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本文提出了一种结合甲醇化学回热循环与低温多效蒸馏海水淡化系统的新型联产系统。该系统利用化学回热循环的余热驱动海水淡化子系统,同时海水淡化生产出的淡水部分供化学回热循环所需,实现了系统水电化工联产。文中对该循环进行了热力性能研究,当注汽率为0.04、透平进气温度为1308℃的基本工况下,循环电水比为543 kJ/kg、效率为46.2%;相对同输出分产系统,节能率达到19.3%;参数敏感性分析表明注汽率对循环的影响较为显著。
In this paper, a new combined production system combining methanol chemical thermal cycle and low temperature multi-effect distillation seawater desalination system is proposed. The system utilizes the residual heat of the chemical recuperation cycle to drive the seawater desalination subsystem, and at the same time the fresh water produced by desalination of seawater is required for the chemical recuperation cycle, thus realizing the system hydropower and chemical cogeneration. In this paper, the thermal performance of this cycle was studied. Under the basic operating conditions of steam injection rate of 0.04 and turbine inlet temperature of 1308 ℃, the circulating water / electricity ratio was 543 kJ / kg and the efficiency was 46.2% As a result, the energy saving rate reached 19.3%. The parameter sensitivity analysis showed that the influence of the steam injection rate on the circulation was significant.