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Research and industrial application of Coulomb electrostatic precipitator

Jin Lieshui

Zhuji Environtal Protection Instituge��Zhuji Kulun Environmental Technology Co.,ltd.

Abstract Coulomb electrostatic precipitators inventions from the lab into the industrial application, has made solid progress, preliminary reveals the potential energy of the coulomb's law, more than one hundred years in academia for a long time to explore the efficiency of the electric, but has been limited in the law of the formula on the upper portion of the study of the molecules -, but rarely in the lower part of the law of formula, the development of the denominator, seriously affects the whole electric precipitation throughout the year Technological breakthroughs, is difficult to make the effect can reach below 80 or 50 mg/m3, but under only take a deep, rely on electrical change bags or bag combination to make up for the inadequacy of the electric, thus increasing the peak of China's environmental protection industry association, vice President of calls for "green innovation is imminent," we've heard a lot of environmental protection departments have flagrantly under the instruction of the enterprise "are not allowed to install the electric only allowed a bag !" Make our electric dust workers bow their heads three feet, and electric dust is the boss of environmental protection industry, the main force, and now the invention of Coulomb electric dust collector, especially the industrial application of the confirmation, so that we can hold our heads high!

1.coulomb electric dust removal and "Environmental Protection Innovation is imminent"

Coulomb electric dust removal technology, first of all from the theoretical exploration and research, because of the basic theory of electrostatic

Coulomb's law: ��.png

Academic, business, both at home and abroad in one hundred to fallow in electrical dust catcher equipment, research to improve the electric field, plate, and the polar geometric shape and size of the change, and improve the power supply characteristics above all is in order to enhance formula molecules in q1 and q2 two power, has paid a huge price, failed to solve the basic problem. The author is engaged in the cause of electric dust removal for more than 30 years, cultivated to the various corners of the structure of the electric dust collector, for how to increase q1. Q2 electricity, various experiments. In addition, I also read more than 30 years of newspaper articles and academic papers, learning from my peers. And the national electric dust science and technology workers are more devoted to exploring its efficiency. However, the study of denominator R2 below the formula of Coulomb's law is insufficient in both quantity and depth, that is, the distance r between two electrostatic factors is almost not involved. The numerator Q1 �� Q2 in the author's law formula is only the order of magnitude of product, while the denominator R2 is the order of magnitude of square. It can be seen that a slight change in the distance R between Q1Q2 and Q1Q2 will greatly affect the size of the entire Coulomb force F, which is far greater than the change in the energy of q1 and Q2. Now set the distance r=200 between charged dust Q1 and positive plate Q2,

