Method for removal of inhalable particles in coal
A particulate matter removal technology, which is applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problem that coal-fired inhalable particulate matter cannot be removed, and achieves small footprint, simple process flow, reduced investment and The effect of running costs
Inactive Publication Date: 2009-07-08
SOUTHEAST UNIV
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Problems solved by technology
[0007] Technical problem: The purpose of this invention is to provide a method for removing inhalable particulate matter from coal-fired coal, which can effectively control the discharge of inhalable particulate matter from coal-fired coal, reduce environmental pollution, eliminate harm to the human body, and solve the problem of traditional industrial dust removal. The problem that the device is basically unable to remove inhalable particulate matter from coal combustion
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Embodiment Construction
[0019] The present invention is described below in conjunction with accompanying drawing:
[0020] figure 1 It is the process flow of the present invention, before the dust-laden flue gas produced by coal combustion enters the high-gradient magnetic field magnetic seed gathering and trapping device, the ferromagnetic particles with soft magnetic properties are aerosolized by a fluidized bed aerosol generating device Into the flue gas, fully mixed and then enter the high gradient magnetic field magnetic seed coalescing device. Under the action of a high gradient magnetic field, the magnetic seed particles and fly ash particles collide and coalesce, the particle size grows, and are finally captured by the magnetic medium. The flue gas from the removal of particulate matter is directly evacuated. During the collection of particulate matter, the intermittent electromagnetic vibration method is used to vibrate the particulate matter adsorbed on the surface of the magnetic medium ...
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The method for removing inhalable particulate matter from coal combustion solves the huge harm to the atmospheric environment and human body caused by the existing inhalable particulate matter from coal combustion. In the method, a fluidized bed aerosol generator is used to aerosolize magnetic seeds with soft magnetic properties, and add them to coal-fired dust-laden flue gas. The dusty flue gas with added magnetic seeds is introduced into the high-gradient magnetic seed aggregation and collection device, and the fly ash inhalable particles and the magnetic seed particles collide and coalesce under the action of a high-gradient magnetic field, and are captured by the magnetic medium after the aggregation grows up. , adsorbed on the surface of the magnetic medium. The purified flue gas is directly evacuated. During the operation, the particles adsorbed on the surface of the magnetic medium gradually increase, and the particles are shaken off by intermittent electromagnetic rapping. Magnetic separation is used to separate the magnetic seed particles from the fly ash particles in the shaken particles, the magnetic seed particles are recovered and recycled, and the fly ash particles are discharged into the ash bin. The method has the characteristics of high efficiency, energy saving, small area occupied by facilities, low investment and processing costs, and the like.
Description
technical field [0001] The invention relates to a process for removing inhalable particulate matter from burning coal, and belongs to the technical field of environmental pollution prevention and clean coal combustion. Background technique [0002] Atmospheric inhalable particulate matter has become a prominent problem of atmospheric environmental pollution, and it has increasingly attracted great attention from all countries in the world. It has been recognized that atmospheric inhalable particulate matter is a serious hazard to human health, SO in the atmosphere 2 , NO x The content of pollutants such as CO and CO is not closely related to human mortality, while inhalable particulate matter has become the main reason for the increase in human mortality. At the same time, atmospheric particulate matter is also an important factor that causes major problems such as reduced atmospheric visibility, acid rain, global climate change, smog events, and ozone layer destruction. ...
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IPC IPC(8): B03C1/01
Inventor 赵长遂李永旺鲁端峰吴新
Owner SOUTHEAST UNIV