CN205328944U - Prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection - Google Patents
Prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection Download PDFInfo
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- CN205328944U CN205328944U CN201520963349.5U CN201520963349U CN205328944U CN 205328944 U CN205328944 U CN 205328944U CN 201520963349 U CN201520963349 U CN 201520963349U CN 205328944 U CN205328944 U CN 205328944U
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Abstract
The utility model discloses a prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection, including coal gas generation system, the prefabricated system of addition material and addition material stoving vent gas treatment system in, coal gas generation system includes two -sectional type gas producer, tar collector, cyclone, urgent disjunctor and stokehold water sealed tank, the prefabricated system of addition material including fire the burning furnace draught fan, fire burning furnace, addition material drying -machine, addition material flour mill, addition material screening ware and add the feed bin, addition material stoving vent gas treatment system in includes heat exchanger, buffer tank, scrubbing tower, sedimentation tank and clean water basin. The utility model discloses a with cubic or paste -like addition material is dried, obtain the likepowder addition material of qualified drying behind the grinding, screening, can satisfy fly ash sintered ceramsite 's production demand. And simultaneously, the utility model discloses a two -sectional type gas producer is as heat source equipment, has carried out abundant processing to addition material stoving tail gas, can guarantee environmental protection cleaner production.
Description
Technical field
This utility model relates to waste emissions technical field of comprehensive utilization, is specifically related to the coal gas comprehensive utilization haydite additive prefabrication system of a kind of environment-protecting clean。
Background technology
From artificial lightweight haydite in 1913 after the U.S. comes out, countries in the world are according to practical situation, active development is with flyash for main raw material(s), adopt the artificial lightweight haydite substituting the non-renewable resources such as rubble, cobble that sintering process (boiler-turbine CCS, rotary kiln, sintering machine) produces, it is widely used in the building traffic industries such as high building structure, concrete component, highway, inside and outside wall board, and develops the biofilter material for administering the fields such as municipal sewage, industrial wastewater, the agricultural soil transformation of the way。
Introduce according to Ltech Corp of Britain data, the haydite of its production is used for structural concrete every cube about 20~25 pounds, higher than local rubble price 2~3 times, but due to structural light-weight concrete relatively normal concrete weight reduction 25%, drying shrinkage reduces 35%, and thermal expansion factor reduces 42%, heat conductivity reduces 62%, heatproof reaches about thousand degree, then saving entirety investment is 5~10%, therefore applies relatively common abroad。
Haydite is applied later at home, and the every annual of yield is at 4,000,000 m at the end of last century3。Major part is clay, haydites of book structure, and minority is lytag, and obtains certain achievement, such as shear wall structure House with Big Room Openning building, lake water road, Tianjin 16, No. 22 shear wall structure office buildings in Langao road, Shanghai City etc.。
In sum, sintering ceramsite of fly ash is widely used in each field due to characteristics such as its lightweight, high-strength, wear-resisting, impervious, antidetonation, sound absorption, insulations。
When producing sintering ceramsite of fly ash, need to add the additives such as gangue, mine tailings, clay as internal combustion agent and bonding agent, qualified additive should present dry powdered, and the additive raw material obtained in production practices is often for block or pasty state, it is thus desirable to additive is carried out prefabricated, to meet the Production requirement of sintering ceramsite of fly ash。
Utility model content
In view of this, the purpose of this utility model is in that to provide the coal gas comprehensive utilization haydite additive prefabrication system of a kind of environment-protecting clean, it is possible to additive raw material is carried out pretreatment, to meet the Production requirement of sintering ceramsite of fly ash。
For reaching above-mentioned purpose, this utility model provides following technical scheme:
The coal gas comprehensive utilization haydite additive prefabrication system of a kind of environment-protecting clean, dries exhaust treatment system including gas generating system, additive prefabrication system and additive;
