CN103196801A - Method and apparatus for measuring dynamic thermal stability of solid particles - Google Patents

Abstract

The invention discloses a method and an apparatus for measuring dynamic thermal stability of solid particles. The method, while heating the solid particles, enables the solid particles to move so as to realize mutual friction and collision among the solid particles. The apparatus comprises an actuating mechanism, a motion mechanism and a heating mechanism for heating the solid particles, wherein the solid particles are put into a rotating cylinder used as the motion mechanism, and the rotating cylinder is driven by the actuating mechanism to rotate. According to the invention, dynamic thermal stability of coal, semi-coke, activated carbon, coke, briquette and other solid particle samples can be stimulated under conditions of different temperature, heating ways, heating rates, environment atmospheres and rotating speeds of the rotating cylinder, that is, crushing and pulverization of the solid particle samples subjected to thermal stress, mechanical wear and particle collision in the rotating cylinder can be obtained through tests, thereby truly reflecting a crushing and pulverization degree of the solid particles during a practical industrial utilization process, and thus building a determination standard which is about dynamic thermal stability of the solid particles and is relatively close to the reality.

Description

Dynamic thermal stability assay method and the device of solid particle

Technical field

The invention belongs to the thermal stability determination field of coal, particularly, relate to thermal stability determination method and the devices of solid particle under dynamic situation such as coal, semicoke, moulded coal or coal mass active carbon.

Background technology

Thermal stability is solid particles such as coal, semicoke, moulded coal in one of important evidence of technologies such as burning, pyrolysis, gasification.Thermal stability refers to solid particle degree of stability under heat effect in high-temp combustion or pyrolysis, gasification, and just the coal sample of the certain particle size back that is heated keeps the performance of original granularity.The coal of Heat stability is good can not be broken into fritter or broken less with its original granularity burning or pyrolysis, gasification in burning or pyrolysis, gasification.The coal of poor heat stability is broken into fritter rapidly in burning or pyrolysis, gasification, even becomes fine coal.Require to use lump coal to make industrial layers combusting boiler or the producer gas generator of fuel or raw material, if use the coal of poor heat stability, to cause that carry-over increases, size-grade distribution is inhomogeneous and increase stove inner fluid resistance in the stove, when serious even form wind-tunnel and cause slagging scorification, thereby whole pyrolysis, gasification or combustion process can not normally be carried out, not only cause operating difficulties but also can reduce burning or pyrolysis, gasification efficiency.

Therefore, having proposed respectively with coal and moulded coal in GB/T1573-2001 " the thermal stability determination method of coal " and MT/T924-2004 " industrial shaping coal heat stability testing method " is the thermal stability determination method of the solid particle sample of representative, what wherein investigate is the thermal stability of solid particle sample under quiescent conditions, broken degree takes place after just the coal of certain particle size and quality or moulded coal being heated to uniform temperature in the muffle furnace of secluding air.But in burning or gasification, solid particle not only is subjected to thermal stress, is actually between thermal stress, particle the acting in conjunction of collision and mechanical wear and fragmentation takes place.Therefore, thermal stability determination to solid particle in two above-mentioned national standard assay methods can not truly reflect the breaking and Dusting degree of solid particle in real process, because they do not consider collision and mechanical wear between particle in the actual industrial process, the result who obtains is sample static heat stability indicator.This static heat stability test result and actual industrial utilize the process difference huge, can't play the effect of producing, designing of instructing.In addition, although the development of middle low temperature pyrogenation technology is rapid, semicoke output constantly increases, and does not still have any dependence test method and standard about semicoke.And for coal mass active carbon, in " mensuration of ature of coal granular activated carbon test method intensity " of GB/T7702.3-2008, only its intensity is tested, thermal stability related useless is measured.

To sum up, demand setting up a cover urgently and can simulate the apparatus and method of the evaluation solid particle breaking and Dusting of practical application in industry process.

Summary of the invention

The dynamic thermal stability assay method and the device that the purpose of this invention is to provide a kind of solid particle utilize the solid dynamic thermal stability index of the degree of the breaking and Dusting in the process to obtain truly to reflect solid particle in actual industrial.

For achieving the above object, according to an aspect of the present invention, a kind of dynamic thermal stability assay method of solid particle is provided, and this assay method makes described solid particle produce motion to realize phase mutual friction and the collision of solid particle when solid particle is heated.

Preferably, pack into described solid particle in the rotating cylinder and drive this rotating cylinder rotation, so that described solid particle moves in described rotating cylinder.

Preferably, described solid particle is coal mass active carbon, and a plurality of steel balls are housed in the described rotating cylinder.

Preferably, this method comprises puts into heating furnace heating with the described rotating cylinder that is mounted with described solid particle, and/or feeds the heating steps of hot gas so that described solid particle is heated in described rotating cylinder.

Preferably, the rotating speed of described rotating cylinder is not higher than 80r/min, is preferably 30r/min～50r/min.

Preferably, this method also comprises the cooling step that the described rotating cylinder that will be mounted with described solid particle takes out and cools off from described heating furnace, in this cooling step, described solid particle in described rotating cylinder naturally the cooling or by toward described rotating cylinder in the feeding cold air so that described solid particle is carried out Quench.Like this, can measure dynamic thermal stability under different heating rates and the cooldown rate.

Preferably, the rate of heat addition of described solid particle and/or cooldown rate are 5 ℃/min～100 ℃/min.

According to another aspect of the present invention, the corresponding dynamic thermal stability determinator that a kind of solid particle is provided, the heating arrangements that this device comprises for the motion of loading solid particle and is used for solid particle is heated, described motion is by the actuating mechanism actuation movement, produce corresponding sports to drive described solid particle, thereby realize phase mutual friction and the collision of this solid particle.

Preferably, described motion is rotating cylinder, and described heating arrangements comprises heating furnace, and wherein, this heating furnace and described rotating cylinder arrange on position-adjustable ground each other, so that described rotating cylinder can be positioned at described heating furnace or be positioned at the outer and space of described heating furnace.

Preferably, this device also comprises frame and rotating shaft, and this rotating shaft is horizontally disposed with and is installed on the described frame, and described rotating cylinder is installed on the end of described rotating shaft.

Preferably, described actuating mechanism is electric rotating machine, and described rotating shaft is provided with first gear, and the output shaft of described electric rotating machine is provided with second gear, forms the external toothing transmission between described first gear and second gear.

Preferably, described heating furnace comprises body of heater and wing furnace door, this wing furnace door pocket is contained in the described rotating shaft, along on the central axial direction of described rotating shaft, wherein being installed on the base of described dynamic thermal stability determinator with respect to another person in the body of heater of described heating furnace and the described wing furnace door position-movablely.

Preferably, this device also comprises the linear electric machine that links to each other with the body of heater of described heating furnace, and this linear electric machine is used for moving described body of heater along the central axial direction of described rotating shaft.

Preferably, the bottom of described body of heater is provided with drag chain.

Preferably, this device comprises the slip lid that is movably connected on the described frame, and the body of heater of described heating furnace is arranged on the described base movably, and described body of heater has first make-position and second make-position at moving direction, wherein:

In described first make-position, described body of heater engages with the wing furnace door and described rotating cylinder is contained in the described heating furnace, and described slip lid is positioned at the top of described body of heater;

In described second make-position, described body of heater separates with the wing furnace door and described rotating cylinder is positioned at outside the described heating furnace, and described slip lid can turn to open side and closed this body of heater of described body of heater around described frame.

Preferably, the inwall of described body of heater is provided with the support bar that protrudes towards described rotating shaft, is formed with the groove that matches with described support bar on the outer wall of described rotating cylinder, and in described first make-position, described support bar is inserted in the described groove.

Preferably, above-mentioned heating arrangements also comprises draft tube and the gas outlet that is connected on the described rotating cylinder, and an end of described draft tube connects thermal source gas, and the other end and described gas outlet all are communicated to the inner cavity chamber of described rotating cylinder.

