CN103756746A - Preparation method of mobile straw granular fuel - Google Patents
Preparation method of mobile straw granular fuel Download PDFInfo
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- CN103756746A CN103756746A CN201410002669.4A CN201410002669A CN103756746A CN 103756746 A CN103756746 A CN 103756746A CN 201410002669 A CN201410002669 A CN 201410002669A CN 103756746 A CN103756746 A CN 103756746A
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- dehydration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention provides a preparation method of a mobile straw granular fuel. The method comprises the following steps: (1) a step of stacking and primarily dehydrating straws, namely stacking the straws, wherein the single stack is 500-3000 tons, and naturally dehydrating to the water content within 35%; (2) a step of coarsely crushing and secondarily dehydrating, namely crushing the primarily dehydrated straws by a mobile full-suction crusher, conveying the lumpiness to a waterproof and dustproof secondary dehydrating cabin by an air flow, and naturally dehydrating to the water content within 25%, wherein the crushing lumpiness are less than 1 cm; (3) a step of secondarily crushing, namely crushing the secondarily dehydrated raw material by a mobile stationary and fixed cutter combined rotor type crusher, wherein the material discharged is conveyed by the air flow and the granularity of the material is less than 2mm; and (4) a moulding step, namely directly feeding the secondarily crushed raw material to a mobile ring flat die moulding machine to be moulded, wherein the moulding particle size range is 20-30mm, and the bulk specific weight of the finished product is over 1000kg/cubic meters.
Description
[technical field]
The present invention relates to biomass energy applied technical field, or rather, relate to a kind of preparation method of mobile straw particle fuel.
[background technology]
Not only aboundresources, preservable renewable energy source of biomass, reduces in addition greenhouse gas emission, increases the fixing effect of soil carbon, as one of new forms of energy, is put in national strategy new industry development program.According to Ministry of Agriculture's development in science and technology center enquiry data: can develop biomass energy total amount to the year two thousand twenty China is 5.4 hundred million tons of standard coals, wherein 1.9 hundred million tons of standard coals of stalk and agricultural machining residuum, account for 35.2% of total amount, stalk high-efficiency comprehensive utilization be the important component part of national biomass energy exploitation, so " collection storaging and transport technology and the equipment of stalk " has been put into < < national energy science and technology " 12 " planning (2011-2015) > >.Take stalk as main biomass resource, be a kind of energy depot, build this industry, will form a kind of economy, i.e. " traw economy " or " agricultural-forestry biomass economy ", this is a brand-new field, is a new milestone in China's agricultural development history.The development of " agricultural-forestry biomass economy " on the one hand can be by current agricultural wastes resource utilization, thereby for peasant has opened up a reliable and stable channel that increases income, simultaneously, Biomass Industry development also can be for peasant provides a large amount of jobs, and these jobs relate to the links such as the collection, transportation, processing, sale of stalk.Therefore it will make major contribution for solving agriculture, rural areas and farmers problem.Current stalk comprehensive utilization considers that from processing power and economy angle generating utilization is optimal path, therefore Electricity Generation by Crop Straws development rapidly, the developing goal proposing according to national Eleventh Five-Year Plan outline, will build 5,500,000 kilowatts of installed capacitys of biomass power generation future.The < < renewable energy source Long-and Medium-term Development planning > > that country has announced simultaneously also determines the developing goal of 3,000 ten thousand kilowatts of the year two thousand twenty biomass power generation installations.Existing straw power generation device raw material supply wretched insufficiency, the design and operation time is 5500-6000 hour/year, actual run time only 3000-4000 hour/year.The sustainable supply of raw material has become the main limiting factor of this industry development.
Refer to shown in Fig. 1, existing stalk fuel processing process generally includes following steps: collect in stalk field, stalk is piled little buttress dehydration, the steps such as the dehydration of large buttress, de-stacking, coarse breaking, fine crushing, compression moulding and cooling storage are piled in stalk transhipment.But there is following defect in existing complete processing: (1) for realizing moulding moisture and the requirement of material physical property, and the stacking of stalk, temporary time of technique are long, and the unit's of causing production capacity working (finishing) area is larger, has restricted working ability and the addressing of fuel factory; (2) due to larger secondary material transhipment amount, stalk bulk density is low in addition, approximately 170 kilograms per cubic meter in bulk, and compression bundling approximately 300 kilograms per cubic meter, so the logistics of causing and venue cost are higher, have restricted the development of technology; (3) due to addressing and logistics reason, factory's module output is lower, causes fuel factory can ability to accept little, and a factory is difficult to realize more than 50,000 tons scale production, and its investment is inversely proportional to output, has restricted the development of project.
[summary of the invention]
The technical problem that the present invention solves is to overcome the defect that prior art exists, and provides that a kind of production cost is low, the level of resources utilization is high and the preparation method of the mobile straw particle fuel that unit production capacity working (finishing) area is little.
The present invention is achieved by the following technical solutions: a kind of preparation method of mobile straw particle fuel, comprise the steps, (1) straw stacks and primary dewatering step: stalk is carried out to stacking, single buttress reserves 500-3000 ton, natural-dehydration to water ratio in 35%; (2) coarse breaking and second dehydration step: portable the straw utilization after the primary dewatering full crusher that sucks is carried out to fragmentation, its breaking size is less than 1 centimetre, and by gas delivery to waterproof, dustproof second dehydration storehouse, natural-dehydration to water ratio in 25%; (3) secondary breaking step: adopt portable moving stationary knife to pulverize in conjunction with rotor-type pulverizer the raw material obtaining after second dehydration, its discharging adopts gas delivery, and its granularity is less than 2 millimeters; (4) forming step: the raw material after secondary breaking is directly sent into Mobile annular flat die forming machine and carry out moulding, moulding particle size range is 20 millimeters～30 millimeters, more than finished product bulk density 1000 kilograms per cubic meter.
Further, in described (2) step, while the raw material after coarse breaking being delivered to second dehydration storehouse with air-flow, adopt single storehouse to carry or many storehouses conveying in parallel.
Further, single warehouse in described second dehydration storehouse is long-pending is no more than 120 cubic metres.
Further, in described second dehydration storehouse, bed of material ulking thickness scope is 4 meters～5 meters.
Further, described second dehydration storehouse adopts the building scaffold steel pipe that can realize mobile utilization to build.
Compared with prior art, the present invention has realized the original position processing of stalk on the one hand by the pattern of transhipment processing units, significantly lowered cost of wheeling, on the other hand, because the seasonality of straw collecting is strong, by rational flow arrangement, can realize " a set of equipment, the general layout of the multiple raw material points of radiation ", reduce equipment vacancy rate, reduce cost of investment, promoted the efficiency of the utilization of resources; Simultaneously by making full use of " in body, free-water evaporation is by the time; the evaporation of Cell binding water is by the characteristic of specific surface area " of stalk dehydration, after having designed stacking dehydration and fragmentation, two kinds of forms of dehydration are accelerated moisture evaporation, improve dewatering efficiency, reduce floor space, the working (finishing) area of unit production capacity has obtained effective reduction.In addition, in the present invention, second dehydration storehouse adopts the building scaffold steel pipe that can realize mobile utilization to build, and has also promoted the utilization ratio of resource.
[accompanying drawing explanation]
Fig. 1 is stalk fuel processing process figure in prior art.
Fig. 2 is schematic flow sheet of the present invention.
[embodiment]
Refer to shown in Fig. 2, the preparation method of a kind of mobile straw particle fuel of the present invention comprises (1) straw stacks and primary dewatering step, (2) coarse breaking and second dehydration step, (3) secondary breaking step, (4) forming step and (5) cooling storing step.
(1) straw stacks and primary dewatering step
In this step, stalk is carried out to stacking, single buttress reserves 500-3000 ton, natural-dehydration to water ratio in 35%; The present invention to adapt to most economical logistics and cost condition as basis, does not emphasize the large buttress of field airing and heap to straw collecting; Relatively little stacking amount can be accelerated the interior free evaporation of water of stalk body, is adapted to various moisture stalks and receives, and piles logistics cost and the land seizure of large buttress after the little buttress dehydration of minimizing heap again.
(2) coarse breaking and second dehydration step
In this step, portable the straw utilization after primary dewatering in (1) the full crusher that sucks is carried out to fragmentation, its breaking size is less than 1 centimetre, and by gas delivery to waterproof, dustproof second dehydration storehouse, natural-dehydration to water ratio in 25%; While the raw material after coarse breaking being delivered to second dehydration storehouse with air-flow, can adopt single storehouse to carry, also can adopt many storehouses in parallel to carry; Preferably, in described second dehydration storehouse, bed of material ulking thickness scope is 4 meters～5 meters; Preferably, single warehouse in described second dehydration storehouse is long-pending is no more than 120 cubic metres; Preferably, described second dehydration storehouse adopts the building scaffold steel pipe that can realize mobile utilization to build; After coarse breaking, the broken joint rate of stalk is 100%, and breaking size is less than 1 centimetre, have great evaporation area, its specific surface area is the more than 100 times of original stalk, owing to adopting air conveying accumulation, voidage is high, and after stacking, its moisture can reach below 25%, and dewatering time reduces more than 50%.
(3) secondary breaking step
In this step, adopt portable moving stationary knife to pulverize in conjunction with rotor-type pulverizer the raw material obtaining after second dehydration in (2), its discharging adopts gas delivery, and its granularity is less than 2 millimeters.
(4) forming step
In this step, the raw material after secondary breaking in (3) directly to be sent into Mobile annular flat die forming machine and carry out moulding, moulding particle size range is 20 millimeters～30 millimeters, more than finished product bulk density 1000 kilograms per cubic meter.
(5) cooling storing step
In this step, the granular fuel after moulding in (4) is carried out cooling and stored.
More than describing is only embodiments of the invention, forgives and can understand, and is not departing under the prerequisite of the present invention's design, within all should being included in technical conceive of the present invention to simple modification of the present invention and replacement.
Claims (5)
1. a preparation method for mobile straw particle fuel, is characterized in that, comprises the steps:
(1) straw stacks and primary dewatering step
Stalk is carried out to stacking, single buttress reserves 500-3000 ton, natural-dehydration to water ratio in 35%;
(2) coarse breaking and second dehydration step
Portable straw utilization after the primary dewatering full crusher that sucks is carried out to fragmentation, and its breaking size is less than 1 centimetre, and by gas delivery to waterproof, dustproof second dehydration storehouse, natural-dehydration to water ratio in 25%;
(3) secondary breaking step
Adopt portable moving stationary knife to pulverize in conjunction with rotor-type pulverizer the raw material obtaining after second dehydration, its discharging adopts gas delivery, and its granularity is less than 2 millimeters;
(4) forming step
Raw material after secondary breaking is directly sent into Mobile annular flat die forming machine and carry out moulding, moulding particle size range is 20 millimeters～30 millimeters, more than finished product bulk density 1000 kilograms per cubic meter.
2. the preparation method of mobile straw particle fuel as claimed in claim 1, is characterized in that: in described (2) step, adopt single storehouse to carry or many storehouses conveying in parallel while the raw material after coarse breaking being delivered to second dehydration storehouse with air-flow.
3. the preparation method of mobile straw particle fuel as claimed in claim 1, is characterized in that: single warehouse in described second dehydration storehouse amasss and is no more than 120 cubic metres.
4. the preparation method of mobile straw particle fuel as claimed in claim 1, is characterized in that: in described second dehydration storehouse, bed of material ulking thickness scope is 4 meters～5 meters.
5. the preparation method of mobile straw particle fuel as claimed in claim 1, is characterized in that: described second dehydration storehouse adopts the building scaffold steel pipe that can realize mobile utilization to build.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002669.4A CN103756746B (en) | 2014-01-03 | 2014-01-03 | Preparation method of mobile straw granular fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002669.4A CN103756746B (en) | 2014-01-03 | 2014-01-03 | Preparation method of mobile straw granular fuel |
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| CN103756746A true CN103756746A (en) | 2014-04-30 |
| CN103756746B CN103756746B (en) | 2015-07-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449931A (en) * | 2014-10-10 | 2015-03-25 | 苏州新协力环保科技有限公司 | Preparation method of biomass fuel |
| CN108531395A (en) * | 2018-07-11 | 2018-09-14 | 上海环境工程设计研究院有限公司 | A kind of small-sized livestock and poultry feces processing integrated apparatus |
| CN108676712A (en) * | 2018-08-07 | 2018-10-19 | 上海环境工程设计研究院有限公司 | A kind of anaerobic fermentation gas stirring device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550373A (en) * | 2009-05-13 | 2009-10-07 | 黑龙江华瑞生物能源技术有限公司 | Method for preparing biomass massive industrial fuel |
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2014
- 2014-01-03 CN CN201410002669.4A patent/CN103756746B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550373A (en) * | 2009-05-13 | 2009-10-07 | 黑龙江华瑞生物能源技术有限公司 | Method for preparing biomass massive industrial fuel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449931A (en) * | 2014-10-10 | 2015-03-25 | 苏州新协力环保科技有限公司 | Preparation method of biomass fuel |
| CN108531395A (en) * | 2018-07-11 | 2018-09-14 | 上海环境工程设计研究院有限公司 | A kind of small-sized livestock and poultry feces processing integrated apparatus |
| CN108676712A (en) * | 2018-08-07 | 2018-10-19 | 上海环境工程设计研究院有限公司 | A kind of anaerobic fermentation gas stirring device |
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| Publication number | Publication date |
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| CN103756746B (en) | 2015-07-08 |
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