Described gas generating system includes two stage type gas generating furnace, tar well, cyclone dust extractor, emergency cut-off device and stokehold water sealed tank, described two stage type gas generating furnace includes top belljar valve, top retort section body of heater, bottom gasification section body of heater and bottom ash-pan, described retort section body of heater is connected with tar well, described gasification section body of heater is connected with cyclone dust extractor, and the outlet conduit of described tar well and cyclone dust extractor introduces stokehold water sealed tank by emergency cut-off device after converging;
Described additive prefabrication system includes combustion furnace air-introduced machine, combustion furnace, additive dehydrator, additive flour mill, additive sifter and interpolation feed bin, the gas exit pipeline of described stokehold water sealed tank is connected with combustion furnace, the wind pipe of described combustion furnace air-introduced machine is connected with combustion furnace, the hot air outlet pipeline of described combustion furnace is connected with additive dehydrator, the drier outlet of described additive dehydrator is connected with additive flour mill, the powder outlet of described additive flour mill is connected with additive sifter, the powder outlet of described additive sifter is connected with adding feed bin;
Described additive is dried exhaust treatment system and is included heat exchanger, surge tank, scrubbing tower, sedimentation tank and clear water reserviors, the drying offgas outlet pipeline of described additive dehydrator is by being connected with surge tank after the hot media channel of heat exchanger, the wind pipe of described combustion furnace air-introduced machine is by being connected with combustion furnace after the cold medium channel of heat exchanger, the condensation-water drain pipeline of described heat exchanger and surge tank is connected with sedimentation tank, described sedimentation tank is connected with clear water reserviors, described clear water reserviors are connected with the spray system in scrubbing tower by circulating pump, described wash tower bottoms is connected with sedimentation tank, the offgas outlet pipeline of described surge tank is connected with scrubbing tower bottom, described scrubbing tower top is connected with toxic emission chimney。
Further, described gas generating system also includes drum and gas generator air-introduced machine, described gasification section body of heater is provided with water holding jacket, described drum is connected with softening grid, the water holding jacket entrance and exit of gasification section body of heater is connected with drum respectively, the steam outlet of drum is divided into two-way, and a pass enters two stage type gas generating furnace and is used as sealing gland steam, and the wind pipe of another road and gas generator air-introduced machine introduces after converging and is used as gasifying agent bottom two stage type gas generating furnace。
Further, described gas generating system also includes residual gas flashback tank and water seal feedwater piping, and industry water pipe network is connected with residual gas flashback tank, ash-pan, emergency cut-off device and stokehold water sealed tank respectively by water seal feedwater piping。
Further, described additive dehydrator is roller drying machine。
Further, described additive sifter is spin vibration sieve。
Further, the powder outlet of described additive sifter is connected with adding feed bin by single-screw conveyer。
Further, described heat exchanger is tubular heat exchanger, and hot media channel is shell side passage, and cold medium channel is tube side passage。
Further, described sedimentation tank is two-stage sedimentation tank, and upper level sedimentation tank is connected with next stage sedimentation tank by overfall。
Further, described scrubbing tower is packed tower。
The beneficial effects of the utility model are in that:
1, this utility model is provided with additive dehydrator block or pasty state additive (such as gangue, mine tailings, clay) is carried out drying and processing, then the additive flour mill additive to drying is set and carries out grinding, additive after grinding sieves through additive sifter, obtain qualified dry powdery additive, it is possible to meet the Production requirement of sintering ceramsite of fly ash。
2, this utility model adopts two stage type gas generating furnace as heat resource equipment, and two stage type gas generating furnace includes top retort section body of heater and bottom gasification section body of heater;The tar that top retort section body of heater is formed is low temperature distillation product, and its mobility is better, is collected by tar well and centrally disposes;The gasification gas that bottom gasification section body of heater generates is without tar;The mixed gas that gasification gas is formed with dry distillation gas is semiwater gas, is also heating gas, comparatively pure, without tar, does not need cooling and purifying。Therefore, this utility model improves calorific value of gas and gasification efficiency, and decreases environmental pollution。
