CN102952586A - Gasification of carbonaceous material - Google Patents
Gasification of carbonaceous material Download PDFInfo
- Publication number
- CN102952586A CN102952586A CN2012103030387A CN201210303038A CN102952586A CN 102952586 A CN102952586 A CN 102952586A CN 2012103030387 A CN2012103030387 A CN 2012103030387A CN 201210303038 A CN201210303038 A CN 201210303038A CN 102952586 A CN102952586 A CN 102952586A
- Authority
- CN
- China
- Prior art keywords
- rotatable
- gasifier
- grid
- grid component
- key formula
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
- F23H17/08—Bearers; Frames; Spacers; Supports
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/34—Grates; Mechanical ash-removing devices
- C10J3/40—Movable grates
- C10J3/42—Rotary grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H9/00—Revolving-grates; Rocking or shaking grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H9/00—Revolving-grates; Rocking or shaking grates
- F23H9/02—Revolving cylindrical grates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/09—Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H2700/00—Grates characterised by special features or applications
- F23H2700/005—Rotary grates with vertical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H2700/00—Grates characterised by special features or applications
- F23H2700/009—Grates specially adapted for incinerators
Abstract
The present invention relates to GASIFICATION OF a CARBONACEOUS MATERIAL, and discloses a grate assembly 10 for a gasifier for gasifying carbonaceous material producing ash includes an upper rotatable grate component 11 and a lower rotatable support structure 12 fastened to the upper rotatable grate component by a plurality of removable fasteners 15 acting to prevent vertical displacement of the upper rotatable grate component and the lower rotatable support structure. The lower rotatable support structure is configured to be drivingly rotated about a common vertical axis of rotation 21 shared with the upper rotatable grate component. The assembly 10 further includes at least two key torque transmitters 16 spaced angularly relative to the common axis of rotation and engaging the upper rotatable grate component and the lower rotatable support structure to transfer torque from the lower rotatable support structure to the upper rotatable grate component when the lower rotatable support structure is driven.
Description
Technical field
The present invention relates to the gasification of carbonaceous material.Especially, the present invention relates to for the grid component of the gasifier that carbonaceous material is gasified and relate to for the gasifier that carbonaceous material is gasified.
Background technology
For some gasifiers, such as
FBDB
TMGasifiers etc. need intermittently or loading and unloading particulate material continuously, such as particulate carbonaceous material (for example, coal) and grey etc.Therefore, for example, at the boosting type gasifier (for example, fixed bed dry bottom formula gasifier) in the situation, for example the microgranular carbon raw material of coal is loaded onto in the gasification chamber of gasifier to form bed (in the situation of fixed-bed type gasifier), and gasify under high temperature and high pressure, after gasification, any residual not gasification materials is removed from gasifier via rotatable grid component and ash lock (ash lock) as ash.
Grid component has two main mechanical functions.At first be to extract ash for the bottom from gasification chamber, but also be used for pulverizing and removing any grey agglomerate (slag) that may form in gasification.Grid component also is used for vaporized chemical (the normally mixture of steam and oxygen) is assigned to the carbonaceous material bed.
Grid component comprises a plurality of members, and these a plurality of members mainly are: the rotatable grid members in the top of general conical; The rotatable supporting structure in below, its upper periphery place of rotatable supporting structure with above rotatable grid members be permanently connected; And ring gear, its place, following peripheral in described rotatable supporting structure connects.Be provided with below fixed support structure, rotating parts is supported on the fixed support structure of below.In use, when being connected with transmission case assembly via electric motor when the rotatable supporting structure in below drives the ring gear that is connected and drives, the grid component rotation, wherein transmission case assembly makes the rotating parts rotation of grid component.
In the grid component of prior art, a plurality of bolts that rotatable grid members utilization is arranged in respective bolt holes are fixedly connected with rotatable supporting structure with the single key formula torque transmitter that is arranged in corresponding keyway.The purpose of joint bolt is to prevent that the rotatable grid members in top from carrying out vertically separating with the rotatable supporting structure in below.In use, key is as the torque transmitter between the adjacent members, in order to from ring gear motivating force is delivered to the rotatable grid members in top by the rotatable supporting structure in below.In the grid component of prior art, single key is as torque transmitter.Under being designed to nonserviceable, bears on key whole radial loads or the shearing force that grid component stands.It has been generally acknowledged that in the prior art: in use, single key always is positioned at before other key and will carries whole radial loads or shearing force, and it is unnecessary therefore to use a plurality of keys to be considered to be.
