Distributed energy resource station applied to LNG (Liquefied Natural Gas) plant

Abstract

The invention discloses a distributed energy resource station applied to an LNG (Liquefied Natural Gas) plant, and belongs to the technical field of LNG energy utilization. The energy resource station comprises a power generation part, a cylinder sleeve water waste-heat utilization part, and a smoke waste-heat utilization part. The power generation part comprises a commercial power input end, a fuel gas internal combustion generating set (1), a low-voltage power grid (10), and a 10.5KV high-voltage power grid (12). The cylinder sleeve water waste-heat utilization part comprises a domestic hot water heat exchanger (3), a heating exchanger (4), and a low-temperature waste-heat ORC screw power generating set (5). The smoke waste-heat utilization part comprises a smoke thermal conducting oil furnace (2) and a smoke heat exchanger (6). The energy resource station employs a combined power generation system, achieves the stepped utilization of energy, better solves problems that a conventional LNG plant is low in utilization rate of energy, large in power consumption and high in electricity cost and operation cost, fundamentally solves a problem of production cost of the LNG plant, is high in power generation efficiency, is good in system economic performance, and is clean and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of energy utilization in LNG (liquefied natural gas) liquefaction plants, and in particular relates to a distributed energy station applied to LNG liquefaction plants. Background technique [0002] With the rapid development of the national economy and the increasing demand for clean energy and environmental protection, my country's demand for LNG is increasing. The Chinese government has taken the utilization of natural gas as the main measure to optimize the energy structure and improve the atmospheric environment, and encourage the development of liquefied natural gas projects. According to the forecast of relevant energy research institutions at home and abroad, by 2013, in the world's primary energy structure, the proportion of oil will drop to less than 40%, that of coal will drop to 22%, and that of natural gas will account for 26%. . By 2030, the production and consumption of natural gas will excee...

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Problems solved by technology

[0004] In order to solve the problems of low energy utilization rate, large power consumption and high operating costs in existing LNG liquefaction plants, and fundamentally solve the production cost of LNG liquefaction plants, the present invention provides an application with high power generation efficiency, good system economy, and clean and environmental protection In the distributed energy station of the LNG liquefaction plant, the energy station can minimize the burden on the power grid and save energy

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