Prepn of paraffin emulsion with waste water from medium density fiber plate defibrator system

A technology of paraffin emulsion and fiberboard, applied in the direction of wax physical treatment, dissolution, chemical instruments and methods, etc., can solve the problems of unfavorable environmental protection, increase production cost, etc., achieve the effect of easy emulsification process and reduce the amount of waste water

Inactive Publication Date: 2007-06-06
福人集团有限责任公司
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AI Technical Summary

Problems solved by technology

The cork screw extrusion water in the production process of medium density fiberboard needs to be treated before it can be discharged or reused in accordance with environmental protection standards. Increase production cost and is not conducive to environmental protection

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0011] The preparation process of 45±2% paraffin wax emulsion: emulsification temperature is 85°C-95°C, emulsifier is stearic acid and triethanolamine, ammonia water is used as catalyst, and sodium carboxymethylcellulose is used as colloidal protective agent.

[0012] The cork screw extrusion water produced in the production process of medium density fiberboard is collected in the intermediate storage tank. The tank is equipped with slag removal and filtering devices. The extruded water is deslagging and filtered. Heat the effluent in the reaction kettle until the paraffin melts, stir evenly at a speed of 100-120rpm, then add 80-100kg of stearic acid and continue stirring until melting, keep the temperature at 85°C-95°C, slowly add 18-22kg of triethanolamine and stir Until the mixture is translucent, slowly add a mixture of 100kg of cork screw extruded water and 35-45kg of 20% industrial ammonia water, continue stirring until the mixture becomes gelatinous, slowly add 300kg of ...

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Abstract

The process of preparing paraffin emulsion with waste water from medium density fiber plate defibrator system features that paraffin emulsion is prepared with solid paraffin and the waste water from medium density fiber plate defibrator system as main material, stearic acid and triethanolamine as emulsifier, ammonia water as catalyst, and sodium carboxymethylcellulose as colloid protectant. The process is simple, and the paraffin emulsion is used for the production of medium density fiber plate. Reusing partial waste water can reduce the quantity of waste water to be treated.

Description

technical field [0001] The invention relates to the technical field of medium-density fiberboard production, in particular to a method for preparing paraffin emulsion by using waste water from a heat-grinding system for medium-density fiberboards. Background technique [0002] The production of MDF generally uses paraffin as a waterproofing agent. There are two common methods of applying paraffin. One is to melt the solid paraffin and add it to the grinding chamber from the screw of the cork, so that the paraffin is mixed with the wood fiber under the action of mechanical kneading. The other is to prepare solid paraffin into an emulsion, mix it with the adhesive and add it from the spray pipe or add it from the spray pipe alone. The paraffin emulsion is mixed with wood fiber to play a waterproof role. The cork screw extrusion water in the production process of medium density fiberboard needs to be treated before it can be discharged or reused in accordance with environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/40B01F3/12
Inventor 王旭施霹郁健
Owner 福人集团有限责任公司
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