CN102191100A

CN102191100A - Biomass moulded coal

Info

Publication number: CN102191100A
Application number: CN201110088656XA
Authority: CN
Inventors: 邵俊杰; 朱书全; 苏晓辉; 刘红缨; 陈元春; 杨玉立; 李玉洁
Original assignee: Shenhua Group Corp Ltd; China University of Mining and Technology Beijing CUMTB; Shenhua International Trading Co Ltd
Current assignee: China University of Mining and Technology Beijing CUMTB; China Energy Investment Corp Ltd; Shenhua International Trading Co Ltd
Priority date: 2010-04-09
Filing date: 2011-04-08
Publication date: 2011-09-21
Also published as: CN102191095A; CN102191099A; CN102191101B; CN102191097B; CN102191097A; CN102191098A; CN102191101A; CN102191096A

Abstract

The invention relates to a biomass moulded coal which comprises the following components in parts by mass: 50 to 90 parts of raw coal and 10 to 50 parts of biomass, wherein the biomass is selected form grass family plants, agricultural wastes, forestry biomasses, aquatic plants and energy plants or a mixture thereof. The biomass moulded coal is obtained by the following steps of: crushing the 50 to 90 parts of the raw coal and the 10 to 50 parts of the biomass by mass; screening out powdered coal and biomass with preset particle sizes by using a screening device; heating the powdered coal and biomass in proportion respectively or together to a preset temperature, and keeping the temperature for a preset time; performing extrusion forming on the powdered coal and biomass by using an extrusion forming die or an extrusion forming machine under a preset pressure; and cooling the formed moulded coal and then de-moulding the moulded coal to obtain a biomass moulded coal product without a caking agent. The biomass moulded coal provided by the invention is not added with additional caking agents, is simple to produce, has high strength and water resisting property, and meets the requirements of long-distance transport and outdoor storage.

Description

A kind of biomass coal

Technical field

The invention belongs to clean coal Application Areas, more specifically relate to a kind of biomass coal, relate in particular to a kind of binder free biomass coal.

Background technology

China is second-biggest-in-the-world energy expenditure state, and primary energy source is based on coal, and the production of China's coal at present accounts for more than 75% in constituting with being consumed in primary energy source, becomes maximum in the world coal production and country of consumption.Characteristics and socioeconomics according to China's Energy resources can predict that in following considerable time, China will be the main production and consumption state of coal.

Coal in China retained reserve, stock number and prognostic resources add up 55,697 hundred million tons, and wherein low bituminous coal and the brown coal that become degree account for more than 50% of coal retained reserve, and these coal resources are distributed in outlying areas such as Inner Mongol and Xinjiang more.How clean, efficiently, reasonably utilize the limited coal resources of China, particularly the coal resources of the high interior low-calorie low metamorphic grade of water of the northwestward have very important strategic importance and practical significance for the society of China and the Sustainable development of national economy.

China also is a large agricultural country, and the biomass energy resource is also very abundant, and its potentiality are amounted to about 700,000,000 tons, and the year actual usage quantity of China is about 2.2 hundred million tons at present.Therefore, the utilization of the biomass resource of China also has very big potentiality to be exploited.Biomass energy uses ratio shared in the structure of energy minimum in China's commerce.Plant has half to abandon not give in wilderness and utilize even burn approximately, not only utilizes level low, causes the serious waste of resource, and contaminate environment.A considerable number of trade waste is dropped.

Trade waste and municipal wastes enormous amount, and in cumulative rises year by year, and air storage or landfill not only take a large amount of soils, and easily soil, underground water, atmosphere are caused great secondary pollution, become serious environmental problem.So fully biomass energy is used in reasonable development, improve the energy utilization environment and the human ecotope of China, the higher-grade utilization that strengthens biomass energy has great importance.

Biomass and coal cofiring generating at present is widely studied, have many good qualities, but its burning utilization also faces many difficulties, as the obstructing problem in bulk density and the low transportation that causes of energy density, storage, the rising of scrap build cost, boiler thermal output decline and the feeding equipment; Biomass fiber cellulose content height is difficult for the problem of pulverizing; It is big to form difference between biomass, is difficult to substitute the problem of using; Basic metal in the biomass ash and alkaline earth metal content height cause the corrosion of equipment and slagging scorification problem etc.The problems referred to above may be improved by the biomass coal technology.

At the Energy Situation of China present stage and the energy structure policy of Future in China, if the biomass of renewable energy source and traditional primary energy source coal are combined dexterously, not only provide possible effective way for the utilization of biomass energy heavy industrialization, opened up energy frontier, rationally utilized the energy efficiently, and a kind of extremely vital novel energy---the biomass coal that has been born.Biomass coal is as novel energy, be alleviating energy crisis, efficiently utilize renewable energy source, protection environment, solve the insufficient effective way of traditional industry moulded coal combustionproperty.

It is later in China biomass to be used for shaped coal technology research, but development is very fast.At present existing many research institutions and coal enterprise are studied, and the patent application of at present relevant biomass coal has, and as Chinese patent application CN101629112A, discloses a kind of biomass coal, has wherein added 0.5%～1% binding; Chinese patent application CN101250454A discloses a kind of biomass coal, wherein biomass has been carried out alkaline purification, and has added one or more binding agents as biomass coal in industrial magnesium oxide, calcium oxide and the wilkinite; Chinese patent application CN101148622A discloses a kind of sandwich biomass briquette, has wherein added magnesium oxide and magnesium chloride solution as tackiness agent; Chinese patent application CN101089154A discloses in producing the biomass coal process, adds tar or PAM, potassium permanganate, unslaked lime; Chinese patent application CN1793297A discloses a kind of biomass coal, has added the cementitious additives wilkinite in wherein producing.As mentioned above, in the existing disclosed relevant patent application of biomass coal all in various degree adding this area binding agent commonly used, for example loess, pitch etc., some has also added sulphur-fixing agent and water-resisting agent, though this has improved the solid sulphur of moulded coal and the performance of waterproof to a certain extent, production cost improves greatly; And biomass coal technology is produced in alkaline purification because the highly basic that adds has corrodibility, and is very high to the requirement of equipment; In addition, make shaped coal additive with spent pulping liquor, the coking component is few, and the moulded coal that obtains does not have water-repellancy.

