CN103215080B - Ash discharge device for high-temperature high-pressure ash particle and ash discharge method thereof - Google Patents
Ash discharge device for high-temperature high-pressure ash particle and ash discharge method thereof Download PDFInfo
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Abstract
The invention discloses an ash discharge device for a high-temperature high-pressure ash particle. The device comprises a pressure tank, a pressure varying tank, an ash storage bin, a cyclone separator, a U-shaped material return valve, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, and a fifth pipeline, wherein a feed port is formed on the pressure tank, a heat exchange coil pipe is arranged inside the inner cavity of the pressure tank, an air distributing plate is arranged at the lower part of the pressure tank, the cyclone separator is communicated with the pressure tank and the feed port of the U-shaped material return valve, the discharge port of the U-shaped material return valve is communicated with the pressure tank, the bottom end of the pressure tank is connected with the top end of the pressure varying tank, the bottom end of the pressure varying tank is connected with the top end of the ash storage bin, the first pipeline is provided with a multi-stage pressure reducing valve, the third pipeline is provided with a pressure varying tank vent valve, the fourth pipeline is provided with the pressure varying tank inflation valve, and the fifth pipeline is provided with the ash storage bin inflation valve. The ash discharge device can effectively reduce the temperature and pressure of the ash particle. The invention also discloses an ash discharge method utilizing the ash discharge device, and the method is easy to operate, safe and reliable.
Description
Technical field
The present invention relates to a kind of ash exhauster for ash particle and ash discharge method thereof, specifically, relate to a kind of ash exhauster for High Temperature High Pressure ash particle and ash discharge method thereof.
Background technology
China's economy, in developing rapidly, is faced with the bottleneck of Energy resources and environmental restraint, and in view of the feature of China's rich coal oil starvation weak breath, gasification becomes the important foundation that Coal Energy Source clean and effective transforms.Because current air-flow bed coal-gasification technology generally adopts slag tap mode, therefore, this technology is subject to certain restrictions in the selection of high-ash-fusion coal.China's coal aspect grey characteristic from different abroad, average ash content higher (generally in 27% one 28% left and right), and ash fusion point is generally higher, fusing point accounts for respectively 57% left and right of 55% and reserves of coal in China annual production higher than the coal of l400 ℃.So many high-ash-fusion coal, adds fusing assistant if adopt, and certainly will increase to a certain extent oxygen consumption, bed drain purge and deslagging thermosteresis; And adopt to improve the method for gasification temperature (requiring gasification temperature more than l600 ℃), correspondingly increased C0 in oxygen consumption, coal gas
2content, and work-ing life of having reduced cold gas efficiency and vapourizing furnace.Adopt existing slag tap type entrained flow bed gasification technology to use China's high ash melting point coal seed and will face the series of problems such as deslagging difficulty, therefore, be necessary to develop the In The Fluidized Bed Coal Gasification Technology that is applicable to China's high ash melting point coal seed.
Fluidized-bed gasification technology fuel tolerance is wide, comprises various coals, refinery coke, and biomass etc., for the dystectic coal of the high ash content of China, fluidization is with the obvious advantage.Along with the raising of vapor pressure, in coal gas, methane content increases, and caloric power of gas increases, and gasification efficiency improves, therefore pressurised fluidized bed gasification technology is effective method.For the dystectic coal of high ash content, the ash amount of fluidized-bed pressurizing gasifying apparatus discharge is large and the large temperature of pressure is high, so must carry out can discharging after cooling and pressurization.In high temperature Winkler's method (HTW) gasifying process of Germany's exploitation, second-stage separator flying dust out enters one-level device for cooling ash, then after three grey lock hoppers enter secondary device for cooling ash, discharges.Device for cooling ash is wherein air cooling spiral form, need to bear High Temperature High Pressure, and apparatus processing difficulty is high, expensive.
