Desorption regeneration method of hydrophobic macroporous polymer adsorbent adsorbed with butanol

A polymer and adsorbent technology, applied in the separation/purification of hydroxyl compounds, separation methods, filter regeneration, etc., can solve the problems of high cost, large consumption, and large pollution, and achieve low cost, low pollution, and adsorption capacity high effect

Active Publication Date: 2015-07-15
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The third technical problem to be solved by the present invention is: in the prior art, when the adsorbent is regenerated, a large amount of organic solvents, acids, alkalis and other solutions need to be consumed, resulting in large pollution and high cost. Therefore, it is necessary to provide a In the attached column, the resin adsorbing butanol fermentation broth is desorbed and then directly rinsed with water to restore the resin adsorption performance of the fixed bed layer.

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  • Desorption regeneration method of hydrophobic macroporous polymer adsorbent adsorbed with butanol
  • Desorption regeneration method of hydrophobic macroporous polymer adsorbent adsorbed with butanol
  • Desorption regeneration method of hydrophobic macroporous polymer adsorbent adsorbed with butanol

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Embodiment 1

[0059] In this embodiment, the adsorption capacities of different hydrophobic macroporous polymer adsorbents to acetone, butanol, and ethanol in the mixed solution were measured, as follows.

[0060] Prepare a certain concentration of ABE mixed solution, wherein the concentration of butanol is 15g / L, the mass ratio of acetone, butanol and ethanol is 3:6:1, that is, the mass concentration ratio of the three components of ABE is 3:6:1, each adding 1 g of different macroporous polymer adsorbents ( figure 1 L in 1-19 , respectively Amberlite series, Diaion series, and D series resins), after the adsorption is saturated, use the GC method to calculate the adsorption capacity and separation factor of the macroporous polymer adsorbent for ABE.

[0061] The separation factor results are shown in Table 1.

[0062] Table 1

[0063]

[0064] The experimental results of the adsorption capacity are as follows: figure 1 shown. It can be seen from the figure that the Diaion series re...

Embodiment 2

[0068] The present embodiment adopts the L-15 macroporous adsorption resin (50g) in the embodiment 1 to carry out dynamic column adsorption, wherein, the butanol fermentation liquid containing acetone, butanol and ethanol is prepared as follows:

[0069] The Clostridium acetobutylicum strain was provided by the State Key Laboratory of Materials and Chemistry of Nanjing University of Technology, and anaerobic fermentation was carried out according to conventional methods in the field (fermentation went to the fermenter to blow nitrogen, maintain an anaerobic environment, and the temperature was 37 ° C), and obtained after 48 hours Its fermented liquid, through centrifugation, gets its supernatant (GC chromatogram sees image 3 ), record and contain acetone 4.56g / L, butanol 11.91g / L, ethanol 1.40g / L, butyric acid 0.60g / L, acetic acid 0.80g / L, glucose 10.0g / L in this fermented liquid supernatant. This embodiment and the following embodiments all adopt this fermentation liquid sup...

Embodiment 3

[0077] 50g of L-15 resin was loaded on a fixed bed, and 1L of butanol fermentation broth (containing 4.56g / L of acetone, 11.91g / L of butanol, 1.40g / L of ethanol, 0.60g / L of butyric acid, 0.80g / L of acetic acid, Glucose (10.0g / L) passed through the L-15 resin fixed bed at a flow rate of 1BV / h. After 10 hours, the volume of the detected absorptive solution was 0.96L, and contained acetone 4.26g / L, butanol 3.88g / L, ethanol 1.30g / L, butyric acid 0.56g / L, acetic acid 0.72g / L, glucose 9.6g / L.

[0078] Use 2BV of water to wash the adsorption bed (until it dries up). The volume of the washing liquid is 0.2L, and it contains 1.60g / L of acetone, 10.93g / L of butanol, 0.76g / L of ethanol, and 0.312g of butyric acid. g / L, acetic acid 0.294g / L, glucose 3.92g / L. According to the mass conservation of each component, use The formula calculates the saturated adsorption capacity of each component per gram of resin as follows: 3 mg of acetone, 120 mg of butanol, 0 mg of ethanol, 1 mg of butyric...

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Abstract

The invention provides a desorption regeneration method of a hydrophobic macroporous polymer adsorbent adsorbed with butanol. The method disclosed herein comprises the steps of using water-soluble low-boiling polar solvent and water to successively elute the hydrophobic macroporous polymer adsorbent adsorbed with butanol. According to the invention, after a solution containing butanol (e.g. butanol fermentation liquor) is adsorbed by the hydrophobic macroporous polymer adsorbent, by using the desorption regeneration method disclosed herein, the full dissolution and desorption of the adsorbed butanol in the adsorbent can be realized; in addition, the regeneration treatment can be directly carried out on the adsorbent on a fixed bed where the butanol fermentation liquor is adsorbed, and the adsorption process of the next stage can be directly conducted without taking out the adsorbent from the fixed bed, thus a lot of time is saved, and the regeneration efficiency is raised. The method disclosed herein has the advantages of simple process, short separation time, easy, rapid and complete desorption and regeneration, low investment of devices, low pollution, and low energy consumption, and is easy for large scale production.

Description

technical field [0001] The invention relates to a desorption regeneration method of a butanol adsorption resin, in particular to a desorption regeneration method of a resin adsorbed with a butanol fermentation liquid, and belongs to the technical field of extraction and purification. Background technique [0002] The diversification of national energy supply is an important aspect of national energy strategy. In the future energy structure of the world, renewable bio-energy will be one of the main sources of energy utilization. As a new type of biofuel, butanol has huge market potential with the improvement of upstream and downstream engineering technology of acetone butanol fermentation industry. [0003] Butanol (n-butanol and 1-butanol) is a four-carbon primary alcohol with formula C 4 h 9 OH, molar molecular weight 74.12. Butanol is a colorless liquid with a characteristic odour, its vapors have an irritating effect on mucous membranes and, in high concentrations, are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01J20/26C07C31/12C07C29/76
Inventor 应汉杰樊建声林晓清吴菁岚陈勇陈晓春谢婧婧熊健柏建新
Owner NANJING TECH UNIV
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