CN110437885B - Water cooling system of biomass gasification furnace - Google Patents
Water cooling system of biomass gasification furnace Download PDFInfo
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- CN110437885B CN110437885B CN201910653454.1A CN201910653454A CN110437885B CN 110437885 B CN110437885 B CN 110437885B CN 201910653454 A CN201910653454 A CN 201910653454A CN 110437885 B CN110437885 B CN 110437885B
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- 238000001816 cooling Methods 0.000 title claims abstract description 136
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 238000002309 gasification Methods 0.000 title claims abstract description 33
- 239000002028 Biomass Substances 0.000 title claims abstract description 28
- 239000002893 slag Substances 0.000 claims abstract description 174
- 238000007599 discharging Methods 0.000 claims abstract description 53
- 239000003507 refrigerant Substances 0.000 claims description 54
- 238000005192 partition Methods 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 20
- 230000017525 heat dissipation Effects 0.000 description 8
- 238000012546 transfer Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- C10J3/72—Other features
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a water cooling system of a biomass gasification furnace, which comprises a fixed bed gasification furnace, a slag discharging device, a slag separating device and a water cooling circulating system, wherein the fixed bed gasification furnace is provided with a fire grate, the slag discharging device comprises a slag discharging disc, the slag discharging disc is arranged below the fire grate, the slag separating device comprises a collecting disc with a slag collecting chamber, and the collecting disc is arranged below the slag discharging disc; the water cooling circulation system comprises a primary water cooling loop and a secondary water cooling loop, the primary water cooling loop is arranged in the fire grate, and primary cooling is carried out on slag converged at the fire grate while cooling the fire grate; the secondary water cooling loop is arranged in the slag collecting chamber and used for cooling slag discharged into the collecting disc from the slag discharging disc; the primary water cooling loop and the secondary water cooling loop are communicated or not. According to the invention, the water cooling circulation system is arranged in the discharging process after the slag is formed, so that the slag is continuously cooled, the temperature of the discharged slag is effectively reduced, and the smooth discharging of the slag is facilitated.
Description
Technical Field
The invention belongs to the technical field of biomass gasification furnace equipment, and particularly relates to a water cooling system of a biomass gasification furnace, which adopts a closed water cooling structure to carry out dry slag tapping.
Background
With the development of economy and society, we are facing tremendous energy and environmental pressure. The raw materials of the biomass gasification furnace for producing the combustible gas are crop straws, forest waste and the like, and the fuel gas is a green new energy, has strong vitality, is very important renewable energy, and has the characteristics of reproducibility, low pollution, wide distribution and the like. The biomass is used as an alternative energy source, and has very important significance for reducing low carbon and emission, reducing the greenhouse effect and improving the atmosphere acid rain environment. The biomass gasification furnace utilizes biomass to perform closed anoxic combustion in the gasification furnace, and generates combustible gas after carbonization and pyrolysis and thermochemical oxidation.
When the biomass gasification furnace is used, slag needs to be cleaned regularly, the tightness of the furnace body is ensured in the slag removal process, no biogas is leaked out of the furnace body, the traditional slag removal mode is of a wet structure, the ash basin and the water seal are adopted for discharging the slag, the slag in the ash basin falls into water, and the slag is cleaned out in a mechanical slag removal mode.
The wet slag discharging mode has complex structure and high operation difficulty, and the obtained slag contains more water and is difficult to be used for the second time; in addition, a large amount of water pollution is caused in the deslagging process, and the generated black water containing more slag is difficult to treat.
Therefore, a dry slag discharging mode is proposed in the industry, for example, chinese patent literature 201420329796.0 discloses a dry slag discharging device of a biomass gasification furnace, which comprises a gasification furnace and a slag discharging mechanism positioned below the gasification furnace, wherein the bottom of the gasification furnace forms a funnel-shaped ash box, the slag discharging mechanism comprises a slag discharging guide pipe, a sleeve pipe arranged on the outer side of the slag discharging guide pipe, a screw shaft arranged in the slag discharging guide pipe and a power mechanism for driving the screw shaft to rotate, a feed inlet communicated with the ash box is arranged on the upper side of the front end of the slag discharging guide pipe, a discharge outlet is arranged on the lower side of the tail end of the slag discharging guide pipe, a circulating water cavity is formed between the slag discharging guide pipe and the sleeve pipe, and a first water outlet and a first water inlet communicated with the circulating water cavity are respectively arranged at the front end and the tail end of the sleeve pipe.