Summary of the invention
technical problem:technical problem to be solved by this invention is: a kind of ash exhauster for High Temperature High Pressure ash particle is provided, this ash exhauster can effectively reduce the temperature and pressure of ash particle, and meanwhile, the present invention also provides the ash discharge method of utilizing this ash exhauster, this ash discharge method is easy to operate, and safe and reliable.
technical scheme:for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of ash exhauster for High Temperature High Pressure ash particle, this ash exhauster comprises pressure-pot, transformation tank, ash-storing bin, cyclonic separator, U-shaped returning charge valve, the first pipeline, the second pipeline, the 3rd pipeline, the 4th pipeline and the 5th pipeline, the top of pressure-pot is provided with opening for feed, in the inner chamber of pressure-pot, be provided with heat exchange coil, the water-in of heat exchange coil and water outlet are positioned at the outside of pressure-pot, the bottom of pressure-pot is provided with air distribution plate, cyclonic separator and U-shaped returning charge valve are positioned at the outside of pressure-pot, and cyclonic separator is communicated with the top of pressure-pot by pipeline, the bottom of cyclonic separator is communicated with the pan feeding port of U-shaped returning charge valve, the discharging port of U-shaped returning charge valve is communicated with pressure-pot, the bottom of pressure-pot is connected with the top of transformation tank with the second baiting valve by the first baiting valve, and the bottom of transformation tank is connected with the top of ash-storing bin with the second bleeder valve by the first bleeder valve, the top inlet mouth of the first pipeline is communicated with cyclonic separator, and the first pipeline middle part is provided with multi-step pressure reduction valve, and the first pipeline bottom is connected with the bottom of ash-storing bin with the 4th bleeder valve by the 3rd bleeder valve, the top of the second pipeline is communicated with pressure-pot, the bottom of the second pipeline is communicated with ash-storing bin, one end of the 3rd pipeline is communicated with transformation tank, the other end of the 3rd pipeline and the first pipeline connection, and the 3rd pipeline middle part is communicated with by the mouth that crosses with the second pipeline, the 3rd pipeline is provided with transformation tank purging valve, and this transformation tank purging valve is between the second pipeline and the first pipeline, the second pipeline is provided with the first equilibrium valve and the second equilibrium valve, and the first equilibrium valve is crossing between mouth and the second pipeline top, and the second equilibrium valve is crossing between mouth and the second pipeline bottom, multi-step pressure reduction valve is positioned between the first TOP and the 3rd pipeline, one end of the 4th pipeline is communicated with transformation tank, and the 4th pipeline is provided with transformation tank inflation valve, one end of the 5th pipeline is communicated with ash-storing bin, and the 5th pipeline is provided with ash-storing bin inflation valve.
Further, the described ash exhauster for High Temperature High Pressure ash particle, also comprises that water jacket, water jacket are wrapped on the outer wall of opening for feed, and water jacket is communicated with the water outlet of heat exchange coil.
The ash discharge method of the above-mentioned ash exhauster for High Temperature High Pressure ash particle, this ash discharge method comprises the following steps:
Step 10) reduces ash particle temperature: all valve original states are closes, when starting, charging opens multi-step pressure reduction valve, and pass into heat-eliminating medium to the heat exchange coil that is arranged in pressure-pot inside, to the air distribution plate that is arranged in pressure-pot bottom, pass into nitrogen, then, the ash particle of High Temperature High Pressure is entered in pressure-pot to the cooling ash particle of heat-eliminating medium and nitrogen by opening for feed; Gas flow the first pipeline in pressure-pot, wherein, contains ash particle in gas, after cyclonic separator separation, ash particle enters in the separated standpipe of cyclonic separator, then by U-shaped returning charge valve, separated ash particle is sent back in pressure-pot; Cyclonic separator exit gas, by after the step-down of multi-step pressure reduction valve, is discharged and is carried wind as the ash particle in ash-storing bin, from the first pipeline, discharges;
Step 20) to ash discharge in transformation tank: first, open transformation tank inflation valve, by transformation tank inflation valve, in transformation tank, be filled with nitrogen, when the gaseous tension in transformation tank approaches the gaseous tension of pressure-pot, close transformation tank inflation valve, open the first equilibrium valve, until pressure-pot and transformation tank internal pressure equate; Then, open successively the second baiting valve and the first baiting valve, the ash particle in pressure-pot enters in transformation tank, last, closes successively the first equilibrium valve, the first baiting valve and the second baiting valve;
Step 30) reduce ash particle pressure: open transformation tank purging valve, until the gaseous tension in transformation tank while approaching the gaseous tension in ash-storing bin, is closed transformation tank purging valve;
Step 40) ash discharge: first, open the second equilibrium valve, until during pressure equilibrium between transformation tank and ash-storing bin, open successively the second bleeder valve and the first bleeder valve, ash particle enters ash-storing bin from transformation tank under action of gravity, then, close successively the first bleeder valve, the second bleeder valve and the second equilibrium valve, then, open ash-storing bin inflation valve, in ash-storing bin, be filled with gas, subsequently, open successively the 4th bleeder valve and the 3rd bleeder valve, by ash-storing bin inflation valve, in ash-storing bin, be filled with nitrogen, ash particle is under action of gravity and under the conveying of nitrogen, from ash-storing bin, enter in the first pipeline, from the ash output hole of the first pipeline, discharge.