Preferably, this device also comprises mounting sleeve, this mounting sleeve fixed cover is located in the described rotating shaft, described rotating cylinder comprises rotating cylinder portion and fixed installation portion, described rotating cylinder portion is installed in the described rotating shaft and links to each other with described fixed installation portion, described fixed installation portion is installed in the end of described mounting sleeve, described draft tube and gas outlet are connected respectively in the described fixed installation portion, are formed with the gas channel that is communicated to inner cavity chamber of described rotating cylinder portion from described draft tube and gas outlet in wherein said rotating cylinder portion and the fixed installation portion.

Preferably, described gas channel comprises air inlet circuit, exhaust circuit, roof air flue and diapire air flue, described air inlet circuit and exhaust circuit that be arranged on described rotating cylinder portion with the first side wall that described fixed installation portion links to each other on, described roof air flue and diapire air flue are separately positioned on the roof of described rotating cylinder portion and the diapire and are communicated with the inner cavity chamber of described rotating cylinder portion, described air inlet circuit is communicated with described draft tube, roof air flue and diapire air flue respectively, and described exhaust circuit is communicated with inner cavity chamber and the described gas outlet of described rotating cylinder portion.

Preferably, described the first side wall comprises first potsherd, and this first potsherd is embedded in this first side wall to be used for filtering gas, and is formed with described air inlet circuit and exhaust circuit on described first potsherd.

Preferably, described fixed installation portion comprises second potsherd for filtering gas, and this second potsherd is embedded in this fixed installation portion and with described first potsherd and fits, and is used for the gas of closed cavity chamber.Described second potsherd is provided with intake interface and the exhaust port that is communicated with described air inlet circuit and exhaust circuit respectively, and this intake interface is connected described draft tube and gas outlet respectively with exhaust port.

Preferably, cooperate for keyway between described the first side wall and the described rotating shaft.

Preferably, described the first side wall is removably installed between the roof and diapire of described rotating cylinder portion.

Preferably, described wing furnace door and described rotating cylinder are installed on the described mounting sleeve at interval, be provided with abutment sleeve between described wing furnace door and the rotating cylinder, be formed with stage portion on the described mounting sleeve, the both sides of described wing furnace door are resisted against respectively on described stage portion and the described abutment sleeve.

Preferably, described wing furnace door is provided with through hole, and described draft tube and gas outlet pass described through hole and be connected on the described rotating cylinder.

Preferably, this device also comprises the compression spring device, and the two ends of this compression spring device are biased in respectively on described frame and the described mounting sleeve, with towards the described wing furnace door of the direction pushing tow of described body of heater.

Dynamic thermal stability assay method according to above-mentioned a kind of solid particle of the present invention, make when solid particle is heated described solid particle produce motion to realize phase mutual friction and the collision of solid particle, can simulate the dynamic thermal stabilities of solid particle sample under different temperatures, type of heating, the rate of heat addition, environment and rotating cylinder speed conditions such as coal, semicoke and moulded coal.Utilize corresponding dynamic thermal stability determinator of the present invention, can test draw the solid particle sample in rotating cylinder, be subjected to thermal stress such as heating furnace or hot gas and and the mechanical wear of rotating cylinder and particle between collision wait and fragmentation and the efflorescence of generation, reflect that truly solid particle utilizes the degree of the breaking and Dusting in the process in actual industrial.Thereby the criterion about the dynamic thermal stability of solid particle that can set up closing to reality more.

Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.

Description of drawings

Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of instructions, is used from explanation the present invention with following embodiment one, but is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is that the heating furnace among the figure is in first make-position according to the structural representation of the dynamic thermal stability determinator of the solid particle of preferred implementation of the present invention, i.e. body of heater and wing furnace door closure, and slip lid is positioned at the body of heater top;

The heating furnace that Fig. 2 illustrates the dynamic thermal stability determinator of the solid particle among Fig. 1 is in second make-position, and namely body of heater separates with the wing furnace door and body of heater and slip lid closure, wherein for clarity sake, has also done to dissect demonstration for the mounting structure of rotating shaft;

Fig. 3 amplifies the mounting structure between rotating cylinder, rotating shaft and the wing furnace door that has shown in Fig. 2 device, and the gas channel that illustrates between rotating cylinder and draft tube and the escape pipe is arranged;

Fig. 4 is the cut-open view of the rotating cylinder portion of rotating cylinder shown in Figure 3, has removed the first side wall that links to each other with fixed installation portion in the rotating cylinder portion wherein;

Fig. 5 is the front view of first potsherd in the rotating cylinder shown in Figure 3;

Fig. 6 is the front view of second potsherd in the rotating cylinder shown in Figure 3;

Fig. 7 is the structural representation of the alternating temperature rotating cylinder mechanism of a preferred embodiment of the invention;

Fig. 8 is the structural representation according to the alternating temperature rotating cylinder mechanism of another kind of preferred implementation of the present invention.

Description of reference numerals

1 frame, 2 bases

3 slip lids, 4 draft tube

5 gas outlets, 6 rotating cylinders

7 wing furnace doors, 8 electric rotating machines

9 first gears, 10 second gears

11 rotating shafts, 12 heating furnaces

13 drag chains, 14 linear electric machines

15 support bars, 16 mounting sleeves

17 first potsherds, 18 second potsherds

19 abutment sleeves, 20 the first side walls

21 compression spring devices, 22 second sidewalls

62 fixed installation portions of 61 rotating cylinder portions

A intake interface B exhaust port

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.

In the present invention, under the situation of not doing opposite explanation, the noun of locality of use as " upper and lower " normally at direction shown in the drawings or at vertically, each parts mutual alignment relationship description word on the vertical or gravity direction.

As previously mentioned, in order to simulate the breaking and Dusting phenomenon of solid particle in the practical application in industry process better, it is the solid particle sample, as coal, semicoke, moulded coal or activated charcoal, in burning, gasification and pyrolytic process, because collision between particle, mechanical wear and the breaking and Dusting phenomenon because taken place by thermogenetic thermal stress effect, the present invention proposes a kind of dynamic thermal stability assay method of solid particle, this assay method makes solid particle produce motion to realize phase mutual friction and the collision of solid particle when solid particle is heated.As total technical conceive, emphasis of the present invention is to be different from prior art and the standard solid particles such as coal are only considered the thermal stability result that heating sample is measured under the static situation of sample maintenance separately, increased the dynamic similation to collision and the friction of solid particle on the basis that solid particle is heated, with the particle of particle breaking and Dusting process in the better reflection actual industrial factors such as collision and mechanical wear of rolling.

On the basis of above-mentioned total technical conceive, the present invention is for the phenomenon of quantitative test solid particle breaking and Dusting in said process, on the basis of the thermal stability determination method of existing coal, introduce the dynamic thermal stability index as estimating the efflorescence degree of solid particle in said process.Mentioned herein and dynamic thermal stability just solid sample produce collision simultaneously, wear and tear and keep the character of original granularity being subjected to the thermal stress effect that high temperature produces, and set up a sample mass that overlaps to be retained on the testing sieve with this and accounted for the massfraction of original sample as the method for dynamic thermal stability index.And, develop the special-purpose test unit of a cover for this reason and be used for the simulation said process, below will set forth one by one.

Make solid particle produce motion to realize phase mutual friction and the collision of solid particle when for being implemented in solid particle being heated, better simulate the practical application in industry process, can adopt the solid particle sample of certain particle size is put into motions such as rotating cylinder or vibratory screening apparatus, to follow that this motion rotates or motion such as vibration, make solid particle follow and produce vibration or rolling, produce collision and mechanical wear between the particle and between particle and the motion.In following embodiment, referring to Fig. 1, pack into solid particle in the rotating cylinder 6 and drive this rotating cylinder 6 rotations, so that solid particle moves in rotating cylinder 6.Use the motion severe degree that rotating cylinder can more convenient control solid particle, can quantize by rotating speed control, thereby described motion adopts rotating cylinder comparatively suitable in test.Can be heat radiation from electric furnace etc. and solid particle is carried out heating heat, can also be gas heat carrier that comes from the outside etc.Referring to Fig. 1, as selectable two kinds of type of heating, the rotating cylinder 6 that is mounted with solid particle can be put into heating furnace 12 heating, and/or in rotating cylinder 6, feed hot gas so that solid particle is heated.Like this, the coal sample in the rotating cylinder 6 can be subjected to the combined action of collision between particle, mechanical wear and thermal stress simultaneously and fragmentation takes place.

