CN215864699U

CN215864699U - Glass kiln exhaust-heat boiler denitration connecting flue equipment with ash discharging device

Info

Publication number: CN215864699U
Application number: CN202121469292.5U
Authority: CN
Inventors: 林仟国; 程立春; 杨玉慧
Original assignee: Jiangsu Dongjiu Heavy Industry Co ltd
Current assignee: Jiangsu Dongjiu Heavy Industry Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-02-18
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses glass kiln waste heat boiler denitration connecting flue equipment with an ash discharging device, and belongs to the technical field of design and manufacture of auxiliary equipment of thermal energy engineering. The glass kiln waste heat boiler denitration connecting flue equipment with the ash discharging device comprises a bottom smoke hood, a connecting pipe, the ash discharging device and a top smoke hood; the bottom end of the bottom smoke cover is communicated with the high-temperature heat exchange equipment of the glass kiln waste heat boiler, the side end of the bottom smoke cover is communicated with the flue of the denitration system, the top end of the top smoke cover is communicated with the low-temperature heat exchange equipment of the glass kiln waste heat boiler, the side end of the top smoke cover is communicated with the flue of the denitration system, and the bottom end of the top smoke cover is provided with an ash discharging device; the bottom smoke cover and the top smoke cover are communicated through the connecting pipe. The utility model solves the problems that in the prior art, flue gas of denitration connecting flue equipment is difficult to seal and easy to leak and the top smoke hood is accumulated with dust in the operation process of a glass kiln waste heat boiler denitration system.

Description

Glass kiln exhaust-heat boiler denitration connecting flue equipment with ash discharging device

Technical Field

The utility model relates to flue equipment, in particular to glass kiln waste heat boiler denitration connecting flue equipment with an ash discharging device.

Background

With the increasingly strict national requirements on air pollution control, the types of pollutants for limiting emission are gradually increased, and the emission control requirements of nitrogen oxides are clearly and forcibly implemented for many times. According to the production scale and the fuel use condition of the glass industry at present, the temperature in the glass melting furnace is about 1600 ℃, the emission temperature of flue gas of a main flue is distributed between 400 ℃ and 600 ℃, and Nitrogen Oxides (NO) in the flue gas are recovered while the waste heat of the flue gas is recovered in the general technology_x) Environmental protection treatment is carried out, and the industry is called flue gas denitration. A Selective Catalytic Reduction (SCR) is a common denitration process for glass kiln flue gas.

At present, a denitration connecting flue device of a waste heat boiler of a glass kiln is generally composed of a bottom smoke cover, a top smoke cover and an electric butterfly valve (shown in figure 3) communicated with the bottom smoke cover and the top smoke cover. In the actual operation process, the problems that an electric butterfly valve is not tight in sealing, smoke leaks, dust is accumulated at the bottom of a smoke hood at the top part is serious and the like exist, and the stable operation of a waste heat boiler and a denitration system is influenced. Therefore, the glass kiln waste heat boiler denitration connecting flue equipment which is strong in sealing and provided with the ash discharging device is developed through modern industrial equipment, and the glass kiln waste heat boiler denitration connecting flue equipment is imperative to the waste heat boiler and denitration system equipment industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide glass kiln waste heat boiler denitration connecting flue equipment with an ash discharging device, which solves the problems that in the operation process of a glass kiln waste heat boiler denitration system, flue gas of the denitration connecting flue equipment is difficult to seal and easy to leak, and a top smoke hood is accumulated with ash.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a glass kiln exhaust-heat boiler denitration connecting flue device with an ash discharging device comprises a bottom smoke hood, a connecting pipe, an ash discharging device and a top smoke hood; the bottom end of the bottom smoke hood is communicated with the high-temperature heat exchange equipment of the glass kiln waste heat boiler, and the side end of the bottom smoke hood is communicated with a flue of the denitration system; the top end of the top smoke hood is communicated with the low-temperature heat exchange equipment of the glass kiln waste heat boiler, the side end of the top smoke hood is communicated with a flue of the denitration system, and the bottom end of the top smoke hood is provided with an ash discharging device; the bottom smoke cover and the top smoke cover are communicated through the connecting pipe.

Preferably, the connecting pipe comprises a cylinder body and a movable cover plate; the upper part of the cylinder is connected with the bottom end of the top smoke hood, and the lower part of the cylinder is connected with the top end of the bottom smoke hood; before the glass kiln waste heat boiler is installed and debugged and put into use formally, the movable cover plate is welded and fixed at the top end of the cylinder in a sealing mode, and a passage formed by the communicating pipe can be cut off.

Preferably, the ash discharging device comprises an ash dropping pipe and a star-shaped ash discharging valve; the ash falling pipe is connected to the bottommost end of the top smoke hood and extends to the lower portion of the glass kiln waste heat boiler, and a star-shaped ash discharging valve is arranged at the outlet end of the ash falling pipe.

Preferably, the star-shaped ash discharge valve adopts a variable-frequency electric driving device.

