CN209652253U - A kind of cooling dreg removing system of coal ash - Google Patents

Abstract

The utility model discloses a kind of cooling dreg removing systems of coal ash, it includes cold slag ladle, receives slag ladle and deslagging tank, the outlet of lime-ash pipe extends to the interior bottom of cold slag ladle, ash temperature sensor is installed with inside the top of lime-ash pipe, cooling water pipe is connected to the water inlet pipe of cold slag ladle, water inlet control valve is installed on water inlet pipe, the top of lime-ash pipe inside cold slag ladle is communicated with gas tube, cooling tracheae is connected to gas tube, it is installed with ventilating control valve on gas tube, cold slag ladle pressure sensor and cold slag ladle temperature sensor are installed at the top of cold slag ladle.The utility model has the advantage of, carbon dioxide is passed through inside to lime-ash pipe instead of automatic steam control deslagging speed, and lime-ash is once cooled down, reduce the usage amount of steam, reduce the input cost of steam manufacturing equipment and feed coal, and after carbon dioxide enters fluidized-bed gasification furnace, it can inhibit carbon in fluidized-bed gasification furnace and react generation carbon dioxide with oxygen, promote the progress of carbon and vapor reaction.

Description

A kind of cooling dreg removing system of coal ash

Technical field:

The utility model relates to slag-draining devices, and in particular to a kind of cooling dreg removing system of coal ash.

Background technique:

Gasification reaction generation raw gas occurs for coal dust and gasifying agent in fluidized-bed gasification furnace, generates high temperature after coal dust gasification Lime-ash.In order to carry out outlet to the lime-ash in fluidized-bed gasification furnace, generally it is sequentially communicated on the slag-drip opening of fluidized-bed gasification furnace Shock chamber and deslagging tank, tapping process are as follows: the lime-ash in fluidized-bed gasification furnace enters slagging channel through slag-drip opening, to slagging channel Interior logical automatic steam control deslagging speed, while being passed through cooling water into slagging channel and the lime-ash during decline is cooled down, ash Slag and cooling water are fallen into shock chamber together from slagging channel, and it is outer that shock chamber inside lime-ash after cooling passes through the progress of deslagging tank again Row；In the above process, it is general using into slagging channel plus the method for superheated steam controls its deslagging speed, pass through to The mode for leading to cooling water in slagging channel cools down lime-ash, and 90% heat is transmitted to cold in a manner of sensible heat in lime-ash But in water, cooling water carries out forced circulation by circulating pump, is removed its heat using heat exchanger.

Above-mentioned slag-draining device has the following problems in use: 1, when lime-ash needs one section cooling in shock chamber Between, and the continuous slag input in shock chamber, it needs to carry out using by circulating pump when the indoor Coolant-Level of Quench is more than water outlet Forced circulation can contain part lime-ash in cooling water, will cause the blocking of circulating pump and heat exchanger during circulating cooling, make Slag-draining device operating interruptions are obtained, deslagging efficiency is influenced；2, the lime-ash in deslagging tank falls into storage slag device by self weight, stores up slag device It can be only placed at below deslagging tank, equipment riding position has limitation, and residue extraction mechanism whole height is higher, dimension not easy to overhaul Shield；3, to automatic steam control deslagging speed is passed through inside slagging channel, the usage amount of steam is increased, steam needs to pass through steam copper Furnace production, increases the input cost of equipment and feed coal；4, lead to cooling water into slagging channel to cool down lime-ash, clinker It cannot be totally submerged in cooling water, cooling effect is poor.

Utility model content:

The purpose of this utility model is to provide one kind can reduce for steam consumption outside fluidized-bed gasification furnace, by ash Add room temperature carbon dioxide gas in slag pipe, inhibit the generation of carbon dioxide in gasification reaction, improves the coal ash of raw coal gasification efficiency Slag cools down dreg removing system.

The utility model is implemented by following technical solution: a kind of cooling dreg removing system of coal ash comprising cold slag ladle receives slag Tank and deslagging tank, the outlet of lime-ash pipe extend to the interior bottom of the cold slag ladle, are installed with inside the top of the lime-ash pipe Ash temperature sensor, cooling water pipe are connected to the water inlet pipe of the cold slag ladle, are installed on the water inlet pipe into water and are controlled Valve, the top of the lime-ash pipe inside the cold slag ladle are communicated with gas tube, and cooling tracheae is connected to the gas tube, In It is installed with ventilating control valve on the gas tube, cold slag ladle pressure sensor and cold slag ladle temperature are installed at the top of the cold slag ladle Spend sensor；

The slag-drip opening of the cold slag ladle bottom is connected to the slag inlet at the top of the receipts slag ladle, at the top for receiving slag ladle It is installed with water balance valve；The slag-drip opening for receiving slag ladle bottom is connected by the first residual cake valve and the slag inlet of the deslagging tank top It is logical, it is installed with relief valve and deslagging pressure tank sensor at the top of the deslagging tank, is installed in the side of the deslagging tank Deslagging liquid level sensor is installed with the second residual cake valve in the bottom of the deslagging tank, and second residual cake valve and deslagging general pipeline connect It is logical, water injection valve is installed on the deslagging tank above second residual cake valve.

Further, it is connected with communicating pipe between the cooling water pipe and the water injection valve, is filled on the communicating pipe Equipped with control valve.

