A method and system for producing superimposed raw materials by hydrorefining mixed C4 raw materials
A mixed C4 and hydrorefining technology, which is applied in the processing of gas mixtures, hydrotreating processes, and hydrocarbon oil treatment, can solve the problems of high cost and easy deactivation of precious metal catalysts, and achieve low cost and long operation cycle , The effect of high monoolefin yield
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Embodiment 1
[0050] A mixed carbon four is used as raw material C, and its properties are shown in Table 1. Mixed carbon four raw materials C and N 2 Mixed into the first reactor, contact with catalyst A in the first reactor to carry out mercaptan etherification reaction, the reaction product enters the fractionation tower, separates sulfide and low-sulfur mixed carbon four, and the separated low-sulfur mixed carbon four It is mixed with hydrogen and selective control gas CO and enters the second reactor, where it is contacted with catalyst B to perform selective dealdiene reaction. The reaction conditions and product properties are shown in Table 3. It can be seen from Table 3 that after the etherification and selective dealdiene reaction of the mixed C4 raw material, the sulfur content of the product is greatly reduced, most of the mercaptan sulfur is removed, and the product dienes The content reaches 0.001% by volume, which meets the feeding requirements of the stacking technology, an...
Embodiment 2
[0052] A mixed carbon four is used as raw material D, and its properties are shown in Table 1. Mixed carbon four raw materials D and N 2 Mixed into the first reactor, contact with catalyst A in the first reactor to carry out mercaptan etherification reaction, the reaction product enters the fractionation tower, separates sulfide and low-sulfur mixed carbon four, and the separated low-sulfur mixed carbon four It is mixed with hydrogen and selective control gas CO and enters the second reactor, where it is contacted with catalyst B to perform selective dealdiene reaction. The reaction conditions and product properties are shown in Table 3. It can be seen from Table 3 that after the etherification and selective dealdiene reaction of the mixed C4 raw material, the sulfur content of the product is greatly reduced, most of the mercaptan sulfur is removed, and the product dienes The content reaches 0.004% by volume, which meets the feeding requirements of the stacking technology, an...
Embodiment 3
[0054] A mixed carbon four is used as raw material E, and its properties are shown in Table 1. Mixed carbon four raw materials E and N 2 and H 2 Mixed into the first reactor, contact catalyst A in the first reactor to carry out mercaptan etherification reaction, the reaction product enters the fractionation tower, separates sulfide and low-sulfur mixed carbon four, and the separated low-sulfur mixed carbon four Mix with hydrogen and selective control gas NO to enter the second reactor, and contact with catalyst B in the second reactor to carry out selective dealdiene reaction. The reaction conditions and product properties are shown in Table 3. It can be seen from Table 3 that after the etherification and selective dealdiene reaction of the mixed C4 raw material, the sulfur content of the product is greatly reduced, most of the mercaptan sulfur is removed, and the product dienes The content reaches 0.003% by volume, which meets the feeding requirements of the stacking techno...
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