Industrial circulating water system is a very important part of industrial production, it plays a pivotal role in energy, environmental protection, safety and other aspects, so it needs to pay enough attention. This article will introduce in detail the basic concept, system composition, operation principle, common problems and solutions of industrial circulating water system.
First, the basic concept of operation.
An industrial circulating water system refers to a water system that circulates water to cool, heat, or transfer energy. In the industrial production process, a large amount of heat needs to be taken away through the water circulation system to ensure the normal operation of the equipment and the stability of the process. The circulating water system is usually composed of circulating water pumps, heat exchangers, pipes, valves, etc., and its operation process is to send water to the heat exchanger through the circulating water pump, transfer heat to the water through the heat exchanger, and then send the hot water back to the circulating water pump, forming a closed-loop system.
Second, the system composition.
The industrial circulating water system is mainly composed of the following parts:
1.Circulating water pump: The circulating water pump is the core equipment of the circulating water system, which is used to send water to the heat exchanger, and then bring it back from the heat exchanger to form a closed-loop system. The selection of circulating water pump needs to be matched according to the flow rate and head of the system.
2.Heat exchanger: The heat exchanger is one of the most important pieces of equipment in the circulating water system, and its role is to transfer heat from the process medium to the water, and then take the heat away from the water. There are many forms of heat exchangers, which can be selected according to different process needs.
3.Pipes and valves: Pipes and valves are an essential part of a circulating water system, and their role is to connect various devices and control the flow direction and flow of water. When selecting pipes and valves, they need to consider their properties such as pressure resistance, corrosion resistance, and high temperature resistance.
4.Cooling tower: A cooling tower is a device used to reduce the temperature of water in a circulating water system, and its role is to transfer heat to the air, and then take the heat away through the flow of air. There are many forms of cooling towers, which can be selected according to different process needs.
5.Water treatment equipment: Water treatment equipment is equipment used in circulating water systems to treat water quality, prevent scaling and corrosion, and other problems. Commonly used water treatment equipment includes filters, softeners, and dosing devices.
Third, the principle of operation.
The operating principle of the industrial circulating water system is mainly to send water to the heat exchanger through the circulating water pump, transfer the heat to the water through the heat exchanger, and then send the hot water back to the circulating water pump to form a closed-loop system. In this process, the temperature of the water rises or decreases, while the pressure and flow rate of the system remain constant. If the water temperature is too high or too low, the flow and pressure of the system can be adjusted by adjusting the speed of the circulating water pump or the opening of the valve to ensure the normal operation of the system.
4. Common problems and solutions.
During the operation of the industrial circulating water system, some problems may occur, such as system leakage, scaling, corrosion, etc. These issues can lead to problems such as degraded system performance, wasted energy, and security incidents. Solutions to these problems can be taken:
1.System leaks: System leaks can be caused by loose or damaged pipe connections, poor valve sealing, etc. The solution is to inspect and repair leaks, strengthen the sealing of pipe connections, and regularly replace wearing parts such as gaskets.
2.Scaling: Fouling is mainly due to the deposition of minerals contained in water on the surface of the heat exchanger. The solution is to treat the water with demineralized water or filters to reduce the minerals in the water; At the same time, chemicals can be used to prevent scaling on the surface of the heat exchanger.
3.Corrosion: Corrosion is mainly caused by the corrosive effect of acid and alkali substances contained in water on pipes and equipment. The solution is to treat the water quality to reduce the acids and alkalis contained in the water; At the same time, corrosion-resistant materials can be used to protect pipelines and equipment; In addition, technologies such as cathodic protection can be used to protect pipes from corrosion.
To sum up, the industrial circulating water system is a very important part of industrial production, and its operation directly affects the stability and safety of industrial production. Therefore, we need to understand the basic concept, system composition, operation principle, common problems and solutions of industrial circulating water system, so as to better maintain and manage industrial circulating water system.