Combination method for hydrocracking of coal tar whole-fraction suspended bed and hydro-upgrading of fixed bed

A hydrocracking and hydro-upgrading technology, which is applied in hydroprocessing process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problem of low utilization rate of coal tar, incomplete utilization of coal tar, reduction of catalyst activity and service life, etc. problems, to achieve the effect of large promotion and application prospects, good product properties, and less coke

Active Publication Date: 2015-09-30
INNER MONGOLIA SHENGYUAN TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The invention provides a combined method of suspended bed hydrocracking and fixed bed hydrogenation upgrading of the whole fraction of coal tar, which solves the problem of low utilization rate of coal tar in the existing coal tar hydrogenat

Method used

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  • Combination method for hydrocracking of coal tar whole-fraction suspended bed and hydro-upgrading of fixed bed
  • Combination method for hydrocracking of coal tar whole-fraction suspended bed and hydro-upgrading of fixed bed
  • Combination method for hydrocracking of coal tar whole-fraction suspended bed and hydro-upgrading of fixed bed

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of oil-soluble metal catalyst:

[0032] Get 10g molybdenum metal mass fraction and be 3.0% molybdenum naphthenate and 10g nickel metal mass fraction be the nickel naphthenate of 7.0%, mix and make oil-soluble liquid catalyst, the total mass of molybdenum metal and nickel metal accounts for catalyst mass in this catalyst of 5.0%.

[0033] (2) The preparation method of vulcanizing agent is:

[0034] Just take 2g elemental sulfur.

[0035] (3) the preparation method of coke inhibitor is:

[0036] Take 3g of cetyltrimethylammonium bromide and 2g of oleic acid, and mix them to obtain a coke inhibitor.

[0037] (4) The prepared oil-soluble liquid catalyst, vulcanizing agent and coke inhibitor are directly mixed.

[0038] Under the condition of 50-80°C, directly mix the oil-soluble metal catalyst, vulcanizing agent and coke suppressor to obtain the soluble compounding agent.

[0039] The mass ratio of the total metal mass, sulfur element mass and coke inhibi...

Embodiment 2

[0041] (1) Preparation of oil-soluble metal catalyst:

[0042] Get 10g molybdenum metal mass fraction and be 3.0% molybdenum naphthenate and 10g nickel metal mass fraction be the nickel naphthenate of 7.0%, 5g cobalt metal mass fraction 4%, mix and make oil-soluble liquid catalyst, in this catalyst, molybdenum metal The total mass of nickel metal and cobalt metal accounts for 4.2% of the mass of the catalyst.

[0043] (2) The preparation method of vulcanizing agent is:

[0044] Just take 5g elemental sulfur.

[0045] (3) the preparation method of coke inhibitor is:

[0046] Take 3g of sodium dodecyl sulfonate, 2g of oleic acid and 2g of coco fatty amine, and mix them to obtain a coke inhibitor.

[0047] (4) The prepared oil-soluble liquid catalyst, vulcanizing agent and coke inhibitor are directly mixed.

[0048] Under the condition of 50-80°C, directly mix the oil-soluble metal catalyst, vulcanizing agent and coke suppressor to obtain the soluble compounding agent.

[00...

Embodiment 3

[0052] Such as figure 1 Shown, a kind of coal tar full-fraction suspension bed hydrocracking and fixed bed hydrogenation upgrading combined method, comprises the following steps:

[0053] (1) The raw material is carried out atmospheric shunt through the first atmospheric fractionation tower, obtains naphtha fraction, diesel oil fraction and atmospheric residue, and the oil-soluble composite agent prepared by atmospheric residue and embodiment 1 passes through multi-stage buffer tank Mixing with a multi-stage static mixer, this mixing method can ensure that a small amount of compounding agent is evenly dispersed in a large amount of raw materials. The mixture is then mixed with fresh hydrogen and circulating hydrogen and enters the heating furnace. After being heated by the heating furnace to 425-455°C, it enters the suspension bed hydrocracking reactor from the bottom. Under the conditions of reaction pressure 10-20MPa and reaction temperature 420-450°C carry out hydrocrackin...

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Abstract

The invention provides a combination method for hydrocracking of a coal tar whole-fraction suspended bed and hydro-upgrading of a fixed bed. In the method disclosed by the invention, a slurry-bed hydrocracking reactor is a circulating reactor, an adopted catalyst is a high-activity oil-soluble dispersible compound, and the adopted catalysts are a supported hydrorefining catalyst and a hydrocracking catalyst. In the process, the adopted reaction pressure is 12-20 MPa, the volume ratio of hydrogen to oil is 500-1200 Nm<3>/m<3>, the reaction temperature is 350-450 DEG C, and the volume space velocity is 0.3-1.5/h. In the process, when coal tar whole-fractions are treated, the yields of naphtha, diesel oil and vacuum gas oil are 85-90 wt % higher than the yield of distillate oil, the yield of unconverted tail oil is less than 10 wt %, the obtained naphtha and diesel oil conform to the national V quality standards, and the vacuum gas oil can be used as a raw material of a catalytic cracking device or a raw material for producing base oil of low-freezing-point special lubricating oil.

Description

technical field [0001] The invention relates to a combined method of coal tar full fraction suspension bed hydrocracking and fixed bed hydrogenation upgrading, which belongs to the process of lightening heavy oil in petroleum processing technology. It mainly uses an oil-soluble compounding agent to suspend The process of treating the whole fraction of coal tar by combining a fixed-bed hydrogenation reactor with a fixed-bed hydrogenation reactor. Background technique [0002] With the continuous and high-speed development of social economy, my country's demand for petroleum products is also increasing. However, petroleum is a non-renewable energy source and is facing a crisis of depletion. In contrast, China has relatively abundant coal reserves, so producing liquid fuel from coal has become a basic direction of coal processing and utilization. [0003] On the other hand, with the rapid growth of the international and domestic steel industry, the coking industry is showing ...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 李传邓文安李庶峰文萍王玮瑶杜峰
Owner INNER MONGOLIA SHENGYUAN TECH CO LTD
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