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Coal tar whole-fraction fluidized bed hydrogenation method

A technology of whole fraction and coal tar, which is applied in the field of hydrogenation to achieve the effects of improving the effect of hydrogenation reaction, reducing investment and operating costs, and improving mass transfer rate

Active Publication Date: 2017-10-27
上海竣铭化工工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a method for hydrogenation of a full-fraction ebullated bed of coal tar. On the basis of the prior art, it can effectively solve the problem of stable operation in the hydrogenation of a full-fraction ebullated bed of coal tar, thereby improving the hydrogenation efficiency of the hydrogenation process. hydrogen efficiency

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  • Coal tar whole-fraction fluidized bed hydrogenation method
  • Coal tar whole-fraction fluidized bed hydrogenation method
  • Coal tar whole-fraction fluidized bed hydrogenation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] With the coal tar full distillate of table 1 as raw material, according to figure 1 The treatment method for hydrotreating:

[0064] (1) The whole fraction of coal tar is heated to 390°C, and mixed with the circulating oil of the ebullated bed reactor according to the volume mixing ratio of the full fraction of coal tar and circulating oil of 1:2;

[0065] (2) The mixture of step (1) is mixed with hydrogen in a hydrogen mixer to dissolve the hydrogen. The amount of hydrogen is determined according to the volume ratio (under standard conditions) of 260:1 to the whole fraction of coal tar. The hydrogen mixer uses conventional microbubbles Mixer, that is, hydrogen is dispersed into the oil phase through microbubble dispersion equipment, and then enters the gas-liquid separator;

[0066] (3) The gas phase at the top of the gas-liquid separator in step (2) enters the fixed-bed hydrogenation reactor from the top of the reactor, and the liquid phase dissolved in hydrogen at t...

Embodiment 2

[0075] With the coal tar full distillate of table 1 as raw material, according to figure 1 The treatment method for hydrotreating:

[0076] (1) The whole fraction of coal tar is heated to 390°C, and mixed with the circulating oil of the ebullated bed reactor according to the volume mixing ratio of the full fraction of coal tar and circulating oil of 1:2;

[0077] (2) The mixture of step (1) is mixed with hydrogen in a hydrogen mixer to dissolve hydrogen. The amount of hydrogen is determined according to the volume ratio (under standard conditions) of 600:1 to the whole fraction of coal tar. The hydrogen mixer uses conventional microbubbles Mixer, that is, hydrogen is dispersed into the oil phase through microbubble dispersion equipment, and then enters the gas-liquid separator;

[0078] (3) The gas phase at the top of the gas-liquid separator in step (2) enters the fixed-bed hydrogenation reactor from the top of the reactor, and the liquid phase dissolved in hydrogen at the b...

Embodiment 3

[0086] With the coal tar full distillate of table 1 as raw material, according to figure 1 The treatment method for hydrotreating:

[0087] (1) The whole fraction of coal tar is heated to 390°C, and mixed with the circulating oil of the ebullated bed reactor according to the volume mixing ratio of the full fraction of coal tar and circulating oil of 1:2;

[0088] (2) The mixture of step (1) is mixed with hydrogen in a hydrogen mixer to dissolve hydrogen. The amount of hydrogen is determined according to the volume ratio (under standard conditions) of 200:1 to the whole fraction of coal tar. The hydrogen mixer uses conventional microbubbles Mixer, that is, hydrogen is dispersed into the oil phase through microbubble dispersion equipment, and then enters the gas-liquid separator;

[0089](3) The gas phase at the top of the gas-liquid separator in step (2) enters the fixed-bed hydrogenation reactor from the top of the reactor, and the liquid phase dissolved in hydrogen at the bo...

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Abstract

The invention relates to a coal tar whole-fraction fluidized bed hydrogenation method which comprises the following steps: (1) heating coal tar whole fraction and mixing with circulation oil of a fluidized bed reactor; (2) mixing the mixture in the step (1) and hydrogen, dissolving the hydrogen, and enabling the mixture to enter a gas-liquid separator; (3) enabling a gaseous phase on the top of the gas-liquid separator in the step (2) to enter a fixed bed hydrogenation reactor from the top of the reactor, and enabling a liquid phase to enter the fluidized bed reactor from the bottom of the reactor so as to carry out a hydrogenation reaction; and (4) arranging a three-phase separator on the upper part inside the fluidized bed reactor in the step (3), discharging the gaseous phase separated from the three-phase separator from the top of the fluidized bed reactor to the fixed bed hydrogenation reactor in the step (3), and taking at least one part of the liquid phase through a circulatory system as the circulation oil in the step (1). Compared with the prior art, the method disclosed by the invention has the advantages that the steady operation problem existing in coal tar whole-fraction fluidized bed hydrogenation can be effectively solved, and the coal tar whole-fraction fluidized bed hydrogenation reaction effect is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation, and in particular relates to a method for hydrogenation in an ebullated bed, in particular to a method for hydrogenation in an ebullated bed with whole fractions of coal tar. Background technique [0002] Coal dry distillation and coal gasification are important components of the coal chemical process, and the raw materials are mostly non-caking coal or weakly caking coal. Lignite, long-flame coal, gas coal and other non-caking coals or weakly caking coals are rich in organic matter, and produce more coal tar during dry distillation. With the rapid development of my country's coal pyrolysis industry, the annual output of coal tar continues to rise, and the production of fuel oil products through catalytic hydrogenation of coal tar is of great significance to alleviate the shortage of my country's oil supply. Coal tar contains certain solid impurities, more sulfur, nitrogen, metal and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02
Inventor 王小英
Owner 上海竣铭化工工程设计有限公司
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