CN204385136U - Crushed coal pressurized-gasification furnace - Google Patents
Crushed coal pressurized-gasification furnace Download PDFInfo
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- CN204385136U CN204385136U CN201420784045.8U CN201420784045U CN204385136U CN 204385136 U CN204385136 U CN 204385136U CN 201420784045 U CN201420784045 U CN 201420784045U CN 204385136 U CN204385136 U CN 204385136U
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Abstract
Crushed coal pressurized-gasification furnace it comprise be communicated with double coal lock feeding unit (1), body of heater and ash exhauster (5), have on body of heater and be communicated with double coal lock feeding unit (1), upper of furnace body has the static coal distributing device (2) of two channels, in the middle part of vaporizer, draw raw gas device (3) in the middle part of body of heater, lower portion of furnace body has rotation furnace grill (4), gasification agent inlet (12) and lime-ash discharge outlet (13) is had at bottom of furnace body, going up built-up welding at the gasification stove internal wall (421) that rotation furnace grill (4) is corresponding has wear-resisting, heat-resisting, the wear rib (422) of resistance to grey slag corrosion, ash exhauster (5) and lime-ash discharge outlet (13).The utility model coal dust drag-out is few, few containing pitch coal air water amount, the advantage of long service life.
Description
Technical field
The utility model belongs to a kind of crushed coal pressurized-gasification furnace.
Background technology
Crushed coal pressurized-gasification furnace is a kind of fixed bed coal gasifier, and owing to requiring low to feed coal, namely except strong cohesive property coal, all the other coals can gasify, particularly the low grade coal of low-rank coal and high ash melting point.This vapourizing furnace is widely applied to coal synthesis ammonia, methyl alcohol, dme, synthetic oil and coal gas Sweet natural gas field.Along with current Coal Gasification Technology is towards major diameter, the future development of high pressure, in unit time, the treatment capacity of coal progressively increases, coal lock is as the coal filling hole of crushed coal pressure gasifying, need ceaselessly to carry out punching press pressure release, the growth requirement of extensive gasification can not be met, the gasification ability that high pressure makes in addition improves, produce coal gas amount to increase, add the poor heat stability etc. of low-rank coal, single gas exit must take a large amount of coal dusts out of, follow-up gas washing is caused to cool, the workshop sections such as waste heat recovery result in blockage or the problem of separation difficulty, in washing process, use excessive water to wash simultaneously, gas liquor generation is caused to increase, higher-grade heat drop is low.Along with the progressively raising of vapor pressure, gasification agent inlet temperature is also improving constantly, and the temperature of discharging lime-ash is also raised, and obviously impact ash locks the work-ing life of lower valve.
China Patent No. is the single coal lock that patent discloses employing of 200580041975.8, the fixed bed coal gasifier that static distribution device has Single gas to export, this vapourizing furnace is the crushed coal pressurized-gasification furnace generally used at present, outstanding problem is that rough coal band of gas dirt problem is serious, by-product low-pressure steam is many, and dust-laden is containing problems such as pitch coal air water content are low.
Chinese patent: the employing that patent discloses of 201320037548.4 is single coal locks, and do not have static distribution device, Single gas passage, exists the problems referred to above equally.
Chinese patent: 201220582157.6 patent discloses a kind of two passage cloth device for coal for coal gasifier, by coal entrance, gas exit, inner core, the compositions such as raw gas passage composition.The object of this patent reduces coal gas enrichment area, reduces gas speed, reduce coal dust drag-out, have certain effect, but action effect is limited.
Chinese patent: 201320118045.X and 201220583000.5 discloses the rotatable fire grate of a kind of rotation with gas distributing cylinder, the former is used for the crushed coal pressurized-gasification furnace of vapourizing furnace diameter below 4.0 meters, the latter is used for the crushed coal pressurized-gasification furnace of 4.5 meters to 5.0 meters, the fire grate of these two kinds of sizes can significantly improve the stability of gasification, but also can't resolve above-mentioned Problems existing.
Chinese patent: 201210430061.2 tightness systems disclosing a kind of crushed coal pressurized-gasification furnace ash locking-valve, structural changes is little, when the too high or valve face of temperature has an ash, has a strong impact on stopping property and work-ing life.
Summary of the invention
In order to overcome deficiency of the prior art, it is few, few containing pitch coal air water amount that the purpose of this utility model is to provide a kind of coal dust drag-out, and the broken coal of long-term operation adds and press dry ash discharge vapourizing furnace.
A kind of crushed coal pressurized-gasification furnace of the present utility model, it comprises and is communicated with double coal lock feeding unit, body of heater and ash exhauster, have on body of heater and be communicated with double coal lock feeding unit, upper of furnace body has the static coal distributing device of two channels, it is vaporizer in the middle part of body of heater, lower portion of furnace body has rotation furnace grill, gasification agent inlet and lime-ash discharge outlet is had at bottom of furnace body, gasification agent inlet is between rotation furnace grill and lime-ash discharge outlet, gasification agent inlet is connected with the gas distributing cylinder in rotation furnace grill, built-up welding has wear-resisting on the gasification stove internal wall that rotation furnace grill is corresponding, heat-resisting, the wear rib of resistance to grey slag corrosion, ash exhauster and lime-ash discharge outlet.
