Electrochemical hydrogenation upgrading device for bio-oil

A hydrogenation upgrading and bio-oil technology, applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physicochemical processes, etc. Reactor and other problems, to achieve the effect of increasing the residence time, increasing the temperature parameters, and increasing the contact area

Active Publication Date: 2020-11-03
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional hydrogenation upgrading process is carried out at high temperature. However, bio-oil is easy to polymerize when heated. At high temperature, due to its thermal instability, it polymerizes to form coke, which blocks the active sites of the catalyst and the reactor, affecting the stability and quality of the upgrading process. life

Method used

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  • Electrochemical hydrogenation upgrading device for bio-oil
  • Electrochemical hydrogenation upgrading device for bio-oil
  • Electrochemical hydrogenation upgrading device for bio-oil

Examples

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Embodiment 1

[0032] Such as figure 1 As shown, the embodiment of the present invention proposes a device for electrochemical hydrotreating and upgrading bio-oil, which includes an electrolysis unit, a circulation unit, a heating unit, a cooling unit and a sampling unit.

[0033] The electrolysis unit includes an anode chamber, an anode electrode, a proton exchange membrane, a catalytic electrode, a conductive ring, and a cathode chamber. Among them, the anode chamber and the cathode chamber are solid polytetrafluoroethylene blocks with square grooves, the grooves are the anode / catholyte flow chambers, the anode / catholyte inlets are located at the bottom of the groove, and the outlet is located at the top of the side of the groove , the inlet and outlet of the anode chamber and the cathode chamber are respectively located on both sides of the chamber, so that the inlet and outlet interfaces of the cathode and anode chambers will not interfere when connecting external pipes. The bottom of t...

Embodiment 2

[0045] Different from Example 1, a heating unit is used in this example to control the reaction temperature. The heating unit is composed of a cathode chamber heating resistance wire, a thermocouple, a temperature controller and a DC power supply. The resistance wire is laid on the back of the cathode chamber (that is, the resistance wire is arranged on the back of the groove). There are capillary sampling tubes and thermocouple sockets on the top of the cathode chamber, and the thermocouples are inserted into the reserved sockets of the cathode chamber. By controlling the reaction temperature in the cathode chamber, the bio-oil samples were subjected to constant current hydrogenation and upgrading under the temperature conditions of 30°C, 40°C, 50°C, 60°C, and 70°C, respectively. The hydrogenation yields of representative bio-oil compounds at different reaction temperatures are as follows: Figure 4 shown.

Embodiment 3

[0047] Different from Example 1, in this example, a sampling unit is used to realize online monitoring of the hydrogenation and upgrading process of the bio-oil sample. The sampling unit consists of a capillary sampling tube and a peristaltic pump. The sampling port is close to the surface of the catalytic electrode to realize online sampling of catholyte, which is transported and collected by a peristaltic pump, and then sent to analytical instruments, such as gas chromatography-mass spectrometer and ultraviolet fluorescence spectrometer, which can realize in-situ detection of reaction products. During operation, timing sample collection is realized by adjusting the flow rate of the peristaltic pump. The collected sample is immediately diluted with methanol to a concentration suitable for the analytical instrument, and then sent to the ultraviolet fluorescence spectrometer and gas chromatograph mass spectrometer for analysis. Through real-time monitoring, the degree of bio-oi...

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Abstract

The invention belongs to the field of biomass energy utilization, and discloses an electrochemical hydrogenation upgrading device for bio-oil, which comprises: an electrolysis unit, a circulation unitand a heating unit; the electrolysis unit comprises an anode chamber (1) and a cathode chamber (6) which are separated through a proton exchange membrane (3), wherein the cathode chamber (6) is usedfor accommodating bio-oil and can perform electrochemical hydrogenation treatment, thus achieving quality improvement of the bio-oil. an electrolyte inlet (9) and an electrolyte outlet (10) of the anode chamber (1) are connected through a circulating unit, and the cathode chamber (6) is also similar; and the heating unit is used for heating the bio-oil in the cathode chamber (6), so that the bio-oil can be subjected to electrochemical hydrotreatment under a preset temperature condition. By improving the structure of each component of the device, the arrangement mode of the components and the like, compared with the prior art, the electrochemical hydrogenation upgrading of the bio-oil at a constant temperature can be realized.

Description

technical field [0001] The invention belongs to the field of biomass energy utilization, and more specifically relates to a bio-oil electrochemical hydrogenation upgrading device. Background technique [0002] With dwindling fossil fuel supplies and growing environmental concerns, biomass is considered a promising fuel source. Biomass energy reserves are large, clean and renewable, and it is a potential alternative energy source. At present, the rapid pyrolysis of biomass to produce bio-oil, fuel gas, and biochar has become an effective way to utilize biomass resources. However, the direct application of bio-oil is limited due to its high viscosity, high moisture content, high oxygen content, corrosion and chemical instability. Therefore, bio-oil should be hydro-upgraded before it can be used to produce liquid fuels. The traditional hydrogenation upgrading process is carried out at high temperature. However, bio-oil is easy to polymerize when heated. At high temperature, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/08B01D61/00C10L1/02
CPCB01D61/00B01J19/0053B01J19/087C10L1/02C10L2290/38
Inventor 汪一邓伟熊哲汪雪棚邓增通陈元静向军胡松苏胜江龙
Owner HUAZHONG UNIV OF SCI & TECH
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