简捷法确定提纯回用氢网络目标值

doi:10.11949/j.issn.0438-1157.20150759

化工学报 ›› 2016, Vol. 67 ›› Issue (3): 1008-1014.DOI: 10.11949/j.issn.0438-1157.20150759

简捷法确定提纯回用氢网络目标值

刘金豪¹, 李爱红^1,2, 刘智勇³

1. 河北工业大学化工学院, 天津 300130;
2. 承德石油高等专科学校化学工程系, 河北承德 067000;
3. 河北工业大学海洋科学与工程学院, 天津 300130

收稿日期:2015-06-01 修回日期:2015-09-19 出版日期:2016-03-05 发布日期:2016-01-12
通讯作者: 刘智勇
基金资助:
国家自然科学基金项目(21176057);国家重点基础研究发展计划项目(2012CB720305)。

A simple method for targeting hydrogen networks with purification unit

LIU Jinhao¹, LI Aihong^1,2, LIU Zhiyong³

1. School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China;
2. Department of Chemical Engineering, Chengde Petroleum College, Chengde 067000, Hebei, China;
3. School of Marine Science and Engineering, Hebei University of Technology, Tianjin 300130, China

Received:2015-06-01 Revised:2015-09-19 Online:2016-03-05 Published:2016-01-12
Contact: 67
Supported by:
supported by the National Natural Science Foundation of China (21176057) and the National Basic Research Program of China (2012CB720305).

摘要/Abstract

摘要：

与只考虑直接回用的氢网络相比,具有提纯单元的氢网络能显著减少新鲜氢气的消耗量,但其设计及求解提纯目标值过程均更为复杂。对于单杂质、提纯单元采用固定浓度模型的提纯回用氢网络,结合此类网络的特点,提出了一种简捷法确定网络目标值。首先假设提纯后氢物流量足够大,由此得出初始提纯夹点。当初始夹点估算正确时,由夹点之下的需求物流和源物流的流量与杂质质量衡算即可得出提纯回用氢网络的目标值;当初始夹点估算不正确时,可以第一次计算结果为基础判断得出正确夹点,再增加一步简单计算,也可得到提纯回用目标值。计算实例表明本文方法计算简单且有效。

关键词: 提纯回用, 氢网络, 目标值, 提纯夹点

Abstract:

Hydrogen utility consumption can be reduced significantly when purification unit is introduced in a hydrogen network. In general, design and targeting of the hydrogen network involving purification are more difficult compared to that of the network involving reuse only. In this paper, a simple method is presented for targeting the single contaminant hydrogen networks involving purification unit with fixed purified concentration model, based on the characteristics of the hydrogen networks. In the targeting procedure, the initial flow rate of the purified stream is first assumed as sufficient, and then the initial purification pinch is identified. Finally, the purification target can be obtained with a few relationships developed from material balances. If the initial purification pinch is estimated correctly, the purification target can be obtained by only one step simple calculation. If the initial purification pinch is not estimated correctly, the correct pinch point can be determined based on the results of the first step calculation. The target can be obtained by an additional step of simple calculation. The results of a few literature examples show that the purification stream consumption target of single-contaminant hydrogen networks involving purification unit can be obtained easily with the proposed method, which provides an effective tool for the targeting of hydrogen networks involving purification unit.

Key words: purification reuse, hydrogen network, target, purification pinch

中图分类号:

TQ021.8

刘金豪, 李爱红, 刘智勇. 简捷法确定提纯回用氢网络目标值[J]. 化工学报, 2016, 67(3): 1008-1014.

LIU Jinhao, LI Aihong, LIU Zhiyong. A simple method for targeting hydrogen networks with purification unit[J]. CIESC Journal, 2016, 67(3): 1008-1014.

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简捷法确定提纯回用氢网络目标值

A simple method for targeting hydrogen networks with purification unit

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