Technical Case Study: AIX 4 TPH Biomass Steam Boiler for a Customer in Ecuador

Project Overview

AIX BOILER recently prepared a complete DZH4-1.25-T 4 TPH Biomass Steam Boiler System for a customer in Ecuador.

The boiler is designed for industrial steam generation with a rated steam capac

ity of 4 T/H, a rated working pressure of 1.25 MPa, and a rated steam temperature of 194°C.

Biomass is used as the primary fuel. The system is designed to accommodate various biomass fuels, including wood chips, palm fiber, firewood, and agricultural residues, providing flexible fuel selection according to local fuel availability.

Flexible Biomass Fuel Compatibilit

The boiler is designed for industrial steam generation with a rated steam capacity of 4 T/H,a rated working pressure of 1.25 MPa, and a rated steam temperature of 194°C

Its combustion system is suitable for a range of biomass fuels, including:

• Wood chips

• Palm fiber

• Firewood

• Agricultural residues

• Other suitable biomass fuels

This fuel flexibility allows customers to select appropriate biomass fuels according to local availability and operating conditions, helping improve fuel adaptability and support cost-effective operation.

Complete Boiler System Configuration

For this Ecuador project, AIX BOILER provided a complete boiler system configuration rather than supplying only the boiler body.

1. DZH4-1.25-T Biomass Steam Boiler

The boiler body consists of the upper and lower boiler sections, a manually fed furnace, cast-iron grate, furnace walls, and arches.

The large furnace door facilitates manual biomass feeding, while the durable grate structure supports stable combustion of wood chips, palm fiber, and other biomass fuels.

2. PLC Automatic Control Cabinet

The boiler is equipped with a PLC-based automatic control system for centralized monitoring and operation.

The control cabinet provides monitoring of boiler water level and steam pressure, as well as alarm and interlock protection. It also supports VFD control of the forced draft and induced draft fans and regulation of the feedwater pump.

3. Feedwater Pump and Water Treatment System

The system includes a feedwater pump with a flow rate of 6 m³/h and a motor power of 4 kW.

An automatic water treatment system is also included to ensure that the boiler feedwater meets the required quality standards and to help reduce scaling and corrosion during long-term operation.

4. Economizer

An economizer is integrated into the system to recover heat from the flue gas and preheat the boiler feedwater.

This configuration improves heat utilization and contributes to stable boiler operation.

5. Forced Draft and Induced Draft Fans

The forced draft fan supplies combustion air to the furnace, while the induced draft fan extracts flue gas and maintains the required furnace negative pressure.

Together, the two systems help maintain a stable air-fuel ratio and combustion condition during boiler operation.

6. Water Film Dust Collector and Chimney

The boiler system is equipped with an SM-4 water film dust collector for particulate removal from the flue gas.

A Φ400 mm diameter, 8-meter-high chimney is also included for the discharge of treated flue gas.

Key Features of the Solution

Stable 4 TPH Steam Generation

With a rated steam capacity of 4 T/H and a working pressure of 1.25 MPa, the DZH4-1.25-T is designed to provide a stable supply of saturated steam for industrial applications.

Flexible Biomass Fuel Selection

The boiler can operate with different biomass fuels, including wood chips, palm fiber, firewood, and agricultural residues. This provides greater flexibility when selecting locally available biomass fuels.

PLC-Based Automatic Control

Although the boiler uses a manual biomass feeding structure, the system is equipped with PLC automatic control for monitoring key operating parameters and managing associated equipment.

Water level and steam pressure monitoring, alarm functions, and interlock protection are incorporated to improve operational safety and reliability.

Heat Recovery and Flue Gas Treatment

The integrated economizer recovers heat from flue gas to preheat the feedwater, while the water film dust collector provides particulate treatment before flue gas discharge.

This combination helps the boiler system achieve better energy utilization while supporting cleaner operation.

AIX BOILER: Complete Biomass Boiler Solutions for Global Customers

For overseas industrial customers, a successful boiler project requires more than the boiler itself. Feedwater treatment, combustion air supply, draft control, steam distribution, automation, and flue gas treatment all play important roles in reliable operation.

For Mr. Ross's project in Ecuador, AIX BOILER developed a complete 4 TPH biomass steam boiler system based on the required operating parameters and provided the boiler body together with key auxiliary equipment.

This project demonstrates AIX BOILER's capability to provide integrated biomass steam boiler solutions for international industrial customers.