CN216716942U

CN216716942U - Drying room tail gas recycling and purifying structure

Info

Publication number: CN216716942U
Application number: CN202123174586.8U
Authority: CN
Inventors: 刘胤
Original assignee: Kunshan Sichuang Refractory Material Co ltd
Current assignee: Kunshan Sichuang Refractory Material Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-10
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a drying room tail gas recycling and purifying structure which comprises a baking kiln, a smoke exhaust pipeline, a heat insulation layer, a rotatably arranged flow control plate, a sensor and a combustion fan, wherein the smoke exhaust pipeline is used for connecting an exhaust port of the baking kiln to the baking kiln, the heat insulation layer is coated outside the smoke exhaust pipeline, the flow control plate is arranged in the smoke exhaust pipeline, the sensor is arranged on the smoke exhaust pipeline and used for detecting temperature and air pressure, and the combustion fan is arranged on the smoke exhaust pipeline behind the flow control plate. The utility model realizes that the tail gas pipeline of the baking kiln is connected with the blast pipeline of the high-temperature kiln to participate in the firing process of the high-temperature firing kiln, thereby avoiding air pollution and saving energy.

Description

Drying room tail gas recycling and purifying structure

Technical Field

The utility model belongs to the technical field of refractory material manufacturing, and particularly relates to a drying room tail gas recycling and purifying structure.

Background

Most of the baking kilns of refractory material manufacturing enterprises can use natural gas of clean energy as a heat source to bake semi-finished products, the heating temperature of the baking kilns is about 300 ℃, although natural gas combustion products are pollution-free, refractory material binder resin can produce a certain amount of formaldehyde and phenol when baking, air can be polluted, meanwhile, waste gas discharged out of the kilns after baking contains a large amount of heat, and waste of a certain energy source can be generated.

In the past, refractory enterprises can directly discharge waste gas generated by baking, or a tail gas absorption device is additionally arranged at an air outlet of a baking kiln, but the exhaust gas discharge rate is limited after the tail gas absorption device is additionally arranged, if the exhaust gas is discharged too fast, a small amount of harmful gas is discharged into the air under the condition that absorption liquid and active carbon in the tail gas absorption device are not absorbed in time, and a large amount of heat in the waste gas is wasted; in addition, the absorption liquid and the activated carbon in the tail gas absorption device have high use cost and poor economic benefit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a drying room tail gas recycling and purifying structure, so that a tail gas pipeline of a baking kiln is connected to a blast pipeline of a high-temperature kiln to participate in the firing process of a high-temperature firing kiln, air pollution is avoided, and energy is saved. In order to achieve the purpose, the technical scheme of the utility model is as follows:

drying room tail gas recycles purification structure, including the baking kiln, connect the gas vent of baking kiln to the exhaust pipe of burning the kiln, cladding in the outside heat preservation of exhaust pipe, locate the rotatable setting of exhaust pipe accuse and flow the board, install the sensor that is used for detecting temperature and wind pressure on the exhaust pipe and locate the combustion fan on the exhaust pipe behind the accuse board.

Specifically, the baking kiln comprises a kiln body, a baking groove arranged in the kiln body and used for placing refractory materials, and a plurality of heating pipelines communicated into the baking groove.

Specifically, each heating pipeline's front end is connected with the natural gas burning jar, is equipped with the air-blower on the anterior segment pipeline of natural gas burning jar, insert the natural gas intake pipe on the natural gas burning jar.

Specifically, a through rotating shaft is arranged in the smoke exhaust pipeline, a flow control plate is installed on the rotating shaft, and the outer end of the rotating shaft is connected with a motor for driving the rotating shaft to rotate.

Specifically, the flow control plate is arranged corresponding to the inner diameter of the smoke exhaust pipeline.

Specifically, the temperature in the firing kiln is higher than the temperature in the baking kiln.

Compared with the prior art, the drying room tail gas recycling and purifying structure has the beneficial effects that:

the smoke exhaust pipeline is connected to the baking kiln and is led into the firing kiln, so that harmful gases such as formaldehyde, phenol and the like discharged by baking of the refractory material are fully combusted, and energy waste caused by the adoption of a tail gas filtering device in the prior art is avoided; the smoke exhaust pipeline is provided with a rotatable flow control plate, the flow control plate is in information interconnection with a sensor for detecting temperature and wind pressure, and when the wind pressure in the smoke exhaust pipeline is overlarge, the airflow passing area of the smoke exhaust pipeline is reduced by reducing the power of a combustion fan and the rotation angle of the flow control plate, so that the proper wind pressure in the smoke exhaust pipeline is ensured; when the temperature in the smoke exhaust pipeline is too low, the rotation angle of the flow control plate reduces the airflow passing area of the smoke exhaust pipeline, energy storage is carried out in the smoke exhaust pipeline for a certain time, and the temperature entering the firing kiln cannot be too low so as to avoid increasing the energy consumption of the firing kiln; the whole smoke exhaust pipeline is easy to build, harmful gas is purified, energy is recycled, and energy consumption of equipment is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the smoke exhaust duct of the present embodiment;

the figures in the drawings represent:

the device comprises a baking kiln 1, a kiln body 11, a baking groove 12, a heating pipeline 13, a natural gas combustion tank 14, a blower 15, a natural gas inlet pipe 16, a baking kiln 2, a smoke exhaust pipeline 3, a heat insulation layer 31, a flow control plate 4, a rotating shaft 41, a motor 42, a sensor 5 and a combustion-supporting fan 6.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example (b):

referring to fig. 1-2, the present embodiment is a drying room tail gas recycling and purifying structure, which includes a baking kiln 1, a smoke exhaust pipe 3 connecting an exhaust port of the baking kiln 1 to the baking kiln 2, a heat insulating layer 31 covering the outside of the smoke exhaust pipe 3, a rotatably disposed flow control plate 4 disposed in the smoke exhaust pipe 3, a sensor 5 mounted on the smoke exhaust pipe 3 for detecting temperature and wind pressure, and a combustion fan 6 disposed on the smoke exhaust pipe 3 behind the flow control plate 4.