3, because the additive produced in additive prefabrication process dries tail gas mainly containing additive dust, this utility model is provided with heat exchanger, make additive dry tail gas and first pass through heat exchange cold air, to make full use of the heat of additive drying tail gas, part larger particles dust and condensed water are deposited in heat exchanger and regularly discharge simultaneously, tail gas after heat exchange enters back into surge tank, part water vapour is made to condense further and take away a small amount of dust, after last tail gas carries out cleaning dust by scrubbing tower water, through toxic emission smoke stack emission, therefore, additive is dried tail gas and has been carried out abundant process by this utility model, ensure that environment-protecting clean produces。
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, this utility model provides drawings described below to illustrate:
Fig. 1 is the structural representation of gas generating system;
Fig. 2 is the structural representation of additive prefabrication system;
Fig. 3 is the structural representation that additive dries exhaust treatment system。
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail。
The coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean of the present utility model, dries exhaust treatment system including gas generating system, additive prefabrication system and additive。
Fig. 1 is the structural representation of gas generating system, as shown in the figure, gas generating system includes two stage type gas generating furnace 11, tar well 12, cyclone dust extractor 13, emergency cut-off device 14 and stokehold water sealed tank 15, described two stage type gas generating furnace 11 includes top belljar valve 111, top retort section body of heater 112, bottom gasification section body of heater 113 and bottom ash-pan 114, described retort section body of heater 112 is connected with tar well 12, described gasification section body of heater 113 is connected with cyclone dust extractor 13, the outlet conduit of described tar well 12 and cyclone dust extractor 13 introduces stokehold water sealed tank 15 by emergency cut-off device 14 after converging。
Described gas generating system also includes drum 16 and gas generator air-introduced machine 17, described gasification section body of heater 113 is provided with water holding jacket, described drum 16 is connected with softening grid 18, the water holding jacket entrance and exit of gasification section body of heater 113 is connected with drum 16 respectively, the steam outlet of drum 16 is divided into two-way, one pass enters two stage type gas generating furnace 11 and is used as sealing gland steam, and the wind pipe of another road and gas generator air-introduced machine 17 introduces after converging and is used as gasifying agent bottom two stage type gas generating furnace 11。
Described gas generating system also includes residual gas flashback tank 19 and water seal feedwater piping, and industry water pipe network 10 is connected with residual gas flashback tank 19, ash-pan 114, emergency cut-off device 14 and stokehold water sealed tank 15 respectively by water seal feedwater piping。
First coal enters two stage type gas generating furnace 11 from furnace roof coal bunker through two groups of belljar valves 111, coal dries and long low temperature distillation through fully at retort section body of heater 112, gradually form semicoke, enter gasification section body of heater 113, the gasifying agent that red-hot semicoke blasts at gasification section body of heater 113 and furnace bottom fully reacts, form coal ash through furnace reduction layer, oxide layer, grate drive and be automatically drained out from bottom ash-pan 114。
Coal, in the process of low temperature distillation, is called dry distillation gas, the top coal gas of composition two stage type gas generating furnace 11 with the coal gas that fugitive constituent precipitation is main generation, accounts for the 40% of total coal gas amount, the higher (6700kJ/Nm of its calorific value3) temperature relatively low (about 120 DEG C), and containing substantial amounts of tar。This tar formed at retort section body of heater 112 is low temperature distillation product, and its mobility is better, is collected by tar well 12 and centrally disposes。At gasification section body of heater 113, the coal gas that red-hot semicoke and gasifying agent (air, water vapour) generate through series of chemical such as reduction, oxidations, it is called gasification gas, the bottom coal gas of composition two stage type gas generating furnace 11, account for the 60% of total coal gas amount, the relatively low (6400kJ/Nm of its calorific value3), temperature higher (about 450 DEG C)。Because coal is at retort section body of heater 112 low temperature distillation ample time, the coal entering gasification section body of heater 113 has become semicoke, and the gasification gas therefore generated is without tar。Gasification gas forms mixed gas after cyclone dust extractor 13 dedusting and goes burning for providing thermal source through emergency cut-off device 14 and stokehold water sealed tank 15 with dry distillation gas。
Gasification section body of heater 113 being provided with water leg, the softening water in drum 16 is introduced water leg, by this self-produced water vapour, a water vapour part is used as sealing gland steam, and the air that another part introduces with gas generator air-introduced machine 17 mixes as gasifying agent。