In the method according to this invention, for obtaining concrete dynamic thermal stability index, be normative reference to be retained in the massfraction that sample mass on the testing sieve accounts for original sample.Particularly, treat solid particle for example coal sample in the rotating cylinder 6 of motion after after a while, coal sample cooling back weighing can be sieved.When sieving and setting up index parameter, should treat with a certain discrimination for the solid particle of heterogeneity.For example, for coal sample and semicoke, granularity can be accounted for the percentage of residual burnt quality sums at different levels as dynamic thermal stability index DTS greater than the residual burnt quality of 6mm _{+ 6}Account for the percentage of residual burnt quality sums at different levels respectively as dynamic thermal stability auxiliary characteristics DTS with 3-6mm with less than the residual burnt quality of 3mm _3-6, DTS _-3For moulded coal, granularity can be accounted for the percentage of residual burnt quality sums at different levels as dynamic thermal stability index DTS greater than the residual burnt quality of 13mm _{+ 13}Account for the percentage of residual burnt quality sums at different levels respectively with the residual burnt quality less than 3mm as thermal stability auxiliary characteristics DTS _-3And for the bigger coal mass active carbon of intensity, optional, can put into a plurality of steel balls in the rotating cylinder 6 as required to strengthen collision and wearing and tearing, account for the massfraction of former activated charcoal as the dynamic thermal stability index of activated charcoal with the quality that is retained on the testing sieve.

The inventive method by above introduction, can investigate under the thermal stress effect of heat radiation or gas heat carrier generation, wearing and tearing between the sample particle between mutual collision and particle and the plant equipment, obtain the dynamic thermal stability index of solid sample, this index more can reflect the breaking and Dusting phenomenon of particle in the actual industrial process.Below only the inventive method has been done the principle elaboration, the dynamic thermal stability determinator that also will be combined into the solid particle of realizing the inventive method and developing below to describe in detail particularly the inventive method.

At first introduce the dynamic thermal stability determinator of solid particle of the present invention.Make solid particle produce motion to realize phase mutual friction and the collision of solid particle when for being implemented in solid particle being heated, the heating arrangements that apparatus of the present invention should comprise for the motion of loading solid particle on total functional structure at least and be used for solid particle is heated, motion is by the actuating mechanism actuation movement, produce corresponding sports to drive solid particle, thereby realize phase mutual friction and the collision of this solid particle.

Following as a kind of preferred implementation, in conjunction with illustrated in figures 1 and 2, adopted rotary-actuated mechanism, rotating cylinder 6 and heating arrangements respectively, solid particle is packed in the rotating cylinder 6, and rotating cylinder 6 drives rotation by rotary-actuated mechanism.Solid particle just rolls in rotating cylinder and collision each other like this, with the actual dynamic process in the simulation commercial Application process.

In conjunction with illustrated in figures 1 and 2, dynamic thermal stability determinator according to solid particle of the present invention also comprises base 2, heating arrangements comprises heating furnace 12, this heating furnace 12 and rotating cylinder 6 are installed in to position-adjustable base 2 tops each other, so that rotating cylinder 6 can be positioned at heating furnace 12 or be positioned at heating furnace 12 outer and spaces.In other words, can adopt 12 pairs of solid particles of heating furnace to heat, heating furnace 12 and rotating cylinder 6 be installed on the base 2 and can be mutually between the two near or away from, for example heating furnace 12 maintains static, rotating cylinder 6 can be flatly or vertical direction move forward into/go out in the body of heater of heating furnace 12.In the apparatus structure of present embodiment, adopt the mode of rotating cylinder 6 motionless and mobile heating furnaces 12, as depicted in figs. 1 and 2, so that moving structure is simpler, easy to operate.

In the present embodiment, apparatus of the present invention also comprise frame 1 and rotating shaft 11, and this rotating shaft 11 is horizontally disposed with and is installed on the frame 1, and rotating cylinder 6 is installed on the end of rotating shaft 11.Rotating shaft 11 can drive rotating cylinder 6 and rotate, and rotating shaft 11 levels stretch out and not extending, thereby the stationkeeping of rotating cylinder 6, can be contained in movably in the heating furnace 12.Move horizontally between rotating cylinder 6 and the heating furnace 12, more convenient compared to the movement of vertical direction, save energy, and the high-temperature gas of emerging from the heating furnace top can avoid vertical direction and move the time is to may injuring that the people brings.In addition, above-mentioned rotary-actuated mechanism preferably adopts electric rotating machine 8, and rotating shaft 11 is provided with first gear 9, and the output shaft of electric rotating machine 8 is provided with and forms the external toothing transmission between second gear, 10, the first gears 9 and second gear 10.Electric rotating machine 8 drives rotating cylinder 6 rotations by the simplest kind of drive like this.

As Fig. 1 or shown in Figure 2, for making the removable and heating furnace of heating furnace 12 conveniently close or open, heating furnace 12 herein is designed to comprise body of heater and wing furnace door 7, this wing furnace door 7 is sleeved in the rotating shaft 11, and the body of heater of heating furnace 12 is being installed on the base 2 movably along position on the central axial direction of rotating shaft 11.The body of heater of heating furnace 12 can connect linear electric machine 14, and this linear electric machine 14 can be fixedly mounted on base 2 or the frame 1, and its output shaft is used for moving body of heater along the central axial direction of rotating shaft 11.In addition, the bottom of furnace body of heating furnace 12 can be provided with drag chain 13, and drag chain is used for reciprocating occasion the built-in cable of body of heater, oil pipe, tracheae, water pipe etc. are played traction and protective effect.The every joint of drag chain can both be opened, and is easy for installation and maintenance.But low, the wear-resisting high-speed motion of noise during motion.

In the heating furnace 12 of device illustrated in figures 1 and 2, of particular note, for safety, this heating furnace 12 is also particularly including the slip lid 3 that is connected in movable connection method especially articulated manner on the frame 1, the body of heater of heating furnace 12 has first make-position and second make-position at moving direction, wherein in as shown in Figure 1 first make-position, body of heater engages with wing furnace door 7 and rotating cylinder 6 is contained in the heating furnace 12, and slip lid 3 is positioned at the top of body of heater.In second make-position as shown in Figure 2, body of heater separates with wing furnace door 7 and rotating cylinder 6 is positioned at outside the heating furnace 12, and the hinge of slip lid 3 on frame 1 turns to open side and closed this body of heater of body of heater.Wherein those skilled in the art will be understood that, should design the articulated structure between slip lid 3 and the frame 1 by the shift motion in conjunction with heating furnace 12, the for example shape of position of articulating point, articulated jib, length, the amplitude of oscillation etc., and guiding travel mechanism also can be set between slip lid 3 and the body of heater, thereby finally make and mechanically form above-mentioned matching relationship between slip lid 3 and the heating furnace 12.Because the design of the design of above-mentioned for example articulated jib geomery or guiding travel mechanism, all are common practise or the conventional design that to understand and to know for those skilled in the art, as long as provide the concrete matching relationship that arranges between slip lid 3 and the heating furnace 12, those skilled in the art can design multiple cooperation slide construction, only illustrate a kind of articulated structure among Fig. 1 and Fig. 2, alternate manner or specific structural details are given unnecessary details no longer one by one at this.By this matching relationship between slip lid 3 and the heating furnace 12, remove wing furnace door 7 back with after taking out the solid particle in the rotating cylinder 6 at body of heater, treat that body of heater moves to second make-position, slip lid 3 can be automatically, closed heating furnace 12 immediately.Because temperature can avoid heat to escape and injure operating personnel up to nearly 1000 ℃ like this in the body of heater.

