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Preparation method of biological binary composite adsorbent in glycerol triacetate refinement process

A technology of glycerol triacetate and binary compounding, which is applied to the preparation of carboxylic acid esters, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of unsatisfactory refining effects, poor selectivity of adsorbents, and high cost of use, and achieve Good natural degradation performance, improved quality, reliable and safe effects

Inactive Publication Date: 2014-06-25
云南省玉溪市溶剂厂有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems in the background technology, single activated carbon is used as a triacetin triacetin follow-up process to remove residual organic adsorbents with poor selectivity, easy saturation, and subsequent refining The effect is unsatisfactory, the use cost is high, etc., the purpose of the present invention is to provide a kind of preparation method of biological binary composite adsorbent in the triacetin refining process, to achieve high-efficiency elution effect

Method used

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  • Preparation method of biological binary composite adsorbent in glycerol triacetate refinement process
  • Preparation method of biological binary composite adsorbent in glycerol triacetate refinement process
  • Preparation method of biological binary composite adsorbent in glycerol triacetate refinement process

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Embodiment 1

[0032] The biological binary composite adsorbent in the triacetin refining process uses β-cyclodextrin, water and granular coconut shell activated carbon as raw materials, and is prepared according to the following steps:

[0033] Weigh 4 kg of cyclodextrin and 100 kg of water according to the ratio of cyclodextrin: water = 0.04: 1; put the water into a container with stirring, heat and stir, and when the temperature reaches and maintains at 45°C, proportionally Add the cyclodextrin in four times, 1kg each time, continue to maintain the temperature, control the stirring speed at 60r / min, wait until all the cyclodextrin is added, stir and mix well, and mix evenly; heat the prepared cyclodextrin solution, The temperature was kept at 70°C to prepare cyclodextrin hydrate; according to cyclodextrin hydrate:activated carbon=1:0.05, 5 kg of granular coconut shell activated carbon and 100 kg of cyclodextrin hydrate were weighed respectively, and the granular Add coconut shell activate...

Embodiment 2

[0039] The biological binary composite adsorbent in the triacetin refining process adopts α-cyclodextrin, water and spherical fruit shell activated carbon as raw materials, and is prepared according to the following steps:

[0040] Weigh 12 kg of cyclodextrin and 100 kg of water respectively according to the ratio of cyclodextrin: water = 0.12: 1; put the water into a container with stirring, heat and stir, and when the temperature reaches and maintains at 50°C, proportionally Add the cyclodextrin in four times, 3kg each time, continue to maintain the temperature, control the stirring speed at 60r / min, wait until all the cyclodextrin is added, stir and mix well, and mix evenly; heat the prepared cyclodextrin solution, Keep the temperature at 70°C to prepare cyclodextrin hydrate; according to cyclodextrin hydrate: activated carbon = 1:0.06, weigh 7 kg of spherical fruit shell activated carbon and 117 kg of cyclodextrin hydrate respectively, and weigh the spherical fruit shell ac...

Embodiment 3

[0046] The biological binary composite adsorbent in the triacetin refining process uses γ-cyclodextrin, water and cylindrical coconut shell activated carbon as raw materials, and is prepared according to the following steps:

[0047] Weigh 28 kg of cyclodextrin and 100 kg of water respectively according to the ratio of cyclodextrin: water = 0.28: 1; put the water into a container with stirring, heat and stir, and when the temperature reaches and maintains at 45°C, proportionally Add the cyclodextrin in four times, 7kg each time, continue to maintain the temperature, control the stirring speed at 60r / min, wait until all the cyclodextrin is added, fully stir and mix, and mix evenly; heat the prepared cyclodextrin solution, Keep the temperature at 70°C to prepare cyclodextrin hydrate; according to cyclodextrin hydrate: activated carbon = 1:0.07, weigh 7 kg of cylindrical coconut shell activated carbon and 100 kg of cyclodextrin hydrate, and weigh the cylindrical coconut shell Add...

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Abstract

The invention provides a preparation method of a biological binary composite adsorbent in a glycerol triacetate refinement process, and aims at overcoming the deficiencies of relatively poor selectivity, easiness in saturation, non-ideal subsequent refinement effect, high use cost and the like due to adoption of single active carbon as an adsorbent for removing residual organic matters in a subsequent process of glycerol triacetate in the prior art. According to the method, the surface of active carbon is grafted and coated with cyclodextrin, so that the content of oxygen-containing groups on the surface of active carbon is increased, the characteristics of active carbon are added, and active carbon can form an inclusion compound and a molecular assembly system together with a large quantity of organic and inorganic molecules under the Van der Waals' force, the hydrophobic interaction force, the effect of matching between molecules of subjective and objective bodies and the like; the enveloping effect of selective combination is commonly known as the molecular identification, and finally a high-efficiency elution effect is achieved.

Description

technical field [0001] The invention relates to the field of ester purification in organic chemistry, in particular to a preparation method of an adsorbent used in the production process of glycerol triacetate. Background technique [0002] Plasticizers, polyols and other industries have introduced relevant restrictive standards since 2007, requiring enhanced detection and control of trace and low-concentration organic substances in plasticizers and polyols. The mandatory standard takes plasticizers, residual organic compounds and heavy metals in polyols that affect their quality and purity as negative indicators, and national agencies will conduct regular sampling inspections. Most of the relevant testing standards directly refer to the testing standard methods of the food industry. The tobacco industry uses the commonly used filter rod plasticizer, namely glycerol triacetate, as one of the typical representatives of control. [0003] According to the research on the low c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C07C69/18C07C67/56
Inventor 蒋海明潘光亮赖正波杜云忠陈艳琼
Owner 云南省玉溪市溶剂厂有限公司
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