DESCRIPTION

MICROWAVE AND PULSED UV LASER BASED METHOD OF PHOTO CHEMICAL REACTIONS IN CHEMICAL SYNTHESIS

FIELD OF THE INVENTION

The present invention relates to the system and method of photo chemical reactions in chemical synthesis. Particularly, present invention relates to the system and method of microwave and pulsed ultra violet (UV) laser based photo chemical reactions in chemical synthesis.

BACKGROUND OF THE INVENTION

The chemical reactors are vessels designed to contain chemical reactions. The design of a chemical reactor deals with multiple aspects of chemical engineering. The reactor are designed to maximize net present value for the given reaction and reaction proceeds with the highest efficiency towards the desired output product, producing the highest yield of product while requiring the least amount of money to purchase and operate. Normal operating expenses include energy input, energy removal, raw material costs, labor, etc. Energy changes can come in the form of heating or cooling, pumping to increase pressure, frictional pressure loss, agitation, etc. The reactor vessel has a cooling or heating jacket or cooling or heating coils (tubes) wrapped around the outside of its vessel wall to cool down or heat up the contents.

Reference may be made to the following:

US Patent No 4,311,570 relates to a wide variety of chemical processes using thin films of reactants are carried out on the surface of a body rotating at high speed and the products are readily isolated (for example as fine particles or fibers) by using centrifugal force to fling the products from the rim of the body. F „v n US Patent No 4849183 relates to a continuous photochemical reactor comprises a rotatable cylindrical reaction vessel provided at its one end with an inlet for reaction mixture and at the other end with an opening, a lid body for closing said opening of the reaction vessel and for discharging reaction products, a lamp mounted on the lid body and coaxially arranged in the reaction vessel, and a driving means for rotating the reaction vessel around its axis.

US Patent No 4,456,512 relates to the photochemical reactor and method in which photochemical reactions are carried out by passing the fluid to be irradiated through a plurality of capillaries, each of which is surrounded by an actinic-radiation emitting plasma; the capillaries being transparent to the radiation. Reference may be made to an article entitled "Miniaturized microreactors enable photochemistry with laser irradiation in flow mode to convert azidobiphenyl into carbazole with high efficiency" by ElkeBremus KQbberling, Arnold Gillner, Frank Avemaria, Celine Rethore and Stefan Brase, Beilstein J. Org. Chem. 8,1213-1218, 2012. The article talks about the reactors especially designed for the stimulation of photochemical reactions (UV-vis radiation) as well as for demanding reaction conditions, such as the rapid elevation of temperature (with pulsed IR-laser radiation) or pressure pulses (due to the evaporation of the solvent upon the introduction of energy.

In chemical industry, major reactions are involved with free radical and electrophilic substitution reactions. But presently available method of reaction mechanisms are not yielding higher yield. Creating natural photo chemical reaction environment not only in laboratory but in manufacturing conditions is a major task for organic chemist. Thus there is a need to provide a system and method for chemical reactor which provides higher yield in a cost effective manner. In order to overcome above listed prior art, the present invention provides a chemical reactor connected to mechanical advantage based low energy consuming pneumatically controlled compressed gas injection system to achieve higher yields.

SUMMARY OF THE INVENTION

Primary object of the present invention is to provide system and method of photo chemical reactions in chemical synthesis. Another object of the present invention is to provide a system and method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis. Yet another object of the present invention is to provide a chemical reactor which achieves higher yields. Still another object of the present invention is to provide a system and method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis which is cost effective. Another object of the present invention is to provide a method of microwave and pulsed UV laser based photo chemical reactions which eliminates the need of chemical catalyst. In this method of invention, the reactor comprises low energy consuming pneumatically controlled compressed gas injection system with thermo electric refrigeration device and circulation of chilled water in the jacket systems.

Accordingly a system and method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis is provided. A chemical reactor is constructed with ultra low energy consuming servo motors and pneumatically controlled agitation systems. The reactor is connected low energy consuming pneumatically controlled compressed gas injection system provided with thermo electric refrigeration device and circulation of chilled water in the jacket systems. In a preferred embodiment of the present invention, multiple sensors such as without limitation level, pH, temperature, pressure, humidity or any other such kind are provided within the reactor. These sensors are attached to intelligent control system.

