Yong Xing Boiler Group Co.,Ltd                                                        Service customer with profession

About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsCoal Fired Steam Boiler

Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved

Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved

  • Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved
  • Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved
Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved
Product Details:
Place of Origin: HENAN
Brand Name: YONGXING
Certification: ISO9001,ISO14001,SGS,BV
Model Number: DZL/SZL
Payment & Shipping Terms:
Minimum Order Quantity: 1set
Price: negotiable
Packaging Details: Nude packing,Package with Steel Box,or Wooden Box
Delivery Time: 10-15days
Payment Terms: T/T, L/C, Western Union
Supply Ability: USD1000/SET
Contact Now
Detailed Product Description
Type: Horizontal Usage: Industrial
Material: Special Steel Burner: Riello, Baltur,or Optional
Fuel: Coal/Biomass/Wood Chip/Wood Pellet Control System: Automatic
Installation: Assembled Boiler Burning Stype: Chain Grate Boiler
High Light:

coal fired hot water boiler


coal fired central heating boilers

Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved


Chain Grate Coal Fired Steam Boiler Technical characteristics
1. The Chain Grate Coal Fired Steam Boiler furnace is designed as a full water-cooled combustion chamber. The left and right membrane walls extend all the way to the upper surface of the grate, and the water-cooled furnace is formed with the water-cooled arches before and after, which increases the radiation heating surface of the furnace and improves the working efficiency of the boiler.

2. The pipe at the bottom of the drum and the headers on both sides constitute the rear arch pipe, which successfully solved the reduction of the height of the boiler and improved the space utilization inside the boiler.

3. The whole boiler adopts low thermal inertia design. The overall efficiency of the boiler is more compact, and the heat radiation area of ​​the furnace is increased by more than 50%. At the same time, the use of the light furnace wall reduces the thermal inertia of the boiler by 70%, improves the combustion efficiency, and makes the boiler load adjustment more flexible.

4. The boiler body adopts a membrane type water wall completely sealed structure. The boiler's sealing performance is greatly improved, the heat loss is reduced, the boiler thermal efficiency is further improved, and the working environment of the boiler room is improved.

5. The grate adopts the contact type lower sealing structure to solve the uneven burning of fuel caused by grate and air leakage.

Structural design of coal-fired steam boiler
The boiler consists of a pot and a water-cooled wall tube on both sides to form a furnace and a convection flue. The front chamber is composed of four shed tubes and a front tube sheet. A thread convection pipe is installed inside the drum. The chain grate is located in the lower part of the water cooling system and serves as the base to support the weight of the entire boiler. From the overall structure classification, the boiler can be divided into two parts: the water cooling system and the combustion system.
1. Water cooling system part
The water cooling system consists of three natural circulation loops. In order to reduce the inlet smoke temperature of the front tube sheet, the water-cooled wall tubes on both sides constitute the convection flue heat absorption. The drum has two design modes: continuous sewage discharge and regular sewage discharge. There are regular drain valves on the headers on both sides. The economizer at the end of the boiler is designed with a cast iron streamline. The water supply pipeline and the flue gas pipeline adopt a countercurrent arrangement.

The feedwater enters the drum through the economizer, a part of which enters the circulation riser of the two side tanks and enters the drum, and the other part is heated by the threaded pipe in the drum and naturally separates the steam. The steam in the drum is led out by the main air valve. The bottom part of the cylinder directly in contact with the flame is insulated by heat-insulating material, which further improves the safety of the steam system.
The furnace wall is made of light refractory bricks and refractory concrete. The outside is made of sapphire concrete insulation. The outermost layer is made of new slats and the appearance is neat and beautiful.

2. Burning system part
The combustion system includes a coal hopper, a chain grate, and a speed control box. The boiler adopts a large chain grate, which has good ventilation effect and convenient loading and unloading. The grate adopts a new type of lower sealing contact side seal, and the side seal portion is displaced to the lower part of the grate piece so that the part is always treated in the air-cooled state, thereby effectively avoiding the occurrence of burning, fuel leakage, and air leakage. At the same time, the header is placed above the side seal, which can effectively prevent the occurrence of coking failure.

Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved 0


There is a separate air chamber under the grate, and the boiler can automatically adjust the intake air according to the combustion situation. The air intake mode is the air intake on the left side of the tail, and the air distribution door of each air chamber is adjusted by double baffles so that the wind pressures in the wind chamber are substantially equal.


The cleaning device adopts push-pull gate design, which can effectively prevent the grate from leaking air; the secondary air is in the upper part of the front arch above the grate, and supplies air to space above the grate, effectively supplementing the shortage of primary air. When the boiler is running, the fuel is evenly laid on the grate to form a layer, mixed with the primary air, and the drying, pyrolysis, combustion and reduction processes are sequentially performed.


The combustible gas and the secondary air are mixed and burned in the space above the grate, and the combustion is sufficient, and the fuel utilization rate is high. A coal hopper and a coal gate are provided at the front of the furnace to adjust the thickness of the fuel layer on the grate. The gearbox controls the speed at which the grate operates, effectively controlling the fuel's combustion efficiency.


Data sheet 1

The Parts of DZL Chain Grate Coal Fired Steam Boiler
NO. Name Model& Origin
2 Valves and Matching ZHENGZHOU
3 Grate Governor J50B / 0.5KW JIANGSU
4 Forced Draft Fan Type 4-72-12NO.4.5A left 0° ZHOUKOU
5 Induced Draft Fan Type Y5-41-7.1C right 135° ZHOUKOU
6 Feed Water Pump NORMAL Type 1(1/2)GC5×9 ZHEJIANG
9 Steam Cylinder φx L( mm) 159 YONGXING
10 Electrical Cabinet CKC-II NANJING
11 Wet type Dust collecter 1T matching ZHOUKOU
12 Water Treatments 1T matching US FLECK
13 Water Alarm   Zhoukou
14 Slag Remover GBC-1 / 0.5KW YONGXING
15 Coal Conveyor FSG-100kg YONGXING

Data sheet 2

Rated evaporation capacity t/h 1 2 3 4 6
Rated working pressure MPa 0.7/1.0/1.25 0.7/1.0/1.25 1.0/1.25 1.25/1.6 1.25/1.6
Rated steam temperature ℃ 170/184/194 170/184/194 184/194 194/204 194/204
Water-supply temperature ℃ 20 20 20 20 20
Body Heated area m2 6 54 83.5 115 186
Economizer Heated area m2 10.56 27.6 41.2 53 87.2
Chain Grate area m2 2.3 2.3 4.1 4.1 5.85
Exhaust temperature (℃) 120 120 120 125 125
Maximum shipping weight ton 19 25 28 32 43
4500×2000×3200 5900×2200×3400 6200×2200×3450 6700×2400×3450 7700×2600×3600

Data sheet 3

Parameters Table for DZH 0.5-6 ton Chain Grate Coal Fired Steam Boiler
Item No. DZH0.5-0.7 DZH1-1.0 DZH1-1.25 DZH2-1.0 DZH2-1.25 DZH4-1.25 DZH4-1.6 DZH6-1.25
Rated steam output(t/h) 0.5 1 1 2 2 4 4 6
Rated work pressure(Mpa) 0.7 1 1.25 1 1.25 1.25 1.6 1.25
Rated steam temperature(°C) 165.3 184 194 184 194 194 204 194
Rated feed water temperature(°C) 20 20 20 20 20 20 20 20
Thermal efficiency(%) 76.6 77.18 77.6 76.8 77.7 78.8 78.8 78.5
Fuel consumption (kg/h) 79 172 178 358 361 726 732 1080
Shipping size(m) 3.67*


Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved 1


Horizontal Chain Grate Coal Fired Steam Boiler Low Fuel Consuming SGS Approved 2

Contact Details
Yong Xing Boiler Group Co.,Ltd

Contact Person: Ms. Bettysun

Tel: 86-13849050429

Send your inquiry directly to us
Other Products