LNG receiving station gasification device and power plant circulating water combined use system

Abstract

The invention relates to an LNG receiving station gasification device and power plant circulating water combined use system. The system comprises an IFV gasifier, a seawater circulation pump and a power plant circulating water system, and the power plant circulating water system comprises a circulating water cooling tower, a tower discharging pool, a water sucking pool, a water taking pump and power plant cooling water using equipment which are connected in sequence. LNG uses circulating backwater of a power plant circulating water field as a heat source, the LNG receives heat to be vaporizedinto NG, meanwhile, the cooled circulating backwater is sent back to the power plant circulating water device to serve as cooling cycle supply water for a power plant condenser and a heat exchanger, and energy cascade utilization is achieved. The opening degree of a temperature control TCV valve is set by an outlet of the IFV gasifier, and it is ensured that the temperature of the water supplied to a power plant is within a lower range. Through control interlocking, the overall control process is achieved through temperature and flow transmitters arranged on a pipe line of the water discharging side of the IFV gasifier and a PLC rigid line.

Description

technical field [0001] The patent of the present invention relates to the field of LNG receiving station gasification device and power plant circulating water system, and specifically relates to a system for combined utilization of LNG receiving station gasification device and power plant circulating water, which can realize the sharing of a set of water extraction by the LNG receiving station gasification device and the power plant. water fixtures. Background technique [0002] LNG is natural gas that exists in liquid form at low temperatures, and its storage temperature is about -162°C. Generally, LNG needs to be re-gasified into gaseous natural gas before it can be used. Generally, LNG receiving stations are built in coastal and riverside ports, and seawater intake pumps are installed to gasify LNG with seawater as a heat source. The heat exchange needs of heaters and boilers also require that the power plant be located as close to the water source as possible. This cre...

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Problems solved by technology

[0009] 1. The water demand of the power plant is very large, and the cooling time of the circulating water is long;

[0010] 2. The LNG receiving station has a large demand for water, and the separate discharge is limited by environmental temperature changes;

[0011] 3. The cooling water system of the power plant and the LNG receiving station all need to build water intake devices and seawater pipe networks, which involve related equipment, pipelines, instruments, electrical appliances, etc., and the investment amount is relatively large;

[0012] 4. Both economic and environmental benefits are affected to a certain extent

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