CN202844899U

CN202844899U - Whirlwind-type ammonia-air mixer

Info

Publication number: CN202844899U
Application number: CN201220571110.XU
Authority: CN
Inventors: 胡宏兴; 翁卫国; 胡志健
Original assignee: HANGZHOU BEIGAOFENG ELECTRIC POWER ENGINEERING DESIGN Co Ltd
Current assignee: HANGZHOU BEIGAOFENG ELECTRIC POWER ENGINEERING DESIGN Co Ltd
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2013-04-03
Anticipated expiration: 2022-10-26

Abstract

The utility model discloses a whirlwind-type ammonia-air mixer which comprises a mixing barrel. One end of the mixing barrel is an air inlet and the other end is a mixed gas outlet. A plurality of whirlwind-type guide plates are arranged around the inner wall of the mixing barrel. An ammonia introducing pipe which comprises a longitudinal pipe and a horizontal pipe vertical with each other is arranged at the front end of the barrel body of the mixing barrel. The horizontal pipe is parallel with the mixing barrel and is arranged at the center of the mixing barrel. The other end of the horizontal pipe is sealed and a plurality of ammonia-spraying holes are distributed around the pipe body of the horizontal pipe. The design of the ammonia-introducing pipe and the ammonia-spraying holes enables the ammonia to be fully mixed with air when the ammonia is sprayed out. In addition, the whirlwind-type guide plates enable the mixed gas of ammonia and air to form swirling airflow, thus not only is the mixing effect good, but also the resistance to the gas in the mixing barrel is small, the outlet flow velocity is high and the effect of ammonia spraying of the next stage of ammonia spraying grid is good.

Description

Cyclone type ammonia air mixer

Technical field

The utility model relates to a kind of gas denitrifying technology field, relates more specifically to a kind of cyclone type ammonia air mixer for the selective catalytic reduction denitration technology.

Background technology

Common ammonia air mixer adopts the baffle-type blender, ammonia and air enter mixing drum together, collision reaction behind the chance baffle plate, thereby ammonia and air are mixed to a certain extent, not only mixed effect is undesirable, and baffle plate is large to air resistance in the mixing drum, reduces exit velocity, affects the spray ammonia effect of the ammonia-spraying grid of next stage.

Summary of the invention

The purpose of this utility model is, a kind of ammonia and air good mixing effect are provided, and the large cyclone type ammonia air mixer of mixed gas outlet flow velocity.

For realizing the purpose of this utility model, intend by the following technical solutions:

A kind of cyclone type ammonia air mixer, comprise mixing drum, mixing drum one end is air intake, and the other end is mixed gas outlet, it is characterized in that, described mixing drum periphery of inner wall is provided with some cyclone type deflectors, the mixing drum barrel front end is provided with the ammonia ingress pipe, and the ammonia ingress pipe is comprised of orthogonal longitudinal pipe and transverse pipe, and transverse pipe is parallel with mixing drum and be located at the center of mixing drum, be provided with some spray ammonia hole around the transverse pipe, the other end of transverse pipe is sealed end.

The utility model is designed to orthogonal longitudinal pipe and transverse pipe with the ammonia ingress pipe, transverse pipe is parallel with mixing drum and be located at the center of mixing drum, the other end of transverse pipe is sealed end, and be provided with some spray ammonia hole around the body of transverse pipe, ammonia enters mixing drum with the ammonia ingress pipe, from spray ammonia hole to ejection all around, fully mix with the air that enters from air intake, and the mixing drum periphery of inner wall is provided with the cyclone type deflector, the ammonia air Mixture forms swirling eddy by the cyclone type deflector, make mixing more abundant, relatively common baffle-type blender, not only mixed effect is better, and less to air resistance in the mixing drum, exit velocity is larger, and it is better to enter next stage ammonia-spraying grid spray ammonia effect.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the side structure schematic diagram of mixing drum in the utility model.

Label among the figure is, 1, the ammonia ingress pipe; 2, spray ammonia hole; 3, sealed end; 4, mixing drum; 5, cyclone type deflector; 6, air intake; 7, mixed gas outlet.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

In conjunction with Fig. 1, Fig. 2, a kind of cyclone type ammonia air mixer that present embodiment proposes, comprise mixing drum 4, mixing drum 4 one ends are air intake 6, the other end is mixed gas outlet 7, mixing drum 4 periphery of inner wall are provided with some cyclone type deflectors 5, mixing drum 4 barrel front end are provided with the ammonia ingress pipe, ammonia ingress pipe 4 is comprised of orthogonal longitudinal pipe and transverse pipe, transverse pipe and mixing drum 4 are parallel and be located at the center of mixing drum 4, the other end of transverse pipe is sealed end 3, and is provided with some spray ammonia hole 2 around the transverse pipe.

The design in ammonia ingress pipe 1 of the present utility model and spray ammonia hole 2, make ammonia enter mixing drum 4 with ammonia ingress pipe 1, from spray ammonia hole 2 to ejection all around, fully mix with the air that enters from air intake 6, and mixing drum 4 periphery of inner wall are provided with cyclone type deflector 5, the ammonia air Mixture forms swirling eddy by cyclone type deflector 5, make mixing more abundant, relatively common baffle-type blender, not only mixed effect is better, and less to mixing drum 4 interior air resistances, exit velocity is larger, and it is better to enter next stage ammonia-spraying grid spray ammonia effect.

Claims

1. a cyclone type ammonia air mixer comprises mixing drum, and mixing drum one end is air intake, and the other end is mixed gas outlet, it is characterized in that, described mixing drum periphery of inner wall is provided with some cyclone type deflectors; The mixing drum barrel front end is provided with the ammonia ingress pipe, the ammonia ingress pipe is comprised of orthogonal longitudinal pipe and transverse pipe, transverse pipe is parallel with mixing drum and be located at the center of mixing drum, is provided with some spray ammonia hole around the transverse pipe, and the other end of transverse pipe is sealed end.