CN206843384U - A kind of dry coal dust gasification furnace with air preheat and generation steam - Google Patents
A kind of dry coal dust gasification furnace with air preheat and generation steam Download PDFInfo
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- CN206843384U CN206843384U CN201720655193.3U CN201720655193U CN206843384U CN 206843384 U CN206843384 U CN 206843384U CN 201720655193 U CN201720655193 U CN 201720655193U CN 206843384 U CN206843384 U CN 206843384U
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- air
- gasification furnace
- coal
- water
- steam
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a kind of dry coal dust gasification furnace with air preheat and generation steam.Gasification furnace includes：Gasify furnace body, heat exchanger, drum, water-cooling wall, cavity, dragveyer.Water-cooling wall is laid with the gasification furnace body, for superheated steam, gasifies and accompanies a cavity between furnace body and water-cooling wall, for heating air or oxygen.The heat exchanger is located at gasification chamber outlet.Using the dry coal dust gasification furnace with air preheat and generation air, water in water-cooling wall is heated to be superheated steam by the heat to be chemically reacted using vaporizer, and then heat the air or oxygen in second layer chuck, air or oxygen after preheating mixes with caused water vapour in heat exchanger, dry pulverized coal is sent into vaporizer as carrier gas and carries out series of chemical, dry pulverized coal is converted into coal gas, is minimized the radiation loss of gasification furnace.
Description
Technical field
It the utility model is related to a kind of dry coal powder gasification system, it is more particularly to a kind of with air preheat and to produce the dry of steam
Pulverized coal gasification furnace, belong to coal gasification power-saving technology.
Background technology
At present, coal still occupies sizable proportion in the energy-consuming in China, environment caused by order to mitigate fire coal
Pollution, Coal Gasification Technology becomes the important way of coal comprehensive utilization, extensive in sector applications such as machinery, chemical industry, weavings.
Coal Gasification Technology is chemically reacted under the high temperature conditions by coal, oxygen, vapor etc., will be flammable in coal
The process of gaseous fuel is partially converted into, and wherein dry coal powder gasification technology has very high efficiency of carbon con version and cold gas efficiency,
Oxygen demand is relatively low, and available gas content is high, and dust content is few in coal gas, clean environment firendly.But the coal gasification skill that many enterprises use
Art power consumption is high, and energy dissipation is than more serious.
The dry coal powder airflow bed gasification technology that enterprise typically uses is entrainment of coal dust by gasifying agent (oxygen and vapor)
Or coal slurry is sent into vaporizer by coal-feeding tube, the process of chemical reaction generation coal gas is carried out in vaporizer.Entrained flow bed gasification technology
Belong to HTHP gasification, available gas content is high after gasification, and efficiency of carbon con version is high.But radiation loss is higher in this technology stove,
And there is the defects of larger in UTILIZATION OF VESIDUAL HEAT IN.Through crude synthesis gas caused by chemical reaction in gasification chamber outlet temperature in gasification furnace
Degree is higher, causes substantial amounts of heat loss, sticky lime-ash can also cause coal gas flue slagging.In addition, in coal dust course of conveying,
If being unable to the aqueous water in bug dusting using the conveying of normal temperature coal dust, the purity of coal gas can be reduced.
In summary, radiation loss is larger in the dry coal powder airflow bed gasification furnace stove typically used, and discharged producer gas temperature is high,
Sensible heat loss is big, without residual heat using device, easily causes flue slagging, requires higher to air themperature, and air themperature is to even
Continue stable production to have a certain impact.
Utility model content
The purpose of this utility model is waste heat loss and the radiation loss for reducing gasification furnace, improves the thermal efficiency and coal gas
Purity, ensure the production that gasification furnace can be stablized, and provide a kind of dry coal dust gasification furnace with air preheat and generation steam.
The technical solution of the utility model is as follows：
With air preheat and produce steam dry coal dust gasification furnace, including gasification furnace body, heat exchanger, drum, water-cooling wall,
Cavity and dragveyer；The gasification furnace body penetralia is vaporizer, and vaporizer connects with coal-feeding tube；The furnace body that gasifies is interior to be laid
There is the water-cooling wall of parcel vaporizer, water-cooling wall connects with drum via upper header and lower collecting box and forms peripheral passage, after heating
Caused vapor is discharged through steam outlet on drum；A cavity is accompanied between gasification furnace body shell and water-cooling wall, the sky
Chamber connects with air intlet pipe and hot-air fairlead；It is coal gas flue at the top of vaporizer, for discharging in vaporizer through chemistry
High-temperature gas mixture caused by reaction；In coal gas flue be provided with for recovery waste heat heat exchanger, heat exchanger be provided with water inlet and
Steam (vapor) outlet, steam (vapor) outlet is connected with described hot-air fairlead by delivery pipe with coal-feeding tube, for into coal-feeding tube
The carrier gas of pulverized coal conveying is provided.
