Solid fuel power station waste comprehensive treatment process and its equipment
A solid fuel and comprehensive treatment technology, applied in waste treatment, solid waste removal, gas treatment, etc., can solve the problems of staying in the test stage, far away from practical application, and increased unsafe factors
Active Publication Date: 2015-08-12
WUHAN KAIDI ENG TECH RES INST CO LTD
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Problems solved by technology
Among the three storage methods, the first geological storage technology has been applied to a certain extent, but the change of geological conditions will lead to the increase of unsafe factors, and with the extension of time, its unsafety will become more and more prominent
The second deep-sea storage technology is easy to damage the deep-sea ecological environment, and it is rarely used at present
The third carbonate storage technology, also known as mineral storage technology, has the best fixation effect on carbon dioxide in theory, and the carbon dioxide converted into salt will not be released into the atmosphere again, so it has received widespread attention, but it still remains In the experimental stage of fixing carbon dioxide, it is still far from practical application
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[0044] The process and equipment of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0045] The solid fuel power station waste comprehensive treatment equipment shown in the figure mainly consists of a voltage transformation and rectification device 1, an electrolysis device 2, a carbon dioxide absorption tower 5, a hydrogen chloride synthesis tower 20, a silicate powder silo 17, and a silicate reaction Device 10, cyclone separator 14 and vacuum belt conveyor 13 and other components. in:
[0046] The output end of the transformer and rectifier device 1 is connected to the power interface of the electrolysis device 2 . The cathode hydrogen outlet of the electrolysis device 2 is connected to the hydrogen input end of the hydrogen chloride synthesis tower 20 through the hydrogen separator 21 and the hydrogen cooler 22 successively, and the anode chlorine outlet of the electrolysis device 2 i...
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A comprehensive treatment process and apparatus for solid fuel power station wastes; conditioned seawater containing metal ions of Na+, K+, Ca2+ and Mg2+ is electrolyzed to generate alkaline substances and acid gas, the alkaline substances are used to absorb carbon dioxide in the emitted flue gas of the power station, and the carbon dioxide is treated to be harmless and then discharged into the sea for storage; the acid gas is used to synthesize hydrochloric acid, and the hydrochloric acid is used for a dissolution replacement reaction with the coal ash, biomass ash or cheap silicate mineral powder discharged by the power station; the isolated dissolved solution containing the ions of Na+, K+, Ca2+, Mg2+ and Cl- is recycled and returned to the conditioned seawater for further electrolysis; and the isolated SiO2 is utilized as an industrial raw material, thus forming a beneficial cycle of the comprehensive treatment of the power station waste. The apparatus mainly comprises an electrolysis device (2), a carbon dioxide absorption column (5), a hydrogen chloride synthesis column (20), a silicate reactor (10), a cyclone separator (14), and a vacuum belt conveyer (13).
Description
technical field [0001] The invention relates to the environmental protection technology of a power station, in particular to a solid fuel power station waste comprehensive treatment process and equipment thereof. Background technique [0002] At present, most of the raw materials used in solid fuel power stations are coal, and a small part of them use recyclable biomass. my country is the largest coal-fired power generation country in the world. Coal-fired power generation units account for about 70% of all power generation units, and biomass power generation is relatively small. The waste fly ash and greenhouse gas carbon dioxide emitted by my country's coal-fired power generation ranks first in the world, and the biomass ash produced by burning biomass is also increasing year by year. According to statistics, the total emission of fly ash in my country has exceeded 375 million tons, and the annual emission of carbon dioxide has exceeded 6.1 billion tons, and the emissions...
Claims
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IPC IPC(8): B01D53/78B01D53/62C01B31/22C01B7/01C01B33/12B09B3/00C25B1/34C01B32/55
CPCB01D53/78Y02C10/04B01D2257/504B01D2251/306B01D2258/0283B01D2259/124B01D2251/304B01D2251/404B01D53/62B09B3/00Y02W30/20C01B33/143B01D2251/402Y02C20/40Y02P20/151
Inventor王志龙张岩丰薛永杰方章建郑兴才陶磊明
OwnerWUHAN KAIDI ENG TECH RES INST CO LTD