beneficial effect:compared with prior art, technical scheme of the present invention has the following advantages:
1. ash particle is cooling carries out with step-down segmentation.First the processing of lowering the temperature: in pressure-pot of the present invention, carry out cooling to ash particle.Specifically, by being arranged on the cooling ash particle of heat exchange coil in pressure-pot, the loosening wind passing into from air distribution plate also has certain cooling performance.Then carry out step-down processing: in transformation tank, carry out, open transformation tank purging valve, until the gaseous tension in transformation tank approaches the gaseous tension in ash-storing bin.By twice step-down of once lowering the temperature, realized ash particle has been carried out to decrease temperature and pressure processing.
2. the ash content of High Temperature High Pressure is cooled to 400 ℃ of left and right in pressure-pot, and now material and the manufacturing technique requirent for machinery valve reduces, and valve is easily selected, cost-saving; Also extend the life-span of whole system simultaneously, and increased the security of operation.
3. in the water jacket of pressure-pot top opening for feed and pressure-pot, the heat-eliminating medium in heat exchange coil is water or steam, the ash particle of heat-eliminating medium and high temperature carries out heat exchange, and heat-eliminating medium absorbs heat, and temperature raises, finally enter waste heat boiler, make full use of waste heat in ash particle.
4. between pressure-pot and transformation tank, set up respectively equilibrium valve between transformation tank and ash-storing bin, guarantee pressure equilibrium in pressure-pot transformation tank and ash-storing bin, ash particle relies on self gravitation to fall, and makes more steadily controllability enhancing of ash particle motion, has reduced the impact to equipment.
5. in pressure-pot bottom, air distribution plate is set, passes into nitrogen gas stream and can effectively avoid the phenomenon that in pressure-pot, dust stratification is put up a bridge, avoid ash particle to stop up, thereby can guarantee that ash discharge is unobstructed.
6. can continuously feeding in pressure-pot cooling, ash-storing bin can be discharged the ash particle of low-temp low-pressure continuously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, have: opening for feed 1, water jacket 2, pressure-pot 3, heat exchange coil 4, air distribution plate 5, the first baiting valve 6, the second baiting valve 7, transformation tank inflation valve 8, the 4th pipeline 9, transformation tank 10, the first bleeder valve 11, the second bleeder valve 12, ash-storing bin inflation valve 13, the 5th pipeline 14, ash-storing bin 15, the first pipeline 16, cyclonic separator 17, U-shaped returning charge valve 18, multi-step pressure reduction valve 19, the first equilibrium valve 20, the second pipeline 21, the 3rd pipeline 22, mouth 23 crosses, transformation tank purging valve 24, the second equilibrium valve 25, the 3rd bleeder valve 26, the 4th bleeder valve 27, compressor 28.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.The High Temperature High Pressure ash particle of mentioning in the present invention refers to that temperature is at 500-1000 degrees Celsius, and pressure is at the ash particle of 0.5-10Mpa.
