CN204767971U - A filter that is used for coal gasification equipment high temperature including under sulphur environment - Google Patents
A filter that is used for coal gasification equipment high temperature including under sulphur environment Download PDFInfo
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- CN204767971U CN204767971U CN201520390310.9U CN201520390310U CN204767971U CN 204767971 U CN204767971 U CN 204767971U CN 201520390310 U CN201520390310 U CN 201520390310U CN 204767971 U CN204767971 U CN 204767971U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The utility model discloses a filter that is used for coal gasification equipment high temperature including under sulphur environment, it includes the casing, the casing is formed with the cavity space, is provided with air inlet and gas outlet on the lateral wall of casing and top cap respectively, the tube sheet is located the top of air inlet, and the circumference edge of tube sheet is connected with the lateral wall of casing is inboard, division has a plurality of first through -holes on the tube sheet, multiunit filtering component, one -to -one install in a plurality of first through -hole departments, and a plurality of filtration filter cores that filtering component contains are located the dust -laden space and all are formed with the cavity, the top end opening and clean space intercommunication of cavity through filtering the filter core, with the blowback regenerating unit who has the mouth of blowing for carry blowback gas to the clean space in by the casing is outer, the mouth of blowing sets up in first through -hole top and just to first through -hole, filter the filter core and filter the filter core for the fe3Al alloy. The utility model discloses an above -mentioned technical scheme has improved the life who filters the filter core, has guaranteed the continuous steady operation of whole coal gasification equipment long period.
Description
Technical field
The utility model belongs to Coal Gasification Technology field, particularly a kind of for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment.
Background technology
In coal gasification apparatus synthesis gas production process, in gasification furnace, crude synthesis gas out carries a large amount of ash contents, i.e. dust-laden crude synthesis gas, in order to remove the ash content in crude synthesis gas, obtaining clean gas, need install a filter after gasification furnace additional.
In prior art, the filter core of filter generally adopts ceramic material, therefore this kind of filter is called ceramic filter.Due to filter application working condition harshness (or filter application working condition is high temperature sulfur-bearing operating mode), as: 1, content of ashes is high, and entrance ash content mass concentration is greater than 20g/Nm
3, outgoing quality concentration requirement is less than 20mg/Nm
3, filtration pressure difference is no more than 30kPa; 2, operating temperature is high, can reach 300 ~ 400 DEG C; Operating pressure is high, can reach 3 ~ 4MPa; 3, the component of crude synthesis gas comprises CO, H
2, N
2, CO
2, H
2o, CH
4, H
2the multiple gases such as S, wherein H
2s, CO
2in high temperature wet environment, extremely strong corrosivity is had Deng gas, in addition ceramic material has the shortcomings such as shaking property of heat resistanceheat resistant difference, material are crisp, poor toughness, ceramic filter is caused in use easily fracture failure to occur, have impact on the continuous operation of whole coal gasification apparatus largely, reduce production efficiency.
Summary of the invention
In order to solve the problem, the utility model provides that a kind of it comprises: housing for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment, and described housing is formed with hollow space, the sidewall of described housing is provided with air inlet, the top cover of described housing is provided with gas outlet; Tube sheet, is positioned at the top of described air inlet, and the circumferential edge of described tube sheet is connected with the inside sidewalls of described housing to be divided into clean space and dust-laden space by the direction of described hollow space from top to bottom, described tube sheet has multiple first through hole; Organize filter assemblies more, one_to_one corresponding is installed on multiple described first through hole, multiple filter cores that described filter assemblies contains are positioned at described dust-laden space and are all formed with cavity, and described cavity is communicated with described clean space by the top end opening of described filter core; And there is the pulse cleaning device of inflatable mouth, for by purge gas by being delivered in described clean space outside described housing, described inflatable mouth to be arranged at above described first through hole and just to described first through hole; Wherein, described filter core is Fe
3al alloy filter core.
In filter as above, preferably, described filter assemblies also comprises: collection board, pull bar, card, pressing plate, seal, spring, screw rod and guide pipe; Described collection board installs described first through hole, and described collection board has multiple second through hole; Often the filter core organized in filter assemblies is arranged in vertical mode, and filter core top one_to_one corresponding is arranged on described second through hole, and filter core bottom is arranged on a described card; The bottom of described guide pipe is docked with described filter core top by seal, and the outside cover of described guide pipe has described spring, and the top of described guide pipe is through the third through-hole that described pressing plate has; Described pull bar is arranged in vertical mode, and one end of described pull bar is arranged on described collection board, and the other end of described pull bar is arranged on described card; Described screw rod is from top to bottom successively through described pressing plate and described collection board.