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Therefore, we cannot increase the force F of r=> the whole electrostatic field by 40,000 times in theory, which shows how huge the potential energy of Coulomb's law is! It can be predicted that if coulomb electric dust removal theory can be applied to the structure of electrostatic precipitator, electric dust removal will bring a revolutionary change, so we put this mechanism in the laboratory to experiment, in an attempt to achieve in the electric field structure of two electric quantity Q1 and Q2 distance as close to 0. After years test finally got ideal results, therefore we have designed a circulation area of 5 m2, electric field is 3.5 m of the electric dust catcher, using the large sintering machine difficult than higher resistance, dust dust and lime kiln dust as a source of dust, when the inlet concentration of 37 g/m3 under the condition of average flow velocity of 1 m/s, exports reached 3.8 m The efficiency of g/m3 was calculated as ��=99.99%. After the success, in the 12th October 2007 Chinese electric academic conference, we published entitled "theory" at the beginning of the coulomb electrostatic precipitators, and only from the theory to the lab information, communicate to domestic HuanBaoJie, caused the academic reflection, in particular, some enterprises, has felt a lot of pressure in the electric market, urgent need to the effect of existing electric dust collector Rate up, but suffer from no advanced technological breakthroughs, can only resort to cloth bags. We hope that we can put into industrial application as soon as possible, but some top peer experts warned us that "the laboratory is a laboratory, some things are good in the laboratory, but when it comes to industrial application, they are not ideal." These two opinions are very sincere, but on the platform of the academic association, a gentleman from the northeast laughed at us and said, "After hundreds of tests have failed, if your Coulomb electric dust can succeed, it is' fantasy '!" Another entrepreneur asked me on the spot, "What do you think of his words?" I was naive and generous to know physics with gas! I replied, "He's right! Because he only tried a hundred times and failed, while we succeeded on one hundred and one! A hundred schools of thought contend, and laughing is also motivation!" Of course, on the one hand, we are very heavy in our heart, with the pressure of entrepreneurs' expectations, the pressure of experts who advise us, and the pressure from different perspectives, but on the other hand, we are more determined, "If we do not do well in Coulomb electric dust, we will not close our eyes in death!" We went on with our research without sleep and sweat, for we had sunk into the depths of Coulomb's theory and had seen the promise of electrostatic precipitators! As we in the construction of industrial application, and in October 2008, the 11th international academic conference we published a paper again, to tell the world counterparts, we Chinese environmental scholars invented the coulomb electric patent, and before that, we have already applied for HuanBaoJie one of the few environmental protection and technology of China international patent for invention, the coulomb electric technology is our own For intellectual property, we have applied for international invention patent (Application No. PCT/CN2006/0020100), focusing on the countries with advanced electric dust collection technology in the world, such as invention patent in the United States (Application No. 11/990.1800), invention patent in the European Union (Application No. 06775328.50), especially in Britain and Germany , France, Sweden and other countries, and has been confirmed by the Chinese Intellectual Property Office by the international invention search: Coulomb electric dust invention patent, whether novelty, creativity, industrial practicality, is the world's first 20 years.

The above discussion only shows our response to the call of "environmental innovation is urgent".

2. Industrial application of Coulomb electric dust removal

In order to prove the actual effect of coulomb electric dust removal, we have implemented industrial application in many points and many working conditions. Because of the theoretical basis and the experimental basis of the laboratory, we have selected the dust concentration is high (56g/m3), the specific resistance is high (above 1011 ��.cm), the dust ultra-fine viscosity is difficult to remove ash, the smoke temperature is high (300��), the negative pressure is large (15000P) A), and other projects with high starting point and high difficulty in dust removal have been implemented for industrial application. The specifications of the electrostatic precipitator have been implemented: 80m2, 120m2, 175m2, 225m2, 260m2 and so on. There are flue gas from thermal power plants, lime kiln dust, sintering machine head and tail of iron and steel plants, and soot from cement plants. Several industrial applications of Coulomb electric dust removal show that no dust can be seen with only one electric field chimney, which proves the excellent performance of Coulomb electric dust removal (see test report for details). We also carried out the combination of different operation conditions, such as three electric fields open at the same time, only one electric field open, two electric fields open, one three-phase open and one single-phase plus one three-phase open comparison test, no matter how the combination of chimney smoke.

2.1 Selection design and renovation of coulomb esp

Coulomb's design in the selection of the electric current of short duration according to the conventional way of the electric parameters are selected, one is for the sake of caution, second is comparable, after the mature, in the future will completely according to the requirement of the coulomb electric precipitation mechanism to design, type selection for the future to rapidly expand the application, we typically on the overall design of the original no big change to move, electrostatic precipitators still shell is designed according to the conventional electric precipitation patterns The design of coulomb electric field can meet the requirements of coulomb electric dust theory. Coulomb electrostatic precipitators, of course, a start-up, for its various parameters needs further research and improvement of all aspects of it have become important hot topic in the field of the next generation of the electric, theoretical exploration of the space is larger, with coulomb electric technology to reforming the old substandard electric precipitator, how fast is good province immediately, as long as to transform the original electric field into the coulomb field can amount to mark, don't Need to use electricity to change bags, electric bag combined with the scheme, trouble, cost money, laborious, time-consuming, how huge the market.

