System for preparing high-nitrogen carbon-based fertilizer from straws and biogas slurry, and method for preparing high-nitrogen carbon-based fertilizer

A carbon-based fertilizer and control system technology, applied in the field of biogas slurry resource utilization, can solve problems such as failure to restore soil fertility, soil structure, soil compaction, etc. Improve the effect of improvement and crop growth promotion

Inactive Publication Date: 2020-05-19
NANJING WONDUX ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Traditional chemical fertilizers and other compound fertilizers can hardly restore soil fertility, improve soil structure, and also cause problems such as soil compaction

Method used

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  • System for preparing high-nitrogen carbon-based fertilizer from straws and biogas slurry, and method for preparing high-nitrogen carbon-based fertilizer
  • System for preparing high-nitrogen carbon-based fertilizer from straws and biogas slurry, and method for preparing high-nitrogen carbon-based fertilizer
  • System for preparing high-nitrogen carbon-based fertilizer from straws and biogas slurry, and method for preparing high-nitrogen carbon-based fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 1 ton of harvested crop straw and put it into the crushing equipment 1 to crush it to about 15mm, then add about 3% catalyst and adhesive for conditioning pretreatment, mix evenly and place it for about 10 minutes, and pass the pretreatment through the feeding screw device 4 The straw is spirally transported to the pyrolysis and carbonization furnace 5, and the straw is set in the pyrolysis and carbonization furnace 5 to maintain a carbonization temperature of 550°C for 3 hours of deoxidation and carbonization treatment, and then put the wood charcoal powder into the cooling device 13 for cooling, and then carbonize after cooling for 30 minutes Straw is put into crushing equipment 14 and crushed to about 5mm;

[0039] Concentrate and temper anaerobic fermentation high-ammonia-nitrogen biogas slurry to 3000mg / L, add biogas slurry storage tank 15 for temporary storage, install spray device 16 to spray according to the liquid-solid ratio of 25:1, and then transport it to...

Embodiment 2

[0042] Take 1 ton of crop straw harvested from the same batch and put it into the crushing equipment 1 to crush it to about 5mm, then add about 3% catalyst and adhesive for conditioning pretreatment, mix evenly and place it for about 10 minutes, and pass through the feeding screw device 4. Transport the pretreated straw to the pyrolysis carbonization furnace 5 in a spiral manner, set the straw in the pyrolysis carbonization furnace 5 to maintain a carbonization temperature of 500°C, perform deoxidation carbonization treatment for 3 hours, and then put the wood charcoal powder into the cooling device 13 for cooling, After cooling for 30 minutes, the carbonized straw is no longer crushed;

[0043] Concentrate and temper anaerobic fermentation high-ammonia-nitrogen biogas slurry to 3500 mg / L, add biogas slurry storage tank 15 for temporary storage, set spray device 16 to spray according to the liquid-solid ratio of 20:1, and then transport it to the drum mixing equipment on the co...

Embodiment 3

[0046] Take 1 ton of crop straw collected from the same batch and put it into the crushing equipment 1 to crush it to about 10mm, then add about 4% catalyst and adhesive for conditioning pretreatment, mix evenly and place it for about 10 minutes, and pass through the feeding screw device 4. Transport the pretreated straw to the pyrolysis carbonization furnace 5 in a spiral manner, set the straw in the pyrolysis carbonization furnace 5 to maintain a carbonization temperature of 480°C, perform deoxidation carbonization treatment for 3 hours, and then put the wood charcoal powder into the cooling device 13 for cooling, After cooling for 30 minutes, the carbonized straw is put into the crushing equipment 14 for crushing to about 4 mm;

[0047] Concentrate and temper anaerobic fermentation high-ammonia-nitrogen biogas slurry to 3500mg / L, add biogas slurry storage tank 15 for temporary storage, set spray device 16 to spray according to the liquid-solid ratio of 25:1, and then transpo...

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Abstract

The invention discloses a system for preparing a high-nitrogen carbon-based fertilizer from straws and biogas slurry, and a method for preparing the high-nitrogen carbon-based fertilizer by utilizingthe system. The system comprises a raw material crushing device, a hardening and tempering stirring device, a pyrolysis carbonization furnace, a spraying device, a roller stirring device and a PLC control system; wherein the raw material crushing device, the hardening and tempering stirring device, the pyrolysis carbonization furnace and the roller stirring device are sequentially and directly connected or connected through a conveying belt, and the spraying device is located between the pyrolysis carbonization furnace and the roller stirring device. The PLC control system is electrically connected with the raw material crushing device, the hardening and tempering stirring device, the pyrolysis carbonization furnace, the spraying device and the roller stirring device. According to the invention, cyclic utilization and resource utilization of straws and biogas slurry are realized, the nitrogen content of charcoal fertilizer is increased, and the growth efficiency of crops is promoted.

Description

technical field [0001] The invention relates to the field of utilization of biogas slurry resources, in particular to a system for preparing high-nitrogen carbon-based fertilizer by using straw and biogas slurry and a method for preparing high-nitrogen carbon-based fertilizer. Background technique [0002] Crop straw is the main by-product of agricultural production. It is a renewable biomass resource rich in nitrogen, phosphorus, potassium and organic nutrients. As a large agricultural country, my country is rich in crop straw resources, with an annual output of 600-800 million tons. [0003] With the gradual improvement of farmers' living conditions, crop stalks are gradually turning into agricultural product waste, and straw burning still occurs during the busy farming seasons of spring and autumn every year, which not only wastes resources, but also causes environmental problems such as air pollution. [0004] In terms of utilization of crop straw resources, there are ma...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C05G3/40C05G3/80C01B32/05
CPCC05D9/00C05G3/00C01B32/05Y02P20/129
Inventor刘军冉根柱蔡琳琳戴昕郭燕巩小丽袁建海刘丹丹杨亚萍
OwnerNANJING WONDUX ENVIRONMENTAL PROTECTION TECH CO LTD