Gas generating system is owing to have employed the hot detar technique of two section type, and the coal gas obtained is semiwater gas, is also heating gas, comparatively pure, without tar, does not need cooling and purifying。Gas composition is CO, H2、CH4, combustible component and the CO such as CnHm2、N2Etc. non-combustible composition, and in gasification the combustion adjuvant oxygen of non-complete reaction and the water vapour that do not decompose completely。Gas generator adopts stone coal, does not need to crush;Coal gas, for continuously generating and using, does not need gas holder to store。
Fig. 2 is the structural representation of additive prefabrication system, as shown in the figure, additive prefabrication system includes combustion furnace air-introduced machine 21, combustion furnace 22, additive dehydrator 23, additive flour mill 24, additive sifter 25 and interpolation feed bin 26, the gas exit pipeline of described stokehold water sealed tank 15 is connected with combustion furnace 22, 21 wind pipes of described combustion furnace air-introduced machine are connected with combustion furnace 22, the hot air outlet pipeline of described combustion furnace 22 is connected with additive dehydrator 23, the drier outlet of described additive dehydrator 23 is connected with additive flour mill 24, the powder outlet of described additive flour mill 24 is connected with additive sifter 25, the powder outlet of described additive sifter 25 is connected with adding feed bin 26。
Described additive dehydrator 23 is roller drying machine, and described additive sifter 25 is spin vibration sieve。
The powder outlet of described additive sifter 25 is connected with adding feed bin 26 by single-screw conveyer。
The air mixed combustion that coal gas introduces with combustion furnace air-introduced machine 21 in combustion furnace 22 produces hot-air, from the hot-air of combustion furnace 22 additive (such as gangue, mine tailings, clay) with block or pasty state and flow to additive dehydrator 23 and carry out heat exchange, additive after hot-air dry flow to additive flour mill 24 from additive dehydrator 23 outlet and carries out grinding, and the additive after grinding screens out qualified dry powdery additive through additive sifter 25 and flows into interpolation feed bin 26。
Fig. 3 is the structural representation that additive dries exhaust treatment system, as shown in the figure, additive is dried exhaust treatment system and is included heat exchanger 31, surge tank 32, scrubbing tower 33, sedimentation tank 34 and clear water reserviors 35, the drying offgas outlet pipeline of described additive dehydrator 23 is by being connected with surge tank 32 after the hot media channel of heat exchanger 31, the wind pipe of described combustion furnace air-introduced machine 21 is by being connected with combustion furnace 22 after the cold medium channel of heat exchanger 31, the condensation-water drain pipeline of described heat exchanger 31 and surge tank 32 is connected with sedimentation tank 34, described sedimentation tank 34 is connected with clear water reserviors 35, described clear water reserviors 35 are connected with the spray system in scrubbing tower 33 by circulating pump 36, it is connected with sedimentation tank 34 bottom described scrubbing tower 33, the offgas outlet pipeline of described surge tank 32 is connected with scrubbing tower 33 bottom, described scrubbing tower 33 top is connected with toxic emission chimney。
Described heat exchanger 31 is tubular heat exchanger, and hot media channel is shell side passage, and cold medium channel is tube side passage。
Described sedimentation tank 34 is two-stage sedimentation tank, and upper level sedimentation tank is connected with next stage sedimentation tank by overfall。
Described scrubbing tower 33 is packed tower。
The drying tail gas produced in additive prefabrication process is mainly containing additive dust, and tail gas first passes through heat exchanger 31 and carries out heat exchange with combustion furnace 22 required air;Tail gas is after air cools down, and part larger particles dust and condensed water are deposited in heat exchanger 31 and regularly discharge, and the tail gas after heat exchange enters back into surge tank 32, makes part water vapour condense further and take away a small amount of dust;After last tail gas entrance scrubbing tower 33 carries out cleaning dust with water, through toxic emission smoke stack emission。Slurry and scrubbing tower 33 spray washing waste water that heat exchanger 31 and surge tank 32 are got rid of are settled out sediment discharge at sedimentation tank 34, and upper strata clear water flows into clear water reserviors 35 circulated sprinkling and uses。
What finally illustrate is, preferred embodiment above is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from this utility model claims limited range。
Claims (9)
1. the coal gas comprehensive utilization haydite additive prefabrication system of an environment-protecting clean, it is characterised in that: include gas generating system, additive prefabrication system and additive and dry exhaust treatment system;
