无锡科达脚手架厂【官网】主营:脚手架、移动脚手架、门式脚手架、梯形脚手架

无锡科达脚手架厂

示例图片三
网站首页 > 新闻资讯 > 时事新闻

降低天然气热风炉耗气量可以这么做!

2018-11-29 09:28:16 无锡科达脚手架厂 阅读

燃气热风炉顾名思义使用气体燃料进行燃烧,该设备相对比较简单、操作便捷。随着现在严查环保成都收账力度不断加大,许多厂家将燃煤热风炉燃气热风炉,这样使用不仅节能减排,同时还环保可靠,那大家知道在使用时燃气热风炉耗气量怎样计算吗?怎么做才能降低天然气热风炉耗气量进而降低成本呢?

Gas hot blast stove uses gas fuel as its name implies. The equipment is relatively simple and easy to operate. With the increasing efforts to strictly check environmental protection, many manufacturers will change coal-fired hot stoves to gas-fired hot stoves. In this way, not only energy saving and emission reduction, but also environmental protection is reliable. Do you know how to calculate the gas consumption of gas-fired hot stoves in use? What can be done to reduce the gas consumption of natural gas hot stoves and thereby reduce costs? 天然气热风炉耗气量成都找人公司计算:1、确定热风炉成都收账容量2、确定受热面热阻3、根据上述两个条件确定热损失。4、确定热损失之后即得到热效率5、得到热效率之后,根据总容量乘设计参数得出总热焓6、然后用燃气收账总热焓乘锅炉热效率,得到成都找人公司数值再除介质的总热焓。即得到燃气的总量。 天然气的热值按照8500大卡计算,热风炉的热效率按照90%计算。出力为1吨的燃气热风炉在满负荷的状态下连续工作1小时,大约需要消耗天然气75立方米左右。

Calculating the gas consumption of natural gas hot blast stove: 1. Determining the capacity of hot blast stove 2. Determining the heat resistance of heating surface 3. Determining the heat loss according to the above two conditions. 4. After determining the heat loss, the thermal efficiency is 5. After obtaining the thermal efficiency, the total heat enthalpy is 6 according to the design parameters of the total capacity multiplied. Then the total heat enthalpy of the gas is multiplied by the thermal efficiency of the boiler, and the total heat enthalpy of the medium is removed. That is to say, the total amount of gas is obtained. Calorific value of natural gas is calculated according to 8500 calories, and thermal efficiency of hot blast stove is calculated according to 90%. The gas hot blast stove with output of 1 ton works continuously for 1 hour at full load, which consumes about 75 cubic meters of natural gas.

降低天然气热风炉耗气量可以这么来:

Reducing the gas consumption of natural gas hot blast stoves can be as follows:

1.改善气流相遇的条件:改善燃气热风炉燃气和空气两股气流的相通条件,其目的是增大它们的接触面积。接触面积越大,就是反应面积越大,强化了燃烧。具体办法,可以把燃气和空气分成多股细流,让两股气流具有一定速度并交叉相遇;格一股气流(通常是燃气)穿过并淹没在另一股气流之中,等等。

1. Improving the condition of gas flow encounter: Improving the condition of gas flow and air flow in gas hot blast stove, its purpose is to increase their contact area. The larger the contact area is, the larger the reaction area is, and the combustion is intensified. Specifically, the gas and air can be divided into multiple streams, so that two streams of air have a certain speed and intersect; one stream of air (usually gas) passes through and submerges in another stream of air, and so on.

2.加强混合、扰动:燃气热风炉燃用气体燃料的燃烧是单相反应,着火和燃烧比固体燃料容易,但其燃烧速度和燃烧的完善程度与燃气和空气的混合好坏关系密切。混合愈好,燃烧愈迅速、完全,火焰也短。所以,只要火焰的稳定性不被破坏,应尽量提高气流出口或燃烧室中的气流速度,甚至在入口处设置挡板等阻力大的障碍物,让其按击、冲焰,增加气流的扰动,以加强混合。

2. Strengthen mixing and disturbance: The combustion of gas fuel in gas hot-blast stove is a single-phase reaction. It is easier to ignite and burn than solid fuel, but its combustion speed and combustion perfection are closely related to the mixing of gas and air. The better the mixture, the faster and more complete the combustion and the shorter the flame. Therefore, as long as the stability of the flame is not destroyed, the air velocity in the air outlet or combustion chamber should be increased as far as possible, and barriers with large resistance such as baffles should be set up at the entrance, so that they can press and blast the flame and increase the disturbance of the air flow to enhance mixing.

3.预热燃气和空气:提高燃气和空气的温度,可以强化燃烧反应。因此应利用排烟的余热预热燃气和空气温度,从而提高燃烧温度和火焰的传播速度,使燃烧过程得以强化。

3. Preheating gas and air: Increasing the temperature of gas and air can enhance combustion reaction. Therefore, the waste heat of exhaust gas should be used to preheat the gas and air temperature, so as to improve the combustion temperature and flame propagation speed, so that the combustion process can be strengthened.

4.旋转和循环气流:促使气流旋转可以加强扰动和混合。同时,在旋转气流的中心会形成一个回流区引导大量烟气回流、循环,既强化了混合,也延长了烟气在燃气成都找人公司内流动路线和逗留时间而减少了不完全燃烧损失。

4. Rotating and circulating airflow: Promoting airflow rotation can enhance disturbance and mixing. At the same time, a reflux zone will be formed in the center of the rotating air flow to guide a large number of flue gas reflux and circulation, which not only strengthens the mixing, but also prolongs the flue gas flow route and stay time in the gas hot blast stove and reduces the incomplete combustion loss.

5.烟气再循环:为了提高燃气成都收账公司燃烧反应区的温度,可以将一部分高温烟气引向燃烧据,使之与末燃的或正在燃烧的可燃混合物相混合,以提高燃烧强度。但需注意的是,再循环的烟气量不宜过大,不然会因惰性物质过多而稀释可燃混合钩,反而使燃烧速度减缓,甚至缺氧热解,造成燃气成都收账公司不完全燃烧损失。

5. Flue gas recirculation: In order to increase the temperature of combustion reaction zone of gas hot blast stove, a part of high-temperature flue gas can be directed to combustion data to mix with end-burning or burning combustible mixture to improve combustion intensity. However, it should be noted that the amount of recycled flue gas should not be too large, otherwise the combustible mixing hook will be diluted due to excessive inert materials, which will slow down the combustion rate, even hypoxic pyrolysis, resulting in incomplete combustion loss of gas hot stove.



标签:   脚手架 热风炉 脚手架厂家 梯形脚手架 门式脚手架 移动脚手架