Improved economic operation of MSWC plants with a new model based PID control strategy

Municipal solid waste combustion (MSWC) plant operators are currently under an increasing pressure to optimize the economic performance of their plants. A route with high potential for optimizing this performance is by improving the performance of the MSWC plant combustion control system, which typically is of the PID-type. In this paper,...

Nonlinear model predictive control with moving horizon state and disturbance estimation - With application to MSW combustion

This paper presents a nonlinear model predictive control (NMPC) strategy that can be used to tackle model predictive control problems that involve relatively simple nonlinear dynamic models, as for example obtained with first-principles modeling. The main feature of the proposed NMPC strategy is the usage of a moving horizon estimator (MHE) for...

On-line determination of the calorific value of solid fuels

In thermal processes with highly inhomogeneous fuels it is desirable to know real time fuel characteristics. In the case of municipal solid waste combustion (MSWC) it was up till now not possible to determine the calorific value of the waste on-line with a high accuracy. In this paper, a new method is presented where the calorific value is...

The effect of air preheating on the combustion of solid fuels on a grate

Combustion of solid fuels on a grate is widely used. Mostly, the combustion behaviour is explained by the classical theory of Rogers. However, that theory cannot explain the combustion process when primary air preheating is applied. Solid fuel grate combustion is studied by experiments in a pot furnace. Experiments with and without primary air...

The ecotherm control technology applied to MSWC

Optimisation of municipal solid waste combustion (MSWC), processes is an impor tant issue due to the ever-lasting need for emission reduction, more optimal use of raw materials and overall cost reduction. Due to the complexity of the MSWC process, classical optimisa tion strategies will lead to sub-optimal solutions. Control systems based upon...

Model predictive control as a tool for improving the process operation performance of MSW combustion plants

In this paper a feasibility study is presented on the application of the advanced control strategy called model predictive control (MPC) as a tool for obtaining an improved operation performance for municipal solid waste (MSW) combustion plants. The paper starts with a motivation for applying MPC to MSW combustion (MSWC) plants. This is followed...

Model based optimization of MSWC process control

Optimization of municipal solid waste combustion (MSWC), processes is an im portant issue doe to the ever-lasting need for emission reduction. more optimal use of raw materials and overall cost reduction. The key of the approach of TNO (Netherlands Orgaru sation for Applied Scientific Research) to this optimization problem is the usage of...

On-line calorific value sensor and validation of dynamic models applied to municipal solid waste combustion

This paper deals with two aspects concerning the optimization of municipal solid waste combustion (MSWC) processes. First of all, an on-line calorific value sensor is discussed by means of which the calorific value of the waste can be estimated from actual process data. Experimental results on a MSWC process are discussed which show that the...

MIMO closed-loop identification of an MSW incinerator

In this paper, the application of a specific system identification procedure to a municipal solid waste (MSW) incinerator is discussed. This procedure is a combination of, on the one hand, a particular closed-loop identification method called the two-stage method and, on the other hand, the approach of high-order multiple input multiple output ...

Computer simulation of waste combustion in a moving grate furnace as a tool for process optimization and operator trainings

A computer model has been developed to simulate the waste combustion process in a moving grate furnace. The computer model describes the main processes occurring both in the waste layer on the grate, and in the gas phase in the furnace. The boiler section and the flue gas cleaning equipment are also included in the model. The computer simulation...

IGCC power plant: CO2 removal with high temperature absorbents. Pt. 2: Zeolite absorbents.

Orientatie op de mogelijkheden van NOx-emissievermindering bij crematieprocessen