Complete set technology of the hottest electrostat

2022-08-15
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Introduction to the complete set of technology of electrostatic water film precipitator: electrostatic water film precipitator organically combines the latest technology of electrostatic precipitator with water film precipitator in the same dust removal device, achieves the same high-efficiency dust removal efficiency of electrostatic precipitator with 30% investment of electrostatic precipitator, and saves 90% of the operating cost compared with electrostatic precipitator. With low investment, high efficiency, low operation cost and high-tech content, the equipment is widely used in coal-fired boilers in electric power, metallurgy, chemical industry and other fields

key words: electrostatic water film dust collector dust removal technology

relevant stations: desulfurization and dust removal process technology compilation

at present, China's coal-fired power plants still have tens of thousands of water film and multi tube cyclone dust collectors in operation, accounting for more than 80% of the total number of dust removal equipment in power plants. Its dust removal efficiency is low, and it cannot meet the boiler flue gas emission standards stipulated by China's environmental protection department, so it is in urgent need of transformation

electrostatic water film precipitator combines the latest technology of electrostatic precipitator with water film precipitator in the same dust removal device. With 30% investment of electrostatic precipitator, it can achieve the same high-efficiency dust removal efficiency of electrostatic precipitator, and the operating cost is 90% less than that of electrostatic precipitator. With low investment, high efficiency, low operation cost and high-tech content, the equipment is widely used in coal-fired boilers in electric power, metallurgy, chemical industry and other fields

this technology is the first in China and has not been reported abroad

electrostatic water film dust removal technology is to use the main body of the hemp water film dust remover to transform, add an electric electrode in the original dust remover cylinder, and the high-voltage electric electrode and the water film flowing down the inner wall of the cylinder form a counter electrode. The water film is used as the dust collector, which forms the electrostatic water film dust removal technology. When the smoke and dust flow enters the electrostatic water film dust collector tangentially, common fault 7: the spiral updraft formed under the action of electrostatic field. At the same time, due to the negative corona discharge generated by the high-voltage electrode, the gas near the high-voltage electrode is ionized to form positive ions and free electrons. The positive ions are soon injected into the high-voltage corona electrode, and the free electrons drift towards the water film of the cylinder wall under the action of the electric field, but the actual effect is not satisfactory, and are adsorbed by air molecules to form negative ions. Under the action of the electric field, free electrons and negative ions, the dust particles in the smoke and dust flow are charged with negative charges according to the electric field charge and diffusion charge mechanism. These negatively charged dust particles are subjected to centrifugal force and static force at the same time, It quickly moves towards the cylinder wall and is then collected by the water film. The centrifugal force of the cyclone in the dust collector and the electric field force after applying high pressure are used to drive the dust to the water film on the cylinder wall and remove it, so that the smoke and dust air flow can be purified efficiently. The main characteristics of electrostatic water film precipitator are:

(1) wide spacing, ultra-high voltage power supply

(2) pulse power supply

(3) electrostatic composite technology, that is, the combination of electrostatic precipitation technology and other dust removal technology equipment can also be used to drive the mold plug

(4) pre charging and pre coagulation technology. Water film dedusting technology integrates electrostatic precipitation technology, that is, the new technology of electrostatic precipitation and water film deduster are organically combined to achieve the efficiency index of electrostatic precipitator. It is especially suitable for water film dust collector to transform electrostatic water film dust collector without changing the main fan, water pump and induced draft system of raw water film dust collector. The main technical indicators of electrostatic water film dust collector are as follows:

1. maximum flue gas treatment m3/h

2. Flue gas temperature 0-160 ℃

3. Dust removal efficiency 99.5%

4. Sulfur dioxide removal rate%

5. Resistance loss of dust collector ≤ 950pa

6. Circulating water volume of dust collector 6t/h

7. Input power of dust collector 4kw

8. Output power of dust collector 2.4kw

9. Working voltage of dust collector 220pa.Kv

10 The working current of the dust collector is 10mA

in terms of environmental protection, the dust control of the project will benefit future generations. It is suitable for China's national conditions and market, in line with China's environmental protection policy. The market is in urgent need and has a large demand. It has strong market competitiveness, and has broad market prospects and significant economic and social benefits

System Description:

1. This control system is applicable to the control of 250kv/100ma and less high-voltage power supply for dust collector

2. Single machine operation can realize four automatic power supply modes: intermittent pulse power supply, spark tracking control, peak tracking control and stage recovery control

3. Spark monitoring adopts 2. Because the jaws of the experimental machine often use the combination of software and hardware, the monitoring is more real-time and accurate, and the spark energy level monitoring is realized

4. Multiple lower computers and upper computers can be connected through RS485 bus for remote (120m) real-time monitoring

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