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Novel denitration nozzle base, multinozzle denitration spray gun barrel and denitration spray gun

A multi-nozzle and nozzle technology, applied in multi-nozzle denitrification spray gun shaft and denitrification spray gun, new denitrification nozzle base field, can solve the problems of low denitration efficiency and poor denitration effect, achieve uniform fluid atomization, consistent flow rate, and improved denitrification efficiency Effect

Active Publication Date: 2017-01-25
SHANGHAI RYE SPRAYING INTELLIGENT SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of poor denitrification effect and low denitrification efficiency in the prior art, the present invention provides a novel denitrification nozzle base, multi-nozzle denitrification spray gun shaft and denitrification spray gun

Method used

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  • Novel denitration nozzle base, multinozzle denitration spray gun barrel and denitration spray gun
  • Novel denitration nozzle base, multinozzle denitration spray gun barrel and denitration spray gun

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 It is a schematic structural diagram of a new denitration nozzle base shown in an embodiment of the present invention, including a nozzle base 1, a nozzle 2, a liquid pipe 3, and an air inlet 4, wherein,

[0045] The nozzle base 1 is provided with a cavity with an open end;

[0046] The nozzle 2 is sealed and arranged at the opening of the cavity, and the through hole in the nozzle 2 communicates with the space in the cavity;

[0047] The liquid pipe 3 runs through the cavity of the nozzle base 1, and the liquid pipe 3 and the nozzle base 1 are sealed;

[0048] The liquid pipe 3 is provided with a through hole 3-1 on the outer wall of the cavity of the nozzle base 1, and the through hole 3-1 communicates with the cavity of the nozzle base 1;

[0049] The bottom end of the nozzle base 1 is provided with an air inlet 4 , and the air inlet 4 communicates with the inner space of the liquid pipe 3 passing through the cavity of the nozzle base 1 .

[0050] Prefera...

Embodiment 2

[0055] figure 2 It is a structural schematic diagram of a denitrification spray gun provided by the present invention, including a multi-nozzle denitrification spray gun shaft, and the denitrification spray gun shaft includes several nozzle bases 1 as described in Example 1, a gas-liquid distribution body 5, and a liquid pipe 3 , the first casing 6, wherein,

[0056] The several nozzle bases 1 are sequentially sealed and connected along the horizontal direction, and the internal spaces communicate with each other;

[0057] The gas-liquid distribution body 5 includes a reducing agent inlet 5-1 and a compressed air inlet 5-2;

[0058] The first sleeve 6 is arranged outside the liquid pipe 3;

[0059] The reducing agent inlet 5-1 is sealedly connected to the left end of the liquid pipe 3 through the liquid flow pipe 5-3 provided in the horizontal direction of the gas-liquid distribution body 5, and the internal space communicates with each other;

[0060] The compressed air i...

Embodiment 3

[0064] figure 2 It is a structural schematic diagram of a denitrification spray gun provided by the present invention. The denitration spray gun includes a gas-liquid distribution body 5 arranged in sequence, and a liquid that is sealed and connected with a liquid flow pipe 5-3 arranged in the horizontal direction of the gas-liquid distribution body 5. Pipe 3, the first casing 6 arranged on the outside of the liquid pipe 3, the liquid pipe 3 is provided with a nozzle base 1, and the nozzle base 1 is equipped with a nozzle 2; wherein,

[0065] The gas flow pipe 5-4 arranged in the horizontal direction of the gas-liquid distribution body 5 is sealedly connected with the left end of the first sleeve 6 and the internal space communicates with each other;

[0066] The nozzle base 1 is provided with a cavity with an open end;

[0067] The nozzle 2 is sealed and arranged at the opening of the cavity, and the nozzle 2 communicates with the space in the cavity;

[0068] The liquid p...

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Abstract

The invention relates to the technical field of waste gas treatment and particluarly relates to a novel denitration nozzle base, a multinozzle denitration spray gun barrel and a denitration spray gun. According to the denitration spray gun, a reduction agent liquid enters into the denitration spray gun through a reduction agent inlet, flows along the inner wall of a liquid pipe and is sprayed out through a through hole in the liquid pipe; compressed air enters into a first sleeve through a compressed air inlet, is sprayed out through air inlets formed in the bottom ends of the nozzle bases, is mixed and atomized into 40-80mu m fine fogdrops in cavities of the nozzle bases, and then enters into the nozzles so as to be sprayed out. Since the inner diameter of the through hole in the liquid pipe and the inner diameter of the air inlet are quite small; under a condition that 3-5 nozzle bases are arranged, the liquid is sprayed out through the through hole in the liquid pipe, gas is sprayed through the air inlets formed in the bottom ends of the nozzle bases and then is mixed in the cavities of the nozzle bases, so that the pressure in a whole gun body is basically kept stable, the flow of each nozzle of the spray gun is consistent, flow atomization is quite uniform, and the denitration efficiency is obviously improved.

Description

technical field [0001] The invention relates to the technical field of exhaust gas treatment equipment, in particular to a novel denitration nozzle base, a multi-nozzle denitration spray gun shaft and a denitration spray gun. Background technique [0002] At present, industries such as thermal power plants and waste incineration plants need to use circulating fluidized bed boilers, coal-fired boilers and gas-fired boilers for production. The flue gas emitted by these boilers must be denitrified. When using coal-fired boilers for power generation less than 600MW, especially pulverized coal boilers, due to the NO X The emission reaches 400~600mg / nm 3 Even higher, making SNCR (Selective non-catalytic reduction, selective non-catalytic reduction) unable to meet the denitrification requirements, so only SCR (Selective Catalytic Reduction, selective catalytic reduction) process or SNCR+SCR combined process can be used. [0003] SNCR+SCR joint process, that is, the front part use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56B01D53/86
CPCB01D53/8631B01D53/90
Inventor 吕银根
Owner SHANGHAI RYE SPRAYING INTELLIGENT SYST
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