DZH fixed grate biomass boiler is a horizontal three-pass water-fire tube boiler with a single longitudinal drum, a new heating equipment independently developed by our company in response to environmental protection policies. The boiler takes biomass pellets pressed from agricultural and forest wastes such as straw, sawdust and peanut shells as fuel. Its sulfide emission in flue gas is far lower than coal-fired boilers and meets national environmental emission standards. Agricultural and forest wastes are widely available and low in procurement cost, which truly turns waste into treasure and realizes energy recycling, balancing economic and social benefits.
Equipped with an innovative furnace arch structure, the boiler can fully burn fuel with thermal efficiency up to 83%. Flue gas generated by fuel combustion flows through heating surfaces, economizer and air preheater in sequence, and is discharged into the atmosphere via chimney after dust removal and purification. Ash residues produced from combustion can be directly used as organic farm manure to realize resource recycling.

Core Structural Advantages

✅ Optimized Drum Structure
The drum is composed of arched tubesheets and threaded smoke tubes, upgrading the drum from quasi-rigid structure to quasi-elastic structure, removing tubesheet stays and reducing structural stress. The smoke tube is changed from two-pass to single-pass, fundamentally solving the problem of tubesheet cracking during long-term operation.
✅ Anti-sludge and Anti-bulge Design at Drum Bottom
Riser tube rows are arranged at the drum bottom to eliminate dead water zones and reduce sludge deposition. The high-temperature area of the drum is continuously and fully cooled to effectively prevent bulging deformation of the lower drum under heat.
✅ Enhanced Heat Transfer by High-efficiency Threaded Smoke Tubes
High-efficiency heat transfer threaded smoke tubes greatly boost heat exchange performance, enabling fast temperature and pressure rise and higher thermal efficiency. Turbulent flue gas inside tubes avoids ash accumulation on tube walls and realizes self-cleaning.
✅ Low Dust Emission Structure
The splayed furnace wall and outlet flue window have natural dust settling effect, controlling the original dust concentration within standard limits and making flue gas emissions comply with national environmental regulations.
✅ Compact Layout to Save Infrastructure Investment
The whole machine features compact layout with smaller overall size than boilers of the same specification, greatly cutting civil engineering costs of boiler rooms.
✅ Stable and Reliable Operation
The equipment runs stably with simple and convenient adjustment, providing sufficient and continuous steam or hot water output, suitable for long-term stable heating scenarios.
模型
DZH0.5
DZH1
DZH2
DZH3
DZH4
DZH6
额定蒸发量
产能（吨/小时）
0.5
1
2
3
4
6
额定工作压力（兆帕）
0.7/1.0
0.7/1.0/1.25
0.7/1.0/1.25
1.0/1.25
1.0/1.25/1.6
1.0/1.25/1.6
额定蒸汽温度（℃）
170/184
170/184/194
170/184/194
184/194
184/194/204
184/194/204
 给水温度（℃）
20
20
20
20
20
20
热效率（%）
>82
排气温度（℃）
146
144
138
135
123
146
燃料类型
煤、生物质颗粒、木屑、竹片、木块、稻草、黄麻、棕榈壳
燃料消耗量（千克/小时）
114
225
409
610
815
1218
最大运输重量（吨）
8
11
14.5
17.5
23
26
最大运输尺寸（毫米）
3260×2000×2670
4150×2200×2915
4794×2300×3270
5200×2300×3300
5765×2550×3563
7740×3770×3440