今天，《中国日报》全英文刊发文章介绍太重集团的7.25米捣固焦炉设备。
Executives of Taiyuan Heavy Machinery Group and Jianyuan Coking attend an agreement signing ceremony for the delivery of the stamp-charging coking oven. ZHANG YAOTIAN/FOR CHINA DAILY
Taiyuan Heavy Machinery Group, a leading machine builder in Shanxi province, recently signed an agreement with Jianyuan Coking based in the Otog Banner in the Inner Mongolia autonomous region for the delivery of a large coking oven.
It was a landmark deal for the THMG this year, as the 7.25-meter-high stamp-charging coking oven is the tallest in China so far, breaking the record of 6.8 meters.
"The increase in height does not only mean growth in size and capacity," said Sun Naixin, one of the designers of the oven. "It also means greater efficiency and better performance in energy conservation and environmental protection."
He said the coking industry is an important link between the coal-producing and coal-consuming industries.
Coke, produced from coal, is widely used in the metallurgy and chemical sectors.
"In the context of China's carbon-neutrality strategy, our coking production is gearing up to higher efficiency and lower energy and resource consumption," Sun said. "And the latest large-capacity stamp-charging coking oven is designed to meet that trend."
He said the latest facility has a single-oven coke output of 47.6 metric tons, which is 10 percent more than the 6.8-meter one.
The increase in size and capacity requires the sustained optimization of the oven's carbonization chamber, coal-stamping machine and the coal-conveyance and loading system, according to Ma Lihui, head of the coking research institute at the THMG.
He said the coking process involves coal pulverization, stamping the pulverized coal into blocks and then piling the blocks into coal walls inside the carbonization chamber. "Such techniques are aimed at lifting coking efficiency," Ma said.
In addition to more complicated techniques designed for improving efficiency, the new oven is a comprehensive system. It combines intelligent operations and pollution-control solutions, according to Wu Xiaoqiang, deputy chief of the coking research institute.
"There is a control station with smart connections to all kinds of automatic devices for production," Wu said. "This has made 'push-button' operations possible."
In addition, the oven has an intelligent emission and dust-absorbing system, which can turn exhaust fumes into reusable resources.
The THMG evolved from the Taiyuan Heavy Machinery Factory, founded in 1950. It was the first self-developed heavy machinery manufacturer in the People's Republic of China.
The THMG is now a major equipment and solutions provider for enterprises across a wide range of industries including metallurgy, mining, energy, new materials, transportation, chemicals and aerospace.
9月15日，中国冶金报头版以《太重7.25米捣固焦炉研制难在哪儿？》为题，重点报道太重集团聚焦“双碳”目标，充分发挥高端装备制造领域的丰富经验和技术优势，成功研制7.25米捣固焦炉设备，打破我国此前最高6.8米的纪录，成为国内最大的智能捣固焦炉设备。
近日，太重集团与内蒙古鄂托克旗建元煤焦化有限责任公司签署了7.25米捣固焦炉设备研制订单。这将是太重为该公司提供的第7套分体捣固焦炉设备。7.25米捣固焦炉设备也将打破我国此前最高6.8米的纪录，成为国内最大的智能捣固焦炉设备。
突破煤饼高宽比极限
太重此次研制的7.25米捣固焦炉单炉产量达到47.6吨，相比目前国内最大的6.8米捣固焦炉产量提高了近10%。“炉型大了意味着它更加节能环保、效率更高。但相应带来的难题便是煤饼的高宽比之大前所未有，对稳定性、安全性的要求极高。”太重7.25米捣固焦炉主任设计师孙乃鑫说。
煤饼高宽比一直是焦炉设备大型化发展面临的最大挑战。煤饼指的是在炼焦过程中，把粉末状的焦煤压实压紧，使之成为一堵可以经得住“推敲”的墙体。高宽比是指这堵煤墙的高度与宽度的比例，宽度0.5米是不可变的，因此，比例越大，就说明这堵墙越高。
“这次7.25米捣固焦炉所生产的煤墙就比目前国内最大的6.8米捣固焦炉高了48厘米。不要小看这48厘米，它意味着煤饼的高宽比将再次突破极限。”太重技术中心焦化所所长马立辉讲道。
为解决这一难题，太重的设计团队在捣固机和装煤系统上持续优化改进，提升捣固机捣固效率，加强捣固机有效做功转化，配套设计装煤系统，充分吸收捣固机对装煤车的冲击，确保装煤过程平稳顺畅。通过不断捣固，把这块又高又长而且很窄的煤墙压紧压实，再通过对设备优化升级，减少这堵煤墙在推进过程中的振动与摩擦，使之在没有任何辅助力量的帮助下安全顺利进入炭化室。
此次，太重为客户量身打造了焦化全流程系统优化计划，在设备设计之初便从焦化行业的本质入手，开展清洁生产、源头控制，实现本质绿色发展。孙乃鑫表示：“淘汰落后焦炉、推动焦化行业转型升级是落实国家绿色低碳环保政策的必然要求。我们首先要满足工艺要求，保证生产稳定顺行，让稳定顺行成为最大的安全环保措施；其次要完善工艺，尽量从工艺本身解决安全环保节能问题，避免被动的末端治理。”
为设备装上“智慧大脑”
此前，太重已拥有丰富的智能焦炉设备设计制造经验和诸多成功应用案例。此次为客户量身定制的7.25米焦炉设备将助力客户在“用煤不见煤”的基础上实现“炼焦不见烟”。
“焦炉机、焦侧炉头烟突发性强、扩散速度快，而且烟尘量大、成分复杂、温度高，很像做饭时产生的油烟。而我们的设备就相当于为焦炉的机、焦两侧各安装了一台大型抽油烟机。”太重技术中心焦化所副所长仵晓强做出形象比喻。太重3年前已为旗下所有的焦炉设备安装了绿色节能高效环保除尘系统，目前这项技术已非常成熟。太重也因此成为国内外率先掌握焦炉炉头烟特性的企业，高负压抽烟罩技术还获得国家发明专利授权。该技术创新集成了抽烟+储烟的功能，可以对焦炉逸散物进行点对点捕集，还可以根据烟尘量大小智能调节抽吸力，在满足环保要求的同时降低能耗，让炼焦现场更清洁、生产更绿色、碳排放更少。
不仅如此，这套焦炉设备还拥有一颗“智慧大脑”。它可以通过作业管理及炉号识别系统传送作业计划和地址信号，让车辆实现自动走行、自动定位等无人化智能操作，使客户真正进入“无人操作”时代。此外，设计团队还为客户预留了太重独有的“一键炼焦”端口，方便客户随时提档升级。
“这套设备不仅将大大降低操作人员的劳动强度，而且会使我们的生产安全和产出效率得到大幅提高。”建元煤焦化有限责任公司的工作人员兴奋地说，“以前的焦炉设备都需要人工操作，而智能焦炉设备只需一人监管。同时，由于它的定位和行走比人工更加精准，而且不会疲倦、不会受到人为因素的干扰，因此更安全、高效。”
据悉，在焦炉设备领域，太重现已形成顶装焦炉成套设备、捣固焦炉成套设备、清洁型热回收焦炉成套设备三大系列，实现了从3.6米到7.6米焦炉型号全覆盖，设计水平、制造质量、投产运行过程均得到了用户认可，在安全、稳定、智能、环保等方面均达到国际领先水平，产品远销亚欧地区。