As shown in Figure 2, also can be provided with the support bar 15 that protrudes towards rotating shaft 11 on the inwall of body of heater, be formed with the groove that matches with support bar 15 on the outer wall of rotating cylinder 6 (being second sidewall 22 shown in Figure 7).In first make-position as shown in Figure 1, support bar 15 is inserted in the groove.Support bar 15 is arranged on the central axis extended line of rotating shaft 11, can make like this rotating cylinder 6 as shown in Figure 1 be positioned at that heating furnace 12 heats and when rotating, can obtain support structure by support bar 15, rotate more steady.In addition, in the device shown in Figure 1, actuating mechanism is mainly rotary electric machine 8, linear electric motors 14 and as the electric furnace of heating furnace 12, the parameter of required control is mainly the rotating speed of rotating cylinder 6, the heating-up temperature of heating furnace 12, the shift motion of heating furnace 12 etc., steering logic is simple, realizes easily.What those skilled in the art can know is, can realize above-mentioned control by multiple control modes, for example PLC control is controlled in conjunction with motor frequency conversion, and realizes by simple automatically controlled wiring, thereby no longer concrete control mode, steering logic and control structure is made specific descriptions at this equally.As Fig. 1 or shown in Figure 2, left end at base 2 is provided with the button of respectively rotary electric machine 8, linear electric motors 14 and heating furnace 12 being controlled, also can carry out control operation by the control interface of hommization, for example some squares of base 2 right-hand members are display screen, and the motor speed that operating personnel can show by the observation display screen, heating-up temperature etc. are carried out handled easily.

By above explanation to main structural components and installation and fit structure, can make solid particle produce motion to realize phase mutual friction and the collision of solid particle when just solid particle being heated by the basic dynamic thermal stability assay method of realizing above-mentioned solid particle of this device.Below will further elaborate and expand explanation each critical piece, so that those skilled in the art better and more specifically understands the dynamic thermal stability determinator according to solid particle of the present invention.

At first of particular note heating furnace 12, and employed heating furnace 12 is different from the heating furnace that lid is established at common top fully in the dynamic thermal stability determinator of above-mentioned solid particle.Heating furnace 12 of the present invention comprises body of heater and wing furnace door 7, the removable setting of in this body of heater and the wing furnace door 7 (perhaps body of heater and wing furnace door 7 the two equal), be connected and spaced apart so that can break away from body of heater and another person in the wing furnace door 7, perhaps engage with closed heating furnace 12 with another person.In other words, heating furnace 12 of the present invention can also be that body of heater is fixed and mode that wing furnace door 7 moves, but as example, below only with wing furnace door 7 as shown in Figure 1 fixing and body of heater movably mode be described.By fire door being arranged on the side of body of heater, and the part of heating furnace 12 is removable, can make operating personnel's heating object of can safe ready ground taking in the heating furnace 12, avoid burning, and the portable closing structure of heating furnace 12 also is convenient to automatic control, namely realizes heating furnace 12 is moved control.The setting of slip lid 3 also can avoid the heat in the heating furnace 12 to escape.

Wherein, be provided preferably with on the wing furnace door 7 be used to the container that holds heating object, rotating cylinder 6 shown in Figure 1 for example, this container stretches out towards body of heater from the inwall of wing furnace door 7.By container being connected on the wing furnace door 7, can be along with wing furnace door 7 be obtained heating thing on the container with separating of body of heater by operating personnel after to be heated the finishing, perhaps heating is gone to and is loaded material to be heated in the container.Heating furnace 12 can be installed on frame 1 and the base 2, and wing furnace door 7 is fixedly connected on the frame 1, and body of heater is arranged on the base 2 movably with respect to wing furnace door 7.Particularly, as shown in Figure 3, wing furnace door 7 can be fixedly mounted on the mounting sleeve 16 that is sheathed in the rotating shaft 11, and mounting sleeve 16 is connected on the frame 1, below will describe in detail.In addition, as shown in Figures 2 and 3, also can be provided with compression spring device 21 between wing furnace door 7 and the frame 1, the direction biased side fire door 7 that this compression spring device 21 is used for towards body of heater provides snap-in force to give wing furnace door 7, closes tight wing furnace door 7.

Heating furnace 12 of the present invention is not limited to and is subjected to shown in Figure 2 to be promoted by linear electric machine 14, also can promote by alternate manner, for example in conjunction with the manual manipulation mode of slide rail or screw mandrel.Can be provided with the slide rail of arranging with respect to the moving direction of wing furnace door 7 along described body of heater on the base 2, this slide rail is provided with the slide block that is slidingly matched, and body of heater links to each other with slide block, moves thereby promote body of heater with sliding type.Promote for convenient, on the base 2 screw mandrel can be installed preferably, this screw mandrel is arranged in the slide rail and with slide block fixedlys connected.Like this, operating personnel can promote the body of heater straight line simply effortlessly and move by shaking rocking handle.In addition, as previously mentioned, this heating furnace 12 comprises slip lid 3, and this slip lid 3 is used for engaging with body of heater when body of heater is spaced apart with wing furnace door 7, with closed this body of heater.Heat after this slip lid 3 is set can prevents body of heater and wing furnace door 7 separates escapes, and it can be manual or automatically controlled, mechanical system arranges etc., no longer repeats at this.

In addition, introduce a kind of alternating temperature rotating cylinder mechanism in detail below with reference to the dynamic thermal stability determinator of solid particle illustrated in figures 1 and 2.As Fig. 7 or shown in Figure 8, this alternating temperature rotating cylinder mechanism comprises draft tube 4, rotating cylinder 6 and rotating shaft 11, and rotating cylinder 6 is installed in the end of rotating shaft 11, and an end of draft tube 4 connects thermal source gas, and the other end is communicated to the inner cavity chamber of rotating cylinder 6.Wherein, rotating shaft 11 can drive rotating cylinder 6 and rotate, and draft tube 4 can feed heated air or refrigerating gas in rotating cylinder 6, as a kind of selectable type of heating, can be used as independent type of heating and use, also can use in conjunction with heating furnace 12, constitute the heating arrangements in the dynamic thermal stability determinator.Yet, because rotating cylinder 6 rotation, in the rotating cylinder during feeding hot gas, should guarantee that draft tube 4 can not follow the rotation of rotating cylinder 6 and produce problem such as winding by draft tube 4.

For this reason, the cylindrical shell of rotating cylinder 6 can be rotated but draft tube 4 is motionless relatively.As a kind of preferred implementation, as shown in Figure 7, this alternating temperature rotating cylinder mechanism also comprises gas outlet 5 and mounting sleeve 16, these mounting sleeve 16 fixed covers are located in the rotating shaft 11, rotating cylinder 6 comprises rotating cylinder portion 61 and fixed installation portion 62, rotating cylinder portion 61 is installed in the rotating shaft 11 and with fixed installation portion 62 and links to each other, fixed installation portion 62 is installed on the mounting sleeve 16, draft tube 4 and gas outlet 5 are connected respectively in the fixed installation portion 62, wherein are formed with the gas channel that is communicated to 61 inner cavity chamber of rotating cylinder portion from draft tube 4 and gas outlet 5 in rotating cylinder portion 61 and the fixed installation portion 62.Wherein, mounting sleeve 16 can directly be fixedly attached on the shell of frame 1, perhaps as shown in Figure 2, is installed on the vertical mounting rod in the frame 1 by more complicated structure.Like this, the fixed installation portion 62 of draft tube 4, gas outlet 5 and rotating cylinder 6 can be fixedly mounted on the mounting sleeve 16, and the rotating cylinder portion 61 of rotating cylinder 6 then drives rotation by rotating shaft 11, can realize that by the air flue setting in the rotating cylinder 6 gas is communicated with between the two.

