Method for prolonging operation period of fluidized bed and improving operation quality
A technology of operating cycle and operating quality, which is applied in chemical instruments and methods, compounds of group 4/14 elements of the periodic table, organic chemistry, etc., can solve problems such as increased accumulation of impurities, short operating cycle, and increased side reactions, and achieve The effect of improving conversion yield, stable production operation, and reducing parking and discharging
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Embodiment 1
[0037] Under the action of copper-based catalyst, silicon powder and methyl chloride react in the fluidized bed reactor at a certain temperature and pressure to generate methyl chlorosilane monomer gas, which is separated by multi-stage cyclone separator, and the contact body returns to the reactor continue to participate in the reaction,
[0038] The reaction cycle of the reactor is divided into four stages: the early stage, the middle stage, the middle and late stage, and the late stage. According to the reaction characteristics of each stage, the content of trace elements, and the content of impurities, the ratio of catalyst addition, contact body (silicon powder and copper powder are mixed to form active Contact body) Impurities are thrown out to ensure the best operating conditions, to extend the operating cycle and improve the operating quality.
[0039]The first stage: in the early stage of the reaction, the catalyst addition ratio is: simple substance: suboxide: oxide ...
Embodiment 2
[0045] Silicon powder and methyl chloride react in a fluidized bed reactor under the action of a copper-based catalyst at a certain temperature and pressure to generate methylchlorosilane monomer gas. After being analyzed by a multi-stage cyclone separator, the contact body continues to return to the reaction The organ participates in the reaction,
[0046] The reaction cycle of the reactor is divided into four stages: the early stage, the middle stage, the middle and late stage, and the late stage. According to the reaction characteristics of each stage, the content of trace elements, and the content of impurities, the ratio of catalyst addition and the removal of contact impurities are controlled to ensure optimal operating conditions. , to extend the operating cycle and improve the operating quality.
[0047] The first stage: in the early stage of the reaction, the ratio of catalyst addition element: suboxide: oxide = 70%: 20%: 10%, time: 20-25 days. Silicon powder, cataly...
Embodiment 3
[0053] Silicon powder and methyl chloride react in a fluidized bed reactor under the action of a copper-based catalyst at a certain temperature and pressure to generate methylchlorosilane monomer gas. After being analyzed by a multi-stage cyclone separator, the contact body continues to return to the reaction The organ participates in the reaction,
[0054] The reaction cycle of the reactor is divided into four stages: the early stage, the middle stage, the middle and late stage, and the late stage. According to the reaction characteristics of each stage, the content of trace elements, and the content of impurities, the ratio of catalyst addition and the removal of contact impurities are controlled to ensure optimal operating conditions. , to extend the operating cycle and improve the operating quality.
[0055] The first stage: in the early stage of the reaction, the catalyst addition ratio element: oxide sub-oxide: oxide = 75%: 15%: 10%, time: 20-25 days. Silicon powder, ca...
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