In the prior art, slag is not subjected to cooling treatment in the discharging process, the slag has higher temperature, high-temperature slag is piled together, secondary combustion is easy to generate, after discharging, re-combustion is easy to generate, and equipment is greatly damaged.
Based on the above, the application provides a water cooling system of a biomass gasification furnace.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a water cooling system of a biomass gasification furnace, which is characterized in that a water cooling circulation system is arranged in the discharge process after slag formation, so that the slag is continuously cooled, the stability of equipment is improved, the temperature of the discharged slag is effectively reduced, and the smooth discharge of the slag is facilitated.
In order to achieve the above object, the present invention provides a biomass gasification furnace water cooling system, comprising:
A fixed bed gasifier comprising a grate;
the slag discharging device is arranged at the bottom of the fixed bed gasification furnace and comprises a slag discharging disc, and the slag discharging disc is arranged below the fire grate and is used for discharging slag in the fixed bed gasification furnace;
a slag separator for collecting and discharging slag in the slag discharging device; the slag separation device comprises a collecting tray with a slag collecting chamber, and the collecting tray is arranged below the slag discharging tray; and
A water cooling circulation system;
the primary water cooling loop is arranged in the fire grate, and is used for primary cooling of slag converged at the fire grate while cooling the fire grate; the secondary water cooling loop is arranged in the slag collecting chamber and used for cooling slag discharged into the collecting disc from the slag discharging disc;
In the technical scheme of the invention, the primary water cooling loop is used for cooling the fire grate, and the fire grate needs to continuously bear higher temperature in the working process of the biomass gasification furnace, and if the fire grate is not cooled in time, the fire grate burning-through phenomenon is easily caused; compared with the traditional water-cooling grate, the primary water-cooling loop is completely arranged in the grate, is a closed water-cooling loop, is a conduction heat dissipation mode, and is suitable for dry slag discharge, and the refrigerant cannot contact with the outer surface of the grate in the process of cooling the grate.
The secondary water cooling loop is mainly used for radiating the slag collected in the slag separation device, the high-temperature slag still has higher temperature after being gathered into the slag collection chamber, the appearance of afterburning is easy to occur, in addition, the high-temperature slag can not be directly discharged to the outside, the secondary combustion is easier under the oxygen-enriched environment of the outside air, and the smooth proceeding of the working procedure is not facilitated; the closed secondary water cooling loop is arranged in the slag collecting chamber to sufficiently cool the slag, so that smooth discharge of the slag is realized.
According to another embodiment of the invention, the grate comprises a pedestal and a grate arranged on the pedestal, wherein the grate comprises a plurality of grate bars which are in tower-type structure from top to bottom, and a cooling chamber for containing cooling medium is arranged inside each grate bar.
Wherein the refrigerant in the cooling chamber can fully contact the main area of the grate, especially the main area of the outside combustion; specifically, the refrigerant may be cold water or a coolant to which a chemical agent such as an alcohol is added.
Further, the primary water cooling loop comprises a water inlet pipeline, a drainage pipeline and a water outlet pipeline, wherein the water outlet end of the water inlet pipeline is connected to the grate positioned at the top, the cooling chambers of adjacent grate are connected through the drainage pipeline, and the water outlet pipeline is arranged in the pedestal; the refrigerant flows into the grate above from the water inlet pipeline, then flows through the cooling chamber of the grate and the water drain pipeline from top to bottom in sequence, flows to the pedestal, and flows out from the water outlet pipeline.
Still further, the cooling chambers in the lower plurality of grate are arranged in a ring shape, and a through groove is formed in the center of the grate, and a water inlet pipe is arranged through the through groove, wherein the water inlet pipe is preferably arranged vertically so as to facilitate water supplementing operation of external equipment (such as a pump).