Have been found that: in use, joint bolt and sometimes key this under the malfunction that rotating freely of grid component hindered, produce fault.Exist and rest in the situation in the ash discharge ring-shaped article that limits between the wall of rotatable grid members and gasification chamber at hard grey agglomerate (slag), state may break down.In this case, rotating freely of the rotatable grid members in top is restricted, and electric motor and ring gear continuation are rotated and acted on the rotatable supporting structure in below.Understandablely be, in this case, moment of torsion on the rotatable grid members increases, and is carried by key formula torque transmitter from the load wheel box transmission, that arrive the rotatable supporting structure in below and arrive the rotatable grid members in top by ring gear.Because key is designed to tolerate the radial force that is associated with malfunction (in this state, rotating freely of the rotatable grid members in top is obstructed), so the fault of joint bolt is unexpected fault.In use, in fact joint bolt is subject to the protection of key and therefore is not designed to carry any tangential shearing force that is associated with malfunction.
When joint bolt was subject to shearing, the rotatable grid members in top produced with the rotatable supporting structure in below and separates, and grid component no longer can be removed ash from gasifier.This apparently, does not expect that this situation occurs, because may have a strong impact on the income that production level and gasifier produce like this so that gasifier is stopped work.Therefore, the design of prior art will be so that the operation poor efficiency will be useful and reduce this poor efficiency.
For the functional fault that the fault that reduces by joint bolt causes, attempt to use more greatly and/or stronger joint bolt.Not being in the appropriate location because believe firmly key to produce displacement is the major cause that causes the joint bolt fault, so also attempt key is welded on two transoms (that is, rotatable grid members and rotatable supporting structure).Yet in practice, it is unsuccessful that two kinds of methods have been proved the functional fault that reduces aforesaid grid component.
Studies show that: the fault section ground under grid component is nonserviceabled be since joint bolt and key formula torque transmitter with rotatable grid members be connected the design defect of this mode that supporting structure connects.Be surprised to find: consider the load of the dynamic mechanically in the grid component during nonserviceabling, introduce relatively moving between rotatable grid members and the rotatable supporting structure, namely, a member (normally rotatable supporting structure) continues rotation, and another member in the assembly (normally rotatable grid members) keeps static, and the rotation of this another member is subject to the obstruction of the grey agglomerate that captures in the ash discharge ring-shaped article.In this case, the relative rotation around key formula torque transmitter has occured, that is, the rotation of rotatable grid members is subject to the obstruction of the grey agglomerate in the ash discharge ring-shaped article, and therefore rotatable grid members pivots round key formula torque transmitter.
In operation, it is vital the rotation of the rotating parts of two connections being overlapped.Adjacent members causes joint bolt to produce displacement with respect to respective bolt holes generation displacement and key with respect to keyway around relatively moving of key.This causes the rotation of a rotating member to produce displacement.The displacement of rotation causes the shear-stress on the joint bolt to increase gradually, finally causes joint bolt to produce fault.Because joint bolt can not prevent relatively moving of two adjacent members, separate so the rotating parts of grid component produces, thereby cause the function of grid component to produce fault.
In research process, be surprised to find: the fault of joint bolt be not since vertical plane (namely, the plane substantially parallel with the rotation of grid component) undercapacity of joint bolt causes in, but because rotatable grid members causes that around the relative rotation of key formula torque transmitter in the horizontal plane (that is, with the substantially vertical plane of rotation) misregistration of rotatable grid members and rotatable supporting structure causes.
WO 2006/061738 attempts to overcome following problem: the agglomeration problems that is fed to the fine coal raw material in the fixed-bed type coal gasifier, this problem causes gasifier operation unstable, and because the problem of " focus " that the heterogeneous body coal bed that preferential air flow stream is crossed above-mentioned formation causes.The document discloses the working method for the fixed-bed type gasifier and the fixed-bed type gasifier that overcome the problems referred to above.This gasifier has: static coal distribution device, and its gasification chamber that is positioned at gasifier is inner; And rotatable grid, it has at least one finger that projects upwards of the ash outlet top that is positioned at gasification chamber.What the document was advocated is: static coal distribution device and can improve coal in the coal fixed bed and the radial and axial distribution of grey particulate with the combination of the rotatable grid members of outstanding finger, thus make the coal fixed bed evenly and improve operation and the stability of gasifier.WO 2006/061738 has described two optional grid components that are applicable to realize described target.Mention following problem without any the place in WO 2006/061738: misregistration, upper grid members and the Under The Grille member between upper grid members and the Under The Grille member centers on the relative rotation of key formula torque transmitter or because the shearing of the joint bolt between upper grid members and the Under The Grille member causes the grid component functional fault.In fact, WO 2006/061738 related problem is different from problem involved in the present invention fully.
