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Common energy-saving and consumption-reducing measures in chemical processes

2018-12-25View Original

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  In the process of chemical production in our country, there is a significant consumption of relevant energy, which is highly detrimental to the development of this industry. Therefore, in the chemical production process, energy-saving and consumption-reducing technologies should be effectively utilized. Through appropriate methods, the entire production process should be optimized to prevent excessive energy consumption, thereby reducing the costs associated with chemical industry production, improving economic efficiency, and simultaneously minimizing environmental pollution.   1 The importance of energy-saving and consumption-reducing technologies in chemical processes The significance of using energy-saving and consumption-reducing technologies in chemical processes is reflected in the following aspects. Firstly, the use of energy-saving and consumption-reducing technologies can lower production costs. Over the past decade, global energy prices have risen sharply. For energy-intensive industries, energy costs account for over 80% of their total expenses, and chemical companies are a prime example of such industries. Therefore, in daily production, it is essential to utilize energy-saving and consumption-reducing technologies to lower energy costs and reduce energy consumption, thereby enhancing the competitiveness and profits of enterprises. Secondly, it can meet the needs of ecological and environmental protection efforts. Ecological pollution caused by chemical waste is extremely difficult to address; not only are the costs involved far higher than the economic value generated by the chemical products, but the cleanup process can also trigger a series of chain reactions. To better address the environmental issues caused by the chemical industry, **relevant industry standards are being gradually implemented in an effort to tackle the problems of high energy consumption and heavy pollution associated with chemical enterprises at their source; therefore, accelerating the use of such technologies can play a very positive role in this regard. Ultimately, it can also play a positive role in promoting the development of the chemical industry. Although China has relatively abundant resource reserves, its per capita resource allocation is far below the average level. Yet, the development of the chemical industry relies on energy consumption and the supply of resources. The sustainable development of the chemical manufacturing industry today.   2 Current status of energy conservation and consumption reduction in chemical processing At present, chemical enterprises are industries with high energy consumption, and a common issue among them is excessive energy use. If this problem can be effectively addressed, it will **improve the production efficiency and economic benefits of these enterprises. Based on the current situation, there are two main factors contributing to energy loss and waste in the production processes of China’s chemical enterprises: the minimum work required theoretically, and energy losses. The former is due to the need to ensure a certain speed during production, which results in certain driving forces as well as inevitable energy losses. When enterprises carry out manufacturing processes, numerous unreasonable and irreversible factors can lead to significant energy losses. At the same time, the theoretically minimum amount of work does not possess any energy-saving properties in itself; however, energy losses are mainly caused by human factors. Therefore, specific measures can be taken to control and modify these human factors in order to achieve energy savings and reduced consumption.   3 Analysis of Common Energy-Saving and Consumption-Reducing Technical Measures in Chemical Processes   3.1 Reducing Kinetic Energy Consumption in Chemical Production   In chemical production, workers also need to pay attention to kinetic energy consumption, and the following three methods can be used to effectively control it:   3.1.1 Motor drive systems. Chemical manufacturing enterprises adopt variable-frequency energy-saving methods for effective speed control. In the process of adjusting the speed of motor-driven systems, dynamic approaches are continuously used to modify traditional static valves, thereby upgrading and regulating them. This helps to maintain a stable dynamic balance in the motor-driven equipment of the system when it receives input and output commands. This method enables traditional chemical enterprises to effectively address the issue of excessive loading they face, ensuring that the motor-driven systems can maintain the same power output even after prolonged operation, thereby saving more energy.   3.1.2 Optimize the combined heating system for chemical processing processes. To achieve continuous optimization of the entire system through the adoption of energy-saving and consumption-reducing practices, chemical enterprises should start with the heating system. Since this system can provide the temperature required for production processes, by adjusting the temperature of the heat source it is possible to regulate the interaction between all equipment. This helps to improve the efficiency and smoothness of the conversion between cold and hot energy sources, thereby preventing the occurrence of high energy consumption with low efficiency.   3.1.3 Develop wastewater reuse technologies. While encouraging their employees to develop a sense of awareness regarding water conservation and environmental protection, chemical companies should also increase investment in and research on such technologies in order to improve the efficiency of water use. Additionally, they should explore ways to recover residual energy from sources such as electricity and heat, thereby helping these companies reduce their energy consumption to a certain extent. At the same time, converting waste heat and waste pressure into cooling and power generation capabilities through conversion technologies can also help save energy.   3.2 Controlling the overall energy consumption in production Improving chemical processes enables energy-saving and consumption-reduction technologies to function more effectively, thereby allowing for better control over the energy consumption in chemical production. There are mainly the following three methods: 3.2.1 Reducing the reaction consumption in chemical processes. Chemical enterprises need to determine the factors that lead to energy consumption in chemical processes through calculations, and develop specific solutions. This not only ensures safety in chemical production but also reduces waste resulting from the transportation of reactants, as well as lowering energy consumption during the production process, especially that related to non-solid reactants.   3.2.2 After confirming that the chemical process reactions can be carried out under normal conditions, it is necessary to continuously optimize the heat absorption associated with these reactions. It is essential to ensure that the temperature can be adjusted at any time; by controlling the temperature, the heat absorption can be reduced, thereby lowering the amount of heat involved in the overall production process and improving the efficiency of heat utilization in the motor operation system.   3.2.3 After completing the thermodynamic conversion, it is necessary to further refine the key conversion steps in chemical production, so as to properly control side effects during the reaction, minimize energy consumption and waste generation during the process, and ensure the effective separation of the products.   3.3 Appropriate addition of catalysts Catalysts are a very important element in chemical production, and they also play a key role in energy-saving and consumption-reduction technologies. However, in the process of chemical production, catalysts should be selected based on the products being manufactured, and their usage should be controlled to a certain extent; this can help improve the conditions and environment in which chemical production takes place. Furthermore, in the process of chemical production, it is possible to reduce the generation of by-products; this also allows for some control over the use of chemical raw materials, helping to avoid unnecessary expenses. This plays a very important role in controlling and improving the costs and economic efficiency of chemical companies.   3.4 Enhancing the secondary use of wastewater   During chemical production processes, large amounts of wastewater are often generated. Therefore, enhancing the secondary use of wastewater is also a common technical measure among energy-saving and consumption-reducing techniques, aimed at avoiding significant waste of thermal energy and water resources. However, during the implementation of energy-saving and consumption-reduction technologies, certain control should be exercised over aspects such as the model and installation of steam traps, in order to prevent air leakage during equipment operation. At the same time, during the secondary reuse of wastewater, it should be promptly delivered to the chemical processing stages that require its use, in order to maximize the efficiency of wastewater utilization.   In summary, the optimization and upgrading of chemical processes can achieve effective energy savings and reduced consumption. To this end, it needs to be reasonably improved and optimized. The optimization and upgrading of relevant technologies can be achieved through various methods, such as strengthening limited regulation over chemical processes, effectively reducing energy consumption in chemical production, advancing technological upgrades and equipment replacements, effectively recovering the waste heat from chemical reactions, and improving the conditions under which chemical reactions take place. Thus, it helps chemical enterprises achieve greater economic and social benefits, contributing to a faster and better development of China’s economy.

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