CW-2008 Multifunctional Microwave Reaction / Extraction Instrument
Since microwave was used in the field of chemical research in 1986, microwave chemistry has penetrated into many chemical research fields such as organic synthesis, inorganic synthesis, analytical chemistry, heterogeneous catalysis, oil recovery, oil refining, metallurgy, and environmental pollution control. Due to the particularity of the heating mechanism, non-thermal effect, and induced catalytic effect of microwaves, microwave chemistry has brought shocks to many chemical fields, especially organic synthesis. So far, the organic synthesis reactions that have been studied and achieved effects are: Diels-Alder cycloaddition reaction, rearrangement reaction, esterification reaction, Pekin reaction, alkylation, oxidation, substitution, condensation, addition and polymerization, etc., almost Involves various fields of organic reactions. In recent years, reports on microwave synthesis have increased rapidly, and new microwave synthesis or instruments are emerging.
At present, most foreign microwave synthesizers are very expensive. Although domestic related instruments are cheaper, they have serious shortcomings in terms of design concept, ease of use, and microwave leakage safety. For example, the space in the furnace cavity is too small, and too many glass instruments and stirring motors are placed on the top of the instrument, which makes the instrument too cluttered and extremely inconvenient to operate. In addition, mechanical stirring rods (especially metal stirring rods) in existing instruments may cause microwave leakage, posing a certain safety risk to the operator.
Shanghai Xintuo Analytical Instrument Technology Co., Ltd. designed and developed a new type of CW-2008 multi-functional CW-2008 with high degree of automation, easy to use, and humanization in consideration of the advantages and disadvantages of existing microwave synthesis / reaction instruments. Functional microwave reaction / extraction instrument.
◎ Microwave power and its control: The true non-pulse frequency-variable microwave power stepless adjustment function, which can be set dynamically, statically, edited or stored in the range of 0 ~ 1300W according to the program;
◎ Temperature and time control: Microwave heating temperature and stirring time can be arbitrarily set and modified. Temperature control range, room temperature ~ 300 ℃ (± 1 ℃); built-in high-efficiency cooling fan can speed up the cooling rate of the reaction system;
◎ Double agitation mode: There are two modes of forward-reverse mechanical stirring (0-1000 revolutions / min) and magnetic stirring (0-200 revolutions / min). According to the requirements of different reaction systems, it can be performed simultaneously or switched to each other. The stirring time, speed and stirring method can be set or changed at will.
◎ Operating procedure: It can set, modify and store up to 100 experimental operation methods. There are 10 operation steps (work steps) in each operation method. Parameters such as reaction temperature and reaction time in each step can be arbitrarily set and run according to the program; during the operation, the control mode and various parameters can be arbitrarily modified according to the actual situation;
◎ Anti-corrosion furnace cavity and chemical reactor: effective space is up to 65 liters; special high-strength silicon-borosilicate glass reaction container, the standard configuration is 250mL, 500mL, and 1000mL (25-1000mL can be configured as required)
◎ Gas protection system: the inert protective gas gas path built in the temperature measuring sleeve makes the reaction vessel and its installation more simple and convenient;
◎ Terminal control and display: full touch screen man-machine dialogue panel control without keyboard operation, parameter setting and experimental operation as you want; large terminal display screen makes information display more abundant; various experimental parameters and working status (such as temperature, power and Its changes, stirring rate and its forward-reverse mode, etc.) are displayed in different color curves, so that the operator can see at a glance; built-in color camera, real-time observation of the sample reaction;
◎ Others: power supply, 220 ± 10% V, 50 Hz; instrument power: 1600W; microwave frequency: 2450 MHz; overall dimensions, 610 mm × 450 mm × 630 mm; net weight, 40 kg
◎ Simple work surface and protective gas path: The mechanical stirring motor, stirring rod, ventilation protection pipeline and temperature measurement components are completely built in, which makes the working table on the top of the instrument simpler and easier to operate; the specially designed stirring rod and its microwave The shielding method simplifies the installation / removal operation of the reaction vessel, and overcomes the microwave leakage phenomenon that often occurs in existing instruments; the protection gas pipeline and the temperature measuring sleeve are combined into one, making the reaction vessel and its installation more simple and convenient. ;
◎ True frequency conversion microwave: the use of high-frequency high-power resonance microwave power supply, so that the instrument has a true "non-pulse frequency conversion microwave power control and adjustment" function; the use of continuous microwave output (research shows that the pulse microwave in the "on "And" Off "moments will generate high-threshold electromagnetic pulses, which will cause large temperature oscillations, and will also easily destroy the organic molecular morphology, which will affect the consistency of the experimental results. The continuous output mode of microwaves ensures that microwaves are always present during the experiment . The adverse effects of pulsed microwave on experiments are overcome.
◎ Ultra-large microwave cavity: The volume of the microwave cavity is as high as 65 liters, which is much larger than similar products at home and abroad, making the reaction container volume large or small (25-1000 mL).
◎ Unique stirring design: the instrument is equipped with mechanical and magnetic stirring methods, and has stepless adjustable forward-reverse function. Users can freely select, set or switch according to their needs (such as reaction system or solution viscosity).
◎ Advanced control unit: It adopts internationally certified high-reliability control components, and its mean time between failures (MTBF) can be as high as 30,000 h; it replaces traditional PID control algorithms with advanced FTC intelligent control algorithms, which significantly improves the quality of adjustment and full touch. Large-screen human-machine dialog panel control, no keyboard operation required, parameter setting and experimental operation as you wish.
◎ Multiple safety measures: double safety door protection; special stirring rod design to make microwave leakage less than 0.3 mW / cm 2 (national standard is 5 mW / cm 2 );