Method for preparing liquid fuel from coal petrography oil-gas reservoir

A liquid fuel, oil and gas reservoir technology, applied in the petroleum industry, hydrogen production, processing of hydrocarbon oil, etc., can solve the problems of unsatisfactory reaction effect, lack of treatment methods for residues, etc., to achieve low investment cost and operating cost, improve Value, the effect of simplifying the process

Inactive Publication Date: 2011-05-04
金军 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the past, the selection of heavy oil and coal is often isolated, and at the same time, there is no good treatment method for the residue, so the effect of the reaction is not ideal

Method used

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  • Method for preparing liquid fuel from coal petrography oil-gas reservoir
  • Method for preparing liquid fuel from coal petrography oil-gas reservoir
  • Method for preparing liquid fuel from coal petrography oil-gas reservoir

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] Example 1 hot melting and dispersion

[0048] Take 1kg of natural heavy crude oil from Shengli Oilfield (density at 20°C is 950kg / m 3 , H / C molar ratio is 1.61), and 0.6kg Shandong Huangxian lignite. Crush coal into coal powder, 100-200 mesh. Huangxian coal was formed in the third Shahejie Formation of the Tertiary system, which is the same as the natural heavy crude oil in Shengli Oilfield, and is also the third Shahejie Formation of the Tertiary system, and its properties are shown in Table 1.

[0049] Table 1. Industrial analysis and elemental data of lignite in Huangxian, Shandong

[0050] Industrial Analysis

Elemental analysis

Moisture M ad , wt% 9.55

C, weight% 77.39

Ash A d , wt% 11.86

H, wt% 5.53

Volatile V daf , wt% 45.11

N, weight% 2.14

S, weight% 0.77

O, wt% 14.17

[0051] After mixing and stirring, age for 24 hours, add 0.5% by weight of co-solvent 1,4-bis(2-ethylhexyl) sodiu...

example 2

[0054] The hydrocracking of example 2 sol phase

[0055] Use JQ-100 heavy oil hydrogenation high-pressure micro-reactor device. The hydrocracking catalyst used is iron chromium lignosulfonic acid (FeCr-LS), and the hydrocracking catalyst accounts for 1.5% by weight of the sol phase. M in sol phase ad ≤0.1 wt%, A ad ≤0.2% by weight, H / C=1.52 (molar ratio), O / C=0.048, density (20°C)=1050kg / m 3 . The reactant outlet temperature is 430°C, and the initial hydrogen partial pressure is 5.6MPa. As a result, the density of hydrogenated distillate oil (20°C) = 900kg / m 3 , H / C increased to 1.78, its A ad ≤0.05%. H / C of hydrogenated residual oil=1.28 (molar ratio).

example 3

[0056] Coking reaction of example 3 gel phase and hydrogenated residual oil

[0057] The coking tests were carried out on a delayed coking medium-sized unit. The oil-coal slurry enters the heating furnace, and after being heated to 490°C, it enters the coke tower for coking reaction. The coke generated by the reaction is deposited in the coke tower, and the coked oil gas enters the fractionating tower to fractionate into coking gas and coking oil. The operating conditions and material balance are listed in Table 3, the distillation range of coker oil is listed in Table 4, and the properties of coke are listed in Table 5.

[0058] Table 3 coking operating conditions and material balance

[0059] Coking operating conditions

temperature, ℃

490

Pressure (gauge pressure), MPa

0

Coking material balance

Coking gas, wt%

7.5

Coker oil, weight %

37.5

Coke, wt%

51.3

water, wt%

3.7

[...

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Abstract

The invention provides a method for preparing a liquid fuel from a coal petrography oil-gas reservoir, which comprises the steps: mixing coal powder with heavy oil, aging, thermally melting and dispersing to obtain oil coal slurry, and performing phase separation on the oil coal slurry to obtain liquid hydrocarbon, sol phase and gel phase, wherein the sol phase is cracked in a hydrogenation way, and the gel phase is coked. The method can obtain the qualified liquid fuel only by simply improving the existing refinery equipment, thereby avoiding the complex reaction process that the coal is directly liquefied and is indirectly liquefied. Therefore, the method realizes the development or the separation of the oil in the coal petrography oil-gas reservoir under the real mitigatory condition, thereby being low in investment cost and operation cost. The residue which is generated by the coal-oil co-treatment is subjected to the coking treatment, thus being good for environment and improving the yield of the liquid fuel.

Description

technical field [0001] The invention belongs to a method for preparing liquid fuel from coal rock oil and gas reservoirs. Background technique [0002] Coal is a combustible mineral formed by organisms grown in a certain geological age in a suitable geological environment after a long period of coalification. According to the different coal-forming plants, coal can be divided into two categories, namely humic coal and sapropetic coal. The former originates from higher plants and has large reserves and wide distribution in nature; the latter originates from lower plants and plankton and has less reserves. [0003] Whether it is terrestrial or aquatic biodeposited organic matter, they can both form oil and coal, but the amount of formation is different, and there is no clear boundary between coal-forming and hydrocarbon-forming components. Ideally, the organic matter at the edge of the sedimentary basin is mainly vitrinite and inertinite, which are easy to form coal seams; i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10G65/00C10B55/00C01B3/02
Inventor 金军牛嘉玉王好平侯创业杨元一
Owner 金军
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