In filter as above, preferably, often the multiple filter cores organized in filter assemblies assume diamond in shape distribution.
In filter as above, preferably, described filter also comprises: the air inlet riser with the first arm and the second arm; Described first arm, in being horizontally disposed with, is communicated with the air inlet of described housing; Described second arm is in vertically arranging, and a mouth of pipe of described second arm is communicated with described first arm, and another mouth of pipe of described second arm extends upwardly to below described tube sheet to leave interval between described tube sheet.
In filter as above, preferably, multiple described filter core is looped around around described second arm.
In filter as above, preferably, described pulse cleaning device comprises: gas buffer tank, is arranged at outside described housing, for providing purge gas; Gas transmission line, one end of described gas transmission line is communicated with described gas buffer tank, and the other end of described gas transmission line to extend in described clean space and is formed with multiple described inflatable mouth; Valve, is positioned at described housing outer and be arranged on described gas transmission line; And control device, be connected with described valve, for controlling closedown and the unlatching of described valve.
In filter as above, preferably, described pulse cleaning device also comprises the multiple venturi nozzles be arranged in described clean space; Input port and multiple described inflatable mouth of multiple described venturi nozzle are just right one by one, and the spout cover of described venturi nozzle contacts with described tube sheet and covers described first through hole.
In filter as above, preferably, described control device comprises: differential pressure transmitter, is arranged on the sidewall in described clean space and dust-laden space; And controller, be connected with described differential pressure transmitter and described valve, for controlling the opening and closing of described valve.
In filter as above, preferably, described filter also comprises: the first temperature transmitter, is arranged on described gas buffer tank; Second temperature transmitter, be arranged at form described dust-laden space housing on; First pressure transmitter, is arranged on described gas buffer tank; Second pressure transmitter, be arranged at form described dust-laden space housing on; And alarm; Wherein, described controller is connected with described first temperature transmitter, described second temperature transmitter, described first pressure transmitter, described second pressure transmitter and described alarm respectively, for controlling unlatching or the closedown of described alarm.
In filter as above, preferably, described valve is pulse backblowing valve.
The beneficial effect that the technical scheme that the utility model provides is brought is:
(1), the filter that provides of the utility model adopts metal filtration filter core, and the high-temperature gas-solid for coal gasification apparatus synthesis gas is separated, and its material is the Fe of high temperature sulfur corrosion resistant
3al alloy, this metal filtration filter core has excellent heat resistanceheat resistant and to shake performance, good comprehensive mechanical property, intensity is high, corrosion-resistant, high pressure resistant, can bear alternate load, the shock-resistant density of load is high, fatigue strength is high, long service life, so can ensure the continuous operation of filter.
(2), the filter that provides of the utility model can realize automatically performing online continuous filtration and filter core regeneration by Automated condtrol and Data Detection, ensures whole coal gasification apparatus long period continuous and steady operation.
(3), the metre filter precision that provides of the utility model is high, and after isolated by filtration, in crude synthesis gas, dust granules concentration is less than 20mg/Nm
3.
Accompanying drawing explanation
A kind of structural representation for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment that Fig. 1 provides for the utility model embodiment;
The structural representation of a kind of filter core that Fig. 2 provides for the utility model embodiment;
A kind of distributed architecture schematic diagram often organizing multiple filter core in filter assemblies that Fig. 3 provides for the utility model embodiment;
The structural representation of a kind of collection board that Fig. 4 provides for the utility model embodiment and tube sheet;
The structural representation of a kind of collection board, pull bar, card, pressing plate, seal, spring, screw rod and guide pipe that Fig. 5 provides for the utility model embodiment;
Wherein, in figure, symbol description is as follows:
1 housing, 11 first end sockets, 111 gas outlets, 12 second end sockets, 13 cylindrical shells, 131 air inlets, 14 clean space, 15 dust-laden spaces, 2 tube sheets, 3 filter assemblies, 31 filter cores, 311 cavitys, 312 filter core tops, 313 filter core bottoms, in the middle part of 314 filter cores, 32 collection boards, 33 pull bars, 34 cards, 35 pressing plates, 36 seals, 37 springs, 38 screw rods, 39 guide pipes, 41 gas buffer tanks, 42 gas transmission lines, 421 inflatable mouths, 43 valves, 44 venturi nozzles, the input port of 441 venturi nozzles, 442 spout covers, 45 differential pressure transmitters, 46 controllers, 47 first temperature transmitters, 48 second temperature transmitters, 49 first pressure transmitters, 50 second pressure transmitters, 40 alarms, 6 air inlet risers, 61 first arms, 62 second arms.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
See Fig. 1-5, the utility model embodiment provides a kind of for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment, and it comprises: housing 1, tube sheet 2, multiple filter assemblies 3 and pulse cleaning device.Coal gasification apparatus can be Shell coal gasification apparatus, IGCC (IntegratedGasificationCombinedCycle, integrated gasification combined cycle for power generation system) device or E-Gas coal gasification apparatus.