CN 201762288 is Chinese utility models and relates to common stream, air blowing, fixed-bed type biomass gasifier.The biomass gasifier of CN 201762288 described prior aries has body of heater, grey chamber, grid, strut member and ash exhauster.Grid is the flat structures that flatly is installed on the stove below.Grid has a plurality of holes of extending perforation thereon, to allow that inflammable gas and lime-ash are by a plurality of holes.CN 201762288 has determined a plurality of problems relevant with the prior art grid, these a plurality of problems especially comprise: (i) ash accumulates on the grid, thereby cause the efficient of gasifier low, (ii) ash stops up the hole in the grid, thereby stop inflammable gas to leave body of heater by described hole, and then inhibition gas yield, (iii) the hole in the grid causes material to leak, and (iv) because the hole size difference of dissimilar grids is to be suitable for the gasification of dissimilar biomass, the therefore existing grid utmost point is unsuitable for the gasification of all kinds biomass.Therefore optional gasifier has been proposed, and shown in Fig. 2 to Figure 13 of CN 201762288.Although existing member (13) is called grid in the gasifier that proposes among the CN 201762288, this member is not the rotatable grid on the conventional meaning, and is actually the stationary installation that is positioned at the body of heater below.Grid (13) is designed to support from the derive ash that obtains and allow that inflammable gas and the lime-ash that produces pass the hole in the grid (13) body of heater of biomass bed, but obvious most of lime-ash is to discharge by the ash discharge ring-shaped article between grid (13) and the inboard wall of furnace body.Grey stirring mechanism is set, to stir the ash collected at grid (13) top and ash is pushed in the ash discharge ring-shaped article.Therefore, grey stirring mechanism is unique complete rotatable members in any biomass gasifier of describing among the CN201762288.CN 201762288 has further described following content: advantageously can regulate the size in the hole in the grid (13), thereby make biomass gasifier can be suitable for all kinds gasifying biomass.CN 201762288 discloses following content: a kind of method of regulating the size in the hole on the grid (13) provides a kind of adjustable plate (19), this adjustable plate (19) has the structure with grid (13) basic simlarity, namely, for plate-like and be furnished with a plurality of holes of perforation, with the coaxial installation of grid (13) in the body of heater and be installed on grid (13) below.Adjustable plate (19) can rotate in restricted portion, so that: at the first location place, adjustable plate (19) is located so that hole (13a) and hole (19a) is overlapping with respect to grid (13), extend a plurality of passages that connect two members (13) and (19) thereby limit, perhaps second or the follow-up location place, adjustable plate (19) can rotate so that hole (19a) and hole (13a) is not overlapping (namely slightly with respect to grid (13), setover), thus effectively reduce to extend perforation grid (13) and the hole of adjustable plate (19) or the size of passage.In this way, can regulate the effective dimensions in the hole (13a) in the grid (13) of the biomass gasifier of CN201762288, so that only by making adjustable plate (19) slightly just rotate and in this gasifier, to gasify to various types of biomass with respect to grid (13).In order to limit adjustable plate (19) relatively moving with respect to grid (13), CN 201762288 has described from the outstanding a plurality of arc drip moldings (29) in the bottom surface of grid (13), and arc drip molding (29) is inserted into the complementary arc-shaped depression portion (28) that is arranged in the formation slit on the following adjustable plate (19) of grid (13).By the projection on the bottom side of grid (13) (29) being assembled in the complementary recess (28) that is arranged on adjustable plate (19) top, allow adjustable plate (19) rotatablely moving limitedly with respect to stationary grizzly (13).Therefore, four arc convex (29) are not as key formula torque transfer member.Included projection (29) and recess (28) are only for the counterrotating scope between the relative rotation between guiding stationary grizzly (13) and the rotatable adjustable plate (19|) and restriction stationary grizzly (13) and the rotatable adjustable plate (19|).In any case projection (29) is not transmitted any moment of torsion.
Summary of the invention
According to an aspect of the present invention, provide a kind of grid component of the gasifier for the carbonaceous material that produces ash is gasified, described grid component comprises:
The rotatable grid members in top; And
The rotatable supporting structure in below, it is fastened on the rotatable grid members in described top by a plurality of removable fastening pieces, described a plurality of removable fastening piece is used for preventing the vertical displacement of the rotatable supporting structure of the rotatable grid members in described top and described below, the rotatable supporting structure in described below is constructed to drive the ground rotation around the common vertical rotation that shares with the rotatable grid members in described top
Described grid component also comprises at least two key formula torque transmitters, described at least two key formula torque transmitters with respect to described common vertical rotation be ground, angle spaced apart and with the rotatable engaged by support structure of the rotatable grid members in described top and described below, moment of torsion rotatable supporting structure below described is passed to so that rotatable supporting structure is driven below described described above rotatable grid members.
