D Type Water Tube Steam Boiler: Advanced Steam Generation by ZOZEN

Introduction
In industrial applications requiring high-efficiency steam production, the D type water tube steam boiler stands out as a superior solution. ZOZEN Boiler, a leading manufacturer in thermal energy systems, offers cutting-edge D type water tube steam boiler technology designed for optimal performance and reliability. This article explains the fundamentals of D type water tube steam boilers, details ZOZEN’s product introductions, and highlights the innovative membrane wall construction that sets ZOZEN apart.

Part 1: What is a D Type Water Tube Steam Boiler?
A D type water tube steam boiler is a high-efficiency steam generator characterized by its distinctive “D” shaped furnace design. This configuration features:
Key Structural Components:
Water Tubes: Form the “D” shape, circulating water for rapid steam generation
Steam Drum: Horizontally mounted for efficient water/steam separation

Mud Drum: Collects precipitates and maintains water quality
Furnace: Positioned beside the tube bank for optimal combustion
Operating Principle:
Combustion gases heat the inclined water tubes
Water circulates naturally or via pumps
Steam separates in the drum for clean, dry output
The D type water tube steam boiler excels in power plants, refineries, and large industrial facilities requiring reliable, high-pressure steam.

Part 2: ZOZEN D Type Water Tube Steam Boiler Product introduction
SZS series boiler is double drums, longitudinal arranged, “D” type chamber structure. Furnace is on right side and convection tube bundle is on the left, super heater is arranged at convection tube bundle. The body is fixed on the basement by middle and both end flexible supports and make the boiler to expand horizontally to sideways. Around furnace is membrane wall. Furnace and tube bundle is totally separated by the membrane wall at the left side of the furnace. The back part of bundle is sparse shift structure, front part is aligned structure. Smoke from furnace outlet enters re-burning chamber, bundle area, and then from left front part enters spiral fin coil economizer and condenser, finally discharged to atmosphere through chimney.

SZS series gas-fired (oil-fired) steam boiler
Thermal capacity：2-110 t/h
Working pressure：1.25-5.3 MPa
Outlet temperature：194-540 °C
Available fuel：Natural gas, coke oven gas, blast furnace gas, carbon black tail gas, biogas, diesel, heavy oil, light oil, crude oil, etc.

Part 3: ZOZEN’s Innovative Membrane Wall Construction advantages
ZOZEN’s D type water tube steam boiler incorporates patented membrane wall technology and the advantages are as below:
1)D-type arrangement with full membrane wall structure
2)The convection tube bundles of the upper and lower drums from the convection heating surface and ensure that the whole boiler expands horizontally to sideways.
3)The combustion chamber uses narrow distance tube membrane wall which has good air tightness. It reduces heat loss and increases boiler thermal efficiency.
4)Membrane structure of the front and rear wall is used for boiler body, which highly increased their service life to over 20 years.
5)The comb-shaped plates are used as the sealing between both sides of the boiler body and the drum, which avoids the leakage of condensed water and gas caused by refractory concrete sealing.

6)This advanced membrane wall design makes ZOZEN’s D type water tube steam boiler exceptionally durable and efficient.

Conclusion
For industries requiring reliable high-capacity steam, ZOZEN’s D type water tube steam boiler delivers unparalleled performance through:
Optimized D-type configuration for efficient heat transfer
Custom-engineered solutions for specific operational needs
Patented membrane wall construction for maximum durability
Contact ZOZEN Boiler today to configure your ideal D type water tube steam boiler solution with our engineering experts.