• 訪問中文版
    400 9933 952
    13291195999
    News informationENGINEERING CASE
    News information
    Equipment principle
    Online announcement
    WHY CHOOSE US為什么選擇我們
    01Provides a complete solution
    02Professional design and manufacturing
    03Exhaust gas treatment industry qualification
    04Experienced operation team
    05Many well-known corporate partners
    06Timely pre-sales service
    Equipment principle Position:Home > News information > Equipment principle

    Suzhou olefins | How is the role of organic waste gas treatment equipment?

    Source:Huaxi EP Public date:2019-03-30 Read:465次
    Suzhou olefins | How is the role of organic waste gas treatment equipment?

    The paint mist mainly comes from the scattered part of the solvent-based paint in the air spray operation, and the composition of the waste gas treatment equipment is common with the applied paint. Organic solvents are mainly derived from solvents and thinners in the process of coating application. Most of them are evaporative emissions. The primary pollutants are xylene, benzene, toluene and so on.

    Painting refers to covering the maintenance layer or decoration layer on the metal and non-metal exterior, which is the most basic skill for the maintenance and decoration of the product. The coating process can be easily summarized as: pretreatment → spray → boring or curing. Pretreatment generally includes degreasing, descaling, and passivation (phosphating) processes. For different coatings and anti-corrosion requirements, degreasing, descaling, phosphating and other treatment methods should be selected according to the raw materials of the workpiece. In the pre-treatment descaling process, sandblasting, shot blasting or sanding processes are also available on demand in different sectors of different occupations.

    With the rapid development of painting skills, the automatic production of painting has made significant progress, and the electrostatic spraying, electrophoretic painting and powder coating skills have been applied. However, the current coatings are also selected for organic solvent-based coatings.

    According to the coating production process, the coating waste gas mainly comes from the pre-treatment, spraying and boring process. The pollutants discharged are mainly: dust or acid mist generated in the pre-treatment process, paint mist and organic solvent generated during painting, boring Organic solvent that occurs when evaporating. The paint mist is mainly derived from the scattered parts of the solvent-based paint in the air spray operation, and its composition is common with the applied paint. Organic solvents are mainly derived from solvents and thinners in the process of coating application. Most of them are evaporative emissions. The primary pollutants are xylene, benzene, toluene and so on. The harmful exhaust gas emitted in the painting is mainly concentrated on the paint production line, and the spray booth, the drying room and the drying room are the primary sources of exhaust gas.

    2. Painting exhaust gas treatment measures

    The management of paint exhaust gas can be divided into two ways of prevention and treatment. The first priority is to reduce emissions of waste gas. The first priority is to clean and manage the inevitable emissions.

    2.1 Reduce exhaust emissions

    2.1.1 Source control, reducing the use of organic solvents

    In order to reduce the exhaust emissions during the coating process, it is possible to start from the source, and it is not necessary to use or use a coating containing organic solvents, such as powder coatings, water-based coatings, and high-solids coatings. Powder coatings do not use organic solvents. In addition to the occurrence of paint dust, the coating process does not emit harmful exhaust gas. Therefore, it has developed rapidly in recent years and the application range has been greatly increased. Water-soluble coatings and high-solids coatings are also effective in reducing harmful emissions during the coating process, which is a trend in the coatings industry. In the painting process, paints with high solid content coatings or without organic solvents are selected. Although the coatings are more expensive, they reduce organic solvent emissions, reduce the difficulty of exhaust gas treatment and the planning of treatment facilities, and are compatible with clean production and energy saving. Requirements for emission reduction.

    2.1.2 Improve the use rate of paint, reduce the amount of use

    Spraying is a common method in coating production. However, the paint sprays more fog, and the paint evaporates into the air in the form of paint mist.

    The coating power is affected by many factors, and the coating power of these coating methods is high when painting large-area workpieces. However, as long as the large-capacity low-pressure air spray gun (HVLP) and electrostatic spraying are satisfactory, 60% of the coating power is satisfied. In addition, the use of robotic spray and rotary atomization methods can improve the use of paint.

    2.2 Management of exhaust emissions

    For the exhaust gas from the painting, an appropriate method can be used for purification management. There are two ways to purify the management. One is to recycle the organic solvent in the exhaust gas, and the other is to differentiate the organic solvent in the exhaust gas into CO2 and H2O.

    2.2.1 Recycling of organic solvents

    The paint mist and the evaporated organic solvent that occur during the coating process are primarily organic solvents that can be recycled. The recovery methods include activated carbon adsorption, liquid absorption and condensation.

    2.2.2 Organic solvent differentiation

    It refers to the differentiation of organic solvents into CO2 and H2O. Methods for differentiating organic solvents include incineration, catalytic incineration, ultraviolet-ozone, and microbial differentiation.
    Serivce
    Project
    Product
    Equipment principle
    Service idea
    Dynamics
    Industry news
    New case
    Human resources
    Online notice
    Contact us
    Free Hot Line400 9933 952
    ©2022 Suzhou Huaxi Environmental Protection Technology Co., Ltd. Copyright
    E-mail:wjs@szhxep.com
    Mobile:13291195999
    蘇ICP備15053602號 Technical support:Huaxi Group
    Wechat consultation Mobile access
    Suzhou Huaxi Environmental Protection CopyRights
    乌克兰精品无码av毛片,人妻 丝袜美腿 中文字幕,国产卡二卡三卡四卡免费第一番,欧美日韩一卡2卡三卡4卡 乱码欧美孕交 ,无码H肉3D樱花动漫在线观看 日日摸夜夜爽无码毛片精选| 无码H肉3D樱花动漫在线观看| 综合Av人妻一区二区三区| 精品日产一卡2卡三卡4卡| 被男狂揉吃奶胸60分钟视频 | 乌克兰精品无码av毛片| 日日摸夜夜添夜夜添欧美| 日日摸夜夜添夜夜添欧美| 美女奶头免费看网站18禁无遮挡| 东北妇女精品BBwBBW| 乱码专区一卡二卡国色天香| 东北妇女精品BBwBBw| 亚洲国产精品久久人人爱| 国 产 黄 色 A 片 免 费 看| 免费无码一区二区三区A片| 国产精品一二三社区视频| 亚洲欧洲精品一区二区三区不卡| 免费A片吃奶玩乳视频出水| 国内精品久久久久久久999| 免费A片吃奶玩乳视频出水| 漂亮少妇按摩被中出中文字幕| 99视频精品国在线视频艾草 | 亚洲综合另类小说色区色噜噜| 亚洲综合另类小说色区色噜噜| 综合Av人妻一区二区三区| 人妻互换一二三区激情视频| 最爽的乱婬视频a毛片| 四虎影院在线观看| 乌克兰丰满女人A级毛片| 极品尤物旗袍自慰喷白浆| 国产精品乱码一区二区三区| 性色高清XXXXX厕所偷拍| 日本丰满少妇高潮呻吟| 亚洲大尺度AV无码专区在线观看 | 少妇裸体婬交视频免费看| 51精品国产人成在线观看| 狠狠噜天天噜日日噜久久久| 少妇仑乱A毛片|