工业废热回收利用大面广,使用技术的方式,设备众多,但也有一些合适的条件下,应该根据不同类型的企业剩余热量,温度、热量、结合生产条件、工艺流程、内部和外部的能源需求,选择适当的利用余热,从而实现降低能耗的目的,提率。例如:余热梯度利用技术，从热力学的角度来看，能源经过多次使用，会产生损耗，因此，使用的终会显得效率低下，但当冷热负荷条件存在时，余热梯度的利用是非常必要的。
Industrial waste heat recovery has a wide range of uses, technology and equipment, but there are also some suitable conditions, according to different types of enterprise residual heat, temperature, heat, combined with production conditions, process flow, internal and external energy demand, choose appropriate use of waste heat, so as to achieve the purpose of reducing energy consumption and improving efficiency. For example, the technology of waste heat gradient utilization, from the thermodynamic point of view, energy will be lost after many times of use, therefore, the ultimate use will appear inefficient, but when the cold and heat load conditions exist, the utilization of waste heat gradient is very necessary.
废热回收和利用是循环的过程中包含的热能气态(如高温烟气)、液态(如冷却水)和固体(如各种耐高温钢产品)在工业生产过程中排放高于环境温度,并利用它。据统计，我国工业能源消费约有50%是不使用的，而是直接以各种形式浪费的余热，回收率高达60%以上。我国余热资源平均回收率仅为30%左右，落后于国际水平10~20个百分点。
Waste heat recovery and utilization is the process of recycling, including heat energy gaseous (such as high temperature flue gas), liquid (such as cooling water) and solid (such as various high temperature steel products) in the industrial production process emissions higher than the environmental temperature, and use it. According to statistics, about 50% of China's industrial energy consumption is not used, but waste heat directly in various forms, the recovery rate is as high as 60%. The average recovery rate of waste heat resources in China is only about 30%, which lags behind the international advanced level by 10 to 20 percentage points.
济南空压机
Jinan air compressor
回收余热的方法有很多。综合利用余热效果;其次,直接利用;第三种是间接利用(用蒸汽发电)。同时，不同质量和工艺要求的能源也不同。在这种情况下，企业应因地制宜，提前进行能耗分析和能源体系评价。在实践中，一些企业没有按照这些原则认真分析，难以取得良好的效果。例如:有的企业高温焦炭余热不回收，而是在使用低温低压余热;一些企业利用煤矸石发电，而煤炭尚未开采。高质量的能源没有得到充分利用，所以我们在追求低质量的热的利用，而低质量的热的利用是没有效率的。
There are many ways to recover waste heat. Comprehensive utilization of waste heat has the best effect; secondly, direct utilization; the third is indirect utilization (steam power generation). At the same time, different quality and process requirements of energy are also different. In this case, enterprises should make energy consumption analysis and energy system evaluation in advance according to local conditions. In practice, some enterprises have not carefully analyzed these principles, and it is difficult to achieve good results. For example, some enterprises do not recycle high-temperature coke waste heat, but use low-temperature and low-pressure waste heat; some enterprises use coal gangue to generate electricity, while high-quality coal has not yet been mined. High-quality energy is not fully utilized, so we are pursuing low-quality heat utilization, and low-quality heat utilization is inefficient.
目前，在高耗能行业，新建装配线余热发电空间有限，整个行业都面临产能过剩的问题，因此，开发相应的余热利用是必不可少的。高能耗企业需要从政策导向转向自我导向，提高经济效益，选择合适的余热回收利用方式。以上是济南空压机厂家为大家整理的相关内容，想要了解更多内容的，欢迎访问我们网站：http://www.jnkbjx.com
At present, in the high energy-consuming industry, the space of waste heat power generation in the newly built assembly line is limited, and the whole industry is facing the problem of excess capacity. Therefore, it is necessary to develop the corresponding waste heat utilization. High-energy-consuming enterprises need to change from policy-oriented to self-oriented, improve economic efficiency, and select appropriate ways of waste heat recovery and utilization. The above is the related content that Jinan Air Compressor Factory sorted out for you. For more information, please visit our website: http://www.jnkbjx.com.
