Opportunities for the integration of absorption heat pumps in the pulp and paper process

被引：27

作者：

Bakhtiari, Bahador ^{[1
]}

Fradette, Louis ^{[1
]}

Legros, Robert ^{[1
]}

Paris, Jean ^{[1
]}

机构：

[1] Ecole Polytech, Dept Chem Engn, Montreal, PQ H3C 3A7, Canada

来源：

ENERGY | 2010年 / 35卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Absorption heat pumps; Pulp and paper industry; Kraft process; Heat upgrading; ENHANCED ENERGY EFFICIENCY; PINCH ANALYSIS; PERFORMANCE; INDUSTRY; CYCLES; MILL;

D O I：

10.1016/j.energy.2010.03.047

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Implementation of absorption heat pumps (AHPs) in a Kraft pulping process was studied using a new methodology for the optimal integration of those devices in a process. Two generic opportunities were identified for an energy and water optimized mill: (i) integration of a double lift chiller in the bleaching chemical making plant to produce chilled and hot water simultaneously, using MP steam as the driving energy and, (ii) installation of a single stage heat pump to concentrate the black liquor and produce useful hot water by upgrading heat from the bleaching effluent and using MP steam as driving energy. The principles of AHPs operation and their efficient integration into a process are described. The simple payback time (SPB) and net present value (NPV) were used to evaluate the interest of such implementations. Considering 63 $/MWh for the steam price, SPB of 2.7 and 1.7 years have been estimated for the two cases. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4600 / 4606

页数：7

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