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Fluidized bed hydrogenation system and method of high solid content coal tar

A high solid content, ebullating bed technology, applied in the field of coal chemical industry, can solve the problems of high raw material oil requirements, increased equipment investment and process complexity, and inability to deal with high solid content coal tar, so as to avoid insufficient preheating , Product quality is stable, and the effect of avoiding loss

Active Publication Date: 2017-05-24
胜帮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Although the existing techniques have been able to solve the technical problems in the coal tar hydrogenation process to a large extent, these processes generally have high requirements on the raw material oil and cannot handle coal tar with high solid content. For dusty coal tar, the raw material oil Before entering the reaction system, a complex impurity removal process is required, which greatly increases the complexity of equipment investment and process flow

Method used

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  • Fluidized bed hydrogenation system and method of high solid content coal tar
  • Fluidized bed hydrogenation system and method of high solid content coal tar
  • Fluidized bed hydrogenation system and method of high solid content coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A fluidized bed hydrogenation system for high solid content coal tar, such as figure 1 shown. The system includes an ebullated bed hydrogenation reactor 3, and the system also includes a high solid content coal tar supply device, a hydrogen supply device, a catalyst online supply device 8, a catalyst online unloading device 9, a first preheater 1, a first Two preheaters 2, gas-solid separation device 7, gas-liquid separation device 4 and fractionation device 5;

[0074] The bottom of the ebullated bed hydrogenation reactor 3 is provided with a feed inlet, the upper part is provided with a catalyst inlet and a reaction product outlet, and the bottom is provided with a discharge port; The feed port of the hydrogen reactor 3 is connected; the hydrogen supply device is connected with the feed port of the ebullated bed hydrogenation reactor through the second preheater 2; the catalyst online supply device 8 is connected with the ebullated bed hydrogenation reactor 3 The ca...

Embodiment 2

[0093] A kind of high solid content tar produced by pulverized coal pyrolysis, the raw material properties are shown in Table 1.

[0094] Table 1

[0095]

[0096]

[0097] Wherein, the IBP refers to initial boiling point.

[0098] Utilizing the method described in Example 1, the above-mentioned pulverized coal pyrolysis tar with high solid content was used as a raw material for catalytic hydrogenation reaction. The process conditions and product properties are shown in Table 2. Wherein, the catalyst is a supported spherical metal alloy catalyst, the metal components are cobalt and nickel, the carrier is modified alumina, and the modification element is sulfur; the diameter of the catalyst is 0.1-0.5mm, and the specific surface area is 400-450m 2 / g, the bulk density is 0.8~1.2g / cm 3 , taking the mass of the whole distillate coal tar as the basis for calculation, and the amount of catalyst added is 200 μg / g.

[0099] Table 2

[0100]

[0101]

Embodiment 3

[0103] The method described in Example 1 was used to carry out catalytic hydrogenation reaction using the high solid content tar from pulverized coal pyrolysis as described in Example 2. The process conditions and product properties are shown in Table 3. Wherein, the catalyst is a supported spherical metal alloy catalyst, the metal components are molybdenum and tungsten, the carrier is modified alumina, and the modifying element is sulfur; the diameter of the catalyst is 0.05mm, and the specific surface area is 450m 2 / g, the bulk density is 0.5g / cm 3 , taking the mass of the whole distillate coal tar as the basis for calculation, and the amount of catalyst added is 75 μg / g.

[0104] table 3

[0105]

[0106]

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Abstract

The invention provides a fluidized bed hydrogenation system and method of high solid content coal tar. The system comprises a fluidized bed hydrogenation reactor, a high solid content coal tar supply device, a hydrogen supply device, a catalyst on-line supply device, a catalyst on-line unloading device, a first preheater, a second preheater, a gas-solid separation device, a gas-liquid separation device and a fractionation device; the catalyst on-line supply device is connected to a catalyst inlet of the fluidized bed hydrogenation reactor, and the catalyst on-line unloading device is connected to a feed outlet of the fluidized bed hydrogenation reactor; a reaction product outlet is connected to a feed inlet of the gas-liquid separation device through the gas-solid separation device, the gas-liquid separation device is provided with a hydrogen outlet and a product oil outlet, and the product oil outlet is connected to a feed inlet of the fractionation device. The fluidized bed hydrogenation system and method of the high solid content coal tar is used for a catalyst hydrogenation reaction of the high solid content coal tar, there is no need to conduct pretreatment to remove solid impurities, and the fluidized bed hydrogenation method has the advantages of being simple in technological process, flexible to operate, easy to control, high in conversion rate, long in running cycle and the like.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and relates to a system and method for treating dusty coal tar ebullating bed hydrogenation with high solid content, in particular to a catalytic hydrogenation system and method for high solid content dusty coal tar ebullating bed hydrogenation obtained by pyrolysis of pulverized coal Hydrogen process method. Background technique [0002] my country is a country that uses coal as the main energy source. In recent years, the domestic coal chemical industry has developed rapidly, and coal-to-oil has begun to take shape. Coal tar is the main by-product of coal pyrolysis to make coke. Its components are generally complex. It contains high content of polycyclic aromatic hydrocarbons, ash, colloids and asphaltenes, and contains heteroatoms such as nitrogen and sulfur. Direct use as fuel not only reduces the value of resources, but also Moreover, it causes serious pollution to the enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/14C10G45/08
CPCC10G45/08C10G45/14C10G2300/1037C10G2300/4006C10G2300/4087C10G2300/70C10G2400/30
Inventor 王昊沈和平
Owner 胜帮科技股份有限公司
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