Further, the communicating pipe of the outlet end of the control valve is connected to by Sludge washing-out valve with the deslagging general pipeline, The inlet communication of the outlet end of the relief valve and the deslagging general pipeline.

Further, the outlet end with the outlet end of the control valve of the water balance valve are connected to the communicating pipe, institute The communicating pipe for stating the input end of control valve is connected to by receiving slag ladle flushing valve with the input end of the water balance valve.

Further, the ash temperature sensor, the cold slag ladle temperature sensor, the cold slag ladle pressure sensing Device, the deslagging pressure tank sensor, the deslagging liquid level sensor are electrically connected with the input terminal of controller, the controller Output end be electrically connected respectively with the water inlet control valve, the ventilating control valve, the relief valve.

Further, the cold slag ladle includes tank body, is equipped with the lime-ash pipe, the ash vertically at the middle part of the tank body The top of slag pipe extends to the tip exterior of the tank body, is formed between the bottom end of the lime-ash pipe and the bottom end of the tank body logical Road；The inside of the tank body below the gas tube is equipped with high liquid level sensor；Below the high liquid level sensor On the lime-ash pipe, along the circumferential direction on offer several balance holes, the tank interior below the balance hole is equipped with Low liquid level sensor, the high liquid level sensor and the low liquid level sensor with the water inlet control valve and the water balance Valve electrical connection；It is communicated with the water inlet pipe in the side of the tank body, is equipped with and the water inlet in the outer cover of the lime-ash pipe The annular water distributor of pipe connection offers several water distributing pores on the tube wall of the annular water distributor.

Further, the lime-ash pipe includes the straight tube heat exchanging segment being sequentially communicated from top to bottom, expansion tube vaporization section and straight Pipe deslagging section, the gas tube are arranged in the straight tube heat exchanging segment, and the balance hole is provided with the upper of the expansion tube vaporization section Portion.

Further, insertion is equipped with gas distribution pipe on the lime-ash pipe above the high liquid level sensor, described to fill Tracheae is connected to by the gas distribution pipe with the lime-ash pipe；The gas distribution pipe includes that the sintering metal filter core of annular and fission are arranged Tube body outside the sintering metal filter core, the tube body insertion is mounted on the lime-ash pipe, and the top of the tube body Pass through flange respectively with bottom end to connect with the lime-ash pipe, the gas tube is connected to the tubular body.

Further, flame retardant coating is provided on the inner wall of the lime-ash pipe outside the tank body.

Further, it is fixed with grate plate between the lower part outer wall of the lime-ash pipe and the inner wall of the tank body, in institute Tank wall is stated equipped with manhole.

Further, the gas tube is carbon dioxide gas tube.

The advantages of the utility model: 1, the cooling water at lime-ash intraluminal fluid face constantly flashes to steam, steam to lime-ash into Row secondary cooling, and steam enters fluidized-bed gasification furnace by lime-ash pipe and is utilized, and reduces 5% extraneous steam supply Amount, reduces the input cost of steam；The cooling water that low temperature is had after cooling water evaporation fills into, and does not need to force to follow to cooling water Ring cooling, avoids the blocking that circulating pump and heat exchanger are caused during circulating cooling, ensure that the suitable of slag-draining device work Benefit carries out, and ensure that deslagging efficiency；2, the lime-ash in deslagging general pipeline is conveyed by high pressure water, can be conveyed along deslagging general pipeline Into the storage slag device of the total pipe end of deslagging, so that the placement location of storage slag device is unrestricted, the whole of residue extraction mechanism is reduced Body height, easy access maintenance；3, to being passed through carbon dioxide inside lime-ash pipe instead of automatic steam control deslagging speed, and to lime-ash into Row is primary cooling, reduces the usage amount of steam, reduces the input cost of steam manufacturing equipment and feed coal, and titanium dioxide After carbon enters fluidized-bed gasification furnace, so that the gas concentration lwevel in fluidized-bed gasification furnace increases, fluidized-bed gasification furnace can inhibit Interior carbon is reacted with oxygen generates carbon dioxide, promotes the progress of carbon and vapor reaction, improves the available gas ingredient of raw gas Content；4, it after lime-ash enters tank body, falls into and is immersed in cooling water, cooling water can be fully cooled lime-ash, guarantee Cooling effect；5, several balance holes are offered on the middle part circumferencial direction of lime-ash pipe, tank body top and lime-ash can be balanced Pressure inside pipe, cooling water pressure fluidized bed gasification furnace when tank body upper pressure being avoided to be greater than lime-ash pipe internal pressure guarantee Safety in production；6, lime-ash pipe includes the straight tube heat exchanging segment being sequentially communicated from top to bottom, expansion tube vaporization section and straight tube deslagging section, is expanded Diameter pipe vaporization section and the diameter of straight tube deslagging section are greater than the diameter of straight tube heat exchanging segment, can limit high-temperature ash and expand in cooling water It dissipates, the flying dust diffusion for being not readily dissolved in water in lime-ash can be limited, force its wetting；And it sufficiently collects cooling water and inhales thermogenetic steaming Vapour, steam enter fluidized-bed gasification furnace as gasifying agent by lime-ash pipe and are utilized, and reduce the input cost of gasifying agent.