One, described connection double coal lock feeding unit, it comprises coal lock, coal locks valve, coal lock lower valve, coal inlet, transitional storehouse and coal outlet, coal lock has 2, each coal lock top is coal inlet, and be that coal locks valve below coal inlet, coal lock bottom communicates with pipe connecting top, valve under coal lock is equipped with at pipe connecting top, be connected with transitional storehouse bottom pipe connecting, the bottom of transitional storehouse is coal outlet, is connected between 2 coal locks by least 1 coal lock gas passage.
Described coal lock gas passage locks gas passage expanding reach by two ends coal and middle coal lock gas passage straight section forms, at coal lock gas passage straight section built with connection coal lock access valve, be positioned at coal lock gas passage expanding reach and coal and lock baffle plate wall Link Port being provided with aperture, it is 30-60 ° that coal locks the angle α that gas passage expanding reach wall and coal lock wall.
Described baffle plate percentage of open area is between 45-65%, and the aperture of aperture is 0.2-1.0 millimeter.
The position of described coal lock gas passage between 0.45-0.55 times of whole coal lock height.
Connection double coal lock feeding unit as above, make coal lock gas and recycle, the rate of recycling reaches more than 60%.
Two, the static coal distributing device of described two channels is by two channels static coal distributing device coal sample entrance, inner core, coal sample enters the 1st passage of vaporizer, and coal sample enters the 2nd passage and the raw gas passage composition of vaporizer, and concrete structure is shown in Chinese patent 201220582157.6.
The static coal distributing device of two channels as above also can adopt symmetrical two gas flues, 50% is increased than single gas flue area, add in the middle part of vaporizer and add the coal gas that symmetrical gas flue draws 30-60%, reduce 65-80% compared with the flow velocity exported with raw gas in prior art, significantly reduce the carrying amount of dust in coal gas.
Three, described rotation furnace grill comprises gas distributing cylinder fixing above supporter, gas distributing cylinder is positioned at the medullary ray of supporter, gas distributing cylinder has central vaporized chemical pipe core, there is bell jar on gas distributing cylinder top, the passage of vaporized chemical in fire grate between gas distributing cylinder and bell jar, hollow rotating bottom support body is fixed with above supporter, hollow rotating supporter top is fixed with center rest and rotatable grate plate, rotatable grate plate is 5 Rotating fields of 4 layers of gas distribution or 6 Rotating fields of 5 layers of gas distribution, concrete structure is shown in Chinese patent 201320118045.X or 201220583000.5.
GASIFIER GRATES BY METALLOGRAPHIC EXAMINATIONS as above, is namely provided with the rotation furnace grill of a gas distributing cylinder, guarantees that vaporized chemical is uniformly distributed, and is formed and stablizes fire bed, guarantees that vapourizing furnace long-term stability is run.
The wear rib of four, described wear-resisting, heat-resisting, resistance to grey slag corrosion comprises curved segment, connect epimere and be connected hypomere, wherein curved segment is identical with the shape of gasification stove internal wall, the height of curved segment is 15-75 millimeter, connect epimere to be connected with gasification stove internal wall, connect hypomere becomes 2-10 degree angle theta with gasification stove internal wall, adjacent two wear ribs oppositely form the angle ε of 8-30 degree.
The wear rib of wear-resisting, heat-resisting, resistance to grey slag corrosion can make the grieshoch of vapourizing furnace not mobile with the rotation of fire grate as above, and reduce the wearing and tearing to vapourizing furnace, simultaneously fixing grieshoch can slow down the corrosion when gasifying high basic metal coal.
The wear rib of wear-resisting, heat-resisting, resistance to grey slag corrosion can chromium manganese cast steel or Wimet as above.
Five, described ash exhauster it comprise valve, lock body and lower valve, by upper valve base flange and lock body, upper valve is fixed on the top of lock body, lower valve by lower valve base directly and lock body bottom fix, upper valve guide pipe and lower valve guide pipe are fixed on lock body by the upper valve guide pipe bracing frame of correspondence and lower valve guide pipe bracing frame respectively, upper valve valve rod is flexibly connected with fork in upper valve through upper valve guide pipe, and lower valve valve rod is flexibly connected with fork in lower valve through lower valve guide pipe.
Described upper valve comprises valve core carbide ring, upper valve core, upper valve purges tracheae, water jacket I, upper valve pressure ring, upper valve valve rod, water jacket II, upper valve base carbide ring and upper valve base, water jacket II is embedded in valve base, upper valve pressure ring is fixed on above valve base, oblique trim piles valve base carbide ring of burn-oning to upper valve pressure ring, water jacket I is fixed on the outside of upper valve pressure ring above valve base, and on its ramp and pressure ring oblique trim at same plane, upper valve purges tracheae through upper valve base and water jacket I, upper valve purges the sweep gas outlet of tracheae towards upper valve core, the outer rim of upper valve core is fixed with valve core carbide ring, upper valve core lower end is fixed with valve valve rod, jacket water (J.W.) is had to export in upper valve base side, opposite side has jacket water (J.W.) import.
Described upper valve is provided with two water jackets, lay respectively at the outside of valve base inside and upper valve pressure ring, interior logical water coolant, be respectively used to upper valve base and the cooling of upper valve pressure ring, maintain homo(io)thermism on valve sealing surface, reduce the damage because temperature variation causes upper valve to cause.Near on valve core place be provided with sweep gas outlet, for purging the spoil, coal, lime-ash etc. on upper valve base Wimet anchor ring and upper valve core Wimet anchor ring.
