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Manufacturing method of environment friendly flame retardant medium density fiber board

A manufacturing method and medium-density technology, applied in the chemical industry, can solve the problems of increasing fuel cost, increasing the pressure of drying system, etc., and achieve the effects of less application amount, convenient storage and transportation, and low cost

Inactive Publication Date: 2015-05-27
江苏苏林木业有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The existing technology requires a drying system to dry the water during production, which greatly increases the pressure of the drying system. The drying energy of the fiberboard production line comes from the combustion of fuel in the thermal energy plant The heat generated is limited by the production capacity of the dry flue gas of the thermal energy plant. Therefore, the use of liquid flame retardants will increase a large amount of fuel costs and restrict the production line capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Raw material peeling: the wood raw materials are mainly wild oak in Guangxi and fast-growing eucalyptus artificially planted. Put these wood raw materials into the peeling machine for peeling, and the bark content after peeling is ≤ 3%;

[0014] (2) Screening of chips: the peeled wood raw material obtained in step (1) is chipped by a chipper to obtain wood chips with a length of 32 mm, a width of 22 mm, and a thickness of 4 mm, and at the same time screen out the wood chips longer than 50 mm, and wood chips shorter than 6 mm come out to ensure the shape of the wood chips is stable;

[0015] (3) Washing: Because the wood chips contain a lot of impurities such as silt and gravel, they should be washed with water to avoid damage to the grinding disc by impurities;

[0016] (4) Cooking and softening: put the cleaned wood chips into the cooking tank for cooking, cooking temperature: 170°C, cooking pressure: 8 bar, cooking time: 2 minutes;

[0017] (5) Thermal grinding: ...

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Abstract

The invention discloses a manufacturing method of an environment friendly flame retardant medium density fiber board. The manufacturing method relates to the technology field of chemical engineering, and comprises the following manufacturing steps of debarking and chipping wood, and sieving to obtain qualified wood chips; boiling at high temperature and high pressure, and separating fiber to obtain qualified fiber; applying adhesive, dye and curing agent; drying, winnowing, and applying powder flame retardant for spreading forming; finally, pressing to obtain rough boards through a pressing machine, cooling, sanding and saw cutting to obtain qualified production boards. The manufacturing method of the environment friendly flame retardant medium density fiber board provided by the invention can solve the problems that the usage amount of the flame retardant is large and the production cost is high during the flame retardant medium density fiber board manufacturing process.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to a method for manufacturing an environment-friendly flame-retardant medium-density fiberboard. Background technique [0002] An existing manufacturing method of medium and high-density fiberboard is to cook and soften wood chips, and then [0003] Through the quantitative control of the screw discharge control system, it enters the high-speed heat grinding machine, and the flame retardant mixture composed of the mixed solution of urea, oligophosphate and borate is passed through the The metering pump sprays into the grinding chamber of the thermal refiner, so that the mixture of wood fiber and flame retardant is sprayed out of the grinding chamber and enters the sizing pipeline, where melamine-modified urea-formaldehyde resin adhesive and emulsified paraffin are sprayed into the sizing pipeline. The agent is mixed with fibers, and the fibers are dried, paved, and hot-pressed to...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/08
CPCB27N3/04B27N3/08
Inventor 滕禹卿兰平彭万喜董会军葛曷一马东明
Owner 江苏苏林木业有限公司
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