能源是人类赖以生存和发展的重要基础，在能源消耗不断攀升而带来诸多社会和环境问题的现实背景下，节能减排已成为当今人类的共识。低品位余热利用作为节能减排中的重要部分，具有巨大的发展潜力。在天然气处理厂生产加工过程中，部分工艺气体由于增压会产生大量余热。正常工况下，余热被直接冷却，能量浪费巨大。为响应国家节能减排的政策需要，针对某天然气处理厂生产余热及用户的用热情况，对余热进行供热、厂区辅助生产及生活区冬季供暖、余热制冷及余热发电等多个利用手段进行逐一分析，找到余热利用最佳方法。在工程设计中，选择合理的余热利用方案，科学、有效地利用余热，不仅可以为生产企业带来收益，还能节省能耗，切实做到节能减排。

Energy is an essential factor for developing social progress and human society. As a matter of fact, the energy conservation and emission reduction has become a consensus as it is facing social and environmental problems induced by increasing energy consumptions. As a significant component of energy technology, the low grade waste heat recovery technique has a great potential. In the process of production and processing of natural gas treatment plant, a large amount of waste heat will be generated due to boosting. Normally waste heat is directly cooled, which wastes enormous energy. In response to the national policy of energy saving and emission reduction, we aim at the analysis of the waste heat produced in the plant and the heat users, and analyze the various utilization means of waste heat such as heating, auxiliary production in the plant area, winter heating in the living area, waste heat refrigeration and waste heat power generation one by one, obtaining the best way for waste heat utilization. In the course of engineering, optimizing waste heat using strategy scientifically and effectively will not only make profit to the plant enterprise but save energy consumption.