The annular cooling cavity in this scheme's structure can provide sufficient support in order to place the material at the surface of grate on the one hand, and on the other hand is convenient for assemble, in addition can also increase the area of contact of refrigerant and grate, improves radiating efficiency.
According to another embodiment of the invention, the uppermost grate is provided with a water collecting tank, into which the water outlet of the water inlet pipe extends.
According to another embodiment of the invention, two hydrophobic pipes connected to the same grate are located on both sides of the water intake pipe, respectively; in the process of flowing in the cooling chamber, the refrigerant is fully contacted with the outer wall of the cooling chamber, so that the utilization rate of the refrigerant can be effectively improved, and the heat dissipation efficiency is improved.
According to another embodiment of the invention, the slag separation device comprises a plurality of vertically arranged separation plates, the plurality of separation plates are fixed below the slag discharge tray and are positioned in the slag collection chamber, the separation plates are of hollow structures, and cooling cavities for containing cooling media are arranged in the separation plates.
In this scheme, a plurality of division boards divide into the sub-collection room of intercommunication or non-intercommunication each other with the slag collection room, and the division board is located the both sides of sub-collection room, through the mode of placing the refrigerant in the cooling chamber of division board, carries out contact cooling to the slag in each sub-collection room, and the refrigerant absorbs the heat of slag, realizes reducing the temperature of discharging the slag.
According to another specific embodiment of the invention, the collecting tray and the slag discharging tray rotate relatively, and the separating plate is not contacted with the collecting tray, wherein before the collecting tray discharges slag, the slag can be stored in the slag collecting chamber, and the separating plate synchronously rotates along with the slag discharging tray due to the rotation of the slag discharging tray relative to the collecting tray, at the moment, the separating plate can extrude the slag to form rotary motion, and in the rotary process, larger slag can be extruded to form smaller slag particles, so that the phenomenon of re-burning of the large slag is avoided, and the smaller slag particles can be more fully contacted with the outer side surface of the separating plate, so that the effect of heat dissipation and cooling of the slag is further improved.
The separation plate has a certain thickness, can store a certain amount of refrigerant, and can freely discharge and replace the refrigerant.
According to another embodiment of the invention, the secondary water cooling circuit comprises a plurality of connecting pipes, and the cooling cavities in the plurality of partition plates are mutually communicated through the connecting pipes.
Further, the connecting pipeline is arranged close to the inner peripheral side wall and/or the outer peripheral side wall of the slag collecting chamber, and the connecting pipeline synchronously rotates along with the partition plate in the process that the partition plate rotates relative to the collecting plate.
According to another specific embodiment of the invention, the collecting disc is disc-shaped, a plurality of partition plates are arranged at intervals in the radial direction of the collecting disc, the cooling chamber is provided with a refrigerant inlet and a refrigerant outlet, the two ends of the partition plates in the radial direction are respectively a near-center end and a far-center end, and the refrigerant inlet and the refrigerant outlet are respectively arranged at the near-center end and the far-center end.
Specifically, the positions of the refrigerant inlets and the refrigerant outlets of different partition plates are the same or different, and the refrigerant inlets and the refrigerant outlets are respectively communicated to different connecting pipelines.
Preferably, the refrigerant inlet is disposed not lower than the refrigerant outlet in the vertical direction.
According to another embodiment of the invention, the number of separating plates is 2-8, for example 5, still for example 6.
In the invention, the primary water-cooling loop and the secondary water-cooling loop are closed water-cooling loops, and preferably, the primary water-cooling loop and the secondary water-cooling loop can be mutually communicated or not mutually communicated, for example, the refrigerant discharged from the primary water-cooling loop can directly flow into the secondary water-cooling loop or directly be discharged.
According to another embodiment of the present invention, a transfer pipeline (as a final cooling device) in a low-temperature environment may be further provided at the discharge port of the slag separator, the discharged slag is transported through the transfer pipeline, and cooling is performed again in the process of transferring the slag to a designated position through the transfer pipeline; preferably, the transfer pipeline has a larger section, so that the discharged slag can be better dispersed on the transfer pipeline, thereby facilitating further heat dissipation and cooling.