The applicant has applied for the Chinese invention patent application of denomination of invention for " roller briquetting machine of a kind of fine coal binder free forming method and this method of being suitable for " on October 27th, 2008, and application number is 200810224197.1, and this method comprises:

First step filters out the fine coal of granularity≤6mm by screening plant, and this fine coal is carried out drying and dehydrating handle, and the control moisture content is 2-15%;

Second step, with the fine coal of first step gained by the feeding machine enforce compression be fed into roller briquetting machine between roller gap;

Third step, the roller briquetting machine running, the pair roller that is furnished with pit on the circular surfaces of at least one roller rotates continuously, goes out moulded coal by described pit compaction moulding.

But there is certain problem in this method, promptly the place of production for weakly caking coal such as para-bituminous coal to be formed or person in middle and old age's brown coal and non-caking coal requires high, have only weakly caking coals such as the para-bituminous coal of particular locality or person in middle and old age's brown coal and non-caking coal can reach the moulding purpose, para-bituminous coal or the person in middle and old age's brown coal produced as area, Hulun Buir, the Inner Mongol, but for the but independent moulding of difficult employing aforesaid method of the low metamorphic grade coal of producing in a large number as the Inner Mongol, briquette strength after the moulding is not enough, in transportation, be easy to fragmentation, and water-repellancy is not good.

Current situation at present biomass coal, and the low metamorphic grade coal that the Inner Mongol produces is than the difficult characteristics of moulding separately, the inventor invents out good waterproof performance, and the biomass coal that ultimate compression strength is big is to solve the problem that exists in present biomass coal and the production process thereof.

Simultaneously, moderate tack and/or high viscosity low metamorphic grade coal such as para-bituminous coal or person in middle and old age's brown coal for moulding separately, utilize biomass coal of the present invention can effectively utilize local rich (a) draft section plant that produces, (b) agricultural wastes, (c) forestry biomass, (d) waterplant, and (e) energy-source plant are as stalk of grass or the wood chip the like waste that wood working produced.

Summary of the invention

In order to solve existing technical problem, and overcome the shortcoming that biomass coal of the prior art exists, one object of the present invention is to provide a kind of binder free biomass coal, comprises or is made up of following:

The raw coal of 50～90 mass parts, and

The biomass of 10～50 mass parts, wherein, described biomass are selected from: (a) draft section plant, (b) agricultural wastes, (c) forestry biomass, (d) waterplant, and (e) energy-source plant etc., or their mixture,

Wherein, with the raw coal of 50～90 mass parts and the biomass fragmentation of 10～50 mass parts, and filter out the fine coal and the biomass of predetermined particle size by screening plant, and this fine coal and biomass are proportionally heated up respectively or be warming up to preset temperature together, and keep this temperature scheduled time, utilize then pressurizing mould or pressure forming machine under predetermined pressure with described fine coal and described biomass extrusion forming, with the demoulding of the cooling back of the moulded coal after the moulding, obtain the biomass type product of coal.

Preferably, wherein said biomass are the vegetal biomass that contain xylogen, as draft and/or woody vegetal biomass, be selected from herbage, weeds, stalk, shell, fruit stone, corn cob, fuel wood, fallen leaves, bark, tree root and forestry processing waste, reed, pasture and water, grow rapid, that felling cycle is short arbor, shrub and herbaceous plant or their combination.

More preferably, the wherein said vegetal biomass that contains xylogen is selected from the stalk of the gramineous crop of wheat, corn, Chinese sorghum, paddy rice, pulse family, cotton or its combination.

More preferably, the wherein said vegetal biomass that contains xylogen is selected from wood chip or grass bits or its combination after wood chip that the processing of wood working or bamboo produced or bamboo bits, the shrub cutting.

Preferably, wherein said raw coal is selected from the coal of low metamorphic grade coal and/or medium metamorphic grade.Not viscosity and/or the weak viscosity low metamorphic grade coal produced of viscosity and/or weak viscosity low metamorphic grade coal, the especially Inner Mongol not more preferably.

Further preferably, this low metamorphic grade coal is selected from brown coal, long bituminous coal.

Preferably, wherein said raw coal is selected from the low metamorphic grade coal of moderate tack and/or high viscosity and/or the coal of medium metamorphic grade.Moderate tack and/or the high viscosity low metamorphic grade coal produced of the low metamorphic grade coal of moderate tack and/or high viscosity, especially area, Hulun Buir, the Inner Mongol more preferably is as para-bituminous coal or person in middle and old age's brown coal etc.

Preferably, described biomass are the vegetal biomass that contain xylogen, preferentially be selected from draft and/or woody vegetal biomass, it can be the stalk of gramineous crops such as wheat, corn, Chinese sorghum, paddy rice, pulse family and cotton, also can be wood chip after wood working or the bamboo wood chip that produced of processing or bamboo bits, the shrub cutting or grass bits etc., or their mixture.

Preferably, the described vegetal biomass that contains xylogen is selected from the stalk of the gramineous crop of wheat, corn, Chinese sorghum, paddy rice, pulse family, cotton or its combination.

Preferably, the described vegetal biomass that contains xylogen is selected from wood chip or grass bits or its combination after wood chip that the processing of wood working or bamboo produced or bamboo bits, the shrub cutting.