Described lower valve comprises lower valve base, lower valve pressure ring, lower valve core, lower valve valve rod, lower valve purges tracheae, lower valve core carbide ring and lower valve base carbide ring, lower valve pressure ring is fixed on above lower valve base, on the upper oblique trim of lower valve pressure ring, heap is welded with lower valve base carbide ring, the oblique trim of the lower valve pressure ring of its bottom surface and built-up welding carbide ring at grade, lower valve purges tracheae through lower valve base, the outlet of its sweep gas is towards lower valve core, for purging the spoil on lower valve base Wimet anchor ring and lower valve core Wimet anchor ring, coal, lime-ash etc.Under the outer rim of lower valve core is fixed with lower valve core carbide ring, valve core top is fixed with lower valve valve rod.
Described upper valve, lower valve are equipped with purging tracheae, and purging tracheae bottom surface and pressure ring trim at grade, before valve closes, are blown into steam, water, CO to trim
2one or more mixture in gas, remove coal, spoil, lime-ash residual on trim, significantly can reduce the wearing and tearing to trim on the one hand, can avoid on the other hand due to coal, spoil, lime-ash etc. residual on trim, cause the fracture of carbide ring during valve closes, shorten the work-ing life of valve.
Upper valve pressure ring as above and lower valve pressure ring are outside cylinder inner funnel shape structures.
Described valve seat carbide ring and spool carbide ring material used are wolfram varbide, are applied on very stiff and demanding sealed structure, effectively can prevent the wearing and tearing of trim, extend the work-ing life of valve.
Upper valve described above and lower valve are not stricti jurise defines for upper valve and lower valve, just for discriminating device, convenient explanation, in fact valve is used for using in high temperature, high top pressure operation environment and/or the environment under having coal, spoil, lime-ash existence condition, lower valve be used for low temperature have coal, spoil, lime-ash existence condition under environment in use.
The beneficial effects of the utility model are as follows:
1) adopt two channels coal distributing device that coal sample is arranged evenly, be conducive to forming stable fire bed.
2) third channel of two channels coal distributing device has enough circulation areas, adopts two channels again, significantly reduces the flow velocity of gas exit, reduces the band dirt problem of raw gas, reduces the particle diameter of as-fired coal.
3) double coal lock connects, and coal is locked gas and recycled, and reduces the punching press of coal lock and uses fresh coal gas amount, also provides a kind of possibility for promoting vaporization ability.
4) enforcement of this utility model significantly can reduce top of gasification furnace dust-laden and pitch coal tolerance, reduces the treatment capacity of dust-laden and pitch coal air water.
5) ash exhauster has long service life, meets the demand of high-pressure gasified development.
Accompanying drawing explanation
Fig. 1 the utility model gasification furnace structure front view;
Fig. 2 is that the utility model is communicated with double coal lock feeding unit 1 front view.
Fig. 3 is that the connection double coal lock device 1 of Fig. 2 faces application drawing.
Fig. 4 is that the A of Fig. 2 coal lock gas porthole baffle plate is to figure.
Fig. 5 is static coal distributing device 2 front view of two channels.
Fig. 6 is static coal distributing device 2 left view of two channels.
Fig. 7 is rotation furnace grill structural representation.
Fig. 8 is build-up wear-resistant bar structural representation bottom vapourizing furnace.
Fig. 9 is build-up wear-resistant bar vertical view bottom vapourizing furnace.
Figure 10 is vapourizing furnace ash exhauster 5 schematic diagram.
Figure 11 is the upper valve arrangement schematic diagram of vapourizing furnace ash exhauster 5.
Figure 12 is the lower valve arrangement schematic diagram of vapourizing furnace ash exhauster 5.
As shown in the figure, 1-is communicated with double coal lock feeding unit, and the static coal distributing device of 2-two channels, draws raw gas device, 4-rotation furnace grill, 5-ash exhauster, 12-gasification agent inlet, 13-ash discharging hole in the middle part of 3-vaporizer.
101-double coal lock, 102-coal locks valve, the lower valve of 103-coal lock, 104-transitional storehouse, 105-coal lock gas passage, 106-connects coal lock access valve, 107-connects pipeline section, 108-coal stopper plate, 109-coal stopper plate aperture, 110-coal lock gas passage expanding reach, 111-coal lock gas passage straight section, 112-coal lock gas passage expanding reach and coal lock the angle α of outer wall, 113-coal outlet, 114-coal inlet, coal lock in left side in 101a-double coal lock, coal lock in right side in 101b-double coal lock, in 102a-double coal lock, left side coal locks valve, in 102b-double coal lock, right side coal locks valve, the lower valve of left side coal lock in 103a-double coal lock, the lower valve of right side coal lock in 103b-double coal lock, pipeline section is connected on the left of 107a-, pipeline section is connected on the right side of 107b-
201-stay bolt part, the straight tube of 202-inner core, the conically shaped of 203-inner core, 204-tapered sleeve, the straight shape sleeve of 205-, 206-static distribution device straight shape sleeve overhead gage, aperture on the straight shape sleeve of 207-static distribution device, 208-raw gas exports, 210-vapourizing furnace outer wall, 211-gasification stove internal wall, 212-two channels coal distributing device coal sample entrance, I-coal sample the 1st cloth coal channel, II-coal sample the 2nd cloth coal channel, III-raw gas passage
401-vaporized chemical flow-guiding channel, 402-upper support ring, 403-first qi-emitting hole, 404-second qi-emitting hole, 405-first grate plate, 406-the 3rd qi-emitting hole, 407-second grate plate, 408-the 4th qi-emitting hole, 409-the 3rd grate plate, 410-the 4th grate plate, 411-the 5th grate plate, 412-gas distributing cylinder, 413-central authorities vaporized chemical pipe core, 414-supporter, 415-center rest, 416-bell jar, 417-midfoot support body, 418-bottom support body, 419-voltage stabilizing locular wall, 420-gasification stove internal wall, 421-connects the angle theta of hypomere and gasification stove internal wall, 422-wear rib, 422a-curved segment, 422b-connects epimere, 422c-connects hypomere, 423-gasification stove internal wall, the adjacent two wear rib angle ε of 424-.
