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

A technology for heavy fuel oil and coal tar, which is applied in the direction of refining tar by chemical method, and can solve the problems of high energy consumption, complex process, unreachable viscosity and density, etc.

Active Publication Date: 2021-06-18
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 by using coal tar as raw material
  • Method for producing special marine heavy fuel oil by using coal tar as raw material
  • Method for producing special marine heavy fuel oil by using 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 production of marine heavy fuel oil, in particular to a method for producing special marine heavy fuel oil by taking coal tar as a raw material. The method comprises the following steps: (1) dehydrating full-fraction coal tar, removing mechanical impurities, feeding the full-fraction coal tar and hydrogen into a fluidized bed reactor, and carrying out hydrofining reaction under the action of a fluidized bed hydrotreating catalyst under selected process conditions; (2) sequentially carrying out high-low pressure separation and normal-pressure and vacuum fractionation on the reaction product in the step (1) to obtain light distillate oil and heavy distillate oil; (3) introducing the heavy distillate oil obtained in the step (2) into a non-hydrodewaxing fixed bed reactor, and carrying out dewaxing treatment through a non-hydrodewaxing catalyst and an active adsorbent under selected process conditions; and (4) carrying out normal-pressure fractionation treatment on the reaction product in the step (3) to obtain light distillate oil and special marine heavy fuel oil. According to the invention, the technical blank of producing the special marine heavy fuel oil by using the coal tar as the raw material is filled.

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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IPC IPC(8): C10C1/20
CPCC10C1/20
Inventor 万超冯亮万慧一
Owner INNER MONGOLIA SHENGYUAN TECH CO LTD
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