The utility model has the beneficial effects that:

by adopting the denitration connecting flue equipment with the ash discharging device for the glass kiln waste heat boiler, which is disclosed by the technical scheme of the utility model, the movable cover plate is fixedly welded at the top end of the cylinder in a sealing manner, and the passage formed by the communicating pipes is cut off, so that the condition that the flue gas which is not subjected to denitration leaks into the denitration flue gas is effectively avoided; the dust falling from the bottom of the top smoke hood is continuously and timely discharged out of the furnace by arranging the dust discharging device, so that the dust accumulation condition of the top smoke hood is effectively avoided. The technical scheme of the utility model realizes no smoke leakage and no ash accumulation during the denitration operation of the waste heat boiler of the glass kiln, provides powerful technical guarantee for the efficient operation of the waste heat boiler of the glass kiln and a denitration system, and has better economic benefit and environmental protection benefit.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the connecting tube of the present invention;

FIG. 3 is a schematic structural diagram of denitration connecting flue equipment of a glass kiln waste heat boiler in the prior art;

in the figure: 1. the device comprises a bottom smoke hood, 2 connecting pipes, 3 an ash discharging device, 4 a top smoke hood, 5 a high-temperature heat exchange device, 6 a low-temperature heat exchange device, 7 an ash discharging pipe, 8 a star-shaped ash discharging valve, 9 a denitration system flue, 10 a cylinder, 11 a movable cover plate and 12 an electric butterfly valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described 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 of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The relative arrangement of the components and steps, expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations).

As shown in figure 1, the denitration connecting flue equipment of the glass kiln waste heat boiler with the ash discharging device comprises a bottom smoke hood 1, a connecting pipe 2, an ash discharging device 3 and a top smoke hood 4; the bottom end 1 of the bottom smoke hood is communicated with a high-temperature heat exchange device 5 of a glass kiln waste heat boiler, the side end of the bottom smoke hood is communicated with a denitration system flue 9, the top end of the top smoke hood 4 is communicated with a low-temperature heat exchange device 6 of the glass kiln waste heat boiler, the side end of the top smoke hood is communicated with the denitration system flue 9, and the bottom end of the top smoke hood is provided with an ash discharging device 3; the bottom smoke cover 1 and the top smoke cover 4 are communicated through the connecting pipe 2.

The connecting pipe 2 consists of a cylinder body 10 and a movable cover plate 11; the upper part of the cylinder body 10 is connected with the bottom end of the top smoke hood 4, and the lower part of the cylinder body is connected with the top end of the bottom smoke hood 1; before the glass kiln waste heat boiler is installed and debugged and put into use formally, the movable cover plate 11 is welded and fixed at the top end of the cylinder 10 in a sealing way, and a passage formed by the communicating pipe 2 is cut off.

The ash discharging device 3 consists of an ash dropping pipe 7 and a star-shaped ash discharging valve 8; the ash falling pipe 7 is connected to the lowest end of the top smoke hood 4 and extends to the lower portion of the waste heat boiler, and the outlet end of the ash falling pipe 7 is provided with a star-shaped ash discharging valve 8.

The star-shaped ash discharge valve 8 is a variable-frequency electric driving device.

When the waste heat boiler and the denitration system of the glass furnace are in operation, the flue gas from the main flue of the glass melting furnace is firstly reduced to a set temperature by the high-temperature heat exchange equipment 5 and then enters the bottom smoke hood 1, and then the bottom smoke hood 1 goes to the denitration system equipment through the denitration system flue 9; the flue gas returns to the top petticoat pipe 4 through the deNOx systems flue 9 after accomplishing the denitration in the deNOx systems equipment, later goes to low temperature heat exchange equipment 6 and accomplishes follow-up process flow.

Claims

1. A glass kiln exhaust-heat boiler denitration connecting flue device with an ash discharging device is characterized by comprising a bottom smoke hood, a connecting pipe, an ash discharging device and a top smoke hood; the bottom end of the bottom smoke hood is communicated with the high-temperature heat exchange equipment of the glass kiln waste heat boiler, and the side end of the bottom smoke hood is communicated with a flue of the denitration system; the top end of the top smoke hood is communicated with the low-temperature heat exchange equipment of the glass kiln waste heat boiler, the side end of the top smoke hood is communicated with a flue of the denitration system, and the bottom end of the top smoke hood is provided with an ash discharging device; the bottom smoke cover and the top smoke cover are communicated through the connecting pipe.

2. The glass kiln exhaust-heat boiler denitration connecting flue equipment with the ash discharging device as claimed in claim 1, wherein the connecting pipe comprises a cylinder and a movable cover plate; the upper part of the cylinder is connected with the bottom end of the top smoke hood, and the lower part of the cylinder is connected with the top end of the bottom smoke hood; before the glass kiln waste heat boiler is installed and debugged and put into use formally, the movable cover plate is welded and fixed at the top end of the cylinder in a sealing mode, and a passage formed by the communicating pipe can be cut off.

3. The glass kiln waste heat boiler denitration connecting flue equipment with the ash discharging device as set forth in claim 1, wherein the ash discharging device comprises an ash dropping pipe and a star-shaped ash discharging valve; the ash falling pipe is connected to the bottommost end of the top smoke hood and extends to the lower portion of the glass kiln waste heat boiler, and a star-shaped ash discharging valve is arranged at the outlet end of the ash falling pipe.

4. The glass kiln waste heat boiler denitration connecting flue equipment with the ash discharging device as claimed in claim 3, wherein the star-shaped ash discharging valve is a variable frequency type electric driving device.