CN101012628A - Production technology of thermomechanical bamboo pulp - Google Patents

Abstract

The invention belongs to a manufacturing process of thermomechanical bamboo pulp. Its producing procedures are that bamboo materials are cut into plate material; the bamboo plate washed by hot water is dewatered by water filtering machine; the bamboo plate is sent into pre-heating silo to heat and soften by transporting equipment; the bamboo plate is sent into a grinding machine after it is preheated and softened; it is sent into a boiler, after it is softened further the bamboo plate is sent into a hot grinding machine to grind in fine; fine grinding slurry is sent into a concave pool; after it is diluted the slurry is sent into a vertical screen to screen coarse slag out; screened good slurry is used for subsequent procedures; screened fine slag can be treated by the grinding machine and the good slurry is screened. The producing process can not cause environmental pollution and decrease deforestation.

Description

Manufacturing process of thermomechanical bamboo pulp

Technical field

The present invention relates to pulping technique, particularly manufacturing process of thermomechanical bamboo pulp.

Background technology

Thermomechanical pulp commonly used adopts two sections or three sections grinding methods, and needs to add chemicals, and raw material is a timber, and this manufacture equipment investment is big, the flow process complexity, the resource anxiety, environmental pollution is serious, and control expense is big, the energy consumption height can supply timber resources anxiety, production cost height.

Summary of the invention

The present invention adopts preheating thread rolling defibrator process production technology, and the bamboo material is once worn into slurry through defibrator.

Technical scheme of the present invention is: the small pieces that bamboo wood are cut into certain specification, wash with warm water, and dehydration, import feed bin with conveying equipment, advance preheating storehouse steam again and be preheated to 80～95 ℃, make bamboo chip softening, bamboo chip after softening is rubbed with the hands and is worn into single fiber or fibre bundle or soft small pieces through rubbing mill equipment with the hands, enters in the boiling vessel again and heats to 120～130 ℃ with steam, sending into defibrator with conveyor screw finish grindes, slurry behind the correct grinding disappears latent in the latent pond that disappears, 70～75 ℃ of temperature, 45～60 minutes time, disappear and dive after pressurized screen screens into good stock tank, the thick slag that filters out is handled by regrind mill.

Advantage of the present invention is: thermomechanical bamboo pulp yield height, and the raw material wide accommodation removes the also available shrub of bamboo material, bamboo wood processing three surplus materials; Do not add chemicals in process, the slurry amount is little, recycle, and environmental pollution is little, administers easily; Thermomechanical bamboo pulp processing is adopted one section and is worn into slurry, and energy consumption is low, and thermomechanical bamboo pulp adopts one section mill production equipment, and investment cost is few, and is easy and simple to handle, so the paper pulp cost is low.This pulp property is good, can make quality products such as high-quality cop tube paper with secondary stock.

Description of drawings

Fig. 1 is the manufacturing process of thermomechanical bamboo pulp flow chart.

The specific embodiment

It is long that bamboo wood is cut into 5～25mm through blank 1 operation, the sheet stock that 10～15mm is wide, with hot water 2 bamboo chip is washed 3, remove silt, bamboo chip after the washing dewaters through water-strainer 4, sending into pre-hot aggregate bin 5 with conveying equipment heats softening, temperature is 80～95 ℃, and 30～45 minutes time, the bamboo chip of pre-thermal softening enters to be rubbed with the hands in the grinding machine 6, rub with the hands and wear into single fiber or fibre bundle and loose small pieces, enter in the boiling vessel 7 again and further soften, temperature is 120～130 ℃, 40～50 minutes time, further softening bamboo material is sent into defibrator 10 with conveying worm 9 and is finish grinded, the slurry that finish grindes out disappear dive pond 11 disappear latent, 70～75 ℃ of temperature, 40～50 minutes time, the slurry that disappears after diving is diluted to 2% in diluting tank 12, sift out thick slag through pressurized screen 13; Thick slag is handled through regrind mill 14, and screening is slurry very, enters good stock tank 15, and good slurry uses for next procedure.

Claims (2)

1, a kind of manufacturing process of thermomechanical bamboo pulp, it is characterized in that: bamboo wood becomes sheet stock through blank (1), bamboo chip with hot water (2) washing dewaters through water-strainer (4), with conveying equipment bamboo chip being sent into pre-hot aggregate bin (5) heats softening, bamboo chip after the pre-thermal softening enters to be rubbed with the hands in the grinding machine (6), enter again in the boiling vessel (7), bamboo material after further softening is sent into defibrator (10) and is finish grinded, the slurry that finish grindes out enters the latent pond (11) that disappears and disappears latent, send into pressurized screen (13) and sift out thick slag after dilution, the good slurry of screening is equipped with the back segment operation to be used.

2, production technology according to claim 1 is characterized in that: the smart slag that pressurized screen (13) sifts out can be handled through regrind mill (14), and screening is slurry very.

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