代写thesis

论文代写:流化床气化炉的工作原理

论文代写:流化床气化炉的工作原理。流化床气化炉的工作原理是原料颗粒悬浮在富氧气体环境中相互作用。原料基本供应给富氧环境。合成物是气化炉床。气化炉通过反混合过程将煤颗粒与一些已经处于气化状态的颗粒混合。因此,在这里可以观察到正在引入用于气化的粒子和已经在气化中的粒子的混合。稳定的煤流被混合到气化混合物中。流态化反应一旦开始就必须持续下去。要做到这一点,煤颗粒悬浮必须是稳定的。为了促进流态化的可持续性,大多数情况下只使用小的煤颗粒。粒度小于6mm的则使用。接下来论文代写专家将为同学们讲解下流化床气化炉的工作原理。

这个过程发生的系统可以描述如下。首先,煤从一侧进入反应器,启动反应的蒸汽和氧化剂从底部进入反应器。煤以正常的速度进料,但送进去的蒸汽氧化剂混合物将以一定的速度推进。在气化炉的温度将是一个恒定的高,以确保所需的碳转化率是满足的。碳转化率,通常预期在气化炉是90- 95%的转化率。

温度保证了焦油、油和相关的酚会被稳定地分解。为了保证分解,温度必须很高,但气体床和灰熔合模型之间的一个重要区别是灰熔合模型使用的温度要高得多。这对于流化床气化炉来说是不需要的。熟料的形成可能导致床层的脱流,这是灰熔合反应器温度非常高的原因。在这个过程中,会有一些焦炭颗粒以原料合成气的形式被夹带和输送。这是在气化炉系统顶部形成的气体,气体被回收再利用。它被回收和循环利用。它将继续在反应堆过程中发挥作用。

虽然原料合成气是一种副产物,但在气化炉床的下方有形成的灰颗粒。这些粒子通常在蒸汽的升温过程中发挥作用,所以不会以能量的形式损失任何东西。进入的蒸汽和回收的气体通过一个旋风被推回来,将被平行加热。因此,在原料被引入之前和之后给予的外部热量是不同的。启动时需要外部热量,由于热能回收的方式,在引入原料后,部分加热需求会降低。

The system in which this process happens can be described as follows. Firstly, the coal will enter the reactor at one side, and steam and oxidant to start the reaction will be sent inside from the bottom. The coal is fed at a normal speed, but the steam oxidant mix that is sent inside will be pushed at a velocity. The temperature in the gasifier will be a constant high one in order to ensure that the needed carbon conversion rate is met. Carbon conversion rate that is usually expected in the gasifier is 90-95 percent in conversion.

The temperature ensures that tar, oils, and the associated phenols will be decomposed steadily. Now while the temperature has to be high in order to ensure such decomposition happens, an important point of difference between the gas beds and the ash fusion models is that the ash fusion models make use of much higher temperatures. This is not needed for the fluidized bed gasifier. The formation of clinkers could result in de-fluidization of the bed and this is the reason behind the very high temperatures in ash fusion reactors. During the process, there would some char particles that will be entrained and sent in the form of raw syngas. This is the gas formed at the top of the gasifier system and the gas is recovered to be reused. It is recovered and recycled. It will continue to play a role in the reactor process.

While the raw syngas is one of the by-products, there are ash particles that are formed just below the gasifier bed. The particles usually play a role in the heating up of the steam, so nothing is lost in the form of energy. Incoming steam and the recycled gas being pushed back through a cyclone will be heated in parallel. Therefore, there is a difference in the amount of external heat that is given before feedstock is introduced and after. External heat requirement is needed at start-up, and some of this heating requirement will go down after feedstock is introduced because of the way heat energy is recycled.

以上内容就是论文代写专家为同学们讲解的流化床气化炉的工作原理。若要问论文代写哪家好?代写推荐选择英国论文代写Advancedthesis服务公司。因为其服务公司的论文创作专家团队由高素质和经验丰富的学术作家组成,保障论文创作质量且没有任何抄袭或剽窃行为。除此之外,还为留学生们提供硕士论文代写、essay代写、毕业论文代写等服务,而且代写论文价格公平合理,保证论文原创,并使用权威的抄袭检测系统,避免论文出现重复率过高的情况发生,从而让留学生们轻松应对论文写作并创作出专属个人的优秀论文!