Briefly summarize
On September 22, 2020, China solemnly announced at the 75th United Nations General Assembly that China will strive to reach the peak of carbon dioxide emissions by 2030 and strive to achieve the goal of carbon neutrality by 2060. At this point, the "double carbon era" of peak carbon dioxide emissions
and carbon neutrality is coming, and enterprises are called for green transformation.
Shanghai Liancheng (Group) Co., Ltd. is committed to the development of human fluid industry. It is a well-known leading equipment manufacturer in the water treatment industry in China, and it is the first to launch "SLOWN" and "SLS/W" products with high efficiency and energy saving, so as to face the
mission and responsibility entrusted by the "double carbon era".
This product has been successfully applied to the "first-line waste heat power generation circulating water system" and "production circulating water system" of Baoshan CONCH Co., Ltd., and achieved excellent energy-saving effect.
1.Introduction of Circulating Water System
1.1.Circulating water system for first-line waste heat power generation
The circulating water pump in the first-line waste heat power generation circulating water system provides circulating cooling water for three important heat exchanger users: condenser, oil cooler and air cooler. The water consumption characteristics of the three water users are different: the water
consumption of "condenser" is related to the load of steam turbine unit; The water consumption of "oil cooler" is related to the load of steam turbine unit and the ambient temperature; The water consumption of air cooler is relatively constant.
Among the above three users, the "condenser" is the largest user in the system, and the process of supplying the circulating cooling water delivered by the "circulating water pump" to the "condenser" is shown in Figure 1: Schematic Diagram of the Water Supply Condenser of the Circulating Water Pump:
1.2.Production Circulating Water System
The circulating water pump in the "production circulating water system" provides circulating cooling water for the production equipment in the plant. The main water supply points are: the water cooling jacket cavity of the bearing bush of the main exhaust fan (as shown in Figure 2), the oil-gas cooler of the
aircompressor, and the heat exchanger of the forced lubrication dilute oil station (as shown in Figure 3), etc. The ultimate purpose of the supplied circulating water is to take away the heat generated by the water-using equipment in the production process.
Figure 2 Figure 3
2.Project Execution Process
In the process of implementing the energy-saving transformation of the above two circulating water systems, the key points are as follows:
2.1: Understand the production of the system;
2.2: Understand the current operation of the system;
2.3: Understand the adjustment of system working conditions;
2.4: Determination of operating parameters
Based on the detailed understanding and communication of the "production situation", "current operation situation" and "working condition adjustment situation" of the system, the operating condition parameters of the circulating pumps of the above two systems are measured.
The main equipment for the determination process is:
1) Determination of flow parameters-Frekson ultrasonic flowmeter in Germany;
2) Measuring pressure-digital display pressure gauge (vacuum pressure gauge);
3) Measurement of electrical parameters-Metso power quality analyzer in Germany and Fluke clamp meter in the United States.
3.Project Transformation Execution Products
Two "SLOWN600-620B/8" high-efficiency and energy-saving customized pumps were used to transform the "first-line waste heat power generation circulating water system". See:
Figure 4: SLOWN600-620B/8 nameplate Figure 5: Installation of the transformed equipment on site
For the "production circulating water system", two "SLS200-400(Ⅰ)A" high-efficiency and energy-saving customized pumps and a vacuum water diversion device were used to transform the self-priming pump on site. See:
Fig. 6: SLS200-400(Ⅰ)A nameplate Fig.7: Installation of the reconstructed equipment on site
4.Energy Saving Benefit
According to the data of the National Development and Reform Commission, "… it consumes 3 tons of standard coal and emits 8.72 tons of carbon dioxide for every 10,000 kWh of electricity …". Based on the above standards, the profit of this energy-saving transformation is calculated with "annual operation of 8000h and electricity fee of 0.65 yuan /kWh", and the annual energy-saving profit after transformation is:
1) Annual electricity saving: 2 million kWh;The annual electricity saving is 1.3 million yuan;
2) Annual standard coal saving: 6 million tons, reducing carbon dioxide emissions by 1,744 tons.
According to statistics, the power consumption of pump products accounts for more than 20% of the total power generation in China. As a major energy consumer of enterprises, reducing the energy consumption of pumps is one of the key measures for each enterprise to save energy and reduce
consumption, and it is also the first step for enterprises to move towards "green development" and "sustainable development"!
5.Summary
Energy-saving transformation is a forward-looking activity that our company uses the advanced design technology and precision machining technology to carry out technical transformation and comprehensive utilization of energy on the existing equipment, processes and systems of enterprises. While
returning to the "Seiko Smart" pump products, it will help enterprises analyze energy consumption, improve the energy utilization rate of enterprises, and at the same time improve the product output and product quality of enterprises.
At present, Shanghai Liancheng (Group) Co., Ltd. can fully and carefully analyze a series of situations, such as the supply and return of circulating water in the system, the water supply flow of circulating water required by users, the requirements of temperature and temperature difference, the equipment
causing pressure drop, bypass and shunt, etc., and can grasp the working conditions parameters of pumps in mature, stable and fixed working conditions systems as a whole.
Based on the continuous exploration, discussion, summary and deepening of the group company in the field of energy-saving transformation, and relying on the "precision-made" high-efficiency energy-saving customized products and the assistance of team members, we will gradually bring customers a
"green mountain"!
