CN217236483U

CN217236483U - Novel smoke hood of sintering machine circulating smoke process

Info

Publication number: CN217236483U
Application number: CN202123348947.6U
Authority: CN
Inventors: 王飞; 毛瑞; 许源; 苏航
Original assignee: Zhangjiagang Hongchang Steel Plate Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Current assignee: Zhangjiagang Hongchang Steel Plate Co Ltd; Jiangsu Shagang Iron and Steel Research Institute Co Ltd
Priority date: 2021-12-27
Filing date: 2022-05-09
Publication date: 2022-08-19
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a novel petticoat pipe of sintering machine circulation flue gas technology, including the flue gas cover body and with the air inlet structure of flue gas cover body intercommunication, the air inlet structure includes: a circulating flue gas pipe; one end of the circulating flue gas shunt pipe is communicated with the circulating flue gas pipe, is positioned right above the smoke hood and is parallel to the axial direction of the hood body; one end of the circulating flue gas branch pipe is communicated with the circulating flue gas shunt pipe, and the other end of the circulating flue gas branch pipe is communicated with the flue gas cover body. The smoke hood of the smoke circulation process changes the single-side air inlet mode of the existing smoke hood into air inlet right above the smoke hood, so that a smoke flow field in the smoke hood is distributed in central symmetry in the radial direction of the smoke hood.

Description

Novel smoke hood for sintering machine circulating smoke process

Technical Field

The utility model relates to a sintering equipment technical field, concretely relates to novel petticoat pipe of sintering circulation flue gas technology.

Background

In the iron and steel united enterprise, the sintering is essential raw materials processing link, can produce a large amount of high temperature flue gas in sintering process, wherein contains harmful substance such as dust, sulfur dioxide, nitrogen oxide, dioxin, and the flue gas is discharged the atmosphere and can cause serious pollution to the environment, and simultaneously, a large amount of heats can be taken away to outer flue gas of arranging and the waste of energy has been caused. The sintering circulation flue gas process can reduce the discharge amount of harmful substances of the sintering machine, simultaneously can recover partial heat energy, and reduces the energy consumption of sintered ores.

The sintering circulating flue gas process is to introduce part of hot flue gas generated by sintering into the sintering process again after dedusting for recycling. By improving the device or the process, the sintering production can be stabilized, the proportion of recovered waste heat can be improved, and harmful substances can be decomposed again, so that the aim of reducing the emission of the harmful substances is fulfilled. In the process of introducing hot flue gas into a sintering machine, the distribution uniformity of the hot flue gas directly influences the heat distribution in the sintering machine and the stability of product quality.

The structure of the circulating flue gas inlet hood of the existing sintering machine is shown in figure 1. Hot flue gas passes through a flue gas pipeline (5) and then is sprayed into the flue gas cover body (1) of the sintering machine from one side of the flue gas cover body (1) through a flue gas connecting pipe (6). The circulating flue gas inlet hood of the existing sintering machine has the following defects: (a) a smoke pipeline (5) is arranged on one side, hot smoke is sprayed into the smoke hood through a connecting pipe (6), the hot smoke deflects to one side, so that the temperature of the smoke sucked on one side in the width direction of the sintering machine is high, the temperature of the smoke sucked on one side is low, and the sintering process is influenced; (b) the circulating hot flue gas is unevenly distributed on the width of the sintering machine, so that the quality of the sintered ore fluctuates, the heat utilization efficiency is reduced, and the energy recovery is incomplete.

Disclosure of Invention

A primary object of the present invention is to provide a novel smoke hood for circulating flue gas of a sintering machine to solve the problem of uneven distribution of circulating flue gas in the smoke hood in the prior art. In order to realize the above purpose, the utility model provides a circulation flue gas petticoat pipe of sintering machine, including the flue gas cover body and with the air inlet structure of the flue gas cover body intercommunication, the air inlet structure includes: a circulating flue gas pipe; one end of the circulating flue gas shunt pipe is communicated with the circulating flue gas pipe, is positioned right above the hood body and is parallel to the axial direction of the hood body; one end of the circulating flue gas branch pipe is communicated with the circulating flue gas shunt pipe, the other end of the circulating flue gas branch pipe is communicated with the position right above the cover body and is vertical to the axial direction of the cover body, and the circulating flue gas can be distributed in a central symmetry mode in the radial direction of the cover body.

