泷赢环境

首页> 新闻中心> 新闻详情

餐饮静电油烟净化器的低空排放方案

发布日期:2019-07-23 15:49     浏览量:

一、餐饮油烟的形成
 
Formation of cooking fume
 
烹饪、加工过程中挥发出来的油脂、有机物及其它加热分解或破裂的产物。是由食用油和食物在高温下经过一系列反应生产的气体、固体和液体混合物,俗称油烟。油烟主要有烷烃类、脂肪类、酯类、醇类、酮类、醛类、杂环胺、多环芳类和突变源等有机化合物组成。影响社会公共卫生、对人体的健康也有很大的危害。油烟对人体的肺部和人体的呼吸道有一定的影响;油烟中存在能引起不同生物学效应的细胞遗传毒性物质,表现是致癌性的突变性,降低人体的免疫机能。
 
Oil, organic matter and other products which are decomposed or broken by heating during cooking and processing. It is a mixture of gases, solids and liquids produced by a series of reactions of edible oil and food at high temperature, commonly known as lampblack. Oil fumes mainly consist of alkanes, fats, esters, alcohols, ketones, aldehydes, heterocyclic amines, polycyclic aromatic compounds and mutant sources. Influencing public health and human health are also very harmful. Oil fume has certain effects on human lung and respiratory tract. There are cytogenetic toxic substances in oil fume that can cause different biological effects, which are characterized by carcinogenic mutation and reduce human immune function.
二、餐饮油烟废气量计算
 
2. Calculation of cooking fume exhaust
根据厨房通风标准设计规范,烹饪厨具上方需安装集烟罩,通风工程排烟量需按照烟罩截面风速0.5-0.7m/s设计。
 
According to the standard design specification of kitchen ventilation, smoke collecting hood should be installed on the top of cooking kitchen utensils, and the amount of smoke discharged from ventilation project should be designed according to the cross-section wind speed of smoke hood 0.5-0.7m/s.
 
根据Q=3600V·S
 
According to Q = 3600V. S.
 
Q:排烟量—m³/h V:截面风速—m/s S:集烟截面—㎡
 
Q: Smoke Emission - m_/h V: Sectional Wind Speed - m/s S: Smoke Collection Section
 
截面风速按0.6设计,即每平方米烟罩截面排烟量为
 
The cross-section wind speed is designed as 0.6, i.e. the smoke exhaust volume per square metre of the hood cross-section.
 
Q=3600×0.6×1 =2160 m³/h
 
Q=3600*0.6*1=2160 m/h
 
三、餐饮油烟治理目标及低空排放要求
 
3. Target of Fume Control and Low Altitude Emission Requirements for Catering
 
1、 餐饮油烟治理目标
 
1. Target of Restaurant Fume Control
 
烟气排放出口符合《饮食业油烟排放标准》(GB18483-2001)的排放要求,实现达标排放;
 
The smoke emission export meets the emission requirements of "Fume Emission Standard for Catering Industry" (GB18483-2001) and achieves the emission standards.
 
2、餐饮油烟低空排放要求
 
2. Requirements for Low Altitude Emission of Catering Fume
 
额定风量下,油烟净化设备净化效率要求:95%以上。
 
Under rated air flow, the purifying efficiency of oil fume purification equipment should be more than 95%.
 
在城市居民区、商业区,一般对餐饮油烟的排放要求比较苛刻,建筑物外墙不能安装风管,只能低空排放。即使油烟排放达到《饮食业油烟排放标准》(GB18483-2001)的排放要求,也有可以因油烟扰民被投诉,因此对油烟净化设备的净化效率要求比较高,额定风量下,净化效率需达95%以上。
 
In urban residential and commercial areas, the emission requirements of cooking fume are generally more stringent. The exterior walls of buildings can not be installed with air ducts, but can only be discharged at low altitudes. Even if the fume emission meets the emission requirements of the "Fume Emission Standard for Catering Industry" (GB18483-2001), people may be complained about the fume disturbance. Therefore, the purification efficiency of the fume purification equipment is relatively high. Under rated air flow, the purification efficiency needs to be more than 95%.
 
