煤层气利用新方案

在介绍煤层气的常规利用方案的基础上，提出了两种利用煤层气的新方案：一是采用变压吸附技术，纯化瓦斯气，将低浓度瓦斯气浓缩为高浓度瓦斯气，加压后成为CNG，用作CNG气源或较远距离城市的天然气气源；二是在第一种方案的基础上，将高浓度瓦斯气全部采用深冷法加以液化，生产LNG，并将LNG运送至更远距离用作LNG加气站、CNG加气站气源。最后还以松藻煤电公司为例，作了新方案的工程预算

NEW PROPOSAL FOR COALBED METHANE UTILIZATION

Based on the conventional coalbed methane (CBM) utilization proposal, two new CBM utilization proposals were put forward. The first is pressure wwing adsorption technology (PSA). PSA technology can be used to enrich low-concentration CBM to high-concentration CBM. Then, CBM can be compressed and converted to CNG, which can be served as gas source for CNG or gas source for remote cities. The second is based on the first one. The high-concentration CBM can be liquefied to produce LNG with deep refrigeration method. The LNG resources can be served as gas resources for LNG stations and CNG stations which are located in remoter places. Songzao C&E Co., Ltd. was taken as an example to perform project budget for the two new proposals.