As shown in Figure 1, a kind of ash exhauster for High Temperature High Pressure ash particle of the present invention, comprises pressure-pot 3, transformation tank 10, ash-storing bin 15, cyclonic separator 17, U-shaped returning charge valve 18, the first pipeline 16, the second pipeline 21, the 3rd pipeline 22, the 4th pipeline 9 and the 5th pipeline 14.The top of pressure-pot 3 is provided with opening for feed 1.Opening for feed 1 is for adding High Temperature High Pressure ash particle to pressure-pot 3.In the inner chamber of pressure-pot 3, be provided with heat exchange coil 4.The water-in of heat exchange coil 4 and water outlet are positioned at the outside of pressure-pot 3.In heat exchange coil 4, be filled with heat-eliminating medium, can lower the temperature to High Temperature High Pressure ash particle.Heat exchange coil 4 can adopt water-cooled or vapour cold.Heat-eliminating medium can be water or steam.The bottom of pressure-pot 3 is provided with air distribution plate 5.In air distribution plate 5, pass into nitrogen, can effectively avoid ash particle to put up a bridge, guarantee that ash discharge is unobstructed, also play the effect of cooling ash particle simultaneously.Cyclonic separator 17 and U-shaped returning charge valve 18 are positioned at the outside of pressure-pot 3, and cyclonic separator 17 is communicated with the top of pressure-pot 3 by pipeline.The bottom of cyclonic separator 17 is communicated with the pan feeding port of U-shaped returning charge valve 18, and the discharging port of U-shaped returning charge valve 18 is communicated with pressure-pot 3.The bottom of pressure-pot 3 is connected with the top of transformation tank 10 with the second baiting valve 7 by the first baiting valve 6.The first baiting valve 6 is set and the second baiting valve 7, the first baiting valves 6 are material controllings, most of Material control is lived, but have gas leakage; The second baiting valve 7 is the gas of sealing, prevents that gas from leaking in a large number.The bottom of transformation tank 10 is connected with the top of ash-storing bin 15 with the second bleeder valve 12 by the first bleeder valve 11.The first bleeder valve 11 is set and the second bleeder valve 12, the first bleeder valves 11 are material controllings, most of Material control is lived, but have gas leakage; The second bleeder valve 12 is the gas of sealing, prevents that gas from leaking in a large number.The top inlet mouth of the first pipeline 16 is communicated with cyclonic separator 17, and the first pipeline 16 middle parts are provided with multi-step pressure reduction valve 19, the first pipeline 16 bottoms and are connected with the bottom of ash-storing bin 15 with the 4th bleeder valve 27 by the 3rd bleeder valve 26.The 3rd bleeder valve 26 is set and the 4th bleeder valve 27, the three bleeder valves 26 are material controllings, most of Material control is lived, but have gas leakage; The 4th bleeder valve 27 is the gas of sealing, prevents that gas from leaking in a large number.The top of the second pipeline 21 is communicated with pressure-pot 3, and the bottom of the second pipeline 21 is communicated with ash-storing bin 15.One end of the 3rd pipeline 22 is communicated with transformation tank 10, and the other end of the 3rd pipeline 22 is communicated with the first pipeline 16.The 3rd pipeline 22 middle parts are communicated with by the mouth 23 that crosses with the second pipeline 21.The 3rd pipeline 22 is provided with transformation tank purging valve 24, and this transformation tank purging valve 24 is between the second pipeline 21 and the first pipeline 16.The second pipeline 21 is provided with the first equilibrium valve 20 and the second equilibrium valve 25, the first equilibrium valves 20 are crossing between mouthful the 23 and second pipeline 21 tops, and the second equilibrium valve 25 is crossing between mouthful the 23 and second pipeline 21 bottoms.Multi-step pressure reduction valve 19 is between the first pipeline 16 tops and the 3rd pipeline 22.One end of the 4th pipeline 9 is communicated with transformation tank 10, and the 4th pipeline 9 is provided with transformation tank inflation valve 8.One end of the 5th pipeline 14 is communicated with ash-storing bin 15, and the 5th pipeline 14 is provided with ash-storing bin inflation valve 13.
Further, the described ash exhauster for High Temperature High Pressure ash particle, also comprises water jacket 2, and water jacket 2 is wrapped on the outer wall of opening for feed 1, and water jacket 2 is communicated with the water outlet of heat exchange coil 4.Water jacket 2 is set, can be cooling to opening for feed 1, avoid the high temperature of ash particle to damage opening for feed 1, play the effect of protection opening for feed 1.
Further, the described ash exhauster for High Temperature High Pressure ash particle, also comprise compressor 28, the bottom of described the first pipeline 16 is T-shaped, contains the first branch road, the second branch road and the 3rd branch road, wherein, the first branch road is connected with multi-step pressure reduction valve 19, the end of the second branch road is relative with the blowing mouth of compressor, and the 3rd branch road is connected with the bottom of ash-storing bin 15 with the 4th bleeder valve 27 by the 3rd bleeder valve 26, and the end of the 3rd branch road is ash output hole.