Detailed description of the invention:

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of cold slag ladle；

Fig. 3 is the structural schematic diagram of gas distribution pipe.

Cold slag ladle 1, receipts slag ladle 2, deslagging tank 3, lime-ash pipe 4, ash temperature sensor 5, cooling water pipe 6, water inlet pipe 7, into Water control valve 8, cooling tracheae 9, gas tube 10, ventilating control valve 11, cold slag ladle pressure sensor 12, water balance valve 13, first Residual cake valve 14, relief valve 15, deslagging pressure tank sensor 16, deslagging liquid level sensor 17, water injection valve 18, the second residual cake valve 19, Deslagging general pipeline 20, communicating pipe 21, control valve 22, Sludge washing-out valve 23 receive slag ladle flushing valve 24, controller 25, tank body 26, gas distribution pipe 27, high liquid level sensor 28, balance hole 29, low liquid level sensor 30, manhole 31, annular water distributor 32, water distributing pore 33, straight tube changes Hot arc 34, expansion tube vaporization section 35, straight tube deslagging section 36, sintering metal filter core 37, tube body 38, flame retardant coating 39, grate plate 40 are cold Slag ladle temperature sensor 41.

Specific embodiment:

Embodiment 1:

As shown in Figure 1-3, a kind of cooling dreg removing system of coal ash comprising cold slag ladle 1 receives slag ladle 2 and deslagging tank 3,

Cold slag ladle 1 includes tank body 26, is equipped with lime-ash pipe 4 vertically at the middle part of tank body 26, the top of lime-ash pipe 4 extends to tank The tip exterior of body 26, the outlet of lime-ash pipe 4 extend to the interior bottom of cold slag ladle 1, the bottom end of lime-ash pipe 4 and the bottom end of tank body 26 Between form channel, lime-ash is fallen into tank body 26 by lime-ash pipe 4 and is cooled down.

Lime-ash pipe 4 includes straight tube heat exchanging segment 34, expansion tube vaporization section 35 and the straight tube deslagging section being sequentially communicated from top to bottom 36, the diameter of expansion tube vaporization section 35 and straight tube deslagging section 36 is greater than the diameter of straight tube heat exchanging segment 34, can limit high-temperature ash It is spread in cooling water, the flying dust diffusion for being not readily dissolved in water in lime-ash can be limited, force its wetting.

The top of lime-ash pipe 4 inside cold slag ladle 1 is communicated with gas tube 10, and gas tube 10 is arranged in straight tube heat exchanging segment 34, cooling tracheae 9 is connected to gas tube 10, and when lime-ash flows through straight tube heat exchanging segment 34, gas tube 10 is passed through cooling into lime-ash pipe 4 Gas once cools down lime-ash.Continue through primary lime-ash after cooling along 4 downlink of lime-ash pipe, when with the cooling in lime-ash pipe 4 When water contacts, cooling water heat absorption evaporation generates a large amount of steam, and steam carries out secondary cooling to the lime-ash in lime-ash pipe 4, to lime-ash Steam after carrying out secondary cooling is utilized by lime-ash pipe 4 into fluidized-bed gasification furnace, and 5% extraneous steam confession is reduced Ying Liang reduces the input cost of gasifying agent, and the cooling water that low temperature is had after cooling water evaporation fills into, and does not need strong to cooling water Circulation temperature lowering processed avoids the blocking that circulating pump and heat exchanger are caused during circulating cooling, ensure that slag-draining device works Go on smoothly, ensure that deslagging efficiency.

Insertion is equipped with gas distribution pipe 27 on lime-ash pipe 4, and gas tube 10 is connected to by gas distribution pipe 27 with lime-ash pipe 4, gas distribution pipe 27 include the sintering metal filter core 37 and the seperated tube body 38 being set in outside sintering metal filter core 37 of annular, sintering metal filter core 37 can prevent lime-ash from entering the inside of tube body 38, avoid blocking gas tube 10, and the insertion of tube body 38 is mounted on lime-ash pipe 4, and The top and bottom end of tube body 38 pass through flange respectively and connect with lime-ash pipe 4, are connected to inside gas tube 10 and tube body 38.In gas tube It is installed with ventilating control valve 11 on 10, ash temperature sensor 5, ash temperature sensor 5 are installed with inside 4 top of lime-ash pipe The temperature of the lime-ash of fluidized-bed gasification furnace discharge is detected, the preset value Shi Huixiang ventilating control valve 11 that temperature is higher than controller 25 is sent out It send aperture to tune up signal, increases the inlet of cooling air.Gas tube 10 is carbon dioxide gas tube, uses carbon dioxide gas generation For steam as cooling air, reduce the usage amount of steam, reduces the input cost of steam manufacturing equipment and feed coal, and After carbon dioxide enters fluidized-bed gasification furnace, so that the gas concentration lwevel in fluidized-bed gasification furnace increases, fluidized bed can inhibit Carbon is reacted with oxygen in gasification furnace generates carbon dioxide, promotes the progress of carbon and vapor reaction, improves effective gas of raw gas Body component content.

