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SZL front-mounted biomass boiler assembly

Front-mounted assembled biomass boiler Applicable fuel: Straw and other scattered biomass fuels, formed biomass fuels; Fuel size generally requires no more than 50×30×10mm (length×width×thickness) or rod-shaped fuel mmφ30×50 (length×diameter), a small amount of length of 50-100mm is allowed, the total moisture generally requires no more than 25%, the maximum does not exceed 30%, for pressed formed fuel, the size generally requires no more than 30×30×10mm, the total moisture generally requires no more than 15%. This type of boiler can use chain grate or reciprocating grate according to the fuel. Special design: 1. Furnace, secondary air: Due to the low density, low calorific value, high volatile matter and high moisture content of biomass fuel, biomass boilers are quite different from general coal-fired boilers. First of all, they need a larger combustion space and sufficient height so that the fuel has sufficient combustion time in the furnace. At the same time, sufficient secondary air is arranged in layers at a certain height in the furnace to adapt to the concentrated release and combustion of a large amount of volatile matter, ensure that the combustible matter and air are fully mixed and burned, and enable the combustible matter to be completely burned in the furnace. 2. Heating surface, soot blower arrangement: Because biomass fuel contains high K and Cl, the ash after combustion contains a large amount of alkali metal salts such as KCl and KCO3. These salts have low melting points and are easy to accumulate on the heating surface. This requires the use of different arrangement methods from general coal furnaces when designing the heating surface to structurally reduce the ash accumulation on the heating surface. At the same time, these ashes have strong adhesion, and it is difficult to remove these ashes with conventional ultrasonic soot blowers. Steam soot blowers should be arranged at appropriate positions in the boiler. In addition, due to the presence of Cl in biomass fuel, the corrosion of the tail heating surface is increased, and special consideration needs to be given to the structure and material selection of the last-stage heating surface to avoid or reduce the corrosion of the tail heating surface.

Category:

Biomass boiler

Tel:

+86-371-86210626

E-mail:

zdboiler@126.com

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Descriptions

The SZL furnace front biomass boiler is developed by the company using new technologies. The boiler has many advantages such as sufficient output, high thermal efficiency, stable and reliable operation, strong overload capacity, wide fuel applicability, and energy saving and environmental protection.

1. The furnace front structure completely overcomes the phenomenon of overheating and bulging caused by the boiler drum being directly exposed to the furnace, and the arrangement of the heating surface is more reasonable.

2. The membrane water wall structure is adopted on both sides of the furnace, which ensures the airtightness of the furnace and improves the boiler thermal efficiency.

3. At the heat receiving surface of the boiler convection tube bundle and economizer, the soot blower interface is reserved. For special fuels (especially those with strong binding properties), necessary measures can be taken to prevent problems before they occur.

4. The inverted "α" type furnace arch technology is adopted, which improves the fuel combustion characteristics and has the characteristics of wide coal adaptability and high combustion efficiency.

5. The furnace arch adopts a water-cooled arch structure, which increases the rigidity and stability of the furnace arch and prolongs the service life of the furnace arch.

6. When the SZL furnace front assembled biomass boiler uses a reciprocating grate, the grate and the fuel have relative motion, suitable for burning biomass loose materials with higher moisture and ash content and lower calorific value.

Boiler products can be designed according to user needs

 

Key words:

SZL front-mounted biomass boiler assembly

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DHL angular tube biomass boiler

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SZL type assembled biomass boiler

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+86-15638138867

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