Novel wood fiber production process

Abstract

A novel wood fiber production process is characterized by comprising the following steps: a feeding stage: conveying raw materials from a conveyor belt for feeding; in the winnowing stage, the raw materials enter a winnowing desander to be desanded; in the material plugging stage, the raw materials enter a material plugging screw for stable material plugging; in the treatment stage, the raw materials enter a treatment assembly to be treated, and high-strength wood fibers are obtained; in the feeding stage, wood chips with the water content being 50% are adopted as raw materials, the wood chips are existing production waste materials, and the raw materials are shoveled and conveyed to a conveying belt through a forklift; an opening is formed in the upper end of a winnowing sand remover used in the winnowing stage to receive the raw materials on the conveying belt, and an exhaust fan and a bag-type dust collector are matched with the winnowing sand remover to discharge and collect gravel in the raw materials; wood chips / sand are separated through winnowing equipment; through proper material plug spiral type selection, it is ensured that low-density wood chips form a stable material plug; the high-strength wood fiber is obtained by adjusting the proper chemical adding proportion and steam consumption.

Description

Technical Field

[0001] The invention relates to the technical field of wood fiber production, and in particular to a new wood fiber production process. Background Art

[0002] The existing wood fiber production line is a method derived from the CTMP process, which uses wood chips to produce high-yield wood fiber raw materials. The output has a high yield but low strength. It can be added to kraft paper, recycled paper, and corrugated paper as a low-strength raw material to reduce costs. However, it was found during use that the cost of using wood chips as raw materials is still relatively high. To solve this problem, a new wood fiber production process is proposed. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a new wood fiber production process, which is characterized by comprising the following steps:

[0004] In the feeding stage, the raw materials are transported from the conveyor belt for feeding;

[0005] In the air separation stage, the raw materials enter the air separation desander for sand removal;

[0006] In the plugging stage, the raw materials enter the plugging screw for stable plugging;

[0007] In the processing stage, the raw materials enter the processing assembly for processing to obtain high-strength wood fibers;

[0008] Furthermore, the raw material in the feeding stage is wood chips with a moisture content of 50%, which are existing production wastes, and a forklift is used to shovel the raw materials onto the conveyor belt;

[0009] Furthermore, the upper end of the air separation desander used in the air separation stage is open to receive the raw materials on the conveyor belt, and the sand and gravel in the raw materials are discharged and collected by using an external exhaust fan and a bag dust collector in conjunction with the air separation desander;

[0010] Furthermore, the discharged sand and gravel raw materials enter the storage bin along the pipeline, and then enter the plugging screw from the storage bin. The raw materials are plugged in the screw to form a stable material source while squeezing out moisture;

[0011] Further, the material source squeezed out of water enters into a processing component, which includes a refining chamber, a bleaching chamber, and a filtering chamber, which respectively contain a refining enzyme, a bleaching agent, and sodium carbonate;

[0012] Furthermore, the refining enzyme is used at a temperature of 50-65°C, the refining time is 3-4 hours, and the refined raw material is obtained after processing;

[0013] Furthermore, the bleaching time of the bleaching agent is 1-1.5 hours, and the refined raw material is bleached to obtain a bleached raw material;

[0014] Further, the bleached raw material enters the filtering chamber, sodium carbonate is added, the pH value is adjusted to 8-8.5, and filtering is performed.

[0015] Beneficial effects of the present invention:

[0016] The present invention uses a forklift to shovel wood chips with a moisture content of 50% onto a conveyor belt. The raw materials are conveyed from the conveyor belt and fall into the upper opening of an air separation sand remover. An external exhaust fan and a bag dust collector are used in conjunction with the air separation sand remover to discharge and collect sand and gravel in the raw materials. The raw materials discharged with sand and gravel enter a storage bin along a pipeline and enter a plugging screw from the storage bin. The raw materials are plugged into the screw to form a stable material source while squeezing out moisture. The material source with squeezed out moisture enters a refining bin, a bleaching bin, and a filtering bin in sequence. Refining enzymes are added to the refining bin. The use temperature of the refining enzymes is 50 -65℃, refining time is 3-4 hours, after processing, refined raw materials are obtained, the refined raw materials enter into bleaching bin, and bleaching agent is added, the bleaching time is 1-1.5 hours, the refined raw materials are bleached to obtain bleached raw materials, the bleached raw materials enter into filtering bin, sodium carbonate is added, the pH value is adjusted to 8-8.5, filtered to obtain high-strength wood fiber, and sawdust / sand is separated by air separation equipment; by selecting appropriate plug screws, low-density sawdust is ensured to form stable plugs; by adjusting appropriate chemical addition ratios and steam dosage, high-strength wood fiber is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a new wood fiber production process of the present invention. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1

[0022] The present invention provides a new wood fiber production process, which is characterized by comprising the following steps:

