CN212383441U

CN212383441U - Mixed flue for household garbage incineration flue gas purification system

Info

Publication number: CN212383441U
Application number: CN202020472707.3U
Authority: CN
Inventors: 唐跃武; 张伟; 常博; 杨吉涛; 明勇
Original assignee: Sichuan Guangda Energy Saving And Environmental Protection Investment Co ltd
Current assignee: Sichuan Nengtou Energy Conservation And Environmental Protection Investment Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-01-22
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a mixed flue for domestic waste burns gas cleaning system, including vertical flue gas pipeline, the last flue gas hybrid tube that is equipped with of flue gas pipeline, flue gas hybrid tube is the venturi tubulose, from down and constitute by convergent section, throat pipeline section, divergent section in proper order, the contained angle of convergent section is 80-100, the contained angle of divergent section is 45-60, be equipped with on the choke and draw the ejector pipe, still be equipped with the expansion joint on the flue gas pipeline, the expansion joint is located flue gas hybrid tube below. Compared with the prior art, the utility model discloses with current flue gas pipeline design into venturi's structure, utilize venturi's principle, realize that the take pollutant flue gas intensive mixing in medicament and the flue gas pipeline adsorbs and the neutralization reaction to make flue gas emission up to standard. Greatly improves the emission standard of the flue gas, increases the reaction efficiency, reduces the medicament consumption and further reduces the operation cost.

Description

Mixed flue for household garbage incineration flue gas purification system

Technical Field

The utility model relates to a flue gas pipeline equipment especially relates to a mixed flue for domestic waste burns gas cleaning system.

Background

When the flue gas in the flue gas pipeline needs to be treated in field operation, activated carbon and slaked lime are generally sprayed into the flue gas pipeline, and the activated carbon and the slaked lime are mixed with the flue gas in a flue to perform adsorption and neutralization reactions, so that the flue gas is discharged up to the standard.

However, the existing flue gas pipeline is a straight pipe, and after the activated carbon and the slaked lime are sprayed into the flue gas pipeline, the activated carbon and the slaked lime are not uniformly dispersed enough, so that the medicament sprayed into the flue gas pipeline and pollutants in the flue gas cannot be better combined, and the full adsorption and neutralization reaction can be achieved. In order to meet the emission standard, a large amount of chemicals needs to be added, and the cost expenditure is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solve above-mentioned problem and be used for domestic waste to burn flue gas purification system's mixed flue, enable in the medicament that spouts and the flue gas pollutant intensive mixing in flue gas pipeline even, improve the fume emission quality.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a mix flue for domestic waste burns gas cleaning system, includes vertical flue gas pipeline, be equipped with flue gas mixing pipe on the flue gas pipeline, flue gas mixing pipe is the venturi tubulose, from down and constitute by convergent section, larynx pipeline section, gradual expansion section in proper order, the contained angle of convergent section is 80-100, the contained angle of gradual expansion section is 45-60, be equipped with on the choke and draw and penetrate the pipe, still be equipped with the expansion joint on the flue gas pipeline, the expansion joint is located flue gas mixing pipe below.

Preferably, the included angle of the tapered section is 90 °, and the included angle of the diverging section is 50 °.

Preferably, the upper end and the lower end of the flue gas mixing pipeline are both provided with connecting flanges, and the flue gas mixing pipeline is fixedly connected with the flue gas pipeline through the connecting flanges.

Preferably, the upper end of the expansion joint is fixedly connected with the reducing section of the flue gas mixing pipeline through a connecting flange, and the lower end of the expansion joint is fixedly connected with the flue gas pipeline through a connecting flange.

Preferably, still be equipped with the vortex pole in the flue gas pipeline, the vortex pole is located the flue gas pipeline of flue gas mixing duct top, the vortex pole transversely sets up in flue gas pipeline, and vortex pole both ends weld on flue gas pipeline inner wall.

Preferably, the number of the turbulence rods is 1-5, and the turbulence rods are arranged in the smoke pipeline in a vertically staggered mode.

Compared with the prior art, the utility model has the advantages of: the utility model discloses with current flue gas pipeline design venturi's structure, utilize venturi's principle, realize that the take pollutant flue gas intensive mixing in medicament and the flue gas pipeline adsorbs and the neutralization reaction to make flue gas emission up to standard. Greatly improves the emission standard of the flue gas, increases the reaction efficiency, reduces the medicament consumption and further reduces the operation cost. And the expansion joint is additionally arranged, so that the problem of increasing the axial stress caused by a gradually-reduced structure is solved, and the overall structural strength is improved. The turbulence rod is additionally arranged in the flue gas pipeline, so that turbulence is formed, the contact time and the contact area of the medicament and the flue gas are increased, and the purification efficiency is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the section a-a of the present invention.

In the figure: 1. a flue gas duct; 2. a flue gas mixing pipeline; 21. a tapered section; 22. a throat section; 23. a gradual expansion section; 24. an injection pipe; 3. an expansion joint; 4. a spoiler bar; 5. and connecting the flanges.

Detailed Description

The present invention will be further explained below.