Be preferably the raw coal of 60～85 mass parts and the biomass of 15～40 mass parts, the biomass of the raw coal of 65～80 mass parts and 20～35 mass parts more preferably, more preferably the biomass of the raw coal of 70～80 mass parts and 20～30 mass parts most preferably are the raw coal of 75～80 mass parts and the biomass of 20～25 mass parts.

Preferably, raw coal after the fragmentation and biomass are sized to≤10mm, more preferably, are sized to below the 6mm, further preferably, raw coal after the fragmentation and biomass are sized to below the 3mm.

Preferably, described temperature is between 150～400 ℃, more preferably between 180～280 ℃, or between 160～220 ℃, further preferably between 200～250 ℃, or between 170～210 ℃, further preferably between 210～240 ℃, or between 180～200 ℃, most preferably between 220～230 ℃, or between 190～195 ℃.

Preferably, described soaking time is 10～40min, and forming pressure is 5～20 tons, and more preferably, described soaking time is about 20min, and forming pressure is 10～15 tons.

Preferably, after with the screening of the described raw coal after the fragmentation and biomass, the described raw coal after the fragmentation and biomass are carried out predryingly, make material moisture≤10% of described raw coal and biomass, more preferably≤5%.

Preferably, this fine coal and biomass are warming up to preset temperature, and keep this temperature scheduled time, and utilizing the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then is to carry out under the condition of secluding air.

Preferably, this fine coal and biomass are to be warming up to preset temperature respectively, then this fine coal and biomass are mixed and keep this temperature scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

Preferably, at room temperature this fine coal and biomass are mixed, and the mixture of this fine coal and biomass is warming up to preset temperature together, and keep this temperature scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

Preferably, this fine coal and biomass are to be warming up to preset temperature respectively, wherein the temperature of fine coal is hanged down 10～40 ℃ than the temperature of biomass, wherein the temperature of fine coal is between 150～200 ℃, more preferably between 160～220 ℃, further preferably between 170～210 ℃, again preferably between 180～200 ℃, most preferably between 190～195 ℃; The temperature of biomass is between 180～400 ℃, preferably between 180～280 ℃, further preferably between 200～250 ℃, further preferably between 210～240 ℃, or most preferably between 220～230 ℃.Then this fine coal and biomass are mixed and the insulation scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

Preferably, further comprise other materials that are selected from following group: the mud after the residue of the tankage of coal-tar heavy oil, commercial grease, production of biodiesel process, oil production are handled, loess, sulfur elimination, wilkinite or two or more the mixture in them, mud after preferably including the tankage that are selected from commercial grease, oil production and handling, in the loess one or more, wherein based on the raw coal and the biomass of 100 mass parts, described other materials are 5～25 mass parts.

Preferably, after with the screening of the described raw coal after the fragmentation and biomass, the described raw coal after the fragmentation and biomass are carried out predryingly, make material moisture≤5% of described raw coal and biomass.

Preferably, this fine coal and biomass are to be warming up to preset temperature respectively, and wherein the temperature of fine coal is lower than the temperature of biomass.

The temperature of fine coal is preferably hanged down 10～40 ℃ than the temperature of biomass, wherein the temperature of fine coal is between 150～200 ℃, more preferably between 160～220 ℃, further preferably between 170～210 ℃, again preferably between 180～200 ℃, most preferably between 190～195 ℃; The temperature of biomass is between 180～280 ℃, further preferably between 200～250 ℃, further preferably between 210～240 ℃, or most preferably between 220～230 ℃.Then this fine coal and biomass are mixed and the insulation scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

At the difficult Inner Mongol brown coal of moulding separately; biomass coal of the present invention mainly adopts low temperature to tie up warm technology; to contain vegetal biomass softening even liquefaction under 150～300 ℃ of temperature of xylogen; and impose predetermined pressure; remollescent biomass and adjacent coal particles are gluedd joint mutually; under external force, biomass and coal particles begin to rearrange the position relation, and distortion of generator tool and plastic flow.Therefore, adopt the fuel of this method moulding, can produce high-intensity composite biomass briquettes without any additives, binding agent, certain strength degradation low tooling cost.And, utilize the characteristics that xylogen softens, liquefies in the biomass, can suitably improve hot-forming temperature, the extruding power when helping reducing briquette molding.

Wherein, adopt the type of heating of comparatively high temps more to help softening, the liquefaction of xylogen in the biomass for biomass, adopt the type of heating of lesser temps then more to help saving heat energy for fine coal, but prerequisite is for both should keep that xylogen is in softening or liquefaction in the biomass after mixing, and is beneficial to both extrusion formings.

Simultaneously, for moderate tack and/or high viscosity low metamorphic grade coal such as para-bituminous coal or person in middle and old age's brown coal of moulding separately, utilize the application's biomass coal can effectively utilize local rich produce as stalk of grass or the wood chip the like waste that wood working produced.

The biomass coal of gained of the present invention does not add binding agent, save binding agent preparation, binding agent and fine coal evenly mix pinch, technological process such as biomass coal dry solidification; And the biomass coal intensity height of gained of the present invention, good waterproof performance satisfies the requirement of long-distance transport and outdoor storage.

Brief description of drawings

Fig. 1 a is the synoptic diagram of Production Flow Chart of the biomass coal of a specific embodiment of the present invention;

Fig. 1 b is the synoptic diagram of Production Flow Chart of the biomass coal of another embodiment of the present invention;

Fig. 2 is the side structure synoptic diagram of the roller briquetting machine of a specific embodiment of the present invention;

Fig. 3 is the cross section structure synoptic diagram that the A-A line along Fig. 1 of the roller briquetting machine of a specific embodiment of the present invention intercepts.

