150hp Industrial Rice Husk Biomass Fired Steam Boiler Rice Mill Boiler For Rice

Product Specification

150hp Industrial Rice Husk Biomass Fired Steam Boiler Rice Mill Boiler For Rice Processing Plant

1. Steam Boiler capacity:1-4ton/h
2. Stem pressure: 0.7MPa (7bar) ,1.0MPa(10bar),1.25MPa(13bar), 1.6MPa(16bar)
3. Steam temperature output: 170℃, 184℃, 193℃, 204℃
4. Available fuel: biomass, wood pellet,peanut, paddy, rice husk,sawdust solid fuel.
5. Boiler Structure: Horizontal three pass fire tube industrial used steam boiler
6. Application:used for all kinds of industrial production and processing.
7. Standard of Design, Manufacturing and Inspection: GB150

DZH type steam boiler body for the "A" structure, uniform heating surface, and the use of A certain radian, elastic, easy to expand and shrink the water wall pipe and strengthen the heat transfer of the screw pipe smoke pipe, the maximum to ensure the safety and efficiency.The pot shell, tube plate and other pressurized parts are elastic or quasi-elastic, which can improve the stress state to the greatest extent.The wing-shaped flue structure is adopted on both sides of the pot shell, which can effectively reduce the heat deviation of the system and ensure the heat transfer of the system is efficient and stable.The lower part of the boiler body is provided with an ascending tube, and there is no stagnant water in the pot, which can effectively solve the overburning and bulging at the bottom of the pot shell.The system itself has a certain self-dedusting ability to meet the increasingly stringent environmental requirements.

Structure 

Combustion process:

The fuel enters the furnace and burns on the grate. The flue gas from the production enters the convection tube bundle on both wings along the bottom of the boiler barrel through the smoke outlet on the middle partition wall, enters the threaded smoke pipe through the front smoke box, passes through the dust collector, and is pumped and discharged into the atmosphere through the chimney by the induced draft fan.

Technical characteristics

1. Brief introduction of structure

The DZH2-1.25-T type steam boiler is a single boiler barrel vertical water-fire tube boiler shell boiler, and the combustion equipment is a movable grate.Left and right sides of the chamber of a stove or furnace water wall as the radiation heating surface, flanked by convection chamber of a stove or furnace heating surface, drum inside decorate threaded pipe (Ф 57 x 3.5) convection heating surface, the furnace wall used firebrick lining part made of heat-resisting concrete pouring dao type process, boiler host lateral stereo shape protector for shell.

The boiler body adopts the form of upper pot barrel, water wall tube and set box in the overall structure.Drum by Ф 1200 x 12 cylinder and tube plate before and after the 1200 x 10 Ф compound and into.Water wall tube boiler tube for Ф 51 x 3.5, header for Ф 159 x 6 boiler tube, down tube for Ф 133 x 6 boiler tube.

This boiler adopts the latest scientific research achievements, such as arch tube plate, threaded smoke pipe, etc., which solve the problems of boiler shell lower drum, tube plate crack, low thermal efficiency, insufficient output and so on.

2. Combustion process

The fuel enters the furnace and burns on the grate, and the flue gas generated goes into the convection tube of both wings along the bottom of the pot through the exit smoke window on the figure 8 wall, enters the threaded pipe through the front smoke box, passes through the economizer and dust collector, and is pumped by the induced draft fan into the atmosphere through the chimney.

3. Technical features

(1) The pot barrel is composed of arch tube plate and threaded smoke pipe, so that the pot barrel is changed from a quasi-rigid body to a quasi-elastic body structure, and the stretch parts in the tube-plate area are eliminated to reduce the stress.The smoke pipe in the tube plate is changed from two return journey to single return journey, which solves the problem of crack in the tube plate.

(2) The bottom of the pot is arranged with an ascending pipe row, which eliminates the stagnant area at the bottom of the pot and makes the mud residue not easy to deposit. The high temperature area of the pot can be well cooled to prevent the bottom bulge of the pot.

(3) High efficiency heat transfer threaded smoke pipe is adopted to enhance the heat transfer effect and achieve the characteristics of boiler heating up and rapid pressure boost, thus improving the thermal efficiency of the boiler.

(4) Compact structure, compared with the same type of boiler, the shape size is small, save investment in boiler house infrastructure.

(5) Stable operation, convenient adjustment and sufficient output.

(6) The threaded smoke pipe is used to enhance the heat transfer, which improves the heat transfer coefficient and thermal efficiency, because the smoke has a disturbance effect in the pipe.Smoke tube is not easy to accumulate ash, play the role of cleaning.

(7) The eight-character wall in the furnace and the smoke window at the exit have a certain dust-lowering effect.The original dust emission concentration of the boiler is controlled below the standard to ensure that the soot emission of the boiler meets the national environmental protection regulations.

(8) The unique double-layer secondary air design improves the ignition condition of biomass fuel, adopts the independent air chamber, achieves the reasonable distribution of wind, forms an aerodynamic field favorable to combustion in the furnace, and makes the combustion temperature and combustion efficiency high.