In this manual, term " member " is intended to comprise the assembled component that includes more than a part, such as comprising the rotatable grid members etc. that a plurality of assembling parts is formed grid members.
The contriver is surprised to find: a plurality of bond energys are set enough alleviate the functional fault that the prior art grid component stands.Therefore, included a plurality of keys not only are intended to be understood the situation as strengthening grid component according to the present invention, but in order to keep the geometry globality of grid component.
Key can equal angles ground spaced apart.Therefore, for example, when only having two keys, but about 180 ° of two key intervals, when having three keys, but about 120 ° of three key intervals, and when four keys of existence, about 90 ° of four key intervals.Yet, the layout of key because structure constraint factors such as () positions that other member is set and and asymmetric, therefore, the layout of key can be setovered slightly, for example is 170 °, rather than 180 °.Therefore, in this manual, " equal angles " is intended to represent that differential seat angle is not more than 30 °, preferably is not more than 10 °, more preferably is not more than 5 °.
Preferably, it is one group many groups that key is arranged as two keys, and two keys in a group are positioned at radially relative position place around described common vertical rotation.
Key can be arranged to a circle, and can be spaced apart by at least one fastening piece between the adjacent key, and described fastening piece is used for suppressing or preventing the vertical displacement of the rotatable supporting structure of the rotatable grid members in described top and described below.Described fastening piece can be arranged as the form of nuts and bolt.
Typically, key is without screw thread and be not used in the vertical displacement that suppresses or prevent the rotatable supporting structure of the rotatable grid members in described top and described below.
Preferably, key is not cylindrical.
Key can form from wider operated upper end to narrower operated lower end convergent, and perhaps vice versa.
Key can be for microscler and can have polygonal profile in end view, and is for example, square.Should be understood that end view is along the direction intercepting of the longitudinal axis of the key of elongation.
The comparable fastening piece of key is firm, so that the shank of fastening piece has the maximum transverse size less than the smallest lateral dimension of key.
Rotatable grid members can have upwards and the outside surface of inside convergent.When observing in vertical cross-section, upwards and inwardly the outside surface of convergent can interlock or become step shape, limits vertical and radially spaced stage.This stage can cover to protect rotatable grid members to avoid the destruction of caustic material (for example, ash) by shielding slab.
According to a further aspect in the invention, a kind of gasifier for carbonaceous material is gasified is provided, described gasifier comprises aforesaid grid component, described grid component is installed in the gasification chamber that is limited by the gasification vessel, and the rotatable supporting structure in the below of described grid component is connected with drive unit.
Gasifier can be fixed-bed type gasifier, especially fixed bed dry bottom formula gasifier.
Gasifier can be coal, waste material or biomass gasifier, and perhaps gasifier is configured to the two or more gasifiers that are combined into promoting the circulation of qi in coal, waste material and the biomass.Yet, typically, the coal gasifier of described gasifier under the high temperature between the high pressure between 5 bar (g) and 100 bar (g) and 400 ℃ and 1600 ℃, working
Typically, rotatable grid members is configured to have vertical dimension and radial dimension, and the vertical axis rotation that can export around the ash discharge of gasification chamber, and the following peripheral of rotatable grid members is positioned at the top of rotatable grid members or the below of upper end.
In one embodiment of the invention, in use, grid members is around the vertical axis rotation of described ash discharge outlet.With carbon raw material for example coal be fed in bulk the top of gasifier, and the vaporized chemical outlet of the lower rim below of the external shield plate of vaporized chemical by being positioned at rotatable grid members is fed to the bottom of the reaction zone that the gasification vessel limit, thereby the coal of the slow moving-bed that is arranged in gasification chamber is gasified.Extract continuously ash by the ring-type ash discharge path that between the wall of gasification chamber and rotatable grid members, arranges out from the bottom of gasification chamber.Plough and the rotatable grid members that continues in operation to rotate are rigidly connected, and plough is wiped the ash by described ash discharge path off, and after this ash inflow under action of gravitation is arranged in the ash lock below the gasifier vessel.Along with grid component rotation, at the shielding slab of rotatable grid members with between the abrasive brick on the wall of gasifier vessel, carry out slag and pulverize.
Description of drawings
The present invention will be described by example now with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 shows the vertical sectional view according to grid component of the present invention, and grid component is installed on according in the fixed bed dry bottom formula coal gasifier of the present invention;
Fig. 2 shows the orthographic plan of the rotatable supporting mechanism in below of the grid component of Fig. 1;
Fig. 3 shows the counterrotating orthographic plan of the supporting structure of nonserviceable in the grid component of expression the prior art grid members of lower rotation and rotation; And
Fig. 4 shows expression according to the orthographic plan of the rotation of grid component of the present invention.