Particularly, extremely shown in Figure 7 as Fig. 4, above-mentioned gas channel preferably includes air inlet circuit, exhaust circuit, roof air flue and diapire air flue, air inlet circuit and exhaust circuit (Fig. 4 does not show) can be arranged on rotating cylinder portion 61 and the first side wall 20 that fixed installation portion 62 links to each other, roof air flue and diapire air flue are separately positioned on the roof of rotating cylinder portion 61 and the diapire and with the inner cavity chamber of rotating cylinder portion 61 and are communicated with, the air inlet circuit is communicated with draft tube 4, roof air flue and diapire air flue respectively, and the exhaust circuit is communicated with inner cavity chamber and the gas outlet 5 of rotating cylinder portion 61.Wherein because air inlet circuit and exhaust circuit form and be arranged on annularly on the first side wall 20, even the first side wall 20 rotations, still can with fixed installation portion 62 on intake interface link to each other with exhaust port.As shown in Figure 4, can offer a plurality of air intake openings on the roof of rotating cylinder portion 61 and the diapire to be communicated with rotating cylinder 6 inner cavity chamber, make air inlet even, can be heated to the innermost solid particle of inner cavity chamber.

The rotating cylinder portion 61 of rotating cylinder 6 forms with fixed installation portion 62 and is rotatably connected, and for guaranteeing impermeability, the gas-dynamic sealing should be set also between the two, for example adds sealing ring etc.But in the present embodiment, in order to form sealing better and to filter and follow the little impurity of solid particle that hot gas flows out, introduced potsherd.That is: as shown in Figure 5, the first side wall 20 comprises first potsherd 17, and this first potsherd is embedded in this first side wall 20 to be used for filtering gas, and is formed with air inlet circuit and exhaust circuit on first potsherd 17.And as shown in Figure 6, fixed installation portion 62 comprises second potsherd 18 for filtering gas, this second potsherd is embedded in this fixed installation portion 62 and with first potsherd 17 and fits, second potsherd 18 is provided with intake interface A and the exhaust port B that is communicated with air inlet circuit and exhaust circuit respectively, and this intake interface A is connected draft tube 4 and gas outlet 5 respectively with exhaust port B.Like this, by the applying of first potsherd 17 and second potsherd 18, intake interface A links to each other with the air inlet circuit of bypass road in first potsherd 17 all the time, and exhaust port B links to each other with the exhaust circuit of interior circuit in first potsherd 17 all the time.Fitting tightly of first potsherd 17 and second potsherd 18 can concern to realize with the mutual installation site of fixed installation portion 62 by rotating cylinder portion 61.For example, fixed installation portion 62 is fixedly mounted on the installing sleeve 16, and rotating cylinder portion 61 can cooperate with keyway between the rotating shaft 11 by the first side wall 20, makes rotating cylinder portion 61 be posted by fixed installation portion 62, to compress first potsherd 17 and second potsherd 18.

In addition, the first side wall 20 is preferably between the roof and diapire that is removably installed in rotating cylinder portion 61.Be illustrated in figure 4 as rotating cylinder portion 61 parts of having removed behind the first side wall 20, as seen from the figure, when solid particle heats in rotating cylinder 6 and after rotation finishes, rotating cylinder portion 61 can be unloaded, take out first potsherd 17 in the first side wall 20, the part that then the first side wall 20 shown in Fig. 4 is fastened between roof and the diapire is taken out, and weighs thereby the solid particle inside taking out easily screens.Similarly, but toward rotating cylinder inner cavity chamber when packing solid particle into reverse operating with assembling rotating cylinder 6.

As shown in Figure 8, as another kind of embodiment, this alternating temperature rotating cylinder mechanism comprises draft tube 4, rotating cylinder 6 and the rotating shaft 11 of coaxial arrangement, and rotating shaft 11 is connected on the side sidewall of rotating cylinder 6 and rotates to drive this rotating cylinder 6, and draft tube 4 is connected on the opposite side sidewall of rotating cylinder 6.In other words, rotating shaft 11 and draft tube 4 are connected on the both sides sidewall of rotating cylinder 6 and coaxial setting.When rotating shaft 11 drove rotating cylinders 6 and rotates, draft tube 4 can form static relatively, thereby obtained the alternating temperature rotating cylinder mechanism with the another kind of version with identical function shown in Figure 7.

Wherein, draft tube 4 can be positioned on the central axis extended line of rotating shaft 11 and be connected in by modes such as rolling bearings on the sidewall of rotating cylinder 6.Like this, rotating cylinder 6 rotates by rolling bearing being set to realize that draft tube 4 is motionless, perhaps realizes being similar to the sliding of sliding bearing between draft tube 4 and the rotating cylinder 6 to roll and slipper seal, follows rotating cylinder 6 and rotates and problems such as generation winding thereby solve draft tube 4.

Can be nested with gas outlet 5 in the draft tube 4, be formed with the circular passage between this draft tube 4 and the gas outlet 5, gas outlet 5 stretches in the inner cavity chamber of rotating cylinder 6, and is formed with gas channel in the sidewall of rotating cylinder 6 and the perisporium, and this gas channel is communicated with the inner cavity chamber of circular passage and rotating cylinder 6.That is to say, the sidewall of rotating cylinder 6 and perisporium preferably form the sandwich wall structure, form gas channel in the middle of the sandwich wall, this gas channel and draft tube 4 link to each other with circular passage between the gas outlet 5, thereby the hot gas of inflow in the draft tube 4 evenly is dispersed to rotating cylinder 6 inner cavity chamber everywhere.As shown in Figure 8, draft tube 4 can be installed in the low order end sandwich wall of right sidewall of rotating cylinder 6 and draft tube 4 ends end between the sandwich wall of right sidewall by rolling bearing, and draft tube 4 also can play and replace 15 pairs of rotating cylinders 6 of support bar to play a supporting role.And gas outlet 5 is installed in the sandwich wall that keeps left of right sidewall and inserts in the rotating cylinder inner cavity chamber by rolling bearing, derives with the heated air with inner cavity chamber.Certainly, as the selectable mounting means of another kind, rotating shaft 11 can be designed to tubular shaft, and 5 references of gas outlet mode in the draft tube 4 of being set in is set in the rotating shaft 11 and stretches in the inner cavity chamber of rotating cylinder 6, thereby derives heated air at opposite side.

On the basis of above-mentioned detailed description to heating furnace 12 and alternating temperature rotating cylinder mechanism, on the dynamic thermal stability determinator of the solid particle of using this heating furnace 12 and alternating temperature rotating cylinder mechanism, also can adopt the gas type of heating as can be known, be that described heating arrangements also comprises draft tube 4 and the gas outlet 5 that is connected on the rotating cylinder 6, one end of draft tube 4 connects thermal source gas, and the other end and gas outlet 5 all are communicated to the inner cavity chamber of rotating cylinder 6.Can be in conjunction with adopting gas type of heating and heating furnace type of heating.In addition, can also feed the gas that is used for Quench by draft tube 4, to investigate the thermal stability performance of solid particle under the situation of Quench condition and different Quench speed, below will describe in detail.

In conjunction with employing gas type of heating the time, as shown in Figure 3, wing furnace door 7 and rotating cylinder 6 are installed on the mounting sleeve 16 at interval, are provided with abutment sleeve 19 between wing furnace door 7 and the rotating cylinder 6, be formed with stage portion on the mounting sleeve 16, the both sides of wing furnace door 7 are resisted against respectively on stage portion and the abutment sleeve 19.Like this, wing furnace door 7 is with regard to axial location and be fixedly mounted on the installing sleeve 16.At this moment, can be provided with through hole on the wing furnace door 7, draft tube 4 and gas outlet 5 pass through hole and are connected on the rotating cylinder 6.The supporting role that wing furnace door 7 plays draft tube 4 and gas outlet 5 at this moment.In addition, for making that wing furnace door 7 and body of heater can tight closes in the first above-mentioned make-position, should apply one towards the pretightning force of body of heater at wing furnace door 7.Therefore as shown in Figures 2 and 3, compression spring device 21 can be set also, the two ends of this compression spring device finally are biased in respectively on frame 1 and the mounting sleeve 16, with the direction pushing tow wing furnace door 7 towards body of heater.