The invention has the following beneficial effects:
the multistage cooling loop is arranged in the invention, so that multistage cooling in the process of generating, transferring and discharging slag is realized, the refrigerant in the water cooling circulation system can not be in direct contact with the slag, and the refrigerant can be recycled;
The primary water cooling loop is of a circulating water cooling structure arranged in the fire grate, and the cooling chambers are arranged in the fire grate, so that the contact area between the refrigerant and the outer surface of the fire grate is increased, the heat dissipation area is increased, the fire grate is favorably cooled sufficiently, slag is not easy to generate a slag bonding phenomenon on the surface of the fire grate, and the primary water cooling loop is suitable for a biomass gasification furnace for dry slag discharge;
The secondary water cooling loop is of a circulating water cooling structure arranged in the slag collecting chamber, the vertically arranged partition plates have larger contact area with slag, the cooling cavity in the partition plates can cool the slag in the slag collecting process, the temperature of discharged slag is effectively reduced, the afterburning phenomenon of the slag in the collecting process is avoided, and the slag is conveniently and smoothly discharged.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a water cooling circulation system of a water cooling system of a biomass gasification furnace according to the invention;
FIG. 2 is a schematic diagram of the water cooling system of the biomass gasifier according to the invention;
FIG. 3 is a schematic view of the structure of the grate of the present invention;
FIG. 4 is a schematic diagram of a primary water cooling circuit of the present invention;
FIG. 5 is a schematic view of the distribution of the divider plate of the present invention;
FIG. 6 is a schematic diagram of another view of FIG. 5;
Fig. 7 is a top view of fig. 5.
Detailed Description
As shown in fig. 1-7, a biomass gasification furnace water cooling system comprises a fixed bed gasification furnace 1, a fire grate 2, a slag discharging device 3, a slag separating device 4 and a water cooling circulation system.
Wherein, the fire grate 2 is arranged in the fixed bed gasification furnace 1 at a position close to the bottom, the slag discharging device 3 is arranged at the bottom of the fixed bed gasification furnace 1, a slag discharging disc 31 is arranged in the slag discharging device 3, and the slag discharging disc 31 is positioned below the fire grate 2 and is used for discharging slag in the fixed bed gasification furnace 1; the slag separator 4 is for collecting and discharging slag in the slag tap device 3, and includes a collecting tray 41, the collecting tray 41 being disposed below the slag tap tray 31, and a slag collecting chamber 42 being formed in the collecting tray 41 toward the slag tap tray 31.
The water cooling circulation system comprises a primary water cooling loop 51 and a secondary water cooling loop 52, wherein the primary water cooling loop 51 is arranged in the fire grate 2, and primary cooling is carried out on slag converged at the fire grate 2 while the fire grate 2 is cooled; the secondary water cooling circuit 52 is provided in the slag collecting chamber 42 and cools the slag discharged from the slag pan 31 into the collecting pan 41.
The primary water cooling circuit 51 and the secondary water cooling circuit 52 in the invention are closed water cooling circuits, and are mutually communicated or not communicated.
As shown in fig. 3-4, the primary water cooling circuit 51 is located inside the grate 2, the grate 2 comprising a bed 21, a grate 22 arranged on the bed 21, the grate 22 comprising a plurality of grate bars 23, for example in the case of the 5 grate bars shown in fig. 4, wherein the lowermost grate bar is fixed to the bed 21; specifically, the multiple grate bars 23 are in a tower structure from top to bottom, and each grate bar 23 has a cooling chamber 24 therein for containing a refrigerant (e.g., low-temperature water).
The primary water cooling circuit 51 includes a water inlet conduit 511, a plurality of water drain conduits 512, and a water outlet conduit 513.
