SZL Double-drum Corner Tube Biomass Steam Boiler
1. Boiler proper adopts full membrane wall structure and light insulation material, with less air leakage & low excess air coefficient, high boiler efficiency (1-2% higher than traditional products). And furnace and convection heating surface are not prone to agglomeration.
2. Boiler’s heating surface has a reasonable structural layout, with convection heating surface not easy to accumulate dust. It can work continuously & stably for longer periods when compared to similar products.
3. Reasonable proportioned secondary air controls the furnace temperature, makes initial NOx emission concentration of the boiler lower.
4. With compact structure, small covering area，short installation period, quick and convenient installation, it has lower boiler room construction cost than traditional products.
Description
Product Name: Double-drum Corner Tube Biomass Steam Boiler
Product Model: SZL Series
HS Code: 84021900
Manufacturing Standards: ASME/EU/GB
Packing: Boiler proper in nude packing, auxiliaries in steel frames for bulk vessel.
Application Range: 6t/h≤D≤20t/h; P≤3.82MPa;
Parameters
| Model Parameters | SZL8 | SZL10 | SZL15 | SZL20 | |
|---|---|---|---|---|---|
| Structure | Single-drum horizontal fire tube/water tube boiler | ||||
| Rated evaporation (T/H) | 8 | 10 | 15 | 20 | |
| Working pressure (MPa) | 1.25;1.6 | 1.25;1.6 | 1.25;1.6 | 1.25;1.6 | |
| Steam temperature (saturated °C) | 194;204 | 194;204 | 194;204 | 194;204 | |
| Slightly superheated steam temperature (℃) | 203-250 | 203-250 | 203-250 | 203-250 | |
| Feed water temperature (℃) | 20/104 | 104 | 104 | 104 | |
| Boiler efficiency (%) | ≥86 | ≥88 | ≥88 | ≥88 | |
| Design fuel | Biomass pellets (chain grate); Loose biomass like forest residues, wood chips, etc. (reciprocating grate) |
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| Heating area (M²) | 392.7 | 483.2 | 831.2 | 939.5 | |
| Full water capacity (M³) | 12.5 | 13.2 | 14.1 | 14.9 | |
| Exhaust gas temperature (℃) | ≤140 | ≤110 | ≤110 | ≤110 | |
| Combustion mode | Slightly negative pressure grate firing | ||||
| Applicable altitude (m) | Areas with altitude less than 500 meters | ||||
| Dimensions of boiler proper (L×W×H) (mm) | 8130x3230x3700 | 8240x3340x3740 | 11500x3450x6315 | 12370x3370x8580 | |
| Dimensions after installation (L×W×H) (mm) | 11600x5970x6120 | 12910x6650x6180 | 14300x6780x7720 | 14870x7800x10180 | |
| Main steam valve diameter (mm) | DN150 | DN150 | DN200 | DN200 | |
| Safety valve diameter (mm) | DN50+DN80 | 2xDN80 | DN150+DN40 | 2xDN100 | |
| Water inlet diameter (mm) | DN50 | DN50 | DN65 | DN65 | |
| Blow-down diameter (mm) | 40;50 | 40;50 | 40;50 | 40;50 | |
| Biomass feeding system | Customized | ||||
| Ash discharge system | Scraper ash remover | ||||
| Ash disposal system | Customized (Normally by manual) | ||||
| Water treatment system | Customized, water quality standard GB1576 | ||||
| Dust removal system (multi-tube / cyclone / bag filter) | Customized | ||||
| In-furnace SNCR/ex-furnace SCR desulfurization and denitrification systems |
To be negotiated according to local environmental protection requirements | ||||
| Deaerator feed water pump | Flow (Nm³/h) | 8-10 | 10-12 | 15-20 | 20-25 |
| Head(m) | 50-60 | 50-60 | 50-60 | 50-60 | |
| Boiler feed water pump | Flow (Nm³/h) | 8-10 | 10-12 | 15-20 | 20-25 |
| Head(m) | 168-200 | 168-200 | 168-200 | 168-200 | |
| Control cabinet | Customized (3 standard choices: high, medium & basic) | ||||
| Primary air fan | Flow (Nm³/h) | 9520 | 12138 | 14994 | 24276 |
| Pressure (Pa) | 2897 | 2955 | 3251 | 3576 | |
| Secondary air fan | Flow (Nm³/h) | 2856 | 3641 | 4498 | 7283 |
| Pressure (Pa) | 3326 | 3393 | 3563 | 3919 | |
| Induced draft fan | Flow (Nm³/h) | 16850 | 17187 | 26539 | 34374 |
| Pressure (Pa) | 3890 | 4084 | 4288 | 4717 | |
| Soot blower | G-type fixed-rotary type / Impulse type | ||||
| Dia. & Height of stack(mm) | According to the local environmental protection requirements / environment impact assessment report | ||||
Note:
1. The right to interpret this product belongs to Brit Thermal Energy Equipment Co., LTD., the design data may subject to changes without prior notice, the final design drawing shall prevail.
2. We can design and manufacture boilers with other parameters according to customers’ requirements.
