CN105505473A - Coal gasification process nozzle with protective cover - Google Patents
Coal gasification process nozzle with protective cover Download PDFInfo
- Publication number
- CN105505473A CN105505473A CN201610074856.2A CN201610074856A CN105505473A CN 105505473 A CN105505473 A CN 105505473A CN 201610074856 A CN201610074856 A CN 201610074856A CN 105505473 A CN105505473 A CN 105505473A
- Authority
- CN
- China
- Prior art keywords
- protecting cover
- nozzle
- spray head
- cover body
- outer oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- 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
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a coal gasification process nozzle with a protective cover. The coal gasification technology comprises a central oxygen spray head, a water-coal-slurry spray head and an external oxygen spray head, wherein the end surface of the external oxygen spray head is in the shape of a circular arc; a cooling water pipe is coiled outside the external oxygen spray head; the protective cover for hooding an end opening of the external oxygen spray head is arranged at the end opening of the external oxygen spray head; the protective cover comprises a protective cover body and protective lugs arranged on the outer side of the protective cover body; a spray hole opening of the external oxygen spray head is formed in the center of the protective cover body; four to six connecting holes are formed in the periphery of the protective cover body; the protective cover is connected with the external oxygen spray head through a metal screw rod; one end of the metal screw rod penetrates into the connecting holes of the protective cover body, and the other end of the metal screw rod is fixed to the external oxygen spray head. The coal gasification process nozzle has the advantages that the front end surface of the external oxygen spray head of the process nozzle can be effectively prevented from being cracked, ablated or burnt; pure oxygen ablation of the external edge of the front end surface of the external oxygen spray head as well as firing cracks and burnout at the welding points of the external oxygen spray head and the cooling water pipe are effectively prevented; the whole operational cycle of the process nozzle is prolonged.
Description
Technical field
The present invention relates to water coal slurry pressurized gasification technology field, be specifically related to a kind of coal gasifying process nozzle being provided with protecting cover.
Background technology
Key core parts in coal gasifying process nozzle system Coal-water Slurry Pressurized Gasification Unit, its quality concerns the industrialized development of coal gasifying process.In coal gasification reaction technological process, whole raw material, auxiliary material (central oxygen, coal water slurry, outer oxygen) continuously need be sprayed in vapourizing furnace by technique nozzle, reach coal gasification reaction.
At present, according to the mounting means of nozzle, the pattern of technique nozzle is divided into two kinds: a kind of is top nozzle being installed on vapourizing furnace, and this mode is referred to as vertical single spraying formula technique nozzle; Another kind is mounted in vapourizing furnace shaft circumference, in opposed installation, is called opposed type technique nozzle.
These two kinds of technique nozzles from principle be functionally the same substantially, structurally there is no larger difference yet.
The structural representation of composition graphs 1 prior art processes nozzle of the present invention, is summarized as follows the structure of coal gasifying process nozzle and principle of work.
Before installation coal gasifying process nozzle, should ensure that gasification in-furnace temperature is at about 800 ~ 1000 DEG C.During installation, the first step, by technique nozzle N4 and N5 mouth with corresponding cooling water pipeline by connection by metal hose, ensure that water coolant can normal circulation, reach cooling performance; Second step, technique nozzle is loaded the correspondence position of vapourizing furnace, with bolt by the mounting flange FL of coal gasifying process nozzle and vapourizing furnace furnace top flange alignment fastening, reach seal request; 3rd step, after technique nozzle fixes, central oxygen adapter is docked with technique nozzle N1 interface, and with bolt presses, ensures that it seals; 4th step, coal water slurry adapter to be docked with technique nozzle N2 interface, and with bolt presses, ensure that it seals; 5th step, outer shroud oxygen pipeline to be docked with technique nozzle N3 interface, and ensure seal request with bolt presses.
After all pipelines connect, three kinds of former, auxiliary materials (central oxygen, coal water slurry, outer oxygen) are passed in pipeline by the requirement of DCS Controlling System, spray after technique nozzle head shower nozzle guiding and pre-mixing.Material is after ejection technique nozzle, under gasification furnace high-temperature (800 ~ 1000 DEG C), high pressure (about 4.0Mpa or about 6.0Mpa), oxygen enrichment (99.9% pure oxygen) environment, there is scission reaction instantaneously, generate synthetic gas (Co+H), high temperature molten slag and other gas of part etc.After normal lytic reaction, in-furnace temperature will remain on about 1350 DEG C (according to the difference of feed coal, in stove, cracking temperature of reaction has certain deviation), and furnace pressure will remain on about 4.5Mpa or 6.5Mpa.In the whole working process of technique nozzle, water coolant will circulate incessantly, cool technique nozzle outer oxygen nozzle end.
