Preparation of biomass coal briquette by using common water hyacinths and anthracite fine coal

Abstract

The invention provides a method for utilizing common water hyacinths and anthracite fine coal to prepare bio-coal briquette, the method for producing bio-coal briquette comprises the following steps: evenly mixing anthracite fine coal, biomass and binder, and pressing to mold with a wet method. The invention is a new approach for developing anthracite fine coal and water hyacinth biomass energy, which utilizes common water hyacinths to be biomass source, the new approach changes wastes into valuables, which makes full use of own advantages of coals and common water hyacinths, and mutually learns from other's strong points to offset weakness, and the new approach utilizes high activities of common water hyacinths, overcomes the shortcomings of low energy density, improves gasification reactivity of low-activity anthracite fine coal, bio-coal briquette which is prepared has the advantages of low production cost, high activity, excellent intensity and the like, which has double functions of saving coal and replacing coal with biomass, and has great significance to protect environment and save energy.

Description

technical field

[0001] The invention belongs to the application field of chemical industry; more specifically, it relates to a water hyacinth biomass briquette and a preparation method thereof. Background technique

[0002] The scientific name of water hyacinth is "water hyacinth", which is an aquatic floating plant. Because water hyacinth reproduces extremely fast, it can usually increase from 10 to 600,000 within 8 months. If it is not salvaged in time, it will cover the water surface. Blocking river channels, affecting shipping, impeding drainage and irrigation, obstructing water flow during flood season, eventually rotting and smelling, polluting water quality, affecting the growth of underwater organisms, increasing the concentration of carbon dioxide in water, reducing the output of aquatic products, destroying biodiversity and ecological environment, and affecting water resources It is listed as one of the "Top Ten Harmful Weeds in the World", and is also listed as on...

Examples

preparation example Construction

[0015] The steps of the preparation method are as follows: sieve the anthracite pulverized coal and mix uniformly according to the stated ratio; crush the picked fresh water hyacinth to be less than 3mm; mix the water hyacinth and the binder uniformly according to the stated mass ratio, and then After the mixed raw coal and the above mixture are evenly mixed, they are formed by cold pressing with a mold and naturally matured at room temperature.

[0016] The cold strength of biomass briquettes is measured according to the method specified in GB / T15459, and the thermal stability is measured according to the method recorded in "Research on the Measurement of Thermal Stability of Briquettes", author: Zhang Chuanxiang et al., "Clean Coal Technology" Issue 04, 2001.

Embodiment 1

[0019] Sieve the anthracite pulverized coal, and crush the picked fresh water hyacinth to less than 3mm. Take by weighing water hyacinth 200g, binder industrial magnesia 50g, both mix evenly, then take by weighing raw material coal 750g mixed with the above-mentioned mixture in a certain proportion and mix evenly, with self-made mould, cold press molding, obtain diameter is 25mm, The height is 20mm biomass briquette, matured at room temperature. Then its cold strength, thermal stability and ash melting point were determined. The results are shown in Table 1.

Embodiment 2

[0021] The biomass briquettes used are the same as in Example 1, except that 250g of water hyacinth and 100g of industrial magnesia as a binder are mixed evenly, and then 650g of raw coal mixed in a certain proportion is weighed and mixed with the above-mentioned mixture , Then determine the cold strength, heat stability and ash melting point as in Example 1. The results are shown in Table 1.

technical field

[0001] The invention belongs to the application field of chemical industry; more specifically, it relates to a water hyacinth biomass briquette and a preparation method thereof. Background technique

[0002] The scientific name of water hyacinth is "water hyacinth", which is an aquatic floating plant. Because water hyacinth reproduces extremely fast, it can usually increase from 10 to 600,000 within 8 months. If it is not salvaged in time, it will cover the water surface. Blocking river channels, affecting shipping, impeding drainage and irrigation, obstructing water flow during flood season, eventually rotting and smelling, polluting water quality, affecting the growth of underwater organisms, increasing the concentration of carbon dioxide in water, reducing the output of aquatic products, destroying biodiversity and ecological environment, and affecting water resources It is listed as one of the "Top Ten Harmful Weeds in the World", and is also listed as on...

Examples

preparation example Construction

[0015] The steps of the preparation method are as follows: sieve the anthracite pulverized coal and mix uniformly according to the stated ratio; crush the picked fresh water hyacinth to be less than 3mm; mix the water hyacinth and the binder uniformly according to the stated mass ratio, and then After the mixed raw coal and the above mixture are evenly mixed, they are formed by cold pressing with a mold and naturally matured at room temperature.

[0016] The cold strength of biomass briquettes is measured according to the method specified in GB / T15459, and the thermal stability is measured according to the method recorded in "Research on the Measurement of Thermal Stability of Briquettes", author: Zhang Chuanxiang et al., "Clean Coal Technology" Issue 04, 2001.

Embodiment 1

[0019] Sieve the anthracite pulverized coal, and crush the picked fresh water hyacinth to less than 3mm. Take by weighing water hyacinth 200g, binder industrial magnesia 50g, both mix evenly, then take by weighing raw material coal 750g mixed with the above-mentioned mixture in a certain proportion and mix evenly, with self-made mould, cold press molding, obtain diameter is 25mm, The height is 20mm biomass briquette, matured at room temperature. Then its cold strength, thermal stability and ash melting point were determined. The results are shown in Table 1.

Embodiment 2

[0021] The biomass briquettes used are the same as in Example 1, except that 250g of water hyacinth and 100g of industrial magnesia as a binder are mixed evenly, and then 650g of raw coal mixed in a certain proportion is weighed and mixed with the above-mentioned mixture , Then determine the cold strength, heat stability and ash melting point as in Example 1. The results are shown in Table 1.