四、治理系统的设计
 
IV. Design of Governance System
 
1、设计工艺和流程
 
1. Design process and process
 
针对厨房炒锅油烟特点及工程要求,治理采用杭州泷赢环境科技有限公司先进的高压静电净化技术,其工艺流程设计根据实际求情况定制。
 
According to the characteristics and engineering requirements of cooking oil fume in kitchen frying pan, the advanced high-voltage electrostatic purification technology of Hangzhou Zhengying Environmental Science and Technology Co., Ltd. is adopted in the treatment, and the process design is customized according to the actual situation.
 
2、静电式餐饮油烟净化设备的工作原理
 
2. Working Principle of Electrostatic Catering Fume Purification Equipment
 
泷赢科技静电式餐饮油烟净化设备是利用阴极在高压电场中发射出来的电子,以及由电子碰撞空气分子而产生的负离子来捕捉油烟粒子,使油烟粒子带电,再利用电场的作用,使带电油烟粒子被阳极所吸附,以达到除油烟的目的。由于电子的直径非常小,其粒径比油烟粒子的粒径要小很多数量级。而且电场中电子的密度很高(可达至到1亿/cm3的数量级),可以说无所不在。处在电场中的油烟粒子很容易被电子捕捉(即荷电),油烟粒子在电场中的荷电是遵循一定机理的必然现象,而不是简单的偶尔碰撞引起的。从理论上分析:包括电场荷电和扩散荷电。电场荷电是由于油烟粒子的相对介电常数大于1,在电场中油烟粒子周围的电力线发生变化,使电力线与油烟粒子表面相交,沿着电力线运动的离子必然与油烟粒子碰撞并将电荷传给油烟粒子;扩散荷电是离子在空气中因热运动而扩散,当接近尘粒时产生电像力互相吸引而荷电。
 
The electrostatic cooking fume purification equipment of Zhengyi Science and Technology uses electrons emitted from cathode in high voltage electric field and negative ions produced by electrons colliding with air molecules to capture cooking fume particles, make cooking fume particles charged, and then use the electric field to make the charged cooking fume particles adsorbed by the anode, so as to achieve the purpose of removing cooking fume. Yes. Because the diameter of electrons is very small, the particle size of electrons is much smaller than that of soot particles. Moreover, the density of electrons in the electric field is very high (up to 100 million/cm3), which can be said to be ubiquitous. The soot particles in the electric field are easily captured by electrons (i.e. charged). The charge of soot particles in the electric field is an inevitable phenomenon that follows a certain mechanism, rather than a simple occasional collision. Theoretical analysis: including electric field charge and diffusion charge. Electric field charging is due to the relative dielectric constant of soot particles greater than 1. In electric field, the power line around soot particles changes, which makes the power line intersect with the surface of soot particles. Ions moving along the power line inevitably collide with soot particles and transfer charge to soot particles. Diffusion charging is the movement of ions in air due to heat. Diffusion, when approaching dust particles, produces an electric image force that attracts and charges each other.
电场的设计使油烟粒子的运动速度较低,一般在零点几秒内便能使油烟粒子荷上足够的电荷,带电粒子在电场中会受到电场力(库仑力)的作用,其结果是油烟粒子被吸附到阳极上。因此电除油烟的除油烟率非常高,而且特别适用于捕捉粒径较小和重量较轻的油烟粒子.
 
The design of electric field makes the soot particles move at a lower speed. Generally, within a few seconds of zero, the soot particles can be charged with enough charge. The charged particles will be affected by electric field force (Coulomb force) in the electric field. The result is that the soot particles are adsorbed to the anode. Therefore, the rate of oil fume removal by electric degreasing is very high, and it is especially suitable for capturing oil fume particles with smaller particle size and lighter weight.
 
在静电式餐饮油烟净化设备里,电功率主要是用来发射电子和推动油烟粒子,与空气几乎不产生作用,因此静电场的能耗较小。而且除油烟设备的阻力也较小,无须使用压力较大的风机。因此静电式油烟净化设备的总能耗比起其他的除油烟方式要小。
 
In the electrostatic cooking fume purification equipment, the electric power is mainly used to emit electrons and promote soot particles, which has little effect on the air, so the energy consumption of the electrostatic field is small. Besides, the resistance of the degreasing equipment is also small, and there is no need to use a fan with high pressure. Therefore, the total energy consumption of electrostatic oil fume purification equipment is smaller than that of other methods of oil fume removal.