In the invention, the cooling chambers 24 in the lower multiple grids 23 are annularly arranged, and the through grooves 25 are formed in the center of the grids 23, preferably, the through grooves 25 in the middle of the multiple grids 23 are distributed in a tower structure from top to bottom, as shown in fig. 4, the water inlet pipes 511 are arranged through the through grooves 25, and further, the water drain pipes 512 are vertically arranged, so that external equipment can be conveniently supplemented with water.
The drainage pipe 512 is disposed between two adjacent grids for communicating the cooling chambers 24 of two adjacent grids, preferably, two drainage pipes 512 connected with the same grid are respectively disposed at two sides of the water inlet pipe 511, and the refrigerant fully contacts with the side wall of the cooling chamber 24 in the flowing process of the refrigerant in the cooling chamber 24, so that the utilization rate of the refrigerant can be effectively improved, and the heat dissipation efficiency is improved.
A water outlet pipe 513 is provided in the pedestal 21 for discharging the refrigerant flowing into the interior of the pedestal 21 or re-filling the water inlet pipe 511 with, for example, a circulation pipe through which the refrigerant passes, and a cooling process is required.
The circulation path of the refrigerant is a water inlet pipeline, a cooling chamber positioned on the uppermost grate, a drainage pipeline, a cooling chamber positioned on the lower grate, a drainage pipeline, a pedestal and a water outlet pipeline.
In order to facilitate the water in the water inlet pipe 511 to flow into the fire grate 2 sufficiently, the uppermost grate is further provided with a water collecting tank 26, and the water outlet of the water inlet pipe 511 extends into the water collecting tank 26, wherein the water collecting tank 26 is fixed to the top-located grate 23 and has an opening at its lower end.
The adjacent two grate bars 23 are connected, for example, by an annular connecting plate 27 shown in fig. 4, and in particular, a plurality of air holes which are the same as the inside of the grate bars 22 are arranged on the annular connecting plate 27 for supplementing air for the combustion of the gasifier.
The surface of the uppermost grate 23 may be provided with a plurality of protruding points, which on the one hand increase the structural strength of the grate 22 and on the other hand avoid slag formation on the surface of the uppermost grate 2.
In the invention, a slag pan 31 is rotatably arranged in a horizontal plane relative to a furnace body of a fixed bed gasification furnace 1, a collecting pan 41 is fixedly arranged below the slag pan 31 relative to the furnace body of the fixed bed gasification furnace 1, a slag discharge outlet 311 is arranged on the slag pan 31, the collecting pan 41 is provided with a slag collecting chamber 42, the slag discharge outlet 311 is communicated with the slag collecting chamber 42, and slag in the slag collecting chamber is discharged into the slag collecting chamber 42 through the slag discharge outlet 311 by rotation of the slag pan 31.
In the slag separator 4, there are also provided a plurality of vertically disposed partition plates 43, as shown in fig. 5 to 7, the partition plates 43 being fixed below the slag pan 31 and located in the slag collecting chamber 42, preferably the number of partition plates 43 being 2 to 8, for example 6 partition plates shown in fig. 5.
Specifically, the tapping plate 31 and the collecting plate 41 are both disk-shaped, and the plurality of partition plates 43 are provided at intervals in the radial direction of the collecting plate 41.
Specifically, the partition plates 43 have a hollow structure, and each partition plate 43 has a cooling chamber 44 for containing a refrigerant (cooling water), and the cooling chambers 44 in the partition plates are not in communication with the slag collecting chamber 42, wherein the cooling chambers 44 in the plurality of partition plates may or may not be in communication with each other, and fig. 5 shows the case of the cooling chambers 44 in the plurality of partition plates being in communication with each other.
Further, the cooling cavities 44 in the adjacent two partition plates 43 are communicated through a connecting pipeline 45;
The connecting pipe 45 may be divided into an inner connecting pipe 451 and an outer connecting pipe 452, each cooling cavity 44 has a refrigerant inlet and a refrigerant outlet, two ends in the radial direction of the partition plate 43 are respectively a near-center end and a far-center end, the refrigerant inlet and the refrigerant outlet are respectively disposed at the near-center end and the far-center end, and the positions of the refrigerant inlets and the refrigerant outlets of different partition plates 43 are different.
