Method for preparing environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue

A technology of flame-retardant fiber and xylose waste residue, which is applied in the direction of fiberboard, textiles, papermaking, papermaking, etc., can not solve the problems of too much profit, environmental pollution, environmental pollution, etc., and achieves reduced production costs, significant economic benefits, and reduced process The effect of investment

Active Publication Date: 2011-01-19
GANSU HEYUAN BIOLOGICAL PRODS
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Problems solved by technology

Since the moisture content of the waste residue is about 60%, it does not produce much benefit and pollutes the environment greatl

Method used

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  • Method for preparing environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue

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Example Embodiment

[0023] Example 2

[0024] 1. Centrifuge the xylose waste residue to separate the liquid in the xylose waste residue, and control the moisture of the waste residue at 60% to obtain 50kg of dry residue; the fiber mesh is 30 meshes, and the fiber filtration reaches 20s.

[0025] 2. Preparation of 10kg of phosphorus flame retardant: After mixing 5kg of amine polyphosphate and 2.5kg of urea, dissolve it with 2.5kg of water, and adjust the PH value of the phosphorus flame retardant to 7.5 with lime.

[0026] 3. Add the prepared flame retardant to the xylose waste residue after centrifugation in step 1 for flame retardant treatment. The addition amount is 5kg. Apply 7kg of urea-formaldehyde resin, 0.5kg of paraffin emulsion and 1.5kg of oxalic acid solution, and stir well.

[0027] 4. Drying, using airflow drying system, the inlet temperature of the system is 185°C, the outlet temperature is 85°C, the fiber moisture content is controlled at 8%, and then it enters the silo for storage.

[0028]...

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Abstract

The invention discloses a method for preparing an environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue, comprising the following steps: centrifuging the xylose waste residue, separating the liquid in the xylose waste residue; controlling the water content of the waste residue to be 50-60% and the fiber mesh number to be 30-100 meshes; filtering water in fiber for 18-22s; applying phosphorus flame retardant to carry out flame retardant treatment, wherein, the additive amount is 10-15% of the weight of the dried fiber configured in step a; applying urea formaldehyde resin, waterproofing agent and curing agent, and evenly stirring, wherein, the applying amount of the urea formaldehyde resin is 10-14% of the weight of the dried fiber, the applying amount of the waterproofing agent is 1-3% of the weight of the dried fiber, and the applying amount of the curing agent is 0.5-3% of the weight of the dried fiber; drying, controlling the water content of the fiber to be 8-14%, and then storing into a storage bin; prepressing the dried fiber into a plate blank; prepressing, and feeding the prepressed plate blank into a hot press for hot-pressing; and trimming, polishing and grading the plate blank after the plate blank is aired to the room temperature to obtain the finished product. The method of the invention reduces a fiberboard production process link,does not need the steps of softening and hot grinding by utilizing the xylose waste residue to produce the flame retardant fiberboard, thus reducing the process investment, lowering the production cost, and having obvious economic benefits.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of waste residues from xylose production, in particular to the technology of processing waste residues of xylose and manufacturing technology of fiberboards, in particular to a method for preparing environmentally friendly flame-retardant fiberboards by using residues of xylose. Background technique [0002] At present, domestic fiberboard production mainly uses wood as raw material. This method requires the use of a large amount of forest resources, and the cost of wood is also high. Most fiberboards on the market are not flame-retardant, and there are potential safety hazards in furniture manufacturing, interior decoration and other sulfur-filled materials. The production of xylose is to hydrolyze the pentosan in the corn cob, and the pentosan is separated from the liquid to the solid by the liquid collector of the hydrolysis pot. The solid is the xylose residue, and the main co...

Claims

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Application Information

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IPC IPC(8): D21J1/00
Inventor 秦全生韩小航张洁程丽敏
Owner GANSU HEYUAN BIOLOGICAL PRODS
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