1、 Analysis of exhaust emission from DPF and diesel generator set For diesel engine exhaust pollution control, Green Valley Environmental Protection provides a variety of solutions to meet the different needs of various users, and has developed diesel engine exhaust treatment equipment with different models and functions, such as Doc, DPF, DCF and a series of diesel engine exhaust purification equipment, which solves the major problem of diesel engine exhaust pollution that has plagued customers for a long time.
As a kind of common emergency standby power supply, diesel generator set is widely used in real estate, data center, hospital, bank, school, bank, hotel, office building and other places. Where the above places have strict requirements for power support, these places need to be equipped with two or more sets of diesel generator sets, one for standby, in case of emergency. With the wide application of diesel generator set, the emission problem of the unit during operation has also been paid close attention to by environmental protection. In the early stage of cold start of standby diesel generator set, due to low cylinder temperature and small load, the diesel combustion is insufficient, and there will be relatively strong black smoke. The main components of these black smoke are carbon particles that have not been fully burned and a small amount of hydrocarbons. These two kinds of substances are the main sources of environmental pollution and the focus of environmental protection. With the extension of the operation time of the unit, the load rises slowly, and the continuous work in the cylinder increases the temperature. Under the good operation state of the unit, the diesel is fully burned and the smoke is reduced rapidly.
2、 DPF particle trap
DPF (diesel particulate filter), diesel generator set exhaust particulate matter catcher, also known as generator black smoke purifier and engine dust removal device, is a product for black smoke control of standby diesel generator set. The filter element is made of ceramic and metal materials, which have obvious smoke control effect. After the product is correctly selected, it can meet the requirements of lingman blackness below grade I required by environmental protection.
Particle trap (DPF) is a kind of ceramic filtering equipment installed in the engine emission system. It can capture particulate emissions before they enter the atmosphere, so as to reduce the emission of particulate matter in automobile exhaust and reduce the pollution of automobile exhaust to the atmosphere. Its ceramic filter element has long been used in the tail gas treatment of small diesel engines such as automobiles and motorcycles. After the technology is transferred to the maximum power diesel generator set, the ceramic purifier has the characteristics of large engine startup back pressure, large box volume and large floor area; Metal filter element is an upgraded product developed on the basis of ceramic filter element. It is a black smoke purifier. It has the characteristics of small startup pressure, compact box, simple regeneration mode and so on. The particle trap has the regeneration function, that is, the carbon in the captured particles is oxidized and burned, and finally the carbon dioxide is generated and discharged. Therefore, the installation of particle trap is an important measure to promote low-carbon and environmental protection.
3、 Doc catalytic oxidizer
Diesel oxidation catalyst doc (diesel oxidation catalyst) is composed of catalyst carrier precious metal active coating (catalyst), diesel oxidation catalyst doc (diesel oxidation catalyst) is composed of catalyst carrier precious metal active coating (catalyst), diesel generator set tail gas catalytic oxidizer is a compact product for tail gas treatment of standby diesel generator set, and the surface of filter element is coated with precious metal as catalyst, Used for catalytic oxidation of harmful substances in diesel engine exhaust, there are usually two materials: metal and ceramic. Through doc, carbon monoxide (CO) and hydrocarbon (HC) emitted by diesel engine can be catalytically reduced to carbon dioxide and water, and a small amount of carbon particles can be absorbed to reduce the emission of harmful gases and a small amount of carbon particles.