SOFTWARE FOR ACS OF MANAGEMENT THE AUTOMATED PROCESS CONTROL SYSTEM INFRASONIC GAS TREATMENT
D.Serikbayev East Kazakhstan State Technical University, Ust-Kamenogorsk, Kazakhstan
Blinaeva, E.V., (2013) Software for acs of management the automated process control system infrasonic gas treatment, Modern Science: Researches, Ideas, Results, Technologies, Iss. #0(TTPT), PP. 75 - 81.
boiler; infrasound; gas cleaning; flue gases
This paper describes a method for reducing air pollution and improving fuel efficiency in existing boilers with automation, functional scheme proposed automated process control subsonic gas treatment, presented a project to support the software and describes the ACS scheme dialogue process subsonic gas treatment of flue gases.
Currently, the share of thermal power accounts for 42% of total emissions of air pollutants from stationary sources. Emissions of fly ash are limited in world practice sulfur and nitrogen oxides, as well as emissions of carbon monoxide, unburnt characterize the appearance of the chemical in the flue gases and efficiency power station.
Traditional technology of pulverized (chamber) of burning coal is the dominant power in the Republic of Kazakhstan, and it is important to improve the efficiency and "environmental friendliness" of the technology. It is necessary to optimize the supply of oxygen (air) directly into the boiler furnace by this automation equipment. But the main focus should be on dust cleaning the flue gases are already outside the boiler.
At present, the further improvement of dust – gas catching only possible when using non-traditional physical effects. It may be coarse coagulation method include fine dust particles by means of sound waves to improve the efficiency of dust collectors.
It is used the property of the dust to coagulate into a powerful sound field the acoustic action. As a result of the sound wave it is amplified vibration environment with dust particles and increases the likelihood of a collision occurring and thus their mutual coupling. Aggregated particles having a large mass is not involved in the movement under the action of sound waves and deposited under the influence of gravitational forces.
A major role in the deposition of dust in the sound field belongs to the frequency of the wave There is an optimum value of the oscillation frequency - kHz and the frequency is higher for fine dust for each type of dust if this dispersion. Particles of small size, spherical shape, heavily sleepy intensely coagulate, at higher concentrations of the air.
You can increase the flue gas boiler installations through the use of acoustic techniques. The acoustic method of cleaning gas is not able to replace the existing ones, especially since it generally can not be used in isolation. It only allows you to enlarge the particles, but do not catch them. Positive of the acoustic method is it can be deposited very fine particles, which can be done in other ways. It also allows you to work with hot and corrosive gases.
Experimental tests have been carried out the impact of low frequency sound waves in the dust and gas flow in order to reduce the concentration of harmful substances.
It was concluded that the following reduction of emissions to the atmosphere during use of the device IFS-1 based on the experimental data:
sulfur dioxide of 20%;
nitrogen oxides in terms of nitrogen dioxide and 13%;
carbon monoxide by 39%;
ash coal by 12%.
Than it have been developed functional and structural schemes and algorithmic support of automated process control system subsonic gas treatment.
Blinaeva, E.V., Blinaeva, J.V. (2003), Sposob obrabotki pylegazovoy smesi vneshnim infrazvukovym vozdeystviem [A method of dust-gas mixture processing by an external infrasonic influence], Patent of the Republic of Kazakhstan № 42586.
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