Increase compressor 28 is set, can guarantee that ash particle is from the ash output hole discharge of branch road, and improve ash discharge efficiency.
The ash discharge method of the above-mentioned ash exhauster for High Temperature High Pressure ash particle, comprises the following steps:
Step 10) reduces ash particle temperature: all valve original states are closes, when starting, charging opens multi-step pressure reduction valve 19, and pass into heat-eliminating medium to the heat exchange coil 4 that is arranged in pressure-pot 3 inside, to the air distribution plate 5 that is arranged in pressure-pot 3 bottoms, pass into nitrogen, then, the ash particle of High Temperature High Pressure is entered in pressure-pot 3 to the cooling ash particle of heat-eliminating medium and nitrogen by opening for feed 1; Gas flow the first pipeline 16 in pressure-pot 3, wherein, contains ash particle in gas, after cyclonic separator 17 separation, ash particle enters in the separated standpipe of cyclonic separator 17, then by U-shaped returning charge valve 18, separated ash particle is sent back in pressure-pot 3; Cyclonic separator 17 exit gass, by after 19 step-downs of multi-step pressure reduction valve, are discharged and are carried wind as the ash particle in ash-storing bin 15, from the first pipeline 16, discharge;
Step 20) to ash discharge in transformation tank 10: first, open transformation tank inflation valve 8, by transformation tank inflation valve 8, in transformation tank 10, be filled with nitrogen, when the gaseous tension in transformation tank 10 approaches the gaseous tension of pressure-pot 3, close transformation tank inflation valve 8, open the first equilibrium valve 20, until pressure-pot 3 and transformation tank 10 internal pressures equate; Then, open successively the second baiting valve 7 and the first baiting valve 6, the ash particle in pressure-pot 3 enters in transformation tank 10, last, closes successively the first equilibrium valve 20, the first baiting valve 6 and the second baiting valve 7;
Step 30) reduce ash particle pressure: open transformation tank purging valve 24, until the gaseous tension in transformation tank 10 while approaching the gaseous tension in ash-storing bin 15, is closed transformation tank purging valve 24;
Step 40) ash discharge: first, open the second equilibrium valve 25, until during pressure equilibrium between transformation tank 10 and ash-storing bin 15, open successively the second bleeder valve 12 and the first bleeder valve 11, ash particle enters ash-storing bin 15 from transformation tank 10 under action of gravity, then, close successively the first bleeder valve 11, the second bleeder valve 12 and the second equilibrium valve 25, then, open ash-storing bin inflation valve 13, in ash-storing bin 15, be filled with gas, subsequently, open successively the 4th bleeder valve 27 and the 3rd bleeder valve 26, by ash-storing bin inflation valve 13, in ash-storing bin 15, be filled with nitrogen, ash particle is under action of gravity and under the conveying of nitrogen, from ash-storing bin 15, enter in the first pipeline 16, from the ash output hole of the first pipeline 16, discharge.
Ash discharge method of the present invention to High Temperature High Pressure ash particle the step-down of having carried out once lowering the temperature process, thereby obtain the ash particle of low-temp low-pressure.The present invention's processing of first lowering the temperature: in pressure-pot 3, carry out cooling to ash particle.Specifically by being arranged on heat exchange coil 4 and the air distribution plate 5 in pressure-pot 3, cooling ash particle.Then carry out step-down processing: step-down is processed and carried out, and opens transformation tank purging valve 24, until the gaseous tension in transformation tank 10 approaches the gaseous tension in ash-storing bin 15 in transformation tank 10.By the step-down of once lowering the temperature, realized ash particle has been carried out to decrease temperature and pressure processing.In ash-storing bin, pressure can be 2MP-4MP, and concrete numerical value is determined by the fed distance of ash particle.The temperature of the ash particle of getting rid of in ash-storing bin 15 is lower than 400 degrees Celsius.The effect of multi-step pressure reduction valve 19 makes the pressure in pressure-pot 3 keep constant value, can not make because of inflation the pressure in pressure-pot 3 raise.
