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Nozzle device for smoke injection system

A technology of nozzle device and spray system, which is applied in the directions of spray device, spray device, dispersed particle separation, etc., to achieve the effect of improving operation reliability, reducing investment cost and reducing mixing distance

Active Publication Date: 2013-07-17
浙江博众数智科技创新集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many of the above-mentioned solutions are mostly to enhance the disturbance effect, it is difficult to ensure the anti-blocking effect of the nozzle, and the processing difficulty is relatively high

Method used

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  • Nozzle device for smoke injection system
  • Nozzle device for smoke injection system
  • Nozzle device for smoke injection system

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Embodiment Construction

[0017] For ease of understanding, the present invention will be described in detail below with reference to the accompanying drawings, taking a selective catalytic reduction (SCR) flue gas denitrification system as an example. In the selective catalytic reduction (SCR) flue gas denitrification system, what is injected from the injection port 4 of the injection chamber 3 and mixed with the flue gas is a reducing agent gas, such as a mixed gas of ammonia and air; The connected "main pipe" can be called "reductant main pipe"; the "main pipe" that supplies reductant gas to the injection chamber or the reducing agent main pipe can be called "reductant main pipe".

[0018] exist Figure 1 to Figure 3 The shown nozzle arrangement for a flue gas injection system consists essentially of an injection body 7 . The injection body 7 is provided with an injection chamber 3, and the injection chamber 3 communicates with the reducing agent main pipe 1. The reducing agent gas from the reducin...

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Abstract

The invention discloses a nozzle device for a smoke injection system. The nozzle device for the smoke injection system comprises an injection body provided with an injection cavity, wherein the end face of the injection opening of the injection cavity is parallel to the main airflow direction of smoke; the opening direction of the injection opening faces to the inner wall of a flue; airflow injected from the injection opening is circular; and the direction of the airflow injected from the injection opening and the main airflow direction of the smoke form an included angle of 105-165 degrees. According to the nozzle device for the smoke injection system provided by the invention, the mixing effect of the airflow injected by a nozzle and the smoke can be improved through novel and specific nozzle structural design, so that the turbulent flow effect and the mixing effect can be enhanced, the nozzle device for the smoke injection system is beneficial to saving mixing time, and the mixing distance of the smoke and the airflow injected from the nozzle is reduced. Therefore, the investment cost of the smoke injection system is reduced, and the efficiency of the smoke injection system is improved. The nozzle device provided by the invention further can be used for preventing the nozzle from blocking, so that the operation reliability of the system is greatly improved.

Description

technical field [0001] The invention relates to a nozzle device, which can be applied to flue gas discharge systems of various combustion equipment, and is especially suitable for a selective catalytic reduction (SCR) flue gas denitrification system. [0002] Background technique [0003] Nitrogen oxides in the tail gas of coal-fired boilers and similar devices are one of the main pollutants in the atmosphere, and it has become a top priority for air pollution control in my country. For the treatment of NOx, the selective catalytic reduction (SCR) flue gas denitrification process is mainly used at home and abroad. This process has high denitrification efficiency and no secondary pollution, and is widely used in various combustion equipment. For the SCR flue gas denitrification process, the uniform diffusion and mixing of diluted ammonia gas and flue gas is the key factor to ensure the complete reaction, improve the denitrification efficiency and ammonia utilization rate, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56B05B1/06
Inventor 文雅金晶马志刚李松张殷
Owner 浙江博众数智科技创新集团有限公司
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