1 Introduction The topic of energy conservation is relatively large. Since there are many aspects of energy use, such as water, electricity, steam and gas, there are many topics to discuss from the production, use, management and recycling of energy. This paper analyzes the use of gasoline, which is widely consumed in the production and use of drugs, and the use of energy, in order to make a brick.
The pharmaceutical industry is actually a sub-sector of chemical production, and the chemical industry is a major energy consumer. The type and amount of energy used is determined by the production process. We know that chemical production processes can be subdivided into several unit operations such as filtration, separation, evaporation, crystallization, drying, and the like. These processes do not require energy consumption, and some of the unit operations consume considerable energy. Therefore, understanding the principles and processes of the unit operation is not only critical to the understanding of the production process, but also to the analysis of the energy consumption of its production process. Therefore, the pursuit of energy saving and consumption reduction should first be carried out under the premise of ensuring that the production process is met. Of course, the process is not static. It can be said that the production process of the product has been continuously improved since the day it was born. The starting point and purpose are nothing more than improving quality or yield, yield, or reducing cost and labor intensity, or reducing environmental pollution, or increasing safety. In a word, in order to increase efficiency, the benefits here should refer to economic and social benefits. Now some unscrupulous manufacturers have sacrificed their social benefits to obtain their partial, temporary, illegal, unethical benefits and profits. This practice has gone beyond the normal moral and legal bottom line, and Zui is ultimately tarnished by society and the public. Severe punishment of the law.
Two major starting points for energy-saving methods: (1) Improve the operating efficiency, reduce unnecessary power, or increase production capacity to improve the unit energy consumption by improving the equipment itself. There are many such practices, among which the improvement of heat transfer efficiency, reduction of energy loss and mechanical wear are also common methods; (2) there is much to do in the rational allocation of production power equipment, such as avoiding "big horses The phenomenon of using frequency conversion technology to adjust the power changes to achieve energy-saving purposes and so on.
In addition to the energy-saving starting point discussed above, which is to improve and transform from the existing equipment itself, the author proposes that the starting point of another energy-saving method is to analyze the process and essence of process energy consumption, which can be from most of the industry. Focus on the energy consumption of enterprises, think about the nature of energy consumption in the process and seek breakthroughs, so as to reduce energy consumption as much as possible, so that efficiency is doubled or multiplied. This is the key and characteristic of energy saving in our industry. It is also the focus of potential. This is also the content of this article to focus on the analysis and discussion.
2 Energy-saving key points and key points of chemical and pharmaceutical enterprises For the unit operation in the chemical production process, the production enterprises have deep experience and experience. In particular, unit operations for evaporation and drying, which all involve heat transfer problems, which cause a "phase change" in the medium. For example, both evaporation and drying change the composition of the material (usually water) from a liquid to a gas, that is, from a "liquid phase" to a "vapor phase." This "phase change" process is particularly energy intensive. As we all know, the specific heat of water is 1kcal/kg·°C, that is to say, 1kg of water requires 1kcal of heat for every 1°C rise in temperature. Heating 1 kg of water from 0 ° C to 100 ° C boiling theoretically requires only about 100 kcal of heat. However, if it is heated at this temperature of 100 ° C to vaporize it to become steam of the same temperature, about 539 kcal of heat is required. That is to say, the energy consumption is 539 times the amount of heat required to raise the temperature of the same weight of water by 1 °C. The heat that causes it to "phase change" is called "vaporization heat." Conversely, when 1kg of 100°C steam is condensed into water of the same temperature, it will release so much heat. This heat can also be called “condensing heatâ€, so the heat of vaporization and the heat of condensation are on the same substance. The values ​​at the same temperature are equal.
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