Embodiment
With reference to the Fig. 1 in the accompanying drawing, Reference numeral 10 generally refers to according to grid component of the present invention, and this grid component is installed in the gasification vessel 100 according to fixed bed dry bottom formula coal gasifier of the present invention.Gasification vessel 100 limit gasification chamber 102, and grid component 10 is positioned at gasification chamber 102.Gasification chamber 102 has wall 18.
Rotating parts 11,12,13 fixed support structures 14 by the ash discharge outlet that is positioned at gasification vessel 100 or path 20 tops support.The radially outermost peripheral of the rotatable grid members 11 in top is connected with one or more ploughs 17.Plough 17 is used for scraping ash disposal by ash discharge ring-shaped article 19 from the ash bed in the gasification chamber 102, and this ash discharge ring-shaped article 19 is limited between the wall 18 of the neighboring of the rotatable grid members 11 in top and gasification chamber 102.
In use, grid component 10 is around rotation 21 rotations, and this rotation 21 is corresponding with the medullary ray of ash discharge path 20, and the medullary ray of ash discharge path 20 also is the medullary ray of grid component 10.Coal is fed to the top of gasifier (not shown) in bulk, and the vaporized chemical outlet 23 of the lower rim below of vaporized chemical by being arranged in external shield plate 22 is fed to the bottom of gasification chamber 102, thereby the coal of the slow moving-bed that is arranged in gasification chamber 102 is gasified.Extract constantly ash by being arranged at as the wall 18 of a side gasification chamber 102 with as the ash discharge ring-shaped article 19 between the rotatable grid members 11 in the opposing party's top and by ash discharge path 20 out from the bottom of gasification chamber 102.Narrow formula scrapes 17 with rotatable grid members 11 rotations in top, thereby discharges ash by scraping ash disposal via ash discharge ring-shaped article 19.Along with rotatable grid members 11 rotations in top, carry out up slag between the wall 18 of the shielding slab 22 of rotatable grid members 11 and gasifier chamber 102 and pulverize.
With reference to Fig. 2 of accompanying drawing, show the orthographic plan of rotatable supporting structure 12 of the grid component 10 of Fig. 1.The a plurality of bolt (not shown) corresponding with a plurality of bolt hole 21 are used for the rotatable grid members 11 in top and the rotatable supporting structure 12 in below regularly but be connected removedly.Bolt is designed to connect vertically adjacent member 11 and 12, and is not designed to bear radial shear power.Be provided with at least two complete relative keyways 22, (not shown) closely is positioned with corresponding key in this keyway 22.Key is designed to serve as torque transmitter, and this torque transmitter is sent to top rotatable grid members 11 from electric motor and wheel box (not shown) via ring gear 13 and rotatable supporting structure 12 with motivating force.
In use, grey agglomerate clamp-on as shown in Figure 1 above in the situation of ash discharge ring-shaped article 19 between rotatable grid members 11 and the vessel wall 18, state may break down.Grid component 10 is designed to the agglomerate of clamp-oning in the ash discharge ring-shaped article 19 is pulverized.Yet such situation may occur: namely, agglomerate is can not be easily broken and remove via ash discharge ring-shaped article 19 and ash discharge path 20, and the rotation of the rotatable grid members 11 in top is hindered.In this case, ring gear 13 continues to drive and the rotatable supporting structure 12 that is fixedly connected with the rotatable grid members 11 in top is rotated.Revolving force is sent to rotatable grid members by the key formula torque transmitter that is arranged in above-mentioned keyway 22.
Studies show that: when only using a key formula torque transmitter, in the situation that the rotation of rotatable grid members 11 is restricted up, the relative rotation of the key in the keyway 22 occurs to center on, that is, the key that is tending towards in the keyway 22 of the rotation rotatable grid members 11 in top that is subject to the restriction of grey agglomerate pivots.Two adjacent members 11,12 cause joint bolt with respect to the displacement with respect to keyway 22 of the displacement of the bolt hole 21 of correspondence and key around relatively moving of key.This causes being labeled as among Fig. 3 of accompanying drawing the displacement of the rotation of A and B.
In Fig. 3, sense of rotation is by arrow 30 expressions.The rotation profile of stationary member (that is, the rotatable grid members 11 in top) probably is shown as Reference numeral 110.The key (not shown) is arranged in keyway 22.The rotation profile of rotating member (that is, rotatable bracing member 12) probably is shown as Reference numeral 120.The rotation of profile 110 is shown an A, and the rotation of profile 120 is shown a B.