To sum up, on the basis of the detailed description of above-mentioned dynamic thermal stability determinator to solid particle and parts heating furnace 12 and alternating temperature rotating cylinder mechanism, but specific design is according to the determination step of the dynamic thermal stability assay method of solid particle of the present invention.As depicted in figs. 1 and 2, at first the sample of certain mass and particle size range can be put into rotating cylinder 6, rotating cylinder 6 is connected with rotating shaft 11, heating furnace 12 can provide the heat with the heat radiation form, if investigate the type of heating of gas heat carrier form, after hot gas can being entered rotating cylinder and heating sample from draft tube 4, discharge from gas outlet 5.Then set the rotating speed of rotating cylinders 6 at base 2, when sample after predetermined temperature stops required time, cooling and weighing sample are poured sample on the suitable sieve at last, build and fixing screening.Quality on the sieve is compared as the dynamic thermal stability index with the quality of always sieving.

Be used for testing the dynamic thermal stability that granularity is the solid particle sample of 2-30mm in the following embodiment.In the device as depicted in figs. 1 and 2, draft tube 4 and gas outlet 5 can be by the switches of needle valve pilot piping, with the sealing that realizes rotating cylinder 6 and unimpeded.Control knob on the base 2 is respectively realizes rotary electric machine 8, electric furnace 12 and linear electric motors 14 switches, and the display screen on the base 2 can show temperature and the rotating cylinder rotating speed of draft tube 4, gas outlet 5, rotating cylinder 6.The sample of certain particle size is put into rotating cylinder 6, adjust rotary electric machine 8 by control knob and drive rotating shaft 11, make rotating cylinder 6 reach required rotating speed, moved forward to by linear electric motors 14 control electric furnace bodies and wrap rotating cylinder 6 fully, by heating furnace 12 heated drums 6 to predetermined temperature; When using gas heat carrier that sample is carried out Fast Heating, hot gas is discharged from gas outlet 5 after entering rotating cylinder 6 and sample contact heat-exchanging by draft tube 4.

To be the acquisition that example specifically describes dynamic thermal stability assay method and dynamic thermal stability index with coal, semicoke, moulded coal and activated charcoal successively in the following embodiment, but need to prove that solid particle is not limited to above 4 kinds.Wherein for ease of test and with reference to national standard and industry standard, the heating-up temperature of solid particle is preferably set to 835 ℃～865 ℃, and the rotating speed of rotating cylinder 6 should not be higher than 80r/min, is preferably set to 30r/min～50r/min.

Embodiment one: the dynamic thermal stability assay method of coal

1, prepares the about 1.5Kg of air-dried sample of 6-13mm granularity by the regulation of GB474, get 500cm behind the mixing ³Coal sample, weighing (claiming accurate to 0.01g).

2, coal sample is packed in the rotating cylinder 6, and rotating cylinder 6 is connected with rotating shaft 11.Draft tube 4 and gas outlet 5 are closed secluding air, rapidly rotating cylinder 6 is sent in heating furnace 12 flat-temperature zones that are warmed up to 900 ℃, (if investigate the gas heat carrier heat form, hot gas is fed in the rotating cylinder from draft tube 4, gas is discharged by gas outlet 5 by the coal seam is thick.) open rotating switch, the setting rotating speed is 50r/min, furnace temperature is transferred to (850 ± 15) ℃, makes coal sample rotate 30min under this temperature.When coal sample had just been sent into heating furnace 12, furnace temperature may descend, and required this moment in 8min furnace temperature to return to (850 ± 15) ℃, cancelled otherwise measure.

3, from heating furnace 12, take out rotating cylinder 6, be cooled to room temperature, residual Jiao's of weighing gross mass (claiming accurate to 0.01g), sieve and the screen bottom tray of aperture 6mm and 3mm are overlayed on the sieve shaker, then residual Jiao after the weighing is poured in the 6mm sieve, build sieve lid and be fixed, start sieve shaker, screening 10min.

4, respectively weighing screening back granularity is compared residual Jiao's at different levels quality addition and the total residual burnt quality before the screening greater than 6mm, 3-6mm and less than residual Jiao's at different levels of 3mm quality (claiming accurate to 0.01g), and the difference of the two is no more than ± 1g, cancels otherwise measure.

5, the dynamic thermal stability index of coal and auxiliary characteristics are by formula calculated (1)～(3):

${\mathrm{DTS}}_{+6}=\frac{m_{+6}}{m}\×100---\left(1\right)$

${\mathrm{DTS}}_{3-6}=\frac{m_{3-6}}{m}\×100---\left(2\right)$

${\mathrm{DTS}}_{-3}=\frac{m_{-3}}{m}\×100---\left(3\right)$

In the formula: DTS _{+ 6}---the dynamic thermal stability index of coal, unit is %;

DTS _3-6, DTS _-3---the dynamic thermal stability auxiliary characteristics of coal, unit is %;

M---residual burnt quality sums at different levels, unit is g;

m _{+ 6}---granularity is greater than the residual burnt quality of 6mm, and unit is g;

m _3-6---granularity is the residual burnt quality of 3-6mm, and unit is g;

m _-3---granularity is less than the residual burnt quality of 3mm, and unit is g.

6, carry out parallel sample experiment as stated above, calculate the mean value of twice replication residual burnt index at different levels.

7, residual burnt evaluation of indexes values at different levels are pressed the GB/T483 predetermined data rule for rounding off revision of the convention behind the radix point one, quote as end product.

Embodiment two: the dynamic thermal stability assay method of semicoke

1, prepares the about 1.5Kg of the dry semicoke sample of air of 6-13mm granularity by the regulation of GB474, get 500cm3 semicoke sample behind the mixing, weighing (claiming accurate to 0.01g).

2, the semicoke sample is packed in the rotating cylinder 6, and rotating cylinder 6 is connected with rotating shaft 11.Draft tube 4 and gas outlet 5 are closed secluding air, rapidly rotating cylinder 6 is sent in heating furnace 12 flat-temperature zones that are warmed up to 900 ℃, (if investigate the gas heat carrier heat form, hot gas is fed in the rotating cylinder from draft tube 4, gas is discharged by gas outlet 5 by the coal seam is thick.) open rotating switch, the setting rotating speed is 50r/min, furnace temperature is transferred to (850 ± 15) ℃, makes the semicoke sample rotate 30min under this temperature.When the semicoke sample had just been sent into heating furnace 12, furnace temperature may descend, and required this moment in 8min furnace temperature to return to (850 ± 15) ℃, cancelled otherwise measure.

3, from heating furnace 12, take out rotating cylinder 6, be cooled to room temperature, residual Jiao's of weighing gross mass (claiming accurate to 0.01g), sieve and the screen bottom tray of aperture 6mm and 3mm are overlayed on the sieve shaker, then residual Jiao after the weighing is poured in the 6mm sieve, build sieve lid and be fixed, start sieve shaker, screening 10min.

4, respectively weighing screening back granularity is compared residual Jiao's at different levels quality addition and the total residual burnt quality before the screening greater than 6mm, 3-6mm and less than residual Jiao's at different levels of 3mm quality (claiming accurate to 0.01g), and the difference of the two is no more than ± 1g, cancels otherwise measure.

