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Method for prolonging operation cycle of deoxidized biomass oil hydrogenation device

A biomass oil and hydrogenation treatment technology, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of prolonging the operation cycle of deoxygenated biomass oil hydrogenation equipment, rapid coking, etc., and avoid the tendency of coking , Efficient use of energy, and the effect of extending the operating cycle

Inactive Publication Date: 2015-08-19
HENAN BUF BIOENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a method for prolonging the operation cycle of deoxygenated biomass oil hydrotreating equipment, solve the problem of rapid coking tendency of deoxygenated biomass oil in the direct high-temperature hydrogenation catalytic process, and prolong the deoxidized biomass oil. Operation cycle of oil hydrogenation equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The method for prolonging the operating cycle of the deoxygenated biomass oil hydrogenation unit of this embodiment includes:

[0026] Step 1: deoxygenated straw pyrolysis oil (flow rate 1.25m 3 / h, pressure 11.5MPa, temperature 45°C) with the mixed hydrogen delivered by the compressor (flow 650Nm 3 / h, purity 90%, temperature 55°C, pressure 11.7MPa) mixing;

[0027] Step 2: Use the outlet heat exchanger of the main hydrogenation reactor to exchange the heat of the deoxygenated straw cracking oil and mixed hydrogen mixture to 170°C and enter the pre-hydrogenation reactor. Under the conditions of reaction temperature 180°C and reaction pressure 11MPa, the deoxygenated straw is cracked The mixture of oil and mixed hydrogen is subjected to low-temperature pre-hydrogenation reaction in the pre-hydrogenation reactor;

[0028] Step 3: The effluent from the pre-hydrogenation reactor enters the heating furnace to be heated to 340°C, and then enters the main hydrogenation reac...

Embodiment 2

[0031] The method for prolonging the operating cycle of the deoxygenated biomass oil hydrogenation unit of this embodiment includes:

[0032] Step 1: Deoxidized sawdust pyrolysis oil (flow 3.75m 3 / h, pressure 13.5MPa, temperature 50℃) with the mixed hydrogen delivered by the compressor (flow 4411Nm 3 / h, purity 85%, temperature 65°C, pressure 13.7MPa) mixing;

[0033] Step 2: Use a preheating furnace to exchange heat for the mixture of deoxidized wood cracking oil and mixed hydrogen to 180°C and enter the prehydrogenation reactor. Under the conditions of a reaction temperature of 190°C and a reaction pressure of 13 MPa, the mixture of deoxidized sawdust pyrolysis oil and hydrogen is subjected to a low-temperature pre-hydrogenation reaction in a pre-hydrogenation reactor;

[0034] Step 3: The effluent of the pre-hydrogenation reactor enters the heating furnace and is heated to 400°C before entering the main hydrogenation reactor. Under the conditions of a reaction temperatur...

Embodiment 3

[0037] The method for prolonging the operating cycle of the deoxygenated biomass oil hydrogenation unit of this embodiment includes:

[0038] Step 1: Deoxidized biomass oil is mixed with hydrogen to form a mixture of deoxygenated biomass oil and hydrogen;

[0039]Step 2: Use the waste heat of the device or a low-temperature heating furnace to exchange heat or heat the mixture of deoxidized biomass oil and hydrogen to 100°C, and then enter the pre-hydrogenation reactor for low-temperature pre-hydrogenation; the reaction pressure of low-temperature pre-hydrogenation is 10MPa , the reaction temperature is 120°C, the volume ratio of hydrogen to oil is 340, and the volume space velocity is 0.5h -1 ;

[0040] Step 3: The effluent of the pre-hydrogenation reactor is heated to 280°C in a heating furnace and enters the main hydrogenation reactor for high-temperature hydrogenation to obtain a high-temperature hydrogenation product; the reaction pressure of the high-temperature hydrogen...

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Abstract

The invention discloses a method for prolonging the operation cycle of a deoxidized biomass oil hydrogenation device. According to the method, low-temperature pre-hydrogenation catalysis treatment is carried out on deoxidized biomass oil before carrying out high-temperature hydrogenation catalysis treatment; the coking tendency of the deoxidized biomass oil in the direct high-temperature hydrogenation process is avoided by the graded hydrogenation catalysis operation of low-temperature pre-hydrogenation and high-temperature hydrogenation; the operation cycle of the hydrogenation device is prolonged; the industrialization for further converting the hydrogenated and deoxidized biomass oil into naphtha and diesel oil through hydrogenation is implemented; meanwhile, the low-temperature pre-hydrogenation and high-temperature hydrogenation liquid phase can be directly used for preparing gasoline and diesel oil products through fractionation; high-temperature hydrogenation reaction effluents can be used for preheating the deoxidized biomass oil; the energy of the overall hydrogenation catalysis device is efficiently utilized.

Description

technical field [0001] The invention relates to the field of bioenergy, in particular to a method for prolonging the operating cycle of a deoxygenated biomass oil hydrogenation device so as to prolong the operating cycle of the deoxygenated biomass oil hydrogenation device. Background technique [0002] Biomass broadly includes all plants, microorganisms, animals that feed on plants and microorganisms, and their wastes, such as crops, straw, wood, wood waste, and animal manure. Biomass is converted by thermal cracking to obtain biomass oil (including the liquid obtained by rapid thermal cracking, slow thermal cracking, hydrogenation liquefaction and gasification of biomass), and then the biomass oil is subjected to hydrodeoxygenation, hydrogenation, etc. The technological route that can completely replace gasoline and diesel in the petrochemical industry is the most economical and best solution to the oil crisis in the world, and it is the key research and development conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
Inventor 李立权汪华林袁远平曾茜陈崇刚李剑平郑旭晖杨雪晶
Owner HENAN BUF BIOENERGY CO LTD
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