Design of modelling and online simulation for energy systems in papermaking mill

Abstract

This paper presents a general framework of

modelling and online simulation for papermaking mill’s energy

systems. The energy flow models of thermal power plant, DIP

and paper machine for a papermaking mill was designed and

implemented an online simulation. The traditional offline,

closed and scattered modelling and simulation methods were

changed into online, open and integrated forms. Through the

analysis of energy systems of papermaking mills, the

framework has implemented the followings. The unit

(equipment) models were established, it can analyse the energy

of energy flow material. The corresponding material flow

models library was developed. The craftwork models were

designed and the energy flow models library was developed of

thermal power plant, DIP and paper machine. The mathematical

models of unit (equipment), energy flow, exergy flow, thermal

power plant, DIP and paper machine were built. The material

properties database was developed. General simulation software

architecture and online simulation software architecture were

designed. The framework implemented online simulation,

analysis, diagnosis and optimization for energy systems of

whole papermaking mill. The practical application results are

fine when the framework was applied in Guangzhou Paper

Group Co., Ltd., and Gold East Paper (Jiangsu) Co., Ltd. The

practical application results indicate that the emulation,

simulation, analysis, diagnosis and optimization of material

flow and energy flow for papermaking mill whole production

process can be implemented by online simulation, and the

purposes of maximizing the utility efficiency of material and

energy resource, reducing resource, reusing and recycling can

be achieved.