Shenyang Hunnan Avenue Expressway Tunnel The standard section of the Shenyang Hunnan Avenue Expressway Tunnel is 27.5 meters wide, and the widened section is 48 meters wide. It is the widest urban expressway tunnel in Northeast China. Together with the Changqing Street Expressway and the Shengli Street Expressway, it has initially formed an expressway network system, which is conducive to supporting the outward flow of urban functions, opening up the urban pattern, effectively alleviating traffic congestion in the central area, and at the same time strengthening the transportation connections between the peripheral new cities and the central area. , it is of great significance to realize the southward transfer of the city’s second ring function. In the standard section, the width of a one-way single-hole tunnel can reach 12.25 meters, and the width of a single lane can reach 3.5 meters; while the width of a general one-way, single-hole, three-lane tunnel is about 11.5 meters, and the width of a single lane is 3.15-3.2 meters. For the decoration project in the tunnel, all the equipment selected are from well-known first-line brands at home and abroad. Anhui Huanrui undertook the design, supply, commissioning and operation of the tunnel fire pipeline electric heating cable project in this project. Project application background The project is located in the Northeast region, where extreme low temperatures in winter can reach -30.6°C and the average temperature is around -10°C. Therefore, it is necessary to antifreeze the water in the fire pipes in the highway tunnel that have been relatively static for a long time to prevent The fire-fighting system will be paralyzed due to freezing blockage, which may lead to safety hazards due to the inability to use it in special circumstances. Anhui Huanrui Tunnel Fire Pipe Electric Heating System Anhui Huanrui Tunnel Fire Pipe Electric Heating Cable System (the product used in this project is a series constant power electric heating belt). The electric heating belt is directly laid or wound and applied closely to the surface of the fire pipe to supplement the heat loss. Along its own length The range adjusts the water temperature at each control point of the pipeline system to maintain the water temperature within the required temperature range, thereby achieving the purpose of preventing pipeline freezing. The tunnel fire pipeline electric heating system consists of electric heating tape, power supply system, accessory system, control and detection system, etc. During operation, the heating system can be monitored and tested in a timely manner to facilitate users to turn on and off the system in time. Working principle of series constant power electric heating cable The series constant power electric heating tape is an electric heating product with a core wire heating element. That is, when current passes through a core wire with a certain resistance, the core wire emits Joule heat due to the resistance per u...
Project Description: Qinghai Asia Silicon Semiconductor Co., Ltd. is jointly funded and established by Asia Silicon (Qinghai) Co., Ltd. and Qinghai Kaishi Comprehensive Industrial Development Co., Ltd., covering a total area of 1,234.83 acres, with a total investment of 5 billion yuan, and plans to build 60,000 yuan in two phases. tons/year electronic grade polysilicon production line, the first phase of which is planned to have a construction scale of 30,000 tons/year. After the completion of the two-phase project, the total output value will be approximately 4.5 billion yuan, and the annual tax payment during the operation period will be approximately 900 million yuan. Polycrystalline silicon material is an electronic material that uses industrial silicon as raw material and is purified through a series of physical and chemical reactions to reach a certain purity. It is an extremely important intermediate product in the silicon product industry chain and is used to manufacture polished silicon wafers, solar cells and high-purity silicon products. The main raw materials are the basic raw materials for the information industry and new energy industry. After more than 10 years of development in the Xining Economic and Technological Development Zone, Asia Silicon has become in line with the international leading level in polysilicon process technology, and its product quality has been highly recognized by leading customers in the industry. (The above content comes from the Internet) The main construction contents of the project include: hydrogen production system, liquid chlorine vaporization and hydrogen chloride synthesis system, trichlorosilane synthesis system, distillation system, reduction system, finishing system, tail gas recovery system, industrial waste gas treatment system and supporting public and auxiliary projects. Since the project is located in the Qinghai area, the temperature in winter can be as low as -20°C, which can easily cause the polysilicon process pipelines to freeze during the production process, affecting normal production. Therefore, it is necessary to use insulation facilities such as electric heat tracing to maintain Temperature of polysilicon process pipeline production. Heat tracing device: external pipes of the whole plant, trichlorosilane synthesis device, distillation device, reduction device, exhaust gas recovery device, finishing device, exhaust gas and wastewater treatment device, cold hydrogenation device, slurry recovery device, tank storage tank and other devices district. Electric heating products: Qinghai Asia Silicon Industry's polysilicon process production pipelines have many and complex heating devices. Our technicians selected low-temperature self-limiting electric heating devices based on the temperature requirements of different pipelines and on-site environmental conditions. Heating tape DBR-25-220-PB, medium-temperature self-limiting electric heating tape ZBR-50-220-PB, high-temperature self-limi...