System and method for loading micro-particles into micro-channel reactor
A microchannel reactor and microchannel technology are applied in chemical instruments and methods, chemical/physical/physical chemical reactors, chemical/physical/physical chemical processes, etc., which can solve problems such as complex operation and achieve high catalytic activity, Effects with repeated operations and simple structures
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[0057] According to a specific preferred embodiment, step 2) includes:
[0058] 2-1: First increase the flow rate of the gas to 110-130% of the initial fluidization velocity until the particles coming out of the storage tank are significantly reduced;
[0059] 2-2: Increase the flow rate of the gas to 180-245% of the initial fluidization velocity until all the particles in the storage tank enter the microchannel reactor.
[0060] According to a specific embodiment, adopt the method of the present invention to load catalyst such as figure 1 shown. The microchannel reactor 5 is a cuboid and placed vertically. A stainless steel metal sintered plate is placed on the bottom of the reactor. After installing a spring, the lower head of the reactor can be installed and the bottom of the reactor can be closed (not shown). The top of the microchannel reactor 5 is connected to the distributor 4, and the enlarged diameter part of the distributor 4 is a quadrangular pyramid. After all e...
Embodiment 1
[0075] Before loading the catalyst, each channel of the microchannel reactor is cleaned with absolute ethanol, and purged with purified air to ensure that there are no impurities in the reaction channel. The lower porous support is placed at the bottom of the reactor, and the lower head of the reactor is installed after the spring is installed.
[0076] The volume of the catalyst tank is 400mL, and the height-to-diameter ratio is 18; the apex angle of the cone at the enlarged diameter part of the distributor is 60°. Nitrogen is used as the delivery gas, and the amount of nitrogen required for the initial fluidization velocity of the particles is 2500mL / min.
[0077] The specific loading method is as follows:
[0078] 1) Add 160mL catalyst from the feeding port on the catalyst tank, introduce nitrogen gas at the bottom, the gas flow rate is 1500mL / min, connect the top gas of the tank to the dust removal device to vent, remove the particles smaller than 80 μm in the catalyst, a...
Embodiment 2
[0082] Before loading the catalyst, each channel of the microchannel reactor is cleaned with absolute ethanol, and purged with purified air to ensure that there are no impurities in the reaction channel. The lower porous support is placed at the bottom of the reactor, and the lower head of the reactor is installed after the spring is installed.
[0083] The volume of the catalyst tank is 400mL, and the height-to-diameter ratio is 12; the apex angle of the cone at the enlarged diameter part of the distributor is 90°. Nitrogen is used as the delivery gas, and the amount of nitrogen required for the initial fluidization velocity of the particles is 3300mL / min.
[0084] The specific loading method is as follows:
[0085] 1) Add 160mL catalyst from the feeding port on the catalyst tank, introduce nitrogen gas at the bottom, the gas flow rate is 2000mL / min, connect the top gas of the tank to the dust removal device to vent, and remove the particles smaller than 80 μm in the catalys...
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