Single-tower five-section gradient purification, sulfur removal and dust removal ultra-low emission integrated device
A desulfurization and dust removal, cascade technology, applied in the direction of gas treatment, use of liquid separation agent, chemical instruments and methods, etc., can solve the problem that the desulfurization system design emission indicators of ordinary empty tower spraying cannot meet the national requirements, flue gas tailing products, Without solving the problems of ammonia desulfurization and other problems, it has achieved the effect of high desulfurization and dust removal efficiency, simple and clear structure, and is conducive to wide application
Pending Publication Date: 2016-08-17
张波
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Problems solved by technology
[0005] As the national environmental protection situation is becoming increasingly severe, the design emission indicators of the desulfurization system for ordinary empty tower spraying can no longer meet the national requirements.
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[0023] Specific implementation: the content of total particulate matter (aerosol and dust evenly represented in the form of particulate matter) in flue gas after desulfurization is not more than 5mg / Nm3, and its measurement adopts GB / T16157-1996 "Determination of particulate matter in exhaust gas from fixed pollution sources and gaseous pollutants" Sampling method" standard; the total particle content in the flue gas after desulfurization of the existing desulfurization system is 30mg / Nm3, which is reduced by 83.3%, and the SO2 content in the flue gas after desulfurization is not more than 35mg / Nm3, which meets DB371-2373-2013 "Comprehensive Discharge Standards of Regional Air Pollutants in Shandong Province".
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Abstract
The invention discloses a single-tower five-section gradient purification, sulfur removal and dust removal ultra-low emission integrated device and belongs to the field of environmental protection. The device is composed of an oxidation section, a concentration section, an absorption section, a purification washing section and a defogging section. The upper portion of the oxidation section of the device and the concentration section achieve gas communication through a pipeline, and liquid isolation is achieved through a partition plate. The upper portion of the concentration section of the device and the absorption section achieve gas communication and liquid isolation through a liquid collecting tank. The upper portion of the absorption section of the device and the purification section achieve gas communication and liquid isolation through a liquid collecting tank. A reaction gas-liquid reaction is conducted in the single-tower five-section gradient purification, sulfur removal and dust removal ultra-low emission integrated device, the reaction speed is high, the reaction is complete, and the sulfur removal efficiency is high. The system meets the ultra-low emission requirements, and is simple in structure, easy to achieve, low in cost and beneficial for wide utilization and popularization.
Description
technical field [0001] The invention relates to the field of environmental protection, in particular to a single-tower five-stage cascade purification, desulfurization and dust removal integrated device with ultra-low emissions. Background technique [0002] my country is a big coal producing and burning country in the world. The acid rain caused by sulfur dioxide emitted by coal burning has affected 40% of the country's area of nearly 4 million square kilometers, and it is still expanding. [0003] There are many ways to control sulfur dioxide in flue gas: fuel desulfurization before combustion, desulfurization during combustion of desulfurizers, and flue gas desulfurization after combustion. Judging from the current usage in various countries in the world: for coal-fired boilers, the most economical and effective method is flue gas desulfurization. [0004] At present, flue gas desulfurization technology can be divided into many types according to different classificati...
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IPC IPC(8): B01D53/78B01D53/50B01D47/06
CPCB01D47/06B01D53/50B01D53/78B01D2258/0283
Inventor 张波
Owner 张波