5, the dynamic thermal stability index of semicoke and auxiliary characteristics are calculated by formula (1)～(3):

${\mathrm{DTS}}_{+6}=\frac{m_{+6}}{m}\×100---\left(1\right)$

${\mathrm{DTS}}_{3-6}=\frac{m_{3-6}}{m}\×100---\left(2\right)$

${\mathrm{DTS}}_{-3}=\frac{m_{-3}}{m}\×100---\left(3\right)$

In the formula: DTS _{+ 6}---the dynamic thermal stability index of semicoke, unit is %;

DTS _3-6, DTS _-3---the dynamic thermal stability auxiliary characteristics of semicoke, unit is %;

M---residual burnt quality sums at different levels, unit is g;

M+6---granularity is greater than the residual burnt quality of 6mm, and unit is g;

M3-6---granularity is the residual burnt quality of 3-6mm, and unit is g;

M-3---granularity is less than the residual burnt quality of 3mm, and unit is g.

6, carry out parallel sample experiment as stated above, calculate the mean value of twice replication residual burnt index at different levels.

7, residual burnt evaluation of indexes values at different levels are pressed the GB/T483 predetermined data rule for rounding off revision of the convention behind the radix point one, quote as end product.

Embodiment three: the dynamic thermal stability assay method of moulded coal

1, pick out flawless, complete substantially moulded coal from the industrial shaping coal sample of taking by the regulation of MT/T915, therefrom random choose goes out the moulded coal (about 10) of about 500g, claims accurate quality to 0.01g.

2, the moulded coal sample is packed in the rotating cylinder 6, and rotating cylinder 6 is connected with rotating shaft 11.Draft tube 4 and gas outlet 5 are closed secluding air, rapidly rotating cylinder 6 is sent in heating furnace 12 flat-temperature zones that are warmed up to 900 ℃ in advance, (if investigate the gas heat carrier heat form, hot gas is fed in the rotating cylinder from draft tube 4, gas is discharged by gas outlet 5 by the coal seam is thick.) open rotating switch, the setting rotating speed is 50r/min, furnace temperature is transferred to (850 ± 15) ℃, makes the moulded coal sample rotate 30min under this temperature.When the moulded coal sample had just been sent into heating furnace 12, furnace temperature may descend, and required this moment in 8min furnace temperature to return to (850 ± 15) ℃, cancelled otherwise measure.

3, from heating furnace 12, take out rotating cylinder 6, be cooled to room temperature, residual Jiao's of weighing gross mass (claiming accurate to 0.01g), sieve and the screen bottom tray of aperture 13mm and 3mm are overlayed on the sieve shaker, then residual Jiao after the weighing is poured in the 13mm sieve, build sieve lid and be fixed, start sieve shaker, screening 5min.

4, respectively weighing screening back granularity is compared residual Jiao's at different levels quality addition and the total residual burnt quality before the screening greater than 13mm, 3-13mm and less than residual Jiao's at different levels of 3mm quality (claiming accurate to 0.01g), and the difference of the two is no more than ± 1g, cancels otherwise measure.

5, the dynamic thermal stability index of moulded coal and auxiliary characteristics are calculated by formula (1)～(2):

${\mathrm{DTS}}_{+13}=\frac{m_{+13}}{m}\×100---\left(1\right)$

${\mathrm{DTS}}_{-3}=\frac{m_{-3}}{m}\×100---\left(2\right)$

In the formula: DTS _{+ 13}---the dynamic thermal stability index of moulded coal, unit is %;

DTS _-3---the dynamic thermal stability auxiliary characteristics of moulded coal, unit is %;

M---residual burnt quality sums at different levels, unit is g;

m _{+ 13}---granularity is greater than the residual burnt quality of 6mm, and unit is g;

m _-3---granularity is less than the residual burnt quality of 3mm, and unit is g.

6, for the moulded coal of BTS+13 〉=50, calculate twice replication result's mean value, by the GB/T483 predetermined data rule for rounding off revision of the convention behind the radix point one quote; For the moulded coal of BTS+13＜50, then quote with BTS+13＜50 forms.

Embodiment four: the dynamic thermal stability assay method of coal mass active carbon

1, (column-shaped active carbon that nominal value is not less than 2.0mm is selected the testing sieve of 1.0mm for use to select suitable testing sieve for use, column and irregular activated charcoal less than 2.0mm select for use this product minimum particle size to sieve the testing sieve in layer aperture 1/2) dry activated carbon is shaken sieve 1min, remove dust.

2, get 50mL sample and weighing with graduated cylinder, be accurate to 0.1g, place to be placed with the rotating cylinder 6 that diameter is 5 steel balls of 14.3mm, rotating cylinder 6 is connected with rotating shaft (11).Air intake (4) and gas outlet 5 are closed secluding air, rapidly rotating cylinder 6 is sent in heating furnace 12 flat-temperature zones that are warmed up to preset temperature, (if investigate the gas heat carrier heat form, hot gas is fed in the rotating cylinder from draft tube 4, gas is discharged by gas outlet 5 by the coal seam is thick.) open rotating switch (1), the setting rotating speed is 50r/min, makes coal sample rotate 5min under this preset temperature.When coal sample had just been sent into heating furnace 12, furnace temperature may descend, and requirement this moment furnace temperature in 1min returns to preset temperature, cancels otherwise measure.

3, from heating furnace 12, take out rotating cylinder 6, be cooled to room temperature, take out steel ball, sample is moved on the testing sieve of having chosen, build the sieve lid and be fixed, start sieve shaker, screening 5min.

4, shake after sieve finishes, on the collection screen layer and be embedded in sample on the sieve aperture, weighing is accurate to 0.1g.

5, the dynamic thermal stability index of activated charcoal is in massfraction, and numerical value is represented with %, calculates by formula (1):

$\mathrm{DTS}=\frac{m_1}{m}\×100---\left(1\right)$

In the formula: m ₁---the sieve layer is gone up and is embedded in sample mass on the sieve aperture, and unit is g;

M---sample gross mass, unit is g;

6, carry out parallel sample experiment as stated above, the result is with the arithmetic mean value representation, and the difference of twice measurement result is not more than 2%.

Wherein, the method according to this invention can also feed the gas that is used for Quench by draft tube 4, to investigate the thermal stability performance of solid particle under the situation of Quench condition and different Quench speed.Particularly, rotating cylinder 6 is being shifted out heating furnace 12 in the cooling step of cool to room temperature, solid particle can adopt the nature cooling in rotating cylinder 6, but more preferably be in rotating cylinder 6, to feed cold air so that solid particle is carried out Quench, this moment, rotating cylinder 6 can still keep rotation, controlled cooldown rate by the cold air that feeds of control and speed thereof and flow.According to the performance of solid particle and test needs, its cooldown rate preferably is controlled to be 5 ℃/min-100 ℃/min, to reach the cooling purpose within reasonable time, does not make solid particle produce situations such as cracking because of sub-cooled again.Similarly, send into heating furnace 12 or feed in the rotating cylinder 6 heating steps that hot gas heat from the rotating cylinder 6 that is mounted with solid particle, the rate of heat addition also preferably is controlled to be 5 ℃/min-100 ℃/min.

Below describe preferred implementation of the present invention by reference to the accompanying drawings in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.

Need to prove in addition, each concrete technical characterictic described in above-mentioned embodiment under reconcilable situation, can make up by any suitable manner, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.

In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (26)

1. the dynamic thermal stability assay method of solid particle is characterized in that, this assay method makes described solid particle produce motion to realize phase mutual friction and the collision of solid particle when solid particle is heated.

2. the dynamic thermal stability assay method of solid particle according to claim 1 is characterized in that, packs into described solid particle in the rotating cylinder (6) and drives this rotating cylinder (6) rotation, so that described solid particle moves in described rotating cylinder (6).

3. the dynamic thermal stability assay method of solid particle according to claim 2 is characterized in that, described solid particle is coal mass active carbon, and described rotating cylinder is equipped with a plurality of steel balls in (6).

4. the dynamic thermal stability assay method of solid particle according to claim 2, it is characterized in that, this method comprises puts into heating furnace (12) heating with the described rotating cylinder (6) that is mounted with described solid particle, and/or feeds the heating steps of hot gas so that described solid particle is heated in described rotating cylinder (6).

