A combined gasification device for liquefied natural gas (lng)
A liquefied natural gas and combined gasification technology, applied in the field of LNG gasification, can solve the problems of high investment and cost of LNG receiving stations, and achieve the effects of improving safety and reliability, reducing investment and cost, and easy circulation
Active Publication Date: 2016-10-26
江苏中圣压力容器装备制造有限公司
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[0007] The purpose of the present invention is to provide a combined gasification device of liquefied natural gas (LNG) capable of reducing costs, so as to solve the technical problems of high investment and cost of LNG receiving stations in the prior art
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[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] The system structure of an embodiment of the present invention is as follows Figure 4~Figure 5As shown, the liquefied natural gas gasification device of this embodiment includes an evaporator a1 with an intermediate fluid and a submerged combustion water heater a2. Evaporator a1 with intermediate fluid includes LNG gasification section and NG superheating section. Among them, the LNG gasification section is a shell-and-tube heat exchanger with double heat exchange tube bundles. The shell-and-tube heat exchanger includes a sealed first shell 1, and a certain liquid level is sealed in the first shell 1. The height of the intermediate fluid 3, the intermediate fluid can be a refrigerant such as propane or butane, the position below the liquid surface of the intermediate fluid 3 in the first shell 1 has a lower tube bundle 11, and one en...
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The invention discloses a combined gasification device for liquefied natural gas (LNG), which comprises an evaporator with intermediate fluid and a submerged combustion water heater. The evaporator with intermediate fluid has a seawater inlet and a seawater outlet, and the submerged combustion water heater includes a burner And a water tank with an exhaust port, a smoke distributor connected to the burner is arranged in the water tank, an exhaust hole is opened on the smoke distributor, a seawater inlet control valve and a seawater discharge control valve are respectively installed at the seawater inlet and seawater outlet The water tank is provided with a water inlet pipe and an outlet pipe, the inlet end of the water inlet pipe is connected between the seawater discharge control valve and the seawater outlet, and the discharge end of the water outlet pipe is connected between the seawater inlet control valve and the seawater inlet. The invention heats the water in the water tank through the heat generated by combustible gas combustion, and the warm water in the water tank provides heat for the evaporator to heat and gasify the LNG into NG. The invention simplifies the existing gasification device and can reduce the investment and operation cost of the LNG receiving station.
Description
technical field [0001] The invention relates to a combined gasification device for liquefied natural gas (LNG), in particular to an LNG gasification device applicable to large-scale LNG receiving stations, and belongs to the technical field of LNG gasification. Background technique [0002] The LNG receiving station is generally equipped with a base-load gasifier and an emergency peak-shaving gasifier. The function of the gasifier is to heat and vaporize the low-temperature LNG at the receiving station and superheat it to above 0°C. Natural gas (NG) is then sent to the pipeline for export. The system structure of the LNG gasification device in the LNG receiving station in the prior art is as follows: figure 1 As shown, it includes the base-load gasifier with seawater as the heat source, the intermediate fluid gasifier (IFV) and the submerged combustion gasifier (SCV) with natural gas (NG) as the fuel. [0003] The heat source medium of the vaporizer with intermediate fluid...
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IPC IPC(8): F17C7/04F17C13/04F17C13/00
Inventor 郭宏新李奇刘丰刘世平田朝阳李晖何松
Owner 江苏中圣压力容器装备制造有限公司