Spring is getting deeper, and greenery can be seen everywhere in southern Shanxi.
Deep in the Taiyue Mountains, Shanxi Yongxin Coal Coking Co., Ltd. (hereinafter referred to as "Yongxin Coking"), green and tall pines surround the coking devices that stand tall in the blue sky. Against the backdrop of white clouds, it becomes even more refreshing.
When you are in the factory, you can’t see the flying smoke and smell the pungent odor. It completely subverts and reshapes the thinking and inertia of traditional coal coking enterprises. This is the most important thing about this "green factory". Intuitive visual image.
Walking into each factory, each advanced environmental protection facility and equipment operates in parallel and efficiently, which is the best explanation for Yongxin Coking’s green development path.
Guided by green development
How can Yongxin Coking shake off its “dust”? The answer is not hard to find.
Walking into the factory's intelligent anti-explosion control room, a group of employees are monitoring operations in front of the computer. The real-time display on the screen wall shows that the inspection robot is shuttling back and forth in the coke oven basement and synchronously transmits the detection data to In the control room, the "safety index" of coke oven production is under control.
The integrated intelligent platform for unorganized emission control and control that Yongxin people are proud of is indeed well-deserved. Here, 23 high-efficiency fog cannons are installed in the fully enclosed coal char storage greenhouse. The fog cannons use three-stage linkage to automatically control dust during operations. 24 sets of high-efficiency dry mist curtains installed at the entrance and exit of the greenhouse use infrared induction to automatically control dust escape; There are 28 dust detection facilities installed in the factory. The detection facilities and sweepers transmit dust alarm signals through GPS, which can directly command the sweepers to control dust in the factory.
It is worth mentioning that the air quality data of the factory area is also connected to the data of various air quality monitoring points in Linfen City in real time. Data comparison shows that the air quality index of the factory area is better than the city's average level.
These are just the tip of the iceberg of this "green factory".
As the core unit of the industrial manufacturing process, the green factory is the core object for practicing the concept of green development and realizing green transformation and upgrading, and is also an important starting point for green transformation. As a circular economy private enterprise that integrates coking, chemical product recovery, coke oven gas to methanol, and methanol purge gas to produce synthetic ammonia, Yongxin Coking has always adhered to the principle of "creating a resource-saving and environment-friendly modern coal mine" for many years. Chemical enterprises and make unremitting efforts" green development concept. Niu Ruping, general manager of the company, introduced that since the Ministry of Industry and Information Technology organized the green manufacturing list recommendation work in 2017, the company has actively promoted the implementation of various environmental protection and energy-saving projects and established a green factory management team. According to the "General Principles of Green Factory Evaluation" and "Green Factory Evaluation" Requirements" to improve and improve the level of green manufacturing item by item. "In recent years, a total of 670 million yuan has been invested in environmental protection and energy conservation, and more than 30 technical transformation and construction projects of environmental protection facilities have been implemented to high standards."
On October 29, 2020, Yongxin Coking was successfully selected as a national green factory, becoming the only independent coking company in the province to win this honor. "This is a commendation and affirmation of our unswerving and persistent hard work in safety, environmental protection, energy conservation, quality and other aspects over the years." Niu Ruping said.
Supported by technological innovation
The traditional coking industry has high energy consumption, high emissions, and high pollution, and there is huge potential for energy-saving and carbon-reducing transformation and upgrading.
For Yongxin Coking, there are numerous applications of new technologies and new processes -
Through dry quenching and dry quenching power generation projects, the cost has been reduced in one fell swoop The level of energy consumption of the factory. Data shows that in 2016 and 2019, the company built and put into operation a 1.2 million tons/year coking dry quenching waste heat power generation and a 600,000 tons/year coking dry quenching device, saving 86,000 tons of standard coal per year.
The implementation of "zero discharge" technical transformation of wastewater in the factory area has also achieved remarkable results. As the first high-concentrated brine treatment device with a complete process chain in China, the zero-discharge coking wastewater project can save 439,200 tons of water per year, and the zero-discharge device for chemical water and concentrated brine can save 558,400 tons of water per year.
Through the implementation of technological transformation for acid production from coking desulfurization waste liquid, the operating parameters and stability of the entire unit are at the forefront of similar units in the country.