As shown in FIG. 7, the same cooling chamber 44 is connected with an inner connecting pipe 451 and an outer connecting pipe 452, so as to form the distribution form of the pipelines shown in FIG. 7, which has the advantages of saving the length of the pipelines, being convenient for improving the fluidity of the refrigerant, and reducing the interference to the slag discharge because the pipelines do not occupy the space of the slag collecting chamber 42.
In order to improve the stability of the refrigerant circulation process, the refrigerant inlet in the present invention is not lower than the refrigerant outlet in the vertical direction, so that the refrigerant forms a stable flowing state in the cooling cavity 44.
The partition plate 43 has a certain thickness, and the refrigerant stored therein can sufficiently cool the slag in the slag collection chamber 42; before the collecting tray 41 discharges the slag, the slag can be stored in the slag collecting chamber 42, and due to the rotation of the slag discharging tray 31 relative to the collecting tray 41, the separation plate 43 can synchronously rotate along with the slag discharging tray 31, at this time, the separation plate 43 can extrude the slag to form rotary motion, and in the rotary process, the larger slag can be crushed to form smaller slag particles, so that the phenomenon of afterburning of the large slag is avoided, and the smaller slag particles can be fully contacted with the outer side surface of the separation plate 43, so that the effect of heat dissipation and cooling of the slag is further improved.
In the invention, a switching pipeline (used as a sub-cooling device) in a low-temperature environment can be arranged at the position of the slag separator 4 where slag is discharged, the slag discharged by the collecting tray 41 is transported through the switching pipeline, and the slag is cooled again in the process of being transferred to a designated position through the switching pipeline; preferably, the transfer pipeline has a larger section, so that the discharged slag can be better dispersed on the transfer pipeline, thereby facilitating further heat dissipation and cooling.
While the invention has been described in terms of preferred embodiments, it is not intended to limit the scope of the invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (9)
1. A water cooling system for a biomass gasifier, comprising:
A fixed bed gasifier comprising a grate;
the slag discharging device is arranged at the bottom of the fixed bed gasification furnace and comprises a slag discharging disc, and the slag discharging disc is arranged below the fire grate and is used for discharging slag in the fixed bed gasification furnace;
a slag separator for collecting and discharging slag in the slag discharging device; the slag separation device comprises a collecting tray with a slag collecting chamber, and the collecting tray is arranged below the slag discharging tray; and
The water cooling circulation system comprises a primary water cooling loop and a secondary water cooling loop, wherein the primary water cooling loop and the secondary water cooling loop are mutually communicated or not communicated, and the primary water cooling loop is arranged in the fire grate, so that primary cooling is carried out on slag converged at the fire grate while the fire grate is cooled; the secondary water cooling loop is arranged in the slag collecting chamber and used for cooling slag discharged into the collecting disc from the slag discharging disc;
the slag separation device comprises a plurality of vertically arranged separation plates, the plurality of separation plates are fixed below the slag discharge tray and positioned in the slag collection chamber, the separation plates are of hollow structures, and cooling cavities for containing refrigerants are arranged in the separation plates.
2. The water cooling system of a biomass gasifier according to claim 1, wherein said grate comprises a pedestal and a grate disposed on said pedestal, wherein said grate comprises a plurality of grate bars, said plurality of grate bars having a tower structure from top to bottom, each of said grate bars having a cooling chamber therein for containing a refrigerant.
3. The biomass gasifier water cooling system according to claim 2, wherein the primary water cooling loop comprises a water inlet pipe, a water drain pipe and a water outlet pipe, wherein the water outlet end of the water inlet pipe is connected to the grate positioned at the top, the cooling chambers of adjacent grate are connected by the water drain pipe, and the water outlet pipe is arranged in the pedestal; the refrigerant flows into the grate above from the water inlet pipeline, then flows through the cooling chamber of the grate and the water drain pipeline from top to bottom in sequence, flows to the pedestal and flows out from the water outlet pipeline.
