Boiler combustion layer combustion, combustion chamber and combustion three. Each method has its corresponding combustion combustion apparatus. Fixed grate, grate, reciprocating grate, grate, which belongs to the vibration layer combustion type, suitable for the combustion of solid fuel. Pulverized coal boiler, oil-fired boiler, gas boiler, belonging to the combustion chamber type, suitable for pulverized solid fuel, liquid fuel and gas fuel. Bubbling fluidized bed, circulating fluidized bed belongs to the boiling combustion mode, suitable for burning granular solid fuel. Stoker grate, both layer combustion and ignition combustion mode, which belongs to the mixing combustion mode.

In 1, a fixed grate: one of the most simple structure of layer combustion equipment, two single grate and double-layer grate A single grate made of cast iron, with a plate and strip B double grate, there are two layers of grates, the upper grate is composed of a water cooling pipe of the fixed fire grate, grate for ordinary under cast iron fixed grate. The upper grate more space for wind chamber, under the grate below for the pit, the two layers of grates are combustion chamber.

In 2, the chain grate: a structural comparison of perfect combustion equipment. Due to the high degree of mechanization, manufacturing technology is mature, stable and reliable operation, manual poking can make the fuel burn more fully, the burning rate is higher also, applicable to large, medium, small industrial boiler. According to the structure can be divided into domestic chain grate chain type, beam type and scale type chain fire grate. A chain-type chain fire grate which belongs to the light structure is suitable for rated evaporation capacity is less than 10t / Hd steam boiler or the corresponding capacity combustion boiler. B beam type chain fire grate is highly rigid beam as a scaffold, grate and embedded in the groove of the support beam, when the drive shaft of the chain wheel drives the chain to rotate the beam and the single grate moves. C scale type chain fire grate for rating greater than 10t / Hd steam boiler or the corresponding capacity combustion boiler.

3, reciprocating grate: use of a fire grate reciprocating motion to realize coal, slag, poking mechanical combustion equipment. Reciprocating grate grate can be divided according to the layout of inclined reciprocating grate and a horizontal reciprocating grate A sloped reciprocating grate inclined ladder type, the interphase arrangement of moving grate grate and fixed grate piece. B horizontal reciprocating fire grate is fixed grate plate and the movable grate grate staggered, overlapping.

4, vibrating grate: by an eccentric block vibration exciter, beams, fire grate sheet, rod, spring plate, rear sealing device, vibration motor, anchor bolts, damping rubber pad, frame, front sealing device. Measuring beam, a fixed fulcrum and other components. Has the advantages of simple structure, easy manufacture, light weight, less metal consumption, saves equipment investment, good burning condition, grate area of high load, coal type adaptability advantages in industrial boiler applications.

In 5, Stoker: by throwing coal, coal throwing machine can be divided into wind coal feeding machine, mechanical stoker and mechanical wind coal feeding machine three. Mechanical stoker with mechanical stoker and wind coal feeding machine function, it has two main components: coal and coal throwing parts components.

6, boiling combustion in fluidized bed: a kind of fixed bed and suspension bed between the gas solid two phase bed. Fluidized bed under different flow rate into the bubbling bed, turbulent bed and fast bed. A bubbling fluidized bed structure is composed of a coal feeding device, air distributing device, a wind chamber, ash overflow, fluidized bed, suspended section. Characteristics of coals adaptability strong, can strengthen heat transfer, steel saving, convenient ash comprehensive utilization of pulverized coal boiler, environmental pollution is light, simple structure of boiler body. B circulating fluidized bed is a new generation of highly efficient, low pollution clean coal combustion technology. Its characteristic is that fuel and desulfurizing agent in a fluidized state after many cycles, repeated by low temperature combustion and desulfurization reaction. C circulating fluidized bed and bubbling fluidized bed combustion process the main difference lies in 1, circulating fluidized bed layer fluidized velocity is high generally 3 ~10m / S is up to 10m / s, bubbling fluidized bed boiler fluidized speed of 1~ 3m / s.

7, pulverized coal boiler combustion equipment: Coal by coal grinding equipment, then sprayed into the furnace combustion, the combustion process is in the hearth of the boiler is suspended, referred to as pulverized coal furnace. Its characteristics can be improved with a mixture of air, accelerate the ignition box and combustion, coal type adaptability, suitable for large and medium-sized boiler. Pulverized coal boiler combustion equipment coal equipment, pulverized coal system and coal powder burner.

In 8, a fuel burner: a fuel nozzle and air regulator component; the fuel oil atomization, and air mixture into the strong, so that oil and gas mixture in the furnace in a suspension state of a combustion apparatus. Burner fuel oil-fired boiler is the key equipment, by the use of fuel types can be divided into light oil burner and heavy oil burner, heavy oil viscosity, in heavy oil burner in the general setting of preheater. Industrial fuel oil boiler mostly configuration light oil burner.

9, gas burner: it is the main gas boiler combustion equipment. Gas burner with diffusion type burner, atmospheric type burner and full premixed burner.