Described gas generating system includes two stage type gas generating furnace, tar well, cyclone dust extractor, emergency cut-off device and stokehold water sealed tank, described two stage type gas generating furnace includes top belljar valve, top retort section body of heater, bottom gasification section body of heater and bottom ash-pan, described retort section body of heater is connected with tar well, described gasification section body of heater is connected with cyclone dust extractor, and the outlet conduit of described tar well and cyclone dust extractor introduces stokehold water sealed tank by emergency cut-off device after converging;
Described additive prefabrication system includes combustion furnace air-introduced machine, combustion furnace, additive dehydrator, additive flour mill, additive sifter and interpolation feed bin, the gas exit pipeline of described stokehold water sealed tank is connected with combustion furnace, the wind pipe of described combustion furnace air-introduced machine is connected with combustion furnace, the hot air outlet pipeline of described combustion furnace is connected with additive dehydrator, the drier outlet of described additive dehydrator is connected with additive flour mill, the powder outlet of described additive flour mill is connected with additive sifter, the powder outlet of described additive sifter is connected with adding feed bin;
Described additive is dried exhaust treatment system and is included heat exchanger, surge tank, scrubbing tower, sedimentation tank and clear water reserviors, the drying offgas outlet pipeline of described additive dehydrator is by being connected with surge tank after the hot media channel of heat exchanger, the wind pipe of described combustion furnace air-introduced machine is by being connected with combustion furnace after the cold medium channel of heat exchanger, the condensation-water drain pipeline of described heat exchanger and surge tank is connected with sedimentation tank, described sedimentation tank is connected with clear water reserviors, described clear water reserviors are connected with the spray system in scrubbing tower by circulating pump, described wash tower bottoms is connected with sedimentation tank, the offgas outlet pipeline of described surge tank is connected with scrubbing tower bottom, described scrubbing tower top is connected with toxic emission chimney。
2. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterized in that: described gas generating system also includes drum and gas generator air-introduced machine, described gasification section body of heater is provided with water holding jacket, described drum is connected with softening grid, the water holding jacket entrance and exit of gasification section body of heater is connected with drum respectively, the steam outlet of drum is divided into two-way, one pass enters two stage type gas generating furnace and is used as sealing gland steam, the wind pipe of another road and gas generator air-introduced machine introduces after converging and is used as gasifying agent bottom two stage type gas generating furnace。
3. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterized in that: described gas generating system also includes residual gas flashback tank and water seal feedwater piping, industry water pipe network is connected with residual gas flashback tank, ash-pan, emergency cut-off device and stokehold water sealed tank respectively by water seal feedwater piping。
4. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: described additive dehydrator is roller drying machine。
5. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: described additive sifter is spin vibration sieve。
6. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: the powder outlet of described additive sifter is connected with adding feed bin by single-screw conveyer。
7. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: described heat exchanger is tubular heat exchanger, and hot media channel is shell side passage, and cold medium channel is tube side passage。
8. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: described sedimentation tank is two-stage sedimentation tank, and upper level sedimentation tank is connected with next stage sedimentation tank by overfall。
9. the coal gas comprehensive utilization haydite additive prefabrication system of environment-protecting clean according to claim 1, it is characterised in that: described scrubbing tower is packed tower。
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CN201520963349.5U CN205328944U (en) | 2015-11-27 | 2015-11-27 | Prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection |
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CN201520963349.5U CN205328944U (en) | 2015-11-27 | 2015-11-27 | Prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection |
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CN201520963349.5U Expired - Fee Related CN205328944U (en) | 2015-11-27 | 2015-11-27 | Prefabricated system of haydite addition material is used multipurposely to clear coal gas of environmental protection |
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