生物質熱風爐燃燒調整的方法有哪些

文章时间:2018-11-20 01:27:51   浏览次数:1259

1.生物質在振動爐排上成都收賬燃燒過程.生物質成都找人公司燃燒通常可以分為三個階段,即預熱起燃階段、揮發分燃燒階段、炭燃燒階段。生物質在振動爐排上成都收賬燃燒過程分為預熱幹燥區、燃燒區和燃盡區,這可以與振動爐排收賬高、中和低端相對應。根據各區成都找人公司燃燒特點,各區需要的風量有差別,預熱幹燥區和燃盡區的風量少一些,燃燒區的風量要大一些。燃料顆粒在振動爐排熱風爐中燃燒可以分為兩種類型:顆粒大的在爐排上燃燒,在氣力播撒的過程中,顆粒特別小的在爐排上部空間發生懸浮燃燒。
1. The combustion process of biomass on vibrating grate. The combustion of biomass can be divided into three stages: preheating ignition stage, volatile combustion stage and carbon combustion stage. The combustion process of biomass on the vibrating grate can be divided into preheating and drying zone, combustion zone and burnout zone, which can correspond to the high, middle and low end of the vibrating grate. According to the combustion characteristics of each zone, the air volume needed in each zone is different. The air volume in the preheating drying zone and the burnout zone is less, and the air volume in the combustion zone is larger. The combustion of fuel particles in the hot blast stove with vibrating grate can be divided into two types: the combustion of large particles on the grate and the suspension combustion of small particles in the upper space of the grate during pneumatic seeding. 2.生物質在爐排上完全燃燒的條件
2. the c环氧地坪ondition of biomass burning completely on the grate.
爐內良好燃燒的標志就是在爐內不結渣的前提下,盡可能接近完全燃燒,同時保證較快的燃燒速度,得到最高的燃燒效率。
The sign of good combustion in the furnace is to approach complete combustion as close as possible without slagging in the furnace, while ensuring faster combustion speed and achieving the highest combustion efficiency.
(1)供應充足而有合適的空氣量
(1) adequate supply and adequate air volume.
如果過量空氣系數過小,即空氣量供應不足,會增大固體不完全燃燒熱損失q4和可燃氣體不完全燃燒熱損失q3,使燃燒效率降低;如果過量空氣系數過大,則會降低爐膛溫度,增加不完全燃燒熱損失。最佳的過量空氣系數使q2+q3+q4之和為最小值。
If印花地坪 the excess air coefficient is too small, that is, insufficient air supply, it will increase the heat loss Q4 of solid incomplete combustion and the heat loss Q3 of combustible gas incomplete combustion, which will reduce the combustion efficiency; if the excess air coefficient is too large, it will reduce the furnace temperature and increase the heat loss of incomplete combustion. The best excess air coefficient makes the sum of q2+q3+q4 minimum.
(2)適當提高爐溫
(2) raise the furnace temperature appropriately.
根據阿累尼烏斯定律,燃燒反應速度與溫度成指數關系。在保證爐膛不結渣的前提下,盡量提高爐膛溫度。
According to Arrhenius's law, the rate of combustion reaction is exponentially related to temperature. In order to ensure furnace hearth not slagging, raise furnace temperature as much as possible.
(3)爐膛內良好的擾動和混合
(3) good disturbance and mixing in furnace.
在著火和燃燒階段,要保證空氣和燃料的充分混合,在燃盡階段,要加強擾動混合。
In the stage of ignition and combustion, the full mixing of air and fuel should be ensured, and in the stage of burnout, the disturbance mixing should be strengthened.
(4)燃料在爐排上和爐膛中有足夠的停留時間
(4) fuel has sufficient residence time in the grate and in the furnace.
(5)保持合理的火焰前沿位置。火焰前沿應該位於高端爐排與中部爐排的之間區域,火焰在爐排上的充滿度好。
(5) maintain a reasonable position of the flame front. The flame front should be located between the high-end grate and the middle grate, and the flame fills well on the grate.