Method for preparing composite biomass type coal adhesive

A biomass and binder technology is applied in the field of preparation of composite biomass briquette binder, which can solve the problems of poor cohesion, unsatisfactory briquette compression, waterproof and combustion performance, and briquette stickiness. The problem of low sulfur solidification rate of the binder can achieve the effect of prolonging the storage period, good bonding and easy transportation.

Inactive Publication Date: 2017-09-05
CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: aiming at the defects of low sulfur fixation rate and poor cohesiveness of existing briquette binders, and unsatisfactory effects on improving the pressure resistance, waterproof and combustion performance of briquettes, it provides a Preparation method of composite biomass briquette binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] First weigh 50g of potato starch, add 100mL of deionized water, stir and mix at 300r / min for 10min, then use 5% sodium hydroxide solution to adjust the pH to 9.0, then add 10mL of 0.2% iron sulfate solution, 6mL Hydrogen peroxide, and heated to 40 ° C for 3 hours, cooled to room temperature to obtain a mixed solution, with a mass fraction of 5% sodium hydroxide solution to adjust the pH of the mixed solution to 6.5, and let it stand for 1 hour, filtered to obtain a filter residue, and deionized water Wash the filter residue twice, then place the washed filter residue in a drying oven, dry to constant weight at 105°C, then transfer the dried filter residue to a pulverizer for crushing, pass through a 200-mesh sieve to obtain oxidized starch, and weigh 120g of furfural slag, air-dried naturally, put it into a pulverizer and pulverized, passed through a 200-mesh sieve, weighed 100g of sieved furfural slag powder, added it to 200mL of 10% sulfuric acid solution, reacted at 6...

example 2

[0032] First weigh 55g of lotus root starch, add 110mL of deionized water, stir and mix at 350r / min for 13min, then use 5% sodium hydroxide solution to adjust the pH to 9.3, then add 13mL of 0.2% iron sulfate solution, 8mL Hydrogen peroxide, and heated to 43 ° C for 3 hours, cooled to room temperature to obtain a mixed solution, with a mass fraction of 5% sodium hydroxide solution to adjust the pH of the mixed solution to 7.0, and let it stand for 1 hour, filtered to obtain a filter residue, and deionized water Wash the filter residue twice, then place the washed filter residue in a drying oven, dry to constant weight at 108°C, then transfer the dried filter residue to a pulverizer for crushing, pass through a 200-mesh sieve to obtain oxidized starch, and weigh 135g of furfural slag, air-dried naturally, put it into a pulverizer and crushed, passed through a 200-mesh sieve, weighed 110g of sieved furfural slag powder, added it to 250mL of 10% sulfuric acid solution, reacted at ...

example 3

[0037] First weigh 60g of water chestnut starch, add 120mL of deionized water, stir and mix at 400r / min for 15min, then adjust the pH to 9.5 with a mass fraction of 5% sodium hydroxide solution, then add 15mL of a mass fraction of 0.2% iron sulfate solution, 10mL Hydrogen peroxide, and heated to 45 ° C for 4 hours, cooled to room temperature to obtain a mixed solution, with a mass fraction of 5% sodium hydroxide solution to adjust the pH of the mixed solution to 7.5, and let it stand for 2 hours, filtered to obtain a filter residue, and deionized water Wash the filter residue 3 times, then place the washed filter residue in a drying oven, dry to constant weight at 110°C, then transfer the dried filter residue to a pulverizer for crushing, pass through a 200-mesh sieve to obtain oxidized starch, and weigh 150g of furfural slag, air-dried naturally, put it into a pulverizer and pulverized, passed through a 200-mesh sieve, weighed 120g of sieved furfural slag powder, added it to 3...

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Abstract

The invention belongs to the technical field of briquette coal preparation, and in particular relates to a method for preparing a composite biomass type coal adhesive. The method comprises the following steps: by plant starch as a raw material, performing oxidation with ferric sulfate and hydrogen peroxide so as to obtain oxidized starch, further drying furfural residues in the air, crushing, pretreating with a sulfuric acid solution, performing cross-linking modification on the oxidized starch, biomass gum, sodium humate and the like so as to improve the affinity with powdered coal granules and feed the mixture into micropores of powdered coal to moisten the surface of the powdered coal, further compounding with the pretreated furfural residues, a polyvinyl alcohol solution and the like, and loading calcium hydroxide by a great deal of cellulose in the furfural residues for synergic sulfur fixation, thereby obtaining the composite biomass type coal adhesive. The composite biomass type coal adhesive provided by the invention is relatively good in adhesion and sulfur fixation functions, has relatively good effects of damp and water resistance, combustion performance and pressure and crushing resistance of improved coal, and is relatively good in storage stability.

Description

technical field [0001] The invention belongs to the technical field of briquette preparation, and in particular relates to a preparation method of a composite biomass briquette binder. Background technique [0002] Briquette is a kind of secondary processed coal which is made by adding briquette binder to pulverized coal, which is used in gasifier and replaces anthracite lump coal. At present, briquette technology has been regarded as the main component of clean coal technology, and briquette binder is the key technology in the production of briquette, especially in the cold pressing process. At present, the selection of briquette binder mainly has the following basic requirements: (1) Strong binding effect on pulverized coal, so that the briquette has sufficient cold and hot strength and mechanical strength; (2) The amount of binder added (3) Has certain moisture-proof and waterproof properties; (4) Does not affect gasification effect, gas quality and operability of furnac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/14
CPCY02E50/30C10L5/14
Inventor 龙海燕杨阳孙冬
Owner CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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