The baking kiln 1 comprises a kiln body 11, a baking groove 12 which is arranged in the kiln body 11 and used for placing refractory materials, and a plurality of heating pipelines 13 which are led into the baking groove 12; the front end of each heating pipeline 13 is connected with a natural gas combustion tank 14, a front-section pipeline of the natural gas combustion tank 14 is provided with an air blower 15, and a natural gas inlet pipe 16 is connected to the natural gas combustion tank 14.

A through rotating shaft 41 is arranged in the smoke exhaust pipeline 3, a flow control plate 4 is arranged on the rotating shaft 41, and the flow control plate 4 is arranged corresponding to the inner diameter of the smoke exhaust pipeline 3. The outer end of the rotary shaft 41 is connected to a motor 42 for driving the rotary shaft to rotate. Motor 42 and sensor 5 are connected to the PLC controller respectively, and the PLC controller receives wind pressure and temperature in the exhaust pipe 3 that sensor 5 detected, according to the exhaust pipe 3 wind pressure and the temperature parameter that the system set for, the rotational parameter of PLC controller control motor to the suitable wind pressure in the exhaust pipe 3 is guaranteed to the open and shut angle of control flow board 4.

The temperature in the firing kiln 2 is higher than the temperature in the baking kiln 1, and the temperature in the firing kiln 2 is 1200 ℃.

When the embodiment is used, the refractory material is baked in the baking kiln 1, a certain amount of harmful gas is emitted from the product, the harmful gas enters the firing kiln 2 through the smoke exhaust pipeline 3, the harmful gas is completely burned out at high temperature in the firing kiln 2, meanwhile, the air flow led in from the baking kiln 1 can be used as combustion-supporting air of the firing kiln 2, and the energy consumption of the firing kiln 2 is reduced.

In the embodiment, the smoke exhaust pipeline 3 is connected to the baking kiln 1 and is led into the baking kiln 2, so that harmful gases such as formaldehyde, phenol and the like discharged by baking refractory materials are fully combusted, and energy waste caused by the traditional adoption of a tail gas filtering device is avoided; a rotatable flow control plate 4 is arranged on the smoke exhaust pipeline 3, the flow control plate 4 is in information interconnection with a sensor 5 for detecting temperature and wind pressure, and when the wind pressure in the smoke exhaust pipeline 3 is overlarge, the airflow passing area of the smoke exhaust pipeline 3 is reduced by reducing the power of a combustion fan and the rotation angle of the flow control plate, so that the proper wind pressure in the smoke exhaust pipeline 3 is ensured; when the temperature in the smoke exhaust pipeline 3 is too low, the rotation angle of the flow control plate 4 reduces the airflow passing area of the smoke exhaust pipeline 3, energy storage is carried out in the smoke exhaust pipeline 3 for a certain time, and the temperature entering the firing kiln 2 cannot be too low so as to avoid increasing the energy consumption of the firing kiln 2; the integral smoke exhaust pipeline 3 is easy to build, purifies harmful gas, recycles energy and reduces energy consumption of equipment.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims

1. Drying room tail gas reuse purification structure, its characterized in that: including the baking kiln, connect the exhaust port of baking kiln to the exhaust pipe of burning kiln, cladding in the outside heat preservation of exhaust pipe, locate the rotatable accuse stream board that sets up in the exhaust pipe, install the sensor that is used for detecting temperature and wind pressure on the exhaust pipe and locate the combustion fan on the exhaust pipe behind the accuse stream board.

2. The drying room tail gas recycling and purifying structure according to claim 1, characterized in that: the baking kiln comprises a kiln body, a baking groove arranged in the kiln body and used for placing refractory materials, and a plurality of heating pipelines communicated into the baking groove.

3. The drying room tail gas recycling and purifying structure according to claim 2, characterized in that: each the front end of heating pipeline is connected with the natural gas burning jar, is equipped with the air-blower on the anterior segment pipeline of natural gas burning jar, insert the natural gas intake pipe on the natural gas burning jar.

4. The drying room tail gas recycling and purifying structure according to claim 1, characterized in that: a through rotating shaft is arranged in the smoke exhaust pipeline, a flow control plate is installed on the rotating shaft, and the outer end of the rotating shaft is connected with a motor for driving the rotating shaft to rotate.

5. The drying room tail gas recycling and purifying structure according to claim 1, characterized in that: the flow control plate is arranged corresponding to the inner diameter of the smoke exhaust pipeline.

6. The drying room tail gas recycling and purifying structure according to claim 1, characterized in that: the temperature in the firing kiln is higher than the temperature in the baking kiln.