Method for preparing cow dung/coal gangue compound biomass fuels

A biomass fuel and coal gangue technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of infectious diseases, low utilization rate, environmental pollution, etc., and achieve high calcination temperature, full utilization, and fast combustion Effect

Inactive Publication Date: 2016-03-16
雷春生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: in view of the rapid development of my country's dairy cattle breeding industry, a large amount of cow dung is produced, which pollutes the environment, and the traditional method of treating cow dung is prone to infectious diseases, low utilization rate and high cost. Firstly, acid leaching is carried out on fresh cow dung to remove part of the metal impurities, and then it is mixed with calcium hydroxide, protected by hydrogen to increase its combustion value, and then mixed with activated modified coal gangue for fermentation. Carry out in-depth conversion to prepare a cow dung / coal gangue composite biomass fuel with high calorific value and long burning time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Take 1kg of fresh cow dung and put it into a pulverizer to pulverize it, sieve it to get 30 mesh cow dung particles, then dry the obtained cow dung particles naturally, when the water content is 10%, put it into a container, pour it into With a hydrochloric acid solution with a mass fraction of 60%, submerge the particles by 2cm, stir evenly, then move the container to an ultrasonic oscillator for oscillation, set the frequency to 15KHz, and oscillate for 30min; Put it into an oven, set the temperature at 60°C, keep the temperature for 1h, then take out the filtrate, mix it with calcium hydroxide at a mass ratio of 4:1, put the mixture into a container, and add 500mL of 30% hydrogen peroxide solution, use hydrogen to discharge the air in the container, then heat the container, set the temperature to 80°C, keep the temperature for 5h, then cool to room temperature, filter and collect the filtrate, and set aside; take 800g coal gangue, use Rinse its surface with water, th...

example 2

[0023]Take 3kg of fresh cow dung and put it into a pulverizer to pulverize it, sieve it to get 50 mesh cow dung particles, then dry the obtained cow dung particles naturally, when the water content is 15%, put it into a container, pour it into Hydrochloric acid solution with a mass fraction of 60%, submerge the particles for 5cm, stir evenly, then move the container to an ultrasonic oscillator for oscillation, set the frequency to 20KHz, and oscillate for 50min; Put it into an oven, set the temperature at 80°C, keep the temperature for 3 hours, then take out the filtrate, mix it with calcium hydroxide at a mass ratio of 4:1, put the mixture into a container, and add 900mL of 30% hydrogen peroxide solution, use hydrogen to discharge the air in the container, then heat the container, set the temperature to 90°C, keep the temperature for 10h, then cool to room temperature, filter and collect the filtrate, and set aside; take 1200g coal gangue, use Rinse its surface with water, th...

example 3

[0026] Take 2kg of fresh cow dung and put it into a pulverizer to pulverize it, sieve it to get 40 mesh cow dung particles, then dry the obtained cow dung particles naturally, when the water content is 12%, put it into a container, pour it into With a hydrochloric acid solution with a mass fraction of 60%, submerge the particles for 3cm, stir evenly, then move the container to an ultrasonic oscillator for oscillation, set the frequency to 18KHz, and oscillate for 40min; Put it into an oven, set the temperature at 70°C, keep the temperature for 2h, then take out the filtrate, mix it with calcium hydroxide at a mass ratio of 4:1, put the mixture into a container, and add 700mL of 30% hydrogen peroxide solution, use hydrogen to discharge the air in the container, then heat the container, set the temperature to 85°C, keep the temperature for 8h, then cool to room temperature, filter and collect the filtrate, and set aside; take 1000g coal gangue, use Rinse its surface with water, ...

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Abstract

The invention discloses a method for preparing cow dung / coal gangue compound biomass fuels, which belongs to the utilization filed of wastes, and aims to the problems that dairy farming in our country rapidly develops at present, a lot of cow dung is produced, and pollutes environment, a traditional cow dung treatment method is easy to produce infectious diseases, low in use ratio and high in cost. Fresh cow dung is dipped in acids to remove parts of metal impurities firstly, and then is mixed with calcium hydroxide, improves combustion value through protection of hydrogen, then is mixed with activated modified coal gangue to ferment, and then is deeply transformed through microorganisms, thereby preparing the cow dung / coal gangue compound biomass fuels with high calorific value and long burning time. The cow dung / coal gangue compound biomass fuels which are prepared through the method for preparing the cow dung / coal gangue compound biomass fuels are higher than common coals 25-35% in burning speed through examples testify, gas which is discharged from chimneys is detected without harmful gas, and the combustion heat value is 22000-26000kJ / kg.

Description

technical field [0001] The invention discloses a method for preparing cow dung / coal gangue composite biomass fuel, which belongs to the field of waste utilization. Background technique [0002] With the rapid development of the dairy farming industry, cow manure pollution has become a major problem. A cow produces more than 7 tons of feces every year. Every summer, the stench is so bad that a variety of bacterial pathogens breed and reproduce, which seriously affects the health and environmental sanitation of the breeding group. At the same time, incomplete fermentation of stacked cow dung can also produce methane gas, causing air pollution. According to relevant data, in some places, the pollution of cow dung to the environment has exceeded the total amount of industrial pollution. Because cow dung cannot be reasonably and effectively used and disposed of, it seriously pollutes the rural environment, endangers the physical and mental health of farmers, and restricts the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/46
CPCY02E50/10Y02E50/30
Inventor 雷春生宋国
Owner 雷春生
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