Primary air coal dust airflow gasification device of boiler for ignition and stabilization of combustion of boiler

A boiler ignition and gasification device technology, which is applied to the gasification of granular/powdered fuels, the combustion of gaseous fuels and powdered fuels, and the manufacture of combustible gases. It can solve problems such as complex systems, high failure rates, and large equipment. Achieve the effects of sufficient response, enhanced peak shaving ability, and reduced minimum stable combustion load

Inactive Publication Date: 2017-11-07
章英慧
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Problems solved by technology

[0005] The purpose of the present invention is to provide a boiler primary air pulverized coal airflow gasification device for boiler ignition and stable combustion, so as to solve the problems of large equipment, complex system and high failure rate in the prior art

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  • Primary air coal dust airflow gasification device of boiler for ignition and stabilization of combustion of boiler
  • Primary air coal dust airflow gasification device of boiler for ignition and stabilization of combustion of boiler

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Embodiment Construction

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0022] see figure 1 , figure 2 , a boiler primary air pulverized coal airflow gasification device for boiler ignition and stable combustion, including a cyclone separator 1, a Laval mixer 2, a gasification reactor 3, and a central pipe 4 arranged on the top of the cyclone separator 1 ;

[0023] The upper part of the cyclone separator 1 is tangentially symmetrically provided with a first inlet pipe 101 and a second inlet pipe 102, and the second inlet pipe 102 communicates with the outlet of the gasification reactor 3; the bottom of the cyclone separator 1 is provided with a straight pipe 103 It communicates with the throat of the Laval mixer 2; the outlet side of the Laval mixer 2 communicates with the inlet of the gasification reactor 3 through a conne...

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Abstract

The invention provides a primary air coal dust airflow gasification device of a boiler for ignition and stabilization of combustion of the boiler. The device comprises a cyclone separator, a Rafa mixer, a gasification reactor and a central tube arranged on the top of the cyclone separator. A first inlet tube and a second inlet tube are symmetrically formed in the upper portion of the cyclone separator tangentially and the second inlet tube communicates with the outlet of the gasification reactor; a straight tube which is arranged in the bottom of the cyclone separator communicates with a throat of the Rafa mixer; and one side of the outlet of the Rafa mixer communicates with the inlet of the gasification furnace through a connecting pipeline. The coal dust airflow is gasified before entering the boiler by means of an external energy source. In addition, high-temperature flue gas of the part is extracted from the outlet of the hearth of the boiler and a part of heat is released in the hearth of the boiler. Compared with a technology of gasifying the coal dust by other forms of energy sources such as electric energy, flue gas waste heat of the boiler is fully used, so that the device is better in economical benefit.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a boiler primary air pulverized coal flow gasification device for boiler ignition and stable combustion. Background technique [0002] Boiler ignition and low-load stable combustion need to consume a large amount of oil resources such as light diesel oil and heavy oil. Reducing the consumption of oil resources is of great significance to improving the economics of power plant operation; in order to achieve this purpose, plasma ignition technology, micro (less) ignition technology, pulverized coal gasification technology. [0003] The essence of plasma ignition and micro (less) ignition technology is: the introduction of external energy to heat the pulverized coal flow in the burner and make it gasified to meet the requirements of boiler ignition and low-load stable combustion; but these two technologies are used Ultra-high energy density performs high-intensity rapid g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48B01D45/16F23C1/12
CPCB01D45/16C10J3/48C10J3/82F23C1/12Y02P20/129
Inventor 章英慧
Owner 章英慧
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