2.2 Coulomb electric dust removal and drive speed

For more than one hundred years, the driving speed has been the main parameter guiding the selection of electrostatic precipitator. It is affected by many factors, but some factors are fuzzy and uncertain, so it is blurred in recent years. And contrast the coulomb electrostatic precipitators, drive into the speed of the original concept, already is not applicable, because the conventional electric field, the charged particle in the electric drive into, is parallel to the anode and cathode and straight forward, it mainly by two: one is the coulomb force, the other one is wind, the coulomb force to dust particles into the plate, while the wind pulling away dust electric outside, two force each other 90 degrees, the wind is a large component, to drive into the speed is the most harmful, but now the coulomb field, the wind has ceased to exist, dust particles by coulomb force headed for anode plate, the electric field force applied to dust particles in full without any loss, and the wind instead turn 90 degrees, and the coulomb force direction vector superposition become together, if not coulomb force, Wind force will also push dust particles to the anode plate, so the concept of drive speed can not be explained in coulomb electric dust removal, so a new mathematical model is needed to guide the selection of coulomb electric dust removal.

2.3 The Deutsch formula can no longer be used for coulomb electric dust collection selection

Because the dedusting efficiency ��=1-e-��f has been shown to lose its guiding significance, and the specific dust collection area F =, where Q is the smoke volume and A is the dust collection area, it can be seen that the dust collection area of the Coulomb electric field can be three electric fields on top of one electric field. Then such a mental note of izzy and formula of dust required area cannot match, this guide according to the formula of efficiency of eta cannot explain again, so you need to stay the coulomb mass after use, the electric a regular data, further to establish a general mathematical model selection, subject to the cooperation of academia, electric field, this paper, the current can only estimate chooses with experience.

2.4 Power configuration and energy consumption of coulomb electric dust removal

Obviously due to the superposition of wind and coulomb force, coulomb field work together on the dust particles, can be simulated, the export of fan electrostatic precipitators, its part of kinetic energy (wind) additional on the dust particles or help the electric field force, relatively speaking, the coulomb field can be much smaller than the conventional electric field voltage and current (electric power), but can get larger effect, the actual running also reflects this For example, A Coulomb electrostatic precipitator has A dust collecting area of 2080m2 for an electric field and A capacity of 1.1a for A high-voltage power supply. Only one electric field is opened for the whole machine: the primary voltage is 210V, the primary current is 50A, the secondary voltage is 50KV and the secondary current is 456mA. The chimney can not see smoke and dust, which is almost half of the power of the conventional electric field. So coulomb electric energy saving effect is very obvious, as for the coulomb force F is the electricity "force" in electrostatics, and formed by wind is a fluid "force", composition of the two forces how to use a mathematical formula, also we are exploring, coulomb, the electric field is a new type of electric field on many ideas and there are differences between the conventional electric precipitation, what with the form of high voltage power supply most Matching, also need to be compared with large-scale application will be known,

2.5 Influence of coulomb electric dust removal on contrast resistance

The specific resistance of dust particles is high or low is only relatively speaking, the nature of the object is absolutely not charged or not polar, and temperature, humidity, electrical characteristics and the nature of the smoke medium, but the conventional electric field in these objective factors on the specific resistance of dust particles and polarity is very important. In coulomb field, however, the dust particles no matter than resistance is high or low, as long as can charge up a battery will capture by the anode, and even some not charged dust particles, mix in them, will be charged dust particles collision adhesion, because all dust must go through the coulomb anode plate this gate, form filed phenomenon, even together will touch to the anode plate, because of it They are no longer constrained by the wind, they can only be attached to the plate, so the Coulomb field is not sensitive to the level of the resistance. It's also one of the most efficient aspects of coulomb electric field. For certain conditions of high resistance dust layer, will produce the corona on the surface of the anode plate of traditional concept, was broken by the natural structure of the coulomb plate, partly because the coulomb plate was method to the ash removal and the effect is very good, second is coulomb matchs on the macroscopic discharge point surface, but local microscopic is points on the edges or discharge to the line, so can still be normal discharge, broke the formation of the electricity Halo environment.

