An integrated device and method for seawater desalination in-situ co-production of high-quality activated carbon

Abstract

The invention belongs to the field of environmental protection technology, and provides an integrated device and method for in-situ co-production of high-quality activated carbon from seawater desalination. Pyrolysis and activation integrated device, condensation recovery device, pressurization device A, water vapor storage tank, pressurization device B, pyrolysis gas storage tank, regenerative combustion heat exchange device; the preparation process of the present invention adopts orderly operation And intermittent operation, sequential batch co-production of high-quality energy storage activated carbon to realize seawater desalination simultaneously, easy to operate, high economic benefits, less environmental pollution during the production process, easy to promote large-scale production, and has broad commercial and industrial application prospects . In addition, from the perspective of carbon material preparation, the chemical activator: inorganic salt in seawater and the physical activator: water vapor + pyrolysis gas are cleverly used at the same time to achieve chemical-physical simultaneous activation.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and specifically relates to an integrated device and method for in-situ co-production of high-quality activated carbon by seawater desalination, which can realize zero input of chemical products and near zero discharge of pyrolysis waste gas. Background technique [0002] 75% of the earth's area is covered by water, and the total water storage is about 1.3 billion square kilometers, but 97.5% of the water is sea water, and 97% of the 2.5% fresh water resources are glaciers. The fresh water resources that can be directly used by humans only account for 0.26%. With the rapid development of the global economy and the continuous surge of population, the problem of water shortage is becoming more and more serious. Alleviating the shortage of water resources has far-reaching strategic significance for our country and the whole world. Since seawater reserves are so abundant, desalinat...

AI Technical Summary

Problems solved by technology

The problems of the existing thermal seawater desalination technology are: high operating temperature, high energy consumption, large investment in equipment, etc.

Therefore, there are the following problems: (1) the existing activators are all strongly alkaline or strongly acidic, and long-term operation will cause serious corrosion to the equipment and reduce the service life, thereby limiting the large-scale production of activated carbon; (2) the existing catalysts are all Chemical reagents, a large amount of residual liquid will be produced during the activation process. These residual liquids are usually not treated in time, which will cause secondary pollution of the water body and affect the ecological environment; (3) In order to obtain high-quality activated carbon with a higher specific surface area, the laboratory Or in actual production, a large amount of activator needs to be purchased, and the production process cost is relatively high

Images