Riser catalysis device for processing heavy oil and application thereof

A riser and heavy oil technology, applied in catalytic cracking, chemical instruments and methods, cracking, etc., can solve problems such as insufficient reaction depth, achieve the effects of overcoming insufficient reaction depth, avoiding vicious adsorption competition, and reducing temperature

CN102233253BActive Publication Date: 2013-11-06PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-11-06

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Abstract

The invention relates to a riser catalysis device for processing heavy oil and application thereof. An upper riser of a primary riser is an outlet section of which the radial diameter is equal to or less than that of a lower riser of the primary riser; the lower riser is provided with a lifting steam inlet, an inferior heavy oil inlet and a regenerative inclined pipe; an expanded riser is positioned at any position of 20 to 95 percent of the height of the primary riser; the height of the expanded riser is 20 to 75 percent of that of the primary riser; the ratio of the diameter of the expanded riser to that of the lower riser of the primary riser is (1.0-3.0):1; an interface of a secondary riser and the primary riser is positioned on the upper side or lower side of the expanded riser of the primary riser or on a middle lower part of the expanded riser; an inclined angle gamma at the interface of the primary riser and the secondary riser is 0 to 90 degrees. Therefore, severe adsorption competition between inferior materials and high-quality materials and reaction retardation are avoided, the problem that the inferior materials have insufficient reaction depth in a reactor is solved.
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Description

technical field

[0001] The invention relates to a catalytic device and application of petroleum hydrocarbons under non-hydrogen-facing conditions, more specifically, a riser catalytic cracking device for processing low-quality heavy oil and its application. Background technique

[0002] In order to strengthen the catalytic reaction in the reaction process, reduce thermal cracking reaction and unfavorable secondary reaction, the representative process technology is the two-stage riser catalytic cracking technology disclosed by CN1118539C, CN1262625C, etc., which is characterized by two-stage riser reaction Catalysts are used in series and relay mode to achieve the purpose of oil-gas series connection, catalyst relay, staged reaction, shortening reaction time and improving the average performance of catalysts. When this type of technology processes wax oil with better raw material properties, the yield of light oil is higher, especially the yield of diesel oil and cetane numbe...

Examples

Embodiment Construction

[0026] The riser catalytic device for processing heavy oil according to the present invention is composed of a main riser reactor, an auxiliary riser reactor, a gas-solid separation system and a regeneration device; the main riser reactor is located next to the regeneration device and is a variable-diameter lift The middle part of the main riser reactor is a diameter-expanding riser 7, and the upper riser 15 of the main riser is an outlet section whose radial direction is equal to or reduced in the radial direction of the lower riser of the main riser, and is connected with the gas-solid separation system The settler 9 of the main riser is connected, and the lower riser 5 is provided with a lifting steam inlet a1, an inferior heavy oil inlet 3, and a regeneration inclined pipe a16. The height of the pipe 7 accounts for 20-75% of the height of the main riser, and the ratio of the diameter of the expanded diameter riser 7 to the lower riser of the main riser is (1.0-3.0): 1;

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