CN214094448U

CN214094448U - High-temperature low-nitrogen environment-friendly type burn-out air system

Info

Publication number: CN214094448U
Application number: CN202022433736.1U
Authority: CN
Inventors: 陈烨
Original assignee: Jiangyin Chuangjie Electrical Equipment Co ltd
Current assignee: Jiangyin Chuangjie Electrical Equipment Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-08-31
Anticipated expiration: 2030-10-28

Abstract

The utility model relates to a high temperature low nitrogen environment-friendly burns out wind system includes main burner (1) and the burning out wind spout (5) of cartridge on the combustion chamber outer wall, burning out wind spout (5) are located the top of main burner (1), the combustion-supporting wind tuber pipe of main burner (1) communicates to the air outlet of combustion-supporting wind fan (2) through total tuber pipe (6), and the air outlet of combustion-supporting wind fan (2) installs total air door (3), air damper (4) are installed to the combustion-supporting wind tuber pipe air intake of main burner (1), the intercommunication has one to burn out tuber pipe (7) on the pipe wall of total tuber pipe (6), and this burns out tuber pipe (7) and communicates to burning out wind spout (5). The utility model relates to a high temperature hangs down nitrogen environment-friendly burns out wind system can be under the prerequisite that does not reduce thermal conversion efficiency, reduce nitrogen oxide formation by a wide margin.

Description

High-temperature low-nitrogen environment-friendly type burn-out air system

Technical Field

The utility model relates to a high temperature low nitrogen environment-friendly burns out wind system belongs to the combustion technology field.

Background

At present, nitrogen oxides are inevitably generated in the combustion process of a combustion chamber of a boiler, a kiln or the like, and particularly in a state of only one main burner, it is a conventional practice to introduce a large amount of combustion air to maximize heat conversion efficiency. However, studies have shown that an increase in oxygen content can create or enhance an oxidizing atmosphere for combustion in the combustion chamber, increase the supply of oxygen, and promote the conversion of nitrogen in the fuel to nitrogen oxides; when the oxygen content is insufficient, oxygen is consumed by combustible components in the fuel, the material condition of the reaction of nitrogen and oxygen is destroyed, the content of thermal nitrogen oxide is reduced, the content of fuel nitrogen oxide is still increased, the content of nitrogen oxide is reduced, but the combustion is insufficient, so that the heat conversion efficiency is reduced; therefore, a new system for reducing the content of nox and maintaining or improving the heat conversion efficiency is needed.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide one kind at least can not reduce under the prerequisite of thermal conversion efficiency, reduce nitrogen oxide formation volume's high temperature low nitrogen environment-friendly burns out wind system by a wide margin.

The purpose of the utility model is realized like this:

the utility model provides a high temperature low nitrogen environment-friendly burns out air system, includes cartridge main burner and the burning out air spout on the combustion chamber outer wall, burning out air spout is located main burner's top, main burner's combustion-supporting air tuber pipe communicates to the air outlet of combustion-supporting air fan through total tuber pipe, and the air outlet of combustion-supporting air fan installs total accuse air door, main burner's combustion-supporting air tuber pipe air intake is installed and is adjusted the air door, the intercommunication has a burning out tuber pipe on the pipe wall of total tuber pipe, should burn out the tuber pipe and communicate to burning out air spout.

The utility model relates to a low nitrogen environment-friendly of high temperature fires ember air system, main burner has evenly arranged a plurality ofly around the combustion chamber, it has evenly arranged a plurality ofly around the combustion chamber to fire ember wind spout, and each fires ember wind spout and is located main burner's top, and main burner and the crisscross setting each other of firing ember wind spout promptly to make the second grade burning more be abundant and even.

The utility model relates to a high temperature low nitrogen environment-friendly type burning out air system, the system also comprises a control system, the control system comprises an industrial personal computer, a main sensor and an auxiliary sensor, the main sensor and the auxiliary sensor are respectively inserted on the outer wall of the combustion chamber above the main burner and the burning out air nozzle; signal wires of the main sensor and the auxiliary sensor are connected to an industrial personal computer, and a control wire of the industrial personal computer is communicated to the master control air door and the adjusting air door; therefore, the industrial personal computer can adjust the air introduction amount at the main burner and the burn-out air nozzle in real time according to the measurement data of the main sensor and the auxiliary sensor.