The contriver finds: in operation, it is essential that the rotation A of rotatable grid members and B overlap, that is, some A and B are overlapping along common rotation axis 21 as shown in Figure 1.It is lower to nonserviceable, and the rotation that is represented by a B becomes and departs from common rotation axis 21, and is therefore no longer overlapping with the rotation that is represented by an A.Because the relative rotation that bracing member 12 centers on the key in the keyway 22 causes a B to produce displacements from rotation center axis 21, so the shearing force that causes acting on the joint bolt that is arranged in bolt hole 22 increases gradually.Along with joint bolt causes fault thus, the zone that can be used for the motivating force of transmission ring generating gear 13 dwindles, and the result is that joint bolt still less comes bearing load, finally causes whole joint bolts to produce fault.Because joint bolt can not prevent the rotating parts 11 of two connections and 12 relatively move, the rotating parts 11 of grid component 10 and 12 forms and separates, thereby causes the functional fault of grid component 10.
Fig. 4 shows the figure according to rotatable grid members 11 of the present invention, 12 rotation profile.The introducing that is arranged in the extra symmetrical space key of corresponding keyway 22 has prevented any displacement of rotation, and the displacement of rotation is the FAQs of prior art grid component, in the grid component of prior art, single key and keyway 22 are arranged between the rotatable grid members 11 in top and the rotatable supporting structure 12 in below.Therefore, comprise that the structure of one or more groups key provides: overlapping by the rotation that an A and B represent even under malfunction mentioned above, overlap with axis 21.
Preferably, substantially fully one group of key (that is, two keys) of relative spacing ground layout can be used each other, more preferably, two groups of keys (that is, four keys) can be used.Each is organized key and arranges on basic relative spacing ground each other, arranges so that key centers on the peripheral basic vertical and equal angles compartment of terrain of the rotatable supporting structure 12 that is connected with the rotatable grid members 11 in top.Up the rotatable supporting structure 12 in rotatable grid members 11 and below be not in the situation about consisting of of the segmentation by equal amount (normally, by three or more segmentations are joined together the member of constructing grid component 10 with constituent part), the minimum key of each segmentation is acceptable.
In use, extra key will provide extra connection and torque-transmitting mechanisms, and this will prevent that rotation A and B from producing relative displacement.Displacement by reducing rotation A and B prevents that to keep them coaxial with axis 21 rotary load is sent on the joint bolt, and finally avoids the rotating parts 11 that connects and 12 separate and the functional fault of grid component 10.
Therefore, as shown in the figure, grid component 10 of the present invention provides following effect: production loss reduces because plant factor is larger, and owing to the functional fault to grid component keeps in repair required maintenance minimizing so that running cost reduces.In addition, advantageously, technical scheme provided by the present invention is retrofitted into existing installation only needs small change.In other words, existing grid component being retrofited to obtain advantage of the present invention is to realize by existing installation is carried out relatively small change.
Claims (15)
1. grid component that is used for gasifier that the carbonaceous material that produces ash is gasified, described grid component comprises:
The rotatable grid members in top; And
The rotatable supporting structure in below, it is fastened on the rotatable grid members in described top by a plurality of removable fastening pieces, described a plurality of removable fastening piece is used for preventing the vertical displacement of the rotatable supporting structure of the rotatable grid members in described top and described below, the rotatable supporting structure in described below is constructed to drive the ground rotation around the common vertical rotation that shares with the rotatable grid members in described top
Described grid component also comprises: at least two key formula torque transmitters, described at least two key formula torque transmitters with respect to described common vertical rotation be angle ground spaced apart and with the rotatable engaged by support structure of the rotatable grid members in described top and described below, moment of torsion rotatable supporting structure below described is passed to so that rotatable supporting structure is driven below described described above rotatable grid members.
2. grid component according to claim 1, wherein,
Equal angles ground is spaced apart in a horizontal plane around described common vertical rotation for described key formula torque transmitter.
3. grid component according to claim 1 and 2, wherein,
Be provided with two key formula torque transmitters, and spaced apart 170 ° to 190 ° of described two key formula torque transmitters.
4. grid component according to claim 1 and 2, wherein,
Be provided with three key formula torque transmitters, and spaced apart 110 ° to 130 ° of described three key formula torque transmitters.
5. grid component according to claim 1 and 2, wherein,
It is one group many groups that described key formula torque transmitter is arranged as two key formula torque transmitters, and described two key formula torque transmitters of one group are positioned at radially relative position place around described common vertical rotation.
