低溫余熱回收技術是工業廢氣尾氣回收利用重要的手段之一，隨著環保行業被重視，除了傳統的廢水處理雜鹽回收，排放的廢氣治理和煙氣余熱回收也得到關注，常用的低溫余熱回收技術都有哪些種類呢？

Low temperature waste heat recovery technology is one of the important means of industrial waste gas and exhaust gas recovery and utilization. With the attention of the environmental protection industry, in addition to traditional wastewater treatment and salt recovery, the treatment of discharged waste gas and the recovery of flue gas waste heat have also received attention. What are the commonly used types of low temperature waste heat recovery technologies?

　　一、低溫余熱回收技術的意義

1、 The significance of low-temperature waste heat recovery technology

　　隨著環保意識的提高和能源資源的日益減少，低溫煙氣余熱回收技術逐漸受到關注，低溫余熱回收利用技術是一種能夠將工業過程中產生的低溫廢熱轉化為有用能源的方法。這項技術在提高能源利用效率、減少能源消耗以及降低環境污染方面具有重要意義。

With the increasing awareness of environmental protection and the decreasing energy resources, low-temperature flue gas waste heat recovery technology is gradually receiving attention. Low temperature waste heat recovery and utilization technology is a method that can convert low-temperature waste heat generated in industrial processes into useful energy. This technology is of great significance in improving energy utilization efficiency, reducing energy consumption, and reducing environmental pollution.

　　二、低溫余熱回收技術

2、 Low temperature waste heat recovery technology

　　低溫余熱回收按照回收方法不同分為直接回收技術和間接利技術

Low temperature waste heat recovery can be divided into direct recovery technology and indirect benefit technology according to different recovery methods

　　1、直接回收利用技術，過將低溫煙氣與進入爐內的燃料進行交換熱，使燃料被預熱，從而提高燃燒效率，或通過降低煙氣溫度至露點以下，使煙氣中的水蒸氣凝結成水，釋放出潛熱，實現熱能回收。

1. Direct recycling technology involves exchanging heat between low-temperature flue gas and the fuel entering the furnace, preheating the fuel to improve combustion efficiency, or reducing the flue gas temperature below the dew point to condense the water vapor in the flue gas into water, releasing latent heat, and achieving thermal energy recovery.

　　2、間接利用技術，通過煙氣與工藝流體之間的熱量交換，將煙氣中的熱能傳遞給工藝流體，將換熱升溫后的水溶液或其他介質用于廠區供暖或利用余熱發電作為另一種能源二次使用。

2. Indirectly utilizing technology, the heat energy in the flue gas is transferred to the process fluid through heat exchange between the flue gas and the process fluid. The heated water solution or other medium after heat exchange is used for heating in the factory area or for secondary use of waste heat power generation as another energy source.

　　不管是那種余熱回收技術都能做到較好的利用余熱資源，提升企業效率，減少生產熱損耗，降低生產成本，助力企業實現綠色轉型發展。

Regardless of the type of waste heat recovery technology, it can achieve better utilization of waste heat resources, improve enterprise efficiency, reduce production heat loss, lower production costs, and help enterprises achieve green transformation and development.

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