Specifically, housing 1 is containing the first end socket 11, second end socket 12 and cylindrical shell 13.First end socket 11 is connected with the top of cylindrical shell 13 and the second end socket 12 is connected to form hollow space with the bottom of cylindrical shell 13.Cylindrical shell 13 (i.e. the sidewall of housing) has air inlet 131, first end socket 11 (i.e. the top cover of housing) has gas outlet 111, the dust-laden crude synthesis gas that gasification furnace produces is entered the hollow space of filter by air inlet 131, discharged in filter after process by gas outlet 111.Cylindrical shell 13 is preferably cylindrical, and the second end socket 12 is preferably tapered.
Tube sheet 2 is arranged on the inside sidewalls of housing with level side, and be positioned at the top of air inlet 131, so be divided into clean space 14 (or being called clean section, clean section) and dust-laden space 15 (or being called dust-laden section) by the direction of hollow space from top to bottom, be introduced into dust-laden space 15 to make the dust-laden crude synthesis gas entered by air inlet.Tube sheet 2 has multiple first through hole, clean space 14 is communicated with dust-laden space 15 by the first through hole.
Many groups filter assemblies 3 one_to_one corresponding is installed on multiple first through hole, often organizes filter assemblies and contains multiple filter core 31 (or being called filter element).Filter core 31 is for filtering to produce clean crude synthesis gas (crude synthesis gas namely after filtering dust particle) to dust-laden crude synthesis gas (crude synthesis gas namely containing dust granules).Filter core 31 is positioned at dust-laden space 15, cavity 311 is formed in filter core, cavity 311 is communicated with clean space 14 by the top end opening of filter core, and cavity 311 is communicated with dust-laden space 15 by the micropore of filter core, and that is filter core is barrel-shaped.During application, dust-laden crude synthesis gas is when filter core 31, its dust granules is intercepted at the outer surface of filter core 31, some formation filter cakes, what have falls to housing bottom (i.e. the second end socket place) under gravity condition, and the clean crude synthesis gas after filtration enters cavity 31, then enters clean space 14, realize being separated of gas and solid, finally discharged by gas outlet 111.Multiple filter core 31 is preferably installed vertically on the first through hole of tube sheet 2 in the mode be parallel to each other, and leave spacing each other, namely do not contact between any two filter cores 31, spacing can be 50 ~ 200mm, be preferably 80 ~ 120mm because too small spacing can cause and form filter cake between filter core 31 and build bridge, be difficult to by counter clean and wash away clean out, the surface portion of filter core 31 lost efficacy, and the raising of load is filtered in impact.The group number of filter assemblies 3 can be 12,15,18 or 24, can also be other values; Often group filter assemblies 3 can be 12,24 or 48 containing the number of filter core 31, can also be other values.Often the filter core 31 organized in filter assemblies 3 assumes diamond in shape arrangement.In figure 3, filter assemblies contains 9 filter cores, the circular cross-section of filter core, and the line between the center of circle assumes diamond in shape.
