A kind of method for producing propane by conversion of hydrogenated light hydrocarbons
A technology for hydrogen conversion and light hydrocarbons, which is applied in chemical instruments and methods, hydrocarbon cracking to produce hydrocarbons, hydrocarbons, etc. Long-term stable operation, excellent product quality, and the effect of reducing dry gas yield
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Embodiment 1
[0049] The present embodiment describes the process flow of the present invention in conjunction with the accompanying drawings, the details are as follows:
[0050] 1) The light hydrocarbon raw material (27), fresh hydrogen (26), circulating hydrogen and circulating light hydrocarbon components are heated to the reaction temperature in the raw material heating furnace (2), and then enter the reactor (3), and the reaction is carried out under the condition of an acidic catalyst , to get the reaction product.
[0051] 2) The reaction product passes through the raw material-reaction product heat exchanger (1) and the product cooler (5) respectively, and then enters the gas-liquid separation tank (4) after cooling down.
[0052]3) The light components in the gas-liquid separation tank enter from the bottom of the absorption tower (6), the top components of the absorption tower enter from the bottom of the reabsorption tower (24), and the top components of the reabsorption tower e...
Embodiment 2
[0056] Using 85wt% isobutane and 15wt% n-butane as light hydrocarbon raw materials, KCA-BL type light hydrocarbon upgrading catalyst to propane, in a fixed bed reactor, reaction starting temperature 320 ℃, reaction pressure 1.75MPa, light hydrocarbon raw material Mass airspeed 0.4h -1 , C4 full cycle, hydrogen-oil ratio of 150:1 to carry out the reaction.
[0057] The results show that the weighted average data in the whole cycle are: the conversion rate of butane per pass is 75.2%, the mass ratio of circulating C4 to fresh butane is 1:3, the dry gas yield is 2.38wt%, and the propane yield is 84.41wt% %, the yield of high-octane gasoline is 13.21%, and the one-way operation period is 110 days.
Embodiment 3
[0059] Using 85wt% isobutane and 15wt% n-butane as light hydrocarbon raw materials, KCA-BL type light hydrocarbon upgrading catalyst to propane, in a fixed bed reactor, reaction starting temperature 290 ℃, reaction pressure 1.75MPa, light hydrocarbon raw material Mass airspeed 0.4h -1 , C4 full cycle, hydrogen-oil ratio of 50:1 to carry out the reaction.
[0060] The results show that the weighted average data in the whole cycle are as follows: the conversion rate of butane in one pass is 73.8%, the mass ratio of circulating C4 to fresh butane is 1:2.3, the yield of dry gas is 2.58wt%, and the yield of propane is 81.41%. wt%, the yield of high-octane gasoline is 16.01%, and the single-pass operation period is 88 days.
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