Combined method of poor quality heavy oil processing - coke gasification
A low-quality heavy oil, combined method technology, applied in the petroleum industry, hydrocarbon oil cracking, production of combustible gas and other directions, can solve the problems of increased dry gas and coke content, decreased coke transfer agent activity, and poor selectivity, etc., to achieve yield Increases, improves product distribution, reduces yield
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Examples
Embodiment 1-1 and Embodiment 1-2
[0068] Example uses figure 1 The process flow shown is carried out.
[0069] In the laboratory fluidized bed reactor, the silica-alumina microsphere particles produced by spray drying technology are used as contact agent (the microreaction activity is 35, the average particle diameter is 85 μm, and the average pore diameter is 68nm), which makes them respectively compared with those in Table 1. The feed oil 1 and feed oil 2 shown are in contact and undergo a contact cracking reaction, the volume fraction of hydrogen in the fluidization gas is 80%, the conditions of the contact cracking reaction are as shown in Table 2, and the reaction pressure is 0.2 MPa. The reducing gas is hydrogen, and the conditions of the reducing reaction and the product distribution after treatment are shown in Table 2, and according to the different types of raw oil, Example 1-1 and Example 1-2 are respectively set.
[0070] Among them, the conditions in the gasification reaction include: the oxygen-...
Embodiment 2
[0077] This embodiment adopts figure 1 The process flow shown is carried out.
[0078] In the laboratory fluidized bed reactor, the silica-alumina microsphere particles produced by spray drying technology were used as the contact agent (the microreaction activity was 30, the average particle diameter was 76 μm, and the average pore diameter was 80nm), making it the same as that listed in Table 1. The raw material oil 1 shown is contacted and undergoes a contact cracking reaction, the volume fraction of hydrogen in the fluidization gas is 50%, the conditions of the contact cracking reaction are shown in Table 3, and the reaction pressure is 0.8 MPa. The reducing gas is a mixture of hydrogen and methane with a volume ratio of 1:1. The conditions of the reducing reaction and the product distribution after treatment are shown in Table 3. And according to different reducing conditions, embodiment 2-1, embodiment 2-2, embodiment 2-3 and embodiment 2-4 are set respectively.
[0079...
Embodiment 3
[0086] Present embodiment adopts the method similar to embodiment 1-1 to carry out, and difference is:
[0087] In this embodiment, the gasified contact agent that accounts for 30% of the mass flow rate of the spent agent flowing out in step (1) is recycled back to step (1) as the contact agent to carry out the contact cracking reaction, The remaining part is introduced into the regeneration unit and the reduction unit for regeneration and reduction respectively.
[0088] The rest are the same as in Example 1-1, and the results of this example are shown in Table 4.
[0089] Table 1
[0090]
[0091]
[0092] Table 2
[0093]
[0094] table 3
[0095]
[0096] Table 4
[0097] Raw oil
Raw oil 1
temperature, ℃
500
Airspeed, h -1
4
Agent oil weight ratio
7
Water to Oil Weight Ratio
0.2
Reduction condition
temperature, ℃
650
pressure, MPa
0.2
Product yield, wt%
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Abstract
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