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Organic solvent absorbing agent and preparation method thereof

An organic solvent and absorbent technology, applied in the field of organic solvent absorbent and its preparation, can solve the problems of unfavorable material bonding, poor reusability, slow absorption speed, etc., and achieve broad development and application prospects, fast absorption speed, and high viscosity small effect

Inactive Publication Date: 2014-04-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide an organic solvent absorbent and a preparation method thereof. The prepared organic solvent absorbent is millimeter-sized spherical particles, which can quickly and efficiently absorb organic solvents, and after absorption, the surface of the material is less viscous and has a certain degree of coagulation. Glue strength, which solves the problems of low absorption rate, slow absorption speed, and unfavorable handling of materials after absorption in existing absorbent materials; and can be reused for more than ten times, which solves the problem of poor reusability of traditional absorbent materials and avoids Reduce secondary pollution, and at the same time play a role in improving resource utilization and saving costs

Method used

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  • Organic solvent absorbing agent and preparation method thereof
  • Organic solvent absorbing agent and preparation method thereof
  • Organic solvent absorbing agent and preparation method thereof

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preparation example Construction

[0028] A preparation method of an organic solvent absorbent, comprising the following steps:

[0029] 1) Add dispersant and water into a four-necked flask equipped with a thermometer, a nitrogen port, a reflux condenser and a stirrer, and stir at 40-80°C for 20-60 minutes to fully dissolve it;

[0030] 2) Mix acrylates, methacrylates, styrene, crosslinking agent and initiator evenly to obtain a mixed solution;

[0031] 3) Control the rotation speed of the stirrer at 250-350rpm, add the mixture in step 2) dropwise into the four-necked flask, keep stirring during the dropwise addition, and then react at 60-85°C for 4-7 hours, the reaction Stir continuously during the process, then mature at 90°C for 1 hour, and filter to obtain the product;

[0032] 4) The product was washed with distilled water and dried under vacuum at 50°C for 24 hours to obtain an organic solvent absorbent.

[0033] Its raw material components are calculated by weight: 300-900 parts of water, 50-250 parts ...

Embodiment 1

[0044] A preparation method of an organic solvent absorbent, comprising the following steps:

[0045] 1) Add 0.05g of polyvinyl alcohol and 60g of water into a four-necked flask equipped with a thermometer, a nitrogen port, a reflux condenser and a stirrer, and stir at 60°C for 30 minutes to fully dissolve;

[0046]2) Mix 10 g of butyl acrylate, 20 g of styrene, 0.03 g of divinylbenzene and 0.12 g of dibenzoyl peroxide to obtain a mixed solution;

[0047] 3) Control the rotation speed of the stirrer to 300rpm, add the mixed liquid in step 2) dropwise into the four-necked flask, stir continuously during the dropwise addition, and then react at 80°C for 5 hours, stirring continuously during the reaction process, Then mature at 90°C for 1 hour, and filter to obtain the product;

[0048] 4) The product was washed with distilled water and dried under vacuum at 50°C for 24 hours to obtain an organic solvent absorbent. The absorption rate of this absorbent to toluene is 21g / g, and ...

Embodiment 2

[0050] A preparation method of an organic solvent absorbent, comprising the following steps:

[0051] 1) Add 0.1 hydroxyethyl cellulose and 90 g of water into a four-neck flask equipped with a thermometer, nitrogen port, reflux condenser and stirrer, and stir at 50°C for 40 minutes to fully dissolve;

[0052] 2) Mix 12.5g of ethyl acrylate, 2g of lauryl methacrylate, 18.5g of styrene, 0.06g of ethylene glycol dimethacrylate and 0.15g of azobisisobutyronitrile to obtain a mixed solution;

[0053] 3) Control the rotation speed of the stirrer to 350rpm, add the mixed liquid in step 2) dropwise into the four-necked flask, stir continuously during the dropwise addition, and then react at 75°C for 6 hours, stirring continuously during the reaction process, Then mature at 90°C for 1 hour, and filter to obtain the product;

[0054] 4) The product was washed with distilled water and dried under vacuum at 50°C for 24 hours to obtain an organic solvent absorbent. The absorption rate of...

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Abstract

The invention discloses an organic solvent absorbing agent and a preparation method thereof. The organic solvent absorbing agent is prepared by carrying out suspension polymerization reaction on acrylics, methacrylates, styrene, a cross-linking agent and an initiating agent in the environment that water and a dispersing agent exist. The organic solvent absorbing agent disclosed by the invention has the advantages of wide absorbing range, high absorption rate, high absorption speed and the like; an absorbed surface has small viscosity and a certain jelly strength, the organic solvent absorbing agent is convenient to recover and recycle and good in industrial applicability. The organic solvent absorbing agent disclosed by the invention can be reused more than ten times, the problem of poor reusability of a conventional absorbing material is solved, the secondary pollution caused by emission of a used absorbing agent as a waste is effectively reduced, and meanwhile the effects that the resource utilization rate is improved and the cost is reduced are achieved. The organic solvent absorbing agent can be used for treatment of industrial solvent-containing wastewater, and leakage and emergent absorption of an organic solvent in chemical production and is high in practicability and has a broad development prospect.

Description

technical field [0001] The invention relates to an organic solvent absorbent and a preparation method thereof. Background technique [0002] There are more than 30,000 types of organic solvents in industry, and their basic chemical structures are aliphatic hydrocarbons, alicyclic hydrocarbons, and aromatic hydrocarbons. After combining with different chemical substituent groups, different types of organic solvents are formed, such as alcohols, aldehydes, etc. Classes, ketones, esters, ethers, carboxylic acids and amines, etc. The more common organic solvents in industrial production include benzene, toluene, xylene, acetone, formaldehyde, trichlorethylene, chloroform and carbon tetrachloride. Most organic solvents are primary skin irritants, which have varying degrees of irritation to the skin, respiratory mucosa, and conjunctiva, and can cause non-specific inhibition of the central nervous system and general anesthesia. Some of these organic solvents can specifically act ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30
Inventor 张卫英李晓翁森
Owner FUZHOU UNIV
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