Filter core 31 is preferably in drum-shaped, and its diameter is 40 ~ 90mm, is preferably 50 ~ 80mm; Filtration fraction length is 1.0 ~ 2.5m, be preferably 1.5 ~ 2.0m, be of a size of Ф (50 ~ 80) × (1000 ~ 2500) mm, that is filter core to comprise in the middle part of filter core top 312, filter core bottom 313 and filter core 314, and the middle part length of filter core is filtration fraction length; The aperture of filter core 31 is 1 ~ 50 μm, is preferably 3 ~ 10 μm, and the precision of filter core is 0.2 ~ 5 μm.In reality, the quantity of filter core 31, according to the air inflow of filter and air inlet dustiness, to choose corresponding filter element quantity by the face speed of filter core 0.5 ~ 3 m/min, is preferably 0.5 ~ 3 m/min.During application, dustiness is higher, requires that the face speed of filter core is lower; Dustiness is lower, requires that the face speed of filter core is higher.
Filter core 31 is Fe
3al alloy filter core, the i.e. material of filter core 31 Fe that is
3al alloy, so can improve the service life of filter core 31 under high temperature sulfur-bearing operating mode.In reality, filter core 31 adopts Fe
3al alloy powder is that raw material is made by powder metallurgical technique, specifically can with reference to Chinese patent, application number is made for the preparation method of a kind of iron-aluminum based metal compound microporous filter element disclosed in the patent document of 20061005753.8, in other examples, other preparation methods can also be adopted to make, and the present embodiment does not limit this.Filter core 31 corrosion-and high-temp-resistant made, has excellent heat resistanceheat resistant and to shake performance, good comprehensive mechanical property.Raw material due to filter core 31 is Fe
3al, therefore this kind of filter core 31 is called metal filtration filter core, adopts the filter of metal filtration filter core to be called metallic filter.
Filter core 31 after a period of operation, ash content can be piled up in its appearance, form filter cake, thus affect filter efficiency, therefore pulse cleaning device is set, its be delivered to clean space 14 for the purge gas provided by the source of the gas be positioned at outside housing 1 and the cavity 311 purge gas being blowed to filter core 31 with clean filter core 31, the inflatable mouth of pulse cleaning device to be arranged at above the first through hole and just to the first through hole, so make filter core 31 can complete when not disassembling from tube sheet 2 clean, improve cleaning efficiency, achieve the on-line regeneration of filter core 31.
In order to easy for installation and raising filter efficiency, filter assemblies 3 also comprises: collection board 32, pull bar 33, card 34, pressing plate 35, seal 36, spring 37, screw rod 38 and guide pipe 39.The axial edge of collection board 32 contacts with the hole wall of the first through hole, and collection board 32 has multiple second through hole, and the bottom diameter of the second through hole is less than the top end diameter of the second through hole with the bottom end making the top of filter core be stuck in the second through hole.Often the filter core 31 organized in filter assemblies 3 is arranged in vertical mode, and filter core top one_to_one corresponding is arranged on the second through hole, and filter core bottom is arranged on a card 34.The bottom of guide pipe 39 is docked with filter core top by seal 36, so makes the pipeline communication of cavity and guide pipe, and the outside cover of guide pipe 39 has spring 37, and the top of guide pipe 39 is through the third through-hole that pressing plate 39 has.Pull bar 33 is arranged in vertical mode, and one end of pull bar 33 is arranged on collection board 32, and the other end of pull bar 33 is arranged on card 34, and pull bar can be arranged on the middle part of collection board 32, also can be arranged on the edge of collection board.Screw rod 38 from top to bottom successively through pressing plate 35 and collection board 32, and is fixed by nut.Filter core 31 by screw rod 38 clam member 35 and collection board 32, and then realizes the compression of spring 37, thus makes the compression of guide pipe 39 and filter core 31, realizes filter core 31 and is securely fixed on collection board 32.
In order to improve filter efficiency, filter also comprises: air inlet riser 6, it is for being drained to eminence position by the dust-laden entered by air inlet 131 crude synthesis gas, this eminence position is positioned at the oblique upper of air inlet 131 and is positioned at dust-laden space 15, the distance on itself and ground is greater than the distance with ground bottom filter core 31, thus achieves dust-laden gaseous mixture and enter filter core from top to down by air inlet riser.Preferably, between itself and tube sheet 2, be spaced apart 50 ~ 500mm, be preferably 100 ~ 400mm.Particularly, air inlet riser 6 comprises: the first arm 61 and the second arm 62.First arm 61 is arranged in a horizontal manner, and the one mouth of pipe is communicated with the air inlet 131 of housing 1.Second arm 62 is arranged in vertical mode, and the one mouth of pipe is communicated with another mouth of pipe of the first arm 61, and another mouth of pipe of the second arm 62 extends upwardly to below tube sheet 2 to leave interval between tube sheet 2.First arm 61 has multiple connected entrance, and a mouth of pipe of multiple second arm 62 is communicated with multiple connected entrance one_to_one corresponding of the first arm 61 respectively.Preferred multiple filter core 31 is looped around the second arm 62 around, and arbitrary filter core 31 and the distance on ground are greater than the distance on the first arm 61 and ground.Owing to being provided with air inlet riser 6, the dust-laden crude synthesis gas making to enter in dust-laden space 15 is even, and the secondary avoiding ash content in dust-laden crude synthesis gas raises up.Multiple filter core 31 is looped around the second arm 62 around.