5. the dynamic thermal stability assay method of solid particle according to claim 4 is characterized in that, the rotating speed of described rotating cylinder (6) is not higher than 80r/min, is preferably 30r/min～50r/min.

6. the dynamic thermal stability assay method of solid particle according to claim 4, it is characterized in that, this method also comprises the cooling step that the described rotating cylinder (6) that will be mounted with described solid particle takes out and cools off from described heating furnace (12), in this cooling step, described solid particle in described rotating cylinder (6) naturally cooling or by feeding cold air in the described rotating cylinder (6) so that described solid particle is carried out Quench.

7. the dynamic thermal stability assay method of solid particle according to claim 6 is characterized in that, the rate of heat addition of described solid particle and/or cooldown rate are 5 ℃/min～100 ℃/min.

8. the dynamic thermal stability determinator of solid particle, it is characterized in that, the heating arrangements that this device comprises for the motion of loading solid particle and is used for solid particle is heated, described motion is by the actuating mechanism actuation movement, produce corresponding sports to drive described solid particle, thereby realize phase mutual friction and the collision of this solid particle.

9. the dynamic thermal stability determinator of solid particle according to claim 8, it is characterized in that, described motion is rotating cylinder (6), described heating arrangements comprises heating furnace (12), wherein, described heating furnace (12) arranges on position-adjustable ground each other with described rotating cylinder (6), so that described rotating cylinder (6) can be positioned at described heating furnace (12) or be positioned at the outer and space of described heating furnace (12).

10. the dynamic thermal stability determinator of solid particle according to claim 9, it is characterized in that, this device also comprises frame (1) and rotating shaft (11), and this rotating shaft is horizontally disposed with and is installed on the described frame (1), and described rotating cylinder (6) is installed on the end of described rotating shaft (11).

11. the dynamic thermal stability determinator of solid particle according to claim 10, it is characterized in that, described actuating mechanism is electric rotating machine (8), described rotating shaft (11) is provided with first gear (9), the output shaft of described electric rotating machine (8) is provided with second gear (10), forms the external toothing transmission between described first gear (9) and second gear (10).

12. the dynamic thermal stability determinator of solid particle according to claim 10, it is characterized in that, described heating furnace (12) comprises body of heater and wing furnace door (7), this wing furnace door (7) is sleeved in the described rotating shaft (11), along on the central axial direction of described rotating shaft (11), wherein being installed on the base (2) of described dynamic thermal stability determinator with respect to another person in the body of heater of described heating furnace (12) and the described wing furnace door (7) position-movablely.

13. the dynamic thermal stability determinator of solid particle according to claim 12, it is characterized in that, this device also comprises the linear electric machine (14) that links to each other with the body of heater of described heating furnace (12), and this linear electric machine (14) is used for moving described body of heater along the central axial direction of described rotating shaft (11).

14. the dynamic thermal stability determinator of solid particle according to claim 13 is characterized in that, the bottom of described body of heater is provided with drag chain (13).

15. the dynamic thermal stability determinator of solid particle according to claim 12, it is characterized in that, this device comprises the slip lid (3) that is movably connected on the described frame (1), the body of heater of described heating furnace (12) is arranged on the described base (2) movably, and described body of heater has first make-position and second make-position at moving direction, wherein:

In described first make-position, described body of heater engages with wing furnace door (7) and described rotating cylinder (6) is contained in the described heating furnace (12), and described slip lid (3) is positioned at the top of described body of heater;

In described second make-position, described body of heater separates with wing furnace door (7) and described rotating cylinder (6) is positioned at outside the described heating furnace (12), and described slip lid (3) can turn to open side and closed this body of heater of described body of heater around described frame (1).

16. the dynamic thermal stability determinator of solid particle according to claim 15, it is characterized in that, the inwall of described body of heater is provided with the support bar (15) that protrudes towards described rotating shaft (11), be formed with the groove that matches with described support bar (15) on the outer wall of described rotating cylinder (6), in described first make-position, described support bar (15) is inserted in the described groove.

17. the dynamic thermal stability determinator of solid particle according to claim 12, it is characterized in that, described heating arrangements also comprises draft tube (4) and the gas outlet (5) that is connected on the described rotating cylinder (6), one end of described draft tube (4) connects described thermal source gas, and the other end and described gas outlet (5) all are communicated to the inner cavity chamber of described rotating cylinder (6).

18. the dynamic thermal stability determinator of solid particle according to claim 17, it is characterized in that, this device also comprises mounting sleeve (16), this mounting sleeve (16) fixed cover is located in the described rotating shaft (11), described rotating cylinder (6) comprises rotating cylinder portion (61) and fixed installation portion (62), described rotating cylinder portion (61) is installed on described rotating shaft (11) and upward and with described fixed installation portion (62) links to each other, described fixed installation portion (62) is installed in the end of described mounting sleeve (16), described draft tube (4) and gas outlet (5) are connected respectively in the described fixed installation portion (62), are formed with the gas channel that is communicated to inner cavity chamber of described rotating cylinder portion (61) from described draft tube (4) and gas outlet (5) in wherein said rotating cylinder portion (61) and the fixed installation portion (62).

19. the dynamic thermal stability determinator of solid particle according to claim 18, it is characterized in that, described gas channel comprises the air inlet circuit, the exhaust circuit, roof air flue and diapire air flue, described air inlet circuit and exhaust circuit are arranged on described rotating cylinder portion (61) and the first side wall (20) that described fixed installation portion (62) links to each other, described roof air flue and diapire air flue are separately positioned on the roof of described rotating cylinder portion (61) and the diapire and with the inner cavity chamber of described rotating cylinder portion (61) and are communicated with, described air inlet circuit is communicated with described draft tube (4) respectively, roof air flue and diapire air flue, described exhaust circuit are communicated with inner cavity chamber and the described gas outlet (5) of described rotating cylinder portion (61).

20. the dynamic thermal stability determinator of solid particle according to claim 19, it is characterized in that, described the first side wall (20) comprises first potsherd (17), this first potsherd is embedded in this first side wall (20) to be used for filtering gas, and is formed with described air inlet circuit and exhaust circuit on described first potsherd (17).

21. the dynamic thermal stability determinator of solid particle according to claim 20, it is characterized in that, described fixed installation portion (62) comprises second potsherd (18) for filtering gas, this second potsherd is embedded in this fixed installation portion (62) and with described first potsherd (17) and fits, described second potsherd (18) is provided with intake interface (A) and the exhaust port (B) that is communicated with described air inlet circuit and exhaust circuit respectively, and this intake interface (A) is connected described draft tube (4) and gas outlet (5) respectively with exhaust port (B).

22. the dynamic thermal stability determinator of solid particle according to claim 19 is characterized in that, cooperates for keyway between described the first side wall (20) and the described rotating shaft (11).

23. the dynamic thermal stability determinator of solid particle according to claim 19 is characterized in that, described the first side wall (20) is removably installed between the roof and diapire of described rotating cylinder portion (61).

24. the dynamic thermal stability determinator of solid particle according to claim 18, it is characterized in that, described wing furnace door (7) and described rotating cylinder (6) are installed on the described mounting sleeve (16) at interval, be provided with abutment sleeve (19) between described wing furnace door (7) and the rotating cylinder (6), described mounting sleeve is formed with stage portion on (16), and the both sides of described wing furnace door (7) are resisted against respectively on described stage portion and the described abutment sleeve (19).

25. the dynamic thermal stability determinator of solid particle according to claim 24, it is characterized in that, described wing furnace door (7) is provided with through hole, and described draft tube (4) and gas outlet (5) pass described through hole and be connected on the described rotating cylinder (6).

26. the dynamic thermal stability determinator of solid particle according to claim 24, it is characterized in that, this device also comprises compression spring device (21), the two ends of this compression spring device are biased in respectively on described frame (1) and the described mounting sleeve (16), with towards the described wing furnace door of the direction pushing tow of described body of heater (7).

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