Method for producing special marine heavy fuel oil with coal tar as raw material

A technology for heavy fuel oil and special ships, which is used in chemical extraction of tar, processing of hydrocarbon oil, petroleum industry, etc., can solve the problems of unreachable viscosity and density, complex process, high energy consumption, and maintain activity. Stabilizing and enhancing the effect of energy security

Active Publication Date: 2022-02-22
INNER MONGOLIA SHENGYUAN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coal tar processed by this technology is added to the reaction system as a small amount of additives, and is processed by two hydrogenation reaction units. The reaction product carries a large amount of catalyst particles and needs to be settled by the clarification unit and separated by a centrifuge to remove impurities. complex, high energy consumption
Moreover, judging from the nature of the product in the public cases, the viscosity and density of the product are not up to the standard of special marine heavy fuel oil

Method used

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  • Method for producing special marine heavy fuel oil with coal tar as raw material
  • Method for producing special marine heavy fuel oil with coal tar as raw material
  • Method for producing special marine heavy fuel oil with coal tar as raw material

Examples

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Effect test

Embodiment 1

[0046] The method for producing special marine heavy fuel oil with coal tar as raw material, the concrete steps are as follows:

[0047] (1) Spherical ebullating bed hydrotreating catalyst after the vulcanization treatment is loaded into the ebullating bed reactor; Coal tar after the pretreatment and hydrogen heating are pumped into the ebullating bed reactor, and the process conditions listed in Table 2 Example 1 Next, the coal tar is hydrorefined to remove the colloid, asphaltenes, sulfur, nitrogen, oxygen, and metal impurities in the coal tar. After continuous oil feeding for 100 hours, the mixed oil samples from the reactor began to be collected continuously.

[0048] (2) The collected mixed oil samples were put into an atmospheric fractionation still, and the fractionation still was evenly heated to 320°C at a heating rate of 20°C / hour and maintained for 2 hours to fractionate light distillates. The remaining distillate oil is put into a vacuum fractionation kettle, and ...

Embodiment 2

[0066] The method for producing special marine heavy fuel oil with coal tar as raw material, the concrete steps are as follows:

[0067] (1) The pretreated coal tar and hydrogen heating are pumped into the ebullating bed reactor, and the feed oil is hydrorefined according to the process operating conditions listed in Table 2, Example 2. Operation steps and examples 1 Step (1) is exactly the same.

[0068] (2) Atmospheric and vacuum fractionation is carried out to the miscella collected in step (1), fractionation temperature and operation steps are exactly the same as embodiment 1 step (2), and the analysis data of the heavy distillate oil that fractionation goes out is listed in Table 3.

[0069] (3) The heavy distillate oil that step (2) is fractionated is pumped into the non-hydrogen decondensation reactor, and the process operation conditions listed in the embodiment 2 of Table 4 are used to purify the feed oil and depreciate. The operation steps are the same as Embodiment...

Embodiment 3

[0072] The method for producing special marine heavy fuel oil with coal tar as raw material, the concrete steps are as follows:

[0073] (1) The pretreated coal tar and hydrogen heating are pumped into the ebullating bed reactor, and the feed oil is hydrorefined according to the process operating conditions listed in Table 2, Example 3. Operation steps and examples 1 Step (1) is exactly the same.

[0074] (2) Atmospheric and vacuum fractionation is carried out to the miscella collected in step (1), fractionation temperature and operation steps are exactly the same as embodiment 1 step (2), and the analysis data of the heavy distillate oil that fractionation goes out is listed in Table 3.

[0075] (3) The heavy distillate oil that step (2) is fractionated is pumped into the non-hydrogen decondensation reactor, and the process operation conditions listed in the embodiment 3 of Table 4 are used to purify the feed oil and depreciate. The operation steps are the same as Embodiment...

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Abstract

The invention relates to the technical field of producing marine heavy fuel oil, in particular to a method for producing special marine heavy fuel oil using coal tar as a raw material. The method comprises the following steps: (1) after dehydration and removal of mechanical impurities, the whole distillate coal tar enters an ebullating bed reactor with hydrogen, and under selected process conditions, carries out a hydrofining reaction under the action of an ebullating bed hydrotreating catalyst; (2) Carry out high and low pressure separation successively to the reaction product of step (1), normal and vacuum fractionation, obtain light distillate oil and heavy distillate oil; (3) introduce the heavy distillate oil that step (2) obtains into non- Hydrodecondensation fixed bed reactor, under the selected process conditions, through the non-hydrodecondensation catalyst and active adsorbent to carry out the depointation treatment; (4) the reaction product of step (3) is subjected to atmospheric pressure fractionation treatment, Light distillates and specialty marine heavy fuel oil are obtained. The invention fills up the technical blank of producing special marine heavy fuel oil with coal tar as raw material.

Description

technical field [0001] The invention relates to the technical field of producing marine heavy fuel oil, in particular to a method for producing special marine heavy fuel oil using coal tar as a raw material. Background technique [0002] my country's national defense construction field needs a special marine heavy fuel oil, because of its special performance requirements (see Table 6 Special marine heavy fuel oil technical indicators), currently most of the vacuum wax oil distillates of naphthenic crude oil are used as raw materials , using the solvent extraction process technology route to extract a small part of distillate oil as special marine heavy fuel oil. Because the raw material of this marine heavy fuel oil satisfying production is relatively few, therefore, the large-scale production of special marine heavy fuel oil is greatly limited. [0003] Following the MAPPOL Convention’s requirements on the sulfur content of marine heavy fuel oil, the special marine heavy fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00C10C1/20
CPCC10C1/20
Inventor 万超冯亮万慧一
Owner INNER MONGOLIA SHENGYUAN TECH CO LTD
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