It is communicated with water inlet pipe 7 in the side of tank body 26, cooling water pipe 6 is connected to water inlet pipe 7, is passed through into cold slag ladle 1 cold But water, the lime-ash after secondary cooling falls into tank body 26 to be immersed in cooling water to be cooled down three times.It is installed on water inlet pipe 7 Water inlet control valve 8 is installed with cold slag ladle temperature sensor 41 at the top of cold slag ladle 1, and cold slag ladle temperature sensor 41 is for examining The temperature of cold 1 inside cooling water of slag ladle and lime-ash is surveyed, the preset value Shi Huixiang water inlet control valve 8 that temperature is higher than controller 25 is sent Aperture tunes up signal, increases the inlet of cooling water.

It is equipped with the annular water distributor 32 being connected to water inlet pipe 7 in the outer cover of lime-ash pipe 4, in the tube wall of annular water distributor 32 On offer several water distributing pores 33, it is ensured that cooling water is uniformly added into tank body 26, guarantees 26 each section liquid level of tank body, environment temperature Uniformity, conducive to the regulation of cooling system temperature, pressure.Water distributing pore 33 is provided with all directions of annular water distributor 32, cold But when water is sprayed on 26 side wall of tank body, 26 side wall of tank body can be cooled down.

High liquid level sensor 28, high liquid level sensing are equipped in the inside of the tank body 26 of the lower section of gas distribution pipe 27 and gas tube 10 The lower section of gas tube 10 is arranged in device 28, and avoiding 4 inside liquid level of lime-ash pipe is more than gas tube 10, guarantees that cooling air normally enters ash Slag pipe 4；On lime-ash pipe 4 below high liquid level sensor 28, along the circumferential direction on offer several balance holes 29, balance hole 29 It is provided with the top of expansion tube vaporization section 35.The pressure inside 26 top of tank body and lime-ash pipe 4 is balanced, 26 top of tank body is avoided to press Cooling water is pressed into fluidized-bed gasification furnace by lime-ash pipe 4 when power is greater than 4 internal pressure of lime-ash pipe, guarantees safety in production；It is balancing Be equipped with low liquid level sensor 30 inside the tank body 26 of the lower section of hole 29, high liquid level sensor 28 and low liquid level sensor 30 with water inlet Control valve 8 and the water balance valve 13 received on slag ladle 2 are electrically connected, and the liquid level that high liquid level sensor 28 is used to detect inside tank body 26 is No to reach liquid level upper limit value, whether the liquid level that low liquid level sensor 30 is used to detect inside tank body 26 reaches bottom level limit；When low When liquid level sensor 30 detects that the Coolant-Level inside cold slag ladle 1 reaches preset bottom level limit, tunes up and controlled into water The aperture of valve 8 turns the aperture of water balance valve 13 down, carries out moisturizing to tank body 26；When high liquid level sensor 28 detects cooling water When liquid level reaches preset liquid level upper limit value, the aperture of water inlet control valve 8 is turned down, tune up the aperture of water balance valve 13, make tank body Coolant-Level inside 26 remains between minimum liquid level and highest liquid level, and cinder is enable to be immersed in cooling water, Guarantee good cooling effect.The function of high liquid level sensor 28 and low liquid level sensor 30 in the present embodiment is detection liquid level It highly, is the conventional func of liquid level sensor, model MC1151/3351DP.

It is fixed with grate plate 40 between the lower part outer wall of lime-ash pipe 4 and the inner wall of tank body 26, can be prevented in cooling water Lime-ash float up the balance hole 29 on blocking lime-ash pipe 4, guarantee the pressure balance inside 26 top of tank body and lime-ash pipe 4. It is equipped with manhole 31 in 26 side wall of tank body, convenient for overhauling inside tank body 26.The top of cold slag ladle 1 is installed with cold slag ladle pressure Sensor 12, cold slag ladle pressure sensor 12 are used to detect the air pressure inside cold slag ladle 1.

The slag-drip opening of cold 1 bottom of slag ladle is connected to the slag inlet for receiving 2 top of slag ladle, is installed with water at the top for receiving slag ladle 2 Balanced valve 13, cooling water and lime-ash in cold slag ladle 1, which enter, to be received in slag ladle 2, and lime-ash deposits to bottom receiving in slag ladle 2, is beaten Boiled water balanced valve 13 can will receive the extra water in 2 top of slag ladle and be discharged；The moisture being discharged through water balance valve 13 is two-way, is made all the way For the water supply source of deslagging tank 3, another way is utilized as the deslagging water source of deslagging general pipeline 20.