Embodiment

The specific embodiment of the present invention below is provided.In the embodiment below, unless otherwise, all umbers and percentage number average are in mass.

In the present invention, under the situation of not contradiction or conflict, all embodiment of the present invention, embodiment and feature can make up mutually.

In a specific embodiment of the present invention, a kind of biomass coal is provided, it can not comprise extra binder free, comprising:

The raw coal of 50～90 mass parts, and

The biomass of 10～50 mass parts, wherein said biomass are selected from: (a) draft section plant, (b) agricultural wastes, (c) forestry biomass, (d) waterplant, and (e) energy-source plant, or their mixture,

Wherein, with the raw coal of 50～90 mass parts and the biomass fragmentation of 10～50 mass parts, and filter out fine coal and the biomass of granularity≤10mm by screening plant, and this fine coal and biomass are warming up to preset temperature, and keep this temperature scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then,, obtain binder free biomass type product of coal the cooling of the moulded coal after the moulding back demoulding.

In a preferred embodiment of the present invention, raw coal after the fragmentation and biomass are filtered out fine coal and the biomass of granularity≤10mm, more preferably, raw coal after the fragmentation and biomass are sized to below the 6mm, further preferably, low rank coal after the fragmentation and biomass are sized to below the 3mm.

In a preferred embodiment of the present invention, wherein said raw coal is a low metamorphic grade coal.At one more in the preferred implementation of the present invention, raw coal is the low metamorphic grade coal that the Inner Mongol produces.

In the present invention further optimization embodiment, this low metamorphic grade coal is selected from brown coal, long bituminous coal.

Employed in the present invention biomass are meant that all except that fossil oil derive from plant energy regenerated material in the organism.Mainly be meant the biomass that derive from by the green plants that comprises xylogen, comprise: (a) draft section plant, as herbage, weeds etc.; (b) agricultural wastes: as stalk, shell, fruit stone, corn cob etc.; (c) forestry biomass: as fuel wood, fallen leaves, bark, tree root and forestry processing waste etc.; (d) waterplant: as reed etc.; And (e) energy-source plant: as grow rapidly, felling cycle short arbor, shrub and herbaceous plant etc.; The perhaps combination of above-mentioned biomass.

In a preferred embodiment of the present invention, described biomass are the vegetal biomass that contain xylogen, preferentially be selected from draft and/or woody vegetal biomass, it can be the stalk of gramineous crops such as wheat, corn, Chinese sorghum, paddy rice, pulse family and cotton, also can be wood chip after wood working or the bamboo wood chip that produced of processing or bamboo bits, the shrub cutting or grass bits etc., or their mixture.

In a preferred embodiment of the present invention, be the raw coal of 60～85 mass parts and the biomass of 15～40 mass parts.

At one more preferably in the embodiment of the present invention, be the raw coal of 65～80 mass parts and the biomass of 20～35 mass parts.

In a further preferred implementation of the present invention, be the raw coal of 70～80 mass parts and the biomass of 20～30 mass parts.

In a most preferred embodiment of the present invention, be the raw coal of 75～80 mass parts and the biomass of 20～25 mass parts.

In a preferred embodiment of the present invention, raw coal after the fragmentation and biomass are sized to below the 6mm.At one more preferably in the embodiment of the present invention, raw coal after the fragmentation and biomass are sized to below the 3mm.

In a preferred embodiment of the present invention, described temperature is between 150～400 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 180～280 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 160～220 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 200～250 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 170～210 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 210～240 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 180～200 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 220～230 ℃.

At one more preferably in the embodiment of the present invention, described temperature is between 190～195 ℃.

In a preferred embodiment of the present invention, described soaking time is 10～30min, and forming pressure is 5～20 tons.

Described soaking time is about 20min more preferably in the embodiment at one of the present invention, and forming pressure is 10～15 tons.

In a preferred embodiment of the present invention, after with the screening of the described raw coal after the fragmentation and biomass, the described raw coal after the fragmentation and biomass are carried out predryingly, make material moisture≤10% of described raw coal and biomass.

In a preferred embodiment of the present invention, after with the screening of the described raw coal after the fragmentation and biomass, the described raw coal after the fragmentation and biomass are carried out predryingly, make material moisture≤5% of described raw coal and biomass.

In a preferred embodiment of the present invention, this fine coal and biomass are warming up to preset temperature, and keep this temperature scheduled time, and utilizing the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then is to carry out under the condition of secluding air.

In a preferred embodiment of the present invention, this fine coal and biomass are to be warming up to preset temperature respectively, then this fine coal and biomass are mixed and keep this temperature scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

In a preferred embodiment of the present invention, at room temperature this fine coal and biomass are mixed, and the mixture of this fine coal and biomass is warming up to preset temperature together, and keep this temperature scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

In a preferred embodiment of the present invention, this fine coal and biomass are to be warming up to preset temperature respectively, wherein the temperature of fine coal is lower than the temperature of biomass, especially the temperature of fine coal is hanged down 10～40 ℃ than the temperature of biomass, wherein the temperature of fine coal is between 150～200 ℃, more preferably between 160～220 ℃, further preferably between 170～210 ℃, again preferably between 180～200 ℃, most preferably between 190～195 ℃; The temperature of biomass is between 180～280 ℃, further preferably between 200～250 ℃, further preferably between 210～240 ℃, or most preferably between 220～230 ℃.Then this fine coal and biomass are mixed and the insulation scheduled time, utilize the extrusion forming under predetermined pressure of pressurizing mould or pressure forming machine then, wherein heat up, insulation and extrusion forming all be to carry out under the condition of secluding air.