Example 1: referring to fig. 1 and 2, a mixing flue for a household garbage incineration flue gas purification system comprises a vertical flue gas pipeline 1, wherein a flue gas mixing pipeline 2 is arranged on the flue gas pipeline 1, the flue gas mixing pipeline 2 is in a venturi tube shape and sequentially comprises a reducing section 21, a throat section 22 and a gradually expanding section 23 from bottom to top, the included angle of the reducing section 21 is 80-100 degrees, the included angle of the gradually expanding section 23 is 45-60 degrees, an injection pipe 24 is arranged on the throat, flue gas containing pollutants is contracted in the reducing section 21 and enters the throat section 22, and the throat section 22 is sprayed with active carbon and slaked lime from the injection pipe 24 and is mixed with the flue gas containing pollutants for adsorption and neutralization reaction, so that the flue gas is discharged up to the standard, the reaction efficiency is increased, the medicament consumption is reduced, and the operation cost is reduced. Still be equipped with expansion joint 3 on the flue gas pipeline 1, expansion joint 3 is located flue gas mixing pipe 2 below, 3 upper ends of expansion joint pass through flange 5 and flue gas mixing pipe 2's convergent section 21 fixed connection, 3 lower extremes of expansion joint pass through flange 5 and flue gas pipeline 1 fixed connection, because the design of 2 front end convergent sections 21 of flue gas mixing pipe, can make axial junction produce tensile stress, specially add a section of expansion joint 3 and reduce axial tensile stress, improve its life.

In the specific implementation process, the diameter of the flue gas pipeline 1 and the length of the flue gas mixing pipeline 2 are determined according to the flue gas discharge amount of field equipment, the included angle of the tapered section 21 is set to be 90 degrees, the included angle of the gradually expanding section 23 is set to be 50 degrees, the flue gas speed at the inlet of the tapered section 21 is controlled to be 15-18m/s, the flue gas speed of the throat section 22 is controlled to be 35-45m/s, the flue gas speed of the gradually expanding section 23 is controlled to be 15-18m/s, and at the moment, the row adsorption and neutralization reaction efficiency in the flue is high.

Both ends all are equipped with flange 5 about flue gas hybrid pipeline 2, flue gas hybrid pipeline 2 passes through flange 5 and flue gas pipeline 1 fixed connection, and flange 5's connected mode is favorable to the installation to dismantle the maintenance, and flange 5 junction adopts the sealing ring to seal, avoids the flue gas to leak. Certainly, the flue gas mixing pipeline 2 can be welded with the flue gas pipeline 1 into a whole in a direct welding mode, so that the problem of flue gas leakage cannot be caused at the joint of the flange 5, but the welding seam is easy to corrode and damage after long-term use, and the maintenance is inconvenient.

Still be equipped with vortex rod 4 in flue gas pipeline 1, vortex rod 4 is located flue gas pipeline 1 of 2 tops of flue gas mixing duct, vortex rod 4 transversely sets up in

flue gas pipeline

1, and 4 both ends of vortex rod weld on 1 inner walls of flue gas pipeline. The number of the turbulence rods 4 is 1-5, and the turbulence rods are arranged in the flue gas pipeline 1 in a vertically staggered mode. The turbulence rod 4 disturbs the smoke in the smoke pipeline 1, so that the residence reaction time of the smoke in the smoke pipeline 1 is prolonged, and sufficient reaction time is provided for adsorption and neutralization reaction of the medicament.

The above description is made in detail for the mixed flue for the flue gas purification system of the household garbage incineration, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; while the invention has been described in terms of specific embodiments and applications, it will be apparent to those skilled in the art that numerous variations and modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a mix flue for domestic waste burns gas cleaning system, includes vertical flue gas pipeline, its characterized in that: the smoke mixing pipeline is arranged on the smoke pipeline and is in a Venturi tube shape, and the smoke mixing pipeline sequentially comprises a reducing section, a throat section and a gradually expanding section from bottom to top, wherein the included angle of the reducing section is 80-100 degrees, the included angle of the gradually expanding section is 45-60 degrees, an injection pipe is arranged on the throat pipe, an expansion joint is further arranged on the smoke pipeline, and the expansion joint is located below the smoke mixing pipeline.

2. The mixing flue for the household garbage incineration flue gas purification system as claimed in claim 1, wherein: the included angle of the gradually-reducing section is 90 degrees, and the included angle of the gradually-expanding section is 50 degrees.

3. The mixing flue for the household garbage incineration flue gas purification system as claimed in claim 1, wherein: and the upper end and the lower end of the flue gas mixing pipeline are both provided with connecting flanges, and the flue gas mixing pipeline is fixedly connected with the flue gas pipeline through the connecting flanges.

4. The mixing flue for the household garbage incineration flue gas purification system as claimed in claim 3, wherein: the upper end of the expansion joint is fixedly connected with the reducing section of the flue gas mixing pipeline through a connecting flange, and the lower end of the expansion joint is fixedly connected with the flue gas pipeline through a connecting flange.

5. The mixing flue for the household garbage incineration flue gas purification system as claimed in claim 1, wherein: still be equipped with the vortex pole in the flue gas pipeline, the vortex pole is located the flue gas pipeline of flue gas mixing duct top, the vortex pole transversely sets up in flue gas pipeline, and vortex pole both ends weld on flue gas pipeline inner wall.

6. The mixing flue for the household garbage incineration flue gas purification system as claimed in claim 5, wherein: the number of the turbulence rods is 1-5, and the turbulence rods are arranged in the flue gas pipeline in a vertically staggered mode.