Device for interactive reaction between heavy metals and particulate matter and reaction method

A technology for heavy metals and particulate matter, applied in chemical instruments and methods, gas treatment, membrane technology, etc., can solve problems such as lack of in-depth knowledge and understanding, and achieve the effects of convenient control, improved results, and prolonged residence time

Inactive Publication Date: 2017-03-29
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Including the existing devices for removing fine particles, they are all based on the removal of fine particles and heavy metals as the main purpose, lacking a deep understanding and understanding of the nature of the reaction of heavy metals on the surface of fine particles at the molecular level, such as the study of P, Cl and various The interaction law of heavy metal migration and transformation; reveal the competition mechanism of alkali metal and heavy metal migration and transformation, etc.; and then establish a variety of heavy metals and fine particles collaborative control optimization method for a variety of thermochemical treatment processes

Method used

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  • Device for interactive reaction between heavy metals and particulate matter and reaction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Implementation example 1: The furnace temperature of three different temperature sections is uniformly set to 400°C, the gas flow rate of the flue gas in the flue gas mixing system is set to 3.14L / min, and only the heavy metal atmosphere is introduced, respectively in the three furnace sections Put in the powdered activated carbon contained in the corundum ark, and after ten minutes, take out the activated carbon in the three furnace sections, and separate them in a sampling port, and use the activated carbon to adsorb heavy metals for the same period of time, and then analyze the content of heavy metals.

[0026] It was found that the content of heavy metals in activated carbon is almost the same, such as Cu, the contents of Cu in the three samples are 30.08mg / Kg, 30.06mg / Kg, and 30.12mg / Kg respectively, so it is determined that the heavy metal atmosphere in the furnace is uniform of. And in the same sampling port, the Cu content of activated carbon in different time p...

Embodiment 2

[0027] Implementation Example 2: The furnace temperature of the three different temperature sections is uniformly set to 400°C, the gas flow rate of the flue gas in the flue gas mixing system is set to 3.14L / min, and only fine particles are fed through the screw feeder, respectively. At the time of 10min and 20min, the same time sampling was carried out at the three sampling ports.

[0028] It was found that the masses of the collected fine particles at 10 minutes were: 21.22mg, 21.23mg, 21.19mg. The masses at 20 minutes are: 21.31mg, 21.26mg, 21.23mg. The results show that the fine particles are stable and uniform in the furnace.

Embodiment 3

[0029] Implementation example 3: The furnace temperature of three different temperature sections is uniformly set to 400°C, and the atmosphere flow rate of the flue gas in the flue gas mixing system is set to 3.14L / min, and the heavy metal atmosphere and fine particles are respectively introduced through the flue The sampler takes samples at the sampling ports of the three furnace sections respectively, and detects the heavy metal content of the same amount of samples taken.

[0030] It was found that the content of heavy metals in samples with the same content is almost the same, such as Cu, the content of Cu in the three sampling ports is 20.30mg / Kg, 20.28mg / Kg, and 20.30mg / Kg respectively.

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Abstract

The invention discloses a device for interactive reaction between heavy metals and particulate matter and belongs to the field of interactive reaction devices. The device comprises a flue gas mixing system, a temperature control hearth and a tail gas processing system, wherein a temperature control device is arranged in the temperature control hearth, an ejector, an atomizer and a sampling hole are respectively arranged outside of the temperature control hearth, the front end of the ejector is connected with one end of the flue gas mixing system and one end of the atomizer respectively, the other end of the atomizer is connected with a peristaltic pump, and the tail end of the temperature control hearth is connected with the tail gas processing system. The device can be used for researching a reaction mechanism of specific ingredients of particulate matter and heavy metals under different conditions in different concentrations of heavy metal atmospheres, and the peristaltic pump combines with an atomizer and double-by-path venturi ejector combined device, so that the particulate matter and the heavy metal atmospheres re evenly mixed, and control is convenient. In addition, feeding is performed from the cylindrical tangent plane of the hearth, so that mixing is violent, and the staying time of fine particulate matter and heavy metal flue gas in the hearth is also prolonged.

Description

technical field [0001] The invention relates to an interactive reaction device, in particular to a device and a reaction method for the interactive reaction of heavy metals and particulate matter. Background technique [0002] At present, the existing methods for hazardous heavy metals and fine particles are based on the adsorption of fine particles and heavy metals and how to remove fine particles as a whole. There is also a method for joint removal of fine particles and heavy metals by adding adsorbents. These The methods are all based on the removal of fine particles and dangerous heavy metals in the combustion process, which is the overall adsorption and removal of particles and heavy metals. Under specific experimental conditions, the best effect achieved by specific fine particle raw materials, such as CN102716635A, realizes the circulation of adsorbent activated carbon under the cyclone separator equipment, and then uses dry-wet combined electrostatic precipitator to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D49/00
CPCB01D53/02B01D49/00B01D2253/102B01D2257/60B01D2258/0283
Inventor 李润东崔若琦李彦龙杨天华
Owner SHENYANG AEROSPACE UNIVERSITY
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