Method for preparing methane and barbecue charcoal from rhizoma curcumae dregs

A technology for grilling charcoal and medicinal residues, which can be applied to solid fuels, biofuels, waste fuels, etc., can solve problems such as pollution, waste of resources and environment, and reduce production costs, and achieve the effects of reducing environmental pollution, saving resources, and reducing production costs.

Inactive Publication Date: 2016-11-09
广西南宁荣威德新能源科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0008] The invention provides a method for preparing methane and barbecue charcoal from zedoary dregs to solve the problems of treating zedoary dregs as garbage or drying them as fuel, resulting in a large amount of waste of resources and environmental pollution. The method of the present invention is the largest Maximize the use of zedoary dregs, realize the purpose of full resource utilization of zedoary dregs bio-fermentation to methane, and pyrolysis of fermentation residues to prepare biochar, which can not only greatly reduce production costs, but also reduce environmental pollution and save resources. Promote resource recycling, have good economic and environmental benefits, provide a scientific basis for the resource utilization of similar lignocellulosic wastes, and have broad market prospects

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  • Method for preparing methane and barbecue charcoal from rhizoma curcumae dregs

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preparation example Construction

[0059] The preparation method of described pyrolysis catalyst comprises the following steps:

[0060] S71: Mix alkaline clay, cobalt oxide, nickel oxide, titanium oxide, aluminum oxide, zinc oxide, and water glass for 8-12 minutes at a stirring speed of 100-160 r / min to prepare spherical particles I;

[0061] The preparation method of alkaline clay described in step S71, comprises the following steps:

[0062] S711: Mix bentonite and activated clay wastewater with a concentration of 10% in a weight ratio of 2:9, and stir evenly at a speed of 300 r / min to obtain slurry material I;

[0063] S712: Add the slurry material I prepared in step S711 to the inorganic mixed acid with a concentration of 16%, the inorganic mixed acid is phosphoric acid with a concentration of 19wt%, hydrochloric acid with a concentration of 38wt%, and sulfuric acid with a concentration of 27wt% by volume Mixed acid composed of 3:3:2, the weight ratio of slurry material I to inorganic mixed acid is 2:10, ...

Embodiment 1

[0081] A method for preparing methane and barbecue charcoal from zedoary dregs, comprising the following steps:

[0082] S1: drying zedoary dregs with hot air to a water content of 14% to obtain dried zedoary dregs. The hot air is obtained by heat exchange between coal flue gas and air, and the temperature of the coal flue gas is 940°C. The air temperature is 20°C, and the hot air temperature is 360°C;

[0083] S2: pulverize the dried zedoary dregs prepared in step S1, and pass through a 150-mesh sieve to obtain a pulverized dried zedoary dregs;

[0084] S3: Add a potassium hydroxide solution with a concentration of 15% to the dried zedoary dregs pulverized material obtained in step S2, and stir for 7 minutes at a rotating speed of 120 r / min, so that the zedoary dregs are completely immersed in the potassium hydroxide solution, And soaking at a temperature of 45°C for 18 hours to obtain pretreated curcuma dregs;

[0085] S4: Mix the zedoary dregs and sludge after the pretreatm...

Embodiment 2

[0110] A method for preparing methane and barbecue charcoal from zedoary dregs, comprising the following steps:

[0111] S1: Dried zedoary dregs with hot air to a moisture content of 13% to obtain dried zedoary dregs. The hot air was obtained by heat exchange between coal flue gas and air, and the temperature of the coal flue gas was 920°C. The air temperature is 4°C, and the hot air temperature is 250°C;

[0112] S2: pulverize the dried zedoary dregs prepared in step S1, and pass through a 100-mesh sieve to obtain a pulverized dried zedoary dregs;

[0113] S3: Add a potassium hydroxide solution with a concentration of 8% to the dried zedoary dregs pulverized material obtained in step S2, and stir for 8 minutes at a rotating speed of 80 r / min, so that the zedoary dregs are completely immersed in the potassium hydroxide solution, and soaked at a temperature of 42°C for 16 hours to obtain pretreated zedoary dregs;

[0114] S4: the zedoary dregs and the sludge after the pretrea...

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Abstract

The invention discloses a method for preparing methane and barbecue charcoal from rhizoma curcumae dregs, and belongs to the technical field of biomass energy. The methane and barbecue charcoal prepared from the rhizoma curcumae dregs is prepared through the steps of rhizoma curcumae dreg drying, smashing, fermentation, biogas residue drying and smashing, gasification, carbonization, compression molding and the like. By means of the method for preparing the methane and barbecue charcoal from the rhizoma curcumae dregs, the rhizoma curcumae dregs are utilized to the maximum extent, full resource utilization purposes of methane preparation through rhizoma curcumae dreg biological fermentation and barbecue charcoal preparation through fermentation residue pyrolysis are achieved, the production cost can be greatly reduced, environmental pollution can be reduced, resource can be saved, resource recycling utilization is promoted, good economic benefit and environmental benefit are achieved, a scientific basis is provided for resource utilization of similar lignocellulose waste, and a wide market prospect is achieved.

Description

【Technical field】 [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a method for preparing methane and barbecue charcoal from zedoary dregs. 【Background technique】 [0002] Existing barbecue charcoal comprises the rough charcoal produced by traditional earthen kiln, as bamboo charcoal, charcoal etc. and the firelighter that is made up of combustible material and combines with coal to make stick charcoal. Traditional coarse charcoal has low technical content, unreasonable earth kiln structure, high defective rate and relatively low conversion rate of raw materials. Traditional barbecue charcoal is fired from trees. In order to meet the production needs, a large number of trees are cut down, causing irreversible damage to forest trees. In the current situation where the forest coverage rate is getting lower and lower and the greenhouse effect is getting worse, the production of traditional barbecue charcoal is increasingly thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C12P5/02
CPCC10L5/44C12P5/023Y02E50/10Y02E50/30
Inventor 覃央央
Owner 广西南宁荣威德新能源科技有限公司
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