One step closer to CCCC! The medium-pressure column in Rongxin Chemical’s methanol distillation renovation project was successfully lifted into place in one go
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On January 13, 2015, the medium-pressure tower T234, one of the large-scale towers in the methanol distillation energy-saving renovation project carried out by Inner Mongolia Rongxin Chemical Co., Ltd., was successfully lifted into place in one go, marking a crucial milestone in the completion of this project. The T234 medium-pressure tower is 64 meters tall and 3.4 meters in diameter, with a total lifting weight of 300 tons. For the lifting operation, an 800-ton crawler crane from Da Ji Company is used as the main crane, while a 260-ton crawler crane is used for assisting with the lift. The hoisting and installation of the medium-voltage tower marks the completion of all tasks related to equipment installation, pipeline welding, power supply to cabinets, and individual testing of motors prior to the project’s shutdown for maintenance; this brings the project one step closer to completion. The first-phase methanol distillation unit of Inner Mongolia Rongxin Chemical Company adopts a three-tank process. The consumption of distillation steam is relatively high, with an actual consumption of around 1.2 tons per ton of methanol produced. Additionally, due to the effects of the catalyst at its end-of-life stage, the impurity content in the crude methanol exceeds the specified levels; as a result, the carbonyl compound content in the methanol product at this stage is high. In light of the actual operating conditions of the first-stage distillation unit, energy-saving upgrades were carried out on it. By modifying the process flow and some of the equipment, adding 1 medium-pressure column and 1 methanol ethanol recovery column along with associated heat exchangers, pumps, etc., the hierarchical utilization of energy within the system is improved; the original \"double-effect distillation\" system is transformed into a \"triple-effect distillation\" system, thereby achieving energy savings and reduced consumption. At the same time, by adding a non-condensable gas scrubber, methanol in the non-condensable gas from the pre-tower is recovered, thereby increasing the methanol yield. The total investment for this project is 69.92 million yuan, all of which is funded from own capital. The first phase of Inner Mongolia Rongxin Chemical uses multi-nozzle water-coal slurry gasification to produce 3,000 tons of methanol per day. Rongxin Chemical’s methanol production facility is located in the Sanyangliang Industrial Park, Dalaat Banner, Ordos City, Inner Mongolia. It covers an area of approximately 1,300 mu, and the entire production line includes units for air separation, gasification, shift reaction, low-temperature methanol washing, sulfur recovery, methanol synthesis, distillation, as well as various utility systems. Construction of the facility began in 2012; it started producing qualified methanol in July 2014, and passed the environmental compliance inspection upon completion in 2015. It is reported that Inner Mongolia Rongxin Chemical Co., Ltd. is affiliated with Yankuang Group Yanzhou Coal Industry Ordos Energy Chemical Co., Ltd. There are currently the “Phase 1 project of 1.8 million tons of coal-to-methanol production and 600,000 tons of methanol production” as well as the “Circular economy demonstration project for 400,000 tons of coal-to-ethylene glycol production and 300,000 tons of polydimethyl ether production per year”.
【Frontiers of HaiChuan Technology】The Institute of Process Engineering, Chinese Academy of Sciences has developed metal-non-metal substitutional solid solutions https://bbs.hcbbs.com/thread-5678794-1-1.html (Source: HaiChuan Chemical Industry Forum [Chemical Currents in HaiChuan])
Why build photovoltaic power plants at such high altitudes? What are the differences in equipment and technology between photovoltaic projects in ultra-high altitude areas and those in lower altitude areas? Generally speaking, photovoltaic power plants are built in flat plains, where both construction and the efficiency of photoelectric conversion are better. In this plateau region of Tibet, with its high mountains and steep slopes, it is quite difficult to find an area that is relatively flat. The second-phase project uses a new generation of photovoltaic modules, which, compared to those used in the first phase, offer a 7.5% higher photoelectric conversion efficiency. Moreover, we can consider it as a “double-sided battery” – not only can the front side generate electricity, but the back side also has photovoltaic panels that can generate power from the light reflected from the ground; its efficiency in generating electricity is even higher when it snows. Compared to single-sided photovoltaic panels, its power generation efficiency has increased by 20%. The entire photovoltaic power plant has a service life of over 25 years; even in such harsh environments at altitudes of around 5,200 meters, it can withstand winds of force 12 as well as temperatures as low as minus 40 degrees Celsius. The photovoltaic supports here are about as tall as a person. With this combination of solar power generation and grazing, electricity can be produced above while grazing is possible below. In particular, large-area solar panels block part of the sunlight, reducing the evaporation of water in the soil. Winter has now arrived, and although these grasses have turned yellow and withered, the vegetation remains very lush.
【Ten Years of Rapid Development in Chemical Processing Equipment】The independently developed APS3.0 system has been fully implemented in 27 refineries operated by Sinopec from 2174 to 2025. https://bbs.hcbbs.com/thread-5678853-1-1.html (Source: Haichuan Chemical Industry Forum [Chemical Currents])