Pulse cleaning device comprises: gas buffer tank 41, gas transmission line 42, valve 43 and control device.Gas buffer tank 41 is arranged at outside housing 1, for providing source of the gas.Source of the gas can be Nitrogen source gases or carbon dioxide air source.In reality, gas buffer tank 41 is arranged at above housing 1, stores gases at high pressure in it, such as high pressure nitrogen, high-pressure carbon dioxide, and for clean filter core provides stable source of the gas, its quantity can be multiple.One end of gas transmission line 42 is communicated with gas buffer tank 41, and the other end to extend in clean space 14 through the first end socket and is formed with multiple inflatable mouth 421.In order to control the clean opportunity of filter core 31, gas transmission line 42 is provided with valve 43, and it is positioned at outside housing 1.Control device is connected with valve 43, for closedown and the unlatching of by-pass valve control 43, so improves control efficiency.Valve 43 is preferably pulse backblowing valve, the duration opened by pulse backblowing valve can be 0.05 ~ 0.5s, and closing the duration can be 0.05 ~ 0.5s, also can be unlatching duration and closedown duration to be all less than 0.1s, in other examples, can also be other values.Actual employing HTHP pulse backblowing valve.The quantity of gas buffer tank can be multiple, and the quantity of gas transmission line is also multiple, and both one_to_one corresponding are communicated with, and the other end of each gas transmission line forms an inflatable mouth.
Control device comprises: differential pressure transmitter 45 and controller 46.Differential pressure transmitter 45 is arranged on the sidewall in clean space 14 and dust-laden space 15, for detecting the pressure reduction in clean space 14 and dust-laden space 15.Controller 46 is connected with differential pressure transmitter 45, and the pressure difference data for detecting according to differential pressure transmitter 45 carrys out the opening and closing of by-pass valve control 43.During application, the differential pressure value preset can be 5 ~ 60kPa, such as: 10kPa, 30kPa, when the pressure difference data that differential pressure transmitter 45 detects reaches or surpasses the differential pressure value preset, controller 46 by-pass valve control 43 is opened, otherwise valve 43 is in closed condition.The filtration time data of controller 46 also for detecting according to differential pressure transmitter 45 carry out the opening and closing of by-pass valve control 43.When the differential pressure that differential pressure transmitter 45 detects is less than the differential pressure value that presets and filtration time reaches or surpasses the filtration time value preset, controller 46 by-pass valve control 43 is opened, otherwise valve 43 is in closed condition.Preferably be provided with filter core pressure reduction control unit and filtration time control unit in controller, be respectively used to unlatching or the closedown of by-pass valve control.Controller adopts redundancy structure to ensure that system whenever reliability, and all vitals all take redundant configuration.The synchronization module etc. that this includes the CPU of redundancy, power-supplying modules communicates with for redundancy CPU.By CP address card, realize, with the communication of DCS (DistributedControlSystem, dcs), meeting Long-distance Control requirement.Controller is preferably hard redundancy series of PLC (ProgrammableLogicController, programmable logic controller (PLC)), and it can provide reliability and the fault-tolerant ability of higher degree for filter.Redundancy CPU works simultaneously, can realize system zero time switching undisturbed; Without any information dropout in handoff procedure; System online modification program; Download program group needs to download single cpu, can automatically copy another CPU to; The advantages such as output are kept during switching.
In order to improve cleaning efficiency further, pulse cleaning device also comprises venturi nozzle 44, and it is for generation of high velocity air, is arranged in clean space 14.The input port 441 (or being called suitable for reading) of venturi nozzle 44 is connected with the other end of gas transmission line 42, and the spout cover 442 of venturi nozzle 44 contacts with tube sheet 2 and covers the first through hole.Venturi nozzle is by group and often organize filter assemblies one_to_one corresponding.