The slag-drip opening for receiving 2 bottom of slag ladle is connected to by the first residual cake valve 14 with the slag inlet at 3 top of deslagging tank, in deslagging tank 3 top is installed with relief valve 15 and deslagging pressure tank sensor 16, is installed with deslagging liquid level sensor in the side of deslagging tank 3 17, it is installed with the second residual cake valve 19 in the bottom of deslagging tank 3, the second residual cake valve 19 is connected to deslagging general pipeline 20, in the second deslagging Water injection valve 18 is installed on the deslagging tank 3 of 19 top of valve；By the moisturizing into deslagging tank 3 of water injection valve 18, makes deslagging tank 3 and receive slag Pressure in tank 2 is balanced, and detects the air pressure inside deslagging tank 3 by deslagging pressure tank sensor 16, when deslagging tank 3 fills the water, If the detected value of deslagging pressure tank sensor 16 is greater than the detected value of cold slag ladle pressure sensor 12, controller 25 controls pressure release Valve 15 is opened, and carries out pressure release to deslagging tank 3, until the detected value of deslagging pressure tank sensor 16 is equal to cold slag ladle pressure sensor 12, relief valve 15 is closed, at this point, forming a high pressure vapor space at the top of deslagging tank 3, deslagging liquid level sensor 17 is for examining Liquid level when surveying water filling inside deslagging tank 3 is closed when the detected value of deslagging liquid level sensor 17 reaches the preset value of controller 25 Water injection valve 18 is closed, water filling is stopped；After water filling terminates, the first residual cake valve 14 is periodically opened, the lime-ash for receiving bottom in slag ladle 2 is fallen into Deslagging tank 3；When deslagging 3 deslagging of tank, relief valve 15 is first opened, pressure release is carried out to deslagging tank 3, hypertonia is avoided to impact pipeline It is excessive, guarantee safe deslagging, the pressure in scum pipe 3 can detect by deslagging pressure tank sensor 16, the pressure in scum pipe 3 Power is let out to system normal pressure, and relief valve 15 is closed, and opens the second residual cake valve 19, Sludge washing-out valve 23, the lime-ash warp in deslagging tank 3 Second residual cake valve 19 enters in deslagging general pipeline 20；When 3 deslagging of deslagging tank is unsmooth, open water injection valve 18, to deslagging tank 3 inside infuse Water carries out block clearing, until deslagging terminates.

It is connected with communicating pipe 21 between cooling water pipe 6 and water injection valve 18, control valve 22 is installed on communicating pipe 21, is beaten Open control valve 22 and water injection valve 18, water supply source of the part cooling water that cooling water pipe 6 is sent as deslagging tank 3, control valve 22 The communicating pipe 21 of outlet end is connected to by Sludge washing-out valve 23 with deslagging general pipeline 20, and Sludge washing-out valve 23, the part that cooling water pipe 6 is sent are opened Cooling water flows through pipeline to lime-ash and is rinsed or using cooling water as the deslagging water of deslagging general pipeline 20, the outlet end of relief valve 15 With the inlet communication of deslagging general pipeline 20, the gas that deslagging tank 3 is discharged is discharged into deslagging general pipeline 20, disturbs to lime-ash, guarantees ash Slag has good mobility in deslagging general pipeline 20.

The outlet end of water balance valve 13 is connected to the communicating pipe 21 of 22 outlet end of control valve, opens water balance valve 13 and flushing cinder Deslagging water of the cooling water after receiving the heat exchange that slag ladle 2 is discharged as deslagging general pipeline 20 can be used in valve 23；Open water balance valve 13 With water injection valve 18, water supply source of the cooling water after receiving the heat exchange that slag ladle 2 is discharged as deslagging tank 3, control valve 22 can be used The communicating pipe 21 of input end is connected to by receiving slag ladle flushing valve 24 with the input end of water balance valve 13, is opened and is received slag ladle flushing valve 24, the part cooling water that cooling water pipe 6 is sent can be used, the inlet line of water balance valve 13 is rinsed.

Ash temperature sensor 5, cold slag ladle temperature sensor 41, cold slag ladle pressure sensor 12, deslagging pressure tank sensing Device 16, deslagging liquid level sensor 17 are electrically connected with the input terminal of controller 25, and the output end of controller 25 is controlled with water inlet respectively Valve 8 processed, ventilating control valve 11, relief valve 15 are electrically connected.Cold slag ladle temperature sensor 41 and ash temperature in the present embodiment pass The function of sensor 5 is detection temperature, is the conventional func of temperature sensor, model MCT80Y；Cold slag in the present embodiment The function of pressure tank sensor 12 and deslagging pressure tank sensor 16 is detection tank internal pressure, is the conventional function of pressure sensor Can, model MC1151/3351GP；The function of deslagging liquid level sensor 17 in the present embodiment is detection liquid level, is The conventional func of liquid level sensor, model MC1151/3351DP；It is connect according to the function of controller 25 in the present embodiment It receives detected value to control respective valves, model S7-400 SIEMENS PLC controller.It is ash temperature sensor 5, cold Slag ladle temperature sensor 41, cold slag ladle pressure sensor 12, deslagging pressure tank sensor 16, deslagging liquid level sensor 17 will test Value is transferred to controller 25, and controller 25 is accordingly adjusted water inlet control valve 8, ventilating control valve 11, relief valve 15, real Now to the control of the temperature of dreg removing system, pressure, labor intensity is reduced, is improved work efficiency.

The course of work:

The lime-ash of fluidized gasification furnace interior is entered by lime-ash pipe 4 inside the tank body 26 of cold slag ladle 1, in lime-ash pipe 4 Straight tube heat exchanging segment 34 once cools down lime-ash by the carbon dioxide cooling air that sintering metal filter core 37 is discharged, cooling air pair Lime-ash carries out being advanced into fluidized-bed gasification furnace along lime-ash pipe 4 after once cooling down.Primary lime-ash after cooling continues along lime-ash pipe 4 It moves downward, after contacting with cooling water, cooling water evaporation generates a large amount of steam, and expansion tube vaporization section 35 and straight tube deslagging section 36 limit Preparing high-temp lime-ash is spread in cooling water, is sufficiently collected cooling water and is inhaled thermogenetic steam, and steam is moved upwards along lime-ash pipe 4, Secondary cooling is carried out to lime-ash, steam is advanced into fluidized-bed gasification furnace along lime-ash pipe 4 to after lime-ash progress secondary cooling.Lime-ash After falling into cooling water, cooling water cools down it three times.The water distributing pore 33 that cooling water passes through on annular water distributor 32 sprays, Cooling water in tank body 26 is supplemented, while having part cooling water and being sprayed on the inner wall of tank body 26, is glided along inner wall, it is right The inner wall of tank body 26 is cooled down.