The waste liquid acid production project realizes the recycling of sulfur resources, which fundamentally solves the problems of sulfur resource waste in the traditional desulfurization process and secondary environmental pollution of desulfurization by-salt waste liquid. The sulfuric acid produced is used as the raw material for deamination of coke oven gas to produce ammonium sulfate, allowing sulfur resources to be effectively recycled.
Using advanced 5G communication technology, a 5G robot intelligent safety inspection project was developed, which realized intermittent intelligent inspection of the coke oven bottom and real-time detection and alarm of toxic and harmful gases, greatly reducing the number of personnel in dangerous areas. time. In January 2022, this technology was awarded a utility model patent by the State Intellectual Property Office.
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Groups of data comparisons objectively reveal the benefits that technological innovation brings to Yongxin Coking in terms of safety, environmental protection, energy conservation, and quality.
Using technological innovation to drive green industrial development is the key to promoting high-quality economic development. Over the years, Yongxin Coking has started from the source to carry out green transformation of the extensive production model, and has successively implemented 1.2 million tons/year coking dry quenching waste heat power generation, coke oven flue gas white plume control and other high-emission and ultra-low desulfurization and denitrification Emissions transformation, coke oven unorganized dust control transformation, VOCs control, 600,000 tons/year coking dry quenching, acid production from desulfurization waste liquid, zero discharge of high-salt inorganic wastewater, zero discharge of coking wastewater, air six-parameter micro monitoring station, dust And VOCs unorganized emission management, control and treatment integrated intelligent platform, leakage detection and repair (LDAR) technology and other advanced, practical and effective projects have achieved a truly gasless, odorless, clean, bright and enhanced factory area. enhance the market competitiveness of enterprises.
With circular development as the core
The comprehensive utilization of resources is regarded as an effective means to promote the fundamental transformation of resource utilization methods, vigorously save and intensively utilize energy resources, and develop a circular economy. It is an effective means to implement industrial green A solid guarantee for development requirements.
As a pilot enterprise for circular economy in Shanxi Province, Yongxin Coking has long been committed to building an integrated green low-carbon recycling coal chemical enterprise. Over the years, it has continued to invest funds, continuously improve the industrial chain, and strive to achieve "eating and drying". "Press cleanly" and achieve "zero discharge" of solid waste and wastewater, creating a complete industrial chain that closely connects upstream and downstream.
In the upstream, in order to facilitate the transportation of clean coal and reduce the impact of the transportation process on the environment, the company invested in the construction of the Yongxin Railway Special Line; in the downstream, it extended the industrial chain through power generation, methanol, and synthetic ammonia, forming a " The complete industrial chain of "coal mining-coking-power generation-methanol-synthetic ammonia", through the construction of circular economy, has achieved zero wastewater discharge, full recycling of solid waste, and ultra-low flue gas emissions.
In order to further promote the development of the entire coking industry chain, Yongxin Coking also vigorously develops the carbon-based new material industry. It is currently implementing the development of microcrystalline coke, carbazole, anthraquinone, Yonggu Purple and other series downstream of coal tar. The products will create a new pattern of circular economy industry of coal coking materials that "uses chemicals to prepare coke and chemical materials simultaneously".
Traditional advantageous industries are the "ballast stone" that stabilizes Linfen City's economic operation. The Economic Work Conference of the Municipal Party Committee at the beginning of this year pointed out that industry must stabilize and expand, improve quality and efficiency, and traditional advantageous industries must strengthen chains and forge long boards to benchmark "dual-line" and high-end low-carbon development.
As one of the benchmarks for the transformation of coking enterprises, Yongxin Coking has strong strength and a dominant position in the industrial chain. It is undoubtedly a veritable "chain owner" enterprise. The full play of its leading and supporting role will help upstream and downstream enterprises in the industrial cluster to benefit widely, thus driving regional economic development.
Green is the foundation for high-quality industrial development. Yongxin Coking is a bright green light for Linfen City to build a high-quality development modern industrial system. (Sun Zonglin and Wang Xiaogeng)
Original title: Painting a new chapter with "green" - Analysis of the green development path of Shanxi Yongxin Coal Coking Co., Ltd.