Gasifying station with plunger pump

Abstract

The invention belongs to the technical field of gasifying stations in the natural gas industry, and specifically relates to a gasifying station with a plunger pump. The gasifying station comprises a tank car, a storage tank, an air temperature type gasifier and a pressure regulation-measurement-odorizing sled, wherein the pressures of the tank car and the storage tank are balanced by an unloadingpressurizing sled so that the pressure in the tank car is increased; LNG is conveyed into the storage tank for storage; the storage tank is provided with a storage tank pressurizer; when the storage tank discharges the LNG, the storage tank pressurizer pressurizes the storage tank to increase the pressure of the storage tank, then a liquid-phase outlet valve of the storage tank is opened; after the LNG in the storage tank is conveyed to the air temperature type gasifier through the pressure difference, the LNG is conveyed to a municipal gas pipe network or a gas boiler by the pressure regulation-measurement-odorizing sled; a plunger pump is additionally arranged between the storage tank and the air temperature type gasifier; the plunger pump is controlled by a frequency converter; thus, the need for a working pressure of over 0.8MPa for a rear-end user and the varying requirements of gas consumption can be met.

Description

Technical field [0001] The invention belongs to the technical field of gasification stations in the natural gas industry, and specifically relates to a gasification station with a plunger pump. Background technique [0002] LNG gasification stations can be divided into single-point direct-supply gasification stations and LNG satellite stations according to different supply objects, which are used to receive, store and gasify LNG purchased upstream to supply gas to the local area. [0003] The process flow of the LNG gasification station is generally: LNG is transported from the tanker to the gasification station. After the tanker pressure is balanced with the pressure of the storage tank, the pressure inside the tanker is increased, and the LNG in the tanker is sent to the LNG storage tank for storage. When draining from the LNG storage tank, the pressure of the storage tank is increased by the self-pressurization system of the storage tank, and then the liquid phase outlet valve o...

AI Technical Summary

Problems solved by technology

[0004] The existing gasification station process technology can only meet the needs of back-end users with a working pressure of P≤0.8MPa, but cannot meet the needs of natural gas with a working pressure of P>0.8MPa.

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