Low nitrogen transformation, to buy a low nitrogen steam generator, which brand to buy?

There are many brands of steam generators, and there are many manufacturers that produce and sell low-nitrogen equipment.

Low nitrogen steam generators.

1. Manufacturer qualification. Now the steam generator market is more chaotic, there are many brands, if you want to buy the best low-nitrogen steam generator, it is recommended to choose a manufacturer with a special equipment manufacturing license.

2. Price. If you are more interested in price, it will be easier to do, and whoever is cheaper will choose whom, but the quality is generally linked to the price.

3. Equipment stability. From the structural layout of the entire plant to the cutting of each steel plate, these are the details that need to be paid attention to to produce a stable and high-quality steam generator, especially for low-nitrogen steam generators.

4. If you look at the after-sales guarantee in the middle and later stages, you must not only be near, but also choose a manufacturer with perfect after-sales service, because no matter how good the equipment is, there is a problem.

Low nitrogen steam generator manufacturers.

The low-nitrogen steam generator uses natural gas as fuel and uses a low-nitrogen burner, which has lower emissions than conventional oil-fired gas steam generators, and the nitrogen oxide emissions are as low as less than 30 milligrams.

To sum up, in the low-nitrogen transformation, to buy a low-nitrogen steam generator, the choice of brand can not be judged from a single side, it should be the result of comprehensive trade-offs in many aspects, and it should be selected in combination with its own conditions and needs, and the right one is good.

If it is an ordinary enterprise, it is recommended to buy it at a comparative price; If it's a job.

industry, it is recommended to use a premixed coiled steam generator, this kind of furnace.

High security and stability. Imported ones such as Clayden, domestic ones such as.

Repton.

Hebei Ronghua environmental protection equipment, master the core technology of oil-fired gas low-nitrogen burners, HBUNB series gas burners are divided into 2T, 4T, 6T, 10T, 15T and other models. Partial premixing, fuel classification, air classification, flue gas recirculation technology, and Siemens high-safety level controller are used for control components, and the combustion chamber flow field is optimized through reasonable design of the burner, reducing the combustion temperature, and ensuring combustion stability, so as to achieve the purpose of reducing NOx emissions. After repeated CFD simulations and a large number of on-site tests, the R&D test from 2T to 20T has been completed, and the emission data have all reached the standard, the emission indicators have reached the domestic and international leading level, and the nitrogen oxide emission is as low as 30mg m3, which is in line with the newly released Beijing boiler air pollutant emission standard in 2015.

The burner adopts a special combustion controller to monitor the gas pressure, air duct pressure, damper position, combustion flame, boiler water level and other elements designed for safety in real time to ensure combustion safety. The burner adopts three-electronic ratio adjustment to accurately control the amount of gas, air and recirculating flue gas, ensure the air-fuel ratio of the burner at different loads, realize the continuous adjustment of the burner load, and ensure the stability of combustion and NOx emissions under different loads.

--- low-nitrogen burner usually refers to a burner with NOx emissions at 30 to 80 mg; NOx emissions below 30 mg are commonly referred to as ultra-low nitrogen burners;

Low-nitrogen burners are often based on the following technologies:

1.Electronic proportional adjustment and oxygen content control technology to accurately control oxygen content;

2.Full premixed surface combustion technology to reduce flame temperature and achieve full combustion;

flue gas recirculation technology to reduce flame temperature and oxygen content;

Petaz low-nitrogen burner.

Fidax solutions for FGR NOx emissions.

In order to reduce nitrogen oxide emissions, the external recirculation technology of combustion products has been further improved, which can reduce the flame temperature and oxygen concentration, as oxygen (O2) and nitrogen (N2) in the air combine in a variety of ways to form nitrogen oxides (NOx) during high-temperature combustion.

Feida has realized that only by strengthening this application type can the technical limitations of some industrial and civil applications be overcome, and only by designing burners with low NOx emissions, today, the stepless developed by Feidas. The FGR of the graded flue gas recirculation system, which can be used to significantly reduce NOx emissions, can also be applied to existing equipment, either as an integrated burner or as a two-module burner. The installation of the FGR system on the integrated burner ensures the reliability of the solution and the effectiveness of the results, the correct circuit layout in the engineering solution that ensures both types of burners.

Geometry. Pipe inclination. condensate discharge, etc.

What is a Low Nitrogen Burner? Let's find out.

