Organic fertilizer prepared from papermaking black liquor produced in alkaline pulping process and preparation method of organic fertilizer

A paper-making black liquor and organic fertilizer technology, which is applied in pulping with inorganic alkali, organic fertilizer, papermaking, etc., can solve problems such as consumption of dissolved oxygen, foul smell, and blackening of water, and achieve good soil improvement and good slow release performance effect

A paper-making black liquor and organic fertilizer technology, which is applied in pulping with inorganic alkali, organic fertilizer, papermaking, etc., can solve problems such as consumption of dissolved oxygen, foul smell, and blackening of water, and achieve good soil improvement and good slow release performance effect

CN109423902AInactive Publication Date: 2019-03-05黑龙江如柏科技有限公司
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] (1) Acquisition of black liquor

[0151] Select dry straw, remove impurities and dust, and crush it. There is a trumpet-shaped dust removal device at the entrance of the pulverizer, and there are two trumpet-shaped dust removal devices next to the screw rod at the feeding port of the silo. The crushing is to crush the raw materials. into 2-3 cm sections, sieved and separated to obtain pulping raw materials, and stored in the silo;

[0152] Add 1 ton of the above-mentioned pulping raw material - straw into the No. 1 reaction tank by means of screw feeding, and use the same feeding method to add 3 tons of clean water and / or recycled water, 62kg of hydrogen peroxide and 62kg of sodium hydroxide At the same time, add it to the No. 1 reaction tank, stir evenly, and keep the pH of the mixed material in the No. 1 reaction tank greater than or equal to 12; due to the self-heating phenomenon of the softening reaction, when the reaction starts, the temperature in the No. 1 reacti...

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Abstract

The invention discloses an organic fertilizer. The organic fertilizer is prepared from papermaking black liquor produced in an alkaline pulping process. According to the preparation process of the organic fertilizer, the difficult-to-treat black liquid generated in the pulping process is fully utilized, so that the pollution problem in the pulping process is solved from the source, the environment-friendly chemistry standard is realized, organic matter and inorganic elements in the black liquor are effectively utilized, and the prepared fertilizer meets the national standard. The organic matter content of the pulping black liquor is stable, the requirements of various nutrient elements in the fertilizer can be met, and the utilization rate of the black liquor is high. The prepared fertilizer is high in fertilizer efficiency and balanced in nutrition and is suitable for plant growth, wherein the organic matter contained in the fertilizer can effectively improve physical, chemical and biological characteristics of soil, and the soil can be cured.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to an organic fertilizer prepared from papermaking black liquor produced by an alkaline pulping process and a preparation method thereof. Background technique [0002] Paper is an important item closely related to human life. It has developed into a raw material for packaging, printing, cigarettes, stationery, machinery, building materials, military industry and other industries. The paper industry has a wide range of applications in all walks of life. The development of the paper industry directly It reflects the level of a country's national economy and civilization construction. my country is a big country for papermaking and papermaking, and papermaking has become an important basic industry that drives the development of the national economy. According to China's 2015 Paper Industry Annual Report, in 2015 there were about 2,900 paper and cardboard manufacturers...

Claims

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Application Information

Patent Timeline
05 Mar 2019
Publication
CN109423902A
IPC
D21B1/06; D21C3/00; D21C3/02; D21C3/22; C05F7/00
CPC
C05F7/00; D21B1/06; D21C3/006; D21C3/02; D21C3/22; Y02A40/20
Inventors
刘长如; 钱月起