Pulse cleaning device also comprises: the first temperature transmitter 47, second temperature transmitter 48, first pressure transmitter 49, second pressure transmitter 50 and alarm 40.First temperature transmitter 47 is arranged on gas buffer tank 41, for the temperature of measurement gas surge tank 41 inner high voltage gas.Second temperature transmitter 48 is arranged on the housing in formation dust-laden space 15, for measuring temperature in dust-laden space 15.First pressure transmitter 49 is arranged on gas buffer tank 41, for the pressure of measurement gas surge tank 41 inner high voltage gas.Second pressure transmitter 50 is arranged on the housing in formation dust-laden space 15, for measuring the pressure of dust-laden crude synthesis gas in dust-laden space 15.Alarm 40 is for reporting to the police.Controller 46 is connected with the first temperature transmitter 47, second temperature transmitter 48, first pressure transmitter 49 and the second pressure transmitter 50, and the pressure data that temperature data, the temperature data of the second temperature transmitter 48 measurement, the pressure data of the first pressure transmitter 49 measurement and the second pressure transmitter 50 for measuring according to the first temperature transmitter 47 are measured controls alarm 40 and whether reports to the police.During application, can: when the business of the pressure data that the first pressure transmitter 49 is measured and the pressure data that the second pressure transmitter 50 is measured is less than 1.6, that is, when the pressure data that the first pressure transmitter 49 is measured is less than 1.6 times of the pressure data of the second pressure transmitter measurement, controller 46 controls alarm 40 and reports to the police.Preferably, when both business are 1.6 ~ 2.5, alarm 40 is not reported to the police.When the temperature that the first temperature transmitter 47 and the second temperature transmitter 48 detect is less than or greater than desired temperature, controller 46 controls alarm 40 and reports to the police, and by-pass valve control 43 makes it be in closed condition, even if when the pressure difference data that differential pressure transmitter 45 detects reaches or surpasses the differential pressure value preset.The too low alarm of temperature can avoid the appearance having condensate under the condition that temperature is too low, affects the strainability of filter core 31, and desired temperature can be 180 ~ 260 DEG C according to different operating modes.
The working condition external due to filter head housings is also harsher, such as, there is flammable explosive gas.Safe wiring space is provided in order to give controller and controller and related valve and measuring instrument (temperature transmitter, pressure transmitter and differential pressure transmitter), adopt positive-pressure explosion-proof switch board to provide wiring space, the superpressure formed in its cabinet makes extraneous flammable explosive gas to enter in cabinet, thus meets outdoor explosion-proof requirement of shelter.
Below the use procedure for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment that the present embodiment provides is described in detail:
In the running for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment, from gasification furnace dust-laden crude synthesis gas out from air inlet 131 through air inlet riser 6, from top to bottom enter in filter core, in normal filtration state, all pulse backblowing valves are all in closed condition.Now, when dust-laden crude synthesis gas is by filter core 31, the outer surface that solid ash content (i.e. dust granule) is intercepted at filter core 31 forms cake layer, unnecessary ash impurities falls to the housing bottom of filter under gravity condition, gas clean after filtering after filtration filter core enters clean section above tube sheet 2 to realize being separated of gas and solid, and is gone out to downstream unit by gas outlet 111.
In filtration condition, second temperature transmitter 48, second pressure transmitter, the first temperature transmitter 47, first pressure transmitter 49, differential pressure transmitter 45 detect every data all constantly, when the temperature that the temperature transmitter in housing or gas buffer tank or pressure transmitter detect or pressure anomaly (temperature and pressure are greater than or less than setting value), controller 46 controls alarm 40 and sends instruction of reporting to the police after receiving data.
