For the development of good practice, toward the goal of day and night, Xinda green amazing leap!

Recently, Hebei Provincial Department of Ecology and Environment issued A Notice on the adjustment of the performance levels of some enterprises, Jihuan Atmospheric Letter [2022] No. 1485, which clarified that Hebei Xinda Iron and Steel Group Co., LTD. 's environmental performance grade was adjusted from B- to A. This marks another milestone step on the road of green and high-quality development of Xinda!

It is reported that the environmental performance classification of key industries is an important basis for the implementation of differentiated management and control during the emergency emission reduction of heavy pollution weather. According to the principle of multi-discharge and multi-limit, less discharge and less limit, no limit on discharge, performance classification is divided into A, B (including B-), C, D and other levels. A-level enterprises can independently take emergency emission reduction measures during heavy pollution weather, without limitation. Class B, C and D enterprises shall limit or suspend production to reduce emissions in proportion to their performance levels.

"In the fiery furnace, the backbone of economic and social development is formed; In the clear water and blue sky, take up the banner of ecological and environmental responsibility." Hebei Xinda Iron and Steel belongs to "long process steel" enterprise, with the typical characteristics of long process, many pollution production links, difficult control. Because it is difficult, so great; But it is more glorious because it is difficult! With the high pressure situation of going straight to the problem and the rigid constraint of green development, the company has set no upper limit on the ultra-low transformation investment, no matter the cost, and the accumulated investment has reached 5.4 billion yuan to implement the source emission reduction, process control and end treatment, and ensure the ultra-low emission of the whole process with the support of the most advanced technology and equipment. On November 29, the company completed the ultra-low emission publicity on the official website of the China Iron and Steel Association. On December 23, a verification and review team composed of Hebei Ecological Environment Emergency and Heavy Pollution Weather Warning Center, Tangshan Bureau of Ecological Environment and related industry experts conducted on-site inspection of the company. After verification, Hebei Xinda Steel's organized emission, unorganized emission, monitoring and monitoring level, environmental management level, mode of transportation, transportation supervision and other aspects meet the long-term process steel performance A-level requirements.

Take "green" as a mission system to promote energy conservation and emission reduction

The most advanced technology support, to ensure the whole process of ultra-low emissions. The company's organized pollution control effect is particularly significant, sintering machine head using four electric field electrostatic precipitator +SDA semi-dry desulfurization + bag dust collector +SCR denitration process, supporting sintering machine flue gas internal circulation process; Four electric field electrostatic precipitator + lime gypsum desulfurization + wet electric dust removal was used for pellet roasting. SDS dry desulphurization + bag dust removal system is adopted in blast furnace hot blast furnace. The process of "SDS baking soda dry desulfurization + coated filter material bag dust collector + low-temperature SCR denitration" is adopted in the flue gas treatment of strip steel, H-beam steel and bar heat treatment furnace. LT dry dust removal process is adopted for primary flue gas of converter. The finishing mill of steel rolling production line is equipped with plastic burning plate dust removal. The high efficiency coated cloth bag dust collector is adopted for the dust removal at the iron discharge yard and ore trough of blast furnace to meet the requirements of ultra-low emission organized control.

Since 2020, the company has implemented the treatment of unorganized discharge points item by item, and all materials are stored in the shed. The interior part of the shed is hawk-eye linkage, and fog cannon and spray dust suppression device are used for dust suppression. The outlet of the shed is equipped with high-pressure wheels and body washing devices. The secondary flue gas dust collector of converter is expanded and reformed, and the filter material of film-coated cloth bag dust collector is adopted, and the top suction triple dust collector is equipped to control the unorganized discharge of the steelmaking workshop. Implementing projects such as full recovery of equalized pressure gas from blast furnace and backblowing of gas from steel rolling heating furnace to reduce carbon monoxide emission; Dust removal ash, desulphurization ash, quick lime and other powdery materials are all stored in closed silo and storage tank, and pneumatic conveying and suction and discharge tank truck are used for closed conveying. Effective treatment facilities are set up for all the non-organized dust producing points in the storage, conveying and production process, so as to meet the requirements of ultra-low emission and non-organization control.

Intelligent centralized control, to achieve accurate control of the environment. Distributed control system (DCS) is installed in the main environmental protection facilities and production facilities of the company to record the operation of environmental protection facilities and the main parameters of the related production process. 149 TSP concentration monitors, 48 micro-stations for environmental air quality monitoring and 27 sets of high-definition video monitoring have been installed to implement all-round, 24/7 accurate monitoring. More than 28 million yuan has been invested in the establishment of an environmental protection intelligent control center, and an environmental governance system featuring "one map management, one eye monitoring and one net detection" has been realized.