Compared with the prior art, the invention has the advantages that:

use the technical scheme of the utility model, circulation flue gas pipe is with the leading-in circulation flue gas shunt tubes of the hot flue gas that circulates, and the setting of circulation flue gas shunt tubes is directly over the cover body, and its axial direction is parallel with the axial direction of the cover body to be in same vertical plane. The hot flue gas that gets into circulation flue gas shunt tubes passes through the leading-in cover of circulation flue gas branch pipe internal, the central axial of circulation flue gas branch pipe is perpendicular with the axial of circulation flue gas pipe and the cover body, and the width direction of circulation flue gas branch pipe and the cover body axial are also mutually perpendicular, the whole radial length that the width size of circulation flue gas branch pipe and cover body intercommunication department can cover the cover body basically, so the utility model discloses a can guarantee that the flue gas spouts into directly over the flue gas cover body, and make hot flue gas be central symmetric distribution on the radial length of the cover body, the mode that current flue gas pipeline unilateral will circulate the leading-in petticoat pipe of flue gas has been improved, be favorable to the flue gas flow field at the internal evenly distributed of flue gas cover.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

In the drawings:

fig. 1 and 2 are schematic structural diagrams of a conventional single-side air inlet circulating flue gas hood.

Fig. 3 and 4 are schematic structural diagrams of a sintering circulation gas-carrying hood of the embodiment of the invention.

Wherein the figures include the following reference numerals:

1. a flue gas hood body; 2. a circulating flue gas pipe; 3. a circulating flue gas shunt pipe; 4. circulating flue gas branch pipes; 5. a flue gas duct; 6. flue gas connecting pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art.

Referring to fig. 3, a sintering circulation flue gas technology petticoat pipe of the embodiment of the utility model, including the flue gas cover body 1 and the air inlet structure who communicates with this flue gas cover body 1. The air inlet structure includes: a circulating flue gas pipe 2, a circulating flue gas shunt pipe 3 and a circulating flue gas branch pipe 4. One end of the circulating flue gas shunt pipe 3 is communicated with the circulating flue gas pipe 2, is positioned right above the cover body 1 and is parallel to the axial direction of the cover body 1; the circulating flue gas branch pipe 4, its one end with circulating flue gas shunt tubes 3 intercommunication, the other end with the intercommunication of the cover body 1, the central axial of circulating flue gas branch pipe 4 and the axial of circulating flue gas pipe 2 and the cover body 1 are perpendicular, and the width direction of circulating flue gas branch pipe 4 and the cover body 1 axial are also mutually perpendicular, and the width size of the circulating flue gas branch pipe 4 and the cover body 1 intercommunication department can cover the whole radial length of the cover body 1 basically.

Foretell petticoat pipe of circulation flue gas is through circulation flue gas pipe 2 leading-in circulation flue gas shunt tubes 3 with hot flue gas, and circulation flue gas shunt tubes 3 make hot flue gas can follow the leading-in circulation flue gas branch pipe 4 in the center directly over the petticoat pipe 1, and the width of circulation flue gas branch pipe 4 can cover almost whole petticoat pipe 1's radial length, can make leading-in hot flue gas radially be central symmetry distribution at petticoat pipe 1. The original smoke hood single-side air inlet mode is changed into the air inlet mode of smoke from the center right above the smoke hood, so that the smoke flow field is favorably and uniformly distributed in the smoke hood body 1, the sintering quality is further improved, the uniformity of heat distribution in the smoke hood body 1 is improved, and the energy recovery is favorably realized. In order to ensure that the circulating flue gas is uniformly distributed in the radial direction of the housing 1 after being introduced from the circulating flue gas branch pipe 4, the width dimension of the circulating flue gas branch pipe 4 is required to cover the radial length of the whole housing 1 as much as possible.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. The utility model provides a novel petticoat pipe of sintering machine circulation flue gas technology, including the flue gas cover body (1) with the air inlet structure of flue gas cover body (1) intercommunication, its characterized in that, the air inlet structure includes:

a circulating flue gas pipe (2); one end of the circulating flue gas shunt pipe (3) is communicated with the circulating flue gas pipe (2), is positioned right above the cover body (1), and has an axial direction parallel to the axial direction of the cover body (1) and is positioned in the same vertical plane; circulation flue gas branch pipe (4), its one end with circulation flue gas shunt tubes (3) intercommunication, the other end with the intercommunication of the cover body (1), the central axial of circulation flue gas branch pipe (4) and the axial of circulation flue gas pipe (2) and the cover body (1) are perpendicular, and the width direction of circulation flue gas branch pipe (4) and the cover body (1) axial also mutually perpendicular, and the whole radial length of the cover body (1) can be covered basically to the width size of circulation flue gas branch pipe (4) and cover body (1) intercommunication department, can make the circulation flue gas be central symmetric distribution on the cover body radial direction.