501-upper valve base flange, the upper valve of 502-, the upper valve guide pipe of 503-, fork in the upper valve of 504-, 505-ash lock, 506-lower valve guide pipe bracing frame, valve under 507-, valve guide pipe under 508-, fork in valve under 509-, 510-upper valve guide pipe bracing frame, the upper valve base of 511-, the upper valve pressure ring of 512-, the upper valve valve rod of 513-, 514-jacket water (J.W.) exports, the import of 515-upper valve sweep gas, the upper valve of 516-purges tracheae, the upper valve core of 517-, the upper valve core carbide ring of 518-, the upper valve sweep gas outlet of 519-, the upper valve base carbide ring of 520-, 521-water jacket I, 522-water jacket II, the import of 523-jacket water (J.W.), valve base under 524-, valve core under 525-, under 526-, valve purges tracheae, valve valve rod under 527-, valve core carbide ring under 528-, valve sweep gas outlet under 529-, valve base carbide ring under 530-, valve sweep gas import under 531-, valve pressure ring under 532-
Embodiment
The use further illustrate the utility model below by specific embodiment, but should be understood to, these embodiments are only used for more in detail, specifically describing, and should not be construed as limiting the utility model in any form.
General description is carried out to the material used in the utility model and test method in this part.Although for realizing many materials that the utility model uses and working method is well known in the art, the utility model is still described in detail as far as possible at this.It will be apparent to those skilled in the art that within a context, if not specified, the utility model material therefor and working method are well known in the art.
Below in conjunction with accompanying drawing, explanation is specifically done to embodiment of the present utility model.
Embodiment 1
Adopt the low-rank coal of moisture 35% to gasify, vapor pressure is 4.0MPa, gasification temperature 1050 DEG C, and it is 5-50mm coal sample that coal sample obtains particle diameter after fragmentation, screening, and loading coal bunker is that raw material is got in gasification ready, is then gasified by following steps:
A kind of crushed coal pressurized-gasification furnace, , it comprises and is communicated with double coal lock feeding unit 1, body of heater and ash exhauster 5, have on body of heater and be communicated with double coal lock feeding unit 1, upper of furnace body has the static coal distributing device 2 of two channels, it is vaporizer 3 in the middle part of body of heater, lower portion of furnace body has rotation furnace grill 4, gasification agent inlet 12 and lime-ash discharge outlet 13 is had at bottom of furnace body, gasification agent inlet 12 is between rotation furnace grill 4 and lime-ash discharge outlet 13, gasification agent inlet 12 is connected with the gas distributing cylinder 412 in rotation furnace grill 4, built-up welding has wear-resisting on the gasification stove internal wall 420 of rotation furnace grill 4 correspondence, heat-resisting, the wear rib 422 of resistance to grey slag corrosion, ash exhauster 5 and lime-ash discharge outlet 13.
1) connection double coal lock feeding unit 1 comprises coal lock 101, coal locks valve 102, coal lock lower valve 103, coal inlet 114 and coal outlet 113, coal lock 101 has 2, it is coal inlets 114 that each coal locks 101 tops, below coal inlet 114 be coal lock bottom valve 102, coal lock 101 be connected pipeline section 107 top and communicate, valve 103 under coal lock is equipped with at connection pipeline section 107 top, connect bottom pipeline section 107 and be connected with transitional storehouse 104, the bottom of transitional storehouse 104 is coal outlet 113, is connected between 2 coal locks 101 by 1 coal lock gas path 10 5.Coal lock gas path 10 5 locks gas passage expanding reach 110 by two ends coal and middle coal lock gas passage straight section 111 forms, at coal lock gas passage straight section 111 built with connection coal lock access valve 106, the coal being positioned at coal lock gas passage expanding reach locks the coal stopper plate 108 101 walls being provided with coal stopper plate aperture 109, and the wall of coal lock gas passage expanding reach 110 and coal lock 101 walls becomes 48 ° of angle α 112.Coal stopper plate 108 percentage of open area is between 49%, and the aperture of coal stopper plate aperture 109 is 0.2 millimeter.Coal lock gas path 10 5 is positioned at the position of 0.48 times of coal lock height.
