New Page 9

Free Web Hosting Provider - Web Hosting - E-commerce - High Speed Internet - Free Web Page

(This project won the gold at national science fair and now recieves a scholarship too)

The project dynamic smoke purifier and chemical synthesizer (DSPCS) is an economical and efficient way to purify smoke and to synthesize valuable lab essence out of it. The above said project in itself is a result of vigorous experimentation and implementation of the simple laws of physics and chemistry. The DSPCS has many applications in the real world. It can be used in power plants, cement plants, incinerators, and anywhere where the generation of smoke takes place.

As we know that pollution is a mainly due to smoke caused by the industries and automobiles. There are many instruments available in the market to purify smoke for example Electrostatic precipitators and wet scrubbers The main problem with these precipitators is that they consume a lot of power and use the concept of static electric field whereas in DSPCS negligible amount of power is consumedand the concept of oscillating electric field is used which is more efficient than the conventional method.

The main concern of today’s world is energy and pollution so if we can control pollution with the minimal usage of energy we can achieve our optimum goal.

This project in itself is a revelation and has won many credits till date. Its high efficiency and low power usage makes it unparalleled in its field. This project makes the optimum use of energy given to it. The simple circuitry used and the simple design makes the maintenance costs reduced to zero (nearly).

The basic design of the circuit is very simple. There is a cyclone in which the smoke first enters and then by the action of the specially designed fan the smoke enters the region in which the oscillating electric field is being setup by the use of a oscillator circuit. The oscillator circuit is self designed and resembles very nearly with the one used in a radio. The smoke gets purified of the soot particles here and the carbon dioxide and the other gases remain left. These gases are taken to a specially designed glass chamber where we have put ethyl grignard. Here the CO₂ and the other gases react with it and get converted into respective acids, for example CO₂to CH₃COOH (acetic acid). The result is a clean air (smoke) which comes out of a outlet provided on the rear of the DSPCS.

This specially designed motor is used to drive the fan that creates enough low-pressure to suck the smoke into the cyclone.

This specially designed fan is designed in accordance with the airflow. The fan is so designed that it sucks in and sucks out the air at right angles with each other. This is very essential because it then becomes compatible with the motor and delivers optimum power.

The circuit diagram for the project consists of two parts. Ist one is to provide the oscillating electric field. This is a simple circuit derived from the oscillator in the transistor radio. The output current is amplified and then transferred to the capacitor plates and in between there are variable resistors, which can be adjusted according to the need of the precipitator.

35*10 mm. These are fitted in the form of 10 rows and 10 columns .It should be noted that all the rows do not have the same voltage. The voltages to various plates are controlled by the variable resistors provided at the input as mentioned above.

A special fan is required in this project, which sucks out and sucks in the smoke at right angles with each other. To find out such a special design following setup was made.

Fan blades were attached to a 20 watt motor. The blades were then twisted to known angle and the deflection the sound meter was measured and noted. This iteration was done many times for different angles and a curve was drawn between the angle of blade and deflection observed in the sound meter. The peak value of the curve is the optimum angle at which the maximum air is sucked out at right angles. Thus the optimum value of the angle was measured.

The results mentioned are highly encouraging. As we can see that the electricity consumption is far more less and the cost of operating the machine is far cheaper than the available precipitators. The litmus test and NAHCO3 test also confirms the presence of acid in the resultant chemical reagent that was obtained by passing smoke through the Grignard reagent. The smoke analysis also clearly shows the absence of the toxic gases. This shows the efficiency of DCPCS.

THUS DYNAMIC SMOKE PURIFIER AND CHEMICAL SYNTHESISER PURIFIES SMOKE MORE EFFICIENTLY AND ECONOMICALLY.