In the present invention, between pressure-pot 3 and transformation tank 10, between transformation tank 10 and ash-storing bin 15, be provided with respectively two valves.Wherein be positioned at the valve of top for material controlling, most of Material control is lived, but have gas leakage.Be positioned at the valve of below for sealed gas, prevent that gas from leaking in a large number.While enabling, first open the valve that is positioned at below, then open the valve that is positioned at top.While closing, first close the valve that is positioned at top, then close the valve that is positioned at below.The setting of two valves, is conducive to whole equipment safety operation.
In ash discharge process of the present invention, be first cooled in pressure-pot 3 medium and loosening wind of the ash particle of High Temperature High Pressure cools, then step-down in transformation tank 10, and storage in ash-storing bin 15, the ash particle of final low-temp low-pressure is discharged by strength.For the gasification technology of dry ash extraction ash discharge, oven for discharging solid ash method provided by the invention, can solve the difficult problem of High Temperature High Pressure ash discharge difficulty.
Claims (4)
1. the ash exhauster for High Temperature High Pressure ash particle, its feature is, this ash exhauster comprises pressure-pot (3), transformation tank (10), ash-storing bin (15), cyclonic separator (17), U-shaped returning charge valve (18), the first pipeline (16), the second pipeline (21), the 3rd pipeline (22), the 4th pipeline (9) and the 5th pipeline (14), the top of pressure-pot (3) is provided with opening for feed (1), in the inner chamber of pressure-pot (3), be provided with heat exchange coil (4), the water-in of heat exchange coil (4) and water outlet are positioned at the outside of pressure-pot (3), the bottom of pressure-pot (3) is provided with air distribution plate (5), cyclonic separator (17) and U-shaped returning charge valve (18) are positioned at the outside of pressure-pot (3), and cyclonic separator (17) is communicated with the top of pressure-pot (3) by pipeline, the bottom of cyclonic separator (17) is communicated with the pan feeding port of U-shaped returning charge valve (18), cyclonic separator exit gas is by after the step-down of multi-step pressure reduction valve, as the ash particle in ash-storing bin, discharge and carry wind, from the first pipeline, discharge,
The discharging port of U-shaped returning charge valve (18) is communicated with pressure-pot (3);
The bottom of pressure-pot (3) is connected with the top of transformation tank (10) with the second baiting valve (7) by the first baiting valve (6), and the bottom of transformation tank (10) is connected with the top of ash-storing bin (15) with the second bleeder valve (12) by the first bleeder valve (11);
The top inlet mouth of the first pipeline (16) is communicated with cyclonic separator (17), the first pipeline (16) middle part is provided with multi-step pressure reduction valve (19), and the first pipeline (16) bottom is connected with the bottom of ash-storing bin (15) with the 4th bleeder valve (27) by the 3rd bleeder valve (26);
The top of the second pipeline (21) is communicated with pressure-pot (3), the bottom of the second pipeline (21) is communicated with ash-storing bin (15), one end of the 3rd pipeline (22) is communicated with transformation tank (10), the other end of the 3rd pipeline (22) is communicated with the first pipeline (16), and the 3rd pipeline (22) middle part is communicated with by cross mouthful (23) with the second pipeline (21), the 3rd pipeline (22) is provided with transformation tank purging valve (24), and this transformation tank purging valve (24) is positioned between the second pipeline (21) and the first pipeline (16); The second pipeline (21) is provided with the first equilibrium valve (20) and the second equilibrium valve (25), the first equilibrium valve (20) is positioned at and crosses between mouthful (23) and the second pipeline (21) top, and the second equilibrium valve (25) is positioned at and crosses between mouthful (23) and the second pipeline (21) bottom; Multi-step pressure reduction valve (19) is positioned between the first pipeline (16) top and the 3rd pipeline (22);
One end of the 4th pipeline (9) is communicated with transformation tank (10), and the 4th pipeline (9) is provided with transformation tank inflation valve (8); One end of the 5th pipeline (14) is communicated with ash-storing bin (15), and the 5th pipeline (14) is provided with ash-storing bin inflation valve (13).
2. according to the ash exhauster for High Temperature High Pressure ash particle claimed in claim 1, its feature is, also comprises water jacket (2), and water jacket (2) is wrapped on the outer wall of opening for feed (1), and water jacket (2) is communicated with the water outlet of heat exchange coil (4).