Double coal lock feeding unit 1 described above realizes alternation by following steps: the coal lock lower valve 103a corresponding when coal lock 101a is in atmospheric pressure state is in closing condition, after coal in coal bunker being added normal pressure coal lock 101a, close corresponding coal and lock valve 102a, another coal lock 101b sends coal into vaporizer through transitional storehouse 104 under gravity simultaneously, after coal sample all sends into vaporizer, this coal lock 101b is filled with high pressure gas, now close the lower valve 103b of coal lock of this coal lock, open be full of coal gas high pressure coal lock 101b and loaded coal sample normal pressure coal lock 101a between connect coal lock access valve 106, treat that two coal lock 101a and 101b pressure are equal, close connection two coal lock 101a with 101b and be connected coal lock access valve 106, then the coal gas in the coal lock 101b now do not coaling is extracted out, coaling after making coal lock 101b to normal pressure, two coal lock 101a and 101b alternation, carry out the filling of coal sample, coal lock gas more than 60% recycles.
2) inner core that the static coal distributing device of two channels described in fills 2 is made up of straight tube 202 and conically shaped 203, the top of straight tube 202 is openings, straight tube 202 is connected with conically shaped 203 small end, mitriform sleeve is fixed with on the top of straight tube 202, mitriform sleeve is made up of tapered sleeve 204 and straight shape sleeve 205, straight shape sleeve 205 diameter is less than the outside diameter of tapered sleeve 204, straight shape sleeve 205 outer wall is fixed with plate washer 206, the free end of baffle plate 206 is downward, straight shape sleeve 205 wall of plate washer 206 position is provided with aperture 207, gas exit and stay bolt part 201, raw gas passage III is formed between mitriform sleeve and inner core, the straight tube 202 of inner core enters the 1st passage I of vapourizing furnace for coal, the 2nd passage II that coal enters vapourizing furnace is formed between mitriform sleeve and gasification stove internal wall.In vaporizer, the static coal distributing device device of two channels also can adopt symmetrical two gas flues.
The static coal distributing device 2 of two channels described above realizes uniform coal distributor by following steps: the static coal distributing device device 2 of coal two channels in vaporizer entering vaporizer, this coal distributing device device is made up of the straight tube 202 of inner core and the conically shaped 203 of inner core, define the channel structure of coal sample, a coal sample part is made to enter vapourizing furnace by the 1st passage I, another part enters vapourizing furnace the 2nd passage II by forming coal between mitriform sleeve and gasification stove internal wall enters vapourizing furnace, reaches uniform coal sample like this and arranges.The coal gas that gasification produces draws vapourizing furnace by forming raw gas passage III between mitriform sleeve and inner core.
3) the fire grate device 4 that vaporizer bottom is provided with rotation comprises the fixing gas distributing cylinder 412 of supporter 414 above, gas distributing cylinder 412 is positioned at the medullary ray of supporter 414, gas distributing cylinder 412 has central vaporized chemical pipe core 413, there is bell jar 416 on gas distributing cylinder top, the passage of vaporized chemical in fire grate between gas distributing cylinder 412 and bell jar 416, supporter 414 is fixed with hollow rotating bottom support body 418 above, hollow rotating supporter 418 top is fixed with center rest 415 and rotatable grate plate, rotatable stove plate can be 5 Rotating fields of 4 layers of gas distribution or 6 Rotating fields of 5 layers of gas distribution.With reference to figure 9, i.e. 5 Rotating fields of 4 layers of gas distribution, be followed successively by the first grate plate 405 from top to bottom, second grate plate 407,3rd grate plate 409, five layers of fire grate structure of 4 layers of gas distribution of the 4th grate plate 410 and the 5th grate plate 411, are positioned at upper support above the first grate plate 405 for supporting upper support ring 402 and voltage stabilizing locular wall 419.A vaporized chemical flow-guiding channel 401 is formed between two grate plates, vaporized chemical first qi-emitting hole 403 of vaporized chemical by the upper support ring 402 under grate plate is opened, second qi-emitting hole 404,3rd qi-emitting hole 406,4th qi-emitting hole 408 enters vaporized chemical flow-guiding channel 401 uniformly, then enters vapourizing furnace and lime-ash carries out heat exchange.
4) wear rib 422 of wear-resisting, heat-resisting, the resistance to grey slag corrosion described in comprises curved segment 422a, connect epimere 422b and be connected hypomere 422c, wherein curved segment 422a is identical with the shape of gasification stove internal wall 420 curved segment, the height of curved segment 422a is 18 millimeters, connect epimere 422b to be connected with gasification stove internal wall, connect hypomere 422c becomes 3 degree angle theta 421 with gasification stove internal wall, adjacent two wear ribs 422 form the angle ε 424 of 9 degree.The wear rib 422 of wear-resisting, heat-resisting, resistance to grey slag corrosion is chromium manganese cast steel.
5) ash exhauster 5 described in it comprise valve 502, lock body 505 and lower valve 507, by upper valve base flange 501 and lock body 505, upper valve 502 is fixed on the top of lock body 505, lower valve 507 by lower valve base 524 directly and lock body 505 bottom fix, upper valve guide pipe 503 and lower valve guide pipe 508 are fixed on lock body 505 by the upper valve guide pipe bracing frame 510 of correspondence and lower valve guide pipe bracing frame 506 respectively, upper valve valve rod 513 is flexibly connected with fork 504 in upper valve through upper valve guide pipe 503, lower valve valve rod 527 is flexibly connected with fork 509 in lower valve through lower valve guide pipe 508.
