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Method for preparing bitumite substitute fuel by using paper-making waste disposal basin mud

A technology for papermaking waste water and alternative fuels, applied in the direction of waste fuels, fuels, solid fuels, etc., can solve undiscovered, unobtained people, environmental pollution and other problems, achieve good combustion conditions, solve environmental pollution, and the method is simple and easy Effect

Inactive Publication Date: 2009-12-30
刘长欣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the enhancement of people's awareness of environmental protection and the strengthening of national environmental protection requirements, most of the wastewater discharged from paper mills needs to be strictly treated. However, the sludge generated by papermaking wastewater treatment will still pollute the environment, and has not received enough attention from people so far. Pay attention to
There are few patent documents on the treatment of papermaking wastewater pond sludge, and no Chinese patent documents on the preparation of bituminous coal alternative fuels from papermaking wastewater pond sludge have been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A kind of method that utilizes papermaking wastewater pool mud to prepare bituminous coal alternative fuel, the steps are as follows:

[0022] (1) Dehydrating the pulpy pond mud produced by papermaking wastewater treatment to make pond mud blocks with a water content less than 40wt%;

[0023] (2) 2.5 liters of NaOH solution with a concentration of 1.5wt% was used to soak 1000 grams of the above-mentioned pool mud block for 30 minutes, so as to remove the flame-retardant components therein;

[0024] (3) Dry the soaked pool mud block obtained in step (2) and crush it into pool mud fragments with a particle size of 3 cm, put it in an oven, and bake at 120° C. for 40 minutes to make the water content less than 5 wt%. The calorific value of the obtained pool mud debris is about 4500-5000 kcal / kg, and the combustion condition is good, so it can be directly used as bituminous coal instead of fuel.

Embodiment 2

[0025] Embodiment 2: A kind of method that utilizes papermaking waste water pool mud to prepare bituminous coal alternative fuel, the steps are as follows:

[0026] (1) Dehydrating the pulpy pond mud produced by papermaking wastewater treatment to make pond mud blocks with a water content less than 40wt%;

[0027] (2) 1200 grams of the above-mentioned pool mud block are soaked for 40 min with 3 liters of NaOH solution with a concentration of 2 wt%, for the purpose of removing flame retardant treatment;

[0028] (3) Dry the soaked pond mud block obtained in step (2) and crush it into pond mud fragments with a particle size of 2 cm, place it in an oven at 115° C., and bake for 50 minutes to obtain a pond with a water content of less than 5 wt%. mud meal fuel;

[0029] (4) above-mentioned steps (3) gained pond mud coarse powder fuel is further pulverized into the pond mud powder that particle diameter is less than 2mm, this pond mud powder 750 grams, add the coal slime powder (w...

Embodiment 3

[0030] Embodiment 3: As described in Embodiment 2, the difference is:

[0031] Step (4) Take 800 grams of pool mud powder with a particle size of less than 2 mm, add 200 grams of dry coal slime powder (4:1 by weight), and then add 300 ml of water, mix evenly, and use a twin-roller molding machine to extrude into a particle size The 3cm spherical fuel is baked in an oven at 90°C for 3.5 hours to make the water content less than 5wt%. The calorific value of the obtained spherical fuel is 4500-5000 kcal / kg.

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Abstract

The invention relates to a method for replacing fuel with bituminous coal made up of tool clay in the waste water tool for paper manufacture. The raw material of the product is tool clay when processing the waste water from the paper mill. The tool clay is dehydrated, dried, soaked with NaOH solution, smashed, baked into a fuel that is replaceable to bituminous coal, and then the coal slurry is added as binding agent, then a finished product is made. The calorific volume of the product is 4500-5000 kilocalories per kilogram, and the burning efficiency turns out satisfactory. The invention can totally eliminate the industrial pollution caused by paper manufacturing and changing the pollutants into new energy.

Description

technical field [0001] The invention relates to a method for preparing a bituminous coal substitute fuel by using pond sludge produced by wastewater treatment in a paper mill as a main raw material, and belongs to the technical field of environmental protection and chemical engineering. Background technique [0002] The paper industry is a major source of wastewater discharge. With the enhancement of people's awareness of environmental protection and the strengthening of national environmental protection requirements, most of the wastewater discharged from paper mills needs to be strictly treated. However, the sludge generated by papermaking wastewater treatment will still pollute the environment, and has not received enough attention from people so far. Pay attention to. There are very few patent documents on the treatment of papermaking wastewater pond sludge, and no Chinese patent documents on the preparation of bituminous coal substitute fuel from papermaking wastewater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/48C10L5/04
CPCY02E50/30
Inventor 杨小凤刘长欣
Owner 刘长欣
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