26 upper space of tank body is connected to lime-ash pipe 4 by balance hole 29, to guarantee the pressure in tank body 1 and lime-ash pipe 2 Dynamic balance, the grate plate 40 between the lower part outer wall of lime-ash pipe 4 and the inner wall of tank body 26 can prevent the lime-ash in cooling water Float up blocking balance hole 29.

It is directly entered by lime-ash after cooling three times by slag-drip opening and receives slag ladle 2, the lime-ash inside deslagging tank 3 drains Afterwards, the second residual cake valve 19 is closed, water injection valve 18 is opened and starts to fill the water, when the detected value of deslagging liquid level sensor 17 reaches controller When 25 preset value, water injection valve 18 is closed, when the detected value of deslagging pressure tank sensor 16 is greater than cold slag ladle pressure sensor 12 Detected value when, controller 25 can to relief valve 15 send open signal, to deslagging tank 3 carry out pressure release, when deslagging pressure tank pass The detected value of sensor 16 is equal to cold slag ladle pressure sensor 12, closes relief valve 15；

After adjusting liquid level and pressure inside deslagging tank 3 by above-mentioned steps, the first residual cake valve 14 is opened, deslagging tank 3 pushes up The high pressure gas in portion be moved upwardly into receive slag ladle 2, receive 2 lower part of slag ladle lime-ash it is disturbed and under move up into deslagging tank 3；Deslagging After tank 3 is fed, the first residual cake valve 14 is closed, opens relief valve 15, deslagging tank 3 is let out to normal pressure, and the second residual cake valve is opened 19 and Sludge washing-out valve 23, lime-ash smoothly taken away by high pressure injection water, storage slag device is flowed to along deslagging general pipeline 20, along deslagging general pipeline 20 Lime-ash is conveyed by high pressure injection water, can be transported in the storage slag device of 20 end deslagging general pipeline along deslagging general pipeline 20, So that the placement location of storage slag device is unrestricted；In the slag input and tapping process of deslagging tank 3, water balance valve 13 is always out State is opened, the conveying water of water and deslagging general pipeline 20 that deslagging tank 3 injects is to receive slag ladle 2 to pass through the water that water balance valve 13 is discharged, It is made full use of to the water that slag ladle 2 is discharged is received, reduces the usage amount of pure water resource.

The conveying water of water and deslagging general pipeline 20 that deslagging tank 3 injects passes through the water that water balance valve 13 is discharged by slag ladle 2 is received It provides, certain lime-ash is contained in the water that water balance valve 13 is discharged, time opening is needed to receive slag ladle flushing valve 24 and control valve 22 The pipeline that pulp water flows through is rinsed, the pipeline blocking for preventing pulp water from flowing through, the practical work that flushing cycle is run according to system Make situation to determine.

When the Coolant-Level inside low liquid level sensor 30 detects cold slag ladle 1 reaches preset bottom level limit, The aperture for tuning up water inlet control valve 8 turns the aperture of water balance valve 13 down, carries out moisturizing to tank body 26；When high liquid level sensor 28 When detecting that Coolant-Level reaches preset liquid level upper limit value, the aperture of water inlet control valve 8 is turned down, tune up water balance valve 13 Aperture remains at the Coolant-Level inside tank body 26 between minimum liquid level and highest liquid level, cinder is enable to submerge In cooling water, guarantee good cooling effect.

When the detected value that controller 25 receives cold slag ladle temperature sensor 41 is more than preset value, controller 25 can Xiang Jinshui Control valve 8 sends aperture and tunes up signal, increases the inlet of cooling water；When controller 25 receives the inspection of ash temperature sensor 5 When measured value is more than preset value, controller 25 can send aperture to ventilating control valve 11 and tune up signal, increase the inlet of cooling air.

Embodiment 2:

The cooling Slagoff method of a kind of coal ash carried out using the cooling dreg removing system of one of embodiment 1 coal ash, The following steps are included: (1) cooling air once cools down, (2) secondary steam is cooling, and (3) cooling water cools down three times, (4) deslagging tank Slag input and deslagging；Wherein,