Described upper valve 502 comprises valve core carbide ring 520, upper valve core 517, upper valve purges tracheae 516, water jacket I 521, upper valve pressure ring 512, upper valve valve rod 513, water jacket II 522, upper valve base carbide ring 520 and upper valve base 511, water jacket II 522 is embedded in valve base 511, upper valve pressure ring 512 is fixed on above valve base 511, oblique trim piles valve base carbide ring 520 of burn-oning to upper valve pressure ring 512, water jacket I 521 is fixed on the outside of upper valve pressure ring 512 above valve base 511, and on its ramp and pressure ring oblique trim at same plane, upper valve purges tracheae 516 through upper valve base 511 and water jacket I 521, upper valve purges the sweep gas outlet 519 of tracheae 516 towards upper valve core 517, the outer rim of upper valve core 517 is fixed with valve core carbide ring 518, upper valve core 517 lower end is fixed with valve valve rod 513, there is jacket water (J.W.) to export 514 in upper valve base 511 side, opposite side has jacket water (J.W.) import 523.
Described upper valve 502 is provided with two water jackets, lay respectively at the outside of valve base 511 inside and upper valve pressure ring 512, interior logical water coolant, be respectively used to cool upper valve base 511 and upper valve pressure ring 512, maintain homo(io)thermism on valve sealing surface, reduce the damage because temperature variation causes upper valve to cause.Near on valve core place be provided with sweep gas outlet 519, for purging the spoil, coal, lime-ash etc. on upper valve base carbide ring 520 and upper valve core carbide ring 520.
Described lower valve 507 comprises lower valve base 524, lower valve pressure ring 532, lower valve core 525, lower valve valve rod 527, lower valve purges tracheae 526, lower valve core carbide ring 528 and lower valve base carbide ring 530, lower valve pressure ring 532 is fixed on above lower valve base 524, on the upper oblique trim of lower valve pressure ring 532, heap is welded with lower valve base carbide ring 530, the oblique trim of the lower valve pressure ring 532 of its bottom surface and built-up welding carbide ring 530 at grade, lower valve purges tracheae 526 through lower valve base 524, the outlet 529 of its sweep gas is towards lower valve core 525, for purging the spoil on lower valve base carbide ring 530 and lower valve core carbide ring 528, coal, lime-ash etc.The outer rim of lower valve core 525 is fixed with lower valve core carbide ring 528, and lower valve core 525 top is fixed with lower valve valve rod 527.
Described upper valve 502, lower valve 507 are equipped with purging tracheae, and purging tracheae bottom surface and pressure ring trim at grade, before valve closes, are blown into steam, water, CO to trim
2one or more mixture in gas, remove coal, spoil, lime-ash residual on trim, significantly can reduce the wearing and tearing to trim on the one hand, can avoid on the other hand due to coal, spoil, lime-ash etc. residual on trim, cause the fracture of carbide ring during valve closes, shorten the work-ing life of valve.
Upper valve pressure ring 512 as above and lower valve pressure ring 532 are outside cylinder inner funnel shape structures.
Described valve seat carbide ring and spool carbide ring material used are wolfram varbide, are applied on very stiff and demanding sealed structure, effectively can prevent the wearing and tearing of trim, extend the work-ing life of valve.
Upper valve 502 described above and lower valve 507 are not stricti jurise defines for upper valve and lower valve, just for discriminating device, convenient explanation, in fact valve 502 uses for high temperature, high top pressure operation environment and/or have in the environment under coal, spoil, lime-ash existence condition, and lower valve 507 has in the environment under coal, spoil, lime-ash existence condition for low temperature and uses.
Coal sample is locked through coal, enter vaporizer after two channels static coal distributing device cloth coal, experience successively from the top down drying, destructive distillation, methanation, gasification and carbon residue remaining after combustion lime-ash get rid of vapourizing furnace by ash lock is intermittent bottom vaporizer, the coal gas that gasification different steps produces and coal sample counter-current operation, raw gas is drawn by the gas flue through vaporizer top after destructive distillation and drying layer, reduce and draw dust-laden, pitch coal tolerance from vapourizing furnace top, significantly reduce washing coal gas and use water.
Embodiment 2
Adopt the smokeless coal gasification of moisture 6%, vapor pressure is 5.0MPa, gasification temperature 1250 DEG C, and it is 5-50mm coal sample that coal sample obtains particle diameter after fragmentation, screening, and loading coal bunker is that raw material is got in gasification ready, is then gasified by following steps:
The double coal lock device be communicated with at least locks gas path 10 5 containing 1 to the coal of symmetry, position between be metered into vaporizer height from valve 103 under coal lock 0.52, coal lock gas passage is locked the coal stopper plate 108 that gas porthole is arranged by coal, the coal stopper plate aperture 109 that baffle plate is opened, expanding reach 110, straight section 111 and valve 106 form, it is 45 ° that expanding reach 110 and coal lock the angle α 112 that outer wall becomes, the percentage of open area of baffle plate is between 52%, and the aperture of the coal stopper plate aperture 109 on coal stopper plate is 0.5 millimeter.
The height of curved segment 422a is 37 millimeters, and connect hypomere 422c becomes 5 degree angle theta 421 with gasification stove internal wall, adjacent two wear ribs 422 form the angle ε 424 of 15 degree.The wear rib 422 of wear-resisting, heat-resisting, resistance to grey slag corrosion is Wimet.All the other are with embodiment 1.