In another embodiment of the present invention, photo chemical reactions such as but not limited to the alkylation, acetylation and other type of free radical substitution reactions that are used in bulk drugs and other chemical synthetic methods are used with pulsed UV lasers. Pulsed UV lasers produced under controlled radio frequencies, when created around reaction mixture in-situ conditions under the influence of pre-determined and controlled micro waves can enable high yield of reaction rates ranging 17% to 90/100%. In another embodiment of the present invention, the different mechanical advantage systems are chain-screw rod unidirectional system, planetary gear system or hydraulic arms. In another embodiment of the present invention, depending on chemical composite, waves such as but not limited to the microwaves, radio waves, ultrasonic waves, UV laser, UV, laser has been used to break the bond.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject matter of the invention will be explained in more detail in the following text with reference to preferred exemplary embodiments which are illustrated in the attached drawings, of which FIG. la and lb show chemical reactor according to the present invention; FIG. 2 shows cross sectional diagram of chemical reactor according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The present invention provides a system and method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis. A chemical reactor is constructed with ultra low energy consuming servo motors and pneumatically controlled agitation systems. The reactor comprises low energy consuming pneumatically controlled compressed gas injection system with thermo electric refrigeration device and circulation of chilled water in the jacket systems. Multiple sensors such as without limitation infrared, level, pH, temperature, pressure, humidity or any other such kind are provided within the reactor. These sensors are attached to intelligent control system through which user controls the chemical reaction of the reactor. Infrared sensor system monitors the nature of reactions inside chemical reactor.

The chemical reactor comprises blender made of blades to mix two or more chemicals. The blender is driven by brushless DC (BLDC) motors. The present system is equipped with piezo based refrigeration system in reactor jacket systems. A tank is provided to rotate the chemical mixer blender. The layers of hallow space with some thickness around the cylinder is provided inside the tank in which peltiers are placed along with thermal conductive liquid. These peltiers are used for achieving equilibrium heating inside the chemical mixer chamber. Peltiers heats or cools the mixing chamber by reversing the poles. Additional thermal conductive liquid is placed along with peltiers for providing proper heating and cooling effect. In an embodiment, the different mechanical advantage systems are chain-screw rod unidirectional system, planetary gear system or hydraulic arms.

In an aspect, the chain-screw rod unidirectional system is a combination of chain sprocket system in which movement to blender is given using positive displacement system. In another aspect, in planetary gear system, blender can be rotated using planetary gear system in which couple of gear is aligned in a particular system. In another aspect, hydraulic arm includes adiabatic friction compression based heating, unidirectional positive displacement system is used to lift a heavy piston by rack & pinion According to the present method, photo chemical reactions such as but not limited to the alkylation, acetylation and other type of free radical substitution reactions that are used in bulk drugs and other chemical synthetic methods are used with pulsed UV lasers. Pulsed UV lasers produced under controlled radio frequencies, when created around reaction mixture in-situ conditions under the influence of pre-determined and controlled micro waves can enable high yield of reaction rates ranging 17% to 90/100%.

The present method enhances the breaking of bond. In an embodiment, depending on chemical composite, waves such as but not limited to the microwaves, radio waves, ultrasonic waves, UV laser, UV, laser has been used to break the bond. Thus the reactions are done even without external heat addition. The optical fiber connected to microscope such as but not limited to the tetron microscope to examine the bond breaking reactions.

PATENT CLAIMS

1. A system of microwave and pulsed ultra violet (UV) laser based photo chemical reactions in chemical synthesis comprises chemical reactor with ultra low energy consuming servo motors and pneumatically controlled compressed gas injection system with thermo electric refrigeration device and circulation of chilled water in the jacket systems, multiple sensors attached to the intelligent control system and a blender driven by brushless DC (BLDC) motors.

2. The system of microwave and pulsed UV laser based photo chemical reactions as claimed in claim 1 wherein the said refrigeration system comprises a tank with mixer blender to rotate the chemical, the layers of hallow space with some thickness around the cylinder is provided inside the tank in which peltiers are placed along with thermal conductive liquid wherein the thermal conductive liquid is placed along with peltiers for providing proper heating and cooling effect.

3. The system of microwave and pulsed UV laser based photo chemical reactions as claimed in claim 1 wherein the said peltiers are used for achieving equilibrium heating inside the chemical mixer chamber and heats or cools the mixing chamber by reversing the poles.

4. The system of microwave and pulsed UV laser based photo chemical reactions as claimed in claim 1 wherein the different mechanical advantage systems are chain-screw rod unidirectional system, planetary gear system or hydraulic arms.

5. The system of microwave and pulsed UV laser based photo chemical reactions claimed in claim 1 wherein intelligent control system through which user controls the chemical reaction of the reactor

6. The system of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis as claimed in claim 1 wherein waves are selected from microwaves, radio waves, ultrasonic waves, UV laser, UV or the like. w._ in. _, „ , , ..

7. The system of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis as claimed in claim 1 wherein the yield ratio ranges from 17% to 90/100%

8. The method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis wherein the photo chemical reactions are used with pulsed UV lasers which are produced under controlled radio frequencies, when created around reaction, mixture in-situ conditions under the influence of pre-determined and controlled micro waves.

9. The method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis as claimed in claim 8 wherein the pre-determined and controlled micro waves enables high yield of reaction rates ranging 17% to 100%.

10. The method of microwave and pulsed UV laser based photo chemical reactions in chemical synthesis as claimed in claim 8 wherein the photo chemical reactions are selected from alkylation, acetylation and other type of free radical substitution reactions that are used in bulk drugs and other the like chemical synthetic methods.