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Non-wood fiber biologic chemimechanical pulp production process for producing fulvic acid fertilizer by using pulp black liquor

A biochemical machine, non-wood fiber technology, applied in fertilizer mixture, application, paper machine and other directions, can solve the problems of restricting the utilization of straw resources and the development of resources, and achieve huge economic, ecological and social benefits, easy to popularize, and preparation method simple effect

Active Publication Date: 2018-06-19
白博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the prior art, the production of fulvic acid fertilizers from pulping black liquor only involves the production of fulvic acid fertilizers from chemical pulping black liquor and does not involve the production of fulvic acid from chemical pulping black liquor, which greatly limits the production of fulvic acid fertilizers from non-wood pulping liquor. The use of fiberized mechanical pulp for straw resources and the development of resources require beneficial development and breakthroughs in both technology and practice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Raw material preparation: After the cotton stalks are crushed and dedusted, the raw materials enter the washing process.

[0043] 2. Washing material: Circulating water washing material, use 16 pulping post-processing links to enrich water, or make up clean water;

[0044] 3. Dehydration: Dehydration through the dehydration spiral washing material;

[0045] 4. One-time extraction (alkaline hydrolysis extraction of fulvic acid): generally add 0-5% potassium hydroxide according to different raw materials. The raw material reaches saturated moisture at the end of cooking, generally at a moisture content of 75-80%. Here, the first source of replenishment water comes from the black liquor extraction link, or supplements from the post-processing link of 16 pulping;

[0046] 5. Extrusion and thread rolling (extrusion vermicelli black liquor collection): specifically: the twin-screw thread rolling machine is used to complete three functions in sequence: the first is extrus...

Embodiment 2

[0059] Using cotton straw as raw material to produce chemical-mechanical pulp to prepare fulvic acid fertilizer:

[0060] 1. Raw material preparation: Cotton stalks are crushed to 2-5cm by a pulverizer and dedusted, and the raw materials enter the washing process.

[0061] 2. Washing material: Circulating water washing material, use 14 pulping post-processing links to enrich water, or make up clean water;

[0062] 3. Dehydration: Dehydration through the dehydration spiral washing material;

[0063] 4. Cooking: adding 3% potassium hydroxide by weight of raw materials. The raw material reaches saturated moisture at the end of cooking, generally at a moisture content of 75-80%. The source of replenishment water here comes from the 10 pulping link, or supplements from the 14 pulping post-processing link. Soften the raw material by steaming and soaking.

[0064] 5. Extrusion and thread rolling (extrusion vermicelli black liquor collection): The twin-screw thread rolling machine...

Embodiment 3

[0078] Other conditions are identical with embodiment 2, and difference is: take peroxide method extraction for three extractions. That is, the peroxide method of fulvic acid: add hydrogen peroxide, the concentration is 2-5% of the absolute dry weight of the pulp, the pulp concentration is 10-15%, the temperature is 60-90°C, and the pH value is adjusted to 7-10.5 with KOH. Time 60-150min.

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Abstract

The invention provides a non-wood fiber biologic chemimechanical pulp production process for producing fulvic acid fertilizer by using pulp black liquor. The production process comprises the steps that non-wood fiber is taken as raw material, biologic chemimechanical pulp is adopted for pulping process, fulvic acid is extracted in multiple working procedures in the pulping process of chemimechanical pulp, the pulp black liquor is extracted, the black liquor rich in the fulvic acid component is collected, a secondary extraction is carried out, and the fulvic acid is obtained. The existing production of fulvic acid fertilizer by using pulp black liquor only involves the use of chemical pulping black liquor to produce fulvic acid fertilizer, but does not involve the use of chemimechanical pulp process to produce fulvic acid in pulp black liquor, thereby greatly limiting the non-wood fiber chemimechanical pulp with the utilization of straw resources and the development of resources, and beneficial development and breakthrough are required in both aspects of technology and practice. The non-wood fiber biologic chemimechanical pulp production process for producing fulvic acid fertilizerby using pulp black liquor has the advantages that the steps are simple, the operation is convenient, the practicability is strong, and the economic, ecological and social value is high.

Description

technical field [0001] The invention discloses a non-wood fiber biochemical mechanical pulp production process for producing fulvic acid fertilizer by using pulping black liquor, and relates to the technical field of preparing and producing fulvic acid fertilizer by using non-wood fiberized mechanical pulp pulping black liquor. Specifically, it relates to the field of pulping and papermaking, and relates to the field of biological fertilizer production. Background technique [0002] Pulping and papermaking is faced with two basic issues, one is environmental issues and the other is resource issues. The environment, especially the pulping black liquor must be under strict environmental control, and the second is how to make full and effective use of papermaking resources. [0003] The basic situation of my country's papermaking resources is the shortage of wood resources rather than the abundance of wood fiber resources. In addition to wheat straw, cotton stalks, corn stalks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F1/66C05G3/04C05G3/80
CPCC05G3/80D21F1/66
Inventor 白博
Owner 白博
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