Because coal gasifying process nozzle outer oxygen nozzle and cooling water coil are in the front portion of whole coal gasifying process nozzle, directly lose gas contact with the high temperature in stove, high pressure, height, by furnace high-temperature radiation and hot high pressure stream air scour, the intensity, corrosion resistance etc. of nozzle outer oxygen nozzle all directly affect result of use and the work-ing life of whole technique nozzle.
Most of technique nozzles of current use, its outer oxygen nozzle end face is two dimensional structure, through often there will be outer oxygen nozzle front plan big area crack performance after normal use for some time, thus causing outer oxygen nozzle front end face undercapacity, affecting work-ing life.
The utility model patent of the ZL201420613814.8 of the applicant's earlier application, the outer oxygen nozzle end face of two dimensional structure is improved to arc-shaped and circular arc outwardly, effectively alleviate shower nozzle be full of cracks or the risk of burning.But, because outer oxygen nozzle front end adopts circular arc evagination, the water-cooled tube welded with it, also with outside it, causes the weld of outer oxygen nozzle and water-cooled tube to be in high temperature and high pressure environment, time one can cause cracking and the damage of weld seam for a long time, has a strong impact on the work-ing life of technique nozzle.
Summary of the invention
The object of this invention is to provide a kind of guarantee outer oxygen nozzle use under long-time high temperature, high erosion environment and do not produce end face be full of cracks or ablation, outer oxygen nozzle front end face and the ablation of outer round arris edge pure oxygen and outer oxygen nozzle and the long term high temperature ablation of water-cooled tube commissure can be avoided again to cause problems of crack, thus improve the operating performance of whole technique nozzle and extend the coal gasifying process nozzle being provided with protecting cover in its life-span.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of coal gasifying process nozzle being provided with protecting cover, comprise the central oxygen shower nozzle arranged with one heart successively from inside to outside, slurry spray head and outer oxygen nozzle, the end face of outer oxygen nozzle is arc-shaped, the external coiling water-cooled tube of outer oxygen nozzle, described outer oxygen nozzle port establishes a cover to buckle the protecting cover of outer oxygen nozzle port, described protecting cover comprises protecting cover body and is located at the earflap outside protecting cover body, protecting cover body central establishes the spray orifice mouth of outer oxygen nozzle, protecting cover body perimeter arranges 4-6 connecting hole, protecting cover is connected with outer oxygen nozzle by the metal screw mandrel penetrating connecting hole, described metal screw mandrel one end penetrates the connecting hole of protecting cover body, the other end and outer oxygen nozzle body are fixed.
Described protecting cover is high temperature material, preferred Al
2o
3, the metal oxide of Cr-90.
The metal screw mandrel of described protecting cover is have flexibility or become the superalloy steel of chain, and one end is made hook-shaped or tail end and established pad.
Described connecting hole is slotted eye, and in metal screw mandrel embedded groove, through slotted eye, metal screw mandrel tail end is by outside draw-in groove hole.
Described earflap is projected on the periphery of protecting cover body, in circular arc lid, and earflap and this made in one piece of protecting cover.
The spray orifice mouth same hole concentric on the spray orifice of outer oxygen nozzle of described protecting cover body central.
The preferred even number of hole count of described connecting hole, is equidistantly arranged.
Metal screw mandrel one end and the fixed form of outer oxygen nozzle be weld, grafting or the one of splicing.
The present invention compared with prior art, has the following advantages: the present invention is the coal gasifying process nozzle that one is provided with protecting cover (cover), can meet the user demand of coal slurry gasifier to technique nozzle completely; Effectively can prevent the be full of cracks of technique nozzle outer oxygen nozzle front end face or ablation, burn; Effectively can also prevent the pure oxygen ablation of the outer rib of outer oxygen nozzle front end face simultaneously, and the hardening cracking of outer oxygen nozzle and water-cooled tube weld, to blow; The work-ing life of technique nozzle outer oxygen nozzle about 30% can be extended, thus be conducive to the cycle of operation extending whole technique nozzle, solve technique nozzle use in because of outer oxygen nozzle premature breakdown the practical problems of blowing out.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art processes nozzle.
Fig. 2 is a kind of structural representation being provided with the coal gasifying process nozzle of protecting cover of the present invention.
Fig. 3 is a kind of structural representation being provided with protective cover in the coal gasifying process nozzle embodiments 1 of protecting cover of the present invention.