3. according to the ash exhauster for High Temperature High Pressure ash particle claimed in claim 1, its feature is, also comprise compressor (28), the bottom of described the first pipeline (16) is inverted T-shaped, contain the first branch road, the second branch road and the 3rd branch road, wherein, the first branch road is connected with multi-step pressure reduction valve (19), the end of the second branch road is relative with the blowing mouth of compressor, the 3rd branch road is connected with the bottom of ash-storing bin (15) with the 4th bleeder valve (27) by the 3rd bleeder valve (26), and the end of the 3rd branch road is ash output hole.
4. utilize an ash discharge method for the ash exhauster for High Temperature High Pressure ash particle described in claim 1, its feature is, this ash discharge method comprises the following steps:
Step 10) reduces ash particle temperature: all valve original states are closes, when starting, charging opens multi-step pressure reduction valve (19), and pass into heat-eliminating medium to being arranged in the inner heat exchange coil (4) of pressure-pot (3), to the air distribution plate (5) that is arranged in pressure-pot (3) bottom, pass into nitrogen, then, the ash particle of High Temperature High Pressure is entered in pressure-pot (3) to the cooling ash particle of heat-eliminating medium and nitrogen by opening for feed (1); Gas flow the first pipeline (16) in pressure-pot (3), wherein, in gas, contain ash particle, after cyclonic separator (17) separation, ash particle enters in the separated standpipe of cyclonic separator (17), by U-shaped returning charge valve (18), separated ash particle is sent back in pressure-pot (3) again; Cyclonic separator (17) exit gas, by after multi-step pressure reduction valve (19) step-down, is discharged and is carried wind as the ash particle in ash-storing bin (15), from the first pipeline (16), discharges;
Step 20) to the middle ash discharge of transformation tank (10): first, open transformation tank inflation valve (8), by transformation tank inflation valve (8), in transformation tank (10), be filled with nitrogen, when the gaseous tension in transformation tank (10) approaches the gaseous tension of pressure-pot (3), close transformation tank inflation valve (8), open the first equilibrium valve (20), until pressure-pot (3) and transformation tank (10) internal pressure equate; Then, open successively the second baiting valve (7) and the first baiting valve (6), the ash particle in pressure-pot (3) enters in transformation tank (10), last, closes successively the first equilibrium valve (20), the first baiting valve (6) and the second baiting valve (7);
Step 30) reduce ash particle pressure: open transformation tank purging valve (24), until the gaseous tension in transformation tank (10) while approaching the gaseous tension in ash-storing bin (15), is closed transformation tank purging valve (24);
Step 40) ash discharge: first, open the second equilibrium valve (25), until during pressure equilibrium between transformation tank (10) and ash-storing bin (15), open successively the second bleeder valve (12) and the first bleeder valve (11), ash particle enters ash-storing bin (15) from transformation tank (10) under action of gravity, then, close successively the first bleeder valve (11), the second bleeder valve (12) and the second equilibrium valve (25), then, open ash-storing bin inflation valve (13), in ash-storing bin (15), be filled with gas, subsequently, open successively the 4th bleeder valve (27) and the 3rd bleeder valve (26), by ash-storing bin inflation valve (13), in ash-storing bin (15), be filled with nitrogen, ash particle is under action of gravity and under the conveying of nitrogen, from ash-storing bin (15), enter in the first pipeline (16), from the ash output hole of the first pipeline (16), discharge.
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| CN103528055B (en) * | 2013-10-25 | 2016-05-11 | 江苏晟宜环保科技有限公司 | Pressurize grey residues processing technique and system |
| CN104326269B (en) * | 2014-09-09 | 2016-10-19 | 东南大学 | A kind of for High Temperature High Pressure powder granule cooling decompressing and continuous discharge method |
| CN110813511A (en) * | 2019-11-18 | 2020-02-21 | 衡阳县海华水泥有限责任公司 | Cement grinding aid addition system |
| CN111996037A (en) * | 2020-08-25 | 2020-11-27 | 哈尔滨锅炉厂有限责任公司 | Positive pressure cold ash system for biomass fluidized bed gasification furnace |
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