Flue gas purification plant with electric fields combined with super-gravity fields

A technology for flue gas purification and supergravity field, which is applied to combined devices, gas treatment, chemical instruments and methods, etc., and can solve the problems of low dust removal efficiency, high energy consumption, and large device footprint of fine particles. The effect of small land area, low cost and low operation

Active Publication Date: 2017-09-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The device strengthens the application of supergravity technology in flue gas purification. Specifically, it effectively solves the problems of low concentration and fine particle dust in the electrostatic precipitator process, as well as the large area of ​​the device and hi

Method used

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  • Flue gas purification plant with electric fields combined with super-gravity fields

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Effect test

Embodiment 1

[0051] A supergravity-electric field combined flue gas purification device, its composition diagram is as follows figure 1 shown. The device includes a dust generating system 1, a fan 2, a sulfur dioxide gas source 3, a nitrogen monoxide gas source 5, a gas buffer tank 7, a high-voltage power supply 9, an electric field device 10, a supergravity purification system 11, a solution circulation tank 15, and a centrifugal pump 16; The gas outlet of the dust generation system 1 is connected to the gas inlet of the fan 2; the gas outlet of the fan 2 is connected to the inlet of the gas buffer tank 7; After measuring 6, it is connected with the gas buffer tank 7 inlet; after the gas buffer tank 7 outlet passes through the third gas flow meter 8, it is connected with the gas inlet of the electric field device 10; the gas outlet of the electric field device 10 is connected with the gas inlet of the supergravity purification system 11; The gas purified by supergravity passes through th...

Embodiment 2

[0073] Applying the system device of the present invention to carry out the technological parameters of simulated flue gas purification is set as: gas volume 10Nm 3 / h, the liquid volume is 40L / h, adjust the dust generator so that the PM2.5 concentration in the dust is 5.26mg / m 3 , PM10 concentration is 38.6mg / m 3 , the total dust concentration is 67.9mg / m 3 . The high-voltage power supply is adjusted to 40kV, the mass fraction of sodium sulfite is 1.55%, the temperature of the supergravity machine is normal temperature, the pressure is 1.36MPa, and the level of the supergravity dust removal equipment is 800g. The gas containing dust is passed into the electric field device 10 by the fan 2, and then the charged gas is passed into the supergravity machine 11, and the concentration of different particle sizes of the dust at the outlet is detected, and the removal rate of PM2.5 is 96.8 %, the PM10 removal rate is 99.4%, and the total dust removal rate is 99.6%.

Embodiment 3

[0075] Applying the system device of the present invention to carry out the technological parameters of simulated flue gas purification is set as: gas volume 10Nm 3 / h, the liquid volume is 40L / h, adjust the dust generator so that the PM2.5 concentration in the dust is 6.26mg / m 3 , PM10 concentration is 35.6mg / m 3 , the total dust concentration is 73.9mg / m 3 . The high-voltage power supply is adjusted to 40kV, the temperature of the supergravity machine is normal temperature, the pressure is 1.31MPa, and the level of the supergravity dust removal equipment is 800g. The gas containing dust is passed into the electric field device 10 by the fan 2, and then the charged gas is passed into the supergravity machine 11, and the dust concentration of different particle sizes at the outlet is detected, and the removal rate of PM2.5 is 96.9%. , PM10 removal rate is 99.2%, total dust removal rate is 99.4%.

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Abstract

The invention discloses a flue gas purification plant with electric fields combined with super-gravity fields. The flue gas purification plant comprises a dust generating system 1, a fan 2, a sulfur dioxide gas source 3, a nitric oxide gas source 5, a gas buffer tank 7, a high-voltage power source 9, an electric field device 10, a super-gravity purification system 11, a solution circulating tank 15 and a centrifugal pump 16. Simulated dust generated by the dust generating system, sulfur dioxide and nitric oxide gas are mixed with one another to obtain mixtures, then dust is charged by the aid of the electric field device, the mixtures are primarily purified, the sulfur dioxide and nitric oxide are partially oxidized, then gas flows into the super-gravity purification system, deep dust removal, desulfurization and denitration are further carried out, and ultimately purified gas can be exhausted from a gas outlet of a super-gravity machine. The flue gas purification plant has the advantages that low-concentration dust gas can be treated by the flue gas purification plant, the flue gas purification plant is high in desulfurization and denitration efficiency and low in operation cost, a novel effective scheme can be provided for purifying flue gas, and the like.

Description

technical field [0001] The invention relates to the environmental protection field of flue gas purification. More specifically, it relates to a supergravity field combined electric field dedusting and mass transfer technology. Background technique [0002] With the rapid development of my country's economy, the process of urbanization and industrialization is accelerating, and the emission of air pollutants has increased sharply. Today, our country also has the problem of atmospheric environmental pollution that has occurred in many developed countries for hundreds of years. At present, the purification technology of boiler flue gas has attracted more and more people's attention, and now for SO 2 The removal technology of harmful gases such as nitric oxide and nitric oxide has been relatively mature and widely used. However, in recent years, many cities in my country have successively experienced different degrees of smog weather, which is becoming a major environmental pr...

Claims

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Application Information

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IPC IPC(8): B01D50/00B01D53/78B01D53/60
CPCB01D50/00B01D53/323B01D53/60B01D53/78B01D2257/404B01D2258/0283B01D2259/818
Inventor 孙宝昌张强初广文邹海魁陈建峰
Owner BEIJING UNIV OF CHEM TECH
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