At the difficult Inner Mongol brown coal of moulding separately; biomass coal of the present invention mainly adopts low temperature to tie up warm technology; to contain biomass softening even liquefaction under 150～400 ℃ of temperature of xylogen; and impose predetermined pressure; remollescent biomass and adjacent coal particles are gluedd joint mutually; under external force, biomass and coal particles begin to rearrange the position relation, and distortion of generator tool and plastic flow.Therefore, adopt the fuel of this method moulding, can produce high-intensity composite biomass briquettes without any additives, binding agent, certain strength degradation low tooling cost.And, utilize the characteristics that xylogen softens, liquefies in the biomass, can suitably improve hot-forming temperature, the extruding power when helping reducing briquette molding.

Wherein, adopt the type of heating of comparatively high temps more to help softening, the liquefaction of xylogen in the biomass for biomass, and adopt the type of heating of lesser temps more to help saving heat energy for fine coal, should keep the softening or liquefaction of xylogen in the biomass after mixing but prerequisite is for both, be beneficial to both extrusion formings.

In an embodiment, biomass coal of the present invention is produced by following steps: with low rank coal and biomass fragmentation, be sized to below the 3mm; Dry back is according to described mixed mixing; The mixture of fine coal behind the mixing and biomass is heated rapidly to design temperature, is incubated the scheduled time then; With pressurizing mould or shaper extrusion forming, the cooling back demoulding obtains biomass coal at last.

Be elaborated below with reference to the Production Flow Chart of accompanying drawing to biomass coal of the present invention, wherein Fig. 1 is the synoptic diagram of Production Flow Chart of the biomass coal of a preferred embodiment of the present invention.

In a preferred implementation, use following roller briquetting machine moulding (as shown in Figures 2 and 3).

A kind of pair of transmission roller briquetting machine, it comprises: frame 1, drive unit 5, the

pair roller

2,3 that is arranged in frame 1 and is parallel to each other, is arranged side by side, with the transmission mechanism 6 of transmission of power to described

pair roller

2,3, and the feeding machine 4 between the roll gap that is fed into pair roller is compressed fine coal in pressure; Described roller briquetting machine is suitable for above-mentioned fine coal and biomass binder free forming method, push the moulding biomass coal by the rotation of pair roller, wherein, roller 2 in the pair roller or 3 can be radially relatively another roller level move back and forth,

roller

2 or 3 circular surfaces distribution pit, another

roller

3 or 2 circular surfaces are smooth surface, and adopt two to overlap each roller that transmission mechanism 6 (wherein a cover transmission mechanism 6 is not shown) independently drives described

pair roller

2,3 respectively.Wherein, described transmission mechanism 6 can be a speed reduction unit.

The moving roller briquetting machine (as shown in Figures 2 and 3) of another kind of patrilineal line of descent with only one son in each generation, comprise: frame 1, drive unit 5, the

pair roller

2,3, and the feeding machine 4 between the roll gap that is fed into pair roller is compressed fine coal in pressure; Described roller briquetting machine is suitable for above-mentioned fine coal and biomass binder free forming method, rotation by

pair roller

2,3 pushes the moulding moulded coal, wherein, roller 2 in the

pair roller

2,3 or 3 can radially another

roller

3 or 2 levels move back and forth relatively, each roller 2 of described pair roller or 3 the circular surfaces pit that all distributes, and the pit on the circular surfaces of two rollers corresponds to each other, and only adopt each roller of a described

pair roller

2,3 of transmission mechanism 6 synchronized drive, make the moulded coal of shaper compacting for whole spherical.Preferably, in above-mentioned roller briquetting machine, described transmission mechanism 6 is single input dual output type speed reducer.

In above-mentioned two kinds of roller briquetting machines, also comprise torsion supporting device 7, described torsion supporting device 7 is fixedlyed connected with speed reduction unit, and unitary rotation takes place when preventing the speed reduction unit output torque.

Fig. 2 is the side structure synoptic diagram of roller briquetting machine of the present invention; Fig. 3 is the cross section structure synoptic diagram that the A-A line along Fig. 1 of roller briquetting machine of the present invention intercepts.

Description of reference numerals in Fig. 2 and Fig. 3 is as follows:

1: frame

2,3: pair roller

4: feeding machine

5: drive unit

6: transmission mechanism

7: the torsion supporting device

Below with reference to embodiment biomass coal of the present invention and production thereof are specifically described, those skilled in the art should understand that wherein embodiment only is for illustrative purposes, should not be regarded as limiting by any way the scope of the invention defined by the claims.In the following embodiments, unless otherwise, all umbers and percentage number average are in mass.

Embodiment 1:

The vegetal biomass that adopts in the biomass coal raw material is an agricultural crop straw;

The brown coal that raw coal in the biomass coal adopts the Inner Mongol to produce.

Brown coal and biomass are by following massfraction proportioning, that is: brown coal are 80 parts, 20 parts of biomass.Raw meal particle size :≤3mm; Material moisture :≤5%.

Measure the cold pressing strength (being ultimate compression strength) of the biomass coal that obtains according to the measuring method of the industrial shaping coal cold pressing strength of T/T748-1997 regulation, measure the water-repellancy (comprising the multiple dry strength of water-proofing time and/or immersion (N/)) of the biomass coal that obtains according to the method for MT/T749-1997 regulation, measure the thermal value of the biomass coal that obtains according to standard GB/T213-2008.

Fig. 1 a is the synoptic diagram of Production Flow Chart of the biomass coal of this embodiment of the present invention, and its technical process is: (1) sends brown coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) be the cutting machine pulverizing of 3mm with stalk through sieve aperture, dry naturally; (3) by mass percentage 80% brown coal and 20% stalk are stirred; (4) brown coal and stalk material are heated rapidly to 240 ℃ of design temperatures together, constant temperature time 15min, heating and insulating process are to carry out under the condition of secluding air; (5) in pressurizing mould with 15 tons forming pressure extrusion forming, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

With the biomass coal of this formulated, the detected result of products obtained therefrom:

Annotate: 1 ton=10KN.If being converted to the face pressure of moulded coal ball is 1 ton=10MPa.