Embodiment 3
Adopt the para-bituminous coal of moisture 20% to gasify, vapor pressure is 5.4MPa, gasification temperature 1150 DEG C, and it is 5-50mm coal sample that coal sample obtains particle diameter after fragmentation, screening, and loading coal bunker is that raw material is got in gasification ready, is then gasified by following steps:
The double coal lock device be communicated with is at least containing 1 coal lock gas path 10 5, position between be metered into vaporizer height from valve 103 under coal lock 0.46, coal lock gas passage is locked the coal stopper plate 108 that gas porthole is arranged by coal, the coal stopper plate aperture 109 that coal stopper plate is opened, expanding reach 110, straight section 111 and valve 106 form, and it is 33 ° that expanding reach 110 and coal lock the angle α 112 that outer wall becomes, the percentage of open area of coal stopper plate is between 63%, and the aperture of coal stopper plate aperture 109 is 0.8 millimeter.
The height of curved segment 422a is 74 millimeters, connects hypomere 422c becomes 9.8 degree angle theta 421 with gasification stove internal wall, and adjacent two wear ribs 422 oppositely form the angle ε 424 of 30 degree.The wear rib 422 of wear-resisting, heat-resisting, resistance to grey slag corrosion is chromium manganese cast steel.The wear rib 422 of wear-resisting, heat-resisting, resistance to grey slag corrosion is chromium manganese cast steel.All the other are with embodiment 1.
Claims (16)
1. a crushed coal pressurized-gasification furnace, it comprises and is communicated with double coal lock feeding unit (1), body of heater and ash exhauster (5), have on body of heater and be communicated with double coal lock feeding unit (1), upper of furnace body has the static coal distributing device (2) of two channels, in the middle part of vaporizer, draw raw gas device (3) in the middle part of body of heater, lower portion of furnace body has rotation furnace grill (4), gasification agent inlet (12) and lime-ash discharge outlet (13) is had at bottom of furnace body, gasification agent inlet (12) is positioned between rotation furnace grill (4) and lime-ash discharge outlet (13), gasification agent inlet (12) is connected with the gas distributing cylinder (412) in rotation furnace grill (4), going up built-up welding at the gasification stove internal wall (420) that rotation furnace grill (4) is corresponding has wear-resisting, heat-resisting, the wear rib (422) of resistance to grey slag corrosion, ash exhauster (5) and lime-ash discharge outlet (13).
2. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, it is characterized in that described connection double coal lock feeding unit (1), it comprises coal lock (101), coal locks valve (102), , the lower valve (103) of coal lock, coal inlet (114), transitional storehouse (104) and coal outlet (113), coal lock (101) has 2, each coal lock (101) top is coal inlet (114), coal inlet (114) below is that coal locks valve (102), coal lock (101) bottom communicates with pipe connecting (107) top, valve (103) under coal lock is equipped with at pipe connecting (107) top, pipe connecting (107) bottom is connected with transitional storehouse (104), the bottom of transitional storehouse (104) is coal outlet (113), be connected by least 1 coal lock gas passage (105) between 2 coals lock (101).
3. a kind of crushed coal pressurized-gasification furnace as claimed in claim 2, it is characterized in that described coal lock gas passage (105) locks gas passage expanding reach (110) by two ends coal and middle coal lock gas passage straight section (111) forms, at coal lock gas passage straight section (111) built with connection coal lock access valve (106), be positioned at coal lock gas passage expanding reach 110 and lock with coal the baffle plate (108) (1) wall Link Port being provided with aperture (109), the angle α (112) that coal lock gas passage expanding reach (110) wall and coal lock (101) wall is 30-60
o.
4. a kind of crushed coal pressurized-gasification furnace as claimed in claim 3, it is characterized in that described baffle plate (108) percentage of open area is between 45-65%, the aperture of aperture (109) is 0.2-1.0 millimeter.
5. a kind of crushed coal pressurized-gasification furnace as claimed in claim 2, is characterized in that the position of described coal lock gas passage (105) between 0.45-0.55 times of whole coal lock height.
6. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, it is characterized in that the static coal distributing device (2) of described two channels is by static coal distributing device coal sample entrance (212) of two channels, inner core, coal sample enters the 1st passage (I) of vaporizer, and coal sample enters the 2nd passage (II) and raw gas passage (III) composition of vaporizer.
7. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, is characterized in that the static coal distributing device (2) of described two channels adopts symmetrical two gas flues (III).
8. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, it is characterized in that described rotation furnace grill (4) comprises the fixing gas distributing cylinder (412) of supporter (414) above, gas distributing cylinder (412) is positioned at the medullary ray of supporter (414), gas distributing cylinder (412) has central vaporized chemical pipe core (413), there is bell jar (416) on gas distributing cylinder top, the passage of vaporized chemical in fire grate between gas distributing cylinder (412) and bell jar (416), supporter (414) is fixed with hollow rotating bottom support body (418) above, hollow rotating supporter (418) top is fixed with center rest (415) and rotatable grate plate, rotatable grate plate is 5 Rotating fields of 4 layers of gas distribution or 6 Rotating fields of 5 layers of gas distribution.
9. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, it is characterized in that described wear-resisting, heat-resisting, the wear rib (422) of resistance to grey slag corrosion comprises curved segment (422a), connect epimere (422b) and be connected hypomere (422c), wherein curved segment (422a) is identical with the shape of gasification stove internal wall, the height of curved segment (422a) is 15-75 millimeter, connect epimere (422b) to be connected with gasification stove internal wall, connect hypomere (422c) becomes 2-10 degree angle theta (421) with gasification stove internal wall, adjacent two wear ribs (422) oppositely form the angle ε (424) of 8-30 degree.
