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Method for improving hydrogenation production of gasoline and diesel oil by coal tar

A technology for coal tar, gasoline and diesel, which is applied in the field of improving the hydrogenation of coal tar to produce gasoline and diesel, can solve the problems of low added value, low yield of gasoline and diesel, environmental pollution, etc. The effect of secondary pollution

Inactive Publication Date: 2013-01-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the purpose of rational utilization of resources and environmental protection, in view of the many disadvantages of the coal tar process, serious environmental pollution, low added value, low yield of gasoline and diesel, etc., through the organic combination of catalytic distillation, delayed coking and hydrofining to achieve coal tar production Resource utilization of tar and conversion into gasoline and diesel with high added value and high yield that meet the requirements

Method used

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  • Method for improving hydrogenation production of gasoline and diesel oil by coal tar
  • Method for improving hydrogenation production of gasoline and diesel oil by coal tar
  • Method for improving hydrogenation production of gasoline and diesel oil by coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Coal tar is divided into light oil (o C) and heavy oil (o C). The following table 1 sees the atmospheric distillation mass balance test results

[0020]

Embodiment 2

[0021] Embodiment 2: heavy oil (o C) Light oil is obtained after delayed coking. See Table 2 below for delayed coking material balance test results

[0022]

Embodiment 3

[0023] Example 3: Gas-phase catalytic cracking of coal tar over a molecular sieve / alumina catalyst. After delayed coking, heavy oil is mixed with light oil and injected into a reactive distillation column equipped with molecular sieve / alumina catalyst for catalytic distillation. The catalyst is composed of alumina containing 35% ZSM-48 and 15% mordenite. A columnar product of 2.0-3.0 mm in length, 3-8 mm in length, 0.65-0.80 g / mL in bulk density, and greater than 40 N / mm in strength can be obtained by bonding molding. The waste residue and gas generated during the coal tar conversion process are used for heating, and the agent-oil ratio is controlled between 1-20. The gas produced is used to heat the distillation column. The following table 2 sees the catalytic distillation mass balance test results

[0024]

raw material

water content

Pyrolysis oil quality

Catalyst adsorption

Charcoal residue

gas + loss

Mass / g

1800

27

14...

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Abstract

The invention discloses a method for improving hydrogenation production of gasoline and diesel oil by coal tar, and belongs to the fields of coal chemical industry and energy technology. The invention is characterized in that the method comprises the following steps: distilling coal tar for separation to obtain light oil (360 DEG C) and heavy oil (360 DEG C), performing delayed coking of the heavy oil, mixing with the light oil, adding the mixed oil into a reaction distillation tower for catalytic cracking and fractionation, introducing the oil gas after catalytic cracking into a hydrogenation reaction tower for hydrorefining, distilling the reaction product to obtain high-quality distillate of gasoline and diesel oil. A catalytic distillation catalyst and a sulfide catalyst used in the invention are prepared by appropriate carriers and active components through a liquid phase method, wherein the appropriate carriers and active components are selected base on the composition and performance of the coal tar. The method of the invention is simple in process, high in catalyst activity and selectivity, low in residual charcoal, and high in gasoline and diesel oil yield, provides a new approach for the utilization of coal tar, and has good economic benefits and industrial application prospects.

Description

technical field [0001] The invention belongs to the fields of energy technology and environmental protection, and relates to a method for improving the hydrogenation of coal tar to produce gasoline and diesel. Background technique [0002] In the process of coal chemical industry, coal tar is one of the important products of coking industry, its output accounts for about 3%~4% of the furnace coal, its composition is extremely complex, and its annual output is about 15.00 Mt. According to the different coal carbonization temperature, it can be divided into high-temperature coal tar, medium-temperature coal tar and low-temperature coal tar. The composition and properties of the three are different, and their processing and utilization methods are different. At present, part of the high-temperature coal tar is used to extract chemical products, most of the medium / low temperature coal tar and a small amount of high-temperature coal tar are used as fuel for extensive combustion. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCY02P20/10
Inventor 梁长海李闯陈霄汪镭肖子辉
Owner DALIAN UNIV OF TECH
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