Premixing device and micro gas turbine

A technology of premixing and mixing fuels, which is applied in combustion chambers, combustion methods, combustion equipment, etc., and can solve problems such as poor premixing uniformity, high local combustion temperature, and high NOx emissions.

Inactive Publication Date: 2018-01-23
新奥能源动力科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under the current pre-mixing technology, the mixing of fuel and air is not uniform enough, resulting in localized combustion and high temperature, resulting in more NOx emissions
In addition, when the fuel injection pressure of the main combustion stage is not enough, the fuel penetration depth is small, which makes the premixing uniformity worse, and also leads to more NOx emissions

Method used

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  • Premixing device and micro gas turbine
  • Premixing device and micro gas turbine
  • Premixing device and micro gas turbine

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Embodiment Construction

[0025] 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.

[0026] Such as figure 1 as well as image 3 As shown, a premixing device 1 is used for mixing fuel and air. The fuel includes duty grade fuel and main combustion grade fuel, and includes a housing. The housing includes a front plate 20, a rear plate 18 and a front plate 20 and a rear plate A plurality of swirl blades 14 connected by 18, a plurality of swirl blades 14 are evenly arranged along the circumference of the front plate 20 to form an air inlet, the c...

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Abstract

The invention relates to the field of energy system design and discloses a premixing device and a micro gas turbine. The premixing device is used for mixing fuel and air, wherein the fuel comprises pilot-stage fuel and primary-stage fuel. The premixing device comprises a shell. The shell comprises a front plate, a rear plate and a plurality of rotational flow blades connected with the front plateand the rear plate. The multiple rotational flow blades are evenly arranged in the circumferential direction of the front plate to form an air inlet, and the center of the front plate is provided witha pilot-stage fuel inlet. A primary-stage fuel inlet is formed in the edge of the end face of the end, connected with the rotational flow blades, of the rear plate, and a mixed gas outlet is formed in the other end of the rear plate. The primary-stage fuel is sprayed in towards an upper plate, more distributed around the interior of the shell and less distributed in the middle of the shell, the pilot-stage fuel is sprayed in towards a lower plate, less distributed around the interior of the shell and more distributed in the middle of the shell, therefore, uniformity of mixing of the pilot-stage fuel, the primary-stage fuel and the air can be improved through the premixing device, the structure is simple, and operation is convenient.

Description

technical field [0001] The invention relates to the field of energy system design, in particular to a premixing device and a micro gas turbine. Background technique [0002] In the field of energy technology, micro gas turbines are widely used due to their compact structure, light weight, and low maintenance costs. Concern, and the laws and regulations and related policies related to the control of pollutant emissions have been continuously introduced, and people have put forward higher and higher requirements for the energy efficiency of micro gas turbines and the emission of combustion pollutants. [0003] The combustion products of micro gas turbines contain NOx (nitrogen oxides), mainly including NO (nitrogen monoxide) and NO2 (nitrogen dioxide). Among them, NO is a colorless and odorless gas. When the concentration of NO reaches a certain level, it will The combination of hemoglobin in the blood causes blood hypoxia and central nervous paralysis; NO2 is a red poisonous...

Claims

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Application Information

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IPC IPC(8): F23R3/28F23R3/14
Inventor 汪秋笑李成勤赵光军杜磊郭荣荣周强民王威威
Owner 新奥能源动力科技(上海)有限公司
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