operating cost. The combustion technology of coal-water slurry instead of oil has been used since the 1980s, and some large-scale coal-water slurry production plants have also been formed in China. The volatile content of coal water slurry is an important factor for the stability of atomization combustion. When the volatile content is lower than 30%, there is not enough volatile content to burn in time during atomization combustion, and it is difficult to maintain the heat and temperature required for combustion, and the flame cannot be formed. . Because there are still many coals with a volatile con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/08F23D11/00F23D11/38F23D11/42
Inventor 李祥位
Owner GUIZHOU AERONAUTICAL ENGINE INST
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