Simple Overview: 

In the process of fermentation, storage, mixing, unloading, overflowing, loading platform, etc. of various asphalt materials, a large amount of asphalt flue gas with medium and low concentration will be generated. The flue gas contains a variety of organic substances, including carbocyclic hydrocarbons, cyclic hydrocarbon derivatives and other compounds, many of which are harmful to human health. Asphalt smoke contains various polycyclic aromatic hydrocarbons such as benzopyrene, benzanthracene, and carbazole. Most of them are carcinogenic and strong carcinogens. The particle size is mostly between 0.1 and 1.0 μm, the smallest is only 0.01 μm, and the largest is about 10.0 μm. A variety of carcinogens represented by pyrene. The main way that it endangers human health is to adhere to the floating dust below 8 um and be inhaled into the human body through the respiratory tract. Therefore, it is very necessary to purify and treat asphalt flue gas so that the emission can meet atmospheric environmental standards.

The purification system designed and launched by the grass green for the medium and low concentration of asphalt flue gas is a combined purification system, which consists of spray tower, dry filter, plasma exhaust gas filter, electrostatic fume purifier, ozone generator, activated carbon adsorption Equipment and other products are combined according to on-site working conditions. Asphalt dust generated in the mixing tank and other processes is treated with a dust collector.

02. Scope of application

We can provide targeted solutions and equipment for the following conditions:

· Asphalt storage tanks, fermentation tanks, and mixing plants mainly generate asphalt flue gas and waste gas

· Asphalt discharge port, overflow port, loading platform, mainly produce asphalt smoke particles and exhaust gas

· Other working conditions that produce medium and low concentration bitumen flue gas

03. Collection plan

Common collection methods are as follows. Welcome to call directly to get one-to-one collection plan

Top Suction：

It is located near the fume source, and relies on the suction effect of the hood to inhale harmful substances into the hood, which has little impact on production operations and is easy to install and maintain. Mainly used in occasions where the pollution source cannot be sealed due to limited process or operating conditions

The top suction hood is arranged on the outer hood above the source of harmful substances.

Side suction：

It is located near the fume source, and relies on the suction effect of the hood to inhale harmful substances into the hood, which has little impact on production operations and is easy to install and maintain. Mainly used in occasions where the pollution source cannot be sealed due to limited process or operating conditions

Side hoods are external hoods that are positioned on the sides of the source of harmful substances

Confined collection:

The pollution sources are all in the confined space, the effect of controlling harmful substances is good, and it is not affected by the ambient air flow, but affects the operation. It is mainly used in the occasions where the harmful substances are more harmful and the control requirements are high.

04. Asphalt flue gas purification system

The purification system designed and launched by Grass Green for asphalt flue gas is a combined purification system. It consists of spray tower, dry filter, plasma exhaust gas filter, electrostatic fume purifier, ozone generator, activated carbon adsorption equipment and other products according to the Combined on-site conditions. Asphalt dust generated in the mixing tank and other processes is treated with a dust collector.

The whole system fully considers the safety performance requirements of the actual operating environment of the equipment such as combustion and explosion in terms of material, process and structural design; the purification efficiency meets the national environmental protection emission limit requirements.

This picture is the flue gas treatment flow chart designed by Grass Green for a large new building material manufacturing company.

05. Our advantages

Sino-US joint venture, with formal production qualifications, and air pollutant control engineering design and construction qualifications

8 years of R&D and production experience, with a number of patented technologies, some products have introduced American ALFRED technology

One-to-one scheme design, the combined purification process is mature, and the purification effect is up to standard

There are mature solutions to deal with difficult working conditions such as high temperature, open flame, high concentration, and water vapor in the industry.

Case  :  Asphalt flue gas project