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Coal Biomass Steam Boilers

Posted on March 29, 2017 in Coal Biomass Boilers by

Introduction of coal biomass fired steam boilers

Sitong DZL seires coal/biomass fired steam boiler realizes almost zero pollution with the use of special dust collector solution (bag dust collector, double towers desulfurization, etc.), it is honored as Chinese famous brand. This series boiler is single drum horizontal type shell boiler, the combustion equipment is chain grate (small scale flaker is available), has the advantages of feed mechanically and strong adaptability of different fuels. The fuel could be II class bituminous coal, the diameter should be 6-25mm, and ash content should be less than 32.4%. Otherwise, DZL series boiler could also burn biomass fuel, including wood, straw, bagasse, rice husk, coconut shell, cotton seeds, peanut shell, etc.

Features of industrial coal biomass fired steam boilers

1. Sitong DZL boiler is fast assemble or assemble, compare with bulk boiler, it saves 30% installation period and installation cost.
2. By using spirally corrugated tubes, the boiler has excess output, and sustained, generally, the actual output is 10~15% higher than it shown on the nameplate.
3. The temperature rise up quickly with high thermal efficiency (83%).
4. Low original emission concentration of smoke, energy saving and environmental protection.
5. Low requirement of water quality.
6. The 100% NDT make sure the boiler life span more than 20 years.
7. Based on customers’ requirement, the combustion equipment can be designed as chain grate, moving grate, fixed grate, and reciprocal grate.
8. Sitong Boiler has got CE certificate of DZL series coal fired boiler, also, we can offer SGS, BV inspection.

Technique Parameters of horizontal coal biomass steam boilers

Model Steam
Rated pressure
Thermal efficie-ncy (%) Availa-ble fuel Fuel consum-ption


Overall Dimension





DZL1-0.7/1.0/1.25-T 1 0.7/1.0/1.25 82 Biomass pellet ~200 5.1×2.2


DZL2-0.7/1.0/1.25-T 2 0.7/1.0/1.25 82 ~400 5.5×2.3


DZL4-1.25/1.6-T 4 1.25/1.6 82 ~800 6.6×2.6


DZL6-1.25/1.6-T 6 1.25/1.6 82 ~1200 8.2×2.9


DZL8-1.25/1.6-T 8 1.25/1.6 82 ~1600 8.1×3.1


DZL10-1.25/1.6-T 10 1.25/1.6 82 ~2010 Up 7.7×3.2


Down 8.6×3


Up 23

Down 28

Note: 1. Parameter is for reference only, if any changes should follow the factory technical data.

2. Our company can design boiler products based on customers’ requirement and different biomass fuels.

Case of Industrial coal biomass fired steam boilers

Packaging and Shipping of industrial coal biomass steam boilers

The 6 ton capacity coal biomass fired steam boilers exported to Sri Lanka use for Plywood plant.

Customer Visiting of industrial coal biomass fired steam boilers

Welcome come to Sitong Boiler for investigation, then you will know more about the boiler quality and company strength, and we will offer the excellent service, including airport pick-up, accommodation, transportation, meal, and tourism, etc.

Business Exhibition of Industrial Coal biomass steam boilers

International Boiler Exhibition Attended by Sitong Boiler:
14th Shanghai International Exhibition on Boiler Technology
14th Indonesia International Textile and Garment Machinery & Accessories Exhibition
Kazakhstan Exhibition for China Home Life and China Machine

FAQ of coal biomass fired steam boilers

1. What are the spare parts for DZL/SZL series coal/biomass fired boiler?
Generally, the spare parts are instrumentation valve, grate plate, gasket, etc.

2. What are the difference between DZL and SZL with the same capacity?
1. Usually for the boiler with capacity lower than 10Ton
2. Easy for transportation
3. Lower request on water quality
4. Low boiler room construction charges
5. Low requirement on water quality
1. Usually suitable for bigger capacity boiler
2. Good water circulation, small water volume
3. Warm up faster, higher steam quality
4. Higher request on water quality
5. Higher thermal efficiency

3. What are the differences between vertical type boiler and horizontal type boiler with the same capacity?
1. Structure of vertical boiler is compact, occupy a limited area,
2. Convenient on installation and removal.
3. Low cost and investment on capital construction. Steam exhausted fast and sufficient.
1. The combustion space of horizontal is big, fuel can be burned completed.
2. The thermal efficiency is higher than the vertical boiler,
3. Horizontal type: less thermal loss, stronger output, and higher steam quality.

4. What are the limitation (size, humidity, chemical element concentrations) of coal fuel/solid fuel/wood fuel?
Size requirement of coal:6-25mm
Size requirement of blending coal: <50mm (the coal less than 6mm should less than 30%)
Diameter of biomass particle: 6~10mm, length: 25~50mm, water content < 15%, ash content < 2%, sulphur content<0.07%, chlorinity <0.07%, nitrogen content < 0.5%

5. What is the size of furnace door and blower hopper?
Size of furnace door:
Standard elliptical furnace door:300*800*1500
Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500

SZL Water Tube Coal Steam Boiler

This series boiler is horizontal type water tube chain grate coal biomass fired steam boiler. the steam capacity is 6-40t/h.

SZL Coal Boilers Installation Site

The 10 ton capacity coal fired water tube steam boiler use for printing and dyeing plant. thermal efficiency si 82%.

Chain Grate Stoker

The scale chain grate boiler could resist the temperature as high as 1200℃, long working life. It has a low coal leakage because of the small gap.

DZL Coal Biomass Steam Boilers

The 6 ton capacity coal biomass fired steam boiler use for wood processing in Poland. thermal efficiency is 82%.

Once-through Oil Gas Steam Boilers

This series boiler is vertical type water tube oil gas fired steam boilers, the steam capacity is 0.1-4ton/h.

Customer Visiting of Vertical Oil Gas Boilers

Welcome visit Sitong Boiler, here you will know more about Sitong Boiler, boiler products, and boiler techniques. Lots of customers around world come here for investigation, and most of them have chosen the satisfied boilers.

Oil Gas Burner

There are gas burner, oil burner, and oil and gas duel fuel burner. The fuel could be diesel, furnace oil, bunker oil, natural gas, city gas, bio-gas, and LPG, etc.

Fire Tube Oil Gas Steam Boilers

The 4 ton capacity fire tube gas oil fired steam boiler use for food factory in Philippines. thermal efficiency is 92%.

Electric Steam Boilers

This series boiler is horizontal type electric heating steam boilers, thermal efficiency is 99%.

YLW Biomass Thermal Oil Boilers

The 360,0000kcal biomass fired thermal oil boiler use for plywood plant in Indonesia. thermal efficiency is 85%.

Customer Visiting

Customers come from England, Russian, Mexicanm, Bengal, Dubai, Tailand, etc. visited Sitong Boiler, during the investigation, we resolve their doubts, and help them select the most proper boilers.

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