Method and device for global warming prevention
A greenhouse and earth technology, applied in chemical instruments and methods, separation methods, greenhouse gas capture, etc., can solve problems such as a large amount of heat of reaction
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[0160] Example 1
[0161] For the composition and flow rate shown in Table 1, the discharge from the adipic acid manufacturing equipment, containing nitrous oxide gas (N 2 O) the nitrous oxide gas (N 2 O) The thermal decomposition reaction is carried out.
[0162] figure 2 It is a schematic explanatory diagram for showing such a thermal decomposition device.
[0163] The thermal decomposition reaction furnace (thermal decomposition part 8) may be a cylindrical heat-resistant brick furnace with an inner diameter of 450 mm and a length of 4750 mm, and the thickness of the furnace wall is 300 mm. In the furnace, four thermal decomposition reaction chambers (nitrous oxide gas (N 2 O) Use the decomposition reaction zone). The number of staged supply of the gas to be treated is 4. The divided and preheated gas to be processed is introduced into the first reaction chamber, and the remaining gas to be processed after the division is introduced into the second, third, and fourth reaction...
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[0165] Example 2
[0166] Except that the supply temperature of the gas to be treated is 300°C, the flow rate of hydrogen supplied to the preheating section is 7.2 standard cubic meters per hour (Nm 3 / Hr), the flow rate of the gas to be treated supplied to the preheating part, the second, third, and fourth reaction chambers are 55.7 standard cubic meters per hour (Nm 3 / Hr), 60.0 standard cubic meters per hour (Nm 3 / Hr), 72.9 standard cubic meters per hour (Nm 3 / Hr), 91.4 standard cubic meters per hour (Nm 3 / Hr), the same as in Example 1, and under this condition, the nitrous oxide gas (N) in the gas to be treated discharged from the adipic acid manufacturing equipment 2 O) Carry out thermal decomposition.
[0167] At this time, the pressure in the pyrolysis furnace is 1.25 kg / cm² (kg / cm 2 ), the temperature of the mixed airflow located inside the preheating section and the entrance of the second, third, and fourth reaction chambers are respectively 830℃, and the temperature o...
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[0168] Example 3
[0169] Except that the supply temperature of the gas to be treated is 700 ℃, the flow rate of hydrogen supplied to the preheating section is 0.1 standard cubic meters per hour (Nm 3 / Hr), the flow rate of the gas to be treated in the preheating section, the second, third, and fourth reaction chambers are 3 standard cubic meters per hour (Nm 3 / Hr), 12.0 standard cubic meters per hour (Nm 3 / Hr), 50.6 standard cubic meters per hour (Nm 3 / Hr), 214.4 standard cubic meters per hour (Nm 3 / Hr), the same as in Example 1, and under this condition the nitrous oxide gas in the gas to be treated (N 2 O) Carry out thermal decomposition.
[0170] At this time, the pressure in the pyrolysis furnace is 1.25 kg / cm² (kg / cm 2 ), the temperature of the mixed airflow located inside the preheating section and at the entrance of the second, third, and fourth reaction chambers are respectively 830°C, and the temperature of the airflow discharged from the thermal decomposition furnac...
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