Method used for directly separating catalyst from solid-liquid phase reacting system
A reaction system, solid-liquid phase technology, applied in chemical/physical/physicochemical fixed reactors, centrifugal force separation of sediments, etc., can solve the problems of large equipment investment and operating costs, complex equipment, etc., to achieve the benefits of engineering Amplification, reduction of catalyst loss, and high coupling effect
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Embodiment 1
[0047] For the cyclohexanone ammoximation reaction system, such as figure 1 As shown, the equipment used includes a reactor A and a centrifugal separation device arranged radially along the stirring shaft D, and the centrifugal separation device includes a centrifugal separation unit B and a liquid collector C. Such as figure 2 As shown, the centrifugal separation B unit includes an overflow pipe inlet 1, an overflow pipe 2, a primary centrifugal separation pipe 3, a riser pipe 4, a slag discharge valve 5, a secondary centrifugal separation pipe 6 and a light liquid collection pipe 7. Such as image 3 As shown, the included angle between the inlet axis of the overflow pipe 2 and the tangential direction of the speed of the overflow pipe rotation is the key to establishing a normal catalyst separation cycle. Such as Figure 4-A As shown in / B / C, the slag discharge valve 5 has three forms: normally closed by spring pressure, normally closed by spring tension and normally cl...
Embodiment 2
[0073] For the chloropropene epoxidation reaction system, the implementation process is the same as in Example 1 except for the following differences.
[0074] The feed parameters are as follows:
[0075] Allyl chloride = 167 ml / hour
[0076] Methanol = 166 ml / hour
[0077] 27.5wt% hydrogen peroxide = 87ml / hour
[0078] Titanium silicon molecular sieve concentration = 7.5 g / L
[0079] The average residence time of materials in the reactor is 90 minutes, the reaction temperature is kept at 35±1°C through jacket heat exchange, and the reaction pressure is normal pressure.
[0080] The structural parameters of the reactor are as follows:
[0081] Number of centrifugal separation units: 2
[0082] The angle between the inlet axis of the overflow pipe and the tangential direction of the speed of the overflow pipe rotation: 20°
[0083] Number of primary centrifugal separation tubes: 0
[0084] Number of secondary centrifuge tubes: 3
[0085] Angle between the axis of the se...
Embodiment 3
[0093] For cyclohexene hydration cyclohexanol reaction system, the implementation process is the same as in Example 1 except for the following differences.
[0094] The feed parameters are as follows:
[0095] Cyclohexene = 280 ml / hour
[0096] Water = 200ml / hour
[0097] ZSM-5 molecular sieve concentration = 20wt%
[0098] The average residence time of materials in the reactor is 120 minutes, the reaction temperature is kept at 120° C. through jacket heat exchange, and the reaction pressure is 0.5 MPa.
[0099] The structural parameters of the reactor are as follows:
[0100] Number of centrifugal separation units: 2
[0101] The angle between the inlet axis of the overflow pipe and the tangential direction of the speed of the overflow pipe rotation: 30°
[0102] Number of primary centrifugal separation tubes: 2
[0103] Angle between the axis of the primary centrifugal separation tube and the axial direction of the stirring paddle: 40°
[0104] The aspect ratio of the...
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