4. A biomass gasification furnace water cooling system according to claim 3, wherein cooling chambers in a plurality of said furnace grids positioned below are arranged in a ring shape, a through groove is formed in the center of said furnace grids, and said water inlet pipe passes through said through groove.
5. A biomass gasifier water cooling system according to claim 3, wherein two said hydrophobic pipes connected to the same grate are located on either side of said water inlet pipe.
6. The biomass gasifier water cooling system according to claim 1, wherein the collection tray and the tapping tray rotate relative to each other without contact between the divider plate and the collection tray.
7. The biomass gasifier water cooling system according to claim 1, wherein said secondary water cooling circuit comprises a plurality of connecting lines through which cooling chambers within said plurality of divider plates communicate with each other.
8. The water cooling system of biomass gasifier according to claim 7, wherein said collection tray is disc-shaped, a plurality of said partition plates are arranged at intervals in a radial direction of said collection tray, said cooling chamber has a refrigerant inlet and a refrigerant outlet, a proximal end and a distal end are respectively arranged at both ends of said partition plates in the radial direction, and said refrigerant inlet and said refrigerant outlet are respectively arranged at said proximal end and said distal end.
9. The water cooling system of biomass gasifier according to claim 8, wherein said refrigerant inlet is disposed vertically no lower than said refrigerant outlet.
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| CN201910653454.1A CN110437885B (en) | 2019-07-17 | 2019-07-17 | Water cooling system of biomass gasification furnace |
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| CN201910653454.1A CN110437885B (en) | 2019-07-17 | 2019-07-17 | Water cooling system of biomass gasification furnace |
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| CN110437885A CN110437885A (en) | 2019-11-12 |
| CN110437885B true CN110437885B (en) | 2024-06-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114947A (en) * | 2015-09-18 | 2015-12-02 | 青岛达能环保设备股份有限公司 | Stepped cooling slag discharging method for bottom slags of circulating fluidized bed boiler |
| CN207298997U (en) * | 2017-10-19 | 2018-05-01 | 珠海市柏克莱能源科技股份有限公司 | A kind of water cooling rotary fire grate |
| CN210711426U (en) * | 2019-07-17 | 2020-06-09 | 广州环渝能源科技有限公司 | Water cooling system of biomass gasification furnace |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060126127A (en) * | 2005-06-03 | 2006-12-07 | (주)기경아이이앤드씨 | Fixed type water-cooled combustion grate |
| CN201704290U (en) * | 2010-07-02 | 2011-01-12 | 江苏云江生物能源科技有限公司 | Fire grate of biomass gasification furnace |
| CN202989072U (en) * | 2012-09-20 | 2013-06-12 | 广州薪光合环保技术有限公司 | Furnace bottom structure of gasifier |
| CN203229495U (en) * | 2013-03-22 | 2013-10-09 | 河南宇能生物质电力有限公司 | Down-draught fixed bed continuous gasification furnace water-cooling fire grate system |
| CN107619685B (en) * | 2017-10-19 | 2020-08-18 | 广州环渝能源科技有限公司 | Tower type water-cooling grate for fixed bed gasification furnace |
| CN208365556U (en) * | 2018-05-28 | 2019-01-11 | 范志刚 | A kind of grate-type biomass boiler clinker water cooling rolls the selection by winnowing conveying circulatory system |
| CN109504459B (en) * | 2018-12-21 | 2024-04-26 | 广州环渝能源科技有限公司 | Dry-type slag-discharging biomass gasification furnace |
-
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- 2019-07-17 CN CN201910653454.1A patent/CN110437885B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114947A (en) * | 2015-09-18 | 2015-12-02 | 青岛达能环保设备股份有限公司 | Stepped cooling slag discharging method for bottom slags of circulating fluidized bed boiler |
| CN207298997U (en) * | 2017-10-19 | 2018-05-01 | 珠海市柏克莱能源科技股份有限公司 | A kind of water cooling rotary fire grate |
| CN210711426U (en) * | 2019-07-17 | 2020-06-09 | 广州环渝能源科技有限公司 | Water cooling system of biomass gasification furnace |
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