Waste to Energy

Customer Challenge

Each customer has its own challenge to optimize the plant operation and maintenance depending on plant type, fuel, the country’s regulation and so on.

Solution

Based on the customer’s request and feasibility study, our experts in waste-to-energy and biomass provides engineered solutions to improve operation and maintenance of the plant.

Enabling Technologies

CENTUM VP Distributed Control System

The CENTUM VP integrated control system secures interruption-free “uptime only” plant performance for optimal productivity and profitability in the renewable energy field.

Collaborative Information Server (CI Server)

Yokogawa CI Server allows immediate improvement to production efficiency through digital transformation and reduction of operational maintenance whilst building a digital transformation framework.

Customer Challenge

Boiler slagging and fouling are one of the most common causes of maintenance headaches.

Solution

Yokogawa and Dublix Technology provide JetClean, an online boiler cleaner with turning water jets with a unique patented rotating nozzle cleans the boiler during full-load operation of the incinerator. The water-to-steam expansion provides a pressure wave, which is highly efficient to remove the fouling on the boiler surface. The system improves the efficiency of the furnaces and reduces the frequency of off-line maintenance. In addition, the JetClean decreases the flue gas temperature at boiler outlet typically by 60 ℃, which reduces boiler corrosion.

Enabling Technologies

Boiler Cleaner (JetClean)

Dublix Technology's JetClean is an on-line cleaning system for the radiation passes of boilers, found in waste-to-energy incinerators and biomass combustion plants. The system is installed on more than 40 waste-to-energy plants in Europe and Asia. 

Collaborative Information Server (CI Server)

Yokogawa CI Server allows immediate improvement to production efficiency through digital transformation and reduction of operational maintenance whilst building a digital transformation framework.

Zirconia Oxygen Analyzers

Yokogawa’s ZR analyzers are used for combustion monitoring and control applications and are relied on by a wide range of industries to optimize combustion and reduce NOX emissions.

TDLS8000 Laser Gas Analyzer

The TruePeak TDLS gas analyzer relies on a proprietary peak area integration method and is ideal for in-situ analysis in harsh process environments. It significantly improves the efficiency of boiler operations.

Customer Challenge

Minimizing the difference between the planned load and the actual amount of waste loaded into an incinerator. The actual amount depends on the waste type and condition.

Solution

The human interface station (HIS) for the Yokogawa CENTUM distributed control system (DCS) displays a trend graph in which curves are plotted indicating the planned and actual (cumulative weight) incinerator load. If there is any divergence from the planned load, the operator can adjust the stoker speed accordingly.

Enabling Technologies

CENTUM VP Distributed Control System

The CENTUM VP integrated control system secures interruption-free “uptime only” plant performance for optimal productivity and profitability in the renewable energy field.

Collaborative Information Server (CI Server)

Yokogawa CI Server allows immediate improvement to production efficiency through digital transformation and reduction of operational maintenance whilst building a digital transformation framework.

Digital Optimization (CombustIQ)

CombustIQ by Dublix Technology is an advanced combustion control software that uses proprietary predictive technology and expert process knowledge. It analyzes historical data and operator procedures to keep plants running efficiently around the clock. By stabilizing steam supply and optimizing its use, CombustIQ boosts generation efficiency, reduces unplanned shutdowns, increases combustion capacity, and enhances profitability. It also lowers NOx and other harmful emissions from incomplete combustion.

Waste to Energy Process

Waste delivered to an incineration facility is dumped into a pit and then transported by crane to the incinerator. The waste is burned and the remaining ash is collected at the bottom of the incinerator. The combustion heat can be used in district heating systems, water heating systems for swimming pools, and other applications, as well as to heat a boiler that produces steam. The steam drives a turbine that generates electricity. The exhaust gas passes through a cooling tower and dust collector before being discharged through the stack.

Control and Measurement Technologies