Method for preparing fuel oil from biomass pyrolysis liquid

A biomass pyrolysis and biomass technology, which is applied in the field of renewable energy and biomass energy, can solve problems such as catalyst deactivation, achieve low operating costs, low hydrogen consumption, and avoid polymerization and coking

Active Publication Date: 2019-07-19
HENAN BUF BIOENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In order to solve the problem of rapid catalyst deactivation and coking caused by the rapid thermal polymerization of biomass pyrolysis liquid in the prior art, the present invention improves a method for preparing fuel oil

Method used

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  • Method for preparing fuel oil from biomass pyrolysis liquid
  • Method for preparing fuel oil from biomass pyrolysis liquid
  • Method for preparing fuel oil from biomass pyrolysis liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] as attached figure 1 As shown, the biomass pyrolysis solution 1 directly enters the reaction bed area of ​​the single-stage ebullating bed hydroprocessing reactor 3 under the protection of the hydrogen donor 2 at room temperature, and the mass ratio of the biomass pyrolysis solution to the hydrogen donor is It is 1:0.5. In this embodiment, the hydrogen donor is middle distillate oil with a boiling point range of 180-220°C. The mixed gas 9 formed after circulating hydrogen 7 and mixed new hydrogen 15 is pressurized by circulating hydrogen compressor 8 is mixed with circulating oil 23 and heated by heating furnace 10 to form a gas-liquid mixture 4 enters from the bottom of ebullating bed reactor 3 and is added The hydroprocessing reaction provides kinetic energy for fluidization, and the temperature of the hydroprocessing reaction is controlled at 280° C. by adjusting the temperature of the gas-liquid mixture 4 . The biomass pyrolysis liquid is rapidly heated, mixed an...

Embodiment 2

[0079] In this example, two-stage hydrotreating reactors are connected in series. For the process, see Figure 5 . The biomass pyrolysis solution is a liquid product obtained by slow pyrolysis of a mixture of poplar branches and bark, and the hydrogen donor is a substance with a boiling point range of 180-240°C obtained by hydrogenation of coal tar. It adopts the same catalyst Pd / C as in Example 1 in the first-stage hydroprocessing reaction, and the catalyst used in the second-stage hydroprocessing reaction is NiMo / Al 2 o 3 , the temperature of the first-stage hydroprocessing reaction is controlled at 280°C, and the temperature of the second-stage hydrotreating reaction is controlled at 330°C. Other operating conditions and process flow are the same as in Example 1, except that the heavy oil 24 is mixed with the first-stage ebullated-bed reaction product 25 and enters the second-stage ebullated-bed reactor 27 through a heating furnace 26 . The fuel properties obtained after...

Embodiment 3

[0086] In this embodiment, a single-stage ebullating bed hydrotreating reactor will be used. For the process, see figure 1 , the biomass pyrolysis solution is the liquid product obtained in the carbonization process of corn stalks, the catalyst is CoMo / C, the reaction temperature is 350°C, and the mass ratio of the biomass pyrolysis solution to the hydrogen donor is 1:2, 2 :1 and 4:1, other operating conditions are identical with embodiment one. The hydrogen-donating agent in this embodiment is a hydrocarbon substance obtained by further hydrocracking the deoxygenated fuel oil obtained in the present invention, and its boiling point range is 180-240°C. The fuel properties obtained after 2000 hours of continuous operation are shown in Table 6.

[0087] Table 6 Comparison of properties of fuel oil produced by hydrotreating under different ratios of biomass pyrolysis liquid and hydrogen donor

[0088]

[0089]

[0090] It can be seen from the results that as the concentr...

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Abstract

The invention discloses a method for preparing fuel oil from biomass pyrolysis liquid. Unpretreated biomass pyrolysis liquid is added into a reaction area of a fluidized bed reactor under the protection of a hydrogen donor for hydrotreating. The biomass pyrolysis liquid is hydrogenated and converted into fuel oil in a catalyst full-mixed-flow circulating system fluidized bed reactor formed throughthe combined action of circulating oil, a catalyst, hydrogen and an inner component, one part of the fuel oil serves as circulating oil and returns to the fluidized bed reactor, and the other part ofthe fuel oil is discharged outwards to serve as a product. The obtained fuel oil can be mutually dissolved with fossil fuel oil in any proportion, the sulfur and nitrogen content is very low, and meanwhile, a certain proportion of oxygen is contained, so that complete combustion is facilitated, and the fuel oil is especially suitable for high-altitude areas. Meanwhile, the biomass pyrolysis liquid is prevented from being condensed and coked under heating action, the problem that a catalyst is fast inactivated is solved, coke is prevented from being formed, and the requirement for industrial long-period operation can be met.

Description

technical field [0001] The invention relates to the fields of renewable energy and biomass energy, in particular to a method for preparing fuel oil from biomass pyrolysis liquid. Background technique [0002] Energy is the basic material for human survival and one of the symbols of social development. With the development of society, the demand for energy continues to increase. With the rise of the industrial revolution, the fossil energy crisis caused by the extensive use of fossil energy and the increasingly severe environmental problems force humans to adjust the existing energy structure. It is very necessary to find a raw material and convert it into fuel and chemical raw materials to replace existing fossil energy, especially liquid fossil energy. [0003] Biomass (broadly speaking) refers to various organisms produced through photosynthesis using the atmosphere, water, land, etc. Biomass absorbs water and carbon dioxide during the growth process to convert solar ene...

Claims

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Application Information

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IPC IPC(8): C10G49/10
CPCC10G49/10C10G2300/701Y02P30/20Y02E50/10
Inventor 袁远平李立权汪华林陈崇刚李剑平赵颖杨雪晶李俊杰晁君瑞郑旭晖
Owner HENAN BUF BIOENERGY CO LTD
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