化工学报2016，Vol.67Issue(3)：779-787,9.DOI:10.11949/j.issn.0438-1157.20150791
煤制气中甲烷化余热利用集成串级吸收式制冷新工艺
A novel integrated cascade absorption refrigeration technology by using waste heat in CTG’s methanation process
摘要
Abstract
Methanation process in coal to synthetic natural gas (CTG) produces a large amount of waste heat. It will cause a huge loss of economic value and energy efficiency with this part of heat emitted into the atmosphere directly. LiBr absorption refrigeration and NH3 absorption refrigeration cascade refrigeration technology (CRT) is driven by waste heat from methanation process. CRT can produce−40℃ ammonia used in rectisol which can replace a part of compression refrigeration. Thus, it can reduce power consumption significantly and increase energy utilization efficiency. For example, CRT is integrated with methanation applied in a 4 billion m3·a−1 SNG plant. As a result, 16.2% compression refrigeration load is substituted, equivalent to saving 18000 tons standard coal per year. The dynamic payback period is about 1.7 years.关键词
天然气/余热/制冷/状态方程/计算机模拟Key words
natural gas/waste heat/refrigeration/equation of state/computer simulation分类
能源科技引用本文复制引用
杨声,梁嘉能,杨思宇,钱宇..煤制气中甲烷化余热利用集成串级吸收式制冷新工艺[J].化工学报,2016,67(3):779-787,9.基金项目
国家自然科学基金重点项目（21136003）。@@@@supported by the National Natural Science Foundation of China(21136003) （21136003）