When the differential pressure at the upper and lower two ends of tube sheet that differential pressure transmitter 45 detects is greater than filter pressure difference setting value (namely the differential pressure of dust-laden space and clean space is greater than the differential pressure value preset), show that the solid filter cake of filter core surface accumulation needs to remove, pulse cleaning device need be enabled.Regeneration step is started by controller 46 at the present embodiment, filter pressure difference setting value (namely the differential pressure of dust-laden space and clean space is greater than the differential pressure value preset) can be greater than in the pressure differential of filter core rear and front end, start regeneration step, open by the wherein set of pulses back-flushing valve in pulse cleaning device, the pulse backblowing valve of gases at high pressure in gas buffer tank 41 by opening, high-speed pulse air-flow is formed after gas transmission line and venturi nozzle 44, enter filter core 31 from inside to outside, and remove the filter cake on its outer surface.After pulse backblowing valve opening time reaches the pulse backblowing valve setting opening time, close pulse backblowing valve, and the control procedure repeating above-mentioned set of pulses back-flushing valve according to this all completes the pressure differential of regeneration step or rear and front end lower than presetting differential pressure value, that is by the unlatching of the every group pulse back-flushing valve of group loop control until often organize filter assemblies.Therefore this control procedure can be called filter core pressure reduction control procedure.Also regeneration step can be started by detecting filtration time, namely the pressure differential of filter core rear and front end does not reach the pressure difference preset, and filtration time is when being greater than the filtration time value preset, controller is also by the open and close by group control impuls back-flushing valve, until each group filter assemblies completes regeneration step, that is by the unlatching of the every group pulse back-flushing valve of group loop control.Therefore this control procedure can be called filtration time control procedure.That is, be provided with filter core pressure reduction control unit and filtration time control unit in controller, for controlling the operation of regeneration step.
In sum, the beneficial effect of the utility model embodiment is as follows:
(1), the filter that provides of the utility model adopts metal filtration filter core, and the high-temperature gas-solid for coal gasification apparatus synthesis gas is separated, and its material is the Fe of high temperature sulfur corrosion resistant
3al alloy, this metal filtration filter core has excellent heat resistanceheat resistant and to shake performance, good comprehensive mechanical property, intensity is high, corrosion-resistant, high pressure resistant, can bear alternate load, the shock-resistant density of load is high, fatigue strength is high, long service life, so can ensure the continuous operation of filter.
(2), the filter that provides of the utility model can realize automatically performing online continuous filtration and filter core regeneration by Automated condtrol and Data Detection, ensures whole coal gasification apparatus long period continuous and steady operation.
(3), the metre filter precision that provides of the utility model is high, and after isolated by filtration, in crude synthesis gas, dust granules concentration is less than 20mg/Nm
3.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (10)
1. for the filter under coal gasification apparatus high temperature Sulphur Contaminated Environment, it is characterized in that: described filter comprises:
Housing, described housing is formed with hollow space, and the sidewall of described housing is provided with air inlet, and the top cover of described housing is provided with gas outlet;
Tube sheet, is positioned at the top of described air inlet, and the circumferential edge of described tube sheet is connected with the inside sidewalls of described housing to be divided into clean space and dust-laden space by the direction of described hollow space from top to bottom, described tube sheet has multiple first through hole;
Organize filter assemblies more, one_to_one corresponding is installed on multiple described first through hole, multiple filter cores that described filter assemblies contains are positioned at described dust-laden space, are formed with cavity in described filter core, and described cavity is communicated with described clean space by the top end opening of described filter core; And
There is the pulse cleaning device of inflatable mouth, for by purge gas by being delivered in described clean space outside described housing, described inflatable mouth to be arranged at above described first through hole and just to described first through hole;
Wherein, described filter core is Fe
3al alloy filter core.
2. filter according to claim 1, is characterized in that, described filter assemblies also comprises: collection board, pull bar, card, pressing plate, seal, spring, screw rod and guide pipe;
Described collection board installs described first through hole, and described collection board has multiple second through hole;
Often the filter core organized in filter assemblies is arranged in vertical mode, and filter core top one_to_one corresponding is arranged on described second through hole, and filter core bottom is arranged on a described card;
The bottom of described guide pipe is docked with described filter core top by seal, and the outside cover of described guide pipe has described spring, and the top of described guide pipe is through the third through-hole that described pressing plate has;
Described pull bar is arranged in vertical mode, and one end of described pull bar is arranged on described collection board, and the other end of described pull bar is arranged on described card;
Described screw rod is from top to bottom successively through described pressing plate and described collection board.
3. filter according to claim 1 and 2, is characterized in that, often the multiple filter cores organized in filter assemblies assume diamond in shape distribution.