Furthermore, another kind of high temperature low nitrogen environment-friendly type burns out the ability air system can implement the mode, this moment this system include cartridge in the outer wall of combustion chamber on main burner and burn out the ability wind spout, burn out the ability wind spout and be located the top of main burner, main burner's combustion-supporting wind pipe communicates to the air outlet of combustion-supporting wind fan through total tuber pipe, and the air outlet of combustion-supporting wind fan installs total accuse air door, the intercommunication has a cooling air pipe on the pipe wall of total tuber pipe, and this cooling air pipe communicates to the one end of the outer wall of the cooling cylinder of main burner, and the other end of the outer wall of the cooling cylinder of this main burner is pegged graft and is had a burn out the ability tuber pipe, and this burn out the ability tuber pipe communicates to burn out the ability wind spout, and wears to connect with the air damper on the ability tuber pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a design of main burner and burning out wind spout provides non-sufficient oxygen to main burner region to postpone the mixing of buggy and oxygen, cause the oxygen deficiency of burning center, can make most volatile matter nitrogen and partial coke nitrogen turn into N₂Thereby reducing the content of nitrogen oxides; meanwhile, after the combustion-supporting oxygen is introduced into the burning-out air nozzle, the combustible components can continue to react at high temperature due to the high-temperature environment, and the heat transfer is ensuredThe heat exchange efficiency avoids the generation of new nitrogen oxides, thereby reducing the generation of nitrogen oxides while not reducing the heat conversion efficiency and having positive environmental protection benefits.

Drawings

Fig. 1 is a schematic diagram of the high-temperature low-nitrogen environment-friendly burnout air system of the utility model.

Wherein:

the device comprises a main burner 1, a combustion-supporting air fan 2, a master control air door 3, a regulating air door 4, a burning-out air nozzle 5, a master air pipe 6 and a burning-out air pipe 7;

a main sensor 101 and an auxiliary sensor 102.

Detailed Description

Referring to fig. 1, the utility model relates to a high temperature low nitrogen environment-friendly type burn-out air system, including main burner 1 and burn-out air spout 5 inserted on the outer wall of the combustion chamber, the burn-out air spout 5 is located above the main burner 1, the combustion-supporting air pipe of the main burner 1 is communicated to the air outlet of the combustion-supporting air blower 2 through the main air pipe 6, and the air outlet of the combustion-supporting air blower 2 is provided with a main control air door 3, the air inlet of the combustion-supporting air pipe of the main burner 1 is provided with an adjusting air door 4, the pipe wall of the main air pipe 6 is communicated with a burn-out air pipe 7, and the burn-out air pipe 7 is communicated to the burn-out air spout 5;

when in use, the total air volume is introduced through the total control air door 3, then the air which is lower than the theoretically required volume is input through the adjusting air door 4 according to calculation, and the rest air is introduced into the burnout air nozzle 5 through the burnout air pipe 7 for secondary combustion; the principle is to complete the combustion process in the fuel chamber in stages; air less than the theoretical amount of air is fed into the zone in charge of the main burner 1, the fuel in the combustion chamber is combusted under fuel-rich conditions, the temperature level in the combustion zone is reduced, and simultaneously a reducing atmosphere is formed to reduce the generation of nitrogen oxides; at this time, the ember air nozzle 5 is arranged above the main burner 1, and the introduction of the ember air can provide enough oxygen to ember unburned carbon from the reduction zone, thereby ensuring the combustion efficiency and reducing the carbon content of fly ash.

Furthermore, a plurality of main burners 1 are uniformly arranged around the combustion chamber, a plurality of after-combustion air nozzles 5 are uniformly arranged around the combustion chamber, and each after-combustion air nozzle 5 is positioned above the space between two adjacent main burners 1, namely, the main burners 1 and the after-combustion air nozzles 5 are arranged in a staggered manner, so that secondary combustion is more sufficient and uniform;

further, the system also comprises a control system, wherein the control system comprises an industrial personal computer, a main sensor 101 and an auxiliary sensor 102, and the main sensor 101 and the auxiliary sensor 102 are respectively inserted into the outer wall of the combustion chamber above the main combustor 1 and the burning air nozzle 5; signal lines of the main sensor 101 and the auxiliary sensor 102 are connected to an industrial personal computer, and control lines of the industrial personal computer are communicated to the master control air door 3 and the adjusting air door 4; therefore, the industrial personal computer can adjust the air introduction amount of the main burner 1 and the after-combustion air nozzle 5 in real time according to the measurement data of the main sensor 101 and the auxiliary sensor 102; the control logic is that the required theoretical air quantity is calculated according to the dye type and the specification of the combustion chamber, then the theoretical air quantity is introduced through the master control air door 3, then the required combustion-supporting air quantity on the master combustion burner 1 is calculated according to the distance between the master combustion burner 1 and the burning-out air nozzle 5 and the real-time combustion condition (temperature and the generation quantity of nitrogen oxides) known by the master sensor 101 and the auxiliary sensor 102, the regulation is carried out through the regulating air door 4, the rest air is subjected to secondary combustion through the burning-out air nozzle 5, and the whole regulation process is a feedback regulation process and can be circularly finely regulated according to the actual condition until the optimal state is reached (namely the generation quantity of the nitrogen oxides and the thermal conversion efficiency are in a relatively reasonable range).

