Synthesis of Interplant Water-Allocation and Heat-Exchange Networks. Part 2: Integrations between Fixed Flow Rate and Fixed Contaminant-Load Processes

Abstract

Part 1 of the series proposes a multiscale state-space superstructure for interplant water-allocation and heatexchange networks (IWAHENs) design with direct and indirect integration schemes in fixed flow rate (FF) processes (Zhou, R. J.; Li. L. J.; Dong, H. G.; Grossmann, I. E. Synthesis of Interplant Water-Allocation and Heat-Exchange Networks. Part 1: Fixed Flowrate Processes. Ind. Eng. Chem. Res. 2012, 51, 4299). Based on the same superstructure, part 2 of this series extends the IWAHEN integration methods to fixed contaminant-load (FC) processes as well as integration of FF and FC processes. The integrations are performed by solving the corresponding mixed-integer nonlinear programming (MINLP) models based on the multiscale state-space superstructure. Several relevant examples, including both direct and indirect integrations for IWAHENs, are presented to illustrate various aspects of the proposed approach.

A Holistic Methodology for Optimizing Industrial Resource Efficiency

“…As shown in Figure 14) this solution exhibits a highly integrated system with both a steam cycle and ORC (using ammonia as the working fluid) functioning over four pressure levels. The increased value of the lowest pressure level in the steam cycle, P 4 st , from 1 bar (case II) to 1.1 bar, eliminated the use of medium-pressure steam in the PM cluster, while three condensation levels of the ORC supplied the heating requirements in this cluster. For each cluster, the HLD results are shown in (Figure 15).…”

“…The combined heat and power superstructure developed by Kermani et al [16] can address the first gap, while the HIWAN hyperstructure developed by Kermani et al [17,18] can address the second gap by integrating a cooling water network with the process water network. The aim of the current work is to address several gaps (1,3,4,5) by proposing a hybrid mixed-integer nonlinear programming (MINLP) superstructure for simultaneous optimization of heat, water, and power. The superstructure is constructed by combining the targeting superstructure of HIWAN [17] and the combined heat and power superstructure [16] for both ORC and steam cycle modeling and optimization.…”

Synthesis of single and interplant non-isothermal water networks

“…Example 3 considers a single contaminant problem now including wastewater treatment units enabling wastewater regeneration and reuse. The operating data for the process water-using units were taken from the literature (Zhou et al, 2012b) are shown in discharged into the environment is 20 ppm. In addition, the distance matrix is given in Table 9, arbitrarily.…”

“…To the best of our knowledge, only a few papers address the issue of simultaneously synthesising heatintegrated interplant water networks. Authors firstly addressed the synthesis problem for fixed flow rate processes (Zhou et al, 2012a) and later expanding their research to fixed contaminant-load processes (Zhou et al, 2012b). The proposed approach is based on the multi-scale state-space superstructure and corresponding MINLP model.…”

Quantitative tools for cultivating symbiosis in industrial parks; a literature review

“…Zhou et al [98] constructed a multiscale state-space superstructure model for fixed flow rate processes in IWAHEN networks. The model was later expanded to address fixed flow rate and fixed contaminant systems [99].…”