4. filter according to claim 1, is characterized in that, described filter also comprises: the air inlet riser with the first arm and the second arm;
Described first arm, in being horizontally disposed with, is communicated with the air inlet of described housing;
Described second arm is in vertically arranging, and a mouth of pipe of described second arm is communicated with described first arm, and another mouth of pipe of described second arm extends upwardly to below described tube sheet to leave interval between described tube sheet.
5. filter according to claim 4, is characterized in that, multiple described filter core is looped around around described second arm.
6. filter according to claim 1, is characterized in that, described pulse cleaning device comprises:
Gas buffer tank, is arranged at outside described housing, for providing purge gas;
Gas transmission line, one end of described gas transmission line is communicated with described gas buffer tank, and the other end of described gas transmission line to extend in described clean space and is formed with multiple described inflatable mouth;
Valve, is positioned at described housing outer and be arranged on described gas transmission line; And
Control device, is connected with described valve, for controlling closedown and the unlatching of described valve.
7. filter according to claim 6, is characterized in that, described pulse cleaning device also comprises the multiple venturi nozzles be arranged in described clean space;
Input port and multiple described inflatable mouth of multiple described venturi nozzle are just right one by one, and the spout cover of described venturi nozzle contacts with described tube sheet and covers described first through hole.
8. the filter according to claim 6 or 7, is characterized in that, described control device comprises:
Differential pressure transmitter, is arranged on the sidewall in described clean space and dust-laden space; And
Controller, is connected with described differential pressure transmitter and described valve, for controlling the opening and closing of described valve.
9. filter according to claim 8, is characterized in that, described filter also comprises:
First temperature transmitter, is arranged on described gas buffer tank;
Second temperature transmitter, be arranged at form described dust-laden space housing on;
First pressure transmitter, is arranged on described gas buffer tank;
Second pressure transmitter, be arranged at form described dust-laden space housing on; And
Alarm;
Wherein, described controller is connected with described first temperature transmitter, described second temperature transmitter, described first pressure transmitter, described second pressure transmitter and described alarm respectively, for controlling unlatching or the closedown of described alarm.
10. filter according to claim 6, is characterized in that, described valve is pulse backblowing valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520390310.9U CN204767971U (en) | 2015-06-08 | 2015-06-08 | A filter that is used for coal gasification equipment high temperature including under sulphur environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520390310.9U CN204767971U (en) | 2015-06-08 | 2015-06-08 | A filter that is used for coal gasification equipment high temperature including under sulphur environment |
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| CN204767971U true CN204767971U (en) | 2015-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495046A (en) * | 2020-04-24 | 2020-08-07 | 安徽晋煤中能化工股份有限公司 | Online cleaning device of low pressure fuel gas filter |
| CN112370873A (en) * | 2020-10-27 | 2021-02-19 | 西部宝德科技股份有限公司 | High-temperature crude synthesis gas complete set filtering system |
| CN113457296A (en) * | 2021-08-09 | 2021-10-01 | 核工业理化工程研究院 | Gas-solid separation device for gas easy to form dew |
| CN113599882A (en) * | 2021-09-08 | 2021-11-05 | 安泰环境工程技术有限公司 | Filtering device and filtering method for reducing nuclear power filtering solid waste amount |
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2015
- 2015-06-08 CN CN201520390310.9U patent/CN204767971U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495046A (en) * | 2020-04-24 | 2020-08-07 | 安徽晋煤中能化工股份有限公司 | Online cleaning device of low pressure fuel gas filter |
| CN112370873A (en) * | 2020-10-27 | 2021-02-19 | 西部宝德科技股份有限公司 | High-temperature crude synthesis gas complete set filtering system |
| CN112370873B (en) * | 2020-10-27 | 2022-06-14 | 西部宝德科技股份有限公司 | High-temperature crude synthesis gas complete set filtering system |
| CN113457296A (en) * | 2021-08-09 | 2021-10-01 | 核工业理化工程研究院 | Gas-solid separation device for gas easy to form dew |
| CN113599882A (en) * | 2021-09-08 | 2021-11-05 | 安泰环境工程技术有限公司 | Filtering device and filtering method for reducing nuclear power filtering solid waste amount |
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Effective date of registration: 20160801 Address after: 100081 Haidian District Institute of South Road, Beijing, No. 76 Patentee after: Aetna Environmental Engineering Technology Co Ltd Address before: 100081 Haidian District Institute of South Road, Beijing, No. 76 Patentee before: Antai Science and Technology Co., Ltd. |