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A Jet Ionizer Coupled Mechanical Mist Eliminator for Wet Flue Gas Desulfurization

A wet flue gas desulfurization and ionizer technology, which is applied in combination devices, separation methods, dispersed particle separation, etc., can solve the problems of low efficiency of mechanical mist eliminators in removing fine mist droplets, and achieve increased gravitational sedimentation and Inertial collision effect, stable discharge state, and low equipment cost

Active Publication Date: 2017-01-25
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problem of low demisting efficiency of mechanical demisters for fine mist droplets, and proposes a jet ion generator coupling mechanical demister for wet flue gas desulfurization, that is, between the spray layer of the wet desulfurization tower and the demister Jet ionizer installed between mechanical demisters

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  • A Jet Ionizer Coupled Mechanical Mist Eliminator for Wet Flue Gas Desulfurization
  • A Jet Ionizer Coupled Mechanical Mist Eliminator for Wet Flue Gas Desulfurization
  • A Jet Ionizer Coupled Mechanical Mist Eliminator for Wet Flue Gas Desulfurization

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Embodiment Construction

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0020] figure 1 A schematic diagram of the system of the jet ionizer coupled with a mechanical demister method. The jet ion generator 1 is placed between the spray layer 3 of the desulfurization tower 2 and the mechanical demister 4 in the following manner Figure 5 The ion flow of the jet ionizer 1 is perpendicular to the flow direction 12 of the mist-containing flue gas, or as Image 6 The acute angle of the ion flow of the jet ionizer 1 is in the flow direction 12 of the mist-containing flue gas. The jet ion generator 1 is composed of a pointed electrode 7 and a spray chamber 8. The pointed electrode 7 is made of metal material, and the spray chamber 8 is made of non-metallic insulating material. The pointed electrode 7 is placed inside the spray chamber 8 and close to the outlet of the spray chamber. At 10 locations, the pointed electrode 7 is connected to the high-...

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Abstract

The invention discloses a method for a jet flow ionizer coupling mechanical demister used for wet process flue gas desulfurization. A jet flow ionizer is arranged between a spray layer of a wet process desulfurization tower and a mechanical demister, air is changed to a mixed gas of ion and air (namely ion air) to be sprayed out to enter flue gas between the spray layer of the wet process desulfurization tower and the mechanical demister, the sprayed ion collides with fogdrop in the flue gas so that the fogdrop is charged to become charged fogdrop, the charged fogdrop collides and combines with de-energized fogdrop due to electrostatic force to form fogdrop with large size and large mass, and therefore, the collecting and removal efficiency of the mechanical demister for fine fogdrop can be improved. The demister can be used for purification of fog-containing flue gas of a wet process flue gas desulfurization equipment system, can be used for purification of water mist gas, acid mist gas and other pollution gases, can be used as an ion source, cannot increase land occupation, and is low in operation cost, simple to operate and convenient to manage.

Description

Technical field [0001] The invention relates to a jet ion generator coupled mechanical defogger for wet flue gas desulfurization, and belongs to the technical field of gaseous pollutants control for exhaust gas of coal-fired boilers. Background technique [0002] Coal is an important fossil energy, and it emits a lot of pollutants during the combustion process, such as sulfur dioxide (SO 2 ), nitrogen oxides (NOx), particulate matter (PM) and heavy metals (such as mercury, Hg, etc.), which seriously pollute the atmosphere and endanger human health. In 2012, my country’s total sulfur dioxide emissions were 21.176 million tons, while the direct combustion of coal has an impact on SO 2 The pollution contribution rate reached 79%, of which the coal consumption of electricity and coal-fired heat accounted for 55% of the total. 2 The pollution contribution rate was 45% respectively. At present, wet methods including limestone / gypsum method, ammonia method, magnesium method, and two-alk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00B01D53/32
Inventor 李杰商克峰姜楠鲁娜吴彦
Owner DALIAN UNIV OF TECH