Reactor and application thereof
A reactor and reaction chamber technology, applied in the field of catalysis, can solve problems such as deep oxidation, and achieve the effects of less side reactions, high selectivity and yield, and low temperature
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preparation example 1
[0050] Add manganese nitrate in 25g deionized water at 20°C, add carrier, stir for 4 hours, and dry at 120°C for 24 hours to obtain solid A; then dissolve sodium tungstate in 25g deionized water at 20°C, add solid A, stir 4 hours, dry at 120°C for 24 hours to obtain solid B; then dissolve the precursor of the additive in 50°C and 25g deionized water, add solid B, stir for 2 hours, dry at 120°C for 24 hours, and then bake at 550°C After 5 hours, the temperature was raised to 850° C. and calcined for 5 hours to obtain the catalyst used in the examples.
[0051] The precursor of auxiliary agent all refers to nitrate, and the usage amount of each component makes the content of active component and auxiliary agent in the catalyst as shown in table 1:
[0052] Table 1
[0053]
[0054] Note: the content of each component in the catalyst is based on 100g carrier;
[0055] " / " indicates that there is no additive in the catalyst.
Embodiment 1
[0057] The reactor is a quartz tube with an inner diameter of 10mm and a length of 530mm. The total catalyst loading is 1g, and the length of the catalyst section reaches 48mm. A spiral tube with an outer diameter of 2mm is inserted from the top of the reactor, and the inner diameter of the spiral tube is 1mm. , the length of the helical tube is 50cm, the distance between the outer wall of the helical tube and the outer wall of the reaction chamber is 0mm, the pitch of the helical tube is 2.5mm, the distance between the gas outlet of the helical tube and the cross-section of the downstream end of the catalyst section is 3.4cm, nitrogen flows from The inlet of the helical tube enters and the outlet of the helical tube exits. The nitrogen temperature is 20°C and the nitrogen flow rate is 200mL / min. The reaction pressure is the pressure generated by the raw material itself, that is, 0.015MPa, the reaction temperature is 830°C, the volume ratio of methane to oxygen is 2, and the re...
Embodiment 2
[0059] The reactor is a quartz tube with an inner diameter of 8mm and a length of 530mm. The total catalyst loading is 1g, and the length of the catalyst section reaches 70mm. A spiral tube with an outer diameter of 3mm is inserted from the top of the reactor, and the inner diameter of the spiral tube is 1mm. , the length of the helical tube is 60cm, the distance between the outer wall of the helical tube and the outer wall of the reaction chamber is 5mm, the pitch of the helical tube is 5mm, the distance between the gas outlet of the helical tube and the cross-section of the downstream end of the catalyst section is 6cm, and nitrogen flows from the helical tube The inlet of the nitrogen enters, and the outlet of the spiral tube is discharged. The nitrogen temperature is 30°C, and the nitrogen flow rate is 50mL / min. The reaction pressure is the pressure generated by the raw material itself, that is, 0.012MPa, the reaction temperature is 800°C, the volume ratio of methane to oxy...
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