Preferably, described heat exchanger is contra-flow heat exchanger.
Preferably, described vaporizer bottom sets furnace hopper, furnace hopper is connected with dragveyer.
Further, described dragveyer is located at furnace hopper bottom.
Preferably, the side wall of described cavity is provided with air intlet pipe and hot-air fairlead, hot-air fairlead position
In cavity top, air intlet pipe is located at cavity bottom.
Preferably, it is coated with heat-preservation cotton outside described gasification furnace body.
The beneficial effects of the utility model are：
1st, gasification furnace furnace interior is laid with water-cooling wall, available for superheated steam, steam is reached a high temperature, and then heats empty
The air or oxygen of intracavitary, heat caused by coal gasification is preferably utilized, be minimized radiation loss, after heating
Air or oxygen can be also used for coal dust conveying.
2nd, the chemical reaction in vaporizer needs to carry out at high temperature under high pressure, and the load performance of water-cooling wall and cavity all compares
Preferably, the progress that chemical reaction is more stable is enable.
3rd, heat exchanger is set in gasification chamber outlet, waste heat recovery, water caused by heat exchanger can be carried out to high-temperature gas mixture
Steam mixes the carrier gas for being also used as pulverized coal conveying with the air after preheating, the aqueous water in coal dust is removed in advance, carries
The high stability of reaction and the purity of coal gas.
Brief description of the drawings
Fig. 1 is structural representation of the utility model with air preheat and the dry coal dust gasification furnace for producing steam.
Wherein：1- gasification furnace bodies；2- water-cooling walls；3- air intlet pipes；4- dragveyers；5- furnace hoppers；6- lower collecting box；7-
Cavity；8- coal-feeding tubes；9- delivery pipes；10- hot-air fairleads；11- upper headers；12- drums；13- steam outlets；14- coals
Gas flue；15- water inlets；16- heat exchangers；17- steam (vapor) outlets；18- heat-preservation cottons.
Embodiment
The utility model is further elaborated and illustrated with reference to the accompanying drawings and detailed description.In the utility model
The technical characteristic of each embodiment can carry out respective combination on the premise of not colliding with each other.
As shown in figure 1, a kind of dry coal dust gasification furnace with air preheat and generation steam, including gasification furnace body 1, heat exchange
Device 16, drum 12, water-cooling wall 2, cavity 7 and dragveyer 4.Heat-preservation cotton 18 is coated with outside gasification furnace body 1, gasify furnace body 1
Penetralia is vaporizer, and vaporizer connects the reaction zone as coal dust gasification with coal-feeding tube 8.Bag is laid with gasification furnace body 1
The water-cooling wall 2 of vaporizer is wrapped up in, water-cooling wall 2 connects with drum 12 via upper header 11 and lower collecting box 6 and forms peripheral passage, heating
Caused vapor is discharged through steam outlet 13 on drum 12 afterwards；Accompanied between the gasification shell of furnace body 1 and water-cooling wall
Chamber 7, the cavity 7 connect with air intlet pipe 3 and hot-air fairlead 10；Hot-air fairlead 10 is located at the upper of the side wall of cavity 7
Portion, air intlet pipe 3 are located at the bottom of the side wall of cavity 7.It is the coal gas flue 14 for passing body of heater at the top of vaporizer, for discharging gas
Change interior through high-temperature gas mixture caused by chemical reaction；The contra-flow heat exchanger 16 for recovery waste heat is provided with coal gas flue 14,
Heat exchanger 16 is provided with water inlet 15 and steam (vapor) outlet 17, and steam (vapor) outlet 17 is connected to delivery pipe 9 with hot-air fairlead 10,
Then connected with coal-feeding tube 8, for providing the carrier gas of pulverized coal conveying into coal-feeding tube 8.Vaporizer bottom sets furnace hopper 5, cold
Ash bucket 5 is connected with dragveyer 4.Dragveyer 4 is located at the bottom of furnace hopper 5.
It is as follows using the coal dust gasification method of above-mentioned dry coal dust gasification furnace：
Coal dust chemically reacts in vaporizer, and caused heat water-cooling wall 2, water-cooling wall 2 is via upper header 11
Connected with lower collecting box 6 with drum 12, produce superheated steam after heated, superheated steam is discharged through steam outlet 13 on drum 12；
Air or oxygen enters cavity 7 via the air intlet pipe 3 of the side wall of cavity 7, and a part of water cooled wall 2 of heat is conducted to cavity 7
Interior air or oxygen, the air or oxygen after heating are drawn by the side wall hot-air fairlead 10 of cavity 7 again；On vaporizer
Portion, heat exchanger 16 reclaim the waste heat of high-temperature crude synthesis gas, produce vapor, with being drawn by cavity 7 after the extraction of steam (vapor) outlet 17
Preheated air or oxygen mix, coal dust is sent into vaporizer through coal-feeding tube 8 as carrier gas and chemically reacted；After chemical reaction
Caused high-temperature crude synthesis gas is discharged through coal gas flue 14, and caused lime-ash is discharged through furnace hopper 5 by dragveyer 4.