Embodiment 2:

The vegetal biomass that adopts in the biomass coal raw material is a stalk;

Raw coal in the biomass coal adopts long bituminous coal;

Long bituminous coal and biomass are by following massfraction proportioning, that is: long bituminous coal is 80 parts, 20 parts of biomass.Raw meal particle size :≤3mm; Material moisture :≤5%.

Fig. 1 a is the synoptic diagram of Production Flow Chart of the biomass coal of this embodiment of the present invention, and its technical process: (1) sends long bituminous coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) be the cutting machine pulverizing of 3mm with stalk through sieve aperture, dry naturally; (3) by mass percentage 80% long bituminous coal and 20% stalk are stirred; (4) bituminous coal is heated rapidly to 300 ℃ of design temperatures with the stalk material, constant temperature time 20min, heating and insulating process are to carry out under the condition of secluding air; (5) with 15 tons the two transmission roller briquetting machine extrusion forming of forming pressure in Fig. 2 and Fig. 3, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

With the moulded coal of this formulated, the products obtained therefrom detected result:

Embodiment 3:

The vegetal biomass that adopts in the biomass coal raw material is a wood chip;

The long bituminous coal that raw coal in the biomass coal adopts the Inner Mongol to produce;

Long bituminous coal and biomass are by following massfraction proportioning, that is: long bituminous coal is 75 parts, 25 parts of biomass.Raw meal particle size :≤3mm; Material moisture :≤5%.

Its technical process is shown in Fig. 1 b: (1) sends long bituminous coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) be the cutting machine pulverizing of 3mm with wood chip through sieve aperture, dry naturally; (3) 75% long bituminous coal quickly heats up to 240 ℃ by mass percentage, and 25% wood chip quickly heats up to 280 ℃ of design temperatures by mass percentage simultaneously, and the heat-processed of wherein long bituminous coal and wood chip is to carry out under the condition of secluding air; (4) 75% the long bituminous coal by mass percentage after will heating mixes and stirs with 25% wood chip by mass percentage, and is incubated 20min under this temperature, and the insulating process of wherein long bituminous coal and wood chip is to carry out under the condition of secluding air; (5) with the extrusion forming in as Fig. 2,3 the moving roller briquetting machine mould of patrilineal line of descent with only one son in each generation of 10 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Annotate: 1 ton=10KN; If being converted to the face pressure of moulded coal ball is 1 ton=10MPa.

Embodiment 4:

The vegetal biomass that adopts in the biomass coal raw material is the wood chip after the shrub cutting;

Raw coal in the biomass coal adopts Hulun Buir, the Inner Mongol to produce the para-bituminous coal of moderate tack;

Long bituminous coal and biomass are by following massfraction proportioning, that is: the para-bituminous coal of moderate tack is 85 parts, 15 parts of biomass.Raw meal particle size :≤3mm; Material moisture :≤5%.

Its technical process is shown in Fig. 1 b: (1) sends para-bituminous coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) be the cutting machine pulverizing of 3mm with wood chip through sieve aperture, and predrying; (3) the long bituminous coal with 85 mass parts quickly heats up to 180 ℃, and the wood chip with 15 mass parts quickly heats up to 220 ℃ of design temperatures simultaneously, and the heat-processed of wherein long bituminous coal and wood chip is to carry out under the condition of secluding air; (4) the long bituminous coal of 85 mass parts after will heating mixes with the wood chip of 15 mass parts and stirs, and is incubated 20min under this temperature, and the insulating process of wherein long bituminous coal and wood chip is to carry out under the condition of secluding air; (5) with the extrusion forming in as Fig. 2,3 the moving roller briquetting machine mould of patrilineal line of descent with only one son in each generation of 10 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Embodiment 5:

The vegetal biomass that adopts in the biomass coal raw material is the soybean straw;

Raw coal adopts the Inner Mongol to produce low-viscosity long bituminous coal;

Other materials that mix in the biomass coal are the tankage of commercial grease;

The tankage of long bituminous coal and biomass, commercial grease are by following massfraction proportioning, that is: long bituminous coal is 70 parts, 15 parts of vegetal biomass, 15 parts of the tankage of commercial grease.Raw meal particle size :≤10mm; The moisture of various materials after predrying :=15%.

Its technical process is shown in Fig. 1 b: (1) sends the tankage of long bituminous coal after predrying and commercial grease to coal pulverizer in mass parts for the ratio of 15 parts of the tankage of 70 parts in long bituminous coal and commercial grease, grinds to form particle diameter and be the coal dust intermixture below the 10mm; (2) be the cutting machine pulverizing of 10mm with the soybean straw through sieve aperture, dry naturally; (3) mixture with the tankage of the long bituminous coal of the long bituminous coal of 70 mass parts and 15 mass parts and commercial grease quickly heats up to 200 ℃, soybean stalk bits with 15 mass parts quickly heat up to 240 ℃ of design temperatures simultaneously, and the heat-processed of the mixture of the tankage of wherein long bituminous coal and commercial grease and soybean stalk bits is to carry out under the condition of secluding air; (4) tankage of the commercial grease of the long bituminous coal of 85 mass parts after will heating and 15 mass parts mix with the soybean stalk bits of 15 mass parts and stir; (5) with the extrusion forming in as Fig. 2,3 the moving roller briquetting machine mould of patrilineal line of descent with only one son in each generation of 15 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Embodiment 6:

The vegetal biomass that adopts in the biomass coal raw material is a broomcorn straw;

Raw coal adopts the Inner Mongol to produce low-viscosity long bituminous coal;

Other materials that mix in the biomass coal are the mud after oil production is handled;

Mud after long bituminous coal and biomass, oil production are handled is by following massfraction proportioning, that is: long bituminous coal is 80 parts, 15 parts of biomass, 5 parts in the mud after oil production is handled.Raw meal particle size :≤6mm; The moisture of various materials after predrying :=10%.