China has invested in the largest metro rail project in North China to realize comprehensive clean transportation. The bulk materials and products of the company are all transported by rail + electric heavy truck + new energy or national 6 or above emission standard vehicles. Tiandao Warehousing and Logistics Port has invested a huge amount of money to build three central functional areas: bulk material storage and transportation center, intelligent trading center for industrial products and storage center for finished steel products, covering an area of more than 2,300 mu, with an annual designed throughput of 35 million tons. The total length of the railway special track is 27 kilometers, the finished product platform is 170,000 square meters, 2 tipper, supporting environmental protection closed storage, silo, mixed batching and pipe transportation system, the railway transportation proportion will reach 85%, reducing carbon emissions of 1 million tons per year. 189 National sixth transport vehicles and 193 pure electric replacement tractors have been purchased and put into use. In terms of transportation supervision, the company has 14 sets of access control and video monitoring systems, which can identify the license plate number of transport vehicles, emission stage, vehicle list or driving license and other information, and integrate the access control system with the metering system. All clean transportation data are connected to the environmental protection control platform, and real-time display of metering information, vehicle information, vehicle entering pictures, and weight list information.

"Green" as a landscape to promote the rapid environmental improvement

"Goldfish are kept in the wastewater pond, yaks live at the gate of the factory, sika deer are kept in the bushes, peacocks are displayed and rabbits are raced." This scene deeply rooted in the hearts of the people, but more hard-won, this is the best proof of Hebei Xinda Iron and Steel in environmental governance results.

The company follows the law of nature, high standard implementation of plant greening, road hardening and workshop landscaping and lighting. With an investment of 180 million yuan, the production plant will be built into a national AAA level industrial tourism scenic spot, the construction of "green steel" ecological tourist area and other 5 series of 18 scenic spots, with 120 thousand square meters of forest green space, more than 500 thousand trees and shrubs scattered, a different style of characteristic garden landscape spring up. Into the big beauty Xin Da, there are green, everywhere there is scenery, landscape unity, laughter, harmonious coexistence.

"Green" as the background color to let the steel plant into the city

A valuable and responsible urban steel mill should not only provide high-quality steel and services for the society, but also realize functional complementarity and mutual integration with the city. By vigorously developing green products, developing green industries and exporting green technologies, Xinda has helped the whole society to improve the level of green development and become a "good neighbor" and "good friend" of citizens.

We will carry out recycling and utilization projects for gas, steam, industrial solid waste, and industrial sewage to open up the joints and meridians of green development and make great progress in the circular economy. Two groups of 100MW high temperature and ultra-high pressure, one 110MW ultra-high temperature and sub-critical gas generating unit, two steam waste heat generating units, and 330KW photovoltaic power generation system were built, and the self-generating rate reached 75%. Completed the first green electricity transaction, offsetting 3443.6 tons of carbon dioxide emissions, becoming the first large steel enterprise in China to enter the green electricity market. In addition to generating its own electricity, industrial steam also provides heat to surrounding communities, reducing the use of coal and electricity. Sewage treatment plant daily purification of 20,000 tons of sewage, water purification indicators have reached the national certification of drinking standards, in the local iron and steel enterprises to take the lead in the recycling of all production and domestic sewage. Industrial solid waste resource treatment plant for slag, steel slag, desulfurized gypsum, tailings sand and other industrial wastes for secondary utilization, annual processing of 4.5 million tons, the output of slag powder and other high-performance mineral admixtures, create new social value for the city.

conclusion

Grade A is the highest level of performance rating, representing the industry's best level of environmental governance! Xinda can successfully achieve the goal of achieving A in environmental protection, with all the cadres and staff of the "horizontal under one heart" of governance courage, fight is to "commit the most difficult and map the most far" spirit of fighting, by the firm perseverance of "not to win all". During the creation of A, the company has been successively awarded "Environmental and Social responsibility Enterprise", "Steel green development benchmark Enterprise", "2022 National water efficiency leader", "Hebei Province waste free Enterprise (factory)", continuously showing Xinda's new image of green and high-quality development to the industry and the society!

Creating A is only the beginning of continuous improvement. It is important to maintain normalization and upgrade iteratively in the follow-up. Hebei Xinda Group will continue to consolidate its responsibilities, adhere to standards, requirements and inspections, strengthen management and elaborate measures, and continuously increase its efforts in project construction, process control and site improvement. It aims to raise environmental performance and draw up a new China-style modern Xinda landscape with higher environmental standards. Show greater responsibility and achievements in leading the province's industrial enterprises in deep emission reduction, green transformation and high-quality development, and make new and greater contributions to accelerating the construction of a strong economic province and a beautiful Hebei!