A layered seawater desalination device based on carbon dioxide hydrate method
A carbon dioxide, layered technology, applied in seawater treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as energy consumption reduction, system redundancy, complexity, etc., achieve concentrated and compact functions, improve reaction rate, low cost effect
Active Publication Date: 2016-01-13
DALIAN UNIV OF TECH
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At present, there are several methods for desalination of seawater using the hydrate method in China. Some are based on compression refrigeration cycles, and some are based on the combination of carbon dioxide capture and seawater desalination. However, their systems are redundant and relatively complicated, and their energy consumption is still high. has the potential to reduce
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[0026] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.
[0027] As shown in the figure, according to the structure connection of the device, the method of using the device to desalinate seawater by carbon dioxide hydrate method is as follows:
[0028] (1) Inspection: Introduce seawater into the clarification tank 1 to deal with impurities, all valves are fully closed, and the amount of seawater raw materials and carbon dioxide gas is sufficient;
[0029] (2) Water supply: the pump 3 is running, the outlet gate valve 12-1 is automatically opened, and the seawater flows through the tube of the first-stage volumetric heat exchanger 4-1 and enters the second-stage volumetric heat exchanger 4-2 Temporarily stop in the tank of the reactor, when the seawater stock in the second-stage heat exchanger 4-2 reaches the seawater capacity of the reactor body 10, the pump 3 stops and th...
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Abstract
The invention provides a carbon dioxide hydrate method-based layered seawater desalting plant and belongs to the technical field of hydrate application. A porous medium is reasonably distributed in a hydrate reactor; the hydrate generation condition is gas supersaturation; the decomposition condition is depressurization decomposition; an intelligent drain part automatically adjusts the valve opening and the flow direction according to the flow rate and the salinity. According to the carbon dioxide hydrate method-based layered seawater desalting plant, the recycling of carbon dioxide is realized and the need of large-scale resource utilization of carbon dioxide is satisfied; a two-stage heat exchanger is used for precooling so that the cooling capacity loss is decreased and the energy utilization rate is improved; the reaction speed is improved through a gas bubbling method in the hydrate generation process and constant-pressure gas suction is carried out to ensure relatively high hydrate output; the emission is seawater concentrated at normal temperature so that no pollution is caused to the environment; the freshwater is automatically detected and separated and the parts intermittently and periodically work so that the operation cost is optimized and the large-scale continuous production is realized. The carbon dioxide hydrate method-based layered seawater desalting plant is reasonable in structure, concentrated and compact in function, stable and reliable in operation process, low in cost, energy-saving and environment-friendly, and has the effect of satisfying the industrial production requirements.
Description
technical field [0001] The invention belongs to the technical field of hydrate application and relates to a layered seawater desalination device based on a carbon dioxide hydrate method. Background technique [0002] In recent years, due to the lack of fresh water resources, many countries in the world are conducting research on the application of seawater desalination technology, and China has also achieved many technical achievements in the field of seawater desalination. At present, there are several methods for desalination of seawater using the hydrate method in China. Some are based on compression refrigeration cycles, and some are based on the combination of carbon dioxide capture and seawater desalination. However, their systems are redundant and relatively complicated, and their energy consumption is still high. has the potential to be reduced. The basic principle of carbon dioxide hydrate method is to use carbon dioxide hydration agent to generate hydrate. Due to ...
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IPC IPC(8): C02F1/00C02F103/08
CPCC02F1/00C02F2103/08
Inventor 宋永臣杨明军郑嘉男刘瑜赵越超蒋兰兰
Owner DALIAN UNIV OF TECH