Its technical process is shown in Fig. 1 b: the mud after (1) handles the long bituminous coal in predrying back and oil production is sent coal pulverizer in the ratio of 5 parts in the mud of mass parts after for 80 parts in long bituminous coal and oil production processing, grinds to form particle diameter and be the coal dust intermixture below the 6mm; (2) be the cutting machine pulverizing of 6mm with the Chinese sorghum straw through sieve aperture, dry naturally; (3) will be by mass percentage 85% long bituminous coal and the mixture of the mud after the oil production processing quickly heat up to 180 ℃, 15% broomcorn straw bits quickly heat up to 200 ℃ of design temperatures by mass percentage simultaneously, and the heat-processed of the mixture of the mud after wherein long bituminous coal and oil production are handled and broomcorn straw bits is to carry out under the condition of secluding air; (4) mixture of the long bituminous coal of 85 mass parts after will heating and mud after oil production is handled and the broomcorn straw of 15 mass parts are considered to be worth doing and are mixed and stir; (5) with the extrusion forming in as Fig. 2, two transmission roller briquetting machine moulds of 3 of 12 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Embodiment 7:

The vegetal biomass that adopts in the biomass coal raw material is forestry processing wastes such as fuel wood, bark, tree root;

The low-viscosity long bituminous coal that raw coal adopts Inner Mongol Bao Rixile to produce;

Long bituminous coal and biomass are by following massfraction proportioning, that is: long bituminous coal is 80 parts, 20 parts of biomass.Raw meal particle size :≤3mm; The moisture of various materials after predrying :=5%.

Its technical process is shown in Fig. 1 b: (1) sends the long bituminous coal in predrying back to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm; (2) be the cutting machine pulverizing of 3mm with forestry processing wastes such as fuel wood, bark, tree roots through sieve aperture, and predrying; (3) the long bituminous coal with 80 mass parts quickly heats up to 180 ℃, simultaneously forestry processing wastes such as the fuel wood of 20 mass parts, bark, tree root bits are quickly heated up to 200 ℃ of design temperatures, the heat-processed that wherein long bituminous coal and forestry processing waste are considered to be worth doing is to carry out under the condition of secluding air; (4) the long bituminous coal of 80 mass parts after will heating mixes with the forestry processing waste bits of 20 mass parts and stirs; (5) with the extrusion forming in as Fig. 2, two transmission roller briquetting machine moulds of 3 of 15 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Embodiment 8:

The vegetal biomass that adopts in the biomass coal raw material be pine nut shell and/or hazelnut shell etc. etc. the fruit processing waste;

The low-viscosity long bituminous coal that raw coal adopts Inner Mongol Huo Linhe to produce;

Long bituminous coal and biomass are by following massfraction proportioning, that is: long bituminous coal is 60 parts, 40 parts of biomass.Raw meal particle size :≤3mm; The moisture of various materials after predrying :=5%.

Its technical process is shown in Fig. 1 b: (1) sends the long bituminous coal after predrying to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm; (2) be the cutting machine pulverizing of 3mm with fruit processing wastes such as pine nut shell and/or hazelnut shell through sieve aperture, and predrying; (3) the long bituminous coal with 60 mass parts quickly heats up to 200 ℃, simultaneously fruit processing wastes such as the pine nut shell of 40 mass parts and/or hazelnut shell bits are quickly heated up to 240 ℃ of design temperatures, the heat-processed that fruit processing wastes such as wherein long bituminous coal and pine nut shell and/or hazelnut shell are considered to be worth doing is to carry out under the condition of secluding air; (4) the long bituminous coal of 60 mass parts after will heating and 40 mass parts mixes with fruit processing wastes bits such as pine nut shell and/or hazelnut shell and stirs; (5) with the extrusion forming in as Fig. 2,3 the moving roller briquetting machine mould of patrilineal line of descent with only one son in each generation of 12 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains biomass coal.

Comparative example 1:

Be shaped under identical pressure for the brown coal utilization that is unsuitable for carrying out the independent moulding of fine coal binder free of above-mentioned use and embodiment 1 identical mould, obtain moulded coal sample 1.

Its technical process is: (1) sends brown coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) brown coal are heated rapidly to 240 ℃ of design temperatures, constant temperature time 30min, heating and insulating process are to carry out under the condition of secluding air; (3) in pressurizing mould with 15 tons forming pressure extrusion forming, extrusion forming also is to carry out under the condition of secluding air; (6) cool; (7) demoulding obtains moulded coal sample 1.

With the moulded coal sample 1 of this comparative example preparation, the detected result of products obtained therefrom:

Comparative example 2:

2 identical two transmission roller briquetting machine extrusion formings are shaped under identical pressure for the long bituminous coal utilization that is unsuitable for carrying out the independent moulding of fine coal binder free of above-mentioned use and embodiment, obtain moulded coal sample 2.

Its technical process: (1) sends long bituminous coal to coal pulverizer, and grinding to form particle diameter is the following coal dust of 3mm, and oven dry; (2) the long bituminous coal after will grinding quickly heats up to 240 ℃, and is incubated 20min under this temperature, and wherein the heating of long bituminous coal and insulating process are to carry out under the condition of secluding air; (3) with the extrusion forming in as Fig. 2, two transmission roller briquetting machine moulds of 3 of 15 tons forming pressure, extrusion forming also is to carry out under the condition of secluding air; (4) cool; (5) demoulding obtains moulded coal sample 2.

With the moulded coal sample 2 of this comparative example preparation, the detected result of products obtained therefrom:

The biomass coal that is obtained according to the present invention as can be known by above-mentioned detected result is compared with the moulded coal that the brown coal or the long bituminous coal of independent shaping obtain and is had the following advantages:

Realize fine coal, particularly be unsuitable for the moulded coal manufacturing of the low-disintegration coal of shaping separately, satisfied transportation and industrial application requirement;

The fuel value of the biomass coal that obtains is higher than the moulded coal of low-disintegration coal of independent shaping or suitable with it, therefore, has effectively utilized the value of the biomass that the producing coal area produces, and has saved the consumption of raw coal.

In this biomass coal, need not to add binding agent, save binding agent preparation, binding agent and fine coal evenly mix pinch, technological process such as green briquette dry solidification; Can serve as the material of binding agent if add suitable other, the mud after handling as tankage, the residue of production of biodiesel process, the oil production of coal-tar heavy oil, commercial grease, loess, sulfur elimination, wilkinite or two or more the mixture in them also can make the fine moulding of biomass coal; The industrial waste that can effectively utilize other industry to produce;

The biomass of renewable energy source have been made full use of, not only provide possible effective way for the utilization of biomass energy heavy industrialization, open up energy frontier, rationally utilized the energy efficiently, and a kind of extremely vital novel energy---the biomass coal that has been born.Biomass coal is as novel energy, be alleviating energy crisis, efficiently utilize renewable energy source, protection environment, solve the insufficient effective way of traditional industry moulded coal combustionproperty.

Although various embodiment of the present invention is described in context by embodiment, the present invention is not limited to this.Therefore, it is the restriction of the scope of the invention that above description should be used as, and scope of the present invention is limited by appended claim.It will be appreciated by those skilled in the art that under the situation that does not deviate from spirit of the present invention and can make various changes and change to the present invention, it all will fall within protection scope of the present invention.

Claims

1. biomass coal comprises or is made up of following:

The raw coal of 50～90 mass parts, and

Wherein, with the raw coal of described 50～90 mass parts and the biomass fragmentation of described 10～50 mass parts, and filter out the fine coal and the biomass of predetermined particle size by screening plant, and described fine coal and biomass are proportionally heated up respectively or be warming up to preset temperature together, and keep this temperature scheduled time, utilize then pressurizing mould or pressure forming machine under predetermined pressure with described fine coal and described biomass extrusion forming, with the cooling of the moulded coal after the moulding back demoulding, obtain described biomass type product of coal.

2. biomass coal according to claim 1, wherein said biomass are the vegetal biomass that contain xylogen, be selected from herbage, weeds, stalk, shell, fruit stone, corn cob, fuel wood, fallen leaves, bark, tree root and forestry processing waste, reed, pasture and water, grow rapid, that felling cycle is short arbor, shrub and herbaceous plant or their combination.

3. biomass coal according to claim 1, the wherein said vegetal biomass that contains xylogen is selected from the stalk of the gramineous crop of wheat, corn, Chinese sorghum, paddy rice, pulse family, cotton or its combination.

4. biomass coal according to claim 1, the wherein said vegetal biomass that contains xylogen are selected from wood chip or grass bits or its combination after wood chip that the processing of wood working or bamboo produced or bamboo bits, the shrub cutting.

5. according to each described biomass coal in the claim 1～4, wherein be the raw coal of 60～85 mass parts and the biomass of 15～40 mass parts, the biomass of the raw coal of 65～80 mass parts and 20～35 mass parts more preferably, more preferably the biomass of the raw coal of 70～80 mass parts and 20～30 mass parts most preferably are the raw coal of 75～80 mass parts and the biomass of 20～25 mass parts.

6. according to each described biomass coal in the claim 1～4, wherein described raw coal after the fragmentation and described biomass are sized to granularity≤10mm, preferably be sized to below the 6mm, more preferably described raw coal after the fragmentation and described biomass be sized to below the 3mm.

7. according to each described biomass coal in the claim 1～4, wherein said temperature is between 150～400 ℃, more preferably between 180～280 ℃, or between 160～220 ℃, further preferably between 200～250 ℃, or between 170～210 ℃, further preferably between 210～240 ℃, or between 180～200 ℃, most preferably between 220～230 ℃, or between 190～195 ℃; Described soaking time is 10～40min, and forming pressure is 5～20 tons, and more preferably described soaking time is about 20min, and forming pressure is 10～15 tons.

8. according to each described biomass coal in the claim 1～4, further comprise other materials that are selected from following group: the mud after the residue of the tankage of coal-tar heavy oil, commercial grease, production of biodiesel process, oil production are handled, loess, sulfur elimination, wilkinite or two or more the mixture in them, mud after preferably including the tankage that are selected from commercial grease, oil production and handling, in the loess one or more, wherein based on the raw coal and the biomass of 100 mass parts, described other materials are 5～25 mass parts.

9. according to each described biomass coal in the claim 1～4, wherein said raw coal is selected from the coal of low metamorphic grade coal and/or medium metamorphic grade, more preferably not viscosity and/or weak viscosity low metamorphic grade coal, especially not viscosity and/or the weak viscosity low metamorphic grade coal produced of the Inner Mongol, further preferred this low metamorphic grade coal is selected from brown coal, long bituminous coal.

10. according to each described biomass coal in the claim 1～4, wherein said raw coal is selected from the low metamorphic grade coal of moderate tack and/or high viscosity and/or the coal of medium metamorphic grade, moderate tack and/or high viscosity low metamorphic grade coal such as para-bituminous coal or the person in middle and old age's brown coal produced of the low metamorphic grade coal of moderate tack and/or high viscosity, especially area, Hulun Buir, the Inner Mongol more preferably.