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Double-pore size high-efficiency desulfurization tray for desulfurization tower

A desulfurization tower and double-aperture technology, applied in the field of double-aperture high-efficiency desulfurization trays, can solve the problems of low flue gas flow rate, large resistance, and poor operating flexibility, and achieve the effect of reducing operating costs, small resistance coefficient, and good operating flexibility

Pending Publication Date: 2018-07-31
TONGFANG ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Less flexible operation due to larger aperture
At low load, due to the low flue gas flow rate, no effective liquid-holding layer can be formed on the desulfurization tray, so it has no obvious effect on gas-liquid mass transfer
When the load is high, the liquid-holding layer is high, which causes too much resistance

Method used

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  • Double-pore size high-efficiency desulfurization tray for desulfurization tower

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Embodiment Construction

[0016] see Figure 1 to Figure 4 , the present invention is used for the double-aperture high-efficiency desulfurization tray of the desulfurization tower, which is placed between the flue gas inlet and the lowest spray layer in the desulfurization tower, and is a through-flow porous sieve plate, which is arranged in one or more layers. The surface of the desulfurization tray is evenly distributed with openings with two diameters of round hole 1 and round hole 2. The diameter of round hole 1 is D 1 35~45mm, the hole diameter D of the second round hole 2 20~30mm, and D 2 =(50%~70%)*D 1 . The hole spacing L between the openings on the desulfurization tray is determined according to the average opening ratio of the desulfurization tray, and the average opening ratio is determined by the liquid-gas ratio and desulfurization efficiency in the desulfurization tower, usually 25-50%.

[0017] see Figure 2 to Figure 4 , are the three methods of evenly distributing the openings on...

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Abstract

The invention discloses a double-pore size high-efficiency desulfurization tray for a desulfurization tower and relates to the technical field of limestone / gypsum wet flue gas desulfurization. The double-pore size high-efficiency desulfurization tray is arranged between a flue gas inlet and a lowermost spray layer in the desulfurization tower and is a through-flow type porous sieve plate, and oneor more layers of the double-pore size high-efficiency desulfurization trays are arranged. The tray surface is uniformly provided with circular holes 1 and circular holes 2 and the sizes of the circular holes 1 and 2 are different. In the double-pore size high-efficiency desulfurization tray, the diameter D1 of the circular hole 1 is 35 to 45 mm, the diameter D2 of the circular hole 2 is 20 to 30mm, and D2 is calculated according to a formula of D2= (50% to 70%)*D1. Compared with the existing desulfurization tray, the double-pore size high-efficiency desulfurization tray can effectively improve the operation flexibility of the desulfurization tray, improve the desulfurization efficiency, and reduce the operation cost.

Description

technical field [0001] The invention relates to the technical field of limestone-gypsum wet flue gas desulfurization, in particular to a double-aperture high-efficiency desulfurization tray for a desulfurization tower. Background technique [0002] The main air pollutants produced by coal combustion are sulfur dioxide (SO 2 ), nitrogen oxides, soot (respirable particulate matter) and carbon dioxide as a greenhouse gas. Due to coal combustion emissions, my country's SO 2 pollution has become very serious. In recent years, with the gradual improvement of environmental protection requirements, in order to reduce SO in power plant flue gas 2 Boilers and other equipment (such as cement kilns, sintering machines, etc.) in many industries (such as electric power, chemical industry, steel, cement, waste incineration, etc.) have added flue gas desulfurization devices, or improved the efficiency of existing desulfurization equipment remodel. The core equipment of the desulfurizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/80
CPCB01D53/504B01D2258/0283B01D2259/126B01D2251/404B01D2251/604
Inventor 肖海涛汤乐萍邵小珍张彦锋孙超
Owner TONGFANG ENVIRONMENT
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