加熱質(zhì)量好。加熱時(shí)介質(zhì)出爐溫度需符合工藝要求，防止局部過(guò)熱出現(xiàn)結(jié)焦、結(jié)炭或危險(xiǎn)。

燃料消耗低。站場(chǎng)用加熱爐的能量消耗有10～15％消耗于爐子上，節(jié)省的燃料對(duì)降低單位成本和節(jié)約能源都有重要意義。

The quality of heating is good. The heating temperature of the medium should meet the requirements of the process, preventing the local overheating from coking, carbon or explosion.  

Fuel cumption is low. The energy cumption of the reheating furnace in the station is 10 ~ 15% on the furnace. The fuel saving is of great significance to reducing unit cost and saving energy.

在擴(kuò)散燃燒時(shí)，火焰的形狀是長(zhǎng)矩形，火焰內(nèi)部是燃料氣，外部是助燃空氣，燃料氣與空氣的混合是依靠擴(kuò)散方式進(jìn)行。當(dāng)開(kāi)始預(yù)混空氣后，火焰的形狀開(kāi)始發(fā)生變化.

In diffusion combustion, the shape of the flame is long rectangle, the fuel inside the flame is external, the external combustion air is, the mixing of fuel gas and air depends on the diffusion mode. When the air is premixed, the shape of the flame begins to change.

按爐溫分布，爐膛沿長(zhǎng)度方向分為預(yù)熱段、加熱段和均熱段。進(jìn)料端爐溫較低為預(yù)熱段，其作用在于利用爐氣熱量，以提高爐子的熱效率。加熱段為主要供熱段，爐氣溫度較高，以利于實(shí)現(xiàn)快速加熱。

According to the distribution of furnace temperature, the furnace is divided into preheating section, heating section and uniform heating section along the length direction.

The lower temperature of the feed end is the preheating section, and its function is to increase the heat efficiency of the furnace by utilizing the heat of the furnace gas.

The heating section is the main heating section, and the furnace gas temperature is relatively high, which is conducive to rapid heating.