(1) cooling air once cools down: 850 DEG C -900 DEG C of lime-ash being discharged from fluidized-bed gasification furnace enters lime-ash pipe 4, cold But air carbon dioxide enters the tube body 38 of gas distribution pipe 27 by gas tube 10, then is uniformly sprayed by sintering metal filter core 37, right Lime-ash in lime-ash pipe 4 is once cooled down, and is cooled to 450 DEG C -550 DEG C of lime-ash and is moved down along lime-ash pipe 4, changes with lime-ash Carbon dioxide after heat is moved upwardly into fluidized-bed gasification furnace along lime-ash pipe 4；Automatic steam control deslagging is replaced using carbon dioxide On the one hand speed reduces the usage amount of steam, reduce the input cost of steam manufacturing equipment and feed coal, while titanium dioxide The reduction reaction that carbon residue in carbon and high-temperature ash absorbs heat, further cools down to lime-ash, and another aspect carbon dioxide enters It can inhibit carbon in fluidized-bed gasification furnace after fluidized-bed gasification furnace and react generation carbon dioxide with oxygen, reduce the production of carbon dioxide Progress that is raw, promoting carbon to react with vapor, improves the available gas ingredient of raw gas；

When the detected value that controller 25 receives ash temperature sensor 5 is greater than 500 DEG C, controller 25 can be to ventilating control Valve 11 sends aperture and tunes up signal, increases the intake of cooling air carbon dioxide, to reduce the temperature of lime-ash；

(2) secondary steam is cooling: primary lime-ash after cooling is moved down along lime-ash pipe 4, is contacted with cooling water, cooling water Cooling water at liquid level absorbs the heat of vaporization of lime-ash, and the steam for evaporating generation is moved up along lime-ash pipe 4, carries out two to lime-ash Secondary cooling, the temperature of lime-ash is 200-300 DEG C after secondary cooling, with the steam after lime-ash heat exchange along lime-ash pipe 4 move up into Enter gasification furnace to use as gasifying agent, reduces the extraneous supply of steam, reduce the input cost of steam；Cooling water evaporation After have low-temperature cooling water and fill into, do not need to cool down to cooling water forced circulation, avoid and cause to follow during circulating cooling The blocking of ring pump and heat exchanger, ensure that going on smoothly for slag-draining device work, ensure that deslagging efficiency；

(3) cooling water cools down three times: lime-ash is immersed in cooling water after entering cooling water, and cooling water can carry out lime-ash It is fully cooled, ensure that cooling effect, cooling water cool down it three times, be cooled to 150 DEG C or less；

When the detected value that controller 25 receives cold slag ladle temperature sensor 41 is greater than 150 DEG C, controller 25 can Xiang Jinshui Control valve 8 sends aperture and tunes up signal, increases the inlet of cooling water, to reduce the temperature of cooling water in cold slag ladle 1, in turn Reduce the temperature of lime-ash；

(4) slag input of deslagging tank and deslagging: receipts slag ladle 2 is moved downwardly by lime-ash after cooling three times and is carried out temporarily It deposits, after the lime-ash inside deslagging tank 3 drains, closes the second residual cake valve 19, open water injection valve 18 and start to fill the water, when deslagging liquid level When the detected value of sensor 17 reaches the preset value of controller 25, controller 25 sends shutdown signal, water injection valve to water injection valve 18 18 close, when the detected value of deslagging pressure tank sensor 16 is greater than the detected value of cold slag ladle pressure sensor 12, controller 25 Open signal can be sent to relief valve 15, pressure release is carried out to deslagging tank 3, when the detected value of deslagging pressure tank sensor 16 is equal to cold Slag ladle pressure sensor 12 closes relief valve 15；

After adjusting liquid level and pressure inside deslagging tank 3 according to above-mentioned steps, the first residual cake valve 14, deslagging tank 3 are opened The high pressure gas at top be moved upwardly into receive slag ladle 2, receive 2 lower part of slag ladle lime-ash it is disturbed and under move up into deslagging tank 3；Row After slag ladle 3 is fed, the first residual cake valve 14 is closed, opens relief valve 15, the detected value of deslagging pressure tank sensor 16 is equal to It after zero, opens the second residual cake valve 19 and Sludge washing-out valve 23, lime-ash is smoothly taken away by high pressure injection water, flow to storage slag along deslagging general pipeline 20 Device, in the slag input and tapping process of deslagging tank 3, water balance valve 13 is always open state, the water and row that deslagging tank 3 injects The conveying water of slag general pipeline 20 is to receive slag ladle 2 to pass through the water that water balance valve 13 is discharged, and carries out sufficiently benefit to the water that slag ladle 2 is discharged is received With reducing the usage amount of pure water resource.

Lime-ash in deslagging general pipeline 20 is conveyed by high pressure water, allows lime-ash along 20 row of being transported to of deslagging general pipeline In the storage slag device of 20 end slag general pipeline, it is not necessary to which the position of limitation storage slag device improves the flexibility of equipment riding position, arranges High pressure gas in slag ladle 3 carries out outlet by deslagging general pipeline 20, provides certain pressure to the conveying of lime-ash, guarantees lime-ash Smooth delivery of power.

The conveying water of water and deslagging general pipeline 20 that deslagging tank 3 injects passes through the water that water balance valve 13 is discharged by slag ladle 2 is received It provides, the pipeline that time opening receives slag ladle flushing valve 24 and control valve 22 flows through pulp water using the cooling water that cooling water pipe is discharged It is rinsed, the pipeline blocking for preventing pulp water from flowing through, flushing cycle is determined according to the real work situation that system is run.

