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A bio-oil electrochemical hydrogenation upgrading device

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 improving hydrogenation efficiency and target product selectivity, increasing residence time, and increasing contact area

Active Publication Date: 2021-10-15
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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  • A bio-oil electrochemical hydrogenation upgrading device
  • A bio-oil electrochemical hydrogenation upgrading device
  • A bio-oil electrochemical hydrogenation upgrading device

Examples

Experimental program
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Effect test

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 a bio-oil electrochemical hydrogenation upgrading device, which includes an electrolysis unit, a circulation unit and a heating unit, wherein the electrolysis unit includes an anode chamber separated by a proton exchange membrane (3) (1) and the cathode chamber (6), the cathode chamber (6) is used to accommodate bio-oil, can carry out electrochemical hydrogenation treatment, and realizes the upgrading of bio-oil; the electrolyte inlet (9) of the anode chamber (1) and The electrolyte outlets (10) are connected by a circulation unit, and the cathode chamber (6) is also similar; the heating unit is used to heat the bio-oil in the cathode chamber (6), so that these bio-oils can be heated at a preset temperature condition. Under electrochemical hydrogenation treatment. Compared with the prior art, the present invention can realize electrochemical hydrogenation and upgrading of bio-oil at a constant temperature by improving the structure of each component of the device and their arrangement.

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 Patents(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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