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Method for directly fluid coking oil sand and apparatus

A fluidized bed and oil sand technology, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of secondary pollution and difficulty in large-scale continuous production of gasification technology, and achieve high comprehensive utilization and quality improvement. Effect

Active Publication Date: 2009-02-04
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a direct fluidized bed coking method and device for the processing and utilization of unconventional petroleum resources such as oil sands, so as to overcome the secondary pollution of the existing extraction technology and the difficulty of large-scale continuous gasification technology. production problem

Method used

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  • Method for directly fluid coking oil sand and apparatus
  • Method for directly fluid coking oil sand and apparatus
  • Method for directly fluid coking oil sand and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] See attached figure 1 , the oil sand direct fluidized bed coking device of the present embodiment comprises: coking reactor 6, circulation stripper 4, dilute-phase coking tube 16, dense-phase coking reactor 10, external heat extractor 14, feeder 7 and 17, cyclone separators 8 and 9, mixing heat exchange tank 23, shower head distributor 21, control valves 2, 11, 13, 15, 22 and 24, gas distributors 1, 3, 5 and 12, draft tube 18, center feeding pipe 19, sieve plate 20. The feeder 7 is connected to the coking reactor 6, a cyclone separator 8 is set in the settling space on the upper part of the coking reactor 6, a fluidization gas distributor 5 is set in the lower part, and a circulation stripper 4 is coaxially set directly below, and the coking reactor 6 and An inverted conical sieve plate 20 is arranged between the circulation stripper 4, and the center of the sieve plate 20 is connected to the central feeding pipe 19. The sieve plate 20 plays the role of supporting the ...

Embodiment 2

[0041] See attached figure 2 , the oil sand direct fluidized bed coking device of the present embodiment comprises: a coking reactor 6, a stripper 4, a dilute-phase coking tube 16, a dense-phase coking reactor 10, an external heat extractor 14, a feeder 7 and 17. Cyclone separators 8 and 9, control valves 2, 11, 13, 15 and 19, gas distributors 1, 3, 5 and 12, baffle 18 and quick separator 20. The feeder 7 is connected with the coking reactor 6, and the inferior heavy oil nozzle is installed outside the coking reactor 6, the cyclone separator 8 is arranged in the upper part of the settling space, and the fluidization gas distributor 5 is arranged in the lower part. The lower part of the coking reactor 6 is connected to the stripper 4 through an inclined pipe with a control valve 19, and a baffle 18 is set inside the stripper 4, and its function is to prolong the contact time between the particles and the stripping gas. Stripping steam distributor 3. The bottom of the strippe...

Embodiment 3

[0044] See attached image 3 , the oil sand direct fluidized bed coking device of the present embodiment comprises: coking reactor 6, circulation stripper 4, dilute-phase coking tube 16, dense-phase coking reactor 10, external heat extractor 14, feeder 7 and 17, cyclone separators 8 and 9, control valves 2, 11, 13 and 15, gas distributors 1, 3, 5 and 12, draft tube 18, central feeding pipe 19, sieve plate 20. The feeder 7 is connected to the coking reactor 6, and the low-quality heavy oil feeding nozzle is installed outside the coking reactor 6, the cyclone separator 8 is installed in the upper part of the settling space, the fluidization gas distributor 5 is arranged in the lower part, and the circulation stripper is coaxially arranged directly below 4. An inverted conical sieve plate 20 is set between the coking reactor 6 and the circulating stripper 4. The center of the sieve plate 20 is connected to the central feeding pipe 19. On the one hand, the sieve plate 20 plays a r...

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Abstract

The present invention provides a method and a device which are used for the direct coking of oil sand on a fluidized bed. The method is as follows: after being mixed with and exchanging heat with the high-temperature sand from a dense-phase coking-burning reactor, the oil sand material in a coking reactor undergoes coking reaction; the dedusted oil gas enters into a fractionation and absorption stabilization system; after being stripped by a stripper, tar sand is led into a dilute-phase coking-burning riser to be burnt in the dilute-phase coking-burning riser and the dense-phase coking-burning reactor above the dilute-phase coking-burning riser; and one flow of the burnt hot sand serving as a heat carrier is led into the coking reactor, and the other flow is led into an external heat collector for heat exchange. If the coke yield is low and the coke-burning heat is insufficient, burning oil, coal dust or coke powder can be added into the coking-burning riser in order to maintain the heat balance of the system. The device at least comprises a material feeder, the coking reactor, the stripper, the dilute-phase coking-burning riser, the dense-phase coking-burning reactor, the external heat collector and a cyclone separator. The device, which is characterized by strong continuous operability and high flexibility, can directly process unconventional petroleum resources such as oil sand and oil shales and does not pollute the environment, and the comprehensive energy utilization rate of the system is high.

Description

technical field [0001] The invention relates to a method and device for directly coking oil sand in a fluidized bed, belonging to the technical fields of coal chemical industry and petrochemical industry. Background technique [0002] In recent years, international crude oil prices have continued to rise, oil demand has continued to rise, and problems such as overexploitation and consumption of conventional oil resources have become increasingly prominent. With the increasing demand for oil in the world economy, conventional oil resources can no longer meet the rapid growth of oil demand, so it is necessary to increase the degree of processing and utilization of unconventional oil resources. Oil sands, also known as tar sands or tar sands, are unconventional petroleum resources. They are sand or sandstones containing bitumen or tar. They are usually a mixture of sand, bitumen, minerals, clay and water. The bitumen content is 3% to 20%, sand and clay account for 80% to 85%, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
Inventor 卢春喜徐春明李术元高金森
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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