Selective Laser Sintering - Sls Stereo Light Curing Molding - Sla
It mainly uses photosensitive resin as a raw material, and utilizes the characteristic that liquid photosensitive resin will cure quickly under ultraviolet laser beam irradiation. The photosensitive resin is generally liquid, and it immediately initiates a polymerization reaction and completes curing when irradiated with a certain wavelength of ultraviolet light (250 nm to 400 nm). SLA focuses on the surface of the light-curing material by focusing ultraviolet light of a specific wavelength and intensity to solidify it sequentially from point to line and from line to surface, thereby completing the drawing of a layered cross-section.
Selective Laser Sintering - Sls,Sls 3D Printing Service,Laser Sintering 3D Printing,Selective Laser Printing Ningbo Rongna Technology Co.,Ltd , https://www.service-machining.com
High temperature water source heat pump effectively solve the energy problem in the petrochemical industry
With the growing disparity between energy supply and demand, improving energy efficiency and recovering waste heat have become critical challenges. High-temperature water source heat pumps have emerged as a promising solution to address energy and environmental issues, particularly in the petrochemical industry. This technology is now widely adopted in Europe and the U.S., offering an effective way to utilize industrial waste heat.
Heat pumps work by transferring heat from low-temperature sources to high-temperature areas, using a portion of high-quality energy such as electricity or mechanical power. A high-temperature water source heat pump specifically recovers heat from industrial wastewater to produce hot water at 70–90°C, which can be directly used for heating and industrial processes.
In the petrochemical sector, the crude oil gathering and transportation system is a major energy consumer. This system requires both heat and energy to move crude oil from the reservoir to the production stage. Traditionally, natural gas produced on-site has been the primary heat source. However, efforts to reduce heat loss and improve furnace efficiency have dominated energy-saving strategies, with waste heat recovery often overlooked.
Many oil fields in China are now in their middle to late stages of development, resulting in a high water content in the produced crude oil. Approximately 70% of the produced fluid is water, mixed with 30% crude oil. This mixture is pressurized and transported to separation stations, where the separated water typically ranges from 40 to 60°C. For example, the Shengli Oilfield has 52 sewage stations discharging about 720,000 cubic meters of wastewater daily, with temperatures between 50–70°C. Among these, 14 stations operate above 60°C, producing around 260,000 cubic meters of warm water per day—representing a significant untapped thermal resource.
By applying high-temperature heat pumps to recover just 5°C of waste heat, up to 73,000 kW of energy could be reclaimed. With a potential heat output of up to 100,000 kW, this is equivalent to the energy from 10 tons of crude oil burned per hour, or about 87,600 tons annually. If the heat pump is used to lower the temperature of oil-contaminated water by 20–30°C, it could save approximately 350,000 tons of crude oil each year—about 1% of the Shengli Oilfield’s annual output. This demonstrates the immense economic value of high-temperature water source heat pumps in maximizing waste heat utilization and creating substantial energy savings.