Thread Content
The slag lockhoppers for the energy-saving technology upgrade project for gasification at Chongqing Xiangyu Salt Chemical were successfully installed. Author/Source: Huahua Net Coal Chemicals. Date: April 8, 2022. Clicks: 13. At 10 a.m. on April 6, the two slag lockhoppers of the gasification unit in this upgrade project were lifted off the ground and successfully installed in place. The slag lockhopper weighs 38 tons and has dimensions of Φ2200mm×6500mm; it is an important component of the water-coal slurry gasification process. In this process, the slag lockhopper serves as a link between the upper and lower sections. Its upper part is connected to the gasification furnace via a slag breaker, which collects the residues remaining after the combustion of the coal slurry in the gasification furnace into a slag hopper. After collecting the slag for a period of time, the pressure in the slag hopper is released, and then the slag is discharged into the slag tank through the pipes and valves at the bottom of the hopper. The slag lock hopper is used to separate the slag from the crude syngas. It is reported that a dedicated operating program for the slag lockhopper was developed in order to achieve its automated operation. By programmatically controlling the operation of relevant valves, the lock hopper can carry out processes such as pressure relief, slag discharge, flushing, and slag collection. This program **reduces the workload** on operators and **lowers the probability of errors**, achieving a perfect integration of technology and production. The successful lifting of the slag lock hopper marks the official commencement of the equipment installation work in the gasification area. The general contracting project for the energy-saving technology upgrade of Chongqing Xiangyu Salt Chemical Gasification is located in Wanzhou District, Chongqing. The construction scale includes: a 300,000 tons per year ammonia synthesis plant, an air separation unit, a gasification unit, a purification unit, along with the associated utility systems (excluding boilers) and auxiliary facilities. Wuhuan Project won the general contract for the energy-saving technology upgrade project of Chongqing Xiangyu Salt and Chemical Gasification under the EPCC model, with the contract value awarded to Wuhuan Project amounting to approximately 1.056 billion yuan. The completion of this project represents an innovation in the energy-saving process technologies for existing ammonia synthesis plants; by reducing energy consumption, it plays a significant role in effectively controlling the overall environmental emissions in the Three Gorges Reservoir area.