Method and product application of biomass ammonification pyrolysis for co-production of ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt

A technology of biomass charcoal and bio-oil, applied in the application, ammonium salt fertilizer, petroleum industry and other directions, can solve the problems of low nutrient and high acidity of bio-oil, and achieve the effect of improving the agricultural value and the potential of producing specific chemicals.

Active Publication Date: 2022-04-26
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method and product application of biomass ammonification pyrolysis co-production ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt, which solves the problem of combining biomass pyrolysis process with carbon-based slow-release The problem of complex fertilizer production process solves the defects of low nutrient and high acidity of bio-oil, and solves the problem of integrating mixed gas purification and recycling to produce ammonium salt fertilizer

Method used

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  • Method and product application of biomass ammonification pyrolysis for co-production of ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt
  • Method and product application of biomass ammonification pyrolysis for co-production of ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt
  • Method and product application of biomass ammonification pyrolysis for co-production of ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt

Examples

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Effect test

Embodiment 1

[0091] A method for producing bone char-based ammonium phosphate calcium fertilizer by ammonification and pyrolysis of bone meal, specifically comprising the following steps:

[0092] (1) Crushing animal bones to a particle size of ≤5 mm to obtain animal bone powder; wherein, the animal bones can be derived from any animal, for example, the animal bones are at least one of pig bones, bovine bones, and sheep bones;

[0093] (2) drying the animal bone powder obtained in step (1) to a water content of ≤10% by drying in the sun or drying equipment for pre-process drying;

[0094](3) The animal bone meal obtained in step (2) is metered into slow pyrolysis furnaces that have been preheated to process temperatures of 300°C, 400°C, and 500°C through a closed-air feeder (implemented in different examples), and simultaneously Ammonia gas heated to a temperature of 400° C. through the ammonia gas control supply system and the step-by-step heating pipeline is introduced into the slow pyro...

Embodiment 2

[0113] A method for producing ammoniated biochar, ammoniated bio-oil and fertilizer by slow-speed ammonification and pyrolysis of waste biomass of tobacco stalks and tendons (tobacco stalks and tendons particles), specifically comprising the following steps:

[0114] (1) crushing the waste biomass of tobacco stalks and tendons to the biomass particles of tobacco stalks and tendons smaller than 5 mm;

[0115] (2) drying the tobacco stalk and tendon biomass particles pulverized in step (1) to a moisture content of ≤10% through preheating and drying equipment;

[0116] (3) The tobacco stalk and tendon biomass particles dried in step (2) are sent into the biomass silo with a conveyor belt, and the tobacco stalk and tendon particles in the silo are sent to the screw feeding nozzle through a closed-air feeder, and are fed by the screw The device is metered and pushed into the rotary drum pyrolysis furnace which is preheated to the target temperature of 450°C; during the process of f...

Embodiment 3

[0127] A method for producing carbon-based slow-release compound fertilizer by slow pyrolysis of livestock and poultry manure in an ammonia atmosphere, specifically comprising the following steps:

[0128] (1) Livestock and poultry manure (pig manure) is dried by preheating drying equipment until the moisture content is ≤10%;

[0129] (2) The livestock and poultry manure with a water content lower than 10% obtained in step (1) can be directly sent into the pyrolysis reaction furnace through metering and feeding equipment, or after granulating biomass particles with a biomass granulator, and then Feed into the pyrolysis reaction furnace through metering and feeding equipment, and the loose livestock and poultry feces powder particles will increase their mass density after granulation, which is conducive to improving the amount of materials fed and pyrolysis efficiency.

[0130] (3) The livestock and poultry feces biomass granules obtained in step (2) are sent into the biomass s...

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Abstract

The present invention relates to the method and product application of biomass ammonification pyrolysis co-production ammoniated biomass charcoal, ammoniated bio-oil and ammonium salt. The heating rate is raised to 350°C-650°C, and the residence time of the material and steam in the furnace is 0.5-1h, so that the biomass undergoes slow pyrolysis and ammoniation reaction, and after separation, the ammonification pyrolysis steam and ammoniation product are obtained. material charcoal; the ammoniated pyrolysis steam is condensed and separated to obtain ammoniated bio-oil and mixed gas; the ammonia in the mixed gas is absorbed with dilute acid solution to obtain ammonium salt solution and absorbed mixed gas, and the The ammonium salt solution is crystallized and separated to obtain the ammonium salt. The method of the invention utilizes the chemical reaction and adsorption between the pyrolysis products of each stage produced during biomass pyrolysis and ammonia to produce ammoniated biomass charcoal, ammoniated bio-oil and mixed gas containing free ammonia, and recovers the mixed gas with fertilizer acid The residual ammonia in the fertilizer is obtained.

Description

technical field [0001] The invention relates to the fields of utilization of biomass resources and production of agrochemicals, in particular to a method and product application of ammoniated biomass charcoal, ammoniated biological oil and ammonium salt produced by ammoniated pyrolysis. Background technique [0002] Biochar and bio-oil are solid and liquid products produced by modern pyrolysis or gasification thermochemical conversion process. Functional and multi-purpose innovative materials have been extensively researched, produced and applied. There are also many research reports on bio-oil as a soil improver, fertilizer synergist and plant growth promoter, and its uses and products are also being continuously developed. However, since the vast majority of biochar is organic matter with high carbon and low nutrients, due to its high C / N ratio and high adsorption capacity, it competes with plants for available soil nutrients, especially for soil available nitrogen, after...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/00C10B57/04C10K1/04C05C3/00
CPCC10B53/00C10B57/04C10K1/04C05C3/00Y02P20/129Y02P60/21
Inventor 何绪生宛甜阮小凤徐世彦耿增超王安柱蔡宇良
Owner NORTHWEST A & F UNIV
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