Catalytic conversion method for preparing light fuel oil and propylene
A light fuel oil, catalytic conversion technology, applied in catalytic cracking, cracking, organic chemistry, etc., can solve the problems of dry gas and coke yield increase, and achieve the reduction of oil slurry yield, increase of operation cycle, and improvement of properties Effect
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Embodiment approach 1
[0044] The preferred technical solution of this embodiment comprises the following steps:
[0045] (1) The preheated inferior raw material oil enters the first reaction zone of the first reactor to contact with the hot regenerated catalyst, the reaction temperature is 510°C-650°C, preferably 520°C-600°C, and the reaction time is 0.05 seconds ~1.0 second is preferably 0.1 second~0.5 seconds, the weight ratio of catalyst and feedstock oil (hereinafter referred to as agent-oil ratio) is 3~15:1, preferably 4~12:1, the weight ratio of steam and feedstock oil ( hereinafter referred to as water-oil ratio) is 0.03-0.3:1, preferably 0.05-0.2:1, and the pressure is 130kPa-450kPa; (3) One or more of the catalytic wax oil after the hydrogenation, the raffinate oil of the catalytic wax oil described in step (3) are mixed and then go up to the second reaction zone of the first reactor, at the reaction temperature Cracking reaction, hydrogen transfer reaction and isomerization reaction are ...
Embodiment approach 2
[0050] The preferred technical solution of this embodiment comprises the following steps:
[0051] (1) The preheated inferior raw material oil enters the first reaction zone of the first reactor to contact with the hot regenerated catalyst, the reaction temperature is 510°C-650°C, preferably 520°C-600°C, and the reaction time is 0.05 seconds ~1.0 second is preferably 0.1 second~0.5 seconds, the weight ratio of catalyst and feedstock oil (hereinafter referred to as agent-oil ratio) is 3~15:1, preferably 4~12:1, the weight ratio of steam and feedstock oil ( hereinafter referred to as water-oil ratio) is 0.03-0.3:1, preferably 0.05-0.2:1, and the pressure is 130kPa-450kPa; (3) One or more of the catalytic wax oil after the hydrogenation, the raffinate oil of the catalytic wax oil described in step (3) are mixed and then go up to the second reaction zone of the first reactor, at the reaction temperature Cracking reaction, hydrogen transfer reaction and isomerization reaction are ...
Embodiment 1
[0077] This example follows the attached figure 1 The process of vacuum residue oil A is used as the raw material for catalytic cracking, and the test is carried out on the medium-sized device of the riser reactor. The inferior raw material enters the bottom of the first riser reaction zone I, contacts with the catalyst GZ-1 and occurs Reaction, at the bottom of reaction zone I, poor-quality raw materials at a reaction temperature of 600°C and a weight hourly space velocity of 100h -1 , the weight ratio of catalyst to raw material is 6, and the weight ratio of steam to raw material is 0.05, and the cracking reaction is carried out; in the first riser reaction zone II, oil gas is mixed with circulating propane, C4 hydrocarbons and diesel oil at a reaction temperature of 500°C , weight hourly space velocity 30h -1 The cracking reaction is carried out under the condition that the weight ratio of water vapor to raw material is 0.05, the oil gas and the catalyst to be charred are ...
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