SCR脱硝即选择性催化复原技术，是指在催化剂的作用和在氧气存在条件下，NH3优先和NOx发作复原脱除反响，生成氮气和水。

SCR denitration, namely selective catalytic reduction technology, refers to the reduction and removal reaction of NH3 with NOx preferentially under the action of catalyst and the presence of oxygen to generate nitrogen and water.

SCR脱硝的反响中心是脱硝催化剂，SCR催化寿命约为3-5年，2014年我国燃煤电厂开端大范围启用SCR催化剂达成脱硝目的，随着SCR脱硝系统在全国范围内火电和非电范畴催化剂运用量的递增，从今年往后的1-2年，我国将有大量脱硝催化剂面临报废。预测以为，到2025年脱硝催化剂废弃量将到达40.01万立方米，年报废量到达20万吨。

The reaction core of SCR denitration is the denitration catalyst. The service life of SCR catalyst is about 3-5 years. In 2014, China's coal-fired power plants began to use SCR catalyst on a large scale to achieve the denitration goal. With the increasing use of SCR denitration system catalyst in thermal power and non electric fields nationwide, a large number of denitration catalysts will be scrapped in China in the next 1-2 years from this year. It is predicted that by 2025, the waste volume of denitration catalyst will reach 40100 cubic meters, and the annual waste volume will reach 200000 tons.

SCR催化剂一旦到达运用寿命，因其自身组成而被定义为风险固废，而此前企业的处置办法大多为填埋或无害化处置等，对环境仍有一定的毁坏，对资源也是糜费。

Once the service life of SCR catalyst is reached, it is defined as hazardous solid waste due to its own composition. Before, most of the treatment methods of enterprises were landfill or harmless treatment, which still has a certain damage to the environment and a waste of resources.

随着新固废法的实行，迫切请求开展脱硝催化剂再生技术，将来脱硝催化剂再生将愈加向资源化的方向转变，从传统的资源开采、生成、运用、报废的线性工艺，逐渐转变为新催化剂消费、再生、回收的循环工艺，完成原料再应用。另外，脱硝技术也将更多的应用大数据、人工智能等技术完成智能化脱硝，愈加精准地对过程完成管控，以至可以开发除尘、脱硫、脱硝等一体技术。

With the implementation of the new solid waste method, it is urgent to develop the regeneration technology of denitration catalyst. In the future, the regeneration of denitration catalyst will change to the direction of resource utilization, from the traditional linear process of resource exploitation, generation, use and scrapping to the recycling process of new catalyst production, regeneration and recovery, so as to realize the reuse of raw materials. In addition, denitration technology will also make more use of big data, artificial intelligence and other technologies to realize intelligent denitration, control the process more accurately, and even develop integrated technologies such as dust removal, desulfurization and denitration.

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