6. the described grid component of each claim in 5 according to claim 1, wherein,
Described key formula torque transmitter is arranged to a circle and spaced apart by at least one fastening piece between the adjacent key formula torque transmitter, and described fastening piece is used for suppressing or preventing the vertical displacement of the rotatable supporting structure of the rotatable grid members in described top and described below.
7. grid component according to claim 6, wherein,
Described fastening piece is the form of nut bolt structure.
8. the described grid component of each claim in 7 according to claim 1, wherein,
Described key formula torque transmitter is without screw thread and be not used in the vertical displacement that suppresses or prevent the rotatable supporting structure of the rotatable grid members in described top and described below.
9. grid component according to claim 8, wherein,
Described key formula torque transmitter forms from wider operated upper end to narrower operated lower end convergent.
10. grid component according to claim 1, wherein,
Described key formula torque transmitter has microscler polygonal profile in end view.
11. one kind for the gasifier that carbonaceous material is gasified, described gasifier comprises according to claim 1 the described grid component of each claim in 10, described grid component is installed in the gasification chamber that is limited by the gasification vessel, and the rotatable supporting structure in described below of described grid component is connected with drive unit.
12. gasifier according to claim 11, described gasifier are the fixed-bed type gasifier.
13. according to claim 11 or 12 described gasifiers, described gasifier is fixed bed dry bottom formula gasifier.
14. gasifier according to claim 13, described gasifier are coal, waste material or biomass gasifier, perhaps described gasifier is configured in coal, waste material and the biomass two or more are combined into the gasifier of promoting the circulation of qi.
15. gasifier according to claim 14, the coal gasifier of described gasifier under the high temperature between the high pressure between 5 bar (g) and 100 bar (g) and 400 ℃ and 1600 ℃, working.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1114700.6 | 2011-08-25 | ||
| GB1114700.6A GB2493957A (en) | 2011-08-25 | 2011-08-25 | Grate assembly for a gasifier with at least two key torque transmitters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102952586A true CN102952586A (en) | 2013-03-06 |
| CN102952586B CN102952586B (en) | 2015-09-09 |
Family
ID=44838708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210303038.7A Expired - Fee Related CN102952586B (en) | 2011-08-25 | 2012-08-23 | The gasification of carbonaceous material |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140230702A1 (en) |
| CN (1) | CN102952586B (en) |
| AU (1) | AU2012298213A1 (en) |
| GB (1) | GB2493957A (en) |
| WO (1) | WO2013027133A1 (en) |
| ZA (1) | ZA201401180B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238445A (en) * | 2014-07-04 | 2016-01-13 | 乔治·克劳德方法的研究开发空气股份有限公司 | Rotary grate for a fixed-bed gasification reactor |
| CN108204591A (en) * | 2017-12-04 | 2018-06-26 | 北京建筑材料科学研究总院有限公司 | A kind of garbage pyrolysis gasification incinerator and method |
| CN109563992A (en) * | 2016-07-07 | 2019-04-02 | 巴布科克·威尔科克斯沃伦德有限公司 | Removable fire grate for stove |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2349755A (en) * | 1943-02-03 | 1944-05-23 | Nichols Eng & Res Corp | Furnace construction |
| WO1999010094A1 (en) * | 1997-08-21 | 1999-03-04 | Sasol Technology (Proprietary) Limited | Discharge of solid particulate material from a bulk vessel containing such material |
| CN101072851A (en) * | 2004-12-08 | 2007-11-14 | 萨松卢尔吉技术有限公司 | Fixed bed coal gasifier |
| US20100050515A1 (en) * | 2008-09-04 | 2010-03-04 | Econo-Power International Corp. | Pressurized Gasification Apparatus to Convert Coal or Other Carbonaceous Material to Gas While Producing a Minimum Amount of Tar |
| CN201762288U (en) * | 2009-10-20 | 2011-03-16 | 广州市宇联机电有限公司 | Multi-grate biomass gasification furnace |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US337849A (en) * | 1886-03-16 | heaters | ||
| US1673575A (en) * | 1926-10-19 | 1928-06-12 | John D Martin | Furnace gratt |
| US1709902A (en) * | 1927-04-07 | 1929-04-23 | Adam B Fahnestock | Apparatus for feeding and burning fuel |
| JP2005337696A (en) * | 2004-04-30 | 2005-12-08 | Wako Kikai Kogyo Kk | Incinerator |
