2. MIXING PROCESSING OF CHEMICAL SUBSTANCE INDUSTRIAL CHEMISTRY CLASS : XI SEMESTER : 3

3. MIXING  mixing materials is one of the important processes in the chemical industry.  mixing is the material spread in random order, where the material to spread in one of the other as well as vice versa, are materials that previously separated in two or more phases which eventually results establish a more uniform (homogeneous).

4.  In the process of mixing required for the mechanical style of the materials so that the results obtained are homogeneous.  Body mechanics obtained as a result of the flow of materials or equipment produced by the blender.  Some of the equipment used to mix the liquid can also be used to mix the solid or paste, and also vice versa. Teknologi dan Rekayasa

5. Some of the goals that need to be in the process of mixing are: Generate a mixture of materials with specific and homogeneous composition. Maintaining the condition of the mixture during the process chemistry and physics in order to remain homogeneous Having broad surface contact between the components of Eliminate the concentration difference and temperature difference, heat exchange Removing the equally gas-and steam-gas fumes that arise. Generate a half so that the materials easily processed in the next, or the final product (commercial product) is good.

6.  Factors that influence the process of mixing, mixing time and energy required for mixing is : Flow Flow rate of turbulen and flow material which is usually the high-mixing process.  Instead, the laminar flow can counteract mixing : particle size / surface wide The broad surface of the contact material must be mixed, which means that the small particles and the more easily movement in the mix, the process of mixing the better. solubility, The solubility of materials that will be mixed one and the other, the better in the mix.

7.  Selection Tools blender : Selection tool blender method of mixing and also mainly based on: The types of materials that will be mixed type of mixture that will be made Number of the mixture will be made Degree of mixing to be achieved The purpose of making the mixture operating system (continuous, intermittent)

8.  In addition to the things mentioned above, one of the things that need to be in determining which equipment should be used in the mixing phase of the material is to be mixed. Next will be discussed based on the mixing phase of the mixed material.

9. Material mixing Liquid-Liquid  mixing with the liquid fluid used to prepare or perform processes of chemistry and physics and also to create the final product commercially. The tool used for mixing the liquid- liquid material can be a tank or vessel equipped with a mixer. In the tank is installed in the mixer (impeller) at the end of the swing axis, meaning that at axis from the top. Axis is driven by the motor, which is sometimes directly connected with the axis, but usually connected through a gear box to reduce speed.

10. Tools liquid-liquid mixing

11.  Material mixing solid-Liquid In the process of industrial chemical products that are ready for processing, and on the half-finished products, often dense materials must be mixed with a small amount of liquid. Here, the materials can compact the moist mixture, or a very viscous such as pasta or dough. Often the fluid also should be added to the pasta, the dough or mass that is plastic.

12.  Example: mix the powder with liquid to (granulat)make the grain-grain mix the pasta in the pharmaceutical Active substancesand cosmetics industries with the mix of plastic helper (for example, tenderizer, stabilizier,with synthetic materials coloring materials). Tools that are used can be a tank or vessel is a vertical cylindrical, crushing the materials and twisting by one or two tools that are similar intervention mixer

13. Tools blender solid-liquid

14.  Material mixing solid-solid mixing of two or more of solid material found many products that will generate commercial industrial chemicals. mixing coloring material with a coloring material or other with auxiliary materials to produce a certain nuance of color or bright color. The tool used for mixing with the solid material can be dense vessel-the vessel rotates, vessel or vessel-based but still has a rotary blender equipment, or pneumatic.

15.  Material mixing Liquid-Gas To process a particular chemical physics and gas must be included in the liquid, meaning that liquid is mixed perfectly with the material forming gas. Process hydrogenation, chlorination and fosfogention liquid by air oxidation (fermentation, the air entering into the mud in the installation neutralization biological) Improve the level (solution) gas in liquid (such as HCL in water, oxygen in the liquid-liquid) Generating alkali (such as a foam fire extinguisher).

16.  Tools blender treat To have an efficient work, not only power needs, which is the most important but also the rate of achievement and the desired degree of mixing and scheduled maintenance. That has been proven very difficult to obtain the degree of mixing want at a time, and the decision to determine when the material is still mixed depending on the estimates, and decisions of the service and maintenance activities that continue.

17.  Several methods of treatment need to be so effective stired is based on: 1. Rate on a stupid electrolyte 2. Rate distribution in the mixture of sand in the water, and 3. Rate dissolution solid substance in a different solvent.

18. Treatment is done as follows:  Conditioning mixer can rotate in accordance with the desired operating conditions that is provided with the lubricant on the road tank mixer All equipment should not be quickly corroded mainly made of metal with iron rust from the road to clean and polish with sandpaper

19. Operating the equipment dehumidifier to reduce humidity in the air in the room save the mixing equipment vulnerable to corrosion. Mixing equipment is vulnerable to the influence of corrosion need to kept in a closed room, away from the possibility of air pollution due to free from materials to the corrosive environment. Teknologi dan Rekayasa

20. Closing the tool when not used to avoid the entry of dust to the dust-in tool. Please note that the dust can be corrosive pollutant attached the fly when the air can be brought into the tools and glue themselves to the surface components in the electronic device. Teknologi dan Rekayasa