DHW Series Corner Tube Reciprocating Grate Boiler

Rated steam pressure: 3.82Mpa
Rated steam temperature: 450℃
Feed water temperature: 105℃
Fuel Type: Coal / Biomass fuels（ Rice husks, straw, bark, wood chips, bagasse, and the other
Design heat efficiency: 89-92%

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Introduction

The DHW series corner tube reciprocating grate boiler is an energy-saving product. Designed with independent innovation based on the introduced GEF project technology and research on domestic and international corner tube boiler products and technologies, it aligns with the technical development characteristics of China’s coal-fired chain grate boilers and market demands. The product features reliable water circulation, efficient combustion, and low pollution emissions.

Uses: power generation, heating, chemicals, food, rubber.

Advantages

High thermal efficiency

The large cross-section and blast furnace design, combined with the secondary air and the optimized back arch, effectively promote the burnout of fly ash and slag.

Cost savings

Compact structure, low steel consumption, light weight, less infrastructure investment, piece assembly factory, small onsite installation workload, short installation cycle, etc.

The water cycle is reliable

unique design of the recirculation tube and steam outlet tube of the angle tube boiler, the water circulation starts faster and safer.

Low pollutant emissions

The multi-flue arrangement for secondary separation significantly reduces the original dust concentration of the boiler.

The structure is seismic resistant

The angle tube boiler adopts a skeletonless structure, and the weight of the body is supported by a membrane water wall and a descending tube, which has good seismic resistance.

High vapor purity

Due to the pre-separation of gas and water in the steam overflow system, the steam dryness is very high.

Core Technology

Core Technology

Self-supporting structures
Beam grate technology
Arch design for wide coal types
Arch design for wide coal types
Fly ash high-temperature separation + fly ash internal circulation fluidization and re-ignition
Fly ash high-temperature separation + fly ash internal circulation fluidization and re-ignition

Structure Drawing Of DHW Series Steam Boiler

Technical Parameter

DHW Series Steam Boiler Technical Parameter Table

Parameters	Boiler model	DHW20	DHW35	DHW45	DHW55	DHW65	DHW75
Rated steam capacity	T/h	20	35	45	55	65	75
Rated steam pressure	Mpa	1.25/1.6	1.25/1.6	1.25/1.6	1.25/1.6	1.25/1.6	1.25/1.6
Rated steam temperature	℃	194/204	194/204	194/250	194/250	194/250	194/250
Feed water temperature	℃	105
Fuel Type		Coal / Biomass fuels（ Rice husks, straw, bark, wood chips, bagasse, and the other ）
Design heat efficiency	%	89-92

Parameters	Boiler model	DHW20	DHW35	DHW45	DHW55	DHW65	DHW75
Rated steam capacity	T/h	20	35	45	55	65	75
Rated steam pressure	Mpa	3.82	3.82	3.82	3.82	3.82	3.82
Rated steam temperature	℃	450	450	450	450	450	450
Feed water temperature	℃	105
Fuel Type		Coal / Biomass fuels（ Rice husks, straw, bark, wood chips, bagasse, and the other ）
Design heat efficiency	%	89-92