Fig. 4 is a kind of structural representation being provided with protective cover in the coal gasifying process nozzle embodiments 3 of protecting cover of the present invention.
1, central oxygen shower nozzle; 2, slurry spray head; 3, outer oxygen nozzle; 4, water-cooled tube; 5, protecting cover; 51, protecting cover body; 52, earflap; 53, spray orifice mouth; 54, connecting hole; 6, metal screw mandrel.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Embodiment 1
As shown in Figure 2, a kind of coal gasifying process nozzle being provided with protecting cover, comprise the central oxygen shower nozzle 1, slurry spray head 2 and the outer oxygen nozzle 3 that arrange with one heart successively from inside to outside, the end face of described outer oxygen nozzle 3 is arc-shaped, described outer oxygen nozzle 3 periphery coiling water-cooled tube 4.
A protecting cover 5 is established in outer oxygen nozzle 3 port, and described protecting cover 5 is made up of refractory metal oxide material, and concrete composition is Al
2o
3, the metal oxide of Cr-90.Protecting cover 5 is connected with outer oxygen nozzle 3 by wire (bar) 6, and protecting cover 5 can cover the port of button outer oxygen nozzle 3.
Described protecting cover 5 comprises protecting cover body 51 and earflap 52.Protecting cover body 51 dual-side is symmetrical arranged a pair circular arc lid earflap 52, earflap 52 projection protecting cover body 51 periphery, and cover cap gives prominence to the commissure of outer oxygen nozzle 3, and one made by protecting cover body 51 and earflap 52.The spray orifice mouth 53 of outer oxygen nozzle 3 is offered at protecting cover body 51 center, spray orifice mouth 53 same hole concentric on the spray orifice of outer oxygen nozzle 3.As shown in Figure 3, protecting cover body 51 periphery equidistantly arranges 6 slotted eyes 54, described wire (bar) 6 is that high-temperature alloy steel (one of Inconel625 or Incoly825) is made, the shape of wire (bar) 6 one termination is greater than slotted eye 54 hole shape, wire (bar) 6 is through slotted eye 54, in embedded groove, formed affixed with protecting cover body 51, the other end and outer oxygen nozzle 3 outer wall are welded and fixed.
Embodiment 2
Four earflaps 52 that protecting cover body 51 and outside thereof are equidistantly arranged are made by high temperature ceramic material, protecting cover body 51 is equidistantly provided with of 4 slotted eyes, 54,4 wires (bar) 6 and penetrates slotted eye 54 respectively, in embedded groove, with the place's grafting of outer oxygen nozzle 3 outer wall, all the other are with embodiment 1.
Embodiment 3
As shown in Figure 4, protecting cover body 51 inwall is equidistantly provided with 6 location counterbores 54 and locating slot, and 6 wire (bar) 6 one end penetrate location counterbore 54 respectively, and embed in locating slot, the other end and outer oxygen nozzle 3 outer wall are welded and fixed, and all the other are with embodiment 1.To sink (groove) hole and locating slot and be located at protecting cover body 51 inwall, and make wire (bar) 6 by protecting cover 5 integral cover, avoid wire (bar) 6 by the risk of high temperature ablation, also efficiently solve the connectivity problem of metallic substance and non-metallic material.
Embodiment 4
Protecting cover 5 is connected by chain hook with outer oxygen nozzle 3, and equidistantly arrange three earflaps outside protecting cover body 51, all the other are with embodiment 1.
Claims (8)
1. one kind is provided with the coal gasifying process nozzle of protecting cover, comprise the central oxygen shower nozzle (1) arranged with one heart successively from inside to outside, slurry spray head (2) and outer oxygen nozzle (3), the end face of outer oxygen nozzle (3) is arc-shaped, the external coiling water-cooled tube (4) of outer oxygen nozzle (3), it is characterized in that: described outer oxygen nozzle (3) port establishes a cover to buckle the protecting cover (5) of outer oxygen nozzle (3) port, described protecting cover (5) comprises protecting cover body (51) and is located at the earflap (52) in protecting cover body (51) outside, the spray orifice mouth (53) of outer oxygen nozzle (3) is established at protecting cover body (51) center, protecting cover body (51) periphery arranges 4-6 connecting hole (54), protecting cover (5) is connected with outer oxygen nozzle (3) by the metal screw mandrel (6) penetrating connecting hole (54), described metal screw mandrel (6) one end penetrates the connecting hole (54) of protecting cover body (51), the other end and outer oxygen nozzle (3) body are fixed.
2. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1, is characterized in that: described protecting cover (5) is high temperature material, preferred Al
2o
3, the metal oxide of Cr-90.
3. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1 and 2, is characterized in that: the metal screw mandrel (6) of described protecting cover (5) is for having flexibility or becoming the superalloy steel of chain, and one end is made hook-shaped or tail end and established pad.
4. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1, is characterized in that: described connecting hole (54) is slotted eye, and in metal screw mandrel (6) embedded groove, through slotted eye, metal screw mandrel (6) tail end is by outside draw-in groove hole.
5. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1, is characterized in that: described earflap (52) is projected on the periphery of protecting cover body (51), and in circular arc lid, earflap (52) and protecting cover body (51) make one.
6. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1 and 2, is characterized in that: spray orifice mouth (53) the same hole concentric on the spray orifice of outer oxygen nozzle (3) at described protecting cover body (51) center.
7. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1 or 4, is characterized in that: the preferred even number of hole count of described connecting hole (54), is equidistantly arranged.
8. a kind of coal gasifying process nozzle being provided with protecting cover according to claim 1, is characterized in that: metal screw mandrel (6) one end and the fixed form of outer oxygen nozzle (3) be weld, grafting or the one of splicing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610074856.2A CN105505473A (en) | 2016-02-03 | 2016-02-03 | Coal gasification process nozzle with protective cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610074856.2A CN105505473A (en) | 2016-02-03 | 2016-02-03 | Coal gasification process nozzle with protective cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105505473A true CN105505473A (en) | 2016-04-20 |
Family
ID=55713782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610074856.2A Pending CN105505473A (en) | 2016-02-03 | 2016-02-03 | Coal gasification process nozzle with protective cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105505473A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426519A (en) * | 2000-04-21 | 2003-06-25 | 伊斯曼化学公司 | Threaded heat shield for bumer nozzle face |
| CN102492479A (en) * | 2011-12-28 | 2012-06-13 | 上海锅炉厂有限公司 | Three-channel slurry fuel gasification burner |
| CN103333717A (en) * | 2013-06-13 | 2013-10-02 | 中石化宁波工程有限公司 | Process burner structure of gasification furnace |
| US20140138459A1 (en) * | 2012-11-21 | 2014-05-22 | General Electric Company | System and method for coupling coolant fluid conduit to feed injector tip |
| CN204097420U (en) * | 2014-10-22 | 2015-01-14 | 陕西鑫立喷嘴研制开发有限公司 | A kind of coal water slurry process nozzle adopting new type nozzle |
| CN204185437U (en) * | 2014-09-01 | 2015-03-04 | 大唐国际化工技术研究院有限公司 | A kind of protection mechanism being applicable to the process burner of air-flow bed coal-gasification stove |
| CN105008801A (en) * | 2013-03-14 | 2015-10-28 | 通用电气公司 | Feed injector tip cap |
| CN205528626U (en) * | 2016-02-03 | 2016-08-31 | 陕西鑫立喷嘴研制开发有限公司 | Coal gasification nozzle with protecting cover |
-
2016
- 2016-02-03 CN CN201610074856.2A patent/CN105505473A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1426519A (en) * | 2000-04-21 | 2003-06-25 | 伊斯曼化学公司 | Threaded heat shield for bumer nozzle face |
| CN102492479A (en) * | 2011-12-28 | 2012-06-13 | 上海锅炉厂有限公司 | Three-channel slurry fuel gasification burner |
| US20140138459A1 (en) * | 2012-11-21 | 2014-05-22 | General Electric Company | System and method for coupling coolant fluid conduit to feed injector tip |
| CN105008801A (en) * | 2013-03-14 | 2015-10-28 | 通用电气公司 | Feed injector tip cap |
| CN103333717A (en) * | 2013-06-13 | 2013-10-02 | 中石化宁波工程有限公司 | Process burner structure of gasification furnace |
| CN204185437U (en) * | 2014-09-01 | 2015-03-04 | 大唐国际化工技术研究院有限公司 | A kind of protection mechanism being applicable to the process burner of air-flow bed coal-gasification stove |
| CN204097420U (en) * | 2014-10-22 | 2015-01-14 | 陕西鑫立喷嘴研制开发有限公司 | A kind of coal water slurry process nozzle adopting new type nozzle |
| CN205528626U (en) * | 2016-02-03 | 2016-08-31 | 陕西鑫立喷嘴研制开发有限公司 | Coal gasification nozzle with protecting cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |
|
| RJ01 | Rejection of invention patent application after publication |