Double-Drum Bulk Steam Boiler

Technical parameters:
1) Specification: SHL35-1.6-AII bulk water pipe steam boiler
2) Rated evaporation: 35MT/h
3) Rated working pressure: 1.6MPa
4) Steam temperature: saturation 204^oC
5) Feeding water temperature: 150^oC
6) Feeding water pressure: 1. 73MPa
7) Boiler efficiency: 81.14%
8) Exhaust smoke temperature: 165^oC
9) Original soot concentration: 1,838.46mg/m³
10) Designed fuel: grade II bituminous coal
11) Fuel consumption: 5.3MT/h
12) Grate area: 32.4m²
13) Hearth capacity: 136.6m³
14) Boiler cooling-wall heat exchange area: 130.7m²
15) Convection tube bundle heat exchange area: 388m²
16) Air pre-heater heat exchange area: 640m²
17) Coal economizer heat exchange area: 255m²
18) Hot air temperature: 145^oC
19) Boiler burned gas: 75,220m³/h
20) Boiler air: 45,375 m³/h
21) Air resistance: 1,956Pa
22) Burned gas resistance: 723Pa
23) Boiler-wall surface temperature: <45^oC
24) Dimensions: 12.48 x 9.4 x 12.53m
25) Boiler net weight: 182MT (wall not included)
26) Noise: 79dB

SHL35-1.6-AII steam boiler is the double-drum horizontal laid natural cycle boiler, which is supported by steel-frame. The burning equipment is coal feeder and squama chain-grate. This boiler can be used as large centralized steam boiler of heat supplying station and heat-load peak adjusting set of heat and power station.

Features:
1) This model is with double-drum horizontal laid structure. When the
feeding water enters the coal economizer, it enters in the steam
drum. The layout of the heating area is of enough margins. The front,
back, and side walls form enough circulation height, thus the water
circulation is safe and reliable
2) The boiler drum with large steam space consists of underwater
orifice plate, even gas orifice plate and corrugated plate separator in
addition to water feeding and cleaning devices. Then the salt melted
in the steam can be transferred to the fed water through quality
exchange, thus the steam quality can be greatly enhanced
3) The front water-cooling wall and the back water-cooling wall form
the front and back arch respectively. The front and back arch is
made of fire-proof materials to reduce the surface heat absorption
capacity to form high temperature area for strong radiation. With
ignition, there are strong high-temperature vortex cavities under
the front arch. The burning is strong under the back arch, so that
the coal adaptability can be greatly enhanced
4) Non-coal-leakage squama chain grate is adopted. The main
advantages include little coal leakage and even draught, easy to
clear up the coal ash. The chain withstanding the pull of the grate
is under the chain-grate late and does not touch the fire bed directly,
thus, the operation becomes even more reliable. As the boiler chain
and the chain grate are in soft structure, making the manufacturing
precision and the installation requirements of the axle shaft chain
wheel relatively low. The boiler chain can be adjusted automatically
to reduce Paya accidents. The chain grate can be installed and
unloaded conveniently, making the examination and reparation
easier. The chain grate can be replaced on the condition of
non-stop boiler. It is with good dust cleaning performance. The
container installed on two sides of the chain-grate is playing the
role of water-cooling iron with very reliable anti-retarding function
for the hearth

Type: SHL35-1.6-AII bulk water pipe steam boiler