Harm of nitrogen and oxygen compound gas:
L, the toxic effect of N02 and NO are toxic substances, which are
harmful to human beings and biology. The affinity of NO and
hemoglobin is a few hundred times more than CO and hemoglobin,
which poses a great threat to life, and the toxicity of N02 is more
than 4-5 times of NO.
2, to plant the damaging effects of nitrogen oxides on plants have
greater harm, according to introduce the relevant information,
volume percentage concentration 2.5*10-6 nitrogen and oxides 7 hour
will enable beans, tomatoes and other crops leaves become white,
many plants will die because of injury. In addition, nitrogen
oxides can fade the acetic acid fiber, cotton and rayon.
3, NO x is one of the main causes of acid fog and acid rain
formation, NO x in the atmosphere after a series of transformation,
the formation of nitrate, nitrite and nitrate, acid rain and fog,
which constitutes a great harm to the nature.
4. Nitrogen oxide and hydrocarbon form photochemical smog.
The main treatment method of the waste gas of nitrogen and oxygen:
According to the different purification principle, there are three
kinds of catalytic reduction method, absorption and absorption..
1, catalytic reduction, the main working principle is under the
conditions of high temperature and the presence of a catalyst, the
no in the exhaust gas * reduced to N2 and no pollution, due to the
higher reaction temperature and catalyst, the equipment investment
is big, the running cost is larger.
2, adsorption method, mainly uses absorption material, adsorbent
adsorption gas in NO x, because of the adsorption capacity is
small, so this method is only suitable for NO x concentration,
small gas treatment.
3, absorption, water or acid, alkali, salt water solution to absorb
nitrogen and oxygen in the exhaust gas, so that the exhaust gas to
purify. The investment province of the equipment and the running
cost is lower.
Waste gas generating from the cover by the exhaust fan into the
absorption tower, gas in the tower from the bottom up, while
absorbing liquid by the circulation pump input into the absorbing
tower by a downward jet, exhaust gas in the tower filler layer and
absorption reverse contact of liquid and chemical reaction, most of
the absorbed; by absorption after treatment of the exhaust gas
through the gas-liquid separator and my company production of dry
adsorption tower adsorption, such a high concentration of exhaust
gas after absorption, adsorption treatment to, purification.
The absorption liquid and adsorbent of the nitrogen oxide waste gas
will be prepared and supplied by the factory and shall be used by
Structure and features
DUOKE series of nitrogen oxide purifying device is composed of a
waste gas sent students cover and an exhaust fan (including
isolation, sound insulation device), absorption tower, absorption
liquor circulating conveying system, a gas-liquid separator, a dry
adsorption tower components, with each unit design is reasonable,
compact structure, covers an area of small, simple operation and
easy management is the best and most advanced technology, the most
reasonable structure equipment efficiency of nitrogen oxide waste