Structure and performance characteristics:
1) Adopt double pot, vertical, natural circulation, loose assembly, scale-type chain grate.
2) The furnace design adopts a blast furnace with high water cooling structure. Dense drainage cold walls are arranged on the four sides of the lower part of the boiler.
The radiation heating surface is combined; combined with the air distribution system organization in the furnace to adapt to the aerodynamic field of the biomass in the furnace, so as to achieve low-temperature and high-efficiency low-oxygen combustion, so as to achieve a sufficient combustion and low nitrogen emissions. Because the combustion temperature in the furnace and the grate surface is effectively controlled, coking of the grate can be avoided and the adaptability to different biomass fuels can be improved.
3) The boiler is arranged outside the primary air, and another unique secondary air technology of Lanhe is set up to effectively organize the flue gas field in the hearth to ensure the full combustion of fuel and meet the combustion characteristics of large volatile biomass.
4) Equipped with explosion-proof door to effectively relieve pressure and protect the furnace wall.
5) The biomass-specific small-scale chain grate is used for mechanized feeding. It has uniform air distribution and prevents fuel from leaking into the air chamber for combustion, protects the grate, and increases the service life of the grate. The reducer that matches the chain grate is a stepless electromagnetic speed reducer, which has a customized speed ratio to achieve thin material , Fast rotating speed, make the combustion surface of the grate even, the fire bed has good air permeability, can effectively prevent the coke of the grate and inhibit the generation of nitrogen oxides; and it is versatile and suitable for a variety of fuels.
6) The boiler feeder adopts Lanhe's proprietary technology --- flexible planetary feeder, and the feeder adopts precision electric
Magnetic speed control, realizing automatic control of the feeding amount, continuous and uniform feeding and variable speed adjustment to adapt to different load fluctuations; the feeding width is consistent with the grate width, which can ensure that the fuel is evenly distributed throughout the grate, and there is no fire port; Conducive to rapid combustion and burnout; set flexible feed device, can adapt to larger size biomass fuel, meet the diversity of fuel; cut off fuel with anti-tempering function.
7) Convection tube bundles are equipped with ash drop devices to effectively reduce the workload of the tail dust removal system; online dust removal holes are reserved, and online dust removal systems can be added to reduce the frequency of boiler shutdown and reduce the labor level.
8) The boiler furnace wall insulation adopts a light furnace wall structure to reduce civil construction costs, and the use of a double-layered shield structure outsourcing, which strengthens the furnace wall's robustness; the use of molded insulation bricks eliminates the possibility of voids in traditional pearl powder and effectively reduces heat dissipation loss;
9) Two-level or three-level energy saver can be set according to the user's needs, pressure-saving economizer + atmospheric pressure energy saver + air preheater; effectively reduce the exhaust temperature and increase the energy saving effect; the setting of the air preheater can improve the supply air Temperature helps fuel combustion. At the same time, the furnace temperature can be adjusted when the fuel moisture is high to ensure that the fuel is burned out and the boiler efficiency is improved.
10) The boiler electrical control system adopts PLC control system and DOC control system according to user needs; it can realize automatic combustion control of the boiler and meet the boiler's evaporation capacity to meet the user's various steam load. The boiler is equipped with high and low water level alarms, extreme low water level shutdowns, overpressure alarms, and automatic water supply control, so there is no worry of water shortage.
11) The boiler outsourcing is packaged with folded board, which is beautiful, generous, clean, and colors are optional.
SZL Series Chain Furnace Exhaust Biomass Molded Fuel Steam Boiler General Drawing
