Method for trapping carbon dioxide

A carbon dioxide, sodium hydroxide technology, applied in chemical instruments and methods, separation methods, inorganic chemistry and other directions, can solve problems such as inconvenience, and achieve the effect of easy and safe storage

Inactive Publication Date: 2010-07-14
林健峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] This shows that the above-mentioned existing carbon dioxide capture method obviously still has inconvenience and defects in method and use, and needs to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and generally there is no suitable method to solve the above-mentioned problems. This is obviously the relevant industry Urgent problem

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preparation example Construction

[0052] Among them, in the preparation of sodium hydroxide (NaOH), the sodium hydroxide is a by-product of the process of generating chlorine gas for industry. The common practice is to electrolyze saturated salt water until all the chlorine elements become chlorine gas and escape, and stay in the solution at this time. There is only sodium hydroxide as a solute, and the reaction equation is:

[0053] 2NaCl+2H 2 O→2NaOH+Cl 2 +H 2

[0054] Sodium hydroxide, the reactant required in the carbon dioxide capture method of the present invention, can be produced by electrolyzing saturated salt water, wherein the saturated salt water can be obtained from waste products after seawater desalination.

[0055] Early seawater desalination was concentrated in the dry Middle East, and now with the rapid development of industry and commerce, coupled with the gradual increase in population, the whole world needs a lot of water. Today, it is increasingly difficult to develop water sources, an...

Embodiment 1

[0074] Preparation of Sodium Hydroxide (NaOH)

[0075] see figure 1 As shown, the saturated salt water or brine (Brine) is introduced in a continuous manner to keep the electrolysis reaction going on continuously, and sodium hydroxide (NaOH) solution can be obtained continuously, wherein in an electrolytic cell 10, a stable electric current 40 Ampere (A), and potential control greater than 1.5 volts (V), and an ion exchange membrane 16 is set at the center of the electrolytic cell 10, and brine is introduced at the inlet 12, and the bittern flows through the electrolytic cell 10, in The reaction of the anode 17 of the electrolyzer is: 2Cl-→Cl 2 +2e-, chlorine gas produced by electrolysis is released from the anode; while the reaction at the cathode 18 of the electrolytic cell is: 2H 2 O+2e-→2OH-+H 2 , Electrolysis produces hydrogen gas from the cathode, and the sodium ions (Na+) in the solution combine with hydroxide ions (OH-) to form sodium hydroxide solution (NaOH(aq)) a...

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Abstract

The invention relates to a method for trapping carbon dioxide. The method comprises the following steps of: (1) electrolyzing a saturated saline solution to obtain sodium hydroxide; (2) adding the sodium hydroxide into seawater to convert magnesium chloride and calcium chloride in the seawater into magnesium hydroxide and calcium hydroxide; and (3) leading carbon dioxide into the water containing the magnesium hydroxide and the calcium hydroxide to convert into magnesium carbonate and calcium carbonate. The invention can effectively, quickly and safely trap the carbon dioxide, decrease the content of carbon dioxide in the air and achieve the effect of emission reduction of carbon dioxide.

Description

technical field [0001] The present invention relates to a kind of can make carbon dioxide (CO 2 ) reduction capture methods, especially involving a chemical reaction to convert industrial emissions of carbon dioxide (CO 2 ) method for capturing. Background technique [0002] There are a variety of chemical substances in the atmospheric environment, which will not affect the ecology under normal conditions and concentrations. However, with the pace of industrialization and the use of various industrial machinery and vehicles, the amount of chemical substances discharged is increasing. The more, and the concentration of emissions exceeds the standard, as long as the concentration of any chemical exceeds the standard, it will cause air pollution. [0003] There are many types of air pollutants today, the common and monitored air pollutants are: carbon dioxide (Carbon dioxide CO 2 ), carbon monoxide (Carbon monoxide CO), sulfur dioxide (Sulfur dioxide SO 2 ), nitrogen oxides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/62B01D53/78C01B31/20C01B32/50
CPCY02C10/04Y02A50/20Y02C20/40Y02P20/151
Inventor 林健峰
Owner 林健峰
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