Monday, March 1, 2010

Identification Unit Operations in Process And Industrial Chemistry.

Unit Processes and Unit Operations is the core of Industrial Chemistry, because the unit processes and operations in this process is to determine whether economic or a process. As explained in Chapter I, Unit Operations is the part of the process system, which in this section is more emphasis on changes that are more physical, while the emphasis on process units that are chemical changes. Course of the two units are required tools (equipment) to make changes. Equipment for unit operations enough, in which some symbols of the equipment has been discussed in the previous sub-chapter.

One that should be considered in the process system is a continuous process and the process is not continuous. The process is not continuous (batch) or called by Tumpak is a system process when the process there is no insert (input) and output (output). The process with continuous or continuous system is a system process when the process is entered and the output. If only there or just put it there just the output or sometimes issued or added during the process, the process is called a semi Tumpak (semi-batch).

In the continuous system (continuous) after some time will occur a steady state (steady state), it is because the system does not happen accumulation or accumulation = 0, where the general formula of a system can be expressed as:

[accumulation = input - output].

Accumulation is a change of variables observed in these systems (eg concentration, temperature) as a function of time. Thus the continuous system in a condition where input = output, as a result of accumulated = 0, or in other words with the steady-state system is a system where the observed variable (eg concentration or quality of the product) does not change with time or is not a function of time. Conversely, Tumpak system, the observed variables will change during the observation time.

Based on these conditions, then a chemical industry where the product produced in large quantities, generally carried out by continuous or continuous system. These considerations yand quality products produced will be more uniform. On the other hand to an industry if the amount produced is relatively small (eg the pharmaceutical industry) is the industry uses a batch system or not continuous. The same is done for an industry, where production is seasonal or dependent on consumer demand (eg the clothing industry, textile, food), then the industry will use Tumpak system.

Equipment used for continuous systems are generally smaller than Tumpak system but the system required continuous control tool that is more stringent than Tumpak system.

PROCESS OF CHANGING SIZE SOLID MATERIAL
Almost most solid materials have a size that is large enough to be a process of physical as well as solid kimia.Bahan small size would be easier to handle. In addition, the process is heterogeneous (two phase), eg solid-liquid or solid-gas depends on the contact between solids with gases or liquids. Where the contact will depend on the solid surface area 242. Therefore the greater the surface area of solids, then either the physical or chemical will be more baik.Untuk increase the surface area of solids, the solid material should be changed in size becomes smaller (size reduction). In general use the word destruction (crushing) and grinding, penggerusan (grinding) to change the solid particles from large to small sizes.

Unit Processes and Unit Operations is the core of Industrial Chemistry, because the unit processes and operations in this process is to determine whether economic or a process. As explained in Chapter I, Unit Operations is the part of the process system, which in this section is more emphasis on changes that are more physical, while the emphasis on process units that are chemical changes. Course of the two units are required tools (equipment) to make changes. Equipment for unit operations enough, in which some symbols of the equipment has been discussed in the previous sub-chapter.

One that should be considered in the process system is a continuous process and the process is not continuous. The process is not continuous (batch) or called by Tumpak is a system process when the process there is no insert (input) and output (output). The process with continuous or continuous system is a system process when the process is entered and the output. If only there or just put it there just the output or sometimes issued or added during the process, the process is called a semi Tumpak (semi-batch).

In the continuous system (continuous) after some time will occur a steady state (steady state), it is because the system does not happen accumulation or accumulation = 0, where the general formula of a system can be expressed as:

[accumulation = input - output].

Accumulation is a change of variables observed in these systems (eg concentration, temperature) as a function of time. Thus the continuous system in a condition where input = output, as a result of accumulated = 0, or in other words with the steady-state system is a system where the observed variable (eg concentration or quality of the product) does not change with time or is not a function of time. Conversely, Tumpak system, the observed variables will change during the observation time.

Based on these conditions, then a chemical industry where the product produced in large quantities, generally carried out by continuous or continuous system. These considerations yand quality products produced will be more uniform. On the other hand to an industry if the amount produced is relatively small (eg the pharmaceutical industry) is the industry uses a batch system or not continuous. The same is done for an industry, where production is seasonal or dependent on consumer demand (eg the clothing industry, textile, food), then the industry will use Tumpak system.

Equipment used for continuous systems are generally smaller than Tumpak system but the system required continuous control tool that is more stringent than Tumpak system.

PROCESS OF CHANGING SIZE SOLID MATERIAL
Almost most solid materials have a size that is large enough to be a process of physical as well as solid kimia.Bahan small size would be easier to handle. In addition, the process is heterogeneous (two phase), eg solid-liquid or solid-gas depends on the contact between solids with gases or liquids. Where the contact will depend on the solid surface area 242. Therefore the greater the surface area of solids, then either the physical or chemical will be more baik.Untuk increase the surface area of solids, the solid material should be changed in size becomes smaller (size reduction). In general use the word destruction (crushing) and grinding, penggerusan (grinding) to change the solid particles from large to small sizes.

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