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Device and method for preparing solid ice by use of cold energy released through LNG vaporization

A technology of solid and cold energy, which is applied in the field of devices for producing solid ice, and can solve problems such as energy waste

Pending Publication Date: 2018-09-11
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the other hand, the traditional ice-making system uses electricity to obtain cold energy, which causes a lot of energy waste. Using the latent heat released by LNG gasification to make ice can not only make full use of the cold energy of LNG, but also improve energy utilization. efficiency, but also reduce power consumption, reduce energy waste, can be said to kill two birds with one stone

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  • Device and method for preparing solid ice by use of cold energy released through LNG vaporization

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Embodiment 1

[0036] The invention provides a device for producing solid ice by releasing cold energy from LNG gasification, see figure 1 , including LNG vaporizer 2, NG superheater 3 and water precooler 4 placed side by side, the top of LNG vaporizer 2 is communicated with the first low-boiling point working fluid branch pipeline 10, the middle part of which is connected with the middle part of NG superheater 3, and NG superheats The top of the device 3 is communicated with a second low-boiling-point working medium branch pipeline 11, the middle of which is also connected to the middle of the water precooler 4, and the top of the water precooler 4 is connected to the ice maker 5 through a precooling water pipeline 13, and the The ice device 5 is also connected with a low-boiling point working fluid pipeline, which includes a first low-boiling point working fluid branch pipeline 10, a second low-boiling point working fluid branch pipeline 11 and a third low-boiling point working fluid pipel...

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Abstract

The invention discloses a device and a method for preparing solid ice by the use of cold energy released through LNG vaporization. The device comprises an LNG vaporizer 2, an NG superheater 3 and a water precooler 4 which are arranged side by side, a first lower-boiling-point working medium branch pipe 10, a second lower-boiling-point working medium branch pipe 11, a water precooler (4), a precooled water pipe 13 and an ice maker 5. The ice maker 5 is also connected to a low-boiling-point working medium pipe. A thermoregulator 8 is provided with a first-stage liquid-vapor separator 6, which isconnected to a second-stage liquid-vapor separator 7. The second liquid-vapor separator 7 is also connected to the ice maker 5. The method comprises seven steps. Cold energy released by LNG vaporization is fully utilized to prepare solid ice, thus reducing energy waste.

Description

technical field [0001] The invention relates to a device for producing solid ice, more specifically to a device and method for producing solid ice by utilizing LNG gasification to release cold energy, and belongs to the technical field of comprehensive energy utilization. Background technique [0002] LNG is a low-temperature liquid formed by purifying and liquefying natural gas. The LNG industry has developed very rapidly at home and abroad in recent years. The production and application of LNG in the world is growing at an average annual rate of 20%. With the sustained and rapid development of China's economy, my country's demand for LNG also continues to increase. [0003] At the LNG receiving station, LNG needs to be gasified before use, and a large amount of cold energy will be released during the gasification process, about 860~830kJ / kg. If the cold energy is not utilized, it will cause a huge waste of cold energy resources and cold pollution of the environment. Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25C1/00F17C7/04F17C13/00
CPCF17C7/04F17C13/00F25C1/00F17C2221/033F17C2227/0327F17C2227/0309F17C2223/0161F17C2225/0123
Inventor 陶汉中芮磊席昕
Owner NANJING UNIV OF TECH
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