A method for producing upgraded oil from oil sands and co-producing steam

A technology for oil sand and steam, which is applied in the field of oil sand production, modified oil and co-production of steam

Active Publication Date: 2017-03-15
PETROCHINA CO LTD
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Problems solved by technology

[0006] The purpose of the present invention is to provide a process for oil sand production of modified oil and co-production of steam, to solve the problem of heat balance in the oil sand fluidization heat treatment process, and to realize optimal utilization of energy

Method used

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  • A method for producing upgraded oil from oil sands and co-producing steam

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Embodiment

[0011] Example: Comprehensive Utilization of Oil Sands in Xinjiang

[0012] The property data of oil sands in a block in Xinjiang are as follows: asphaltenes 9.55w%, moisture 1.55w%, minerals 88.9w%.

[0013] After the fresh oil sand material is crushed, the bulk density is 1.37g / cm 3 , particle density, 2250kg / m 3 , angle of repose, 38°. It enters the fluidized bed reactor through the feeder, and there are two other materials in the lower part of the reactor, high-temperature circulating gravel at 700°C, and circulating asphalt at 350°C. The three materials are mixed and contacted in the reactor. contact reaction under conditions.

[0014] In this treatment process, the sand and gravel circulation rate / fresh oil sand feed is controlled to be 6, 50% of the fractionation tower bottom residue (fraction above 500°C) is returned to the reactor, and the remaining fractions are blended to obtain upgraded oil. The product distribution data after normalization is: gas 6.5w%, modif...

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Abstract

The invention relates to a method for co-production of steam during production of modified oil directly from oil sand. The method includes: subjecting oil sand to crushing and sieving, making the obtained powdery asphaltic sand enter a circulating fluidized bed reactor through a charging system to undergo contact heat transfer with high temperature sand, under the action of heat, letting the petroleum components attached to the oil sand crack and gasify and simultaneously generate a small amount of coke, making the generated oil gas pass through a condensation fractionating tower, and pumping part of the kettle bottom residual oil back to the reactor; and discharging the coke attached grit from the lower part of the reactor, letting the grit enter a scorching device through a circulating conveying pipeline to make coke burns under an oxygen-enriched condition, and circulating part of heat-carrying grit back to the reactor to provide a heat source for oil sand treatment, and letting the other part of grit provide a heat source for a steam generating system through heat transfer. The process can produce modified oil with good quality from oil sand and simultaneously produce a lot of steam, so that the energy can be fully utilized.

Description

technical field [0001] The invention relates to a method for producing modified oil from oil sand and co-producing steam. Background technique [0002] It is predicted that my country's oil consumption will reach 570 million tons in 2020, when my country's oil production will only be 180-200 million tons, imported oil will be 380 million tons, and the dependence on foreign crude oil will be as high as 67%. As conventional oil reserves are decreasing day by day, unconventional oil resources—oil sands will become one of the important energy resources in the 21st century. The use of oil sands to produce clean and light oil products is the only way to deal with the shortage of oil resources. [0003] Oil sand, also known as tar sand, is a kind of sandstone or sandstone with asphalt or other heavy oil attached, and its composition is a mixture of asphalt, water, sand grains and clay minerals. Oil sands are widely distributed and rich in reserves, and their global recoverable re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10B53/06F22B1/04
CPCC10B53/06C10G1/00F22B1/04
Inventor 刘银东付兴国张艳梅侯经纬张璐瑶卢竟蔓许倩
Owner PETROCHINA CO LTD
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