10. a kind of crushed coal pressurized-gasification furnace as claimed in claim 1, is characterized in that the wear rib (422) of described wear-resisting, heat-resisting, resistance to grey slag corrosion is chromium manganese cast steel or Wimet.
11. a kind of crushed coal pressurized-gasification furnaces as claimed in claim 1, it comprises valve (502) to it is characterized in that described ash exhauster (5), lock body (505) and lower valve (507), by upper valve base flange (501) and lock body (505), upper valve (502) is fixed on the top of lock body (505), lower valve (507) by lower valve base (524) directly and lock body (505) bottom fix, upper valve guide pipe (503) and lower valve guide pipe (508) are fixed on lock body (505) by the upper valve guide pipe bracing frame (510) of correspondence and lower valve guide pipe bracing frame (506) respectively, upper valve valve rod (513) is flexibly connected with fork (504) in upper valve through upper valve guide pipe (503), lower valve valve rod (527) is flexibly connected with fork (509) in lower valve through lower valve guide pipe (508).
12. a kind of crushed coal pressurized-gasification furnaces as claimed in claim 11, it is characterized in that described upper valve (502) comprises valve core carbide ring (520), upper valve core (517), upper valve purges tracheae (516), water jacket I (521), upper valve pressure ring (512), upper valve valve rod (513), water jacket II (522), upper valve base carbide ring (520) and upper valve base (511), water jacket II (522) is embedded in valve base (511), upper valve pressure ring (512) is fixed on valve base (511) top, the upper oblique trim of upper valve pressure ring (512) piles valve base carbide ring (520) of burn-oning, water jacket I (521) is fixed on the outside of valve pressure ring (512) on valve base (511) top, and on its ramp and pressure ring oblique trim at same plane, upper valve purges tracheae (516) through upper valve base (511) and water jacket I (521), upper valve purges sweep gas outlet (519) of tracheae (516) towards upper valve core (517), the outer rim of upper valve core (517) is fixed with valve core carbide ring (518), upper valve core (517) lower end is fixed with valve valve rod (513), there is jacket water (J.W.) to export (514) in upper valve base (511) side, opposite side has jacket water (J.W.) import (523).
13. a kind of crushed coal pressurized-gasification furnaces as claimed in claim 11, it is characterized in that described lower valve (507) comprises lower valve base (524), lower valve pressure ring (532), lower valve core (525), lower valve valve rod (527), lower valve purges tracheae (526), lower valve core carbide ring (528) and lower valve base carbide ring (530), lower valve pressure ring (532) is fixed on lower valve base (524) top, on the upper oblique trim of lower valve pressure ring (532), heap is welded with lower valve base carbide ring (530), the oblique trim of the lower valve pressure ring (532) of its bottom surface and built-up welding carbide ring (530) at grade, lower valve purges tracheae (526) through lower valve base (524), its sweep gas outlet (529) is towards lower valve core (525), for purging the spoil on lower valve base carbide ring (530) face and lower valve core carbide ring (528) face, coal, lime-ash etc., the outer rim of lower valve core (525) is fixed with lower valve core carbide ring (528), lower valve core (525) top is fixed with lower valve valve rod (527).
14. a kind of crushed coal pressurized-gasification furnaces as claimed in claim 12, is characterized in that described upper valve pressure ring (512) is outside cylinder inner funnel shape structure.
15. a kind of crushed coal pressurized-gasification furnaces as claimed in claim 13, is characterized in that described lower valve pressure ring (532) is outside cylinder inner funnel shape structure.
16. a kind of crushed coal pressurized-gasification furnaces as described in claim 12 or 13, is characterized in that described Wimet is wolfram varbide.
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| CN201420784045.8U CN204385136U (en) | 2014-12-11 | 2014-12-11 | Crushed coal pressurized-gasification furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403693A (en) * | 2014-12-11 | 2015-03-11 | 赛鼎工程有限公司 | Crushed-coal pressurizing gasifier |
| CN108148634A (en) * | 2018-02-11 | 2018-06-12 | 煤炭科学技术研究院有限公司 | A kind of novel fixed bed slag gasification installation of stage casing outlet |
| CN109555864A (en) * | 2018-12-11 | 2019-04-02 | 云南大为化工装备制造有限公司 | A kind of coal gasifier slag lock and its manufacture craft |
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2014
- 2014-12-11 CN CN201420784045.8U patent/CN204385136U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403693A (en) * | 2014-12-11 | 2015-03-11 | 赛鼎工程有限公司 | Crushed-coal pressurizing gasifier |
| CN104403693B (en) * | 2014-12-11 | 2017-01-04 | 赛鼎工程有限公司 | A kind of crushed coal pressurized-gasification furnace |
| CN108148634A (en) * | 2018-02-11 | 2018-06-12 | 煤炭科学技术研究院有限公司 | A kind of novel fixed bed slag gasification installation of stage casing outlet |
| CN108148634B (en) * | 2018-02-11 | 2023-09-12 | 煤炭科学技术研究院有限公司 | Novel fixed bed slag gasification device with middle section air outlet |
| CN109555864A (en) * | 2018-12-11 | 2019-04-02 | 云南大为化工装备制造有限公司 | A kind of coal gasifier slag lock and its manufacture craft |
| CN109555864B (en) * | 2018-12-11 | 2019-11-26 | 云南大为化工装备制造有限公司 | A kind of manufacture craft of coal gasifier slag lock |
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