In addition the utility model relates to a high temperature low nitrogen environment-friendly burns out the wind system and can also have another deformation scheme, and its concrete structure is: the system comprises a main burner 1 and a burnout air nozzle 5 which are inserted on the outer wall of a combustion chamber, wherein the burnout air nozzle 5 is positioned above the main burner 1, a combustion-supporting air pipe of the main burner 1 is communicated with an air outlet of a combustion-supporting air fan 2 through a main air pipe 6, a main control air door 3 is arranged at the air outlet of the combustion-supporting air fan 2, a cooling air pipe is communicated with the pipe wall of the main air pipe 6 and is communicated with one end of the outer wall of a cooling cylinder of the main burner 1, a burnout air pipe 7 is inserted at the other end of the outer wall of the cooling cylinder of the main burner 1, the burnout air pipe 7 is communicated with the burnout air nozzle 5, and a regulating air door 4 is penetrated on the burnout air pipe 7; therefore, the burning-in air in the burning-in air nozzle 5 is preheated by the cooling cylinder of the main burner 1, the cooling effect is achieved, the temperature of the burning-in air is improved, and the secondary combustion effect is further improved. At the moment, the control system is similar, and the air volume between the two is changed according to the real-time parameters.

In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims

1. The utility model provides a high temperature low nitrogen environment-friendly burns out wind system which characterized in that: include main burner (1) and the burn-out air spout (5) of cartridge on the combustion chamber outer wall, burn-out air spout (5) and be located the top of main burner (1), the combustion-supporting air tuber pipe of main burner (1) communicates to the air outlet of combustion-supporting air fan (2) through total tuber pipe (6), and the air outlet of combustion-supporting air fan (2) installs total accuse air door (3), air damper (4) are installed to the combustion-supporting air tuber pipe air intake of main burner (1), the intercommunication has a burn-out tuber pipe (7) on the pipe wall of total tuber pipe (6), and this burn-out tuber pipe (7) communicates to burn-out air spout (5).

2. The high temperature, low nitrogen, environmentally friendly ember air system of claim 1, wherein: main burner (1) have evenly arranged a plurality ofly around the combustion chamber, burn out wind spout (5) and evenly arranged a plurality ofly around the combustion chamber, and each burns out wind spout (5) and is located the top that corresponds main burner (1), and main burner (1) and the setting of staggering each other of burning out wind spout (5) promptly.

3. The high temperature, low nitrogen, environmentally friendly ember air system of claim 1, wherein: the system also comprises a control system, wherein the control system comprises an industrial personal computer, a main sensor (101) and an auxiliary sensor (102), and the main sensor (101) and the auxiliary sensor (102) are respectively inserted into the outer wall of the combustion chamber above the main combustor (1) and the ember air nozzle (5); and the signal lines of the main sensor (101) and the auxiliary sensor (102) are connected to an industrial personal computer, and the control line of the industrial personal computer is communicated to the master control air door (3) and the adjusting air door (4).

4. The utility model provides a high temperature low nitrogen environment-friendly burns out wind system which characterized in that: include main burner (1) and the burn-out air spout (5) of cartridge on the combustion chamber outer wall, burn-out air spout (5) and be located the top of main burner (1), the combustion-supporting air tuber pipe of main burner (1) communicates to the air outlet of combustion-supporting air fan (2) through total tuber pipe (6), and the air outlet of combustion-supporting air fan (2) installs total accuse air door (3), the intercommunication has a cooling air pipe on the pipe wall of total tuber pipe (6), and this cooling air pipe communicates to the one end of the outer wall of the cooling cylinder of main burner (1), and the other end of the outer wall of the cooling cylinder of this main burner (1) is pegged graft and is had a burn-out tuber pipe (7), and should burn-out tuber pipe (7) communicate to burn-out air spout (5), and burn-out and have on (7) cross-under regulation air door (4).