Embodiment described above is a kind of preferable scheme of the present utility model, so itself and be not used to limit this practicality
It is new.Those of ordinary skill about technical field, can be with the case where not departing from spirit and scope of the present utility model
Make a variety of changes and modification.Therefore the technical scheme that all modes for taking equivalent substitution or equivalent transformation are obtained, all falls within
In the scope of protection of the utility model.
Claims (6)
1. a kind of dry coal dust gasification furnace with air preheat and generation steam, it is characterised in that including gasification furnace body (1), change
Hot device (16), drum (12), water-cooling wall (2), cavity (7) and dragveyer (4)；Described gasification furnace body (1) penetralia is gasification
Room, vaporizer connect with coal-feeding tube (8)；The water-cooling wall (2) of parcel vaporizer, water-cooling wall (2) are laid with gasification furnace body (1)
Connected via upper header (11) and lower collecting box (6) with drum (12) and form peripheral passage, caused vapor is through vapour after heating
Wrap steam outlet (13) discharge on (12)；Gasification furnace body (1) accompanies a cavity (7), the cavity between shell and water-cooling wall
(7) connected with air intlet pipe (3) and hot-air fairlead (10)；It is coal gas flue (14) at the top of vaporizer, for discharging gas
Change interior through high-temperature gas mixture caused by chemical reaction；The heat exchanger (16) for recovery waste heat is provided with coal gas flue (14),
Heat exchanger (16) is provided with water inlet (15) and steam (vapor) outlet (17), steam (vapor) outlet (17) and described hot-air fairlead (10)
Connected by delivery pipe (9) with coal-feeding tube (8), for providing the carrier gas of pulverized coal conveying into coal-feeding tube (8).
2. the dry coal dust gasification furnace with air preheat and generation steam as claimed in claim 1, it is characterised in that described changes
Hot device (16) is contra-flow heat exchanger.
3. the dry coal dust gasification furnace with air preheat and generation steam as claimed in claim 1, it is characterised in that described gas
Change room bottom and furnace hopper (5) is set, furnace hopper (5) is connected with dragveyer (4).
4. the dry coal dust gasification furnace with air preheat and generation steam as claimed in claim 3, it is characterised in that described drags for
Slag machine (4) is located at furnace hopper (5) bottom.
5. the dry coal dust gasification furnace with air preheat and generation steam as claimed in claim 1, it is characterised in that described sky
The side wall of chamber (7) is provided with air intlet pipe (3) and hot-air fairlead (10), and hot-air fairlead (10) is located on cavity (7)
Portion, air intlet pipe (3) are located at cavity (7) bottom.
6. the dry coal dust gasification furnace with air preheat and generation steam as claimed in claim 1, it is characterised in that described gas
Change and be coated with heat-preservation cotton (18) outside furnace body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720655193.3U CN206843384U (en) | 2017-06-07 | 2017-06-07 | A kind of dry coal dust gasification furnace with air preheat and generation steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720655193.3U CN206843384U (en) | 2017-06-07 | 2017-06-07 | A kind of dry coal dust gasification furnace with air preheat and generation steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206843384U true CN206843384U (en) | 2018-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720655193.3U Withdrawn - After Issue CN206843384U (en) | 2017-06-07 | 2017-06-07 | A kind of dry coal dust gasification furnace with air preheat and generation steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206843384U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057768A (en) * | 2017-06-07 | 2017-08-18 | 杭州浙大天元科技有限公司 | Dry coal dust gasification furnace and its method with air preheat and generation steam |
| CN111692885A (en) * | 2020-06-24 | 2020-09-22 | 广州汤姆逊电气有限公司 | Integrative mutual inductance three-purpose heating function furnace of high temperature pouring |
| CN114575811A (en) * | 2022-04-29 | 2022-06-03 | 太原理工大学 | Device and method for extracting oil gas from organic rock reservoirs with different burial depths through convection heating |
-
2017
- 2017-06-07 CN CN201720655193.3U patent/CN206843384U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057768A (en) * | 2017-06-07 | 2017-08-18 | 杭州浙大天元科技有限公司 | Dry coal dust gasification furnace and its method with air preheat and generation steam |
| CN111692885A (en) * | 2020-06-24 | 2020-09-22 | 广州汤姆逊电气有限公司 | Integrative mutual inductance three-purpose heating function furnace of high temperature pouring |
| CN114575811A (en) * | 2022-04-29 | 2022-06-03 | 太原理工大学 | Device and method for extracting oil gas from organic rock reservoirs with different burial depths through convection heating |
| CN114575811B (en) * | 2022-04-29 | 2022-07-22 | 太原理工大学 | Device and method for extracting oil gas from organic rock reservoirs with different burial depths through convection heating |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20230418 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20230418 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |