CN1644362A - Coal briquette moulding apparatus - Google Patents
Coal briquette moulding apparatus Download PDFInfo
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- CN1644362A CN1644362A CNA2005100026360A CN200510002636A CN1644362A CN 1644362 A CN1644362 A CN 1644362A CN A2005100026360 A CNA2005100026360 A CN A2005100026360A CN 200510002636 A CN200510002636 A CN 200510002636A CN 1644362 A CN1644362 A CN 1644362A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/005—Control arrangements
- B30B11/006—Control arrangements for roller presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
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Abstract
A briquettes shaping machine and method is disclosed. Said method includes such steps as dry coal dressing for removing sulfur from coal, proportionally mixing the powdered desulfurizing agent with powdered coal, proportionally adding the high-molecular vegetative powder, stirring, and die pressing for shaping.
Description
Technical field
The mixture compression forming that the present invention relates to coal dust and plant family macromolecule organic matter powder is the make-up machine of coal briquette.
Background technology
This class manufacture method in the past, be in the coal of 100 parts of weight of flammable sulphur more than containing 1.0% weight (moisture-free basis), the cellulosic biological powder raw material that adds 15～45% weight fits in mixture with an amount of (as 15～19% weight) white lime, after high-pressure molding is the coal briquette shape, to the molding, granulating weight ratio is paraffin: the solution of A heavy oil=1: 9～5: 5 scope carries out surface treatment and makes shaped fuel, and this method is disclosed in the Japanese documentation (special fair 7-68530 number).
Have and coal, the same good combustion characteristics of culled wood shaped fuel in the past with the shaped fuel of this method manufacturing, when the raw material mixed-forming, also needn't heat, and have a water resisting property simultaneously.In addition,, make oxysulfide significantly lower owing in coal dust, be furnished with biomass material and white lime, thereby even the high coal of sulfur content also can use.
A kind of coal briquetting machine is disclosed in the Japanese documentation (spy opens flat 11-123598 number), this device is provided with rotatable feeding screw at opening in the feed appliance of a pair of rotary roller, in the feed appliance bottom along roll mandrel to being provided with the adjustable plate of eating input that can adjust coal dust between rotary roller.A bearing in a pair roller of this briquetting press is supported by oil gear, makes when pressure surpasses setting that this roll is drawn back.
In the briquetting press of said structure, because the constricted zone (feed appliance bottom) at roll is provided with adjustable plate, so just can eat in the middle of the roll into and the corresponding to coal dust of coal briquette volume, prevent that coal briquette from bearing unnecessary pressure, make it can be at only forming under the pressure.
In the shaped fuel manufacture method, coal dust is to mix simultaneously with cellulosic biological powder and white lime shown in the fair 7-68530 communique of above-mentioned spy.Therefore, coal dust contacts with white lime, and coal dust is coated by white lime.The cellulosic biological powder also contacts with white lime simultaneously, and the cellulosic biological powder is coated by white lime.Its result reduces as the white lime of desulfurizing agent powder and the contact rate of coal dust, and the situation that the white lime utilization rate is not high can occur.
Have again, above-mentioned spy opens that there is such problem in briquetting press shown in the flat 11-123598 communique, promptly when adjustable plate wearing and tearing or because coal dust is eaten the effect of entrance pressure power when adjustable plate is out of shape, if this distortion is obvious, then adjustable plate not only can hinder the moulding of coal briquette, when changing adjustable plate, not only will take off the feed appliance helical element simultaneously, and feed appliance itself has to also take off.
Summary of the invention
The 1st purpose of the present invention is to provide a kind of can remove most of sulphur in the coal dust through dry type coal separation method, and can reduce the manufacture method and the make-up machine thereof of the coal briquette of desulfurizing agent powder addition.
The 2nd purpose of the present invention is to provide a kind of does not contact plant family macromolecule organic matter powder and plant family macromolecule organic matter powder is not desulfurized the agent powder and coats with the desulfurizing agent powder, thereby can effectively utilize the manufacture method and the make-up machine thereof of the coal briquette of desulfurizing agent powder.
The 3rd purpose of the present invention is to provide a kind of manufacture method and make-up machine thereof of the coal briquette that can effectively utilize as the jointing material of coal dust with class trade wastes such as plant fibrid (as corrugation paperboard or construction waste etc.).
Even the 4th purpose of the present invention is to provide the wearing and tearing of a kind of decompression helical member also can not hinder the moulding of coal briquette, and the make-up machine of the coal briquette that can increase work efficiency when changing the decompression helical member.
The 5th purpose of the present invention is to provide a kind of feeding screw that makes that the pressure of pushing that the 2nd mixture produces is always remained on appropriate value, thereby can make the make-up machine of the coal briquette of high-quality coal briquette continuously.
The 6th purpose of the present invention be to provide a kind of make in the 1st or the 2nd mixture contained air can be rapidly from moulding with discharging the funnel, and the 2nd contained mixture can be collected foldback and returns egg-type coal briquetting machine in the 2nd mixer in the air of this discharge.
According to the manufacture method of a kind of coal briquette of the present invention of record in the technical scheme 1, as shown in Figures 1 and 2, comprise with moisture content being that institute's sulfur-bearing separates the operation of removing by the dielectric partition method of dry type coal separation in the coal dust 12 of 2～15% weight;
The desulfurizing agent powder that mixes 1～2 weight equivalent that is equivalent to these coal dust 12 contained flammable sulphur in above-mentioned coal dust 12 is to be modulated into the operation of the 1st mixture;
The caloric value of in above-mentioned the 1st mixture, mixing 5～45% weight more than 3000 kcal/kg, moisture content is the plant family macromolecule organic matter powder 16 of 2～20% weight, to be modulated into the operation of the 2nd mixture 32;
Above-mentioned the 2nd mixture 32 with the authorized pressure compression forming, is made the operation of coal briquette 11.
In the manufacture method of the coal briquette of this technical scheme 1 record, dielectric partition method by dry dry type coal separation, even the dry coal dust of crossing 12 passes through in the electric field of high voltage and weak current formation, thereby the big portion of institute's sulfur-bearing in the coal dust 12 and ash separation are removed.After in the coal dust 12a of this separation most of sulphur of removal and ash content, adding desulfurizing agent powder 14 and mixing, add cellulosic plant family macromolecule organic matter powder 16 mixing again.Like this, the first, coal dust 12a preferentially contacts with desulfurizing agent powder 14 and coal dust 12a preferentially is desulfurized 14 coatings of agent powder.The second, plant family macromolecule organic matter powder 16 contacts with desulfurizing agent powder 14 hardly and plant family macromolecule organic matter powder 16 is desulfurized 14 coatings of agent powder hardly.Its result, the addition of desulfurizing agent powder 14 can lower, and desulfurizing agent powder 14 can effectively utilize.Have again, because coal dust 12a preferentially contacts with desulfurizing agent powder 14 and coal dust 12a preferentially is desulfurized 14 coatings of agent powder, remaining sulphur and 14 reactions of desulfurizing agent powder among the coal dust 12a in coal briquette 11 combustion processes, remain in the ashes thereby make sulphur just become gypsum etc., so the generating capacity of SOx lowers.
In addition, " 1 weight equivalent " mentioned in the combined amount of desulfurizing agent powder 14 is meant the flammable sulphur corresponding to contained 1 part of weight in the coal dust, can make the theoretical necessary value of the required desulfurizing agent powder of this sulphur immobilized reactant during burning, the combined amount of required desulfurizing agent powder needs more than 1 weight equivalent in the reality.
The manufacture method of the coal briquette of the present invention of record is as technical scheme 1 described method in the technical scheme 2, it is characterized in that plant family macromolecule organic matter powder is to be selected from the agricultural industrial waste, not utilize the powder that is ground into average grain diameter 1～5mm more than a kind or a kind in plant and the vegetative fiber.
According to the manufacture method of the coal briquette of record in this technical scheme 2, agricultural industrial waste, the jointing material that does not utilize plant or vegetative fiber class trade waste (waste products such as corrugation paperboard or construction waste) etc. to can be used as coal dust effectively utilize.
The make-up machine of a kind of coal briquette of the present invention of record in the technical scheme 3 as Fig. 1, Fig. 2 and shown in Figure 3, has to separate by the dielectric partition method of dry type coal separation and removes the dry type coal separation device 13 that moisture content is sulphur contained in the coal dust 12 of 2～15% weight;
The desulfurizing agent powder 14 that mixes 1～2 weight equivalent that is equivalent to these coal dust 12 contained flammable sulphur in coal dust 12 is to be modulated into the 1st mixer 21 of the 1st mixture;
The caloric value of in the 1st mixture, mixing 5～45% weight more than 3000 kcal/kg, moisture content is the plant family macromolecule organic matter powder 16 of 2～20% weight, to be modulated into the 2nd mixer 22 of the 2nd mixture 32;
Store the moulding funnel 17 of the 2nd mixture 32;
Be arranged on moulding revolvably with in the funnel 17, moulding used the feeding screw 18 of funnel 17 below force feeds with the 2nd mixture 32 in the funnel 17 to moulding;
Be arranged on moulding with funnel 17 belows, its outer peripheral face forms and is arranged with the rotation inversely mutually under crimped status mutually of most recessed 23b, 24b and its outer peripheral face, with a pair roller 23,24 of the 2nd mixture 32 compression formings of feeding screw 18 force feeds.
In the make-up machine of the coal briquette of these technical scheme 3 records, use dry dry type coal separation device 13, the dry coal dust of crossing 12 of order passes through in the electric field of high voltage and weak current formation, thereby the big portion of sulphur contained in the coal dust 12 and ash separation are removed.This separation removed among the coal dust 12a of most of sulphur and ash content add desulfurizing agent powder 14 by the 1st mixer 21 and mix after, in this 1st mixture, add cellulosic plant family macromolecule organic matter powder 16 again and mix by the 2nd mixer 22.Like this, the first, coal dust 12a preferentially contacts with desulfurizing agent powder 14 and coal dust 12a preferentially is desulfurized 14 coatings of agent powder.The second, plant family macromolecule organic matter powder 16 contacts with desulfurizing agent powder 14 hardly and plant family macromolecule organic matter powder 16 is desulfurized 14 coatings of agent powder hardly.Its result, when the addition of desulfurizing agent powder 14 lowered, desulfurizing agent powder 14 can effectively utilize.
The make-up machine of the coal briquette of the present invention of record is as technical scheme 3 described devices in the technical scheme 4, as Fig. 2 and Fig. 3 further shown in, it is characterized in that, the front end of feeding screw 18 is provided with decompression helical member 52 towards a pair roller 23,24 pressure contact portion places, the torsional direction of the blade 52a of this decompression helical member 52 is arranged to opposite with the torsional direction of the blade 18a of feeding screw 18.
In the egg-type coal briquetting machine of putting down in writing in this technical scheme 4 of the present invention, when moulding is pushed the 2nd mixture 32 between a pair roller 23,24 with 18 rotations of the feeding screw in the funnel 17, decompression helical member 52 acts on the 2nd mixture 32 under the feeding screw 18, the extruding force that the 2nd mixture 32 is born is uniformly dispersed, and therefore can make the uniform high-quality coal briquette 11 of density continuously.In addition, even 52 wearing and tearing of decompression helical member, this decompression helical member 52 can not bring obstacle to the moulding of coal briquette 11 yet.Have again, when needing to change decompression helical member 52, owing to, therefore can improve the operating efficiency of changing parts as long as taking off this decompression helical member 52 separately changes.
The make-up machine of the coal briquette of the present invention of record is as technical scheme 3 or 4 described make-up machines in the technical scheme 5, as Fig. 2 and Fig. 3 further shown in, it is characterized in that, feeding screw 18 is driven with motor 51 by feeding, and a side rotating shaft 23a is pressed to the opposing party's rotating shaft 24a by hydraulic cylinder pressure in accordance with regulations among pair of rotary shafts 23a, the 24a of supporting a pair roller 23,24;
The axle base of pair of rotary shafts 23a, 24a is monitored by range sensor;
Controller is exported based on the testing result of this range sensor and is controlled the rotating speed of feeding with motor 51.
In the make-up machine of the coal briquette of putting down in writing in this technical scheme 5 of the present invention, the axle base of range sensor monitoring pair of rotary shafts 23a, 24a, controller is used the rotating speed of motor 51 according to the testing result output control feeding of this range sensor, promptly control the rotary speed of feeding screw 18, therefore can make the extruding force of 18 pairs the 2nd mixtures 32 of feeding screw often remain on optimum value.
The make-up machine of the coal briquette of the present invention of record is as each described make-up machine in the technical scheme 3 to 5 in the technical scheme 6, shown in Fig. 2 is further, it is characterized in that the 2nd mixture 32 in the 2nd mixer 22 transmits, stores in moulding with in the funnel 17 by conveyer; One end be connected moulding with the other end of the blast pipe 53 on the funnel 17 through precipitron 56 to atmosphere opening, the 2nd mixture of being collected by precipitron 56 32 is sent to return the 2nd mixer 22.
In the make-up machine of the coal briquette of these technical scheme 6 records, moulding, after precipitron 56 is collected the 2nd contained mixture 32 of this air, is discharged in the atmosphere through blast pipe 53 with contained most of air in the 2nd mixture 32 in the funnel 17 again.In addition, because the 2nd mixture 32 that precipitron 56 is collected is sent back to the 2nd mixer 22, therefore can prevent the reduction of the stock utilization of the 2nd mixture 32.
The coal briquette of putting down in writing in the technical scheme 7 of the present invention is the coal briquette of making by the manufacture method of the coal briquette of technical scheme 1 or 2.The coal briquette of the present invention of record is the coal briquette made from each described device in the technical scheme 3 to 6 in the technical scheme 8.
The coal briquette of record in this technical scheme 7 or 8 is in case burning, remaining sulphur and desulfurizing agent powdered reaction in the coal dust of this coal briquette, and sulphur just becomes gypsum etc. and remains in the ash, thereby can reduce the generation of SOx.
The accompanying drawing summary
Fig. 1 is the schematic diagram about the egg-type coal briquetting machine of specific embodiments of the present invention.Wherein symbol 11 is coal briquettes, the 12nd, and coal dust, the 13rd, dry type coal separation device, the 14th, desulfurizing agent powder, the 16th, plant family macromolecule organic matter powder, the 17th, moulding funnel, 21 is the 1st mixers, 22 is the 2nd mixers, the 23, the 24th, and a pair roller, 23a, 24a are pair of rotary shafts, 32 is the 2nd mixtures, the 51st, feeding motor, the 53rd, blast pipe, the 56th, precipitron.
Fig. 2 is the expansion cutaway view of A portion among Fig. 1.
Fig. 3 is the B-B line cutaway view of Fig. 2.
Fig. 4 is the whole operation block diagram of this coal briquette manufacture method.
Fig. 5 is that the operation block diagram is handled, stored to the coal feedstock in this coal briquette manufacture method.
Fig. 6 is plant family macromolecule treatment of organic matters of organic in this coal briquette manufacture method, stores the operation block diagram.
Fig. 7 is mixing in this coal briquette manufacture method, molding procedure and control of dust, recovery process block diagram.
Specific embodiments
Below in conjunction with description of drawings specific embodiments of the present invention.
Make-up machine as the coal briquette 11 of Fig. 1～shown in Figure 3 comprises, separates the dry type coal separation device 13 of removing impurity such as institute's sulfur-bearing in the coal dust 12 by the dielectric partition method;
Mixed sweetening agent powder 14 and be modulated into the 1st mixer 21 of the 1st mixture in the coal dust 12a (coal dust that contains the above carbonaceous of regulation ratio as described later) that separate to remove impurity such as most of sulphur;
Mixed plant family macromolecule organic matter powder 16 and be modulated into the 2nd mixer 22 of the 2nd mixture 32 in the 1st mixture;
Store the moulding funnel 17 of the 2nd mixture 32;
Rotatably be arranged at the feeding screw 18 in the moulding usefulness funnel 17;
Be disposed at moulding a pair roller 23,24 with funnel 17 belows.Above-mentioned coal dust 12 is the coal feedstock that mixed by charcoal composition (combustible component) and impurity (magnetic, ash content, sulphur, barren rock and pyrite etc.), successively via (Fig. 1) of producing behind magnetic removal device 28, drying device 26, reducing mechanism 27 and the sieve 29.The moisture content of this coal dust 12 is 2～15% weight, is preferably 3～7% weight.Why the moisture content of coal dust 12 is limited to 2～15% weight, is because if will strengthen dry required cost less than 2% weight, simultaneously causes the stock utilization reduction because coal dust Workflow scatters.Will cause coal dust attached to causing the fuel intensity after the moulding to reduce on the device simultaneously owing to excess moisture if surpass 15% weight.
In this specific embodiments, contain coal dust 12a (powder that the contains more charcoal composition) positively charged of the above charcoal composition of regulation ratio or not charged in the above-mentioned coal dust 12, contained charcoal composition then has negative electricity less than the coal dust 12b (powder that contains impurity such as more ash content, sulphur, barren rock, pyrite) of regulation ratio.By above-mentioned sieve 29 with coal dust 12 sieve into particle diameter in 2.0～0.1mm scope and particle diameter in two parts of the following scope of 0.1mm.Here why the particle diameter lower limit of coal dust 12 to be limited to 0.1mm, be in order to prevent dust explosion (blast that the coal dust dust causes), and the particle diameter higher limit of coal dust 12 is limited to 2.0mm, is because this particle diameter is to make the coal dust can be as coal briquette 11 solidified maximum particle diameters.In addition,, can contain several mineral matters in the particle of coal feedstock if greater than this particle diameter, like this will be because of the charged coal separation performance that reduces.Have again, if can coal dust 12 be divided into 2.000～1.000mm, 1.000～0.500mm, 0.500～0.250mm, 0.250～0.125mm and less than the particle size range of 0.125mm, then better effects if respectively thinlyyer by screening.
Dry type coal separation device 13 comprises, is used to store the coal separation funnel 33 of the coal dust 12 in the selected regulation particle size range of above-mentioned sieve 29 classifications;
Be used to transmit the coal separation feed appliance 34 of the coal dust 12 that this coal separation funnel supplies with;
Be used to separate coal dust 12 that transmits through coal separation feed appliance 34 and the static coal separation device 36 (Fig. 1) of isolating contained carbonaceous coal dust 12b below the regulation ratio by the dielectric partition method at coal dust 12a more than the regulation ratio and contained carbonaceous.The conus portion outer peripheral face of coal separation funnel 33 is provided with heater 37, and coal separation funnel 33 small diameter part outer peripheral faces are provided for accepting the charged promotion parts 38 of the high-voltage pulse that produced by the high voltage pulse generation device (not shown).The setting of heater 37 is in order to pass through the heating to the coal dust 12 in the coal separation funnel 33, make the coal dust 12 of polarization in the coal dust 12 pyroelectric effect occur (when the polarization of the coal dust 12 of polarization is big, the phenomenon that coal dust 12 surface charges of above-mentioned polarization increase on the direction of offsetting this polarization), make above-mentioned polarization coal dust charged easily thus.In addition, the setting of charged promotion parts 38 is in order to accept the high-voltage pulse that high voltage pulse generation device produces, coal dust 12 radiating electrons to coal separation funnel 33 in or capture electronics from coal dust 12, thus the coal dust that promotion can be charged is charged.Have, coal separation feed appliance 34 is vibration type feed appliances in this embodiment again.
Static coal separation device 36 is made of revolvable cydariform the 1st electrode 41 and needle-like or wire the 2nd electrode 42, the 1st electrode 41 is accepted the coal dust 12 that sent by coal separation feed appliance 34 with its outer peripheral face, and the 2nd electrode 42 is arranged on and the outer peripheral face of the 1st electrode 41 position (Fig. 1) at a distance of predetermined distance.The 1st electrode 41 is to be made by model steel such as SUS304, SS400, simultaneously ground connection.The 2nd electrode 42 is to be made by materials such as SUS304, resins, is connected the positive pole of dc source 43 simultaneously.On the 2nd electrode 42 by dc source apply+8～+ high voltage of 20kv scope.In addition, the 1st electrode 41 is because of being arranged near the 2nd electrode 42 as positive electrode, so the 1st electrode 41 becomes the negative electrode that electronics is assembled.
Needle-like the 2nd electrode 42 is to be made of many not shown short metal wires, these wires are made with the SUS304 steel, its cardinal extremity be fixed on the resin substrate and the top towards the outer peripheral face of the 1st electrode 41, this formation is applicable to the coal preparation technique of particle diameter at the coal dust of 0.1～0.5mm scope.In addition, the 2nd electrode 42 of wire is to be made of not shown several SUS304 steel metal wires, these metal wires equally spaced set up between a pair of SUS304 steel framework that the circumferencial direction along the 1st electrode 41 extends in accordance with regulations at interval, and this formation is applicable to the coal preparation technique of particle diameter at the coal dust of 0.5-2.0mm scope.Thereby above-mentioned needle-like the 2nd electrode and wire the 2nd electrode by the particle size range classification merges comparatively ideal of use.The below of the 1st electrode 41 is provided with the charcoal composition with charging basket 44, and the charcoal composition in the outside is provided with impurity usefulness charging basket 46 with the next door of charging basket 44 below the 1st electrode 41.Have, the symbol 47 of Fig. 1 is coal feedstock to be broken away from from the 1st electrode 41 outer peripheral faces use brush again.
Desulfurizing agent powder 14 is that to select average grain diameter for use be 0.01～0.2mm, is preferably the white lime (Ca (OH) of 0.02～0.1mm
2), quick lime (CaO) and calcium carbonate (CaCO
3) in one or more powder make.In these 3 kinds of desulfurizing agent powder, any independent a kind of price that purity is high is all high, so generally use the mixture of above-mentioned 3 kinds of desulfurizing agent powder.As the desulfurizing agent powder of making coal briquette 11 usefulness, the use of the mixture of above-mentioned 3 kinds of desulfurizing agent powder is because of there being following 3 features, as long as just do not have any problem with suitable mixed proportion use.
1. white lime and inorganic sulfur (particularly pyrite) can effecting reactions, therefore in the above-mentioned 3 kinds of desulfurizing agent powder desulfurized effect the bests that are used for making coal briquette 11.
2. therefore quick lime can improve effect because moisture generation hydration reaction easy and that coal adheres to can reduce the moisture of coal.
3. calcium carbonate and organic sulfur is reactive good.
Adding proportion as for above-mentioned desulfurizing agent powder 14, with respect to flammable sulphur contained in the coal dust, can make this sulphur in ashes, take place promptly to should be 1～2 weight equivalent more than the required theoretical necessary amount of curing reaction when should be burning, be preferably 1.2～1.5 weight equivalents.In addition, as plant family macromolecule organic matter powder 16, select that caloric value 3000 kcal/kg are above for use, preferred 4000～4500 kcal/kg and trade wastes moisture content 2～20% weight, preferred 5～10% weight (be selected from the agriculture and forestry discarded object, do not utilize one or more the trade waste in plant and the vegetative fiber).For example not only can use through super-dry, comminuted plants (wooden wastes such as sawdust, bark, bagasse, beet pulp, rice hulls, rice straw, the cottonseed dregs of fat etc.) powder, also can use powder through the corrugation paperboard of drying and crushing, construction waste etc.The adding proportion of this plant family macromolecule organic matter powder 16 is 5～45% weight that are equivalent to the 2nd mixture 32, and preferred 10～25% weight, its average grain diameter are 0.2～5mm, preferred 1～3mm.
Have, why the average grain diameter of desulfurizing agent powder 14 is limited to 0.01～0.2mm scope again, be because as during less than 0.01mm powder disperse easily, and can cause when surpassing 0.2mm the bad or desulfurization degree of briquetting to descend.Why the addition of desulfurizing agent powder 14 is limited to 1～2 weight equivalent scope that is equivalent to contained flammable sulphur in the coal dust 12, be because as can cause that less than 1 weight equivalent the reaction of desulfurization and sulfur curable is insufficient, and when surpassing 2 weight equivalents in the fuel ash content increase simultaneously that cost increases.
Why the caloric value of plant family macromolecule organic matter powder 16 will be limited to more than 3000 kcal/kg, is because as himself being difficult to burn away less than 3000 kcal/kg, just can not be effectively as combustion-supporting material.In addition, why the moisture content of plant family macromolecule organic matter powder 16 is limited to 2～20% weight, is because as less than 2% weight, be used for dry expense and strengthen, and can reduce owing to excess moisture cause low heating value as surpassing 20% weight, the intensity after the moulding simultaneously also can be not enough.Why the addition of plant family macromolecule organic matter powder 16 is limited to the scope of 5～45% weight, be because as less than the insufficient strength after the 5% weight moulding, it is too much not fire into simultaneously branch.As surpassing 45% weight, the insufficient strength after the moulding produces the moulding condition of poor simultaneously.Have, why the average grain diameter of plant family macromolecule organic matter powder 16 will be limited to 1～5mm scope again, is because as can increase cost of equipment less than 1mm, the insufficient strength after the moulding simultaneously.As surpassing 5mm, the insufficient strength after the moulding.
On the other hand, feeding screw 18 is driven with motor 51 (Fig. 1) by feeding, moulding is used the below force feed (Fig. 2 and Fig. 3) of funnel 17 to moulding with the 2nd mixture 32 in the funnel 17.A pair roller 23,24 is supported respectively by pair of rotary shafts 23a, 24a.Wherein a side rotating shaft 23a is supporting one side's roll 23 revolvable driven shafts, passes through the oil hydraulic cylinder (not shown) simultaneously with the rotating shaft 24a of authorized pressure crimping to the opposing party.The opposing party's rotating shaft 24a is can swivel bearing and the driving shaft that driven by the electric motor for roller (not shown) by the bearing (not shown), and the opposing party's roll 24 is fixed on the opposing party's the rotating shaft 24a.
The outer peripheral face of above-mentioned a pair roller 23,24 forms and is arranged with a plurality of recess 23b, 24b respectively, the rotation inversely under mutual crimped status of these a pair roller 23,24 outer peripheral faces, thereby with the 2nd mixture 32 compression formings of feeding screw 18 force feeds.In addition, the front end of feeding screw 18 (lower end) is provided with the decompression helical member 52 towards a pair roller 23,24 pressure contact portions.It is opposite with the torsional direction of the blade 18a of feeding screw 18 that the torsional direction of the blade 52a of this decompression helical member 52 is arranged to.Have, the axle base of pair of rotary shafts 23a, 24a is monitored by the range sensor (not shown) again.The testing result output of this range sensor is connected in the control input of controller (not shown), and the control output of controller is connected feeding with on the motor 51.
Get back to Fig. 1, the 1st mixture is sent to the 2nd mixer 22, the 2 mixtures 32 by the conveyer (not shown) from the 1st mixer 21 and is sent to moulding funnel 17 by the conveyer (not shown) from the 2nd mixer 22.Here, in the 1st and the 2nd mixer 21,22 or from mixer when conveyer is transferred, or from conveyer when mixer is transferred, must have air to sneak in the 1st and the 2nd mixture.Be connected with an end of blast pipe 53 in moulding with funnel 17 upper ends, the other end of this blast pipe 53 is connected the suction inlet of exhaust with air blast 54, and the outlet of air blast 54 is to atmosphere opening.In addition, blast pipe 53 is provided with precipitron 56, and the 2nd mixture 32 that precipitron 56 is collected is sent by the 1st conveyer 71 through the 1st transfer path 61 and returns the 2nd mixer 22.
Be provided with an end of belt conveyor 57 below a pair roller 23,24, the other end of belt conveyor 57 is provided with the case sprills separator 58 that its opening is covered by net 58a.The mesh of this net 58a is arranged to the diameter less than solid fuel 11.The 2nd mixture of storing in the powder separator 58 32 is sent by the 2nd conveyer 72 through the 2nd transfer path 62 and returns the 2nd mixer 22.The symbol 63 and 64 of Fig. 1 is dust shields of collecting the 2nd floating mixture 32, and this dust shield 63,64 is connected on the blast pipe 53.In addition, the symbol 55 of Fig. 1 is to be used to regulate the damper of air mass flow of blast pipe 53 of flowing through.Have again, the symbol 81 and 82 of Fig. 1 be in the 2nd tiny mixture mixed adhesive (blackstrap etc.) to make the preparation prilling granulator of the about 1mm granulation of particle diameter.
According to Fig. 1～Fig. 7 the method for making coal briquette 11 with the device of said structure is described below.
As shown in Figure 4, the coal dust of handling, storing in the operation that coal dust, the desulfurizing agent handling, store store the desulfurizing agent powder, the plant family macromolecule treatment of organic matters of organic that store in the operation, store processing stores in the operation plant family macromolecule organic matter powder and control of dust in coal feedstock, collect in the recovery process is supplied with mixing, molding procedure in the lump, in this mixing, molding procedure, with above-mentioned coal feedstock, desulfurizing agent powder and the moulding of plant family macromolecule organic matter powder, make coal briquette (finished product).
Detailed process is at first as Fig. 1～shown in Figure 5, remove the magnetic in the coal feedstock that is mixed with charcoal composition and impurity with magnetic removal device 28, use drying device 26 dryings then, pulverizing with reducing mechanism 27, is coal dust 12 and particle diameter the coal dust 12 0.1mm below of particle diameter in 2.0～0.1mm scope with sieve 29 with its sizing screening again.Then, particle diameter is supplied with coal separation funnel 33 at the coal dust 12 of 2.0～0.1mm scope.At this moment, 12 phase mutual friction of coal dust make easily charged coal dust 12 have positive electricity or negative electricity respectively by separately polarity.In addition, particle diameter is supplied with 2nd mixer 22 by preparing after prilling granulator 81 is made the granulation of the about 1mm of particle diameter at the coal dust below the 0.1mm 12.
The coal dust 12a of positively charged in the coal dust 12 that supplies to the 1st electrode 41 outer peripheral faces (containing the above charcoal composition of regulation ratio powder), the Coulomb force effect that is subjected to the 1st electrode 41 is attached to moving on the outer peripheral face of the 1st electrode 41 (negative pole) and to the lower end of the 1st electrode 41, by brush 47 its outer peripheral face from the 1st electrode 41 is peeled off, be housed in the charcoal composition with in the charging basket 44.In addition, uncharged coal dust 12a in the coal dust 12 that supplies to the 1st electrode 41 outer peripheral faces (containing the above charcoal composition of regulation ratio powder), when arriving the side of the 1st electrode 41 outer peripheral faces, be subjected to the deadweight effect to break away from the outer peripheral face of the 1st electrode 41, be housed in the charcoal composition with in the charging basket 44.Have again, electronegative coal dust 12b in supplying to the 1st electrode 41 outer peripheral face coal dusts 12 (contained charcoal composition is less than the powder of regulation ratio), be subjected to the Coulomb force of the 2nd electrode 42 to act on the 1st electrode 41 outer peripheral face predetermined distance scope places that fly out, accommodate with charging basket 46 by impurity.Here, the containing ratio of flammable sulphur is 5～6% weight in the coal dust 12 that is gone out by sieve 29 classifications, in contrast, the charcoal composition only is that 1～2% weight is few like this with the sulphur containing ratio of the coal dust 12a that charging basket 44 is accommodated, and the most of sulphur in the coal dust 12 is removed by aforementioned dry type coal separation device 13 as ash content.
On the one hand, as shown in Figure 6, after magnetic in the plant family macromolecule organic matter 16 (be selected from the agriculture and forestry discarded object, do not utilize 1 in plant and the vegetative fiber or trade waste more than 2 kind) is removed by magnetic removal device 16a, stored after pulverizing by drying device 16b drying and by reducing mechanism 16c organic matter with funnel 16d in.
Under look like Fig. 1 and shown in Figure 7, after above-mentioned charcoal composition together offered the 1st mixer 21 and is modulated into the 1st mixture with coal dust 12a that accommodates in the charging basket 44 and desulfurizing agent powder 14, the 1st mixture and above-mentioned plant family macromolecule organic matter powder 16 together offered the 2nd mixer 22 and are modulated into the 2nd mixture 32.Therefore, the first, coal dust 12a preferentially contacts with desulfurizing agent powder 14 and coal dust 12a preferentially is desulfurized 14 coatings of agent powder.The second, plant family macromolecule organic matter powder 16 contacts with desulfurizing agent powder 14 hardly and plant family macromolecule organic matter powder 16 is desulfurized 14 coatings of agent powder hardly.Its result, the addition of desulfurizing agent powder 14 can reduce, and desulfurizing agent powder 14 can effectively utilize simultaneously, and quality of fuel also is improved.In addition, as plant family macromolecule organic matter powder 16, owing to be to be selected from the agriculture and forestry discarded object, not utilize one or more the industrial waste in plant and the vegetative fiber (to be not limited to plant, also comprise refuses such as corrugation paperboard or construction waste) dry, use after being ground into powder, the jointing material that these powder can be used as coal dust 12a effectively utilizes.
After above-mentioned the 2nd mixture 32 supplied in the moulding usefulness funnel 17, the 2nd mixture 32 squeezed into 23,24 of a pair roller (Fig. 2 and Fig. 3) by feeding screw 18.At this moment the extruding force that will act on the 2nd mixture 32 under the feeding screw 18 because of decompression helical member 52 is uniformly dispersed, and therefore can make the uniform high-quality solid of density hybrid fuel 11.At this moment, moulding after contained the 2nd mixture collects in this air, is discharged (Fig. 1 and Fig. 7) to atmosphere through blast pipe 53 and through precipitron 56 with air contained in the 2nd mixture 32 in the funnel 17.Its result, because of most of air contained in the 2nd mixture 32 can be immediately from moulding with discharging in the funnel 17, so this air has not just existed with the interior interference that operation produced of pushing the 2nd mixture 32 by feeding screw of funnel 17 to moulding.
On the one hand, on the belt conveyer 57 that transmits coal briquette 11, when coal briquette 11 fell, Powdered the 2nd mixture 32 also fell thereupon, and nearby floating Powdered the 2nd mixture 32 of belt conveyer 57 is collected (Fig. 1) through the 3rd recurrent canal 73 by precipitron 56 by dust gathering arrester 63.In addition, coal briquette 11 on the belt conveyer 57 and Powdered the 2nd mixture 32 send powder separator 58 to, after by this powder separator 58 Powdered the 2nd mixture 32 being separated from coal briquette 11, it is sent by the 2nd transfer path 62 through the 2nd conveyer 72 again return the 2nd mixer 22.And then, after coal briquette 11 is discharged from powder separator 58, can be free floating attached to Powdered the 2nd mixture 32 on this coal briquette 11, but collected by precipitron 56 again from the 4th recurrent canal 74 through dust gathering arrester 64.The 2nd mixture 32 that above-mentioned precipitron 56 is collected returns the 2nd mixer 22 by the 1st conveyer 71 through the 1st transfer path 61 and by preparing to send after prilling granulator 82 is made the particle of the about 1mm of particle diameter.Its result has prevented the reduction of the 2nd mixture 32 stock utilizations.
In addition, the rotation by feeding screw 18 can have delicate variation (Fig. 2 and Fig. 3) along with the different of its water content and particle diameter to the extruding force that the 2nd mixture 32 that is pressed between a pair roller 23,24 produces.Promptly, if moulding changes with the extruding force on the 2nd mixture 32 in the funnel 17, then with regard to respective change, the axle base that supports pair of rotary shafts 23a, the 24a of a pair roller 23,24 simultaneously also changes (Fig. 1～Fig. 3) thereupon with the load of motor 51 (Fig. 1) in feeding.Controller is exported according to the testing result of the range sensor that detects this axle base and is controlled the rotating speed of feeding with motor 51.Specifically, when to the extruding force increase of the 2nd mixture 32, the increasing of above-mentioned axle base, controller is just turned down the rotating speed of feeding with motor 51, thereby lowers this extruding force.When the extruding force of the 2nd mixture 32 is lowered, when above-mentioned axle base diminishes, controller is just heightened the rotating speed of feeding with motor 51, thereby increases extruding force.Its result can make feeding screw 18 (Fig. 2 and Fig. 3) that the extruding force of the 2nd mixture 32 is often remained on appropriate value, thereby can make high-quality coal briquette 11 continuously.
Have, even owing to long-term the use causes reducing pressure helical member 52 wearing and tearing, this decompression helical member 52 can not constitute the obstacle to coal briquette 11 moulding yet again.In addition, own owing to only needing to take out this decompression helical member 52 when changing decompression helical member 52, so improved the efficient that more changes jobs
The coal briquette of making like this 11 is in when burning, remaining sulphur and desulfurizing agent powdered reaction in the coal dust of this coal briquette 11, and the compositions such as gypsum that sulphur is become in the ashes are remaining, so can effectively reduce the generation of SOx.
As mentioned above, according to the present invention, sulphur contained in the dried coal dust separates removal by the dielectric partition method of dry type coal separation, after the mixed sweetening agent powder is modulated into the 1st mixture in this coal dust again, in the 1st mixture, mix caloric value and be plant family macromolecule organic matter powder more than 3000 kcal/kg to be modulated into the 2nd mixture, and then with the 2nd mixture with the authorized pressure compression forming, make coal briquette, therefore with the dielectric partition method of dry dry type coal separation, most of sulphur content contained in the coal dust can be left away and remove.Like this, the first, coal dust preferentially contacts with the desulfurizing agent powder and coal dust preferentially is desulfurized the coating of agent powder.The second, plant family macromolecule organic matter powder contacts with the desulfurizing agent powder hardly and plant family macromolecule organic matter powder is desulfurized the coating of agent powder hardly.Its result, with to add nearly the white lime (desulfurizing agent powder) of 15～19% weight in the manufacture method of solid molding fuel in the past and compare, just can meet the demands as long as add few desulfurizing agent powder among the present invention to 3～6% weight, therefore when reducing desulfurizing agent powder addition, can also effectively utilize the quality of desulfurizing agent powder and raising solid molding fuel.
In addition, as plant family macromolecule organic matter powder, can be selected from the agricultural industrial waste, the powder after not utilizing one or more trade wastes in plant and the vegetative fiber to pulverize, but be not limited to plant, refuses such as corrugation paperboard, construction waste also can effectively utilize as the jointing material of coal dust.
Sulphur contained in the dried coal dust separates removal by dry type coal separation device, in the 1st mixer, in this coal dust, be mixed into the desulfurizing agent powder again, be modulated into the 1st mixture, mix caloric value on the 2nd mixer in the 1st mixture is that plant family macromolecule organic matter powder more than 3000 kcal/kg is modulated into the 2nd mixture, and then advance the 2nd mixture force feed between a pair roller and, make coal briquette by this breaker roll compression forming by feeding screw.As the structure adopting, same as described above, the first, coal dust preferentially contacts with the desulfurizing agent powder and coal dust preferentially is desulfurized the coating of agent powder.The second, plant family macromolecule organic matter powder contacts with the desulfurizing agent powder hardly and plant family macromolecule organic matter powder is desulfurized the coating of agent powder hardly.Its result, when reducing desulfurizing agent powder addition, the quality that can also effectively utilize the desulfurizing agent powder and improve solid molding fuel.
Moulding is with being provided with rotatable feeding screw in the funnel, its front end is provided with the decompression helical member towards a pair roller pressure contact portion place, and the blade twist direction of this decompression helical member is arranged to opposite with the torsional direction of the blade of feeding screw.As setting, the feeding screw rotation that is provided with in funnel when moulding is with the extruding of the 2nd mixture between a pair roller the time, the decompression helical member acts on the 2nd mixture under the feeding screw, the extruding force that the 2nd mixture is born is uniformly dispersed, and therefore can make the uniform high-quality coal briquette of density.Have, even the wearing and tearing of decompression helical member, this decompression helical member can not constitute the obstacle to briquetting yet again.In addition, when changing the decompression helical member,, improved the operating efficiency of changing owing to only need to take out this decompression helical member itself.
The axle base of the pair of rotary shafts of supporting a pair roller is monitored by range sensor, and controller is exported according to the testing result that detects this range sensor and controlled the rotating speed of feeding with motor.As the structure adopting, because of the rotary speed of feeding screw is controlled, make feeding screw often remain on appropriate value to the extruding force of the 2nd mixture.Its result can make high-quality coal briquette continuously.
Have again, the 2nd mixture in the 2nd mixer by conveyer transmit, store to moulding with in the funnel, to atmosphere opening, the 2nd mixture that precipitron is collected send and returns in the 2nd mixer other end of the blast pipe that an end and moulding are connected with funnel by precipitron.As adopt this structure, moulding, is discharged to atmosphere after precipitron the 2nd mixture that this air is contained is collected by blast pipe with the contained air of the 2nd mixture in the funnel again.Its result, can be immediately with contained air in the 2nd mixture from moulding with discharging the funnel, therefore this air has not just existed with the interference that process produced of pushing the 2nd mixture by feeding screw in the funnel to moulding, returned the 2nd mixer because the 2nd mixture that precipitron is collected send again, so just can prevent the reduction of the stock utilization of the 2nd mixture.
When using the coal briquette burning that said method or device make, remaining sulphur and desulfurizing agent powdered reaction in the coal dust of this coal briquette so just can make sulphur become gypsum etc. and remain in the ashes, so being lowered of SOx.
Claims (2)
1. the make-up machine of a coal briquette has:
Store the moulding funnel (17) of material powder;
Be arranged on moulding revolvably with in the funnel (17), moulding used the feeding screw (18) of funnel (17) below force feed with the above-mentioned raw materials powder in the funnel (17) to moulding;
Be arranged on moulding with below the funnel (17), its outer peripheral face forms and is arranged with most recess (23b, 24b) and the rotation inversely mutually under mutual crimped status of its outer peripheral face, a pair roller (23 with the above-mentioned raw materials powders compression moulding of feeding screw (18) force feed, 24), it is characterized in that, the front end of above-mentioned feeding screw (18) is towards a pair roller (23,24) the pressure contact portion place is provided with decompression helical member (52), and the torsional direction of the blade (52a) of this decompression helical member (52) is arranged to opposite with the torsional direction of the blade (18a) of feeding screw (18).
2. the make-up machine of coal briquette as claimed in claim 1 is characterized in that, a side rotating shaft (23a) is pressed to the opposing party's rotating shaft (24a) by hydraulic cylinder pressure in accordance with regulations in the pair of rotary shafts (23a, 24a) of supporting a pair roller (23,24);
The axle base of described pair of rotary shafts (23a, 24a) is monitored by range sensor;
Controller is exported based on the testing result of this range sensor and is controlled the rotating speed of feeding with motor (51).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011401214A CN1194078C (en) | 2001-11-26 | 2001-11-26 | Process of producing composite solid fuel and producing apparatus thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011401214A Division CN1194078C (en) | 2001-11-26 | 2001-11-26 | Process of producing composite solid fuel and producing apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644362A true CN1644362A (en) | 2005-07-27 |
| CN1302914C CN1302914C (en) | 2007-03-07 |
Family
ID=4675669
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100026360A Expired - Fee Related CN1302914C (en) | 2001-11-26 | 2001-11-26 | Coal briquette moulding apparatus |
| CNB011401214A Expired - Fee Related CN1194078C (en) | 2001-11-26 | 2001-11-26 | Process of producing composite solid fuel and producing apparatus thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011401214A Expired - Fee Related CN1194078C (en) | 2001-11-26 | 2001-11-26 | Process of producing composite solid fuel and producing apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN1302914C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052497A (en) * | 2011-02-28 | 2013-04-17 | 新东工业株式会社 | Briquette machine |
| CN104057636A (en) * | 2014-06-18 | 2014-09-24 | 努桑 | Household cow dung forming machine |
| CN104228110A (en) * | 2013-06-19 | 2014-12-24 | 亿利资源集团有限公司 | Calcium carbide powder forming equipment and process for machining calcium carbide powder into calcium carbide balls or blocks |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6051677B2 (en) * | 2012-08-21 | 2016-12-27 | 新東工業株式会社 | Granulator |
| CN110065256A (en) * | 2019-01-05 | 2019-07-30 | 新疆洁净能源技术研究院 | A kind of new coal powder high pressure forming device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3171365B2 (en) * | 1994-07-15 | 2001-05-28 | 新東工業株式会社 | Metal scrap briquetting machine |
| JPH09174294A (en) * | 1995-12-22 | 1997-07-08 | Sintokogio Ltd | Briquette machine |
| JPH09192896A (en) * | 1996-01-19 | 1997-07-29 | Sintokogio Ltd | Briquette machine |
| JP3747984B2 (en) * | 1997-10-21 | 2006-02-22 | ホソカワミクロン株式会社 | Briquetting machine |
| JPH11147200A (en) * | 1997-11-11 | 1999-06-02 | Sintokogio Ltd | Apparatus for granulating fine powder and method for granulating fine powder |
-
2001
- 2001-11-26 CN CNB2005100026360A patent/CN1302914C/en not_active Expired - Fee Related
- 2001-11-26 CN CNB011401214A patent/CN1194078C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052497A (en) * | 2011-02-28 | 2013-04-17 | 新东工业株式会社 | Briquette machine |
| CN103052497B (en) * | 2011-02-28 | 2016-10-12 | 新东工业株式会社 | Briquetting press |
| CN104228110A (en) * | 2013-06-19 | 2014-12-24 | 亿利资源集团有限公司 | Calcium carbide powder forming equipment and process for machining calcium carbide powder into calcium carbide balls or blocks |
| CN104228110B (en) * | 2013-06-19 | 2016-04-13 | 亿利资源集团有限公司 | Calcium carbide powder former is adopted calcium carbide powder to be processed into the technique of calcium carbide ball or block |
| CN104057636A (en) * | 2014-06-18 | 2014-09-24 | 努桑 | Household cow dung forming machine |
| CN104057636B (en) * | 2014-06-18 | 2016-08-24 | 西藏大学 | Family cattle manure forming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1302914C (en) | 2007-03-07 |
| CN1194078C (en) | 2005-03-23 |
| CN1421514A (en) | 2003-06-04 |
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