Method for producing low-sulfur briquette by utilizing abandoned biomass of saline-alkali soil

A production method and biomass technology, applied in the direction of biofuel, waste fuel, etc., can solve the problems of complex process, difficult processing, low coal utilization efficiency, etc., and achieve the effect of simple operation and feasible production process

Inactive Publication Date: 2015-10-21
NANKAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low coal utilization efficiency and easy environmental pollution, overcome the shortcomings of traditional briquette production technology, such as complicated process, difficult processing and high cost, and provide a kin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for producing clean biomass briquettes, comprising the following steps:

[0017] Poplar tomentosa ( Populus tomentosa ), crushed to a particle size of less than 1mm. The raw coal is coal produced in Datong, crushed to a particle size of less than 1mm. The pulverized wood and 2% sodium hydroxide solution were uniformly mixed according to the mass ratio of 4:100, and heated to 90°C for 2 hours to obtain a binder. Mix the crushed and screened granular or powdered calcium carbonate with an acidity of 1.2 moles per liter of wood acetic acid at a mass ratio of 5:100, and react at a temperature of 25°C for 3 hours to make a desulfurizer. Keep the mass ratio of binder and raw coal at 30:100, and the calcium-sulfur ratio of desulfurizer and coal at 1.2:1, mix and stir the binder, desulfurizer and coal powder evenly, and press molding under a molding pressure of 18Mpa. Made into biomass briquette products. The prepared briquette product has been analyzed and tested,...

Embodiment 2

[0019] A method for producing clean biomass briquettes, comprising the following steps:

[0020] The biomass is Populus tomentosa Bauhinia ( Cercis chinensis ), crushed to a particle size of less than 1mm. The raw coal is coal produced in Datong, crushed to a particle size of less than 1mm. The crushed wood and 1.5% sodium hydroxide solution were uniformly mixed according to the mass ratio of 4:100, heated to 90°C for 1.5h to obtain the binder. Mix the crushed and screened granular or powdered calcium carbonate with an acidity of 0.5 moles per liter of wood acetic acid at a mass ratio of 2:100, and react at a temperature of 50°C for 1 hour to make a desulfurizer. Keep the binder and raw coal at a mass ratio of 30:100, and the desulfurizer and coal at a calcium-sulfur ratio of 1.2:1, mix and stir the binder, desulfurizer and coal powder evenly, and press molding under a molding pressure of 20Mpa. into biomass briquette products. The prepared briquette product has been anal...

Embodiment 3

[0022] A method for producing clean biomass briquettes, comprising the following steps:

[0023] Biomass adopts weeping willow ( Salix babylonica ), crushed to a particle size of less than 1mm. The raw coal is coal produced in Datong, crushed to a particle size of less than 1mm. The pulverized wood and 2.5% sodium hydroxide solution were uniformly mixed according to the mass ratio of 4:100, and heated to 90°C for 2 hours to obtain a binder. Mix the crushed and screened granular or powdered calcium carbonate with an acidity of 1.0 moles per liter of wood acetic acid at a mass ratio of 3:100, and react at a temperature of 25°C for 3 hours to make a desulfurizer. Keep the binder and raw coal at a mass ratio of 30:100, and the desulfurizer and coal at a calcium-sulfur ratio of 1.3:1, mix the binder, desulfurizer and coal powder evenly, and press molding under a molding pressure of 20Mpa to produce Biomass briquette products. The prepared briquette product has been analyzed an...

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Abstract

The invention discloses a production method of clean biomass briquette. The production method comprises the following steps of: crushing raw coal and biomass materials into a certain particle size range; adding the crushed biomass raw materials to an alkali solution with a certain concentration, heating the crushed biomass materials and the alkali solution for a certain time, using the mixed solution obtained after treatment as binder; mixing calcium carbonate and pyroligneous acid according to the mass ratio of the calcium carbonate to the pyroligneous acid being 0.5-8:100, and reacting the calcium carbonate and the pyroligneous acid at the temperature of 20-100 DEG C so as to prepare a desulfurizing and denitrfying agent, wherein the reaction time is 0.5-10h; and uniformly mixing the binder, the desulfurizing agent and the crushed raw coal according to a certain proportion so as to obtain a mixture, performing pressing forming on the material mixture of the under a certain forming pressure, demouding the formed briquette, and drying the demoulded briquette so as to obtain biomass briquette products. The production technology adopted by the method disclosed by the invention is feasible and is simple to operate, waste is not generated, the combustion efficiency of the briquette is improved, and besides the pollutant discharge is reduced. Through effective combination of the biomass and the coal raw materials, the reclamation of biomass type solid waste and the high-efficiency cleaning and utilizing of coal are synchronously realized.

Description

technical field [0001] The invention relates to the fields of clean coal application and biomass resource utilization, in particular to a method for producing low-sulfur clean briquette by using waste biomass in saline-alkali land as a raw material. Background technique [0002] Energy is a key element related to the national economy and people's livelihood, and sufficient energy supply can support sustainable economic and social development. The resource characteristics of "rich coal, little gas, and lack of oil" determine that my country's economic development must be highly dependent on coal resources. At present, coal accounts for as much as 75% of my country's primary energy, and a large amount of energy will still be needed for a long period of time in the future. Use coal resources. The massive consumption of coal has caused many serious environmental problems, and severe air pollution, mainly smog, has cast a shadow over sustainable development. In response to the s...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 侯其东李维尊王强鞠美庭刘乐杨茜王京钰
Owner NANKAI UNIV
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