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Coal tar whole-fraction hydrogenation method

A technology for coal tar and full distillate, applied in the field of coal chemical industry, can solve the problems of high operation cost, complex process, long process, etc., and achieve the effects of safe and stable operation, simple process and high product conversion rate.

Active Publication Date: 2012-11-28
SHENMUFUYOU ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent whose patent publication number is CN1351130A, its main production method is that the coal tar is first separated by distillation, and the fractionated light fraction below 370°C is subjected to hydrogenation and upgrading. The main disadvantage is that the raw material coal tar is not fully utilized.
The disadvantage of this method is that the process is complicated, the amount of catalyst is large, and the operating cost is high.
The disadvantage of this process is: the process is complex, and part of the coal tar is converted into coke, and the coal tar resource is not fully utilized.
The main disadvantages of this process are: too many reactors are required, the process is too long, and the investment is large
The disadvantage of this process is that the process is more complicated and the investment is larger.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Taking 100L low-temperature coal tar as a raw material as an example, the method for hydrogenating the whole fraction of coal tar includes the following steps:

[0025] Step 1: Take 100L low-temperature coal tar and remove moisture, metals, and solid impurities in the purification device to complete the purification process of the whole fraction;

[0026] Step 2: Dissolve the purified coal tar and hydrogen in a hydrogen dissolving kettle under the conditions of 180°C, 5MPa, hydrogen-oil volume ratio of 1400:1, and hydrogen dissolving time of 25 minutes, so that the hydrogen can be fully dissolved in the coal tar. Obtain a liquid material with gas-liquid equilibrium;

[0027] Step 3: In the first trickle bed reactor, use RG-1 hydrogenation protection agent, FZC-200 type hydrodemetallization agent and RMS-1 type hydrodesulfurization agent in the first trickle bed reactor at 310°C , the pressure is 12MPa, the liquid volume space velocity is 1.3m 3 h -1 / m 3 1. The firs...

Embodiment 2

[0038] Taking 100L low-temperature coal tar as a raw material as an example, the method for hydrogenating the whole fraction of warm coal tar includes the following steps:

[0039] Step 1: Same as Example 1.

[0040]Step 2: Dissolve the purified coal tar and hydrogen in a hydrogen dissolving kettle under the conditions of 250°C, 3MPa, hydrogen-oil volume ratio 1800:1, and hydrogen dissolving time of 40 minutes to obtain a liquid material with gas-liquid balance;

[0041] Step 3: In the first trickle bed reactor, use RG-1 type hydrogenation protection agent, FZC-200 type hydrodemetallization agent and RMS-1 type hydrodesulfurization agent in the first trickle bed reactor to obtain the liquid material with gas-liquid balance. 360°C, pressure 9MPa, liquid volume space velocity 2.6m 3 h -1 / m 3 , the first catalytic hydrogenation reaction was carried out under the condition that the volume ratio of hydrogen to oil was 1800:1, the volume percentage of the RG-1 hydrogenation prot...

Embodiment 3

[0044] Taking 100L low-temperature coal tar as raw material as an example, the method for the hydrogenation of the whole fraction of coal tar comprises the following steps:

[0045] Step 1: Same as Example 1.

[0046] Step 2: Dissolve the purified coal tar and hydrogen in a hydrogen dissolving kettle at 150°C, 8MPa, hydrogen-oil volume ratio of 800:1, and hydrogen dissolving time of 15 minutes to obtain a liquid material with gas-liquid balance;

[0047] Step 3: In the first trickle bed reactor, use RG-1 type hydrogenation protection agent, FZC-200 type hydrodemetallization agent and RMS-1 type hydrodesulfurization agent in the first trickle bed reactor to obtain the liquid material with gas-liquid balance. 260℃, pressure 14MPa, liquid volume space velocity 0.28m 3 h -1 / m 3 , the first catalytic hydrogenation reaction was carried out under the condition that the volume ratio of hydrogen to oil was 900:1. The volume percentage of hydrogen demetallization agent is 10%, the...

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Abstract

The invention relates to a coal tar whole-fraction hydrogenation method. Medium / low-temperature coal tar whole-fractions are used as raw materials, catalytic hydrogenation and distillation treatments are carried out in a trickle bed reactor through a hydrogenation protective agent, a hydrodemetallization agent, a hydrodesulfurization agent, a hydrodenitrogenation agent and a hydrocracking agent, and then a gasoline fraction and a diesel oil fraction are cut. The coal tar whole-fraction hydrogenation method is simple in process flow; a product is high in conversion rate and high in quality; and the whole process is safe and stable in operation.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a method for producing fuel oil by catalytic hydrogenation in a trickle bed reactor, using the whole fraction of medium / low temperature coal tar as a raw material. Background technique [0002] Coal tar is a liquid product obtained in the process of dry distillation or pyrolysis and gasification of coal. According to different production methods, the following four types of coal tar can be obtained: high-temperature coking coal tar, referred to as high-temperature coal tar (900-1000°C); medium-temperature vertical furnace coal tar, referred to as medium-temperature coal tar (700-900°C); Producer coal tar, referred to as medium / low temperature coal tar (600-800°C); low-temperature pyrolysis coal tar, referred to as low-temperature coal tar (450-650°C). [0003] In recent years, with the rapid development of my country's coal pyrolysis industry, the annual output ...

Claims

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Application Information

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IPC IPC(8): C10G67/14
Inventor 杨占彪王树宽
Owner SHENMUFUYOU ENERGY TECH
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