When the Coolant-Level inside low liquid level sensor 30 detects cold slag ladle 1 reaches preset bottom level limit, The aperture for tuning up water inlet control valve 8 turns the aperture of water balance valve 13 down, carries out moisturizing to tank body 26；When high liquid level sensor 28 When detecting that Coolant-Level reaches preset liquid level upper limit value, the aperture of water inlet control valve 8 is turned down, tune up water balance valve 13 Aperture remains at the Coolant-Level inside tank body 26 between minimum liquid level and highest liquid level, cinder is enable to submerge In cooling water, guarantee good cooling effect.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (11)

1. a kind of cooling dreg removing system of coal ash, which is characterized in that it includes cold slag ladle, receives slag ladle and deslagging tank, lime-ash pipe Outlet extends to the interior bottom of the cold slag ladle, and ash temperature sensor is installed with inside the top of the lime-ash pipe, cooling Water pipe is connected to the water inlet pipe of the cold slag ladle, is installed with water inlet control valve on the water inlet pipe, inside the cold slag ladle The top of the lime-ash pipe be communicated with gas tube, cooling tracheae is connected to the gas tube, is installed on the gas tube Ventilating control valve is installed with cold slag ladle pressure sensor and cold slag ladle temperature sensor at the top of the cold slag ladle；

The slag-drip opening of the cold slag ladle bottom is connected to the slag inlet at the top of the receipts slag ladle, is installed at the top for receiving slag ladle There is water balance valve；The slag-drip opening for receiving slag ladle bottom is connected to by the first residual cake valve with the slag inlet of the deslagging tank top, It is installed with relief valve and deslagging pressure tank sensor at the top of the deslagging tank, is installed with deslagging in the side of the deslagging tank Liquid level sensor is installed with the second residual cake valve in the bottom of the deslagging tank, and second residual cake valve is connected to deslagging general pipeline, In Water injection valve is installed on the deslagging tank above second residual cake valve.

2. the cooling dreg removing system of a kind of coal ash according to claim 1, which is characterized in that in the cooling water pipe and institute It states and is connected with communicating pipe between water injection valve, be installed with control valve on the communicating pipe.

3. the cooling dreg removing system of a kind of coal ash according to claim 2, which is characterized in that the outlet end of the control valve Be connected to the deslagging general pipeline by Sludge washing-out valve the communicating pipe, the outlet end of the relief valve and the deslagging general pipeline into Mouth connection.

4. the cooling dreg removing system of a kind of coal ash according to claim 3, which is characterized in that the outlet of the water balance valve End is connected to the communicating pipe with the outlet end of the control valve, and the communicating pipe of the input end of the control valve is by receiving slag Tank flushing valve is connected to the input end of the water balance valve.

5. the cooling dreg removing system of a kind of coal ash according to claim 4, which is characterized in that the ash temperature sensing Device, the cold slag ladle temperature sensor, the cold slag ladle pressure sensor, the deslagging pressure tank sensor, the dreg discharging liquid Level sensor is electrically connected with the input terminal of controller, the output end of the controller respectively with the water inlet control valve, described Ventilating control valve, relief valve electrical connection.

6. the cooling dreg removing system of a kind of coal ash according to any one of claims 1 to 5, which is characterized in that the cold slag ladle Including tank body, it is equipped with the lime-ash pipe vertically at the middle part of the tank body, the top of the lime-ash pipe extends to the tank body Tip exterior forms channel between the bottom end of the lime-ash pipe and the bottom end of the tank body；Described in below the gas tube The inside of tank body is equipped with high liquid level sensor；On the lime-ash pipe below the high liquid level sensor, along the circumferential direction on Several balance holes are offered, the tank interior below the balance hole is equipped with low liquid level sensor, and the high liquid level passes Sensor and the low liquid level sensor are electrically connected with the water inlet control valve and the water balance valve；In the side of the tank body It is communicated with the water inlet pipe, the annular water distributor being connected to the water inlet pipe is equipped in the outer cover of the lime-ash pipe, described Several water distributing pores are offered on the tube wall of annular water distributor.

7. the cooling dreg removing system of a kind of coal ash according to claim 6, which is characterized in that the lime-ash pipe includes by upper Straight tube heat exchanging segment, expansion tube vaporization section and the straight tube deslagging section being sequentially communicated downwards, the gas tube setting are changed in the straight tube Hot arc, the balance hole are provided with the top of the expansion tube vaporization section.

8. the cooling dreg removing system of a kind of coal ash according to claim 6, which is characterized in that in the high liquid level sensor Insertion is equipped with gas distribution pipe on the lime-ash pipe of top, and the gas tube is connected to by the gas distribution pipe with the lime-ash pipe； The gas distribution pipe includes the sintering metal filter core and the seperated tube body being set in outside the sintering metal filter core of annular, the pipe Body insertion is mounted on the lime-ash pipe, and the top of the tube body and bottom end pass through flange respectively and connect with the lime-ash pipe, The gas tube is connected to the tubular body.

9. the cooling dreg removing system of a kind of coal ash according to claim 6, which is characterized in that the institute outside the tank body It states and is provided with flame retardant coating on the inner wall of lime-ash pipe.

10. the cooling dreg removing system of a kind of coal ash according to claim 6, which is characterized in that under the lime-ash pipe It is fixed with grate plate between portion's outer wall and the inner wall of the tank body, is equipped with manhole in the tank wall.

11. the cooling dreg removing system of a kind of coal ash according to claim 6, which is characterized in that the gas tube is dioxy Change carbon gas tube.