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Furfural waste water recycling method

A process method and wastewater technology, applied in separation methods, chemical instruments and methods, natural water treatment, etc., can solve problems such as high production process costs, polluted environment, complex process, etc., and achieve the effect of accelerating heat exchange capacity

Inactive Publication Date: 2012-07-18
刘祚希 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a furfural wastewater reuse process, which overcomes the problems of high cost, complicated process, and environmental pollution in the traditional comprehensive utilization of furfural wastewater.

Method used

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  • Furfural waste water recycling method
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  • Furfural waste water recycling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the furfural wastewater mixture continuously passes through the condensing device to reduce the wastewater to normal temperature, and then enters the degreasing device separately so that the oil in the wastewater passes through the filter screen installed in the degreasing device, and makes the wastewater flow smooth and without turbulence The oil, oily aldehyde sludge, oleic acid, etc. are separated from the water by floating, and then the oil is regularly removed for further combustion treatment, and the separated waste water is passed through cellulose or polymer materials under the action of a working pressure of about 0.3 MPa. The manufactured microporous membrane device utilizes its uniform pore size to intercept particulate suspended matter in wastewater so that it can be removed without passing through the filter membrane, and at the same time, the discharged waste can be regularly discharged and put into combustion treatment.

Embodiment 2

[0019]Utilizing the large surface area of ​​the porous structure of the lzx-h type activated carbon produced from furfural waste residue, the oxygen and hydrogen in the form of functional groups make the furfural, alcohols, ketones, esters and other organic substances in the wastewater, on these surfaces and The contained oxides or complexes react chemically with the adsorbed substances, thus combining with the adsorbed substances and aggregating on the surface of activated carbon. The principle of microwave is used to regenerate by thermal desorption, that is, in the microwave field, the polar substance molecules adsorbed by activated carbon are induced to produce dipole turning polarization, and the electromagnetic field energy is converted into heat energy, and the water and organic substances adsorbed in the pores Part of the furfural chemical products can be recycled after being volatilized by heat and condensed, while the pores of the activated carbon part are reopened, a...

Embodiment 3

[0021] The water treated by lzx-h activated carbon adsorption can enter the organic resin adsorber. The lzx-y organic adsorption resin developed by the organic adsorption resin device has a large pore size, and the diffusion speed of the adsorbate molecules in the pores is also large. Features: Adsorb furfural, alcohols, ketones, esters and other organic molecules on the solid surface, thereby reducing the surface energy. When the solid absorbs solute molecules from the solution, the concentration of the solution will decrease, and the adsorbed furfural, Alcohols, ketones, esters and other organic molecules reduce the surface energy. When the solid absorbs solute molecules from the solution, the concentration of the solution will decrease, and the adsorbed furfural, alcohols, ketones, esters, etc. A variety of organic molecules will concentrate on the solid surface, and the temperature, pressure, and surface size are used to control the use of the adsorption resin, so that vari...

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Abstract

The invention relates to a furfural waste water recycling method which is characterized by comprising the following steps: furfural waste water mixture is processed by a cooling device, a grease removing device, a microporous filter, an active carbon adsorbing device, an organic resin adsorbing device, an inorganic resin adsorbing device and a membrane processing device, thereby the separation andthe recycle of organic products such as furfural and acetic acid are realized; while materials in water are very small after the waste water is processed by the membrane processing device, and the materials in the water are separated and recombined in the membrane filter process, thereby the oxygen aggregative state and the property are changed, the thermal resistance is reduced to cause the increment in fluidity in the water heating process, and the heat exchanging speed of a boiler is quickened, therefore, the processed water serves as recycling water used in production, and the heat efficiency is improved. The furfural waste water recycling method overcomes the problems of high cost, complicated technological process, environment pollution, and the like of the traditional furfural waste water utilizing process.

Description

technical field [0001] The invention relates to a process for reusing furfural wastewater, which belongs to the technical field of recycling chemical products from furfural wastewater for production. Background technique [0002] At present, the process principle of using furfural wastewater to recover chemical products for production has been reported in relevant literature: the research on the recovery of acetic acid from furfural wastewater, firstly, the sedimentation tank is used to gravity settle the wastewater to remove the insoluble solids, and then filter Filter out the suspended matter, after settling and filtering, the waste water is a yellow transparent liquid, the removal rate of the suspended matter in the waste water is greater than 99%, and then enters the waste water for decolorization. The selected decolorizing agent is activated carbon. The purpose of decolorization is to prevent the The color becomes darker during repeated extraction. Put activated carbon ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C02F1/40C02F1/28C02F103/36
Inventor 刘祚希姜富林
Owner 刘祚希