具有柔性拓扑结构的厂际多周期换热网络优化

doi:10.11949/0438-1157.20230841

摘要/Abstract

摘要：

针对厂际多周期换热网络优化，提出了一种考虑柔性设计的数学规划模型，旨在解决现有网络设计缺乏灵活性及无法适应生产波动等问题。该模型由两个子模型组成，第一个子模型通过厂际热集成的超结构模型优化各个周期内的换热网络结构，第二个子模型以年度总成本费用为目标函数，优化换热器面积与热负荷。在每个工厂内，所有换热器都具有共享功能，通过开闭阀门调整过程物流走向，改变网络结构以完成热量传递任务。案例测试表明最小网络年度总成本费用为210919.4 USD·a^-1，需要设置13台共享换热器，其中工厂1有6台，工厂2有4台，工厂3有3台。提出的厂际多周期换热网络优化模型具有设计灵活性高、应对生产环境变化能力强等特点，为企业提供了一种更为智能且高效的换热网络设计方法。

关键词: 换热网络, 多周期, 换热器, 柔性设计

Abstract:

This paper proposes a flexible heat exchanger network model for multiple factories and periods, aiming to solve the problems of inflexibility and inability to adapt to changing production environments in existing heat exchanger network designs. The model consists of two sub-models: the first sub-model uses a multi-factory superstructure heat exchanger network model to solve the heat exchanger network structure for each period, and the second sub-model solves the multi-period heat exchanger network design for each factory with the annual total cost as the objective function. In each factory, all heat exchangers are shared and the network structure can be easily changed to meet the heat exchange demand by adjusting the logistics flow when the period or conditions change. The case test shows that the minimum total annual network cost is 210919.4 USD·a^-1, and 13 shared heat exchangers need to be installed, including 6 in factory 1, 4 in factory 2, and 3 in factory 3. The flexible heat exchanger network model proposed in this paper has the characteristics of high design flexibility and strong ability to respond to changes in production environments, providing industrial enterprises with a more intelligent and efficient heat exchanger network design method.

Key words: heat exchange network, multi-period, heat exchanger, flexible design

中图分类号:

TQ 021.8

李孟原, 崔祎, 王彧斐, 杨路, 李海东, 张奇琪, 常承林. 具有柔性拓扑结构的厂际多周期换热网络优化[J]. 化工学报, 2023, 74(11): 4634-4644.

Mengyuan LI, Yi CUI, Yufei WANG, Lu YANG, Haidong LI, Qiqi ZHANG, Chenglin CHANG. Optimization of multi-plant and multi-period heat exchanger network with flexible topology configuration[J]. CIESC Journal, 2023, 74(11): 4634-4644.

图/表 7

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物流	周期	ti/℃	to/℃	h/(kW·m^-2·℃^-1)	F/(kW·℃^-1)	ρ/(kg·m^-3)	c_p /(kJ·kg^-1·℃^-1)
H1(P1)	1	250	60	1.1	20	10	612
	2	280	60	1.0	30	10	612
	3	300	100	1.2	25	10	612
H2(P1)	1	500	200	1.5	25	10	850
	2	450	200	1.6	40	10	850
	3	480	200	1.5	30	10	850
H3(P2)	1	70	60	1.5	250	1000	820
	2	90	80	1.5	220	1000	820
	3	80	70	1.5	230	1000	820
H4(P2)	1	120	100	1.3	150	500	520
	2	130	110	1.4	130	500	520
	3	140	120	1.5	160	500	520
H5(P3)	1	150	140	1.2	300	1500	650
	2	170	160	1.3	320	1500	650
	3	180	170	1.4	310	1500	650
H6(P3)	1	140	120	1.6	50	600	800
	2	120	100	1.6	50	600	800
	3	130	110	1.6	50	600	800
C1(P1)	1	130	140	1.2	300	1000	700
	2	120	130	1.0	350	1000	700
	3	110	120	1.3	320	1000	700
C2(P1)	1	200	210	1.6	250	500	720
	2	230	240	1.5	230	500	720
	3	220	230	1.4	240	500	720
C3(P2)	1	35	100	1.7	25	10	600
	2	25	120	1.8	22	10	600
	3	45	150	1.8	23	10	600
C4(P2)	1	110	160	1.2	25	10	700
	2	100	150	1.3	22	10	700
	3	120	160	1.4	23	10	700
C5(P3)	1	75	130	1.5	30	15	650
	2	65	120	1.6	30	15	650
	3	55	110	1.5	30	15	650
C6(P3)	1	180	190	1.4	200	1000	700
	2	200	210	1.5	200	1000	700
	3	230	240	1.6	200	1000	700
Hu		280	279	1.8
Cu		15	20	1.0

物流	周期	ti/℃	to/℃	h/(kW·m^-2·℃^-1)	F/(kW·℃^-1)	ρ/(kg·m^-3)	c_p /(kJ·kg^-1·℃^-1)
H1(P1)	1	250	60	1.1	20	10	612
	2	280	60	1.0	30	10	612
	3	300	100	1.2	25	10	612
H2(P1)	1	500	200	1.5	25	10	850
	2	450	200	1.6	40	10	850
	3	480	200	1.5	30	10	850
H3(P2)	1	70	60	1.5	250	1000	820
	2	90	80	1.5	220	1000	820
	3	80	70	1.5	230	1000	820
H4(P2)	1	120	100	1.3	150	500	520
	2	130	110	1.4	130	500	520
	3	140	120	1.5	160	500	520
H5(P3)	1	150	140	1.2	300	1500	650
	2	170	160	1.3	320	1500	650
	3	180	170	1.4	310	1500	650
H6(P3)	1	140	120	1.6	50	600	800
	2	120	100	1.6	50	600	800
	3	130	110	1.6	50	600	800
C1(P1)	1	130	140	1.2	300	1000	700
	2	120	130	1.0	350	1000	700
	3	110	120	1.3	320	1000	700
C2(P1)	1	200	210	1.6	250	500	720
	2	230	240	1.5	230	500	720
	3	220	230	1.4	240	500	720
C3(P2)	1	35	100	1.7	25	10	600
	2	25	120	1.8	22	10	600
	3	45	150	1.8	23	10	600
C4(P2)	1	110	160	1.2	25	10	700
	2	100	150	1.3	22	10	700
	3	120	160	1.4	23	10	700
C5(P3)	1	75	130	1.5	30	15	650
	2	65	120	1.6	30	15	650
	3	55	110	1.5	30	15	650
C6(P3)	1	180	190	1.4	200	1000	700
	2	200	210	1.5	200	1000	700
	3	230	240	1.6	200	1000	700
Hu		280	279	1.8
Cu		15	20	1.0

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