Processing raw materials

Food processing firms producing heat-preserved, frozen, dehydrated, or chemically preserved foods may be classified by their finished products. Companies may be further grouped based on whether they process raw materials into ingredients, such as in poultry and meat processing plants, or whether they take these ingredients and convert them to ready-to-eat consumer products. 

Elements that the researcher evaluates about competitors include plants, processes, raw material costs and avakabiHty, distribution channels, product development skills, service faciHties, personnel, pricing poHcies, eg, does the competitor lead or foUow , and practices or concessions to secure and hold large customers. AH of these factors are weighed and then the researcher decides on a strategy for the company. 

Process Raw Material. Industrial solvents are raw materials in some production processes. Eor example, only a small proportion of acetone is used as a solvent, most is used in producing methyl methacrylate and bisphenol A. Alcohols are used in the manufacture of esters and glycol ethers. Diethylenetriamine is also used in the manufacture of curing agents for epoxy resins. Traditionally, chlorinated hydrocarbon solvents have been the starting materials for duorinated hydrocarbon production. 

There are two principal biotechnological appHcations dealing with steroids. Microbial agents are used for processing raw materials into useful intermediates for general steroid production and for specific transformations of steroids to advanced intermediates or finished products (120,145). 

Processing Raw Materials. Along with the aforementioned chemical methods of processing steroid raw materials, microbial transformations have been and are used in a number of commercial degradation processes. The microbial degradation of the C17 side chain of the two most common sterols, cholesterol (2) and P-sitosterol (41), is a principal commercial method for the preparation of starting materials in Japan and the... 

In addition, all of the process raw materials must be clean and not iatroduce contaminants. The raw materials and temporary coatings must also be defect-free, and these have to be manufactured under similar conditions so that no contaminants are iatroduced. The solvents used to clean the substrate and develop the resists must be filtered and pure. Care must also be taken to ensure that no trace compounds or elements are present that may affect the electronic properties. The specific type of coating aid, the type of functional coating, and the process used to apply the functional coating are all widely varied ia actual practice. 

Understanding the behavior of all the chemicals involved in the process—raw materials, intermediates, products and by-products, is a key aspect to identifying and understanding the process safety issues relevant to a given process. The nature of the batch processes makes it more likely for the system to enter a state (pressure, temperature, and composition) where undesired reactions can take place. The opportunities for undesired chemical reactions also are far greater in batch reaction systems due to greater potential for contamination or errors in sequence of addition. This chapter presents issues, concerns, and provides potential solutions related to chemistry in batch reaction systems. 

Activated carbon is an amorphous solid with a large internal surface area/pore strucmre that adsorbs molecules from both the liquid and gas phase [11]. It has been manufactured from a number of raw materials mcluding wood, coconut shell, and coal [11,12]. Specific processes have been developed to produce activated carbon in powdered, granular, and specially shaped (pellet) forms. The key to development of activated carbon products has been the selection of the manufacturing process, raw material, and an understanding of the basic adsorption process to tailor the product to a specific adsorption application. 

If possible, produce and consume hazardous raw materials in situ. Some process raw materials are so hazardous to ship and store that it is very desirable to minimize the amount of these materials on hand. In some cases, it is possible to achieve this... 

In production processes, raw material are converted into desired products using a series unit operations of unit operations. Such unit operations may be few in number and they are linked together in a logical sequence. Typical unit operations include such activities as the transport of solids and liquids, the transfer of heat, crysallisation, collection and drying. 

Throughput is in simple terms the average saleable production output per a given time unit. Cycle time is the average time between the release and completion of a job, in other words, the rate at which products are manufactured. Key parameters that affect throughput in a chemical plant include the chemical conversion, yield, capacity and availability of existing equipment, process time, cycle time, number of chemical steps, number of unit operations, plant layout, warehouse processes, raw material availability, process bottlenecks and labour availability, amongst others. 

Quality control tests or improvement of existing processes. Raw materials from various sources can be used in the manufacture of fine chemicals and pharmaceuticals. The raw materials can contain different impurities at various concentrations. Therefore, before the raw material is purchased and used in a full-scale batch its quality should be tested in a small-scale reactor. Existing full-scale procedures are subject to continuous modifications for troubleshooting and for improving process performance. Laboratory reactors used for tests of these two kinds are usually down-scaled reactors or reactors being a part of the full scale-reactor. 

A further specification given was the amount of water required by each process to process raw material. In unit 1, 1 kg of water was used to process 3 kg of raw material. In unit 2, 1 kg of water was required to process 2 kg of raw material and in unit 3, 1 kg of water was required to process 1.5 kg of raw material. The time... 

As with the previous example the amount of water used to process raw material is given. The ratios used for the first three units, units 1, 2 and 3, are exactly the same as in the previous example, namely, 3 kg raw material requires 1 kg of water in unit 1, 2 kg raw material requires 1 kg of water in unit 2 and 1.5 kg raw material requires 1 kg of water in unit 3. For unit 4, 2.25 kg raw material requires 1 kg of water. The time horizon of interest is 8 h. 

Mass Balances Around a Unit Processing Raw Material... 

As well as overcoming many of the inherent problems associated with agriculture, plant tissue culture also offers a number of advantages over conventional animal cell culture methods currently being applied to produce biopharmaceutical proteins commercially [8], As plant culture media are relatively simple in composition and do not contain proteins, the cost of the process raw materials is reduced and protein recovery from the medium is easier and cheaper compared with animal cell culture. In addition, as most plant pathogens are unable to infect humans, the risk of pathogenic infections being transferred from the cell culture via the product is also substantially reduced. 

Process Raw Materials (without esterification) Features Producer... 

Similar regulatory environment FDA regulations, especially GMP. Basically similar manufacturing processes raw-material preparation, reaction, isolation, purification, workup. 

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