[0023] In the feeding stage, the raw materials are transported from the conveyor belt for feeding;

[0024] In the air separation stage, the raw materials enter the air separation desander for sand removal;

[0025] In the plugging stage, the raw materials enter the plugging screw for stable plugging;

[0026] In the processing stage, the raw materials enter the processing assembly for processing to obtain high-strength wood fibers;

[0027] Furthermore, the raw material in the feeding stage is wood chips with a moisture content of 50%, which are existing production wastes, and a forklift is used to shovel the raw materials onto the conveyor belt;

[0028] Furthermore, the upper end of the air separation desander used in the air separation stage is open to receive the raw materials on the conveyor belt, and the sand and gravel in the raw materials are discharged and collected by using an external exhaust fan and a bag dust collector in conjunction with the air separation desander;

[0029] Furthermore, the discharged sand and gravel raw materials enter the storage bin along the pipeline, and then enter the plugging screw from the storage bin. The raw materials are plugged in the screw to form a stable material source while squeezing out moisture;

[0030] Further, the material source squeezed out of water enters into a processing component, which includes a refining chamber, a bleaching chamber, and a filtering chamber, which respectively contain a refining enzyme, a bleaching agent, and sodium carbonate;

[0031] Furthermore, the refining enzyme is used at a temperature of 50-65°C, the refining time is 3-4 hours, and the refined raw material is obtained after processing;

[0032] Furthermore, the bleaching time of the bleaching agent is 1-1.5 hours, and the refined raw material is bleached to obtain a bleached raw material;

[0033] Further, the bleached raw material enters the filtering chamber, sodium carbonate is added, the pH value is adjusted to 8-8.5, and filtering is performed.

[0034] Example 2

[0035] When in use, sawdust with a moisture content of 50% is shoveled onto a conveyor belt by a forklift. The raw material is conveyed from the conveyor belt and falls into the upper opening of the air separation sand remover. An external exhaust fan and a bag dust collector are used in conjunction with the air separation sand remover to discharge and collect sand and gravel in the raw material. The raw material with sand and gravel discharged enters the storage bin along the pipeline and enters the plugging screw from the storage bin. The raw material is plugged into the screw to form a stable material source while squeezing out water. The material source with water squeezed out enters the refining bin, the bleaching bin, and the filtering bin in turn. Refining enzyme is added to the refining bin. The refining enzyme is used at a temperature of 50-65°C and a refining time of 3-4 hours. Refined raw material is obtained after processing. The refined raw material enters the bleaching bin and a bleaching agent is added. The bleaching time of the bleaching agent is 1-1.5 hours. The refined raw material is bleached to obtain a bleached raw material. The bleached raw material enters the filtering bin, sodium carbonate is added, and the pH value is adjusted to 8-8.5. Filtering is performed to obtain high-strength wood fiber.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A new wood fiber production process, characterized in that: The following steps are involved: In the feeding stage, the raw materials are transported from the conveyor belt for feeding; In the air separation stage, the raw materials enter the air separation desander for sand removal; In the plugging stage, the raw materials enter the plugging screw for stable plugging; In the processing stage, the raw materials enter the processing components for processing to obtain high-strength wood fibers.

2. A new wood fiber production process according to claim 1, characterized in that: The raw material in the feeding stage is wood chips with a moisture content of 50%. The wood chips are existing production waste. A forklift is used to shovel the raw materials onto the conveyor belt.

3. A new wood fiber production process according to claim 2, characterized in that: The upper end of the air separation sand remover used in the air separation stage is open to receive the raw materials on the conveyor belt. An external exhaust fan and a bag dust collector are used in conjunction with the air separation sand remover to discharge and collect the sand and gravel in the raw materials.

4. A new wood fiber production process according to claim 3, characterized in that: The discharged sand and gravel raw materials enter the storage bin along the pipeline, and then enter the plugging screw from the storage bin. The raw materials are plugged in the plugging screw to form a stable material source while squeezing out moisture.

5. A new wood fiber production process according to claim 4, characterized in that: The material source after squeezing out water enters into the processing component, which includes a refining chamber, a bleaching chamber, and a filtering chamber, which respectively contain refining enzymes, bleaching agents, and sodium carbonate.

6. A new wood fiber production process according to claim 5, characterized in that: The refining enzyme is used at a temperature of 50-65° C., and the refining time is 3-4 hours. After processing, a refined raw material is obtained.

7. A new wood fiber production process according to claim 6, characterized in that: The bleaching time of the bleaching agent is 1-1.5 hours, and the refined raw material is bleached to obtain the bleached raw material.

8. A new wood fiber production process according to claim 7, characterized in that: The bleached raw materials enter the filtration chamber, sodium carbonate is added, the pH value is adjusted to 8-8.5, and filtration is carried out.

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