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Axial and radial cross flow moving bed reactor and activated coke flue gas desulfurization and denitration technology thereof

A technology for desulfurization, denitrification, and activated coke, which is applied in air quality improvement, chemical instruments and methods, and dispersed particle separation, etc. It can solve the problems of inefficient and reasonable activated coke stratification, low combined performance of upper and lower sections, and insufficient gas-solid contact. , to achieve the effect of saving equipment investment and operating costs, sufficient gas-solid contact, and continuous and stable operation

Active Publication Date: 2012-12-19
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of insufficient gas-solid contact in the background technology, low utilization rate of active coke in the gas seal section, inefficient and reasonable stratification of active coke, and low combined performance of the upper and lower sections, and provide an axial and radial cross flow The moving bed reactor and its activated coke flue gas desulfurization and denitrification process realize the SO in the flue gas 2 , NO x Joint removal and integrated purification of pollutants such as , mercury and dioxin

Method used

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  • Axial and radial cross flow moving bed reactor and activated coke flue gas desulfurization and denitration technology thereof
  • Axial and radial cross flow moving bed reactor and activated coke flue gas desulfurization and denitration technology thereof
  • Axial and radial cross flow moving bed reactor and activated coke flue gas desulfurization and denitration technology thereof

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Embodiment

[0032] The flue gas purification and sulfur recovery system designed in this example can be used for the desulfurization and denitration flue gas of a single-unit 1000MW ultra-supercritical coal-fired thermal power unit in a coal-fired power plant, a 600-square-meter large smelting and sintering machine, a large coal-fired boiler or other non-ferrous metallurgical tail gas Purify the field. Designed to handle flue gas volume 3.0×10 6 m 3 / h, depending on the situation, use a single adsorption reactor or multiple adsorption reactors in parallel for processing, and the designed flue gas space velocity is 300~500h -1 . SO in flue gas components 2 The volume fraction is 1000~4000×10 -6 , NO x The volume fraction is 200~800×10 -6 , Also contains some toxic heavy metal ions mercury, cadmium, etc., harmful smoke and dust. The adsorption temperature is 80-130°C; the adsorption catalyst used is a columnar desulfurization and denitration activated coke with qualified performance and econ...

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Abstract

An axial and radial cross flow moving bed adsorption reactor and an activated coke flue gas desulfurization and denitration technology thereof are used for realizing the purposes that SO2, NOx, mercury, dioxin and other pollutants in flue gas are unitedly removed and integrally purified in an adsorption reactor, and belong to the technical field of comprehensive waste flue gas treatment. The adsorption reactor is a combined type double-section double-inverse U-type axial and radial cross flow moving bed, awherein desulfurization area is arranged at a lower section of the axial and radial cross flow moving bed, an annular internal activated coke particle layer and an annular external activated coke particle layer are arranged, and the desulfurization area is divided into a coarse desulfurization area and a fine desulfurization area; a denitration area is arranged at an upper section of the axial and radial cross flow moving bed, and an activated coke particle layer is arranged; an ammonia spray pipe is arranged between the upper section and the lower section; and flue gas is filled along a double-port counter annular gas flow channel structure, the flue gas of the lower section centripetally flows to be desulfurized, and the flue gas of the upper section centrifugally flows to be denitrated. According to the reactor and the technology, desulfurization and denitration are realized in one adsorption reactor, so the adsorption reactor has the advantages of efficient utilization of activated coke, uniform flue gas mixing, sufficient gas-solid contact, stability and reliability in operation, operation cost saving and the like.

Description

Technical field [0001] The invention belongs to the technical field of comprehensive treatment of flue waste gas, and relates to flue gas desulfurization, denitrification, mercury removal, dioxin removal, dust removal (including coal-fired thermal power, coal-fired boilers, iron-making sintering machines, non-ferrous metallurgy and chemical building materials). PM 2.5 ) And the flue (waste) gas integrated purification technology for hydrogen halide, especially the axial-radial cross-flow moving bed adsorption reactor and its activated coke flue gas desulfurization and denitration process. Background technique [0002] The rapid development of industrialization has promoted the rapid development of social science and technology. However, while human beings are enjoying the scientific and technological achievements, they are also suffering from various environmental pollution problems caused by fossil fuels. A large amount of SO released into the atmosphere every year 2 And NO x Ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/76B01D53/60B01D53/64B01D53/70
CPCY02A50/20
Inventor 高继贤李静阎冬杨春琪
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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