The low-nitrogen burner is a device that integrates the traditional burner to increase the blower, induced draft fan, inverter, control valve and multiple circuits to make clean energy and burner operation provide more efficient heat energy for the boiler, the burner is an important equipment on the industrial oil-fired boiler and gas boiler, which ensures the stable combustion of the fuel and the complete combustion of the fuel, so it is necessary to start from the burner to inhibit the generation of NOx. Low NOx burners are broadly divided into the following categories:

1. Stage burner.

The staged burner designed according to the principle of staged combustion can be mixed with fuel and air in stages, and the generation of NOx can be reduced due to the deviation of combustion from the theoretical equivalent ratio.

2. Self-recirculating burner.

One is to use the pressure head of the combustion air to suck back part of the combustion smoke, enter the burner, and mix with the air for combustion. Due to the recirculation of the flue gas, the heat capacity of the combustion flue gas is large, the combustion temperature is reduced, and the NOx is reduced.

3. Thick and light burner.

The principle is that one part of the fuel is burned too thickly, and the other part of the fuel is over-burned, but the overall air volume remains the same. Since both parts are burned at a deviation from the chemical equivalent ratio, the NOx is low, which is also known as deviation combustion or non-chemical equivalent combustion.

4. Split flame burner.

The principle is to divide a flame into several small flames, because the small flame heat dissipation area is large, the flame temperature is low, so that the "thermal reaction NO" has decreased. In addition, the flame is small and shortens the residence time of oxygen, nitrogen and other gases in the flame, and has obvious inhibitory effect on "thermal reaction NO" and "fuel NO".

5. Mixing promotion burner.

The residence time of flue gas in the high temperature area is one of the main factors affecting the generation of NOx, and improving the mixing of combustion and air can reduce the thickness of the flame surface, and shorten the residence time of the flue gas in the flame surface, that is, in the high temperature area under the condition of constant combustion load, so that the generation of NOx can be reduced. The hybrid-promoting burner is designed according to this principle.

6. Low NOx pre-combustion chamber burner.

The pre-combustion chamber is a high-efficiency, low-NOx staged combustion technology developed and researched in China in the past 10 years, the pre-combustion chamber is generally composed of a primary air and a fuel injection system, the fuel and a primary air are quickly mixed, and a fuel-rich mixture is formed in the primary combustion zone of the pre-combustion chamber, due to the lack of oxygen, only part of the fuel is burned, and the fuel precipitates volatiles in the primary flame area of the poor oxygen and the lower flame temperature, thus reducing the generation of NOx.

That's all for today's sharing, I hope it can help you.

1. Vanderley low-nitrogen burner does not have any requirements for the structure of the boiler, and it can be installed directly.

2. The emission is stable, and the metal surface combustion technology can adjust the emission to about 15 mg. And it can be achieved at all times.

3. The noise of the burner of the full premixed surface combustion technology is low during operation.

4. The burner of fully premixed metal surface combustion technology can ensure that the output of the boiler is equal to the original or even slightly larger in any of the boilers transformed.

5、.The low-nitrogen burner with full premixed surface combustion technology has been proven in Western European countries for about 20 years, and its stability is very good.

Vanderley low-nitrogen metallic fiber surface burner.

Technical Performance:

Single-stage fire, two-stage fire, two-stage fire progressive proportional adjustment can be adapted to any type of combustion chamber.

Air and gas are mixed in the burnerhead.

By adjusting the combustion air and burner head, the optimal combustion parameters can be obtained.

The mixing unit can be removed without removing the burner from the boiler, which can be easily serviced.

Servo motors are used to carry out the first phase.

The air flow of the first and second stages is regulated, and when.

When the burner is stopped, the damper closes to reduce heat loss in the furnace.

A valve seal control can be added to the manifold.

A flange and an insulating sealing ring are used to connect and fix with the boiler; Comes with a 4-hole and 7-hole coupling.

Blower ducts larger than standard lengths are available upon request.

Improve the combustion efficiency and reduce the nitrogen oxide content, and the low-nitrogen burner transformation of Wuhan Yude Boiler Technology Research Institute greatly improves the thermal efficiency of the boiler while reducing the nitrogen content, and can also make the NOx content in the flue gas less than 50mg nm, the CO smaller than 10mg nm, the excess air coefficient is less than that, and the turndown ratio reaches 20:1. Meets emission standards.