-
2011
- 2011-08-25 GB GB1114700.6A patent/GB2493957A/en not_active Withdrawn
-
2012
- 2012-07-24 US US14/240,238 patent/US20140230702A1/en not_active Abandoned
- 2012-07-24 AU AU2012298213A patent/AU2012298213A1/en not_active Abandoned
- 2012-07-24 WO PCT/IB2012/053758 patent/WO2013027133A1/en active Application Filing
- 2012-08-23 CN CN201210303038.7A patent/CN102952586B/en not_active Expired - Fee Related
-
2014
- 2014-02-17 ZA ZA2014/01180A patent/ZA201401180B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2349755A (en) * | 1943-02-03 | 1944-05-23 | Nichols Eng & Res Corp | Furnace construction |
| WO1999010094A1 (en) * | 1997-08-21 | 1999-03-04 | Sasol Technology (Proprietary) Limited | Discharge of solid particulate material from a bulk vessel containing such material |
| CN101072851A (en) * | 2004-12-08 | 2007-11-14 | 萨松卢尔吉技术有限公司 | Fixed bed coal gasifier |
| US20100050515A1 (en) * | 2008-09-04 | 2010-03-04 | Econo-Power International Corp. | Pressurized Gasification Apparatus to Convert Coal or Other Carbonaceous Material to Gas While Producing a Minimum Amount of Tar |
| CN201762288U (en) * | 2009-10-20 | 2011-03-16 | 广州市宇联机电有限公司 | Multi-grate biomass gasification furnace |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238445A (en) * | 2014-07-04 | 2016-01-13 | 乔治·克劳德方法的研究开发空气股份有限公司 | Rotary grate for a fixed-bed gasification reactor |
| CN105238445B (en) * | 2014-07-04 | 2020-05-12 | 乔治·克劳德方法的研究开发空气股份有限公司 | Rotary grate for fixed bed gasification reactor |
| CN109563992A (en) * | 2016-07-07 | 2019-04-02 | 巴布科克·威尔科克斯沃伦德有限公司 | Removable fire grate for stove |
| CN109563992B (en) * | 2016-07-07 | 2020-09-01 | 巴布科克·威尔科克斯沃伦德有限公司 | Movable grate for a furnace |
| CN108204591A (en) * | 2017-12-04 | 2018-06-26 | 北京建筑材料科学研究总院有限公司 | A kind of garbage pyrolysis gasification incinerator and method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140230702A1 (en) | 2014-08-21 |
| CN102952586B (en) | 2015-09-09 |
| GB2493957A (en) | 2013-02-27 |
| AU2012298213A1 (en) | 2014-03-13 |
| ZA201401180B (en) | 2015-04-29 |
| GB201114700D0 (en) | 2011-10-12 |
| NZ621271A (en) | 2015-06-26 |
| WO2013027133A1 (en) | 2013-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102952586B (en) | The gasification of carbonaceous material | |
| CN101072851A (en) | Fixed bed coal gasifier | |
| KR101721823B1 (en) | Updraft gasification reactor using combustable waste and biomass resources | |
| CN101407724B (en) | Vertical combined gasification furnace for solid biomass | |
| KR20190051828A (en) | Crusher and method of operating the crusher | |
| RU2627865C1 (en) | Production method of synthetic gas from low-calorial brown coals with high-ash and device for its implementation | |
| CN109718939B (en) | Solid fuel supply pipe, crushing device and solid fuel supply method | |
| US20090007488A1 (en) | Charcoal/ash removal system for a downdraft gasifier and associated methods | |
| US20150041716A1 (en) | Rotary plough for gasifiers | |
| JP2012024652A (en) | Vertical grinder and coal/biomass-burning boiler plant equipped with the same | |
| CN203972022U (en) | A kind of gasification furnace major path slag crusher | |
| JP6607817B2 (en) | Gasification furnace device and gasification combined power generation facility | |
| JP5851884B2 (en) | Fluidized bed drying apparatus, gasification combined power generation facility, and drying method | |
| CN113969192B (en) | Centrifugal suspension fixed bed composite gasification furnace, production system and production method | |
| US20120266539A1 (en) | Method for the combined residue gasification of liquid and solid fuels | |
| CN112708470B (en) | Device and method for producing synthesis gas by multi-nozzle gasification furnace | |
| JP2007238782A (en) | Method for pyrolyzing carbonaceous raw material | |
| CN111664457A (en) | Plasma arc internal heating continuous pyrolysis device | |
| JP3220679U (en) | Burner seal box joint structure and gasifier | |
| JP2018132141A (en) | Cylinder device, slug crusher, integrated gasification combined cycle, and seal method in cylinder device | |
| JP4505422B2 (en) | Rectangular shaft type pyrolyzer | |
| CN107760378A (en) | Fixed bed and melting bed combined type catalytic coal gasification devices and methods therefor | |
| CN212390370U (en) | Plasma arc internal heating continuous pyrolysis device | |
| AU2015282414B2 (en) | A gasifier | |
| NZ621271B2 (en) | Gasification of carbonaceous material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |