Wood fiber treatment method

Abstract

The invention discloses a wood fiber treatment method. The method comprises the following steps: step 1, a pulping process: continuously pulping a wood fiber raw material; step 2, a desanding process: pumping the pulp after repulping to pass through a high-concentration desander to remove heavy impurities; 3, fine screening: diluting the desanded slurry, and separating crude fibers; step 4, pulping: pulping the screened and separated crude fibers, and continuing to enter a fine screening process after pulping is completed; and step 5, concentration regulation: concentrating the accepted pulp subjected to the fine screening process by adopting an inclined wire, regulating and controlling the concentration of the pulp according to production requirements in combination with an on-line automatic concentration regulation system, and pumping the pulp into a papermaking workshop for use. By adopting the method disclosed by the invention, after the wood fibers are not subjected to core pulp process treatment, the controllability and timeliness of pulp preparation are realized, the adjustment of the pulp preparation process is shortened to about 10 minutes from original 8 hours, and the stability of the product quality is improved.

Description

technical field

[0001] The invention relates to the technical field of fiber raw material treatment, in particular to a wood fiber treatment method. Background technique

[0002] Before adopting this process, the treatment of wood fiber in the pulping workshop was mixed into domestic yellow board paper, and realized through the core pulp process. Due to the large difference in the characteristics of wood fiber and domestic yellow board, the overall operation efficiency of the core pulp process is affected: 1. The treatment of wood fiber is not deep enough, resulting in a large amount of slag in the system, wasting fiber and power consumption; 2. Wood fiber occupies The thermally dispersed production capacity of the system causes waste of power consumption and affects product quality; 3. The adjustment of wood fiber addition amount lags seriously, which affects product quality; 4. The upper limit of wood fiber addition ratio is limited, which is not conducive to cost control....

Examples

Embodiment 1

[0023] A wood fiber processing method, comprising the following steps:

[0024] Step 1. Pulping process: use a new type of hydraulic pulper for continuous pulping;

[0025] Step 2. Sand removal process: After pulping, the slurry is pumped through a high-consistency sand remover to remove heavy impurities;

[0026] Step 3. Fine sieving process: the slurry after sand removal is diluted and passed through a pressure sieve to separate coarse fibers;

[0027] Step 4. Beating process: screen the separated coarse fibers and then use a double disc mill for beating, and continue to enter the fine screening process after the beating is completed;

[0028] Step 5. Concentration adjustment process: the good pulp that has undergone the fine screening process is concentrated by a new type of high-efficiency and energy-saving inclined mesh, combined with an online automatic concentration adjustment system, the concentration of the pulp is adjusted and controlled according to production requ...

Embodiment 2

[0036] The online automatic concentration adjustment system includes a concentration detection device and a controller. The concentration detection device collects the concentration signal and transmits it to the controller. The controller controls the opening and closing of the water valve according to the concentration signal to realize the adjustment of the slurry concentration.

technical field

[0001] The invention relates to the technical field of fiber raw material treatment, in particular to a wood fiber treatment method. Background technique

[0002] Before adopting this process, the treatment of wood fiber in the pulping workshop was mixed into domestic yellow board paper, and realized through the core pulp process. Due to the large difference in the characteristics of wood fiber and domestic yellow board, the overall operation efficiency of the core pulp process is affected: 1. The treatment of wood fiber is not deep enough, resulting in a large amount of slag in the system, wasting fiber and power consumption; 2. Wood fiber occupies The thermally dispersed production capacity of the system causes waste of power consumption and affects product quality; 3. The adjustment of wood fiber addition amount lags seriously, which affects product quality; 4. The upper limit of wood fiber addition ratio is limited, which is not conducive to cost control....

Examples

Embodiment 1

[0023] A wood fiber processing method, comprising the following steps:

[0024] Step 1. Pulping process: use a new type of hydraulic pulper for continuous pulping;

[0025] Step 2. Sand removal process: After pulping, the slurry is pumped through a high-consistency sand remover to remove heavy impurities;

[0026] Step 3. Fine sieving process: the slurry after sand removal is diluted and passed through a pressure sieve to separate coarse fibers;

[0027] Step 4. Beating process: screen the separated coarse fibers and then use a double disc mill for beating, and continue to enter the fine screening process after the beating is completed;

[0028] Step 5. Concentration adjustment process: the good pulp that has undergone the fine screening process is concentrated by a new type of high-efficiency and energy-saving inclined mesh, combined with an online automatic concentration adjustment system, the concentration of the pulp is adjusted and controlled according to production requ...

Embodiment 2

[0036] The online automatic concentration adjustment system includes a concentration detection device and a controller. The concentration detection device collects the concentration signal and transmits it to the controller. The controller controls the opening and closing of the water valve according to the concentration signal to realize the adjustment of the slurry concentration.