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Chemical drying equipment is a drying equipment used for dehydration drying of chemical materials. Chemical drying equipment plays a crucial role in the chemical production process. On the one hand, the chemical drying equipment bears the entire process of chemical production. On the other hand, the innovation and development of chemical drying equipment will also promote the development of chemical production technology.
The basic requirements of chemical production for chemical drying equipment can be divided into two major categories: safety requirements and economic requirements.
In the service life of chemical drying equipment, safety and reliability are the most basic requirements for chemical production for chemical drying equipment. To achieve safety and reliability, several requirements must be placed on chemical drying equipment. For example, chemical drying equipment should have enough The strength, stiffness, stability, corrosion resistance, and sealing properties.
In the structural design, under the premise of safety and reliability, the economic requirements are also a basic requirement. For example: to reduce the cost of chemical drying equipment as much as possible, attention should be paid to saving the production of raw materials, especially the relatively high-priced materials, so as to reduce The cost of chemical drying equipment; also need to consider the later operation and maintenance more convenient and so on.
At present, the countries with high levels of foreign packaging and food machinery mainly include the United States, Germany, Japan, Italy and the United Kingdom. Germany's packaging machinery is leading in design, manufacturing and technical performance. In 2002, the value of packaging machinery in Germany reached 3.4 billion euros, and 77% of its output was exported. In recent years, there has been a new trend in the development of packaging and food machinery equipment in these countries. Process automation is becoming more and more automated. At present, automation technology accounts for more than 50% of packaging production lines. Computer design and mechatronic control are used extensively to increase productivity, increase flexibility and flexibility of equipment, and increase robots to complete complexities. Packaging action (simulated manual packaging). Each robot is controlled by a separate computer. The camera monitors the packaging action and feeds the information back to the computer to adjust the movement to ensure high quality packaging.
At the same time, it has automatic identification function for the material and thickness of the packaging, and then it is an “adaptive†system to ensure that the system works in an optimal state. Improve production efficiency, reduce process costs, and maximize production requirements. Germany's beer beverage filling equipment has reached 120,000 bottles/hour, and cigarette packaging machines have reached 12,000 bottles/minute. Once a high-speed device fails, the loss is equally astonishing. Therefore, a high-speed device must have a fault analysis system (self-diagnosis system) and can eliminate the fault by itself, so that the productivity can be improved.
To adapt to product changes, the design needs to have good flexibility and flexibility. In order to meet the needs of competition, the cycle of product replacement is getting shorter and shorter, some products even change every season, and the output is very large. The service life of packaging machinery is much longer than that of products. Life cycle, so some packaging machinery to be able to adapt to product changes, can only be flexible and flexible to adapt to, including the amount of flexibility, flexibility of construction and supply flexibility. The structure can adopt modularization of the unit, and the flexibility of supply refers to a variety of packaging combinations that can be realized in one machine, and multiple inlets and different forms of packaging are provided.
Complete supply capacity. Such as a beverage filling line, there are more than 200 microcomputer parts, more than 100 kinds of control software, filling and capping part is two sets of combinations, and other parts are shared. A supplier can perform engineering design, installation, and commissioning for users, and finally submit user acceptance. The packaging machinery design generally uses simulation design technology to store various machine units in a database in a computer format. At the same time, the drawings are digitized and input into a computer. The computer automatically synthesizes the three-dimensional model; then the actual production indicators and data are transmitted to Europe.
Due to public opinion, the European Union established a labeling system for genetically modified foods, and the regulations covering this matter in April 2004 took effect. Many other countries have also followed the example of the EU. However, the birth of the labeling system has also attracted attention to compliance control, which led to research on methods for sampling and analysis of genetically modified foods. Under the proposal of Germany (formally starting the research on genetically modified organisms in 1997), the Food Analysis Technical Committee (CEN/TC275) set up a working group to develop standards for the detection of genetically modified organisms and foods. The working group gathered representatives from the scientific community, the food industry, analytical laboratories, and food control agencies.
ISO established a working group in July 2000 in accordance with the framework of the 1991 Vienna agreement. The draft standard is dominated by CEN and has been evaluated by ISO and CEN members, and finally reviewed by the ISO working group. If peer-voted, the standard will become a CEN/ISO standard, consisting mainly of sampling methods, protein methods, nucleic acid extraction methods, quantitative nucleic acid methods, basic requirements, and definitions. The entire standard development process will be based on genetically modified food testing strategies.
At present, a draft standard for real-time quantitative PCR detection of transgenic organisms containing oil seeds and oilseed (soy) flour has been established. Microbiological analysis standardization With the intensification of microbiological food contamination on the human body, consumers and health management departments are increasingly pressing for the establishment of a microbiological testing standard with credibility and international coordination as a means of government control and international trade. In the mutual recognition. To this end, ISO has played its coordinating role and is committed to the standardization of microbiological analysis, aiming at making the standard widely applicable to environmental samples in the fields of food, animal feed, food production and food processing.
The formulation of the ISO standard cited the legislation of other countries based on the European Microbiological Standards Regulations (Draft). The standard is the basis for laboratory accreditation in the field of food microbiology and will also benefit the food industry. At present, the progress of standard formulation is as follows: Draft ISO 16140 Alternating Microbiological Verification Method for Food and Animal Feed Products was published in 2003. ISO 6579 food and animal feed products - Method for the detection of microorganisms (Salmonella). The standard makes the most general analysis of food microbial pathogens. At the same time, the standards include internal test data from laboratories in the United States and Europe. The ISO working group is currently working on the development of guidelines for the measurement of uncertain microorganisms.
Changzhou City is a concentration place for dry equipment manufacturers
At present, Changzhou City, which has the largest concentration of drying equipment manufacturing companies, has more than 300 total companies. None of its annual sales revenue exceeds 100 million yuan, and only one older enterprise has achieved its first-rate achievement in 2002. Over 100 million yuan in sales revenue, and only once before and after. Other better companies sell 50 million to 60 million yuan a year, and the average company is about 20 million yuan. The local private chemical companies that developed during the same period did not have dozens of sales revenues of several billion yuan a year.