2.6 Coulomb electric dust removal overcomes secondary flying

Due to get the second dust is the common fault of the electric dust catcher, also is one of the main reasons for electrical precipitator can not meet, bothering to standard of the electric control problem for a long time, in the past only increase the number of electric field to reduce the secondary dust, but most electric field can't solve the problem, because even decorate the seven electric field, to the end of an electric field still exists secondary fly field problem, And the coulomb electric precipitation is effectively overcome this problem, because the coulomb electric field in the channel, and the anode GaLong flue gas velocity, has reduced to 0-0.2 m/s or so, it is lower than natural sedimentation velocity and dust, we passed the detailed measurement proved repeatedly, in coulomb field structure and process produced in such an environment, so it is almost to shaking "Off-line dust removal". Moreover, even in the dust falling, it is impossible to reverse back to the inlet channel, also have set up the electric field, and the exhaust channel itself in discharge, containing dust, so the coulomb field can effectively overcome the secondary dust, it is an important technology of the coulomb electric precipitation, which significantly improves the electric control standards control ability, practical industrial application, prove the coulomb electric precipitation This important technical characteristics, the above will only be the coulomb electric dust industrial application and the related problems to make a preliminary discussion, preliminary revealed coulomb electric dust potential energy, and market prospects, we hope to give advice.

3. The development of basic technology of electric dust removal is imminent

With the rapid development of China's economic construction, the environmental protection industry is lagging behind and not synchronous enough. There are a lot of debts. The state has set environmental protection as a national policy. Although our quantity seems to be ok, but the quality is basically the same, and are some imitation of foreign products, in 2008 the 11th international Electric dust conference held in China, what do we take to show the world? Now has to be out of the electrostatic precipitators, only the power to change bag or pouch combination will be marginalized electrostatic precipitators, moreover some environmental protection department is indiscriminate, all instructions are not allowed to be on the electric enterprises, only allowed on the bag, but like the electric enterprise inner but don't use a bag, because from the global analysis, national policy is to enterprise energy conservation and emissions reduction, but the bag is energy saving and emission reduction is not resistance High consumption and downtime for bag replacement affect the output, bag replacement repair cost is high, and the electric dust is both energy saving and emission reduction, but in recent years the emission standard has been improved, the previous electrostatic precipitator can reach 100mg/m3 is not difficult, but it is difficult to reach 50mg/m3, and the bag can be controlled in 50 or even 30mg/m3 below, The final gatekeeper is not as good as the sack, just a little bit. Bag dust is actually by increasing the filter area to reduce the flow rate, and expand the investment to import expensive filter material for the cost, for example, we found in an enterprise, in a normal operation of eight years of electrostatic precipitator outer wall, nail a bag dust collector name brand, I asked the factory director whether workers nail wrong? The factory director said deeply, "This electric dust collector has been running very well, but in order to deceive the environmental protection department, they see this cloth bag name tag, think this electric dust collector is the cloth bag dust collector, anyway the chimney does not smoke, what is inside they do not know!" Bitter also!

Then, the author thirty years have seen a variety of electrical dust catcher, not the electric form of this product is not good, but there is indeed a lot of specific equipment is "rough" abuse ", "especially in the north some areas, some manufacturers, not professional design team, drawings to buy a casually, irresponsible for technology, making no decent workshop, is a lot of field production , no quality control, not up to the drawing accuracy requirements, especially the production of Yin and Yang pole inner parts, no tooling, how to achieve quality? In tire has a problem, and the quality of the electric dust is 7 minutes of installation, but it was piling up his building blocks, as long as it is iron with welding steel pieces go up, more "bad", make written only by the administrative departments of environmental protection product certification, without effective supervision inspection of the first line equipment, the practical operation of electrostatic precipitator, it is no wonder that the electric's reputation is not good, the owner can only choose cheaper won the bid. So we call here: we want to do a good job in their own please top electric experts, national regional electric dust catcher, hand in hand to study the basic theory, make the electric discharge stable lasting up to 50 mg/m3, and coulomb electric technology preliminary reveals the electrostatic potential energy, just the topic to a lifesaver.